if_wpi.c revision 280116
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 280116 2015-03-15 21:29:18Z adrian $"); 21 22/* 23 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 24 * 25 * The 3945ABG network adapter doesn't use traditional hardware as 26 * many other adaptors do. Instead at run time the eeprom is set into a known 27 * state and told to load boot firmware. The boot firmware loads an init and a 28 * main binary firmware image into SRAM on the card via DMA. 29 * Once the firmware is loaded, the driver/hw then 30 * communicate by way of circular dma rings via the SRAM to the firmware. 31 * 32 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 33 * The 4 tx data rings allow for prioritization QoS. 34 * 35 * The rx data ring consists of 32 dma buffers. Two registers are used to 36 * indicate where in the ring the driver and the firmware are up to. The 37 * driver sets the initial read index (reg1) and the initial write index (reg2), 38 * the firmware updates the read index (reg1) on rx of a packet and fires an 39 * interrupt. The driver then processes the buffers starting at reg1 indicating 40 * to the firmware which buffers have been accessed by updating reg2. At the 41 * same time allocating new memory for the processed buffer. 42 * 43 * A similar thing happens with the tx rings. The difference is the firmware 44 * stop processing buffers once the queue is full and until confirmation 45 * of a successful transmition (tx_done) has occurred. 46 * 47 * The command ring operates in the same manner as the tx queues. 48 * 49 * All communication direct to the card (ie eeprom) is classed as Stage1 50 * communication 51 * 52 * All communication via the firmware to the card is classed as State2. 53 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 54 * firmware. The bootstrap firmware and runtime firmware are loaded 55 * from host memory via dma to the card then told to execute. From this point 56 * on the majority of communications between the driver and the card goes 57 * via the firmware. 58 */ 59 60#include "opt_wlan.h" 61#include "opt_wpi.h" 62 63#include <sys/param.h> 64#include <sys/sysctl.h> 65#include <sys/sockio.h> 66#include <sys/mbuf.h> 67#include <sys/kernel.h> 68#include <sys/socket.h> 69#include <sys/systm.h> 70#include <sys/malloc.h> 71#include <sys/queue.h> 72#include <sys/taskqueue.h> 73#include <sys/module.h> 74#include <sys/bus.h> 75#include <sys/endian.h> 76#include <sys/linker.h> 77#include <sys/firmware.h> 78 79#include <machine/bus.h> 80#include <machine/resource.h> 81#include <sys/rman.h> 82 83#include <dev/pci/pcireg.h> 84#include <dev/pci/pcivar.h> 85 86#include <net/bpf.h> 87#include <net/if.h> 88#include <net/if_var.h> 89#include <net/if_arp.h> 90#include <net/ethernet.h> 91#include <net/if_dl.h> 92#include <net/if_media.h> 93#include <net/if_types.h> 94 95#include <netinet/in.h> 96#include <netinet/in_systm.h> 97#include <netinet/in_var.h> 98#include <netinet/if_ether.h> 99#include <netinet/ip.h> 100 101#include <net80211/ieee80211_var.h> 102#include <net80211/ieee80211_radiotap.h> 103#include <net80211/ieee80211_regdomain.h> 104#include <net80211/ieee80211_ratectl.h> 105 106#include <dev/wpi/if_wpireg.h> 107#include <dev/wpi/if_wpivar.h> 108#include <dev/wpi/if_wpi_debug.h> 109 110struct wpi_ident { 111 uint16_t vendor; 112 uint16_t device; 113 uint16_t subdevice; 114 const char *name; 115}; 116 117static const struct wpi_ident wpi_ident_table[] = { 118 /* The below entries support ABG regardless of the subid */ 119 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 120 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 121 /* The below entries only support BG */ 122 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 123 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 124 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 125 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 126 { 0, 0, 0, NULL } 127}; 128 129static int wpi_probe(device_t); 130static int wpi_attach(device_t); 131static void wpi_radiotap_attach(struct wpi_softc *); 132static void wpi_sysctlattach(struct wpi_softc *); 133static void wpi_init_beacon(struct wpi_vap *); 134static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 135 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 136 const uint8_t [IEEE80211_ADDR_LEN], 137 const uint8_t [IEEE80211_ADDR_LEN]); 138static void wpi_vap_delete(struct ieee80211vap *); 139static int wpi_detach(device_t); 140static int wpi_shutdown(device_t); 141static int wpi_suspend(device_t); 142static int wpi_resume(device_t); 143static int wpi_nic_lock(struct wpi_softc *); 144static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 145static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 146static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 147 void **, bus_size_t, bus_size_t); 148static void wpi_dma_contig_free(struct wpi_dma_info *); 149static int wpi_alloc_shared(struct wpi_softc *); 150static void wpi_free_shared(struct wpi_softc *); 151static int wpi_alloc_fwmem(struct wpi_softc *); 152static void wpi_free_fwmem(struct wpi_softc *); 153static int wpi_alloc_rx_ring(struct wpi_softc *); 154static void wpi_update_rx_ring(struct wpi_softc *); 155static void wpi_reset_rx_ring(struct wpi_softc *); 156static void wpi_free_rx_ring(struct wpi_softc *); 157static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 158 int); 159static void wpi_update_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 160static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 161static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 162static int wpi_read_eeprom(struct wpi_softc *, 163 uint8_t macaddr[IEEE80211_ADDR_LEN]); 164static uint32_t wpi_eeprom_channel_flags(struct wpi_eeprom_chan *); 165static void wpi_read_eeprom_band(struct wpi_softc *, int); 166static int wpi_read_eeprom_channels(struct wpi_softc *, int); 167static struct wpi_eeprom_chan *wpi_find_eeprom_channel(struct wpi_softc *, 168 struct ieee80211_channel *); 169static int wpi_setregdomain(struct ieee80211com *, 170 struct ieee80211_regdomain *, int, 171 struct ieee80211_channel[]); 172static int wpi_read_eeprom_group(struct wpi_softc *, int); 173static int wpi_add_node_entry_adhoc(struct wpi_softc *); 174static void wpi_node_free(struct ieee80211_node *); 175static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 176 const uint8_t mac[IEEE80211_ADDR_LEN]); 177static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 178static void wpi_calib_timeout(void *); 179static void wpi_rx_done(struct wpi_softc *, struct wpi_rx_desc *, 180 struct wpi_rx_data *); 181static void wpi_rx_statistics(struct wpi_softc *, struct wpi_rx_desc *, 182 struct wpi_rx_data *); 183static void wpi_tx_done(struct wpi_softc *, struct wpi_rx_desc *); 184static void wpi_cmd_done(struct wpi_softc *, struct wpi_rx_desc *); 185static void wpi_notif_intr(struct wpi_softc *); 186static void wpi_wakeup_intr(struct wpi_softc *); 187#ifdef WPI_DEBUG 188static void wpi_debug_registers(struct wpi_softc *); 189#endif 190static void wpi_fatal_intr(struct wpi_softc *); 191static void wpi_intr(void *); 192static int wpi_cmd2(struct wpi_softc *, struct wpi_buf *); 193static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 194 struct ieee80211_node *); 195static int wpi_tx_data_raw(struct wpi_softc *, struct mbuf *, 196 struct ieee80211_node *, 197 const struct ieee80211_bpf_params *); 198static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 199 const struct ieee80211_bpf_params *); 200static void wpi_start(struct ifnet *); 201static void wpi_start_task(void *, int); 202static void wpi_watchdog_rfkill(void *); 203static void wpi_scan_timeout(void *); 204static void wpi_tx_timeout(void *); 205static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 206static int wpi_cmd(struct wpi_softc *, int, const void *, size_t, int); 207static int wpi_mrr_setup(struct wpi_softc *); 208static int wpi_add_node(struct wpi_softc *, struct ieee80211_node *); 209static int wpi_add_broadcast_node(struct wpi_softc *, int); 210static int wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *); 211static void wpi_del_node(struct wpi_softc *, struct ieee80211_node *); 212static int wpi_updateedca(struct ieee80211com *); 213static void wpi_set_promisc(struct wpi_softc *); 214static void wpi_update_promisc(struct ifnet *); 215static void wpi_update_mcast(struct ifnet *); 216static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 217static int wpi_set_timing(struct wpi_softc *, struct ieee80211_node *); 218static void wpi_power_calibration(struct wpi_softc *); 219static int wpi_set_txpower(struct wpi_softc *, int); 220static int wpi_get_power_index(struct wpi_softc *, 221 struct wpi_power_group *, 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_TX_LOCK_INIT(sc); 400 WPI_RXON_LOCK_INIT(sc); 401 WPI_NT_LOCK_INIT(sc); 402 WPI_TXQ_LOCK_INIT(sc); 403 WPI_TXQ_STATE_LOCK_INIT(sc); 404 405 /* Allocate DMA memory for firmware transfers. */ 406 if ((error = wpi_alloc_fwmem(sc)) != 0) { 407 device_printf(dev, 408 "could not allocate memory for firmware, error %d\n", 409 error); 410 goto fail; 411 } 412 413 /* Allocate shared page. */ 414 if ((error = wpi_alloc_shared(sc)) != 0) { 415 device_printf(dev, "could not allocate shared page\n"); 416 goto fail; 417 } 418 419 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 420 for (i = 0; i < WPI_NTXQUEUES; i++) { 421 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 422 device_printf(dev, 423 "could not allocate TX ring %d, error %d\n", i, 424 error); 425 goto fail; 426 } 427 } 428 429 /* Allocate RX ring. */ 430 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 431 device_printf(dev, "could not allocate RX ring, error %d\n", 432 error); 433 goto fail; 434 } 435 436 /* Clear pending interrupts. */ 437 WPI_WRITE(sc, WPI_INT, 0xffffffff); 438 439 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 440 if (ifp == NULL) { 441 device_printf(dev, "can not allocate ifnet structure\n"); 442 goto fail; 443 } 444 445 ic = ifp->if_l2com; 446 ic->ic_ifp = ifp; 447 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 448 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 449 450 /* Set device capabilities. */ 451 ic->ic_caps = 452 IEEE80211_C_STA /* station mode supported */ 453 | IEEE80211_C_IBSS /* IBSS mode supported */ 454 | IEEE80211_C_HOSTAP /* Host access point mode */ 455 | IEEE80211_C_MONITOR /* monitor mode supported */ 456 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 457 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 458 | IEEE80211_C_TXPMGT /* tx power management */ 459 | IEEE80211_C_SHSLOT /* short slot time supported */ 460 | IEEE80211_C_WPA /* 802.11i */ 461 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 462 | IEEE80211_C_WME /* 802.11e */ 463 | IEEE80211_C_PMGT /* Station-side power mgmt */ 464 ; 465 466 ic->ic_cryptocaps = 467 IEEE80211_CRYPTO_AES_CCM; 468 469 /* 470 * Read in the eeprom and also setup the channels for 471 * net80211. We don't set the rates as net80211 does this for us 472 */ 473 if ((error = wpi_read_eeprom(sc, macaddr)) != 0) { 474 device_printf(dev, "could not read EEPROM, error %d\n", 475 error); 476 goto fail; 477 } 478 479#ifdef WPI_DEBUG 480 if (bootverbose) { 481 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", 482 sc->domain); 483 device_printf(sc->sc_dev, "Hardware Type: %c\n", 484 sc->type > 1 ? 'B': '?'); 485 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 486 ((sc->rev & 0xf0) == 0xd0) ? 'D': '?'); 487 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 488 supportsa ? "does" : "does not"); 489 490 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must 491 check what sc->rev really represents - benjsc 20070615 */ 492 } 493#endif 494 495 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 496 ifp->if_softc = sc; 497 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 498 ifp->if_init = wpi_init; 499 ifp->if_ioctl = wpi_ioctl; 500 ifp->if_start = wpi_start; 501 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 502 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 503 IFQ_SET_READY(&ifp->if_snd); 504 505 ieee80211_ifattach(ic, macaddr); 506 ic->ic_vap_create = wpi_vap_create; 507 ic->ic_vap_delete = wpi_vap_delete; 508 ic->ic_raw_xmit = wpi_raw_xmit; 509 ic->ic_node_alloc = wpi_node_alloc; 510 sc->sc_node_free = ic->ic_node_free; 511 ic->ic_node_free = wpi_node_free; 512 ic->ic_wme.wme_update = wpi_updateedca; 513 ic->ic_update_promisc = wpi_update_promisc; 514 ic->ic_update_mcast = wpi_update_mcast; 515 ic->ic_newassoc = wpi_newassoc; 516 ic->ic_scan_start = wpi_scan_start; 517 ic->ic_scan_end = wpi_scan_end; 518 ic->ic_set_channel = wpi_set_channel; 519 sc->sc_scan_curchan = ic->ic_scan_curchan; 520 ic->ic_scan_curchan = wpi_scan_curchan; 521 ic->ic_scan_mindwell = wpi_scan_mindwell; 522 ic->ic_setregdomain = wpi_setregdomain; 523 524 wpi_radiotap_attach(sc); 525 526 callout_init_mtx(&sc->calib_to, &sc->rxon_mtx, 0); 527 callout_init_mtx(&sc->scan_timeout, &sc->rxon_mtx, 0); 528 callout_init_mtx(&sc->tx_timeout, &sc->txq_state_mtx, 0); 529 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 530 TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc); 531 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 532 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 533 TASK_INIT(&sc->sc_start_task, 0, wpi_start_task, sc); 534 535 wpi_sysctlattach(sc); 536 537 /* 538 * Hook our interrupt after all initialization is complete. 539 */ 540 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 541 NULL, wpi_intr, sc, &sc->sc_ih); 542 if (error != 0) { 543 device_printf(dev, "can't establish interrupt, error %d\n", 544 error); 545 goto fail; 546 } 547 548 if (bootverbose) 549 ieee80211_announce(ic); 550 551#ifdef WPI_DEBUG 552 if (sc->sc_debug & WPI_DEBUG_HW) 553 ieee80211_announce_channels(ic); 554#endif 555 556 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 557 return 0; 558 559fail: wpi_detach(dev); 560 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 561 return error; 562} 563 564/* 565 * Attach the interface to 802.11 radiotap. 566 */ 567static void 568wpi_radiotap_attach(struct wpi_softc *sc) 569{ 570 struct ifnet *ifp = sc->sc_ifp; 571 struct ieee80211com *ic = ifp->if_l2com; 572 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 573 ieee80211_radiotap_attach(ic, 574 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 575 WPI_TX_RADIOTAP_PRESENT, 576 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 577 WPI_RX_RADIOTAP_PRESENT); 578 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 579} 580 581static void 582wpi_sysctlattach(struct wpi_softc *sc) 583{ 584#ifdef WPI_DEBUG 585 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 586 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 587 588 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 589 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 590 "control debugging printfs"); 591#endif 592} 593 594static void 595wpi_init_beacon(struct wpi_vap *wvp) 596{ 597 struct wpi_buf *bcn = &wvp->wv_bcbuf; 598 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 599 600 cmd->id = WPI_ID_BROADCAST; 601 cmd->ofdm_mask = 0xff; 602 cmd->cck_mask = 0x0f; 603 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 604 cmd->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 605 606 bcn->code = WPI_CMD_SET_BEACON; 607 bcn->ac = WPI_CMD_QUEUE_NUM; 608 bcn->size = sizeof(struct wpi_cmd_beacon); 609} 610 611static struct ieee80211vap * 612wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 613 enum ieee80211_opmode opmode, int flags, 614 const uint8_t bssid[IEEE80211_ADDR_LEN], 615 const uint8_t mac[IEEE80211_ADDR_LEN]) 616{ 617 struct wpi_vap *wvp; 618 struct ieee80211vap *vap; 619 620 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 621 return NULL; 622 623 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 624 M_80211_VAP, M_NOWAIT | M_ZERO); 625 if (wvp == NULL) 626 return NULL; 627 vap = &wvp->wv_vap; 628 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 629 630 if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) { 631 WPI_VAP_LOCK_INIT(wvp); 632 wpi_init_beacon(wvp); 633 } 634 635 /* Override with driver methods. */ 636 vap->iv_key_set = wpi_key_set; 637 vap->iv_key_delete = wpi_key_delete; 638 wvp->wv_newstate = vap->iv_newstate; 639 vap->iv_newstate = wpi_newstate; 640 vap->iv_update_beacon = wpi_update_beacon; 641 vap->iv_max_aid = WPI_ID_IBSS_MAX - WPI_ID_IBSS_MIN + 1; 642 643 ieee80211_ratectl_init(vap); 644 /* Complete setup. */ 645 ieee80211_vap_attach(vap, ieee80211_media_change, 646 ieee80211_media_status); 647 ic->ic_opmode = opmode; 648 return vap; 649} 650 651static void 652wpi_vap_delete(struct ieee80211vap *vap) 653{ 654 struct wpi_vap *wvp = WPI_VAP(vap); 655 struct wpi_buf *bcn = &wvp->wv_bcbuf; 656 enum ieee80211_opmode opmode = vap->iv_opmode; 657 658 ieee80211_ratectl_deinit(vap); 659 ieee80211_vap_detach(vap); 660 661 if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) { 662 if (bcn->m != NULL) 663 m_freem(bcn->m); 664 665 WPI_VAP_LOCK_DESTROY(wvp); 666 } 667 668 free(wvp, M_80211_VAP); 669} 670 671static int 672wpi_detach(device_t dev) 673{ 674 struct wpi_softc *sc = device_get_softc(dev); 675 struct ifnet *ifp = sc->sc_ifp; 676 struct ieee80211com *ic; 677 int qid; 678 679 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 680 681 if (ifp != NULL) { 682 ic = ifp->if_l2com; 683 684 ieee80211_draintask(ic, &sc->sc_reinittask); 685 ieee80211_draintask(ic, &sc->sc_radiooff_task); 686 ieee80211_draintask(ic, &sc->sc_radioon_task); 687 ieee80211_draintask(ic, &sc->sc_start_task); 688 689 wpi_stop(sc); 690 691 callout_drain(&sc->watchdog_rfkill); 692 callout_drain(&sc->tx_timeout); 693 callout_drain(&sc->scan_timeout); 694 callout_drain(&sc->calib_to); 695 ieee80211_ifdetach(ic); 696 } 697 698 /* Uninstall interrupt handler. */ 699 if (sc->irq != NULL) { 700 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 701 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 702 sc->irq); 703 pci_release_msi(dev); 704 } 705 706 if (sc->txq[0].data_dmat) { 707 /* Free DMA resources. */ 708 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 709 wpi_free_tx_ring(sc, &sc->txq[qid]); 710 711 wpi_free_rx_ring(sc); 712 wpi_free_shared(sc); 713 } 714 715 if (sc->fw_dma.tag) 716 wpi_free_fwmem(sc); 717 718 if (sc->mem != NULL) 719 bus_release_resource(dev, SYS_RES_MEMORY, 720 rman_get_rid(sc->mem), sc->mem); 721 722 if (ifp != NULL) 723 if_free(ifp); 724 725 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 726 WPI_TXQ_STATE_LOCK_DESTROY(sc); 727 WPI_TXQ_LOCK_DESTROY(sc); 728 WPI_NT_LOCK_DESTROY(sc); 729 WPI_RXON_LOCK_DESTROY(sc); 730 WPI_TX_LOCK_DESTROY(sc); 731 WPI_LOCK_DESTROY(sc); 732 return 0; 733} 734 735static int 736wpi_shutdown(device_t dev) 737{ 738 struct wpi_softc *sc = device_get_softc(dev); 739 740 wpi_stop(sc); 741 return 0; 742} 743 744static int 745wpi_suspend(device_t dev) 746{ 747 struct wpi_softc *sc = device_get_softc(dev); 748 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 749 750 ieee80211_suspend_all(ic); 751 return 0; 752} 753 754static int 755wpi_resume(device_t dev) 756{ 757 struct wpi_softc *sc = device_get_softc(dev); 758 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 759 760 /* Clear device-specific "PCI retry timeout" register (41h). */ 761 pci_write_config(dev, 0x41, 0, 1); 762 763 ieee80211_resume_all(ic); 764 return 0; 765} 766 767/* 768 * Grab exclusive access to NIC memory. 