if_wpi.c revision 280102
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 280102 2015-03-15 21:12:57Z 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_locked(struct ifnet *); 202static void wpi_start_task(void *, int); 203static void wpi_watchdog_rfkill(void *); 204static void wpi_watchdog(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 *, struct ieee80211_channel *, 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 int wpi_scan(struct wpi_softc *, struct ieee80211_channel *); 232static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 233static int wpi_config_beacon(struct wpi_vap *); 234static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 235static void wpi_update_beacon(struct ieee80211vap *, int); 236static void wpi_newassoc(struct ieee80211_node *, int); 237static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 238static int wpi_load_key(struct ieee80211_node *, 239 const struct ieee80211_key *); 240static void wpi_load_key_cb(void *, struct ieee80211_node *); 241static int wpi_set_global_keys(struct ieee80211_node *); 242static int wpi_del_key(struct ieee80211_node *, 243 const struct ieee80211_key *); 244static void wpi_del_key_cb(void *, struct ieee80211_node *); 245static int wpi_process_key(struct ieee80211vap *, 246 const struct ieee80211_key *, int); 247static int wpi_key_set(struct ieee80211vap *, 248 const struct ieee80211_key *, 249 const uint8_t mac[IEEE80211_ADDR_LEN]); 250static int wpi_key_delete(struct ieee80211vap *, 251 const struct ieee80211_key *); 252static int wpi_post_alive(struct wpi_softc *); 253static int wpi_load_bootcode(struct wpi_softc *, const uint8_t *, int); 254static int wpi_load_firmware(struct wpi_softc *); 255static int wpi_read_firmware(struct wpi_softc *); 256static void wpi_unload_firmware(struct wpi_softc *); 257static int wpi_clock_wait(struct wpi_softc *); 258static int wpi_apm_init(struct wpi_softc *); 259static void wpi_apm_stop_master(struct wpi_softc *); 260static void wpi_apm_stop(struct wpi_softc *); 261static void wpi_nic_config(struct wpi_softc *); 262static int wpi_hw_init(struct wpi_softc *); 263static void wpi_hw_stop(struct wpi_softc *); 264static void wpi_radio_on(void *, int); 265static void wpi_radio_off(void *, int); 266static void wpi_init(void *); 267static void wpi_stop_locked(struct wpi_softc *); 268static void wpi_stop(struct wpi_softc *); 269static void wpi_scan_start(struct ieee80211com *); 270static void wpi_scan_end(struct ieee80211com *); 271static void wpi_set_channel(struct ieee80211com *); 272static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 273static void wpi_scan_mindwell(struct ieee80211_scan_state *); 274static void wpi_hw_reset(void *, int); 275 276static device_method_t wpi_methods[] = { 277 /* Device interface */ 278 DEVMETHOD(device_probe, wpi_probe), 279 DEVMETHOD(device_attach, wpi_attach), 280 DEVMETHOD(device_detach, wpi_detach), 281 DEVMETHOD(device_shutdown, wpi_shutdown), 282 DEVMETHOD(device_suspend, wpi_suspend), 283 DEVMETHOD(device_resume, wpi_resume), 284 285 DEVMETHOD_END 286}; 287 288static driver_t wpi_driver = { 289 "wpi", 290 wpi_methods, 291 sizeof (struct wpi_softc) 292}; 293static devclass_t wpi_devclass; 294 295DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 296 297MODULE_VERSION(wpi, 1); 298 299MODULE_DEPEND(wpi, pci, 1, 1, 1); 300MODULE_DEPEND(wpi, wlan, 1, 1, 1); 301MODULE_DEPEND(wpi, firmware, 1, 1, 1); 302 303static int 304wpi_probe(device_t dev) 305{ 306 const struct wpi_ident *ident; 307 308 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 309 if (pci_get_vendor(dev) == ident->vendor && 310 pci_get_device(dev) == ident->device) { 311 device_set_desc(dev, ident->name); 312 return (BUS_PROBE_DEFAULT); 313 } 314 } 315 return ENXIO; 316} 317 318static int 319wpi_attach(device_t dev) 320{ 321 struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev); 322 struct ieee80211com *ic; 323 struct ifnet *ifp; 324 int i, error, rid; 325#ifdef WPI_DEBUG 326 int supportsa = 1; 327 const struct wpi_ident *ident; 328#endif 329 uint8_t macaddr[IEEE80211_ADDR_LEN]; 330 331 sc->sc_dev = dev; 332 333#ifdef WPI_DEBUG 334 error = resource_int_value(device_get_name(sc->sc_dev), 335 device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug)); 336 if (error != 0) 337 sc->sc_debug = 0; 338#else 339 sc->sc_debug = 0; 340#endif 341 342 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 343 344 /* 345 * Get the offset of the PCI Express Capability Structure in PCI 346 * Configuration Space. 347 */ 348 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 349 if (error != 0) { 350 device_printf(dev, "PCIe capability structure not found!\n"); 351 return error; 352 } 353 354 /* 355 * Some card's only support 802.11b/g not a, check to see if 356 * this is one such card. A 0x0 in the subdevice table indicates 357 * the entire subdevice range is to be ignored. 358 */ 359#ifdef WPI_DEBUG 360 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 361 if (ident->subdevice && 362 pci_get_subdevice(dev) == ident->subdevice) { 363 supportsa = 0; 364 break; 365 } 366 } 367#endif 368 369 /* Clear device-specific "PCI retry timeout" register (41h). */ 370 pci_write_config(dev, 0x41, 0, 1); 371 372 /* Enable bus-mastering. */ 373 pci_enable_busmaster(dev); 374 375 rid = PCIR_BAR(0); 376 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 377 RF_ACTIVE); 378 if (sc->mem == NULL) { 379 device_printf(dev, "can't map mem space\n"); 380 return ENOMEM; 381 } 382 sc->sc_st = rman_get_bustag(sc->mem); 383 sc->sc_sh = rman_get_bushandle(sc->mem); 384 385 i = 1; 386 rid = 0; 387 if (pci_alloc_msi(dev, &i) == 0) 388 rid = 1; 389 /* Install interrupt handler. */ 390 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 391 (rid != 0 ? 0 : RF_SHAREABLE)); 392 if (sc->irq == NULL) { 393 device_printf(dev, "can't map interrupt\n"); 394 error = ENOMEM; 395 goto fail; 396 } 397 398 WPI_LOCK_INIT(sc); 399 WPI_NT_LOCK_INIT(sc); 400 WPI_TXQ_LOCK_INIT(sc); 401 402 /* Allocate DMA memory for firmware transfers. */ 403 if ((error = wpi_alloc_fwmem(sc)) != 0) { 404 device_printf(dev, 405 "could not allocate memory for firmware, error %d\n", 406 error); 407 goto fail; 408 } 409 410 /* Allocate shared page. */ 411 if ((error = wpi_alloc_shared(sc)) != 0) { 412 device_printf(dev, "could not allocate shared page\n"); 413 goto fail; 414 } 415 416 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 417 for (i = 0; i < WPI_NTXQUEUES; i++) { 418 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 419 device_printf(dev, 420 "could not allocate TX ring %d, error %d\n", i, 421 error); 422 goto fail; 423 } 424 } 425 426 /* Allocate RX ring. */ 427 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 428 device_printf(dev, "could not allocate RX ring, error %d\n", 429 error); 430 goto fail; 431 } 432 433 /* Clear pending interrupts. */ 434 WPI_WRITE(sc, WPI_INT, 0xffffffff); 435 436 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 437 if (ifp == NULL) { 438 device_printf(dev, "can not allocate ifnet structure\n"); 439 goto fail; 440 } 441 442 ic = ifp->if_l2com; 443 ic->ic_ifp = ifp; 444 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 445 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 446 447 /* Set device capabilities. */ 448 ic->ic_caps = 449 IEEE80211_C_STA /* station mode supported */ 450 | IEEE80211_C_IBSS /* IBSS mode supported */ 451 | IEEE80211_C_MONITOR /* monitor mode supported */ 452 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 453 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 454 | IEEE80211_C_TXPMGT /* tx power management */ 455 | IEEE80211_C_SHSLOT /* short slot time supported */ 456 | IEEE80211_C_WPA /* 802.11i */ 457 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 458#if 0 459 | IEEE80211_C_HOSTAP /* Host access point mode */ 460#endif 461 | IEEE80211_C_WME /* 802.11e */ 462 | IEEE80211_C_PMGT /* Station-side power mgmt */ 463 ; 464 465 ic->ic_cryptocaps = 466 IEEE80211_CRYPTO_AES_CCM; 467 468 /* 469 * Read in the eeprom and also setup the channels for 470 * net80211. We don't set the rates as net80211 does this for us 471 */ 472 if ((error = wpi_read_eeprom(sc, macaddr)) != 0) { 473 device_printf(dev, "could not read EEPROM, error %d\n", 474 error); 475 goto fail; 476 } 477 478#ifdef WPI_DEBUG 479 if (bootverbose) { 480 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", 481 sc->domain); 482 device_printf(sc->sc_dev, "Hardware Type: %c\n", 483 sc->type > 1 ? 'B': '?'); 484 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 485 ((sc->rev & 0xf0) == 0xd0) ? 'D': '?'); 486 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 487 supportsa ? "does" : "does not"); 488 489 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must 490 check what sc->rev really represents - benjsc 20070615 */ 491 } 492#endif 493 494 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 495 ifp->if_softc = sc; 496 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 497 ifp->if_init = wpi_init; 498 ifp->if_ioctl = wpi_ioctl; 499 ifp->if_start = wpi_start; 500 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 501 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 502 IFQ_SET_READY(&ifp->if_snd); 503 504 ieee80211_ifattach(ic, macaddr); 505 ic->ic_vap_create = wpi_vap_create; 506 ic->ic_vap_delete = wpi_vap_delete; 507 ic->ic_raw_xmit = wpi_raw_xmit; 508 ic->ic_node_alloc = wpi_node_alloc; 509 sc->sc_node_free = ic->ic_node_free; 510 ic->ic_node_free = wpi_node_free; 511 ic->ic_wme.wme_update = wpi_updateedca; 512 ic->ic_update_promisc = wpi_update_promisc; 513 ic->ic_update_mcast = wpi_update_mcast; 514 ic->ic_newassoc = wpi_newassoc; 515 ic->ic_scan_start = wpi_scan_start; 516 ic->ic_scan_end = wpi_scan_end; 517 ic->ic_set_channel = wpi_set_channel; 518 sc->sc_scan_curchan = ic->ic_scan_curchan; 519 ic->ic_scan_curchan = wpi_scan_curchan; 520 ic->ic_scan_mindwell = wpi_scan_mindwell; 521 ic->ic_setregdomain = wpi_setregdomain; 522 523 wpi_radiotap_attach(sc); 524 525 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 526 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 527 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 528 TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc); 529 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 530 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 531 TASK_INIT(&sc->sc_start_task, 0, wpi_start_task, sc); 532 533 wpi_sysctlattach(sc); 534 535 /* 536 * Hook our interrupt after all initialization is complete. 537 */ 538 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 539 NULL, wpi_intr, sc, &sc->sc_ih); 540 if (error != 0) { 541 device_printf(dev, "can't establish interrupt, error %d\n", 542 error); 543 goto fail; 544 } 545 546 if (bootverbose) 547 ieee80211_announce(ic); 548 549#ifdef WPI_DEBUG 550 if (sc->sc_debug & WPI_DEBUG_HW) 551 ieee80211_announce_channels(ic); 552#endif 553 554 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 555 return 0; 556 557fail: wpi_detach(dev); 558 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 559 return error; 560} 561 562/* 563 * Attach the interface to 802.11 radiotap. 564 */ 565static void 566wpi_radiotap_attach(struct wpi_softc *sc) 567{ 568 struct ifnet *ifp = sc->sc_ifp; 569 struct ieee80211com *ic = ifp->if_l2com; 570 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 571 ieee80211_radiotap_attach(ic, 572 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 573 WPI_TX_RADIOTAP_PRESENT, 574 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 575 WPI_RX_RADIOTAP_PRESENT); 576 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 577} 578 579static void 580wpi_sysctlattach(struct wpi_softc *sc) 581{ 582#ifdef WPI_DEBUG 583 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 584 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 585 586 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 587 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 588 "control debugging printfs"); 589#endif 590} 591 592static void 593wpi_init_beacon(struct wpi_vap *wvp) 594{ 595 struct wpi_buf *bcn = &wvp->wv_bcbuf; 596 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 597 598 cmd->id = WPI_ID_BROADCAST; 599 cmd->ofdm_mask = 0xff; 600 cmd->cck_mask = 0x0f; 601 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 602 cmd->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 603 604 bcn->code = WPI_CMD_SET_BEACON; 605 bcn->ac = WPI_CMD_QUEUE_NUM; 606 bcn->size = sizeof(struct wpi_cmd_beacon); 607} 608 609static struct ieee80211vap * 610wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 611 enum ieee80211_opmode opmode, int flags, 612 const uint8_t bssid[IEEE80211_ADDR_LEN], 613 const uint8_t mac[IEEE80211_ADDR_LEN]) 614{ 615 struct wpi_vap *wvp; 616 struct ieee80211vap *vap; 617 618 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 619 return NULL; 620 621 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 622 M_80211_VAP, M_NOWAIT | M_ZERO); 623 if (wvp == NULL) 624 return NULL; 625 vap = &wvp->wv_vap; 626 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 627 628 if (opmode == IEEE80211_M_IBSS) { 629 WPI_VAP_LOCK_INIT(wvp); 630 wpi_init_beacon(wvp); 631 } 632 633 /* Override with driver methods. */ 634 vap->iv_key_set = wpi_key_set; 635 vap->iv_key_delete = wpi_key_delete; 636 wvp->wv_newstate = vap->iv_newstate; 637 vap->iv_newstate = wpi_newstate; 638 vap->iv_update_beacon = wpi_update_beacon; 639 640 ieee80211_ratectl_init(vap); 641 /* Complete setup. */ 642 ieee80211_vap_attach(vap, ieee80211_media_change, 643 ieee80211_media_status); 644 ic->ic_opmode = opmode; 645 return vap; 646} 647 648static void 649wpi_vap_delete(struct ieee80211vap *vap) 650{ 651 struct wpi_vap *wvp = WPI_VAP(vap); 652 struct wpi_buf *bcn = &wvp->wv_bcbuf; 653 enum ieee80211_opmode opmode = vap->iv_opmode; 654 655 ieee80211_ratectl_deinit(vap); 656 ieee80211_vap_detach(vap); 657 658 if (opmode == IEEE80211_M_IBSS) { 659 if (bcn->m != NULL) 660 m_freem(bcn->m); 661 662 WPI_VAP_LOCK_DESTROY(wvp); 663 } 664 665 free(wvp, M_80211_VAP); 666} 667 668static int 669wpi_detach(device_t dev) 670{ 671 struct wpi_softc *sc = device_get_softc(dev); 672 struct ifnet *ifp = sc->sc_ifp; 673 struct ieee80211com *ic; 674 int qid; 675 676 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 677 678 if (ifp != NULL) { 679 ic = ifp->if_l2com; 680 681 ieee80211_draintask(ic, &sc->sc_reinittask); 682 ieee80211_draintask(ic, &sc->sc_radiooff_task); 683 ieee80211_draintask(ic, &sc->sc_radioon_task); 684 ieee80211_draintask(ic, &sc->sc_start_task); 685 686 wpi_stop(sc); 687 688 callout_drain(&sc->watchdog_to); 689 callout_drain(&sc->watchdog_rfkill); 690 callout_drain(&sc->calib_to); 691 ieee80211_ifdetach(ic); 692 } 693 694 /* Uninstall interrupt handler. */ 695 if (sc->irq != NULL) { 696 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 697 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 698 sc->irq); 699 pci_release_msi(dev); 700 } 701 702 if (sc->txq[0].data_dmat) { 703 /* Free DMA resources. */ 704 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 705 wpi_free_tx_ring(sc, &sc->txq[qid]); 706 707 wpi_free_rx_ring(sc); 708 wpi_free_shared(sc); 709 } 710 711 if (sc->fw_dma.tag) 712 wpi_free_fwmem(sc); 713 714 if (sc->mem != NULL) 715 bus_release_resource(dev, SYS_RES_MEMORY, 716 rman_get_rid(sc->mem), sc->mem); 717 718 if (ifp != NULL) 719 if_free(ifp); 720 721 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 722 WPI_TXQ_LOCK_DESTROY(sc); 723 WPI_NT_LOCK_DESTROY(sc); 724 WPI_LOCK_DESTROY(sc); 725 return 0; 726} 727 728static int 729wpi_shutdown(device_t dev) 730{ 731 struct wpi_softc *sc = device_get_softc(dev); 732 733 wpi_stop(sc); 734 return 0; 735} 736 737static int 738wpi_suspend(device_t dev) 739{ 740 struct wpi_softc *sc = device_get_softc(dev); 741 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 742 743 ieee80211_suspend_all(ic); 744 return 0; 745} 746 747static int 748wpi_resume(device_t dev) 749{ 750 struct wpi_softc *sc = device_get_softc(dev); 751 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 752 753 /* Clear device-specific "PCI retry timeout" register (41h). */ 754 pci_write_config(dev, 0x41, 0, 1); 755 756 ieee80211_resume_all(ic); 757 return 0; 758} 759 760/* 761 * Grab exclusive access to NIC memory. 762 */ 763static int 764wpi_nic_lock(struct wpi_softc *sc) 765{ 766 int ntries; 767 768 /* Request exclusive access to NIC. */ 769 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 770 771 /* Spin until we actually get the lock. */ 772 for (ntries = 0; ntries < 1000; ntries++) { 773 if ((WPI_READ(sc, WPI_GP_CNTRL) & 774 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 775 WPI_GP_CNTRL_MAC_ACCESS_ENA) 776 return 0; 777 DELAY(10); 778 } 779 780 device_printf(sc->sc_dev, "could not lock memory\n"); 781 782 return ETIMEDOUT; 783} 784 785/* 786 * Release lock on NIC memory. 787 */ 788static __inline void 789wpi_nic_unlock(struct wpi_softc *sc) 790{ 791 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 792} 793 794static __inline uint32_t 795wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 796{ 797 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 798 WPI_BARRIER_READ_WRITE(sc); 799 return WPI_READ(sc, WPI_PRPH_RDATA); 800} 801 802static __inline void 803wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 804{ 805 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 806 WPI_BARRIER_WRITE(sc); 807 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 808} 809 810static __inline void 811wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 812{ 813 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 814} 815 816static __inline void 817wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 818{ 819 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 820} 821 822static __inline void 823wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 824 const uint32_t *data, int count) 825{ 826 for (; count > 0; count--, data++, addr += 4) 827 wpi_prph_write(sc, addr, *data); 828} 829 830static __inline uint32_t 831wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 832{ 833 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 834 WPI_BARRIER_READ_WRITE(sc); 835 return WPI_READ(sc, WPI_MEM_RDATA); 836} 837 838static __inline void 839wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 840 int count) 841{ 842 for (; count > 0; count--, addr += 4) 843 *data++ = wpi_mem_read(sc, addr); 844} 845 846static int 847wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 848{ 849 uint8_t *out = data; 850 uint32_t val; 851 int error, ntries; 852 853 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 854 855 if ((error = wpi_nic_lock(sc)) != 0) 856 return error; 857 858 for (; count > 0; count -= 2, addr++) { 859 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 860 for (ntries = 0; ntries < 10; ntries++) { 861 val = WPI_READ(sc, WPI_EEPROM); 862 if (val & WPI_EEPROM_READ_VALID) 863 break; 864 DELAY(5); 865 } 866 if (ntries == 10) { 867 device_printf(sc->sc_dev, 868 "timeout reading ROM at 0x%x\n", addr); 869 return ETIMEDOUT; 870 } 871 *out++= val >> 16; 872 if (count > 1) 873 *out ++= val >> 24; 874 } 875 876 wpi_nic_unlock(sc); 877 878 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 879 880 return 0; 881} 882 883static void 884wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 885{ 886 if (error != 0) 887 return; 888 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 889 *(bus_addr_t *)arg = segs[0].ds_addr; 890} 891 892/* 893 * Allocates a contiguous block of dma memory of the requested size and 894 * alignment. 