if_wpi.c revision 280072
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 280072 2015-03-15 20:40:59Z 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 struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 134 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 135 const uint8_t [IEEE80211_ADDR_LEN], 136 const uint8_t [IEEE80211_ADDR_LEN]); 137static void wpi_vap_delete(struct ieee80211vap *); 138static int wpi_detach(device_t); 139static int wpi_shutdown(device_t); 140static int wpi_suspend(device_t); 141static int wpi_resume(device_t); 142static int wpi_nic_lock(struct wpi_softc *); 143static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 144static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 145static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 146 void **, bus_size_t, bus_size_t); 147static void wpi_dma_contig_free(struct wpi_dma_info *); 148static int wpi_alloc_shared(struct wpi_softc *); 149static void wpi_free_shared(struct wpi_softc *); 150static int wpi_alloc_fwmem(struct wpi_softc *); 151static void wpi_free_fwmem(struct wpi_softc *); 152static int wpi_alloc_rx_ring(struct wpi_softc *); 153static void wpi_update_rx_ring(struct wpi_softc *); 154static void wpi_reset_rx_ring(struct wpi_softc *); 155static void wpi_free_rx_ring(struct wpi_softc *); 156static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 157 int); 158static void wpi_update_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 159static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 160static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 161static int wpi_read_eeprom(struct wpi_softc *, 162 uint8_t macaddr[IEEE80211_ADDR_LEN]); 163static uint32_t wpi_eeprom_channel_flags(struct wpi_eeprom_chan *); 164static void wpi_read_eeprom_band(struct wpi_softc *, int); 165static int wpi_read_eeprom_channels(struct wpi_softc *, int); 166static struct wpi_eeprom_chan *wpi_find_eeprom_channel(struct wpi_softc *, 167 struct ieee80211_channel *); 168static int wpi_setregdomain(struct ieee80211com *, 169 struct ieee80211_regdomain *, int, 170 struct ieee80211_channel[]); 171static int wpi_read_eeprom_group(struct wpi_softc *, int); 172static int wpi_add_node_entry_adhoc(struct wpi_softc *); 173static void wpi_node_free(struct ieee80211_node *); 174static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 175 const uint8_t mac[IEEE80211_ADDR_LEN]); 176static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 177static void wpi_calib_timeout(void *); 178static void wpi_rx_done(struct wpi_softc *, struct wpi_rx_desc *, 179 struct wpi_rx_data *); 180static void wpi_rx_statistics(struct wpi_softc *, struct wpi_rx_desc *, 181 struct wpi_rx_data *); 182static void wpi_tx_done(struct wpi_softc *, struct wpi_rx_desc *); 183static void wpi_cmd_done(struct wpi_softc *, struct wpi_rx_desc *); 184static void wpi_notif_intr(struct wpi_softc *); 185static void wpi_wakeup_intr(struct wpi_softc *); 186static void wpi_fatal_intr(struct wpi_softc *); 187static void wpi_intr(void *); 188static int wpi_cmd2(struct wpi_softc *, struct wpi_buf *); 189static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 190 struct ieee80211_node *); 191static int wpi_tx_data_raw(struct wpi_softc *, struct mbuf *, 192 struct ieee80211_node *, 193 const struct ieee80211_bpf_params *); 194static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 195 const struct ieee80211_bpf_params *); 196static void wpi_start(struct ifnet *); 197static void wpi_start_locked(struct ifnet *); 198static void wpi_watchdog_rfkill(void *); 199static void wpi_watchdog(void *); 200static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 201static int wpi_cmd(struct wpi_softc *, int, const void *, size_t, int); 202static int wpi_mrr_setup(struct wpi_softc *); 203static int wpi_add_node(struct wpi_softc *, struct ieee80211_node *); 204static int wpi_add_broadcast_node(struct wpi_softc *, int); 205static int wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *); 206static void wpi_del_node(struct wpi_softc *, struct ieee80211_node *); 207static int wpi_updateedca(struct ieee80211com *); 208static void wpi_set_promisc(struct wpi_softc *); 209static void wpi_update_promisc(struct ifnet *); 210static void wpi_update_mcast(struct ifnet *); 211static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 212static int wpi_set_timing(struct wpi_softc *, struct ieee80211_node *); 213static void wpi_power_calibration(struct wpi_softc *); 214static int wpi_set_txpower(struct wpi_softc *, int); 215static int wpi_get_power_index(struct wpi_softc *, 216 struct wpi_power_group *, struct ieee80211_channel *, int); 217static int wpi_set_pslevel(struct wpi_softc *, uint8_t, int, int); 218static int wpi_send_btcoex(struct wpi_softc *); 219static int wpi_send_rxon(struct wpi_softc *, int, int); 220static int wpi_config(struct wpi_softc *); 221static uint16_t wpi_get_active_dwell_time(struct wpi_softc *, 222 struct ieee80211_channel *, uint8_t); 223static uint16_t wpi_limit_dwell(struct wpi_softc *, uint16_t); 224static uint16_t wpi_get_passive_dwell_time(struct wpi_softc *, 225 struct ieee80211_channel *); 226static int wpi_scan(struct wpi_softc *, struct ieee80211_channel *); 227static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 228static void wpi_update_beacon(struct ieee80211vap *, int); 229static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 230static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 231static int wpi_key_alloc(struct ieee80211vap *, struct ieee80211_key *, 232 ieee80211_keyix *, ieee80211_keyix *); 233static int wpi_key_set(struct ieee80211vap *, 234 const struct ieee80211_key *, 235 const uint8_t mac[IEEE80211_ADDR_LEN]); 236static int wpi_key_delete(struct ieee80211vap *, 237 const struct ieee80211_key *); 238static int wpi_post_alive(struct wpi_softc *); 239static int wpi_load_bootcode(struct wpi_softc *, const uint8_t *, int); 240static int wpi_load_firmware(struct wpi_softc *); 241static int wpi_read_firmware(struct wpi_softc *); 242static void wpi_unload_firmware(struct wpi_softc *); 243static int wpi_clock_wait(struct wpi_softc *); 244static int wpi_apm_init(struct wpi_softc *); 245static void wpi_apm_stop_master(struct wpi_softc *); 246static void wpi_apm_stop(struct wpi_softc *); 247static void wpi_nic_config(struct wpi_softc *); 248static int wpi_hw_init(struct wpi_softc *); 249static void wpi_hw_stop(struct wpi_softc *); 250static void wpi_radio_on(void *, int); 251static void wpi_radio_off(void *, int); 252static void wpi_init_locked(struct wpi_softc *); 253static void wpi_init(void *); 254static void wpi_stop_locked(struct wpi_softc *); 255static void wpi_stop(struct wpi_softc *); 256static void wpi_scan_start(struct ieee80211com *); 257static void wpi_scan_end(struct ieee80211com *); 258static void wpi_set_channel(struct ieee80211com *); 259static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 260static void wpi_scan_mindwell(struct ieee80211_scan_state *); 261static void wpi_hw_reset(void *, int); 262 263static device_method_t wpi_methods[] = { 264 /* Device interface */ 265 DEVMETHOD(device_probe, wpi_probe), 266 DEVMETHOD(device_attach, wpi_attach), 267 DEVMETHOD(device_detach, wpi_detach), 268 DEVMETHOD(device_shutdown, wpi_shutdown), 269 DEVMETHOD(device_suspend, wpi_suspend), 270 DEVMETHOD(device_resume, wpi_resume), 271 272 DEVMETHOD_END 273}; 274 275static driver_t wpi_driver = { 276 "wpi", 277 wpi_methods, 278 sizeof (struct wpi_softc) 279}; 280static devclass_t wpi_devclass; 281 282DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 283 284MODULE_VERSION(wpi, 1); 285 286MODULE_DEPEND(wpi, pci, 1, 1, 1); 287MODULE_DEPEND(wpi, wlan, 1, 1, 1); 288MODULE_DEPEND(wpi, firmware, 1, 1, 1); 289 290static int 291wpi_probe(device_t dev) 292{ 293 const struct wpi_ident *ident; 294 295 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 296 if (pci_get_vendor(dev) == ident->vendor && 297 pci_get_device(dev) == ident->device) { 298 device_set_desc(dev, ident->name); 299 return (BUS_PROBE_DEFAULT); 300 } 301 } 302 return ENXIO; 303} 304 305static int 306wpi_attach(device_t dev) 307{ 308 struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev); 309 struct ieee80211com *ic; 310 struct ifnet *ifp; 311 int i, error, rid; 312#ifdef WPI_DEBUG 313 int supportsa = 1; 314 const struct wpi_ident *ident; 315#endif 316 uint8_t macaddr[IEEE80211_ADDR_LEN]; 317 318 sc->sc_dev = dev; 319 320#ifdef WPI_DEBUG 321 error = resource_int_value(device_get_name(sc->sc_dev), 322 device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug)); 323 if (error != 0) 324 sc->sc_debug = 0; 325#else 326 sc->sc_debug = 0; 327#endif 328 329 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 330 331 /* 332 * Get the offset of the PCI Express Capability Structure in PCI 333 * Configuration Space. 334 */ 335 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 336 if (error != 0) { 337 device_printf(dev, "PCIe capability structure not found!\n"); 338 return error; 339 } 340 341 /* 342 * Some card's only support 802.11b/g not a, check to see if 343 * this is one such card. A 0x0 in the subdevice table indicates 344 * the entire subdevice range is to be ignored. 