769 */ 770static int 771wpi_nic_lock(struct wpi_softc *sc) 772{ 773 int ntries; 774 775 /* Request exclusive access to NIC. */ 776 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 777 778 /* Spin until we actually get the lock. */ 779 for (ntries = 0; ntries < 1000; ntries++) { 780 if ((WPI_READ(sc, WPI_GP_CNTRL) & 781 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 782 WPI_GP_CNTRL_MAC_ACCESS_ENA) 783 return 0; 784 DELAY(10); 785 } 786 787 device_printf(sc->sc_dev, "could not lock memory\n"); 788 789 return ETIMEDOUT; 790} 791 792/* 793 * Release lock on NIC memory. 794 */ 795static __inline void 796wpi_nic_unlock(struct wpi_softc *sc) 797{ 798 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 799} 800 801static __inline uint32_t 802wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 803{ 804 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 805 WPI_BARRIER_READ_WRITE(sc); 806 return WPI_READ(sc, WPI_PRPH_RDATA); 807} 808 809static __inline void 810wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 811{ 812 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 813 WPI_BARRIER_WRITE(sc); 814 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 815} 816 817static __inline void 818wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 819{ 820 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 821} 822 823static __inline void 824wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 825{ 826 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 827} 828 829static __inline void 830wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 831 const uint32_t *data, int count) 832{ 833 for (; count > 0; count--, data++, addr += 4) 834 wpi_prph_write(sc, addr, *data); 835} 836 837static __inline uint32_t 838wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 839{ 840 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 841 WPI_BARRIER_READ_WRITE(sc); 842 return WPI_READ(sc, WPI_MEM_RDATA); 843} 844 845static __inline void 846wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 847 int count) 848{ 849 for (; count > 0; count--, addr += 4) 850 *data++ = wpi_mem_read(sc, addr); 851} 852 853static int 854wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 855{ 856 uint8_t *out = data; 857 uint32_t val; 858 int error, ntries; 859 860 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 861 862 if ((error = wpi_nic_lock(sc)) != 0) 863 return error; 864 865 for (; count > 0; count -= 2, addr++) { 866 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 867 for (ntries = 0; ntries < 10; ntries++) { 868 val = WPI_READ(sc, WPI_EEPROM); 869 if (val & WPI_EEPROM_READ_VALID) 870 break; 871 DELAY(5); 872 } 873 if (ntries == 10) { 874 device_printf(sc->sc_dev, 875 "timeout reading ROM at 0x%x\n", addr); 876 return ETIMEDOUT; 877 } 878 *out++= val >> 16; 879 if (count > 1) 880 *out ++= val >> 24; 881 } 882 883 wpi_nic_unlock(sc); 884 885 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 886 887 return 0; 888} 889 890static void 891wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 892{ 893 if (error != 0) 894 return; 895 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 896 *(bus_addr_t *)arg = segs[0].ds_addr; 897} 898 899/* 900 * Allocates a contiguous block of dma memory of the requested size and 901 * alignment. 902 */ 903static int 904wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 905 void **kvap, bus_size_t size, bus_size_t alignment) 906{ 907 int error; 908 909 dma->tag = NULL; 910 dma->size = size; 911 912 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 913 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 914 1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag); 915 if (error != 0) 916 goto fail; 917 918 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 919 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 920 if (error != 0) 921 goto fail; 922 923 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 924 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 925 if (error != 0) 926 goto fail; 927 928 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 929 930 if (kvap != NULL) 931 *kvap = dma->vaddr; 932 933 return 0; 934 935fail: wpi_dma_contig_free(dma); 936 return error; 937} 938 939static void 940wpi_dma_contig_free(struct wpi_dma_info *dma) 941{ 942 if (dma->vaddr != NULL) { 943 bus_dmamap_sync(dma->tag, dma->map, 944 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 945 bus_dmamap_unload(dma->tag, dma->map); 946 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 947 dma->vaddr = NULL; 948 } 949 if (dma->tag != NULL) { 950 bus_dma_tag_destroy(dma->tag); 951 dma->tag = NULL; 952 } 953} 954 955/* 956 * Allocate a shared page between host and NIC. 957 */ 958static int 959wpi_alloc_shared(struct wpi_softc *sc) 960{ 961 /* Shared buffer must be aligned on a 4KB boundary. */ 962 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 963 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 964} 965 966static void 967wpi_free_shared(struct wpi_softc *sc) 968{ 969 wpi_dma_contig_free(&sc->shared_dma); 970} 971 972/* 973 * Allocate DMA-safe memory for firmware transfer. 974 */ 975static int 976wpi_alloc_fwmem(struct wpi_softc *sc) 977{ 978 /* Must be aligned on a 16-byte boundary. */ 979 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 980 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 981} 982 983static void 984wpi_free_fwmem(struct wpi_softc *sc) 985{ 986 wpi_dma_contig_free(&sc->fw_dma); 987} 988 989static int 990wpi_alloc_rx_ring(struct wpi_softc *sc) 991{ 992 struct wpi_rx_ring *ring = &sc->rxq; 993 bus_size_t size; 994 int i, error; 995 996 ring->cur = 0; 997 ring->update = 0; 998 999 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1000 1001 /* Allocate RX descriptors (16KB aligned.) */ 1002 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 1003 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1004 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 1005 if (error != 0) { 1006 device_printf(sc->sc_dev, 1007 "%s: could not allocate RX ring DMA memory, error %d\n", 1008 __func__, error); 1009 goto fail; 1010 } 1011 1012 /* Create RX buffer DMA tag. */ 1013 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1014 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1015 MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, 1016 &ring->data_dmat); 1017 if (error != 0) { 1018 device_printf(sc->sc_dev, 1019 "%s: could not create RX buf DMA tag, error %d\n", 1020 __func__, error); 1021 goto fail; 1022 } 1023 1024 /* 1025 * Allocate and map RX buffers. 1026 */ 1027 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1028 struct wpi_rx_data *data = &ring->data[i]; 1029 bus_addr_t paddr; 1030 1031 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1032 if (error != 0) { 1033 device_printf(sc->sc_dev, 1034 "%s: could not create RX buf DMA map, error %d\n", 1035 __func__, error); 1036 goto fail; 1037 } 1038 1039 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1040 if (data->m == NULL) { 1041 device_printf(sc->sc_dev, 1042 "%s: could not allocate RX mbuf\n", __func__); 1043 error = ENOBUFS; 1044 goto fail; 1045 } 1046 1047 error = bus_dmamap_load(ring->data_dmat, data->map, 1048 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1049 &paddr, BUS_DMA_NOWAIT); 1050 if (error != 0 && error != EFBIG) { 1051 device_printf(sc->sc_dev, 1052 "%s: can't map mbuf (error %d)\n", __func__, 1053 error); 1054 goto fail; 1055 } 1056 1057 /* Set physical address of RX buffer. */ 1058 ring->desc[i] = htole32(paddr); 1059 } 1060 1061 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1062 BUS_DMASYNC_PREWRITE); 1063 1064 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1065 1066 return 0; 1067 1068fail: wpi_free_rx_ring(sc); 1069 1070 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1071 1072 return error; 1073} 1074 1075static void 1076wpi_update_rx_ring(struct wpi_softc *sc) 1077{ 1078 struct wpi_rx_ring *ring = &sc->rxq; 1079 1080 if (ring->update != 0) { 1081 /* Wait for INT_WAKEUP event. */ 1082 return; 1083 } 1084 1085 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1086 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1087 __func__); 1088 1089 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1090 ring->update = 1; 1091 } else 1092 WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7); 1093} 1094 1095static void 1096wpi_reset_rx_ring(struct wpi_softc *sc) 1097{ 1098 struct wpi_rx_ring *ring = &sc->rxq; 1099 int ntries; 1100 1101 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1102 1103 if (wpi_nic_lock(sc) == 0) { 1104 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1105 for (ntries = 0; ntries < 1000; ntries++) { 1106 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1107 WPI_FH_RX_STATUS_IDLE) 1108 break; 1109 DELAY(10); 1110 } 1111 wpi_nic_unlock(sc); 1112 } 1113 1114 ring->cur = 0; 1115 ring->update = 0; 1116} 1117 1118static void 1119wpi_free_rx_ring(struct wpi_softc *sc) 1120{ 1121 struct wpi_rx_ring *ring = &sc->rxq; 1122 int i; 1123 1124 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1125 1126 wpi_dma_contig_free(&ring->desc_dma); 1127 1128 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1129 struct wpi_rx_data *data = &ring->data[i]; 1130 1131 if (data->m != NULL) { 1132 bus_dmamap_sync(ring->data_dmat, data->map, 1133 BUS_DMASYNC_POSTREAD); 1134 bus_dmamap_unload(ring->data_dmat, data->map); 1135 m_freem(data->m); 1136 data->m = NULL; 1137 } 1138 if (data->map != NULL) 1139 bus_dmamap_destroy(ring->data_dmat, data->map); 1140 } 1141 if (ring->data_dmat != NULL) { 1142 bus_dma_tag_destroy(ring->data_dmat); 1143 ring->data_dmat = NULL; 1144 } 1145} 1146 1147static int 1148wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid) 1149{ 1150 bus_addr_t paddr; 1151 bus_size_t size; 1152 int i, error; 1153 1154 ring->qid = qid; 1155 ring->queued = 0; 1156 ring->cur = 0; 1157 ring->update = 0; 1158 1159 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1160 1161 /* Allocate TX descriptors (16KB aligned.) */ 1162 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1163 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1164 size, WPI_RING_DMA_ALIGN); 1165 if (error != 0) { 1166 device_printf(sc->sc_dev, 1167 "%s: could not allocate TX ring DMA memory, error %d\n", 1168 __func__, error); 1169 goto fail; 1170 } 1171 1172 /* Update shared area with ring physical address. */ 1173 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1174 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1175 BUS_DMASYNC_PREWRITE); 1176 1177 /* 1178 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need 1179 * to allocate commands space for other rings. 1180 * XXX Do we really need to allocate descriptors for other rings? 1181 */ 1182 if (qid > WPI_CMD_QUEUE_NUM) { 1183 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1184 return 0; 1185 } 1186 1187 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1188 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1189 size, 4); 1190 if (error != 0) { 1191 device_printf(sc->sc_dev, 1192 "%s: could not allocate TX cmd DMA memory, error %d\n", 1193 __func__, error); 1194 goto fail; 1195 } 1196 1197 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1198 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1199 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1200 &ring->data_dmat); 1201 if (error != 0) { 1202 device_printf(sc->sc_dev, 1203 "%s: could not create TX buf DMA tag, error %d\n", 1204 __func__, error); 1205 goto fail; 1206 } 1207 1208 paddr = ring->cmd_dma.paddr; 1209 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1210 struct wpi_tx_data *data = &ring->data[i]; 1211 1212 data->cmd_paddr = paddr; 1213 paddr += sizeof (struct wpi_tx_cmd); 1214 1215 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1216 if (error != 0) { 1217 device_printf(sc->sc_dev, 1218 "%s: could not create TX buf DMA map, error %d\n", 1219 __func__, error); 1220 goto fail; 1221 } 1222 } 1223 1224 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1225 1226 return 0; 1227 1228fail: wpi_free_tx_ring(sc, ring); 1229 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1230 return error; 1231} 1232 1233static void 1234wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1235{ 1236 if (ring->update != 0) { 1237 /* Wait for INT_WAKEUP event. */ 1238 return; 1239 } 1240 1241 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1242 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1243 __func__, ring->qid); 1244 1245 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1246 ring->update = 1; 1247 } else 1248 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1249} 1250 1251static void 1252wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1253{ 1254 int i; 1255 1256 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1257 1258 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1259 struct wpi_tx_data *data = &ring->data[i]; 1260 1261 if (data->m != NULL) { 1262 bus_dmamap_sync(ring->data_dmat, data->map, 1263 BUS_DMASYNC_POSTWRITE); 1264 bus_dmamap_unload(ring->data_dmat, data->map); 1265 m_freem(data->m); 1266 data->m = NULL; 1267 } 1268 } 1269 /* Clear TX descriptors. */ 1270 memset(ring->desc, 0, ring->desc_dma.size); 1271 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1272 BUS_DMASYNC_PREWRITE); 1273 sc->qfullmsk &= ~(1 << ring->qid); 1274 ring->queued = 0; 1275 ring->cur = 0; 1276 ring->update = 0; 1277} 1278 1279static void 1280wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1281{ 1282 int i; 1283 1284 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1285 1286 wpi_dma_contig_free(&ring->desc_dma); 1287 wpi_dma_contig_free(&ring->cmd_dma); 1288 1289 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1290 struct wpi_tx_data *data = &ring->data[i]; 1291 1292 if (data->m != NULL) { 1293 bus_dmamap_sync(ring->data_dmat, data->map, 1294 BUS_DMASYNC_POSTWRITE); 1295 bus_dmamap_unload(ring->data_dmat, data->map); 1296 m_freem(data->m); 1297 } 1298 if (data->map != NULL) 1299 bus_dmamap_destroy(ring->data_dmat, data->map); 1300 } 1301 if (ring->data_dmat != NULL) { 1302 bus_dma_tag_destroy(ring->data_dmat); 1303 ring->data_dmat = NULL; 1304 } 1305} 1306 1307/* 1308 * Extract various information from EEPROM. 1309 */ 1310static int 1311wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 1312{ 1313#define WPI_CHK(res) do { \ 1314 if ((error = res) != 0) \ 1315 goto fail; \ 1316} while (0) 1317 int error, i; 1318 1319 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1320 1321 /* Adapter has to be powered on for EEPROM access to work. */ 1322 if ((error = wpi_apm_init(sc)) != 0) { 1323 device_printf(sc->sc_dev, 1324 "%s: could not power ON adapter, error %d\n", __func__, 1325 error); 1326 return error; 1327 } 1328 1329 if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) { 1330 device_printf(sc->sc_dev, "bad EEPROM signature\n"); 1331 error = EIO; 1332 goto fail; 1333 } 1334 /* Clear HW ownership of EEPROM. */ 1335 WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER); 1336 1337 /* Read the hardware capabilities, revision and SKU type. */ 1338 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap, 1339 sizeof(sc->cap))); 1340 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 1341 sizeof(sc->rev))); 1342 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1343 sizeof(sc->type))); 1344 1345 sc->rev = le16toh(sc->rev); 1346 DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, 1347 sc->rev, sc->type); 1348 1349 /* Read the regulatory domain (4 ASCII characters.) */ 1350 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 1351 sizeof(sc->domain))); 1352 1353 /* Read MAC address. */ 1354 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 1355 IEEE80211_ADDR_LEN)); 1356 1357 /* Read the list of authorized channels. */ 1358 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 1359 WPI_CHK(wpi_read_eeprom_channels(sc, i)); 1360 1361 /* Read the list of TX power groups. */ 1362 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 1363 WPI_CHK(wpi_read_eeprom_group(sc, i)); 1364 1365fail: wpi_apm_stop(sc); /* Power OFF adapter. */ 1366 1367 DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 1368 __func__); 1369 1370 return error; 1371#undef WPI_CHK 1372} 1373 1374/* 1375 * Translate EEPROM flags to net80211. 1376 */ 1377static uint32_t 1378wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel) 1379{ 1380 uint32_t nflags; 1381 1382 nflags = 0; 1383 if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0) 1384 nflags |= IEEE80211_CHAN_PASSIVE; 1385 if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0) 1386 nflags |= IEEE80211_CHAN_NOADHOC; 1387 if (channel->flags & WPI_EEPROM_CHAN_RADAR) { 1388 nflags |= IEEE80211_CHAN_DFS; 1389 /* XXX apparently IBSS may still be marked */ 1390 nflags |= IEEE80211_CHAN_NOADHOC; 1391 } 1392 1393 /* XXX HOSTAP uses WPI_MODE_IBSS */ 1394 if (nflags & IEEE80211_CHAN_NOADHOC) 1395 nflags |= IEEE80211_CHAN_NOHOSTAP; 1396 1397 return nflags; 1398} 1399 1400static void 1401wpi_read_eeprom_band(struct wpi_softc *sc, int n) 1402{ 1403 struct ifnet *ifp = sc->sc_ifp; 1404 struct ieee80211com *ic = ifp->if_l2com; 1405 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1406 const struct wpi_chan_band *band = &wpi_bands[n]; 1407 struct ieee80211_channel *c; 1408 uint8_t chan; 1409 int i, nflags; 1410 1411 for (i = 0; i < band->nchan; i++) { 1412 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1413 DPRINTF(sc, WPI_DEBUG_EEPROM, 1414 "Channel Not Valid: %d, band %d\n", 1415 band->chan[i],n); 1416 continue; 1417 } 1418 1419 chan = band->chan[i]; 1420 nflags = wpi_eeprom_channel_flags(&channels[i]); 1421 1422 c = &ic->ic_channels[ic->ic_nchans++]; 1423 c->ic_ieee = chan; 1424 c->ic_maxregpower = channels[i].maxpwr; 1425 c->ic_maxpower = 2*c->ic_maxregpower; 1426 1427 if (n == 0) { /* 2GHz band */ 1428 c->ic_freq = ieee80211_ieee2mhz(chan, 1429 IEEE80211_CHAN_G); 1430 1431 /* G =>'s B is supported */ 1432 c->ic_flags = IEEE80211_CHAN_B | nflags; 1433 c = &ic->ic_channels[ic->ic_nchans++]; 1434 c[0] = c[-1]; 1435 c->ic_flags = IEEE80211_CHAN_G | nflags; 1436 } else { /* 5GHz band */ 1437 c->ic_freq = ieee80211_ieee2mhz(chan, 1438 IEEE80211_CHAN_A); 1439 1440 c->ic_flags = IEEE80211_CHAN_A | nflags; 1441 } 1442 1443 /* Save maximum allowed TX power for this channel. */ 1444 sc->maxpwr[chan] = channels[i].maxpwr; 1445 1446 DPRINTF(sc, WPI_DEBUG_EEPROM, 1447 "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d," 1448 " offset %d\n", chan, c->ic_freq, 1449 channels[i].flags, sc->maxpwr[chan], 1450 IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans); 1451 } 1452} 1453 1454/** 1455 * Read the eeprom to find out what channels are valid for the given 1456 * band and update net80211 with what we find. 1457 */ 1458static int 1459wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 1460{ 1461 struct ifnet *ifp = sc->sc_ifp; 1462 struct ieee80211com *ic = ifp->if_l2com; 1463 const struct wpi_chan_band *band = &wpi_bands[n]; 1464 int error; 1465 1466 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1467 1468 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1469 band->nchan * sizeof (struct wpi_eeprom_chan)); 1470 if (error != 0) { 1471 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1472 return error; 1473 } 1474 1475 wpi_read_eeprom_band(sc, n); 1476 1477 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1478 1479 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1480 1481 return 0; 1482} 1483 1484static struct wpi_eeprom_chan * 1485wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1486{ 1487 int i, j; 1488 1489 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1490 for (i = 0; i < wpi_bands[j].nchan; i++) 1491 if (wpi_bands[j].chan[i] == c->ic_ieee) 1492 return &sc->eeprom_channels[j][i]; 1493 1494 return NULL; 1495} 1496 1497/* 1498 * Enforce flags read from EEPROM. 