if_wpi.c revision 280086
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 280086 2015-03-15 20:53:46Z 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 *); 187static void wpi_fatal_intr(struct wpi_softc *); 188static void wpi_intr(void *); 189static int wpi_cmd2(struct wpi_softc *, struct wpi_buf *); 190static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 191 struct ieee80211_node *); 192static int wpi_tx_data_raw(struct wpi_softc *, struct mbuf *, 193 struct ieee80211_node *, 194 const struct ieee80211_bpf_params *); 195static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 196 const struct ieee80211_bpf_params *); 197static void wpi_start(struct ifnet *); 198static void wpi_start_locked(struct ifnet *); 199static void wpi_start_task(void *, int); 200static void wpi_watchdog_rfkill(void *); 201static void wpi_watchdog(void *); 202static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 203static int wpi_cmd(struct wpi_softc *, int, const void *, size_t, int); 204static int wpi_mrr_setup(struct wpi_softc *); 205static int wpi_add_node(struct wpi_softc *, struct ieee80211_node *); 206static int wpi_add_broadcast_node(struct wpi_softc *, int); 207static int wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *); 208static void wpi_del_node(struct wpi_softc *, struct ieee80211_node *); 209static int wpi_updateedca(struct ieee80211com *); 210static void wpi_set_promisc(struct wpi_softc *); 211static void wpi_update_promisc(struct ifnet *); 212static void wpi_update_mcast(struct ifnet *); 213static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 214static int wpi_set_timing(struct wpi_softc *, struct ieee80211_node *); 215static void wpi_power_calibration(struct wpi_softc *); 216static int wpi_set_txpower(struct wpi_softc *, int); 217static int wpi_get_power_index(struct wpi_softc *, 218 struct wpi_power_group *, struct ieee80211_channel *, int); 219static int wpi_set_pslevel(struct wpi_softc *, uint8_t, int, int); 220static int wpi_send_btcoex(struct wpi_softc *); 221static int wpi_send_rxon(struct wpi_softc *, int, int); 222static int wpi_config(struct wpi_softc *); 223static uint16_t wpi_get_active_dwell_time(struct wpi_softc *, 224 struct ieee80211_channel *, uint8_t); 225static uint16_t wpi_limit_dwell(struct wpi_softc *, uint16_t); 226static uint16_t wpi_get_passive_dwell_time(struct wpi_softc *, 227 struct ieee80211_channel *); 228static int wpi_scan(struct wpi_softc *, struct ieee80211_channel *); 229static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 230static int wpi_config_beacon(struct wpi_vap *); 231static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 232static void wpi_update_beacon(struct ieee80211vap *, int); 233static void wpi_newassoc(struct ieee80211_node *, int); 234static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 235static int wpi_key_alloc(struct ieee80211vap *, struct ieee80211_key *, 236 ieee80211_keyix *, ieee80211_keyix *); 237static int wpi_key_set(struct ieee80211vap *, 238 const struct ieee80211_key *, 239 const uint8_t mac[IEEE80211_ADDR_LEN]); 240static int wpi_key_delete(struct ieee80211vap *, 241 const struct ieee80211_key *); 242static int wpi_post_alive(struct wpi_softc *); 243static int wpi_load_bootcode(struct wpi_softc *, const uint8_t *, int); 244static int wpi_load_firmware(struct wpi_softc *); 245static int wpi_read_firmware(struct wpi_softc *); 246static void wpi_unload_firmware(struct wpi_softc *); 247static int wpi_clock_wait(struct wpi_softc *); 248static int wpi_apm_init(struct wpi_softc *); 249static void wpi_apm_stop_master(struct wpi_softc *); 250static void wpi_apm_stop(struct wpi_softc *); 251static void wpi_nic_config(struct wpi_softc *); 252static int wpi_hw_init(struct wpi_softc *); 253static void wpi_hw_stop(struct wpi_softc *); 254static void wpi_radio_on(void *, int); 255static void wpi_radio_off(void *, int); 256static void wpi_init_locked(struct wpi_softc *); 257static void wpi_init(void *); 258static void wpi_stop_locked(struct wpi_softc *); 259static void wpi_stop(struct wpi_softc *); 260static void wpi_scan_start(struct ieee80211com *); 261static void wpi_scan_end(struct ieee80211com *); 262static void wpi_set_channel(struct ieee80211com *); 263static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 264static void wpi_scan_mindwell(struct ieee80211_scan_state *); 265static void wpi_hw_reset(void *, int); 266 267static device_method_t wpi_methods[] = { 268 /* Device interface */ 269 DEVMETHOD(device_probe, wpi_probe), 270 DEVMETHOD(device_attach, wpi_attach), 271 DEVMETHOD(device_detach, wpi_detach), 272 DEVMETHOD(device_shutdown, wpi_shutdown), 273 DEVMETHOD(device_suspend, wpi_suspend), 274 DEVMETHOD(device_resume, wpi_resume), 275 276 DEVMETHOD_END 277}; 278 279static driver_t wpi_driver = { 280 "wpi", 281 wpi_methods, 282 sizeof (struct wpi_softc) 283}; 284static devclass_t wpi_devclass; 285 286DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 287 288MODULE_VERSION(wpi, 1); 289 290MODULE_DEPEND(wpi, pci, 1, 1, 1); 291MODULE_DEPEND(wpi, wlan, 1, 1, 1); 292MODULE_DEPEND(wpi, firmware, 1, 1, 1); 293 294static int 295wpi_probe(device_t dev) 296{ 297 const struct wpi_ident *ident; 298 299 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 300 if (pci_get_vendor(dev) == ident->vendor && 301 pci_get_device(dev) == ident->device) { 302 device_set_desc(dev, ident->name); 303 return (BUS_PROBE_DEFAULT); 304 } 305 } 306 return ENXIO; 307} 308 309static int 310wpi_attach(device_t dev) 311{ 312 struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev); 313 struct ieee80211com *ic; 314 struct ifnet *ifp; 315 int i, error, rid; 316#ifdef WPI_DEBUG 317 int supportsa = 1; 318 const struct wpi_ident *ident; 319#endif 320 uint8_t macaddr[IEEE80211_ADDR_LEN]; 321 322 sc->sc_dev = dev; 323 324#ifdef WPI_DEBUG 325 error = resource_int_value(device_get_name(sc->sc_dev), 326 device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug)); 327 if (error != 0) 328 sc->sc_debug = 0; 329#else 330 sc->sc_debug = 0; 331#endif 332 333 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 334 335 /* 336 * Get the offset of the PCI Express Capability Structure in PCI 337 * Configuration Space. 338 */ 339 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 340 if (error != 0) { 341 device_printf(dev, "PCIe capability structure not found!\n"); 342 return error; 343 } 344 345 /* 346 * Some card's only support 802.11b/g not a, check to see if 347 * this is one such card. A 0x0 in the subdevice table indicates 348 * the entire subdevice range is to be ignored. 349 */ 350#ifdef WPI_DEBUG 351 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 352 if (ident->subdevice && 353 pci_get_subdevice(dev) == ident->subdevice) { 354 supportsa = 0; 355 break; 356 } 357 } 358#endif 359 360 /* Clear device-specific "PCI retry timeout" register (41h). */ 361 pci_write_config(dev, 0x41, 0, 1); 362 363 /* Enable bus-mastering. */ 364 pci_enable_busmaster(dev); 365 366 rid = PCIR_BAR(0); 367 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 368 RF_ACTIVE); 369 if (sc->mem == NULL) { 370 device_printf(dev, "can't map mem space\n"); 371 error = ENOMEM; 372 return error; 373 } 374 sc->sc_st = rman_get_bustag(sc->mem); 375 sc->sc_sh = rman_get_bushandle(sc->mem); 376 377 i = 1; 378 rid = 0; 379 if (pci_alloc_msi(dev, &i) == 0) 380 rid = 1; 381 /* Install interrupt handler. */ 382 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 383 (rid != 0 ? 0 : RF_SHAREABLE)); 384 if (sc->irq == NULL) { 385 device_printf(dev, "can't map interrupt\n"); 386 error = ENOMEM; 387 goto fail; 388 } 389 390 WPI_LOCK_INIT(sc); 391 WPI_NT_LOCK_INIT(sc); 392 WPI_TXQ_LOCK_INIT(sc); 393 394 /* Allocate DMA memory for firmware transfers. */ 395 if ((error = wpi_alloc_fwmem(sc)) != 0) { 396 device_printf(dev, 397 "could not allocate memory for firmware, error %d\n", 398 error); 399 goto fail; 400 } 401 402 /* Allocate shared page. */ 403 if ((error = wpi_alloc_shared(sc)) != 0) { 404 device_printf(dev, "could not allocate shared page\n"); 405 goto fail; 406 } 407 408 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 409 for (i = 0; i < WPI_NTXQUEUES; i++) { 410 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 411 device_printf(dev, 412 "could not allocate TX ring %d, error %d\n", i, 413 error); 414 goto fail; 415 } 416 } 417 418 /* Allocate RX ring. */ 419 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 420 device_printf(dev, "could not allocate RX ring, error %d\n", 421 error); 422 goto fail; 423 } 424 425 /* Clear pending interrupts. */ 426 WPI_WRITE(sc, WPI_INT, 0xffffffff); 427 428 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 429 if (ifp == NULL) { 430 device_printf(dev, "can not allocate ifnet structure\n"); 431 goto fail; 432 } 433 434 ic = ifp->if_l2com; 435 ic->ic_ifp = ifp; 436 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 437 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 438 439 /* Set device capabilities. */ 440 ic->ic_caps = 441 IEEE80211_C_STA /* station mode supported */ 442 | IEEE80211_C_IBSS /* IBSS mode supported */ 443 | IEEE80211_C_MONITOR /* monitor mode supported */ 444 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 445 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 446 | IEEE80211_C_TXPMGT /* tx power management */ 447 | IEEE80211_C_SHSLOT /* short slot time supported */ 448 | IEEE80211_C_WPA /* 802.11i */ 449 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 450#if 0 451 | IEEE80211_C_HOSTAP /* Host access point mode */ 452#endif 453 | IEEE80211_C_WME /* 802.11e */ 454 | IEEE80211_C_PMGT /* Station-side power mgmt */ 455 ; 456 457 ic->ic_cryptocaps = 458 IEEE80211_CRYPTO_AES_CCM; 459 460 /* 461 * Read in the eeprom and also setup the channels for 462 * net80211. We don't set the rates as net80211 does this for us 463 */ 464 if ((error = wpi_read_eeprom(sc, macaddr)) != 0) { 465 device_printf(dev, "could not read EEPROM, error %d\n", 466 error); 467 goto fail; 468 } 469 470#ifdef WPI_DEBUG 471 if (bootverbose) { 472 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", 473 sc->domain); 474 device_printf(sc->sc_dev, "Hardware Type: %c\n", 475 sc->type > 1 ? 'B': '?'); 476 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 477 ((sc->rev & 0xf0) == 0xd0) ? 'D': '?'); 478 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 479 supportsa ? "does" : "does not"); 480 481 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must 482 check what sc->rev really represents - benjsc 20070615 */ 483 } 484#endif 485 486 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 487 ifp->if_softc = sc; 488 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 489 ifp->if_init = wpi_init; 490 ifp->if_ioctl = wpi_ioctl; 491 ifp->if_start = wpi_start; 492 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 493 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 494 IFQ_SET_READY(&ifp->if_snd); 495 496 ieee80211_ifattach(ic, macaddr); 497 ic->ic_vap_create = wpi_vap_create; 498 ic->ic_vap_delete = wpi_vap_delete; 499 ic->ic_raw_xmit = wpi_raw_xmit; 500 ic->ic_node_alloc = wpi_node_alloc; 501 sc->sc_node_free = ic->ic_node_free; 502 ic->ic_node_free = wpi_node_free; 503 ic->ic_wme.wme_update = wpi_updateedca; 504 ic->ic_update_promisc = wpi_update_promisc; 505 ic->ic_update_mcast = wpi_update_mcast; 506 ic->ic_newassoc = wpi_newassoc; 507 ic->ic_scan_start = wpi_scan_start; 508 ic->ic_scan_end = wpi_scan_end; 509 ic->ic_set_channel = wpi_set_channel; 510 sc->sc_scan_curchan = ic->ic_scan_curchan; 511 ic->ic_scan_curchan = wpi_scan_curchan; 512 ic->ic_scan_mindwell = wpi_scan_mindwell; 513 ic->ic_setregdomain = wpi_setregdomain; 514 515 wpi_radiotap_attach(sc); 516 517 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 518 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 519 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 520 TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc); 521 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 522 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 523 TASK_INIT(&sc->sc_start_task, 0, wpi_start_task, sc); 524 525 wpi_sysctlattach(sc); 526 527 /* 528 * Hook our interrupt after all initialization is complete. 529 */ 530 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 531 NULL, wpi_intr, sc, &sc->sc_ih); 532 if (error != 0) { 533 device_printf(dev, "can't establish interrupt, error %d\n", 534 error); 535 goto fail; 536 } 537 538 if (bootverbose) 539 ieee80211_announce(ic); 540 541#ifdef WPI_DEBUG 542 if (sc->sc_debug & WPI_DEBUG_HW) 543 ieee80211_announce_channels(ic); 544#endif 545 546 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 547 return 0; 548 549fail: wpi_detach(dev); 550 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 551 return error; 552} 553 554/* 555 * Attach the interface to 802.11 radiotap. 556 */ 557static void 558wpi_radiotap_attach(struct wpi_softc *sc) 559{ 560 struct ifnet *ifp = sc->sc_ifp; 561 struct ieee80211com *ic = ifp->if_l2com; 562 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 563 ieee80211_radiotap_attach(ic, 564 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 565 WPI_TX_RADIOTAP_PRESENT, 566 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 567 WPI_RX_RADIOTAP_PRESENT); 568 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 569} 570 571static void 572wpi_sysctlattach(struct wpi_softc *sc) 573{ 574#ifdef WPI_DEBUG 575 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 576 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 577 578 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 579 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 580 "control debugging printfs"); 581#endif 582} 583 584static void 585wpi_init_beacon(struct wpi_vap *wvp) 586{ 587 struct wpi_buf *bcn = &wvp->wv_bcbuf; 588 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 589 590 cmd->id = WPI_ID_BROADCAST; 591 cmd->ofdm_mask = 0xff; 592 cmd->cck_mask = 0x0f; 593 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 594 cmd->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 595 596 bcn->code = WPI_CMD_SET_BEACON; 597 bcn->ac = WPI_CMD_QUEUE_NUM; 598 bcn->size = sizeof(struct wpi_cmd_beacon); 599} 600 601static struct ieee80211vap * 602wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 603 enum ieee80211_opmode opmode, int flags, 604 const uint8_t bssid[IEEE80211_ADDR_LEN], 605 const uint8_t mac[IEEE80211_ADDR_LEN]) 606{ 607 struct wpi_vap *wvp; 608 struct ieee80211vap *vap; 609 610 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 611 return NULL; 612 613 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 614 M_80211_VAP, M_NOWAIT | M_ZERO); 615 if (wvp == NULL) 616 return NULL; 617 vap = &wvp->wv_vap; 618 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 619 620 if (opmode == IEEE80211_M_IBSS) { 621 WPI_VAP_LOCK_INIT(wvp); 622 wpi_init_beacon(wvp); 623 } 624 625 /* Override with driver methods. */ 626 vap->iv_key_alloc = wpi_key_alloc; 627 vap->iv_key_set = wpi_key_set; 628 vap->iv_key_delete = wpi_key_delete; 629 wvp->wv_newstate = vap->iv_newstate; 630 vap->iv_newstate = wpi_newstate; 631 vap->iv_update_beacon = wpi_update_beacon; 632 633 ieee80211_ratectl_init(vap); 634 /* Complete setup. */ 635 ieee80211_vap_attach(vap, ieee80211_media_change, 636 ieee80211_media_status); 637 ic->ic_opmode = opmode; 638 return vap; 639} 640 641static void 642wpi_vap_delete(struct ieee80211vap *vap) 643{ 644 struct wpi_vap *wvp = WPI_VAP(vap); 645 struct wpi_buf *bcn = &wvp->wv_bcbuf; 646 enum ieee80211_opmode opmode = vap->iv_opmode; 647 648 ieee80211_ratectl_deinit(vap); 649 ieee80211_vap_detach(vap); 650 651 if (opmode == IEEE80211_M_IBSS) { 652 if (bcn->m != NULL) 653 m_freem(bcn->m); 654 655 WPI_VAP_LOCK_DESTROY(wvp); 656 } 657 658 free(wvp, M_80211_VAP); 659} 660 661static int 662wpi_detach(device_t dev) 663{ 664 struct wpi_softc *sc = device_get_softc(dev); 665 struct ifnet *ifp = sc->sc_ifp; 666 struct ieee80211com *ic; 667 int qid; 668 669 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 670 671 if (ifp != NULL) { 672 ic = ifp->if_l2com; 673 674 ieee80211_draintask(ic, &sc->sc_reinittask); 675 ieee80211_draintask(ic, &sc->sc_radiooff_task); 676 ieee80211_draintask(ic, &sc->sc_radioon_task); 677 ieee80211_draintask(ic, &sc->sc_start_task); 678 679 wpi_stop(sc); 680 681 callout_drain(&sc->watchdog_to); 682 callout_drain(&sc->watchdog_rfkill); 683 callout_drain(&sc->calib_to); 684 ieee80211_ifdetach(ic); 685 } 686 687 /* Uninstall interrupt handler. */ 688 if (sc->irq != NULL) { 689 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 690 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 691 sc->irq); 692 pci_release_msi(dev); 693 } 694 695 if (sc->txq[0].data_dmat) { 696 /* Free DMA resources. */ 697 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 698 wpi_free_tx_ring(sc, &sc->txq[qid]); 699 700 wpi_free_rx_ring(sc); 701 wpi_free_shared(sc); 702 } 703 704 if (sc->fw_dma.tag) 705 wpi_free_fwmem(sc); 706 707 if (sc->mem != NULL) 708 bus_release_resource(dev, SYS_RES_MEMORY, 709 rman_get_rid(sc->mem), sc->mem); 710 711 if (ifp != NULL) 712 if_free(ifp); 713 714 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 715 WPI_TXQ_LOCK_DESTROY(sc); 716 WPI_NT_LOCK_DESTROY(sc); 717 WPI_LOCK_DESTROY(sc); 718 return 0; 719} 720 721static int 722wpi_shutdown(device_t dev) 723{ 724 struct wpi_softc *sc = device_get_softc(dev); 725 726 wpi_stop(sc); 727 return 0; 728} 729 730static int 731wpi_suspend(device_t dev) 732{ 733 struct wpi_softc *sc = device_get_softc(dev); 734 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 735 736 ieee80211_suspend_all(ic); 737 return 0; 738} 739 740static int 741wpi_resume(device_t dev) 742{ 743 struct wpi_softc *sc = device_get_softc(dev); 744 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 745 746 /* Clear device-specific "PCI retry timeout" register (41h). */ 747 pci_write_config(dev, 0x41, 0, 1); 748 749 ieee80211_resume_all(ic); 750 return 0; 751} 752 753/* 754 * Grab exclusive access to NIC memory. 