345 */ 346#ifdef WPI_DEBUG 347 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 348 if (ident->subdevice && 349 pci_get_subdevice(dev) == ident->subdevice) { 350 supportsa = 0; 351 break; 352 } 353 } 354#endif 355 356 /* Clear device-specific "PCI retry timeout" register (41h). */ 357 pci_write_config(dev, 0x41, 0, 1); 358 359 /* Enable bus-mastering. */ 360 pci_enable_busmaster(dev); 361 362 rid = PCIR_BAR(0); 363 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 364 RF_ACTIVE); 365 if (sc->mem == NULL) { 366 device_printf(dev, "can't map mem space\n"); 367 error = ENOMEM; 368 return error; 369 } 370 sc->sc_st = rman_get_bustag(sc->mem); 371 sc->sc_sh = rman_get_bushandle(sc->mem); 372 373 i = 1; 374 rid = 0; 375 if (pci_alloc_msi(dev, &i) == 0) 376 rid = 1; 377 /* Install interrupt handler. */ 378 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 379 (rid != 0 ? 0 : RF_SHAREABLE)); 380 if (sc->irq == NULL) { 381 device_printf(dev, "can't map interrupt\n"); 382 error = ENOMEM; 383 goto fail; 384 } 385 386 WPI_LOCK_INIT(sc); 387 WPI_TXQ_LOCK_INIT(sc); 388 389 /* Allocate DMA memory for firmware transfers. */ 390 if ((error = wpi_alloc_fwmem(sc)) != 0) { 391 device_printf(dev, 392 "could not allocate memory for firmware, error %d\n", 393 error); 394 goto fail; 395 } 396 397 /* Allocate shared page. */ 398 if ((error = wpi_alloc_shared(sc)) != 0) { 399 device_printf(dev, "could not allocate shared page\n"); 400 goto fail; 401 } 402 403 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 404 for (i = 0; i < WPI_NTXQUEUES; i++) { 405 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 406 device_printf(dev, 407 "could not allocate TX ring %d, error %d\n", i, 408 error); 409 goto fail; 410 } 411 } 412 413 /* Allocate RX ring. */ 414 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 415 device_printf(dev, "could not allocate RX ring, error %d\n", 416 error); 417 goto fail; 418 } 419 420 /* Clear pending interrupts. */ 421 WPI_WRITE(sc, WPI_INT, 0xffffffff); 422 423 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 424 if (ifp == NULL) { 425 device_printf(dev, "can not allocate ifnet structure\n"); 426 goto fail; 427 } 428 429 ic = ifp->if_l2com; 430 ic->ic_ifp = ifp; 431 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 432 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 433 434 /* Set device capabilities. */ 435 ic->ic_caps = 436 IEEE80211_C_STA /* station mode supported */ 437 | IEEE80211_C_IBSS /* IBSS mode supported */ 438 | IEEE80211_C_MONITOR /* monitor mode supported */ 439 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 440 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 441 | IEEE80211_C_TXPMGT /* tx power management */ 442 | IEEE80211_C_SHSLOT /* short slot time supported */ 443 | IEEE80211_C_WPA /* 802.11i */ 444 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 445#if 0 446 | IEEE80211_C_HOSTAP /* Host access point mode */ 447#endif 448 | IEEE80211_C_WME /* 802.11e */ 449 | IEEE80211_C_PMGT /* Station-side power mgmt */ 450 ; 451 452 ic->ic_cryptocaps = 453 IEEE80211_CRYPTO_AES_CCM; 454 455 /* 456 * Read in the eeprom and also setup the channels for 457 * net80211. We don't set the rates as net80211 does this for us 458 */ 459 if ((error = wpi_read_eeprom(sc, macaddr)) != 0) { 460 device_printf(dev, "could not read EEPROM, error %d\n", 461 error); 462 goto fail; 463 } 464 465#ifdef WPI_DEBUG 466 if (bootverbose) { 467 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", 468 sc->domain); 469 device_printf(sc->sc_dev, "Hardware Type: %c\n", 470 sc->type > 1 ? 'B': '?'); 471 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 472 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 473 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 474 supportsa ? "does" : "does not"); 475 476 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must 477 check what sc->rev really represents - benjsc 20070615 */ 478 } 479#endif 480 481 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 482 ifp->if_softc = sc; 483 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 484 ifp->if_init = wpi_init; 485 ifp->if_ioctl = wpi_ioctl; 486 ifp->if_start = wpi_start; 487 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 488 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 489 IFQ_SET_READY(&ifp->if_snd); 490 491 ieee80211_ifattach(ic, macaddr); 492 ic->ic_vap_create = wpi_vap_create; 493 ic->ic_vap_delete = wpi_vap_delete; 494 ic->ic_raw_xmit = wpi_raw_xmit; 495 ic->ic_node_alloc = wpi_node_alloc; 496 sc->sc_node_free = ic->ic_node_free; 497 ic->ic_node_free = wpi_node_free; 498 ic->ic_wme.wme_update = wpi_updateedca; 499 ic->ic_update_promisc = wpi_update_promisc; 500 ic->ic_update_mcast = wpi_update_mcast; 501 ic->ic_scan_start = wpi_scan_start; 502 ic->ic_scan_end = wpi_scan_end; 503 ic->ic_set_channel = wpi_set_channel; 504 sc->sc_scan_curchan = ic->ic_scan_curchan; 505 ic->ic_scan_curchan = wpi_scan_curchan; 506 ic->ic_scan_mindwell = wpi_scan_mindwell; 507 ic->ic_setregdomain = wpi_setregdomain; 508 509 wpi_radiotap_attach(sc); 510 511 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 512 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 513 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 514 TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc); 515 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 516 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 517 518 wpi_sysctlattach(sc); 519 520 /* 521 * Hook our interrupt after all initialization is complete. 522 */ 523 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 524 NULL, wpi_intr, sc, &sc->sc_ih); 525 if (error != 0) { 526 device_printf(dev, "can't establish interrupt, error %d\n", 527 error); 528 goto fail; 529 } 530 531 if (bootverbose) 532 ieee80211_announce(ic); 533 534#ifdef WPI_DEBUG 535 if (sc->sc_debug & WPI_DEBUG_HW) 536 ieee80211_announce_channels(ic); 537#endif 538 539 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 540 return 0; 541 542fail: wpi_detach(dev); 543 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 544 return error; 545} 546 547/* 548 * Attach the interface to 802.11 radiotap. 549 */ 550static void 551wpi_radiotap_attach(struct wpi_softc *sc) 552{ 553 struct ifnet *ifp = sc->sc_ifp; 554 struct ieee80211com *ic = ifp->if_l2com; 555 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 556 ieee80211_radiotap_attach(ic, 557 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 558 WPI_TX_RADIOTAP_PRESENT, 559 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 560 WPI_RX_RADIOTAP_PRESENT); 561 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 562} 563 564static void 565wpi_sysctlattach(struct wpi_softc *sc) 566{ 567#ifdef WPI_DEBUG 568 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 569 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 570 571 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 572 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 573 "control debugging printfs"); 574#endif 575} 576 577static struct ieee80211vap * 578wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 579 enum ieee80211_opmode opmode, int flags, 580 const uint8_t bssid[IEEE80211_ADDR_LEN], 581 const uint8_t mac[IEEE80211_ADDR_LEN]) 582{ 583 struct wpi_vap *wvp; 584 struct wpi_buf *bcn; 585 struct ieee80211vap *vap; 586 587 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 588 return NULL; 589 590 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 591 M_80211_VAP, M_NOWAIT | M_ZERO); 592 if (wvp == NULL) 593 return NULL; 594 vap = &wvp->vap; 595 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 596 597 bcn = &wvp->wv_bcbuf; 598 bcn->data = NULL; 599 600 /* Override with driver methods. */ 601 wvp->newstate = vap->iv_newstate; 602 vap->iv_key_alloc = wpi_key_alloc; 603 vap->iv_key_set = wpi_key_set; 604 vap->iv_key_delete = wpi_key_delete; 605 vap->iv_newstate = wpi_newstate; 606 vap->iv_update_beacon = wpi_update_beacon; 607 608 ieee80211_ratectl_init(vap); 609 /* Complete setup. */ 610 ieee80211_vap_attach(vap, ieee80211_media_change, 611 ieee80211_media_status); 612 ic->ic_opmode = opmode; 613 return vap; 614} 615 616static void 617wpi_vap_delete(struct ieee80211vap *vap) 618{ 619 struct wpi_vap *wvp = WPI_VAP(vap); 620 struct wpi_buf *bcn = &wvp->wv_bcbuf; 621 622 ieee80211_ratectl_deinit(vap); 623 ieee80211_vap_detach(vap); 624 625 if (bcn->data != NULL) 626 free(bcn->data, M_DEVBUF); 627 free(wvp, M_80211_VAP); 628} 629 630static int 631wpi_detach(device_t dev) 632{ 633 struct wpi_softc *sc = device_get_softc(dev); 634 struct ifnet *ifp = sc->sc_ifp; 635 struct ieee80211com *ic; 636 int qid; 637 638 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 639 640 if (ifp != NULL) { 641 ic = ifp->if_l2com; 642 643 ieee80211_draintask(ic, &sc->sc_reinittask); 644 ieee80211_draintask(ic, &sc->sc_radiooff_task); 645 ieee80211_draintask(ic, &sc->sc_radioon_task); 646 647 wpi_stop(sc); 648 649 callout_drain(&sc->watchdog_to); 650 callout_drain(&sc->watchdog_rfkill); 651 callout_drain(&sc->calib_to); 652 ieee80211_ifdetach(ic); 653 } 654 655 /* Uninstall interrupt handler. */ 656 if (sc->irq != NULL) { 657 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 658 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 659 sc->irq); 660 pci_release_msi(dev); 661 } 662 663 if (sc->txq[0].data_dmat) { 664 /* Free DMA resources. */ 665 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 666 wpi_free_tx_ring(sc, &sc->txq[qid]); 667 668 wpi_free_rx_ring(sc); 669 wpi_free_shared(sc); 670 } 671 672 if (sc->fw_dma.tag) 673 wpi_free_fwmem(sc); 674 675 if (sc->mem != NULL) 676 bus_release_resource(dev, SYS_RES_MEMORY, 677 rman_get_rid(sc->mem), sc->mem); 678 679 if (ifp != NULL) 680 if_free(ifp); 681 682 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 683 WPI_TXQ_LOCK_DESTROY(sc); 684 WPI_LOCK_DESTROY(sc); 685 return 0; 686} 687 688static int 689wpi_shutdown(device_t dev) 690{ 691 struct wpi_softc *sc = device_get_softc(dev); 692 693 wpi_stop(sc); 694 return 0; 695} 696 697static int 698wpi_suspend(device_t dev) 699{ 700 struct wpi_softc *sc = device_get_softc(dev); 701 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 702 703 ieee80211_suspend_all(ic); 704 return 0; 705} 706 707static int 708wpi_resume(device_t dev) 709{ 710 struct wpi_softc *sc = device_get_softc(dev); 711 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 712 713 /* Clear device-specific "PCI retry timeout" register (41h). */ 714 pci_write_config(dev, 0x41, 0, 1); 715 716 ieee80211_resume_all(ic); 717 return 0; 718} 719 720/* 721 * Grab exclusive access to NIC memory. 