1499 */ 1500static int 1501wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1502 int nchan, struct ieee80211_channel chans[]) 1503{ 1504 struct ifnet *ifp = ic->ic_ifp; 1505 struct wpi_softc *sc = ifp->if_softc; 1506 int i; 1507 1508 for (i = 0; i < nchan; i++) { 1509 struct ieee80211_channel *c = &chans[i]; 1510 struct wpi_eeprom_chan *channel; 1511 1512 channel = wpi_find_eeprom_channel(sc, c); 1513 if (channel == NULL) { 1514 if_printf(ic->ic_ifp, 1515 "%s: invalid channel %u freq %u/0x%x\n", 1516 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1517 return EINVAL; 1518 } 1519 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1520 } 1521 1522 return 0; 1523} 1524 1525static int 1526wpi_read_eeprom_group(struct wpi_softc *sc, int n) 1527{ 1528 struct wpi_power_group *group = &sc->groups[n]; 1529 struct wpi_eeprom_group rgroup; 1530 int i, error; 1531 1532 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1533 1534 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1535 &rgroup, sizeof rgroup)) != 0) { 1536 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1537 return error; 1538 } 1539 1540 /* Save TX power group information. */ 1541 group->chan = rgroup.chan; 1542 group->maxpwr = rgroup.maxpwr; 1543 /* Retrieve temperature at which the samples were taken. */ 1544 group->temp = (int16_t)le16toh(rgroup.temp); 1545 1546 DPRINTF(sc, WPI_DEBUG_EEPROM, 1547 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1548 group->maxpwr, group->temp); 1549 1550 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1551 group->samples[i].index = rgroup.samples[i].index; 1552 group->samples[i].power = rgroup.samples[i].power; 1553 1554 DPRINTF(sc, WPI_DEBUG_EEPROM, 1555 "\tsample %d: index=%d power=%d\n", i, 1556 group->samples[i].index, group->samples[i].power); 1557 } 1558 1559 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1560 1561 return 0; 1562} 1563 1564static int 1565wpi_add_node_entry_adhoc(struct wpi_softc *sc) 1566{ 1567 int newid = WPI_ID_IBSS_MIN; 1568 1569 for (; newid <= WPI_ID_IBSS_MAX; newid++) { 1570 if ((sc->nodesmsk & (1 << newid)) == 0) { 1571 sc->nodesmsk |= 1 << newid; 1572 return newid; 1573 } 1574 } 1575 1576 return WPI_ID_UNDEFINED; 1577} 1578 1579static __inline int 1580wpi_add_node_entry_sta(struct wpi_softc *sc) 1581{ 1582 sc->nodesmsk |= 1 << WPI_ID_BSS; 1583 1584 return WPI_ID_BSS; 1585} 1586 1587static __inline int 1588wpi_check_node_entry(struct wpi_softc *sc, uint8_t id) 1589{ 1590 if (id == WPI_ID_UNDEFINED) 1591 return 0; 1592 1593 return (sc->nodesmsk >> id) & 1; 1594} 1595 1596static __inline void 1597wpi_clear_node_table(struct wpi_softc *sc) 1598{ 1599 sc->nodesmsk = 0; 1600} 1601 1602static __inline void 1603wpi_del_node_entry(struct wpi_softc *sc, uint8_t id) 1604{ 1605 sc->nodesmsk &= ~(1 << id); 1606} 1607 1608static struct ieee80211_node * 1609wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1610{ 1611 struct wpi_node *wn; 1612 1613 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1614 M_NOWAIT | M_ZERO); 1615 1616 if (wn == NULL) 1617 return NULL; 1618 1619 wn->id = WPI_ID_UNDEFINED; 1620 1621 return &wn->ni; 1622} 1623 1624static void 1625wpi_node_free(struct ieee80211_node *ni) 1626{ 1627 struct ieee80211com *ic = ni->ni_ic; 1628 struct wpi_softc *sc = ic->ic_ifp->if_softc; 1629 struct wpi_node *wn = WPI_NODE(ni); 1630 1631 if (wn->id != WPI_ID_UNDEFINED) { 1632 WPI_NT_LOCK(sc); 1633 if (wpi_check_node_entry(sc, wn->id)) { 1634 wpi_del_node_entry(sc, wn->id); 1635 wpi_del_node(sc, ni); 1636 } 1637 WPI_NT_UNLOCK(sc); 1638 } 1639 1640 sc->sc_node_free(ni); 1641} 1642 1643/** 1644 * Called by net80211 when ever there is a change to 80211 state machine 1645 */ 1646static int 1647wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1648{ 1649 struct wpi_vap *wvp = WPI_VAP(vap); 1650 struct ieee80211com *ic = vap->iv_ic; 1651 struct ifnet *ifp = ic->ic_ifp; 1652 struct wpi_softc *sc = ifp->if_softc; 1653 int error = 0; 1654 1655 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1656 1657 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1658 ieee80211_state_name[vap->iv_state], 1659 ieee80211_state_name[nstate]); 1660 1661 switch (nstate) { 1662 case IEEE80211_S_SCAN: 1663 WPI_RXON_LOCK(sc); 1664 if ((sc->rxon.filter & htole32(WPI_FILTER_BSS)) && 1665 vap->iv_opmode != IEEE80211_M_STA) { 1666 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1667 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1668 device_printf(sc->sc_dev, 1669 "%s: could not send RXON\n", __func__); 1670 } 1671 } 1672 WPI_RXON_UNLOCK(sc); 1673 break; 1674 1675 case IEEE80211_S_ASSOC: 1676 if (vap->iv_state != IEEE80211_S_RUN) 1677 break; 1678 /* FALLTHROUGH */ 1679 case IEEE80211_S_AUTH: 1680 /* 1681 * The node must be registered in the firmware before auth. 1682 * Also the associd must be cleared on RUN -> ASSOC 1683 * transitions. 1684 */ 1685 if ((error = wpi_auth(sc, vap)) != 0) { 1686 device_printf(sc->sc_dev, 1687 "%s: could not move to AUTH state, error %d\n", 1688 __func__, error); 1689 } 1690 break; 1691 1692 case IEEE80211_S_RUN: 1693 /* 1694 * RUN -> RUN transition; Just restart the timers. 1695 */ 1696 if (vap->iv_state == IEEE80211_S_RUN) { 1697 WPI_RXON_LOCK(sc); 1698 wpi_calib_timeout(sc); 1699 WPI_RXON_UNLOCK(sc); 1700 break; 1701 } 1702 1703 /* 1704 * !RUN -> RUN requires setting the association id 1705 * which is done with a firmware cmd. We also defer 1706 * starting the timers until that work is done. 1707 */ 1708 if ((error = wpi_run(sc, vap)) != 0) { 1709 device_printf(sc->sc_dev, 1710 "%s: could not move to RUN state\n", __func__); 1711 } 1712 break; 1713 1714 default: 1715 break; 1716 } 1717 if (error != 0) { 1718 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1719 return error; 1720 } 1721 1722 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1723 1724 return wvp->wv_newstate(vap, nstate, arg); 1725} 1726 1727static void 1728wpi_calib_timeout(void *arg) 1729{ 1730 struct wpi_softc *sc = arg; 1731 1732 if (!(sc->rxon.filter & htole32(WPI_FILTER_BSS))) 1733 return; 1734 1735 wpi_power_calibration(sc); 1736 1737 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1738} 1739 1740static __inline uint8_t 1741rate2plcp(const uint8_t rate) 1742{ 1743 switch (rate) { 1744 case 12: return 0xd; 1745 case 18: return 0xf; 1746 case 24: return 0x5; 1747 case 36: return 0x7; 1748 case 48: return 0x9; 1749 case 72: return 0xb; 1750 case 96: return 0x1; 1751 case 108: return 0x3; 1752 case 2: return 10; 1753 case 4: return 20; 1754 case 11: return 55; 1755 case 22: return 110; 1756 default: return 0; 1757 } 1758} 1759 1760static __inline uint8_t 1761plcp2rate(const uint8_t plcp) 1762{ 1763 switch (plcp) { 1764 case 0xd: return 12; 1765 case 0xf: return 18; 1766 case 0x5: return 24; 1767 case 0x7: return 36; 1768 case 0x9: return 48; 1769 case 0xb: return 72; 1770 case 0x1: return 96; 1771 case 0x3: return 108; 1772 case 10: return 2; 1773 case 20: return 4; 1774 case 55: return 11; 1775 case 110: return 22; 1776 default: return 0; 1777 } 1778} 1779 1780/* Quickly determine if a given rate is CCK or OFDM. */ 1781#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1782 1783static void 1784wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1785 struct wpi_rx_data *data) 1786{ 1787 struct ifnet *ifp = sc->sc_ifp; 1788 struct ieee80211com *ic = ifp->if_l2com; 1789 struct wpi_rx_ring *ring = &sc->rxq; 1790 struct wpi_rx_stat *stat; 1791 struct wpi_rx_head *head; 1792 struct wpi_rx_tail *tail; 1793 struct ieee80211_frame *wh; 1794 struct ieee80211_node *ni; 1795 struct mbuf *m, *m1; 1796 bus_addr_t paddr; 1797 uint32_t flags; 1798 uint16_t len; 1799 int error; 1800 1801 stat = (struct wpi_rx_stat *)(desc + 1); 1802 1803 if (stat->len > WPI_STAT_MAXLEN) { 1804 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1805 goto fail1; 1806 } 1807 1808 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1809 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1810 len = le16toh(head->len); 1811 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1812 flags = le32toh(tail->flags); 1813 1814 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1815 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1816 le32toh(desc->len), len, (int8_t)stat->rssi, 1817 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1818 1819 /* Discard frames with a bad FCS early. */ 1820 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1821 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1822 __func__, flags); 1823 goto fail1; 1824 } 1825 /* Discard frames that are too short. */ 1826 if (len < sizeof (*wh)) { 1827 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1828 __func__, len); 1829 goto fail1; 1830 } 1831 1832 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1833 if (m1 == NULL) { 1834 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1835 __func__); 1836 goto fail1; 1837 } 1838 bus_dmamap_unload(ring->data_dmat, data->map); 1839 1840 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1841 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1842 if (error != 0 && error != EFBIG) { 1843 device_printf(sc->sc_dev, 1844 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1845 m_freem(m1); 1846 1847 /* Try to reload the old mbuf. */ 1848 error = bus_dmamap_load(ring->data_dmat, data->map, 1849 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1850 &paddr, BUS_DMA_NOWAIT); 1851 if (error != 0 && error != EFBIG) { 1852 panic("%s: could not load old RX mbuf", __func__); 1853 } 1854 /* Physical address may have changed. */ 1855 ring->desc[ring->cur] = htole32(paddr); 1856 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1857 BUS_DMASYNC_PREWRITE); 1858 goto fail1; 1859 } 1860 1861 m = data->m; 1862 data->m = m1; 1863 /* Update RX descriptor. */ 1864 ring->desc[ring->cur] = htole32(paddr); 1865 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1866 BUS_DMASYNC_PREWRITE); 1867 1868 /* Finalize mbuf. */ 1869 m->m_pkthdr.rcvif = ifp; 1870 m->m_data = (caddr_t)(head + 1); 1871 m->m_pkthdr.len = m->m_len = len; 1872 1873 /* Grab a reference to the source node. */ 1874 wh = mtod(m, struct ieee80211_frame *); 1875 1876 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 1877 (flags & WPI_RX_CIPHER_MASK) == WPI_RX_CIPHER_CCMP) { 1878 /* Check whether decryption was successful or not. */ 1879 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 1880 DPRINTF(sc, WPI_DEBUG_RECV, 1881 "CCMP decryption failed 0x%x\n", flags); 1882 goto fail2; 1883 } 1884 m->m_flags |= M_WEP; 1885 } 1886 1887 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1888 1889 if (ieee80211_radiotap_active(ic)) { 1890 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1891 1892 tap->wr_flags = 0; 1893 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 1894 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1895 tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET); 1896 tap->wr_dbm_antnoise = WPI_RSSI_OFFSET; 1897 tap->wr_tsft = tail->tstamp; 1898 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1899 tap->wr_rate = plcp2rate(head->plcp); 1900 } 1901 1902 WPI_UNLOCK(sc); 1903 1904 /* Send the frame to the 802.11 layer. */ 1905 if (ni != NULL) { 1906 (void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET); 1907 /* Node is no longer needed. */ 1908 ieee80211_free_node(ni); 1909 } else 1910 (void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET); 1911 1912 WPI_LOCK(sc); 1913 1914 return; 1915 1916fail2: m_freem(m); 1917 1918fail1: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1919} 1920 1921static void 1922wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1923 struct wpi_rx_data *data) 1924{ 1925 /* Ignore */ 1926} 1927 1928static void 1929wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1930{ 1931 struct ifnet *ifp = sc->sc_ifp; 1932 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1933 struct wpi_tx_data *data = &ring->data[desc->idx]; 1934 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1935 struct mbuf *m; 1936 struct ieee80211_node *ni; 1937 struct ieee80211vap *vap; 1938 struct ieee80211com *ic; 1939 uint32_t status = le32toh(stat->status); 1940 int ackfailcnt = stat->ackfailcnt / 2; /* wpi_mrr_setup() */ 1941 1942 KASSERT(data->ni != NULL, ("no node")); 1943 KASSERT(data->m != NULL, ("no mbuf")); 1944 1945 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1946 1947 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 1948 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 1949 "status %x\n", __func__, desc->qid, desc->idx, ackfailcnt, 1950 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 1951 1952 /* Unmap and free mbuf. */ 1953 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1954 bus_dmamap_unload(ring->data_dmat, data->map); 1955 m = data->m, data->m = NULL; 1956 ni = data->ni, data->ni = NULL; 1957 vap = ni->ni_vap; 1958 ic = vap->iv_ic; 1959 1960 /* 1961 * Update rate control statistics for the node. 1962 */ 1963 if ((status & 0xff) != 1) { 1964 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1965 ieee80211_ratectl_tx_complete(vap, ni, 1966 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 1967 } else { 1968 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1969 ieee80211_ratectl_tx_complete(vap, ni, 1970 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 1971 } 1972 1973 ieee80211_tx_complete(ni, m, (status & 0xff) != 1); 1974 1975 WPI_TXQ_STATE_LOCK(sc); 1976 ring->queued -= 1; 1977 if (ring->queued > 0) { 1978 callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc); 1979 1980 if (sc->qfullmsk != 0 && 1981 ring->queued < WPI_TX_RING_LOMARK) { 1982 sc->qfullmsk &= ~(1 << ring->qid); 1983 IF_LOCK(&ifp->if_snd); 1984 if (sc->qfullmsk == 0 && 1985 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 1986 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1987 IF_UNLOCK(&ifp->if_snd); 1988 ieee80211_runtask(ic, &sc->sc_start_task); 1989 } else 1990 IF_UNLOCK(&ifp->if_snd); 1991 } 1992 } else 1993 callout_stop(&sc->tx_timeout); 1994 WPI_TXQ_STATE_UNLOCK(sc); 1995 1996 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1997} 1998 1999/* 2000 * Process a "command done" firmware notification. This is where we wakeup 2001 * processes waiting for a synchronous command completion. 2002 */ 2003static void 2004wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 2005{ 2006 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 2007 struct wpi_tx_data *data; 2008 2009 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid %x idx %d flags %x " 2010 "type %s len %d\n", desc->qid, desc->idx, 2011 desc->flags, wpi_cmd_str(desc->type), 2012 le32toh(desc->len)); 2013 2014 if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM) 2015 return; /* Not a command ack. */ 2016 2017 KASSERT(ring->queued == 0, ("ring->queued must be 0")); 2018 2019 data = &ring->data[desc->idx]; 2020 2021 /* If the command was mapped in an mbuf, free it. */ 2022 if (data->m != NULL) { 2023 bus_dmamap_sync(ring->data_dmat, data->map, 2024 BUS_DMASYNC_POSTWRITE); 2025 bus_dmamap_unload(ring->data_dmat, data->map); 2026 m_freem(data->m); 2027 data->m = NULL; 2028 } 2029 2030 wakeup(&ring->cmd[desc->idx]); 2031} 2032 2033static void 2034wpi_notif_intr(struct wpi_softc *sc) 2035{ 2036 struct ifnet *ifp = sc->sc_ifp; 2037 struct ieee80211com *ic = ifp->if_l2com; 2038 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2039 uint32_t hw; 2040 2041 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 2042 BUS_DMASYNC_POSTREAD); 2043 2044 hw = le32toh(sc->shared->next); 2045 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 2046 2047 while (sc->rxq.cur != hw) { 2048 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 2049 2050 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 2051 struct wpi_rx_desc *desc; 2052 2053 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2054 BUS_DMASYNC_POSTREAD); 2055 desc = mtod(data->m, struct wpi_rx_desc *); 2056 2057 DPRINTF(sc, WPI_DEBUG_NOTIFY, 2058 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 2059 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 2060 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 2061 2062 if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) { 2063 /* Reply to a command. */ 2064 wpi_cmd_done(sc, desc); 2065 } 2066 2067 switch (desc->type) { 2068 case WPI_RX_DONE: 2069 /* An 802.11 frame has been received. */ 2070 wpi_rx_done(sc, desc, data); 2071 2072 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2073 /* wpi_stop() was called. */ 2074 return; 2075 } 2076 2077 break; 2078 2079 case WPI_TX_DONE: 2080 /* An 802.11 frame has been transmitted. */ 2081 wpi_tx_done(sc, desc); 2082 break; 2083 2084 case WPI_RX_STATISTICS: 2085 case WPI_BEACON_STATISTICS: 2086 wpi_rx_statistics(sc, desc, data); 2087 break; 2088 2089 case WPI_BEACON_MISSED: 2090 { 2091 struct wpi_beacon_missed *miss = 2092 (struct wpi_beacon_missed *)(desc + 1); 2093 uint32_t misses; 2094 2095 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2096 BUS_DMASYNC_POSTREAD); 2097 misses = le32toh(miss->consecutive); 2098 2099 DPRINTF(sc, WPI_DEBUG_STATE, 2100 "%s: beacons missed %d/%d\n", __func__, misses, 2101 le32toh(miss->total)); 2102 2103 if (vap->iv_state == IEEE80211_S_RUN && 2104 (ic->ic_flags & IEEE80211_F_SCAN) == 0 && 2105 misses >= vap->iv_bmissthreshold) 2106 ieee80211_beacon_miss(ic); 2107 2108 break; 2109 } 2110 case WPI_UC_READY: 2111 { 2112 struct wpi_ucode_info *uc = 2113 (struct wpi_ucode_info *)(desc + 1); 2114 2115 /* The microcontroller is ready. */ 2116 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2117 BUS_DMASYNC_POSTREAD); 2118 DPRINTF(sc, WPI_DEBUG_RESET, 2119 "microcode alive notification version=%d.