if_wpi.c revision 289008
1/*- 2 * Copyright (c) 2006,2007 3 * Damien Bergamini <damien.bergamini@free.fr> 4 * Benjamin Close <Benjamin.Close@clearchain.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19#include <sys/cdefs.h> 20__FBSDID("$FreeBSD: head/sys/dev/wpi/if_wpi.c 289008 2015-10-08 07:18:28Z adrian $"); 21 22/* 23 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 24 * 25 * The 3945ABG network adapter doesn't use traditional hardware as 26 * many other adaptors do. Instead at run time the eeprom is set into a known 27 * state and told to load boot firmware. The boot firmware loads an init and a 28 * main binary firmware image into SRAM on the card via DMA. 29 * Once the firmware is loaded, the driver/hw then 30 * communicate by way of circular dma rings via the SRAM to the firmware. 31 * 32 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 33 * The 4 tx data rings allow for prioritization QoS. 34 * 35 * The rx data ring consists of 32 dma buffers. Two registers are used to 36 * indicate where in the ring the driver and the firmware are up to. The 37 * driver sets the initial read index (reg1) and the initial write index (reg2), 38 * the firmware updates the read index (reg1) on rx of a packet and fires an 39 * interrupt. The driver then processes the buffers starting at reg1 indicating 40 * to the firmware which buffers have been accessed by updating reg2. At the 41 * same time allocating new memory for the processed buffer. 42 * 43 * A similar thing happens with the tx rings. The difference is the firmware 44 * stop processing buffers once the queue is full and until confirmation 45 * of a successful transmition (tx_done) has occurred. 46 * 47 * The command ring operates in the same manner as the tx queues. 48 * 49 * All communication direct to the card (ie eeprom) is classed as Stage1 50 * communication 51 * 52 * All communication via the firmware to the card is classed as State2. 53 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 54 * firmware. The bootstrap firmware and runtime firmware are loaded 55 * from host memory via dma to the card then told to execute. From this point 56 * on the majority of communications between the driver and the card goes 57 * via the firmware. 58 */ 59 60#include "opt_wlan.h" 61#include "opt_wpi.h" 62 63#include <sys/param.h> 64#include <sys/sysctl.h> 65#include <sys/sockio.h> 66#include <sys/mbuf.h> 67#include <sys/kernel.h> 68#include <sys/socket.h> 69#include <sys/systm.h> 70#include <sys/malloc.h> 71#include <sys/queue.h> 72#include <sys/taskqueue.h> 73#include <sys/module.h> 74#include <sys/bus.h> 75#include <sys/endian.h> 76#include <sys/linker.h> 77#include <sys/firmware.h> 78 79#include <machine/bus.h> 80#include <machine/resource.h> 81#include <sys/rman.h> 82 83#include <dev/pci/pcireg.h> 84#include <dev/pci/pcivar.h> 85 86#include <net/bpf.h> 87#include <net/if.h> 88#include <net/if_var.h> 89#include <net/if_arp.h> 90#include <net/ethernet.h> 91#include <net/if_dl.h> 92#include <net/if_media.h> 93#include <net/if_types.h> 94 95#include <netinet/in.h> 96#include <netinet/in_systm.h> 97#include <netinet/in_var.h> 98#include <netinet/if_ether.h> 99#include <netinet/ip.h> 100 101#include <net80211/ieee80211_var.h> 102#include <net80211/ieee80211_radiotap.h> 103#include <net80211/ieee80211_regdomain.h> 104#include <net80211/ieee80211_ratectl.h> 105 106#include <dev/wpi/if_wpireg.h> 107#include <dev/wpi/if_wpivar.h> 108#include <dev/wpi/if_wpi_debug.h> 109 110struct wpi_ident { 111 uint16_t vendor; 112 uint16_t device; 113 uint16_t subdevice; 114 const char *name; 115}; 116 117static const struct wpi_ident wpi_ident_table[] = { 118 /* The below entries support ABG regardless of the subid */ 119 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 120 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 121 /* The below entries only support BG */ 122 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 123 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 124 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 125 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 126 { 0, 0, 0, NULL } 127}; 128 129static int wpi_probe(device_t); 130static int wpi_attach(device_t); 131static void wpi_radiotap_attach(struct wpi_softc *); 132static void wpi_sysctlattach(struct wpi_softc *); 133static void wpi_init_beacon(struct wpi_vap *); 134static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 135 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 136 const uint8_t [IEEE80211_ADDR_LEN], 137 const uint8_t [IEEE80211_ADDR_LEN]); 138static void wpi_vap_delete(struct ieee80211vap *); 139static int wpi_detach(device_t); 140static int wpi_shutdown(device_t); 141static int wpi_suspend(device_t); 142static int wpi_resume(device_t); 143static int wpi_nic_lock(struct wpi_softc *); 144static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 145static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 146static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 147 void **, bus_size_t, bus_size_t); 148static void wpi_dma_contig_free(struct wpi_dma_info *); 149static int wpi_alloc_shared(struct wpi_softc *); 150static void wpi_free_shared(struct wpi_softc *); 151static int wpi_alloc_fwmem(struct wpi_softc *); 152static void wpi_free_fwmem(struct wpi_softc *); 153static int wpi_alloc_rx_ring(struct wpi_softc *); 154static void wpi_update_rx_ring(struct wpi_softc *); 155static void wpi_update_rx_ring_ps(struct wpi_softc *); 156static void wpi_reset_rx_ring(struct wpi_softc *); 157static void wpi_free_rx_ring(struct wpi_softc *); 158static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 159 int); 160static void wpi_update_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 161static void wpi_update_tx_ring_ps(struct wpi_softc *, 162 struct wpi_tx_ring *); 163static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 164static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 165static int wpi_read_eeprom(struct wpi_softc *, 166 uint8_t macaddr[IEEE80211_ADDR_LEN]); 167static uint32_t wpi_eeprom_channel_flags(struct wpi_eeprom_chan *); 168static void wpi_read_eeprom_band(struct wpi_softc *, int); 169static int wpi_read_eeprom_channels(struct wpi_softc *, int); 170static struct wpi_eeprom_chan *wpi_find_eeprom_channel(struct wpi_softc *, 171 struct ieee80211_channel *); 172static int wpi_setregdomain(struct ieee80211com *, 173 struct ieee80211_regdomain *, int, 174 struct ieee80211_channel[]); 175static int wpi_read_eeprom_group(struct wpi_softc *, int); 176static int wpi_add_node_entry_adhoc(struct wpi_softc *); 177static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 178 const uint8_t mac[IEEE80211_ADDR_LEN]); 179static void wpi_node_free(struct ieee80211_node *); 180static void wpi_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 181 const struct ieee80211_rx_stats *, 182 int, int); 183static void wpi_restore_node(void *, struct ieee80211_node *); 184static void wpi_restore_node_table(struct wpi_softc *, struct wpi_vap *); 185static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 186static void wpi_calib_timeout(void *); 187static void wpi_rx_done(struct wpi_softc *, struct wpi_rx_desc *, 188 struct wpi_rx_data *); 189static void wpi_rx_statistics(struct wpi_softc *, struct wpi_rx_desc *, 190 struct wpi_rx_data *); 191static void wpi_tx_done(struct wpi_softc *, struct wpi_rx_desc *); 192static void wpi_cmd_done(struct wpi_softc *, struct wpi_rx_desc *); 193static void wpi_notif_intr(struct wpi_softc *); 194static void wpi_wakeup_intr(struct wpi_softc *); 195#ifdef WPI_DEBUG 196static void wpi_debug_registers(struct wpi_softc *); 197#endif 198static void wpi_fatal_intr(struct wpi_softc *); 199static void wpi_intr(void *); 200static int wpi_cmd2(struct wpi_softc *, struct wpi_buf *); 201static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 202 struct ieee80211_node *); 203static int wpi_tx_data_raw(struct wpi_softc *, struct mbuf *, 204 struct ieee80211_node *, 205 const struct ieee80211_bpf_params *); 206static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 207 const struct ieee80211_bpf_params *); 208static int wpi_transmit(struct ieee80211com *, struct mbuf *); 209static void wpi_watchdog_rfkill(void *); 210static void wpi_scan_timeout(void *); 211static void wpi_tx_timeout(void *); 212static void wpi_parent(struct ieee80211com *); 213static int wpi_cmd(struct wpi_softc *, int, const void *, size_t, int); 214static int wpi_mrr_setup(struct wpi_softc *); 215static int wpi_add_node(struct wpi_softc *, struct ieee80211_node *); 216static int wpi_add_broadcast_node(struct wpi_softc *, int); 217static int wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *); 218static void wpi_del_node(struct wpi_softc *, struct ieee80211_node *); 219static int wpi_updateedca(struct ieee80211com *); 220static void wpi_set_promisc(struct wpi_softc *); 221static void wpi_update_promisc(struct ieee80211com *); 222static void wpi_update_mcast(struct ieee80211com *); 223static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 224static int wpi_set_timing(struct wpi_softc *, struct ieee80211_node *); 225static void wpi_power_calibration(struct wpi_softc *); 226static int wpi_set_txpower(struct wpi_softc *, int); 227static int wpi_get_power_index(struct wpi_softc *, 228 struct wpi_power_group *, uint8_t, int, int); 229static int wpi_set_pslevel(struct wpi_softc *, uint8_t, int, int); 230static int wpi_send_btcoex(struct wpi_softc *); 231static int wpi_send_rxon(struct wpi_softc *, int, int); 232static int wpi_config(struct wpi_softc *); 233static uint16_t wpi_get_active_dwell_time(struct wpi_softc *, 234 struct ieee80211_channel *, uint8_t); 235static uint16_t wpi_limit_dwell(struct wpi_softc *, uint16_t); 236static uint16_t wpi_get_passive_dwell_time(struct wpi_softc *, 237 struct ieee80211_channel *); 238static uint32_t wpi_get_scan_pause_time(uint32_t, uint16_t); 239static int wpi_scan(struct wpi_softc *, struct ieee80211_channel *); 240static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 241static int wpi_config_beacon(struct wpi_vap *); 242static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 243static void wpi_update_beacon(struct ieee80211vap *, int); 244static void wpi_newassoc(struct ieee80211_node *, int); 245static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 246static int wpi_load_key(struct ieee80211_node *, 247 const struct ieee80211_key *); 248static void wpi_load_key_cb(void *, struct ieee80211_node *); 249static int wpi_set_global_keys(struct ieee80211_node *); 250static int wpi_del_key(struct ieee80211_node *, 251 const struct ieee80211_key *); 252static void wpi_del_key_cb(void *, struct ieee80211_node *); 253static int wpi_process_key(struct ieee80211vap *, 254 const struct ieee80211_key *, int); 255static int wpi_key_set(struct ieee80211vap *, 256 const struct ieee80211_key *); 257static int wpi_key_delete(struct ieee80211vap *, 258 const struct ieee80211_key *); 259static int wpi_post_alive(struct wpi_softc *); 260static int wpi_load_bootcode(struct wpi_softc *, const uint8_t *, int); 261static int wpi_load_firmware(struct wpi_softc *); 262static int wpi_read_firmware(struct wpi_softc *); 263static void wpi_unload_firmware(struct wpi_softc *); 264static int wpi_clock_wait(struct wpi_softc *); 265static int wpi_apm_init(struct wpi_softc *); 266static void wpi_apm_stop_master(struct wpi_softc *); 267static void wpi_apm_stop(struct wpi_softc *); 268static void wpi_nic_config(struct wpi_softc *); 269static int wpi_hw_init(struct wpi_softc *); 270static void wpi_hw_stop(struct wpi_softc *); 271static void wpi_radio_on(void *, int); 272static void wpi_radio_off(void *, int); 273static int wpi_init(struct wpi_softc *); 274static void wpi_stop_locked(struct wpi_softc *); 275static void wpi_stop(struct wpi_softc *); 276static void wpi_scan_start(struct ieee80211com *); 277static void wpi_scan_end(struct ieee80211com *); 278static void wpi_set_channel(struct ieee80211com *); 279static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 280static void wpi_scan_mindwell(struct ieee80211_scan_state *); 281static void wpi_hw_reset(void *, int); 282 283static device_method_t wpi_methods[] = { 284 /* Device interface */ 285 DEVMETHOD(device_probe, wpi_probe), 286 DEVMETHOD(device_attach, wpi_attach), 287 DEVMETHOD(device_detach, wpi_detach), 288 DEVMETHOD(device_shutdown, wpi_shutdown), 289 DEVMETHOD(device_suspend, wpi_suspend), 290 DEVMETHOD(device_resume, wpi_resume), 291 292 DEVMETHOD_END 293}; 294 295static driver_t wpi_driver = { 296 "wpi", 297 wpi_methods, 298 sizeof (struct wpi_softc) 299}; 300static devclass_t wpi_devclass; 301 302DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 303 304MODULE_VERSION(wpi, 1); 305 306MODULE_DEPEND(wpi, pci, 1, 1, 1); 307MODULE_DEPEND(wpi, wlan, 1, 1, 1); 308MODULE_DEPEND(wpi, firmware, 1, 1, 1); 309 310static int 311wpi_probe(device_t dev) 312{ 313 const struct wpi_ident *ident; 314 315 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 316 if (pci_get_vendor(dev) == ident->vendor && 317 pci_get_device(dev) == ident->device) { 318 device_set_desc(dev, ident->name); 319 return (BUS_PROBE_DEFAULT); 320 } 321 } 322 return ENXIO; 323} 324 325static int 326wpi_attach(device_t dev) 327{ 328 struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev); 329 struct ieee80211com *ic; 330 int i, error, rid; 331#ifdef WPI_DEBUG 332 int supportsa = 1; 333 const struct wpi_ident *ident; 334#endif 335 336 sc->sc_dev = dev; 337 338#ifdef WPI_DEBUG 339 error = resource_int_value(device_get_name(sc->sc_dev), 340 device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug)); 341 if (error != 0) 342 sc->sc_debug = 0; 343#else 344 sc->sc_debug = 0; 345#endif 346 347 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 348 349 /* 350 * Get the offset of the PCI Express Capability Structure in PCI 351 * Configuration Space. 352 */ 353 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 354 if (error != 0) { 355 device_printf(dev, "PCIe capability structure not found!\n"); 356 return error; 357 } 358 359 /* 360 * Some card's only support 802.11b/g not a, check to see if 361 * this is one such card. A 0x0 in the subdevice table indicates 362 * the entire subdevice range is to be ignored. 363 */ 364#ifdef WPI_DEBUG 365 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 366 if (ident->subdevice && 367 pci_get_subdevice(dev) == ident->subdevice) { 368 supportsa = 0; 369 break; 370 } 371 } 372#endif 373 374 /* Clear device-specific "PCI retry timeout" register (41h). */ 375 pci_write_config(dev, 0x41, 0, 1); 376 377 /* Enable bus-mastering. */ 378 pci_enable_busmaster(dev); 379 380 rid = PCIR_BAR(0); 381 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 382 RF_ACTIVE); 383 if (sc->mem == NULL) { 384 device_printf(dev, "can't map mem space\n"); 385 return ENOMEM; 386 } 387 sc->sc_st = rman_get_bustag(sc->mem); 388 sc->sc_sh = rman_get_bushandle(sc->mem); 389 390 i = 1; 391 rid = 0; 392 if (pci_alloc_msi(dev, &i) == 0) 393 rid = 1; 394 /* Install interrupt handler. */ 395 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 396 (rid != 0 ? 0 : RF_SHAREABLE)); 397 if (sc->irq == NULL) { 398 device_printf(dev, "can't map interrupt\n"); 399 error = ENOMEM; 400 goto fail; 401 } 402 403 WPI_LOCK_INIT(sc); 404 WPI_TX_LOCK_INIT(sc); 405 WPI_RXON_LOCK_INIT(sc); 406 WPI_NT_LOCK_INIT(sc); 407 WPI_TXQ_LOCK_INIT(sc); 408 WPI_TXQ_STATE_LOCK_INIT(sc); 409 410 /* Allocate DMA memory for firmware transfers. */ 411 if ((error = wpi_alloc_fwmem(sc)) != 0) { 412 device_printf(dev, 413 "could not allocate memory for firmware, error %d\n", 414 error); 415 goto fail; 416 } 417 418 /* Allocate shared page. */ 419 if ((error = wpi_alloc_shared(sc)) != 0) { 420 device_printf(dev, "could not allocate shared page\n"); 421 goto fail; 422 } 423 424 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 425 for (i = 0; i < WPI_NTXQUEUES; i++) { 426 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 427 device_printf(dev, 428 "could not allocate TX ring %d, error %d\n", i, 429 error); 430 goto fail; 431 } 432 } 433 434 /* Allocate RX ring. */ 435 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 436 device_printf(dev, "could not allocate RX ring, error %d\n", 437 error); 438 goto fail; 439 } 440 441 /* Clear pending interrupts. */ 442 WPI_WRITE(sc, WPI_INT, 0xffffffff); 443 444 ic = &sc->sc_ic; 445 ic->ic_softc = sc; 446 ic->ic_name = device_get_nameunit(dev); 447 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 448 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 449 450 /* Set device capabilities. */ 451 ic->ic_caps = 452 IEEE80211_C_STA /* station mode supported */ 453 | IEEE80211_C_IBSS /* IBSS mode supported */ 454 | IEEE80211_C_HOSTAP /* Host access point mode */ 455 | IEEE80211_C_MONITOR /* monitor mode supported */ 456 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 457 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 458 | IEEE80211_C_TXPMGT /* tx power management */ 459 | IEEE80211_C_SHSLOT /* short slot time supported */ 460 | IEEE80211_C_WPA /* 802.11i */ 461 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 462 | IEEE80211_C_WME /* 802.11e */ 463 | IEEE80211_C_PMGT /* Station-side power mgmt */ 464 ; 465 466 ic->ic_cryptocaps = 467 IEEE80211_CRYPTO_AES_CCM; 468 469 /* 470 * Read in the eeprom and also setup the channels for 471 * net80211. We don't set the rates as net80211 does this for us 472 */ 473 if ((error = wpi_read_eeprom(sc, ic->ic_macaddr)) != 0) { 474 device_printf(dev, "could not read EEPROM, error %d\n", 475 error); 476 goto fail; 477 } 478 479#ifdef WPI_DEBUG 480 if (bootverbose) { 481 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", 482 sc->domain); 483 device_printf(sc->sc_dev, "Hardware Type: %c\n", 484 sc->type > 1 ? 'B': '?'); 485 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 486 ((sc->rev & 0xf0) == 0xd0) ? 'D': '?'); 487 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 488 supportsa ? "does" : "does not"); 489 490 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must 491 check what sc->rev really represents - benjsc 20070615 */ 492 } 493#endif 494 495 ieee80211_ifattach(ic); 496 ic->ic_vap_create = wpi_vap_create; 497 ic->ic_vap_delete = wpi_vap_delete; 498 ic->ic_parent = wpi_parent; 499 ic->ic_raw_xmit = wpi_raw_xmit; 500 ic->ic_transmit = wpi_transmit; 501 ic->ic_node_alloc = wpi_node_alloc; 502 sc->sc_node_free = ic->ic_node_free; 503 ic->ic_node_free = wpi_node_free; 504 ic->ic_wme.wme_update = wpi_updateedca; 505 ic->ic_update_promisc = wpi_update_promisc; 506 ic->ic_update_mcast = wpi_update_mcast; 507 ic->ic_newassoc = wpi_newassoc; 508 ic->ic_scan_start = wpi_scan_start; 509 ic->ic_scan_end = wpi_scan_end; 510 ic->ic_set_channel = wpi_set_channel; 511 ic->ic_scan_curchan = wpi_scan_curchan; 512 ic->ic_scan_mindwell = wpi_scan_mindwell; 513 ic->ic_setregdomain = wpi_setregdomain; 514 515 sc->sc_update_rx_ring = wpi_update_rx_ring; 516 sc->sc_update_tx_ring = wpi_update_tx_ring; 517 518 wpi_radiotap_attach(sc); 519 520 callout_init_mtx(&sc->calib_to, &sc->rxon_mtx, 0); 521 callout_init_mtx(&sc->scan_timeout, &sc->rxon_mtx, 0); 522 callout_init_mtx(&sc->tx_timeout, &sc->txq_state_mtx, 0); 523 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 524 TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc); 525 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 526 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 527 528 sc->sc_tq = taskqueue_create("wpi_taskq", M_WAITOK, 529 taskqueue_thread_enqueue, &sc->sc_tq); 530 error = taskqueue_start_threads(&sc->sc_tq, 1, 0, "wpi_taskq"); 531 if (error != 0) { 532 device_printf(dev, "can't start threads, error %d\n", error); 533 goto fail; 534 } 535 536 wpi_sysctlattach(sc); 537 538 /* 539 * Hook our interrupt after all initialization is complete. 540 */ 541 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 542 NULL, wpi_intr, sc, &sc->sc_ih); 543 if (error != 0) { 544 device_printf(dev, "can't establish interrupt, error %d\n", 545 error); 546 goto fail; 547 } 548 549 if (bootverbose) 550 ieee80211_announce(ic); 551 552#ifdef WPI_DEBUG 553 if (sc->sc_debug & WPI_DEBUG_HW) 554 ieee80211_announce_channels(ic); 555#endif 556 557 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 558 return 0; 559 560fail: wpi_detach(dev); 561 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 562 return error; 563} 564 565/* 566 * Attach the interface to 802.11 radiotap. 