755 */ 756static int 757wpi_nic_lock(struct wpi_softc *sc) 758{ 759 int ntries; 760 761 /* Request exclusive access to NIC. */ 762 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 763 764 /* Spin until we actually get the lock. */ 765 for (ntries = 0; ntries < 1000; ntries++) { 766 if ((WPI_READ(sc, WPI_GP_CNTRL) & 767 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 768 WPI_GP_CNTRL_MAC_ACCESS_ENA) 769 return 0; 770 DELAY(10); 771 } 772 773 device_printf(sc->sc_dev, "could not lock memory\n"); 774 775 return ETIMEDOUT; 776} 777 778/* 779 * Release lock on NIC memory. 780 */ 781static __inline void 782wpi_nic_unlock(struct wpi_softc *sc) 783{ 784 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 785} 786 787static __inline uint32_t 788wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 789{ 790 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 791 WPI_BARRIER_READ_WRITE(sc); 792 return WPI_READ(sc, WPI_PRPH_RDATA); 793} 794 795static __inline void 796wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 797{ 798 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 799 WPI_BARRIER_WRITE(sc); 800 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 801} 802 803static __inline void 804wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 805{ 806 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 807} 808 809static __inline void 810wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 811{ 812 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 813} 814 815static __inline void 816wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 817 const uint32_t *data, int count) 818{ 819 for (; count > 0; count--, data++, addr += 4) 820 wpi_prph_write(sc, addr, *data); 821} 822 823static __inline uint32_t 824wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 825{ 826 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 827 WPI_BARRIER_READ_WRITE(sc); 828 return WPI_READ(sc, WPI_MEM_RDATA); 829} 830 831static __inline void 832wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 833 int count) 834{ 835 for (; count > 0; count--, addr += 4) 836 *data++ = wpi_mem_read(sc, addr); 837} 838 839static int 840wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 841{ 842 uint8_t *out = data; 843 uint32_t val; 844 int error, ntries; 845 846 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 847 848 if ((error = wpi_nic_lock(sc)) != 0) 849 return error; 850 851 for (; count > 0; count -= 2, addr++) { 852 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 853 for (ntries = 0; ntries < 10; ntries++) { 854 val = WPI_READ(sc, WPI_EEPROM); 855 if (val & WPI_EEPROM_READ_VALID) 856 break; 857 DELAY(5); 858 } 859 if (ntries == 10) { 860 device_printf(sc->sc_dev, 861 "timeout reading ROM at 0x%x\n", addr); 862 return ETIMEDOUT; 863 } 864 *out++= val >> 16; 865 if (count > 1) 866 *out ++= val >> 24; 867 } 868 869 wpi_nic_unlock(sc); 870 871 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 872 873 return 0; 874} 875 876static void 877wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 878{ 879 if (error != 0) 880 return; 881 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 882 *(bus_addr_t *)arg = segs[0].ds_addr; 883} 884 885/* 886 * Allocates a contiguous block of dma memory of the requested size and 887 * alignment. 888 */ 889static int 890wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 891 void **kvap, bus_size_t size, bus_size_t alignment) 892{ 893 int error; 894 895 dma->tag = NULL; 896 dma->size = size; 897 898 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 899 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 900 1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag); 901 if (error != 0) 902 goto fail; 903 904 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 905 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 906 if (error != 0) 907 goto fail; 908 909 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 910 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 911 if (error != 0) 912 goto fail; 913 914 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 915 916 if (kvap != NULL) 917 *kvap = dma->vaddr; 918 919 return 0; 920 921fail: wpi_dma_contig_free(dma); 922 return error; 923} 924 925static void 926wpi_dma_contig_free(struct wpi_dma_info *dma) 927{ 928 if (dma->vaddr != NULL) { 929 bus_dmamap_sync(dma->tag, dma->map, 930 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 931 bus_dmamap_unload(dma->tag, dma->map); 932 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 933 dma->vaddr = NULL; 934 } 935 if (dma->tag != NULL) { 936 bus_dma_tag_destroy(dma->tag); 937 dma->tag = NULL; 938 } 939} 940 941/* 942 * Allocate a shared page between host and NIC. 943 */ 944static int 945wpi_alloc_shared(struct wpi_softc *sc) 946{ 947 /* Shared buffer must be aligned on a 4KB boundary. */ 948 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 949 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 950} 951 952static void 953wpi_free_shared(struct wpi_softc *sc) 954{ 955 wpi_dma_contig_free(&sc->shared_dma); 956} 957 958/* 959 * Allocate DMA-safe memory for firmware transfer. 960 */ 961static int 962wpi_alloc_fwmem(struct wpi_softc *sc) 963{ 964 /* Must be aligned on a 16-byte boundary. */ 965 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 966 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 967} 968 969static void 970wpi_free_fwmem(struct wpi_softc *sc) 971{ 972 wpi_dma_contig_free(&sc->fw_dma); 973} 974 975static int 976wpi_alloc_rx_ring(struct wpi_softc *sc) 977{ 978 struct wpi_rx_ring *ring = &sc->rxq; 979 bus_size_t size; 980 int i, error; 981 982 ring->cur = 0; 983 ring->update = 0; 984 985 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 986 987 /* Allocate RX descriptors (16KB aligned.) */ 988 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 989 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 990 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 991 if (error != 0) { 992 device_printf(sc->sc_dev, 993 "%s: could not allocate RX ring DMA memory, error %d\n", 994 __func__, error); 995 goto fail; 996 } 997 998 /* Create RX buffer DMA tag. */ 999 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1000 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1001 MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, 1002 &ring->data_dmat); 1003 if (error != 0) { 1004 device_printf(sc->sc_dev, 1005 "%s: could not create RX buf DMA tag, error %d\n", 1006 __func__, error); 1007 goto fail; 1008 } 1009 1010 /* 1011 * Allocate and map RX buffers. 1012 */ 1013 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1014 struct wpi_rx_data *data = &ring->data[i]; 1015 bus_addr_t paddr; 1016 1017 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1018 if (error != 0) { 1019 device_printf(sc->sc_dev, 1020 "%s: could not create RX buf DMA map, error %d\n", 1021 __func__, error); 1022 goto fail; 1023 } 1024 1025 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1026 if (data->m == NULL) { 1027 device_printf(sc->sc_dev, 1028 "%s: could not allocate RX mbuf\n", __func__); 1029 error = ENOBUFS; 1030 goto fail; 1031 } 1032 1033 error = bus_dmamap_load(ring->data_dmat, data->map, 1034 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1035 &paddr, BUS_DMA_NOWAIT); 1036 if (error != 0 && error != EFBIG) { 1037 device_printf(sc->sc_dev, 1038 "%s: can't map mbuf (error %d)\n", __func__, 1039 error); 1040 goto fail; 1041 } 1042 1043 /* Set physical address of RX buffer. */ 1044 ring->desc[i] = htole32(paddr); 1045 } 1046 1047 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1048 BUS_DMASYNC_PREWRITE); 1049 1050 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1051 1052 return 0; 1053 1054fail: wpi_free_rx_ring(sc); 1055 1056 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1057 1058 return error; 1059} 1060 1061static void 1062wpi_update_rx_ring(struct wpi_softc *sc) 1063{ 1064 struct wpi_rx_ring *ring = &sc->rxq; 1065 1066 if (ring->update != 0) { 1067 /* Wait for INT_WAKEUP event. */ 1068 return; 1069 } 1070 1071 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1072 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1073 __func__); 1074 1075 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1076 ring->update = 1; 1077 } else 1078 WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7); 1079} 1080 1081static void 1082wpi_reset_rx_ring(struct wpi_softc *sc) 1083{ 1084 struct wpi_rx_ring *ring = &sc->rxq; 1085 int ntries; 1086 1087 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1088 1089 if (wpi_nic_lock(sc) == 0) { 1090 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1091 for (ntries = 0; ntries < 1000; ntries++) { 1092 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1093 WPI_FH_RX_STATUS_IDLE) 1094 break; 1095 DELAY(10); 1096 } 1097#ifdef WPI_DEBUG 1098 if (ntries == 1000) { 1099 device_printf(sc->sc_dev, 1100 "timeout resetting Rx ring\n"); 1101 } 1102#endif 1103 wpi_nic_unlock(sc); 1104 } 1105 1106 ring->cur = 0; 1107 ring->update = 0; 1108} 1109 1110static void 1111wpi_free_rx_ring(struct wpi_softc *sc) 1112{ 1113 struct wpi_rx_ring *ring = &sc->rxq; 1114 int i; 1115 1116 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1117 1118 wpi_dma_contig_free(&ring->desc_dma); 1119 1120 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1121 struct wpi_rx_data *data = &ring->data[i]; 1122 1123 if (data->m != NULL) { 1124 bus_dmamap_sync(ring->data_dmat, data->map, 1125 BUS_DMASYNC_POSTREAD); 1126 bus_dmamap_unload(ring->data_dmat, data->map); 1127 m_freem(data->m); 1128 data->m = NULL; 1129 } 1130 if (data->map != NULL) 1131 bus_dmamap_destroy(ring->data_dmat, data->map); 1132 } 1133 if (ring->data_dmat != NULL) { 1134 bus_dma_tag_destroy(ring->data_dmat); 1135 ring->data_dmat = NULL; 1136 } 1137} 1138 1139static int 1140wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid) 1141{ 1142 bus_addr_t paddr; 1143 bus_size_t size; 1144 int i, error; 1145 1146 ring->qid = qid; 1147 ring->queued = 0; 1148 ring->cur = 0; 1149 ring->update = 0; 1150 1151 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1152 1153 /* Allocate TX descriptors (16KB aligned.) */ 1154 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1155 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1156 size, WPI_RING_DMA_ALIGN); 1157 if (error != 0) { 1158 device_printf(sc->sc_dev, 1159 "%s: could not allocate TX ring DMA memory, error %d\n", 1160 __func__, error); 1161 goto fail; 1162 } 1163 1164 /* Update shared area with ring physical address. */ 1165 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1166 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1167 BUS_DMASYNC_PREWRITE); 1168 1169 /* 1170 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need 1171 * to allocate commands space for other rings. 1172 * XXX Do we really need to allocate descriptors for other rings? 1173 */ 1174 if (qid > WPI_CMD_QUEUE_NUM) 1175 return 0; 1176 1177 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1178 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1179 size, 4); 1180 if (error != 0) { 1181 device_printf(sc->sc_dev, 1182 "%s: could not allocate TX cmd DMA memory, error %d\n", 1183 __func__, error); 1184 goto fail; 1185 } 1186 1187 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1188 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1189 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1190 &ring->data_dmat); 1191 if (error != 0) { 1192 device_printf(sc->sc_dev, 1193 "%s: could not create TX buf DMA tag, error %d\n", 1194 __func__, error); 1195 goto fail; 1196 } 1197 1198 paddr = ring->cmd_dma.paddr; 1199 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1200 struct wpi_tx_data *data = &ring->data[i]; 1201 1202 data->cmd_paddr = paddr; 1203 paddr += sizeof (struct wpi_tx_cmd); 1204 1205 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1206 if (error != 0) { 1207 device_printf(sc->sc_dev, 1208 "%s: could not create TX buf DMA map, error %d\n", 1209 __func__, error); 1210 goto fail; 1211 } 1212 } 1213 1214 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1215 1216 return 0; 1217 1218fail: wpi_free_tx_ring(sc, ring); 1219 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1220 return error; 1221} 1222 1223static void 1224wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1225{ 1226 if (ring->update != 0) { 1227 /* Wait for INT_WAKEUP event. */ 1228 return; 1229 } 1230 1231 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1232 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1233 __func__, ring->qid); 1234 1235 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1236 ring->update = 1; 1237 } else 1238 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1239} 1240 1241static void 1242wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1243{ 1244 int i; 1245 1246 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1247 1248 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1249 struct wpi_tx_data *data = &ring->data[i]; 1250 1251 if (data->m != NULL) { 1252 bus_dmamap_sync(ring->data_dmat, data->map, 1253 BUS_DMASYNC_POSTWRITE); 1254 bus_dmamap_unload(ring->data_dmat, data->map); 1255 m_freem(data->m); 1256 data->m = NULL; 1257 } 1258 } 1259 /* Clear TX descriptors. */ 1260 memset(ring->desc, 0, ring->desc_dma.size); 1261 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1262 BUS_DMASYNC_PREWRITE); 1263 sc->qfullmsk &= ~(1 << ring->qid); 1264 ring->queued = 0; 1265 ring->cur = 0; 1266 ring->update = 0; 1267} 1268 1269static void 1270wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1271{ 1272 int i; 1273 1274 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1275 1276 wpi_dma_contig_free(&ring->desc_dma); 1277 wpi_dma_contig_free(&ring->cmd_dma); 1278 1279 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1280 struct wpi_tx_data *data = &ring->data[i]; 1281 1282 if (data->m != NULL) { 1283 bus_dmamap_sync(ring->data_dmat, data->map, 1284 BUS_DMASYNC_POSTWRITE); 1285 bus_dmamap_unload(ring->data_dmat, data->map); 1286 m_freem(data->m); 1287 } 1288 if (data->map != NULL) 1289 bus_dmamap_destroy(ring->data_dmat, data->map); 1290 } 1291 if (ring->data_dmat != NULL) { 1292 bus_dma_tag_destroy(ring->data_dmat); 1293 ring->data_dmat = NULL; 1294 } 1295} 1296 1297/* 1298 * Extract various information from EEPROM. 1299 */ 1300static int 1301wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 1302{ 1303#define WPI_CHK(res) do { \ 1304 if ((error = res) != 0) \ 1305 goto fail; \ 1306} while (0) 1307 int error, i; 1308 1309 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1310 1311 /* Adapter has to be powered on for EEPROM access to work. */ 1312 if ((error = wpi_apm_init(sc)) != 0) { 1313 device_printf(sc->sc_dev, 1314 "%s: could not power ON adapter, error %d\n", __func__, 1315 error); 1316 return error; 1317 } 1318 1319 if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) { 1320 device_printf(sc->sc_dev, "bad EEPROM signature\n"); 1321 error = EIO; 1322 goto fail; 1323 } 1324 /* Clear HW ownership of EEPROM. */ 1325 WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER); 1326 1327 /* Read the hardware capabilities, revision and SKU type. */ 1328 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap, 1329 sizeof(sc->cap))); 1330 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 1331 sizeof(sc->rev))); 1332 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1333 sizeof(sc->type))); 1334 1335 sc->rev = le16toh(sc->rev); 1336 DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, 1337 sc->rev, sc->type); 1338 1339 /* Read the regulatory domain (4 ASCII characters.) */ 1340 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 1341 sizeof(sc->domain))); 1342 1343 /* Read MAC address. */ 1344 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 1345 IEEE80211_ADDR_LEN)); 1346 1347 /* Read the list of authorized channels. */ 1348 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 1349 WPI_CHK(wpi_read_eeprom_channels(sc, i)); 1350 1351 /* Read the list of TX power groups. */ 1352 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 1353 WPI_CHK(wpi_read_eeprom_group(sc, i)); 1354 1355fail: wpi_apm_stop(sc); /* Power OFF adapter. */ 1356 1357 DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 1358 __func__); 1359 1360 return error; 1361#undef WPI_CHK 1362} 1363 1364/* 1365 * Translate EEPROM flags to net80211. 1366 */ 1367static uint32_t 1368wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel) 1369{ 1370 uint32_t nflags; 1371 1372 nflags = 0; 1373 if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0) 1374 nflags |= IEEE80211_CHAN_PASSIVE; 1375 if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0) 1376 nflags |= IEEE80211_CHAN_NOADHOC; 1377 if (channel->flags & WPI_EEPROM_CHAN_RADAR) { 1378 nflags |= IEEE80211_CHAN_DFS; 1379 /* XXX apparently IBSS may still be marked */ 1380 nflags |= IEEE80211_CHAN_NOADHOC; 1381 } 1382 1383 return nflags; 1384} 1385 1386static void 1387wpi_read_eeprom_band(struct wpi_softc *sc, int n) 1388{ 1389 struct ifnet *ifp = sc->sc_ifp; 1390 struct ieee80211com *ic = ifp->if_l2com; 1391 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1392 const struct wpi_chan_band *band = &wpi_bands[n]; 1393 struct ieee80211_channel *c; 1394 uint8_t chan; 1395 int i, nflags; 1396 1397 for (i = 0; i < band->nchan; i++) { 1398 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1399 DPRINTF(sc, WPI_DEBUG_EEPROM, 1400 "Channel Not Valid: %d, band %d\n", 1401 band->chan[i],n); 1402 continue; 1403 } 1404 1405 chan = band->chan[i]; 1406 nflags = wpi_eeprom_channel_flags(&channels[i]); 1407 1408 c = &ic->ic_channels[ic->ic_nchans++]; 1409 c->ic_ieee = chan; 1410 c->ic_maxregpower = channels[i].maxpwr; 1411 c->ic_maxpower = 2*c->ic_maxregpower; 1412 1413 if (n == 0) { /* 2GHz band */ 1414 c->ic_freq = ieee80211_ieee2mhz(chan, 1415 IEEE80211_CHAN_G); 1416 1417 /* G =>'s B is supported */ 1418 c->ic_flags = IEEE80211_CHAN_B | nflags; 1419 c = &ic->ic_channels[ic->ic_nchans++]; 1420 c[0] = c[-1]; 1421 c->ic_flags = IEEE80211_CHAN_G | nflags; 1422 } else { /* 5GHz band */ 1423 c->ic_freq = ieee80211_ieee2mhz(chan, 1424 IEEE80211_CHAN_A); 1425 1426 c->ic_flags = IEEE80211_CHAN_A | nflags; 1427 } 1428 1429 /* Save maximum allowed TX power for this channel. */ 1430 sc->maxpwr[chan] = channels[i].maxpwr; 1431 1432 DPRINTF(sc, WPI_DEBUG_EEPROM, 1433 "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d," 1434 " offset %d\n", chan, c->ic_freq, 1435 channels[i].flags, sc->maxpwr[chan], 1436 IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans); 1437 } 1438} 1439 1440/** 1441 * Read the eeprom to find out what channels are valid for the given 1442 * band and update net80211 with what we find. 1443 */ 1444static int 1445wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 1446{ 1447 struct ifnet *ifp = sc->sc_ifp; 1448 struct ieee80211com *ic = ifp->if_l2com; 1449 const struct wpi_chan_band *band = &wpi_bands[n]; 1450 int error; 1451 1452 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1453 1454 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1455 band->nchan * sizeof (struct wpi_eeprom_chan)); 1456 if (error != 0) { 1457 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1458 return error; 1459 } 1460 1461 wpi_read_eeprom_band(sc, n); 1462 1463 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1464 1465 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1466 1467 return 0; 1468} 1469 1470static struct wpi_eeprom_chan * 1471wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1472{ 1473 int i, j; 1474 1475 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1476 for (i = 0; i < wpi_bands[j].nchan; i++) 1477 if (wpi_bands[j].chan[i] == c->ic_ieee) 1478 return &sc->eeprom_channels[j][i]; 1479 1480 return NULL; 1481} 1482 1483/* 1484 * Enforce flags read from EEPROM. 