895 */ 896static int 897wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 898 void **kvap, bus_size_t size, bus_size_t alignment) 899{ 900 int error; 901 902 dma->tag = NULL; 903 dma->size = size; 904 905 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 906 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 907 1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag); 908 if (error != 0) 909 goto fail; 910 911 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 912 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 913 if (error != 0) 914 goto fail; 915 916 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 917 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 918 if (error != 0) 919 goto fail; 920 921 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 922 923 if (kvap != NULL) 924 *kvap = dma->vaddr; 925 926 return 0; 927 928fail: wpi_dma_contig_free(dma); 929 return error; 930} 931 932static void 933wpi_dma_contig_free(struct wpi_dma_info *dma) 934{ 935 if (dma->vaddr != NULL) { 936 bus_dmamap_sync(dma->tag, dma->map, 937 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 938 bus_dmamap_unload(dma->tag, dma->map); 939 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 940 dma->vaddr = NULL; 941 } 942 if (dma->tag != NULL) { 943 bus_dma_tag_destroy(dma->tag); 944 dma->tag = NULL; 945 } 946} 947 948/* 949 * Allocate a shared page between host and NIC. 950 */ 951static int 952wpi_alloc_shared(struct wpi_softc *sc) 953{ 954 /* Shared buffer must be aligned on a 4KB boundary. */ 955 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 956 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 957} 958 959static void 960wpi_free_shared(struct wpi_softc *sc) 961{ 962 wpi_dma_contig_free(&sc->shared_dma); 963} 964 965/* 966 * Allocate DMA-safe memory for firmware transfer. 967 */ 968static int 969wpi_alloc_fwmem(struct wpi_softc *sc) 970{ 971 /* Must be aligned on a 16-byte boundary. */ 972 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 973 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 974} 975 976static void 977wpi_free_fwmem(struct wpi_softc *sc) 978{ 979 wpi_dma_contig_free(&sc->fw_dma); 980} 981 982static int 983wpi_alloc_rx_ring(struct wpi_softc *sc) 984{ 985 struct wpi_rx_ring *ring = &sc->rxq; 986 bus_size_t size; 987 int i, error; 988 989 ring->cur = 0; 990 ring->update = 0; 991 992 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 993 994 /* Allocate RX descriptors (16KB aligned.) */ 995 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 996 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 997 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 998 if (error != 0) { 999 device_printf(sc->sc_dev, 1000 "%s: could not allocate RX ring DMA memory, error %d\n", 1001 __func__, error); 1002 goto fail; 1003 } 1004 1005 /* Create RX buffer DMA tag. */ 1006 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1007 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1008 MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, 1009 &ring->data_dmat); 1010 if (error != 0) { 1011 device_printf(sc->sc_dev, 1012 "%s: could not create RX buf DMA tag, error %d\n", 1013 __func__, error); 1014 goto fail; 1015 } 1016 1017 /* 1018 * Allocate and map RX buffers. 1019 */ 1020 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1021 struct wpi_rx_data *data = &ring->data[i]; 1022 bus_addr_t paddr; 1023 1024 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1025 if (error != 0) { 1026 device_printf(sc->sc_dev, 1027 "%s: could not create RX buf DMA map, error %d\n", 1028 __func__, error); 1029 goto fail; 1030 } 1031 1032 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1033 if (data->m == NULL) { 1034 device_printf(sc->sc_dev, 1035 "%s: could not allocate RX mbuf\n", __func__); 1036 error = ENOBUFS; 1037 goto fail; 1038 } 1039 1040 error = bus_dmamap_load(ring->data_dmat, data->map, 1041 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1042 &paddr, BUS_DMA_NOWAIT); 1043 if (error != 0 && error != EFBIG) { 1044 device_printf(sc->sc_dev, 1045 "%s: can't map mbuf (error %d)\n", __func__, 1046 error); 1047 goto fail; 1048 } 1049 1050 /* Set physical address of RX buffer. */ 1051 ring->desc[i] = htole32(paddr); 1052 } 1053 1054 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1055 BUS_DMASYNC_PREWRITE); 1056 1057 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1058 1059 return 0; 1060 1061fail: wpi_free_rx_ring(sc); 1062 1063 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1064 1065 return error; 1066} 1067 1068static void 1069wpi_update_rx_ring(struct wpi_softc *sc) 1070{ 1071 struct wpi_rx_ring *ring = &sc->rxq; 1072 1073 if (ring->update != 0) { 1074 /* Wait for INT_WAKEUP event. */ 1075 return; 1076 } 1077 1078 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1079 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1080 __func__); 1081 1082 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1083 ring->update = 1; 1084 } else 1085 WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7); 1086} 1087 1088static void 1089wpi_reset_rx_ring(struct wpi_softc *sc) 1090{ 1091 struct wpi_rx_ring *ring = &sc->rxq; 1092 int ntries; 1093 1094 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1095 1096 if (wpi_nic_lock(sc) == 0) { 1097 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1098 for (ntries = 0; ntries < 1000; ntries++) { 1099 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1100 WPI_FH_RX_STATUS_IDLE) 1101 break; 1102 DELAY(10); 1103 } 1104 wpi_nic_unlock(sc); 1105 } 1106 1107 ring->cur = 0; 1108 ring->update = 0; 1109} 1110 1111static void 1112wpi_free_rx_ring(struct wpi_softc *sc) 1113{ 1114 struct wpi_rx_ring *ring = &sc->rxq; 1115 int i; 1116 1117 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1118 1119 wpi_dma_contig_free(&ring->desc_dma); 1120 1121 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1122 struct wpi_rx_data *data = &ring->data[i]; 1123 1124 if (data->m != NULL) { 1125 bus_dmamap_sync(ring->data_dmat, data->map, 1126 BUS_DMASYNC_POSTREAD); 1127 bus_dmamap_unload(ring->data_dmat, data->map); 1128 m_freem(data->m); 1129 data->m = NULL; 1130 } 1131 if (data->map != NULL) 1132 bus_dmamap_destroy(ring->data_dmat, data->map); 1133 } 1134 if (ring->data_dmat != NULL) { 1135 bus_dma_tag_destroy(ring->data_dmat); 1136 ring->data_dmat = NULL; 1137 } 1138} 1139 1140static int 1141wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid) 1142{ 1143 bus_addr_t paddr; 1144 bus_size_t size; 1145 int i, error; 1146 1147 ring->qid = qid; 1148 ring->queued = 0; 1149 ring->cur = 0; 1150 ring->update = 0; 1151 1152 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1153 1154 /* Allocate TX descriptors (16KB aligned.) */ 1155 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1156 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1157 size, WPI_RING_DMA_ALIGN); 1158 if (error != 0) { 1159 device_printf(sc->sc_dev, 1160 "%s: could not allocate TX ring DMA memory, error %d\n", 1161 __func__, error); 1162 goto fail; 1163 } 1164 1165 /* Update shared area with ring physical address. */ 1166 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1167 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1168 BUS_DMASYNC_PREWRITE); 1169 1170 /* 1171 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need 1172 * to allocate commands space for other rings. 1173 * XXX Do we really need to allocate descriptors for other rings? 1174 */ 1175 if (qid > WPI_CMD_QUEUE_NUM) { 1176 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1177 return 0; 1178 } 1179 1180 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1181 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1182 size, 4); 1183 if (error != 0) { 1184 device_printf(sc->sc_dev, 1185 "%s: could not allocate TX cmd DMA memory, error %d\n", 1186 __func__, error); 1187 goto fail; 1188 } 1189 1190 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1191 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1192 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1193 &ring->data_dmat); 1194 if (error != 0) { 1195 device_printf(sc->sc_dev, 1196 "%s: could not create TX buf DMA tag, error %d\n", 1197 __func__, error); 1198 goto fail; 1199 } 1200 1201 paddr = ring->cmd_dma.paddr; 1202 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1203 struct wpi_tx_data *data = &ring->data[i]; 1204 1205 data->cmd_paddr = paddr; 1206 paddr += sizeof (struct wpi_tx_cmd); 1207 1208 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1209 if (error != 0) { 1210 device_printf(sc->sc_dev, 1211 "%s: could not create TX buf DMA map, error %d\n", 1212 __func__, error); 1213 goto fail; 1214 } 1215 } 1216 1217 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1218 1219 return 0; 1220 1221fail: wpi_free_tx_ring(sc, ring); 1222 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1223 return error; 1224} 1225 1226static void 1227wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1228{ 1229 if (ring->update != 0) { 1230 /* Wait for INT_WAKEUP event. */ 1231 return; 1232 } 1233 1234 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1235 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1236 __func__, ring->qid); 1237 1238 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1239 ring->update = 1; 1240 } else 1241 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1242} 1243 1244static void 1245wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1246{ 1247 int i; 1248 1249 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1250 1251 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1252 struct wpi_tx_data *data = &ring->data[i]; 1253 1254 if (data->m != NULL) { 1255 bus_dmamap_sync(ring->data_dmat, data->map, 1256 BUS_DMASYNC_POSTWRITE); 1257 bus_dmamap_unload(ring->data_dmat, data->map); 1258 m_freem(data->m); 1259 data->m = NULL; 1260 } 1261 } 1262 /* Clear TX descriptors. */ 1263 memset(ring->desc, 0, ring->desc_dma.size); 1264 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1265 BUS_DMASYNC_PREWRITE); 1266 sc->qfullmsk &= ~(1 << ring->qid); 1267 ring->queued = 0; 1268 ring->cur = 0; 1269 ring->update = 0; 1270} 1271 1272static void 1273wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1274{ 1275 int i; 1276 1277 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1278 1279 wpi_dma_contig_free(&ring->desc_dma); 1280 wpi_dma_contig_free(&ring->cmd_dma); 1281 1282 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1283 struct wpi_tx_data *data = &ring->data[i]; 1284 1285 if (data->m != NULL) { 1286 bus_dmamap_sync(ring->data_dmat, data->map, 1287 BUS_DMASYNC_POSTWRITE); 1288 bus_dmamap_unload(ring->data_dmat, data->map); 1289 m_freem(data->m); 1290 } 1291 if (data->map != NULL) 1292 bus_dmamap_destroy(ring->data_dmat, data->map); 1293 } 1294 if (ring->data_dmat != NULL) { 1295 bus_dma_tag_destroy(ring->data_dmat); 1296 ring->data_dmat = NULL; 1297 } 1298} 1299 1300/* 1301 * Extract various information from EEPROM. 1302 */ 1303static int 1304wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 1305{ 1306#define WPI_CHK(res) do { \ 1307 if ((error = res) != 0) \ 1308 goto fail; \ 1309} while (0) 1310 int error, i; 1311 1312 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1313 1314 /* Adapter has to be powered on for EEPROM access to work. */ 1315 if ((error = wpi_apm_init(sc)) != 0) { 1316 device_printf(sc->sc_dev, 1317 "%s: could not power ON adapter, error %d\n", __func__, 1318 error); 1319 return error; 1320 } 1321 1322 if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) { 1323 device_printf(sc->sc_dev, "bad EEPROM signature\n"); 1324 error = EIO; 1325 goto fail; 1326 } 1327 /* Clear HW ownership of EEPROM. */ 1328 WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER); 1329 1330 /* Read the hardware capabilities, revision and SKU type. */ 1331 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap, 1332 sizeof(sc->cap))); 1333 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 1334 sizeof(sc->rev))); 1335 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1336 sizeof(sc->type))); 1337 1338 sc->rev = le16toh(sc->rev); 1339 DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, 1340 sc->rev, sc->type); 1341 1342 /* Read the regulatory domain (4 ASCII characters.) */ 1343 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 1344 sizeof(sc->domain))); 1345 1346 /* Read MAC address. */ 1347 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 1348 IEEE80211_ADDR_LEN)); 1349 1350 /* Read the list of authorized channels. */ 1351 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 1352 WPI_CHK(wpi_read_eeprom_channels(sc, i)); 1353 1354 /* Read the list of TX power groups. */ 1355 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 1356 WPI_CHK(wpi_read_eeprom_group(sc, i)); 1357 1358fail: wpi_apm_stop(sc); /* Power OFF adapter. */ 1359 1360 DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 1361 __func__); 1362 1363 return error; 1364#undef WPI_CHK 1365} 1366 1367/* 1368 * Translate EEPROM flags to net80211. 1369 */ 1370static uint32_t 1371wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel) 1372{ 1373 uint32_t nflags; 1374 1375 nflags = 0; 1376 if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0) 1377 nflags |= IEEE80211_CHAN_PASSIVE; 1378 if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0) 1379 nflags |= IEEE80211_CHAN_NOADHOC; 1380 if (channel->flags & WPI_EEPROM_CHAN_RADAR) { 1381 nflags |= IEEE80211_CHAN_DFS; 1382 /* XXX apparently IBSS may still be marked */ 1383 nflags |= IEEE80211_CHAN_NOADHOC; 1384 } 1385 1386 return nflags; 1387} 1388 1389static void 1390wpi_read_eeprom_band(struct wpi_softc *sc, int n) 1391{ 1392 struct ifnet *ifp = sc->sc_ifp; 1393 struct ieee80211com *ic = ifp->if_l2com; 1394 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1395 const struct wpi_chan_band *band = &wpi_bands[n]; 1396 struct ieee80211_channel *c; 1397 uint8_t chan; 1398 int i, nflags; 1399 1400 for (i = 0; i < band->nchan; i++) { 1401 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1402 DPRINTF(sc, WPI_DEBUG_EEPROM, 1403 "Channel Not Valid: %d, band %d\n", 1404 band->chan[i],n); 1405 continue; 1406 } 1407 1408 chan = band->chan[i]; 1409 nflags = wpi_eeprom_channel_flags(&channels[i]); 1410 1411 c = &ic->ic_channels[ic->ic_nchans++]; 1412 c->ic_ieee = chan; 1413 c->ic_maxregpower = channels[i].maxpwr; 1414 c->ic_maxpower = 2*c->ic_maxregpower; 1415 1416 if (n == 0) { /* 2GHz band */ 1417 c->ic_freq = ieee80211_ieee2mhz(chan, 1418 IEEE80211_CHAN_G); 1419 1420 /* G =>'s B is supported */ 1421 c->ic_flags = IEEE80211_CHAN_B | nflags; 1422 c = &ic->ic_channels[ic->ic_nchans++]; 1423 c[0] = c[-1]; 1424 c->ic_flags = IEEE80211_CHAN_G | nflags; 1425 } else { /* 5GHz band */ 1426 c->ic_freq = ieee80211_ieee2mhz(chan, 1427 IEEE80211_CHAN_A); 1428 1429 c->ic_flags = IEEE80211_CHAN_A | nflags; 1430 } 1431 1432 /* Save maximum allowed TX power for this channel. */ 1433 sc->maxpwr[chan] = channels[i].maxpwr; 1434 1435 DPRINTF(sc, WPI_DEBUG_EEPROM, 1436 "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d," 1437 " offset %d\n", chan, c->ic_freq, 1438 channels[i].flags, sc->maxpwr[chan], 1439 IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans); 1440 } 1441} 1442 1443/** 1444 * Read the eeprom to find out what channels are valid for the given 1445 * band and update net80211 with what we find. 1446 */ 1447static int 1448wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 1449{ 1450 struct ifnet *ifp = sc->sc_ifp; 1451 struct ieee80211com *ic = ifp->if_l2com; 1452 const struct wpi_chan_band *band = &wpi_bands[n]; 1453 int error; 1454 1455 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1456 1457 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1458 band->nchan * sizeof (struct wpi_eeprom_chan)); 1459 if (error != 0) { 1460 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1461 return error; 1462 } 1463 1464 wpi_read_eeprom_band(sc, n); 1465 1466 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1467 1468 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1469 1470 return 0; 1471} 1472 1473static struct wpi_eeprom_chan * 1474wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1475{ 1476 int i, j; 1477 1478 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1479 for (i = 0; i < wpi_bands[j].nchan; i++) 1480 if (wpi_bands[j].chan[i] == c->ic_ieee) 1481 return &sc->eeprom_channels[j][i]; 1482 1483 return NULL; 1484} 1485 1486/* 1487 * Enforce flags read from EEPROM. 