567 */ 568static void 569wpi_radiotap_attach(struct wpi_softc *sc) 570{ 571 struct wpi_rx_radiotap_header *rxtap = &sc->sc_rxtap; 572 struct wpi_tx_radiotap_header *txtap = &sc->sc_txtap; 573 574 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 575 ieee80211_radiotap_attach(&sc->sc_ic, 576 &txtap->wt_ihdr, sizeof(*txtap), WPI_TX_RADIOTAP_PRESENT, 577 &rxtap->wr_ihdr, sizeof(*rxtap), WPI_RX_RADIOTAP_PRESENT); 578 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 579} 580 581static void 582wpi_sysctlattach(struct wpi_softc *sc) 583{ 584#ifdef WPI_DEBUG 585 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 586 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 587 588 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 589 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 590 "control debugging printfs"); 591#endif 592} 593 594static void 595wpi_init_beacon(struct wpi_vap *wvp) 596{ 597 struct wpi_buf *bcn = &wvp->wv_bcbuf; 598 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 599 600 cmd->id = WPI_ID_BROADCAST; 601 cmd->ofdm_mask = 0xff; 602 cmd->cck_mask = 0x0f; 603 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 604 605 /* 606 * XXX WPI_TX_AUTO_SEQ seems to be ignored - workaround this issue 607 * XXX by using WPI_TX_NEED_ACK instead (with some side effects). 608 */ 609 cmd->flags = htole32(WPI_TX_NEED_ACK | WPI_TX_INSERT_TSTAMP); 610 611 bcn->code = WPI_CMD_SET_BEACON; 612 bcn->ac = WPI_CMD_QUEUE_NUM; 613 bcn->size = sizeof(struct wpi_cmd_beacon); 614} 615 616static struct ieee80211vap * 617wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 618 enum ieee80211_opmode opmode, int flags, 619 const uint8_t bssid[IEEE80211_ADDR_LEN], 620 const uint8_t mac[IEEE80211_ADDR_LEN]) 621{ 622 struct wpi_vap *wvp; 623 struct ieee80211vap *vap; 624 625 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 626 return NULL; 627 628 wvp = malloc(sizeof(struct wpi_vap), M_80211_VAP, M_WAITOK | M_ZERO); 629 vap = &wvp->wv_vap; 630 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 631 632 if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) { 633 WPI_VAP_LOCK_INIT(wvp); 634 wpi_init_beacon(wvp); 635 } 636 637 /* Override with driver methods. */ 638 vap->iv_key_set = wpi_key_set; 639 vap->iv_key_delete = wpi_key_delete; 640 wvp->wv_recv_mgmt = vap->iv_recv_mgmt; 641 vap->iv_recv_mgmt = wpi_recv_mgmt; 642 wvp->wv_newstate = vap->iv_newstate; 643 vap->iv_newstate = wpi_newstate; 644 vap->iv_update_beacon = wpi_update_beacon; 645 vap->iv_max_aid = WPI_ID_IBSS_MAX - WPI_ID_IBSS_MIN + 1; 646 647 ieee80211_ratectl_init(vap); 648 /* Complete setup. */ 649 ieee80211_vap_attach(vap, ieee80211_media_change, 650 ieee80211_media_status, mac); 651 ic->ic_opmode = opmode; 652 return vap; 653} 654 655static void 656wpi_vap_delete(struct ieee80211vap *vap) 657{ 658 struct wpi_vap *wvp = WPI_VAP(vap); 659 struct wpi_buf *bcn = &wvp->wv_bcbuf; 660 enum ieee80211_opmode opmode = vap->iv_opmode; 661 662 ieee80211_ratectl_deinit(vap); 663 ieee80211_vap_detach(vap); 664 665 if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) { 666 if (bcn->m != NULL) 667 m_freem(bcn->m); 668 669 WPI_VAP_LOCK_DESTROY(wvp); 670 } 671 672 free(wvp, M_80211_VAP); 673} 674 675static int 676wpi_detach(device_t dev) 677{ 678 struct wpi_softc *sc = device_get_softc(dev); 679 struct ieee80211com *ic = &sc->sc_ic; 680 int qid; 681 682 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 683 684 if (ic->ic_vap_create == wpi_vap_create) { 685 ieee80211_draintask(ic, &sc->sc_radioon_task); 686 687 wpi_stop(sc); 688 689 if (sc->sc_tq != NULL) { 690 taskqueue_drain_all(sc->sc_tq); 691 taskqueue_free(sc->sc_tq); 692 } 693 694 callout_drain(&sc->watchdog_rfkill); 695 callout_drain(&sc->tx_timeout); 696 callout_drain(&sc->scan_timeout); 697 callout_drain(&sc->calib_to); 698 ieee80211_ifdetach(ic); 699 } 700 701 /* Uninstall interrupt handler. */ 702 if (sc->irq != NULL) { 703 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 704 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 705 sc->irq); 706 pci_release_msi(dev); 707 } 708 709 if (sc->txq[0].data_dmat) { 710 /* Free DMA resources. */ 711 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 712 wpi_free_tx_ring(sc, &sc->txq[qid]); 713 714 wpi_free_rx_ring(sc); 715 wpi_free_shared(sc); 716 } 717 718 if (sc->fw_dma.tag) 719 wpi_free_fwmem(sc); 720 721 if (sc->mem != NULL) 722 bus_release_resource(dev, SYS_RES_MEMORY, 723 rman_get_rid(sc->mem), sc->mem); 724 725 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 726 WPI_TXQ_STATE_LOCK_DESTROY(sc); 727 WPI_TXQ_LOCK_DESTROY(sc); 728 WPI_NT_LOCK_DESTROY(sc); 729 WPI_RXON_LOCK_DESTROY(sc); 730 WPI_TX_LOCK_DESTROY(sc); 731 WPI_LOCK_DESTROY(sc); 732 return 0; 733} 734 735static int 736wpi_shutdown(device_t dev) 737{ 738 struct wpi_softc *sc = device_get_softc(dev); 739 740 wpi_stop(sc); 741 return 0; 742} 743 744static int 745wpi_suspend(device_t dev) 746{ 747 struct wpi_softc *sc = device_get_softc(dev); 748 struct ieee80211com *ic = &sc->sc_ic; 749 750 ieee80211_suspend_all(ic); 751 return 0; 752} 753 754static int 755wpi_resume(device_t dev) 756{ 757 struct wpi_softc *sc = device_get_softc(dev); 758 struct ieee80211com *ic = &sc->sc_ic; 759 760 /* Clear device-specific "PCI retry timeout" register (41h). */ 761 pci_write_config(dev, 0x41, 0, 1); 762 763 ieee80211_resume_all(ic); 764 return 0; 765} 766 767/* 768 * Grab exclusive access to NIC memory. 769 */ 770static int 771wpi_nic_lock(struct wpi_softc *sc) 772{ 773 int ntries; 774 775 /* Request exclusive access to NIC. */ 776 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 777 778 /* Spin until we actually get the lock. */ 779 for (ntries = 0; ntries < 1000; ntries++) { 780 if ((WPI_READ(sc, WPI_GP_CNTRL) & 781 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 782 WPI_GP_CNTRL_MAC_ACCESS_ENA) 783 return 0; 784 DELAY(10); 785 } 786 787 device_printf(sc->sc_dev, "could not lock memory\n"); 788 789 return ETIMEDOUT; 790} 791 792/* 793 * Release lock on NIC memory. 794 */ 795static __inline void 796wpi_nic_unlock(struct wpi_softc *sc) 797{ 798 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 799} 800 801static __inline uint32_t 802wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 803{ 804 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 805 WPI_BARRIER_READ_WRITE(sc); 806 return WPI_READ(sc, WPI_PRPH_RDATA); 807} 808 809static __inline void 810wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 811{ 812 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 813 WPI_BARRIER_WRITE(sc); 814 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 815} 816 817static __inline void 818wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 819{ 820 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 821} 822 823static __inline void 824wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 825{ 826 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 827} 828 829static __inline void 830wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 831 const uint32_t *data, int count) 832{ 833 for (; count > 0; count--, data++, addr += 4) 834 wpi_prph_write(sc, addr, *data); 835} 836 837static __inline uint32_t 838wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 839{ 840 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 841 WPI_BARRIER_READ_WRITE(sc); 842 return WPI_READ(sc, WPI_MEM_RDATA); 843} 844 845static __inline void 846wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 847 int count) 848{ 849 for (; count > 0; count--, addr += 4) 850 *data++ = wpi_mem_read(sc, addr); 851} 852 853static int 854wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 855{ 856 uint8_t *out = data; 857 uint32_t val; 858 int error, ntries; 859 860 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 861 862 if ((error = wpi_nic_lock(sc)) != 0) 863 return error; 864 865 for (; count > 0; count -= 2, addr++) { 866 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 867 for (ntries = 0; ntries < 10; ntries++) { 868 val = WPI_READ(sc, WPI_EEPROM); 869 if (val & WPI_EEPROM_READ_VALID) 870 break; 871 DELAY(5); 872 } 873 if (ntries == 10) { 874 device_printf(sc->sc_dev, 875 "timeout reading ROM at 0x%x\n", addr); 876 return ETIMEDOUT; 877 } 878 *out++= val >> 16; 879 if (count > 1) 880 *out ++= val >> 24; 881 } 882 883 wpi_nic_unlock(sc); 884 885 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 886 887 return 0; 888} 889 890static void 891wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 892{ 893 if (error != 0) 894 return; 895 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 896 *(bus_addr_t *)arg = segs[0].ds_addr; 897} 898 899/* 900 * Allocates a contiguous block of dma memory of the requested size and 901 * alignment. 902 */ 903static int 904wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 905 void **kvap, bus_size_t size, bus_size_t alignment) 906{ 907 int error; 908 909 dma->tag = NULL; 910 dma->size = size; 911 912 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 913 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 914 1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag); 915 if (error != 0) 916 goto fail; 917 918 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 919 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 920 if (error != 0) 921 goto fail; 922 923 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 924 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 925 if (error != 0) 926 goto fail; 927 928 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 929 930 if (kvap != NULL) 931 *kvap = dma->vaddr; 932 933 return 0; 934 935fail: wpi_dma_contig_free(dma); 936 return error; 937} 938 939static void 940wpi_dma_contig_free(struct wpi_dma_info *dma) 941{ 942 if (dma->vaddr != NULL) { 943 bus_dmamap_sync(dma->tag, dma->map, 944 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 945 bus_dmamap_unload(dma->tag, dma->map); 946 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 947 dma->vaddr = NULL; 948 } 949 if (dma->tag != NULL) { 950 bus_dma_tag_destroy(dma->tag); 951 dma->tag = NULL; 952 } 953} 954 955/* 956 * Allocate a shared page between host and NIC. 957 */ 958static int 959wpi_alloc_shared(struct wpi_softc *sc) 960{ 961 /* Shared buffer must be aligned on a 4KB boundary. */ 962 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 963 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 964} 965 966static void 967wpi_free_shared(struct wpi_softc *sc) 968{ 969 wpi_dma_contig_free(&sc->shared_dma); 970} 971 972/* 973 * Allocate DMA-safe memory for firmware transfer. 974 */ 975static int 976wpi_alloc_fwmem(struct wpi_softc *sc) 977{ 978 /* Must be aligned on a 16-byte boundary. */ 979 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 980 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 981} 982 983static void 984wpi_free_fwmem(struct wpi_softc *sc) 985{ 986 wpi_dma_contig_free(&sc->fw_dma); 987} 988 989static int 990wpi_alloc_rx_ring(struct wpi_softc *sc) 991{ 992 struct wpi_rx_ring *ring = &sc->rxq; 993 bus_size_t size; 994 int i, error; 995 996 ring->cur = 0; 997 ring->update = 0; 998 999 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1000 1001 /* Allocate RX descriptors (16KB aligned.) */ 1002 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 1003 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1004 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 1005 if (error != 0) { 1006 device_printf(sc->sc_dev, 1007 "%s: could not allocate RX ring DMA memory, error %d\n", 1008 __func__, error); 1009 goto fail; 1010 } 1011 1012 /* Create RX buffer DMA tag. */ 1013 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1014 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1015 MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, 1016 &ring->data_dmat); 1017 if (error != 0) { 1018 device_printf(sc->sc_dev, 1019 "%s: could not create RX buf DMA tag, error %d\n", 1020 __func__, error); 1021 goto fail; 1022 } 1023 1024 /* 1025 * Allocate and map RX buffers. 1026 */ 1027 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1028 struct wpi_rx_data *data = &ring->data[i]; 1029 bus_addr_t paddr; 1030 1031 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1032 if (error != 0) { 1033 device_printf(sc->sc_dev, 1034 "%s: could not create RX buf DMA map, error %d\n", 1035 __func__, error); 1036 goto fail; 1037 } 1038 1039 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1040 if (data->m == NULL) { 1041 device_printf(sc->sc_dev, 1042 "%s: could not allocate RX mbuf\n", __func__); 1043 error = ENOBUFS; 1044 goto fail; 1045 } 1046 1047 error = bus_dmamap_load(ring->data_dmat, data->map, 1048 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1049 &paddr, BUS_DMA_NOWAIT); 1050 if (error != 0 && error != EFBIG) { 1051 device_printf(sc->sc_dev, 1052 "%s: can't map mbuf (error %d)\n", __func__, 1053 error); 1054 goto fail; 1055 } 1056 1057 /* Set physical address of RX buffer. */ 1058 ring->desc[i] = htole32(paddr); 1059 } 1060 1061 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1062 BUS_DMASYNC_PREWRITE); 1063 1064 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1065 1066 return 0; 1067 1068fail: wpi_free_rx_ring(sc); 1069 1070 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1071 1072 return error; 1073} 1074 1075static void 1076wpi_update_rx_ring(struct wpi_softc *sc) 1077{ 1078 WPI_WRITE(sc, WPI_FH_RX_WPTR, sc->rxq.cur & ~7); 1079} 1080 1081static void 1082wpi_update_rx_ring_ps(struct wpi_softc *sc) 1083{ 1084 struct wpi_rx_ring *ring = &sc->rxq; 1085 1086 if (ring->update != 0) { 1087 /* Wait for INT_WAKEUP event. */ 1088 return; 1089 } 1090 1091 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1092 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_SLEEP) { 1093 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1094 __func__); 1095 ring->update = 1; 1096 } else { 1097 wpi_update_rx_ring(sc); 1098 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1099 } 1100} 1101 1102static void 1103wpi_reset_rx_ring(struct wpi_softc *sc) 1104{ 1105 struct wpi_rx_ring *ring = &sc->rxq; 1106 int ntries; 1107 1108 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1109 1110 if (wpi_nic_lock(sc) == 0) { 1111 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1112 for (ntries = 0; ntries < 1000; ntries++) { 1113 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1114 WPI_FH_RX_STATUS_IDLE) 1115 break; 1116 DELAY(10); 1117 } 1118 wpi_nic_unlock(sc); 1119 } 1120 1121 ring->cur = 0; 1122 ring->update = 0; 1123} 1124 1125static void 1126wpi_free_rx_ring(struct wpi_softc *sc) 1127{ 1128 struct wpi_rx_ring *ring = &sc->rxq; 1129 int i; 1130 1131 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1132 1133 wpi_dma_contig_free(&ring->desc_dma); 1134 1135 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1136 struct wpi_rx_data *data = &ring->data[i]; 1137 1138 if (data->m != NULL) { 1139 bus_dmamap_sync(ring->data_dmat, data->map, 1140 BUS_DMASYNC_POSTREAD); 1141 bus_dmamap_unload(ring->data_dmat, data->map); 1142 m_freem(data->m); 1143 data->m = NULL; 1144 } 1145 if (data->map != NULL) 1146 bus_dmamap_destroy(ring->data_dmat, data->map); 1147 } 1148 if (ring->data_dmat != NULL) { 1149 bus_dma_tag_destroy(ring->data_dmat); 1150 ring->data_dmat = NULL; 1151 } 1152} 1153 1154static int 1155wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid) 1156{ 1157 bus_addr_t paddr; 1158 bus_size_t size; 1159 int i, error; 1160 1161 ring->qid = qid; 1162 ring->queued = 0; 1163 ring->cur = 0; 1164 ring->update = 0; 1165 1166 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1167 1168 /* Allocate TX descriptors (16KB aligned.) */ 1169 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1170 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1171 size, WPI_RING_DMA_ALIGN); 1172 if (error != 0) { 1173 device_printf(sc->sc_dev, 1174 "%s: could not allocate TX ring DMA memory, error %d\n", 1175 __func__, error); 1176 goto fail; 1177 } 1178 1179 /* Update shared area with ring physical address. */ 1180 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1181 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1182 BUS_DMASYNC_PREWRITE); 1183 1184 /* 1185 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need 1186 * to allocate commands space for other rings. 1187 * XXX Do we really need to allocate descriptors for other rings? 1188 */ 1189 if (qid > WPI_CMD_QUEUE_NUM) { 1190 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1191 return 0; 1192 } 1193 1194 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1195 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1196 size, 4); 1197 if (error != 0) { 1198 device_printf(sc->sc_dev, 1199 "%s: could not allocate TX cmd DMA memory, error %d\n", 1200 __func__, error); 1201 goto fail; 1202 } 1203 1204 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1205 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1206 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1207 &ring->data_dmat); 1208 if (error != 0) { 1209 device_printf(sc->sc_dev, 1210 "%s: could not create TX buf DMA tag, error %d\n", 1211 __func__, error); 1212 goto fail; 1213 } 1214 1215 paddr = ring->cmd_dma.paddr; 1216 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1217 struct wpi_tx_data *data = &ring->data[i]; 1218 1219 data->cmd_paddr = paddr; 1220 paddr += sizeof (struct wpi_tx_cmd); 1221 1222 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1223 if (error != 0) { 1224 device_printf(sc->sc_dev, 1225 "%s: could not create TX buf DMA map, error %d\n", 1226 __func__, error); 1227 goto fail; 1228 } 1229 } 1230 1231 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1232 1233 return 0; 1234 1235fail: wpi_free_tx_ring(sc, ring); 1236 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1237 return error; 1238} 1239 1240static void 1241wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1242{ 1243 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1244} 1245 1246static void 1247wpi_update_tx_ring_ps(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1248{ 1249 1250 if (ring->update != 0) { 1251 /* Wait for INT_WAKEUP event. */ 1252 return; 1253 } 1254 1255 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1256 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_SLEEP) { 1257 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1258 __func__, ring->qid); 1259 ring->update = 1; 1260 } else { 1261 wpi_update_tx_ring(sc, ring); 1262 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1263 } 1264} 1265 1266static void 1267wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1268{ 1269 int i; 1270 1271 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1272 1273 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1274 struct wpi_tx_data *data = &ring->data[i]; 1275 1276 if (data->m != NULL) { 1277 bus_dmamap_sync(ring->data_dmat, data->map, 1278 BUS_DMASYNC_POSTWRITE); 1279 bus_dmamap_unload(ring->data_dmat, data->map); 1280 m_freem(data->m); 1281 data->m = NULL; 1282 } 1283 if (data->ni != NULL) { 1284 ieee80211_free_node(data->ni); 1285 data->ni = NULL; 1286 } 1287 } 1288 /* Clear TX descriptors. */ 1289 memset(ring->desc, 0, ring->desc_dma.size); 1290 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1291 BUS_DMASYNC_PREWRITE); 1292 ring->queued = 0; 1293 ring->cur = 0; 1294 ring->update = 0; 1295} 1296 1297static void 1298wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1299{ 1300 int i; 1301 1302 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1303 1304 wpi_dma_contig_free(&ring->desc_dma); 1305 wpi_dma_contig_free(&ring->cmd_dma); 1306 1307 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1308 struct wpi_tx_data *data = &ring->data[i]; 1309 1310 if (data->m != NULL) { 1311 bus_dmamap_sync(ring->data_dmat, data->map, 1312 BUS_DMASYNC_POSTWRITE); 1313 bus_dmamap_unload(ring->data_dmat, data->map); 1314 m_freem(data->m); 1315 } 1316 if (data->map != NULL) 1317 bus_dmamap_destroy(ring->data_dmat, data->map); 1318 } 1319 if (ring->data_dmat != NULL) { 1320 bus_dma_tag_destroy(ring->data_dmat); 1321 ring->data_dmat = NULL; 1322 } 1323} 1324 1325/* 1326 * Extract various information from EEPROM. 