722 */ 723static int 724wpi_nic_lock(struct wpi_softc *sc) 725{ 726 int ntries; 727 728 /* Request exclusive access to NIC. */ 729 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 730 731 /* Spin until we actually get the lock. */ 732 for (ntries = 0; ntries < 1000; ntries++) { 733 if ((WPI_READ(sc, WPI_GP_CNTRL) & 734 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 735 WPI_GP_CNTRL_MAC_ACCESS_ENA) 736 return 0; 737 DELAY(10); 738 } 739 740 device_printf(sc->sc_dev, "could not lock memory\n"); 741 742 return ETIMEDOUT; 743} 744 745/* 746 * Release lock on NIC memory. 747 */ 748static __inline void 749wpi_nic_unlock(struct wpi_softc *sc) 750{ 751 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 752} 753 754static __inline uint32_t 755wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 756{ 757 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 758 WPI_BARRIER_READ_WRITE(sc); 759 return WPI_READ(sc, WPI_PRPH_RDATA); 760} 761 762static __inline void 763wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 764{ 765 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 766 WPI_BARRIER_WRITE(sc); 767 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 768} 769 770static __inline void 771wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 772{ 773 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 774} 775 776static __inline void 777wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 778{ 779 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 780} 781 782static __inline void 783wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 784 const uint32_t *data, int count) 785{ 786 for (; count > 0; count--, data++, addr += 4) 787 wpi_prph_write(sc, addr, *data); 788} 789 790static __inline uint32_t 791wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 792{ 793 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 794 WPI_BARRIER_READ_WRITE(sc); 795 return WPI_READ(sc, WPI_MEM_RDATA); 796} 797 798static __inline void 799wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 800 int count) 801{ 802 for (; count > 0; count--, addr += 4) 803 *data++ = wpi_mem_read(sc, addr); 804} 805 806static int 807wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 808{ 809 uint8_t *out = data; 810 uint32_t val; 811 int error, ntries; 812 813 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 814 815 if ((error = wpi_nic_lock(sc)) != 0) 816 return error; 817 818 for (; count > 0; count -= 2, addr++) { 819 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 820 for (ntries = 0; ntries < 10; ntries++) { 821 val = WPI_READ(sc, WPI_EEPROM); 822 if (val & WPI_EEPROM_READ_VALID) 823 break; 824 DELAY(5); 825 } 826 if (ntries == 10) { 827 device_printf(sc->sc_dev, 828 "timeout reading ROM at 0x%x\n", addr); 829 return ETIMEDOUT; 830 } 831 *out++= val >> 16; 832 if (count > 1) 833 *out ++= val >> 24; 834 } 835 836 wpi_nic_unlock(sc); 837 838 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 839 840 return 0; 841} 842 843static void 844wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 845{ 846 if (error != 0) 847 return; 848 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 849 *(bus_addr_t *)arg = segs[0].ds_addr; 850} 851 852/* 853 * Allocates a contiguous block of dma memory of the requested size and 854 * alignment. 855 */ 856static int 857wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 858 void **kvap, bus_size_t size, bus_size_t alignment) 859{ 860 int error; 861 862 dma->tag = NULL; 863 dma->size = size; 864 865 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 866 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 867 1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag); 868 if (error != 0) 869 goto fail; 870 871 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 872 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 873 if (error != 0) 874 goto fail; 875 876 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 877 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 878 if (error != 0) 879 goto fail; 880 881 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 882 883 if (kvap != NULL) 884 *kvap = dma->vaddr; 885 886 return 0; 887 888fail: wpi_dma_contig_free(dma); 889 return error; 890} 891 892static void 893wpi_dma_contig_free(struct wpi_dma_info *dma) 894{ 895 if (dma->vaddr != NULL) { 896 bus_dmamap_sync(dma->tag, dma->map, 897 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 898 bus_dmamap_unload(dma->tag, dma->map); 899 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 900 dma->vaddr = NULL; 901 } 902 if (dma->tag != NULL) { 903 bus_dma_tag_destroy(dma->tag); 904 dma->tag = NULL; 905 } 906} 907 908/* 909 * Allocate a shared page between host and NIC. 910 */ 911static int 912wpi_alloc_shared(struct wpi_softc *sc) 913{ 914 /* Shared buffer must be aligned on a 4KB boundary. */ 915 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 916 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 917} 918 919static void 920wpi_free_shared(struct wpi_softc *sc) 921{ 922 wpi_dma_contig_free(&sc->shared_dma); 923} 924 925/* 926 * Allocate DMA-safe memory for firmware transfer. 927 */ 928static int 929wpi_alloc_fwmem(struct wpi_softc *sc) 930{ 931 /* Must be aligned on a 16-byte boundary. */ 932 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 933 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 934} 935 936static void 937wpi_free_fwmem(struct wpi_softc *sc) 938{ 939 wpi_dma_contig_free(&sc->fw_dma); 940} 941 942static int 943wpi_alloc_rx_ring(struct wpi_softc *sc) 944{ 945 struct wpi_rx_ring *ring = &sc->rxq; 946 bus_size_t size; 947 int i, error; 948 949 ring->cur = 0; 950 ring->update = 0; 951 952 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 953 954 /* Allocate RX descriptors (16KB aligned.) */ 955 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 956 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 957 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 958 if (error != 0) { 959 device_printf(sc->sc_dev, 960 "%s: could not allocate RX ring DMA memory, error %d\n", 961 __func__, error); 962 goto fail; 963 } 964 965 /* Create RX buffer DMA tag. */ 966 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 967 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 968 MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, 969 &ring->data_dmat); 970 if (error != 0) { 971 device_printf(sc->sc_dev, 972 "%s: could not create RX buf DMA tag, error %d\n", 973 __func__, error); 974 goto fail; 975 } 976 977 /* 978 * Allocate and map RX buffers. 979 */ 980 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 981 struct wpi_rx_data *data = &ring->data[i]; 982 bus_addr_t paddr; 983 984 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 985 if (error != 0) { 986 device_printf(sc->sc_dev, 987 "%s: could not create RX buf DMA map, error %d\n", 988 __func__, error); 989 goto fail; 990 } 991 992 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 993 if (data->m == NULL) { 994 device_printf(sc->sc_dev, 995 "%s: could not allocate RX mbuf\n", __func__); 996 error = ENOBUFS; 997 goto fail; 998 } 999 1000 error = bus_dmamap_load(ring->data_dmat, data->map, 1001 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1002 &paddr, BUS_DMA_NOWAIT); 1003 if (error != 0 && error != EFBIG) { 1004 device_printf(sc->sc_dev, 1005 "%s: can't map mbuf (error %d)\n", __func__, 1006 error); 1007 goto fail; 1008 } 1009 1010 /* Set physical address of RX buffer. */ 1011 ring->desc[i] = htole32(paddr); 1012 } 1013 1014 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1015 BUS_DMASYNC_PREWRITE); 1016 1017 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1018 1019 return 0; 1020 1021fail: wpi_free_rx_ring(sc); 1022 1023 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1024 1025 return error; 1026} 1027 1028static void 1029wpi_update_rx_ring(struct wpi_softc *sc) 1030{ 1031 struct wpi_rx_ring *ring = &sc->rxq; 1032 1033 if (ring->update != 0) { 1034 /* Wait for INT_WAKEUP event. */ 1035 return; 1036 } 1037 1038 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1039 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1040 __func__); 1041 1042 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1043 ring->update = 1; 1044 } else 1045 WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7); 1046} 1047 1048static void 1049wpi_reset_rx_ring(struct wpi_softc *sc) 1050{ 1051 struct wpi_rx_ring *ring = &sc->rxq; 1052 int ntries; 1053 1054 