if_wpi.c revision 282397
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 282397 2015-05-03 23:36:25Z 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_reset_rx_ring(struct wpi_softc *); 156static void wpi_free_rx_ring(struct wpi_softc *); 157static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 158 int); 159static void wpi_update_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 160static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 161static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 162static int wpi_read_eeprom(struct wpi_softc *, 163 uint8_t macaddr[IEEE80211_ADDR_LEN]); 164static uint32_t wpi_eeprom_channel_flags(struct wpi_eeprom_chan *); 165static void wpi_read_eeprom_band(struct wpi_softc *, int); 166static int wpi_read_eeprom_channels(struct wpi_softc *, int); 167static struct wpi_eeprom_chan *wpi_find_eeprom_channel(struct wpi_softc *, 168 struct ieee80211_channel *); 169static int wpi_setregdomain(struct ieee80211com *, 170 struct ieee80211_regdomain *, int, 171 struct ieee80211_channel[]); 172static int wpi_read_eeprom_group(struct wpi_softc *, int); 173static int wpi_add_node_entry_adhoc(struct wpi_softc *); 174static void wpi_node_free(struct ieee80211_node *); 175static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 176 const uint8_t mac[IEEE80211_ADDR_LEN]); 177static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 178static void wpi_calib_timeout(void *); 179static void wpi_rx_done(struct wpi_softc *, struct wpi_rx_desc *, 180 struct wpi_rx_data *); 181static void wpi_rx_statistics(struct wpi_softc *, struct wpi_rx_desc *, 182 struct wpi_rx_data *); 183static void wpi_tx_done(struct wpi_softc *, struct wpi_rx_desc *); 184static void wpi_cmd_done(struct wpi_softc *, struct wpi_rx_desc *); 185static void wpi_notif_intr(struct wpi_softc *); 186static void wpi_wakeup_intr(struct wpi_softc *); 187#ifdef WPI_DEBUG 188static void wpi_debug_registers(struct wpi_softc *); 189#endif 190static void wpi_fatal_intr(struct wpi_softc *); 191static void wpi_intr(void *); 192static int wpi_cmd2(struct wpi_softc *, struct wpi_buf *); 193static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 194 struct ieee80211_node *); 195static int wpi_tx_data_raw(struct wpi_softc *, struct mbuf *, 196 struct ieee80211_node *, 197 const struct ieee80211_bpf_params *); 198static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 199 const struct ieee80211_bpf_params *); 200static void wpi_start(struct ifnet *); 201static void wpi_start_task(void *, int); 202static void wpi_watchdog_rfkill(void *); 203static void wpi_scan_timeout(void *); 204static void wpi_tx_timeout(void *); 205static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 206static int wpi_cmd(struct wpi_softc *, int, const void *, size_t, int); 207static int wpi_mrr_setup(struct wpi_softc *); 208static int wpi_add_node(struct wpi_softc *, struct ieee80211_node *); 209static int wpi_add_broadcast_node(struct wpi_softc *, int); 210static int wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *); 211static void wpi_del_node(struct wpi_softc *, struct ieee80211_node *); 212static int wpi_updateedca(struct ieee80211com *); 213static void wpi_set_promisc(struct wpi_softc *); 214static void wpi_update_promisc(struct ifnet *); 215static void wpi_update_mcast(struct ifnet *); 216static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 217static int wpi_set_timing(struct wpi_softc *, struct ieee80211_node *); 218static void wpi_power_calibration(struct wpi_softc *); 219static int wpi_set_txpower(struct wpi_softc *, int); 220static int wpi_get_power_index(struct wpi_softc *, 221 struct wpi_power_group *, uint8_t, int, int); 222static int wpi_set_pslevel(struct wpi_softc *, uint8_t, int, int); 223static int wpi_send_btcoex(struct wpi_softc *); 224static int wpi_send_rxon(struct wpi_softc *, int, int); 225static int wpi_config(struct wpi_softc *); 226static uint16_t wpi_get_active_dwell_time(struct wpi_softc *, 227 struct ieee80211_channel *, uint8_t); 228static uint16_t wpi_limit_dwell(struct wpi_softc *, uint16_t); 229static uint16_t wpi_get_passive_dwell_time(struct wpi_softc *, 230 struct ieee80211_channel *); 231static uint32_t wpi_get_scan_pause_time(uint32_t, uint16_t); 232static int wpi_scan(struct wpi_softc *, struct ieee80211_channel *); 233static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 234static int wpi_config_beacon(struct wpi_vap *); 235static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 236static void wpi_update_beacon(struct ieee80211vap *, int); 237static void wpi_newassoc(struct ieee80211_node *, int); 238static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 239static int wpi_load_key(struct ieee80211_node *, 240 const struct ieee80211_key *); 241static void wpi_load_key_cb(void *, struct ieee80211_node *); 242static int wpi_set_global_keys(struct ieee80211_node *); 243static int wpi_del_key(struct ieee80211_node *, 244 const struct ieee80211_key *); 245static void wpi_del_key_cb(void *, struct ieee80211_node *); 246static int wpi_process_key(struct ieee80211vap *, 247 const struct ieee80211_key *, int); 248static int wpi_key_set(struct ieee80211vap *, 249 const struct ieee80211_key *, 250 const uint8_t mac[IEEE80211_ADDR_LEN]); 251static int wpi_key_delete(struct ieee80211vap *, 252 const struct ieee80211_key *); 253static int wpi_post_alive(struct wpi_softc *); 254static int wpi_load_bootcode(struct wpi_softc *, const uint8_t *, int); 255static int wpi_load_firmware(struct wpi_softc *); 256static int wpi_read_firmware(struct wpi_softc *); 257static void wpi_unload_firmware(struct wpi_softc *); 258static int wpi_clock_wait(struct wpi_softc *); 259static int wpi_apm_init(struct wpi_softc *); 260static void wpi_apm_stop_master(struct wpi_softc *); 261static void wpi_apm_stop(struct wpi_softc *); 262static void wpi_nic_config(struct wpi_softc *); 263static int wpi_hw_init(struct wpi_softc *); 264static void wpi_hw_stop(struct wpi_softc *); 265static void wpi_radio_on(void *, int); 266static void wpi_radio_off(void *, int); 267static void wpi_init(void *); 268static void wpi_stop_locked(struct wpi_softc *); 269static void wpi_stop(struct wpi_softc *); 270static void wpi_scan_start(struct ieee80211com *); 271static void wpi_scan_end(struct ieee80211com *); 272static void wpi_set_channel(struct ieee80211com *); 273static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 274static void wpi_scan_mindwell(struct ieee80211_scan_state *); 275static void wpi_hw_reset(void *, int); 276 277static device_method_t wpi_methods[] = { 278 /* Device interface */ 279 DEVMETHOD(device_probe, wpi_probe), 280 DEVMETHOD(device_attach, wpi_attach), 281 DEVMETHOD(device_detach, wpi_detach), 282 DEVMETHOD(device_shutdown, wpi_shutdown), 283 DEVMETHOD(device_suspend, wpi_suspend), 284 DEVMETHOD(device_resume, wpi_resume), 285 286 DEVMETHOD_END 287}; 288 289static driver_t wpi_driver = { 290 "wpi", 291 wpi_methods, 292 sizeof (struct wpi_softc) 293}; 294static devclass_t wpi_devclass; 295 296DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 297 298MODULE_VERSION(wpi, 1); 299 300MODULE_DEPEND(wpi, pci, 1, 1, 1); 301MODULE_DEPEND(wpi, wlan, 1, 1, 1); 302MODULE_DEPEND(wpi, firmware, 1, 1, 1); 303 304static int 305wpi_probe(device_t dev) 306{ 307 const struct wpi_ident *ident; 308 309 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 310 if (pci_get_vendor(dev) == ident->vendor && 311 pci_get_device(dev) == ident->device) { 312 device_set_desc(dev, ident->name); 313 return (BUS_PROBE_DEFAULT); 314 } 315 } 316 return ENXIO; 317} 318 319static int 320wpi_attach(device_t dev) 321{ 322 struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev); 323 struct ieee80211com *ic; 324 struct ifnet *ifp; 325 int i, error, rid; 326#ifdef WPI_DEBUG 327 int supportsa = 1; 328 const struct wpi_ident *ident; 329#endif 330 uint8_t macaddr[IEEE80211_ADDR_LEN]; 331 332 sc->sc_dev = dev; 333 334#ifdef WPI_DEBUG 335 error = resource_int_value(device_get_name(sc->sc_dev), 336 device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug)); 337 if (error != 0) 338 sc->sc_debug = 0; 339#else 340 sc->sc_debug = 0; 341#endif 342 343 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 344 345 /* 346 * Get the offset of the PCI Express Capability Structure in PCI 347 * Configuration Space. 348 */ 349 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 350 if (error != 0) { 351 device_printf(dev, "PCIe capability structure not found!\n"); 352 return error; 353 } 354 355 /* 356 * Some card's only support 802.11b/g not a, check to see if 357 * this is one such card. A 0x0 in the subdevice table indicates 358 * the entire subdevice range is to be ignored. 359 */ 360#ifdef WPI_DEBUG 361 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 362 if (ident->subdevice && 363 pci_get_subdevice(dev) == ident->subdevice) { 364 supportsa = 0; 365 break; 366 } 367 } 368#endif 369 370 /* Clear device-specific "PCI retry timeout" register (41h). */ 371 pci_write_config(dev, 0x41, 0, 1); 372 373 /* Enable bus-mastering. */ 374 pci_enable_busmaster(dev); 375 376 rid = PCIR_BAR(0); 377 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 378 RF_ACTIVE); 379 if (sc->mem == NULL) { 380 device_printf(dev, "can't map mem space\n"); 381 return ENOMEM; 382 } 383 sc->sc_st = rman_get_bustag(sc->mem); 384 sc->sc_sh = rman_get_bushandle(sc->mem); 385 386 i = 1; 387 rid = 0; 388 if (pci_alloc_msi(dev, &i) == 0) 389 rid = 1; 390 /* Install interrupt handler. */ 391 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 392 (rid != 0 ? 0 : RF_SHAREABLE)); 393 if (sc->irq == NULL) { 394 device_printf(dev, "can't map interrupt\n"); 395 error = ENOMEM; 396 goto fail; 397 } 398 399 WPI_LOCK_INIT(sc); 400 WPI_TX_LOCK_INIT(sc); 401 WPI_RXON_LOCK_INIT(sc); 402 WPI_NT_LOCK_INIT(sc); 403 WPI_TXQ_LOCK_INIT(sc); 404 WPI_TXQ_STATE_LOCK_INIT(sc); 405 406 /* Allocate DMA memory for firmware transfers. */ 407 if ((error = wpi_alloc_fwmem(sc)) != 0) { 408 device_printf(dev, 409 "could not allocate memory for firmware, error %d\n", 410 error); 411 goto fail; 412 } 413 414 /* Allocate shared page. */ 415 if ((error = wpi_alloc_shared(sc)) != 0) { 416 device_printf(dev, "could not allocate shared page\n"); 417 goto fail; 418 } 419 420 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 421 for (i = 0; i < WPI_NTXQUEUES; i++) { 422 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 423 device_printf(dev, 424 "could not allocate TX ring %d, error %d\n", i, 425 error); 426 goto fail; 427 } 428 } 429 430 /* Allocate RX ring. */ 431 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 432 device_printf(dev, "could not allocate RX ring, error %d\n", 433 error); 434 goto fail; 435 } 436 437 /* Clear pending interrupts. */ 438 WPI_WRITE(sc, WPI_INT, 0xffffffff); 439 440 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 441 if (ifp == NULL) { 442 device_printf(dev, "can not allocate ifnet structure\n"); 443 goto fail; 444 } 445 446 ic = ifp->if_l2com; 447 ic->ic_ifp = ifp; 448 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 449 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 450 451 /* Set device capabilities. */ 452 ic->ic_caps = 453 IEEE80211_C_STA /* station mode supported */ 454 | IEEE80211_C_IBSS /* IBSS mode supported */ 455 | IEEE80211_C_HOSTAP /* Host access point mode */ 456 | IEEE80211_C_MONITOR /* monitor mode supported */ 457 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 458 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 459 | IEEE80211_C_TXPMGT /* tx power management */ 460 | IEEE80211_C_SHSLOT /* short slot time supported */ 461 | IEEE80211_C_WPA /* 802.11i */ 462 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 463 | IEEE80211_C_WME /* 802.11e */ 464 | IEEE80211_C_PMGT /* Station-side power mgmt */ 465 ; 466 467 ic->ic_cryptocaps = 468 IEEE80211_CRYPTO_AES_CCM; 469 470 /* 471 * Read in the eeprom and also setup the channels for 472 * net80211. We don't set the rates as net80211 does this for us 473 */ 474 if ((error = wpi_read_eeprom(sc, macaddr)) != 0) { 475 device_printf(dev, "could not read EEPROM, error %d\n", 476 error); 477 goto fail; 478 } 479 480#ifdef WPI_DEBUG 481 if (bootverbose) { 482 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", 483 sc->domain); 484 device_printf(sc->sc_dev, "Hardware Type: %c\n", 485 sc->type > 1 ? 'B': '?'); 486 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 487 ((sc->rev & 0xf0) == 0xd0) ? 'D': '?'); 488 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 489 supportsa ? "does" : "does not"); 490 491 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must 492 check what sc->rev really represents - benjsc 20070615 */ 493 } 494#endif 495 496 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 497 ifp->if_softc = sc; 498 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 499 ifp->if_init = wpi_init; 500 ifp->if_ioctl = wpi_ioctl; 501 ifp->if_start = wpi_start; 502 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 503 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 504 IFQ_SET_READY(&ifp->if_snd); 505 506 ieee80211_ifattach(ic, macaddr); 507 ic->ic_vap_create = wpi_vap_create; 508 ic->ic_vap_delete = wpi_vap_delete; 509 ic->ic_raw_xmit = wpi_raw_xmit; 510 ic->ic_node_alloc = wpi_node_alloc; 511 sc->sc_node_free = ic->ic_node_free; 512 ic->ic_node_free = wpi_node_free; 513 ic->ic_wme.wme_update = wpi_updateedca; 514 ic->ic_update_promisc = wpi_update_promisc; 515 ic->ic_update_mcast = wpi_update_mcast; 516 ic->ic_newassoc = wpi_newassoc; 517 ic->ic_scan_start = wpi_scan_start; 518 ic->ic_scan_end = wpi_scan_end; 519 ic->ic_set_channel = wpi_set_channel; 520 ic->ic_scan_curchan = wpi_scan_curchan; 521 ic->ic_scan_mindwell = wpi_scan_mindwell; 522 ic->ic_setregdomain = wpi_setregdomain; 523 524 wpi_radiotap_attach(sc); 525 526 callout_init_mtx(&sc->calib_to, &sc->rxon_mtx, 0); 527 callout_init_mtx(&sc->scan_timeout, &sc->rxon_mtx, 0); 528 callout_init_mtx(&sc->tx_timeout, &sc->txq_state_mtx, 0); 529 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 530 TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc); 531 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 532 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 533 TASK_INIT(&sc->sc_start_task, 0, wpi_start_task, sc); 534 535 sc->sc_tq = taskqueue_create("wpi_taskq", M_WAITOK, 536 taskqueue_thread_enqueue, &sc->sc_tq); 537 error = taskqueue_start_threads(&sc->sc_tq, 1, 0, "wpi_taskq"); 538 if (error != 0) { 539 device_printf(dev, "can't start threads, error %d\n", error); 540 goto fail; 541 } 542 543 wpi_sysctlattach(sc); 544 545 /* 546 * Hook our interrupt after all initialization is complete. 547 */ 548 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 549 NULL, wpi_intr, sc, &sc->sc_ih); 550 if (error != 0) { 551 device_printf(dev, "can't establish interrupt, error %d\n", 552 error); 553 goto fail; 554 } 555 556 if (bootverbose) 557 ieee80211_announce(ic); 558 559#ifdef WPI_DEBUG 560 if (sc->sc_debug & WPI_DEBUG_HW) 561 ieee80211_announce_channels(ic); 562#endif 563 564 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 565 return 0; 566 567fail: wpi_detach(dev); 568 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 569 return error; 570} 571 572/* 573 * Attach the interface to 802.11 radiotap. 574 */ 575static void 576wpi_radiotap_attach(struct wpi_softc *sc) 577{ 578 struct ifnet *ifp = sc->sc_ifp; 579 struct ieee80211com *ic = ifp->if_l2com; 580 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 581 ieee80211_radiotap_attach(ic, 582 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 583 WPI_TX_RADIOTAP_PRESENT, 584 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 585 WPI_RX_RADIOTAP_PRESENT); 586 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 587} 588 589static void 590wpi_sysctlattach(struct wpi_softc *sc) 591{ 592#ifdef WPI_DEBUG 593 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 594 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 595 596 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 597 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 598 "control debugging printfs"); 599#endif 600} 601 602static void 603wpi_init_beacon(struct wpi_vap *wvp) 604{ 605 struct wpi_buf *bcn = &wvp->wv_bcbuf; 606 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 607 608 cmd->id = WPI_ID_BROADCAST; 609 cmd->ofdm_mask = 0xff; 610 cmd->cck_mask = 0x0f; 611 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 612 613 /* 614 * XXX WPI_TX_AUTO_SEQ seems to be ignored - workaround this issue 615 * XXX by using WPI_TX_NEED_ACK instead (with some side effects). 616 */ 617 cmd->flags = htole32(WPI_TX_NEED_ACK | WPI_TX_INSERT_TSTAMP); 618 619 bcn->code = WPI_CMD_SET_BEACON; 620 bcn->ac = WPI_CMD_QUEUE_NUM; 621 bcn->size = sizeof(struct wpi_cmd_beacon); 622} 623 624static struct ieee80211vap * 625wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 626 enum ieee80211_opmode opmode, int flags, 627 const uint8_t bssid[IEEE80211_ADDR_LEN], 628 const uint8_t mac[IEEE80211_ADDR_LEN]) 629{ 630 struct wpi_vap *wvp; 631 struct ieee80211vap *vap; 632 633 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 634 return NULL; 635 636 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 637 M_80211_VAP, M_NOWAIT | M_ZERO); 638 if (wvp == NULL) 639 return NULL; 640 vap = &wvp->wv_vap; 641 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 642 643 if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) { 644 WPI_VAP_LOCK_INIT(wvp); 645 wpi_init_beacon(wvp); 646 } 647 648 /* Override with driver methods. */ 649 vap->iv_key_set = wpi_key_set; 650 vap->iv_key_delete = wpi_key_delete; 651 wvp->wv_newstate = vap->iv_newstate; 652 vap->iv_newstate = wpi_newstate; 653 vap->iv_update_beacon = wpi_update_beacon; 654 vap->iv_max_aid = WPI_ID_IBSS_MAX - WPI_ID_IBSS_MIN + 1; 655 656 ieee80211_ratectl_init(vap); 657 /* Complete setup. */ 658 ieee80211_vap_attach(vap, ieee80211_media_change, 659 ieee80211_media_status); 660 ic->ic_opmode = opmode; 661 return vap; 662} 663 664static void 665wpi_vap_delete(struct ieee80211vap *vap) 666{ 667 struct wpi_vap *wvp = WPI_VAP(vap); 668 struct wpi_buf *bcn = &wvp->wv_bcbuf; 669 enum ieee80211_opmode opmode = vap->iv_opmode; 670 671 ieee80211_ratectl_deinit(vap); 672 ieee80211_vap_detach(vap); 673 674 if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) { 675 if (bcn->m != NULL) 676 m_freem(bcn->m); 677 678 WPI_VAP_LOCK_DESTROY(wvp); 679 } 680 681 free(wvp, M_80211_VAP); 682} 683 684static int 685wpi_detach(device_t dev) 686{ 687 struct wpi_softc *sc = device_get_softc(dev); 688 struct ifnet *ifp = sc->sc_ifp; 689 struct ieee80211com *ic; 690 int qid; 691 692 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 693 694 if (ifp != NULL) { 695 ic = ifp->if_l2com; 696 697 ieee80211_draintask(ic, &sc->sc_radioon_task); 698 ieee80211_draintask(ic, &sc->sc_start_task); 699 700 wpi_stop(sc); 701 702 taskqueue_drain_all(sc->sc_tq); 703 taskqueue_free(sc->sc_tq); 704 705 callout_drain(&sc->watchdog_rfkill); 706 callout_drain(&sc->tx_timeout); 707 callout_drain(&sc->scan_timeout); 708 callout_drain(&sc->calib_to); 709 ieee80211_ifdetach(ic); 710 } 711 712 /* Uninstall interrupt handler. */ 713 if (sc->irq != NULL) { 714 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 715 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 716 sc->irq); 717 pci_release_msi(dev); 718 } 719 720 if (sc->txq[0].data_dmat) { 721 /* Free DMA resources. */ 722 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 723 wpi_free_tx_ring(sc, &sc->txq[qid]); 724 725 wpi_free_rx_ring(sc); 726 wpi_free_shared(sc); 727 } 728 729 if (sc->fw_dma.tag) 730 wpi_free_fwmem(sc); 731 732 if (sc->mem != NULL) 733 bus_release_resource(dev, SYS_RES_MEMORY, 734 rman_get_rid(sc->mem), sc->mem); 735 736 if (ifp != NULL) 737 if_free(ifp); 738 739 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 740 WPI_TXQ_STATE_LOCK_DESTROY(sc); 741 WPI_TXQ_LOCK_DESTROY(sc); 742 WPI_NT_LOCK_DESTROY(sc); 743 WPI_RXON_LOCK_DESTROY(sc); 744 WPI_TX_LOCK_DESTROY(sc); 745 WPI_LOCK_DESTROY(sc); 746 return 0; 747} 748 749static int 750wpi_shutdown(device_t dev) 751{ 752 struct wpi_softc *sc = device_get_softc(dev); 753 754 wpi_stop(sc); 755 return 0; 756} 757 758static int 759wpi_suspend(device_t dev) 760{ 761 struct wpi_softc *sc = device_get_softc(dev); 762 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 763 764 ieee80211_suspend_all(ic); 765 return 0; 766} 767 768static int 769wpi_resume(device_t dev) 770{ 771 struct wpi_softc *sc = device_get_softc(dev); 772 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 773 774 /* Clear device-specific "PCI retry timeout" register (41h). */ 775 pci_write_config(dev, 0x41, 0, 1); 776 777 ieee80211_resume_all(ic); 778 return 0; 779} 780 781/* 782 * Grab exclusive access to NIC memory. 