1327 */ 1328static int 1329wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 1330{ 1331#define WPI_CHK(res) do { \ 1332 if ((error = res) != 0) \ 1333 goto fail; \ 1334} while (0) 1335 int error, i; 1336 1337 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1338 1339 /* Adapter has to be powered on for EEPROM access to work. */ 1340 if ((error = wpi_apm_init(sc)) != 0) { 1341 device_printf(sc->sc_dev, 1342 "%s: could not power ON adapter, error %d\n", __func__, 1343 error); 1344 return error; 1345 } 1346 1347 if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) { 1348 device_printf(sc->sc_dev, "bad EEPROM signature\n"); 1349 error = EIO; 1350 goto fail; 1351 } 1352 /* Clear HW ownership of EEPROM. */ 1353 WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER); 1354 1355 /* Read the hardware capabilities, revision and SKU type. */ 1356 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap, 1357 sizeof(sc->cap))); 1358 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 1359 sizeof(sc->rev))); 1360 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1361 sizeof(sc->type))); 1362 1363 sc->rev = le16toh(sc->rev); 1364 DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, 1365 sc->rev, sc->type); 1366 1367 /* Read the regulatory domain (4 ASCII characters.) */ 1368 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 1369 sizeof(sc->domain))); 1370 1371 /* Read MAC address. */ 1372 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 1373 IEEE80211_ADDR_LEN)); 1374 1375 /* Read the list of authorized channels. */ 1376 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 1377 WPI_CHK(wpi_read_eeprom_channels(sc, i)); 1378 1379 /* Read the list of TX power groups. */ 1380 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 1381 WPI_CHK(wpi_read_eeprom_group(sc, i)); 1382 1383fail: wpi_apm_stop(sc); /* Power OFF adapter. */ 1384 1385 DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 1386 __func__); 1387 1388 return error; 1389#undef WPI_CHK 1390} 1391 1392/* 1393 * Translate EEPROM flags to net80211. 1394 */ 1395static uint32_t 1396wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel) 1397{ 1398 uint32_t nflags; 1399 1400 nflags = 0; 1401 if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0) 1402 nflags |= IEEE80211_CHAN_PASSIVE; 1403 if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0) 1404 nflags |= IEEE80211_CHAN_NOADHOC; 1405 if (channel->flags & WPI_EEPROM_CHAN_RADAR) { 1406 nflags |= IEEE80211_CHAN_DFS; 1407 /* XXX apparently IBSS may still be marked */ 1408 nflags |= IEEE80211_CHAN_NOADHOC; 1409 } 1410 1411 /* XXX HOSTAP uses WPI_MODE_IBSS */ 1412 if (nflags & IEEE80211_CHAN_NOADHOC) 1413 nflags |= IEEE80211_CHAN_NOHOSTAP; 1414 1415 return nflags; 1416} 1417 1418static void 1419wpi_read_eeprom_band(struct wpi_softc *sc, int n) 1420{ 1421 struct ieee80211com *ic = &sc->sc_ic; 1422 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1423 const struct wpi_chan_band *band = &wpi_bands[n]; 1424 struct ieee80211_channel *c; 1425 uint8_t chan; 1426 int i, nflags; 1427 1428 for (i = 0; i < band->nchan; i++) { 1429 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1430 DPRINTF(sc, WPI_DEBUG_EEPROM, 1431 "Channel Not Valid: %d, band %d\n", 1432 band->chan[i],n); 1433 continue; 1434 } 1435 1436 chan = band->chan[i]; 1437 nflags = wpi_eeprom_channel_flags(&channels[i]); 1438 1439 c = &ic->ic_channels[ic->ic_nchans++]; 1440 c->ic_ieee = chan; 1441 c->ic_maxregpower = channels[i].maxpwr; 1442 c->ic_maxpower = 2*c->ic_maxregpower; 1443 1444 if (n == 0) { /* 2GHz band */ 1445 c->ic_freq = ieee80211_ieee2mhz(chan, 1446 IEEE80211_CHAN_G); 1447 1448 /* G =>'s B is supported */ 1449 c->ic_flags = IEEE80211_CHAN_B | nflags; 1450 c = &ic->ic_channels[ic->ic_nchans++]; 1451 c[0] = c[-1]; 1452 c->ic_flags = IEEE80211_CHAN_G | nflags; 1453 } else { /* 5GHz band */ 1454 c->ic_freq = ieee80211_ieee2mhz(chan, 1455 IEEE80211_CHAN_A); 1456 1457 c->ic_flags = IEEE80211_CHAN_A | nflags; 1458 } 1459 1460 /* Save maximum allowed TX power for this channel. */ 1461 sc->maxpwr[chan] = channels[i].maxpwr; 1462 1463 DPRINTF(sc, WPI_DEBUG_EEPROM, 1464 "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d," 1465 " offset %d\n", chan, c->ic_freq, 1466 channels[i].flags, sc->maxpwr[chan], 1467 IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans); 1468 } 1469} 1470 1471/** 1472 * Read the eeprom to find out what channels are valid for the given 1473 * band and update net80211 with what we find. 1474 */ 1475static int 1476wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 1477{ 1478 struct ieee80211com *ic = &sc->sc_ic; 1479 const struct wpi_chan_band *band = &wpi_bands[n]; 1480 int error; 1481 1482 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1483 1484 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1485 band->nchan * sizeof (struct wpi_eeprom_chan)); 1486 if (error != 0) { 1487 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1488 return error; 1489 } 1490 1491 wpi_read_eeprom_band(sc, n); 1492 1493 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1494 1495 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1496 1497 return 0; 1498} 1499 1500static struct wpi_eeprom_chan * 1501wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1502{ 1503 int i, j; 1504 1505 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1506 for (i = 0; i < wpi_bands[j].nchan; i++) 1507 if (wpi_bands[j].chan[i] == c->ic_ieee) 1508 return &sc->eeprom_channels[j][i]; 1509 1510 return NULL; 1511} 1512 1513/* 1514 * Enforce flags read from EEPROM. 1515 */ 1516static int 1517wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1518 int nchan, struct ieee80211_channel chans[]) 1519{ 1520 struct wpi_softc *sc = ic->ic_softc; 1521 int i; 1522 1523 for (i = 0; i < nchan; i++) { 1524 struct ieee80211_channel *c = &chans[i]; 1525 struct wpi_eeprom_chan *channel; 1526 1527 channel = wpi_find_eeprom_channel(sc, c); 1528 if (channel == NULL) { 1529 ic_printf(ic, "%s: invalid channel %u freq %u/0x%x\n", 1530 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1531 return EINVAL; 1532 } 1533 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1534 } 1535 1536 return 0; 1537} 1538 1539static int 1540wpi_read_eeprom_group(struct wpi_softc *sc, int n) 1541{ 1542 struct wpi_power_group *group = &sc->groups[n]; 1543 struct wpi_eeprom_group rgroup; 1544 int i, error; 1545 1546 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1547 1548 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1549 &rgroup, sizeof rgroup)) != 0) { 1550 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1551 return error; 1552 } 1553 1554 /* Save TX power group information. */ 1555 group->chan = rgroup.chan; 1556 group->maxpwr = rgroup.maxpwr; 1557 /* Retrieve temperature at which the samples were taken. */ 1558 group->temp = (int16_t)le16toh(rgroup.temp); 1559 1560 DPRINTF(sc, WPI_DEBUG_EEPROM, 1561 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1562 group->maxpwr, group->temp); 1563 1564 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1565 group->samples[i].index = rgroup.samples[i].index; 1566 group->samples[i].power = rgroup.samples[i].power; 1567 1568 DPRINTF(sc, WPI_DEBUG_EEPROM, 1569 "\tsample %d: index=%d power=%d\n", i, 1570 group->samples[i].index, group->samples[i].power); 1571 } 1572 1573 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1574 1575 return 0; 1576} 1577 1578static int 1579wpi_add_node_entry_adhoc(struct wpi_softc *sc) 1580{ 1581 int newid = WPI_ID_IBSS_MIN; 1582 1583 for (; newid <= WPI_ID_IBSS_MAX; newid++) { 1584 if ((sc->nodesmsk & (1 << newid)) == 0) { 1585 sc->nodesmsk |= 1 << newid; 1586 return newid; 1587 } 1588 } 1589 1590 return WPI_ID_UNDEFINED; 1591} 1592 1593static __inline int 1594wpi_add_node_entry_sta(struct wpi_softc *sc) 1595{ 1596 sc->nodesmsk |= 1 << WPI_ID_BSS; 1597 1598 return WPI_ID_BSS; 1599} 1600 1601static __inline int 1602wpi_check_node_entry(struct wpi_softc *sc, uint8_t id) 1603{ 1604 if (id == WPI_ID_UNDEFINED) 1605 return 0; 1606 1607 return (sc->nodesmsk >> id) & 1; 1608} 1609 1610static __inline void 1611wpi_clear_node_table(struct wpi_softc *sc) 1612{ 1613 sc->nodesmsk = 0; 1614} 1615 1616static __inline void 1617wpi_del_node_entry(struct wpi_softc *sc, uint8_t id) 1618{ 1619 sc->nodesmsk &= ~(1 << id); 1620} 1621 1622static struct ieee80211_node * 1623wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1624{ 1625 struct wpi_node *wn; 1626 1627 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1628 M_NOWAIT | M_ZERO); 1629 1630 if (wn == NULL) 1631 return NULL; 1632 1633 wn->id = WPI_ID_UNDEFINED; 1634 1635 return &wn->ni; 1636} 1637 1638static void 1639wpi_node_free(struct ieee80211_node *ni) 1640{ 1641 struct wpi_softc *sc = ni->ni_ic->ic_softc; 1642 struct wpi_node *wn = WPI_NODE(ni); 1643 1644 if (wn->id != WPI_ID_UNDEFINED) { 1645 WPI_NT_LOCK(sc); 1646 if (wpi_check_node_entry(sc, wn->id)) { 1647 wpi_del_node_entry(sc, wn->id); 1648 wpi_del_node(sc, ni); 1649 } 1650 WPI_NT_UNLOCK(sc); 1651 } 1652 1653 sc->sc_node_free(ni); 1654} 1655 1656static __inline int 1657wpi_check_bss_filter(struct wpi_softc *sc) 1658{ 1659 return (sc->rxon.filter & htole32(WPI_FILTER_BSS)) != 0; 1660} 1661 1662static void 1663wpi_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m, int subtype, 1664 const struct ieee80211_rx_stats *rxs, 1665 int rssi, int nf) 1666{ 1667 struct ieee80211vap *vap = ni->ni_vap; 1668 struct wpi_softc *sc = vap->iv_ic->ic_softc; 1669 struct wpi_vap *wvp = WPI_VAP(vap); 1670 uint64_t ni_tstamp, rx_tstamp; 1671 1672 wvp->wv_recv_mgmt(ni, m, subtype, rxs, rssi, nf); 1673 1674 if (vap->iv_opmode == IEEE80211_M_IBSS && 1675 vap->iv_state == IEEE80211_S_RUN && 1676 (subtype == IEEE80211_FC0_SUBTYPE_BEACON || 1677 subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)) { 1678 ni_tstamp = le64toh(ni->ni_tstamp.tsf); 1679 rx_tstamp = le64toh(sc->rx_tstamp); 1680 1681 if (ni_tstamp >= rx_tstamp) { 1682 DPRINTF(sc, WPI_DEBUG_STATE, 1683 "ibss merge, tsf %ju tstamp %ju\n", 1684 (uintmax_t)rx_tstamp, (uintmax_t)ni_tstamp); 1685 (void) ieee80211_ibss_merge(ni); 1686 } 1687 } 1688} 1689 1690static void 1691wpi_restore_node(void *arg, struct ieee80211_node *ni) 1692{ 1693 struct wpi_softc *sc = arg; 1694 struct wpi_node *wn = WPI_NODE(ni); 1695 int error; 1696 1697 WPI_NT_LOCK(sc); 1698 if (wn->id != WPI_ID_UNDEFINED) { 1699 wn->id = WPI_ID_UNDEFINED; 1700 if ((error = wpi_add_ibss_node(sc, ni)) != 0) { 1701 device_printf(sc->sc_dev, 1702 "%s: could not add IBSS node, error %d\n", 1703 __func__, error); 1704 } 1705 } 1706 WPI_NT_UNLOCK(sc); 1707} 1708 1709static void 1710wpi_restore_node_table(struct wpi_softc *sc, struct wpi_vap *wvp) 1711{ 1712 struct ieee80211com *ic = &sc->sc_ic; 1713 1714 /* Set group keys once. */ 1715 WPI_NT_LOCK(sc); 1716 wvp->wv_gtk = 0; 1717 WPI_NT_UNLOCK(sc); 1718 1719 ieee80211_iterate_nodes(&ic->ic_sta, wpi_restore_node, sc); 1720 ieee80211_crypto_reload_keys(ic); 1721} 1722 1723/** 1724 * Called by net80211 when ever there is a change to 80211 state machine 1725 */ 1726static int 1727wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1728{ 1729 struct wpi_vap *wvp = WPI_VAP(vap); 1730 struct ieee80211com *ic = vap->iv_ic; 1731 struct wpi_softc *sc = ic->ic_softc; 1732 int error = 0; 1733 1734 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1735 1736 WPI_TXQ_LOCK(sc); 1737 if (nstate > IEEE80211_S_INIT && sc->sc_running == 0) { 1738 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1739 WPI_TXQ_UNLOCK(sc); 1740 1741 return ENXIO; 1742 } 1743 WPI_TXQ_UNLOCK(sc); 1744 1745 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1746 ieee80211_state_name[vap->iv_state], 1747 ieee80211_state_name[nstate]); 1748 1749 if (vap->iv_state == IEEE80211_S_RUN && nstate < IEEE80211_S_RUN) { 1750 if ((error = wpi_set_pslevel(sc, 0, 0, 1)) != 0) { 1751 device_printf(sc->sc_dev, 1752 "%s: could not set power saving level\n", 1753 __func__); 1754 return error; 1755 } 1756 1757 wpi_set_led(sc, WPI_LED_LINK, 1, 0); 1758 } 1759 1760 switch (nstate) { 1761 case IEEE80211_S_SCAN: 1762 WPI_RXON_LOCK(sc); 1763 if (wpi_check_bss_filter(sc) != 0) { 1764 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1765 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1766 device_printf(sc->sc_dev, 1767 "%s: could not send RXON\n", __func__); 1768 } 1769 } 1770 WPI_RXON_UNLOCK(sc); 1771 break; 1772 1773 case IEEE80211_S_ASSOC: 1774 if (vap->iv_state != IEEE80211_S_RUN) 1775 break; 1776 /* FALLTHROUGH */ 1777 case IEEE80211_S_AUTH: 1778 /* 1779 * NB: do not optimize AUTH -> AUTH state transmission - 1780 * this will break powersave with non-QoS AP! 1781 */ 1782 1783 /* 1784 * The node must be registered in the firmware before auth. 1785 * Also the associd must be cleared on RUN -> ASSOC 1786 * transitions. 1787 */ 1788 if ((error = wpi_auth(sc, vap)) != 0) { 1789 device_printf(sc->sc_dev, 1790 "%s: could not move to AUTH state, error %d\n", 1791 __func__, error); 1792 } 1793 break; 1794 1795 case IEEE80211_S_RUN: 1796 /* 1797 * RUN -> RUN transition: 1798 * STA mode: Just restart the timers. 1799 * IBSS mode: Process IBSS merge. 1800 */ 1801 if (vap->iv_state == IEEE80211_S_RUN) { 1802 if (vap->iv_opmode != IEEE80211_M_IBSS) { 1803 WPI_RXON_LOCK(sc); 1804 wpi_calib_timeout(sc); 1805 WPI_RXON_UNLOCK(sc); 1806 break; 1807 } else { 1808 /* 1809 * Drop the BSS_FILTER bit 1810 * (there is no another way to change bssid). 1811 */ 1812 WPI_RXON_LOCK(sc); 1813 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1814 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1815 device_printf(sc->sc_dev, 1816 "%s: could not send RXON\n", 1817 __func__); 1818 } 1819 WPI_RXON_UNLOCK(sc); 1820 1821 /* Restore all what was lost. */ 1822 wpi_restore_node_table(sc, wvp); 1823 1824 /* XXX set conditionally? */ 1825 wpi_updateedca(ic); 1826 } 1827 } 1828 1829 /* 1830 * !RUN -> RUN requires setting the association id 1831 * which is done with a firmware cmd. We also defer 1832 * starting the timers until that work is done. 1833 */ 1834 if ((error = wpi_run(sc, vap)) != 0) { 1835 device_printf(sc->sc_dev, 1836 "%s: could not move to RUN state\n", __func__); 1837 } 1838 break; 1839 1840 default: 1841 break; 1842 } 1843 if (error != 0) { 1844 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1845 return error; 1846 } 1847 1848 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1849 1850 return wvp->wv_newstate(vap, nstate, arg); 1851} 1852 1853static void 1854wpi_calib_timeout(void *arg) 1855{ 1856 struct wpi_softc *sc = arg; 1857 1858 if (wpi_check_bss_filter(sc) == 0) 1859 return; 1860 1861 wpi_power_calibration(sc); 1862 1863 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1864} 1865 1866static __inline uint8_t 1867rate2plcp(const uint8_t rate) 1868{ 1869 switch (rate) { 1870 case 12: return 0xd; 1871 case 18: return 0xf; 1872 case 24: return 0x5; 1873 case 36: return 0x7; 1874 case 48: return 0x9; 1875 case 72: return 0xb; 1876 case 96: return 0x1; 1877 case 108: return 0x3; 1878 case 2: return 10; 1879 case 4: return 20; 1880 case 11: return 55; 1881 case 22: return 110; 1882 default: return 0; 1883 } 1884} 1885 1886static __inline uint8_t 1887plcp2rate(const uint8_t plcp) 1888{ 1889 switch (plcp) { 1890 case 0xd: return 12; 1891 case 0xf: return 18; 1892 case 0x5: return 24; 1893 case 0x7: return 36; 1894 case 0x9: return 48; 1895 case 0xb: return 72; 1896 case 0x1: return 96; 1897 case 0x3: return 108; 1898 case 10: return 2; 1899 case 20: return 4; 1900 case 55: return 11; 1901 case 110: return 22; 1902 default: return 0; 1903 } 1904} 1905 1906/* Quickly determine if a given rate is CCK or OFDM. */ 1907#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1908 1909static void 1910wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1911 struct wpi_rx_data *data) 1912{ 1913 struct ieee80211com *ic = &sc->sc_ic; 1914 struct wpi_rx_ring *ring = &sc->rxq; 1915 struct wpi_rx_stat *stat; 1916 struct wpi_rx_head *head; 1917 struct wpi_rx_tail *tail; 1918 struct ieee80211_frame *wh; 1919 struct ieee80211_node *ni; 1920 struct mbuf *m, *m1; 1921 bus_addr_t paddr; 1922 uint32_t flags; 1923 uint16_t len; 1924 int error; 1925 1926 stat = (struct wpi_rx_stat *)(desc + 1); 1927 1928 if (__predict_false(stat->len > WPI_STAT_MAXLEN)) { 1929 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1930 goto fail1; 1931 } 1932 1933 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1934 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1935 len = le16toh(head->len); 1936 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1937 flags = le32toh(tail->flags); 1938 1939 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1940 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1941 le32toh(desc->len), len, (int8_t)stat->rssi, 1942 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1943 1944 /* Discard frames with a bad FCS early. */ 1945 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1946 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1947 __func__, flags); 1948 goto fail1; 1949 } 1950 /* Discard frames that are too short. */ 1951 if (len < sizeof (struct ieee80211_frame_ack)) { 1952 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1953 __func__, len); 1954 goto fail1; 1955 } 1956 1957 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1958 if (__predict_false(m1 == NULL)) { 1959 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1960 __func__); 1961 goto fail1; 1962 } 1963 bus_dmamap_unload(ring->data_dmat, data->map); 1964 1965 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1966 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1967 if (__predict_false(error != 0 && error != EFBIG)) { 1968 device_printf(sc->sc_dev, 1969 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1970 m_freem(m1); 1971 1972 /* Try to reload the old mbuf. */ 1973 error = bus_dmamap_load(ring->data_dmat, data->map, 1974 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1975 &paddr, BUS_DMA_NOWAIT); 1976 if (error != 0 && error != EFBIG) { 1977 panic("%s: could not load old RX mbuf", __func__); 1978 } 1979 /* Physical address may have changed. */ 1980 ring->desc[ring->cur] = htole32(paddr); 1981 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1982 BUS_DMASYNC_PREWRITE); 1983 goto fail1; 1984 } 1985 1986 m = data->m; 1987 data->m = m1; 1988 /* Update RX descriptor. */ 1989 ring->desc[ring->cur] = htole32(paddr); 1990 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1991 BUS_DMASYNC_PREWRITE); 1992 1993 /* Finalize mbuf. */ 1994 m->m_data = (caddr_t)(head + 1); 1995 m->m_pkthdr.len = m->m_len = len; 1996 1997 /* Grab a reference to the source node. */ 1998 wh = mtod(m, struct ieee80211_frame *); 1999 2000 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 2001 (flags & WPI_RX_CIPHER_MASK) == WPI_RX_CIPHER_CCMP) { 2002 /* Check whether decryption was successful or not. */ 2003 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 2004 DPRINTF(sc, WPI_DEBUG_RECV, 2005 "CCMP decryption failed 0x%x\n", flags); 2006 goto fail2; 2007 } 2008 m->m_flags |= M_WEP; 2009 } 2010 2011 if (len >= sizeof(struct ieee80211_frame_min)) 2012 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 2013 else 2014 ni = NULL; 2015 2016 sc->rx_tstamp = tail->tstamp; 2017 2018 if (ieee80211_radiotap_active(ic)) { 2019 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 2020 2021 tap->wr_flags = 0; 2022 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 2023 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 2024 tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET); 2025 tap->wr_dbm_antnoise = WPI_RSSI_OFFSET; 2026 tap->wr_tsft = tail->tstamp; 2027 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 2028 tap->wr_rate = plcp2rate(head->plcp); 2029 } 2030 2031 WPI_UNLOCK(sc); 2032 2033 /* Send the frame to the 802.11 layer. */ 2034 if (ni != NULL) { 2035 (void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET); 2036 /* Node is no longer needed. */ 2037 ieee80211_free_node(ni); 2038 } else 2039 (void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET); 2040 2041 WPI_LOCK(sc); 2042 2043 return; 2044 2045fail2: m_freem(m); 2046 2047fail1: counter_u64_add(ic->ic_ierrors, 1); 2048} 2049 2050static void 2051wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 2052 struct wpi_rx_data *data) 2053{ 2054 /* Ignore */ 2055} 2056 2057static void 2058wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 2059{ 2060 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 2061 struct wpi_tx_data *data = &ring->data[desc->idx]; 2062 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 2063 struct mbuf *m; 2064 struct ieee80211_node *ni; 2065 struct ieee80211vap *vap; 2066 struct ieee80211com *ic; 2067 uint32_t status = le32toh(stat->status); 2068 int ackfailcnt = stat->ackfailcnt / WPI_NTRIES_DEFAULT; 2069 2070 KASSERT(data->ni != NULL, ("no node")); 2071 KASSERT(data->m != NULL, ("no mbuf")); 2072 2073 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2074 2075 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 2076 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 2077 "status %x\n", __func__, desc->qid, desc->idx, stat->ackfailcnt, 2078 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 2079 2080 /* Unmap and free mbuf. */ 2081 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 2082 bus_dmamap_unload(ring->data_dmat, data->map); 2083 m = data->m, data->m = NULL; 2084 ni = data->ni, data->ni = NULL; 2085 vap = ni->ni_vap; 2086 ic = vap->iv_ic; 2087 2088 /* 2089 * Update rate control statistics for the node. 2090 */ 2091 if (status & WPI_TX_STATUS_FAIL) { 2092 ieee80211_ratectl_tx_complete(vap, ni, 2093 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 2094 } else 2095 ieee80211_ratectl_tx_complete(vap, ni, 2096 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 2097 2098 ieee80211_tx_complete(ni, m, (status & WPI_TX_STATUS_FAIL) != 0); 2099 2100 WPI_TXQ_STATE_LOCK(sc); 2101 if (--ring->queued > 0) 2102 callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc); 2103 else 2104 callout_stop(&sc->tx_timeout); 2105 WPI_TXQ_STATE_UNLOCK(sc); 2106 2107 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2108} 2109 2110/* 2111 * Process a "command done" firmware notification. This is where we wakeup 2112 * processes waiting for a synchronous command completion. 