1485 */ 1486static int 1487wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1488 int nchan, struct ieee80211_channel chans[]) 1489{ 1490 struct ifnet *ifp = ic->ic_ifp; 1491 struct wpi_softc *sc = ifp->if_softc; 1492 int i; 1493 1494 for (i = 0; i < nchan; i++) { 1495 struct ieee80211_channel *c = &chans[i]; 1496 struct wpi_eeprom_chan *channel; 1497 1498 channel = wpi_find_eeprom_channel(sc, c); 1499 if (channel == NULL) { 1500 if_printf(ic->ic_ifp, 1501 "%s: invalid channel %u freq %u/0x%x\n", 1502 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1503 return EINVAL; 1504 } 1505 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1506 } 1507 1508 return 0; 1509} 1510 1511static int 1512wpi_read_eeprom_group(struct wpi_softc *sc, int n) 1513{ 1514 struct wpi_power_group *group = &sc->groups[n]; 1515 struct wpi_eeprom_group rgroup; 1516 int i, error; 1517 1518 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1519 1520 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1521 &rgroup, sizeof rgroup)) != 0) { 1522 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1523 return error; 1524 } 1525 1526 /* Save TX power group information. */ 1527 group->chan = rgroup.chan; 1528 group->maxpwr = rgroup.maxpwr; 1529 /* Retrieve temperature at which the samples were taken. */ 1530 group->temp = (int16_t)le16toh(rgroup.temp); 1531 1532 DPRINTF(sc, WPI_DEBUG_EEPROM, 1533 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1534 group->maxpwr, group->temp); 1535 1536 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1537 group->samples[i].index = rgroup.samples[i].index; 1538 group->samples[i].power = rgroup.samples[i].power; 1539 1540 DPRINTF(sc, WPI_DEBUG_EEPROM, 1541 "\tsample %d: index=%d power=%d\n", i, 1542 group->samples[i].index, group->samples[i].power); 1543 } 1544 1545 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1546 1547 return 0; 1548} 1549 1550static int 1551wpi_add_node_entry_adhoc(struct wpi_softc *sc) 1552{ 1553 int newid = WPI_ID_IBSS_MIN; 1554 1555 for (; newid <= WPI_ID_IBSS_MAX; newid++) { 1556 if ((sc->nodesmsk & (1 << newid)) == 0) { 1557 sc->nodesmsk |= 1 << newid; 1558 return newid; 1559 } 1560 } 1561 1562 return WPI_ID_UNDEFINED; 1563} 1564 1565static __inline int 1566wpi_add_node_entry_sta(struct wpi_softc *sc) 1567{ 1568 sc->nodesmsk |= 1 << WPI_ID_BSS; 1569 1570 return WPI_ID_BSS; 1571} 1572 1573static __inline int 1574wpi_check_node_entry(struct wpi_softc *sc, uint8_t id) 1575{ 1576 if (id == WPI_ID_UNDEFINED) 1577 return 0; 1578 1579 return (sc->nodesmsk >> id) & 1; 1580} 1581 1582static __inline void 1583wpi_clear_node_table(struct wpi_softc *sc) 1584{ 1585 sc->nodesmsk = 0; 1586} 1587 1588static __inline void 1589wpi_del_node_entry(struct wpi_softc *sc, uint8_t id) 1590{ 1591 sc->nodesmsk &= ~(1 << id); 1592} 1593 1594static struct ieee80211_node * 1595wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1596{ 1597 struct wpi_node *wn; 1598 1599 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1600 M_NOWAIT | M_ZERO); 1601 1602 if (wn == NULL) 1603 return NULL; 1604 1605 wn->id = WPI_ID_UNDEFINED; 1606 1607 return &wn->ni; 1608} 1609 1610static void 1611wpi_node_free(struct ieee80211_node *ni) 1612{ 1613 struct ieee80211com *ic = ni->ni_ic; 1614 struct wpi_softc *sc = ic->ic_ifp->if_softc; 1615 struct wpi_node *wn = WPI_NODE(ni); 1616 1617 if (wn->id != WPI_ID_UNDEFINED) { 1618 WPI_NT_LOCK(sc); 1619 if (wpi_check_node_entry(sc, wn->id)) { 1620 wpi_del_node_entry(sc, wn->id); 1621 wpi_del_node(sc, ni); 1622 } 1623 WPI_NT_UNLOCK(sc); 1624 } 1625 1626 sc->sc_node_free(ni); 1627} 1628 1629/** 1630 * Called by net80211 when ever there is a change to 80211 state machine 1631 */ 1632static int 1633wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1634{ 1635 struct wpi_vap *wvp = WPI_VAP(vap); 1636 struct ieee80211com *ic = vap->iv_ic; 1637 struct ifnet *ifp = ic->ic_ifp; 1638 struct wpi_softc *sc = ifp->if_softc; 1639 int error = 0; 1640 1641 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1642 1643 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1644 ieee80211_state_name[vap->iv_state], 1645 ieee80211_state_name[nstate]); 1646 1647 IEEE80211_UNLOCK(ic); 1648 WPI_LOCK(sc); 1649 switch (nstate) { 1650 case IEEE80211_S_SCAN: 1651 if ((vap->iv_opmode == IEEE80211_M_IBSS || 1652 vap->iv_opmode == IEEE80211_M_AHDEMO) && 1653 (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 1654 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1655 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1656 device_printf(sc->sc_dev, 1657 "%s: could not send RXON\n", __func__); 1658 } 1659 } 1660 break; 1661 1662 case IEEE80211_S_ASSOC: 1663 if (vap->iv_state != IEEE80211_S_RUN) 1664 break; 1665 /* FALLTHROUGH */ 1666 case IEEE80211_S_AUTH: 1667 /* 1668 * The node must be registered in the firmware before auth. 1669 * Also the associd must be cleared on RUN -> ASSOC 1670 * transitions. 1671 */ 1672 if ((error = wpi_auth(sc, vap)) != 0) { 1673 device_printf(sc->sc_dev, 1674 "%s: could not move to AUTH state, error %d\n", 1675 __func__, error); 1676 } 1677 break; 1678 1679 case IEEE80211_S_RUN: 1680 /* 1681 * RUN -> RUN transition; Just restart the timers. 1682 */ 1683 if (vap->iv_state == IEEE80211_S_RUN) { 1684 wpi_calib_timeout(sc); 1685 break; 1686 } 1687 1688 /* 1689 * !RUN -> RUN requires setting the association id 1690 * which is done with a firmware cmd. We also defer 1691 * starting the timers until that work is done. 1692 */ 1693 if ((error = wpi_run(sc, vap)) != 0) { 1694 device_printf(sc->sc_dev, 1695 "%s: could not move to RUN state\n", __func__); 1696 } 1697 break; 1698 1699 default: 1700 break; 1701 } 1702 WPI_UNLOCK(sc); 1703 IEEE80211_LOCK(ic); 1704 if (error != 0) { 1705 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1706 return error; 1707 } 1708 1709 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1710 1711 return wvp->wv_newstate(vap, nstate, arg); 1712} 1713 1714static void 1715wpi_calib_timeout(void *arg) 1716{ 1717 struct wpi_softc *sc = arg; 1718 struct ifnet *ifp = sc->sc_ifp; 1719 struct ieee80211com *ic = ifp->if_l2com; 1720 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1721 1722 if (vap->iv_state != IEEE80211_S_RUN) 1723 return; 1724 1725 wpi_power_calibration(sc); 1726 1727 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1728} 1729 1730static __inline uint8_t 1731rate2plcp(const uint8_t rate) 1732{ 1733 switch (rate) { 1734 case 12: return 0xd; 1735 case 18: return 0xf; 1736 case 24: return 0x5; 1737 case 36: return 0x7; 1738 case 48: return 0x9; 1739 case 72: return 0xb; 1740 case 96: return 0x1; 1741 case 108: return 0x3; 1742 case 2: return 10; 1743 case 4: return 20; 1744 case 11: return 55; 1745 case 22: return 110; 1746 default: return 0; 1747 } 1748} 1749 1750static __inline uint8_t 1751plcp2rate(const uint8_t plcp) 1752{ 1753 switch (plcp) { 1754 case 0xd: return 12; 1755 case 0xf: return 18; 1756 case 0x5: return 24; 1757 case 0x7: return 36; 1758 case 0x9: return 48; 1759 case 0xb: return 72; 1760 case 0x1: return 96; 1761 case 0x3: return 108; 1762 case 10: return 2; 1763 case 20: return 4; 1764 case 55: return 11; 1765 case 110: return 22; 1766 default: return 0; 1767 } 1768} 1769 1770/* Quickly determine if a given rate is CCK or OFDM. */ 1771#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1772 1773static void 1774wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1775 struct wpi_rx_data *data) 1776{ 1777 struct ifnet *ifp = sc->sc_ifp; 1778 const struct ieee80211_cipher *cip = NULL; 1779 struct ieee80211com *ic = ifp->if_l2com; 1780 struct wpi_rx_ring *ring = &sc->rxq; 1781 struct wpi_rx_stat *stat; 1782 struct wpi_rx_head *head; 1783 struct wpi_rx_tail *tail; 1784 struct ieee80211_frame *wh; 1785 struct ieee80211_node *ni; 1786 struct mbuf *m, *m1; 1787 bus_addr_t paddr; 1788 uint32_t flags; 1789 uint16_t len; 1790 int error; 1791 1792 stat = (struct wpi_rx_stat *)(desc + 1); 1793 1794 if (stat->len > WPI_STAT_MAXLEN) { 1795 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1796 goto fail1; 1797 } 1798 1799 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1800 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1801 len = le16toh(head->len); 1802 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1803 flags = le32toh(tail->flags); 1804 1805 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1806 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1807 le32toh(desc->len), len, (int8_t)stat->rssi, 1808 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1809 1810 /* Discard frames with a bad FCS early. */ 1811 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1812 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1813 __func__, flags); 1814 goto fail1; 1815 } 1816 /* Discard frames that are too short. */ 1817 if (len < sizeof (*wh)) { 1818 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1819 __func__, len); 1820 goto fail1; 1821 } 1822 1823 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1824 if (m1 == NULL) { 1825 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1826 __func__); 1827 goto fail1; 1828 } 1829 bus_dmamap_unload(ring->data_dmat, data->map); 1830 1831 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1832 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1833 if (error != 0 && error != EFBIG) { 1834 device_printf(sc->sc_dev, 1835 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1836 m_freem(m1); 1837 1838 /* Try to reload the old mbuf. */ 1839 error = bus_dmamap_load(ring->data_dmat, data->map, 1840 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1841 &paddr, BUS_DMA_NOWAIT); 1842 if (error != 0 && error != EFBIG) { 1843 panic("%s: could not load old RX mbuf", __func__); 1844 } 1845 /* Physical address may have changed. */ 1846 ring->desc[ring->cur] = htole32(paddr); 1847 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1848 BUS_DMASYNC_PREWRITE); 1849 goto fail1; 1850 } 1851 1852 m = data->m; 1853 data->m = m1; 1854 /* Update RX descriptor. */ 1855 ring->desc[ring->cur] = htole32(paddr); 1856 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1857 BUS_DMASYNC_PREWRITE); 1858 1859 /* Finalize mbuf. */ 1860 m->m_pkthdr.rcvif = ifp; 1861 m->m_data = (caddr_t)(head + 1); 1862 m->m_pkthdr.len = m->m_len = len; 1863 1864 /* Grab a reference to the source node. */ 1865 wh = mtod(m, struct ieee80211_frame *); 1866 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1867 1868 if (ni != NULL) 1869 cip = ni->ni_ucastkey.wk_cipher; 1870 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 1871 !IEEE80211_IS_MULTICAST(wh->i_addr1) && 1872 cip != NULL && cip->ic_cipher == IEEE80211_CIPHER_AES_CCM) { 1873 if ((flags & WPI_RX_CIPHER_MASK) != WPI_RX_CIPHER_CCMP) 1874 goto fail2; 1875 1876 /* Check whether decryption was successful or not. */ 1877 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 1878 DPRINTF(sc, WPI_DEBUG_RECV, 1879 "CCMP decryption failed 0x%x\n", flags); 1880 goto fail2; 1881 } 1882 m->m_flags |= M_WEP; 1883 } 1884 1885 if (ieee80211_radiotap_active(ic)) { 1886 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1887 1888 tap->wr_flags = 0; 1889 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 1890 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1891 tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET); 1892 tap->wr_dbm_antnoise = WPI_RSSI_OFFSET; 1893 tap->wr_tsft = tail->tstamp; 1894 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1895 tap->wr_rate = plcp2rate(head->plcp); 1896 } 1897 1898 WPI_UNLOCK(sc); 1899 1900 /* Send the frame to the 802.11 layer. */ 1901 if (ni != NULL) { 1902 (void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET); 1903 /* Node is no longer needed. */ 1904 ieee80211_free_node(ni); 1905 } else 1906 (void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET); 1907 1908 WPI_LOCK(sc); 1909 1910 return; 1911 1912fail2: ieee80211_free_node(ni); 1913 m_freem(m); 1914 1915fail1: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1916} 1917 1918static void 1919wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1920 struct wpi_rx_data *data) 1921{ 1922 /* Ignore */ 1923} 1924 1925static void 1926wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1927{ 1928 struct ifnet *ifp = sc->sc_ifp; 1929 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1930 struct wpi_tx_data *data = &ring->data[desc->idx]; 1931 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1932 struct mbuf *m; 1933 struct ieee80211_node *ni; 1934 struct ieee80211vap *vap; 1935 struct ieee80211com *ic; 1936 int ackfailcnt = stat->ackfailcnt / 2; /* wpi_mrr_setup() */ 1937 int status = le32toh(stat->status); 1938 1939 KASSERT(data->ni != NULL, ("no node")); 1940 1941 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1942 1943 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 1944 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 1945 "status %x\n", __func__, desc->qid, desc->idx, ackfailcnt, 1946 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 1947 1948 /* Unmap and free mbuf. */ 1949 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1950 bus_dmamap_unload(ring->data_dmat, data->map); 1951 m = data->m, data->m = NULL; 1952 ni = data->ni, data->ni = NULL; 1953 vap = ni->ni_vap; 1954 ic = vap->iv_ic; 1955 1956 /* 1957 * Update rate control statistics for the node. 1958 */ 1959 WPI_UNLOCK(sc); 1960 if ((status & 0xff) != 1) { 1961 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1962 ieee80211_ratectl_tx_complete(vap, ni, 1963 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 1964 } else { 1965 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1966 ieee80211_ratectl_tx_complete(vap, ni, 1967 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 1968 } 1969 1970 ieee80211_tx_complete(ni, m, (status & 0xff) != 1); 1971 WPI_LOCK(sc); 1972 1973 sc->sc_tx_timer = 0; 1974 if (--ring->queued < WPI_TX_RING_LOMARK) { 1975 sc->qfullmsk &= ~(1 << ring->qid); 1976 if (sc->qfullmsk == 0 && 1977 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 1978 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1979 ieee80211_runtask(ic, &sc->sc_start_task); 1980 } 1981 } 1982 1983 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1984} 1985 1986/* 1987 * Process a "command done" firmware notification. This is where we wakeup 1988 * processes waiting for a synchronous command completion. 1989 */ 1990static void 1991wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1992{ 1993 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 1994 struct wpi_tx_data *data; 1995 1996 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid=%x idx=%d flags=%x " 1997 "type=%s len=%d\n", desc->qid, desc->idx, 1998 desc->flags, wpi_cmd_str(desc->type), 1999 le32toh(desc->len)); 2000 2001 if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM) 2002 return; /* Not a command ack. */ 2003 2004 KASSERT(ring->queued == 0, ("ring->queued must be 0")); 2005 2006 data = &ring->data[desc->idx]; 2007 2008 /* If the command was mapped in an mbuf, free it. */ 2009 if (data->m != NULL) { 2010 bus_dmamap_sync(ring->data_dmat, data->map, 2011 BUS_DMASYNC_POSTWRITE); 2012 bus_dmamap_unload(ring->data_dmat, data->map); 2013 m_freem(data->m); 2014 data->m = NULL; 2015 } 2016 2017 wakeup(&ring->cmd[desc->idx]); 2018} 2019 2020static void 2021wpi_notif_intr(struct wpi_softc *sc) 2022{ 2023 struct ifnet *ifp = sc->sc_ifp; 2024 struct ieee80211com *ic = ifp->if_l2com; 2025 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2026 int hw; 2027 2028 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 2029 BUS_DMASYNC_POSTREAD); 2030 2031 hw = le32toh(sc->shared->next); 2032 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 2033 2034 while (sc->rxq.cur != hw) { 2035 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 2036 2037 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 2038 struct wpi_rx_desc *desc; 2039 2040 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2041 BUS_DMASYNC_POSTREAD); 2042 desc = mtod(data->m, struct wpi_rx_desc *); 2043 2044 DPRINTF(sc, WPI_DEBUG_NOTIFY, 2045 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 2046 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 2047 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 2048 2049 if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) { 2050 /* Reply to a command. */ 2051 wpi_cmd_done(sc, desc); 2052 } 2053 2054 switch (desc->type) { 2055 case WPI_RX_DONE: 2056 /* An 802.11 frame has been received. */ 2057 wpi_rx_done(sc, desc, data); 2058 2059 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2060 /* wpi_stop() was called. */ 2061 return; 2062 } 2063 2064 break; 2065 2066 case WPI_TX_DONE: 2067 /* An 802.11 frame has been transmitted. */ 2068 wpi_tx_done(sc, desc); 2069 break; 2070 2071 case WPI_RX_STATISTICS: 2072 case WPI_BEACON_STATISTICS: 2073 wpi_rx_statistics(sc, desc, data); 2074 break; 2075 2076 case WPI_BEACON_MISSED: 2077 { 2078 struct wpi_beacon_missed *miss = 2079 (struct wpi_beacon_missed *)(desc + 1); 2080 int misses; 2081 2082 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2083 BUS_DMASYNC_POSTREAD); 2084 misses = le32toh(miss->consecutive); 2085 2086 DPRINTF(sc, WPI_DEBUG_STATE, 2087 "%s: beacons missed %d/%d\n", __func__, misses, 2088 le32toh(miss->total)); 2089 2090 if (vap->iv_state == IEEE80211_S_RUN && 2091 (ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2092 if (misses >= vap->iv_bmissthreshold) { 2093 WPI_UNLOCK(sc); 2094 ieee80211_beacon_miss(ic); 2095 WPI_LOCK(sc); 2096 } 2097 } 2098 break; 2099 } 2100 case WPI_UC_READY: 2101 { 2102 struct wpi_ucode_info *uc = 2103 (struct wpi_ucode_info *)(desc + 1); 2104 2105 /* The microcontroller is ready. */ 2106 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2107 BUS_DMASYNC_POSTREAD); 2108 DPRINTF(sc, WPI_DEBUG_RESET, 2109 "microcode alive notification version=%d.