783 */ 784static int 785wpi_nic_lock(struct wpi_softc *sc) 786{ 787 int ntries; 788 789 /* Request exclusive access to NIC. */ 790 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 791 792 /* Spin until we actually get the lock. */ 793 for (ntries = 0; ntries < 1000; ntries++) { 794 if ((WPI_READ(sc, WPI_GP_CNTRL) & 795 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 796 WPI_GP_CNTRL_MAC_ACCESS_ENA) 797 return 0; 798 DELAY(10); 799 } 800 801 device_printf(sc->sc_dev, "could not lock memory\n"); 802 803 return ETIMEDOUT; 804} 805 806/* 807 * Release lock on NIC memory. 808 */ 809static __inline void 810wpi_nic_unlock(struct wpi_softc *sc) 811{ 812 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 813} 814 815static __inline uint32_t 816wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 817{ 818 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 819 WPI_BARRIER_READ_WRITE(sc); 820 return WPI_READ(sc, WPI_PRPH_RDATA); 821} 822 823static __inline void 824wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 825{ 826 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 827 WPI_BARRIER_WRITE(sc); 828 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 829} 830 831static __inline void 832wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 833{ 834 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 835} 836 837static __inline void 838wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 839{ 840 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 841} 842 843static __inline void 844wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 845 const uint32_t *data, int count) 846{ 847 for (; count > 0; count--, data++, addr += 4) 848 wpi_prph_write(sc, addr, *data); 849} 850 851static __inline uint32_t 852wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 853{ 854 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 855 WPI_BARRIER_READ_WRITE(sc); 856 return WPI_READ(sc, WPI_MEM_RDATA); 857} 858 859static __inline void 860wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 861 int count) 862{ 863 for (; count > 0; count--, addr += 4) 864 *data++ = wpi_mem_read(sc, addr); 865} 866 867static int 868wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 869{ 870 uint8_t *out = data; 871 uint32_t val; 872 int error, ntries; 873 874 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 875 876 if ((error = wpi_nic_lock(sc)) != 0) 877 return error; 878 879 for (; count > 0; count -= 2, addr++) { 880 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 881 for (ntries = 0; ntries < 10; ntries++) { 882 val = WPI_READ(sc, WPI_EEPROM); 883 if (val & WPI_EEPROM_READ_VALID) 884 break; 885 DELAY(5); 886 } 887 if (ntries == 10) { 888 device_printf(sc->sc_dev, 889 "timeout reading ROM at 0x%x\n", addr); 890 return ETIMEDOUT; 891 } 892 *out++= val >> 16; 893 if (count > 1) 894 *out ++= val >> 24; 895 } 896 897 wpi_nic_unlock(sc); 898 899 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 900 901 return 0; 902} 903 904static void 905wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 906{ 907 if (error != 0) 908 return; 909 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 910 *(bus_addr_t *)arg = segs[0].ds_addr; 911} 912 913/* 914 * Allocates a contiguous block of dma memory of the requested size and 915 * alignment. 916 */ 917static int 918wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 919 void **kvap, bus_size_t size, bus_size_t alignment) 920{ 921 int error; 922 923 dma->tag = NULL; 924 dma->size = size; 925 926 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 927 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 928 1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag); 929 if (error != 0) 930 goto fail; 931 932 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 933 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 934 if (error != 0) 935 goto fail; 936 937 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 938 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 939 if (error != 0) 940 goto fail; 941 942 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 943 944 if (kvap != NULL) 945 *kvap = dma->vaddr; 946 947 return 0; 948 949fail: wpi_dma_contig_free(dma); 950 return error; 951} 952 953static void 954wpi_dma_contig_free(struct wpi_dma_info *dma) 955{ 956 if (dma->vaddr != NULL) { 957 bus_dmamap_sync(dma->tag, dma->map, 958 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 959 bus_dmamap_unload(dma->tag, dma->map); 960 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 961 dma->vaddr = NULL; 962 } 963 if (dma->tag != NULL) { 964 bus_dma_tag_destroy(dma->tag); 965 dma->tag = NULL; 966 } 967} 968 969/* 970 * Allocate a shared page between host and NIC. 971 */ 972static int 973wpi_alloc_shared(struct wpi_softc *sc) 974{ 975 /* Shared buffer must be aligned on a 4KB boundary. */ 976 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 977 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 978} 979 980static void 981wpi_free_shared(struct wpi_softc *sc) 982{ 983 wpi_dma_contig_free(&sc->shared_dma); 984} 985 986/* 987 * Allocate DMA-safe memory for firmware transfer. 988 */ 989static int 990wpi_alloc_fwmem(struct wpi_softc *sc) 991{ 992 /* Must be aligned on a 16-byte boundary. */ 993 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 994 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 995} 996 997static void 998wpi_free_fwmem(struct wpi_softc *sc) 999{ 1000 wpi_dma_contig_free(&sc->fw_dma); 1001} 1002 1003static int 1004wpi_alloc_rx_ring(struct wpi_softc *sc) 1005{ 1006 struct wpi_rx_ring *ring = &sc->rxq; 1007 bus_size_t size; 1008 int i, error; 1009 1010 ring->cur = 0; 1011 ring->update = 0; 1012 1013 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1014 1015 /* Allocate RX descriptors (16KB aligned.) */ 1016 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 1017 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1018 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 1019 if (error != 0) { 1020 device_printf(sc->sc_dev, 1021 "%s: could not allocate RX ring DMA memory, error %d\n", 1022 __func__, error); 1023 goto fail; 1024 } 1025 1026 /* Create RX buffer DMA tag. */ 1027 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1028 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1029 MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, 1030 &ring->data_dmat); 1031 if (error != 0) { 1032 device_printf(sc->sc_dev, 1033 "%s: could not create RX buf DMA tag, error %d\n", 1034 __func__, error); 1035 goto fail; 1036 } 1037 1038 /* 1039 * Allocate and map RX buffers. 1040 */ 1041 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1042 struct wpi_rx_data *data = &ring->data[i]; 1043 bus_addr_t paddr; 1044 1045 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1046 if (error != 0) { 1047 device_printf(sc->sc_dev, 1048 "%s: could not create RX buf DMA map, error %d\n", 1049 __func__, error); 1050 goto fail; 1051 } 1052 1053 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1054 if (data->m == NULL) { 1055 device_printf(sc->sc_dev, 1056 "%s: could not allocate RX mbuf\n", __func__); 1057 error = ENOBUFS; 1058 goto fail; 1059 } 1060 1061 error = bus_dmamap_load(ring->data_dmat, data->map, 1062 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1063 &paddr, BUS_DMA_NOWAIT); 1064 if (error != 0 && error != EFBIG) { 1065 device_printf(sc->sc_dev, 1066 "%s: can't map mbuf (error %d)\n", __func__, 1067 error); 1068 goto fail; 1069 } 1070 1071 /* Set physical address of RX buffer. */ 1072 ring->desc[i] = htole32(paddr); 1073 } 1074 1075 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1076 BUS_DMASYNC_PREWRITE); 1077 1078 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1079 1080 return 0; 1081 1082fail: wpi_free_rx_ring(sc); 1083 1084 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1085 1086 return error; 1087} 1088 1089static void 1090wpi_update_rx_ring(struct wpi_softc *sc) 1091{ 1092 struct wpi_rx_ring *ring = &sc->rxq; 1093 1094 if (ring->update != 0) { 1095 /* Wait for INT_WAKEUP event. */ 1096 return; 1097 } 1098 1099 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1100 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1101 __func__); 1102 1103 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1104 ring->update = 1; 1105 } else 1106 WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7); 1107} 1108 1109static void 1110wpi_reset_rx_ring(struct wpi_softc *sc) 1111{ 1112 struct wpi_rx_ring *ring = &sc->rxq; 1113 int ntries; 1114 1115 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1116 1117 if (wpi_nic_lock(sc) == 0) { 1118 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1119 for (ntries = 0; ntries < 1000; ntries++) { 1120 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1121 WPI_FH_RX_STATUS_IDLE) 1122 break; 1123 DELAY(10); 1124 } 1125 wpi_nic_unlock(sc); 1126 } 1127 1128 ring->cur = 0; 1129 ring->update = 0; 1130} 1131 1132static void 1133wpi_free_rx_ring(struct wpi_softc *sc) 1134{ 1135 struct wpi_rx_ring *ring = &sc->rxq; 1136 int i; 1137 1138 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1139 1140 wpi_dma_contig_free(&ring->desc_dma); 1141 1142 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1143 struct wpi_rx_data *data = &ring->data[i]; 1144 1145 if (data->m != NULL) { 1146 bus_dmamap_sync(ring->data_dmat, data->map, 1147 BUS_DMASYNC_POSTREAD); 1148 bus_dmamap_unload(ring->data_dmat, data->map); 1149 m_freem(data->m); 1150 data->m = NULL; 1151 } 1152 if (data->map != NULL) 1153 bus_dmamap_destroy(ring->data_dmat, data->map); 1154 } 1155 if (ring->data_dmat != NULL) { 1156 bus_dma_tag_destroy(ring->data_dmat); 1157 ring->data_dmat = NULL; 1158 } 1159} 1160 1161static int 1162wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid) 1163{ 1164 bus_addr_t paddr; 1165 bus_size_t size; 1166 int i, error; 1167 1168 ring->qid = qid; 1169 ring->queued = 0; 1170 ring->cur = 0; 1171 ring->update = 0; 1172 1173 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1174 1175 /* Allocate TX descriptors (16KB aligned.) */ 1176 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1177 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1178 size, WPI_RING_DMA_ALIGN); 1179 if (error != 0) { 1180 device_printf(sc->sc_dev, 1181 "%s: could not allocate TX ring DMA memory, error %d\n", 1182 __func__, error); 1183 goto fail; 1184 } 1185 1186 /* Update shared area with ring physical address. */ 1187 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1188 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1189 BUS_DMASYNC_PREWRITE); 1190 1191 /* 1192 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need 1193 * to allocate commands space for other rings. 1194 * XXX Do we really need to allocate descriptors for other rings? 1195 */ 1196 if (qid > WPI_CMD_QUEUE_NUM) { 1197 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1198 return 0; 1199 } 1200 1201 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1202 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1203 size, 4); 1204 if (error != 0) { 1205 device_printf(sc->sc_dev, 1206 "%s: could not allocate TX cmd DMA memory, error %d\n", 1207 __func__, error); 1208 goto fail; 1209 } 1210 1211 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1212 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1213 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1214 &ring->data_dmat); 1215 if (error != 0) { 1216 device_printf(sc->sc_dev, 1217 "%s: could not create TX buf DMA tag, error %d\n", 1218 __func__, error); 1219 goto fail; 1220 } 1221 1222 paddr = ring->cmd_dma.paddr; 1223 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1224 struct wpi_tx_data *data = &ring->data[i]; 1225 1226 data->cmd_paddr = paddr; 1227 paddr += sizeof (struct wpi_tx_cmd); 1228 1229 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1230 if (error != 0) { 1231 device_printf(sc->sc_dev, 1232 "%s: could not create TX buf DMA map, error %d\n", 1233 __func__, error); 1234 goto fail; 1235 } 1236 } 1237 1238 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1239 1240 return 0; 1241 1242fail: wpi_free_tx_ring(sc, ring); 1243 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1244 return error; 1245} 1246 1247static void 1248wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1249{ 1250 if (ring->update != 0) { 1251 /* Wait for INT_WAKEUP event. */ 1252 return; 1253 } 1254 1255 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1256 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1257 __func__, ring->qid); 1258 1259 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1260 ring->update = 1; 1261 } else 1262 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1263} 1264 1265static void 1266wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1267{ 1268 int i; 1269 1270 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1271 1272 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1273 struct wpi_tx_data *data = &ring->data[i]; 1274 1275 if (data->m != NULL) { 1276 bus_dmamap_sync(ring->data_dmat, data->map, 1277 BUS_DMASYNC_POSTWRITE); 1278 bus_dmamap_unload(ring->data_dmat, data->map); 1279 m_freem(data->m); 1280 data->m = NULL; 1281 } 1282 if (data->ni != NULL) { 1283 ieee80211_free_node(data->ni); 1284 data->ni = NULL; 1285 } 1286 } 1287 /* Clear TX descriptors. */ 1288 memset(ring->desc, 0, ring->desc_dma.size); 1289 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1290 BUS_DMASYNC_PREWRITE); 1291 sc->qfullmsk &= ~(1 << ring->qid); 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 ifnet *ifp = sc->sc_ifp; 1422 struct ieee80211com *ic = ifp->if_l2com; 1423 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1424 const struct wpi_chan_band *band = &wpi_bands[n]; 1425 struct ieee80211_channel *c; 1426 uint8_t chan; 1427 int i, nflags; 1428 1429 for (i = 0; i < band->nchan; i++) { 1430 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1431 DPRINTF(sc, WPI_DEBUG_EEPROM, 1432 "Channel Not Valid: %d, band %d\n", 1433 band->chan[i],n); 1434 continue; 1435 } 1436 1437 chan = band->chan[i]; 1438 nflags = wpi_eeprom_channel_flags(&channels[i]); 1439 1440 c = &ic->ic_channels[ic->ic_nchans++]; 1441 c->ic_ieee = chan; 1442 c->ic_maxregpower = channels[i].maxpwr; 1443 c->ic_maxpower = 2*c->ic_maxregpower; 1444 1445 if (n == 0) { /* 2GHz band */ 1446 c->ic_freq = ieee80211_ieee2mhz(chan, 1447 IEEE80211_CHAN_G); 1448 1449 /* G =>'s B is supported */ 1450 c->ic_flags = IEEE80211_CHAN_B | nflags; 1451 c = &ic->ic_channels[ic->ic_nchans++]; 1452 c[0] = c[-1]; 1453 c->ic_flags = IEEE80211_CHAN_G | nflags; 1454 } else { /* 5GHz band */ 1455 c->ic_freq = ieee80211_ieee2mhz(chan, 1456 IEEE80211_CHAN_A); 1457 1458 c->ic_flags = IEEE80211_CHAN_A | nflags; 1459 } 1460 1461 /* Save maximum allowed TX power for this channel. */ 1462 sc->maxpwr[chan] = channels[i].maxpwr; 1463 1464 DPRINTF(sc, WPI_DEBUG_EEPROM, 1465 "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d," 1466 " offset %d\n", chan, c->ic_freq, 1467 channels[i].flags, sc->maxpwr[chan], 1468 IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans); 1469 } 1470} 1471 1472/** 1473 * Read the eeprom to find out what channels are valid for the given 1474 * band and update net80211 with what we find. 1475 */ 1476static int 1477wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 1478{ 1479 struct ifnet *ifp = sc->sc_ifp; 1480 struct ieee80211com *ic = ifp->if_l2com; 1481 const struct wpi_chan_band *band = &wpi_bands[n]; 1482 int error; 1483 1484 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1485 1486 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1487 band->nchan * sizeof (struct wpi_eeprom_chan)); 1488 if (error != 0) { 1489 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1490 return error; 1491 } 1492 1493 wpi_read_eeprom_band(sc, n); 1494 1495 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1496 1497 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1498 1499 return 0; 1500} 1501 1502static struct wpi_eeprom_chan * 1503wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1504{ 1505 int i, j; 1506 1507 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1508 for (i = 0; i < wpi_bands[j].nchan; i++) 1509 if (wpi_bands[j].chan[i] == c->ic_ieee) 1510 return &sc->eeprom_channels[j][i]; 1511 1512 return NULL; 1513} 1514 1515/* 1516 * Enforce flags read from EEPROM. 