1488 */ 1489static int 1490wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1491 int nchan, struct ieee80211_channel chans[]) 1492{ 1493 struct ifnet *ifp = ic->ic_ifp; 1494 struct wpi_softc *sc = ifp->if_softc; 1495 int i; 1496 1497 for (i = 0; i < nchan; i++) { 1498 struct ieee80211_channel *c = &chans[i]; 1499 struct wpi_eeprom_chan *channel; 1500 1501 channel = wpi_find_eeprom_channel(sc, c); 1502 if (channel == NULL) { 1503 if_printf(ic->ic_ifp, 1504 "%s: invalid channel %u freq %u/0x%x\n", 1505 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1506 return EINVAL; 1507 } 1508 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1509 } 1510 1511 return 0; 1512} 1513 1514static int 1515wpi_read_eeprom_group(struct wpi_softc *sc, int n) 1516{ 1517 struct wpi_power_group *group = &sc->groups[n]; 1518 struct wpi_eeprom_group rgroup; 1519 int i, error; 1520 1521 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1522 1523 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1524 &rgroup, sizeof rgroup)) != 0) { 1525 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1526 return error; 1527 } 1528 1529 /* Save TX power group information. */ 1530 group->chan = rgroup.chan; 1531 group->maxpwr = rgroup.maxpwr; 1532 /* Retrieve temperature at which the samples were taken. */ 1533 group->temp = (int16_t)le16toh(rgroup.temp); 1534 1535 DPRINTF(sc, WPI_DEBUG_EEPROM, 1536 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1537 group->maxpwr, group->temp); 1538 1539 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1540 group->samples[i].index = rgroup.samples[i].index; 1541 group->samples[i].power = rgroup.samples[i].power; 1542 1543 DPRINTF(sc, WPI_DEBUG_EEPROM, 1544 "\tsample %d: index=%d power=%d\n", i, 1545 group->samples[i].index, group->samples[i].power); 1546 } 1547 1548 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1549 1550 return 0; 1551} 1552 1553static int 1554wpi_add_node_entry_adhoc(struct wpi_softc *sc) 1555{ 1556 int newid = WPI_ID_IBSS_MIN; 1557 1558 for (; newid <= WPI_ID_IBSS_MAX; newid++) { 1559 if ((sc->nodesmsk & (1 << newid)) == 0) { 1560 sc->nodesmsk |= 1 << newid; 1561 return newid; 1562 } 1563 } 1564 1565 return WPI_ID_UNDEFINED; 1566} 1567 1568static __inline int 1569wpi_add_node_entry_sta(struct wpi_softc *sc) 1570{ 1571 sc->nodesmsk |= 1 << WPI_ID_BSS; 1572 1573 return WPI_ID_BSS; 1574} 1575 1576static __inline int 1577wpi_check_node_entry(struct wpi_softc *sc, uint8_t id) 1578{ 1579 if (id == WPI_ID_UNDEFINED) 1580 return 0; 1581 1582 return (sc->nodesmsk >> id) & 1; 1583} 1584 1585static __inline void 1586wpi_clear_node_table(struct wpi_softc *sc) 1587{ 1588 sc->nodesmsk = 0; 1589} 1590 1591static __inline void 1592wpi_del_node_entry(struct wpi_softc *sc, uint8_t id) 1593{ 1594 sc->nodesmsk &= ~(1 << id); 1595} 1596 1597static struct ieee80211_node * 1598wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1599{ 1600 struct wpi_node *wn; 1601 1602 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1603 M_NOWAIT | M_ZERO); 1604 1605 if (wn == NULL) 1606 return NULL; 1607 1608 wn->id = WPI_ID_UNDEFINED; 1609 1610 return &wn->ni; 1611} 1612 1613static void 1614wpi_node_free(struct ieee80211_node *ni) 1615{ 1616 struct ieee80211com *ic = ni->ni_ic; 1617 struct wpi_softc *sc = ic->ic_ifp->if_softc; 1618 struct wpi_node *wn = WPI_NODE(ni); 1619 1620 if (wn->id != WPI_ID_UNDEFINED) { 1621 WPI_NT_LOCK(sc); 1622 if (wpi_check_node_entry(sc, wn->id)) { 1623 wpi_del_node_entry(sc, wn->id); 1624 wpi_del_node(sc, ni); 1625 } 1626 WPI_NT_UNLOCK(sc); 1627 } 1628 1629 sc->sc_node_free(ni); 1630} 1631 1632/** 1633 * Called by net80211 when ever there is a change to 80211 state machine 1634 */ 1635static int 1636wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1637{ 1638 struct wpi_vap *wvp = WPI_VAP(vap); 1639 struct ieee80211com *ic = vap->iv_ic; 1640 struct ifnet *ifp = ic->ic_ifp; 1641 struct wpi_softc *sc = ifp->if_softc; 1642 int error = 0; 1643 1644 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1645 1646 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1647 ieee80211_state_name[vap->iv_state], 1648 ieee80211_state_name[nstate]); 1649 1650 IEEE80211_UNLOCK(ic); 1651 WPI_LOCK(sc); 1652 switch (nstate) { 1653 case IEEE80211_S_SCAN: 1654 if ((vap->iv_opmode == IEEE80211_M_IBSS || 1655 vap->iv_opmode == IEEE80211_M_AHDEMO) && 1656 (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 1657 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1658 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1659 device_printf(sc->sc_dev, 1660 "%s: could not send RXON\n", __func__); 1661 } 1662 } 1663 break; 1664 1665 case IEEE80211_S_ASSOC: 1666 if (vap->iv_state != IEEE80211_S_RUN) 1667 break; 1668 /* FALLTHROUGH */ 1669 case IEEE80211_S_AUTH: 1670 /* 1671 * The node must be registered in the firmware before auth. 1672 * Also the associd must be cleared on RUN -> ASSOC 1673 * transitions. 1674 */ 1675 if ((error = wpi_auth(sc, vap)) != 0) { 1676 device_printf(sc->sc_dev, 1677 "%s: could not move to AUTH state, error %d\n", 1678 __func__, error); 1679 } 1680 break; 1681 1682 case IEEE80211_S_RUN: 1683 /* 1684 * RUN -> RUN transition; Just restart the timers. 1685 */ 1686 if (vap->iv_state == IEEE80211_S_RUN) { 1687 wpi_calib_timeout(sc); 1688 break; 1689 } 1690 1691 /* 1692 * !RUN -> RUN requires setting the association id 1693 * which is done with a firmware cmd. We also defer 1694 * starting the timers until that work is done. 1695 */ 1696 if ((error = wpi_run(sc, vap)) != 0) { 1697 device_printf(sc->sc_dev, 1698 "%s: could not move to RUN state\n", __func__); 1699 } 1700 break; 1701 1702 default: 1703 break; 1704 } 1705 WPI_UNLOCK(sc); 1706 IEEE80211_LOCK(ic); 1707 if (error != 0) { 1708 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1709 return error; 1710 } 1711 1712 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1713 1714 return wvp->wv_newstate(vap, nstate, arg); 1715} 1716 1717static void 1718wpi_calib_timeout(void *arg) 1719{ 1720 struct wpi_softc *sc = arg; 1721 struct ifnet *ifp = sc->sc_ifp; 1722 struct ieee80211com *ic = ifp->if_l2com; 1723 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1724 1725 if (vap->iv_state != IEEE80211_S_RUN) 1726 return; 1727 1728 wpi_power_calibration(sc); 1729 1730 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1731} 1732 1733static __inline uint8_t 1734rate2plcp(const uint8_t rate) 1735{ 1736 switch (rate) { 1737 case 12: return 0xd; 1738 case 18: return 0xf; 1739 case 24: return 0x5; 1740 case 36: return 0x7; 1741 case 48: return 0x9; 1742 case 72: return 0xb; 1743 case 96: return 0x1; 1744 case 108: return 0x3; 1745 case 2: return 10; 1746 case 4: return 20; 1747 case 11: return 55; 1748 case 22: return 110; 1749 default: return 0; 1750 } 1751} 1752 1753static __inline uint8_t 1754plcp2rate(const uint8_t plcp) 1755{ 1756 switch (plcp) { 1757 case 0xd: return 12; 1758 case 0xf: return 18; 1759 case 0x5: return 24; 1760 case 0x7: return 36; 1761 case 0x9: return 48; 1762 case 0xb: return 72; 1763 case 0x1: return 96; 1764 case 0x3: return 108; 1765 case 10: return 2; 1766 case 20: return 4; 1767 case 55: return 11; 1768 case 110: return 22; 1769 default: return 0; 1770 } 1771} 1772 1773/* Quickly determine if a given rate is CCK or OFDM. */ 1774#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1775 1776static void 1777wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1778 struct wpi_rx_data *data) 1779{ 1780 struct ifnet *ifp = sc->sc_ifp; 1781 struct ieee80211com *ic = ifp->if_l2com; 1782 struct wpi_rx_ring *ring = &sc->rxq; 1783 struct wpi_rx_stat *stat; 1784 struct wpi_rx_head *head; 1785 struct wpi_rx_tail *tail; 1786 struct ieee80211_frame *wh; 1787 struct ieee80211_node *ni; 1788 struct mbuf *m, *m1; 1789 bus_addr_t paddr; 1790 uint32_t flags; 1791 uint16_t len; 1792 int error; 1793 1794 stat = (struct wpi_rx_stat *)(desc + 1); 1795 1796 if (stat->len > WPI_STAT_MAXLEN) { 1797 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1798 goto fail1; 1799 } 1800 1801 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1802 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1803 len = le16toh(head->len); 1804 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1805 flags = le32toh(tail->flags); 1806 1807 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1808 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1809 le32toh(desc->len), len, (int8_t)stat->rssi, 1810 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1811 1812 /* Discard frames with a bad FCS early. */ 1813 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1814 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1815 __func__, flags); 1816 goto fail1; 1817 } 1818 /* Discard frames that are too short. */ 1819 if (len < sizeof (*wh)) { 1820 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1821 __func__, len); 1822 goto fail1; 1823 } 1824 1825 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1826 if (m1 == NULL) { 1827 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1828 __func__); 1829 goto fail1; 1830 } 1831 bus_dmamap_unload(ring->data_dmat, data->map); 1832 1833 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1834 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1835 if (error != 0 && error != EFBIG) { 1836 device_printf(sc->sc_dev, 1837 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1838 m_freem(m1); 1839 1840 /* Try to reload the old mbuf. */ 1841 error = bus_dmamap_load(ring->data_dmat, data->map, 1842 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1843 &paddr, BUS_DMA_NOWAIT); 1844 if (error != 0 && error != EFBIG) { 1845 panic("%s: could not load old RX mbuf", __func__); 1846 } 1847 /* Physical address may have changed. */ 1848 ring->desc[ring->cur] = htole32(paddr); 1849 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1850 BUS_DMASYNC_PREWRITE); 1851 goto fail1; 1852 } 1853 1854 m = data->m; 1855 data->m = m1; 1856 /* Update RX descriptor. */ 1857 ring->desc[ring->cur] = htole32(paddr); 1858 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1859 BUS_DMASYNC_PREWRITE); 1860 1861 /* Finalize mbuf. */ 1862 m->m_pkthdr.rcvif = ifp; 1863 m->m_data = (caddr_t)(head + 1); 1864 m->m_pkthdr.len = m->m_len = len; 1865 1866 /* Grab a reference to the source node. */ 1867 wh = mtod(m, struct ieee80211_frame *); 1868 1869 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 1870 (flags & WPI_RX_CIPHER_MASK) == WPI_RX_CIPHER_CCMP) { 1871 /* Check whether decryption was successful or not. */ 1872 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 1873 DPRINTF(sc, WPI_DEBUG_RECV, 1874 "CCMP decryption failed 0x%x\n", flags); 1875 goto fail2; 1876 } 1877 m->m_flags |= M_WEP; 1878 } 1879 1880 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1881 1882 if (ieee80211_radiotap_active(ic)) { 1883 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1884 1885 tap->wr_flags = 0; 1886 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 1887 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1888 tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET); 1889 tap->wr_dbm_antnoise = WPI_RSSI_OFFSET; 1890 tap->wr_tsft = tail->tstamp; 1891 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1892 tap->wr_rate = plcp2rate(head->plcp); 1893 } 1894 1895 WPI_UNLOCK(sc); 1896 1897 /* Send the frame to the 802.11 layer. */ 1898 if (ni != NULL) { 1899 (void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET); 1900 /* Node is no longer needed. */ 1901 ieee80211_free_node(ni); 1902 } else 1903 (void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET); 1904 1905 WPI_LOCK(sc); 1906 1907 return; 1908 1909fail2: m_freem(m); 1910 1911fail1: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1912} 1913 1914static void 1915wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1916 struct wpi_rx_data *data) 1917{ 1918 /* Ignore */ 1919} 1920 1921static void 1922wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1923{ 1924 struct ifnet *ifp = sc->sc_ifp; 1925 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1926 struct wpi_tx_data *data = &ring->data[desc->idx]; 1927 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1928 struct mbuf *m; 1929 struct ieee80211_node *ni; 1930 struct ieee80211vap *vap; 1931 struct ieee80211com *ic; 1932 int ackfailcnt = stat->ackfailcnt / 2; /* wpi_mrr_setup() */ 1933 int status = le32toh(stat->status); 1934 1935 KASSERT(data->ni != NULL, ("no node")); 1936 KASSERT(data->m != NULL, ("no mbuf")); 1937 1938 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1939 1940 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 1941 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 1942 "status %x\n", __func__, desc->qid, desc->idx, ackfailcnt, 1943 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 1944 1945 /* Unmap and free mbuf. */ 1946 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1947 bus_dmamap_unload(ring->data_dmat, data->map); 1948 m = data->m, data->m = NULL; 1949 ni = data->ni, data->ni = NULL; 1950 vap = ni->ni_vap; 1951 ic = vap->iv_ic; 1952 1953 /* 1954 * Update rate control statistics for the node. 1955 */ 1956 WPI_UNLOCK(sc); 1957 if ((status & 0xff) != 1) { 1958 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1959 ieee80211_ratectl_tx_complete(vap, ni, 1960 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 1961 } else { 1962 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1963 ieee80211_ratectl_tx_complete(vap, ni, 1964 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 1965 } 1966 1967 ieee80211_tx_complete(ni, m, (status & 0xff) != 1); 1968 WPI_LOCK(sc); 1969 1970 sc->sc_tx_timer = 0; 1971 if (--ring->queued < WPI_TX_RING_LOMARK) { 1972 sc->qfullmsk &= ~(1 << ring->qid); 1973 IF_LOCK(&ifp->if_snd); 1974 if (sc->qfullmsk == 0 && 1975 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 1976 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1977 IF_UNLOCK(&ifp->if_snd); 1978 ieee80211_runtask(ic, &sc->sc_start_task); 1979 } else 1980 IF_UNLOCK(&ifp->if_snd); 1981 } 1982 1983 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1984} 1985 1986/* 1987 * Process a "command done" firmware notification. This is where we wakeup 1988 * processes waiting for a synchronous command completion. 1989 */ 1990static void 1991wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1992{ 1993 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 1994 struct wpi_tx_data *data; 1995 1996 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid %x idx %d flags %x " 1997 "type %s len %d\n", desc->qid, desc->idx, 1998 desc->flags, wpi_cmd_str(desc->type), 1999 le32toh(desc->len)); 2000 2001 if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM) 2002 return; /* Not a command ack. */ 2003 2004 KASSERT(ring->queued == 0, ("ring->queued must be 0")); 2005 2006 data = &ring->data[desc->idx]; 2007 2008 /* If the command was mapped in an mbuf, free it. */ 2009 if (data->m != NULL) { 2010 bus_dmamap_sync(ring->data_dmat, data->map, 2011 BUS_DMASYNC_POSTWRITE); 2012 bus_dmamap_unload(ring->data_dmat, data->map); 2013 m_freem(data->m); 2014 data->m = NULL; 2015 } 2016 2017 wakeup(&ring->cmd[desc->idx]); 2018} 2019 2020static void 2021wpi_notif_intr(struct wpi_softc *sc) 2022{ 2023 struct ifnet *ifp = sc->sc_ifp; 2024 struct ieee80211com *ic = ifp->if_l2com; 2025 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2026 int hw; 2027 2028 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 2029 BUS_DMASYNC_POSTREAD); 2030 2031 hw = le32toh(sc->shared->next); 2032 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 2033 2034 while (sc->rxq.cur != hw) { 2035 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 2036 2037 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 2038 struct wpi_rx_desc *desc; 2039 2040 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2041 BUS_DMASYNC_POSTREAD); 2042 desc = mtod(data->m, struct wpi_rx_desc *); 2043 2044 DPRINTF(sc, WPI_DEBUG_NOTIFY, 2045 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 2046 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 2047 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 2048 2049 if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) { 2050 /* Reply to a command. */ 2051 wpi_cmd_done(sc, desc); 2052 } 2053 2054 switch (desc->type) { 2055 case WPI_RX_DONE: 2056 /* An 802.11 frame has been received. */ 2057 wpi_rx_done(sc, desc, data); 2058 2059 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2060 /* wpi_stop() was called. */ 2061 return; 2062 } 2063 2064 break; 2065 2066 case WPI_TX_DONE: 2067 /* An 802.11 frame has been transmitted. */ 2068 wpi_tx_done(sc, desc); 2069 break; 2070 2071 case WPI_RX_STATISTICS: 2072 case WPI_BEACON_STATISTICS: 2073 wpi_rx_statistics(sc, desc, data); 2074 break; 2075 2076 case WPI_BEACON_MISSED: 2077 { 2078 struct wpi_beacon_missed *miss = 2079 (struct wpi_beacon_missed *)(desc + 1); 2080 int misses; 2081 2082 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2083 BUS_DMASYNC_POSTREAD); 2084 misses = le32toh(miss->consecutive); 2085 2086 DPRINTF(sc, WPI_DEBUG_STATE, 2087 "%s: beacons missed %d/%d\n", __func__, misses, 2088 le32toh(miss->total)); 2089 2090 if (vap->iv_state == IEEE80211_S_RUN && 2091 (ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2092 if (misses >= vap->iv_bmissthreshold) { 2093 WPI_UNLOCK(sc); 2094 ieee80211_beacon_miss(ic); 2095 WPI_LOCK(sc); 2096 } 2097 } 2098 break; 2099 } 2100 case WPI_UC_READY: 2101 { 2102 struct wpi_ucode_info *uc = 2103 (struct wpi_ucode_info *)(desc + 1); 2104 2105 /* The microcontroller is ready. */ 2106 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2107 BUS_DMASYNC_POSTREAD); 2108 DPRINTF(sc, WPI_DEBUG_RESET, 2109 "microcode alive notification version=%d.%d " 2110 "subtype=%x alive=%x\n", uc->major, uc->minor, 2111 uc->subtype, le32toh(uc->valid)); 2112 2113 if (le32toh(uc->valid) != 1) { 2114 device_printf(sc->sc_dev, 2115 "microcontroller initialization failed\n"); 2116 wpi_stop_locked(sc); 2117 } 2118 /* Save the address of the error log in SRAM. */ 2119 sc->errptr = le32toh(uc->errptr); 2120 break; 2121 } 2122 case WPI_STATE_CHANGED: 2123 { 2124 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2125 BUS_DMASYNC_POSTREAD); 2126 2127 uint32_t *status = (uint32_t *)(desc + 1); 2128 2129 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2130 le32toh(*status)); 2131 2132 if (le32toh(*status) & 1) { 2133 WPI_NT_LOCK(sc); 2134 wpi_clear_node_table(sc); 2135 WPI_NT_UNLOCK(sc); 2136 ieee80211_runtask(ic, &sc->sc_radiooff_task); 2137 return; 2138 } 2139 break; 2140 } 2141 case WPI_START_SCAN: 2142 { 2143 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2144 BUS_DMASYNC_POSTREAD); 2145#ifdef WPI_DEBUG 2146 struct wpi_start_scan *scan = 2147 (struct wpi_start_scan *)(desc + 1); 2148 DPRINTF(sc, WPI_DEBUG_SCAN, 2149 "%s: scanning channel %d status %x\n", 2150 __func__, scan->chan, le32toh(scan->status)); 2151#endif 2152 break; 2153 } 2154 case WPI_STOP_SCAN: 2155 { 2156 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2157 BUS_DMASYNC_POSTREAD); 2158#ifdef WPI_DEBUG 2159 struct wpi_stop_scan *scan = 2160 (struct wpi_stop_scan *)(desc + 1); 2161 DPRINTF(sc, WPI_DEBUG_SCAN, 2162 "scan finished nchan=%d status=%d chan=%d\n", 2163 scan->nchan, scan->status, scan->chan); 2164#endif 2165 sc->sc_scan_timer = 0; 2166 WPI_UNLOCK(sc); 2167 ieee80211_scan_next(vap); 2168 WPI_LOCK(sc); 2169 break; 2170 } 2171 } 2172 } 2173 2174 /* Tell the firmware what we have processed. */ 2175 wpi_update_rx_ring(sc); 2176} 2177 2178/* 2179 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2180 * from power-down sleep mode. 2181 */ 2182static void 2183wpi_wakeup_intr(struct wpi_softc *sc) 2184{ 2185 int qid; 2186 2187 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2188 "%s: ucode wakeup from power-down sleep\n", __func__); 2189 2190 /* Wakeup RX and TX rings. */ 2191 if (sc->rxq.update) { 2192 sc->rxq.update = 0; 2193 wpi_update_rx_ring(sc); 2194 } 2195 WPI_TXQ_LOCK(sc); 2196 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) { 2197 struct wpi_tx_ring *ring = &sc->txq[qid]; 2198 2199 if (ring->update) { 2200 ring->update = 0; 2201 wpi_update_tx_ring(sc, ring); 2202 } 2203 } 2204 WPI_TXQ_UNLOCK(sc); 2205 2206 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2207} 2208 2209/* 2210 * This function prints firmware registers 2211 */ 2212#ifdef WPI_DEBUG 2213static void 2214wpi_debug_registers(struct wpi_softc *sc) 2215{ 2216#define COUNTOF(array) (sizeof(array) / sizeof(array[0])) 2217 int i; 2218 static const uint32_t csr_tbl[] = { 2219 WPI_HW_IF_CONFIG, 2220 WPI_INT, 2221 WPI_INT_MASK, 2222 WPI_FH_INT, 2223 WPI_GPIO_IN, 2224 WPI_RESET, 2225 WPI_GP_CNTRL, 2226 WPI_EEPROM, 2227 WPI_EEPROM_GP, 2228 WPI_GIO, 2229 WPI_UCODE_GP1, 2230 WPI_UCODE_GP2, 2231 WPI_GIO_CHICKEN, 2232 WPI_ANA_PLL, 2233 WPI_DBG_HPET_MEM, 2234 }; 2235 static const uint32_t prph_tbl[] = { 2236 WPI_APMG_CLK_CTRL, 2237 WPI_APMG_PS, 2238 WPI_APMG_PCI_STT, 2239 WPI_APMG_RFKILL, 2240 }; 2241 2242 DPRINTF(sc, WPI_DEBUG_REGISTER,"%s","\n"); 2243 2244 for (i = 0; i < COUNTOF(csr_tbl); i++) { 2245 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2246 wpi_get_csr_string(csr_tbl[i]), WPI_READ(sc, csr_tbl[i])); 2247 2248 if ((i + 1) % 2 == 0) 2249 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2250 } 2251 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n\n"); 2252 2253 if (wpi_nic_lock(sc) == 0) { 2254 for (i = 0; i < COUNTOF(prph_tbl); i++) { 2255 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2256 wpi_get_prph_string(prph_tbl[i]), 2257 wpi_prph_read(sc, prph_tbl[i])); 2258 2259 if ((i + 1) % 2 == 0) 2260 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2261 } 2262 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2263 wpi_nic_unlock(sc); 2264 } else { 2265 DPRINTF(sc, WPI_DEBUG_REGISTER, 2266 "Cannot access internal registers.