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1055 1056 if (wpi_nic_lock(sc) == 0) { 1057 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1058 for (ntries = 0; ntries < 1000; ntries++) { 1059 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1060 WPI_FH_RX_STATUS_IDLE) 1061 break; 1062 DELAY(10); 1063 } 1064#ifdef WPI_DEBUG 1065 if (ntries == 1000) { 1066 device_printf(sc->sc_dev, 1067 "timeout resetting Rx ring\n"); 1068 } 1069#endif 1070 wpi_nic_unlock(sc); 1071 } 1072 1073 ring->cur = 0; 1074 ring->update = 0; 1075} 1076 1077static void 1078wpi_free_rx_ring(struct wpi_softc *sc) 1079{ 1080 struct wpi_rx_ring *ring = &sc->rxq; 1081 int i; 1082 1083 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1084 1085 wpi_dma_contig_free(&ring->desc_dma); 1086 1087 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1088 struct wpi_rx_data *data = &ring->data[i]; 1089 1090 if (data->m != NULL) { 1091 bus_dmamap_sync(ring->data_dmat, data->map, 1092 BUS_DMASYNC_POSTREAD); 1093 bus_dmamap_unload(ring->data_dmat, data->map); 1094 m_freem(data->m); 1095 data->m = NULL; 1096 } 1097 if (data->map != NULL) 1098 bus_dmamap_destroy(ring->data_dmat, data->map); 1099 } 1100 if (ring->data_dmat != NULL) { 1101 bus_dma_tag_destroy(ring->data_dmat); 1102 ring->data_dmat = NULL; 1103 } 1104} 1105 1106static int 1107wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid) 1108{ 1109 bus_addr_t paddr; 1110 bus_size_t size; 1111 int i, error; 1112 1113 ring->qid = qid; 1114 ring->queued = 0; 1115 ring->cur = 0; 1116 ring->update = 0; 1117 1118 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1119 1120 /* Allocate TX descriptors (16KB aligned.) */ 1121 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1122 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1123 size, WPI_RING_DMA_ALIGN); 1124 if (error != 0) { 1125 device_printf(sc->sc_dev, 1126 "%s: could not allocate TX ring DMA memory, error %d\n", 1127 __func__, error); 1128 goto fail; 1129 } 1130 1131 /* Update shared area with ring physical address. */ 1132 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1133 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1134 BUS_DMASYNC_PREWRITE); 1135 1136 /* 1137 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need 1138 * to allocate commands space for other rings. 1139 * XXX Do we really need to allocate descriptors for other rings? 1140 */ 1141 if (qid > WPI_CMD_QUEUE_NUM) 1142 return 0; 1143 1144 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1145 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1146 size, 4); 1147 if (error != 0) { 1148 device_printf(sc->sc_dev, 1149 "%s: could not allocate TX cmd DMA memory, error %d\n", 1150 __func__, error); 1151 goto fail; 1152 } 1153 1154 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1155 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1156 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1157 &ring->data_dmat); 1158 if (error != 0) { 1159 device_printf(sc->sc_dev, 1160 "%s: could not create TX buf DMA tag, error %d\n", 1161 __func__, error); 1162 goto fail; 1163 } 1164 1165 paddr = ring->cmd_dma.paddr; 1166 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1167 struct wpi_tx_data *data = &ring->data[i]; 1168 1169 data->cmd_paddr = paddr; 1170 paddr += sizeof (struct wpi_tx_cmd); 1171 1172 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1173 if (error != 0) { 1174 device_printf(sc->sc_dev, 1175 "%s: could not create TX buf DMA map, error %d\n", 1176 __func__, error); 1177 goto fail; 1178 } 1179 } 1180 1181 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1182 1183 return 0; 1184 1185fail: wpi_free_tx_ring(sc, ring); 1186 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1187 return error; 1188} 1189 1190static void 1191wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1192{ 1193 if (ring->update != 0) { 1194 /* Wait for INT_WAKEUP event. */ 1195 return; 1196 } 1197 1198 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1199 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1200 __func__, ring->qid); 1201 1202 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1203 ring->update = 1; 1204 } else 1205 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1206} 1207 1208static void 1209wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1210{ 1211 int i; 1212 1213 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1214 1215 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1216 struct wpi_tx_data *data = &ring->data[i]; 1217 1218 if (data->m != NULL) { 1219 bus_dmamap_sync(ring->data_dmat, data->map, 1220 BUS_DMASYNC_POSTWRITE); 1221 bus_dmamap_unload(ring->data_dmat, data->map); 1222 m_freem(data->m); 1223 data->m = NULL; 1224 } 1225 } 1226 /* Clear TX descriptors. */ 1227 memset(ring->desc, 0, ring->desc_dma.size); 1228 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1229 BUS_DMASYNC_PREWRITE); 1230 sc->qfullmsk &= ~(1 << ring->qid); 1231 ring->queued = 0; 1232 ring->cur = 0; 1233 ring->update = 0; 1234} 1235 1236static void 1237wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1238{ 1239 int i; 1240 1241 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1242 1243 wpi_dma_contig_free(&ring->desc_dma); 1244 wpi_dma_contig_free(&ring->cmd_dma); 1245 1246 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1247 struct wpi_tx_data *data = &ring->data[i]; 1248 1249 if (data->m != NULL) { 1250 bus_dmamap_sync(ring->data_dmat, data->map, 1251 BUS_DMASYNC_POSTWRITE); 1252 bus_dmamap_unload(ring->data_dmat, data->map); 1253 m_freem(data->m); 1254 } 1255 if (data->map != NULL) 1256 bus_dmamap_destroy(ring->data_dmat, data->map); 1257 } 1258 if (ring->data_dmat != NULL) { 1259 bus_dma_tag_destroy(ring->data_dmat); 1260 ring->data_dmat = NULL; 1261 } 1262} 1263 1264/* 1265 * Extract various information from EEPROM. 1266 */ 1267static int 1268wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 1269{ 1270#define WPI_CHK(res) do { \ 1271 if ((error = res) != 0) \ 1272 goto fail; \ 1273} while (0) 1274 int error, i; 1275 1276 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1277 1278 /* Adapter has to be powered on for EEPROM access to work. */ 1279 if ((error = wpi_apm_init(sc)) != 0) { 1280 device_printf(sc->sc_dev, 1281 "%s: could not power ON adapter, error %d\n", __func__, 1282 error); 1283 return error; 1284 } 1285 1286 if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) { 1287 device_printf(sc->sc_dev, "bad EEPROM signature\n"); 1288 error = EIO; 1289 goto fail; 1290 } 1291 /* Clear HW ownership of EEPROM. */ 1292 WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER); 1293 1294 /* Read the hardware capabilities, revision and SKU type. */ 1295 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap, 1296 sizeof(sc->cap))); 1297 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 1298 sizeof(sc->rev))); 1299 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1300 sizeof(sc->type))); 1301 1302 DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, 1303 le16toh(sc->rev), sc->type); 1304 1305 /* Read the regulatory domain (4 ASCII characters.) */ 1306 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 1307 sizeof(sc->domain))); 1308 1309 /* Read MAC address. */ 1310 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 1311 IEEE80211_ADDR_LEN)); 1312 1313 /* Read the list of authorized channels. */ 1314 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 1315 WPI_CHK(wpi_read_eeprom_channels(sc, i)); 1316 1317 /* Read the list of TX power groups. */ 1318 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 1319 WPI_CHK(wpi_read_eeprom_group(sc, i)); 1320 1321fail: wpi_apm_stop(sc); /* Power OFF adapter. */ 1322 1323 DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 1324 __func__); 1325 1326 return error; 1327#undef WPI_CHK 1328} 1329 1330/* 1331 * Translate EEPROM flags to net80211. 1332 */ 1333static uint32_t 1334wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel) 1335{ 1336 uint32_t nflags; 1337 1338 nflags = 0; 1339 if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0) 1340 nflags |= IEEE80211_CHAN_PASSIVE; 1341 if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0) 1342 nflags |= IEEE80211_CHAN_NOADHOC; 1343 if (channel->flags & WPI_EEPROM_CHAN_RADAR) { 1344 nflags |= IEEE80211_CHAN_DFS; 1345 /* XXX apparently IBSS may still be marked */ 1346 nflags |= IEEE80211_CHAN_NOADHOC; 1347 } 1348 1349 return nflags; 1350} 1351 1352static void 1353wpi_read_eeprom_band(struct wpi_softc *sc, int n) 1354{ 1355 struct ifnet *ifp = sc->sc_ifp; 1356 struct ieee80211com *ic = ifp->if_l2com; 1357 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1358 const struct wpi_chan_band *band = &wpi_bands[n]; 1359 struct ieee80211_channel *c; 1360 uint8_t chan; 1361 int i, nflags; 1362 1363 for (i = 0; i < band->nchan; i++) { 1364 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1365 DPRINTF(sc, WPI_DEBUG_HW, 1366 "Channel Not Valid: %d, band %d\n", 1367 band->chan[i],n); 1368 continue; 1369 } 1370 1371 chan = band->chan[i]; 1372 nflags = wpi_eeprom_channel_flags(&channels[i]); 1373 1374 c = &ic->ic_channels[ic->ic_nchans++]; 1375 c->ic_ieee = chan; 1376 c->ic_maxregpower = channels[i].maxpwr; 1377 c->ic_maxpower = 2*c->ic_maxregpower; 1378 1379 if (n == 0) { /* 2GHz band */ 1380 c->ic_freq = ieee80211_ieee2mhz(chan, 1381 IEEE80211_CHAN_G); 1382 1383 /* G =>'s B is supported */ 1384 c->ic_flags = IEEE80211_CHAN_B | nflags; 