%d " 2110 "subtype=%x alive=%x\n", uc->major, uc->minor, 2111 uc->subtype, le32toh(uc->valid)); 2112 2113 if (le32toh(uc->valid) != 1) { 2114 device_printf(sc->sc_dev, 2115 "microcontroller initialization failed\n"); 2116 wpi_stop_locked(sc); 2117 } 2118 /* Save the address of the error log in SRAM. */ 2119 sc->errptr = le32toh(uc->errptr); 2120 break; 2121 } 2122 case WPI_STATE_CHANGED: 2123 { 2124 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2125 BUS_DMASYNC_POSTREAD); 2126 2127 uint32_t *status = (uint32_t *)(desc + 1); 2128 2129 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2130 le32toh(*status)); 2131 2132 if (le32toh(*status) & 1) { 2133 WPI_NT_LOCK(sc); 2134 wpi_clear_node_table(sc); 2135 WPI_NT_UNLOCK(sc); 2136 ieee80211_runtask(ic, &sc->sc_radiooff_task); 2137 return; 2138 } 2139 break; 2140 } 2141 case WPI_START_SCAN: 2142 { 2143 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2144 BUS_DMASYNC_POSTREAD); 2145#ifdef WPI_DEBUG 2146 struct wpi_start_scan *scan = 2147 (struct wpi_start_scan *)(desc + 1); 2148 DPRINTF(sc, WPI_DEBUG_SCAN, 2149 "%s: scanning channel %d status %x\n", 2150 __func__, scan->chan, le32toh(scan->status)); 2151#endif 2152 break; 2153 } 2154 case WPI_STOP_SCAN: 2155 { 2156 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2157 BUS_DMASYNC_POSTREAD); 2158#ifdef WPI_DEBUG 2159 struct wpi_stop_scan *scan = 2160 (struct wpi_stop_scan *)(desc + 1); 2161 DPRINTF(sc, WPI_DEBUG_SCAN, 2162 "scan finished nchan=%d status=%d chan=%d\n", 2163 scan->nchan, scan->status, scan->chan); 2164#endif 2165 sc->sc_scan_timer = 0; 2166 WPI_UNLOCK(sc); 2167 ieee80211_scan_next(vap); 2168 WPI_LOCK(sc); 2169 break; 2170 } 2171 } 2172 } 2173 2174 /* Tell the firmware what we have processed. */ 2175 wpi_update_rx_ring(sc); 2176} 2177 2178/* 2179 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2180 * from power-down sleep mode. 2181 */ 2182static void 2183wpi_wakeup_intr(struct wpi_softc *sc) 2184{ 2185 int qid; 2186 2187 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2188 "%s: ucode wakeup from power-down sleep\n", __func__); 2189 2190 /* Wakeup RX and TX rings. */ 2191 if (sc->rxq.update) { 2192 sc->rxq.update = 0; 2193 wpi_update_rx_ring(sc); 2194 } 2195 WPI_TXQ_LOCK(sc); 2196 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) { 2197 struct wpi_tx_ring *ring = &sc->txq[qid]; 2198 2199 if (ring->update) { 2200 ring->update = 0; 2201 wpi_update_tx_ring(sc, ring); 2202 } 2203 } 2204 WPI_TXQ_UNLOCK(sc); 2205 2206 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2207} 2208 2209/* 2210 * Dump the error log of the firmware when a firmware panic occurs. Although 2211 * we can't debug the firmware because it is neither open source nor free, it 2212 * can help us to identify certain classes of problems. 2213 */ 2214static void 2215wpi_fatal_intr(struct wpi_softc *sc) 2216{ 2217 struct wpi_fw_dump dump; 2218 uint32_t i, offset, count; 2219 const uint32_t size_errmsg = 2220 (sizeof (wpi_fw_errmsg) / sizeof ((wpi_fw_errmsg)[0])); 2221 2222 /* Check that the error log address is valid. */ 2223 if (sc->errptr < WPI_FW_DATA_BASE || 2224 sc->errptr + sizeof (dump) > 2225 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2226 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2227 sc->errptr); 2228 return; 2229 } 2230 if (wpi_nic_lock(sc) != 0) { 2231 printf("%s: could not read firmware error log\n", __func__); 2232 return; 2233 } 2234 /* Read number of entries in the log. */ 2235 count = wpi_mem_read(sc, sc->errptr); 2236 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2237 printf("%s: invalid count field (count = %u)\n", __func__, 2238 count); 2239 wpi_nic_unlock(sc); 2240 return; 2241 } 2242 /* Skip "count" field. */ 2243 offset = sc->errptr + sizeof (uint32_t); 2244 printf("firmware error log (count = %u):\n", count); 2245 for (i = 0; i < count; i++) { 2246 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2247 sizeof (dump) / sizeof (uint32_t)); 2248 2249 printf(" error type = \"%s\" (0x%08X)\n", 2250 (dump.desc < size_errmsg) ? 2251 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2252 dump.desc); 2253 printf(" error data = 0x%08X\n", 2254 dump.data); 2255 printf(" branch link = 0x%08X%08X\n", 2256 dump.blink[0], dump.blink[1]); 2257 printf(" interrupt link = 0x%08X%08X\n", 2258 dump.ilink[0], dump.ilink[1]); 2259 printf(" time = %u\n", dump.time); 2260 2261 offset += sizeof (dump); 2262 } 2263 wpi_nic_unlock(sc); 2264 /* Dump driver status (TX and RX rings) while we're here. */ 2265 printf("driver status:\n"); 2266 WPI_TXQ_LOCK(sc); 2267 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 2268 struct wpi_tx_ring *ring = &sc->txq[i]; 2269 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2270 i, ring->qid, ring->cur, ring->queued); 2271 } 2272 WPI_TXQ_UNLOCK(sc); 2273 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2274} 2275 2276static void 2277wpi_intr(void *arg) 2278{ 2279 struct wpi_softc *sc = arg; 2280 struct ifnet *ifp = sc->sc_ifp; 2281 uint32_t r1, r2; 2282 2283 WPI_LOCK(sc); 2284 2285 /* Disable interrupts. */ 2286 WPI_WRITE(sc, WPI_INT_MASK, 0); 2287 2288 r1 = WPI_READ(sc, WPI_INT); 2289 2290 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) 2291 goto end; /* Hardware gone! */ 2292 2293 r2 = WPI_READ(sc, WPI_FH_INT); 2294 2295 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2296 r1, r2); 2297 2298 if (r1 == 0 && r2 == 0) 2299 goto done; /* Interrupt not for us. */ 2300 2301 /* Acknowledge interrupts. */ 2302 WPI_WRITE(sc, WPI_INT, r1); 2303 WPI_WRITE(sc, WPI_FH_INT, r2); 2304 2305 if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) { 2306 struct ieee80211com *ic = ifp->if_l2com; 2307 2308 device_printf(sc->sc_dev, "fatal firmware error\n"); 2309 wpi_fatal_intr(sc); 2310 DPRINTF(sc, WPI_DEBUG_HW, 2311 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2312 "(Hardware Error)"); 2313 ieee80211_runtask(ic, &sc->sc_reinittask); 2314 goto end; 2315 } 2316 2317 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2318 (r2 & WPI_FH_INT_RX)) 2319 wpi_notif_intr(sc); 2320 2321 if (r1 & WPI_INT_ALIVE) 2322 wakeup(sc); /* Firmware is alive. */ 2323 2324 if (r1 & WPI_INT_WAKEUP) 2325 wpi_wakeup_intr(sc); 2326 2327done: 2328 /* Re-enable interrupts. */ 2329 if (ifp->if_flags & IFF_UP) 2330 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2331 2332end: WPI_UNLOCK(sc); 2333} 2334 2335static int 2336wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2337{ 2338 struct ieee80211_frame *wh; 2339 struct wpi_tx_cmd *cmd; 2340 struct wpi_tx_data *data; 2341 struct wpi_tx_desc *desc; 2342 struct wpi_tx_ring *ring; 2343 struct mbuf *m1; 2344 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2345 int error, i, hdrlen, nsegs, totlen, pad; 2346 2347 WPI_TXQ_LOCK(sc); 2348 2349 KASSERT(buf->size <= sizeof(buf->data), ("buffer overflow")); 2350 2351 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2352 2353 if (sc->txq_active == 0) { 2354 /* wpi_stop() was called */ 2355 error = ENETDOWN; 2356 goto fail; 2357 } 2358 2359 wh = mtod(buf->m, struct ieee80211_frame *); 2360 hdrlen = ieee80211_anyhdrsize(wh); 2361 totlen = buf->m->m_pkthdr.len; 2362 2363 if (hdrlen & 3) { 2364 /* First segment length must be a multiple of 4. */ 2365 pad = 4 - (hdrlen & 3); 2366 } else 2367 pad = 0; 2368 2369 ring = &sc->txq[buf->ac]; 2370 desc = &ring->desc[ring->cur]; 2371 data = &ring->data[ring->cur]; 2372 2373 /* Prepare TX firmware command. */ 2374 cmd = &ring->cmd[ring->cur]; 2375 cmd->code = buf->code; 2376 cmd->flags = 0; 2377 cmd->qid = ring->qid; 2378 cmd->idx = ring->cur; 2379 2380 memcpy(cmd->data, buf->data, buf->size); 2381 2382 /* Save and trim IEEE802.11 header. */ 2383 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen); 2384 m_adj(buf->m, hdrlen); 2385 2386 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2387 segs, &nsegs, BUS_DMA_NOWAIT); 2388 if (error != 0 && error != EFBIG) { 2389 device_printf(sc->sc_dev, 2390 "%s: can't map mbuf (error %d)\n", __func__, error); 2391 goto fail; 2392 } 2393 if (error != 0) { 2394 /* Too many DMA segments, linearize mbuf. */ 2395 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1); 2396 if (m1 == NULL) { 2397 device_printf(sc->sc_dev, 2398 "%s: could not defrag mbuf\n", __func__); 2399 error = ENOBUFS; 2400 goto fail; 2401 } 2402 buf->m = m1; 2403 2404 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2405 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2406 if (error != 0) { 2407 device_printf(sc->sc_dev, 2408 "%s: can't map mbuf (error %d)\n", __func__, 2409 error); 2410 goto fail; 2411 } 2412 } 2413 2414 KASSERT(nsegs < WPI_MAX_SCATTER, 2415 ("too many DMA segments, nsegs (%d) should be less than %d", 2416 nsegs, WPI_MAX_SCATTER)); 2417 2418 data->m = buf->m; 2419 data->ni = buf->ni; 2420 2421 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2422 __func__, ring->qid, ring->cur, totlen, nsegs); 2423 2424 /* Fill TX descriptor. */ 2425 desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs); 2426 /* First DMA segment is used by the TX command. */ 2427 desc->segs[0].addr = htole32(data->cmd_paddr); 2428 desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad); 2429 /* Other DMA segments are for data payload. */ 2430 seg = &segs[0]; 2431 for (i = 1; i <= nsegs; i++) { 2432 desc->segs[i].addr = htole32(seg->ds_addr); 2433 desc->segs[i].len = htole32(seg->ds_len); 2434 seg++; 2435 } 2436 2437 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2438 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2439 BUS_DMASYNC_PREWRITE); 2440 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2441 BUS_DMASYNC_PREWRITE); 2442 2443 /* Kick TX ring. */ 2444 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2445 wpi_update_tx_ring(sc, ring); 2446 2447 if (ring->qid < WPI_CMD_QUEUE_NUM) { 2448 /* Mark TX ring as full if we reach a certain threshold. */ 2449 if (++ring->queued > WPI_TX_RING_HIMARK) 2450 sc->qfullmsk |= 1 << ring->qid; 2451 2452 sc->sc_tx_timer = 5; 2453 } 2454 2455 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2456 2457 WPI_TXQ_UNLOCK(sc); 2458 2459 return 0; 2460 2461fail: m_freem(buf->m); 2462 2463 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2464 2465 WPI_TXQ_UNLOCK(sc); 2466 2467 return error; 2468} 2469 2470/* 2471 * Construct the data packet for a transmit buffer. 2472 */ 2473static int 2474wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2475{ 2476 const struct ieee80211_txparam *tp; 2477 struct ieee80211vap *vap = ni->ni_vap; 2478 struct ieee80211com *ic = ni->ni_ic; 2479 struct wpi_node *wn = WPI_NODE(ni); 2480 struct ieee80211_channel *chan; 2481 struct ieee80211_frame *wh; 2482 struct ieee80211_key *k = NULL; 2483 struct wpi_buf tx_data; 2484 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2485 uint32_t flags; 2486 uint16_t qos; 2487 uint8_t tid, type; 2488 int ac, error, swcrypt, rate, ismcast, totlen; 2489 2490 wh = mtod(m, struct ieee80211_frame *); 2491 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2492 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2493 2494 /* Select EDCA Access Category and TX ring for this frame. */ 2495 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2496 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2497 tid = qos & IEEE80211_QOS_TID; 2498 } else { 2499 qos = 0; 2500 tid = 0; 2501 } 2502 ac = M_WME_GETAC(m); 2503 2504 chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ? 2505 ni->ni_chan : ic->ic_curchan; 2506 tp = &vap->iv_txparms[ieee80211_chan2mode(chan)]; 2507 2508 /* Choose a TX rate index. */ 2509 if (type == IEEE80211_FC0_TYPE_MGT) 2510 rate = tp->mgmtrate; 2511 else if (ismcast) 2512 rate = tp->mcastrate; 2513 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2514 rate = tp->ucastrate; 2515 else if (m->m_flags & M_EAPOL) 2516 rate = tp->mgmtrate; 2517 else { 2518 /* XXX pass pktlen */ 2519 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2520 rate = ni->ni_txrate; 2521 } 2522 2523 /* Encrypt the frame if need be. */ 2524 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2525 /* Retrieve key for TX. */ 2526 k = ieee80211_crypto_encap(ni, m); 2527 if (k == NULL) { 2528 error = ENOBUFS; 2529 goto fail; 2530 } 2531 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2532 2533 /* 802.11 header may have moved. */ 2534 wh = mtod(m, struct ieee80211_frame *); 2535 } 2536 totlen = m->m_pkthdr.len; 2537 2538 if (ieee80211_radiotap_active_vap(vap)) { 2539 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2540 2541 tap->wt_flags = 0; 2542 tap->wt_rate = rate; 2543 if (k != NULL) 2544 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2545 2546 ieee80211_radiotap_tx(vap, m); 2547 } 2548 2549 flags = 0; 2550 if (!ismcast) { 2551 /* Unicast frame, check if an ACK is expected. */ 2552 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2553 IEEE80211_QOS_ACKPOLICY_NOACK) 2554 flags |= WPI_TX_NEED_ACK; 2555 } 2556 2557 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2558 flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */ 2559 2560 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2561 if (!ismcast) { 2562 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2563 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2564 flags |= WPI_TX_NEED_RTS; 2565 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2566 WPI_RATE_IS_OFDM(rate)) { 2567 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2568 flags |= WPI_TX_NEED_CTS; 2569 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2570 flags |= WPI_TX_NEED_RTS; 2571 } 2572 2573 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2574 flags |= WPI_TX_FULL_TXOP; 2575 } 2576 2577 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2578 if (type == IEEE80211_FC0_TYPE_MGT) { 2579 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2580 2581 /* Tell HW to set timestamp in probe responses. */ 2582 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2583 flags |= WPI_TX_INSERT_TSTAMP; 2584 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2585 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2586 tx->timeout = htole16(3); 2587 else 2588 tx->timeout = htole16(2); 2589 } 2590 2591 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2592 tx->id = WPI_ID_BROADCAST; 2593 else { 2594 if (wn->id == WPI_ID_UNDEFINED) { 2595 device_printf(sc->sc_dev, 2596 "%s: undefined node id\n", __func__); 2597 error = EINVAL; 2598 goto fail; 2599 } 2600 2601 tx->id = wn->id; 2602 } 2603 2604 if (type != IEEE80211_FC0_TYPE_MGT) 2605 tx->data_ntries = tp->maxretry; 2606 2607 if (k != NULL && !swcrypt) { 2608 switch (k->wk_cipher->ic_cipher) { 2609 case IEEE80211_CIPHER_AES_CCM: 2610 tx->security = WPI_CIPHER_CCMP; 2611 break; 2612 2613 default: 2614 break; 2615 } 2616 2617 memcpy(tx->key, k->wk_key, k->wk_keylen); 2618 } 2619 2620 tx->len = htole16(totlen); 2621 tx->flags = htole32(flags); 2622 tx->plcp = rate2plcp(rate); 2623 tx->tid = tid; 2624 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2625 tx->ofdm_mask = 0xff; 2626 tx->cck_mask = 0x0f; 2627 tx->rts_ntries = 7; 2628 2629 tx_data.ni = ni; 2630 tx_data.m = m; 2631 tx_data.size = sizeof(struct wpi_cmd_data); 2632 tx_data.code = WPI_CMD_TX_DATA; 2633 tx_data.ac = ac; 2634 2635 return wpi_cmd2(sc, &tx_data); 2636 2637fail: m_freem(m); 2638 return error; 2639} 2640 2641static int 2642wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, 2643 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 2644{ 2645 struct ieee80211vap *vap = ni->ni_vap; 2646 struct ieee80211_frame *wh; 2647 struct wpi_buf tx_data; 2648 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2649 uint32_t flags; 2650 uint8_t type; 2651 int ac, rate, totlen; 2652 2653 wh = mtod(m, struct ieee80211_frame *); 2654 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2655 totlen = m->m_pkthdr.len; 2656 2657 ac = params->ibp_pri & 3; 2658 2659 /* Choose a TX rate index. */ 2660 rate = params->ibp_rate0; 2661 2662 flags = 0; 2663 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2664 flags |= WPI_TX_NEED_ACK; 2665 if (params->ibp_flags & IEEE80211_BPF_RTS) 2666 flags |= WPI_TX_NEED_RTS; 2667 if (params->ibp_flags & IEEE80211_BPF_CTS) 2668 flags |= WPI_TX_NEED_CTS; 2669 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2670 flags |= WPI_TX_FULL_TXOP; 2671 2672 if (ieee80211_radiotap_active_vap(vap)) { 2673 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2674 2675 tap->wt_flags = 0; 2676 tap->wt_rate = rate; 2677 2678 ieee80211_radiotap_tx(vap, m); 2679 } 2680 2681 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2682 if (type == IEEE80211_FC0_TYPE_MGT) { 2683 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2684 2685 /* Tell HW to set timestamp in probe responses. */ 2686 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2687 flags |= WPI_TX_INSERT_TSTAMP; 2688 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2689 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2690 tx->timeout = htole16(3); 2691 else 2692 tx->timeout = htole16(2); 2693 } 2694 2695 tx->len = htole16(totlen); 2696 tx->flags = htole32(flags); 2697 tx->plcp = rate2plcp(rate); 2698 tx->id = WPI_ID_BROADCAST; 2699 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2700 tx->rts_ntries = params->ibp_try1; 2701 tx->data_ntries = params->ibp_try0; 2702 2703 tx_data.ni = ni; 2704 tx_data.m = m; 2705 tx_data.size = sizeof(struct wpi_cmd_data); 2706 tx_data.code = WPI_CMD_TX_DATA; 2707 tx_data.ac = ac; 2708 2709 return wpi_cmd2(sc, &tx_data); 2710} 2711 2712static int 2713wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2714 const struct ieee80211_bpf_params *params) 2715{ 2716 struct ieee80211com *ic = ni->ni_ic; 2717 struct ifnet *ifp = ic->ic_ifp; 2718 struct wpi_softc *sc = ifp->if_softc; 2719 int error = 0; 2720 2721 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2722 2723 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2724 ieee80211_free_node(ni); 2725 m_freem(m); 2726 return ENETDOWN; 2727 } 2728 2729 WPI_LOCK(sc); 2730 if (params == NULL) { 2731 /* 2732 * Legacy path; interpret frame contents to decide 2733 * precisely how to send the frame. 