%d " 2120 "subtype=%x alive=%x\n", uc->major, uc->minor, 2121 uc->subtype, le32toh(uc->valid)); 2122 2123 if (le32toh(uc->valid) != 1) { 2124 device_printf(sc->sc_dev, 2125 "microcontroller initialization failed\n"); 2126 wpi_stop_locked(sc); 2127 } 2128 /* Save the address of the error log in SRAM. */ 2129 sc->errptr = le32toh(uc->errptr); 2130 break; 2131 } 2132 case WPI_STATE_CHANGED: 2133 { 2134 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2135 BUS_DMASYNC_POSTREAD); 2136 2137 uint32_t *status = (uint32_t *)(desc + 1); 2138 2139 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2140 le32toh(*status)); 2141 2142 if (le32toh(*status) & 1) { 2143 WPI_NT_LOCK(sc); 2144 wpi_clear_node_table(sc); 2145 WPI_NT_UNLOCK(sc); 2146 ieee80211_runtask(ic, &sc->sc_radiooff_task); 2147 return; 2148 } 2149 break; 2150 } 2151 case WPI_START_SCAN: 2152 { 2153 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2154 BUS_DMASYNC_POSTREAD); 2155#ifdef WPI_DEBUG 2156 struct wpi_start_scan *scan = 2157 (struct wpi_start_scan *)(desc + 1); 2158 DPRINTF(sc, WPI_DEBUG_SCAN, 2159 "%s: scanning channel %d status %x\n", 2160 __func__, scan->chan, le32toh(scan->status)); 2161#endif 2162 break; 2163 } 2164 case WPI_STOP_SCAN: 2165 { 2166 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2167 BUS_DMASYNC_POSTREAD); 2168#ifdef WPI_DEBUG 2169 struct wpi_stop_scan *scan = 2170 (struct wpi_stop_scan *)(desc + 1); 2171 DPRINTF(sc, WPI_DEBUG_SCAN, 2172 "scan finished nchan=%d status=%d chan=%d\n", 2173 scan->nchan, scan->status, scan->chan); 2174#endif 2175 WPI_RXON_LOCK(sc); 2176 callout_stop(&sc->scan_timeout); 2177 WPI_RXON_UNLOCK(sc); 2178 ieee80211_scan_next(vap); 2179 break; 2180 } 2181 } 2182 } 2183 2184 /* Tell the firmware what we have processed. */ 2185 wpi_update_rx_ring(sc); 2186} 2187 2188/* 2189 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2190 * from power-down sleep mode. 2191 */ 2192static void 2193wpi_wakeup_intr(struct wpi_softc *sc) 2194{ 2195 int qid; 2196 2197 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2198 "%s: ucode wakeup from power-down sleep\n", __func__); 2199 2200 /* Wakeup RX and TX rings. */ 2201 if (sc->rxq.update) { 2202 sc->rxq.update = 0; 2203 wpi_update_rx_ring(sc); 2204 } 2205 WPI_TXQ_LOCK(sc); 2206 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) { 2207 struct wpi_tx_ring *ring = &sc->txq[qid]; 2208 2209 if (ring->update) { 2210 ring->update = 0; 2211 wpi_update_tx_ring(sc, ring); 2212 } 2213 } 2214 WPI_TXQ_UNLOCK(sc); 2215 2216 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2217} 2218 2219/* 2220 * This function prints firmware registers 2221 */ 2222#ifdef WPI_DEBUG 2223static void 2224wpi_debug_registers(struct wpi_softc *sc) 2225{ 2226#define COUNTOF(array) (sizeof(array) / sizeof(array[0])) 2227 int i; 2228 static const uint32_t csr_tbl[] = { 2229 WPI_HW_IF_CONFIG, 2230 WPI_INT, 2231 WPI_INT_MASK, 2232 WPI_FH_INT, 2233 WPI_GPIO_IN, 2234 WPI_RESET, 2235 WPI_GP_CNTRL, 2236 WPI_EEPROM, 2237 WPI_EEPROM_GP, 2238 WPI_GIO, 2239 WPI_UCODE_GP1, 2240 WPI_UCODE_GP2, 2241 WPI_GIO_CHICKEN, 2242 WPI_ANA_PLL, 2243 WPI_DBG_HPET_MEM, 2244 }; 2245 static const uint32_t prph_tbl[] = { 2246 WPI_APMG_CLK_CTRL, 2247 WPI_APMG_PS, 2248 WPI_APMG_PCI_STT, 2249 WPI_APMG_RFKILL, 2250 }; 2251 2252 DPRINTF(sc, WPI_DEBUG_REGISTER,"%s","\n"); 2253 2254 for (i = 0; i < COUNTOF(csr_tbl); i++) { 2255 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2256 wpi_get_csr_string(csr_tbl[i]), WPI_READ(sc, csr_tbl[i])); 2257 2258 if ((i + 1) % 2 == 0) 2259 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2260 } 2261 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n\n"); 2262 2263 if (wpi_nic_lock(sc) == 0) { 2264 for (i = 0; i < COUNTOF(prph_tbl); i++) { 2265 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2266 wpi_get_prph_string(prph_tbl[i]), 2267 wpi_prph_read(sc, prph_tbl[i])); 2268 2269 if ((i + 1) % 2 == 0) 2270 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2271 } 2272 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2273 wpi_nic_unlock(sc); 2274 } else { 2275 DPRINTF(sc, WPI_DEBUG_REGISTER, 2276 "Cannot access internal registers.\n"); 2277 } 2278#undef COUNTOF 2279} 2280#endif 2281 2282/* 2283 * Dump the error log of the firmware when a firmware panic occurs. Although 2284 * we can't debug the firmware because it is neither open source nor free, it 2285 * can help us to identify certain classes of problems. 2286 */ 2287static void 2288wpi_fatal_intr(struct wpi_softc *sc) 2289{ 2290 struct wpi_fw_dump dump; 2291 uint32_t i, offset, count; 2292 const uint32_t size_errmsg = 2293 (sizeof (wpi_fw_errmsg) / sizeof ((wpi_fw_errmsg)[0])); 2294 2295 /* Check that the error log address is valid. */ 2296 if (sc->errptr < WPI_FW_DATA_BASE || 2297 sc->errptr + sizeof (dump) > 2298 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2299 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2300 sc->errptr); 2301 return; 2302 } 2303 if (wpi_nic_lock(sc) != 0) { 2304 printf("%s: could not read firmware error log\n", __func__); 2305 return; 2306 } 2307 /* Read number of entries in the log. */ 2308 count = wpi_mem_read(sc, sc->errptr); 2309 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2310 printf("%s: invalid count field (count = %u)\n", __func__, 2311 count); 2312 wpi_nic_unlock(sc); 2313 return; 2314 } 2315 /* Skip "count" field. */ 2316 offset = sc->errptr + sizeof (uint32_t); 2317 printf("firmware error log (count = %u):\n", count); 2318 for (i = 0; i < count; i++) { 2319 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2320 sizeof (dump) / sizeof (uint32_t)); 2321 2322 printf(" error type = \"%s\" (0x%08X)\n", 2323 (dump.desc < size_errmsg) ? 2324 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2325 dump.desc); 2326 printf(" error data = 0x%08X\n", 2327 dump.data); 2328 printf(" branch link = 0x%08X%08X\n", 2329 dump.blink[0], dump.blink[1]); 2330 printf(" interrupt link = 0x%08X%08X\n", 2331 dump.ilink[0], dump.ilink[1]); 2332 printf(" time = %u\n", dump.time); 2333 2334 offset += sizeof (dump); 2335 } 2336 wpi_nic_unlock(sc); 2337 /* Dump driver status (TX and RX rings) while we're here. */ 2338 printf("driver status:\n"); 2339 WPI_TXQ_LOCK(sc); 2340 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 2341 struct wpi_tx_ring *ring = &sc->txq[i]; 2342 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2343 i, ring->qid, ring->cur, ring->queued); 2344 } 2345 WPI_TXQ_UNLOCK(sc); 2346 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2347} 2348 2349static void 2350wpi_intr(void *arg) 2351{ 2352 struct wpi_softc *sc = arg; 2353 struct ifnet *ifp = sc->sc_ifp; 2354 uint32_t r1, r2; 2355 2356 WPI_LOCK(sc); 2357 2358 /* Disable interrupts. */ 2359 WPI_WRITE(sc, WPI_INT_MASK, 0); 2360 2361 r1 = WPI_READ(sc, WPI_INT); 2362 2363 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) 2364 goto end; /* Hardware gone! */ 2365 2366 r2 = WPI_READ(sc, WPI_FH_INT); 2367 2368 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2369 r1, r2); 2370 2371 if (r1 == 0 && r2 == 0) 2372 goto done; /* Interrupt not for us. */ 2373 2374 /* Acknowledge interrupts. */ 2375 WPI_WRITE(sc, WPI_INT, r1); 2376 WPI_WRITE(sc, WPI_FH_INT, r2); 2377 2378 if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) { 2379 struct ieee80211com *ic = ifp->if_l2com; 2380 2381 device_printf(sc->sc_dev, "fatal firmware error\n"); 2382#ifdef WPI_DEBUG 2383 wpi_debug_registers(sc); 2384#endif 2385 wpi_fatal_intr(sc); 2386 DPRINTF(sc, WPI_DEBUG_HW, 2387 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2388 "(Hardware Error)"); 2389 ieee80211_runtask(ic, &sc->sc_reinittask); 2390 goto end; 2391 } 2392 2393 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2394 (r2 & WPI_FH_INT_RX)) 2395 wpi_notif_intr(sc); 2396 2397 if (r1 & WPI_INT_ALIVE) 2398 wakeup(sc); /* Firmware is alive. */ 2399 2400 if (r1 & WPI_INT_WAKEUP) 2401 wpi_wakeup_intr(sc); 2402 2403done: 2404 /* Re-enable interrupts. */ 2405 if (ifp->if_flags & IFF_UP) 2406 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2407 2408end: WPI_UNLOCK(sc); 2409} 2410 2411static int 2412wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2413{ 2414 struct ifnet *ifp = sc->sc_ifp; 2415 struct ieee80211_frame *wh; 2416 struct wpi_tx_cmd *cmd; 2417 struct wpi_tx_data *data; 2418 struct wpi_tx_desc *desc; 2419 struct wpi_tx_ring *ring; 2420 struct mbuf *m1; 2421 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2422 int error, i, hdrlen, nsegs, totlen, pad; 2423 2424 WPI_TXQ_LOCK(sc); 2425 2426 KASSERT(buf->size <= sizeof(buf->data), ("buffer overflow")); 2427 2428 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2429 2430 if (sc->txq_active == 0) { 2431 /* wpi_stop() was called */ 2432 error = ENETDOWN; 2433 goto fail; 2434 } 2435 2436 wh = mtod(buf->m, struct ieee80211_frame *); 2437 hdrlen = ieee80211_anyhdrsize(wh); 2438 totlen = buf->m->m_pkthdr.len; 2439 2440 if (hdrlen & 3) { 2441 /* First segment length must be a multiple of 4. */ 2442 pad = 4 - (hdrlen & 3); 2443 } else 2444 pad = 0; 2445 2446 ring = &sc->txq[buf->ac]; 2447 desc = &ring->desc[ring->cur]; 2448 data = &ring->data[ring->cur]; 2449 2450 /* Prepare TX firmware command. */ 2451 cmd = &ring->cmd[ring->cur]; 2452 cmd->code = buf->code; 2453 cmd->flags = 0; 2454 cmd->qid = ring->qid; 2455 cmd->idx = ring->cur; 2456 2457 memcpy(cmd->data, buf->data, buf->size); 2458 2459 /* Save and trim IEEE802.11 header. */ 2460 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen); 2461 m_adj(buf->m, hdrlen); 2462 2463 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2464 segs, &nsegs, BUS_DMA_NOWAIT); 2465 if (error != 0 && error != EFBIG) { 2466 device_printf(sc->sc_dev, 2467 "%s: can't map mbuf (error %d)\n", __func__, error); 2468 goto fail; 2469 } 2470 if (error != 0) { 2471 /* Too many DMA segments, linearize mbuf. */ 2472 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1); 2473 if (m1 == NULL) { 2474 device_printf(sc->sc_dev, 2475 "%s: could not defrag mbuf\n", __func__); 2476 error = ENOBUFS; 2477 goto fail; 2478 } 2479 buf->m = m1; 2480 2481 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2482 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2483 if (error != 0) { 2484 device_printf(sc->sc_dev, 2485 "%s: can't map mbuf (error %d)\n", __func__, 2486 error); 2487 goto fail; 2488 } 2489 } 2490 2491 KASSERT(nsegs < WPI_MAX_SCATTER, 2492 ("too many DMA segments, nsegs (%d) should be less than %d", 2493 nsegs, WPI_MAX_SCATTER)); 2494 2495 data->m = buf->m; 2496 data->ni = buf->ni; 2497 2498 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2499 __func__, ring->qid, ring->cur, totlen, nsegs); 2500 2501 /* Fill TX descriptor. */ 2502 desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs); 2503 /* First DMA segment is used by the TX command. */ 2504 desc->segs[0].addr = htole32(data->cmd_paddr); 2505 desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad); 2506 /* Other DMA segments are for data payload. */ 2507 seg = &segs[0]; 2508 for (i = 1; i <= nsegs; i++) { 2509 desc->segs[i].addr = htole32(seg->ds_addr); 2510 desc->segs[i].len = htole32(seg->ds_len); 2511 seg++; 2512 } 2513 2514 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2515 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2516 BUS_DMASYNC_PREWRITE); 2517 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2518 BUS_DMASYNC_PREWRITE); 2519 2520 /* Kick TX ring. */ 2521 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2522 wpi_update_tx_ring(sc, ring); 2523 2524 if (ring->qid < WPI_CMD_QUEUE_NUM) { 2525 /* Mark TX ring as full if we reach a certain threshold. */ 2526 WPI_TXQ_STATE_LOCK(sc); 2527 if (++ring->queued > WPI_TX_RING_HIMARK) { 2528 sc->qfullmsk |= 1 << ring->qid; 2529 2530 IF_LOCK(&ifp->if_snd); 2531 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2532 IF_UNLOCK(&ifp->if_snd); 2533 } 2534 2535 callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc); 2536 WPI_TXQ_STATE_UNLOCK(sc); 2537 } 2538 2539 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2540 2541 WPI_TXQ_UNLOCK(sc); 2542 2543 return 0; 2544 2545fail: m_freem(buf->m); 2546 2547 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2548 2549 WPI_TXQ_UNLOCK(sc); 2550 2551 return error; 2552} 2553 2554/* 2555 * Construct the data packet for a transmit buffer. 2556 */ 2557static int 2558wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2559{ 2560 const struct ieee80211_txparam *tp; 2561 struct ieee80211vap *vap = ni->ni_vap; 2562 struct ieee80211com *ic = ni->ni_ic; 2563 struct wpi_node *wn = WPI_NODE(ni); 2564 struct ieee80211_channel *chan; 2565 struct ieee80211_frame *wh; 2566 struct ieee80211_key *k = NULL; 2567 struct wpi_buf tx_data; 2568 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2569 uint32_t flags; 2570 uint16_t qos; 2571 uint8_t tid, type; 2572 int ac, error, swcrypt, rate, ismcast, totlen; 2573 2574 wh = mtod(m, struct ieee80211_frame *); 2575 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2576 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2577 2578 /* Select EDCA Access Category and TX ring for this frame. */ 2579 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2580 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2581 tid = qos & IEEE80211_QOS_TID; 2582 } else { 2583 qos = 0; 2584 tid = 0; 2585 } 2586 ac = M_WME_GETAC(m); 2587 2588 chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ? 2589 ni->ni_chan : ic->ic_curchan; 2590 tp = &vap->iv_txparms[ieee80211_chan2mode(chan)]; 2591 2592 /* Choose a TX rate index. */ 2593 if (type == IEEE80211_FC0_TYPE_MGT) 2594 rate = tp->mgmtrate; 2595 else if (ismcast) 2596 rate = tp->mcastrate; 2597 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2598 rate = tp->ucastrate; 2599 else if (m->m_flags & M_EAPOL) 2600 rate = tp->mgmtrate; 2601 else { 2602 /* XXX pass pktlen */ 2603 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2604 rate = ni->ni_txrate; 2605 } 2606 2607 /* Encrypt the frame if need be. */ 2608 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2609 /* Retrieve key for TX. */ 2610 k = ieee80211_crypto_encap(ni, m); 2611 if (k == NULL) { 2612 error = ENOBUFS; 2613 goto fail; 2614 } 2615 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2616 2617 /* 802.11 header may have moved. */ 2618 wh = mtod(m, struct ieee80211_frame *); 2619 } 2620 totlen = m->m_pkthdr.len; 2621 2622 if (ieee80211_radiotap_active_vap(vap)) { 2623 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2624 2625 tap->wt_flags = 0; 2626 tap->wt_rate = rate; 2627 if (k != NULL) 2628 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2629 2630 ieee80211_radiotap_tx(vap, m); 2631 } 2632 2633 flags = 0; 2634 if (!ismcast) { 2635 /* Unicast frame, check if an ACK is expected. */ 2636 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2637 IEEE80211_QOS_ACKPOLICY_NOACK) 2638 flags |= WPI_TX_NEED_ACK; 2639 } 2640 2641 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2642 flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */ 2643 2644 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2645 if (!ismcast) { 2646 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2647 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2648 flags |= WPI_TX_NEED_RTS; 2649 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2650 WPI_RATE_IS_OFDM(rate)) { 2651 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2652 flags |= WPI_TX_NEED_CTS; 2653 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2654 flags |= WPI_TX_NEED_RTS; 2655 } 2656 2657 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2658 flags |= WPI_TX_FULL_TXOP; 2659 } 2660 2661 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2662 if (type == IEEE80211_FC0_TYPE_MGT) { 2663 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2664 2665 /* Tell HW to set timestamp in probe responses. */ 2666 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2667 flags |= WPI_TX_INSERT_TSTAMP; 2668 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2669 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2670 tx->timeout = htole16(3); 2671 else 2672 tx->timeout = htole16(2); 2673 } 2674 2675 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2676 tx->id = WPI_ID_BROADCAST; 2677 else { 2678 if (wn->id == WPI_ID_UNDEFINED) { 2679 device_printf(sc->sc_dev, 2680 "%s: undefined node id\n", __func__); 2681 error = EINVAL; 2682 goto fail; 2683 } 2684 2685 tx->id = wn->id; 2686 } 2687 2688 if (type != IEEE80211_FC0_TYPE_MGT) 2689 tx->data_ntries = tp->maxretry; 2690 2691 if (k != NULL && !swcrypt) { 2692 switch (k->wk_cipher->ic_cipher) { 2693 case IEEE80211_CIPHER_AES_CCM: 2694 tx->security = WPI_CIPHER_CCMP; 2695 break; 2696 2697 default: 2698 break; 2699 } 2700 2701 memcpy(tx->key, k->wk_key, k->wk_keylen); 2702 } 2703 2704 tx->len = htole16(totlen); 2705 tx->flags = htole32(flags); 2706 tx->plcp = rate2plcp(rate); 2707 tx->tid = tid; 2708 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2709 tx->ofdm_mask = 0xff; 2710 tx->cck_mask = 0x0f; 2711 tx->rts_ntries = 7; 2712 2713 tx_data.ni = ni; 2714 tx_data.m = m; 2715 tx_data.size = sizeof(struct wpi_cmd_data); 2716 tx_data.code = WPI_CMD_TX_DATA; 2717 tx_data.ac = ac; 2718 2719 return wpi_cmd2(sc, &tx_data); 2720 2721fail: m_freem(m); 2722 return error; 2723} 2724 2725static int 2726wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, 2727 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 2728{ 2729 struct ieee80211vap *vap = ni->ni_vap; 2730 struct ieee80211_key *k = NULL; 2731 struct ieee80211_frame *wh; 2732 struct wpi_buf tx_data; 2733 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2734 uint32_t flags; 2735 uint8_t type; 2736 int ac, rate, swcrypt, totlen; 2737 2738 wh = mtod(m, struct ieee80211_frame *); 2739 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2740 2741 ac = params->ibp_pri & 3; 2742 2743 /* Choose a TX rate index. */ 2744 rate = params->ibp_rate0; 2745 2746 flags = 0; 2747 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2748 flags |= WPI_TX_NEED_ACK; 2749 if (params->ibp_flags & IEEE80211_BPF_RTS) 2750 flags |= WPI_TX_NEED_RTS; 2751 if (params->ibp_flags & IEEE80211_BPF_CTS) 2752 flags |= WPI_TX_NEED_CTS; 2753 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2754 flags |= WPI_TX_FULL_TXOP; 2755 2756 /* Encrypt the frame if need be. */ 2757 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) { 2758 /* Retrieve key for TX. */ 2759 k = ieee80211_crypto_encap(ni, m); 2760 if (k == NULL) { 2761 m_freem(m); 2762 return ENOBUFS; 2763 } 2764 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2765 2766 /* 802.11 header may have moved. */ 2767 wh = mtod(m, struct ieee80211_frame *); 2768 } 2769 totlen = m->m_pkthdr.len; 2770 2771 if (ieee80211_radiotap_active_vap(vap)) { 2772 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2773 2774 tap->wt_flags = 0; 2775 tap->wt_rate = rate; 2776 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) 2777 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2778 2779 ieee80211_radiotap_tx(vap, m); 2780 } 2781 2782 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2783 if (type == IEEE80211_FC0_TYPE_MGT) { 2784 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2785 2786 /* Tell HW to set timestamp in probe responses. */ 2787 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2788 flags |= WPI_TX_INSERT_TSTAMP; 2789 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2790 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2791 tx->timeout = htole16(3); 2792 else 2793 tx->timeout = htole16(2); 2794 } 2795 2796 if (k != NULL && !swcrypt) { 2797 switch (k->wk_cipher->ic_cipher) { 2798 case IEEE80211_CIPHER_AES_CCM: 2799 tx->security = WPI_CIPHER_CCMP; 2800 break; 2801 2802 default: 2803 break; 2804 } 2805 2806 memcpy(tx->key, k->wk_key, k->wk_keylen); 2807 } 2808 2809 tx->len = htole16(totlen); 2810 tx->flags = htole32(flags); 2811 tx->plcp = rate2plcp(rate); 2812 tx->id = WPI_ID_BROADCAST; 2813 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2814 tx->rts_ntries = params->ibp_try1; 2815 tx->data_ntries = params->ibp_try0; 2816 2817 tx_data.ni = ni; 2818 tx_data.m = m; 2819 tx_data.size = sizeof(struct wpi_cmd_data); 2820 tx_data.code = WPI_CMD_TX_DATA; 2821 tx_data.ac = ac; 2822 2823 return wpi_cmd2(sc, &tx_data); 2824} 2825 2826static int 2827wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2828 const struct ieee80211_bpf_params *params) 2829{ 2830 struct ieee80211com *ic = ni->ni_ic; 2831 struct ifnet *ifp = ic->ic_ifp; 2832 struct wpi_softc *sc = ifp->if_softc; 2833 int error = 0; 2834 2835 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2836 2837 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2838 ieee80211_free_node(ni); 2839 m_freem(m); 2840 return ENETDOWN; 2841 } 2842 2843 WPI_TX_LOCK(sc); 2844 if (params == NULL) { 2845 /* 2846 * Legacy path; interpret frame contents to decide 2847 * precisely how to send the frame. 