\n"); 2267 } 2268#undef COUNTOF 2269} 2270#endif 2271 2272/* 2273 * Dump the error log of the firmware when a firmware panic occurs. Although 2274 * we can't debug the firmware because it is neither open source nor free, it 2275 * can help us to identify certain classes of problems. 2276 */ 2277static void 2278wpi_fatal_intr(struct wpi_softc *sc) 2279{ 2280 struct wpi_fw_dump dump; 2281 uint32_t i, offset, count; 2282 const uint32_t size_errmsg = 2283 (sizeof (wpi_fw_errmsg) / sizeof ((wpi_fw_errmsg)[0])); 2284 2285 /* Check that the error log address is valid. */ 2286 if (sc->errptr < WPI_FW_DATA_BASE || 2287 sc->errptr + sizeof (dump) > 2288 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2289 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2290 sc->errptr); 2291 return; 2292 } 2293 if (wpi_nic_lock(sc) != 0) { 2294 printf("%s: could not read firmware error log\n", __func__); 2295 return; 2296 } 2297 /* Read number of entries in the log. */ 2298 count = wpi_mem_read(sc, sc->errptr); 2299 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2300 printf("%s: invalid count field (count = %u)\n", __func__, 2301 count); 2302 wpi_nic_unlock(sc); 2303 return; 2304 } 2305 /* Skip "count" field. */ 2306 offset = sc->errptr + sizeof (uint32_t); 2307 printf("firmware error log (count = %u):\n", count); 2308 for (i = 0; i < count; i++) { 2309 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2310 sizeof (dump) / sizeof (uint32_t)); 2311 2312 printf(" error type = \"%s\" (0x%08X)\n", 2313 (dump.desc < size_errmsg) ? 2314 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2315 dump.desc); 2316 printf(" error data = 0x%08X\n", 2317 dump.data); 2318 printf(" branch link = 0x%08X%08X\n", 2319 dump.blink[0], dump.blink[1]); 2320 printf(" interrupt link = 0x%08X%08X\n", 2321 dump.ilink[0], dump.ilink[1]); 2322 printf(" time = %u\n", dump.time); 2323 2324 offset += sizeof (dump); 2325 } 2326 wpi_nic_unlock(sc); 2327 /* Dump driver status (TX and RX rings) while we're here. */ 2328 printf("driver status:\n"); 2329 WPI_TXQ_LOCK(sc); 2330 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 2331 struct wpi_tx_ring *ring = &sc->txq[i]; 2332 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2333 i, ring->qid, ring->cur, ring->queued); 2334 } 2335 WPI_TXQ_UNLOCK(sc); 2336 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2337} 2338 2339static void 2340wpi_intr(void *arg) 2341{ 2342 struct wpi_softc *sc = arg; 2343 struct ifnet *ifp = sc->sc_ifp; 2344 uint32_t r1, r2; 2345 2346 WPI_LOCK(sc); 2347 2348 /* Disable interrupts. */ 2349 WPI_WRITE(sc, WPI_INT_MASK, 0); 2350 2351 r1 = WPI_READ(sc, WPI_INT); 2352 2353 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) 2354 goto end; /* Hardware gone! */ 2355 2356 r2 = WPI_READ(sc, WPI_FH_INT); 2357 2358 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2359 r1, r2); 2360 2361 if (r1 == 0 && r2 == 0) 2362 goto done; /* Interrupt not for us. */ 2363 2364 /* Acknowledge interrupts. */ 2365 WPI_WRITE(sc, WPI_INT, r1); 2366 WPI_WRITE(sc, WPI_FH_INT, r2); 2367 2368 if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) { 2369 struct ieee80211com *ic = ifp->if_l2com; 2370 2371 device_printf(sc->sc_dev, "fatal firmware error\n"); 2372#ifdef WPI_DEBUG 2373 wpi_debug_registers(sc); 2374#endif 2375 wpi_fatal_intr(sc); 2376 DPRINTF(sc, WPI_DEBUG_HW, 2377 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2378 "(Hardware Error)"); 2379 ieee80211_runtask(ic, &sc->sc_reinittask); 2380 goto end; 2381 } 2382 2383 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2384 (r2 & WPI_FH_INT_RX)) 2385 wpi_notif_intr(sc); 2386 2387 if (r1 & WPI_INT_ALIVE) 2388 wakeup(sc); /* Firmware is alive. */ 2389 2390 if (r1 & WPI_INT_WAKEUP) 2391 wpi_wakeup_intr(sc); 2392 2393done: 2394 /* Re-enable interrupts. */ 2395 if (ifp->if_flags & IFF_UP) 2396 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2397 2398end: WPI_UNLOCK(sc); 2399} 2400 2401static int 2402wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2403{ 2404 struct ieee80211_frame *wh; 2405 struct wpi_tx_cmd *cmd; 2406 struct wpi_tx_data *data; 2407 struct wpi_tx_desc *desc; 2408 struct wpi_tx_ring *ring; 2409 struct mbuf *m1; 2410 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2411 int error, i, hdrlen, nsegs, totlen, pad; 2412 2413 WPI_TXQ_LOCK(sc); 2414 2415 KASSERT(buf->size <= sizeof(buf->data), ("buffer overflow")); 2416 2417 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2418 2419 if (sc->txq_active == 0) { 2420 /* wpi_stop() was called */ 2421 error = ENETDOWN; 2422 goto fail; 2423 } 2424 2425 wh = mtod(buf->m, struct ieee80211_frame *); 2426 hdrlen = ieee80211_anyhdrsize(wh); 2427 totlen = buf->m->m_pkthdr.len; 2428 2429 if (hdrlen & 3) { 2430 /* First segment length must be a multiple of 4. */ 2431 pad = 4 - (hdrlen & 3); 2432 } else 2433 pad = 0; 2434 2435 ring = &sc->txq[buf->ac]; 2436 desc = &ring->desc[ring->cur]; 2437 data = &ring->data[ring->cur]; 2438 2439 /* Prepare TX firmware command. */ 2440 cmd = &ring->cmd[ring->cur]; 2441 cmd->code = buf->code; 2442 cmd->flags = 0; 2443 cmd->qid = ring->qid; 2444 cmd->idx = ring->cur; 2445 2446 memcpy(cmd->data, buf->data, buf->size); 2447 2448 /* Save and trim IEEE802.11 header. */ 2449 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen); 2450 m_adj(buf->m, hdrlen); 2451 2452 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2453 segs, &nsegs, BUS_DMA_NOWAIT); 2454 if (error != 0 && error != EFBIG) { 2455 device_printf(sc->sc_dev, 2456 "%s: can't map mbuf (error %d)\n", __func__, error); 2457 goto fail; 2458 } 2459 if (error != 0) { 2460 /* Too many DMA segments, linearize mbuf. */ 2461 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1); 2462 if (m1 == NULL) { 2463 device_printf(sc->sc_dev, 2464 "%s: could not defrag mbuf\n", __func__); 2465 error = ENOBUFS; 2466 goto fail; 2467 } 2468 buf->m = m1; 2469 2470 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2471 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2472 if (error != 0) { 2473 device_printf(sc->sc_dev, 2474 "%s: can't map mbuf (error %d)\n", __func__, 2475 error); 2476 goto fail; 2477 } 2478 } 2479 2480 KASSERT(nsegs < WPI_MAX_SCATTER, 2481 ("too many DMA segments, nsegs (%d) should be less than %d", 2482 nsegs, WPI_MAX_SCATTER)); 2483 2484 data->m = buf->m; 2485 data->ni = buf->ni; 2486 2487 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2488 __func__, ring->qid, ring->cur, totlen, nsegs); 2489 2490 /* Fill TX descriptor. */ 2491 desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs); 2492 /* First DMA segment is used by the TX command. */ 2493 desc->segs[0].addr = htole32(data->cmd_paddr); 2494 desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad); 2495 /* Other DMA segments are for data payload. */ 2496 seg = &segs[0]; 2497 for (i = 1; i <= nsegs; i++) { 2498 desc->segs[i].addr = htole32(seg->ds_addr); 2499 desc->segs[i].len = htole32(seg->ds_len); 2500 seg++; 2501 } 2502 2503 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2504 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2505 BUS_DMASYNC_PREWRITE); 2506 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2507 BUS_DMASYNC_PREWRITE); 2508 2509 /* Kick TX ring. */ 2510 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2511 wpi_update_tx_ring(sc, ring); 2512 2513 if (ring->qid < WPI_CMD_QUEUE_NUM) { 2514 /* Mark TX ring as full if we reach a certain threshold. */ 2515 if (++ring->queued > WPI_TX_RING_HIMARK) 2516 sc->qfullmsk |= 1 << ring->qid; 2517 2518 sc->sc_tx_timer = 5; 2519 } 2520 2521 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2522 2523 WPI_TXQ_UNLOCK(sc); 2524 2525 return 0; 2526 2527fail: m_freem(buf->m); 2528 2529 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2530 2531 WPI_TXQ_UNLOCK(sc); 2532 2533 return error; 2534} 2535 2536/* 2537 * Construct the data packet for a transmit buffer. 2538 */ 2539static int 2540wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2541{ 2542 const struct ieee80211_txparam *tp; 2543 struct ieee80211vap *vap = ni->ni_vap; 2544 struct ieee80211com *ic = ni->ni_ic; 2545 struct wpi_node *wn = WPI_NODE(ni); 2546 struct ieee80211_channel *chan; 2547 struct ieee80211_frame *wh; 2548 struct ieee80211_key *k = NULL; 2549 struct wpi_buf tx_data; 2550 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2551 uint32_t flags; 2552 uint16_t qos; 2553 uint8_t tid, type; 2554 int ac, error, swcrypt, rate, ismcast, totlen; 2555 2556 wh = mtod(m, struct ieee80211_frame *); 2557 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2558 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2559 2560 /* Select EDCA Access Category and TX ring for this frame. */ 2561 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2562 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2563 tid = qos & IEEE80211_QOS_TID; 2564 } else { 2565 qos = 0; 2566 tid = 0; 2567 } 2568 ac = M_WME_GETAC(m); 2569 2570 chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ? 2571 ni->ni_chan : ic->ic_curchan; 2572 tp = &vap->iv_txparms[ieee80211_chan2mode(chan)]; 2573 2574 /* Choose a TX rate index. */ 2575 if (type == IEEE80211_FC0_TYPE_MGT) 2576 rate = tp->mgmtrate; 2577 else if (ismcast) 2578 rate = tp->mcastrate; 2579 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2580 rate = tp->ucastrate; 2581 else if (m->m_flags & M_EAPOL) 2582 rate = tp->mgmtrate; 2583 else { 2584 /* XXX pass pktlen */ 2585 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2586 rate = ni->ni_txrate; 2587 } 2588 2589 /* Encrypt the frame if need be. */ 2590 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2591 /* Retrieve key for TX. */ 2592 k = ieee80211_crypto_encap(ni, m); 2593 if (k == NULL) { 2594 error = ENOBUFS; 2595 goto fail; 2596 } 2597 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2598 2599 /* 802.11 header may have moved. */ 2600 wh = mtod(m, struct ieee80211_frame *); 2601 } 2602 totlen = m->m_pkthdr.len; 2603 2604 if (ieee80211_radiotap_active_vap(vap)) { 2605 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2606 2607 tap->wt_flags = 0; 2608 tap->wt_rate = rate; 2609 if (k != NULL) 2610 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2611 2612 ieee80211_radiotap_tx(vap, m); 2613 } 2614 2615 flags = 0; 2616 if (!ismcast) { 2617 /* Unicast frame, check if an ACK is expected. */ 2618 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2619 IEEE80211_QOS_ACKPOLICY_NOACK) 2620 flags |= WPI_TX_NEED_ACK; 2621 } 2622 2623 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2624 flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */ 2625 2626 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2627 if (!ismcast) { 2628 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2629 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2630 flags |= WPI_TX_NEED_RTS; 2631 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2632 WPI_RATE_IS_OFDM(rate)) { 2633 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2634 flags |= WPI_TX_NEED_CTS; 2635 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2636 flags |= WPI_TX_NEED_RTS; 2637 } 2638 2639 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2640 flags |= WPI_TX_FULL_TXOP; 2641 } 2642 2643 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2644 if (type == IEEE80211_FC0_TYPE_MGT) { 2645 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2646 2647 /* Tell HW to set timestamp in probe responses. */ 2648 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2649 flags |= WPI_TX_INSERT_TSTAMP; 2650 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2651 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2652 tx->timeout = htole16(3); 2653 else 2654 tx->timeout = htole16(2); 2655 } 2656 2657 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2658 tx->id = WPI_ID_BROADCAST; 2659 else { 2660 if (wn->id == WPI_ID_UNDEFINED) { 2661 device_printf(sc->sc_dev, 2662 "%s: undefined node id\n", __func__); 2663 error = EINVAL; 2664 goto fail; 2665 } 2666 2667 tx->id = wn->id; 2668 } 2669 2670 if (type != IEEE80211_FC0_TYPE_MGT) 2671 tx->data_ntries = tp->maxretry; 2672 2673 if (k != NULL && !swcrypt) { 2674 switch (k->wk_cipher->ic_cipher) { 2675 case IEEE80211_CIPHER_AES_CCM: 2676 tx->security = WPI_CIPHER_CCMP; 2677 break; 2678 2679 default: 2680 break; 2681 } 2682 2683 memcpy(tx->key, k->wk_key, k->wk_keylen); 2684 } 2685 2686 tx->len = htole16(totlen); 2687 tx->flags = htole32(flags); 2688 tx->plcp = rate2plcp(rate); 2689 tx->tid = tid; 2690 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2691 tx->ofdm_mask = 0xff; 2692 tx->cck_mask = 0x0f; 2693 tx->rts_ntries = 7; 2694 2695 tx_data.ni = ni; 2696 tx_data.m = m; 2697 tx_data.size = sizeof(struct wpi_cmd_data); 2698 tx_data.code = WPI_CMD_TX_DATA; 2699 tx_data.ac = ac; 2700 2701 return wpi_cmd2(sc, &tx_data); 2702 2703fail: m_freem(m); 2704 return error; 2705} 2706 2707static int 2708wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, 2709 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 2710{ 2711 struct ieee80211vap *vap = ni->ni_vap; 2712 struct ieee80211_key *k = NULL; 2713 struct ieee80211_frame *wh; 2714 struct wpi_buf tx_data; 2715 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2716 uint32_t flags; 2717 uint8_t type; 2718 int ac, rate, swcrypt, totlen; 2719 2720 wh = mtod(m, struct ieee80211_frame *); 2721 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2722 2723 ac = params->ibp_pri & 3; 2724 2725 /* Choose a TX rate index. */ 2726 rate = params->ibp_rate0; 2727 2728 flags = 0; 2729 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2730 flags |= WPI_TX_NEED_ACK; 2731 if (params->ibp_flags & IEEE80211_BPF_RTS) 2732 flags |= WPI_TX_NEED_RTS; 2733 if (params->ibp_flags & IEEE80211_BPF_CTS) 2734 flags |= WPI_TX_NEED_CTS; 2735 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2736 flags |= WPI_TX_FULL_TXOP; 2737 2738 /* Encrypt the frame if need be. */ 2739 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) { 2740 /* Retrieve key for TX. */ 2741 k = ieee80211_crypto_encap(ni, m); 2742 if (k == NULL) { 2743 m_freem(m); 2744 return ENOBUFS; 2745 } 2746 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2747 2748 /* 802.11 header may have moved. */ 2749 wh = mtod(m, struct ieee80211_frame *); 2750 } 2751 totlen = m->m_pkthdr.len; 2752 2753 if (ieee80211_radiotap_active_vap(vap)) { 2754 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2755 2756 tap->wt_flags = 0; 2757 tap->wt_rate = rate; 2758 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) 2759 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2760 2761 ieee80211_radiotap_tx(vap, m); 2762 } 2763 2764 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2765 if (type == IEEE80211_FC0_TYPE_MGT) { 2766 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2767 2768 /* Tell HW to set timestamp in probe responses. */ 2769 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2770 flags |= WPI_TX_INSERT_TSTAMP; 2771 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2772 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2773 tx->timeout = htole16(3); 2774 else 2775 tx->timeout = htole16(2); 2776 } 2777 2778 if (k != NULL && !swcrypt) { 2779 switch (k->wk_cipher->ic_cipher) { 2780 case IEEE80211_CIPHER_AES_CCM: 2781 tx->security = WPI_CIPHER_CCMP; 2782 break; 2783 2784 default: 2785 break; 2786 } 2787 2788 memcpy(tx->key, k->wk_key, k->wk_keylen); 2789 } 2790 2791 tx->len = htole16(totlen); 2792 tx->flags = htole32(flags); 2793 tx->plcp = rate2plcp(rate); 2794 tx->id = WPI_ID_BROADCAST; 2795 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2796 tx->rts_ntries = params->ibp_try1; 2797 tx->data_ntries = params->ibp_try0; 2798 2799 tx_data.ni = ni; 2800 tx_data.m = m; 2801 tx_data.size = sizeof(struct wpi_cmd_data); 2802 tx_data.code = WPI_CMD_TX_DATA; 2803 tx_data.ac = ac; 2804 2805 return wpi_cmd2(sc, &tx_data); 2806} 2807 2808static int 2809wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2810 const struct ieee80211_bpf_params *params) 2811{ 2812 struct ieee80211com *ic = ni->ni_ic; 2813 struct ifnet *ifp = ic->ic_ifp; 2814 struct wpi_softc *sc = ifp->if_softc; 2815 int error = 0; 2816 2817 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2818 2819 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2820 ieee80211_free_node(ni); 2821 m_freem(m); 2822 return ENETDOWN; 2823 } 2824 2825 WPI_LOCK(sc); 2826 if (params == NULL) { 2827 /* 2828 * Legacy path; interpret frame contents to decide 2829 * precisely how to send the frame. 2830 */ 2831 error = wpi_tx_data(sc, m, ni); 2832 } else { 2833 /* 2834 * Caller supplied explicit parameters to use in 2835 * sending the frame. 