1385 c = &ic->ic_channels[ic->ic_nchans++]; 1386 c[0] = c[-1]; 1387 c->ic_flags = IEEE80211_CHAN_G | nflags; 1388 } else { /* 5GHz band */ 1389 c->ic_freq = ieee80211_ieee2mhz(chan, 1390 IEEE80211_CHAN_A); 1391 1392 c->ic_flags = IEEE80211_CHAN_A | nflags; 1393 } 1394 1395 /* Save maximum allowed TX power for this channel. */ 1396 sc->maxpwr[chan] = channels[i].maxpwr; 1397 1398 DPRINTF(sc, WPI_DEBUG_EEPROM, 1399 "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d," 1400 " offset %d\n", chan, c->ic_freq, 1401 channels[i].flags, sc->maxpwr[chan], 1402 IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans); 1403 } 1404} 1405 1406/** 1407 * Read the eeprom to find out what channels are valid for the given 1408 * band and update net80211 with what we find. 1409 */ 1410static int 1411wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 1412{ 1413 struct ifnet *ifp = sc->sc_ifp; 1414 struct ieee80211com *ic = ifp->if_l2com; 1415 const struct wpi_chan_band *band = &wpi_bands[n]; 1416 int error; 1417 1418 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1419 1420 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1421 band->nchan * sizeof (struct wpi_eeprom_chan)); 1422 if (error != 0) { 1423 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1424 return error; 1425 } 1426 1427 wpi_read_eeprom_band(sc, n); 1428 1429 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1430 1431 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1432 1433 return 0; 1434} 1435 1436static struct wpi_eeprom_chan * 1437wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1438{ 1439 int i, j; 1440 1441 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1442 for (i = 0; i < wpi_bands[j].nchan; i++) 1443 if (wpi_bands[j].chan[i] == c->ic_ieee) 1444 return &sc->eeprom_channels[j][i]; 1445 1446 return NULL; 1447} 1448 1449/* 1450 * Enforce flags read from EEPROM. 1451 */ 1452static int 1453wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1454 int nchan, struct ieee80211_channel chans[]) 1455{ 1456 struct ifnet *ifp = ic->ic_ifp; 1457 struct wpi_softc *sc = ifp->if_softc; 1458 int i; 1459 1460 for (i = 0; i < nchan; i++) { 1461 struct ieee80211_channel *c = &chans[i]; 1462 struct wpi_eeprom_chan *channel; 1463 1464 channel = wpi_find_eeprom_channel(sc, c); 1465 if (channel == NULL) { 1466 if_printf(ic->ic_ifp, 1467 "%s: invalid channel %u freq %u/0x%x\n", 1468 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1469 return EINVAL; 1470 } 1471 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1472 } 1473 1474 return 0; 1475} 1476 1477static int 1478wpi_read_eeprom_group(struct wpi_softc *sc, int n) 1479{ 1480 struct wpi_power_group *group = &sc->groups[n]; 1481 struct wpi_eeprom_group rgroup; 1482 int i, error; 1483 1484 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1485 1486 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1487 &rgroup, sizeof rgroup)) != 0) { 1488 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1489 return error; 1490 } 1491 1492 /* Save TX power group information. */ 1493 group->chan = rgroup.chan; 1494 group->maxpwr = rgroup.maxpwr; 1495 /* Retrieve temperature at which the samples were taken. */ 1496 group->temp = (int16_t)le16toh(rgroup.temp); 1497 1498 DPRINTF(sc, WPI_DEBUG_EEPROM, 1499 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1500 group->maxpwr, group->temp); 1501 1502 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1503 group->samples[i].index = rgroup.samples[i].index; 1504 group->samples[i].power = rgroup.samples[i].power; 1505 1506 DPRINTF(sc, WPI_DEBUG_EEPROM, 1507 "\tsample %d: index=%d power=%d\n", i, 1508 group->samples[i].index, group->samples[i].power); 1509 } 1510 1511 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1512 1513 return 0; 1514} 1515 1516static int 1517wpi_add_node_entry_adhoc(struct wpi_softc *sc) 1518{ 1519 int newid = WPI_ID_IBSS_MIN; 1520 1521 for (; newid <= WPI_ID_IBSS_MAX; newid++) { 1522 if ((sc->nodesmsk & (1 << newid)) == 0) { 1523 sc->nodesmsk |= 1 << newid; 1524 return newid; 1525 } 1526 } 1527 1528 return WPI_ID_UNDEFINED; 1529} 1530 1531static __inline int 1532wpi_add_node_entry_sta(struct wpi_softc *sc) 1533{ 1534 sc->nodesmsk |= 1 << WPI_ID_BSS; 1535 1536 return WPI_ID_BSS; 1537} 1538 1539static __inline int 1540wpi_check_node_entry(struct wpi_softc *sc, uint8_t id) 1541{ 1542 if (id == WPI_ID_UNDEFINED) 1543 return 0; 1544 1545 return (sc->nodesmsk >> id) & 1; 1546} 1547 1548static __inline void 1549wpi_clear_node_table(struct wpi_softc *sc) 1550{ 1551 sc->nodesmsk = 0; 1552} 1553 1554static __inline void 1555wpi_del_node_entry(struct wpi_softc *sc, uint8_t id) 1556{ 1557 sc->nodesmsk &= ~(1 << id); 1558} 1559 1560static struct ieee80211_node * 1561wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1562{ 1563 struct wpi_node *wn; 1564 1565 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1566 M_NOWAIT | M_ZERO); 1567 1568 if (wn == NULL) 1569 return NULL; 1570 1571 wn->id = WPI_ID_UNDEFINED; 1572 1573 return &wn->ni; 1574} 1575 1576static void 1577wpi_node_free(struct ieee80211_node *ni) 1578{ 1579 struct ieee80211com *ic = ni->ni_ic; 1580 struct wpi_softc *sc = ic->ic_ifp->if_softc; 1581 struct wpi_node *wn = WPI_NODE(ni); 1582 1583 if (wn->id != WPI_ID_UNDEFINED) { 1584 WPI_LOCK(sc); 1585 if (wpi_check_node_entry(sc, wn->id)) { 1586 wpi_del_node_entry(sc, wn->id); 1587 wpi_del_node(sc, ni); 1588 } 1589 WPI_UNLOCK(sc); 1590 } 1591 1592 sc->sc_node_free(ni); 1593} 1594 1595/** 1596 * Called by net80211 when ever there is a change to 80211 state machine 1597 */ 1598static int 1599wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1600{ 1601 struct wpi_vap *wvp = WPI_VAP(vap); 1602 struct ieee80211com *ic = vap->iv_ic; 1603 struct ifnet *ifp = ic->ic_ifp; 1604 struct wpi_softc *sc = ifp->if_softc; 1605 int error = 0; 1606 1607 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1608 1609 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1610 ieee80211_state_name[vap->iv_state], 1611 ieee80211_state_name[nstate]); 1612 1613 IEEE80211_UNLOCK(ic); 1614 WPI_LOCK(sc); 1615 switch (nstate) { 1616 case IEEE80211_S_SCAN: 1617 if ((vap->iv_opmode == IEEE80211_M_IBSS || 1618 vap->iv_opmode == IEEE80211_M_AHDEMO) && 1619 (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 1620 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1621 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1622 device_printf(sc->sc_dev, 1623 "%s: could not send RXON\n", __func__); 1624 } 1625 } 1626 break; 1627 1628 case IEEE80211_S_ASSOC: 1629 if (vap->iv_state != IEEE80211_S_RUN) 1630 break; 1631 /* FALLTHROUGH */ 1632 case IEEE80211_S_AUTH: 1633 /* 1634 * The node must be registered in the firmware before auth. 1635 * Also the associd must be cleared on RUN -> ASSOC 1636 * transitions. 1637 */ 1638 if ((error = wpi_auth(sc, vap)) != 0) { 1639 device_printf(sc->sc_dev, 1640 "%s: could not move to AUTH state, error %d\n", 1641 __func__, error); 1642 } 1643 break; 1644 1645 case IEEE80211_S_RUN: 1646 /* 1647 * RUN -> RUN transition; Just restart the timers. 1648 */ 1649 if (vap->iv_state == IEEE80211_S_RUN) { 1650 wpi_calib_timeout(sc); 1651 break; 1652 } 1653 1654 /* 1655 * !RUN -> RUN requires setting the association id 1656 * which is done with a firmware cmd. We also defer 1657 * starting the timers until that work is done. 1658 */ 1659 if ((error = wpi_run(sc, vap)) != 0) { 1660 device_printf(sc->sc_dev, 1661 "%s: could not move to RUN state\n", __func__); 1662 } 1663 break; 1664 1665 default: 1666 break; 1667 } 1668 WPI_UNLOCK(sc); 1669 IEEE80211_LOCK(ic); 1670 if (error != 0) { 1671 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1672 return error; 1673 } 1674 1675 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1676 1677 return wvp->newstate(vap, nstate, arg); 1678} 1679 1680static void 1681wpi_calib_timeout(void *arg) 1682{ 1683 struct wpi_softc *sc = arg; 1684 struct ifnet *ifp = sc->sc_ifp; 1685 struct ieee80211com *ic = ifp->if_l2com; 1686 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1687 1688 if (vap->iv_state != IEEE80211_S_RUN) 1689 return; 1690 1691 wpi_power_calibration(sc); 1692 1693 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1694} 1695 1696static __inline uint8_t 1697rate2plcp(const uint8_t rate) 1698{ 1699 switch (rate) { 1700 case 12: return 0xd; 1701 case 18: return 0xf; 1702 case 24: return 0x5; 1703 case 36: return 0x7; 1704 case 48: return 0x9; 1705 case 72: return 0xb; 1706 case 96: return 0x1; 1707 case 108: return 0x3; 1708 case 2: return 10; 1709 case 4: return 20; 1710 case 11: return 55; 1711 case 22: return 110; 1712 default: return 0; 1713 } 1714} 1715 1716static __inline uint8_t 1717plcp2rate(const uint8_t plcp) 1718{ 1719 switch (plcp) { 1720 case 0xd: return 12; 1721 case 0xf: return 18; 1722 case 0x5: return 24; 1723 case 0x7: return 36; 1724 case 0x9: return 48; 1725 case 0xb: return 72; 1726 case 0x1: return 96; 1727 case 0x3: return 108; 1728 case 10: return 2; 1729 case 20: return 4; 1730 case 55: return 11; 1731 case 110: return 22; 1732 default: return 0; 1733 } 1734} 1735 1736/* Quickly determine if a given rate is CCK or OFDM. */ 1737#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1738 1739static void 1740wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1741 struct wpi_rx_data *data) 1742{ 1743 struct ifnet *ifp = sc->sc_ifp; 1744 const struct ieee80211_cipher *cip = NULL; 1745 struct