1517 */ 1518static int 1519wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1520 int nchan, struct ieee80211_channel chans[]) 1521{ 1522 struct ifnet *ifp = ic->ic_ifp; 1523 struct wpi_softc *sc = ifp->if_softc; 1524 int i; 1525 1526 for (i = 0; i < nchan; i++) { 1527 struct ieee80211_channel *c = &chans[i]; 1528 struct wpi_eeprom_chan *channel; 1529 1530 channel = wpi_find_eeprom_channel(sc, c); 1531 if (channel == NULL) { 1532 if_printf(ic->ic_ifp, 1533 "%s: invalid channel %u freq %u/0x%x\n", 1534 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1535 return EINVAL; 1536 } 1537 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1538 } 1539 1540 return 0; 1541} 1542 1543static int 1544wpi_read_eeprom_group(struct wpi_softc *sc, int n) 1545{ 1546 struct wpi_power_group *group = &sc->groups[n]; 1547 struct wpi_eeprom_group rgroup; 1548 int i, error; 1549 1550 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1551 1552 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1553 &rgroup, sizeof rgroup)) != 0) { 1554 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1555 return error; 1556 } 1557 1558 /* Save TX power group information. */ 1559 group->chan = rgroup.chan; 1560 group->maxpwr = rgroup.maxpwr; 1561 /* Retrieve temperature at which the samples were taken. */ 1562 group->temp = (int16_t)le16toh(rgroup.temp); 1563 1564 DPRINTF(sc, WPI_DEBUG_EEPROM, 1565 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1566 group->maxpwr, group->temp); 1567 1568 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1569 group->samples[i].index = rgroup.samples[i].index; 1570 group->samples[i].power = rgroup.samples[i].power; 1571 1572 DPRINTF(sc, WPI_DEBUG_EEPROM, 1573 "\tsample %d: index=%d power=%d\n", i, 1574 group->samples[i].index, group->samples[i].power); 1575 } 1576 1577 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1578 1579 return 0; 1580} 1581 1582static int 1583wpi_add_node_entry_adhoc(struct wpi_softc *sc) 1584{ 1585 int newid = WPI_ID_IBSS_MIN; 1586 1587 for (; newid <= WPI_ID_IBSS_MAX; newid++) { 1588 if ((sc->nodesmsk & (1 << newid)) == 0) { 1589 sc->nodesmsk |= 1 << newid; 1590 return newid; 1591 } 1592 } 1593 1594 return WPI_ID_UNDEFINED; 1595} 1596 1597static __inline int 1598wpi_add_node_entry_sta(struct wpi_softc *sc) 1599{ 1600 sc->nodesmsk |= 1 << WPI_ID_BSS; 1601 1602 return WPI_ID_BSS; 1603} 1604 1605static __inline int 1606wpi_check_node_entry(struct wpi_softc *sc, uint8_t id) 1607{ 1608 if (id == WPI_ID_UNDEFINED) 1609 return 0; 1610 1611 return (sc->nodesmsk >> id) & 1; 1612} 1613 1614static __inline void 1615wpi_clear_node_table(struct wpi_softc *sc) 1616{ 1617 sc->nodesmsk = 0; 1618} 1619 1620static __inline void 1621wpi_del_node_entry(struct wpi_softc *sc, uint8_t id) 1622{ 1623 sc->nodesmsk &= ~(1 << id); 1624} 1625 1626static struct ieee80211_node * 1627wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1628{ 1629 struct wpi_node *wn; 1630 1631 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1632 M_NOWAIT | M_ZERO); 1633 1634 if (wn == NULL) 1635 return NULL; 1636 1637 wn->id = WPI_ID_UNDEFINED; 1638 1639 return &wn->ni; 1640} 1641 1642static void 1643wpi_node_free(struct ieee80211_node *ni) 1644{ 1645 struct ieee80211com *ic = ni->ni_ic; 1646 struct wpi_softc *sc = ic->ic_ifp->if_softc; 1647 struct wpi_node *wn = WPI_NODE(ni); 1648 1649 if (wn->id != WPI_ID_UNDEFINED) { 1650 WPI_NT_LOCK(sc); 1651 if (wpi_check_node_entry(sc, wn->id)) { 1652 wpi_del_node_entry(sc, wn->id); 1653 wpi_del_node(sc, ni); 1654 } 1655 WPI_NT_UNLOCK(sc); 1656 } 1657 1658 sc->sc_node_free(ni); 1659} 1660 1661static __inline int 1662wpi_check_bss_filter(struct wpi_softc *sc) 1663{ 1664 return (sc->rxon.filter & htole32(WPI_FILTER_BSS)) != 0; 1665} 1666 1667/** 1668 * Called by net80211 when ever there is a change to 80211 state machine 1669 */ 1670static int 1671wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1672{ 1673 struct wpi_vap *wvp = WPI_VAP(vap); 1674 struct ieee80211com *ic = vap->iv_ic; 1675 struct ifnet *ifp = ic->ic_ifp; 1676 struct wpi_softc *sc = ifp->if_softc; 1677 int error = 0; 1678 1679 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1680 1681 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1682 ieee80211_state_name[vap->iv_state], 1683 ieee80211_state_name[nstate]); 1684 1685 if (vap->iv_state == IEEE80211_S_RUN && nstate < IEEE80211_S_RUN) { 1686 if ((error = wpi_set_pslevel(sc, 0, 0, 1)) != 0) { 1687 device_printf(sc->sc_dev, 1688 "%s: could not set power saving level\n", 1689 __func__); 1690 return error; 1691 } 1692 1693 wpi_set_led(sc, WPI_LED_LINK, 1, 0); 1694 } 1695 1696 switch (nstate) { 1697 case IEEE80211_S_SCAN: 1698 WPI_RXON_LOCK(sc); 1699 if (wpi_check_bss_filter(sc) != 0) { 1700 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1701 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1702 device_printf(sc->sc_dev, 1703 "%s: could not send RXON\n", __func__); 1704 } 1705 } 1706 WPI_RXON_UNLOCK(sc); 1707 break; 1708 1709 case IEEE80211_S_ASSOC: 1710 if (vap->iv_state != IEEE80211_S_RUN) 1711 break; 1712 /* FALLTHROUGH */ 1713 case IEEE80211_S_AUTH: 1714 /* 1715 * NB: do not optimize AUTH -> AUTH state transmission - 1716 * this will break powersave with non-QoS AP! 1717 */ 1718 1719 /* 1720 * The node must be registered in the firmware before auth. 1721 * Also the associd must be cleared on RUN -> ASSOC 1722 * transitions. 1723 */ 1724 if ((error = wpi_auth(sc, vap)) != 0) { 1725 device_printf(sc->sc_dev, 1726 "%s: could not move to AUTH state, error %d\n", 1727 __func__, error); 1728 } 1729 break; 1730 1731 case IEEE80211_S_RUN: 1732 /* 1733 * RUN -> RUN transition; Just restart the timers. 1734 */ 1735 if (vap->iv_state == IEEE80211_S_RUN) { 1736 WPI_RXON_LOCK(sc); 1737 wpi_calib_timeout(sc); 1738 WPI_RXON_UNLOCK(sc); 1739 break; 1740 } 1741 1742 /* 1743 * !RUN -> RUN requires setting the association id 1744 * which is done with a firmware cmd. We also defer 1745 * starting the timers until that work is done. 1746 */ 1747 if ((error = wpi_run(sc, vap)) != 0) { 1748 device_printf(sc->sc_dev, 1749 "%s: could not move to RUN state\n", __func__); 1750 } 1751 break; 1752 1753 default: 1754 break; 1755 } 1756 if (error != 0) { 1757 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1758 return error; 1759 } 1760 1761 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1762 1763 return wvp->wv_newstate(vap, nstate, arg); 1764} 1765 1766static void 1767wpi_calib_timeout(void *arg) 1768{ 1769 struct wpi_softc *sc = arg; 1770 1771 if (wpi_check_bss_filter(sc) == 0) 1772 return; 1773 1774 wpi_power_calibration(sc); 1775 1776 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1777} 1778 1779static __inline uint8_t 1780rate2plcp(const uint8_t rate) 1781{ 1782 switch (rate) { 1783 case 12: return 0xd; 1784 case 18: return 0xf; 1785 case 24: return 0x5; 1786 case 36: return 0x7; 1787 case 48: return 0x9; 1788 case 72: return 0xb; 1789 case 96: return 0x1; 1790 case 108: return 0x3; 1791 case 2: return 10; 1792 case 4: return 20; 1793 case 11: return 55; 1794 case 22: return 110; 1795 default: return 0; 1796 } 1797} 1798 1799static __inline uint8_t 1800plcp2rate(const uint8_t plcp) 1801{ 1802 switch (plcp) { 1803 case 0xd: return 12; 1804 case 0xf: return 18; 1805 case 0x5: return 24; 1806 case 0x7: return 36; 1807 case 0x9: return 48; 1808 case 0xb: return 72; 1809 case 0x1: return 96; 1810 case 0x3: return 108; 1811 case 10: return 2; 1812 case 20: return 4; 1813 case 55: return 11; 1814 case 110: return 22; 1815 default: return 0; 1816 } 1817} 1818 1819/* Quickly determine if a given rate is CCK or OFDM. */ 1820#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1821 1822static void 1823wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1824 struct wpi_rx_data *data) 1825{ 1826 struct ifnet *ifp = sc->sc_ifp; 1827 struct ieee80211com *ic = ifp->if_l2com; 1828 struct wpi_rx_ring *ring = &sc->rxq; 1829 struct wpi_rx_stat *stat; 1830 struct wpi_rx_head *head; 1831 struct wpi_rx_tail *tail; 1832 struct ieee80211_frame *wh; 1833 struct ieee80211_node *ni; 1834 struct mbuf *m, *m1; 1835 bus_addr_t paddr; 1836 uint32_t flags; 1837 uint16_t len; 1838 int error; 1839 1840 stat = (struct wpi_rx_stat *)(desc + 1); 1841 1842 if (stat->len > WPI_STAT_MAXLEN) { 1843 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1844 goto fail1; 1845 } 1846 1847 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1848 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1849 len = le16toh(head->len); 1850 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1851 flags = le32toh(tail->flags); 1852 1853 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1854 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1855 le32toh(desc->len), len, (int8_t)stat->rssi, 1856 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1857 1858 /* Discard frames with a bad FCS early. */ 1859 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1860 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1861 __func__, flags); 1862 goto fail1; 1863 } 1864 /* Discard frames that are too short. */ 1865 if (len < sizeof (*wh)) { 1866 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1867 __func__, len); 1868 goto fail1; 1869 } 1870 1871 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1872 if (m1 == NULL) { 1873 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1874 __func__); 1875 goto fail1; 1876 } 1877 bus_dmamap_unload(ring->data_dmat, data->map); 1878 1879 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1880 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1881 if (error != 0 && error != EFBIG) { 1882 device_printf(sc->sc_dev, 1883 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1884 m_freem(m1); 1885 1886 /* Try to reload the old mbuf. */ 1887 error = bus_dmamap_load(ring->data_dmat, data->map, 1888 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1889 &paddr, BUS_DMA_NOWAIT); 1890 if (error != 0 && error != EFBIG) { 1891 panic("%s: could not load old RX mbuf", __func__); 1892 } 1893 /* Physical address may have changed. */ 1894 ring->desc[ring->cur] = htole32(paddr); 1895 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1896 BUS_DMASYNC_PREWRITE); 1897 goto fail1; 1898 } 1899 1900 m = data->m; 1901 data->m = m1; 1902 /* Update RX descriptor. */ 1903 ring->desc[ring->cur] = htole32(paddr); 1904 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1905 BUS_DMASYNC_PREWRITE); 1906 1907 /* Finalize mbuf. */ 1908 m->m_pkthdr.rcvif = ifp; 1909 m->m_data = (caddr_t)(head + 1); 1910 m->m_pkthdr.len = m->m_len = len; 1911 1912 /* Grab a reference to the source node. */ 1913 wh = mtod(m, struct ieee80211_frame *); 1914 1915 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 1916 (flags & WPI_RX_CIPHER_MASK) == WPI_RX_CIPHER_CCMP) { 1917 /* Check whether decryption was successful or not. */ 1918 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 1919 DPRINTF(sc, WPI_DEBUG_RECV, 1920 "CCMP decryption failed 0x%x\n", flags); 1921 goto fail2; 1922 } 1923 m->m_flags |= M_WEP; 1924 } 1925 1926 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1927 1928 if (ieee80211_radiotap_active(ic)) { 1929 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1930 1931 tap->wr_flags = 0; 1932 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 1933 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1934 tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET); 1935 tap->wr_dbm_antnoise = WPI_RSSI_OFFSET; 1936 tap->wr_tsft = tail->tstamp; 1937 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1938 tap->wr_rate = plcp2rate(head->plcp); 1939 } 1940 1941 WPI_UNLOCK(sc); 1942 1943 /* Send the frame to the 802.11 layer. */ 1944 if (ni != NULL) { 1945 (void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET); 1946 /* Node is no longer needed. */ 1947 ieee80211_free_node(ni); 1948 } else 1949 (void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET); 1950 1951 WPI_LOCK(sc); 1952 1953 return; 1954 1955fail2: m_freem(m); 1956 1957fail1: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1958} 1959 1960static void 1961wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1962 struct wpi_rx_data *data) 1963{ 1964 /* Ignore */ 1965} 1966 1967static void 1968wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1969{ 1970 struct ifnet *ifp = sc->sc_ifp; 1971 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1972 struct wpi_tx_data *data = &ring->data[desc->idx]; 1973 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1974 struct mbuf *m; 1975 struct ieee80211_node *ni; 1976 struct ieee80211vap *vap; 1977 struct ieee80211com *ic; 1978 uint32_t status = le32toh(stat->status); 1979 int ackfailcnt = stat->ackfailcnt / WPI_NTRIES_DEFAULT; 1980 1981 KASSERT(data->ni != NULL, ("no node")); 1982 KASSERT(data->m != NULL, ("no mbuf")); 1983 1984 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1985 1986 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 1987 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 1988 "status %x\n", __func__, desc->qid, desc->idx, stat->ackfailcnt, 1989 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 1990 1991 /* Unmap and free mbuf. */ 1992 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1993 bus_dmamap_unload(ring->data_dmat, data->map); 1994 m = data->m, data->m = NULL; 1995 ni = data->ni, data->ni = NULL; 1996 vap = ni->ni_vap; 1997 ic = vap->iv_ic; 1998 1999 /* 2000 * Update rate control statistics for the node. 2001 */ 2002 if (status & WPI_TX_STATUS_FAIL) { 2003 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2004 ieee80211_ratectl_tx_complete(vap, ni, 2005 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 2006 } else { 2007 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 2008 ieee80211_ratectl_tx_complete(vap, ni, 2009 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 2010 } 2011 2012 ieee80211_tx_complete(ni, m, (status & WPI_TX_STATUS_FAIL) != 0); 2013 2014 WPI_TXQ_STATE_LOCK(sc); 2015 ring->queued -= 1; 2016 if (ring->queued > 0) { 2017 callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc); 2018 2019 if (sc->qfullmsk != 0 && 2020 ring->queued < WPI_TX_RING_LOMARK) { 2021 sc->qfullmsk &= ~(1 << ring->qid); 2022 IF_LOCK(&ifp->if_snd); 2023 if (sc->qfullmsk == 0 && 2024 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 2025 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2026 IF_UNLOCK(&ifp->if_snd); 2027 ieee80211_runtask(ic, &sc->sc_start_task); 2028 } else 2029 IF_UNLOCK(&ifp->if_snd); 2030 } 2031 } else 2032 callout_stop(&sc->tx_timeout); 2033 WPI_TXQ_STATE_UNLOCK(sc); 2034 2035 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2036} 2037 2038/* 2039 * Process a "command done" firmware notification. This is where we wakeup 2040 * processes waiting for a synchronous command completion. 2041 */ 2042static void 2043wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 2044{ 2045 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 2046 struct wpi_tx_data *data; 2047 2048 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid %x idx %d flags %x " 2049 "type %s len %d\n", desc->qid, desc->idx, 2050 desc->flags, wpi_cmd_str(desc->type), 2051 le32toh(desc->len)); 2052 2053 if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM) 2054 return; /* Not a command ack. */ 2055 2056 KASSERT(ring->queued == 0, ("ring->queued must be 0")); 2057 2058 data = &ring->data[desc->idx]; 2059 2060 /* If the command was mapped in an mbuf, free it. */ 2061 if (data->m != NULL) { 2062 bus_dmamap_sync(ring->data_dmat, data->map, 2063 BUS_DMASYNC_POSTWRITE); 2064 bus_dmamap_unload(ring->data_dmat, data->map); 2065 m_freem(data->m); 2066 data->m = NULL; 2067 } 2068 2069 wakeup(&ring->cmd[desc->idx]); 2070} 2071 2072static void 2073wpi_notif_intr(struct wpi_softc *sc) 2074{ 2075 struct ifnet *ifp = sc->sc_ifp; 2076 struct ieee80211com *ic = ifp->if_l2com; 2077 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2078 uint32_t hw; 2079 2080 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 2081 BUS_DMASYNC_POSTREAD); 2082 2083 hw = le32toh(sc->shared->next); 2084 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 2085 2086 while (sc->rxq.cur != hw) { 2087 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 2088 2089 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 2090 struct wpi_rx_desc *desc; 2091 2092 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2093 BUS_DMASYNC_POSTREAD); 2094 desc = mtod(data->m, struct wpi_rx_desc *); 2095 2096 DPRINTF(sc, WPI_DEBUG_NOTIFY, 2097 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 2098 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 2099 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 2100 2101 if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) { 2102 /* Reply to a command. */ 2103 wpi_cmd_done(sc, desc); 2104 } 2105 2106 switch (desc->type) { 2107 case WPI_RX_DONE: 2108 /* An 802.11 frame has been received. */ 2109 wpi_rx_done(sc, desc, data); 2110 2111 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2112 /* wpi_stop() was called. */ 2113 return; 2114 } 2115 2116 break; 2117 2118 case WPI_TX_DONE: 2119 /* An 802.11 frame has been transmitted. */ 2120 wpi_tx_done(sc, desc); 2121 break; 2122 2123 case WPI_RX_STATISTICS: 2124 case WPI_BEACON_STATISTICS: 2125 wpi_rx_statistics(sc, desc, data); 2126 break; 2127 2128 case WPI_BEACON_MISSED: 2129 { 2130 struct wpi_beacon_missed *miss = 2131 (struct wpi_beacon_missed *)(desc + 1); 2132 uint32_t expected, misses, received, threshold; 2133 2134 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2135 BUS_DMASYNC_POSTREAD); 2136 2137 misses = le32toh(miss->consecutive); 2138 expected = le32toh(miss->expected); 2139 received = le32toh(miss->received); 2140 threshold = MAX(2, vap->iv_bmissthreshold); 2141 2142 DPRINTF(sc, WPI_DEBUG_BMISS, 2143 "%s: beacons missed %u(%u) (received %u/%u)\n", 2144 __func__, misses, le32toh(miss->total), received, 2145 expected); 2146 2147 if (misses >= threshold || 2148 (received == 0 && expected >= threshold)) { 2149 WPI_RXON_LOCK(sc); 2150 if (callout_pending(&sc->scan_timeout)) { 2151 wpi_cmd(sc, WPI_CMD_SCAN_ABORT, NULL, 2152 0, 1); 2153 } 2154 WPI_RXON_UNLOCK(sc); 2155 if (vap->iv_state == IEEE80211_S_RUN && 2156 (ic->ic_flags & IEEE80211_F_SCAN) == 0) 2157 ieee80211_beacon_miss(ic); 2158 } 2159 2160 break; 2161 } 2162#ifdef WPI_DEBUG 2163 case WPI_BEACON_SENT: 2164 { 2165 struct wpi_tx_stat *stat = 2166 (struct wpi_tx_stat *)(desc + 1); 2167 uint64_t *tsf = (uint64_t *)(stat + 1); 2168 uint32_t *mode = (uint32_t *)(tsf + 1); 2169 2170 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2171 BUS_DMASYNC_POSTREAD); 2172 2173 DPRINTF(sc, WPI_DEBUG_BEACON, 2174 "beacon sent: rts %u, ack %u, btkill %u, rate %u, " 2175 "duration %u, status %x, tsf %ju, mode %x\n", 2176 stat->rtsfailcnt, stat->ackfailcnt, 2177 stat->btkillcnt, stat->rate, le32toh(stat->duration), 2178 le32toh(stat->status), *tsf, *mode); 2179 2180 break; 2181 } 2182#endif 2183 case WPI_UC_READY: 2184 { 2185 struct wpi_ucode_info *uc = 2186 (struct wpi_ucode_info *)(desc + 1); 2187 2188 /* The microcontroller is ready. */ 2189 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2190 BUS_DMASYNC_POSTREAD); 2191 DPRINTF(sc, WPI_DEBUG_RESET, 2192 "microcode alive notification version=%d.