2113 */ 2114static void 2115wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 2116{ 2117 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 2118 struct wpi_tx_data *data; 2119 struct wpi_tx_cmd *cmd; 2120 2121 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid %x idx %d flags %x " 2122 "type %s len %d\n", desc->qid, desc->idx, 2123 desc->flags, wpi_cmd_str(desc->type), 2124 le32toh(desc->len)); 2125 2126 if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM) 2127 return; /* Not a command ack. */ 2128 2129 KASSERT(ring->queued == 0, ("ring->queued must be 0")); 2130 2131 data = &ring->data[desc->idx]; 2132 cmd = &ring->cmd[desc->idx]; 2133 2134 /* If the command was mapped in an mbuf, free it. */ 2135 if (data->m != NULL) { 2136 bus_dmamap_sync(ring->data_dmat, data->map, 2137 BUS_DMASYNC_POSTWRITE); 2138 bus_dmamap_unload(ring->data_dmat, data->map); 2139 m_freem(data->m); 2140 data->m = NULL; 2141 } 2142 2143 wakeup(cmd); 2144 2145 if (desc->type == WPI_CMD_SET_POWER_MODE) { 2146 struct wpi_pmgt_cmd *pcmd = (struct wpi_pmgt_cmd *)cmd->data; 2147 2148 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2149 BUS_DMASYNC_POSTREAD); 2150 2151 WPI_TXQ_LOCK(sc); 2152 if (le16toh(pcmd->flags) & WPI_PS_ALLOW_SLEEP) { 2153 sc->sc_update_rx_ring = wpi_update_rx_ring_ps; 2154 sc->sc_update_tx_ring = wpi_update_tx_ring_ps; 2155 } else { 2156 sc->sc_update_rx_ring = wpi_update_rx_ring; 2157 sc->sc_update_tx_ring = wpi_update_tx_ring; 2158 } 2159 WPI_TXQ_UNLOCK(sc); 2160 } 2161} 2162 2163static void 2164wpi_notif_intr(struct wpi_softc *sc) 2165{ 2166 struct ieee80211com *ic = &sc->sc_ic; 2167 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2168 uint32_t hw; 2169 2170 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 2171 BUS_DMASYNC_POSTREAD); 2172 2173 hw = le32toh(sc->shared->next) & 0xfff; 2174 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 2175 2176 while (sc->rxq.cur != hw) { 2177 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 2178 2179 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 2180 struct wpi_rx_desc *desc; 2181 2182 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2183 BUS_DMASYNC_POSTREAD); 2184 desc = mtod(data->m, struct wpi_rx_desc *); 2185 2186 DPRINTF(sc, WPI_DEBUG_NOTIFY, 2187 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 2188 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 2189 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 2190 2191 if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) { 2192 /* Reply to a command. */ 2193 wpi_cmd_done(sc, desc); 2194 } 2195 2196 switch (desc->type) { 2197 case WPI_RX_DONE: 2198 /* An 802.11 frame has been received. */ 2199 wpi_rx_done(sc, desc, data); 2200 2201 if (__predict_false(sc->sc_running == 0)) { 2202 /* wpi_stop() was called. */ 2203 return; 2204 } 2205 2206 break; 2207 2208 case WPI_TX_DONE: 2209 /* An 802.11 frame has been transmitted. */ 2210 wpi_tx_done(sc, desc); 2211 break; 2212 2213 case WPI_RX_STATISTICS: 2214 case WPI_BEACON_STATISTICS: 2215 wpi_rx_statistics(sc, desc, data); 2216 break; 2217 2218 case WPI_BEACON_MISSED: 2219 { 2220 struct wpi_beacon_missed *miss = 2221 (struct wpi_beacon_missed *)(desc + 1); 2222 uint32_t expected, misses, received, threshold; 2223 2224 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2225 BUS_DMASYNC_POSTREAD); 2226 2227 misses = le32toh(miss->consecutive); 2228 expected = le32toh(miss->expected); 2229 received = le32toh(miss->received); 2230 threshold = MAX(2, vap->iv_bmissthreshold); 2231 2232 DPRINTF(sc, WPI_DEBUG_BMISS, 2233 "%s: beacons missed %u(%u) (received %u/%u)\n", 2234 __func__, misses, le32toh(miss->total), received, 2235 expected); 2236 2237 if (misses >= threshold || 2238 (received == 0 && expected >= threshold)) { 2239 WPI_RXON_LOCK(sc); 2240 if (callout_pending(&sc->scan_timeout)) { 2241 wpi_cmd(sc, WPI_CMD_SCAN_ABORT, NULL, 2242 0, 1); 2243 } 2244 WPI_RXON_UNLOCK(sc); 2245 if (vap->iv_state == IEEE80211_S_RUN && 2246 (ic->ic_flags & IEEE80211_F_SCAN) == 0) 2247 ieee80211_beacon_miss(ic); 2248 } 2249 2250 break; 2251 } 2252#ifdef WPI_DEBUG 2253 case WPI_BEACON_SENT: 2254 { 2255 struct wpi_tx_stat *stat = 2256 (struct wpi_tx_stat *)(desc + 1); 2257 uint64_t *tsf = (uint64_t *)(stat + 1); 2258 uint32_t *mode = (uint32_t *)(tsf + 1); 2259 2260 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2261 BUS_DMASYNC_POSTREAD); 2262 2263 DPRINTF(sc, WPI_DEBUG_BEACON, 2264 "beacon sent: rts %u, ack %u, btkill %u, rate %u, " 2265 "duration %u, status %x, tsf %ju, mode %x\n", 2266 stat->rtsfailcnt, stat->ackfailcnt, 2267 stat->btkillcnt, stat->rate, le32toh(stat->duration), 2268 le32toh(stat->status), *tsf, *mode); 2269 2270 break; 2271 } 2272#endif 2273 case WPI_UC_READY: 2274 { 2275 struct wpi_ucode_info *uc = 2276 (struct wpi_ucode_info *)(desc + 1); 2277 2278 /* The microcontroller is ready. */ 2279 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2280 BUS_DMASYNC_POSTREAD); 2281 DPRINTF(sc, WPI_DEBUG_RESET, 2282 "microcode alive notification version=%d.%d " 2283 "subtype=%x alive=%x\n", uc->major, uc->minor, 2284 uc->subtype, le32toh(uc->valid)); 2285 2286 if (le32toh(uc->valid) != 1) { 2287 device_printf(sc->sc_dev, 2288 "microcontroller initialization failed\n"); 2289 wpi_stop_locked(sc); 2290 return; 2291 } 2292 /* Save the address of the error log in SRAM. */ 2293 sc->errptr = le32toh(uc->errptr); 2294 break; 2295 } 2296 case WPI_STATE_CHANGED: 2297 { 2298 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2299 BUS_DMASYNC_POSTREAD); 2300 2301 uint32_t *status = (uint32_t *)(desc + 1); 2302 2303 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2304 le32toh(*status)); 2305 2306 if (le32toh(*status) & 1) { 2307 WPI_NT_LOCK(sc); 2308 wpi_clear_node_table(sc); 2309 WPI_NT_UNLOCK(sc); 2310 taskqueue_enqueue(sc->sc_tq, 2311 &sc->sc_radiooff_task); 2312 return; 2313 } 2314 break; 2315 } 2316#ifdef WPI_DEBUG 2317 case WPI_START_SCAN: 2318 { 2319 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2320 BUS_DMASYNC_POSTREAD); 2321 2322 struct wpi_start_scan *scan = 2323 (struct wpi_start_scan *)(desc + 1); 2324 DPRINTF(sc, WPI_DEBUG_SCAN, 2325 "%s: scanning channel %d status %x\n", 2326 __func__, scan->chan, le32toh(scan->status)); 2327 2328 break; 2329 } 2330#endif 2331 case WPI_STOP_SCAN: 2332 { 2333 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2334 BUS_DMASYNC_POSTREAD); 2335 2336 struct wpi_stop_scan *scan = 2337 (struct wpi_stop_scan *)(desc + 1); 2338 2339 DPRINTF(sc, WPI_DEBUG_SCAN, 2340 "scan finished nchan=%d status=%d chan=%d\n", 2341 scan->nchan, scan->status, scan->chan); 2342 2343 WPI_RXON_LOCK(sc); 2344 callout_stop(&sc->scan_timeout); 2345 WPI_RXON_UNLOCK(sc); 2346 if (scan->status == WPI_SCAN_ABORTED) 2347 ieee80211_cancel_scan(vap); 2348 else 2349 ieee80211_scan_next(vap); 2350 break; 2351 } 2352 } 2353 2354 if (sc->rxq.cur % 8 == 0) { 2355 /* Tell the firmware what we have processed. */ 2356 sc->sc_update_rx_ring(sc); 2357 } 2358 } 2359} 2360 2361/* 2362 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2363 * from power-down sleep mode. 2364 */ 2365static void 2366wpi_wakeup_intr(struct wpi_softc *sc) 2367{ 2368 int qid; 2369 2370 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2371 "%s: ucode wakeup from power-down sleep\n", __func__); 2372 2373 /* Wakeup RX and TX rings. */ 2374 if (sc->rxq.update) { 2375 sc->rxq.update = 0; 2376 wpi_update_rx_ring(sc); 2377 } 2378 WPI_TXQ_LOCK(sc); 2379 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) { 2380 struct wpi_tx_ring *ring = &sc->txq[qid]; 2381 2382 if (ring->update) { 2383 ring->update = 0; 2384 wpi_update_tx_ring(sc, ring); 2385 } 2386 } 2387 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2388 WPI_TXQ_UNLOCK(sc); 2389} 2390 2391/* 2392 * This function prints firmware registers 2393 */ 2394#ifdef WPI_DEBUG 2395static void 2396wpi_debug_registers(struct wpi_softc *sc) 2397{ 2398 size_t i; 2399 static const uint32_t csr_tbl[] = { 2400 WPI_HW_IF_CONFIG, 2401 WPI_INT, 2402 WPI_INT_MASK, 2403 WPI_FH_INT, 2404 WPI_GPIO_IN, 2405 WPI_RESET, 2406 WPI_GP_CNTRL, 2407 WPI_EEPROM, 2408 WPI_EEPROM_GP, 2409 WPI_GIO, 2410 WPI_UCODE_GP1, 2411 WPI_UCODE_GP2, 2412 WPI_GIO_CHICKEN, 2413 WPI_ANA_PLL, 2414 WPI_DBG_HPET_MEM, 2415 }; 2416 static const uint32_t prph_tbl[] = { 2417 WPI_APMG_CLK_CTRL, 2418 WPI_APMG_PS, 2419 WPI_APMG_PCI_STT, 2420 WPI_APMG_RFKILL, 2421 }; 2422 2423 DPRINTF(sc, WPI_DEBUG_REGISTER,"%s","\n"); 2424 2425 for (i = 0; i < nitems(csr_tbl); i++) { 2426 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2427 wpi_get_csr_string(csr_tbl[i]), WPI_READ(sc, csr_tbl[i])); 2428 2429 if ((i + 1) % 2 == 0) 2430 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2431 } 2432 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n\n"); 2433 2434 if (wpi_nic_lock(sc) == 0) { 2435 for (i = 0; i < nitems(prph_tbl); i++) { 2436 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2437 wpi_get_prph_string(prph_tbl[i]), 2438 wpi_prph_read(sc, prph_tbl[i])); 2439 2440 if ((i + 1) % 2 == 0) 2441 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2442 } 2443 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2444 wpi_nic_unlock(sc); 2445 } else { 2446 DPRINTF(sc, WPI_DEBUG_REGISTER, 2447 "Cannot access internal registers.\n"); 2448 } 2449} 2450#endif 2451 2452/* 2453 * Dump the error log of the firmware when a firmware panic occurs. Although 2454 * we can't debug the firmware because it is neither open source nor free, it 2455 * can help us to identify certain classes of problems. 2456 */ 2457static void 2458wpi_fatal_intr(struct wpi_softc *sc) 2459{ 2460 struct wpi_fw_dump dump; 2461 uint32_t i, offset, count; 2462 2463 /* Check that the error log address is valid. */ 2464 if (sc->errptr < WPI_FW_DATA_BASE || 2465 sc->errptr + sizeof (dump) > 2466 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2467 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2468 sc->errptr); 2469 return; 2470 } 2471 if (wpi_nic_lock(sc) != 0) { 2472 printf("%s: could not read firmware error log\n", __func__); 2473 return; 2474 } 2475 /* Read number of entries in the log. */ 2476 count = wpi_mem_read(sc, sc->errptr); 2477 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2478 printf("%s: invalid count field (count = %u)\n", __func__, 2479 count); 2480 wpi_nic_unlock(sc); 2481 return; 2482 } 2483 /* Skip "count" field. */ 2484 offset = sc->errptr + sizeof (uint32_t); 2485 printf("firmware error log (count = %u):\n", count); 2486 for (i = 0; i < count; i++) { 2487 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2488 sizeof (dump) / sizeof (uint32_t)); 2489 2490 printf(" error type = \"%s\" (0x%08X)\n", 2491 (dump.desc < nitems(wpi_fw_errmsg)) ? 2492 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2493 dump.desc); 2494 printf(" error data = 0x%08X\n", 2495 dump.data); 2496 printf(" branch link = 0x%08X%08X\n", 2497 dump.blink[0], dump.blink[1]); 2498 printf(" interrupt link = 0x%08X%08X\n", 2499 dump.ilink[0], dump.ilink[1]); 2500 printf(" time = %u\n", dump.time); 2501 2502 offset += sizeof (dump); 2503 } 2504 wpi_nic_unlock(sc); 2505 /* Dump driver status (TX and RX rings) while we're here. */ 2506 printf("driver status:\n"); 2507 WPI_TXQ_LOCK(sc); 2508 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 2509 struct wpi_tx_ring *ring = &sc->txq[i]; 2510 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2511 i, ring->qid, ring->cur, ring->queued); 2512 } 2513 WPI_TXQ_UNLOCK(sc); 2514 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2515} 2516 2517static void 2518wpi_intr(void *arg) 2519{ 2520 struct wpi_softc *sc = arg; 2521 uint32_t r1, r2; 2522 2523 WPI_LOCK(sc); 2524 2525 /* Disable interrupts. */ 2526 WPI_WRITE(sc, WPI_INT_MASK, 0); 2527 2528 r1 = WPI_READ(sc, WPI_INT); 2529 2530 if (__predict_false(r1 == 0xffffffff || 2531 (r1 & 0xfffffff0) == 0xa5a5a5a0)) 2532 goto end; /* Hardware gone! */ 2533 2534 r2 = WPI_READ(sc, WPI_FH_INT); 2535 2536 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2537 r1, r2); 2538 2539 if (r1 == 0 && r2 == 0) 2540 goto done; /* Interrupt not for us. */ 2541 2542 /* Acknowledge interrupts. */ 2543 WPI_WRITE(sc, WPI_INT, r1); 2544 WPI_WRITE(sc, WPI_FH_INT, r2); 2545 2546 if (__predict_false(r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR))) { 2547 device_printf(sc->sc_dev, "fatal firmware error\n"); 2548#ifdef WPI_DEBUG 2549 wpi_debug_registers(sc); 2550#endif 2551 wpi_fatal_intr(sc); 2552 DPRINTF(sc, WPI_DEBUG_HW, 2553 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2554 "(Hardware Error)"); 2555 taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask); 2556 goto end; 2557 } 2558 2559 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2560 (r2 & WPI_FH_INT_RX)) 2561 wpi_notif_intr(sc); 2562 2563 if (r1 & WPI_INT_ALIVE) 2564 wakeup(sc); /* Firmware is alive. */ 2565 2566 if (r1 & WPI_INT_WAKEUP) 2567 wpi_wakeup_intr(sc); 2568 2569done: 2570 /* Re-enable interrupts. */ 2571 if (__predict_true(sc->sc_running)) 2572 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2573 2574end: WPI_UNLOCK(sc); 2575} 2576 2577static int 2578wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2579{ 2580 struct ieee80211_frame *wh; 2581 struct wpi_tx_cmd *cmd; 2582 struct wpi_tx_data *data; 2583 struct wpi_tx_desc *desc; 2584 struct wpi_tx_ring *ring; 2585 struct mbuf *m1; 2586 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2587 int error, i, hdrlen, nsegs, totlen, pad; 2588 2589 WPI_TXQ_LOCK(sc); 2590 2591 KASSERT(buf->size <= sizeof(buf->data), ("buffer overflow")); 2592 2593 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2594 2595 if (__predict_false(sc->sc_running == 0)) { 2596 /* wpi_stop() was called */ 2597 error = ENETDOWN; 2598 goto fail; 2599 } 2600 2601 wh = mtod(buf->m, struct ieee80211_frame *); 2602 hdrlen = ieee80211_anyhdrsize(wh); 2603 totlen = buf->m->m_pkthdr.len; 2604 2605 if (hdrlen & 3) { 2606 /* First segment length must be a multiple of 4. */ 2607 pad = 4 - (hdrlen & 3); 2608 } else 2609 pad = 0; 2610 2611 ring = &sc->txq[buf->ac]; 2612 desc = &ring->desc[ring->cur]; 2613 data = &ring->data[ring->cur]; 2614 2615 /* Prepare TX firmware command. */ 2616 cmd = &ring->cmd[ring->cur]; 2617 cmd->code = buf->code; 2618 cmd->flags = 0; 2619 cmd->qid = ring->qid; 2620 cmd->idx = ring->cur; 2621 2622 memcpy(cmd->data, buf->data, buf->size); 2623 2624 /* Save and trim IEEE802.11 header. */ 2625 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen); 2626 m_adj(buf->m, hdrlen); 2627 2628 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2629 segs, &nsegs, BUS_DMA_NOWAIT); 2630 if (error != 0 && error != EFBIG) { 2631 device_printf(sc->sc_dev, 2632 "%s: can't map mbuf (error %d)\n", __func__, error); 2633 goto fail; 2634 } 2635 if (error != 0) { 2636 /* Too many DMA segments, linearize mbuf. */ 2637 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1); 2638 if (m1 == NULL) { 2639 device_printf(sc->sc_dev, 2640 "%s: could not defrag mbuf\n", __func__); 2641 error = ENOBUFS; 2642 goto fail; 2643 } 2644 buf->m = m1; 2645 2646 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2647 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2648 if (__predict_false(error != 0)) { 2649 device_printf(sc->sc_dev, 2650 "%s: can't map mbuf (error %d)\n", __func__, 2651 error); 2652 goto fail; 2653 } 2654 } 2655 2656 KASSERT(nsegs < WPI_MAX_SCATTER, 2657 ("too many DMA segments, nsegs (%d) should be less than %d", 2658 nsegs, WPI_MAX_SCATTER)); 2659 2660 data->m = buf->m; 2661 data->ni = buf->ni; 2662 2663 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2664 __func__, ring->qid, ring->cur, totlen, nsegs); 2665 2666 /* Fill TX descriptor. */ 2667 desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs); 2668 /* First DMA segment is used by the TX command. */ 2669 desc->segs[0].addr = htole32(data->cmd_paddr); 2670 desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad); 2671 /* Other DMA segments are for data payload. */ 2672 seg = &segs[0]; 2673 for (i = 1; i <= nsegs; i++) { 2674 desc->segs[i].addr = htole32(seg->ds_addr); 2675 desc->segs[i].len = htole32(seg->ds_len); 2676 seg++; 2677 } 2678 2679 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2680 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2681 BUS_DMASYNC_PREWRITE); 2682 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2683 BUS_DMASYNC_PREWRITE); 2684 2685 /* Kick TX ring. */ 2686 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2687 sc->sc_update_tx_ring(sc, ring); 2688 2689 if (ring->qid < WPI_CMD_QUEUE_NUM) { 2690 WPI_TXQ_STATE_LOCK(sc); 2691 ring->queued++; 2692 callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc); 2693 WPI_TXQ_STATE_UNLOCK(sc); 2694 } 2695 2696 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2697 2698 WPI_TXQ_UNLOCK(sc); 2699 2700 return 0; 2701 2702fail: m_freem(buf->m); 2703 2704 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2705 2706 WPI_TXQ_UNLOCK(sc); 2707 2708 return error; 2709} 2710 2711/* 2712 * Construct the data packet for a transmit buffer. 2713 */ 2714static int 2715wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2716{ 2717 const struct ieee80211_txparam *tp; 2718 struct ieee80211vap *vap = ni->ni_vap; 2719 struct ieee80211com *ic = ni->ni_ic; 2720 struct wpi_node *wn = WPI_NODE(ni); 2721 struct ieee80211_channel *chan; 2722 struct ieee80211_frame *wh; 2723 struct ieee80211_key *k = NULL; 2724 struct wpi_buf tx_data; 2725 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2726 uint32_t flags; 2727 uint16_t qos; 2728 uint8_t tid, type; 2729 int ac, error, swcrypt, rate, ismcast, totlen; 2730 2731 wh = mtod(m, struct ieee80211_frame *); 2732 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2733 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2734 2735 /* Select EDCA Access Category and TX ring for this frame. */ 2736 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2737 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2738 tid = qos & IEEE80211_QOS_TID; 2739 } else { 2740 qos = 0; 2741 tid = 0; 2742 } 2743 ac = M_WME_GETAC(m); 2744 2745 chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ? 