2734 */ 2735 error = wpi_tx_data(sc, m, ni); 2736 } else { 2737 /* 2738 * Caller supplied explicit parameters to use in 2739 * sending the frame. 2740 */ 2741 error = wpi_tx_data_raw(sc, m, ni, params); 2742 } 2743 WPI_UNLOCK(sc); 2744 2745 if (error != 0) { 2746 /* NB: m is reclaimed on tx failure */ 2747 ieee80211_free_node(ni); 2748 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2749 2750 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2751 2752 return error; 2753 } 2754 2755 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2756 2757 return 0; 2758} 2759 2760/** 2761 * Process data waiting to be sent on the IFNET output queue 2762 */ 2763static void 2764wpi_start(struct ifnet *ifp) 2765{ 2766 struct wpi_softc *sc = ifp->if_softc; 2767 2768 WPI_LOCK(sc); 2769 wpi_start_locked(ifp); 2770 WPI_UNLOCK(sc); 2771} 2772 2773static void 2774wpi_start_locked(struct ifnet *ifp) 2775{ 2776 struct wpi_softc *sc = ifp->if_softc; 2777 struct ieee80211_node *ni; 2778 struct mbuf *m; 2779 2780 WPI_LOCK_ASSERT(sc); 2781 2782 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 2783 2784 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2785 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) 2786 return; 2787 2788 for (;;) { 2789 if (sc->qfullmsk != 0) { 2790 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2791 break; 2792 } 2793 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2794 if (m == NULL) 2795 break; 2796 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 2797 if (wpi_tx_data(sc, m, ni) != 0) { 2798 WPI_UNLOCK(sc); 2799 ieee80211_free_node(ni); 2800 WPI_LOCK(sc); 2801 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2802 } 2803 } 2804 2805 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 2806} 2807 2808static void 2809wpi_start_task(void *arg0, int pending) 2810{ 2811 struct wpi_softc *sc = arg0; 2812 struct ifnet *ifp = sc->sc_ifp; 2813 2814 wpi_start(ifp); 2815} 2816 2817static void 2818wpi_watchdog_rfkill(void *arg) 2819{ 2820 struct wpi_softc *sc = arg; 2821 struct ifnet *ifp = sc->sc_ifp; 2822 struct ieee80211com *ic = ifp->if_l2com; 2823 2824 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n"); 2825 2826 /* No need to lock firmware memory. */ 2827 if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) { 2828 /* Radio kill switch is still off. */ 2829 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 2830 sc); 2831 } else 2832 ieee80211_runtask(ic, &sc->sc_radioon_task); 2833} 2834 2835/** 2836 * Called every second, wpi_watchdog used by the watch dog timer 2837 * to check that the card is still alive 2838 */ 2839static void 2840wpi_watchdog(void *arg) 2841{ 2842 struct wpi_softc *sc = arg; 2843 struct ifnet *ifp = sc->sc_ifp; 2844 struct ieee80211com *ic = ifp->if_l2com; 2845 2846 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "Watchdog: tick\n"); 2847 2848 if (sc->sc_tx_timer > 0) { 2849 if (--sc->sc_tx_timer == 0) { 2850 if_printf(ifp, "device timeout\n"); 2851 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2852 ieee80211_runtask(ic, &sc->sc_reinittask); 2853 } 2854 } 2855 2856 if (sc->sc_scan_timer > 0) { 2857 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2858 if (--sc->sc_scan_timer == 0 && vap != NULL) { 2859 if_printf(ifp, "scan timeout\n"); 2860 ieee80211_cancel_scan(vap); 2861 ieee80211_runtask(ic, &sc->sc_reinittask); 2862 } 2863 } 2864 2865 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2866 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2867} 2868 2869static int 2870wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2871{ 2872 struct wpi_softc *sc = ifp->if_softc; 2873 struct ieee80211com *ic = ifp->if_l2com; 2874 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2875 struct ifreq *ifr = (struct ifreq *) data; 2876 int error = 0, startall = 0, stop = 0; 2877 2878 switch (cmd) { 2879 case SIOCGIFADDR: 2880 error = ether_ioctl(ifp, cmd, data); 2881 break; 2882 case SIOCSIFFLAGS: 2883 WPI_LOCK(sc); 2884 if (ifp->if_flags & IFF_UP) { 2885 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2886 wpi_init_locked(sc); 2887 if (WPI_READ(sc, WPI_GP_CNTRL) & 2888 WPI_GP_CNTRL_RFKILL) 2889 startall = 1; 2890 else 2891 stop = 1; 2892 } 2893 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2894 wpi_stop_locked(sc); 2895 WPI_UNLOCK(sc); 2896 if (startall) 2897 ieee80211_start_all(ic); 2898 else if (vap != NULL && stop) 2899 ieee80211_stop(vap); 2900 break; 2901 case SIOCGIFMEDIA: 2902 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2903 break; 2904 default: 2905 error = EINVAL; 2906 break; 2907 } 2908 return error; 2909} 2910 2911/* 2912 * Send a command to the firmware. 2913 */ 2914static int 2915wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size, 2916 int async) 2917{ 2918 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 2919 struct wpi_tx_desc *desc; 2920 struct wpi_tx_data *data; 2921 struct wpi_tx_cmd *cmd; 2922 struct mbuf *m; 2923 bus_addr_t paddr; 2924 int totlen, error; 2925 2926 WPI_TXQ_LOCK(sc); 2927 2928 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2929 2930 if (sc->txq_active == 0) { 2931 /* wpi_stop() was called */ 2932 error = 0; 2933 goto fail; 2934 } 2935 2936 if (async == 0) 2937 WPI_LOCK_ASSERT(sc); 2938 2939 DPRINTF(sc, WPI_DEBUG_CMD, "wpi_cmd %s size %zu async %d\n", 2940 wpi_cmd_str(code), size, async); 2941 2942 desc = &ring->desc[ring->cur]; 2943 data = &ring->data[ring->cur]; 2944 totlen = 4 + size; 2945 2946 if (size > sizeof cmd->data) { 2947 /* Command is too large to fit in a descriptor. */ 2948 if (totlen > MCLBYTES) { 2949 error = EINVAL; 2950 goto fail; 2951 } 2952 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 2953 if (m == NULL) { 2954 error = ENOMEM; 2955 goto fail; 2956 } 2957 cmd = mtod(m, struct wpi_tx_cmd *); 2958 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 2959 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 2960 if (error != 0) { 2961 m_freem(m); 2962 goto fail; 2963 } 2964 data->m = m; 2965 } else { 2966 cmd = &ring->cmd[ring->cur]; 2967 paddr = data->cmd_paddr; 2968 } 2969 2970 cmd->code = code; 2971 cmd->flags = 0; 2972 cmd->qid = ring->qid; 2973 cmd->idx = ring->cur; 2974 memcpy(cmd->data, buf, size); 2975 2976 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 2977 desc->segs[0].addr = htole32(paddr); 2978 desc->segs[0].len = htole32(totlen); 2979 2980 if (size > sizeof cmd->data) { 2981 bus_dmamap_sync(ring->data_dmat, data->map, 2982 BUS_DMASYNC_PREWRITE); 2983 } else { 2984 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2985 BUS_DMASYNC_PREWRITE); 2986 } 2987 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2988 BUS_DMASYNC_PREWRITE); 2989 2990 /* Kick command ring. */ 2991 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2992 wpi_update_tx_ring(sc, ring); 2993 2994 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2995 2996 WPI_TXQ_UNLOCK(sc); 2997 2998 if (async) 2999 return 0; 3000 3001 return mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 3002 3003fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3004 3005 WPI_TXQ_UNLOCK(sc); 3006 3007 return error; 3008} 3009 3010/* 3011 * Configure HW multi-rate retries. 3012 */ 3013static int 3014wpi_mrr_setup(struct wpi_softc *sc) 3015{ 3016 struct ifnet *ifp = sc->sc_ifp; 3017 struct ieee80211com *ic = ifp->if_l2com; 3018 struct wpi_mrr_setup mrr; 3019 int i, error; 3020 3021 /* CCK rates (not used with 802.11a). */ 3022 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 3023 mrr.rates[i].flags = 0; 3024 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3025 /* Fallback to the immediate lower CCK rate (if any.) */ 3026 mrr.rates[i].next = 3027 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 3028 /* Try one time at this rate before falling back to "next". */ 3029 mrr.rates[i].ntries = 1; 3030 } 3031 /* OFDM rates (not used with 802.11b). */ 3032 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 3033 mrr.rates[i].flags = 0; 3034 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3035 /* Fallback to the immediate lower rate (if any.) */ 3036 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 3037 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 3038 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 3039 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 3040 i - 1; 3041 /* Try one time at this rate before falling back to "next". */ 3042 mrr.rates[i].ntries = 1; 3043 } 3044 /* Setup MRR for control frames. */ 3045 mrr.which = htole32(WPI_MRR_CTL); 3046 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3047 if (error != 0) { 3048 device_printf(sc->sc_dev, 3049 "could not setup MRR for control frames\n"); 3050 return error; 3051 } 3052 /* Setup MRR for data frames. */ 3053 mrr.which = htole32(WPI_MRR_DATA); 3054 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3055 if (error != 0) { 3056 device_printf(sc->sc_dev, 3057 "could not setup MRR for data frames\n"); 3058 return error; 3059 } 3060 return 0; 3061} 3062 3063static int 3064wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3065{ 3066 struct ieee80211com *ic = ni->ni_ic; 3067 struct wpi_node *wn = WPI_NODE(ni); 3068 struct wpi_node_info node; 3069 3070 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3071 3072 if (wn->id == WPI_ID_UNDEFINED) 3073 return EINVAL; 3074 3075 memset(&node, 0, sizeof node); 3076 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3077 node.id = wn->id; 3078 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3079 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3080 node.action = htole32(WPI_ACTION_SET_RATE); 3081 node.antenna = WPI_ANTENNA_BOTH; 3082 3083 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 3084} 3085 3086/* 3087 * Broadcast node is used to send group-addressed and management frames. 3088 */ 3089static int 3090wpi_add_broadcast_node(struct wpi_softc *sc, int async) 3091{ 3092 struct ifnet *ifp = sc->sc_ifp; 3093 struct ieee80211com *ic = ifp->if_l2com; 3094 struct wpi_node_info node; 3095 3096 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3097 3098 memset(&node, 0, sizeof node); 3099 IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr); 3100 node.id = WPI_ID_BROADCAST; 3101 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3102 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3103 node.action = htole32(WPI_ACTION_SET_RATE); 3104 node.antenna = WPI_ANTENNA_BOTH; 3105 3106 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 3107} 3108 3109static int 3110wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3111{ 3112 struct wpi_node *wn = WPI_NODE(ni); 3113 int error; 3114 3115 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3116 3117 wn->id = wpi_add_node_entry_sta(sc); 3118 3119 if ((error = wpi_add_node(sc, ni)) != 0) { 3120 wpi_del_node_entry(sc, wn->id); 3121 wn->id = WPI_ID_UNDEFINED; 3122 return error; 3123 } 3124 3125 return 0; 3126} 3127 3128static int 3129wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3130{ 3131 struct wpi_node *wn = WPI_NODE(ni); 3132 int error; 3133 3134 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3135 3136 if (wn->id != WPI_ID_UNDEFINED) 3137 return EINVAL; 3138 3139 if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) { 3140 device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__); 3141 return ENOMEM; 3142 } 3143 3144 if ((error = wpi_add_node(sc, ni)) != 0) { 3145 wpi_del_node_entry(sc, wn->id); 3146 wn->id = WPI_ID_UNDEFINED; 3147 return error; 3148 } 3149 3150 return 0; 3151} 3152 3153static void 3154wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3155{ 3156 struct wpi_node *wn = WPI_NODE(ni); 3157 struct wpi_cmd_del_node node; 3158 int error; 3159 3160 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3161 3162 if (wn->id == WPI_ID_UNDEFINED) { 3163 device_printf(sc->sc_dev, "%s: undefined node id passed\n", 3164 __func__); 3165 return; 3166 } 3167 3168 memset(&node, 0, sizeof node); 3169 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3170 node.count = 1; 3171 3172 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3173 if (error != 0) { 3174 device_printf(sc->sc_dev, 3175 "%s: could not delete node %u, error %d\n", __func__, 3176 wn->id, error); 3177 } 3178} 3179 3180static int 3181wpi_updateedca(struct ieee80211com *ic) 3182{ 3183#define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3184 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3185 struct wpi_edca_params cmd; 3186 int aci, error; 3187 3188 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3189 3190 memset(&cmd, 0, sizeof cmd); 3191 cmd.flags = htole32(WPI_EDCA_UPDATE); 3192 for (aci = 0; aci < WME_NUM_AC; aci++) { 3193 const struct wmeParams *ac = 3194 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 3195 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3196 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3197 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3198 cmd.ac[aci].txoplimit = 3199 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3200 3201 DPRINTF(sc, WPI_DEBUG_EDCA, 3202 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3203 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3204 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3205 cmd.ac[aci].txoplimit); 3206 } 3207 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3208 3209 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3210 3211 return error; 3212#undef WPI_EXP2 3213} 3214 3215static void 3216wpi_set_promisc(struct wpi_softc *sc) 3217{ 3218 struct ifnet *ifp = sc->sc_ifp; 3219 uint32_t promisc_filter; 3220 3221 promisc_filter = WPI_FILTER_PROMISC | WPI_FILTER_CTL; 3222 3223 if (ifp->if_flags & IFF_PROMISC) 3224 sc->rxon.filter |= htole32(promisc_filter); 3225 else 3226 sc->rxon.filter &= ~htole32(promisc_filter); 3227} 3228 3229static void 3230wpi_update_promisc(struct ifnet *ifp) 3231{ 3232 struct wpi_softc *sc = ifp->if_softc; 3233 3234 WPI_LOCK(sc); 3235 wpi_set_promisc(sc); 3236 3237 if (wpi_send_rxon(sc, 1, 1) != 0) { 3238 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3239 __func__); 3240 } 3241 WPI_UNLOCK(sc); 3242} 3243 3244static void 3245wpi_update_mcast(struct ifnet *ifp) 3246{ 3247 /* Ignore */ 3248} 3249 3250static void 3251wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3252{ 3253 struct wpi_cmd_led led; 3254 3255 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3256 3257 led.which = which; 3258 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3259 led.off = off; 3260 led.on = on; 3261 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3262} 3263 3264static int 3265wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3266{ 3267 struct wpi_cmd_timing cmd; 3268 uint64_t val, mod; 3269 3270 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3271 3272 memset(&cmd, 0, sizeof cmd); 3273 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3274 cmd.bintval = htole16(ni->ni_intval); 3275 cmd.lintval = htole16(10); 3276 3277 /* Compute remaining time until next beacon. */ 3278 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3279 mod = le64toh(cmd.tstamp) % val; 3280 cmd.binitval = htole32((uint32_t)(val - mod)); 3281 3282 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3283 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3284 3285 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3286} 3287 3288/* 3289 * This function is called periodically (every 60 seconds) to adjust output 3290 * power to temperature changes. 3291 */ 3292static void 3293wpi_power_calibration(struct wpi_softc *sc) 3294{ 3295 int temp; 3296 3297 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3298 3299 /* Update sensor data. */ 3300 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3301 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3302 3303 /* Sanity-check read value. */ 3304 if (temp < -260 || temp > 25) { 3305 /* This can't be correct, ignore. */ 3306 DPRINTF(sc, WPI_DEBUG_TEMP, 3307 "out-of-range temperature reported: %d\n", temp); 3308 return; 3309 } 3310 3311 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3312 3313 /* Adjust Tx power if need be. */ 3314 if (abs(temp - sc->temp) <= 6) 3315 return; 3316 3317 sc->temp = temp; 3318 3319 if (wpi_set_txpower(sc, 1) != 0) { 3320 /* just warn, too bad for the automatic calibration... */ 3321 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3322 } 3323} 3324 3325/* 3326 * Set TX power for current channel. 3327 */ 3328static int 3329wpi_set_txpower(struct wpi_softc *sc, int async) 3330{ 3331 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3332 struct ieee80211_channel *ch; 3333 struct wpi_power_group *group; 3334 struct wpi_cmd_txpower cmd; 3335 uint8_t chan; 3336 int idx, i; 3337 3338 /* Retrieve current channel from last RXON. */ 3339 chan = sc->rxon.chan; 3340 ch = &ic->ic_channels[chan]; 3341 3342 /* Find the TX power group to which this channel belongs. */ 3343 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3344 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3345 if (chan <= group->chan) 3346 break; 3347 } else 3348 group = &sc->groups[0]; 3349 3350 memset(&cmd, 0, sizeof cmd); 3351 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1; 3352 cmd.chan = htole16(chan); 3353 3354 /* Set TX power for all OFDM and CCK rates. */ 3355 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3356 /* Retrieve TX power for this channel/rate. */ 3357 idx = wpi_get_power_index(sc, group, ch, i); 3358 3359 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3360 3361 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3362 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3363 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3364 } else { 3365 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3366 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3367 } 3368 DPRINTF(sc, WPI_DEBUG_TEMP, 3369 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3370 } 3371 3372 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3373} 3374 3375/* 3376 * Determine Tx power index for a given channel/rate combination. 