%d " 2193 "subtype=%x alive=%x\n", uc->major, uc->minor, 2194 uc->subtype, le32toh(uc->valid)); 2195 2196 if (le32toh(uc->valid) != 1) { 2197 device_printf(sc->sc_dev, 2198 "microcontroller initialization failed\n"); 2199 wpi_stop_locked(sc); 2200 } 2201 /* Save the address of the error log in SRAM. */ 2202 sc->errptr = le32toh(uc->errptr); 2203 break; 2204 } 2205 case WPI_STATE_CHANGED: 2206 { 2207 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2208 BUS_DMASYNC_POSTREAD); 2209 2210 uint32_t *status = (uint32_t *)(desc + 1); 2211 2212 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2213 le32toh(*status)); 2214 2215 if (le32toh(*status) & 1) { 2216 WPI_NT_LOCK(sc); 2217 wpi_clear_node_table(sc); 2218 WPI_NT_UNLOCK(sc); 2219 taskqueue_enqueue(sc->sc_tq, 2220 &sc->sc_radiooff_task); 2221 return; 2222 } 2223 break; 2224 } 2225#ifdef WPI_DEBUG 2226 case WPI_START_SCAN: 2227 { 2228 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2229 BUS_DMASYNC_POSTREAD); 2230 2231 struct wpi_start_scan *scan = 2232 (struct wpi_start_scan *)(desc + 1); 2233 DPRINTF(sc, WPI_DEBUG_SCAN, 2234 "%s: scanning channel %d status %x\n", 2235 __func__, scan->chan, le32toh(scan->status)); 2236 2237 break; 2238 } 2239#endif 2240 case WPI_STOP_SCAN: 2241 { 2242 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2243 BUS_DMASYNC_POSTREAD); 2244 2245 struct wpi_stop_scan *scan = 2246 (struct wpi_stop_scan *)(desc + 1); 2247 2248 DPRINTF(sc, WPI_DEBUG_SCAN, 2249 "scan finished nchan=%d status=%d chan=%d\n", 2250 scan->nchan, scan->status, scan->chan); 2251 2252 WPI_RXON_LOCK(sc); 2253 callout_stop(&sc->scan_timeout); 2254 WPI_RXON_UNLOCK(sc); 2255 if (scan->status == WPI_SCAN_ABORTED) 2256 ieee80211_cancel_scan(vap); 2257 else 2258 ieee80211_scan_next(vap); 2259 break; 2260 } 2261 } 2262 2263 if (sc->rxq.cur % 8 == 0) { 2264 /* Tell the firmware what we have processed. */ 2265 wpi_update_rx_ring(sc); 2266 } 2267 } 2268} 2269 2270/* 2271 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2272 * from power-down sleep mode. 2273 */ 2274static void 2275wpi_wakeup_intr(struct wpi_softc *sc) 2276{ 2277 int qid; 2278 2279 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2280 "%s: ucode wakeup from power-down sleep\n", __func__); 2281 2282 /* Wakeup RX and TX rings. */ 2283 if (sc->rxq.update) { 2284 sc->rxq.update = 0; 2285 wpi_update_rx_ring(sc); 2286 } 2287 WPI_TXQ_LOCK(sc); 2288 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) { 2289 struct wpi_tx_ring *ring = &sc->txq[qid]; 2290 2291 if (ring->update) { 2292 ring->update = 0; 2293 wpi_update_tx_ring(sc, ring); 2294 } 2295 } 2296 WPI_TXQ_UNLOCK(sc); 2297 2298 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2299} 2300 2301/* 2302 * This function prints firmware registers 2303 */ 2304#ifdef WPI_DEBUG 2305static void 2306wpi_debug_registers(struct wpi_softc *sc) 2307{ 2308 int i; 2309 static const uint32_t csr_tbl[] = { 2310 WPI_HW_IF_CONFIG, 2311 WPI_INT, 2312 WPI_INT_MASK, 2313 WPI_FH_INT, 2314 WPI_GPIO_IN, 2315 WPI_RESET, 2316 WPI_GP_CNTRL, 2317 WPI_EEPROM, 2318 WPI_EEPROM_GP, 2319 WPI_GIO, 2320 WPI_UCODE_GP1, 2321 WPI_UCODE_GP2, 2322 WPI_GIO_CHICKEN, 2323 WPI_ANA_PLL, 2324 WPI_DBG_HPET_MEM, 2325 }; 2326 static const uint32_t prph_tbl[] = { 2327 WPI_APMG_CLK_CTRL, 2328 WPI_APMG_PS, 2329 WPI_APMG_PCI_STT, 2330 WPI_APMG_RFKILL, 2331 }; 2332 2333 DPRINTF(sc, WPI_DEBUG_REGISTER,"%s","\n"); 2334 2335 for (i = 0; i < nitems(csr_tbl); i++) { 2336 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2337 wpi_get_csr_string(csr_tbl[i]), WPI_READ(sc, csr_tbl[i])); 2338 2339 if ((i + 1) % 2 == 0) 2340 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2341 } 2342 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n\n"); 2343 2344 if (wpi_nic_lock(sc) == 0) { 2345 for (i = 0; i < nitems(prph_tbl); i++) { 2346 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2347 wpi_get_prph_string(prph_tbl[i]), 2348 wpi_prph_read(sc, prph_tbl[i])); 2349 2350 if ((i + 1) % 2 == 0) 2351 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2352 } 2353 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2354 wpi_nic_unlock(sc); 2355 } else { 2356 DPRINTF(sc, WPI_DEBUG_REGISTER, 2357 "Cannot access internal registers.\n"); 2358 } 2359} 2360#endif 2361 2362/* 2363 * Dump the error log of the firmware when a firmware panic occurs. Although 2364 * we can't debug the firmware because it is neither open source nor free, it 2365 * can help us to identify certain classes of problems. 2366 */ 2367static void 2368wpi_fatal_intr(struct wpi_softc *sc) 2369{ 2370 struct wpi_fw_dump dump; 2371 uint32_t i, offset, count; 2372 2373 /* Check that the error log address is valid. */ 2374 if (sc->errptr < WPI_FW_DATA_BASE || 2375 sc->errptr + sizeof (dump) > 2376 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2377 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2378 sc->errptr); 2379 return; 2380 } 2381 if (wpi_nic_lock(sc) != 0) { 2382 printf("%s: could not read firmware error log\n", __func__); 2383 return; 2384 } 2385 /* Read number of entries in the log. */ 2386 count = wpi_mem_read(sc, sc->errptr); 2387 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2388 printf("%s: invalid count field (count = %u)\n", __func__, 2389 count); 2390 wpi_nic_unlock(sc); 2391 return; 2392 } 2393 /* Skip "count" field. */ 2394 offset = sc->errptr + sizeof (uint32_t); 2395 printf("firmware error log (count = %u):\n", count); 2396 for (i = 0; i < count; i++) { 2397 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2398 sizeof (dump) / sizeof (uint32_t)); 2399 2400 printf(" error type = \"%s\" (0x%08X)\n", 2401 (dump.desc < nitems(wpi_fw_errmsg)) ? 2402 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2403 dump.desc); 2404 printf(" error data = 0x%08X\n", 2405 dump.data); 2406 printf(" branch link = 0x%08X%08X\n", 2407 dump.blink[0], dump.blink[1]); 2408 printf(" interrupt link = 0x%08X%08X\n", 2409 dump.ilink[0], dump.ilink[1]); 2410 printf(" time = %u\n", dump.time); 2411 2412 offset += sizeof (dump); 2413 } 2414 wpi_nic_unlock(sc); 2415 /* Dump driver status (TX and RX rings) while we're here. */ 2416 printf("driver status:\n"); 2417 WPI_TXQ_LOCK(sc); 2418 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 2419 struct wpi_tx_ring *ring = &sc->txq[i]; 2420 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2421 i, ring->qid, ring->cur, ring->queued); 2422 } 2423 WPI_TXQ_UNLOCK(sc); 2424 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2425} 2426 2427static void 2428wpi_intr(void *arg) 2429{ 2430 struct wpi_softc *sc = arg; 2431 struct ifnet *ifp = sc->sc_ifp; 2432 uint32_t r1, r2; 2433 2434 WPI_LOCK(sc); 2435 2436 /* Disable interrupts. */ 2437 WPI_WRITE(sc, WPI_INT_MASK, 0); 2438 2439 r1 = WPI_READ(sc, WPI_INT); 2440 2441 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) 2442 goto end; /* Hardware gone! */ 2443 2444 r2 = WPI_READ(sc, WPI_FH_INT); 2445 2446 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2447 r1, r2); 2448 2449 if (r1 == 0 && r2 == 0) 2450 goto done; /* Interrupt not for us. */ 2451 2452 /* Acknowledge interrupts. */ 2453 WPI_WRITE(sc, WPI_INT, r1); 2454 WPI_WRITE(sc, WPI_FH_INT, r2); 2455 2456 if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) { 2457 device_printf(sc->sc_dev, "fatal firmware error\n"); 2458#ifdef WPI_DEBUG 2459 wpi_debug_registers(sc); 2460#endif 2461 wpi_fatal_intr(sc); 2462 DPRINTF(sc, WPI_DEBUG_HW, 2463 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2464 "(Hardware Error)"); 2465 taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask); 2466 goto end; 2467 } 2468 2469 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2470 (r2 & WPI_FH_INT_RX)) 2471 wpi_notif_intr(sc); 2472 2473 if (r1 & WPI_INT_ALIVE) 2474 wakeup(sc); /* Firmware is alive. */ 2475 2476 if (r1 & WPI_INT_WAKEUP) 2477 wpi_wakeup_intr(sc); 2478 2479done: 2480 /* Re-enable interrupts. */ 2481 if (ifp->if_flags & IFF_UP) 2482 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2483 2484end: WPI_UNLOCK(sc); 2485} 2486 2487static int 2488wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2489{ 2490 struct ifnet *ifp = sc->sc_ifp; 2491 struct ieee80211_frame *wh; 2492 struct wpi_tx_cmd *cmd; 2493 struct wpi_tx_data *data; 2494 struct wpi_tx_desc *desc; 2495 struct wpi_tx_ring *ring; 2496 struct mbuf *m1; 2497 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2498 int error, i, hdrlen, nsegs, totlen, pad; 2499 2500 WPI_TXQ_LOCK(sc); 2501 2502 KASSERT(buf->size <= sizeof(buf->data), ("buffer overflow")); 2503 2504 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2505 2506 if (sc->txq_active == 0) { 2507 /* wpi_stop() was called */ 2508 error = ENETDOWN; 2509 goto fail; 2510 } 2511 2512 wh = mtod(buf->m, struct ieee80211_frame *); 2513 hdrlen = ieee80211_anyhdrsize(wh); 2514 totlen = buf->m->m_pkthdr.len; 2515 2516 if (hdrlen & 3) { 2517 /* First segment length must be a multiple of 4. */ 2518 pad = 4 - (hdrlen & 3); 2519 } else 2520 pad = 0; 2521 2522 ring = &sc->txq[buf->ac]; 2523 desc = &ring->desc[ring->cur]; 2524 data = &ring->data[ring->cur]; 2525 2526 /* Prepare TX firmware command. */ 2527 cmd = &ring->cmd[ring->cur]; 2528 cmd->code = buf->code; 2529 cmd->flags = 0; 2530 cmd->qid = ring->qid; 2531 cmd->idx = ring->cur; 2532 2533 memcpy(cmd->data, buf->data, buf->size); 2534 2535 /* Save and trim IEEE802.11 header. */ 2536 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen); 2537 m_adj(buf->m, hdrlen); 2538 2539 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2540 segs, &nsegs, BUS_DMA_NOWAIT); 2541 if (error != 0 && error != EFBIG) { 2542 device_printf(sc->sc_dev, 2543 "%s: can't map mbuf (error %d)\n", __func__, error); 2544 goto fail; 2545 } 2546 if (error != 0) { 2547 /* Too many DMA segments, linearize mbuf. */ 2548 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1); 2549 if (m1 == NULL) { 2550 device_printf(sc->sc_dev, 2551 "%s: could not defrag mbuf\n", __func__); 2552 error = ENOBUFS; 2553 goto fail; 2554 } 2555 buf->m = m1; 2556 2557 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2558 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2559 if (error != 0) { 2560 device_printf(sc->sc_dev, 2561 "%s: can't map mbuf (error %d)\n", __func__, 2562 error); 2563 goto fail; 2564 } 2565 } 2566 2567 KASSERT(nsegs < WPI_MAX_SCATTER, 2568 ("too many DMA segments, nsegs (%d) should be less than %d", 2569 nsegs, WPI_MAX_SCATTER)); 2570 2571 data->m = buf->m; 2572 data->ni = buf->ni; 2573 2574 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2575 __func__, ring->qid, ring->cur, totlen, nsegs); 2576 2577 /* Fill TX descriptor. */ 2578 desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs); 2579 /* First DMA segment is used by the TX command. */ 2580 desc->segs[0].addr = htole32(data->cmd_paddr); 2581 desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad); 2582 /* Other DMA segments are for data payload. */ 2583 seg = &segs[0]; 2584 for (i = 1; i <= nsegs; i++) { 2585 desc->segs[i].addr = htole32(seg->ds_addr); 2586 desc->segs[i].len = htole32(seg->ds_len); 2587 seg++; 2588 } 2589 2590 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2591 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2592 BUS_DMASYNC_PREWRITE); 2593 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2594 BUS_DMASYNC_PREWRITE); 2595 2596 /* Kick TX ring. */ 2597 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2598 wpi_update_tx_ring(sc, ring); 2599 2600 if (ring->qid < WPI_CMD_QUEUE_NUM) { 2601 /* Mark TX ring as full if we reach a certain threshold. */ 2602 WPI_TXQ_STATE_LOCK(sc); 2603 if (++ring->queued > WPI_TX_RING_HIMARK) { 2604 sc->qfullmsk |= 1 << ring->qid; 2605 2606 IF_LOCK(&ifp->if_snd); 2607 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2608 IF_UNLOCK(&ifp->if_snd); 2609 } 2610 2611 callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc); 2612 WPI_TXQ_STATE_UNLOCK(sc); 2613 } 2614 2615 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2616 2617 WPI_TXQ_UNLOCK(sc); 2618 2619 return 0; 2620 2621fail: m_freem(buf->m); 2622 2623 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2624 2625 WPI_TXQ_UNLOCK(sc); 2626 2627 return error; 2628} 2629 2630/* 2631 * Construct the data packet for a transmit buffer. 2632 */ 2633static int 2634wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2635{ 2636 const struct ieee80211_txparam *tp; 2637 struct ieee80211vap *vap = ni->ni_vap; 2638 struct ieee80211com *ic = ni->ni_ic; 2639 struct wpi_node *wn = WPI_NODE(ni); 2640 struct ieee80211_channel *chan; 2641 struct ieee80211_frame *wh; 2642 struct ieee80211_key *k = NULL; 2643 struct wpi_buf tx_data; 2644 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2645 uint32_t flags; 2646 uint16_t qos; 2647 uint8_t tid, type; 2648 int ac, error, swcrypt, rate, ismcast, totlen; 2649 2650 wh = mtod(m, struct ieee80211_frame *); 2651 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2652 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2653 2654 /* Select EDCA Access Category and TX ring for this frame. */ 2655 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2656 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2657 tid = qos & IEEE80211_QOS_TID; 2658 } else { 2659 qos = 0; 2660 tid = 0; 2661 } 2662 ac = M_WME_GETAC(m); 2663 2664 chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ? 2665 ni->ni_chan : ic->ic_curchan; 2666 tp = &vap->iv_txparms[ieee80211_chan2mode(chan)]; 2667 2668 /* Choose a TX rate index. */ 2669 if (type == IEEE80211_FC0_TYPE_MGT) 2670 rate = tp->mgmtrate; 2671 else if (ismcast) 2672 rate = tp->mcastrate; 2673 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2674 rate = tp->ucastrate; 2675 else if (m->m_flags & M_EAPOL) 2676 rate = tp->mgmtrate; 2677 else { 2678 /* XXX pass pktlen */ 2679 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2680 rate = ni->ni_txrate; 2681 } 2682 2683 /* Encrypt the frame if need be. */ 2684 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2685 /* Retrieve key for TX. */ 2686 k = ieee80211_crypto_encap(ni, m); 2687 if (k == NULL) { 2688 error = ENOBUFS; 2689 goto fail; 2690 } 2691 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2692 2693 /* 802.11 header may have moved. */ 2694 wh = mtod(m, struct ieee80211_frame *); 2695 } 2696 totlen = m->m_pkthdr.len; 2697 2698 if (ieee80211_radiotap_active_vap(vap)) { 2699 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2700 2701 tap->wt_flags = 0; 2702 tap->wt_rate = rate; 2703 if (k != NULL) 2704 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2705 2706 ieee80211_radiotap_tx(vap, m); 2707 } 2708 2709 flags = 0; 2710 if (!ismcast) { 2711 /* Unicast frame, check if an ACK is expected. */ 2712 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2713 IEEE80211_QOS_ACKPOLICY_NOACK) 2714 flags |= WPI_TX_NEED_ACK; 2715 } 2716 2717 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2718 flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */ 2719 2720 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2721 if (!ismcast) { 2722 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2723 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2724 flags |= WPI_TX_NEED_RTS; 2725 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2726 WPI_RATE_IS_OFDM(rate)) { 2727 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2728 flags |= WPI_TX_NEED_CTS; 2729 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2730 flags |= WPI_TX_NEED_RTS; 2731 } 2732 2733 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2734 flags |= WPI_TX_FULL_TXOP; 2735 } 2736 2737 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2738 if (type == IEEE80211_FC0_TYPE_MGT) { 2739 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2740 2741 /* Tell HW to set timestamp in probe responses. */ 2742 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2743 flags |= WPI_TX_INSERT_TSTAMP; 2744 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2745 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2746 tx->timeout = htole16(3); 2747 else 2748 tx->timeout = htole16(2); 2749 } 2750 2751 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2752 tx->id = WPI_ID_BROADCAST; 2753 else { 2754 if (wn->id == WPI_ID_UNDEFINED) { 2755 device_printf(sc->sc_dev, 2756 "%s: undefined node id\n", __func__); 2757 error = EINVAL; 2758 goto fail; 2759 } 2760 2761 tx->id = wn->id; 2762 } 2763 2764 if (k != NULL && !swcrypt) { 2765 switch (k->wk_cipher->ic_cipher) { 2766 case IEEE80211_CIPHER_AES_CCM: 2767 tx->security = WPI_CIPHER_CCMP; 2768 break; 2769 2770 default: 2771 break; 2772 } 2773 2774 memcpy(tx->key, k->wk_key, k->wk_keylen); 2775 } 2776 2777 tx->len = htole16(totlen); 2778 tx->flags = htole32(flags); 2779 tx->plcp = rate2plcp(rate); 2780 tx->tid = tid; 2781 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2782 tx->ofdm_mask = 0xff; 2783 tx->cck_mask = 0x0f; 2784 tx->rts_ntries = 7; 2785 tx->data_ntries = tp->maxretry; 2786 2787 tx_data.ni = ni; 2788 tx_data.m = m; 2789 tx_data.size = sizeof(struct wpi_cmd_data); 2790 tx_data.code = WPI_CMD_TX_DATA; 2791 tx_data.ac = ac; 2792 2793 return wpi_cmd2(sc, &tx_data); 2794 2795fail: m_freem(m); 2796 return error; 2797} 2798 2799static int 2800wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, 2801 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 2802{ 2803 struct ieee80211vap *vap = ni->ni_vap; 2804 struct ieee80211_key *k = NULL; 2805 struct ieee80211_frame *wh; 2806 struct wpi_buf tx_data; 2807 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2808 uint32_t flags; 2809 uint8_t type; 2810 int ac, rate, swcrypt, totlen; 2811 2812 wh = mtod(m, struct ieee80211_frame *); 2813 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2814 2815 ac = params->ibp_pri & 3; 2816 2817 /* Choose a TX rate index. */ 2818 rate = params->ibp_rate0; 2819 2820 flags = 0; 2821 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2822 flags |= WPI_TX_NEED_ACK; 2823 if (params->ibp_flags & IEEE80211_BPF_RTS) 2824 flags |= WPI_TX_NEED_RTS; 2825 if (params->ibp_flags & IEEE80211_BPF_CTS) 2826 flags |= WPI_TX_NEED_CTS; 2827 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2828 flags |= WPI_TX_FULL_TXOP; 2829 2830 /* Encrypt the frame if need be. */ 2831 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) { 2832 /* Retrieve key for TX. */ 2833 k = ieee80211_crypto_encap(ni, m); 2834 if (k == NULL) { 2835 m_freem(m); 2836 return ENOBUFS; 2837 } 2838 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2839 2840 /* 802.11 header may have moved. */ 2841 wh = mtod(m, struct ieee80211_frame *); 2842 } 2843 totlen = m->m_pkthdr.len; 2844 2845 if (ieee80211_radiotap_active_vap(vap)) { 2846 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2847 2848 tap->wt_flags = 0; 2849 tap->wt_rate = rate; 2850 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) 2851 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2852 2853 ieee80211_radiotap_tx(vap, m); 2854 } 2855 2856 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2857 if (type == IEEE80211_FC0_TYPE_MGT) { 2858 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2859 2860 /* Tell HW to set timestamp in probe responses. */ 2861 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2862 flags |= WPI_TX_INSERT_TSTAMP; 2863 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2864 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2865 tx->timeout = htole16(3); 2866 else 2867 tx->timeout = htole16(2); 2868 } 2869 2870 if (k != NULL && !swcrypt) { 2871 switch (k->wk_cipher->ic_cipher) { 2872 case IEEE80211_CIPHER_AES_CCM: 2873 tx->security = WPI_CIPHER_CCMP; 2874 break; 2875 2876 default: 2877 break; 2878 } 2879 2880 memcpy(tx->key, k->wk_key, k->wk_keylen); 2881 } 2882 2883 tx->len = htole16(totlen); 2884 tx->flags = htole32(flags); 2885 tx->plcp = rate2plcp(rate); 2886 tx->id = WPI_ID_BROADCAST; 2887 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2888 tx->rts_ntries = params->ibp_try1; 2889 tx->data_ntries = params->ibp_try0; 2890 2891 tx_data.ni = ni; 2892 tx_data.m = m; 2893 tx_data.size = sizeof(struct wpi_cmd_data); 2894 tx_data.code = WPI_CMD_TX_DATA; 2895 tx_data.ac = ac; 2896 2897 return wpi_cmd2(sc, &tx_data); 2898} 2899 2900static int 2901wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2902 const struct ieee80211_bpf_params *params) 2903{ 2904 struct ieee80211com *ic = ni->ni_ic; 2905 struct ifnet *ifp = ic->ic_ifp; 2906 struct wpi_softc *sc = ifp->if_softc; 2907 int error = 0; 2908 2909 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2910 2911 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2912 ieee80211_free_node(ni); 2913 m_freem(m); 2914 return ENETDOWN; 2915 } 2916 2917 WPI_TX_LOCK(sc); 2918 if (params == NULL) { 2919 /* 2920 * Legacy path; interpret frame contents to decide 2921 * precisely how to send the frame. 