2836 */ 2837 error = wpi_tx_data_raw(sc, m, ni, params); 2838 } 2839 WPI_UNLOCK(sc); 2840 2841 if (error != 0) { 2842 /* NB: m is reclaimed on tx failure */ 2843 ieee80211_free_node(ni); 2844 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2845 2846 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2847 2848 return error; 2849 } 2850 2851 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2852 2853 return 0; 2854} 2855 2856/** 2857 * Process data waiting to be sent on the IFNET output queue 2858 */ 2859static void 2860wpi_start(struct ifnet *ifp) 2861{ 2862 struct wpi_softc *sc = ifp->if_softc; 2863 2864 WPI_LOCK(sc); 2865 wpi_start_locked(ifp); 2866 WPI_UNLOCK(sc); 2867} 2868 2869static void 2870wpi_start_locked(struct ifnet *ifp) 2871{ 2872 struct wpi_softc *sc = ifp->if_softc; 2873 struct ieee80211_node *ni; 2874 struct mbuf *m; 2875 2876 WPI_LOCK_ASSERT(sc); 2877 2878 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 2879 2880 IF_LOCK(&ifp->if_snd); 2881 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2882 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 2883 IF_UNLOCK(&ifp->if_snd); 2884 return; 2885 } 2886 IF_UNLOCK(&ifp->if_snd); 2887 2888 for (;;) { 2889 if (sc->qfullmsk != 0) { 2890 IF_LOCK(&ifp->if_snd); 2891 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2892 IF_UNLOCK(&ifp->if_snd); 2893 break; 2894 } 2895 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2896 if (m == NULL) 2897 break; 2898 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 2899 if (wpi_tx_data(sc, m, ni) != 0) { 2900 WPI_UNLOCK(sc); 2901 ieee80211_free_node(ni); 2902 WPI_LOCK(sc); 2903 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2904 } 2905 } 2906 2907 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 2908} 2909 2910static void 2911wpi_start_task(void *arg0, int pending) 2912{ 2913 struct wpi_softc *sc = arg0; 2914 struct ifnet *ifp = sc->sc_ifp; 2915 2916 wpi_start(ifp); 2917} 2918 2919static void 2920wpi_watchdog_rfkill(void *arg) 2921{ 2922 struct wpi_softc *sc = arg; 2923 struct ifnet *ifp = sc->sc_ifp; 2924 struct ieee80211com *ic = ifp->if_l2com; 2925 2926 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n"); 2927 2928 /* No need to lock firmware memory. */ 2929 if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) { 2930 /* Radio kill switch is still off. */ 2931 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 2932 sc); 2933 } else 2934 ieee80211_runtask(ic, &sc->sc_radioon_task); 2935} 2936 2937/** 2938 * Called every second, wpi_watchdog used by the watch dog timer 2939 * to check that the card is still alive 2940 */ 2941static void 2942wpi_watchdog(void *arg) 2943{ 2944 struct wpi_softc *sc = arg; 2945 struct ifnet *ifp = sc->sc_ifp; 2946 struct ieee80211com *ic = ifp->if_l2com; 2947 2948 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "Watchdog: tick\n"); 2949 2950 if (sc->sc_tx_timer > 0) { 2951 if (--sc->sc_tx_timer == 0) { 2952 if_printf(ifp, "device timeout\n"); 2953 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2954 ieee80211_runtask(ic, &sc->sc_reinittask); 2955 } 2956 } 2957 2958 if (sc->sc_scan_timer > 0) { 2959 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2960 if (--sc->sc_scan_timer == 0 && vap != NULL) { 2961 if_printf(ifp, "scan timeout\n"); 2962 ieee80211_cancel_scan(vap); 2963 ieee80211_runtask(ic, &sc->sc_reinittask); 2964 } 2965 } 2966 2967 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2968 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2969} 2970 2971static int 2972wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2973{ 2974 struct wpi_softc *sc = ifp->if_softc; 2975 struct ieee80211com *ic = ifp->if_l2com; 2976 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2977 struct ifreq *ifr = (struct ifreq *) data; 2978 int error = 0; 2979 2980 switch (cmd) { 2981 case SIOCGIFADDR: 2982 error = ether_ioctl(ifp, cmd, data); 2983 break; 2984 case SIOCSIFFLAGS: 2985 if (ifp->if_flags & IFF_UP) { 2986 wpi_init(sc); 2987 2988 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 && 2989 vap != NULL) 2990 ieee80211_stop(vap); 2991 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 2992 wpi_stop(sc); 2993 break; 2994 case SIOCGIFMEDIA: 2995 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2996 break; 2997 default: 2998 error = EINVAL; 2999 break; 3000 } 3001 return error; 3002} 3003 3004/* 3005 * Send a command to the firmware. 3006 */ 3007static int 3008wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size, 3009 int async) 3010{ 3011 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 3012 struct wpi_tx_desc *desc; 3013 struct wpi_tx_data *data; 3014 struct wpi_tx_cmd *cmd; 3015 struct mbuf *m; 3016 bus_addr_t paddr; 3017 int totlen, error; 3018 3019 WPI_TXQ_LOCK(sc); 3020 3021 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3022 3023 if (sc->txq_active == 0) { 3024 /* wpi_stop() was called */ 3025 error = 0; 3026 goto fail; 3027 } 3028 3029 if (async == 0) 3030 WPI_LOCK_ASSERT(sc); 3031 3032 DPRINTF(sc, WPI_DEBUG_CMD, "%s: cmd %s size %zu async %d\n", 3033 __func__, wpi_cmd_str(code), size, async); 3034 3035 desc = &ring->desc[ring->cur]; 3036 data = &ring->data[ring->cur]; 3037 totlen = 4 + size; 3038 3039 if (size > sizeof cmd->data) { 3040 /* Command is too large to fit in a descriptor. */ 3041 if (totlen > MCLBYTES) { 3042 error = EINVAL; 3043 goto fail; 3044 } 3045 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 3046 if (m == NULL) { 3047 error = ENOMEM; 3048 goto fail; 3049 } 3050 cmd = mtod(m, struct wpi_tx_cmd *); 3051 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 3052 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 3053 if (error != 0) { 3054 m_freem(m); 3055 goto fail; 3056 } 3057 data->m = m; 3058 } else { 3059 cmd = &ring->cmd[ring->cur]; 3060 paddr = data->cmd_paddr; 3061 } 3062 3063 cmd->code = code; 3064 cmd->flags = 0; 3065 cmd->qid = ring->qid; 3066 cmd->idx = ring->cur; 3067 memcpy(cmd->data, buf, size); 3068 3069 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 3070 desc->segs[0].addr = htole32(paddr); 3071 desc->segs[0].len = htole32(totlen); 3072 3073 if (size > sizeof cmd->data) { 3074 bus_dmamap_sync(ring->data_dmat, data->map, 3075 BUS_DMASYNC_PREWRITE); 3076 } else { 3077 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 3078 BUS_DMASYNC_PREWRITE); 3079 } 3080 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 3081 BUS_DMASYNC_PREWRITE); 3082 3083 /* Kick command ring. */ 3084 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 3085 wpi_update_tx_ring(sc, ring); 3086 3087 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3088 3089 WPI_TXQ_UNLOCK(sc); 3090 3091 if (async) 3092 return 0; 3093 3094 return mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 3095 3096fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3097 3098 WPI_TXQ_UNLOCK(sc); 3099 3100 return error; 3101} 3102 3103/* 3104 * Configure HW multi-rate retries. 3105 */ 3106static int 3107wpi_mrr_setup(struct wpi_softc *sc) 3108{ 3109 struct ifnet *ifp = sc->sc_ifp; 3110 struct ieee80211com *ic = ifp->if_l2com; 3111 struct wpi_mrr_setup mrr; 3112 int i, error; 3113 3114 /* CCK rates (not used with 802.11a). */ 3115 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 3116 mrr.rates[i].flags = 0; 3117 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3118 /* Fallback to the immediate lower CCK rate (if any.) */ 3119 mrr.rates[i].next = 3120 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 3121 /* Try one time at this rate before falling back to "next". */ 3122 mrr.rates[i].ntries = 1; 3123 } 3124 /* OFDM rates (not used with 802.11b). */ 3125 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 3126 mrr.rates[i].flags = 0; 3127 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3128 /* Fallback to the immediate lower rate (if any.) */ 3129 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 3130 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 3131 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 3132 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 3133 i - 1; 3134 /* Try one time at this rate before falling back to "next". */ 3135 mrr.rates[i].ntries = 1; 3136 } 3137 /* Setup MRR for control frames. */ 3138 mrr.which = htole32(WPI_MRR_CTL); 3139 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3140 if (error != 0) { 3141 device_printf(sc->sc_dev, 3142 "could not setup MRR for control frames\n"); 3143 return error; 3144 } 3145 /* Setup MRR for data frames. */ 3146 mrr.which = htole32(WPI_MRR_DATA); 3147 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3148 if (error != 0) { 3149 device_printf(sc->sc_dev, 3150 "could not setup MRR for data frames\n"); 3151 return error; 3152 } 3153 return 0; 3154} 3155 3156static int 3157wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3158{ 3159 struct ieee80211com *ic = ni->ni_ic; 3160 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 3161 struct wpi_node *wn = WPI_NODE(ni); 3162 struct wpi_node_info node; 3163 int error; 3164 3165 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3166 3167 if (wn->id == WPI_ID_UNDEFINED) 3168 return EINVAL; 3169 3170 memset(&node, 0, sizeof node); 3171 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3172 node.id = wn->id; 3173 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3174 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3175 node.action = htole32(WPI_ACTION_SET_RATE); 3176 node.antenna = WPI_ANTENNA_BOTH; 3177 3178 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding node %d (%s)\n", __func__, 3179 wn->id, ether_sprintf(ni->ni_macaddr)); 3180 3181 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 3182 if (error != 0) { 3183 device_printf(sc->sc_dev, 3184 "%s: wpi_cmd() call failed with error code %d\n", __func__, 3185 error); 3186 return error; 3187 } 3188 3189 if (wvp->wv_gtk != 0) { 3190 error = wpi_set_global_keys(ni); 3191 if (error != 0) { 3192 device_printf(sc->sc_dev, 3193 "%s: error while setting global keys\n", __func__); 3194 return ENXIO; 3195 } 3196 } 3197 3198 return 0; 3199} 3200 3201/* 3202 * Broadcast node is used to send group-addressed and management frames. 3203 */ 3204static int 3205wpi_add_broadcast_node(struct wpi_softc *sc, int async) 3206{ 3207 struct ifnet *ifp = sc->sc_ifp; 3208 struct ieee80211com *ic = ifp->if_l2com; 3209 struct wpi_node_info node; 3210 3211 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3212 3213 memset(&node, 0, sizeof node); 3214 IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr); 3215 node.id = WPI_ID_BROADCAST; 3216 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3217 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3218 node.action = htole32(WPI_ACTION_SET_RATE); 3219 node.antenna = WPI_ANTENNA_BOTH; 3220 3221 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding broadcast node\n", __func__); 3222 3223 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 3224} 3225 3226static int 3227wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3228{ 3229 struct wpi_node *wn = WPI_NODE(ni); 3230 int error; 3231 3232 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3233 3234 wn->id = wpi_add_node_entry_sta(sc); 3235 3236 if ((error = wpi_add_node(sc, ni)) != 0) { 3237 wpi_del_node_entry(sc, wn->id); 3238 wn->id = WPI_ID_UNDEFINED; 3239 return error; 3240 } 3241 3242 return 0; 3243} 3244 3245static int 3246wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3247{ 3248 struct wpi_node *wn = WPI_NODE(ni); 3249 int error; 3250 3251 KASSERT(wn->id == WPI_ID_UNDEFINED, 3252 ("the node %d was added before", wn->id)); 3253 3254 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3255 3256 if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) { 3257 device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__); 3258 return ENOMEM; 3259 } 3260 3261 if ((error = wpi_add_node(sc, ni)) != 0) { 3262 wpi_del_node_entry(sc, wn->id); 3263 wn->id = WPI_ID_UNDEFINED; 3264 return error; 3265 } 3266 3267 return 0; 3268} 3269 3270static void 3271wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3272{ 3273 struct wpi_node *wn = WPI_NODE(ni); 3274 struct wpi_cmd_del_node node; 3275 int error; 3276 3277 KASSERT(wn->id != WPI_ID_UNDEFINED, ("undefined node id passed")); 3278 3279 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3280 3281 memset(&node, 0, sizeof node); 3282 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3283 node.count = 1; 3284 3285 DPRINTF(sc, WPI_DEBUG_NODE, "%s: deleting node %d (%s)\n", __func__, 3286 wn->id, ether_sprintf(ni->ni_macaddr)); 3287 3288 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3289 if (error != 0) { 3290 device_printf(sc->sc_dev, 3291 "%s: could not delete node %u, error %d\n", __func__, 3292 wn->id, error); 3293 } 3294} 3295 3296static int 3297wpi_updateedca(struct ieee80211com *ic) 3298{ 3299#define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3300 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3301 struct wpi_edca_params cmd; 3302 int aci, error; 3303 3304 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3305 3306 memset(&cmd, 0, sizeof cmd); 3307 cmd.flags = htole32(WPI_EDCA_UPDATE); 3308 for (aci = 0; aci < WME_NUM_AC; aci++) { 3309 const struct wmeParams *ac = 3310 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 3311 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3312 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3313 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3314 cmd.ac[aci].txoplimit = 3315 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3316 3317 DPRINTF(sc, WPI_DEBUG_EDCA, 3318 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3319 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3320 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3321 cmd.ac[aci].txoplimit); 3322 } 3323 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3324 3325 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3326 3327 return error; 3328#undef WPI_EXP2 3329} 3330 3331static void 3332wpi_set_promisc(struct wpi_softc *sc) 3333{ 3334 struct ifnet *ifp = sc->sc_ifp; 3335 uint32_t promisc_filter; 3336 3337 promisc_filter = WPI_FILTER_PROMISC | WPI_FILTER_CTL; 3338 3339 if (ifp->if_flags & IFF_PROMISC) 3340 sc->rxon.filter |= htole32(promisc_filter); 3341 else 3342 sc->rxon.filter &= ~htole32(promisc_filter); 3343} 3344 3345static void 3346wpi_update_promisc(struct ifnet *ifp) 3347{ 3348 struct wpi_softc *sc = ifp->if_softc; 3349 3350 WPI_LOCK(sc); 3351 wpi_set_promisc(sc); 3352 3353 if (wpi_send_rxon(sc, 1, 1) != 0) { 3354 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3355 __func__); 3356 } 3357 WPI_UNLOCK(sc); 3358} 3359 3360static void 3361wpi_update_mcast(struct ifnet *ifp) 3362{ 3363 /* Ignore */ 3364} 3365 3366static void 3367wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3368{ 3369 struct wpi_cmd_led led; 3370 3371 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3372 3373 led.which = which; 3374 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3375 led.off = off; 3376 led.on = on; 3377 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3378} 3379 3380static int 3381wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3382{ 3383 struct wpi_cmd_timing cmd; 3384 uint64_t val, mod; 3385 3386 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3387 3388 memset(&cmd, 0, sizeof cmd); 3389 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3390 cmd.bintval = htole16(ni->ni_intval); 3391 cmd.lintval = htole16(10); 3392 3393 /* Compute remaining time until next beacon. */ 3394 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3395 mod = le64toh(cmd.tstamp) % val; 3396 cmd.binitval = htole32((uint32_t)(val - mod)); 3397 3398 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3399 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3400 3401 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3402} 3403 3404/* 3405 * This function is called periodically (every 60 seconds) to adjust output 3406 * power to temperature changes. 3407 */ 3408static void 3409wpi_power_calibration(struct wpi_softc *sc) 3410{ 3411 int temp; 3412 3413 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3414 3415 /* Update sensor data. */ 3416 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3417 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3418 3419 /* Sanity-check read value. */ 3420 if (temp < -260 || temp > 25) { 3421 /* This can't be correct, ignore. */ 3422 DPRINTF(sc, WPI_DEBUG_TEMP, 3423 "out-of-range temperature reported: %d\n", temp); 3424 return; 3425 } 3426 3427 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3428 3429 /* Adjust Tx power if need be. */ 3430 if (abs(temp - sc->temp) <= 6) 3431 return; 3432 3433 sc->temp = temp; 3434 3435 if (wpi_set_txpower(sc, 1) != 0) { 3436 /* just warn, too bad for the automatic calibration... */ 3437 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3438 } 3439} 3440 3441/* 3442 * Set TX power for current channel. 3443 */ 3444static int 3445wpi_set_txpower(struct wpi_softc *sc, int async) 3446{ 3447 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3448 struct ieee80211_channel *ch; 3449 struct wpi_power_group *group; 3450 struct wpi_cmd_txpower cmd; 3451 uint8_t chan; 3452 int idx, i; 3453 3454 /* Retrieve current channel from last RXON. */ 3455 chan = sc->rxon.chan; 3456 ch = &ic->ic_channels[chan]; 3457 3458 /* Find the TX power group to which this channel belongs. */ 3459 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3460 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3461 if (chan <= group->chan) 3462 break; 3463 } else 3464 group = &sc->groups[0]; 3465 3466 memset(&cmd, 0, sizeof cmd); 3467 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1; 3468 cmd.chan = htole16(chan); 3469 3470 /* Set TX power for all OFDM and CCK rates. */ 3471 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3472 /* Retrieve TX power for this channel/rate. */ 3473 idx = wpi_get_power_index(sc, group, ch, i); 3474 3475 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3476 3477 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3478 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3479 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3480 } else { 3481 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3482 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3483 } 3484 DPRINTF(sc, WPI_DEBUG_TEMP, 3485 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3486 } 3487 3488 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3489} 3490 3491/* 3492 * Determine Tx power index for a given channel/rate combination. 3493 * This takes into account the regulatory information from EEPROM and the 3494 * current temperature. 3495 */ 3496static int 3497wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3498 struct ieee80211_channel *c, int ridx) 3499{ 3500/* Fixed-point arithmetic division using a n-bit fractional part. */ 3501#define fdivround(a, b, n) \ 3502 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3503 3504/* Linear interpolation. */ 3505#define interpolate(x, x1, y1, x2, y2, n) \ 3506 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3507 3508 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3509 struct wpi_power_sample *sample; 3510 int pwr, idx; 3511 u_int chan; 3512 3513 /* Get channel number. */ 3514 chan = ieee80211_chan2ieee(ic, c); 3515 3516 /* Default TX power is group maximum TX power minus 3dB. */ 3517 pwr = group->maxpwr / 2; 3518 3519 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3520 switch (ridx) { 3521 case WPI_RIDX_OFDM36: 3522 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3523 break; 3524 case WPI_RIDX_OFDM48: 3525 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3526 break; 3527 case WPI_RIDX_OFDM54: 3528 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3529 break; 3530 } 3531 3532 /* Never exceed the channel maximum allowed TX power. */ 3533 pwr = min(pwr, sc->maxpwr[chan]); 3534 3535 /* Retrieve TX power index into gain tables from samples. */ 3536 for (sample = group->samples; sample < &group->samples[3]; sample++) 3537 if (pwr > sample[1].power) 3538 break; 3539 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3540 idx = interpolate(pwr, sample[0].power, sample[0].index, 3541 sample[1].power, sample[1].index, 19); 3542 3543 /*- 3544 * Adjust power index based on current temperature: 3545 * - if cooler than factory-calibrated: decrease output power 3546 * - if warmer than factory-calibrated: increase output power 3547 */ 3548 idx -= (sc->temp - group->temp) * 11 / 100; 3549 3550 /* Decrease TX power for CCK rates (-5dB). */ 3551 if (ridx >= WPI_RIDX_CCK1) 3552 idx += 10; 3553 3554 /* Make sure idx stays in a valid range. */ 3555 if (idx < 0) 3556 return 0; 3557 if (idx > WPI_MAX_PWR_INDEX) 3558 return WPI_MAX_PWR_INDEX; 3559 return idx; 3560 3561#undef interpolate 3562#undef fdivround 3563} 3564 3565/* 3566 * Set STA mode power saving level (between 0 and 5). 