3377 * This takes into account the regulatory information from EEPROM and the 3378 * current temperature. 3379 */ 3380static int 3381wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3382 struct ieee80211_channel *c, int ridx) 3383{ 3384/* Fixed-point arithmetic division using a n-bit fractional part. */ 3385#define fdivround(a, b, n) \ 3386 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3387 3388/* Linear interpolation. */ 3389#define interpolate(x, x1, y1, x2, y2, n) \ 3390 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3391 3392 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3393 struct wpi_power_sample *sample; 3394 int pwr, idx; 3395 u_int chan; 3396 3397 /* Get channel number. */ 3398 chan = ieee80211_chan2ieee(ic, c); 3399 3400 /* Default TX power is group maximum TX power minus 3dB. */ 3401 pwr = group->maxpwr / 2; 3402 3403 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3404 switch (ridx) { 3405 case WPI_RIDX_OFDM36: 3406 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3407 break; 3408 case WPI_RIDX_OFDM48: 3409 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3410 break; 3411 case WPI_RIDX_OFDM54: 3412 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3413 break; 3414 } 3415 3416 /* Never exceed the channel maximum allowed TX power. */ 3417 pwr = min(pwr, sc->maxpwr[chan]); 3418 3419 /* Retrieve TX power index into gain tables from samples. */ 3420 for (sample = group->samples; sample < &group->samples[3]; sample++) 3421 if (pwr > sample[1].power) 3422 break; 3423 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3424 idx = interpolate(pwr, sample[0].power, sample[0].index, 3425 sample[1].power, sample[1].index, 19); 3426 3427 /*- 3428 * Adjust power index based on current temperature: 3429 * - if cooler than factory-calibrated: decrease output power 3430 * - if warmer than factory-calibrated: increase output power 3431 */ 3432 idx -= (sc->temp - group->temp) * 11 / 100; 3433 3434 /* Decrease TX power for CCK rates (-5dB). */ 3435 if (ridx >= WPI_RIDX_CCK1) 3436 idx += 10; 3437 3438 /* Make sure idx stays in a valid range. */ 3439 if (idx < 0) 3440 return 0; 3441 if (idx > WPI_MAX_PWR_INDEX) 3442 return WPI_MAX_PWR_INDEX; 3443 return idx; 3444 3445#undef interpolate 3446#undef fdivround 3447} 3448 3449/* 3450 * Set STA mode power saving level (between 0 and 5). 3451 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3452 */ 3453static int 3454wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3455{ 3456 struct wpi_pmgt_cmd cmd; 3457 const struct wpi_pmgt *pmgt; 3458 uint32_t max, skip_dtim; 3459 uint32_t reg; 3460 int i; 3461 3462 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3463 "%s: dtim=%d, level=%d, async=%d\n", 3464 __func__, dtim, level, async); 3465 3466 /* Select which PS parameters to use. */ 3467 if (dtim <= 10) 3468 pmgt = &wpi_pmgt[0][level]; 3469 else 3470 pmgt = &wpi_pmgt[1][level]; 3471 3472 memset(&cmd, 0, sizeof cmd); 3473 if (level != 0) /* not CAM */ 3474 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3475 /* Retrieve PCIe Active State Power Management (ASPM). */ 3476 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 3477 if (!(reg & 0x1)) /* L0s Entry disabled. */ 3478 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3479 3480 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3481 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3482 3483 if (dtim == 0) { 3484 dtim = 1; 3485 skip_dtim = 0; 3486 } else 3487 skip_dtim = pmgt->skip_dtim; 3488 3489 if (skip_dtim != 0) { 3490 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3491 max = pmgt->intval[4]; 3492 if (max == (uint32_t)-1) 3493 max = dtim * (skip_dtim + 1); 3494 else if (max > dtim) 3495 max = (max / dtim) * dtim; 3496 } else 3497 max = dtim; 3498 3499 for (i = 0; i < 5; i++) 3500 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3501 3502 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3503} 3504 3505static int 3506wpi_send_btcoex(struct wpi_softc *sc) 3507{ 3508 struct wpi_bluetooth cmd; 3509 3510 memset(&cmd, 0, sizeof cmd); 3511 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3512 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3513 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3514 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3515 __func__); 3516 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3517} 3518 3519static int 3520wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3521{ 3522 int error; 3523 3524 if (assoc && (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3525 struct wpi_assoc rxon_assoc; 3526 3527 rxon_assoc.flags = sc->rxon.flags; 3528 rxon_assoc.filter = sc->rxon.filter; 3529 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3530 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3531 rxon_assoc.reserved = 0; 3532 3533 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3534 sizeof (struct wpi_assoc), async); 3535 } else { 3536 if (async) 3537 WPI_NT_LOCK(sc); 3538 3539 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3540 sizeof (struct wpi_rxon), async); 3541 3542 wpi_clear_node_table(sc); 3543 3544 if (async) 3545 WPI_NT_UNLOCK(sc); 3546 } 3547 if (error != 0) { 3548 device_printf(sc->sc_dev, "RXON command failed, error %d\n", 3549 error); 3550 return error; 3551 } 3552 3553 /* Configuration has changed, set Tx power accordingly. */ 3554 if ((error = wpi_set_txpower(sc, async)) != 0) { 3555 device_printf(sc->sc_dev, 3556 "%s: could not set TX power, error %d\n", __func__, error); 3557 return error; 3558 } 3559 3560 if (!(sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3561 /* Add broadcast node. */ 3562 error = wpi_add_broadcast_node(sc, async); 3563 if (error != 0) { 3564 device_printf(sc->sc_dev, 3565 "could not add broadcast node, error %d\n", error); 3566 return error; 3567 } 3568 } 3569 3570 return 0; 3571} 3572 3573/** 3574 * Configure the card to listen to a particular channel, this transisions the 3575 * card in to being able to receive frames from remote devices. 3576 */ 3577static int 3578wpi_config(struct wpi_softc *sc) 3579{ 3580 struct ifnet *ifp = sc->sc_ifp; 3581 struct ieee80211com *ic = ifp->if_l2com; 3582 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3583 uint32_t flags; 3584 int error; 3585 3586 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3587 3588 /* Set power saving level to CAM during initialization. */ 3589 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3590 device_printf(sc->sc_dev, 3591 "%s: could not set power saving level\n", __func__); 3592 return error; 3593 } 3594 3595 /* Configure bluetooth coexistence. */ 3596 if ((error = wpi_send_btcoex(sc)) != 0) { 3597 device_printf(sc->sc_dev, 3598 "could not configure bluetooth coexistence\n"); 3599 return error; 3600 } 3601 3602 /* Configure adapter. */ 3603 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3604 IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr); 3605 3606 /* Set default channel. */ 3607 sc->rxon.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3608 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3609 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 3610 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3611 3612 sc->rxon.filter = WPI_FILTER_MULTICAST; 3613 switch (ic->ic_opmode) { 3614 case IEEE80211_M_STA: 3615 sc->rxon.mode = WPI_MODE_STA; 3616 break; 3617 case IEEE80211_M_IBSS: 3618 sc->rxon.mode = WPI_MODE_IBSS; 3619 sc->rxon.filter |= WPI_FILTER_BEACON; 3620 break; 3621 /* XXX workaround for passive channels selection */ 3622 case IEEE80211_M_AHDEMO: 3623 case IEEE80211_M_HOSTAP: 3624 sc->rxon.mode = WPI_MODE_HOSTAP; 3625 break; 3626 case IEEE80211_M_MONITOR: 3627 sc->rxon.mode = WPI_MODE_MONITOR; 3628 break; 3629 default: 3630 device_printf(sc->sc_dev, "unknown opmode %d\n", 3631 ic->ic_opmode); 3632 return EINVAL; 3633 } 3634 sc->rxon.filter = htole32(sc->rxon.filter); 3635 wpi_set_promisc(sc); 3636 sc->rxon.cck_mask = 0x0f; /* not yet negotiated */ 3637 sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */ 3638 3639 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) { 3640 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3641 __func__); 3642 return error; 3643 } 3644 3645 /* Setup rate scalling. */ 3646 if ((error = wpi_mrr_setup(sc)) != 0) { 3647 device_printf(sc->sc_dev, "could not setup MRR, error %d\n", 3648 error); 3649 return error; 3650 } 3651 3652 /* Disable beacon notifications (unused). */ 3653 flags = WPI_STATISTICS_BEACON_DISABLE; 3654 error = wpi_cmd(sc, WPI_CMD_GET_STATISTICS, &flags, sizeof flags, 1); 3655 if (error != 0) { 3656 device_printf(sc->sc_dev, 3657 "could not disable beacon statistics, error %d\n", error); 3658 return error; 3659 } 3660 3661 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3662 3663 return 0; 3664} 3665 3666static uint16_t 3667wpi_get_active_dwell_time(struct wpi_softc *sc, 3668 struct ieee80211_channel *c, uint8_t n_probes) 3669{ 3670 /* No channel? Default to 2GHz settings. */ 3671 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) { 3672 return (WPI_ACTIVE_DWELL_TIME_2GHZ + 3673 WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1)); 3674 } 3675 3676 /* 5GHz dwell time. */ 3677 return (WPI_ACTIVE_DWELL_TIME_5GHZ + 3678 WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1)); 3679} 3680 3681/* 3682 * Limit the total dwell time to 85% of the beacon interval. 3683 * 3684 * Returns the dwell time in milliseconds. 3685 */ 3686static uint16_t 3687wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time) 3688{ 3689 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3690 struct ieee80211vap *vap = NULL; 3691 int bintval = 0; 3692 3693 /* bintval is in TU (1.024mS) */ 3694 if (! TAILQ_EMPTY(&ic->ic_vaps)) { 3695 vap = TAILQ_FIRST(&ic->ic_vaps); 3696 bintval = vap->iv_bss->ni_intval; 3697 } 3698 3699 /* 3700 * If it's non-zero, we should calculate the minimum of 3701 * it and the DWELL_BASE. 3702 * 3703 * XXX Yes, the math should take into account that bintval 3704 * is 1.024mS, not 1mS.. 3705 */ 3706 if (bintval > 0) { 3707 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 3708 bintval); 3709 return (MIN(WPI_PASSIVE_DWELL_BASE, ((bintval * 85) / 100))); 3710 } 3711 3712 /* No association context? Default. */ 3713 return (WPI_PASSIVE_DWELL_BASE); 3714} 3715 3716static uint16_t 3717wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 3718{ 3719 uint16_t passive; 3720 3721 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 3722 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 3723 else 3724 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 3725 3726 /* Clamp to the beacon interval if we're associated. */ 3727 return (wpi_limit_dwell(sc, passive)); 3728} 3729 3730/* 3731 * Send a scan request to the firmware. 3732 */ 3733static int 3734wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 3735{ 3736 struct ifnet *ifp = sc->sc_ifp; 3737 struct ieee80211com *ic = ifp->if_l2com; 3738 struct ieee80211_scan_state *ss = ic->ic_scan; 3739 struct ieee80211vap *vap = ss->ss_vap; 3740 struct wpi_scan_hdr *hdr; 3741 struct wpi_cmd_data *tx; 3742 struct wpi_scan_essid *essids; 3743 struct wpi_scan_chan *chan; 3744 struct ieee80211_frame *wh; 3745 struct ieee80211_rateset *rs; 3746 uint16_t dwell_active, dwell_passive; 3747 uint8_t *buf, *frm; 3748 int buflen, error, i, nssid; 3749 3750 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3751 3752 /* 3753 * We are absolutely not allowed to send a scan command when another 3754 * scan command is pending. 3755 */ 3756 if (sc->sc_scan_timer) { 3757 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 3758 __func__); 3759 3760 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3761 3762 return (EAGAIN); 3763 } 3764 3765 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 3766 if (buf == NULL) { 3767 device_printf(sc->sc_dev, 3768 "%s: could not allocate buffer for scan command\n", 3769 __func__); 3770 error = ENOMEM; 3771 goto fail; 3772 } 3773 hdr = (struct wpi_scan_hdr *)buf; 3774 3775 /* 3776 * Move to the next channel if no packets are received within 10 msecs 3777 * after sending the probe request. 3778 */ 3779 hdr->quiet_time = htole16(10); /* timeout in milliseconds */ 3780 hdr->quiet_threshold = htole16(1); /* min # of packets */ 3781 /* 3782 * Max needs to be greater than active and passive and quiet! 3783 * It's also in microseconds! 3784 */ 3785 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 3786 hdr->pause_svc = htole32((4 << 24) | 3787 (100 * IEEE80211_DUR_TU)); /* Hardcode for now */ 3788 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 3789 3790 tx = (struct wpi_cmd_data *)(hdr + 1); 3791 tx->flags = htole32(WPI_TX_AUTO_SEQ); 3792 tx->id = WPI_ID_BROADCAST; 3793 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 3794 3795 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3796 /* Send probe requests at 6Mbps. */ 3797 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 3798 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 3799 } else { 3800 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 3801 /* Send probe requests at 1Mbps. */ 3802 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3803 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 3804 } 3805 3806 essids = (struct wpi_scan_essid *)(tx + 1); 3807 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 3808 for (i = 0; i < nssid; i++) { 3809 essids[i].id = IEEE80211_ELEMID_SSID; 3810 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 3811 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 3812#ifdef WPI_DEBUG 3813 if (sc->sc_debug & WPI_DEBUG_SCAN) { 3814 printf("Scanning Essid: "); 3815 ieee80211_print_essid(essids[i].data, essids[i].len); 3816 printf("\n"); 3817 } 3818#endif 3819 } 3820 3821 /* 3822 * Build a probe request frame. Most of the following code is a 3823 * copy & paste of what is done in net80211. 3824 */ 3825 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 3826 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 3827 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 3828 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 3829 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 3830 IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr); 3831 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 3832 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 3833 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 3834 3835 frm = (uint8_t *)(wh + 1); 3836 frm = ieee80211_add_ssid(frm, NULL, 0); 3837 frm = ieee80211_add_rates(frm, rs); 3838 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 3839 frm = ieee80211_add_xrates(frm, rs); 3840 3841 /* Set length of probe request. */ 3842 tx->len = htole16(frm - (uint8_t *)wh); 3843 3844 /* 3845 * Construct information about the channel that we 3846 * want to scan. The firmware expects this to be directly 3847 * after the scan probe request 3848 */ 3849 chan = (struct wpi_scan_chan *)frm; 3850 chan->chan = htole16(ieee80211_chan2ieee(ic, c)); 3851 chan->flags = 0; 3852 if (nssid) { 3853 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 3854 chan->flags |= WPI_CHAN_NPBREQS(nssid); 3855 } else 3856 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 3857 3858 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 3859 chan->flags |= WPI_CHAN_ACTIVE; 3860 3861 /* 3862 * Calculate the active/passive dwell times. 