2922 */ 2923 error = wpi_tx_data(sc, m, ni); 2924 } else { 2925 /* 2926 * Caller supplied explicit parameters to use in 2927 * sending the frame. 2928 */ 2929 error = wpi_tx_data_raw(sc, m, ni, params); 2930 } 2931 WPI_TX_UNLOCK(sc); 2932 2933 if (error != 0) { 2934 /* NB: m is reclaimed on tx failure */ 2935 ieee80211_free_node(ni); 2936 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2937 2938 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2939 2940 return error; 2941 } 2942 2943 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2944 2945 return 0; 2946} 2947 2948/** 2949 * Process data waiting to be sent on the IFNET output queue 2950 */ 2951static void 2952wpi_start(struct ifnet *ifp) 2953{ 2954 struct wpi_softc *sc = ifp->if_softc; 2955 struct ieee80211_node *ni; 2956 struct mbuf *m; 2957 2958 WPI_TX_LOCK(sc); 2959 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 2960 2961 for (;;) { 2962 IF_LOCK(&ifp->if_snd); 2963 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2964 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 2965 IF_UNLOCK(&ifp->if_snd); 2966 break; 2967 } 2968 IF_UNLOCK(&ifp->if_snd); 2969 2970 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2971 if (m == NULL) 2972 break; 2973 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 2974 if (wpi_tx_data(sc, m, ni) != 0) { 2975 ieee80211_free_node(ni); 2976 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2977 } 2978 } 2979 2980 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 2981 WPI_TX_UNLOCK(sc); 2982} 2983 2984static void 2985wpi_start_task(void *arg0, int pending) 2986{ 2987 struct wpi_softc *sc = arg0; 2988 struct ifnet *ifp = sc->sc_ifp; 2989 2990 wpi_start(ifp); 2991} 2992 2993static void 2994wpi_watchdog_rfkill(void *arg) 2995{ 2996 struct wpi_softc *sc = arg; 2997 struct ifnet *ifp = sc->sc_ifp; 2998 struct ieee80211com *ic = ifp->if_l2com; 2999 3000 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n"); 3001 3002 /* No need to lock firmware memory. */ 3003 if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) { 3004 /* Radio kill switch is still off. */ 3005 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 3006 sc); 3007 } else 3008 ieee80211_runtask(ic, &sc->sc_radioon_task); 3009} 3010 3011static void 3012wpi_scan_timeout(void *arg) 3013{ 3014 struct wpi_softc *sc = arg; 3015 struct ifnet *ifp = sc->sc_ifp; 3016 3017 if_printf(ifp, "scan timeout\n"); 3018 taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask); 3019} 3020 3021static void 3022wpi_tx_timeout(void *arg) 3023{ 3024 struct wpi_softc *sc = arg; 3025 struct ifnet *ifp = sc->sc_ifp; 3026 3027 if_printf(ifp, "device timeout\n"); 3028 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 3029 taskqueue_enqueue(sc->sc_tq, &sc->sc_reinittask); 3030} 3031 3032static int 3033wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 3034{ 3035 struct wpi_softc *sc = ifp->if_softc; 3036 struct ieee80211com *ic = ifp->if_l2com; 3037 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3038 struct ifreq *ifr = (struct ifreq *) data; 3039 int error = 0; 3040 3041 switch (cmd) { 3042 case SIOCGIFADDR: 3043 error = ether_ioctl(ifp, cmd, data); 3044 break; 3045 case SIOCSIFFLAGS: 3046 if (ifp->if_flags & IFF_UP) { 3047 wpi_init(sc); 3048 3049 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 && 3050 vap != NULL) 3051 ieee80211_stop(vap); 3052 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 3053 wpi_stop(sc); 3054 break; 3055 case SIOCGIFMEDIA: 3056 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 3057 break; 3058 default: 3059 error = EINVAL; 3060 break; 3061 } 3062 return error; 3063} 3064 3065/* 3066 * Send a command to the firmware. 3067 */ 3068static int 3069wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size, 3070 int async) 3071{ 3072 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 3073 struct wpi_tx_desc *desc; 3074 struct wpi_tx_data *data; 3075 struct wpi_tx_cmd *cmd; 3076 struct mbuf *m; 3077 bus_addr_t paddr; 3078 int totlen, error; 3079 3080 WPI_TXQ_LOCK(sc); 3081 3082 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3083 3084 if (sc->txq_active == 0) { 3085 /* wpi_stop() was called */ 3086 error = 0; 3087 goto fail; 3088 } 3089 3090 if (async == 0) 3091 WPI_LOCK_ASSERT(sc); 3092 3093 DPRINTF(sc, WPI_DEBUG_CMD, "%s: cmd %s size %zu async %d\n", 3094 __func__, wpi_cmd_str(code), size, async); 3095 3096 desc = &ring->desc[ring->cur]; 3097 data = &ring->data[ring->cur]; 3098 totlen = 4 + size; 3099 3100 if (size > sizeof cmd->data) { 3101 /* Command is too large to fit in a descriptor. */ 3102 if (totlen > MCLBYTES) { 3103 error = EINVAL; 3104 goto fail; 3105 } 3106 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 3107 if (m == NULL) { 3108 error = ENOMEM; 3109 goto fail; 3110 } 3111 cmd = mtod(m, struct wpi_tx_cmd *); 3112 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 3113 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 3114 if (error != 0) { 3115 m_freem(m); 3116 goto fail; 3117 } 3118 data->m = m; 3119 } else { 3120 cmd = &ring->cmd[ring->cur]; 3121 paddr = data->cmd_paddr; 3122 } 3123 3124 cmd->code = code; 3125 cmd->flags = 0; 3126 cmd->qid = ring->qid; 3127 cmd->idx = ring->cur; 3128 memcpy(cmd->data, buf, size); 3129 3130 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 3131 desc->segs[0].addr = htole32(paddr); 3132 desc->segs[0].len = htole32(totlen); 3133 3134 if (size > sizeof cmd->data) { 3135 bus_dmamap_sync(ring->data_dmat, data->map, 3136 BUS_DMASYNC_PREWRITE); 3137 } else { 3138 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 3139 BUS_DMASYNC_PREWRITE); 3140 } 3141 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 3142 BUS_DMASYNC_PREWRITE); 3143 3144 /* Kick command ring. */ 3145 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 3146 wpi_update_tx_ring(sc, ring); 3147 3148 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3149 3150 WPI_TXQ_UNLOCK(sc); 3151 3152 if (async) 3153 return 0; 3154 3155 return mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 3156 3157fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3158 3159 WPI_TXQ_UNLOCK(sc); 3160 3161 return error; 3162} 3163 3164/* 3165 * Configure HW multi-rate retries. 3166 */ 3167static int 3168wpi_mrr_setup(struct wpi_softc *sc) 3169{ 3170 struct ifnet *ifp = sc->sc_ifp; 3171 struct ieee80211com *ic = ifp->if_l2com; 3172 struct wpi_mrr_setup mrr; 3173 int i, error; 3174 3175 /* CCK rates (not used with 802.11a). */ 3176 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 3177 mrr.rates[i].flags = 0; 3178 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3179 /* Fallback to the immediate lower CCK rate (if any.) */ 3180 mrr.rates[i].next = 3181 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 3182 /* Try twice at this rate before falling back to "next". */ 3183 mrr.rates[i].ntries = WPI_NTRIES_DEFAULT; 3184 } 3185 /* OFDM rates (not used with 802.11b). */ 3186 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 3187 mrr.rates[i].flags = 0; 3188 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3189 /* Fallback to the immediate lower rate (if any.) */ 3190 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 3191 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 3192 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 3193 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 3194 i - 1; 3195 /* Try twice at this rate before falling back to "next". */ 3196 mrr.rates[i].ntries = WPI_NTRIES_DEFAULT; 3197 } 3198 /* Setup MRR for control frames. */ 3199 mrr.which = htole32(WPI_MRR_CTL); 3200 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3201 if (error != 0) { 3202 device_printf(sc->sc_dev, 3203 "could not setup MRR for control frames\n"); 3204 return error; 3205 } 3206 /* Setup MRR for data frames. */ 3207 mrr.which = htole32(WPI_MRR_DATA); 3208 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3209 if (error != 0) { 3210 device_printf(sc->sc_dev, 3211 "could not setup MRR for data frames\n"); 3212 return error; 3213 } 3214 return 0; 3215} 3216 3217static int 3218wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3219{ 3220 struct ieee80211com *ic = ni->ni_ic; 3221 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 3222 struct wpi_node *wn = WPI_NODE(ni); 3223 struct wpi_node_info node; 3224 int error; 3225 3226 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3227 3228 if (wn->id == WPI_ID_UNDEFINED) 3229 return EINVAL; 3230 3231 memset(&node, 0, sizeof node); 3232 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3233 node.id = wn->id; 3234 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3235 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3236 node.action = htole32(WPI_ACTION_SET_RATE); 3237 node.antenna = WPI_ANTENNA_BOTH; 3238 3239 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding node %d (%s)\n", __func__, 3240 wn->id, ether_sprintf(ni->ni_macaddr)); 3241 3242 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 3243 if (error != 0) { 3244 device_printf(sc->sc_dev, 3245 "%s: wpi_cmd() call failed with error code %d\n", __func__, 3246 error); 3247 return error; 3248 } 3249 3250 if (wvp->wv_gtk != 0) { 3251 error = wpi_set_global_keys(ni); 3252 if (error != 0) { 3253 device_printf(sc->sc_dev, 3254 "%s: error while setting global keys\n", __func__); 3255 return ENXIO; 3256 } 3257 } 3258 3259 return 0; 3260} 3261 3262/* 3263 * Broadcast node is used to send group-addressed and management frames. 3264 */ 3265static int 3266wpi_add_broadcast_node(struct wpi_softc *sc, int async) 3267{ 3268 struct ifnet *ifp = sc->sc_ifp; 3269 struct ieee80211com *ic = ifp->if_l2com; 3270 struct wpi_node_info node; 3271 3272 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3273 3274 memset(&node, 0, sizeof node); 3275 IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr); 3276 node.id = WPI_ID_BROADCAST; 3277 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3278 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3279 node.action = htole32(WPI_ACTION_SET_RATE); 3280 node.antenna = WPI_ANTENNA_BOTH; 3281 3282 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding broadcast node\n", __func__); 3283 3284 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 3285} 3286 3287static int 3288wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3289{ 3290 struct wpi_node *wn = WPI_NODE(ni); 3291 int error; 3292 3293 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3294 3295 wn->id = wpi_add_node_entry_sta(sc); 3296 3297 if ((error = wpi_add_node(sc, ni)) != 0) { 3298 wpi_del_node_entry(sc, wn->id); 3299 wn->id = WPI_ID_UNDEFINED; 3300 return error; 3301 } 3302 3303 return 0; 3304} 3305 3306static int 3307wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3308{ 3309 struct wpi_node *wn = WPI_NODE(ni); 3310 int error; 3311 3312 KASSERT(wn->id == WPI_ID_UNDEFINED, 3313 ("the node %d was added before", wn->id)); 3314 3315 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3316 3317 if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) { 3318 device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__); 3319 return ENOMEM; 3320 } 3321 3322 if ((error = wpi_add_node(sc, ni)) != 0) { 3323 wpi_del_node_entry(sc, wn->id); 3324 wn->id = WPI_ID_UNDEFINED; 3325 return error; 3326 } 3327 3328 return 0; 3329} 3330 3331static void 3332wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3333{ 3334 struct wpi_node *wn = WPI_NODE(ni); 3335 struct wpi_cmd_del_node node; 3336 int error; 3337 3338 KASSERT(wn->id != WPI_ID_UNDEFINED, ("undefined node id passed")); 3339 3340 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3341 3342 memset(&node, 0, sizeof node); 3343 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3344 node.count = 1; 3345 3346 DPRINTF(sc, WPI_DEBUG_NODE, "%s: deleting node %d (%s)\n", __func__, 3347 wn->id, ether_sprintf(ni->ni_macaddr)); 3348 3349 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3350 if (error != 0) { 3351 device_printf(sc->sc_dev, 3352 "%s: could not delete node %u, error %d\n", __func__, 3353 wn->id, error); 3354 } 3355} 3356 3357static int 3358wpi_updateedca(struct ieee80211com *ic) 3359{ 3360#define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3361 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3362 struct wpi_edca_params cmd; 3363 int aci, error; 3364 3365 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3366 3367 memset(&cmd, 0, sizeof cmd); 3368 cmd.flags = htole32(WPI_EDCA_UPDATE); 3369 for (aci = 0; aci < WME_NUM_AC; aci++) { 3370 const struct wmeParams *ac = 3371 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 3372 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3373 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3374 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3375 cmd.ac[aci].txoplimit = 3376 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3377 3378 DPRINTF(sc, WPI_DEBUG_EDCA, 3379 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3380 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3381 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3382 cmd.ac[aci].txoplimit); 3383 } 3384 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3385 3386 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3387 3388 return error; 3389#undef WPI_EXP2 3390} 3391 3392static void 3393wpi_set_promisc(struct wpi_softc *sc) 3394{ 3395 struct ifnet *ifp = sc->sc_ifp; 3396 struct ieee80211com *ic = ifp->if_l2com; 3397 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3398 uint32_t promisc_filter; 3399 3400 promisc_filter = WPI_FILTER_CTL; 3401 if (vap != NULL && vap->iv_opmode != IEEE80211_M_HOSTAP) 3402 promisc_filter |= WPI_FILTER_PROMISC; 3403 3404 if (ifp->if_flags & IFF_PROMISC) 3405 sc->rxon.filter |= htole32(promisc_filter); 3406 else 3407 sc->rxon.filter &= ~htole32(promisc_filter); 3408} 3409 3410static void 3411wpi_update_promisc(struct ifnet *ifp) 3412{ 3413 struct wpi_softc *sc = ifp->if_softc; 3414 3415 WPI_RXON_LOCK(sc); 3416 wpi_set_promisc(sc); 3417 3418 if (wpi_send_rxon(sc, 1, 1) != 0) { 3419 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3420 __func__); 3421 } 3422 WPI_RXON_UNLOCK(sc); 3423} 3424 3425static void 3426wpi_update_mcast(struct ifnet *ifp) 3427{ 3428 /* Ignore */ 3429} 3430 3431static void 3432wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3433{ 3434 struct wpi_cmd_led led; 3435 3436 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3437 3438 led.which = which; 3439 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3440 led.off = off; 3441 led.on = on; 3442 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3443} 3444 3445static int 3446wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3447{ 3448 struct wpi_cmd_timing cmd; 3449 uint64_t val, mod; 3450 3451 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3452 3453 memset(&cmd, 0, sizeof cmd); 3454 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3455 cmd.bintval = htole16(ni->ni_intval); 3456 cmd.lintval = htole16(10); 3457 3458 /* Compute remaining time until next beacon. */ 3459 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3460 mod = le64toh(cmd.tstamp) % val; 3461 cmd.binitval = htole32((uint32_t)(val - mod)); 3462 3463 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3464 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3465 3466 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3467} 3468 3469/* 3470 * This function is called periodically (every 60 seconds) to adjust output 3471 * power to temperature changes. 3472 */ 3473static void 3474wpi_power_calibration(struct wpi_softc *sc) 3475{ 3476 int temp; 3477 3478 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3479 3480 /* Update sensor data. */ 3481 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3482 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3483 3484 /* Sanity-check read value. */ 3485 if (temp < -260 || temp > 25) { 3486 /* This can't be correct, ignore. */ 3487 DPRINTF(sc, WPI_DEBUG_TEMP, 3488 "out-of-range temperature reported: %d\n", temp); 3489 return; 3490 } 3491 3492 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3493 3494 /* Adjust Tx power if need be. */ 3495 if (abs(temp - sc->temp) <= 6) 3496 return; 3497 3498 sc->temp = temp; 3499 3500 if (wpi_set_txpower(sc, 1) != 0) { 3501 /* just warn, too bad for the automatic calibration... */ 3502 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3503 } 3504} 3505 3506/* 3507 * Set TX power for current channel. 3508 */ 3509static int 3510wpi_set_txpower(struct wpi_softc *sc, int async) 3511{ 3512 struct wpi_power_group *group; 3513 struct wpi_cmd_txpower cmd; 3514 uint8_t chan; 3515 int idx, is_chan_5ghz, i; 3516 3517 /* Retrieve current channel from last RXON. */ 3518 chan = sc->rxon.chan; 3519 is_chan_5ghz = (sc->rxon.flags & htole32(WPI_RXON_24GHZ)) == 0; 3520 3521 /* Find the TX power group to which this channel belongs. */ 3522 if (is_chan_5ghz) { 3523 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3524 if (chan <= group->chan) 3525 break; 3526 } else 3527 group = &sc->groups[0]; 3528 3529 memset(&cmd, 0, sizeof cmd); 3530 cmd.band = is_chan_5ghz ? WPI_BAND_5GHZ : WPI_BAND_2GHZ; 3531 cmd.chan = htole16(chan); 3532 3533 /* Set TX power for all OFDM and CCK rates. */ 3534 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3535 /* Retrieve TX power for this channel/rate. */ 3536 idx = wpi_get_power_index(sc, group, chan, is_chan_5ghz, i); 3537 3538 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3539 3540 if (is_chan_5ghz) { 3541 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3542 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3543 } else { 3544 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3545 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3546 } 3547 DPRINTF(sc, WPI_DEBUG_TEMP, 3548 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3549 } 3550 3551 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3552} 3553 3554/* 3555 * Determine Tx power index for a given channel/rate combination. 3556 * This takes into account the regulatory information from EEPROM and the 3557 * current temperature. 3558 */ 3559static int 3560wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3561 uint8_t chan, int is_chan_5ghz, int ridx) 3562{ 3563/* Fixed-point arithmetic division using a n-bit fractional part. */ 3564#define fdivround(a, b, n) \ 3565 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3566 3567/* Linear interpolation. */ 3568#define interpolate(x, x1, y1, x2, y2, n) \ 3569 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3570 3571 struct wpi_power_sample *sample; 3572 int pwr, idx; 3573 3574 /* Default TX power is group maximum TX power minus 3dB. */ 3575 pwr = group->maxpwr / 2; 3576 3577 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3578 switch (ridx) { 3579 case WPI_RIDX_OFDM36: 3580 pwr -= is_chan_5ghz ? 5 : 0; 3581 break; 3582 case WPI_RIDX_OFDM48: 3583 pwr -= is_chan_5ghz ? 10 : 7; 3584 break; 3585 case WPI_RIDX_OFDM54: 3586 pwr -= is_chan_5ghz ? 