2848 */ 2849 error = wpi_tx_data(sc, m, ni); 2850 } else { 2851 /* 2852 * Caller supplied explicit parameters to use in 2853 * sending the frame. 2854 */ 2855 error = wpi_tx_data_raw(sc, m, ni, params); 2856 } 2857 WPI_TX_UNLOCK(sc); 2858 2859 if (error != 0) { 2860 /* NB: m is reclaimed on tx failure */ 2861 ieee80211_free_node(ni); 2862 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2863 2864 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2865 2866 return error; 2867 } 2868 2869 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2870 2871 return 0; 2872} 2873 2874/** 2875 * Process data waiting to be sent on the IFNET output queue 2876 */ 2877static void 2878wpi_start(struct ifnet *ifp) 2879{ 2880 struct wpi_softc *sc = ifp->if_softc; 2881 struct ieee80211_node *ni; 2882 struct mbuf *m; 2883 2884 WPI_TX_LOCK(sc); 2885 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 2886 2887 for (;;) { 2888 IF_LOCK(&ifp->if_snd); 2889 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2890 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 2891 IF_UNLOCK(&ifp->if_snd); 2892 break; 2893 } 2894 IF_UNLOCK(&ifp->if_snd); 2895 2896 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2897 if (m == NULL) 2898 break; 2899 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 2900 if (wpi_tx_data(sc, m, ni) != 0) { 2901 ieee80211_free_node(ni); 2902 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2903 } 2904 } 2905 2906 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 2907 WPI_TX_UNLOCK(sc); 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 2937static void 2938wpi_scan_timeout(void *arg) 2939{ 2940 struct wpi_softc *sc = arg; 2941 struct ifnet *ifp = sc->sc_ifp; 2942 struct ieee80211com *ic = ifp->if_l2com; 2943 2944 if_printf(ifp, "scan timeout\n"); 2945 ieee80211_runtask(ic, &sc->sc_reinittask); 2946} 2947 2948static void 2949wpi_tx_timeout(void *arg) 2950{ 2951 struct wpi_softc *sc = arg; 2952 struct ifnet *ifp = sc->sc_ifp; 2953 struct ieee80211com *ic = ifp->if_l2com; 2954 2955 if_printf(ifp, "device timeout\n"); 2956 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2957 ieee80211_runtask(ic, &sc->sc_reinittask); 2958} 2959 2960static int 2961wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2962{ 2963 struct wpi_softc *sc = ifp->if_softc; 2964 struct ieee80211com *ic = ifp->if_l2com; 2965 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2966 struct ifreq *ifr = (struct ifreq *) data; 2967 int error = 0; 2968 2969 switch (cmd) { 2970 case SIOCGIFADDR: 2971 error = ether_ioctl(ifp, cmd, data); 2972 break; 2973 case SIOCSIFFLAGS: 2974 if (ifp->if_flags & IFF_UP) { 2975 wpi_init(sc); 2976 2977 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 && 2978 vap != NULL) 2979 ieee80211_stop(vap); 2980 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 2981 wpi_stop(sc); 2982 break; 2983 case SIOCGIFMEDIA: 2984 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2985 break; 2986 default: 2987 error = EINVAL; 2988 break; 2989 } 2990 return error; 2991} 2992 2993/* 2994 * Send a command to the firmware. 2995 */ 2996static int 2997wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size, 2998 int async) 2999{ 3000 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 3001 struct wpi_tx_desc *desc; 3002 struct wpi_tx_data *data; 3003 struct wpi_tx_cmd *cmd; 3004 struct mbuf *m; 3005 bus_addr_t paddr; 3006 int totlen, error; 3007 3008 WPI_TXQ_LOCK(sc); 3009 3010 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3011 3012 if (sc->txq_active == 0) { 3013 /* wpi_stop() was called */ 3014 error = 0; 3015 goto fail; 3016 } 3017 3018 if (async == 0) 3019 WPI_LOCK_ASSERT(sc); 3020 3021 DPRINTF(sc, WPI_DEBUG_CMD, "%s: cmd %s size %zu async %d\n", 3022 __func__, wpi_cmd_str(code), size, async); 3023 3024 desc = &ring->desc[ring->cur]; 3025 data = &ring->data[ring->cur]; 3026 totlen = 4 + size; 3027 3028 if (size > sizeof cmd->data) { 3029 /* Command is too large to fit in a descriptor. */ 3030 if (totlen > MCLBYTES) { 3031 error = EINVAL; 3032 goto fail; 3033 } 3034 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 3035 if (m == NULL) { 3036 error = ENOMEM; 3037 goto fail; 3038 } 3039 cmd = mtod(m, struct wpi_tx_cmd *); 3040 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 3041 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 3042 if (error != 0) { 3043 m_freem(m); 3044 goto fail; 3045 } 3046 data->m = m; 3047 } else { 3048 cmd = &ring->cmd[ring->cur]; 3049 paddr = data->cmd_paddr; 3050 } 3051 3052 cmd->code = code; 3053 cmd->flags = 0; 3054 cmd->qid = ring->qid; 3055 cmd->idx = ring->cur; 3056 memcpy(cmd->data, buf, size); 3057 3058 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 3059 desc->segs[0].addr = htole32(paddr); 3060 desc->segs[0].len = htole32(totlen); 3061 3062 if (size > sizeof cmd->data) { 3063 bus_dmamap_sync(ring->data_dmat, data->map, 3064 BUS_DMASYNC_PREWRITE); 3065 } else { 3066 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 3067 BUS_DMASYNC_PREWRITE); 3068 } 3069 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 3070 BUS_DMASYNC_PREWRITE); 3071 3072 /* Kick command ring. */ 3073 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 3074 wpi_update_tx_ring(sc, ring); 3075 3076 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3077 3078 WPI_TXQ_UNLOCK(sc); 3079 3080 if (async) 3081 return 0; 3082 3083 return mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 3084 3085fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3086 3087 WPI_TXQ_UNLOCK(sc); 3088 3089 return error; 3090} 3091 3092/* 3093 * Configure HW multi-rate retries. 3094 */ 3095static int 3096wpi_mrr_setup(struct wpi_softc *sc) 3097{ 3098 struct ifnet *ifp = sc->sc_ifp; 3099 struct ieee80211com *ic = ifp->if_l2com; 3100 struct wpi_mrr_setup mrr; 3101 int i, error; 3102 3103 /* CCK rates (not used with 802.11a). */ 3104 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 3105 mrr.rates[i].flags = 0; 3106 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3107 /* Fallback to the immediate lower CCK rate (if any.) */ 3108 mrr.rates[i].next = 3109 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 3110 /* Try one time at this rate before falling back to "next". */ 3111 mrr.rates[i].ntries = 1; 3112 } 3113 /* OFDM rates (not used with 802.11b). */ 3114 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 3115 mrr.rates[i].flags = 0; 3116 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3117 /* Fallback to the immediate lower rate (if any.) */ 3118 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 3119 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 3120 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 3121 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 3122 i - 1; 3123 /* Try one time at this rate before falling back to "next". */ 3124 mrr.rates[i].ntries = 1; 3125 } 3126 /* Setup MRR for control frames. */ 3127 mrr.which = htole32(WPI_MRR_CTL); 3128 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3129 if (error != 0) { 3130 device_printf(sc->sc_dev, 3131 "could not setup MRR for control frames\n"); 3132 return error; 3133 } 3134 /* Setup MRR for data frames. */ 3135 mrr.which = htole32(WPI_MRR_DATA); 3136 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3137 if (error != 0) { 3138 device_printf(sc->sc_dev, 3139 "could not setup MRR for data frames\n"); 3140 return error; 3141 } 3142 return 0; 3143} 3144 3145static int 3146wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3147{ 3148 struct ieee80211com *ic = ni->ni_ic; 3149 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 3150 struct wpi_node *wn = WPI_NODE(ni); 3151 struct wpi_node_info node; 3152 int error; 3153 3154 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3155 3156 if (wn->id == WPI_ID_UNDEFINED) 3157 return EINVAL; 3158 3159 memset(&node, 0, sizeof node); 3160 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3161 node.id = wn->id; 3162 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3163 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3164 node.action = htole32(WPI_ACTION_SET_RATE); 3165 node.antenna = WPI_ANTENNA_BOTH; 3166 3167 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding node %d (%s)\n", __func__, 3168 wn->id, ether_sprintf(ni->ni_macaddr)); 3169 3170 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 3171 if (error != 0) { 3172 device_printf(sc->sc_dev, 3173 "%s: wpi_cmd() call failed with error code %d\n", __func__, 3174 error); 3175 return error; 3176 } 3177 3178 if (wvp->wv_gtk != 0) { 3179 error = wpi_set_global_keys(ni); 3180 if (error != 0) { 3181 device_printf(sc->sc_dev, 3182 "%s: error while setting global keys\n", __func__); 3183 return ENXIO; 3184 } 3185 } 3186 3187 return 0; 3188} 3189 3190/* 3191 * Broadcast node is used to send group-addressed and management frames. 3192 */ 3193static int 3194wpi_add_broadcast_node(struct wpi_softc *sc, int async) 3195{ 3196 struct ifnet *ifp = sc->sc_ifp; 3197 struct ieee80211com *ic = ifp->if_l2com; 3198 struct wpi_node_info node; 3199 3200 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3201 3202 memset(&node, 0, sizeof node); 3203 IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr); 3204 node.id = WPI_ID_BROADCAST; 3205 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3206 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3207 node.action = htole32(WPI_ACTION_SET_RATE); 3208 node.antenna = WPI_ANTENNA_BOTH; 3209 3210 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding broadcast node\n", __func__); 3211 3212 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 3213} 3214 3215static int 3216wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3217{ 3218 struct wpi_node *wn = WPI_NODE(ni); 3219 int error; 3220 3221 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3222 3223 wn->id = wpi_add_node_entry_sta(sc); 3224 3225 if ((error = wpi_add_node(sc, ni)) != 0) { 3226 wpi_del_node_entry(sc, wn->id); 3227 wn->id = WPI_ID_UNDEFINED; 3228 return error; 3229 } 3230 3231 return 0; 3232} 3233 3234static int 3235wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3236{ 3237 struct wpi_node *wn = WPI_NODE(ni); 3238 int error; 3239 3240 KASSERT(wn->id == WPI_ID_UNDEFINED, 3241 ("the node %d was added before", wn->id)); 3242 3243 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3244 3245 if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) { 3246 device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__); 3247 return ENOMEM; 3248 } 3249 3250 if ((error = wpi_add_node(sc, ni)) != 0) { 3251 wpi_del_node_entry(sc, wn->id); 3252 wn->id = WPI_ID_UNDEFINED; 3253 return error; 3254 } 3255 3256 return 0; 3257} 3258 3259static void 3260wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3261{ 3262 struct wpi_node *wn = WPI_NODE(ni); 3263 struct wpi_cmd_del_node node; 3264 int error; 3265 3266 KASSERT(wn->id != WPI_ID_UNDEFINED, ("undefined node id passed")); 3267 3268 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3269 3270 memset(&node, 0, sizeof node); 3271 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3272 node.count = 1; 3273 3274 DPRINTF(sc, WPI_DEBUG_NODE, "%s: deleting node %d (%s)\n", __func__, 3275 wn->id, ether_sprintf(ni->ni_macaddr)); 3276 3277 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3278 if (error != 0) { 3279 device_printf(sc->sc_dev, 3280 "%s: could not delete node %u, error %d\n", __func__, 3281 wn->id, error); 3282 } 3283} 3284 3285static int 3286wpi_updateedca(struct ieee80211com *ic) 3287{ 3288#define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3289 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3290 struct wpi_edca_params cmd; 3291 int aci, error; 3292 3293 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3294 3295 memset(&cmd, 0, sizeof cmd); 3296 cmd.flags = htole32(WPI_EDCA_UPDATE); 3297 for (aci = 0; aci < WME_NUM_AC; aci++) { 3298 const struct wmeParams *ac = 3299 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 3300 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3301 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3302 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3303 cmd.ac[aci].txoplimit = 3304 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3305 3306 DPRINTF(sc, WPI_DEBUG_EDCA, 3307 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3308 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3309 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3310 cmd.ac[aci].txoplimit); 3311 } 3312 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3313 3314 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3315 3316 return error; 3317#undef WPI_EXP2 3318} 3319 3320static void 3321wpi_set_promisc(struct wpi_softc *sc) 3322{ 3323 struct ifnet *ifp = sc->sc_ifp; 3324 struct ieee80211com *ic = ifp->if_l2com; 3325 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3326 uint32_t promisc_filter; 3327 3328 promisc_filter = WPI_FILTER_CTL; 3329 if (vap != NULL && vap->iv_opmode != IEEE80211_M_HOSTAP) 3330 promisc_filter |= WPI_FILTER_PROMISC; 3331 3332 if (ifp->if_flags & IFF_PROMISC) 3333 sc->rxon.filter |= htole32(promisc_filter); 3334 else 3335 sc->rxon.filter &= ~htole32(promisc_filter); 3336} 3337 3338static void 3339wpi_update_promisc(struct ifnet *ifp) 3340{ 3341 struct wpi_softc *sc = ifp->if_softc; 3342 3343 WPI_RXON_LOCK(sc); 3344 wpi_set_promisc(sc); 3345 3346 if (wpi_send_rxon(sc, 1, 1) != 0) { 3347 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3348 __func__); 3349 } 3350 WPI_RXON_UNLOCK(sc); 3351} 3352 3353static void 3354wpi_update_mcast(struct ifnet *ifp) 3355{ 3356 /* Ignore */ 3357} 3358 3359static void 3360wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3361{ 3362 struct wpi_cmd_led led; 3363 3364 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3365 3366 led.which = which; 3367 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3368 led.off = off; 3369 led.on = on; 3370 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3371} 3372 3373static int 3374wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3375{ 3376 struct wpi_cmd_timing cmd; 3377 uint64_t val, mod; 3378 3379 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3380 3381 memset(&cmd, 0, sizeof cmd); 3382 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3383 cmd.bintval = htole16(ni->ni_intval); 3384 cmd.lintval = htole16(10); 3385 3386 /* Compute remaining time until next beacon. */ 3387 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3388 mod = le64toh(cmd.tstamp) % val; 3389 cmd.binitval = htole32((uint32_t)(val - mod)); 3390 3391 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3392 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3393 3394 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3395} 3396 3397/* 3398 * This function is called periodically (every 60 seconds) to adjust output 3399 * power to temperature changes. 3400 */ 3401static void 3402wpi_power_calibration(struct wpi_softc *sc) 3403{ 3404 int temp; 3405 3406 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3407 3408 /* Update sensor data. */ 3409 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3410 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3411 3412 /* Sanity-check read value. */ 3413 if (temp < -260 || temp > 25) { 3414 /* This can't be correct, ignore. */ 3415 DPRINTF(sc, WPI_DEBUG_TEMP, 3416 "out-of-range temperature reported: %d\n", temp); 3417 return; 3418 } 3419 3420 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3421 3422 /* Adjust Tx power if need be. */ 3423 if (abs(temp - sc->temp) <= 6) 3424 return; 3425 3426 sc->temp = temp; 3427 3428 if (wpi_set_txpower(sc, 1) != 0) { 3429 /* just warn, too bad for the automatic calibration... */ 3430 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3431 } 3432} 3433 3434/* 3435 * Set TX power for current channel. 