3863 */ 3864 3865 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 3866 dwell_passive = wpi_get_passive_dwell_time(sc, c); 3867 3868 /* Make sure they're valid. */ 3869 if (dwell_passive <= dwell_active) 3870 dwell_passive = dwell_active + 1; 3871 3872 chan->active = htole16(dwell_active); 3873 chan->passive = htole16(dwell_passive); 3874 3875 chan->dsp_gain = 0x6e; /* Default level */ 3876 3877 if (IEEE80211_IS_CHAN_5GHZ(c)) 3878 chan->rf_gain = 0x3b; 3879 else 3880 chan->rf_gain = 0x28; 3881 3882 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 3883 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 3884 3885 hdr->nchan++; 3886 chan++; 3887 3888 buflen = (uint8_t *)chan - buf; 3889 hdr->len = htole16(buflen); 3890 3891 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 3892 hdr->nchan); 3893 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 3894 free(buf, M_DEVBUF); 3895 3896 if (error != 0) 3897 goto fail; 3898 3899 sc->sc_scan_timer = 5; 3900 3901 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3902 3903 return 0; 3904 3905fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3906 3907 return error; 3908} 3909 3910static int 3911wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 3912{ 3913 struct ieee80211com *ic = vap->iv_ic; 3914 struct ieee80211_node *ni = vap->iv_bss; 3915 int error; 3916 3917 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3918 3919 /* Update adapter configuration. */ 3920 sc->rxon.associd = 0; 3921 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 3922 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 3923 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 3924 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3925 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 3926 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3927 if (ic->ic_flags & IEEE80211_F_SHSLOT) 3928 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 3929 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 3930 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 3931 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 3932 sc->rxon.cck_mask = 0; 3933 sc->rxon.ofdm_mask = 0x15; 3934 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 3935 sc->rxon.cck_mask = 0x03; 3936 sc->rxon.ofdm_mask = 0; 3937 } else { 3938 /* Assume 802.11b/g. */ 3939 sc->rxon.cck_mask = 0x0f; 3940 sc->rxon.ofdm_mask = 0x15; 3941 } 3942 3943 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n", 3944 sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask, 3945 sc->rxon.ofdm_mask); 3946 3947 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 3948 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3949 __func__); 3950 } 3951 3952 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3953 3954 return error; 3955} 3956 3957static int 3958wpi_config_beacon(struct wpi_vap *wvp) 3959{ 3960 struct ieee80211com *ic = wvp->wv_vap.iv_ic; 3961 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 3962 struct wpi_buf *bcn = &wvp->wv_bcbuf; 3963 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3964 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 3965 struct ieee80211_tim_ie *tie; 3966 struct mbuf *m; 3967 uint8_t *ptr; 3968 int error; 3969 3970 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3971 3972 WPI_VAP_LOCK_ASSERT(wvp); 3973 3974 cmd->len = htole16(bcn->m->m_pkthdr.len); 3975 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3976 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3977 3978 /* XXX seems to be unused */ 3979 if (*(bo->bo_tim) == IEEE80211_ELEMID_TIM) { 3980 tie = (struct ieee80211_tim_ie *) bo->bo_tim; 3981 ptr = mtod(bcn->m, uint8_t *); 3982 3983 cmd->tim = htole16(bo->bo_tim - ptr); 3984 cmd->timsz = tie->tim_len; 3985 } 3986 3987 /* Necessary for recursion in ieee80211_beacon_update(). */ 3988 m = bcn->m; 3989 bcn->m = m_dup(m, M_NOWAIT); 3990 if (bcn->m == NULL) { 3991 device_printf(sc->sc_dev, 3992 "%s: could not copy beacon frame\n", __func__); 3993 error = ENOMEM; 3994 goto end; 3995 } 3996 3997 if ((error = wpi_cmd2(sc, bcn)) != 0) { 3998 device_printf(sc->sc_dev, 3999 "%s: could not update beacon frame, error %d", __func__, 4000 error); 4001 } 4002 4003 /* Restore mbuf. */ 4004end: bcn->m = m; 4005 4006 return error; 4007} 4008 4009static int 4010wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 4011{ 4012 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 4013 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4014 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4015 struct mbuf *m; 4016 int error; 4017 4018 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4019 4020 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 4021 return EINVAL; 4022 4023 m = ieee80211_beacon_alloc(ni, bo); 4024 if (m == NULL) { 4025 device_printf(sc->sc_dev, 4026 "%s: could not allocate beacon frame\n", __func__); 4027 return ENOMEM; 4028 } 4029 4030 WPI_VAP_LOCK(wvp); 4031 if (bcn->m != NULL) 4032 m_freem(bcn->m); 4033 4034 bcn->m = m; 4035 4036 error = wpi_config_beacon(wvp); 4037 WPI_VAP_UNLOCK(wvp); 4038 4039 return error; 4040} 4041 4042static void 4043wpi_update_beacon(struct ieee80211vap *vap, int item) 4044{ 4045 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 4046 struct wpi_vap *wvp = WPI_VAP(vap); 4047 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4048 struct ieee80211_beacon_offsets *bo = &wvp->wv_boff; 4049 struct ieee80211_node *ni = vap->iv_bss; 4050 int mcast = 0; 4051 4052 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4053 4054 WPI_VAP_LOCK(wvp); 4055 if (bcn->m == NULL) { 4056 bcn->m = ieee80211_beacon_alloc(ni, bo); 4057 if (bcn->m == NULL) { 4058 device_printf(sc->sc_dev, 4059 "%s: could not allocate beacon frame\n", __func__); 4060 4061 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, 4062 __func__); 4063 4064 WPI_VAP_UNLOCK(wvp); 4065 return; 4066 } 4067 } 4068 WPI_VAP_UNLOCK(wvp); 4069 4070 if (item == IEEE80211_BEACON_TIM) 4071 mcast = 1; /* TODO */ 4072 4073 setbit(bo->bo_flags, item); 4074 ieee80211_beacon_update(ni, bo, bcn->m, mcast); 4075 4076 WPI_VAP_LOCK(wvp); 4077 wpi_config_beacon(wvp); 4078 WPI_VAP_UNLOCK(wvp); 4079 4080 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4081} 4082 4083static void 4084wpi_newassoc(struct ieee80211_node *ni, int isnew) 4085{ 4086 struct ieee80211vap *vap = ni->ni_vap; 4087 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 4088 struct wpi_node *wn = WPI_NODE(ni); 4089 int error; 4090 4091 WPI_NT_LOCK(sc); 4092 4093 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4094 4095 if (vap->iv_opmode != IEEE80211_M_STA && wn->id == WPI_ID_UNDEFINED) { 4096 if ((error = wpi_add_ibss_node(sc, ni)) != 0) { 4097 device_printf(sc->sc_dev, 4098 "%s: could not add IBSS node, error %d\n", 4099 __func__, error); 4100 } 4101 } 4102 WPI_NT_UNLOCK(sc); 4103} 4104 4105static int 4106wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 4107{ 4108 struct ieee80211com *ic = vap->iv_ic; 4109 struct ieee80211_node *ni = vap->iv_bss; 4110 int error; 4111 4112 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4113 4114 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 4115 /* Link LED blinks while monitoring. */ 4116 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 4117 return 0; 4118 } 4119 4120 /* XXX kernel panic workaround */ 4121 if (ni->ni_chan == IEEE80211_CHAN_ANYC) { 4122 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 4123 __func__); 4124 return EINVAL; 4125 } 4126 4127 if ((error = wpi_set_timing(sc, ni)) != 0) { 4128 device_printf(sc->sc_dev, 4129 "%s: could not set timing, error %d\n", __func__, error); 4130 return error; 4131 } 4132 4133 /* Update adapter configuration. */ 4134 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4135 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 4136 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 4137 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4138 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 4139 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4140 /* Short preamble and slot time are negotiated when associating. */ 4141 sc->rxon.flags &= ~htole32(WPI_RXON_SHPREAMBLE | WPI_RXON_SHSLOT); 4142 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4143 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4144 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4145 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4146 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 4147 sc->rxon.cck_mask = 0; 4148 sc->rxon.ofdm_mask = 0x15; 4149 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 4150 sc->rxon.cck_mask = 0x03; 4151 sc->rxon.ofdm_mask = 0; 4152 } else { 4153 /* Assume 802.11b/g. */ 4154 sc->rxon.cck_mask = 0x0f; 4155 sc->rxon.ofdm_mask = 0x15; 4156 } 4157 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 4158 4159 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 4160 4161 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 4162 sc->rxon.chan, sc->rxon.flags); 4163 4164 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4165 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4166 __func__); 4167 return error; 4168 } 4169 4170 if (vap->iv_opmode == IEEE80211_M_IBSS) { 4171 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 4172 device_printf(sc->sc_dev, 4173 "%s: could not setup beacon, error %d\n", __func__, 4174 error); 4175 return error; 4176 } 4177 } 4178 4179 if (vap->iv_opmode == IEEE80211_M_STA) { 4180 /* Add BSS node. */ 4181 WPI_NT_LOCK(sc); 4182 error = wpi_add_sta_node(sc, ni); 4183 WPI_NT_UNLOCK(sc); 4184 if (error != 0) { 4185 device_printf(sc->sc_dev, 4186 "%s: could not add BSS node, error %d\n", __func__, 4187 error); 4188 return error; 4189 } 4190 } 4191 4192 /* Link LED always on while associated. */ 4193 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4194 4195 /* Start periodic calibration timer. */ 4196 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 4197 4198 /* Enable power-saving mode if requested by user. */ 4199 if (vap->iv_flags & IEEE80211_F_PMGTON) 4200 (void)wpi_set_pslevel(sc, 0, 3, 1); 4201 else 4202 (void)wpi_set_pslevel(sc, 0, 0, 1); 4203 4204 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4205 4206 return 0; 4207} 4208 4209static int 4210wpi_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k, 4211 ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix) 4212{ 4213 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 4214 4215 if (!(&vap->iv_nw_keys[0] <= k && 4216 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID])) { 4217 if (k->wk_flags & IEEE80211_KEY_GROUP) { 4218 /* should not happen */ 4219 DPRINTF(sc, WPI_DEBUG_KEY, "%s: bogus group key\n", 4220 __func__); 4221 return 0; 4222 } 4223 *keyix = 0; /* NB: use key index 0 for ucast key */ 4224 } else { 4225 *keyix = *rxkeyix = k - vap->iv_nw_keys; 4226 4227 if (k->wk_cipher->ic_cipher == IEEE80211_CIPHER_AES_CCM) 4228 k->wk_flags |= IEEE80211_KEY_SWCRYPT; 4229 } 4230 return 1; 4231} 4232 4233static int 4234wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k, 4235 const uint8_t mac[IEEE80211_ADDR_LEN]) 4236{ 4237 const struct ieee80211_cipher *cip = k->wk_cipher; 4238 struct ieee80211com *ic = vap->iv_ic; 4239 struct ieee80211_node *ni = vap->iv_bss; 4240 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4241 struct wpi_node *wn = WPI_NODE(ni); 4242 struct wpi_node_info node; 4243 uint16_t kflags; 4244 int error; 4245 4246 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4247 4248 switch (cip->ic_cipher) { 4249 case IEEE80211_CIPHER_AES_CCM: 4250 if (k->wk_flags & IEEE80211_KEY_GROUP) 4251 return 1; 4252 4253 kflags = WPI_KFLAG_CCMP; 4254 break; 4255 default: 4256 /* null_key_set() */ 4257 return 1; 4258 } 4259 4260 if (wn->id == WPI_ID_UNDEFINED) 4261 return 0; 4262 4263 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4264 if (k->wk_flags & IEEE80211_KEY_GROUP) 4265 kflags |= WPI_KFLAG_MULTICAST; 4266 4267 memset(&node, 0, sizeof node); 4268 node.id = wn->id; 4269 node.control = WPI_NODE_UPDATE; 4270 node.flags = WPI_FLAG_KEY_SET; 4271 node.kflags = htole16(kflags); 4272 memcpy(node.key, k->wk_key, k->wk_keylen); 4273 4274 DPRINTF(sc, WPI_DEBUG_KEY, "set key id=%d for node %d\n", k->wk_keyix, 4275 node.id); 4276 4277 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4278 if (error != 0) { 4279 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4280 error); 4281 return 0; 4282 } 4283 4284 return 1; 4285} 4286 4287static int 4288wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4289{ 4290 const struct ieee80211_cipher *cip = k->wk_cipher; 4291 struct ieee80211com *ic = vap->iv_ic; 4292 struct ieee80211_node *ni = vap->iv_bss; 4293 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4294 struct wpi_node *wn = WPI_NODE(ni); 4295 struct wpi_node_info node; 4296 4297 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4298 4299 switch (cip->ic_cipher) { 4300 case IEEE80211_CIPHER_AES_CCM: 4301 break; 4302 default: 4303 /* null_key_delete() */ 4304 return 1; 4305 } 4306 4307 if (vap->iv_state != IEEE80211_S_RUN || 4308 (k->wk_flags & IEEE80211_KEY_GROUP)) 4309 return 1; /* Nothing to do. */ 4310 4311 memset(&node, 0, sizeof node); 4312 node.id = wn->id; 4313 node.control = WPI_NODE_UPDATE; 4314 node.flags = WPI_FLAG_KEY_SET; 4315 4316 DPRINTF(sc, WPI_DEBUG_KEY, "delete keys for node %d\n", node.id); 4317 (void)wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4318 4319 return 1; 4320} 4321 4322/* 4323 * This function is called after the runtime firmware notifies us of its 4324 * readiness (called in a process context). 4325 */ 4326static int 4327wpi_post_alive(struct wpi_softc *sc) 4328{ 4329 int ntries, error; 4330 4331 /* Check (again) that the radio is not disabled. */ 4332 if ((error = wpi_nic_lock(sc)) != 0) 4333 return error; 4334 4335 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4336 4337 /* NB: Runtime firmware must be up and running. */ 4338 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4339 device_printf(sc->sc_dev, 4340 "RF switch: radio disabled (%s)\n", __func__); 4341 wpi_nic_unlock(sc); 4342 return EPERM; /* :-) */ 4343 } 4344 wpi_nic_unlock(sc); 4345 4346 /* Wait for thermal sensor to calibrate. */ 4347 for (ntries = 0; ntries < 1000; ntries++) { 4348 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4349 break; 4350 DELAY(10); 4351 } 4352 4353 if (ntries == 1000) { 4354 device_printf(sc->sc_dev, 4355 "timeout waiting for thermal sensor calibration\n"); 4356 return ETIMEDOUT; 4357 } 4358 4359 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4360 return 0; 4361} 4362 4363/* 4364 * The firmware boot code is small and is intended to be copied directly into 4365 * the NIC internal memory (no DMA transfer). 4366 */ 4367static int 4368wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 4369{ 4370 int error, ntries; 4371 4372 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4373 4374 size /= sizeof (uint32_t); 4375 4376 if ((error = wpi_nic_lock(sc)) != 0) 4377 return error; 4378 4379 /* Copy microcode image into NIC memory. */ 4380 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4381 (const uint32_t *)ucode, size); 4382 4383 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4384 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4385 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4386 4387 /* Start boot load now. */ 4388 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4389 4390 /* Wait for transfer to complete. */ 4391 for (ntries = 0; ntries < 1000; ntries++) { 4392 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4393 DPRINTF(sc, WPI_DEBUG_HW, 4394 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4395 WPI_FH_TX_STATUS_IDLE(6), 4396 status & WPI_FH_TX_STATUS_IDLE(6)); 4397 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4398 DPRINTF(sc, WPI_DEBUG_HW, 4399 "Status Match! - ntries = %d\n", ntries); 4400 break; 4401 } 4402 DELAY(10); 4403 } 4404 if (ntries == 1000) { 4405 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4406 __func__); 4407 wpi_nic_unlock(sc); 4408 return ETIMEDOUT; 4409 } 4410 4411 /* Enable boot after power up. */ 4412 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4413 4414 wpi_nic_unlock(sc); 4415 return 0; 4416} 4417 4418static int 4419wpi_load_firmware(struct wpi_softc *sc) 4420{ 4421 struct wpi_fw_info *fw = &sc->fw; 4422 struct wpi_dma_info *dma = &sc->fw_dma; 4423 int error; 4424 4425 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4426 4427 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4428 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4429 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4430 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4431 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4432 4433 /* Tell adapter where to find initialization sections. */ 4434 if ((error = wpi_nic_lock(sc)) != 0) 4435 return error; 4436 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4437 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4438 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4439 dma->paddr + WPI_FW_DATA_MAXSZ); 4440 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4441 wpi_nic_unlock(sc); 4442 4443 /* Load firmware boot code. */ 4444 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4445 if (error != 0) { 4446 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4447 __func__); 4448 return error; 4449 } 4450 4451 /* Now press "execute". */ 4452 WPI_WRITE(sc, WPI_RESET, 0); 4453 4454 /* Wait at most one second for first alive notification. */ 4455 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4456 device_printf(sc->sc_dev, 4457 "%s: timeout waiting for adapter to initialize, error %d\n", 4458 __func__, error); 4459 return error; 4460 } 4461 4462 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4463 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4464 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4465 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4466 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4467 4468 /* Tell adapter where to find runtime sections. */ 4469 if ((error = wpi_nic_lock(sc)) != 0) 4470 return error; 4471 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4472 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 4473 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4474 dma->paddr + WPI_FW_DATA_MAXSZ); 4475 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 4476 WPI_FW_UPDATED | fw->main.textsz); 4477 wpi_nic_unlock(sc); 4478 4479 return 0; 4480} 4481 4482static int 4483wpi_read_firmware(struct wpi_softc *sc) 4484{ 4485 const struct firmware *fp; 4486 struct wpi_fw_info *fw = &sc->fw; 4487 const struct wpi_firmware_hdr *hdr; 4488 int error; 4489 4490 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4491 4492 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4493 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 4494 4495 WPI_UNLOCK(sc); 4496 fp = firmware_get(WPI_FW_NAME); 4497 WPI_LOCK(sc); 4498 4499 if (fp == NULL) { 4500 device_printf(sc->sc_dev, 4501 "could not load firmware image '%s'\n", WPI_FW_NAME); 4502 return EINVAL; 4503 } 4504 4505 sc->fw_fp = fp; 4506 4507 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 4508 device_printf(sc->sc_dev, 4509 "firmware file too short: %zu bytes\n", fp->datasize); 4510 error = EINVAL; 4511 goto fail; 4512 } 4513 4514 fw->size = fp->datasize; 4515 fw->data = (const uint8_t *)fp->data; 4516 4517 /* Extract firmware header information. */ 4518 hdr = (const struct wpi_firmware_hdr *)fw->data; 4519 4520 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 4521 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 4522 4523 fw->main.textsz = le32toh(hdr->rtextsz); 4524 fw->main.datasz = le32toh(hdr->rdatasz); 4525 fw->init.textsz = le32toh(hdr->itextsz); 4526 fw->init.datasz = le32toh(hdr->idatasz); 4527 fw->boot.textsz = le32toh(hdr->btextsz); 4528 fw->boot.datasz = 0; 4529 4530 /* Sanity-check firmware header. */ 4531 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 4532 fw->main.datasz > WPI_FW_DATA_MAXSZ || 4533 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 4534 fw->init.datasz > WPI_FW_DATA_MAXSZ || 4535 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 4536 (fw->boot.textsz & 3) != 0) { 4537 device_printf(sc->sc_dev, "invalid firmware header\n"); 4538 error = EINVAL; 4539 goto fail; 4540 } 4541 4542 /* Check that all firmware sections fit. */ 4543 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 