12 : 9; 3587 break; 3588 } 3589 3590 /* Never exceed the channel maximum allowed TX power. */ 3591 pwr = min(pwr, sc->maxpwr[chan]); 3592 3593 /* Retrieve TX power index into gain tables from samples. */ 3594 for (sample = group->samples; sample < &group->samples[3]; sample++) 3595 if (pwr > sample[1].power) 3596 break; 3597 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3598 idx = interpolate(pwr, sample[0].power, sample[0].index, 3599 sample[1].power, sample[1].index, 19); 3600 3601 /*- 3602 * Adjust power index based on current temperature: 3603 * - if cooler than factory-calibrated: decrease output power 3604 * - if warmer than factory-calibrated: increase output power 3605 */ 3606 idx -= (sc->temp - group->temp) * 11 / 100; 3607 3608 /* Decrease TX power for CCK rates (-5dB). */ 3609 if (ridx >= WPI_RIDX_CCK1) 3610 idx += 10; 3611 3612 /* Make sure idx stays in a valid range. */ 3613 if (idx < 0) 3614 return 0; 3615 if (idx > WPI_MAX_PWR_INDEX) 3616 return WPI_MAX_PWR_INDEX; 3617 return idx; 3618 3619#undef interpolate 3620#undef fdivround 3621} 3622 3623/* 3624 * Set STA mode power saving level (between 0 and 5). 3625 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3626 */ 3627static int 3628wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3629{ 3630 struct wpi_pmgt_cmd cmd; 3631 const struct wpi_pmgt *pmgt; 3632 uint32_t max, skip_dtim; 3633 uint32_t reg; 3634 int i; 3635 3636 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3637 "%s: dtim=%d, level=%d, async=%d\n", 3638 __func__, dtim, level, async); 3639 3640 /* Select which PS parameters to use. */ 3641 if (dtim <= 10) 3642 pmgt = &wpi_pmgt[0][level]; 3643 else 3644 pmgt = &wpi_pmgt[1][level]; 3645 3646 memset(&cmd, 0, sizeof cmd); 3647 if (level != 0) /* not CAM */ 3648 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3649 /* Retrieve PCIe Active State Power Management (ASPM). */ 3650 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 3651 if (!(reg & 0x1)) /* L0s Entry disabled. */ 3652 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3653 3654 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3655 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3656 3657 if (dtim == 0) { 3658 dtim = 1; 3659 skip_dtim = 0; 3660 } else 3661 skip_dtim = pmgt->skip_dtim; 3662 3663 if (skip_dtim != 0) { 3664 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3665 max = pmgt->intval[4]; 3666 if (max == (uint32_t)-1) 3667 max = dtim * (skip_dtim + 1); 3668 else if (max > dtim) 3669 max = (max / dtim) * dtim; 3670 } else 3671 max = dtim; 3672 3673 for (i = 0; i < 5; i++) 3674 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3675 3676 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3677} 3678 3679static int 3680wpi_send_btcoex(struct wpi_softc *sc) 3681{ 3682 struct wpi_bluetooth cmd; 3683 3684 memset(&cmd, 0, sizeof cmd); 3685 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3686 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3687 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3688 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3689 __func__); 3690 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3691} 3692 3693static int 3694wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3695{ 3696 int error; 3697 3698 if (async) 3699 WPI_RXON_LOCK_ASSERT(sc); 3700 3701 if (assoc && wpi_check_bss_filter(sc) != 0) { 3702 struct wpi_assoc rxon_assoc; 3703 3704 rxon_assoc.flags = sc->rxon.flags; 3705 rxon_assoc.filter = sc->rxon.filter; 3706 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3707 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3708 rxon_assoc.reserved = 0; 3709 3710 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3711 sizeof (struct wpi_assoc), async); 3712 if (error != 0) { 3713 device_printf(sc->sc_dev, 3714 "RXON_ASSOC command failed, error %d\n", error); 3715 return error; 3716 } 3717 } else { 3718 if (async) { 3719 WPI_NT_LOCK(sc); 3720 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3721 sizeof (struct wpi_rxon), async); 3722 if (error == 0) 3723 wpi_clear_node_table(sc); 3724 WPI_NT_UNLOCK(sc); 3725 } else { 3726 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3727 sizeof (struct wpi_rxon), async); 3728 if (error == 0) 3729 wpi_clear_node_table(sc); 3730 } 3731 3732 if (error != 0) { 3733 device_printf(sc->sc_dev, 3734 "RXON command failed, error %d\n", error); 3735 return error; 3736 } 3737 3738 /* Add broadcast node. */ 3739 error = wpi_add_broadcast_node(sc, async); 3740 if (error != 0) { 3741 device_printf(sc->sc_dev, 3742 "could not add broadcast node, error %d\n", error); 3743 return error; 3744 } 3745 } 3746 3747 /* Configuration has changed, set Tx power accordingly. */ 3748 if ((error = wpi_set_txpower(sc, async)) != 0) { 3749 device_printf(sc->sc_dev, 3750 "%s: could not set TX power, error %d\n", __func__, error); 3751 return error; 3752 } 3753 3754 return 0; 3755} 3756 3757/** 3758 * Configure the card to listen to a particular channel, this transisions the 3759 * card in to being able to receive frames from remote devices. 3760 */ 3761static int 3762wpi_config(struct wpi_softc *sc) 3763{ 3764 struct ifnet *ifp = sc->sc_ifp; 3765 struct ieee80211com *ic = ifp->if_l2com; 3766 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3767 struct ieee80211_channel *c = ic->ic_curchan; 3768 int error; 3769 3770 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3771 3772 /* Set power saving level to CAM during initialization. */ 3773 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3774 device_printf(sc->sc_dev, 3775 "%s: could not set power saving level\n", __func__); 3776 return error; 3777 } 3778 3779 /* Configure bluetooth coexistence. */ 3780 if ((error = wpi_send_btcoex(sc)) != 0) { 3781 device_printf(sc->sc_dev, 3782 "could not configure bluetooth coexistence\n"); 3783 return error; 3784 } 3785 3786 /* Configure adapter. */ 3787 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3788 IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr); 3789 3790 /* Set default channel. */ 3791 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 3792 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3793 if (IEEE80211_IS_CHAN_2GHZ(c)) 3794 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3795 3796 sc->rxon.filter = WPI_FILTER_MULTICAST; 3797 switch (ic->ic_opmode) { 3798 case IEEE80211_M_STA: 3799 sc->rxon.mode = WPI_MODE_STA; 3800 break; 3801 case IEEE80211_M_IBSS: 3802 sc->rxon.mode = WPI_MODE_IBSS; 3803 sc->rxon.filter |= WPI_FILTER_BEACON; 3804 break; 3805 case IEEE80211_M_HOSTAP: 3806 /* XXX workaround for beaconing */ 3807 sc->rxon.mode = WPI_MODE_IBSS; 3808 sc->rxon.filter |= WPI_FILTER_ASSOC | WPI_FILTER_PROMISC; 3809 break; 3810 case IEEE80211_M_AHDEMO: 3811 sc->rxon.mode = WPI_MODE_HOSTAP; 3812 break; 3813 case IEEE80211_M_MONITOR: 3814 sc->rxon.mode = WPI_MODE_MONITOR; 3815 break; 3816 default: 3817 device_printf(sc->sc_dev, "unknown opmode %d\n", 3818 ic->ic_opmode); 3819 return EINVAL; 3820 } 3821 sc->rxon.filter = htole32(sc->rxon.filter); 3822 wpi_set_promisc(sc); 3823 sc->rxon.cck_mask = 0x0f; /* not yet negotiated */ 3824 sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */ 3825 3826 /* XXX Current configuration may be unusable. */ 3827 if (IEEE80211_IS_CHAN_NOADHOC(c) && sc->rxon.mode == WPI_MODE_IBSS) { 3828 device_printf(sc->sc_dev, 3829 "%s: invalid channel (%d) selected for IBSS mode\n", 3830 __func__, ieee80211_chan2ieee(ic, c)); 3831 return EINVAL; 3832 } 3833 3834 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) { 3835 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3836 __func__); 3837 return error; 3838 } 3839 3840 /* Setup rate scalling. */ 3841 if ((error = wpi_mrr_setup(sc)) != 0) { 3842 device_printf(sc->sc_dev, "could not setup MRR, error %d\n", 3843 error); 3844 return error; 3845 } 3846 3847 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3848 3849 return 0; 3850} 3851 3852static uint16_t 3853wpi_get_active_dwell_time(struct wpi_softc *sc, 3854 struct ieee80211_channel *c, uint8_t n_probes) 3855{ 3856 /* No channel? Default to 2GHz settings. */ 3857 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) { 3858 return (WPI_ACTIVE_DWELL_TIME_2GHZ + 3859 WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1)); 3860 } 3861 3862 /* 5GHz dwell time. */ 3863 return (WPI_ACTIVE_DWELL_TIME_5GHZ + 3864 WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1)); 3865} 3866 3867/* 3868 * Limit the total dwell time. 3869 * 3870 * Returns the dwell time in milliseconds. 3871 */ 3872static uint16_t 3873wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time) 3874{ 3875 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3876 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3877 int bintval = 0; 3878 3879 /* bintval is in TU (1.024mS) */ 3880 if (vap != NULL) 3881 bintval = vap->iv_bss->ni_intval; 3882 3883 /* 3884 * If it's non-zero, we should calculate the minimum of 3885 * it and the DWELL_BASE. 3886 * 3887 * XXX Yes, the math should take into account that bintval 3888 * is 1.024mS, not 1mS.. 3889 */ 3890 if (bintval > 0) { 3891 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 3892 bintval); 3893 return (MIN(dwell_time, bintval - WPI_CHANNEL_TUNE_TIME * 2)); 3894 } 3895 3896 /* No association context? Default. */ 3897 return dwell_time; 3898} 3899 3900static uint16_t 3901wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 3902{ 3903 uint16_t passive; 3904 3905 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 3906 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 3907 else 3908 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 3909 3910 /* Clamp to the beacon interval if we're associated. */ 3911 return (wpi_limit_dwell(sc, passive)); 3912} 3913 3914static uint32_t 3915wpi_get_scan_pause_time(uint32_t time, uint16_t bintval) 3916{ 3917 uint32_t mod = (time % bintval) * IEEE80211_DUR_TU; 3918 uint32_t nbeacons = time / bintval; 3919 3920 if (mod > WPI_PAUSE_MAX_TIME) 3921 mod = WPI_PAUSE_MAX_TIME; 3922 3923 return WPI_PAUSE_SCAN(nbeacons, mod); 3924} 3925 3926/* 3927 * Send a scan request to the firmware. 3928 */ 3929static int 3930wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 3931{ 3932 struct ifnet *ifp = sc->sc_ifp; 3933 struct ieee80211com *ic = ifp->if_l2com; 3934 struct ieee80211_scan_state *ss = ic->ic_scan; 3935 struct ieee80211vap *vap = ss->ss_vap; 3936 struct wpi_scan_hdr *hdr; 3937 struct wpi_cmd_data *tx; 3938 struct wpi_scan_essid *essids; 3939 struct wpi_scan_chan *chan; 3940 struct ieee80211_frame *wh; 3941 struct ieee80211_rateset *rs; 3942 uint16_t dwell_active, dwell_passive; 3943 uint8_t *buf, *frm; 3944 int bgscan, bintval, buflen, error, i, nssid; 3945 3946 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3947 3948 /* 3949 * We are absolutely not allowed to send a scan command when another 3950 * scan command is pending. 3951 */ 3952 if (callout_pending(&sc->scan_timeout)) { 3953 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 3954 __func__); 3955 error = EAGAIN; 3956 goto fail; 3957 } 3958 3959 bgscan = wpi_check_bss_filter(sc); 3960 bintval = vap->iv_bss->ni_intval; 3961 if (bgscan != 0 && 3962 bintval < WPI_QUIET_TIME_DEFAULT + WPI_CHANNEL_TUNE_TIME * 2) { 3963 error = EOPNOTSUPP; 3964 goto fail; 3965 } 3966 3967 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 3968 if (buf == NULL) { 3969 device_printf(sc->sc_dev, 3970 "%s: could not allocate buffer for scan command\n", 3971 __func__); 3972 error = ENOMEM; 3973 goto fail; 3974 } 3975 hdr = (struct wpi_scan_hdr *)buf; 3976 3977 /* 3978 * Move to the next channel if no packets are received within 10 msecs 3979 * after sending the probe request. 3980 */ 3981 hdr->quiet_time = htole16(WPI_QUIET_TIME_DEFAULT); 3982 hdr->quiet_threshold = htole16(1); 3983 3984 if (bgscan != 0) { 3985 /* 3986 * Max needs to be greater than active and passive and quiet! 3987 * It's also in microseconds! 3988 */ 3989 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 3990 hdr->pause_svc = htole32(wpi_get_scan_pause_time(100, 3991 bintval)); 3992 } 3993 3994 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 3995 3996 tx = (struct wpi_cmd_data *)(hdr + 1); 3997 tx->flags = htole32(WPI_TX_AUTO_SEQ); 3998 tx->id = WPI_ID_BROADCAST; 3999 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 4000 4001 if (IEEE80211_IS_CHAN_5GHZ(c)) { 4002 /* Send probe requests at 6Mbps. */ 4003 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 4004 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 4005 } else { 4006 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 4007 /* Send probe requests at 1Mbps. */ 4008 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 4009 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 4010 } 4011 4012 essids = (struct wpi_scan_essid *)(tx + 1); 4013 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 4014 for (i = 0; i < nssid; i++) { 4015 essids[i].id = IEEE80211_ELEMID_SSID; 4016 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 4017 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 4018#ifdef WPI_DEBUG 4019 if (sc->sc_debug & WPI_DEBUG_SCAN) { 4020 printf("Scanning Essid: "); 4021 ieee80211_print_essid(essids[i].data, essids[i].len); 4022 printf("\n"); 4023 } 4024#endif 4025 } 4026 4027 /* 4028 * Build a probe request frame. Most of the following code is a 4029 * copy & paste of what is done in net80211. 4030 */ 4031 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 4032 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 4033 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 4034 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 4035 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 4036 IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr); 4037 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 4038 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 4039 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 4040 4041 frm = (uint8_t *)(wh + 1); 4042 frm = ieee80211_add_ssid(frm, NULL, 0); 4043 frm = ieee80211_add_rates(frm, rs); 4044 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 4045 frm = ieee80211_add_xrates(frm, rs); 4046 4047 /* Set length of probe request. */ 4048 tx->len = htole16(frm - (uint8_t *)wh); 4049 4050 /* 4051 * Construct information about the channel that we 4052 * want to scan. The firmware expects this to be directly 4053 * after the scan probe request 4054 */ 4055 chan = (struct wpi_scan_chan *)frm; 4056 chan->chan = htole16(ieee80211_chan2ieee(ic, c)); 4057 chan->flags = 0; 4058 if (nssid) { 4059 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 4060 chan->flags |= WPI_CHAN_NPBREQS(nssid); 4061 } else 4062 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 4063 4064 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 4065 chan->flags |= WPI_CHAN_ACTIVE; 4066 4067 /* 4068 * Calculate the active/passive dwell times. 4069 */ 4070 4071 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 4072 dwell_passive = wpi_get_passive_dwell_time(sc, c); 4073 4074 /* Make sure they're valid. */ 4075 if (dwell_active > dwell_passive) 4076 dwell_active = dwell_passive; 4077 4078 chan->active = htole16(dwell_active); 4079 chan->passive = htole16(dwell_passive); 4080 4081 chan->dsp_gain = 0x6e; /* Default level */ 4082 4083 if (IEEE80211_IS_CHAN_5GHZ(c)) 4084 chan->rf_gain = 0x3b; 4085 else 4086 chan->rf_gain = 0x28; 4087 4088 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 4089 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 4090 4091 hdr->nchan++; 4092 4093 if (hdr->nchan == 1 && sc->rxon.chan == chan->chan) { 4094 /* XXX Force probe request transmission. */ 4095 memcpy(chan + 1, chan, sizeof (struct wpi_scan_chan)); 4096 4097 chan++; 4098 4099 /* Reduce unnecessary delay. */ 4100 chan->flags = 0; 4101 chan->passive = chan->active = hdr->quiet_time; 4102 4103 hdr->nchan++; 4104 } 4105 4106 chan++; 4107 4108 buflen = (uint8_t *)chan - buf; 4109 hdr->len = htole16(buflen); 4110 4111 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 4112 hdr->nchan); 4113 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 4114 free(buf, M_DEVBUF); 4115 4116 if (error != 0) 4117 goto fail; 4118 4119 callout_reset(&sc->scan_timeout, 5*hz, wpi_scan_timeout, sc); 4120 4121 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4122 4123 return 0; 4124 4125fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4126 4127 return error; 4128} 4129 4130static int 4131wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 4132{ 4133 struct ieee80211com *ic = vap->iv_ic; 4134 struct ieee80211_node *ni = vap->iv_bss; 4135 struct ieee80211_channel *c = ni->ni_chan; 4136 int error; 4137 4138 WPI_RXON_LOCK(sc); 4139 4140 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4141 4142 /* Update adapter configuration. */ 4143 sc->rxon.associd = 0; 4144 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 4145 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4146 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4147 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4148 if (IEEE80211_IS_CHAN_2GHZ(c)) 4149 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4150 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4151 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4152 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4153 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4154 if (IEEE80211_IS_CHAN_A(c)) { 4155 sc->rxon.cck_mask = 0; 4156 sc->rxon.ofdm_mask = 0x15; 4157 } else if (IEEE80211_IS_CHAN_B(c)) { 4158 sc->rxon.cck_mask = 0x03; 4159 sc->rxon.ofdm_mask = 0; 4160 } else { 4161 /* Assume 802.11b/g. */ 4162 sc->rxon.cck_mask = 0x0f; 4163 sc->rxon.ofdm_mask = 0x15; 4164 } 4165 4166 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n", 4167 sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask, 4168 sc->rxon.ofdm_mask); 4169 4170 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4171 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4172 __func__); 4173 } 4174 4175 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4176 4177 WPI_RXON_UNLOCK(sc); 4178 4179 return error; 4180} 4181 4182static int 4183wpi_config_beacon(struct wpi_vap *wvp) 4184{ 4185 struct ieee80211com *ic = wvp->wv_vap.iv_ic; 4186 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4187 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4188 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4189 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 4190 struct ieee80211_tim_ie *tie; 4191 struct mbuf *m; 4192 uint8_t *ptr; 4193 int error; 4194 4195 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4196 4197 WPI_VAP_LOCK_ASSERT(wvp); 4198 4199 cmd->len = htole16(bcn->m->m_pkthdr.len); 4200 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 4201 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 4202 4203 /* XXX seems to be unused */ 4204 if (*(bo->bo_tim) == IEEE80211_ELEMID_TIM) { 4205 tie = (struct ieee80211_tim_ie *) bo->bo_tim; 4206 ptr = mtod(bcn->m, uint8_t *); 4207 4208 cmd->tim = htole16(bo->bo_tim - ptr); 4209 cmd->timsz = tie->tim_len; 4210 } 4211 4212 /* Necessary for recursion in ieee80211_beacon_update(). */ 4213 m = bcn->m; 4214 bcn->m = m_dup(m, M_NOWAIT); 4215 if (bcn->m == NULL) { 4216 device_printf(sc->sc_dev, 4217 "%s: could not copy beacon frame\n", __func__); 