3567 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3568 */ 3569static int 3570wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3571{ 3572 struct wpi_pmgt_cmd cmd; 3573 const struct wpi_pmgt *pmgt; 3574 uint32_t max, skip_dtim; 3575 uint32_t reg; 3576 int i; 3577 3578 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3579 "%s: dtim=%d, level=%d, async=%d\n", 3580 __func__, dtim, level, async); 3581 3582 /* Select which PS parameters to use. */ 3583 if (dtim <= 10) 3584 pmgt = &wpi_pmgt[0][level]; 3585 else 3586 pmgt = &wpi_pmgt[1][level]; 3587 3588 memset(&cmd, 0, sizeof cmd); 3589 if (level != 0) /* not CAM */ 3590 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3591 /* Retrieve PCIe Active State Power Management (ASPM). */ 3592 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 3593 if (!(reg & 0x1)) /* L0s Entry disabled. */ 3594 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3595 3596 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3597 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3598 3599 if (dtim == 0) { 3600 dtim = 1; 3601 skip_dtim = 0; 3602 } else 3603 skip_dtim = pmgt->skip_dtim; 3604 3605 if (skip_dtim != 0) { 3606 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3607 max = pmgt->intval[4]; 3608 if (max == (uint32_t)-1) 3609 max = dtim * (skip_dtim + 1); 3610 else if (max > dtim) 3611 max = (max / dtim) * dtim; 3612 } else 3613 max = dtim; 3614 3615 for (i = 0; i < 5; i++) 3616 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3617 3618 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3619} 3620 3621static int 3622wpi_send_btcoex(struct wpi_softc *sc) 3623{ 3624 struct wpi_bluetooth cmd; 3625 3626 memset(&cmd, 0, sizeof cmd); 3627 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3628 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3629 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3630 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3631 __func__); 3632 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3633} 3634 3635static int 3636wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3637{ 3638 int error; 3639 3640 if (assoc && (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3641 struct wpi_assoc rxon_assoc; 3642 3643 rxon_assoc.flags = sc->rxon.flags; 3644 rxon_assoc.filter = sc->rxon.filter; 3645 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3646 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3647 rxon_assoc.reserved = 0; 3648 3649 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3650 sizeof (struct wpi_assoc), async); 3651 if (error != 0) { 3652 device_printf(sc->sc_dev, 3653 "RXON_ASSOC command failed, error %d\n", error); 3654 return error; 3655 } 3656 } else { 3657 if (async) { 3658 WPI_NT_LOCK(sc); 3659 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3660 sizeof (struct wpi_rxon), async); 3661 if (error == 0) 3662 wpi_clear_node_table(sc); 3663 WPI_NT_UNLOCK(sc); 3664 } else { 3665 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3666 sizeof (struct wpi_rxon), async); 3667 if (error == 0) 3668 wpi_clear_node_table(sc); 3669 } 3670 3671 if (error != 0) { 3672 device_printf(sc->sc_dev, 3673 "RXON command failed, error %d\n", error); 3674 return error; 3675 } 3676 3677 /* Add broadcast node. */ 3678 error = wpi_add_broadcast_node(sc, async); 3679 if (error != 0) { 3680 device_printf(sc->sc_dev, 3681 "could not add broadcast node, error %d\n", error); 3682 return error; 3683 } 3684 } 3685 3686 /* Configuration has changed, set Tx power accordingly. */ 3687 if ((error = wpi_set_txpower(sc, async)) != 0) { 3688 device_printf(sc->sc_dev, 3689 "%s: could not set TX power, error %d\n", __func__, error); 3690 return error; 3691 } 3692 3693 return 0; 3694} 3695 3696/** 3697 * Configure the card to listen to a particular channel, this transisions the 3698 * card in to being able to receive frames from remote devices. 3699 */ 3700static int 3701wpi_config(struct wpi_softc *sc) 3702{ 3703 struct ifnet *ifp = sc->sc_ifp; 3704 struct ieee80211com *ic = ifp->if_l2com; 3705 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3706 uint32_t flags; 3707 int error; 3708 3709 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3710 3711 /* Set power saving level to CAM during initialization. */ 3712 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3713 device_printf(sc->sc_dev, 3714 "%s: could not set power saving level\n", __func__); 3715 return error; 3716 } 3717 3718 /* Configure bluetooth coexistence. */ 3719 if ((error = wpi_send_btcoex(sc)) != 0) { 3720 device_printf(sc->sc_dev, 3721 "could not configure bluetooth coexistence\n"); 3722 return error; 3723 } 3724 3725 /* Configure adapter. */ 3726 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3727 IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr); 3728 3729 /* Set default channel. */ 3730 sc->rxon.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3731 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3732 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 3733 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3734 3735 sc->rxon.filter = WPI_FILTER_MULTICAST; 3736 switch (ic->ic_opmode) { 3737 case IEEE80211_M_STA: 3738 sc->rxon.mode = WPI_MODE_STA; 3739 break; 3740 case IEEE80211_M_IBSS: 3741 sc->rxon.mode = WPI_MODE_IBSS; 3742 sc->rxon.filter |= WPI_FILTER_BEACON; 3743 break; 3744 /* XXX workaround for passive channels selection */ 3745 case IEEE80211_M_AHDEMO: 3746 case IEEE80211_M_HOSTAP: 3747 sc->rxon.mode = WPI_MODE_HOSTAP; 3748 break; 3749 case IEEE80211_M_MONITOR: 3750 sc->rxon.mode = WPI_MODE_MONITOR; 3751 break; 3752 default: 3753 device_printf(sc->sc_dev, "unknown opmode %d\n", 3754 ic->ic_opmode); 3755 return EINVAL; 3756 } 3757 sc->rxon.filter = htole32(sc->rxon.filter); 3758 wpi_set_promisc(sc); 3759 sc->rxon.cck_mask = 0x0f; /* not yet negotiated */ 3760 sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */ 3761 3762 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) { 3763 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3764 __func__); 3765 return error; 3766 } 3767 3768 /* Setup rate scalling. */ 3769 if ((error = wpi_mrr_setup(sc)) != 0) { 3770 device_printf(sc->sc_dev, "could not setup MRR, error %d\n", 3771 error); 3772 return error; 3773 } 3774 3775 /* Disable beacon notifications (unused). */ 3776 flags = WPI_STATISTICS_BEACON_DISABLE; 3777 error = wpi_cmd(sc, WPI_CMD_GET_STATISTICS, &flags, sizeof flags, 1); 3778 if (error != 0) { 3779 device_printf(sc->sc_dev, 3780 "could not disable beacon statistics, error %d\n", error); 3781 return error; 3782 } 3783 3784 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3785 3786 return 0; 3787} 3788 3789static uint16_t 3790wpi_get_active_dwell_time(struct wpi_softc *sc, 3791 struct ieee80211_channel *c, uint8_t n_probes) 3792{ 3793 /* No channel? Default to 2GHz settings. */ 3794 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) { 3795 return (WPI_ACTIVE_DWELL_TIME_2GHZ + 3796 WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1)); 3797 } 3798 3799 /* 5GHz dwell time. */ 3800 return (WPI_ACTIVE_DWELL_TIME_5GHZ + 3801 WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1)); 3802} 3803 3804/* 3805 * Limit the total dwell time to 85% of the beacon interval. 3806 * 3807 * Returns the dwell time in milliseconds. 3808 */ 3809static uint16_t 3810wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time) 3811{ 3812 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3813 struct ieee80211vap *vap = NULL; 3814 int bintval = 0; 3815 3816 /* bintval is in TU (1.024mS) */ 3817 if (! TAILQ_EMPTY(&ic->ic_vaps)) { 3818 vap = TAILQ_FIRST(&ic->ic_vaps); 3819 bintval = vap->iv_bss->ni_intval; 3820 } 3821 3822 /* 3823 * If it's non-zero, we should calculate the minimum of 3824 * it and the DWELL_BASE. 3825 * 3826 * XXX Yes, the math should take into account that bintval 3827 * is 1.024mS, not 1mS.. 3828 */ 3829 if (bintval > 0) { 3830 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 3831 bintval); 3832 return (MIN(WPI_PASSIVE_DWELL_BASE, ((bintval * 85) / 100))); 3833 } 3834 3835 /* No association context? Default. */ 3836 return (WPI_PASSIVE_DWELL_BASE); 3837} 3838 3839static uint16_t 3840wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 3841{ 3842 uint16_t passive; 3843 3844 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 3845 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 3846 else 3847 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 3848 3849 /* Clamp to the beacon interval if we're associated. */ 3850 return (wpi_limit_dwell(sc, passive)); 3851} 3852 3853/* 3854 * Send a scan request to the firmware. 3855 */ 3856static int 3857wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 3858{ 3859 struct ifnet *ifp = sc->sc_ifp; 3860 struct ieee80211com *ic = ifp->if_l2com; 3861 struct ieee80211_scan_state *ss = ic->ic_scan; 3862 struct ieee80211vap *vap = ss->ss_vap; 3863 struct wpi_scan_hdr *hdr; 3864 struct wpi_cmd_data *tx; 3865 struct wpi_scan_essid *essids; 3866 struct wpi_scan_chan *chan; 3867 struct ieee80211_frame *wh; 3868 struct ieee80211_rateset *rs; 3869 uint16_t dwell_active, dwell_passive; 3870 uint8_t *buf, *frm; 3871 int buflen, error, i, nssid; 3872 3873 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3874 3875 /* 3876 * We are absolutely not allowed to send a scan command when another 3877 * scan command is pending. 3878 */ 3879 if (sc->sc_scan_timer) { 3880 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 3881 __func__); 3882 3883 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3884 3885 return (EAGAIN); 3886 } 3887 3888 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 3889 if (buf == NULL) { 3890 device_printf(sc->sc_dev, 3891 "%s: could not allocate buffer for scan command\n", 3892 __func__); 3893 error = ENOMEM; 3894 goto fail; 3895 } 3896 hdr = (struct wpi_scan_hdr *)buf; 3897 3898 /* 3899 * Move to the next channel if no packets are received within 10 msecs 3900 * after sending the probe request. 3901 */ 3902 hdr->quiet_time = htole16(10); /* timeout in milliseconds */ 3903 hdr->quiet_threshold = htole16(1); /* min # of packets */ 3904 /* 3905 * Max needs to be greater than active and passive and quiet! 3906 * It's also in microseconds! 3907 */ 3908 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 3909 hdr->pause_svc = htole32((4 << 24) | 3910 (100 * IEEE80211_DUR_TU)); /* Hardcode for now */ 3911 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 3912 3913 tx = (struct wpi_cmd_data *)(hdr + 1); 3914 tx->flags = htole32(WPI_TX_AUTO_SEQ); 3915 tx->id = WPI_ID_BROADCAST; 3916 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 3917 3918 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3919 /* Send probe requests at 6Mbps. */ 3920 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 3921 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 3922 } else { 3923 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 3924 /* Send probe requests at 1Mbps. */ 3925 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3926 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 3927 } 3928 3929 essids = (struct wpi_scan_essid *)(tx + 1); 3930 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 3931 for (i = 0; i < nssid; i++) { 3932 essids[i].id = IEEE80211_ELEMID_SSID; 3933 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 3934 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 3935#ifdef WPI_DEBUG 3936 if (sc->sc_debug & WPI_DEBUG_SCAN) { 3937 printf("Scanning Essid: "); 3938 ieee80211_print_essid(essids[i].data, essids[i].len); 3939 printf("\n"); 3940 } 3941#endif 3942 } 3943 3944 /* 3945 * Build a probe request frame. Most of the following code is a 3946 * copy & paste of what is done in net80211. 3947 */ 3948 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 3949 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 3950 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 3951 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 3952 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 3953 IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr); 3954 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 3955 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 3956 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 3957 3958 frm = (uint8_t *)(wh + 1); 3959 frm = ieee80211_add_ssid(frm, NULL, 0); 3960 frm = ieee80211_add_rates(frm, rs); 3961 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 3962 frm = ieee80211_add_xrates(frm, rs); 3963 3964 /* Set length of probe request. */ 3965 tx->len = htole16(frm - (uint8_t *)wh); 3966 3967 /* 3968 * Construct information about the channel that we 3969 * want to scan. The firmware expects this to be directly 3970 * after the scan probe request 3971 */ 3972 chan = (struct wpi_scan_chan *)frm; 3973 chan->chan = htole16(ieee80211_chan2ieee(ic, c)); 3974 chan->flags = 0; 3975 if (nssid) { 3976 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 3977 chan->flags |= WPI_CHAN_NPBREQS(nssid); 3978 } else 3979 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 3980 3981 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 3982 chan->flags |= WPI_CHAN_ACTIVE; 3983 3984 /* 3985 * Calculate the active/passive dwell times. 3986 */ 3987 3988 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 3989 dwell_passive = wpi_get_passive_dwell_time(sc, c); 3990 3991 /* Make sure they're valid. */ 3992 if (dwell_passive <= dwell_active) 3993 dwell_passive = dwell_active + 1; 3994 3995 chan->active = htole16(dwell_active); 3996 chan->passive = htole16(dwell_passive); 3997 3998 chan->dsp_gain = 0x6e; /* Default level */ 3999 4000 if (IEEE80211_IS_CHAN_5GHZ(c)) 4001 chan->rf_gain = 0x3b; 4002 else 4003 chan->rf_gain = 0x28; 4004 4005 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 4006 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 4007 4008 hdr->nchan++; 4009 chan++; 4010 4011 buflen = (uint8_t *)chan - buf; 4012 hdr->len = htole16(buflen); 4013 4014 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 4015 hdr->nchan); 4016 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 4017 free(buf, M_DEVBUF); 4018 4019 if (error != 0) 4020 goto fail; 4021 4022 sc->sc_scan_timer = 5; 4023 4024 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4025 4026 return 0; 4027 4028fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4029 4030 return error; 4031} 4032 4033static int 4034wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 4035{ 4036 struct ieee80211com *ic = vap->iv_ic; 4037 struct ieee80211_node *ni = vap->iv_bss; 4038 int error; 4039 4040 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4041 4042 /* Update adapter configuration. */ 4043 sc->rxon.associd = 0; 4044 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 4045 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4046 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 4047 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4048 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 4049 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4050 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4051 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4052 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4053 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4054 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 4055 sc->rxon.cck_mask = 0; 4056 sc->rxon.ofdm_mask = 0x15; 4057 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 4058 sc->rxon.cck_mask = 0x03; 4059 sc->rxon.ofdm_mask = 0; 4060 } else { 4061 /* Assume 802.11b/g. */ 4062 sc->rxon.cck_mask = 0x0f; 4063 sc->rxon.ofdm_mask = 0x15; 4064 } 4065 4066 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n", 4067 sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask, 4068 sc->rxon.ofdm_mask); 4069 4070 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4071 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4072 __func__); 4073 } 4074 4075 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4076 4077 return error; 4078} 4079 4080static int 4081wpi_config_beacon(struct wpi_vap *wvp) 4082{ 4083 struct ieee80211com *ic = wvp->wv_vap.iv_ic; 4084 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4085 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4086 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4087 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 4088 struct ieee80211_tim_ie *tie; 4089 struct mbuf *m; 4090 uint8_t *ptr; 4091 int error; 4092 4093 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4094 4095 WPI_VAP_LOCK_ASSERT(wvp); 4096 4097 cmd->len = htole16(bcn->m->m_pkthdr.len); 4098 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 4099 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 4100 4101 /* XXX seems to be unused */ 4102 if (*(bo->bo_tim) == IEEE80211_ELEMID_TIM) { 4103 tie = (struct ieee80211_tim_ie *) bo->bo_tim; 4104 ptr = mtod(bcn->m, uint8_t *); 4105 4106 cmd->tim = htole16(bo->bo_tim - ptr); 4107 cmd->timsz = tie->tim_len; 4108 } 4109 4110 /* Necessary for recursion in ieee80211_beacon_update(). */ 4111 m = bcn->m; 4112 bcn->m = m_dup(m, M_NOWAIT); 4113 if (bcn->m == NULL) { 4114 device_printf(sc->sc_dev, 4115 "%s: could not copy beacon frame\n", __func__); 4116 error = ENOMEM; 4117 goto end; 4118 } 4119 4120 if ((error = wpi_cmd2(sc, bcn)) != 0) { 4121 device_printf(sc->sc_dev, 4122 "%s: could not update beacon frame, error %d", __func__, 4123 error); 4124 } 4125 4126 /* Restore mbuf. */ 4127end: bcn->m = m; 4128 4129 return error; 4130} 4131 4132static int 4133wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 4134{ 4135 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 4136 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4137 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4138 struct mbuf *m; 4139 int error; 4140 4141 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4142 4143 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 