2746 ni->ni_chan : ic->ic_curchan; 2747 tp = &vap->iv_txparms[ieee80211_chan2mode(chan)]; 2748 2749 /* Choose a TX rate index. */ 2750 if (type == IEEE80211_FC0_TYPE_MGT) 2751 rate = tp->mgmtrate; 2752 else if (ismcast) 2753 rate = tp->mcastrate; 2754 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2755 rate = tp->ucastrate; 2756 else if (m->m_flags & M_EAPOL) 2757 rate = tp->mgmtrate; 2758 else { 2759 /* XXX pass pktlen */ 2760 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2761 rate = ni->ni_txrate; 2762 } 2763 2764 /* Encrypt the frame if need be. */ 2765 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2766 /* Retrieve key for TX. */ 2767 k = ieee80211_crypto_encap(ni, m); 2768 if (k == NULL) { 2769 error = ENOBUFS; 2770 goto fail; 2771 } 2772 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2773 2774 /* 802.11 header may have moved. */ 2775 wh = mtod(m, struct ieee80211_frame *); 2776 } 2777 totlen = m->m_pkthdr.len; 2778 2779 if (ieee80211_radiotap_active_vap(vap)) { 2780 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2781 2782 tap->wt_flags = 0; 2783 tap->wt_rate = rate; 2784 if (k != NULL) 2785 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2786 2787 ieee80211_radiotap_tx(vap, m); 2788 } 2789 2790 flags = 0; 2791 if (!ismcast) { 2792 /* Unicast frame, check if an ACK is expected. */ 2793 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2794 IEEE80211_QOS_ACKPOLICY_NOACK) 2795 flags |= WPI_TX_NEED_ACK; 2796 } 2797 2798 if (!IEEE80211_QOS_HAS_SEQ(wh)) 2799 flags |= WPI_TX_AUTO_SEQ; 2800 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2801 flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */ 2802 2803 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2804 if (!ismcast) { 2805 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2806 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2807 flags |= WPI_TX_NEED_RTS; 2808 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2809 WPI_RATE_IS_OFDM(rate)) { 2810 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2811 flags |= WPI_TX_NEED_CTS; 2812 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2813 flags |= WPI_TX_NEED_RTS; 2814 } 2815 2816 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2817 flags |= WPI_TX_FULL_TXOP; 2818 } 2819 2820 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2821 if (type == IEEE80211_FC0_TYPE_MGT) { 2822 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2823 2824 /* Tell HW to set timestamp in probe responses. */ 2825 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2826 flags |= WPI_TX_INSERT_TSTAMP; 2827 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2828 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2829 tx->timeout = htole16(3); 2830 else 2831 tx->timeout = htole16(2); 2832 } 2833 2834 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2835 tx->id = WPI_ID_BROADCAST; 2836 else { 2837 if (wn->id == WPI_ID_UNDEFINED) { 2838 device_printf(sc->sc_dev, 2839 "%s: undefined node id\n", __func__); 2840 error = EINVAL; 2841 goto fail; 2842 } 2843 2844 tx->id = wn->id; 2845 } 2846 2847 if (k != NULL && !swcrypt) { 2848 switch (k->wk_cipher->ic_cipher) { 2849 case IEEE80211_CIPHER_AES_CCM: 2850 tx->security = WPI_CIPHER_CCMP; 2851 break; 2852 2853 default: 2854 break; 2855 } 2856 2857 memcpy(tx->key, k->wk_key, k->wk_keylen); 2858 } 2859 2860 tx->len = htole16(totlen); 2861 tx->flags = htole32(flags); 2862 tx->plcp = rate2plcp(rate); 2863 tx->tid = tid; 2864 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2865 tx->ofdm_mask = 0xff; 2866 tx->cck_mask = 0x0f; 2867 tx->rts_ntries = 7; 2868 tx->data_ntries = tp->maxretry; 2869 2870 tx_data.ni = ni; 2871 tx_data.m = m; 2872 tx_data.size = sizeof(struct wpi_cmd_data); 2873 tx_data.code = WPI_CMD_TX_DATA; 2874 tx_data.ac = ac; 2875 2876 return wpi_cmd2(sc, &tx_data); 2877 2878fail: m_freem(m); 2879 return error; 2880} 2881 2882static int 2883wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, 2884 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 2885{ 2886 struct ieee80211vap *vap = ni->ni_vap; 2887 struct ieee80211_key *k = NULL; 2888 struct ieee80211_frame *wh; 2889 struct wpi_buf tx_data; 2890 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2891 uint32_t flags; 2892 uint8_t type; 2893 int ac, rate, swcrypt, totlen; 2894 2895 wh = mtod(m, struct ieee80211_frame *); 2896 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2897 2898 ac = params->ibp_pri & 3; 2899 2900 /* Choose a TX rate index. */ 2901 rate = params->ibp_rate0; 2902 2903 flags = 0; 2904 if (!IEEE80211_QOS_HAS_SEQ(wh)) 2905 flags |= WPI_TX_AUTO_SEQ; 2906 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2907 flags |= WPI_TX_NEED_ACK; 2908 if (params->ibp_flags & IEEE80211_BPF_RTS) 2909 flags |= WPI_TX_NEED_RTS; 2910 if (params->ibp_flags & IEEE80211_BPF_CTS) 2911 flags |= WPI_TX_NEED_CTS; 2912 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2913 flags |= WPI_TX_FULL_TXOP; 2914 2915 /* Encrypt the frame if need be. */ 2916 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) { 2917 /* Retrieve key for TX. */ 2918 k = ieee80211_crypto_encap(ni, m); 2919 if (k == NULL) { 2920 m_freem(m); 2921 return ENOBUFS; 2922 } 2923 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2924 2925 /* 802.11 header may have moved. */ 2926 wh = mtod(m, struct ieee80211_frame *); 2927 } 2928 totlen = m->m_pkthdr.len; 2929 2930 if (ieee80211_radiotap_active_vap(vap)) { 2931 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2932 2933 tap->wt_flags = 0; 2934 tap->wt_rate = rate; 2935 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) 2936 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2937 2938 ieee80211_radiotap_tx(vap, m); 2939 } 2940 2941 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2942 if (type == IEEE80211_FC0_TYPE_MGT) { 2943 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2944 2945 /* Tell HW to set timestamp in probe responses. */ 2946 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2947 flags |= WPI_TX_INSERT_TSTAMP; 2948 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2949 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2950 tx->timeout = htole16(3); 2951 else 2952 tx->timeout = htole16(2); 2953 } 2954 2955 if (k != NULL && !swcrypt) { 2956 switch (k->wk_cipher->ic_cipher) { 2957 case IEEE80211_CIPHER_AES_CCM: 2958 tx->security = WPI_CIPHER_CCMP; 2959 break; 2960 2961 default: 2962 break; 2963 } 2964 2965 memcpy(tx->key, k->wk_key, k->wk_keylen); 2966 } 2967 2968 tx->len = htole16(totlen); 2969 tx->flags = htole32(flags); 2970 tx->plcp = rate2plcp(rate); 2971 tx->id = WPI_ID_BROADCAST; 2972 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2973 tx->rts_ntries = params->ibp_try1; 2974 tx->data_ntries = params->ibp_try0; 2975 2976 tx_data.ni = ni; 2977 tx_data.m = m; 2978 tx_data.size = sizeof(struct wpi_cmd_data); 2979 tx_data.code = WPI_CMD_TX_DATA; 2980 tx_data.ac = ac; 2981 2982 return wpi_cmd2(sc, &tx_data); 2983} 2984 2985static __inline int 2986wpi_tx_ring_is_full(struct wpi_softc *sc, int ac) 2987{ 2988 struct wpi_tx_ring *ring = &sc->txq[ac]; 2989 int retval; 2990 2991 WPI_TXQ_STATE_LOCK(sc); 2992 retval = (ring->queued > WPI_TX_RING_HIMARK); 2993 WPI_TXQ_STATE_UNLOCK(sc); 2994 2995 return retval; 2996} 2997 2998static __inline void 2999wpi_handle_tx_failure(struct ieee80211_node *ni) 3000{ 3001 /* NB: m is reclaimed on tx failure */ 3002 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1); 3003 ieee80211_free_node(ni); 3004} 3005 3006static int 3007wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 3008 const struct ieee80211_bpf_params *params) 3009{ 3010 struct ieee80211com *ic = ni->ni_ic; 3011 struct wpi_softc *sc = ic->ic_softc; 3012 int ac, error = 0; 3013 3014 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3015 3016 ac = M_WME_GETAC(m); 3017 3018 WPI_TX_LOCK(sc); 3019 3020 if (sc->sc_running == 0 || wpi_tx_ring_is_full(sc, ac)) { 3021 m_freem(m); 3022 error = sc->sc_running ? ENOBUFS : ENETDOWN; 3023 goto unlock; 3024 } 3025 3026 if (params == NULL) { 3027 /* 3028 * Legacy path; interpret frame contents to decide 3029 * precisely how to send the frame. 3030 */ 3031 error = wpi_tx_data(sc, m, ni); 3032 } else { 3033 /* 3034 * Caller supplied explicit parameters to use in 3035 * sending the frame. 3036 */ 3037 error = wpi_tx_data_raw(sc, m, ni, params); 3038 } 3039 3040unlock: WPI_TX_UNLOCK(sc); 3041 3042 if (error != 0) { 3043 wpi_handle_tx_failure(ni); 3044 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3045 3046 return error; 3047 } 3048 3049 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3050 3051 return 0; 3052} 3053 3054static int 3055wpi_transmit(struct ieee80211com *ic, struct mbuf *m) 3056{ 3057 struct wpi_softc *sc = ic->ic_softc; 3058 struct ieee80211_node *ni; 3059 int ac, error; 3060 3061 WPI_TX_LOCK(sc); 3062 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 3063 3064 /* Check if interface is up & running. */ 3065 if (__predict_false(sc->sc_running == 0)) { 3066 error = ENXIO; 3067 goto unlock; 3068 } 3069 3070 /* Check for available space. */ 3071 ac = M_WME_GETAC(m); 3072 if (wpi_tx_ring_is_full(sc, ac)) { 3073 error = ENOBUFS; 3074 goto unlock; 3075 } 3076 3077 error = 0; 3078 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 3079 if (wpi_tx_data(sc, m, ni) != 0) { 3080 wpi_handle_tx_failure(ni); 3081 } 3082 3083 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 3084 3085unlock: WPI_TX_UNLOCK(sc); 3086 3087 return (error); 3088} 3089 3090static void 3091wpi_watchdog_rfkill(void *arg) 3092{ 3093 struct wpi_softc *sc = arg; 3094 struct ieee80211com *ic = &sc->sc_ic; 3095 3096 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n"); 3097 3098 /* No need to lock firmware memory. */ 3099 if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) { 3100 /* Radio kill switch is still off. */ 3101 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 3102 sc); 3103 } else 3104 ieee80211_runtask(ic, &sc->sc_radioon_task); 3105} 3106 3107static void 3108wpi_scan_timeout(void *arg) 3109{ 3110 struct wpi_softc *sc = arg; 3111 struct ieee80211com *ic = &sc->sc_ic; 3112 3113 ic_printf(ic, "scan timeout\n"); 3114 taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask); 3115} 3116 3117static void 3118wpi_tx_timeout(void *arg) 3119{ 3120 struct wpi_softc *sc = arg; 3121 struct ieee80211com *ic = &sc->sc_ic; 3122 3123 ic_printf(ic, "device timeout\n"); 3124 taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask); 3125} 3126 3127static void 3128wpi_parent(struct ieee80211com *ic) 3129{ 3130 struct wpi_softc *sc = ic->ic_softc; 3131 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3132 3133 if (ic->ic_nrunning > 0) { 3134 if (wpi_init(sc) == 0) { 3135 ieee80211_notify_radio(ic, 1); 3136 ieee80211_start_all(ic); 3137 } else { 3138 ieee80211_notify_radio(ic, 0); 3139 ieee80211_stop(vap); 3140 } 3141 } else 3142 wpi_stop(sc); 3143} 3144 3145/* 3146 * Send a command to the firmware. 3147 */ 3148static int 3149wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size, 3150 int async) 3151{ 3152 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 3153 struct wpi_tx_desc *desc; 3154 struct wpi_tx_data *data; 3155 struct wpi_tx_cmd *cmd; 3156 struct mbuf *m; 3157 bus_addr_t paddr; 3158 int totlen, error; 3159 3160 WPI_TXQ_LOCK(sc); 3161 3162 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3163 3164 if (__predict_false(sc->sc_running == 0)) { 3165 /* wpi_stop() was called */ 3166 if (code == WPI_CMD_SCAN) 3167 error = ENETDOWN; 3168 else 3169 error = 0; 3170 3171 goto fail; 3172 } 3173 3174 if (async == 0) 3175 WPI_LOCK_ASSERT(sc); 3176 3177 DPRINTF(sc, WPI_DEBUG_CMD, "%s: cmd %s size %zu async %d\n", 3178 __func__, wpi_cmd_str(code), size, async); 3179 3180 desc = &ring->desc[ring->cur]; 3181 data = &ring->data[ring->cur]; 3182 totlen = 4 + size; 3183 3184 if (size > sizeof cmd->data) { 3185 /* Command is too large to fit in a descriptor. */ 3186 if (totlen > MCLBYTES) { 3187 error = EINVAL; 3188 goto fail; 3189 } 3190 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 3191 if (m == NULL) { 3192 error = ENOMEM; 3193 goto fail; 3194 } 3195 cmd = mtod(m, struct wpi_tx_cmd *); 3196 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 3197 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 3198 if (error != 0) { 3199 m_freem(m); 3200 goto fail; 3201 } 3202 data->m = m; 3203 } else { 3204 cmd = &ring->cmd[ring->cur]; 3205 paddr = data->cmd_paddr; 3206 } 3207 3208 cmd->code = code; 3209 cmd->flags = 0; 3210 cmd->qid = ring->qid; 3211 cmd->idx = ring->cur; 3212 memcpy(cmd->data, buf, size); 3213 3214 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 3215 desc->segs[0].addr = htole32(paddr); 3216 desc->segs[0].len = htole32(totlen); 3217 3218 if (size > sizeof cmd->data) { 3219 bus_dmamap_sync(ring->data_dmat, data->map, 3220 BUS_DMASYNC_PREWRITE); 3221 } else { 3222 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 3223 BUS_DMASYNC_PREWRITE); 3224 } 3225 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 3226 BUS_DMASYNC_PREWRITE); 3227 3228 /* Kick command ring. */ 3229 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 3230 sc->sc_update_tx_ring(sc, ring); 3231 3232 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3233 3234 WPI_TXQ_UNLOCK(sc); 3235 3236 return async ? 0 : mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 3237 3238fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3239 3240 WPI_TXQ_UNLOCK(sc); 3241 3242 return error; 3243} 3244 3245/* 3246 * Configure HW multi-rate retries. 3247 */ 3248static int 3249wpi_mrr_setup(struct wpi_softc *sc) 3250{ 3251 struct ieee80211com *ic = &sc->sc_ic; 3252 struct wpi_mrr_setup mrr; 3253 int i, error; 3254 3255 /* CCK rates (not used with 802.11a). */ 3256 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 3257 mrr.rates[i].flags = 0; 3258 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3259 /* Fallback to the immediate lower CCK rate (if any.) */ 3260 mrr.rates[i].next = 3261 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 3262 /* Try twice at this rate before falling back to "next". */ 3263 mrr.rates[i].ntries = WPI_NTRIES_DEFAULT; 3264 } 3265 /* OFDM rates (not used with 802.11b). */ 3266 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 3267 mrr.rates[i].flags = 0; 3268 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3269 /* Fallback to the immediate lower rate (if any.) */ 3270 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 3271 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 3272 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 3273 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 3274 i - 1; 3275 /* Try twice at this rate before falling back to "next". */ 3276 mrr.rates[i].ntries = WPI_NTRIES_DEFAULT; 3277 } 3278 /* Setup MRR for control frames. */ 3279 mrr.which = htole32(WPI_MRR_CTL); 3280 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3281 if (error != 0) { 3282 device_printf(sc->sc_dev, 3283 "could not setup MRR for control frames\n"); 3284 return error; 3285 } 3286 /* Setup MRR for data frames. */ 3287 mrr.which = htole32(WPI_MRR_DATA); 3288 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3289 if (error != 0) { 3290 device_printf(sc->sc_dev, 3291 "could not setup MRR for data frames\n"); 3292 return error; 3293 } 3294 return 0; 3295} 3296 3297static int 3298wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3299{ 3300 struct ieee80211com *ic = ni->ni_ic; 3301 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 3302 struct wpi_node *wn = WPI_NODE(ni); 3303 struct wpi_node_info node; 3304 int error; 3305 3306 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3307 3308 if (wn->id == WPI_ID_UNDEFINED) 3309 return EINVAL; 3310 3311 memset(&node, 0, sizeof node); 3312 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3313 node.id = wn->id; 3314 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3315 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3316 node.action = htole32(WPI_ACTION_SET_RATE); 3317 node.antenna = WPI_ANTENNA_BOTH; 3318 3319 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding node %d (%s)\n", __func__, 3320 wn->id, ether_sprintf(ni->ni_macaddr)); 3321 3322 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 3323 if (error != 0) { 3324 device_printf(sc->sc_dev, 3325 "%s: wpi_cmd() call failed with error code %d\n", __func__, 3326 error); 3327 return error; 3328 } 3329 3330 if (wvp->wv_gtk != 0) { 3331 error = wpi_set_global_keys(ni); 3332 if (error != 0) { 3333 device_printf(sc->sc_dev, 3334 "%s: error while setting global keys\n", __func__); 3335 return ENXIO; 3336 } 3337 } 3338 3339 return 0; 3340} 3341 3342/* 3343 * Broadcast node is used to send group-addressed and management frames. 3344 */ 3345static int 3346wpi_add_broadcast_node(struct wpi_softc *sc, int async) 3347{ 3348 struct ieee80211com *ic = &sc->sc_ic; 3349 struct wpi_node_info node; 3350 3351 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3352 3353 memset(&node, 0, sizeof node); 3354 IEEE80211_ADDR_COPY(node.macaddr, ieee80211broadcastaddr); 3355 node.id = WPI_ID_BROADCAST; 3356 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3357 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3358 node.action = htole32(WPI_ACTION_SET_RATE); 3359 node.antenna = WPI_ANTENNA_BOTH; 3360 3361 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding broadcast node\n", __func__); 3362 3363 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 3364} 3365 3366static int 3367wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3368{ 3369 struct wpi_node *wn = WPI_NODE(ni); 3370 int error; 3371 3372 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3373 3374 wn->id = wpi_add_node_entry_sta(sc); 3375 3376 if ((error = wpi_add_node(sc, ni)) != 0) { 3377 wpi_del_node_entry(sc, wn->id); 3378 wn->id = WPI_ID_UNDEFINED; 3379 return error; 3380 } 3381 3382 return 0; 3383} 3384 3385static int 3386wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3387{ 3388 struct wpi_node *wn = WPI_NODE(ni); 3389 int error; 3390 3391 KASSERT(wn->id == WPI_ID_UNDEFINED, 3392 ("the node %d was added before", wn->id)); 3393 3394 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3395 3396 if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) { 3397 device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__); 3398 return ENOMEM; 3399 } 3400 3401 if ((error = wpi_add_node(sc, ni)) != 0) { 3402 wpi_del_node_entry(sc, wn->id); 3403 wn->id = WPI_ID_UNDEFINED; 3404 return error; 3405 } 3406 3407 return 0; 3408} 3409 3410static void 3411wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3412{ 3413 struct wpi_node *wn = WPI_NODE(ni); 3414 struct wpi_cmd_del_node node; 3415 int error; 3416 3417 KASSERT(wn->id != WPI_ID_UNDEFINED, ("undefined node id passed")); 3418 3419 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3420 3421 memset(&node, 0, sizeof node); 3422 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3423 node.count = 1; 3424 3425 DPRINTF(sc, WPI_DEBUG_NODE, "%s: deleting node %d (%s)\n", __func__, 3426 wn->id, ether_sprintf(ni->ni_macaddr)); 3427 3428 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3429 if (error != 0) { 3430 device_printf(sc->sc_dev, 3431 "%s: could not delete node %u, error %d\n", __func__, 3432 wn->id, error); 3433 } 3434} 3435 3436static int 3437wpi_updateedca(struct ieee80211com *ic) 3438{ 3439#define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3440 struct wpi_softc *sc = ic->ic_softc; 3441 struct wpi_edca_params cmd; 3442 int aci, error; 3443 3444 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3445 3446 memset(&cmd, 0, sizeof cmd); 3447 cmd.flags = htole32(WPI_EDCA_UPDATE); 3448 for (aci = 0; aci < WME_NUM_AC; aci++) { 3449 const struct wmeParams *ac = 3450 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 3451 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3452 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3453 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3454 cmd.ac[aci].txoplimit = 3455 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3456 3457 DPRINTF(sc, WPI_DEBUG_EDCA, 3458 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3459 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3460 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3461 cmd.ac[aci].txoplimit); 3462 } 3463 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3464 3465 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3466 3467 return error; 3468#undef WPI_EXP2 3469} 3470 3471static void 3472wpi_set_promisc(struct wpi_softc *sc) 3473{ 3474 struct ieee80211com *ic = &sc->sc_ic; 3475 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3476 uint32_t promisc_filter; 3477 3478 promisc_filter = WPI_FILTER_CTL; 3479 if (vap != NULL && vap->iv_opmode != IEEE80211_M_HOSTAP) 3480 promisc_filter |= WPI_FILTER_PROMISC; 3481 3482 if (ic->ic_promisc > 0) 3483 sc->rxon.filter |= htole32(promisc_filter); 3484 else 3485 sc->rxon.filter &= ~htole32(promisc_filter); 3486} 3487 3488static void 3489wpi_update_promisc(struct ieee80211com *ic) 3490{ 3491 struct wpi_softc *sc = ic->ic_softc; 3492 3493 WPI_RXON_LOCK(sc); 3494 wpi_set_promisc(sc); 3495 3496 if (wpi_send_rxon(sc, 1, 1) != 0) { 3497 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3498 __func__); 3499 } 3500 WPI_RXON_UNLOCK(sc); 3501} 3502 3503static void 3504wpi_update_mcast(struct ieee80211com *ic) 3505{ 3506 /* Ignore */ 3507} 3508 3509static void 3510wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3511{ 3512 struct wpi_cmd_led led; 3513 3514 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3515 3516 led.which = which; 3517 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3518 led.off = off; 3519 led.on = on; 3520 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3521} 3522 3523static int 3524wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3525{ 3526 struct wpi_cmd_timing cmd; 3527 uint64_t val, mod; 3528 3529 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3530 3531 memset(&cmd, 0, sizeof cmd); 3532 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3533 cmd.bintval = htole16(ni->ni_intval); 3534 cmd.lintval = htole16(10); 3535 3536 /* Compute remaining time until next beacon. */ 3537 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3538 mod = le64toh(cmd.tstamp) % val; 3539 cmd.binitval = htole32((uint32_t)(val - mod)); 3540 3541 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3542 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3543 3544 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3545} 3546 3547/* 3548 * This function is called periodically (every 60 seconds) to adjust output 3549 * power to temperature changes. 