3436 */ 3437static int 3438wpi_set_txpower(struct wpi_softc *sc, int async) 3439{ 3440 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3441 struct ieee80211_channel *ch; 3442 struct wpi_power_group *group; 3443 struct wpi_cmd_txpower cmd; 3444 uint8_t chan; 3445 int idx, i; 3446 3447 /* Retrieve current channel from last RXON. */ 3448 chan = sc->rxon.chan; 3449 ch = &ic->ic_channels[chan]; 3450 3451 /* Find the TX power group to which this channel belongs. */ 3452 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3453 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3454 if (chan <= group->chan) 3455 break; 3456 } else 3457 group = &sc->groups[0]; 3458 3459 memset(&cmd, 0, sizeof cmd); 3460 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1; 3461 cmd.chan = htole16(chan); 3462 3463 /* Set TX power for all OFDM and CCK rates. */ 3464 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3465 /* Retrieve TX power for this channel/rate. */ 3466 idx = wpi_get_power_index(sc, group, ch, i); 3467 3468 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3469 3470 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3471 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3472 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3473 } else { 3474 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3475 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3476 } 3477 DPRINTF(sc, WPI_DEBUG_TEMP, 3478 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3479 } 3480 3481 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3482} 3483 3484/* 3485 * Determine Tx power index for a given channel/rate combination. 3486 * This takes into account the regulatory information from EEPROM and the 3487 * current temperature. 3488 */ 3489static int 3490wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3491 struct ieee80211_channel *c, int ridx) 3492{ 3493/* Fixed-point arithmetic division using a n-bit fractional part. */ 3494#define fdivround(a, b, n) \ 3495 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3496 3497/* Linear interpolation. */ 3498#define interpolate(x, x1, y1, x2, y2, n) \ 3499 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3500 3501 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3502 struct wpi_power_sample *sample; 3503 int pwr, idx; 3504 u_int chan; 3505 3506 /* Get channel number. */ 3507 chan = ieee80211_chan2ieee(ic, c); 3508 3509 /* Default TX power is group maximum TX power minus 3dB. */ 3510 pwr = group->maxpwr / 2; 3511 3512 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3513 switch (ridx) { 3514 case WPI_RIDX_OFDM36: 3515 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3516 break; 3517 case WPI_RIDX_OFDM48: 3518 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3519 break; 3520 case WPI_RIDX_OFDM54: 3521 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3522 break; 3523 } 3524 3525 /* Never exceed the channel maximum allowed TX power. */ 3526 pwr = min(pwr, sc->maxpwr[chan]); 3527 3528 /* Retrieve TX power index into gain tables from samples. */ 3529 for (sample = group->samples; sample < &group->samples[3]; sample++) 3530 if (pwr > sample[1].power) 3531 break; 3532 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3533 idx = interpolate(pwr, sample[0].power, sample[0].index, 3534 sample[1].power, sample[1].index, 19); 3535 3536 /*- 3537 * Adjust power index based on current temperature: 3538 * - if cooler than factory-calibrated: decrease output power 3539 * - if warmer than factory-calibrated: increase output power 3540 */ 3541 idx -= (sc->temp - group->temp) * 11 / 100; 3542 3543 /* Decrease TX power for CCK rates (-5dB). */ 3544 if (ridx >= WPI_RIDX_CCK1) 3545 idx += 10; 3546 3547 /* Make sure idx stays in a valid range. */ 3548 if (idx < 0) 3549 return 0; 3550 if (idx > WPI_MAX_PWR_INDEX) 3551 return WPI_MAX_PWR_INDEX; 3552 return idx; 3553 3554#undef interpolate 3555#undef fdivround 3556} 3557 3558/* 3559 * Set STA mode power saving level (between 0 and 5). 3560 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3561 */ 3562static int 3563wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3564{ 3565 struct wpi_pmgt_cmd cmd; 3566 const struct wpi_pmgt *pmgt; 3567 uint32_t max, skip_dtim; 3568 uint32_t reg; 3569 int i; 3570 3571 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3572 "%s: dtim=%d, level=%d, async=%d\n", 3573 __func__, dtim, level, async); 3574 3575 /* Select which PS parameters to use. */ 3576 if (dtim <= 10) 3577 pmgt = &wpi_pmgt[0][level]; 3578 else 3579 pmgt = &wpi_pmgt[1][level]; 3580 3581 memset(&cmd, 0, sizeof cmd); 3582 if (level != 0) /* not CAM */ 3583 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3584 /* Retrieve PCIe Active State Power Management (ASPM). */ 3585 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 3586 if (!(reg & 0x1)) /* L0s Entry disabled. */ 3587 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3588 3589 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3590 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3591 3592 if (dtim == 0) { 3593 dtim = 1; 3594 skip_dtim = 0; 3595 } else 3596 skip_dtim = pmgt->skip_dtim; 3597 3598 if (skip_dtim != 0) { 3599 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3600 max = pmgt->intval[4]; 3601 if (max == (uint32_t)-1) 3602 max = dtim * (skip_dtim + 1); 3603 else if (max > dtim) 3604 max = (max / dtim) * dtim; 3605 } else 3606 max = dtim; 3607 3608 for (i = 0; i < 5; i++) 3609 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3610 3611 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3612} 3613 3614static int 3615wpi_send_btcoex(struct wpi_softc *sc) 3616{ 3617 struct wpi_bluetooth cmd; 3618 3619 memset(&cmd, 0, sizeof cmd); 3620 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3621 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3622 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3623 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3624 __func__); 3625 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3626} 3627 3628static int 3629wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3630{ 3631 int error; 3632 3633 if (async) 3634 WPI_RXON_LOCK_ASSERT(sc); 3635 3636 if (assoc && (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3637 struct wpi_assoc rxon_assoc; 3638 3639 rxon_assoc.flags = sc->rxon.flags; 3640 rxon_assoc.filter = sc->rxon.filter; 3641 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3642 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3643 rxon_assoc.reserved = 0; 3644 3645 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3646 sizeof (struct wpi_assoc), async); 3647 if (error != 0) { 3648 device_printf(sc->sc_dev, 3649 "RXON_ASSOC command failed, error %d\n", error); 3650 return error; 3651 } 3652 } else { 3653 if (async) { 3654 WPI_NT_LOCK(sc); 3655 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3656 sizeof (struct wpi_rxon), async); 3657 if (error == 0) 3658 wpi_clear_node_table(sc); 3659 WPI_NT_UNLOCK(sc); 3660 } else { 3661 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3662 sizeof (struct wpi_rxon), async); 3663 if (error == 0) 3664 wpi_clear_node_table(sc); 3665 } 3666 3667 if (error != 0) { 3668 device_printf(sc->sc_dev, 3669 "RXON command failed, error %d\n", error); 3670 return error; 3671 } 3672 3673 /* Add broadcast node. */ 3674 error = wpi_add_broadcast_node(sc, async); 3675 if (error != 0) { 3676 device_printf(sc->sc_dev, 3677 "could not add broadcast node, error %d\n", error); 3678 return error; 3679 } 3680 } 3681 3682 /* Configuration has changed, set Tx power accordingly. */ 3683 if ((error = wpi_set_txpower(sc, async)) != 0) { 3684 device_printf(sc->sc_dev, 3685 "%s: could not set TX power, error %d\n", __func__, error); 3686 return error; 3687 } 3688 3689 return 0; 3690} 3691 3692/** 3693 * Configure the card to listen to a particular channel, this transisions the 3694 * card in to being able to receive frames from remote devices. 3695 */ 3696static int 3697wpi_config(struct wpi_softc *sc) 3698{ 3699 struct ifnet *ifp = sc->sc_ifp; 3700 struct ieee80211com *ic = ifp->if_l2com; 3701 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3702 uint32_t flags; 3703 int error; 3704 3705 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3706 3707 /* Set power saving level to CAM during initialization. */ 3708 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3709 device_printf(sc->sc_dev, 3710 "%s: could not set power saving level\n", __func__); 3711 return error; 3712 } 3713 3714 /* Configure bluetooth coexistence. */ 3715 if ((error = wpi_send_btcoex(sc)) != 0) { 3716 device_printf(sc->sc_dev, 3717 "could not configure bluetooth coexistence\n"); 3718 return error; 3719 } 3720 3721 /* Configure adapter. */ 3722 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3723 IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr); 3724 3725 /* Set default channel. */ 3726 sc->rxon.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3727 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3728 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 3729 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3730 3731 sc->rxon.filter = WPI_FILTER_MULTICAST; 3732 switch (ic->ic_opmode) { 3733 case IEEE80211_M_STA: 3734 sc->rxon.mode = WPI_MODE_STA; 3735 break; 3736 case IEEE80211_M_IBSS: 3737 sc->rxon.mode = WPI_MODE_IBSS; 3738 sc->rxon.filter |= WPI_FILTER_BEACON; 3739 break; 3740 case IEEE80211_M_HOSTAP: 3741 /* XXX workaround for beaconing */ 3742 sc->rxon.mode = WPI_MODE_IBSS; 3743 sc->rxon.filter |= WPI_FILTER_ASSOC | WPI_FILTER_PROMISC; 3744 break; 3745 case IEEE80211_M_AHDEMO: 3746 /* XXX workaround for passive channels selection */ 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 = TAILQ_FIRST(&ic->ic_vaps); 3814 int bintval = 0; 3815 3816 /* bintval is in TU (1.024mS) */ 3817 if (vap != NULL) 3818 bintval = vap->iv_bss->ni_intval; 3819 3820 /* 3821 * If it's non-zero, we should calculate the minimum of 3822 * it and the DWELL_BASE. 3823 * 3824 * XXX Yes, the math should take into account that bintval 3825 * is 1.024mS, not 1mS.. 3826 */ 3827 if (bintval > 0) { 3828 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 3829 bintval); 3830 return (MIN(WPI_PASSIVE_DWELL_BASE, ((bintval * 85) / 100))); 3831 } 3832 3833 /* No association context? Default. */ 3834 return (WPI_PASSIVE_DWELL_BASE); 3835} 3836 3837static uint16_t 3838wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 3839{ 3840 uint16_t passive; 3841 3842 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 3843 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 3844 else 3845 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 3846 3847 /* Clamp to the beacon interval if we're associated. */ 3848 return (wpi_limit_dwell(sc, passive)); 3849} 3850 3851/* 3852 * Send a scan request to the firmware. 3853 */ 3854static int 3855wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 3856{ 3857 struct ifnet *ifp = sc->sc_ifp; 3858 struct ieee80211com *ic = ifp->if_l2com; 3859 struct ieee80211_scan_state *ss = ic->ic_scan; 3860 struct ieee80211vap *vap = ss->ss_vap; 3861 struct wpi_scan_hdr *hdr; 3862 struct wpi_cmd_data *tx; 3863 struct wpi_scan_essid *essids; 3864 struct wpi_scan_chan *chan; 3865 struct ieee80211_frame *wh; 3866 struct ieee80211_rateset *rs; 3867 uint16_t dwell_active, dwell_passive; 3868 uint8_t *buf, *frm; 3869 int buflen, error, i, nssid; 3870 3871 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3872 3873 /* 3874 * We are absolutely not allowed to send a scan command when another 3875 * scan command is pending. 3876 */ 3877 if (callout_pending(&sc->scan_timeout)) { 3878 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 3879 __func__); 3880 3881 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3882 3883 return (EAGAIN); 3884 } 3885 3886 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 3887 if (buf == NULL) { 3888 device_printf(sc->sc_dev, 3889 "%s: could not allocate buffer for scan command\n", 3890 __func__); 3891 error = ENOMEM; 3892 goto fail; 3893 } 3894 hdr = (struct wpi_scan_hdr *)buf; 3895 3896 /* 3897 * Move to the next channel if no packets are received within 10 msecs 3898 * after sending the probe request. 3899 */ 3900 hdr->quiet_time = htole16(10); /* timeout in milliseconds */ 3901 hdr->quiet_threshold = htole16(1); /* min # of packets */ 3902 /* 3903 * Max needs to be greater than active and passive and quiet! 3904 * It's also in microseconds! 3905 */ 3906 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 3907 hdr->pause_svc = htole32((4 << 24) | 3908 (100 * IEEE80211_DUR_TU)); /* Hardcode for now */ 3909 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 3910 3911 tx = (struct wpi_cmd_data *)(hdr + 1); 3912 tx->flags = htole32(WPI_TX_AUTO_SEQ); 3913 tx->id = WPI_ID_BROADCAST; 3914 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 3915 3916 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3917 /* Send probe requests at 6Mbps. */ 3918 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 3919 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 3920 } else { 3921 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 3922 /* Send probe requests at 1Mbps. */ 3923 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3924 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 3925 } 3926 3927 essids = (struct wpi_scan_essid *)(tx + 1); 3928 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 3929 for (i = 0; i < nssid; i++) { 3930 essids[i].id = IEEE80211_ELEMID_SSID; 3931 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 3932 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 3933#ifdef WPI_DEBUG 3934 if (sc->sc_debug & WPI_DEBUG_SCAN) { 3935 printf("Scanning Essid: "); 3936 ieee80211_print_essid(essids[i].data, essids[i].len); 3937 printf("\n"); 3938 } 3939#endif 3940 } 3941 3942 /* 3943 * Build a probe request frame. Most of the following code is a 3944 * copy & paste of what is done in net80211. 3945 */ 3946 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 3947 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 3948 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 3949 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 3950 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 3951 IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr); 3952 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 3953 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 3954 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 3955 3956 frm = (uint8_t *)(wh + 1); 3957 frm = ieee80211_add_ssid(frm, NULL, 0); 3958 frm = ieee80211_add_rates(frm, rs); 3959 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 3960 frm = ieee80211_add_xrates(frm, rs); 3961 3962 /* Set length of probe request. */ 3963 tx->len = htole16(frm - (uint8_t *)wh); 3964 3965 /* 3966 * Construct information about the channel that we 3967 * want to scan. The firmware expects this to be directly 3968 * after the scan probe request 3969 */ 3970 chan = (struct wpi_scan_chan *)frm; 3971 chan->chan = htole16(ieee80211_chan2ieee(ic, c)); 3972 chan->flags = 0; 3973 if (nssid) { 3974 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 3975 chan->flags |= WPI_CHAN_NPBREQS(nssid); 3976 } else 3977 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 3978 3979 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 3980 chan->flags |= WPI_CHAN_ACTIVE; 3981 3982 /* 3983 * Calculate the active/passive dwell times. 3984 */ 3985 3986 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 3987 dwell_passive = wpi_get_passive_dwell_time(sc, c); 3988 3989 /* Make sure they're valid. */ 3990 if (dwell_passive <= dwell_active) 3991 dwell_passive = dwell_active + 1; 3992 3993 chan->active = htole16(dwell_active); 3994 chan->passive = htole16(dwell_passive); 3995 3996 chan->dsp_gain = 0x6e; /* Default level */ 3997 3998 if (IEEE80211_IS_CHAN_5GHZ(c)) 3999 chan->rf_gain = 0x3b; 4000 else 4001 chan->rf_gain = 0x28; 4002 4003 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 4004 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 4005 4006 hdr->nchan++; 4007 chan++; 4008 4009 buflen = (uint8_t *)chan - buf; 4010 hdr->len = htole16(buflen); 4011 4012 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 4013 hdr->nchan); 4014 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 4015 free(buf, M_DEVBUF); 4016 4017 if (error != 0) 4018 goto fail; 4019 4020 callout_reset(&sc->scan_timeout, 5*hz, wpi_scan_timeout, sc); 4021 4022 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4023 4024 return 0; 4025 4026fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4027 4028 return error; 4029} 4030 4031static int 4032wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 4033{ 4034 struct ieee80211com *ic = vap->iv_ic; 4035 struct ieee80211_node *ni = vap->iv_bss; 4036 int error; 4037 4038 WPI_RXON_LOCK(sc); 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 WPI_RXON_UNLOCK(sc); 4078 4079 return error; 4080} 4081 4082static int 4083wpi_config_beacon(struct wpi_vap *wvp) 4084{ 4085 struct ieee80211com *ic = wvp->wv_vap.iv_ic; 4086 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4087 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4088 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4089 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 4090 struct ieee80211_tim_ie *tie; 4091 struct mbuf *m; 4092 uint8_t *ptr; 4093 int error; 4094 4095 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4096 4097 WPI_VAP_LOCK_ASSERT(wvp); 4098 4099 cmd->len = htole16(bcn->m->m_pkthdr.len); 4100 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 4101 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 4102 4103 /* XXX seems to be unused */ 4104 if (*(bo->bo_tim) == IEEE80211_ELEMID_TIM) { 4105 tie = (struct ieee80211_tim_ie *) bo->bo_tim; 4106 ptr = mtod(bcn->m, uint8_t *); 4107 4108 cmd->tim = htole16(bo->bo_tim - ptr); 4109 cmd->timsz = tie->tim_len; 4110 } 4111 4112 /* Necessary for recursion in ieee80211_beacon_update(). */ 4113 m = bcn->m; 4114 bcn->m = m_dup(m, M_NOWAIT); 4115 if (bcn->m == NULL) { 4116 device_printf(sc->sc_dev, 4117 "%s: could not copy beacon frame\n", __func__); 4118 error = ENOMEM; 4119 goto end; 4120 } 4121 4122 if ((error = wpi_cmd2(sc, bcn)) != 0) { 4123 device_printf(sc->sc_dev, 4124 "%s: could not update beacon frame, error %d", __func__, 4125 error); 4126 } 4127 4128 /* Restore mbuf. */ 4129end: bcn->m = m; 4130 4131 return error; 4132} 4133 4134static int 4135wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 4136{ 4137 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 4138 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4139 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4140 struct mbuf *m; 4141 int error; 4142 4143 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4144 4145 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 4146 return EINVAL; 4147 4148 m = ieee80211_beacon_alloc(ni, bo); 4149 if (m == NULL) { 4150 device_printf(sc->sc_dev, 4151 "%s: could not allocate beacon frame\n", __func__); 4152 return ENOMEM; 4153 } 4154 4155 WPI_VAP_LOCK(wvp); 4156 if (bcn->m != NULL) 4157 m_freem(bcn->m); 4158 4159 bcn->m = m; 4160 4161 error = wpi_config_beacon(wvp); 4162 WPI_VAP_UNLOCK(wvp); 4163 4164 return error; 4165} 4166 4167static void 4168wpi_update_beacon(struct ieee80211vap *vap, int