4144 return EINVAL; 4145 4146 m = ieee80211_beacon_alloc(ni, bo); 4147 if (m == NULL) { 4148 device_printf(sc->sc_dev, 4149 "%s: could not allocate beacon frame\n", __func__); 4150 return ENOMEM; 4151 } 4152 4153 WPI_VAP_LOCK(wvp); 4154 if (bcn->m != NULL) 4155 m_freem(bcn->m); 4156 4157 bcn->m = m; 4158 4159 error = wpi_config_beacon(wvp); 4160 WPI_VAP_UNLOCK(wvp); 4161 4162 return error; 4163} 4164 4165static void 4166wpi_update_beacon(struct ieee80211vap *vap, int item) 4167{ 4168 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 4169 struct wpi_vap *wvp = WPI_VAP(vap); 4170 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4171 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4172 struct ieee80211_node *ni = vap->iv_bss; 4173 int mcast = 0; 4174 4175 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4176 4177 WPI_VAP_LOCK(wvp); 4178 if (bcn->m == NULL) { 4179 bcn->m = ieee80211_beacon_alloc(ni, bo); 4180 if (bcn->m == NULL) { 4181 device_printf(sc->sc_dev, 4182 "%s: could not allocate beacon frame\n", __func__); 4183 4184 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, 4185 __func__); 4186 4187 WPI_VAP_UNLOCK(wvp); 4188 return; 4189 } 4190 } 4191 WPI_VAP_UNLOCK(wvp); 4192 4193 if (item == IEEE80211_BEACON_TIM) 4194 mcast = 1; /* TODO */ 4195 4196 setbit(bo->bo_flags, item); 4197 ieee80211_beacon_update(ni, bo, bcn->m, mcast); 4198 4199 WPI_VAP_LOCK(wvp); 4200 wpi_config_beacon(wvp); 4201 WPI_VAP_UNLOCK(wvp); 4202 4203 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4204} 4205 4206static void 4207wpi_newassoc(struct ieee80211_node *ni, int isnew) 4208{ 4209 struct ieee80211vap *vap = ni->ni_vap; 4210 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4211 struct wpi_node *wn = WPI_NODE(ni); 4212 int error; 4213 4214 WPI_NT_LOCK(sc); 4215 4216 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4217 4218 if (vap->iv_opmode != IEEE80211_M_STA && wn->id == WPI_ID_UNDEFINED) { 4219 if ((error = wpi_add_ibss_node(sc, ni)) != 0) { 4220 device_printf(sc->sc_dev, 4221 "%s: could not add IBSS node, error %d\n", 4222 __func__, error); 4223 } 4224 } 4225 WPI_NT_UNLOCK(sc); 4226} 4227 4228static int 4229wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 4230{ 4231 struct ieee80211com *ic = vap->iv_ic; 4232 struct ieee80211_node *ni = vap->iv_bss; 4233 int error; 4234 4235 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4236 4237 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 4238 /* Link LED blinks while monitoring. */ 4239 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 4240 return 0; 4241 } 4242 4243 /* XXX kernel panic workaround */ 4244 if (ni->ni_chan == IEEE80211_CHAN_ANYC) { 4245 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 4246 __func__); 4247 return EINVAL; 4248 } 4249 4250 if ((error = wpi_set_timing(sc, ni)) != 0) { 4251 device_printf(sc->sc_dev, 4252 "%s: could not set timing, error %d\n", __func__, error); 4253 return error; 4254 } 4255 4256 /* Update adapter configuration. */ 4257 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4258 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 4259 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 4260 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4261 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 4262 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4263 /* Short preamble and slot time are negotiated when associating. */ 4264 sc->rxon.flags &= ~htole32(WPI_RXON_SHPREAMBLE | WPI_RXON_SHSLOT); 4265 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4266 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4267 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4268 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4269 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 4270 sc->rxon.cck_mask = 0; 4271 sc->rxon.ofdm_mask = 0x15; 4272 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 4273 sc->rxon.cck_mask = 0x03; 4274 sc->rxon.ofdm_mask = 0; 4275 } else { 4276 /* Assume 802.11b/g. */ 4277 sc->rxon.cck_mask = 0x0f; 4278 sc->rxon.ofdm_mask = 0x15; 4279 } 4280 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 4281 4282 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 4283 sc->rxon.chan, sc->rxon.flags); 4284 4285 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4286 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4287 __func__); 4288 return error; 4289 } 4290 4291 if (vap->iv_opmode == IEEE80211_M_IBSS) { 4292 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 4293 device_printf(sc->sc_dev, 4294 "%s: could not setup beacon, error %d\n", __func__, 4295 error); 4296 return error; 4297 } 4298 } 4299 4300 if (vap->iv_opmode == IEEE80211_M_STA) { 4301 /* Add BSS node. */ 4302 WPI_NT_LOCK(sc); 4303 error = wpi_add_sta_node(sc, ni); 4304 WPI_NT_UNLOCK(sc); 4305 if (error != 0) { 4306 device_printf(sc->sc_dev, 4307 "%s: could not add BSS node, error %d\n", __func__, 4308 error); 4309 return error; 4310 } 4311 } 4312 4313 /* Link LED always on while associated. */ 4314 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4315 4316 /* Start periodic calibration timer. */ 4317 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 4318 4319 /* Enable power-saving mode if requested by user. */ 4320 if ((vap->iv_flags & IEEE80211_F_PMGTON) && 4321 vap->iv_opmode != IEEE80211_M_IBSS) 4322 (void)wpi_set_pslevel(sc, 0, 3, 1); 4323 else 4324 (void)wpi_set_pslevel(sc, 0, 0, 1); 4325 4326 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4327 4328 return 0; 4329} 4330 4331static int 4332wpi_load_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4333{ 4334 const struct ieee80211_cipher *cip = k->wk_cipher; 4335 struct ieee80211vap *vap = ni->ni_vap; 4336 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4337 struct wpi_node *wn = WPI_NODE(ni); 4338 struct wpi_node_info node; 4339 uint16_t kflags; 4340 int error; 4341 4342 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4343 4344 if (wpi_check_node_entry(sc, wn->id) == 0) { 4345 device_printf(sc->sc_dev, "%s: node does not exist\n", 4346 __func__); 4347 return 0; 4348 } 4349 4350 switch (cip->ic_cipher) { 4351 case IEEE80211_CIPHER_AES_CCM: 4352 kflags = WPI_KFLAG_CCMP; 4353 break; 4354 4355 default: 4356 device_printf(sc->sc_dev, "%s: unknown cipher %d\n", __func__, 4357 cip->ic_cipher); 4358 return 0; 4359 } 4360 4361 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4362 if (k->wk_flags & IEEE80211_KEY_GROUP) 4363 kflags |= WPI_KFLAG_MULTICAST; 4364 4365 memset(&node, 0, sizeof node); 4366 node.id = wn->id; 4367 node.control = WPI_NODE_UPDATE; 4368 node.flags = WPI_FLAG_KEY_SET; 4369 node.kflags = htole16(kflags); 4370 memcpy(node.key, k->wk_key, k->wk_keylen); 4371again: 4372 DPRINTF(sc, WPI_DEBUG_KEY, 4373 "%s: setting %s key id %d for node %d (%s)\n", __func__, 4374 (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", k->wk_keyix, 4375 node.id, ether_sprintf(ni->ni_macaddr)); 4376 4377 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4378 if (error != 0) { 4379 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4380 error); 4381 return !error; 4382 } 4383 4384 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4385 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4386 kflags |= WPI_KFLAG_MULTICAST; 4387 node.kflags = htole16(kflags); 4388 4389 goto again; 4390 } 4391 4392 return 1; 4393} 4394 4395static void 4396wpi_load_key_cb(void *arg, struct ieee80211_node *ni) 4397{ 4398 const struct ieee80211_key *k = arg; 4399 struct ieee80211vap *vap = ni->ni_vap; 4400 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4401 struct wpi_node *wn = WPI_NODE(ni); 4402 int error; 4403 4404 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4405 return; 4406 4407 WPI_NT_LOCK(sc); 4408 error = wpi_load_key(ni, k); 4409 WPI_NT_UNLOCK(sc); 4410 4411 if (error == 0) { 4412 device_printf(sc->sc_dev, "%s: error while setting key\n", 4413 __func__); 4414 } 4415} 4416 4417static int 4418wpi_set_global_keys(struct ieee80211_node *ni) 4419{ 4420 struct ieee80211vap *vap = ni->ni_vap; 4421 struct ieee80211_key *wk = &vap->iv_nw_keys[0]; 4422 int error = 1; 4423 4424 for (; wk < &vap->iv_nw_keys[IEEE80211_WEP_NKID] && error; wk++) 4425 if (wk->wk_keyix != IEEE80211_KEYIX_NONE) 4426 error = wpi_load_key(ni, wk); 4427 4428 return !error; 4429} 4430 4431static int 4432wpi_del_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4433{ 4434 struct ieee80211vap *vap = ni->ni_vap; 4435 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4436 struct wpi_node *wn = WPI_NODE(ni); 4437 struct wpi_node_info node; 4438 uint16_t kflags; 4439 int error; 4440 4441 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4442 4443 if (wpi_check_node_entry(sc, wn->id) == 0) { 4444 DPRINTF(sc, WPI_DEBUG_KEY, "%s: node was removed\n", __func__); 4445 return 1; /* Nothing to do. */ 4446 } 4447 4448 kflags = WPI_KFLAG_KID(k->wk_keyix); 4449 if (k->wk_flags & IEEE80211_KEY_GROUP) 4450 kflags |= WPI_KFLAG_MULTICAST; 4451 4452 memset(&node, 0, sizeof node); 4453 node.id = wn->id; 4454 node.control = WPI_NODE_UPDATE; 4455 node.flags = WPI_FLAG_KEY_SET; 4456 node.kflags = htole16(kflags); 4457again: 4458 DPRINTF(sc, WPI_DEBUG_KEY, "%s: deleting %s key %d for node %d (%s)\n", 4459 __func__, (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", 4460 k->wk_keyix, node.id, ether_sprintf(ni->ni_macaddr)); 4461 4462 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4463 if (error != 0) { 4464 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4465 error); 4466 return !error; 4467 } 4468 4469 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4470 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4471 kflags |= WPI_KFLAG_MULTICAST; 4472 node.kflags = htole16(kflags); 4473 4474 goto again; 4475 } 4476 4477 return 1; 4478} 4479 4480static void 4481wpi_del_key_cb(void *arg, struct ieee80211_node *ni) 4482{ 4483 const struct ieee80211_key *k = arg; 4484 struct ieee80211vap *vap = ni->ni_vap; 4485 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4486 struct wpi_node *wn = WPI_NODE(ni); 4487 int error; 4488 4489 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4490 return; 4491 4492 WPI_NT_LOCK(sc); 4493 error = wpi_del_key(ni, k); 4494 WPI_NT_UNLOCK(sc); 4495 4496 if (error == 0) { 4497 device_printf(sc->sc_dev, "%s: error while deleting key\n", 4498 __func__); 4499 } 4500} 4501 4502static int 4503wpi_process_key(struct ieee80211vap *vap, const struct ieee80211_key *k, 4504 int set) 4505{ 4506 struct ieee80211com *ic = vap->iv_ic; 4507 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4508 struct wpi_vap *wvp = WPI_VAP(vap); 4509 struct ieee80211_node *ni; 4510 int error, ni_ref = 0; 4511 4512 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4513 4514 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) { 4515 /* Not for us. */ 4516 return 1; 4517 } 4518 4519 if (!(k->wk_flags & IEEE80211_KEY_RECV)) { 4520 /* XMIT keys are handled in wpi_tx_data(). */ 4521 return 1; 4522 } 4523 4524 /* Handle group keys. */ 4525 if (&vap->iv_nw_keys[0] <= k && 4526 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4527 WPI_NT_LOCK(sc); 4528 if (set) 4529 wvp->wv_gtk |= WPI_VAP_KEY(k->wk_keyix); 4530 else 4531 wvp->wv_gtk &= ~WPI_VAP_KEY(k->wk_keyix); 4532 WPI_NT_UNLOCK(sc); 4533 4534 if (vap->iv_state == IEEE80211_S_RUN) { 4535 ieee80211_iterate_nodes(&ic->ic_sta, 4536 set ? wpi_load_key_cb : wpi_del_key_cb, (void *)k); 4537 } 4538 4539 return 1; 4540 } 4541 4542 switch (vap->iv_opmode) { 4543 case IEEE80211_M_STA: 4544 ni = vap->iv_bss; 4545 break; 4546 4547 case IEEE80211_M_IBSS: 4548 case IEEE80211_M_AHDEMO: 4549 ni = ieee80211_find_vap_node(&ic->ic_sta, vap, k->wk_macaddr); 4550 if (ni == NULL) 4551 return 0; /* should not happen */ 4552 4553 ni_ref = 1; 4554 break; 4555 4556 default: 4557 device_printf(sc->sc_dev, "%s: unknown opmode %d\n", __func__, 4558 vap->iv_opmode); 4559 return 0; 4560 } 4561 4562 WPI_NT_LOCK(sc); 4563 if (set) 4564 error = wpi_load_key(ni, k); 4565 else 4566 error = wpi_del_key(ni, k); 4567 WPI_NT_UNLOCK(sc); 4568 4569 if (ni_ref) 4570 ieee80211_node_decref(ni); 4571 4572 return error; 4573} 4574 4575static int 4576wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k, 4577 const uint8_t mac[IEEE80211_ADDR_LEN]) 4578{ 4579 return wpi_process_key(vap, k, 1); 4580} 4581 4582static int 4583wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4584{ 4585 return wpi_process_key(vap, k, 0); 4586} 4587 4588/* 4589 * This function is called after the runtime firmware notifies us of its 4590 * readiness (called in a process context). 4591 */ 4592static int 4593wpi_post_alive(struct wpi_softc *sc) 4594{ 4595 int ntries, error; 4596 4597 /* Check (again) that the radio is not disabled. */ 4598 if ((error = wpi_nic_lock(sc)) != 0) 4599 return error; 4600 4601 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4602 4603 /* NB: Runtime firmware must be up and running. */ 4604 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4605 device_printf(sc->sc_dev, 4606 "RF switch: radio disabled (%s)\n", __func__); 4607 wpi_nic_unlock(sc); 4608 return EPERM; /* :-) */ 4609 } 4610 wpi_nic_unlock(sc); 4611 4612 /* Wait for thermal sensor to calibrate. */ 4613 for (ntries = 0; ntries < 1000; ntries++) { 4614 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4615 break; 4616 DELAY(10); 4617 } 4618 4619 if (ntries == 1000) { 4620 device_printf(sc->sc_dev, 4621 "timeout waiting for thermal sensor calibration\n"); 4622 return ETIMEDOUT; 4623 } 4624 4625 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4626 return 0; 4627} 4628 4629/* 4630 * The firmware boot code is small and is intended to be copied directly into 4631 * the NIC internal memory (no DMA transfer). 4632 */ 4633static int 4634wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 4635{ 4636 int error, ntries; 4637 4638 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4639 4640 size /= sizeof (uint32_t); 4641 4642 if ((error = wpi_nic_lock(sc)) != 0) 4643 return error; 4644 4645 /* Copy microcode image into NIC memory. */ 4646 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4647 (const uint32_t *)ucode, size); 4648 4649 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4650 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4651 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4652 4653 /* Start boot load now. */ 4654 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4655 4656 /* Wait for transfer to complete. */ 4657 for (ntries = 0; ntries < 1000; ntries++) { 4658 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4659 DPRINTF(sc, WPI_DEBUG_HW, 4660 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4661 WPI_FH_TX_STATUS_IDLE(6), 4662 status & WPI_FH_TX_STATUS_IDLE(6)); 4663 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4664 DPRINTF(sc, WPI_DEBUG_HW, 4665 "Status Match! - ntries = %d\n", ntries); 4666 break; 4667 } 4668 DELAY(10); 4669 } 4670 if (ntries == 1000) { 4671 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4672 __func__); 4673 wpi_nic_unlock(sc); 4674 return ETIMEDOUT; 4675 } 4676 4677 /* Enable boot after power up. */ 4678 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4679 4680 wpi_nic_unlock(sc); 4681 return 0; 4682} 4683 4684static int 4685wpi_load_firmware(struct wpi_softc *sc) 4686{ 4687 struct wpi_fw_info *fw = &sc->fw; 4688 struct wpi_dma_info *dma = &sc->fw_dma; 4689 int error; 4690 4691 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4692 4693 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4694 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4695 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4696 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4697 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4698 4699 /* Tell adapter where to find initialization sections. */ 4700 if ((error = wpi_nic_lock(sc)) != 0) 4701 return error; 4702 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4703 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4704 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4705 dma->paddr + WPI_FW_DATA_MAXSZ); 4706 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4707 wpi_nic_unlock(sc); 4708 4709 /* Load firmware boot code. */ 4710 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4711 if (error != 0) { 4712 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4713 __func__); 4714 return error; 4715 } 4716 4717 /* Now press "execute". */ 4718 WPI_WRITE(sc, WPI_RESET, 0); 4719 4720 /* Wait at most one second for first alive notification. */ 4721 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4722 device_printf(sc->sc_dev, 4723 "%s: timeout waiting for adapter to initialize, error %d\n", 4724 __func__, error); 4725 return error; 4726 } 4727 4728 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4729 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4730 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4731 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4732 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4733 4734 /* Tell adapter where to find runtime sections. */ 4735 if ((error = wpi_nic_lock(sc)) != 0) 4736 return error; 4737 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4738 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 4739 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4740 dma->paddr + WPI_FW_DATA_MAXSZ); 4741 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 4742 WPI_FW_UPDATED | fw->main.textsz); 4743 wpi_nic_unlock(sc); 4744 4745 return 0; 4746} 4747 4748static int 4749wpi_read_firmware(struct wpi_softc *sc) 4750{ 4751 const struct firmware *fp; 4752 struct wpi_fw_info *fw = &sc->fw; 4753 const struct wpi_firmware_hdr *hdr; 4754 int error; 4755 4756 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4757 4758 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4759 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 4760 4761 WPI_UNLOCK(sc); 4762 fp = firmware_get(WPI_FW_NAME); 4763 WPI_LOCK(sc); 4764 4765 if (fp == NULL) { 4766 device_printf(sc->sc_dev, 4767 "could not load firmware image '%s'\n", WPI_FW_NAME); 4768 return EINVAL; 4769 } 4770 4771 sc->fw_fp = fp; 4772 4773 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 4774 device_printf(sc->sc_dev, 4775 "firmware file too short: %zu bytes\n", fp->datasize); 4776 error = EINVAL; 4777 goto fail; 4778 } 4779 4780 fw->size = fp->datasize; 4781 fw->data = (const uint8_t *)fp->data; 4782 4783 /* Extract firmware header information. */ 4784 hdr = (const struct wpi_firmware_hdr *)fw->data; 4785 4786 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 4787 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 4788 4789 fw->main.textsz = le32toh(hdr->rtextsz); 4790 fw->main.datasz = le32toh(hdr->rdatasz); 4791 fw->init.textsz = le32toh(hdr->itextsz); 4792 fw->init.datasz = le32toh(hdr->idatasz); 4793 fw->boot.textsz = le32toh(hdr->btextsz); 4794 