3550 */ 3551static void 3552wpi_power_calibration(struct wpi_softc *sc) 3553{ 3554 int temp; 3555 3556 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3557 3558 /* Update sensor data. */ 3559 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3560 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3561 3562 /* Sanity-check read value. */ 3563 if (temp < -260 || temp > 25) { 3564 /* This can't be correct, ignore. */ 3565 DPRINTF(sc, WPI_DEBUG_TEMP, 3566 "out-of-range temperature reported: %d\n", temp); 3567 return; 3568 } 3569 3570 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3571 3572 /* Adjust Tx power if need be. */ 3573 if (abs(temp - sc->temp) <= 6) 3574 return; 3575 3576 sc->temp = temp; 3577 3578 if (wpi_set_txpower(sc, 1) != 0) { 3579 /* just warn, too bad for the automatic calibration... */ 3580 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3581 } 3582} 3583 3584/* 3585 * Set TX power for current channel. 3586 */ 3587static int 3588wpi_set_txpower(struct wpi_softc *sc, int async) 3589{ 3590 struct wpi_power_group *group; 3591 struct wpi_cmd_txpower cmd; 3592 uint8_t chan; 3593 int idx, is_chan_5ghz, i; 3594 3595 /* Retrieve current channel from last RXON. */ 3596 chan = sc->rxon.chan; 3597 is_chan_5ghz = (sc->rxon.flags & htole32(WPI_RXON_24GHZ)) == 0; 3598 3599 /* Find the TX power group to which this channel belongs. */ 3600 if (is_chan_5ghz) { 3601 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3602 if (chan <= group->chan) 3603 break; 3604 } else 3605 group = &sc->groups[0]; 3606 3607 memset(&cmd, 0, sizeof cmd); 3608 cmd.band = is_chan_5ghz ? WPI_BAND_5GHZ : WPI_BAND_2GHZ; 3609 cmd.chan = htole16(chan); 3610 3611 /* Set TX power for all OFDM and CCK rates. */ 3612 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3613 /* Retrieve TX power for this channel/rate. */ 3614 idx = wpi_get_power_index(sc, group, chan, is_chan_5ghz, i); 3615 3616 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3617 3618 if (is_chan_5ghz) { 3619 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3620 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3621 } else { 3622 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3623 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3624 } 3625 DPRINTF(sc, WPI_DEBUG_TEMP, 3626 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3627 } 3628 3629 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3630} 3631 3632/* 3633 * Determine Tx power index for a given channel/rate combination. 3634 * This takes into account the regulatory information from EEPROM and the 3635 * current temperature. 3636 */ 3637static int 3638wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3639 uint8_t chan, int is_chan_5ghz, int ridx) 3640{ 3641/* Fixed-point arithmetic division using a n-bit fractional part. */ 3642#define fdivround(a, b, n) \ 3643 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3644 3645/* Linear interpolation. */ 3646#define interpolate(x, x1, y1, x2, y2, n) \ 3647 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3648 3649 struct wpi_power_sample *sample; 3650 int pwr, idx; 3651 3652 /* Default TX power is group maximum TX power minus 3dB. */ 3653 pwr = group->maxpwr / 2; 3654 3655 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3656 switch (ridx) { 3657 case WPI_RIDX_OFDM36: 3658 pwr -= is_chan_5ghz ? 5 : 0; 3659 break; 3660 case WPI_RIDX_OFDM48: 3661 pwr -= is_chan_5ghz ? 10 : 7; 3662 break; 3663 case WPI_RIDX_OFDM54: 3664 pwr -= is_chan_5ghz ? 12 : 9; 3665 break; 3666 } 3667 3668 /* Never exceed the channel maximum allowed TX power. */ 3669 pwr = min(pwr, sc->maxpwr[chan]); 3670 3671 /* Retrieve TX power index into gain tables from samples. */ 3672 for (sample = group->samples; sample < &group->samples[3]; sample++) 3673 if (pwr > sample[1].power) 3674 break; 3675 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3676 idx = interpolate(pwr, sample[0].power, sample[0].index, 3677 sample[1].power, sample[1].index, 19); 3678 3679 /*- 3680 * Adjust power index based on current temperature: 3681 * - if cooler than factory-calibrated: decrease output power 3682 * - if warmer than factory-calibrated: increase output power 3683 */ 3684 idx -= (sc->temp - group->temp) * 11 / 100; 3685 3686 /* Decrease TX power for CCK rates (-5dB). */ 3687 if (ridx >= WPI_RIDX_CCK1) 3688 idx += 10; 3689 3690 /* Make sure idx stays in a valid range. */ 3691 if (idx < 0) 3692 return 0; 3693 if (idx > WPI_MAX_PWR_INDEX) 3694 return WPI_MAX_PWR_INDEX; 3695 return idx; 3696 3697#undef interpolate 3698#undef fdivround 3699} 3700 3701/* 3702 * Set STA mode power saving level (between 0 and 5). 3703 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3704 */ 3705static int 3706wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3707{ 3708 struct wpi_pmgt_cmd cmd; 3709 const struct wpi_pmgt *pmgt; 3710 uint32_t max, skip_dtim; 3711 uint32_t reg; 3712 int i; 3713 3714 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3715 "%s: dtim=%d, level=%d, async=%d\n", 3716 __func__, dtim, level, async); 3717 3718 /* Select which PS parameters to use. */ 3719 if (dtim <= 10) 3720 pmgt = &wpi_pmgt[0][level]; 3721 else 3722 pmgt = &wpi_pmgt[1][level]; 3723 3724 memset(&cmd, 0, sizeof cmd); 3725 if (level != 0) /* not CAM */ 3726 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3727 /* Retrieve PCIe Active State Power Management (ASPM). */ 3728 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 3729 if (!(reg & 0x1)) /* L0s Entry disabled. */ 3730 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3731 3732 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3733 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3734 3735 if (dtim == 0) { 3736 dtim = 1; 3737 skip_dtim = 0; 3738 } else 3739 skip_dtim = pmgt->skip_dtim; 3740 3741 if (skip_dtim != 0) { 3742 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3743 max = pmgt->intval[4]; 3744 if (max == (uint32_t)-1) 3745 max = dtim * (skip_dtim + 1); 3746 else if (max > dtim) 3747 max = (max / dtim) * dtim; 3748 } else 3749 max = dtim; 3750 3751 for (i = 0; i < 5; i++) 3752 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3753 3754 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3755} 3756 3757static int 3758wpi_send_btcoex(struct wpi_softc *sc) 3759{ 3760 struct wpi_bluetooth cmd; 3761 3762 memset(&cmd, 0, sizeof cmd); 3763 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3764 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3765 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3766 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3767 __func__); 3768 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3769} 3770 3771static int 3772wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3773{ 3774 int error; 3775 3776 if (async) 3777 WPI_RXON_LOCK_ASSERT(sc); 3778 3779 if (assoc && wpi_check_bss_filter(sc) != 0) { 3780 struct wpi_assoc rxon_assoc; 3781 3782 rxon_assoc.flags = sc->rxon.flags; 3783 rxon_assoc.filter = sc->rxon.filter; 3784 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3785 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3786 rxon_assoc.reserved = 0; 3787 3788 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3789 sizeof (struct wpi_assoc), async); 3790 if (error != 0) { 3791 device_printf(sc->sc_dev, 3792 "RXON_ASSOC command failed, error %d\n", error); 3793 return error; 3794 } 3795 } else { 3796 if (async) { 3797 WPI_NT_LOCK(sc); 3798 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3799 sizeof (struct wpi_rxon), async); 3800 if (error == 0) 3801 wpi_clear_node_table(sc); 3802 WPI_NT_UNLOCK(sc); 3803 } else { 3804 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3805 sizeof (struct wpi_rxon), async); 3806 if (error == 0) 3807 wpi_clear_node_table(sc); 3808 } 3809 3810 if (error != 0) { 3811 device_printf(sc->sc_dev, 3812 "RXON command failed, error %d\n", error); 3813 return error; 3814 } 3815 3816 /* Add broadcast node. */ 3817 error = wpi_add_broadcast_node(sc, async); 3818 if (error != 0) { 3819 device_printf(sc->sc_dev, 3820 "could not add broadcast node, error %d\n", error); 3821 return error; 3822 } 3823 } 3824 3825 /* Configuration has changed, set Tx power accordingly. */ 3826 if ((error = wpi_set_txpower(sc, async)) != 0) { 3827 device_printf(sc->sc_dev, 3828 "%s: could not set TX power, error %d\n", __func__, error); 3829 return error; 3830 } 3831 3832 return 0; 3833} 3834 3835/** 3836 * Configure the card to listen to a particular channel, this transisions the 3837 * card in to being able to receive frames from remote devices. 3838 */ 3839static int 3840wpi_config(struct wpi_softc *sc) 3841{ 3842 struct ieee80211com *ic = &sc->sc_ic; 3843 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3844 struct ieee80211_channel *c = ic->ic_curchan; 3845 int error; 3846 3847 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3848 3849 /* Set power saving level to CAM during initialization. */ 3850 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3851 device_printf(sc->sc_dev, 3852 "%s: could not set power saving level\n", __func__); 3853 return error; 3854 } 3855 3856 /* Configure bluetooth coexistence. */ 3857 if ((error = wpi_send_btcoex(sc)) != 0) { 3858 device_printf(sc->sc_dev, 3859 "could not configure bluetooth coexistence\n"); 3860 return error; 3861 } 3862 3863 /* Configure adapter. */ 3864 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3865 IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr); 3866 3867 /* Set default channel. */ 3868 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 3869 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3870 if (IEEE80211_IS_CHAN_2GHZ(c)) 3871 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3872 3873 sc->rxon.filter = WPI_FILTER_MULTICAST; 3874 switch (ic->ic_opmode) { 3875 case IEEE80211_M_STA: 3876 sc->rxon.mode = WPI_MODE_STA; 3877 break; 3878 case IEEE80211_M_IBSS: 3879 sc->rxon.mode = WPI_MODE_IBSS; 3880 sc->rxon.filter |= WPI_FILTER_BEACON; 3881 break; 3882 case IEEE80211_M_HOSTAP: 3883 /* XXX workaround for beaconing */ 3884 sc->rxon.mode = WPI_MODE_IBSS; 3885 sc->rxon.filter |= WPI_FILTER_ASSOC | WPI_FILTER_PROMISC; 3886 break; 3887 case IEEE80211_M_AHDEMO: 3888 sc->rxon.mode = WPI_MODE_HOSTAP; 3889 break; 3890 case IEEE80211_M_MONITOR: 3891 sc->rxon.mode = WPI_MODE_MONITOR; 3892 break; 3893 default: 3894 device_printf(sc->sc_dev, "unknown opmode %d\n", 3895 ic->ic_opmode); 3896 return EINVAL; 3897 } 3898 sc->rxon.filter = htole32(sc->rxon.filter); 3899 wpi_set_promisc(sc); 3900 sc->rxon.cck_mask = 0x0f; /* not yet negotiated */ 3901 sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */ 3902 3903 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) { 3904 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3905 __func__); 3906 return error; 3907 } 3908 3909 /* Setup rate scalling. */ 3910 if ((error = wpi_mrr_setup(sc)) != 0) { 3911 device_printf(sc->sc_dev, "could not setup MRR, error %d\n", 3912 error); 3913 return error; 3914 } 3915 3916 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3917 3918 return 0; 3919} 3920 3921static uint16_t 3922wpi_get_active_dwell_time(struct wpi_softc *sc, 3923 struct ieee80211_channel *c, uint8_t n_probes) 3924{ 3925 /* No channel? Default to 2GHz settings. */ 3926 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) { 3927 return (WPI_ACTIVE_DWELL_TIME_2GHZ + 3928 WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1)); 3929 } 3930 3931 /* 5GHz dwell time. */ 3932 return (WPI_ACTIVE_DWELL_TIME_5GHZ + 3933 WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1)); 3934} 3935 3936/* 3937 * Limit the total dwell time. 3938 * 3939 * Returns the dwell time in milliseconds. 3940 */ 3941static uint16_t 3942wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time) 3943{ 3944 struct ieee80211com *ic = &sc->sc_ic; 3945 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3946 int bintval = 0; 3947 3948 /* bintval is in TU (1.024mS) */ 3949 if (vap != NULL) 3950 bintval = vap->iv_bss->ni_intval; 3951 3952 /* 3953 * If it's non-zero, we should calculate the minimum of 3954 * it and the DWELL_BASE. 3955 * 3956 * XXX Yes, the math should take into account that bintval 3957 * is 1.024mS, not 1mS.. 3958 */ 3959 if (bintval > 0) { 3960 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 3961 bintval); 3962 return (MIN(dwell_time, bintval - WPI_CHANNEL_TUNE_TIME * 2)); 3963 } 3964 3965 /* No association context? Default. */ 3966 return dwell_time; 3967} 3968 3969static uint16_t 3970wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 3971{ 3972 uint16_t passive; 3973 3974 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 3975 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 3976 else 3977 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 3978 3979 /* Clamp to the beacon interval if we're associated. */ 3980 return (wpi_limit_dwell(sc, passive)); 3981} 3982 3983static uint32_t 3984wpi_get_scan_pause_time(uint32_t time, uint16_t bintval) 3985{ 3986 uint32_t mod = (time % bintval) * IEEE80211_DUR_TU; 3987 uint32_t nbeacons = time / bintval; 3988 3989 if (mod > WPI_PAUSE_MAX_TIME) 3990 mod = WPI_PAUSE_MAX_TIME; 3991 3992 return WPI_PAUSE_SCAN(nbeacons, mod); 3993} 3994 3995/* 3996 * Send a scan request to the firmware. 3997 */ 3998static int 3999wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 4000{ 4001 struct ieee80211com *ic = &sc->sc_ic; 4002 struct ieee80211_scan_state *ss = ic->ic_scan; 4003 struct ieee80211vap *vap = ss->ss_vap; 4004 struct wpi_scan_hdr *hdr; 4005 struct wpi_cmd_data *tx; 4006 struct wpi_scan_essid *essids; 4007 struct wpi_scan_chan *chan; 4008 struct ieee80211_frame *wh; 4009 struct ieee80211_rateset *rs; 4010 uint16_t dwell_active, dwell_passive; 4011 uint8_t *buf, *frm; 4012 int bgscan, bintval, buflen, error, i, nssid; 4013 4014 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4015 4016 /* 4017 * We are absolutely not allowed to send a scan command when another 4018 * scan command is pending. 4019 */ 4020 if (callout_pending(&sc->scan_timeout)) { 4021 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 4022 __func__); 4023 error = EAGAIN; 4024 goto fail; 4025 } 4026 4027 bgscan = wpi_check_bss_filter(sc); 4028 bintval = vap->iv_bss->ni_intval; 4029 if (bgscan != 0 && 4030 bintval < WPI_QUIET_TIME_DEFAULT + WPI_CHANNEL_TUNE_TIME * 2) { 4031 error = EOPNOTSUPP; 4032 goto fail; 4033 } 4034 4035 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 4036 if (buf == NULL) { 4037 device_printf(sc->sc_dev, 4038 "%s: could not allocate buffer for scan command\n", 4039 __func__); 4040 error = ENOMEM; 4041 goto fail; 4042 } 4043 hdr = (struct wpi_scan_hdr *)buf; 4044 4045 /* 4046 * Move to the next channel if no packets are received within 10 msecs 4047 * after sending the probe request. 4048 */ 4049 hdr->quiet_time = htole16(WPI_QUIET_TIME_DEFAULT); 4050 hdr->quiet_threshold = htole16(1); 4051 4052 if (bgscan != 0) { 4053 /* 4054 * Max needs to be greater than active and passive and quiet! 4055 * It's also in microseconds! 4056 */ 4057 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 4058 hdr->pause_svc = htole32(wpi_get_scan_pause_time(100, 4059 bintval)); 4060 } 4061 4062 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 4063 4064 tx = (struct wpi_cmd_data *)(hdr + 1); 4065 tx->flags = htole32(WPI_TX_AUTO_SEQ); 4066 tx->id = WPI_ID_BROADCAST; 4067 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 4068 4069 if (IEEE80211_IS_CHAN_5GHZ(c)) { 4070 /* Send probe requests at 6Mbps. */ 4071 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 4072 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 4073 } else { 4074 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 4075 /* Send probe requests at 1Mbps. */ 4076 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 4077 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 4078 } 4079 4080 essids = (struct wpi_scan_essid *)(tx + 1); 4081 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 4082 for (i = 0; i < nssid; i++) { 4083 essids[i].id = IEEE80211_ELEMID_SSID; 4084 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 4085 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 4086#ifdef WPI_DEBUG 4087 if (sc->sc_debug & WPI_DEBUG_SCAN) { 4088 printf("Scanning Essid: "); 4089 ieee80211_print_essid(essids[i].data, essids[i].len); 4090 printf("\n"); 4091 } 4092#endif 4093 } 4094 4095 /* 4096 * Build a probe request frame. Most of the following code is a 4097 * copy & paste of what is done in net80211. 4098 */ 4099 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 4100 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 4101 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 4102 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 4103 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr); 4104 IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr); 4105 IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr); 4106 4107 frm = (uint8_t *)(wh + 1); 4108 frm = ieee80211_add_ssid(frm, NULL, 0); 4109 frm = ieee80211_add_rates(frm, rs); 4110 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 4111 frm = ieee80211_add_xrates(frm, rs); 4112 4113 /* Set length of probe request. */ 4114 tx->len = htole16(frm - (uint8_t *)wh); 4115 4116 /* 4117 * Construct information about the channel that we 4118 * want to scan. The firmware expects this to be directly 4119 * after the scan probe request 4120 */ 4121 chan = (struct wpi_scan_chan *)frm; 4122 chan->chan = htole16(ieee80211_chan2ieee(ic, c)); 4123 chan->flags = 0; 4124 if (nssid) { 4125 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 4126 chan->flags |= WPI_CHAN_NPBREQS(nssid); 4127 } else 4128 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 4129 4130 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 4131 chan->flags |= WPI_CHAN_ACTIVE; 4132 4133 /* 4134 * Calculate the active/passive dwell times. 