item) 4169{ 4170 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 4171 struct wpi_vap *wvp = WPI_VAP(vap); 4172 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4173 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4174 struct ieee80211_node *ni = vap->iv_bss; 4175 int mcast = 0; 4176 4177 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4178 4179 WPI_VAP_LOCK(wvp); 4180 if (bcn->m == NULL) { 4181 bcn->m = ieee80211_beacon_alloc(ni, bo); 4182 if (bcn->m == NULL) { 4183 device_printf(sc->sc_dev, 4184 "%s: could not allocate beacon frame\n", __func__); 4185 4186 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, 4187 __func__); 4188 4189 WPI_VAP_UNLOCK(wvp); 4190 return; 4191 } 4192 } 4193 WPI_VAP_UNLOCK(wvp); 4194 4195 if (item == IEEE80211_BEACON_TIM) 4196 mcast = 1; /* TODO */ 4197 4198 setbit(bo->bo_flags, item); 4199 ieee80211_beacon_update(ni, bo, bcn->m, mcast); 4200 4201 WPI_VAP_LOCK(wvp); 4202 wpi_config_beacon(wvp); 4203 WPI_VAP_UNLOCK(wvp); 4204 4205 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4206} 4207 4208static void 4209wpi_newassoc(struct ieee80211_node *ni, int isnew) 4210{ 4211 struct ieee80211vap *vap = ni->ni_vap; 4212 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4213 struct wpi_node *wn = WPI_NODE(ni); 4214 int error; 4215 4216 WPI_NT_LOCK(sc); 4217 4218 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4219 4220 if (vap->iv_opmode != IEEE80211_M_STA && wn->id == WPI_ID_UNDEFINED) { 4221 if ((error = wpi_add_ibss_node(sc, ni)) != 0) { 4222 device_printf(sc->sc_dev, 4223 "%s: could not add IBSS node, error %d\n", 4224 __func__, error); 4225 } 4226 } 4227 WPI_NT_UNLOCK(sc); 4228} 4229 4230static int 4231wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 4232{ 4233 struct ieee80211com *ic = vap->iv_ic; 4234 struct ieee80211_node *ni = vap->iv_bss; 4235 int error; 4236 4237 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4238 4239 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 4240 /* Link LED blinks while monitoring. */ 4241 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 4242 return 0; 4243 } 4244 4245 /* XXX kernel panic workaround */ 4246 if (ni->ni_chan == IEEE80211_CHAN_ANYC) { 4247 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 4248 __func__); 4249 return EINVAL; 4250 } 4251 4252 if ((error = wpi_set_timing(sc, ni)) != 0) { 4253 device_printf(sc->sc_dev, 4254 "%s: could not set timing, error %d\n", __func__, error); 4255 return error; 4256 } 4257 4258 /* Update adapter configuration. */ 4259 WPI_RXON_LOCK(sc); 4260 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4261 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 4262 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 4263 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4264 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 4265 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4266 /* Short preamble and slot time are negotiated when associating. */ 4267 sc->rxon.flags &= ~htole32(WPI_RXON_SHPREAMBLE | WPI_RXON_SHSLOT); 4268 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4269 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4270 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4271 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4272 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 4273 sc->rxon.cck_mask = 0; 4274 sc->rxon.ofdm_mask = 0x15; 4275 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 4276 sc->rxon.cck_mask = 0x03; 4277 sc->rxon.ofdm_mask = 0; 4278 } else { 4279 /* Assume 802.11b/g. */ 4280 sc->rxon.cck_mask = 0x0f; 4281 sc->rxon.ofdm_mask = 0x15; 4282 } 4283 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 4284 4285 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 4286 sc->rxon.chan, sc->rxon.flags); 4287 4288 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4289 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4290 __func__); 4291 return error; 4292 } 4293 4294 /* Start periodic calibration timer. */ 4295 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 4296 4297 WPI_RXON_UNLOCK(sc); 4298 4299 if (vap->iv_opmode == IEEE80211_M_IBSS || 4300 vap->iv_opmode == IEEE80211_M_HOSTAP) { 4301 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 4302 device_printf(sc->sc_dev, 4303 "%s: could not setup beacon, error %d\n", __func__, 4304 error); 4305 return error; 4306 } 4307 } 4308 4309 if (vap->iv_opmode == IEEE80211_M_STA) { 4310 /* Add BSS node. */ 4311 WPI_NT_LOCK(sc); 4312 error = wpi_add_sta_node(sc, ni); 4313 WPI_NT_UNLOCK(sc); 4314 if (error != 0) { 4315 device_printf(sc->sc_dev, 4316 "%s: could not add BSS node, error %d\n", __func__, 4317 error); 4318 return error; 4319 } 4320 } 4321 4322 /* Link LED always on while associated. */ 4323 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4324 4325 /* Enable power-saving mode if requested by user. */ 4326 if ((vap->iv_flags & IEEE80211_F_PMGTON) && 4327 vap->iv_opmode != IEEE80211_M_IBSS) 4328 (void)wpi_set_pslevel(sc, 0, 3, 1); 4329 else 4330 (void)wpi_set_pslevel(sc, 0, 0, 1); 4331 4332 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4333 4334 return 0; 4335} 4336 4337static int 4338wpi_load_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4339{ 4340 const struct ieee80211_cipher *cip = k->wk_cipher; 4341 struct ieee80211vap *vap = ni->ni_vap; 4342 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4343 struct wpi_node *wn = WPI_NODE(ni); 4344 struct wpi_node_info node; 4345 uint16_t kflags; 4346 int error; 4347 4348 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4349 4350 if (wpi_check_node_entry(sc, wn->id) == 0) { 4351 device_printf(sc->sc_dev, "%s: node does not exist\n", 4352 __func__); 4353 return 0; 4354 } 4355 4356 switch (cip->ic_cipher) { 4357 case IEEE80211_CIPHER_AES_CCM: 4358 kflags = WPI_KFLAG_CCMP; 4359 break; 4360 4361 default: 4362 device_printf(sc->sc_dev, "%s: unknown cipher %d\n", __func__, 4363 cip->ic_cipher); 4364 return 0; 4365 } 4366 4367 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4368 if (k->wk_flags & IEEE80211_KEY_GROUP) 4369 kflags |= WPI_KFLAG_MULTICAST; 4370 4371 memset(&node, 0, sizeof node); 4372 node.id = wn->id; 4373 node.control = WPI_NODE_UPDATE; 4374 node.flags = WPI_FLAG_KEY_SET; 4375 node.kflags = htole16(kflags); 4376 memcpy(node.key, k->wk_key, k->wk_keylen); 4377again: 4378 DPRINTF(sc, WPI_DEBUG_KEY, 4379 "%s: setting %s key id %d for node %d (%s)\n", __func__, 4380 (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", k->wk_keyix, 4381 node.id, ether_sprintf(ni->ni_macaddr)); 4382 4383 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4384 if (error != 0) { 4385 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4386 error); 4387 return !error; 4388 } 4389 4390 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4391 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4392 kflags |= WPI_KFLAG_MULTICAST; 4393 node.kflags = htole16(kflags); 4394 4395 goto again; 4396 } 4397 4398 return 1; 4399} 4400 4401static void 4402wpi_load_key_cb(void *arg, struct ieee80211_node *ni) 4403{ 4404 const struct ieee80211_key *k = arg; 4405 struct ieee80211vap *vap = ni->ni_vap; 4406 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4407 struct wpi_node *wn = WPI_NODE(ni); 4408 int error; 4409 4410 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4411 return; 4412 4413 WPI_NT_LOCK(sc); 4414 error = wpi_load_key(ni, k); 4415 WPI_NT_UNLOCK(sc); 4416 4417 if (error == 0) { 4418 device_printf(sc->sc_dev, "%s: error while setting key\n", 4419 __func__); 4420 } 4421} 4422 4423static int 4424wpi_set_global_keys(struct ieee80211_node *ni) 4425{ 4426 struct ieee80211vap *vap = ni->ni_vap; 4427 struct ieee80211_key *wk = &vap->iv_nw_keys[0]; 4428 int error = 1; 4429 4430 for (; wk < &vap->iv_nw_keys[IEEE80211_WEP_NKID] && error; wk++) 4431 if (wk->wk_keyix != IEEE80211_KEYIX_NONE) 4432 error = wpi_load_key(ni, wk); 4433 4434 return !error; 4435} 4436 4437static int 4438wpi_del_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4439{ 4440 struct ieee80211vap *vap = ni->ni_vap; 4441 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4442 struct wpi_node *wn = WPI_NODE(ni); 4443 struct wpi_node_info node; 4444 uint16_t kflags; 4445 int error; 4446 4447 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4448 4449 if (wpi_check_node_entry(sc, wn->id) == 0) { 4450 DPRINTF(sc, WPI_DEBUG_KEY, "%s: node was removed\n", __func__); 4451 return 1; /* Nothing to do. */ 4452 } 4453 4454 kflags = WPI_KFLAG_KID(k->wk_keyix); 4455 if (k->wk_flags & IEEE80211_KEY_GROUP) 4456 kflags |= WPI_KFLAG_MULTICAST; 4457 4458 memset(&node, 0, sizeof node); 4459 node.id = wn->id; 4460 node.control = WPI_NODE_UPDATE; 4461 node.flags = WPI_FLAG_KEY_SET; 4462 node.kflags = htole16(kflags); 4463again: 4464 DPRINTF(sc, WPI_DEBUG_KEY, "%s: deleting %s key %d for node %d (%s)\n", 4465 __func__, (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", 4466 k->wk_keyix, node.id, ether_sprintf(ni->ni_macaddr)); 4467 4468 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4469 if (error != 0) { 4470 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4471 error); 4472 return !error; 4473 } 4474 4475 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4476 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4477 kflags |= WPI_KFLAG_MULTICAST; 4478 node.kflags = htole16(kflags); 4479 4480 goto again; 4481 } 4482 4483 return 1; 4484} 4485 4486static void 4487wpi_del_key_cb(void *arg, struct ieee80211_node *ni) 4488{ 4489 const struct ieee80211_key *k = arg; 4490 struct ieee80211vap *vap = ni->ni_vap; 4491 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4492 struct wpi_node *wn = WPI_NODE(ni); 4493 int error; 4494 4495 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4496 return; 4497 4498 WPI_NT_LOCK(sc); 4499 error = wpi_del_key(ni, k); 4500 WPI_NT_UNLOCK(sc); 4501 4502 if (error == 0) { 4503 device_printf(sc->sc_dev, "%s: error while deleting key\n", 4504 __func__); 4505 } 4506} 4507 4508static int 4509wpi_process_key(struct ieee80211vap *vap, const struct ieee80211_key *k, 4510 int set) 4511{ 4512 struct ieee80211com *ic = vap->iv_ic; 4513 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4514 struct wpi_vap *wvp = WPI_VAP(vap); 4515 struct ieee80211_node *ni; 4516 int error, ni_ref = 0; 4517 4518 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4519 4520 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) { 4521 /* Not for us. */ 4522 return 1; 4523 } 4524 4525 if (!(k->wk_flags & IEEE80211_KEY_RECV)) { 4526 /* XMIT keys are handled in wpi_tx_data(). */ 4527 return 1; 4528 } 4529 4530 /* Handle group keys. */ 4531 if (&vap->iv_nw_keys[0] <= k && 4532 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4533 WPI_NT_LOCK(sc); 4534 if (set) 4535 wvp->wv_gtk |= WPI_VAP_KEY(k->wk_keyix); 4536 else 4537 wvp->wv_gtk &= ~WPI_VAP_KEY(k->wk_keyix); 4538 WPI_NT_UNLOCK(sc); 4539 4540 if (vap->iv_state == IEEE80211_S_RUN) { 4541 ieee80211_iterate_nodes(&ic->ic_sta, 4542 set ? wpi_load_key_cb : wpi_del_key_cb, (void *)k); 4543 } 4544 4545 return 1; 4546 } 4547 4548 switch (vap->iv_opmode) { 4549 case IEEE80211_M_STA: 4550 ni = vap->iv_bss; 4551 break; 4552 4553 case IEEE80211_M_IBSS: 4554 case IEEE80211_M_AHDEMO: 4555 case IEEE80211_M_HOSTAP: 4556 ni = ieee80211_find_vap_node(&ic->ic_sta, vap, k->wk_macaddr); 4557 if (ni == NULL) 4558 return 0; /* should not happen */ 4559 4560 ni_ref = 1; 4561 break; 4562 4563 default: 4564 device_printf(sc->sc_dev, "%s: unknown opmode %d\n", __func__, 4565 vap->iv_opmode); 4566 return 0; 4567 } 4568 4569 WPI_NT_LOCK(sc); 4570 if (set) 4571 error = wpi_load_key(ni, k); 4572 else 4573 error = wpi_del_key(ni, k); 4574 WPI_NT_UNLOCK(sc); 4575 4576 if (ni_ref) 4577 ieee80211_node_decref(ni); 4578 4579 return error; 4580} 4581 4582static int 4583wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k, 4584 const uint8_t mac[IEEE80211_ADDR_LEN]) 4585{ 4586 return wpi_process_key(vap, k, 1); 4587} 4588 4589static int 4590wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4591{ 4592 return wpi_process_key(vap, k, 0); 4593} 4594 4595/* 4596 * This function is called after the runtime firmware notifies us of its 4597 * readiness (called in a process context). 4598 */ 4599static int 4600wpi_post_alive(struct wpi_softc *sc) 4601{ 4602 int ntries, error; 4603 4604 /* Check (again) that the radio is not disabled. */ 4605 if ((error = wpi_nic_lock(sc)) != 0) 4606 return error; 4607 4608 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4609 4610 /* NB: Runtime firmware must be up and running. */ 4611 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4612 device_printf(sc->sc_dev, 4613 "RF switch: radio disabled (%s)\n", __func__); 4614 wpi_nic_unlock(sc); 4615 return EPERM; /* :-) */ 4616 } 4617 wpi_nic_unlock(sc); 4618 4619 /* Wait for thermal sensor to calibrate. */ 4620 for (ntries = 0; ntries < 1000; ntries++) { 4621 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4622 break; 4623 DELAY(10); 4624 } 4625 4626 if (ntries == 1000) { 4627 device_printf(sc->sc_dev, 4628 "timeout waiting for thermal sensor calibration\n"); 4629 return ETIMEDOUT; 4630 } 4631 4632 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4633 return 0; 4634} 4635 4636/* 4637 * The firmware boot code is small and is intended to be copied directly into 4638 * the NIC internal memory (no DMA transfer). 4639 */ 4640static int 4641wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 4642{ 4643 int error, ntries; 4644 4645 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4646 4647 size /= sizeof (uint32_t); 4648 4649 if ((error = wpi_nic_lock(sc)) != 0) 4650 return error; 4651 4652 /* Copy microcode image into NIC memory. */ 4653 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4654 (const uint32_t *)ucode, size); 4655 4656 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4657 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4658 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4659 4660 /* Start boot load now. */ 4661 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4662 4663 /* Wait for transfer to complete. */ 4664 for (ntries = 0; ntries < 1000; ntries++) { 4665 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4666 DPRINTF(sc, WPI_DEBUG_HW, 4667 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4668 WPI_FH_TX_STATUS_IDLE(6), 4669 status & WPI_FH_TX_STATUS_IDLE(6)); 4670 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4671 DPRINTF(sc, WPI_DEBUG_HW, 4672 "Status Match! - ntries = %d\n", ntries); 4673 break; 4674 } 4675 DELAY(10); 4676 } 4677 if (ntries == 1000) { 4678 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4679 __func__); 4680 wpi_nic_unlock(sc); 4681 return ETIMEDOUT; 4682 } 4683 4684 /* Enable boot after power up. */ 4685 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4686 4687 wpi_nic_unlock(sc); 4688 return 0; 4689} 4690 4691static int 4692wpi_load_firmware(struct wpi_softc *sc) 4693{ 4694 struct wpi_fw_info *fw = &sc->fw; 4695 struct wpi_dma_info *dma = &sc->fw_dma; 4696 int error; 4697 4698 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4699 4700 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4701 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4702 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4703 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4704 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4705 4706 /* Tell adapter where to find initialization sections. */ 4707 if ((error = wpi_nic_lock(sc)) != 0) 4708 return error; 4709 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4710 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4711 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4712 dma->paddr + WPI_FW_DATA_MAXSZ); 4713 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4714 wpi_nic_unlock(sc); 4715 4716 /* Load firmware boot code. */ 4717 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4718 if (error != 0) { 4719 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4720 __func__); 4721 return error; 4722 } 4723 4724 /* Now press "execute". */ 4725 WPI_WRITE(sc, WPI_RESET, 0); 4726 4727 /* Wait at most one second for first alive notification. */ 4728 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4729 device_printf(sc->sc_dev, 4730 "%s: timeout waiting for adapter to initialize, error %d\n", 4731 __func__, error); 4732 return error; 4733 } 4734 4735 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4736 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4737 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4738 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4739 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4740 4741 /* Tell adapter where to find runtime sections. */ 4742 if ((error = wpi_nic_lock(sc)) != 0) 4743 return error; 4744 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4745 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 4746 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4747 dma->paddr + WPI_FW_DATA_MAXSZ); 4748 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 4749 WPI_FW_UPDATED | fw->main.textsz); 4750 wpi_nic_unlock(sc); 4751 4752 return 0; 4753} 4754 4755static int 4756wpi_read_firmware(struct wpi_softc *sc) 4757{ 4758 const struct firmware *fp; 4759 struct wpi_fw_info *fw = &sc->fw; 4760 const struct wpi_firmware_hdr *hdr; 4761 int error; 4762 4763 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4764 4765 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4766 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 4767 4768 WPI_UNLOCK(sc); 4769 fp = firmware_get(WPI_FW_NAME); 4770 WPI_LOCK(sc); 4771 4772 if (fp == NULL) { 4773 device_printf(sc->sc_dev, 4774 "could not load firmware image '%s'\n", WPI_FW_NAME); 4775 return EINVAL; 4776 } 4777 4778 sc->fw_fp = fp; 4779 4780 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 4781 device_printf(sc->sc_dev, 4782 "firmware file too short: %zu bytes\n", fp->datasize); 4783 error = EINVAL; 4784 goto fail; 4785 } 4786 4787 fw->size = fp->datasize; 4788 fw->data = (const uint8_t *)fp->data; 4789 4790 /* Extract firmware header information. */ 4791 hdr = (const struct wpi_firmware_hdr *)fw->data; 4792 4793 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 4794 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 4795 4796 fw->main.textsz = le32toh(hdr->rtextsz); 4797 fw->main.datasz = le32toh(hdr->rdatasz); 4798 fw->init.textsz = le32toh(hdr->itextsz); 4799 fw->init.datasz = le32toh(hdr->idatasz); 4800 fw->boot.textsz = le32toh(hdr->btextsz); 4801 fw->boot.datasz = 0; 4802 4803 /* Sanity-check firmware header. */ 4804 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 4805 fw->main.datasz > WPI_FW_DATA_MAXSZ || 4806 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 4807 fw->init.datasz > WPI_FW_DATA_MAXSZ || 4808 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 