4544 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 4545 device_printf(sc->sc_dev, 4546 "firmware file too short: %zu bytes\n", fw->size); 4547 error = EINVAL; 4548 goto fail; 4549 } 4550 4551 /* Get pointers to firmware sections. */ 4552 fw->main.text = (const uint8_t *)(hdr + 1); 4553 fw->main.data = fw->main.text + fw->main.textsz; 4554 fw->init.text = fw->main.data + fw->main.datasz; 4555 fw->init.data = fw->init.text + fw->init.textsz; 4556 fw->boot.text = fw->init.data + fw->init.datasz; 4557 4558 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4559 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 4560 "runtime (text: %u, data: %u) init (text: %u, data %u) " 4561 "boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver), 4562 fw->main.textsz, fw->main.datasz, 4563 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 4564 4565 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 4566 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 4567 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 4568 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 4569 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 4570 4571 return 0; 4572 4573fail: wpi_unload_firmware(sc); 4574 return error; 4575} 4576 4577/** 4578 * Free the referenced firmware image 4579 */ 4580static void 4581wpi_unload_firmware(struct wpi_softc *sc) 4582{ 4583 if (sc->fw_fp != NULL) { 4584 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 4585 sc->fw_fp = NULL; 4586 } 4587} 4588 4589static int 4590wpi_clock_wait(struct wpi_softc *sc) 4591{ 4592 int ntries; 4593 4594 /* Set "initialization complete" bit. */ 4595 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4596 4597 /* Wait for clock stabilization. */ 4598 for (ntries = 0; ntries < 2500; ntries++) { 4599 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 4600 return 0; 4601 DELAY(100); 4602 } 4603 device_printf(sc->sc_dev, 4604 "%s: timeout waiting for clock stabilization\n", __func__); 4605 4606 return ETIMEDOUT; 4607} 4608 4609static int 4610wpi_apm_init(struct wpi_softc *sc) 4611{ 4612 uint32_t reg; 4613 int error; 4614 4615 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4616 4617 /* Disable L0s exit timer (NMI bug workaround). */ 4618 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 4619 /* Don't wait for ICH L0s (ICH bug workaround). */ 4620 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 4621 4622 /* Set FH wait threshold to max (HW bug under stress workaround). */ 4623 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 4624 4625 /* Retrieve PCIe Active State Power Management (ASPM). */ 4626 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 4627 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 4628 if (reg & 0x02) /* L1 Entry enabled. */ 4629 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4630 else 4631 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4632 4633 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 4634 4635 /* Wait for clock stabilization before accessing prph. */ 4636 if ((error = wpi_clock_wait(sc)) != 0) 4637 return error; 4638 4639 if ((error = wpi_nic_lock(sc)) != 0) 4640 return error; 4641 /* Enable DMA and BSM (Bootstrap State Machine). */ 4642 wpi_prph_write(sc, WPI_APMG_CLK_EN, 4643 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 4644 DELAY(20); 4645 /* Disable L1-Active. */ 4646 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 4647 /* ??? */ 4648 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000E00); 4649 wpi_nic_unlock(sc); 4650 4651 return 0; 4652} 4653 4654static void 4655wpi_apm_stop_master(struct wpi_softc *sc) 4656{ 4657 int ntries; 4658 4659 /* Stop busmaster DMA activity. */ 4660 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 4661 4662 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 4663 WPI_GP_CNTRL_MAC_PS) 4664 return; /* Already asleep. */ 4665 4666 for (ntries = 0; ntries < 100; ntries++) { 4667 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 4668 return; 4669 DELAY(10); 4670 } 4671 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", 4672 __func__); 4673} 4674 4675static void 4676wpi_apm_stop(struct wpi_softc *sc) 4677{ 4678 wpi_apm_stop_master(sc); 4679 4680 /* Reset the entire device. */ 4681 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 4682 DELAY(10); 4683 /* Clear "initialization complete" bit. */ 4684 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4685} 4686 4687static void 4688wpi_nic_config(struct wpi_softc *sc) 4689{ 4690 uint32_t rev; 4691 4692 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4693 4694 /* voodoo from the Linux "driver".. */ 4695 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 4696 if ((rev & 0xc0) == 0x40) 4697 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 4698 else if (!(rev & 0x80)) 4699 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 4700 4701 if (sc->cap == 0x80) 4702 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 4703 4704 if ((sc->rev & 0xf0) == 0xd0) 4705 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4706 else 4707 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4708 4709 if (sc->type > 1) 4710 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 4711} 4712 4713static int 4714wpi_hw_init(struct wpi_softc *sc) 4715{ 4716 int chnl, ntries, error; 4717 4718 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4719 4720 /* Clear pending interrupts. */ 4721 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4722 4723 if ((error = wpi_apm_init(sc)) != 0) { 4724 device_printf(sc->sc_dev, 4725 "%s: could not power ON adapter, error %d\n", __func__, 4726 error); 4727 return error; 4728 } 4729 4730 /* Select VMAIN power source. */ 4731 if ((error = wpi_nic_lock(sc)) != 0) 4732 return error; 4733 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 4734 wpi_nic_unlock(sc); 4735 /* Spin until VMAIN gets selected. */ 4736 for (ntries = 0; ntries < 5000; ntries++) { 4737 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 4738 break; 4739 DELAY(10); 4740 } 4741 if (ntries == 5000) { 4742 device_printf(sc->sc_dev, "timeout selecting power source\n"); 4743 return ETIMEDOUT; 4744 } 4745 4746 /* Perform adapter initialization. */ 4747 wpi_nic_config(sc); 4748 4749 /* Initialize RX ring. */ 4750 if ((error = wpi_nic_lock(sc)) != 0) 4751 return error; 4752 /* Set physical address of RX ring. */ 4753 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 4754 /* Set physical address of RX read pointer. */ 4755 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 4756 offsetof(struct wpi_shared, next)); 4757 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 4758 /* Enable RX. */ 4759 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 4760 WPI_FH_RX_CONFIG_DMA_ENA | 4761 WPI_FH_RX_CONFIG_RDRBD_ENA | 4762 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 4763 WPI_FH_RX_CONFIG_MAXFRAG | 4764 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 4765 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 4766 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 4767 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 4768 wpi_nic_unlock(sc); 4769 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 4770 4771 /* Initialize TX rings. */ 4772 if ((error = wpi_nic_lock(sc)) != 0) 4773 return error; 4774 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 4775 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 4776 /* Enable all 6 TX rings. */ 4777 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 4778 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 4779 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 4780 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 4781 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 4782 /* Set physical address of TX rings. */ 4783 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 4784 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 4785 4786 /* Enable all DMA channels. */ 4787 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 4788 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 4789 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 4790 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 4791 } 4792 wpi_nic_unlock(sc); 4793 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 4794 4795 /* Clear "radio off" and "commands blocked" bits. */ 4796 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4797 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 4798 4799 /* Clear pending interrupts. */ 4800 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4801 /* Enable interrupts. */ 4802 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 4803 4804 /* _Really_ make sure "radio off" bit is cleared! */ 4805 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4806 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4807 4808 if ((error = wpi_load_firmware(sc)) != 0) { 4809 device_printf(sc->sc_dev, 4810 "%s: could not load firmware, error %d\n", __func__, 4811 error); 4812 return error; 4813 } 4814 /* Wait at most one second for firmware alive notification. */ 4815 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4816 device_printf(sc->sc_dev, 4817 "%s: timeout waiting for adapter to initialize, error %d\n", 4818 __func__, error); 4819 return error; 4820 } 4821 4822 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4823 4824 /* Do post-firmware initialization. */ 4825 return wpi_post_alive(sc); 4826} 4827 4828static void 4829wpi_hw_stop(struct wpi_softc *sc) 4830{ 4831 int chnl, qid, ntries; 4832 4833 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4834 4835 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 4836 wpi_nic_lock(sc); 4837 4838 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 4839 4840 /* Disable interrupts. */ 4841 WPI_WRITE(sc, WPI_INT_MASK, 0); 4842 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4843 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 4844 4845 /* Make sure we no longer hold the NIC lock. */ 4846 wpi_nic_unlock(sc); 4847 4848 if (wpi_nic_lock(sc) == 0) { 4849 /* Stop TX scheduler. */ 4850 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 4851 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 4852 4853 /* Stop all DMA channels. */ 4854 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 4855 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 4856 for (ntries = 0; ntries < 200; ntries++) { 4857 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 4858 WPI_FH_TX_STATUS_IDLE(chnl)) 4859 break; 4860 DELAY(10); 4861 } 4862 } 4863 wpi_nic_unlock(sc); 4864 } 4865 4866 /* Stop RX ring. */ 4867 wpi_reset_rx_ring(sc); 4868 4869 /* Reset all TX rings. */ 4870 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 4871 wpi_reset_tx_ring(sc, &sc->txq[qid]); 4872 4873 if (wpi_nic_lock(sc) == 0) { 4874 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 4875 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 4876 wpi_nic_unlock(sc); 4877 } 4878 DELAY(5); 4879 /* Power OFF adapter. */ 4880 wpi_apm_stop(sc); 4881} 4882 4883static void 4884wpi_radio_on(void *arg0, int pending) 4885{ 4886 struct wpi_softc *sc = arg0; 4887 struct ifnet *ifp = sc->sc_ifp; 4888 struct ieee80211com *ic = ifp->if_l2com; 4889 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4890 4891 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 4892 4893 if (vap != NULL) { 4894 wpi_init(sc); 4895 ieee80211_init(vap); 4896 } 4897 4898 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) { 4899 WPI_LOCK(sc); 4900 callout_stop(&sc->watchdog_rfkill); 4901 WPI_UNLOCK(sc); 4902 } 4903} 4904 4905static void 4906wpi_radio_off(void *arg0, int pending) 4907{ 4908 struct wpi_softc *sc = arg0; 4909 struct ifnet *ifp = sc->sc_ifp; 4910 struct ieee80211com *ic = ifp->if_l2com; 4911 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4912 4913 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 4914 4915 wpi_stop(sc); 4916 if (vap != NULL) 4917 ieee80211_stop(vap); 4918 4919 WPI_LOCK(sc); 4920 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 4921 WPI_UNLOCK(sc); 4922} 4923 4924static void 4925wpi_init_locked(struct wpi_softc *sc) 4926{ 4927 struct ifnet *ifp = sc->sc_ifp; 4928 int error; 4929 4930 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4931 4932 WPI_LOCK_ASSERT(sc); 4933 4934 /* Check that the radio is not disabled by hardware switch. */ 4935 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 4936 device_printf(sc->sc_dev, 4937 "RF switch: radio disabled (%s)\n", __func__); 4938 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 4939 sc); 4940 return; 4941 } 4942 4943 /* Read firmware images from the filesystem. */ 4944 if ((error = wpi_read_firmware(sc)) != 0) { 4945 device_printf(sc->sc_dev, 4946 "%s: could not read firmware, error %d\n", __func__, 4947 error); 4948 goto fail; 4949 } 4950 4951 /* Initialize hardware and upload firmware. */ 4952 error = wpi_hw_init(sc); 4953 wpi_unload_firmware(sc); 4954 if (error != 0) { 4955 device_printf(sc->sc_dev, 4956 "%s: could not initialize hardware, error %d\n", __func__, 4957 error); 4958 goto fail; 4959 } 4960 4961 /* Configure adapter now that it is ready. */ 4962 sc->txq_active = 1; 4963 if ((error = wpi_config(sc)) != 0) { 4964 device_printf(sc->sc_dev, 4965 "%s: could not configure device, error %d\n", __func__, 4966 error); 4967 goto fail; 4968 } 4969 4970 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 4971 ifp->if_drv_flags |= IFF_DRV_RUNNING; 4972 4973 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 4974 4975 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4976 4977 return; 4978 4979fail: wpi_stop_locked(sc); 4980 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4981} 4982 4983static void 4984wpi_init(void *arg) 4985{ 4986 struct wpi_softc *sc = arg; 4987 struct ifnet *ifp = sc->sc_ifp; 4988 struct ieee80211com *ic = ifp->if_l2com; 4989 4990 WPI_LOCK(sc); 4991 wpi_init_locked(sc); 4992 WPI_UNLOCK(sc); 4993 4994 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 4995 ieee80211_start_all(ic); 4996} 4997 4998static void 4999wpi_stop_locked(struct wpi_softc *sc) 5000{ 5001 struct ifnet *ifp = sc->sc_ifp; 5002 5003 WPI_LOCK_ASSERT(sc); 5004 5005 WPI_TXQ_LOCK(sc); 5006 sc->txq_active = 0; 5007 WPI_TXQ_UNLOCK(sc); 5008 5009 sc->sc_scan_timer = 0; 5010 sc->sc_tx_timer = 0; 5011 callout_stop(&sc->watchdog_to); 5012 callout_stop(&sc->calib_to); 5013 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 5014 5015 /* Power OFF hardware. */ 5016 wpi_hw_stop(sc); 5017} 5018 5019static void 5020wpi_stop(struct wpi_softc *sc) 5021{ 5022 WPI_LOCK(sc); 5023 wpi_stop_locked(sc); 5024 WPI_UNLOCK(sc); 5025} 5026 5027/* 5028 * Callback from net80211 to start a scan. 5029 */ 5030static void 5031wpi_scan_start(struct ieee80211com *ic) 5032{ 5033 struct wpi_softc *sc = ic->ic_ifp->if_softc; 5034 5035 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 5036} 5037 5038/* 5039 * Callback from net80211 to terminate a scan. 5040 */ 5041static void 5042wpi_scan_end(struct ieee80211com *ic) 5043{ 5044 struct ifnet *ifp = ic->ic_ifp; 5045 struct wpi_softc *sc = ifp->if_softc; 5046 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5047 5048 if (vap->iv_state == IEEE80211_S_RUN) 5049 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 5050} 5051 5052/** 5053 * Called by the net80211 framework to indicate to the driver 5054 * that the channel should be changed 5055 */ 5056static void 5057wpi_set_channel(struct ieee80211com *ic) 5058{ 5059 const struct ieee80211_channel *c = ic->ic_curchan; 5060 struct ifnet *ifp = ic->ic_ifp; 5061 struct wpi_softc *sc = ifp->if_softc; 5062 int error; 5063 5064 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5065 5066 WPI_LOCK(sc); 5067 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 5068 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 5069 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 5070 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 5071 5072 /* 5073 * Only need to set the channel in Monitor mode. AP scanning and auth 5074 * are already taken care of by their respective firmware commands. 5075 */ 5076 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 5077 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 5078 if (IEEE80211_IS_CHAN_2GHZ(c)) { 5079 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 5080 WPI_RXON_24GHZ); 5081 } else { 5082 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 5083 WPI_RXON_24GHZ); 5084 } 5085 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) 5086 device_printf(sc->sc_dev, 5087 "%s: error %d settting channel\n", __func__, 5088 error); 5089 } 5090 WPI_UNLOCK(sc); 5091} 5092 5093/** 5094 * Called by net80211 to indicate that we need to scan the current 5095 * channel. The channel is previously be set via the wpi_set_channel 5096 * callback. 5097 */ 5098static void 5099wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 5100{ 5101 struct ieee80211vap *vap = ss->ss_vap; 5102 struct ieee80211com *ic = vap->iv_ic; 5103 struct wpi_softc *sc = ic->ic_ifp->if_softc; 5104 int error; 5105 5106 if (sc->rxon.chan != ieee80211_chan2ieee(ic, ic->ic_curchan)) { 5107 WPI_LOCK(sc); 5108 error = wpi_scan(sc, ic->ic_curchan); 5109 WPI_UNLOCK(sc); 5110 if (error != 0) 5111 ieee80211_cancel_scan(vap); 5112 } else { 5113 /* Send probe request when associated. */ 5114 sc->sc_scan_curchan(ss, maxdwell); 5115 } 5116} 5117 5118/** 5119 * Called by the net80211 framework to indicate 5120 * the minimum dwell time has been met, terminate the scan. 5121 * We don't actually terminate the scan as the firmware will notify 5122 * us when it's finished and we have no way to interrupt it. 5123 */ 5124static void 5125wpi_scan_mindwell(struct ieee80211_scan_state *ss) 5126{ 5127 /* NB: don't try to abort scan; wait for firmware to finish */ 5128} 5129 5130static void 5131wpi_hw_reset(void *arg, int pending) 5132{ 5133 struct wpi_softc *sc = arg; 5134 struct ifnet *ifp = sc->sc_ifp; 5135 struct ieee80211com *ic = ifp->if_l2com; 5136 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5137 5138 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5139 5140 wpi_stop(sc); 5141 if (vap != NULL) 5142 ieee80211_stop(vap); 5143 wpi_init(sc); 5144 if (vap != NULL) 5145 ieee80211_init(vap); 5146} 5147