ieee80211com *ic = ifp->if_l2com; 1746 struct wpi_rx_ring *ring = &sc->rxq; 1747 struct wpi_rx_stat *stat; 1748 struct wpi_rx_head *head; 1749 struct wpi_rx_tail *tail; 1750 struct ieee80211_frame *wh; 1751 struct ieee80211_node *ni; 1752 struct mbuf *m, *m1; 1753 bus_addr_t paddr; 1754 uint32_t flags; 1755 uint16_t len; 1756 int error; 1757 1758 stat = (struct wpi_rx_stat *)(desc + 1); 1759 1760 if (stat->len > WPI_STAT_MAXLEN) { 1761 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1762 goto fail1; 1763 } 1764 1765 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1766 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1767 len = le16toh(head->len); 1768 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1769 flags = le32toh(tail->flags); 1770 1771 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1772 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1773 le32toh(desc->len), len, (int8_t)stat->rssi, 1774 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1775 1776 /* Discard frames with a bad FCS early. */ 1777 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1778 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1779 __func__, flags); 1780 goto fail1; 1781 } 1782 /* Discard frames that are too short. */ 1783 if (len < sizeof (*wh)) { 1784 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1785 __func__, len); 1786 goto fail1; 1787 } 1788 1789 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1790 if (m1 == NULL) { 1791 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1792 __func__); 1793 goto fail1; 1794 } 1795 bus_dmamap_unload(ring->data_dmat, data->map); 1796 1797 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1798 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1799 if (error != 0 && error != EFBIG) { 1800 device_printf(sc->sc_dev, 1801 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1802 m_freem(m1); 1803 1804 /* Try to reload the old mbuf. */ 1805 error = bus_dmamap_load(ring->data_dmat, data->map, 1806 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1807 &paddr, BUS_DMA_NOWAIT); 1808 if (error != 0 && error != EFBIG) { 1809 panic("%s: could not load old RX mbuf", __func__); 1810 } 1811 /* Physical address may have changed. */ 1812 ring->desc[ring->cur] = htole32(paddr); 1813 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1814 BUS_DMASYNC_PREWRITE); 1815 goto fail1; 1816 } 1817 1818 m = data->m; 1819 data->m = m1; 1820 /* Update RX descriptor. */ 1821 ring->desc[ring->cur] = htole32(paddr); 1822 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1823 BUS_DMASYNC_PREWRITE); 1824 1825 /* Finalize mbuf. */ 1826 m->m_pkthdr.rcvif = ifp; 1827 m->m_data = (caddr_t)(head + 1); 1828 m->m_pkthdr.len = m->m_len = len; 1829 1830 /* Grab a reference to the source node. */ 1831 wh = mtod(m, struct ieee80211_frame *); 1832 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1833 1834 if (ni != NULL) 1835 cip = ni->ni_ucastkey.wk_cipher; 1836 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 1837 !IEEE80211_IS_MULTICAST(wh->i_addr1) && 1838 cip != NULL && cip->ic_cipher == IEEE80211_CIPHER_AES_CCM) { 1839 if ((flags & WPI_RX_CIPHER_MASK) != WPI_RX_CIPHER_CCMP) 1840 goto fail2; 1841 1842 /* Check whether decryption was successful or not. */ 1843 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 1844 DPRINTF(sc, WPI_DEBUG_RECV, 1845 "CCMP decryption failed 0x%x\n", flags); 1846 goto fail2; 1847 } 1848 m->m_flags |= M_WEP; 1849 } 1850 1851 if (ieee80211_radiotap_active(ic)) { 1852 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1853 1854 tap->wr_flags = 0; 1855 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 1856 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1857 tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET); 1858 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1859 tap->wr_tsft = tail->tstamp; 1860 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1861 tap->wr_rate = plcp2rate(head->plcp); 1862 } 1863 1864 WPI_UNLOCK(sc); 1865 1866 /* Send the frame to the 802.11 layer. */ 1867 if (ni != NULL) { 1868 (void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET); 1869 /* Node is no longer needed. */ 1870 ieee80211_free_node(ni); 1871 } else 1872 (void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET); 1873 1874 WPI_LOCK(sc); 1875 1876 return; 1877 1878fail2: ieee80211_free_node(ni); 1879 m_freem(m); 1880 1881fail1: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1882} 1883 1884static void 1885wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1886 struct wpi_rx_data *data) 1887{ 1888 /* Ignore */ 1889} 1890 1891static void 1892wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1893{ 1894 struct ifnet *ifp = sc->sc_ifp; 1895 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1896 struct wpi_tx_data *data = &ring->data[desc->idx]; 1897 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1898 struct mbuf *m; 1899 struct ieee80211_node *ni; 1900 struct ieee80211vap *vap; 1901 int ackfailcnt = stat->ackfailcnt / 2; /* wpi_mrr_setup() */ 1902 int status = le32toh(stat->status); 1903 1904 KASSERT(data->ni != NULL, ("no node")); 1905 1906 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1907 1908 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 1909 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 1910 "status %x\n", __func__, desc->qid, desc->idx, ackfailcnt, 1911 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 1912 1913 /* Unmap and free mbuf. */ 1914 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1915 bus_dmamap_unload(ring->data_dmat, data->map); 1916 m = data->m, data->m = NULL; 1917 ni = data->ni, data->ni = NULL; 1918 vap = ni->ni_vap; 1919 1920 /* 1921 * Update rate control statistics for the node. 1922 */ 1923 WPI_UNLOCK(sc); 1924 if ((status & 0xff) != 1) { 1925 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1926 ieee80211_ratectl_tx_complete(vap, ni, 1927 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 1928 } else { 1929 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1930 ieee80211_ratectl_tx_complete(vap, ni, 1931 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 1932 } 1933 1934 ieee80211_tx_complete(ni, m, (status & 0xff) != 1); 1935 WPI_LOCK(sc); 1936 1937 sc->sc_tx_timer = 0; 1938 if (--ring->queued < WPI_TX_RING_LOMARK) { 1939 sc->qfullmsk &= ~(1 << ring->qid); 1940 if (sc->qfullmsk == 0 && 1941 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 1942 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1943 wpi_start_locked(ifp); 1944 } 1945 } 1946 1947 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1948} 1949 1950/* 1951 * Process a "command done" firmware notification. This is where we wakeup 1952 * processes waiting for a synchronous command completion. 1953 */ 1954static void 1955wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1956{ 1957 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 1958 struct wpi_tx_data *data; 1959 1960 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid=%x idx=%d flags=%x " 1961 "type=%s len=%d\n", desc->qid, desc->idx, 1962 desc->flags, wpi_cmd_str(desc->type), 1963 le32toh(desc->len)); 1964 1965 if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM) 1966 return; /* Not a command ack. */ 1967 1968 data = &ring->data[desc->idx]; 1969 1970 /* If the command was mapped in an mbuf, free it. */ 1971 if (data->m != NULL) { 1972 bus_dmamap_sync(ring->data_dmat, data->map, 1973 BUS_DMASYNC_POSTWRITE); 1974 bus_dmamap_unload(ring->data_dmat, data->map); 1975 m_freem(data->m); 1976 data->m = NULL; 1977 } 1978 1979 wakeup(&ring->cmd[desc->idx]); 1980} 1981 1982static void 1983wpi_notif_intr(struct wpi_softc *sc) 1984{ 1985 struct ifnet *ifp = sc->sc_ifp; 1986 struct ieee80211com *ic = ifp->if_l2com; 1987 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1988 int hw; 1989 1990 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1991 BUS_DMASYNC_POSTREAD); 1992 1993 hw = le32toh(sc->shared->next); 1994 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1995 1996 while (sc->rxq.cur != hw) { 1997 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1998 1999 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 2000 struct wpi_rx_desc *desc; 2001 2002 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2003 BUS_DMASYNC_POSTREAD); 2004 desc = mtod(data->m, struct wpi_rx_desc *); 2005 2006 DPRINTF(sc, WPI_DEBUG_NOTIFY, 2007 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 2008 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 2009 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 2010 2011 if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) { 2012 /* Reply to a command. */ 2013 wpi_cmd_done(sc, desc); 2014 } 2015 2016 switch (desc->type) { 2017 case WPI_RX_DONE: 2018 /* An 802.11 frame has been received. */ 2019 wpi_rx_done(sc, desc, data); 2020 2021 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2022 /* wpi_stop() was called. */ 2023 return; 2024 } 2025 2026 break; 2027 2028 case WPI_TX_DONE: 2029 /* An 802.11 frame has been transmitted. */ 2030 wpi_tx_done(sc, desc); 2031 break; 2032 2033 case WPI_RX_STATISTICS: 2034 case WPI_BEACON_STATISTICS: 2035 wpi_rx_statistics(sc, desc, data); 2036 break; 2037 2038 case WPI_BEACON_MISSED: 2039 { 2040 struct wpi_beacon_missed *miss = 2041 (struct wpi_beacon_missed *)(desc + 1); 2042 int misses; 2043 2044 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2045 BUS_DMASYNC_POSTREAD); 2046 misses = le32toh(miss->consecutive); 2047 2048 DPRINTF(sc, WPI_DEBUG_STATE, 2049 "%s: beacons missed %d/%d\n", __func__, misses, 2050 le32toh(miss->total)); 2051 2052 if (vap->iv_state == IEEE80211_S_RUN && 2053 (ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2054 if (misses >= vap->iv_bmissthreshold) { 2055 WPI_UNLOCK(sc); 2056 ieee80211_beacon_miss(ic); 2057 WPI_LOCK(sc); 2058 } 2059 } 2060 break; 2061 } 2062 case WPI_UC_READY: 2063 { 2064 struct wpi_ucode_info *uc = 2065 (struct wpi_ucode_info *)(desc + 1); 2066 2067 /* The microcontroller is ready. */ 2068 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2069 BUS_DMASYNC_POSTREAD); 2070 DPRINTF(sc, WPI_DEBUG_RESET, 2071 "microcode alive notification version=%d.