4809 (fw->boot.textsz & 3) != 0) { 4810 device_printf(sc->sc_dev, "invalid firmware header\n"); 4811 error = EINVAL; 4812 goto fail; 4813 } 4814 4815 /* Check that all firmware sections fit. */ 4816 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 4817 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 4818 device_printf(sc->sc_dev, 4819 "firmware file too short: %zu bytes\n", fw->size); 4820 error = EINVAL; 4821 goto fail; 4822 } 4823 4824 /* Get pointers to firmware sections. */ 4825 fw->main.text = (const uint8_t *)(hdr + 1); 4826 fw->main.data = fw->main.text + fw->main.textsz; 4827 fw->init.text = fw->main.data + fw->main.datasz; 4828 fw->init.data = fw->init.text + fw->init.textsz; 4829 fw->boot.text = fw->init.data + fw->init.datasz; 4830 4831 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4832 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 4833 "runtime (text: %u, data: %u) init (text: %u, data %u) " 4834 "boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver), 4835 fw->main.textsz, fw->main.datasz, 4836 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 4837 4838 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 4839 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 4840 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 4841 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 4842 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 4843 4844 return 0; 4845 4846fail: wpi_unload_firmware(sc); 4847 return error; 4848} 4849 4850/** 4851 * Free the referenced firmware image 4852 */ 4853static void 4854wpi_unload_firmware(struct wpi_softc *sc) 4855{ 4856 if (sc->fw_fp != NULL) { 4857 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 4858 sc->fw_fp = NULL; 4859 } 4860} 4861 4862static int 4863wpi_clock_wait(struct wpi_softc *sc) 4864{ 4865 int ntries; 4866 4867 /* Set "initialization complete" bit. */ 4868 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4869 4870 /* Wait for clock stabilization. */ 4871 for (ntries = 0; ntries < 2500; ntries++) { 4872 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 4873 return 0; 4874 DELAY(100); 4875 } 4876 device_printf(sc->sc_dev, 4877 "%s: timeout waiting for clock stabilization\n", __func__); 4878 4879 return ETIMEDOUT; 4880} 4881 4882static int 4883wpi_apm_init(struct wpi_softc *sc) 4884{ 4885 uint32_t reg; 4886 int error; 4887 4888 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4889 4890 /* Disable L0s exit timer (NMI bug workaround). */ 4891 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 4892 /* Don't wait for ICH L0s (ICH bug workaround). */ 4893 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 4894 4895 /* Set FH wait threshold to max (HW bug under stress workaround). */ 4896 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 4897 4898 /* Cleanup. */ 4899 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 0x00000400); 4900 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000E00); 4901 4902 /* Retrieve PCIe Active State Power Management (ASPM). */ 4903 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 4904 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 4905 if (reg & 0x02) /* L1 Entry enabled. */ 4906 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4907 else 4908 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4909 4910 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 4911 4912 /* Wait for clock stabilization before accessing prph. */ 4913 if ((error = wpi_clock_wait(sc)) != 0) 4914 return error; 4915 4916 if ((error = wpi_nic_lock(sc)) != 0) 4917 return error; 4918 /* Enable DMA and BSM (Bootstrap State Machine). */ 4919 wpi_prph_write(sc, WPI_APMG_CLK_EN, 4920 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 4921 DELAY(20); 4922 /* Disable L1-Active. */ 4923 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 4924 wpi_nic_unlock(sc); 4925 4926 return 0; 4927} 4928 4929static void 4930wpi_apm_stop_master(struct wpi_softc *sc) 4931{ 4932 int ntries; 4933 4934 /* Stop busmaster DMA activity. */ 4935 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 4936 4937 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 4938 WPI_GP_CNTRL_MAC_PS) 4939 return; /* Already asleep. */ 4940 4941 for (ntries = 0; ntries < 100; ntries++) { 4942 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 4943 return; 4944 DELAY(10); 4945 } 4946 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", 4947 __func__); 4948} 4949 4950static void 4951wpi_apm_stop(struct wpi_softc *sc) 4952{ 4953 wpi_apm_stop_master(sc); 4954 4955 /* Reset the entire device. */ 4956 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 4957 DELAY(10); 4958 /* Clear "initialization complete" bit. */ 4959 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4960} 4961 4962static void 4963wpi_nic_config(struct wpi_softc *sc) 4964{ 4965 uint32_t rev; 4966 4967 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4968 4969 /* voodoo from the Linux "driver".. */ 4970 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 4971 if ((rev & 0xc0) == 0x40) 4972 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 4973 else if (!(rev & 0x80)) 4974 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 4975 4976 if (sc->cap == 0x80) 4977 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 4978 4979 if ((sc->rev & 0xf0) == 0xd0) 4980 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4981 else 4982 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4983 4984 if (sc->type > 1) 4985 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 4986} 4987 4988static int 4989wpi_hw_init(struct wpi_softc *sc) 4990{ 4991 int chnl, ntries, error; 4992 4993 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4994 4995 /* Clear pending interrupts. */ 4996 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4997 4998 if ((error = wpi_apm_init(sc)) != 0) { 4999 device_printf(sc->sc_dev, 5000 "%s: could not power ON adapter, error %d\n", __func__, 5001 error); 5002 return error; 5003 } 5004 5005 /* Select VMAIN power source. */ 5006 if ((error = wpi_nic_lock(sc)) != 0) 5007 return error; 5008 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 5009 wpi_nic_unlock(sc); 5010 /* Spin until VMAIN gets selected. */ 5011 for (ntries = 0; ntries < 5000; ntries++) { 5012 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 5013 break; 5014 DELAY(10); 5015 } 5016 if (ntries == 5000) { 5017 device_printf(sc->sc_dev, "timeout selecting power source\n"); 5018 return ETIMEDOUT; 5019 } 5020 5021 /* Perform adapter initialization. */ 5022 wpi_nic_config(sc); 5023 5024 /* Initialize RX ring. */ 5025 if ((error = wpi_nic_lock(sc)) != 0) 5026 return error; 5027 /* Set physical address of RX ring. */ 5028 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 5029 /* Set physical address of RX read pointer. */ 5030 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 5031 offsetof(struct wpi_shared, next)); 5032 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 5033 /* Enable RX. */ 5034 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 5035 WPI_FH_RX_CONFIG_DMA_ENA | 5036 WPI_FH_RX_CONFIG_RDRBD_ENA | 5037 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 5038 WPI_FH_RX_CONFIG_MAXFRAG | 5039 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 5040 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 5041 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 5042 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 5043 wpi_nic_unlock(sc); 5044 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 5045 5046 /* Initialize TX rings. */ 5047 if ((error = wpi_nic_lock(sc)) != 0) 5048 return error; 5049 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 5050 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 5051 /* Enable all 6 TX rings. */ 5052 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 5053 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 5054 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 5055 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 5056 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 5057 /* Set physical address of TX rings. */ 5058 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 5059 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 5060 5061 /* Enable all DMA channels. */ 5062 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5063 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 5064 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 5065 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 5066 } 5067 wpi_nic_unlock(sc); 5068 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 5069 5070 /* Clear "radio off" and "commands blocked" bits. */ 5071 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5072 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 5073 5074 /* Clear pending interrupts. */ 5075 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5076 /* Enable interrupts. */ 5077 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 5078 5079 /* _Really_ make sure "radio off" bit is cleared! */ 5080 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5081 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5082 5083 if ((error = wpi_load_firmware(sc)) != 0) { 5084 device_printf(sc->sc_dev, 5085 "%s: could not load firmware, error %d\n", __func__, 5086 error); 5087 return error; 5088 } 5089 /* Wait at most one second for firmware alive notification. */ 5090 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 5091 device_printf(sc->sc_dev, 5092 "%s: timeout waiting for adapter to initialize, error %d\n", 5093 __func__, error); 5094 return error; 5095 } 5096 5097 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5098 5099 /* Do post-firmware initialization. */ 5100 return wpi_post_alive(sc); 5101} 5102 5103static void 5104wpi_hw_stop(struct wpi_softc *sc) 5105{ 5106 int chnl, qid, ntries; 5107 5108 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5109 5110 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 5111 wpi_nic_lock(sc); 5112 5113 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 5114 5115 /* Disable interrupts. */ 5116 WPI_WRITE(sc, WPI_INT_MASK, 0); 5117 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5118 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 5119 5120 /* Make sure we no longer hold the NIC lock. */ 5121 wpi_nic_unlock(sc); 5122 5123 if (wpi_nic_lock(sc) == 0) { 5124 /* Stop TX scheduler. */ 5125 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 5126 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 5127 5128 /* Stop all DMA channels. */ 5129 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5130 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 5131 for (ntries = 0; ntries < 200; ntries++) { 5132 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 5133 WPI_FH_TX_STATUS_IDLE(chnl)) 5134 break; 5135 DELAY(10); 5136 } 5137 } 5138 wpi_nic_unlock(sc); 5139 } 5140 5141 /* Stop RX ring. */ 5142 wpi_reset_rx_ring(sc); 5143 5144 /* Reset all TX rings. */ 5145 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 5146 wpi_reset_tx_ring(sc, &sc->txq[qid]); 5147 5148 if (wpi_nic_lock(sc) == 0) { 5149 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 5150 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 5151 wpi_nic_unlock(sc); 5152 } 5153 DELAY(5); 5154 /* Power OFF adapter. */ 5155 wpi_apm_stop(sc); 5156} 5157 5158static void 5159wpi_radio_on(void *arg0, int pending) 5160{ 5161 struct wpi_softc *sc = arg0; 5162 struct ifnet *ifp = sc->sc_ifp; 5163 struct ieee80211com *ic = ifp->if_l2com; 5164 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5165 5166 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 5167 5168 if (vap != NULL) { 5169 wpi_init(sc); 5170 ieee80211_init(vap); 5171 } 5172 5173 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) { 5174 WPI_LOCK(sc); 5175 callout_stop(&sc->watchdog_rfkill); 5176 WPI_UNLOCK(sc); 5177 } 5178} 5179 5180static void 5181wpi_radio_off(void *arg0, int pending) 5182{ 5183 struct wpi_softc *sc = arg0; 5184 struct ifnet *ifp = sc->sc_ifp; 5185 struct ieee80211com *ic = ifp->if_l2com; 5186 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5187 5188 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 5189 5190 wpi_stop(sc); 5191 if (vap != NULL) 5192 ieee80211_stop(vap); 5193 5194 WPI_LOCK(sc); 5195 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 5196 WPI_UNLOCK(sc); 5197} 5198 5199static void 5200wpi_init(void *arg) 5201{ 5202 struct wpi_softc *sc = arg; 5203 struct ifnet *ifp = sc->sc_ifp; 5204 struct ieee80211com *ic = ifp->if_l2com; 5205 int error; 5206 5207 WPI_LOCK(sc); 5208 5209 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 5210 5211 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 5212 goto end; 5213 5214 /* Check that the radio is not disabled by hardware switch. */ 5215 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 5216 device_printf(sc->sc_dev, 5217 "RF switch: radio disabled (%s)\n", __func__); 5218 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 5219 sc); 5220 goto end; 5221 } 5222 5223 /* Read firmware images from the filesystem. */ 5224 if ((error = wpi_read_firmware(sc)) != 0) { 5225 device_printf(sc->sc_dev, 5226 "%s: could not read firmware, error %d\n", __func__, 5227 error); 5228 goto fail; 5229 } 5230 5231 /* Initialize hardware and upload firmware. */ 5232 error = wpi_hw_init(sc); 5233 wpi_unload_firmware(sc); 5234 if (error != 0) { 5235 device_printf(sc->sc_dev, 5236 "%s: could not initialize hardware, error %d\n", __func__, 5237 error); 5238 goto fail; 5239 } 5240 5241 /* Configure adapter now that it is ready. */ 5242 sc->txq_active = 1; 5243 if ((error = wpi_config(sc)) != 0) { 5244 device_printf(sc->sc_dev, 5245 "%s: could not configure device, error %d\n", __func__, 5246 error); 5247 goto fail; 5248 } 5249 5250 IF_LOCK(&ifp->if_snd); 5251 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 5252 ifp->if_drv_flags |= IFF_DRV_RUNNING; 5253 IF_UNLOCK(&ifp->if_snd); 5254 5255 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5256 5257 WPI_UNLOCK(sc); 5258 5259 ieee80211_start_all(ic); 5260 5261 return; 5262 5263fail: wpi_stop_locked(sc); 5264end: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 5265 WPI_UNLOCK(sc); 5266} 5267 5268static void 5269wpi_stop_locked(struct wpi_softc *sc) 5270{ 5271 struct ifnet *ifp = sc->sc_ifp; 5272 5273 WPI_LOCK_ASSERT(sc); 5274 5275 WPI_TXQ_LOCK(sc); 5276 sc->txq_active = 0; 5277 WPI_TXQ_UNLOCK(sc); 5278 5279 WPI_TXQ_STATE_LOCK(sc); 5280 callout_stop(&sc->tx_timeout); 5281 WPI_TXQ_STATE_UNLOCK(sc); 5282 5283 WPI_RXON_LOCK(sc); 5284 callout_stop(&sc->scan_timeout); 5285 callout_stop(&sc->calib_to); 5286 WPI_RXON_UNLOCK(sc); 5287 5288 IF_LOCK(&ifp->if_snd); 5289 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 5290 IF_UNLOCK(&ifp->if_snd); 5291 5292 /* Power OFF hardware. */ 5293 wpi_hw_stop(sc); 5294} 5295 5296static void 5297wpi_stop(struct wpi_softc *sc) 5298{ 5299 WPI_LOCK(sc); 5300 wpi_stop_locked(sc); 5301 WPI_UNLOCK(sc); 5302} 5303 5304/* 5305 * Callback from net80211 to start a scan. 5306 */ 5307static void 5308wpi_scan_start(struct ieee80211com *ic) 5309{ 5310 struct wpi_softc *sc = ic->ic_ifp->if_softc; 5311 5312 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 5313} 5314 5315/* 5316 * Callback from net80211 to terminate a scan. 5317 */ 5318static void 5319wpi_scan_end(struct ieee80211com *ic) 5320{ 5321 struct ifnet *ifp = ic->ic_ifp; 5322 struct wpi_softc *sc = ifp->if_softc; 5323 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5324 5325 if (vap->iv_state == IEEE80211_S_RUN) 5326 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 5327} 5328 5329/** 5330 * Called by the net80211 framework to indicate to the driver 5331 * that the channel should be changed 5332 */ 5333static void 5334wpi_set_channel(struct ieee80211com *ic) 5335{ 5336 const struct ieee80211_channel *c = ic->ic_curchan; 5337 struct ifnet *ifp = ic->ic_ifp; 5338 struct wpi_softc *sc = ifp->if_softc; 5339 int error; 5340 5341 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5342 5343 WPI_LOCK(sc); 5344 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 5345 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 5346 WPI_UNLOCK(sc); 5347 WPI_TX_LOCK(sc); 5348 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 5349 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 5350 WPI_TX_UNLOCK(sc); 5351 5352 /* 5353 * Only need to set the channel in Monitor mode. AP scanning and auth 5354 * are already taken care of by their respective firmware commands. 5355 */ 5356 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 5357 WPI_RXON_LOCK(sc); 5358 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 5359 if (IEEE80211_IS_CHAN_2GHZ(c)) { 5360 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 5361 WPI_RXON_24GHZ); 5362 } else { 5363 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 5364 WPI_RXON_24GHZ); 5365 } 5366 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) 5367 device_printf(sc->sc_dev, 5368 "%s: error %d setting channel\n", __func__, 5369 error); 5370 WPI_RXON_UNLOCK(sc); 5371 } 5372} 5373 5374/** 5375 * Called by net80211 to indicate that we need to scan the current 5376 * channel. The channel is previously be set via the wpi_set_channel 5377 * callback. 5378 */ 5379static void 5380wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 5381{ 5382 struct ieee80211vap *vap = ss->ss_vap; 5383 struct ieee80211com *ic = vap->iv_ic; 5384 struct wpi_softc *sc = ic->ic_ifp->if_softc; 5385 int error; 5386 5387 WPI_RXON_LOCK(sc); 5388 if (sc->rxon.chan != ieee80211_chan2ieee(ic, ic->ic_curchan)) { 5389 error = wpi_scan(sc, ic->ic_curchan); 5390 WPI_RXON_UNLOCK(sc); 5391 if (error != 0) 5392 ieee80211_cancel_scan(vap); 5393 } else { 5394 WPI_RXON_UNLOCK(sc); 5395 /* Send probe request when associated. */ 5396 sc->sc_scan_curchan(ss, maxdwell); 5397 } 5398} 5399 5400/** 5401 * Called by the net80211 framework to indicate 5402 * the minimum dwell time has been met, terminate the scan. 5403 * We don't actually terminate the scan as the firmware will notify 5404 * us when it's finished and we have no way to interrupt it. 5405 */ 5406static void 5407wpi_scan_mindwell(struct ieee80211_scan_state *ss) 5408{ 5409 /* NB: don't try to abort scan; wait for firmware to finish */ 5410} 5411 5412static void 5413wpi_hw_reset(void *arg, int pending) 5414{ 5415 struct wpi_softc *sc = arg; 5416 struct ifnet *ifp = sc->sc_ifp; 5417 struct ieee80211com *ic = ifp->if_l2com; 5418 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5419 5420 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5421 5422 if (vap != NULL && (ic->ic_flags & IEEE80211_F_SCAN)) 5423 ieee80211_cancel_scan(vap); 5424 5425 wpi_stop(sc); 5426 if (vap != NULL) 5427 ieee80211_stop(vap); 5428 wpi_init(sc); 5429 if (vap != NULL) 5430 ieee80211_init(vap); 5431} 5432