fw->boot.datasz = 0; 4795 4796 /* Sanity-check firmware header. */ 4797 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 4798 fw->main.datasz > WPI_FW_DATA_MAXSZ || 4799 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 4800 fw->init.datasz > WPI_FW_DATA_MAXSZ || 4801 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 4802 (fw->boot.textsz & 3) != 0) { 4803 device_printf(sc->sc_dev, "invalid firmware header\n"); 4804 error = EINVAL; 4805 goto fail; 4806 } 4807 4808 /* Check that all firmware sections fit. */ 4809 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 4810 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 4811 device_printf(sc->sc_dev, 4812 "firmware file too short: %zu bytes\n", fw->size); 4813 error = EINVAL; 4814 goto fail; 4815 } 4816 4817 /* Get pointers to firmware sections. */ 4818 fw->main.text = (const uint8_t *)(hdr + 1); 4819 fw->main.data = fw->main.text + fw->main.textsz; 4820 fw->init.text = fw->main.data + fw->main.datasz; 4821 fw->init.data = fw->init.text + fw->init.textsz; 4822 fw->boot.text = fw->init.data + fw->init.datasz; 4823 4824 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4825 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 4826 "runtime (text: %u, data: %u) init (text: %u, data %u) " 4827 "boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver), 4828 fw->main.textsz, fw->main.datasz, 4829 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 4830 4831 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 4832 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 4833 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 4834 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 4835 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 4836 4837 return 0; 4838 4839fail: wpi_unload_firmware(sc); 4840 return error; 4841} 4842 4843/** 4844 * Free the referenced firmware image 4845 */ 4846static void 4847wpi_unload_firmware(struct wpi_softc *sc) 4848{ 4849 if (sc->fw_fp != NULL) { 4850 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 4851 sc->fw_fp = NULL; 4852 } 4853} 4854 4855static int 4856wpi_clock_wait(struct wpi_softc *sc) 4857{ 4858 int ntries; 4859 4860 /* Set "initialization complete" bit. */ 4861 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4862 4863 /* Wait for clock stabilization. */ 4864 for (ntries = 0; ntries < 2500; ntries++) { 4865 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 4866 return 0; 4867 DELAY(100); 4868 } 4869 device_printf(sc->sc_dev, 4870 "%s: timeout waiting for clock stabilization\n", __func__); 4871 4872 return ETIMEDOUT; 4873} 4874 4875static int 4876wpi_apm_init(struct wpi_softc *sc) 4877{ 4878 uint32_t reg; 4879 int error; 4880 4881 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4882 4883 /* Disable L0s exit timer (NMI bug workaround). */ 4884 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 4885 /* Don't wait for ICH L0s (ICH bug workaround). */ 4886 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 4887 4888 /* Set FH wait threshold to max (HW bug under stress workaround). */ 4889 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 4890 4891 /* Cleanup. */ 4892 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 0x00000400); 4893 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000E00); 4894 4895 /* Retrieve PCIe Active State Power Management (ASPM). */ 4896 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 4897 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 4898 if (reg & 0x02) /* L1 Entry enabled. */ 4899 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4900 else 4901 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4902 4903 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 4904 4905 /* Wait for clock stabilization before accessing prph. */ 4906 if ((error = wpi_clock_wait(sc)) != 0) 4907 return error; 4908 4909 if ((error = wpi_nic_lock(sc)) != 0) 4910 return error; 4911 /* Enable DMA and BSM (Bootstrap State Machine). */ 4912 wpi_prph_write(sc, WPI_APMG_CLK_EN, 4913 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 4914 DELAY(20); 4915 /* Disable L1-Active. */ 4916 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 4917 wpi_nic_unlock(sc); 4918 4919 return 0; 4920} 4921 4922static void 4923wpi_apm_stop_master(struct wpi_softc *sc) 4924{ 4925 int ntries; 4926 4927 /* Stop busmaster DMA activity. */ 4928 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 4929 4930 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 4931 WPI_GP_CNTRL_MAC_PS) 4932 return; /* Already asleep. */ 4933 4934 for (ntries = 0; ntries < 100; ntries++) { 4935 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 4936 return; 4937 DELAY(10); 4938 } 4939 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", 4940 __func__); 4941} 4942 4943static void 4944wpi_apm_stop(struct wpi_softc *sc) 4945{ 4946 wpi_apm_stop_master(sc); 4947 4948 /* Reset the entire device. */ 4949 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 4950 DELAY(10); 4951 /* Clear "initialization complete" bit. */ 4952 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4953} 4954 4955static void 4956wpi_nic_config(struct wpi_softc *sc) 4957{ 4958 uint32_t rev; 4959 4960 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4961 4962 /* voodoo from the Linux "driver".. */ 4963 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 4964 if ((rev & 0xc0) == 0x40) 4965 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 4966 else if (!(rev & 0x80)) 4967 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 4968 4969 if (sc->cap == 0x80) 4970 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 4971 4972 if ((sc->rev & 0xf0) == 0xd0) 4973 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4974 else 4975 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4976 4977 if (sc->type > 1) 4978 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 4979} 4980 4981static int 4982wpi_hw_init(struct wpi_softc *sc) 4983{ 4984 int chnl, ntries, error; 4985 4986 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4987 4988 /* Clear pending interrupts. */ 4989 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4990 4991 if ((error = wpi_apm_init(sc)) != 0) { 4992 device_printf(sc->sc_dev, 4993 "%s: could not power ON adapter, error %d\n", __func__, 4994 error); 4995 return error; 4996 } 4997 4998 /* Select VMAIN power source. */ 4999 if ((error = wpi_nic_lock(sc)) != 0) 5000 return error; 5001 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 5002 wpi_nic_unlock(sc); 5003 /* Spin until VMAIN gets selected. */ 5004 for (ntries = 0; ntries < 5000; ntries++) { 5005 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 5006 break; 5007 DELAY(10); 5008 } 5009 if (ntries == 5000) { 5010 device_printf(sc->sc_dev, "timeout selecting power source\n"); 5011 return ETIMEDOUT; 5012 } 5013 5014 /* Perform adapter initialization. */ 5015 wpi_nic_config(sc); 5016 5017 /* Initialize RX ring. */ 5018 if ((error = wpi_nic_lock(sc)) != 0) 5019 return error; 5020 /* Set physical address of RX ring. */ 5021 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 5022 /* Set physical address of RX read pointer. */ 5023 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 5024 offsetof(struct wpi_shared, next)); 5025 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 5026 /* Enable RX. */ 5027 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 5028 WPI_FH_RX_CONFIG_DMA_ENA | 5029 WPI_FH_RX_CONFIG_RDRBD_ENA | 5030 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 5031 WPI_FH_RX_CONFIG_MAXFRAG | 5032 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 5033 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 5034 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 5035 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 5036 wpi_nic_unlock(sc); 5037 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 5038 5039 /* Initialize TX rings. */ 5040 if ((error = wpi_nic_lock(sc)) != 0) 5041 return error; 5042 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 5043 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 5044 /* Enable all 6 TX rings. */ 5045 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 5046 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 5047 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 5048 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 5049 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 5050 /* Set physical address of TX rings. */ 5051 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 5052 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 5053 5054 /* Enable all DMA channels. */ 5055 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5056 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 5057 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 5058 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 5059 } 5060 wpi_nic_unlock(sc); 5061 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 5062 5063 /* Clear "radio off" and "commands blocked" bits. */ 5064 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5065 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 5066 5067 /* Clear pending interrupts. */ 5068 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5069 /* Enable interrupts. */ 5070 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 5071 5072 /* _Really_ make sure "radio off" bit is cleared! */ 5073 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5074 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5075 5076 if ((error = wpi_load_firmware(sc)) != 0) { 5077 device_printf(sc->sc_dev, 5078 "%s: could not load firmware, error %d\n", __func__, 5079 error); 5080 return error; 5081 } 5082 /* Wait at most one second for firmware alive notification. */ 5083 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 5084 device_printf(sc->sc_dev, 5085 "%s: timeout waiting for adapter to initialize, error %d\n", 5086 __func__, error); 5087 return error; 5088 } 5089 5090 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5091 5092 /* Do post-firmware initialization. */ 5093 return wpi_post_alive(sc); 5094} 5095 5096static void 5097wpi_hw_stop(struct wpi_softc *sc) 5098{ 5099 int chnl, qid, ntries; 5100 5101 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5102 5103 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 5104 wpi_nic_lock(sc); 5105 5106 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 5107 5108 /* Disable interrupts. */ 5109 WPI_WRITE(sc, WPI_INT_MASK, 0); 5110 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5111 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 5112 5113 /* Make sure we no longer hold the NIC lock. */ 5114 wpi_nic_unlock(sc); 5115 5116 if (wpi_nic_lock(sc) == 0) { 5117 /* Stop TX scheduler. */ 5118 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 5119 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 5120 5121 /* Stop all DMA channels. */ 5122 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5123 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 5124 for (ntries = 0; ntries < 200; ntries++) { 5125 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 5126 WPI_FH_TX_STATUS_IDLE(chnl)) 5127 break; 5128 DELAY(10); 5129 } 5130 } 5131 wpi_nic_unlock(sc); 5132 } 5133 5134 /* Stop RX ring. */ 5135 wpi_reset_rx_ring(sc); 5136 5137 /* Reset all TX rings. */ 5138 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 5139 wpi_reset_tx_ring(sc, &sc->txq[qid]); 5140 5141 if (wpi_nic_lock(sc) == 0) { 5142 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 5143 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 5144 wpi_nic_unlock(sc); 5145 } 5146 DELAY(5); 5147 /* Power OFF adapter. */ 5148 wpi_apm_stop(sc); 5149} 5150 5151static void 5152wpi_radio_on(void *arg0, int pending) 5153{ 5154 struct wpi_softc *sc = arg0; 5155 struct ifnet *ifp = sc->sc_ifp; 5156 struct ieee80211com *ic = ifp->if_l2com; 5157 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5158 5159 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 5160 5161 if (vap != NULL) { 5162 wpi_init(sc); 5163 ieee80211_init(vap); 5164 } 5165 5166 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) { 5167 WPI_LOCK(sc); 5168 callout_stop(&sc->watchdog_rfkill); 5169 WPI_UNLOCK(sc); 5170 } 5171} 5172 5173static void 5174wpi_radio_off(void *arg0, int pending) 5175{ 5176 struct wpi_softc *sc = arg0; 5177 struct ifnet *ifp = sc->sc_ifp; 5178 struct ieee80211com *ic = ifp->if_l2com; 5179 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5180 5181 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 5182 5183 wpi_stop(sc); 5184 if (vap != NULL) 5185 ieee80211_stop(vap); 5186 5187 WPI_LOCK(sc); 5188 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 5189 WPI_UNLOCK(sc); 5190} 5191 5192static void 5193wpi_init(void *arg) 5194{ 5195 struct wpi_softc *sc = arg; 5196 struct ifnet *ifp = sc->sc_ifp; 5197 struct ieee80211com *ic = ifp->if_l2com; 5198 int error; 5199 5200 WPI_LOCK(sc); 5201 5202 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 5203 5204 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 5205 goto end; 5206 5207 /* Check that the radio is not disabled by hardware switch. */ 5208 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 5209 device_printf(sc->sc_dev, 5210 "RF switch: radio disabled (%s)\n", __func__); 5211 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 5212 sc); 5213 goto end; 5214 } 5215 5216 /* Read firmware images from the filesystem. */ 5217 if ((error = wpi_read_firmware(sc)) != 0) { 5218 device_printf(sc->sc_dev, 5219 "%s: could not read firmware, error %d\n", __func__, 5220 error); 5221 goto fail; 5222 } 5223 5224 /* Initialize hardware and upload firmware. */ 5225 error = wpi_hw_init(sc); 5226 wpi_unload_firmware(sc); 5227 if (error != 0) { 5228 device_printf(sc->sc_dev, 5229 "%s: could not initialize hardware, error %d\n", __func__, 5230 error); 5231 goto fail; 5232 } 5233 5234 /* Configure adapter now that it is ready. */ 5235 sc->txq_active = 1; 5236 if ((error = wpi_config(sc)) != 0) { 5237 device_printf(sc->sc_dev, 5238 "%s: could not configure device, error %d\n", __func__, 5239 error); 5240 goto fail; 5241 } 5242 5243 IF_LOCK(&ifp->if_snd); 5244 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 5245 ifp->if_drv_flags |= IFF_DRV_RUNNING; 5246 IF_UNLOCK(&ifp->if_snd); 5247 5248 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 5249 5250 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5251 5252 WPI_UNLOCK(sc); 5253 5254 ieee80211_start_all(ic); 5255 5256 return; 5257 5258fail: wpi_stop_locked(sc); 5259end: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 5260 WPI_UNLOCK(sc); 5261} 5262 5263static void 5264wpi_stop_locked(struct wpi_softc *sc) 5265{ 5266 struct ifnet *ifp = sc->sc_ifp; 5267 5268 WPI_LOCK_ASSERT(sc); 5269 5270 WPI_TXQ_LOCK(sc); 5271 sc->txq_active = 0; 5272 WPI_TXQ_UNLOCK(sc); 5273 5274 sc->sc_scan_timer = 0; 5275 sc->sc_tx_timer = 0; 5276 callout_stop(&sc->watchdog_to); 5277 callout_stop(&sc->calib_to); 5278 5279 IF_LOCK(&ifp->if_snd); 5280 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 5281 IF_UNLOCK(&ifp->if_snd); 5282 5283 /* Power OFF hardware. */ 5284 wpi_hw_stop(sc); 5285} 5286 5287static void 5288wpi_stop(struct wpi_softc *sc) 5289{ 5290 WPI_LOCK(sc); 5291 wpi_stop_locked(sc); 5292 WPI_UNLOCK(sc); 5293} 5294 5295/* 5296 * Callback from net80211 to start a scan. 5297 */ 5298static void 5299wpi_scan_start(struct ieee80211com *ic) 5300{ 5301 struct wpi_softc *sc = ic->ic_ifp->if_softc; 5302 5303 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 5304} 5305 5306/* 5307 * Callback from net80211 to terminate a scan. 5308 */ 5309static void 5310wpi_scan_end(struct ieee80211com *ic) 5311{ 5312 struct ifnet *ifp = ic->ic_ifp; 5313 struct wpi_softc *sc = ifp->if_softc; 5314 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5315 5316 if (vap->iv_state == IEEE80211_S_RUN) 5317 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 5318} 5319 5320/** 5321 * Called by the net80211 framework to indicate to the driver 5322 * that the channel should be changed 5323 */ 5324static void 5325wpi_set_channel(struct ieee80211com *ic) 5326{ 5327 const struct ieee80211_channel *c = ic->ic_curchan; 5328 struct ifnet *ifp = ic->ic_ifp; 5329 struct wpi_softc *sc = ifp->if_softc; 5330 int error; 5331 5332 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5333 5334 WPI_LOCK(sc); 5335 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 5336 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 5337 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 5338 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 5339 5340 /* 5341 * Only need to set the channel in Monitor mode. AP scanning and auth 5342 * are already taken care of by their respective firmware commands. 5343 */ 5344 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 5345 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 5346 if (IEEE80211_IS_CHAN_2GHZ(c)) { 5347 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 5348 WPI_RXON_24GHZ); 5349 } else { 5350 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 5351 WPI_RXON_24GHZ); 5352 } 5353 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) 5354 device_printf(sc->sc_dev, 5355 "%s: error %d setting channel\n", __func__, 5356 error); 5357 } 5358 WPI_UNLOCK(sc); 5359} 5360 5361/** 5362 * Called by net80211 to indicate that we need to scan the current 5363 * channel. The channel is previously be set via the wpi_set_channel 5364 * callback. 5365 */ 5366static void 5367wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 5368{ 5369 struct ieee80211vap *vap = ss->ss_vap; 5370 struct ieee80211com *ic = vap->iv_ic; 5371 struct wpi_softc *sc = ic->ic_ifp->if_softc; 5372 int error; 5373 5374 if (sc->rxon.chan != ieee80211_chan2ieee(ic, ic->ic_curchan)) { 5375 WPI_LOCK(sc); 5376 error = wpi_scan(sc, ic->ic_curchan); 5377 WPI_UNLOCK(sc); 5378 if (error != 0) 5379 ieee80211_cancel_scan(vap); 5380 } else { 5381 /* Send probe request when associated. */ 5382 sc->sc_scan_curchan(ss, maxdwell); 5383 } 5384} 5385 5386/** 5387 * Called by the net80211 framework to indicate 5388 * the minimum dwell time has been met, terminate the scan. 5389 * We don't actually terminate the scan as the firmware will notify 5390 * us when it's finished and we have no way to interrupt it. 5391 */ 5392static void 5393wpi_scan_mindwell(struct ieee80211_scan_state *ss) 5394{ 5395 /* NB: don't try to abort scan; wait for firmware to finish */ 5396} 5397 5398static void 5399wpi_hw_reset(void *arg, int pending) 5400{ 5401 struct wpi_softc *sc = arg; 5402 struct ifnet *ifp = sc->sc_ifp; 5403 struct ieee80211com *ic = ifp->if_l2com; 5404 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5405 5406 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5407 5408 wpi_stop(sc); 5409 if (vap != NULL) 5410 ieee80211_stop(vap); 5411 wpi_init(sc); 5412 if (vap != NULL) 5413 ieee80211_init(vap); 5414} 5415