4135 */ 4136 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 4137 dwell_passive = wpi_get_passive_dwell_time(sc, c); 4138 4139 /* Make sure they're valid. */ 4140 if (dwell_active > dwell_passive) 4141 dwell_active = dwell_passive; 4142 4143 chan->active = htole16(dwell_active); 4144 chan->passive = htole16(dwell_passive); 4145 4146 chan->dsp_gain = 0x6e; /* Default level */ 4147 4148 if (IEEE80211_IS_CHAN_5GHZ(c)) 4149 chan->rf_gain = 0x3b; 4150 else 4151 chan->rf_gain = 0x28; 4152 4153 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 4154 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 4155 4156 hdr->nchan++; 4157 4158 if (hdr->nchan == 1 && sc->rxon.chan == chan->chan) { 4159 /* XXX Force probe request transmission. */ 4160 memcpy(chan + 1, chan, sizeof (struct wpi_scan_chan)); 4161 4162 chan++; 4163 4164 /* Reduce unnecessary delay. */ 4165 chan->flags = 0; 4166 chan->passive = chan->active = hdr->quiet_time; 4167 4168 hdr->nchan++; 4169 } 4170 4171 chan++; 4172 4173 buflen = (uint8_t *)chan - buf; 4174 hdr->len = htole16(buflen); 4175 4176 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 4177 hdr->nchan); 4178 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 4179 free(buf, M_DEVBUF); 4180 4181 if (error != 0) 4182 goto fail; 4183 4184 callout_reset(&sc->scan_timeout, 5*hz, wpi_scan_timeout, sc); 4185 4186 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4187 4188 return 0; 4189 4190fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4191 4192 return error; 4193} 4194 4195static int 4196wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 4197{ 4198 struct ieee80211com *ic = vap->iv_ic; 4199 struct ieee80211_node *ni = vap->iv_bss; 4200 struct ieee80211_channel *c = ni->ni_chan; 4201 int error; 4202 4203 WPI_RXON_LOCK(sc); 4204 4205 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4206 4207 /* Update adapter configuration. */ 4208 sc->rxon.associd = 0; 4209 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 4210 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4211 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4212 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4213 if (IEEE80211_IS_CHAN_2GHZ(c)) 4214 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4215 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4216 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4217 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4218 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4219 if (IEEE80211_IS_CHAN_A(c)) { 4220 sc->rxon.cck_mask = 0; 4221 sc->rxon.ofdm_mask = 0x15; 4222 } else if (IEEE80211_IS_CHAN_B(c)) { 4223 sc->rxon.cck_mask = 0x03; 4224 sc->rxon.ofdm_mask = 0; 4225 } else { 4226 /* Assume 802.11b/g. */ 4227 sc->rxon.cck_mask = 0x0f; 4228 sc->rxon.ofdm_mask = 0x15; 4229 } 4230 4231 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n", 4232 sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask, 4233 sc->rxon.ofdm_mask); 4234 4235 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4236 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4237 __func__); 4238 } 4239 4240 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4241 4242 WPI_RXON_UNLOCK(sc); 4243 4244 return error; 4245} 4246 4247static int 4248wpi_config_beacon(struct wpi_vap *wvp) 4249{ 4250 struct ieee80211vap *vap = &wvp->wv_vap; 4251 struct ieee80211com *ic = vap->iv_ic; 4252 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off; 4253 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4254 struct wpi_softc *sc = ic->ic_softc; 4255 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 4256 struct ieee80211_tim_ie *tie; 4257 struct mbuf *m; 4258 uint8_t *ptr; 4259 int error; 4260 4261 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4262 4263 WPI_VAP_LOCK_ASSERT(wvp); 4264 4265 cmd->len = htole16(bcn->m->m_pkthdr.len); 4266 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 4267 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 4268 4269 /* XXX seems to be unused */ 4270 if (*(bo->bo_tim) == IEEE80211_ELEMID_TIM) { 4271 tie = (struct ieee80211_tim_ie *) bo->bo_tim; 4272 ptr = mtod(bcn->m, uint8_t *); 4273 4274 cmd->tim = htole16(bo->bo_tim - ptr); 4275 cmd->timsz = tie->tim_len; 4276 } 4277 4278 /* Necessary for recursion in ieee80211_beacon_update(). */ 4279 m = bcn->m; 4280 bcn->m = m_dup(m, M_NOWAIT); 4281 if (bcn->m == NULL) { 4282 device_printf(sc->sc_dev, 4283 "%s: could not copy beacon frame\n", __func__); 4284 error = ENOMEM; 4285 goto end; 4286 } 4287 4288 if ((error = wpi_cmd2(sc, bcn)) != 0) { 4289 device_printf(sc->sc_dev, 4290 "%s: could not update beacon frame, error %d", __func__, 4291 error); 4292 } 4293 4294 /* Restore mbuf. */ 4295end: bcn->m = m; 4296 4297 return error; 4298} 4299 4300static int 4301wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 4302{ 4303 struct ieee80211vap *vap = ni->ni_vap; 4304 struct wpi_vap *wvp = WPI_VAP(vap); 4305 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4306 struct mbuf *m; 4307 int error; 4308 4309 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4310 4311 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 4312 return EINVAL; 4313 4314 m = ieee80211_beacon_alloc(ni); 4315 if (m == NULL) { 4316 device_printf(sc->sc_dev, 4317 "%s: could not allocate beacon frame\n", __func__); 4318 return ENOMEM; 4319 } 4320 4321 WPI_VAP_LOCK(wvp); 4322 if (bcn->m != NULL) 4323 m_freem(bcn->m); 4324 4325 bcn->m = m; 4326 4327 error = wpi_config_beacon(wvp); 4328 WPI_VAP_UNLOCK(wvp); 4329 4330 return error; 4331} 4332 4333static void 4334wpi_update_beacon(struct ieee80211vap *vap, int item) 4335{ 4336 struct wpi_softc *sc = vap->iv_ic->ic_softc; 4337 struct wpi_vap *wvp = WPI_VAP(vap); 4338 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4339 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off; 4340 struct ieee80211_node *ni = vap->iv_bss; 4341 int mcast = 0; 4342 4343 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4344 4345 WPI_VAP_LOCK(wvp); 4346 if (bcn->m == NULL) { 4347 bcn->m = ieee80211_beacon_alloc(ni); 4348 if (bcn->m == NULL) { 4349 device_printf(sc->sc_dev, 4350 "%s: could not allocate beacon frame\n", __func__); 4351 4352 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, 4353 __func__); 4354 4355 WPI_VAP_UNLOCK(wvp); 4356 return; 4357 } 4358 } 4359 WPI_VAP_UNLOCK(wvp); 4360 4361 if (item == IEEE80211_BEACON_TIM) 4362 mcast = 1; /* TODO */ 4363 4364 setbit(bo->bo_flags, item); 4365 ieee80211_beacon_update(ni, bcn->m, mcast); 4366 4367 WPI_VAP_LOCK(wvp); 4368 wpi_config_beacon(wvp); 4369 WPI_VAP_UNLOCK(wvp); 4370 4371 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4372} 4373 4374static void 4375wpi_newassoc(struct ieee80211_node *ni, int isnew) 4376{ 4377 struct ieee80211vap *vap = ni->ni_vap; 4378 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4379 struct wpi_node *wn = WPI_NODE(ni); 4380 int error; 4381 4382 WPI_NT_LOCK(sc); 4383 4384 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4385 4386 if (vap->iv_opmode != IEEE80211_M_STA && wn->id == WPI_ID_UNDEFINED) { 4387 if ((error = wpi_add_ibss_node(sc, ni)) != 0) { 4388 device_printf(sc->sc_dev, 4389 "%s: could not add IBSS node, error %d\n", 4390 __func__, error); 4391 } 4392 } 4393 WPI_NT_UNLOCK(sc); 4394} 4395 4396static int 4397wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 4398{ 4399 struct ieee80211com *ic = vap->iv_ic; 4400 struct ieee80211_node *ni = vap->iv_bss; 4401 struct ieee80211_channel *c = ni->ni_chan; 4402 int error; 4403 4404 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4405 4406 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 4407 /* Link LED blinks while monitoring. */ 4408 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 4409 return 0; 4410 } 4411 4412 /* XXX kernel panic workaround */ 4413 if (c == IEEE80211_CHAN_ANYC) { 4414 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 4415 __func__); 4416 return EINVAL; 4417 } 4418 4419 if ((error = wpi_set_timing(sc, ni)) != 0) { 4420 device_printf(sc->sc_dev, 4421 "%s: could not set timing, error %d\n", __func__, error); 4422 return error; 4423 } 4424 4425 /* Update adapter configuration. */ 4426 WPI_RXON_LOCK(sc); 4427 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4428 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 4429 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4430 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4431 if (IEEE80211_IS_CHAN_2GHZ(c)) 4432 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4433 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4434 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4435 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4436 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4437 if (IEEE80211_IS_CHAN_A(c)) { 4438 sc->rxon.cck_mask = 0; 4439 sc->rxon.ofdm_mask = 0x15; 4440 } else if (IEEE80211_IS_CHAN_B(c)) { 4441 sc->rxon.cck_mask = 0x03; 4442 sc->rxon.ofdm_mask = 0; 4443 } else { 4444 /* Assume 802.11b/g. */ 4445 sc->rxon.cck_mask = 0x0f; 4446 sc->rxon.ofdm_mask = 0x15; 4447 } 4448 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 4449 4450 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 4451 sc->rxon.chan, sc->rxon.flags); 4452 4453 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4454 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4455 __func__); 4456 return error; 4457 } 4458 4459 /* Start periodic calibration timer. */ 4460 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 4461 4462 WPI_RXON_UNLOCK(sc); 4463 4464 if (vap->iv_opmode == IEEE80211_M_IBSS || 4465 vap->iv_opmode == IEEE80211_M_HOSTAP) { 4466 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 4467 device_printf(sc->sc_dev, 4468 "%s: could not setup beacon, error %d\n", __func__, 4469 error); 4470 return error; 4471 } 4472 } 4473 4474 if (vap->iv_opmode == IEEE80211_M_STA) { 4475 /* Add BSS node. */ 4476 WPI_NT_LOCK(sc); 4477 error = wpi_add_sta_node(sc, ni); 4478 WPI_NT_UNLOCK(sc); 4479 if (error != 0) { 4480 device_printf(sc->sc_dev, 4481 "%s: could not add BSS node, error %d\n", __func__, 4482 error); 4483 return error; 4484 } 4485 } 4486 4487 /* Link LED always on while associated. */ 4488 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4489 4490 /* Enable power-saving mode if requested by user. */ 4491 if ((vap->iv_flags & IEEE80211_F_PMGTON) && 4492 vap->iv_opmode != IEEE80211_M_IBSS) 4493 (void)wpi_set_pslevel(sc, 0, 3, 1); 4494 4495 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4496 4497 return 0; 4498} 4499 4500static int 4501wpi_load_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4502{ 4503 const struct ieee80211_cipher *cip = k->wk_cipher; 4504 struct ieee80211vap *vap = ni->ni_vap; 4505 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4506 struct wpi_node *wn = WPI_NODE(ni); 4507 struct wpi_node_info node; 4508 uint16_t kflags; 4509 int error; 4510 4511 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4512 4513 if (wpi_check_node_entry(sc, wn->id) == 0) { 4514 device_printf(sc->sc_dev, "%s: node does not exist\n", 4515 __func__); 4516 return 0; 4517 } 4518 4519 switch (cip->ic_cipher) { 4520 case IEEE80211_CIPHER_AES_CCM: 4521 kflags = WPI_KFLAG_CCMP; 4522 break; 4523 4524 default: 4525 device_printf(sc->sc_dev, "%s: unknown cipher %d\n", __func__, 4526 cip->ic_cipher); 4527 return 0; 4528 } 4529 4530 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4531 if (k->wk_flags & IEEE80211_KEY_GROUP) 4532 kflags |= WPI_KFLAG_MULTICAST; 4533 4534 memset(&node, 0, sizeof node); 4535 node.id = wn->id; 4536 node.control = WPI_NODE_UPDATE; 4537 node.flags = WPI_FLAG_KEY_SET; 4538 node.kflags = htole16(kflags); 4539 memcpy(node.key, k->wk_key, k->wk_keylen); 4540again: 4541 DPRINTF(sc, WPI_DEBUG_KEY, 4542 "%s: setting %s key id %d for node %d (%s)\n", __func__, 4543 (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", k->wk_keyix, 4544 node.id, ether_sprintf(ni->ni_macaddr)); 4545 4546 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4547 if (error != 0) { 4548 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4549 error); 4550 return !error; 4551 } 4552 4553 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4554 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4555 kflags |= WPI_KFLAG_MULTICAST; 4556 node.kflags = htole16(kflags); 4557 4558 goto again; 4559 } 4560 4561 return 1; 4562} 4563 4564static void 4565wpi_load_key_cb(void *arg, struct ieee80211_node *ni) 4566{ 4567 const struct ieee80211_key *k = arg; 4568 struct ieee80211vap *vap = ni->ni_vap; 4569 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4570 struct wpi_node *wn = WPI_NODE(ni); 4571 int error; 4572 4573 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4574 return; 4575 4576 WPI_NT_LOCK(sc); 4577 error = wpi_load_key(ni, k); 4578 WPI_NT_UNLOCK(sc); 4579 4580 if (error == 0) { 4581 device_printf(sc->sc_dev, "%s: error while setting key\n", 4582 __func__); 4583 } 4584} 4585 4586static int 4587wpi_set_global_keys(struct ieee80211_node *ni) 4588{ 4589 struct ieee80211vap *vap = ni->ni_vap; 4590 struct ieee80211_key *wk = &vap->iv_nw_keys[0]; 4591 int error = 1; 4592 4593 for (; wk < &vap->iv_nw_keys[IEEE80211_WEP_NKID] && error; wk++) 4594 if (wk->wk_keyix != IEEE80211_KEYIX_NONE) 4595 error = wpi_load_key(ni, wk); 4596 4597 return !error; 4598} 4599 4600static int 4601wpi_del_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4602{ 4603 struct ieee80211vap *vap = ni->ni_vap; 4604 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4605 struct wpi_node *wn = WPI_NODE(ni); 4606 struct wpi_node_info node; 4607 uint16_t kflags; 4608 int error; 4609 4610 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4611 4612 if (wpi_check_node_entry(sc, wn->id) == 0) { 4613 DPRINTF(sc, WPI_DEBUG_KEY, "%s: node was removed\n", __func__); 4614 return 1; /* Nothing to do. */ 4615 } 4616 4617 kflags = WPI_KFLAG_KID(k->wk_keyix); 4618 if (k->wk_flags & IEEE80211_KEY_GROUP) 4619 kflags |= WPI_KFLAG_MULTICAST; 4620 4621 memset(&node, 0, sizeof node); 4622 node.id = wn->id; 4623 node.control = WPI_NODE_UPDATE; 4624 node.flags = WPI_FLAG_KEY_SET; 4625 node.kflags = htole16(kflags); 4626again: 4627 DPRINTF(sc, WPI_DEBUG_KEY, "%s: deleting %s key %d for node %d (%s)\n", 4628 __func__, (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", 4629 k->wk_keyix, node.id, ether_sprintf(ni->ni_macaddr)); 4630 4631 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4632 if (error != 0) { 4633 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4634 error); 4635 return !error; 4636 } 4637 4638 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4639 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4640 kflags |= WPI_KFLAG_MULTICAST; 4641 node.kflags = htole16(kflags); 4642 4643 goto again; 4644 } 4645 4646 return 1; 4647} 4648 4649static void 4650wpi_del_key_cb(void *arg, struct ieee80211_node *ni) 4651{ 4652 const struct ieee80211_key *k = arg; 4653 struct ieee80211vap *vap = ni->ni_vap; 4654 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4655 struct wpi_node *wn = WPI_NODE(ni); 4656 int error; 4657 4658 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4659 return; 4660 4661 WPI_NT_LOCK(sc); 4662 error = wpi_del_key(ni, k); 4663 WPI_NT_UNLOCK(sc); 4664 4665 if (error == 0) { 4666 device_printf(sc->sc_dev, "%s: error while deleting key\n", 4667 __func__); 4668 } 4669} 4670 4671static int 4672wpi_process_key(struct ieee80211vap *vap, const struct ieee80211_key *k, 4673 int set) 4674{ 4675 struct ieee80211com *ic = vap->iv_ic; 4676 struct wpi_softc *sc = ic->ic_softc; 4677 struct wpi_vap *wvp = WPI_VAP(vap); 4678 struct ieee80211_node *ni; 4679 int error, ni_ref = 0; 4680 4681 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4682 4683 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) { 4684 /* Not for us. */ 4685 return 1; 4686 } 4687 4688 if (!(k->wk_flags & IEEE80211_KEY_RECV)) { 4689 /* XMIT keys are handled in wpi_tx_data(). */ 4690 return 1; 4691 } 4692 4693 /* Handle group keys. */ 4694 if (&vap->iv_nw_keys[0] <= k && 4695 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4696 WPI_NT_LOCK(sc); 4697 if (set) 4698 wvp->wv_gtk |= WPI_VAP_KEY(k->wk_keyix); 4699 else 4700 wvp->wv_gtk &= ~WPI_VAP_KEY(k->wk_keyix); 4701 WPI_NT_UNLOCK(sc); 4702 4703 if (vap->iv_state == IEEE80211_S_RUN) { 4704 ieee80211_iterate_nodes(&ic->ic_sta, 4705 set ? wpi_load_key_cb : wpi_del_key_cb, 4706 __DECONST(void *, k)); 4707 } 4708 4709 return 1; 4710 } 4711 4712 switch (vap->iv_opmode) { 4713 case IEEE80211_M_STA: 4714 ni = vap->iv_bss; 4715 break; 4716 4717 case IEEE80211_M_IBSS: 4718 case IEEE80211_M_AHDEMO: 4719 case IEEE80211_M_HOSTAP: 4720 ni = ieee80211_find_vap_node(&ic->ic_sta, vap, k->wk_macaddr); 4721 if (ni == NULL) 4722 return 0; /* should not happen */ 4723 4724 ni_ref = 1; 4725 break; 4726 4727 default: 4728 device_printf(sc->sc_dev, "%s: unknown opmode %d\n", __func__, 4729 vap->iv_opmode); 4730 return 0; 4731 } 4732 4733 WPI_NT_LOCK(sc); 4734 if (set) 4735 error = wpi_load_key(ni, k); 4736 else 4737 error = wpi_del_key(ni, k); 4738 WPI_NT_UNLOCK(sc); 4739 4740 if (ni_ref) 4741 ieee80211_node_decref(ni); 4742 4743 return error; 4744} 4745 4746static int 4747wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k) 4748{ 4749 return wpi_process_key(vap, k, 1); 4750} 4751 4752static int 4753wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4754{ 4755 return wpi_process_key(vap, k, 0); 4756} 4757 4758/* 4759 * This function is called after the runtime firmware notifies us of its 4760 * readiness (called in a process context). 4761 */ 4762static int 4763wpi_post_alive(struct wpi_softc *sc) 4764{ 4765 int ntries, error; 4766 4767 /* Check (again) that the radio is not disabled. */ 4768 if ((error = wpi_nic_lock(sc)) != 0) 4769 return error; 4770 4771 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4772 4773 /* NB: Runtime firmware must be up and running. */ 4774 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4775 device_printf(sc->sc_dev, 4776 "RF switch: radio disabled (%s)\n", __func__); 4777 wpi_nic_unlock(sc); 4778 return EPERM; /* :-) */ 4779 } 4780 wpi_nic_unlock(sc); 4781 4782 /* Wait for thermal sensor to calibrate. */ 4783 for (ntries = 0; ntries < 1000; ntries++) { 4784 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4785 break; 4786 DELAY(10); 4787 } 4788 4789 if (ntries == 1000) { 4790 device_printf(sc->sc_dev, 4791 "timeout waiting for thermal sensor calibration\n"); 4792 return ETIMEDOUT; 4793 } 4794 4795 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4796 return 0; 4797} 4798 4799/* 4800 * The firmware boot code is small and is intended to be copied directly into 4801 * the NIC internal memory (no DMA transfer). 