4218 error = ENOMEM; 4219 goto end; 4220 } 4221 4222 if ((error = wpi_cmd2(sc, bcn)) != 0) { 4223 device_printf(sc->sc_dev, 4224 "%s: could not update beacon frame, error %d", __func__, 4225 error); 4226 } 4227 4228 /* Restore mbuf. */ 4229end: bcn->m = m; 4230 4231 return error; 4232} 4233 4234static int 4235wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 4236{ 4237 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 4238 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4239 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4240 struct mbuf *m; 4241 int error; 4242 4243 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4244 4245 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 4246 return EINVAL; 4247 4248 m = ieee80211_beacon_alloc(ni, bo); 4249 if (m == NULL) { 4250 device_printf(sc->sc_dev, 4251 "%s: could not allocate beacon frame\n", __func__); 4252 return ENOMEM; 4253 } 4254 4255 WPI_VAP_LOCK(wvp); 4256 if (bcn->m != NULL) 4257 m_freem(bcn->m); 4258 4259 bcn->m = m; 4260 4261 error = wpi_config_beacon(wvp); 4262 WPI_VAP_UNLOCK(wvp); 4263 4264 return error; 4265} 4266 4267static void 4268wpi_update_beacon(struct ieee80211vap *vap, int item) 4269{ 4270 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 4271 struct wpi_vap *wvp = WPI_VAP(vap); 4272 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4273 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4274 struct ieee80211_node *ni = vap->iv_bss; 4275 int mcast = 0; 4276 4277 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4278 4279 WPI_VAP_LOCK(wvp); 4280 if (bcn->m == NULL) { 4281 bcn->m = ieee80211_beacon_alloc(ni, bo); 4282 if (bcn->m == NULL) { 4283 device_printf(sc->sc_dev, 4284 "%s: could not allocate beacon frame\n", __func__); 4285 4286 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, 4287 __func__); 4288 4289 WPI_VAP_UNLOCK(wvp); 4290 return; 4291 } 4292 } 4293 WPI_VAP_UNLOCK(wvp); 4294 4295 if (item == IEEE80211_BEACON_TIM) 4296 mcast = 1; /* TODO */ 4297 4298 setbit(bo->bo_flags, item); 4299 ieee80211_beacon_update(ni, bo, bcn->m, mcast); 4300 4301 WPI_VAP_LOCK(wvp); 4302 wpi_config_beacon(wvp); 4303 WPI_VAP_UNLOCK(wvp); 4304 4305 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4306} 4307 4308static void 4309wpi_newassoc(struct ieee80211_node *ni, int isnew) 4310{ 4311 struct ieee80211vap *vap = ni->ni_vap; 4312 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4313 struct wpi_node *wn = WPI_NODE(ni); 4314 int error; 4315 4316 WPI_NT_LOCK(sc); 4317 4318 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4319 4320 if (vap->iv_opmode != IEEE80211_M_STA && wn->id == WPI_ID_UNDEFINED) { 4321 if ((error = wpi_add_ibss_node(sc, ni)) != 0) { 4322 device_printf(sc->sc_dev, 4323 "%s: could not add IBSS node, error %d\n", 4324 __func__, error); 4325 } 4326 } 4327 WPI_NT_UNLOCK(sc); 4328} 4329 4330static int 4331wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 4332{ 4333 struct ieee80211com *ic = vap->iv_ic; 4334 struct ieee80211_node *ni = vap->iv_bss; 4335 struct ieee80211_channel *c = ni->ni_chan; 4336 int error; 4337 4338 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4339 4340 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 4341 /* Link LED blinks while monitoring. */ 4342 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 4343 return 0; 4344 } 4345 4346 /* XXX kernel panic workaround */ 4347 if (c == IEEE80211_CHAN_ANYC) { 4348 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 4349 __func__); 4350 return EINVAL; 4351 } 4352 4353 if ((error = wpi_set_timing(sc, ni)) != 0) { 4354 device_printf(sc->sc_dev, 4355 "%s: could not set timing, error %d\n", __func__, error); 4356 return error; 4357 } 4358 4359 /* Update adapter configuration. */ 4360 WPI_RXON_LOCK(sc); 4361 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4362 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 4363 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4364 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4365 if (IEEE80211_IS_CHAN_2GHZ(c)) 4366 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4367 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4368 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4369 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4370 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4371 if (IEEE80211_IS_CHAN_A(c)) { 4372 sc->rxon.cck_mask = 0; 4373 sc->rxon.ofdm_mask = 0x15; 4374 } else if (IEEE80211_IS_CHAN_B(c)) { 4375 sc->rxon.cck_mask = 0x03; 4376 sc->rxon.ofdm_mask = 0; 4377 } else { 4378 /* Assume 802.11b/g. */ 4379 sc->rxon.cck_mask = 0x0f; 4380 sc->rxon.ofdm_mask = 0x15; 4381 } 4382 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 4383 4384 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 4385 sc->rxon.chan, sc->rxon.flags); 4386 4387 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4388 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4389 __func__); 4390 return error; 4391 } 4392 4393 /* Start periodic calibration timer. */ 4394 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 4395 4396 WPI_RXON_UNLOCK(sc); 4397 4398 if (vap->iv_opmode == IEEE80211_M_IBSS || 4399 vap->iv_opmode == IEEE80211_M_HOSTAP) { 4400 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 4401 device_printf(sc->sc_dev, 4402 "%s: could not setup beacon, error %d\n", __func__, 4403 error); 4404 return error; 4405 } 4406 } 4407 4408 if (vap->iv_opmode == IEEE80211_M_STA) { 4409 /* Add BSS node. */ 4410 WPI_NT_LOCK(sc); 4411 error = wpi_add_sta_node(sc, ni); 4412 WPI_NT_UNLOCK(sc); 4413 if (error != 0) { 4414 device_printf(sc->sc_dev, 4415 "%s: could not add BSS node, error %d\n", __func__, 4416 error); 4417 return error; 4418 } 4419 } 4420 4421 /* Link LED always on while associated. */ 4422 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4423 4424 /* Enable power-saving mode if requested by user. */ 4425 if ((vap->iv_flags & IEEE80211_F_PMGTON) && 4426 vap->iv_opmode != IEEE80211_M_IBSS) 4427 (void)wpi_set_pslevel(sc, 0, 3, 1); 4428 4429 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4430 4431 return 0; 4432} 4433 4434static int 4435wpi_load_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4436{ 4437 const struct ieee80211_cipher *cip = k->wk_cipher; 4438 struct ieee80211vap *vap = ni->ni_vap; 4439 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4440 struct wpi_node *wn = WPI_NODE(ni); 4441 struct wpi_node_info node; 4442 uint16_t kflags; 4443 int error; 4444 4445 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4446 4447 if (wpi_check_node_entry(sc, wn->id) == 0) { 4448 device_printf(sc->sc_dev, "%s: node does not exist\n", 4449 __func__); 4450 return 0; 4451 } 4452 4453 switch (cip->ic_cipher) { 4454 case IEEE80211_CIPHER_AES_CCM: 4455 kflags = WPI_KFLAG_CCMP; 4456 break; 4457 4458 default: 4459 device_printf(sc->sc_dev, "%s: unknown cipher %d\n", __func__, 4460 cip->ic_cipher); 4461 return 0; 4462 } 4463 4464 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4465 if (k->wk_flags & IEEE80211_KEY_GROUP) 4466 kflags |= WPI_KFLAG_MULTICAST; 4467 4468 memset(&node, 0, sizeof node); 4469 node.id = wn->id; 4470 node.control = WPI_NODE_UPDATE; 4471 node.flags = WPI_FLAG_KEY_SET; 4472 node.kflags = htole16(kflags); 4473 memcpy(node.key, k->wk_key, k->wk_keylen); 4474again: 4475 DPRINTF(sc, WPI_DEBUG_KEY, 4476 "%s: setting %s key id %d for node %d (%s)\n", __func__, 4477 (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", k->wk_keyix, 4478 node.id, ether_sprintf(ni->ni_macaddr)); 4479 4480 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4481 if (error != 0) { 4482 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4483 error); 4484 return !error; 4485 } 4486 4487 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4488 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4489 kflags |= WPI_KFLAG_MULTICAST; 4490 node.kflags = htole16(kflags); 4491 4492 goto again; 4493 } 4494 4495 return 1; 4496} 4497 4498static void 4499wpi_load_key_cb(void *arg, struct ieee80211_node *ni) 4500{ 4501 const struct ieee80211_key *k = arg; 4502 struct ieee80211vap *vap = ni->ni_vap; 4503 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4504 struct wpi_node *wn = WPI_NODE(ni); 4505 int error; 4506 4507 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4508 return; 4509 4510 WPI_NT_LOCK(sc); 4511 error = wpi_load_key(ni, k); 4512 WPI_NT_UNLOCK(sc); 4513 4514 if (error == 0) { 4515 device_printf(sc->sc_dev, "%s: error while setting key\n", 4516 __func__); 4517 } 4518} 4519 4520static int 4521wpi_set_global_keys(struct ieee80211_node *ni) 4522{ 4523 struct ieee80211vap *vap = ni->ni_vap; 4524 struct ieee80211_key *wk = &vap->iv_nw_keys[0]; 4525 int error = 1; 4526 4527 for (; wk < &vap->iv_nw_keys[IEEE80211_WEP_NKID] && error; wk++) 4528 if (wk->wk_keyix != IEEE80211_KEYIX_NONE) 4529 error = wpi_load_key(ni, wk); 4530 4531 return !error; 4532} 4533 4534static int 4535wpi_del_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4536{ 4537 struct ieee80211vap *vap = ni->ni_vap; 4538 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4539 struct wpi_node *wn = WPI_NODE(ni); 4540 struct wpi_node_info node; 4541 uint16_t kflags; 4542 int error; 4543 4544 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4545 4546 if (wpi_check_node_entry(sc, wn->id) == 0) { 4547 DPRINTF(sc, WPI_DEBUG_KEY, "%s: node was removed\n", __func__); 4548 return 1; /* Nothing to do. */ 4549 } 4550 4551 kflags = WPI_KFLAG_KID(k->wk_keyix); 4552 if (k->wk_flags & IEEE80211_KEY_GROUP) 4553 kflags |= WPI_KFLAG_MULTICAST; 4554 4555 memset(&node, 0, sizeof node); 4556 node.id = wn->id; 4557 node.control = WPI_NODE_UPDATE; 4558 node.flags = WPI_FLAG_KEY_SET; 4559 node.kflags = htole16(kflags); 4560again: 4561 DPRINTF(sc, WPI_DEBUG_KEY, "%s: deleting %s key %d for node %d (%s)\n", 4562 __func__, (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", 4563 k->wk_keyix, node.id, ether_sprintf(ni->ni_macaddr)); 4564 4565 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4566 if (error != 0) { 4567 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4568 error); 4569 return !error; 4570 } 4571 4572 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4573 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4574 kflags |= WPI_KFLAG_MULTICAST; 4575 node.kflags = htole16(kflags); 4576 4577 goto again; 4578 } 4579 4580 return 1; 4581} 4582 4583static void 4584wpi_del_key_cb(void *arg, struct ieee80211_node *ni) 4585{ 4586 const struct ieee80211_key *k = arg; 4587 struct ieee80211vap *vap = ni->ni_vap; 4588 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4589 struct wpi_node *wn = WPI_NODE(ni); 4590 int error; 4591 4592 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4593 return; 4594 4595 WPI_NT_LOCK(sc); 4596 error = wpi_del_key(ni, k); 4597 WPI_NT_UNLOCK(sc); 4598 4599 if (error == 0) { 4600 device_printf(sc->sc_dev, "%s: error while deleting key\n", 4601 __func__); 4602 } 4603} 4604 4605static int 4606wpi_process_key(struct ieee80211vap *vap, const struct ieee80211_key *k, 4607 int set) 4608{ 4609 struct ieee80211com *ic = vap->iv_ic; 4610 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4611 struct wpi_vap *wvp = WPI_VAP(vap); 4612 struct ieee80211_node *ni; 4613 int error, ni_ref = 0; 4614 4615 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4616 4617 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) { 4618 /* Not for us. */ 4619 return 1; 4620 } 4621 4622 if (!(k->wk_flags & IEEE80211_KEY_RECV)) { 4623 /* XMIT keys are handled in wpi_tx_data(). */ 4624 return 1; 4625 } 4626 4627 /* Handle group keys. */ 4628 if (&vap->iv_nw_keys[0] <= k && 4629 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4630 WPI_NT_LOCK(sc); 4631 if (set) 4632 wvp->wv_gtk |= WPI_VAP_KEY(k->wk_keyix); 4633 else 4634 wvp->wv_gtk &= ~WPI_VAP_KEY(k->wk_keyix); 4635 WPI_NT_UNLOCK(sc); 4636 4637 if (vap->iv_state == IEEE80211_S_RUN) { 4638 ieee80211_iterate_nodes(&ic->ic_sta, 4639 set ? wpi_load_key_cb : wpi_del_key_cb, 4640 __DECONST(void *, k)); 4641 } 4642 4643 return 1; 4644 } 4645 4646 switch (vap->iv_opmode) { 4647 case IEEE80211_M_STA: 4648 ni = vap->iv_bss; 4649 break; 4650 4651 case IEEE80211_M_IBSS: 4652 case IEEE80211_M_AHDEMO: 4653 case IEEE80211_M_HOSTAP: 4654 ni = ieee80211_find_vap_node(&ic->ic_sta, vap, k->wk_macaddr); 4655 if (ni == NULL) 4656 return 0; /* should not happen */ 4657 4658 ni_ref = 1; 4659 break; 4660 4661 default: 4662 device_printf(sc->sc_dev, "%s: unknown opmode %d\n", __func__, 4663 vap->iv_opmode); 4664 return 0; 4665 } 4666 4667 WPI_NT_LOCK(sc); 4668 if (set) 4669 error = wpi_load_key(ni, k); 4670 else 4671 error = wpi_del_key(ni, k); 4672 WPI_NT_UNLOCK(sc); 4673 4674 if (ni_ref) 4675 ieee80211_node_decref(ni); 4676 4677 return error; 4678} 4679 4680static int 4681wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k, 4682 const uint8_t mac[IEEE80211_ADDR_LEN]) 4683{ 4684 return wpi_process_key(vap, k, 1); 4685} 4686 4687static int 4688wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4689{ 4690 return wpi_process_key(vap, k, 0); 4691} 4692 4693/* 4694 * This function is called after the runtime firmware notifies us of its 4695 * readiness (called in a process context). 4696 */ 4697static int 4698wpi_post_alive(struct wpi_softc *sc) 4699{ 4700 int ntries, error; 4701 4702 /* Check (again) that the radio is not disabled. */ 4703 if ((error = wpi_nic_lock(sc)) != 0) 4704 return error; 4705 4706 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4707 4708 /* NB: Runtime firmware must be up and running. */ 4709 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4710 device_printf(sc->sc_dev, 4711 "RF switch: radio disabled (%s)\n", __func__); 4712 wpi_nic_unlock(sc); 4713 return EPERM; /* :-) */ 4714 } 4715 wpi_nic_unlock(sc); 4716 4717 /* Wait for thermal sensor to calibrate. */ 4718 for (ntries = 0; ntries < 1000; ntries++) { 4719 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4720 break; 4721 DELAY(10); 4722 } 4723 4724 if (ntries == 1000) { 4725 device_printf(sc->sc_dev, 4726 "timeout waiting for thermal sensor calibration\n"); 4727 return ETIMEDOUT; 4728 } 4729 4730 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4731 return 0; 4732} 4733 4734/* 4735 * The firmware boot code is small and is intended to be copied directly into 4736 * the NIC internal memory (no DMA transfer). 4737 */ 4738static int 4739wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 4740{ 4741 int error, ntries; 4742 4743 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4744 4745 size /= sizeof (uint32_t); 4746 4747 if ((error = wpi_nic_lock(sc)) != 0) 4748 return error; 4749 4750 /* Copy microcode image into NIC memory. */ 4751 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4752 (const uint32_t *)ucode, size); 4753 4754 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4755 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4756 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4757 4758 /* Start boot load now. */ 4759 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4760 4761 /* Wait for transfer to complete. */ 4762 for (ntries = 0; ntries < 1000; ntries++) { 4763 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4764 DPRINTF(sc, WPI_DEBUG_HW, 4765 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4766 WPI_FH_TX_STATUS_IDLE(6), 4767 status & WPI_FH_TX_STATUS_IDLE(6)); 4768 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4769 DPRINTF(sc, WPI_DEBUG_HW, 4770 "Status Match! - ntries = %d\n", ntries); 4771 break; 4772 } 4773 DELAY(10); 4774 } 4775 if (ntries == 1000) { 4776 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4777 __func__); 4778 wpi_nic_unlock(sc); 4779 return ETIMEDOUT; 4780 } 4781 4782 /* Enable boot after power up. */ 4783 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4784 4785 wpi_nic_unlock(sc); 4786 return 0; 4787} 4788 4789static int 4790wpi_load_firmware(struct wpi_softc *sc) 4791{ 4792 struct wpi_fw_info *fw = &sc->fw; 4793 struct wpi_dma_info *dma = &sc->fw_dma; 4794 int error; 4795 4796 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4797 4798 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4799 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4800 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4801 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4802 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4803 4804 /* Tell adapter where to find initialization sections. */ 4805 if ((error = wpi_nic_lock(sc)) != 0) 4806 return error; 4807 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4808 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4809 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4810 dma->paddr + WPI_FW_DATA_MAXSZ); 4811 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4812 wpi_nic_unlock(sc); 4813 4814 /* Load firmware boot code. */ 4815 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4816 if (error != 0) { 4817 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4818 __func__); 4819 return error; 4820 } 4821 4822 /* Now press "execute". */ 4823 WPI_WRITE(sc, WPI_RESET, 0); 4824 4825 /* Wait at most one second for first alive notification. */ 4826 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4827 device_printf(sc->sc_dev, 4828 "%s: timeout waiting for adapter to initialize, error %d\n", 4829 __func__, error); 4830 return error; 4831 } 4832 4833 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4834 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4835 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4836 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4837 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4838 4839 /* Tell adapter where to find runtime sections. */ 4840 if ((error = wpi_nic_lock(sc)) != 0) 4841 return error; 4842 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4843 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 4844 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4845 dma->paddr + WPI_FW_DATA_MAXSZ); 4846 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 4847 WPI_FW_UPDATED | fw->main.textsz); 4848 wpi_nic_unlock(sc); 4849 4850 return 0; 4851} 4852 4853static int 4854wpi_read_firmware(struct wpi_softc *sc) 4855{ 4856 const struct firmware *fp; 4857 struct wpi_fw_info *fw = &sc->fw; 4858 const struct wpi_firmware_hdr *hdr; 4859 int error; 4860 4861 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4862 4863 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4864 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 4865 4866 WPI_UNLOCK(sc); 4867 fp = firmware_get(WPI_FW_NAME); 4868 WPI_LOCK(sc); 4869 4870 if (fp == NULL) { 4871 device_printf(sc->sc_dev, 4872 "could not load firmware image '%s'\n", WPI_FW_NAME); 4873 return EINVAL; 4874 } 4875 4876 sc->fw_fp = fp; 4877 4878 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 4879 device_printf(sc->sc_dev, 4880 "firmware file too short: %zu bytes\n", fp->datasize); 4881 error = EINVAL; 4882 goto fail; 4883 } 4884 4885 fw->size = fp->datasize; 4886 fw->data = (const uint8_t *)fp->data; 4887 4888 /* Extract firmware header information. */ 4889 hdr = (const struct wpi_firmware_hdr *)fw->data; 4890 4891 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 4892 