4802 */ 4803static int 4804wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 4805{ 4806 int error, ntries; 4807 4808 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4809 4810 size /= sizeof (uint32_t); 4811 4812 if ((error = wpi_nic_lock(sc)) != 0) 4813 return error; 4814 4815 /* Copy microcode image into NIC memory. */ 4816 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4817 (const uint32_t *)ucode, size); 4818 4819 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4820 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4821 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4822 4823 /* Start boot load now. */ 4824 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4825 4826 /* Wait for transfer to complete. */ 4827 for (ntries = 0; ntries < 1000; ntries++) { 4828 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4829 DPRINTF(sc, WPI_DEBUG_HW, 4830 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4831 WPI_FH_TX_STATUS_IDLE(6), 4832 status & WPI_FH_TX_STATUS_IDLE(6)); 4833 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4834 DPRINTF(sc, WPI_DEBUG_HW, 4835 "Status Match! - ntries = %d\n", ntries); 4836 break; 4837 } 4838 DELAY(10); 4839 } 4840 if (ntries == 1000) { 4841 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4842 __func__); 4843 wpi_nic_unlock(sc); 4844 return ETIMEDOUT; 4845 } 4846 4847 /* Enable boot after power up. */ 4848 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4849 4850 wpi_nic_unlock(sc); 4851 return 0; 4852} 4853 4854static int 4855wpi_load_firmware(struct wpi_softc *sc) 4856{ 4857 struct wpi_fw_info *fw = &sc->fw; 4858 struct wpi_dma_info *dma = &sc->fw_dma; 4859 int error; 4860 4861 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4862 4863 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4864 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4865 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4866 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4867 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4868 4869 /* Tell adapter where to find initialization sections. */ 4870 if ((error = wpi_nic_lock(sc)) != 0) 4871 return error; 4872 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4873 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4874 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4875 dma->paddr + WPI_FW_DATA_MAXSZ); 4876 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4877 wpi_nic_unlock(sc); 4878 4879 /* Load firmware boot code. */ 4880 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4881 if (error != 0) { 4882 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4883 __func__); 4884 return error; 4885 } 4886 4887 /* Now press "execute". */ 4888 WPI_WRITE(sc, WPI_RESET, 0); 4889 4890 /* Wait at most one second for first alive notification. */ 4891 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4892 device_printf(sc->sc_dev, 4893 "%s: timeout waiting for adapter to initialize, error %d\n", 4894 __func__, error); 4895 return error; 4896 } 4897 4898 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4899 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4900 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4901 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4902 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4903 4904 /* Tell adapter where to find runtime sections. */ 4905 if ((error = wpi_nic_lock(sc)) != 0) 4906 return error; 4907 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4908 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 4909 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4910 dma->paddr + WPI_FW_DATA_MAXSZ); 4911 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 4912 WPI_FW_UPDATED | fw->main.textsz); 4913 wpi_nic_unlock(sc); 4914 4915 return 0; 4916} 4917 4918static int 4919wpi_read_firmware(struct wpi_softc *sc) 4920{ 4921 const struct firmware *fp; 4922 struct wpi_fw_info *fw = &sc->fw; 4923 const struct wpi_firmware_hdr *hdr; 4924 int error; 4925 4926 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4927 4928 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4929 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 4930 4931 WPI_UNLOCK(sc); 4932 fp = firmware_get(WPI_FW_NAME); 4933 WPI_LOCK(sc); 4934 4935 if (fp == NULL) { 4936 device_printf(sc->sc_dev, 4937 "could not load firmware image '%s'\n", WPI_FW_NAME); 4938 return EINVAL; 4939 } 4940 4941 sc->fw_fp = fp; 4942 4943 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 4944 device_printf(sc->sc_dev, 4945 "firmware file too short: %zu bytes\n", fp->datasize); 4946 error = EINVAL; 4947 goto fail; 4948 } 4949 4950 fw->size = fp->datasize; 4951 fw->data = (const uint8_t *)fp->data; 4952 4953 /* Extract firmware header information. */ 4954 hdr = (const struct wpi_firmware_hdr *)fw->data; 4955 4956 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 4957 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 4958 4959 fw->main.textsz = le32toh(hdr->rtextsz); 4960 fw->main.datasz = le32toh(hdr->rdatasz); 4961 fw->init.textsz = le32toh(hdr->itextsz); 4962 fw->init.datasz = le32toh(hdr->idatasz); 4963 fw->boot.textsz = le32toh(hdr->btextsz); 4964 fw->boot.datasz = 0; 4965 4966 /* Sanity-check firmware header. */ 4967 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 4968 fw->main.datasz > WPI_FW_DATA_MAXSZ || 4969 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 4970 fw->init.datasz > WPI_FW_DATA_MAXSZ || 4971 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 4972 (fw->boot.textsz & 3) != 0) { 4973 device_printf(sc->sc_dev, "invalid firmware header\n"); 4974 error = EINVAL; 4975 goto fail; 4976 } 4977 4978 /* Check that all firmware sections fit. */ 4979 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 4980 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 4981 device_printf(sc->sc_dev, 4982 "firmware file too short: %zu bytes\n", fw->size); 4983 error = EINVAL; 4984 goto fail; 4985 } 4986 4987 /* Get pointers to firmware sections. */ 4988 fw->main.text = (const uint8_t *)(hdr + 1); 4989 fw->main.data = fw->main.text + fw->main.textsz; 4990 fw->init.text = fw->main.data + fw->main.datasz; 4991 fw->init.data = fw->init.text + fw->init.textsz; 4992 fw->boot.text = fw->init.data + fw->init.datasz; 4993 4994 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4995 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 4996 "runtime (text: %u, data: %u) init (text: %u, data %u) " 4997 "boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver), 4998 fw->main.textsz, fw->main.datasz, 4999 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 5000 5001 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 5002 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 5003 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 5004 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 5005 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 5006 5007 return 0; 5008 5009fail: wpi_unload_firmware(sc); 5010 return error; 5011} 5012 5013/** 5014 * Free the referenced firmware image 5015 */ 5016static void 5017wpi_unload_firmware(struct wpi_softc *sc) 5018{ 5019 if (sc->fw_fp != NULL) { 5020 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 5021 sc->fw_fp = NULL; 5022 } 5023} 5024 5025static int 5026wpi_clock_wait(struct wpi_softc *sc) 5027{ 5028 int ntries; 5029 5030 /* Set "initialization complete" bit. */ 5031 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 5032 5033 /* Wait for clock stabilization. */ 5034 for (ntries = 0; ntries < 2500; ntries++) { 5035 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 5036 return 0; 5037 DELAY(100); 5038 } 5039 device_printf(sc->sc_dev, 5040 "%s: timeout waiting for clock stabilization\n", __func__); 5041 5042 return ETIMEDOUT; 5043} 5044 5045static int 5046wpi_apm_init(struct wpi_softc *sc) 5047{ 5048 uint32_t reg; 5049 int error; 5050 5051 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5052 5053 /* Disable L0s exit timer (NMI bug workaround). */ 5054 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 5055 /* Don't wait for ICH L0s (ICH bug workaround). */ 5056 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 5057 5058 /* Set FH wait threshold to max (HW bug under stress workaround). */ 5059 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 5060 5061 /* Retrieve PCIe Active State Power Management (ASPM). */ 5062 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 5063 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 5064 if (reg & 0x02) /* L1 Entry enabled. */ 5065 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 5066 else 5067 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 5068 5069 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 5070 5071 /* Wait for clock stabilization before accessing prph. */ 5072 if ((error = wpi_clock_wait(sc)) != 0) 5073 return error; 5074 5075 if ((error = wpi_nic_lock(sc)) != 0) 5076 return error; 5077 /* Cleanup. */ 5078 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 0x00000400); 5079 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000200); 5080 5081 /* Enable DMA and BSM (Bootstrap State Machine). */ 5082 wpi_prph_write(sc, WPI_APMG_CLK_EN, 5083 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 5084 DELAY(20); 5085 /* Disable L1-Active. */ 5086 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 5087 wpi_nic_unlock(sc); 5088 5089 return 0; 5090} 5091 5092static void 5093wpi_apm_stop_master(struct wpi_softc *sc) 5094{ 5095 int ntries; 5096 5097 /* Stop busmaster DMA activity. */ 5098 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 5099 5100 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 5101 WPI_GP_CNTRL_MAC_PS) 5102 return; /* Already asleep. */ 5103 5104 for (ntries = 0; ntries < 100; ntries++) { 5105 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 5106 return; 5107 DELAY(10); 5108 } 5109 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", 5110 __func__); 5111} 5112 5113static void 5114wpi_apm_stop(struct wpi_softc *sc) 5115{ 5116 wpi_apm_stop_master(sc); 5117 5118 /* Reset the entire device. */ 5119 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 5120 DELAY(10); 5121 /* Clear "initialization complete" bit. */ 5122 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 5123} 5124 5125static void 5126wpi_nic_config(struct wpi_softc *sc) 5127{ 5128 uint32_t rev; 5129 5130 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5131 5132 /* voodoo from the Linux "driver".. */ 5133 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 5134 if ((rev & 0xc0) == 0x40) 5135 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 5136 else if (!(rev & 0x80)) 5137 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 5138 5139 if (sc->cap == 0x80) 5140 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 5141 5142 if ((sc->rev & 0xf0) == 0xd0) 5143 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 5144 else 5145 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 5146 5147 if (sc->type > 1) 5148 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 5149} 5150 5151static int 5152wpi_hw_init(struct wpi_softc *sc) 5153{ 5154 int chnl, ntries, error; 5155 5156 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 5157 5158 /* Clear pending interrupts. */ 5159 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5160 5161 if ((error = wpi_apm_init(sc)) != 0) { 5162 device_printf(sc->sc_dev, 5163 "%s: could not power ON adapter, error %d\n", __func__, 5164 error); 5165 return error; 5166 } 5167 5168 /* Select VMAIN power source. */ 5169 if ((error = wpi_nic_lock(sc)) != 0) 5170 return error; 5171 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 5172 wpi_nic_unlock(sc); 5173 /* Spin until VMAIN gets selected. */ 5174 for (ntries = 0; ntries < 5000; ntries++) { 5175 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 5176 break; 5177 DELAY(10); 5178 } 5179 if (ntries == 5000) { 5180 device_printf(sc->sc_dev, "timeout selecting power source\n"); 5181 return ETIMEDOUT; 5182 } 5183 5184 /* Perform adapter initialization. */ 5185 wpi_nic_config(sc); 5186 5187 /* Initialize RX ring. */ 5188 if ((error = wpi_nic_lock(sc)) != 0) 5189 return error; 5190 /* Set physical address of RX ring. */ 5191 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 5192 /* Set physical address of RX read pointer. */ 5193 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 5194 offsetof(struct wpi_shared, next)); 5195 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 5196 /* Enable RX. */ 5197 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 5198 WPI_FH_RX_CONFIG_DMA_ENA | 5199 WPI_FH_RX_CONFIG_RDRBD_ENA | 5200 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 5201 WPI_FH_RX_CONFIG_MAXFRAG | 5202 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 5203 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 5204 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 5205 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 5206 wpi_nic_unlock(sc); 5207 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 5208 5209 /* Initialize TX rings. */ 5210 if ((error = wpi_nic_lock(sc)) != 0) 5211 return error; 5212 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 5213 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 5214 /* Enable all 6 TX rings. */ 5215 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 5216 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 5217 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 5218 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 5219 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 5220 /* Set physical address of TX rings. */ 5221 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 5222 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 5223 5224 /* Enable all DMA channels. */ 5225 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5226 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 5227 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 5228 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 5229 } 5230 wpi_nic_unlock(sc); 5231 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 5232 5233 /* Clear "radio off" and "commands blocked" bits. */ 5234 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5235 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 5236 5237 /* Clear pending interrupts. */ 5238 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5239 /* Enable interrupts. */ 5240 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 5241 5242 /* _Really_ make sure "radio off" bit is cleared! */ 5243 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5244 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5245 5246 if ((error = wpi_load_firmware(sc)) != 0) { 5247 device_printf(sc->sc_dev, 5248 "%s: could not load firmware, error %d\n", __func__, 5249 error); 5250 return error; 5251 } 5252 /* Wait at most one second for firmware alive notification. */ 5253 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 5254 device_printf(sc->sc_dev, 5255 "%s: timeout waiting for adapter to initialize, error %d\n", 5256 __func__, error); 5257 return error; 5258 } 5259 5260 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5261 5262 /* Do post-firmware initialization. */ 5263 return wpi_post_alive(sc); 5264} 5265 5266static void 5267wpi_hw_stop(struct wpi_softc *sc) 5268{ 5269 int chnl, qid, ntries; 5270 5271 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5272 5273 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 5274 wpi_nic_lock(sc); 5275 5276 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 5277 5278 /* Disable interrupts. */ 5279 WPI_WRITE(sc, WPI_INT_MASK, 0); 5280 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5281 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 5282 5283 /* Make sure we no longer hold the NIC lock. */ 5284 wpi_nic_unlock(sc); 5285 5286 if (wpi_nic_lock(sc) == 0) { 5287 /* Stop TX scheduler. */ 5288 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 5289 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 5290 5291 /* Stop all DMA channels. */ 5292 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5293 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 5294 for (ntries = 0; ntries < 200; ntries++) { 5295 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 5296 WPI_FH_TX_STATUS_IDLE(chnl)) 5297 break; 5298 DELAY(10); 5299 } 5300 } 5301 wpi_nic_unlock(sc); 5302 } 5303 5304 /* Stop RX ring. */ 5305 wpi_reset_rx_ring(sc); 5306 5307 /* Reset all TX rings. */ 5308 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 5309 wpi_reset_tx_ring(sc, &sc->txq[qid]); 5310 5311 if (wpi_nic_lock(sc) == 0) { 5312 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 5313 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 5314 wpi_nic_unlock(sc); 5315 } 5316 DELAY(5); 5317 /* Power OFF adapter. */ 5318 wpi_apm_stop(sc); 5319} 5320 5321static void 5322wpi_radio_on(void *arg0, int pending) 5323{ 5324 struct wpi_softc *sc = arg0; 5325 struct ieee80211com *ic = &sc->sc_ic; 5326 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5327 5328 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 5329 5330 WPI_LOCK(sc); 5331 callout_stop(&sc->watchdog_rfkill); 5332 WPI_UNLOCK(sc); 5333 5334 if (vap != NULL) 5335 ieee80211_init(vap); 5336} 5337 5338static void 5339wpi_radio_off(void *arg0, int pending) 5340{ 5341 struct wpi_softc *sc = arg0; 5342 struct ieee80211com *ic = &sc->sc_ic; 5343 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5344 5345 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 5346 5347 ieee80211_notify_radio(ic, 0); 5348 wpi_stop(sc); 5349 if (vap != NULL) 5350 ieee80211_stop(vap); 5351 5352 WPI_LOCK(sc); 5353 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 5354 WPI_UNLOCK(sc); 5355} 5356 5357static int 5358wpi_init(struct wpi_softc *sc) 5359{ 5360 int error = 0; 5361 5362 WPI_LOCK(sc); 5363 5364 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 5365 5366 if (sc->sc_running != 0) 5367 goto end; 5368 5369 /* Check that the radio is not disabled by hardware switch. */ 5370 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 5371 device_printf(sc->sc_dev, 5372 "RF switch: radio disabled (%s)\n", __func__); 5373 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 5374 sc); 5375 error = EINPROGRESS; 5376 goto end; 5377 } 5378 5379 /* Read firmware images from the filesystem. */ 5380 if ((error = wpi_read_firmware(sc)) != 0) { 5381 device_printf(sc->sc_dev, 5382 "%s: could not read firmware, error %d\n", __func__, 5383 error); 5384 goto end; 5385 } 5386 5387 sc->sc_running = 1; 5388 5389 /* Initialize hardware and upload firmware. */ 5390 error = wpi_hw_init(sc); 5391 wpi_unload_firmware(sc); 5392 if (error != 0) { 5393 device_printf(sc->sc_dev, 5394 "%s: could not initialize hardware, error %d\n", __func__, 5395 error); 5396 goto fail; 5397 } 5398 5399 /* Configure adapter now that it is ready. */ 5400 if ((error = wpi_config(sc)) != 0) { 5401 device_printf(sc->sc_dev, 5402 "%s: could not configure device, error %d\n", __func__, 5403 error); 5404 goto fail; 5405 } 5406 5407 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5408 5409 WPI_UNLOCK(sc); 5410 5411 return 0; 5412 5413fail: wpi_stop_locked(sc); 5414 5415end: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 5416 WPI_UNLOCK(sc); 5417 5418 return error; 5419} 5420 5421static void 5422wpi_stop_locked(struct wpi_softc *sc) 5423{ 5424 5425 WPI_LOCK_ASSERT(sc); 5426 5427 if (sc->sc_running == 0) 5428 return; 5429 5430 WPI_TX_LOCK(sc); 5431 WPI_TXQ_LOCK(sc); 5432 sc->sc_running = 0; 5433 WPI_TXQ_UNLOCK(sc); 5434 WPI_TX_UNLOCK(sc); 5435 5436 WPI_TXQ_STATE_LOCK(sc); 5437 callout_stop(&sc->tx_timeout); 5438 WPI_TXQ_STATE_UNLOCK(sc); 5439 5440 WPI_RXON_LOCK(sc); 5441 callout_stop(&sc->scan_timeout); 5442 callout_stop(&sc->calib_to); 5443 WPI_RXON_UNLOCK(sc); 5444 5445 /* Power OFF hardware. */ 5446 wpi_hw_stop(sc); 5447} 5448 5449static void 5450wpi_stop(struct wpi_softc *sc) 5451{ 5452 WPI_LOCK(sc); 5453 wpi_stop_locked(sc); 5454 WPI_UNLOCK(sc); 5455} 5456 5457/* 5458 * Callback from net80211 to start a scan. 5459 */ 5460static void 5461wpi_scan_start(struct ieee80211com *ic) 5462{ 5463 struct wpi_softc *sc = ic->ic_softc; 5464 5465 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 5466} 5467 5468/* 5469 * Callback from net80211 to terminate a scan. 5470 */ 5471static void 5472wpi_scan_end(struct ieee80211com *ic) 5473{ 5474 struct wpi_softc *sc = ic->ic_softc; 5475 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5476 5477 if (vap->iv_state == IEEE80211_S_RUN) 5478 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 5479} 5480 5481/** 5482 * Called by the net80211 framework to indicate to the driver 5483 * that the channel should be changed 5484 */ 5485static void 5486wpi_set_channel(struct ieee80211com *ic) 5487{ 5488 const struct ieee80211_channel *c = ic->ic_curchan; 5489 struct wpi_softc *sc = ic->ic_softc; 5490 int error; 5491 5492 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5493 5494 WPI_LOCK(sc); 5495 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 5496 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 5497 WPI_UNLOCK(sc); 5498 WPI_TX_LOCK(sc); 5499 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 5500 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 5501 WPI_TX_UNLOCK(sc); 5502 5503 /* 5504 * Only need to set the channel in Monitor mode. AP scanning and auth 5505 * are already taken care of by their respective firmware commands. 5506 */ 5507 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 5508 WPI_RXON_LOCK(sc); 5509 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 5510 if (IEEE80211_IS_CHAN_2GHZ(c)) { 5511 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 5512 WPI_RXON_24GHZ); 5513 } else { 5514 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 5515 WPI_RXON_24GHZ); 5516 } 5517 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) 5518 device_printf(sc->sc_dev, 5519 "%s: error %d setting channel\n", __func__, 5520 error); 5521 WPI_RXON_UNLOCK(sc); 5522 } 5523} 5524 5525/** 5526 * Called by net80211 to indicate that we need to scan the current 5527 * channel. The channel is previously be set via the wpi_set_channel 5528 * callback. 5529 */ 5530static void 5531wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 5532{ 5533 struct ieee80211vap *vap = ss->ss_vap; 5534 struct ieee80211com *ic = vap->iv_ic; 5535 struct wpi_softc *sc = ic->ic_softc; 5536 int error; 5537 5538 WPI_RXON_LOCK(sc); 5539 error = wpi_scan(sc, ic->ic_curchan); 5540 WPI_RXON_UNLOCK(sc); 5541 if (error != 0) 5542 ieee80211_cancel_scan(vap); 5543} 5544 5545/** 5546 * Called by the net80211 framework to indicate 5547 * the minimum dwell time has been met, terminate the scan. 5548 * We don't actually terminate the scan as the firmware will notify 5549 * us when it's finished and we have no way to interrupt it. 5550 */ 5551static void 5552wpi_scan_mindwell(struct ieee80211_scan_state *ss) 5553{ 5554 /* NB: don't try to abort scan; wait for firmware to finish */ 5555} 5556 5557static void 5558wpi_hw_reset(void *arg, int pending) 5559{ 5560 struct wpi_softc *sc = arg; 5561 struct ieee80211com *ic = &sc->sc_ic; 5562 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5563 5564 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5565 5566 ieee80211_notify_radio(ic, 0); 5567 if (vap != NULL && (ic->ic_flags & IEEE80211_F_SCAN)) 5568 ieee80211_cancel_scan(vap); 5569 5570 wpi_stop(sc); 5571 if (vap != NULL) { 5572 ieee80211_stop(vap); 5573 ieee80211_init(vap); 5574 } 5575} 5576