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 4893 4894 fw->main.textsz = le32toh(hdr->rtextsz); 4895 fw->main.datasz = le32toh(hdr->rdatasz); 4896 fw->init.textsz = le32toh(hdr->itextsz); 4897 fw->init.datasz = le32toh(hdr->idatasz); 4898 fw->boot.textsz = le32toh(hdr->btextsz); 4899 fw->boot.datasz = 0; 4900 4901 /* Sanity-check firmware header. */ 4902 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 4903 fw->main.datasz > WPI_FW_DATA_MAXSZ || 4904 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 4905 fw->init.datasz > WPI_FW_DATA_MAXSZ || 4906 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 4907 (fw->boot.textsz & 3) != 0) { 4908 device_printf(sc->sc_dev, "invalid firmware header\n"); 4909 error = EINVAL; 4910 goto fail; 4911 } 4912 4913 /* Check that all firmware sections fit. */ 4914 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 4915 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 4916 device_printf(sc->sc_dev, 4917 "firmware file too short: %zu bytes\n", fw->size); 4918 error = EINVAL; 4919 goto fail; 4920 } 4921 4922 /* Get pointers to firmware sections. */ 4923 fw->main.text = (const uint8_t *)(hdr + 1); 4924 fw->main.data = fw->main.text + fw->main.textsz; 4925 fw->init.text = fw->main.data + fw->main.datasz; 4926 fw->init.data = fw->init.text + fw->init.textsz; 4927 fw->boot.text = fw->init.data + fw->init.datasz; 4928 4929 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4930 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 4931 "runtime (text: %u, data: %u) init (text: %u, data %u) " 4932 "boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver), 4933 fw->main.textsz, fw->main.datasz, 4934 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 4935 4936 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 4937 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 4938 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 4939 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 4940 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 4941 4942 return 0; 4943 4944fail: wpi_unload_firmware(sc); 4945 return error; 4946} 4947 4948/** 4949 * Free the referenced firmware image 4950 */ 4951static void 4952wpi_unload_firmware(struct wpi_softc *sc) 4953{ 4954 if (sc->fw_fp != NULL) { 4955 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 4956 sc->fw_fp = NULL; 4957 } 4958} 4959 4960static int 4961wpi_clock_wait(struct wpi_softc *sc) 4962{ 4963 int ntries; 4964 4965 /* Set "initialization complete" bit. */ 4966 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4967 4968 /* Wait for clock stabilization. */ 4969 for (ntries = 0; ntries < 2500; ntries++) { 4970 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 4971 return 0; 4972 DELAY(100); 4973 } 4974 device_printf(sc->sc_dev, 4975 "%s: timeout waiting for clock stabilization\n", __func__); 4976 4977 return ETIMEDOUT; 4978} 4979 4980static int 4981wpi_apm_init(struct wpi_softc *sc) 4982{ 4983 uint32_t reg; 4984 int error; 4985 4986 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4987 4988 /* Disable L0s exit timer (NMI bug workaround). */ 4989 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 4990 /* Don't wait for ICH L0s (ICH bug workaround). */ 4991 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 4992 4993 /* Set FH wait threshold to max (HW bug under stress workaround). */ 4994 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 4995 4996 /* Retrieve PCIe Active State Power Management (ASPM). */ 4997 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 4998 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 4999 if (reg & 0x02) /* L1 Entry enabled. */ 5000 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 5001 else 5002 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 5003 5004 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 5005 5006 /* Wait for clock stabilization before accessing prph. */ 5007 if ((error = wpi_clock_wait(sc)) != 0) 5008 return error; 5009 5010 if ((error = wpi_nic_lock(sc)) != 0) 5011 return error; 5012 /* Cleanup. */ 5013 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 0x00000400); 5014 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000200); 5015 5016 /* Enable DMA and BSM (Bootstrap State Machine). */ 5017 wpi_prph_write(sc, WPI_APMG_CLK_EN, 5018 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 5019 DELAY(20); 5020 /* Disable L1-Active. */ 5021 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 5022 wpi_nic_unlock(sc); 5023 5024 return 0; 5025} 5026 5027static void 5028wpi_apm_stop_master(struct wpi_softc *sc) 5029{ 5030 int ntries; 5031 5032 /* Stop busmaster DMA activity. */ 5033 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 5034 5035 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 5036 WPI_GP_CNTRL_MAC_PS) 5037 return; /* Already asleep. */ 5038 5039 for (ntries = 0; ntries < 100; ntries++) { 5040 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 5041 return; 5042 DELAY(10); 5043 } 5044 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", 5045 __func__); 5046} 5047 5048static void 5049wpi_apm_stop(struct wpi_softc *sc) 5050{ 5051 wpi_apm_stop_master(sc); 5052 5053 /* Reset the entire device. */ 5054 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 5055 DELAY(10); 5056 /* Clear "initialization complete" bit. */ 5057 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 5058} 5059 5060static void 5061wpi_nic_config(struct wpi_softc *sc) 5062{ 5063 uint32_t rev; 5064 5065 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5066 5067 /* voodoo from the Linux "driver".. */ 5068 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 5069 if ((rev & 0xc0) == 0x40) 5070 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 5071 else if (!(rev & 0x80)) 5072 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 5073 5074 if (sc->cap == 0x80) 5075 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 5076 5077 if ((sc->rev & 0xf0) == 0xd0) 5078 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 5079 else 5080 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 5081 5082 if (sc->type > 1) 5083 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 5084} 5085 5086static int 5087wpi_hw_init(struct wpi_softc *sc) 5088{ 5089 int chnl, ntries, error; 5090 5091 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 5092 5093 /* Clear pending interrupts. */ 5094 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5095 5096 if ((error = wpi_apm_init(sc)) != 0) { 5097 device_printf(sc->sc_dev, 5098 "%s: could not power ON adapter, error %d\n", __func__, 5099 error); 5100 return error; 5101 } 5102 5103 /* Select VMAIN power source. */ 5104 if ((error = wpi_nic_lock(sc)) != 0) 5105 return error; 5106 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 5107 wpi_nic_unlock(sc); 5108 /* Spin until VMAIN gets selected. */ 5109 for (ntries = 0; ntries < 5000; ntries++) { 5110 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 5111 break; 5112 DELAY(10); 5113 } 5114 if (ntries == 5000) { 5115 device_printf(sc->sc_dev, "timeout selecting power source\n"); 5116 return ETIMEDOUT; 5117 } 5118 5119 /* Perform adapter initialization. */ 5120 wpi_nic_config(sc); 5121 5122 /* Initialize RX ring. */ 5123 if ((error = wpi_nic_lock(sc)) != 0) 5124 return error; 5125 /* Set physical address of RX ring. */ 5126 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 5127 /* Set physical address of RX read pointer. */ 5128 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 5129 offsetof(struct wpi_shared, next)); 5130 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 5131 /* Enable RX. */ 5132 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 5133 WPI_FH_RX_CONFIG_DMA_ENA | 5134 WPI_FH_RX_CONFIG_RDRBD_ENA | 5135 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 5136 WPI_FH_RX_CONFIG_MAXFRAG | 5137 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 5138 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 5139 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 5140 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 5141 wpi_nic_unlock(sc); 5142 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 5143 5144 /* Initialize TX rings. */ 5145 if ((error = wpi_nic_lock(sc)) != 0) 5146 return error; 5147 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 5148 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 5149 /* Enable all 6 TX rings. */ 5150 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 5151 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 5152 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 5153 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 5154 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 5155 /* Set physical address of TX rings. */ 5156 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 5157 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 5158 5159 /* Enable all DMA channels. */ 5160 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5161 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 5162 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 5163 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 5164 } 5165 wpi_nic_unlock(sc); 5166 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 5167 5168 /* Clear "radio off" and "commands blocked" bits. */ 5169 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5170 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 5171 5172 /* Clear pending interrupts. */ 5173 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5174 /* Enable interrupts. */ 5175 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 5176 5177 /* _Really_ make sure "radio off" bit is cleared! */ 5178 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5179 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5180 5181 if ((error = wpi_load_firmware(sc)) != 0) { 5182 device_printf(sc->sc_dev, 5183 "%s: could not load firmware, error %d\n", __func__, 5184 error); 5185 return error; 5186 } 5187 /* Wait at most one second for firmware alive notification. */ 5188 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 5189 device_printf(sc->sc_dev, 5190 "%s: timeout waiting for adapter to initialize, error %d\n", 5191 __func__, error); 5192 return error; 5193 } 5194 5195 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5196 5197 /* Do post-firmware initialization. */ 5198 return wpi_post_alive(sc); 5199} 5200 5201static void 5202wpi_hw_stop(struct wpi_softc *sc) 5203{ 5204 int chnl, qid, ntries; 5205 5206 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5207 5208 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 5209 wpi_nic_lock(sc); 5210 5211 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 5212 5213 /* Disable interrupts. */ 5214 WPI_WRITE(sc, WPI_INT_MASK, 0); 5215 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5216 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 5217 5218 /* Make sure we no longer hold the NIC lock. */ 5219 wpi_nic_unlock(sc); 5220 5221 if (wpi_nic_lock(sc) == 0) { 5222 /* Stop TX scheduler. */ 5223 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 5224 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 5225 5226 /* Stop all DMA channels. */ 5227 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5228 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 5229 for (ntries = 0; ntries < 200; ntries++) { 5230 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 5231 WPI_FH_TX_STATUS_IDLE(chnl)) 5232 break; 5233 DELAY(10); 5234 } 5235 } 5236 wpi_nic_unlock(sc); 5237 } 5238 5239 /* Stop RX ring. */ 5240 wpi_reset_rx_ring(sc); 5241 5242 /* Reset all TX rings. */ 5243 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 5244 wpi_reset_tx_ring(sc, &sc->txq[qid]); 5245 5246 if (wpi_nic_lock(sc) == 0) { 5247 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 5248 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 5249 wpi_nic_unlock(sc); 5250 } 5251 DELAY(5); 5252 /* Power OFF adapter. */ 5253 wpi_apm_stop(sc); 5254} 5255 5256static void 5257wpi_radio_on(void *arg0, int pending) 5258{ 5259 struct wpi_softc *sc = arg0; 5260 struct ifnet *ifp = sc->sc_ifp; 5261 struct ieee80211com *ic = ifp->if_l2com; 5262 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5263 5264 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 5265 5266 if (vap != NULL) { 5267 wpi_init(sc); 5268 ieee80211_init(vap); 5269 } 5270 5271 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) { 5272 WPI_LOCK(sc); 5273 callout_stop(&sc->watchdog_rfkill); 5274 WPI_UNLOCK(sc); 5275 } 5276} 5277 5278static void 5279wpi_radio_off(void *arg0, int pending) 5280{ 5281 struct wpi_softc *sc = arg0; 5282 struct ifnet *ifp = sc->sc_ifp; 5283 struct ieee80211com *ic = ifp->if_l2com; 5284 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5285 5286 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 5287 5288 wpi_stop(sc); 5289 if (vap != NULL) 5290 ieee80211_stop(vap); 5291 5292 WPI_LOCK(sc); 5293 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 5294 WPI_UNLOCK(sc); 5295} 5296 5297static void 5298wpi_init(void *arg) 5299{ 5300 struct wpi_softc *sc = arg; 5301 struct ifnet *ifp = sc->sc_ifp; 5302 struct ieee80211com *ic = ifp->if_l2com; 5303 int error; 5304 5305 WPI_LOCK(sc); 5306 5307 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 5308 5309 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 5310 goto end; 5311 5312 /* Check that the radio is not disabled by hardware switch. */ 5313 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 5314 device_printf(sc->sc_dev, 5315 "RF switch: radio disabled (%s)\n", __func__); 5316 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 5317 sc); 5318 goto end; 5319 } 5320 5321 /* Read firmware images from the filesystem. */ 5322 if ((error = wpi_read_firmware(sc)) != 0) { 5323 device_printf(sc->sc_dev, 5324 "%s: could not read firmware, error %d\n", __func__, 5325 error); 5326 goto fail; 5327 } 5328 5329 /* Initialize hardware and upload firmware. */ 5330 error = wpi_hw_init(sc); 5331 wpi_unload_firmware(sc); 5332 if (error != 0) { 5333 device_printf(sc->sc_dev, 5334 "%s: could not initialize hardware, error %d\n", __func__, 5335 error); 5336 goto fail; 5337 } 5338 5339 /* Configure adapter now that it is ready. */ 5340 sc->txq_active = 1; 5341 if ((error = wpi_config(sc)) != 0) { 5342 device_printf(sc->sc_dev, 5343 "%s: could not configure device, error %d\n", __func__, 5344 error); 5345 goto fail; 5346 } 5347 5348 IF_LOCK(&ifp->if_snd); 5349 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 5350 ifp->if_drv_flags |= IFF_DRV_RUNNING; 5351 IF_UNLOCK(&ifp->if_snd); 5352 5353 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5354 5355 WPI_UNLOCK(sc); 5356 5357 ieee80211_start_all(ic); 5358 5359 return; 5360 5361fail: wpi_stop_locked(sc); 5362end: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 5363 WPI_UNLOCK(sc); 5364} 5365 5366static void 5367wpi_stop_locked(struct wpi_softc *sc) 5368{ 5369 struct ifnet *ifp = sc->sc_ifp; 5370 5371 WPI_LOCK_ASSERT(sc); 5372 5373 WPI_TXQ_LOCK(sc); 5374 sc->txq_active = 0; 5375 WPI_TXQ_UNLOCK(sc); 5376 5377 WPI_TXQ_STATE_LOCK(sc); 5378 callout_stop(&sc->tx_timeout); 5379 WPI_TXQ_STATE_UNLOCK(sc); 5380 5381 WPI_RXON_LOCK(sc); 5382 callout_stop(&sc->scan_timeout); 5383 callout_stop(&sc->calib_to); 5384 WPI_RXON_UNLOCK(sc); 5385 5386 IF_LOCK(&ifp->if_snd); 5387 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 5388 IF_UNLOCK(&ifp->if_snd); 5389 5390 /* Power OFF hardware. */ 5391 wpi_hw_stop(sc); 5392} 5393 5394static void 5395wpi_stop(struct wpi_softc *sc) 5396{ 5397 WPI_LOCK(sc); 5398 wpi_stop_locked(sc); 5399 WPI_UNLOCK(sc); 5400} 5401 5402/* 5403 * Callback from net80211 to start a scan. 5404 */ 5405static void 5406wpi_scan_start(struct ieee80211com *ic) 5407{ 5408 struct wpi_softc *sc = ic->ic_ifp->if_softc; 5409 5410 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 5411} 5412 5413/* 5414 * Callback from net80211 to terminate a scan. 5415 */ 5416static void 5417wpi_scan_end(struct ieee80211com *ic) 5418{ 5419 struct ifnet *ifp = ic->ic_ifp; 5420 struct wpi_softc *sc = ifp->if_softc; 5421 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5422 5423 if (vap->iv_state == IEEE80211_S_RUN) 5424 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 5425} 5426 5427/** 5428 * Called by the net80211 framework to indicate to the driver 5429 * that the channel should be changed 5430 */ 5431static void 5432wpi_set_channel(struct ieee80211com *ic) 5433{ 5434 const struct ieee80211_channel *c = ic->ic_curchan; 5435 struct ifnet *ifp = ic->ic_ifp; 5436 struct wpi_softc *sc = ifp->if_softc; 5437 int error; 5438 5439 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5440 5441 WPI_LOCK(sc); 5442 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 5443 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 5444 WPI_UNLOCK(sc); 5445 WPI_TX_LOCK(sc); 5446 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 5447 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 5448 WPI_TX_UNLOCK(sc); 5449 5450 /* 5451 * Only need to set the channel in Monitor mode. AP scanning and auth 5452 * are already taken care of by their respective firmware commands. 5453 */ 5454 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 5455 WPI_RXON_LOCK(sc); 5456 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 5457 if (IEEE80211_IS_CHAN_2GHZ(c)) { 5458 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 5459 WPI_RXON_24GHZ); 5460 } else { 5461 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 5462 WPI_RXON_24GHZ); 5463 } 5464 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) 5465 device_printf(sc->sc_dev, 5466 "%s: error %d setting channel\n", __func__, 5467 error); 5468 WPI_RXON_UNLOCK(sc); 5469 } 5470} 5471 5472/** 5473 * Called by net80211 to indicate that we need to scan the current 5474 * channel. The channel is previously be set via the wpi_set_channel 5475 * callback. 5476 */ 5477static void 5478wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 5479{ 5480 struct ieee80211vap *vap = ss->ss_vap; 5481 struct ieee80211com *ic = vap->iv_ic; 5482 struct wpi_softc *sc = ic->ic_ifp->if_softc; 5483 int error; 5484 5485 WPI_RXON_LOCK(sc); 5486 error = wpi_scan(sc, ic->ic_curchan); 5487 WPI_RXON_UNLOCK(sc); 5488 if (error != 0) 5489 ieee80211_cancel_scan(vap); 5490} 5491 5492/** 5493 * Called by the net80211 framework to indicate 5494 * the minimum dwell time has been met, terminate the scan. 5495 * We don't actually terminate the scan as the firmware will notify 5496 * us when it's finished and we have no way to interrupt it. 5497 */ 5498static void 5499wpi_scan_mindwell(struct ieee80211_scan_state *ss) 5500{ 5501 /* NB: don't try to abort scan; wait for firmware to finish */ 5502} 5503 5504static void 5505wpi_hw_reset(void *arg, int pending) 5506{ 5507 struct wpi_softc *sc = arg; 5508 struct ifnet *ifp = sc->sc_ifp; 5509 struct ieee80211com *ic = ifp->if_l2com; 5510 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5511 5512 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5513 5514 if (vap != NULL && (ic->ic_flags & IEEE80211_F_SCAN)) 5515 ieee80211_cancel_scan(vap); 5516 5517 wpi_stop(sc); 5518 if (vap != NULL) 5519 ieee80211_stop(vap); 5520 wpi_init(sc); 5521 if (vap != NULL) 5522 ieee80211_init(vap); 5523} 5524