%d " 2072 "subtype=%x alive=%x\n", uc->major, uc->minor, 2073 uc->subtype, le32toh(uc->valid)); 2074 2075 if (le32toh(uc->valid) != 1) { 2076 device_printf(sc->sc_dev, 2077 "microcontroller initialization failed\n"); 2078 wpi_stop_locked(sc); 2079 } 2080 /* Save the address of the error log in SRAM. */ 2081 sc->errptr = le32toh(uc->errptr); 2082 break; 2083 } 2084 case WPI_STATE_CHANGED: 2085 { 2086 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2087 BUS_DMASYNC_POSTREAD); 2088 2089 uint32_t *status = (uint32_t *)(desc + 1); 2090 2091 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2092 le32toh(*status)); 2093 2094 if (le32toh(*status) & 1) { 2095 wpi_clear_node_table(sc); 2096 ieee80211_runtask(ic, &sc->sc_radiooff_task); 2097 return; 2098 } 2099 break; 2100 } 2101 case WPI_START_SCAN: 2102 { 2103 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2104 BUS_DMASYNC_POSTREAD); 2105#ifdef WPI_DEBUG 2106 struct wpi_start_scan *scan = 2107 (struct wpi_start_scan *)(desc + 1); 2108 DPRINTF(sc, WPI_DEBUG_SCAN, 2109 "%s: scanning channel %d status %x\n", 2110 __func__, scan->chan, le32toh(scan->status)); 2111#endif 2112 break; 2113 } 2114 case WPI_STOP_SCAN: 2115 { 2116 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2117 BUS_DMASYNC_POSTREAD); 2118#ifdef WPI_DEBUG 2119 struct wpi_stop_scan *scan = 2120 (struct wpi_stop_scan *)(desc + 1); 2121 DPRINTF(sc, WPI_DEBUG_SCAN, 2122 "scan finished nchan=%d status=%d chan=%d\n", 2123 scan->nchan, scan->status, scan->chan); 2124#endif 2125 sc->sc_scan_timer = 0; 2126 WPI_UNLOCK(sc); 2127 ieee80211_scan_next(vap); 2128 WPI_LOCK(sc); 2129 break; 2130 } 2131 } 2132 } 2133 2134 /* Tell the firmware what we have processed. */ 2135 wpi_update_rx_ring(sc); 2136} 2137 2138/* 2139 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2140 * from power-down sleep mode. 2141 */ 2142static void 2143wpi_wakeup_intr(struct wpi_softc *sc) 2144{ 2145 int qid; 2146 2147 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2148 "%s: ucode wakeup from power-down sleep\n", __func__); 2149 2150 /* Wakeup RX and TX rings. */ 2151 if (sc->rxq.update) { 2152 sc->rxq.update = 0; 2153 wpi_update_rx_ring(sc); 2154 } 2155 WPI_TXQ_LOCK(sc); 2156 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) { 2157 struct wpi_tx_ring *ring = &sc->txq[qid]; 2158 2159 if (ring->update) { 2160 ring->update = 0; 2161 wpi_update_tx_ring(sc, ring); 2162 } 2163 } 2164 WPI_TXQ_UNLOCK(sc); 2165 2166 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2167} 2168 2169/* 2170 * Dump the error log of the firmware when a firmware panic occurs. Although 2171 * we can't debug the firmware because it is neither open source nor free, it 2172 * can help us to identify certain classes of problems. 2173 */ 2174static void 2175wpi_fatal_intr(struct wpi_softc *sc) 2176{ 2177 struct wpi_fw_dump dump; 2178 uint32_t i, offset, count; 2179 const uint32_t size_errmsg = 2180 (sizeof (wpi_fw_errmsg) / sizeof ((wpi_fw_errmsg)[0])); 2181 2182 /* Check that the error log address is valid. */ 2183 if (sc->errptr < WPI_FW_DATA_BASE || 2184 sc->errptr + sizeof (dump) > 2185 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2186 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2187 sc->errptr); 2188 return; 2189 } 2190 if (wpi_nic_lock(sc) != 0) { 2191 printf("%s: could not read firmware error log\n", __func__); 2192 return; 2193 } 2194 /* Read number of entries in the log. */ 2195 count = wpi_mem_read(sc, sc->errptr); 2196 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2197 printf("%s: invalid count field (count = %u)\n", __func__, 2198 count); 2199 wpi_nic_unlock(sc); 2200 return; 2201 } 2202 /* Skip "count" field. */ 2203 offset = sc->errptr + sizeof (uint32_t); 2204 printf("firmware error log (count = %u):\n", count); 2205 for (i = 0; i < count; i++) { 2206 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2207 sizeof (dump) / sizeof (uint32_t)); 2208 2209 printf(" error type = \"%s\" (0x%08X)\n", 2210 (dump.desc < size_errmsg) ? 2211 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2212 dump.desc); 2213 printf(" error data = 0x%08X\n", 2214 dump.data); 2215 printf(" branch link = 0x%08X%08X\n", 2216 dump.blink[0], dump.blink[1]); 2217 printf(" interrupt link = 0x%08X%08X\n", 2218 dump.ilink[0], dump.ilink[1]); 2219 printf(" time = %u\n", dump.time); 2220 2221 offset += sizeof (dump); 2222 } 2223 wpi_nic_unlock(sc); 2224 /* Dump driver status (TX and RX rings) while we're here. */ 2225 printf("driver status:\n"); 2226 WPI_TXQ_LOCK(sc); 2227 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 2228 struct wpi_tx_ring *ring = &sc->txq[i]; 2229 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2230 i, ring->qid, ring->cur, ring->queued); 2231 } 2232 WPI_TXQ_UNLOCK(sc); 2233 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2234} 2235 2236static void 2237wpi_intr(void *arg) 2238{ 2239 struct wpi_softc *sc = arg; 2240 struct ifnet *ifp = sc->sc_ifp; 2241 uint32_t r1, r2; 2242 2243 WPI_LOCK(sc); 2244 2245 /* Disable interrupts. */ 2246 WPI_WRITE(sc, WPI_INT_MASK, 0); 2247 2248 r1 = WPI_READ(sc, WPI_INT); 2249 2250 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) 2251 goto end; /* Hardware gone! */ 2252 2253 r2 = WPI_READ(sc, WPI_FH_INT); 2254 2255 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2256 r1, r2); 2257 2258 if (r1 == 0 && r2 == 0) 2259 goto done; /* Interrupt not for us. */ 2260 2261 /* Acknowledge interrupts. */ 2262 WPI_WRITE(sc, WPI_INT, r1); 2263 WPI_WRITE(sc, WPI_FH_INT, r2); 2264 2265 if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) { 2266 struct ieee80211com *ic = ifp->if_l2com; 2267 2268 device_printf(sc->sc_dev, "fatal firmware error\n"); 2269 wpi_fatal_intr(sc); 2270 DPRINTF(sc, WPI_DEBUG_HW, 2271 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2272 "(Hardware Error)"); 2273 ieee80211_runtask(ic, &sc->sc_reinittask); 2274 goto end; 2275 } 2276 2277 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2278 (r2 & WPI_FH_INT_RX)) 2279 wpi_notif_intr(sc); 2280 2281 if (r1 & WPI_INT_ALIVE) 2282 wakeup(sc); /* Firmware is alive. */ 2283 2284 if (r1 & WPI_INT_WAKEUP) 2285 wpi_wakeup_intr(sc); 2286 2287done: 2288 /* Re-enable interrupts. */ 2289 if (ifp->if_flags & IFF_UP) 2290 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2291 2292end: WPI_UNLOCK(sc); 2293} 2294 2295static int 2296wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2297{ 2298 struct ieee80211_frame *wh; 2299 struct wpi_tx_cmd *cmd; 2300 struct wpi_tx_data *data; 2301 struct wpi_tx_desc *desc; 2302 struct wpi_tx_ring *ring; 2303 struct mbuf *m1; 2304 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2305 int error, i, hdrlen, nsegs, totlen, pad; 2306 2307 WPI_LOCK_ASSERT(sc); 2308 2309 WPI_TXQ_LOCK(sc); 2310 2311 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2312 2313 if (sc->txq_active == 0) { 2314 /* wpi_stop() was called */ 2315 error = ENETDOWN; 2316 goto fail; 2317 } 2318 2319 wh = mtod(buf->m, struct ieee80211_frame *); 2320 hdrlen = ieee80211_anyhdrsize(wh); 2321 totlen = buf->m->m_pkthdr.len; 2322 2323 if (hdrlen & 3) { 2324 /* First segment length must be a multiple of 4. */ 2325 pad = 4 - (hdrlen & 3); 2326 } else 2327 pad = 0; 2328 2329 ring = &sc->txq[buf->ac]; 2330 desc = &ring->desc[ring->cur]; 2331 data = &ring->data[ring->cur]; 2332 2333 /* Prepare TX firmware command. */ 2334 cmd = &ring->cmd[ring->cur]; 2335 cmd->code = buf->code; 2336 cmd->flags = 0; 2337 cmd->qid = ring->qid; 2338 cmd->idx = ring->cur; 2339 2340 memcpy(cmd->data, buf->data, buf->size); 2341 2342 /* Save and trim IEEE802.11 header. */ 2343 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen); 2344 m_adj(buf->m, hdrlen); 2345 2346 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2347 segs, &nsegs, BUS_DMA_NOWAIT); 2348 if (error != 0 && error != EFBIG) { 2349 device_printf(sc->sc_dev, 2350 "%s: can't map mbuf (error %d)\n", __func__, error); 2351 goto fail; 2352 } 2353 if (error != 0) { 2354 /* Too many DMA segments, linearize mbuf. */ 2355 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1); 2356 if (m1 == NULL) { 2357 device_printf(sc->sc_dev, 2358 "%s: could not defrag mbuf\n", __func__); 2359 error = ENOBUFS; 2360 goto fail; 2361 } 2362 buf->m = m1; 2363 2364 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2365 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2366 if (error != 0) { 2367 device_printf(sc->sc_dev, 2368 "%s: can't map mbuf (error %d)\n", __func__, 2369 error); 2370 goto fail; 2371 } 2372 } 2373 2374 KASSERT(nsegs < WPI_MAX_SCATTER, 2375 ("too many DMA segments, nsegs (%d) should be less than %d", 2376 nsegs, WPI_MAX_SCATTER)); 2377 2378 data->m = buf->m; 2379 data->ni = buf->ni; 2380 2381 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2382 __func__, ring->qid, ring->cur, totlen, nsegs); 2383 2384 /* Fill TX descriptor. */ 2385 desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs); 2386 /* First DMA segment is used by the TX command. */ 2387 desc->segs[0].addr = htole32(data->cmd_paddr); 2388 desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad); 2389 /* Other DMA segments are for data payload. */ 2390 seg = &segs[0]; 2391 for (i = 1; i <= nsegs; i++) { 2392 desc->segs[i].addr = htole32(seg->ds_addr); 2393 desc->segs[i].len = htole32(seg->ds_len); 2394 seg++; 2395 } 2396 2397 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2398 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2399 BUS_DMASYNC_PREWRITE); 2400 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2401 BUS_DMASYNC_PREWRITE); 2402 2403 /* Kick TX ring. */ 2404 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2405 wpi_update_tx_ring(sc, ring); 2406 2407 /* Mark TX ring as full if we reach a certain threshold. */ 2408 if (++ring->queued > WPI_TX_RING_HIMARK) 2409 sc->qfullmsk |= 1 << ring->qid; 2410 2411 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2412 2413 WPI_TXQ_UNLOCK(sc); 2414 2415 return 0; 2416 2417fail: m_freem(buf->m); 2418 2419 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2420 2421 WPI_TXQ_UNLOCK(sc); 2422 2423 return error; 2424} 2425 2426/* 2427 * Construct the data packet for a transmit buffer. 2428 */ 2429static int 2430wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2431{ 2432 const struct ieee80211_txparam *tp; 2433 struct ieee80211vap *vap = ni->ni_vap; 2434 struct ieee80211com *ic = ni->ni_ic; 2435 struct wpi_node *wn = WPI_NODE(ni); 2436 struct ieee80211_channel *chan; 2437 struct ieee80211_frame *wh; 2438 struct ieee80211_key *k = NULL; 2439 struct wpi_cmd_data tx; 2440 struct wpi_buf tx_data; 2441 uint32_t flags; 2442 uint16_t qos; 2443 uint8_t tid, type; 2444 int ac, error, swcrypt, rate, ismcast, totlen; 2445 2446 wh = mtod(m, struct ieee80211_frame *); 2447 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2448 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2449 2450 /* Select EDCA Access Category and TX ring for this frame. */ 2451 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2452 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2453 tid = qos & IEEE80211_QOS_TID; 2454 } else { 2455 qos = 0; 2456 tid = 0; 2457 } 2458 ac = M_WME_GETAC(m); 2459 2460 chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ? 2461 ni->ni_chan : ic->ic_curchan; 2462 tp = &vap->iv_txparms[ieee80211_chan2mode(chan)]; 2463 2464 /* Choose a TX rate index. */ 2465 if (type == IEEE80211_FC0_TYPE_MGT) 2466 rate = tp->mgmtrate; 2467 else if (ismcast) 2468 rate = tp->mcastrate; 2469 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2470 rate = tp->ucastrate; 2471 else if (m->m_flags & M_EAPOL) 2472 rate = tp->mgmtrate; 2473 else { 2474 /* XXX pass pktlen */ 2475 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2476 rate = ni->ni_txrate; 2477 } 2478 2479 /* Encrypt the frame if need be. */ 2480 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2481 /* Retrieve key for TX. */ 2482 k = ieee80211_crypto_encap(ni, m); 2483 if (k == NULL) { 2484 error = ENOBUFS; 2485 goto fail; 2486 } 2487 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2488 2489 /* 802.11 header may have moved. */ 2490 wh = mtod(m, struct ieee80211_frame *); 2491 } 2492 totlen = m->m_pkthdr.len; 2493 2494 if (ieee80211_radiotap_active_vap(vap)) { 2495 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2496 2497 tap->wt_flags = 0; 2498 tap->wt_rate = rate; 2499 if (k != NULL) 2500 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2501 2502 ieee80211_radiotap_tx(vap, m); 2503 } 2504 2505 flags = 0; 2506 if (!ismcast) { 2507 /* Unicast frame, check if an ACK is expected. */ 2508 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2509 IEEE80211_QOS_ACKPOLICY_NOACK) 2510 flags |= WPI_TX_NEED_ACK; 2511 } 2512 2513 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2514 flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */ 2515 2516 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2517 if (!ismcast) { 2518 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2519 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2520 flags |= WPI_TX_NEED_RTS; 2521 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2522 WPI_RATE_IS_OFDM(rate)) { 2523 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2524 flags |= WPI_TX_NEED_CTS; 2525 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2526 flags |= WPI_TX_NEED_RTS; 2527 } 2528 2529 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2530 flags |= WPI_TX_FULL_TXOP; 2531 } 2532 2533 memset(&tx, 0, sizeof (struct wpi_cmd_data)); 2534 if (type == IEEE80211_FC0_TYPE_MGT) { 2535 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2536 2537 /* Tell HW to set timestamp in probe responses. */ 2538 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2539 flags |= WPI_TX_INSERT_TSTAMP; 2540 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2541 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2542 tx.timeout = htole16(3); 2543 else 2544 tx.timeout = htole16(2); 2545 } 2546 2547 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2548 tx.id = WPI_ID_BROADCAST; 2549 else { 2550 if (wn->id == WPI_ID_UNDEFINED && 2551 (vap->iv_opmode == IEEE80211_M_IBSS || 2552 vap->iv_opmode == IEEE80211_M_AHDEMO)) { 2553 error = wpi_add_ibss_node(sc, ni); 2554 if (error != 0) { 2555 device_printf(sc->sc_dev, 2556 "%s: could not add IBSS node, error %d\n", 2557 __func__, error); 2558 goto fail; 2559 } 2560 } 2561 2562 if (wn->id == WPI_ID_UNDEFINED) { 2563 device_printf(sc->sc_dev, 2564 "%s: undefined node id\n", __func__); 2565 error = EINVAL; 2566 goto fail; 2567 } 2568 2569 tx.id = wn->id; 2570 } 2571 2572 if (type != IEEE80211_FC0_TYPE_MGT) 2573 tx.data_ntries = tp->maxretry; 2574 2575 if (k != NULL && !swcrypt) { 2576 switch (k->wk_cipher->ic_cipher) { 2577 case IEEE80211_CIPHER_AES_CCM: 2578 tx.security = WPI_CIPHER_CCMP; 2579 break; 2580 2581 default: 2582 break; 2583 } 2584 2585 memcpy(tx.key, k->wk_key, k->wk_keylen); 2586 } 2587 2588 tx.len = htole16(totlen); 2589 tx.flags = htole32(flags); 2590 tx.plcp = rate2plcp(rate); 2591 tx.tid = tid; 2592 tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2593 tx.ofdm_mask = 0xff; 2594 tx.cck_mask = 0x0f; 2595 tx.rts_ntries = 7; 2596 2597 tx_data.data = &tx; 2598 tx_data.ni = ni; 2599 tx_data.m = m; 2600 tx_data.size = sizeof(tx); 2601 tx_data.code = WPI_CMD_TX_DATA; 2602 tx_data.ac = ac; 2603 2604 return wpi_cmd2(sc, &tx_data); 2605 2606fail: m_freem(m); 2607 return error; 2608} 2609 2610static int 2611wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, 2612 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 2613{ 2614 struct ieee80211vap *vap = ni->ni_vap; 2615 struct ieee80211_frame *wh; 2616 struct wpi_cmd_data tx; 2617 struct wpi_buf tx_data; 2618 uint32_t flags; 2619 uint8_t type; 2620 int ac, rate, totlen; 2621 2622 wh = mtod(m, struct ieee80211_frame *); 2623 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2624 totlen = m->m_pkthdr.len; 2625 2626 ac = params->ibp_pri & 3; 2627 2628 /* Choose a TX rate index. */ 2629 rate = params->ibp_rate0; 2630 2631 flags = 0; 2632 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2633 flags |= WPI_TX_NEED_ACK; 2634 if (params->ibp_flags & IEEE80211_BPF_RTS) 2635 flags |= WPI_TX_NEED_RTS; 2636 if (params->ibp_flags & IEEE80211_BPF_CTS) 2637 flags |= WPI_TX_NEED_CTS; 2638 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2639 flags |= WPI_TX_FULL_TXOP; 2640 2641 if (ieee80211_radiotap_active_vap(vap)) { 2642 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2643 2644 tap->wt_flags = 0; 2645 tap->wt_rate = rate; 2646 2647 ieee80211_radiotap_tx(vap, m); 2648 } 2649 2650 memset(&tx, 0, sizeof (struct wpi_cmd_data)); 2651 if (type == IEEE80211_FC0_TYPE_MGT) { 2652 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2653 2654 /* Tell HW to set timestamp in probe responses. */ 2655 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2656 flags |= WPI_TX_INSERT_TSTAMP; 2657 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2658 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2659 tx.timeout = htole16(3); 2660 else 2661 tx.timeout = htole16(2); 2662 } 2663 2664 tx.len = htole16(totlen); 2665 tx.flags = htole32(flags); 2666 tx.plcp = rate2plcp(rate); 2667 tx.id = WPI_ID_BROADCAST; 2668 tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2669 tx.rts_ntries = params->ibp_try1; 2670 tx.data_ntries = params->ibp_try0; 2671 2672 tx_data.data = &tx; 2673 tx_data.ni = ni; 2674 tx_data.m = m; 2675 tx_data.size = sizeof(tx); 2676 tx_data.code = WPI_CMD_TX_DATA; 2677 tx_data.ac = ac; 2678 2679 return wpi_cmd2(sc, &tx_data); 2680} 2681 2682static int 2683wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2684 const struct ieee80211_bpf_params *params) 2685{ 2686 struct ieee80211com *ic = ni->ni_ic; 2687 struct ifnet *ifp = ic->ic_ifp; 2688 struct wpi_softc *sc = ifp->if_softc; 2689 int error = 0; 2690 2691 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2692 2693 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2694 ieee80211_free_node(ni); 2695 m_freem(m); 2696 return ENETDOWN; 2697 } 2698 2699 WPI_LOCK(sc); 2700 if (params == NULL) { 2701 /* 2702 * Legacy path; interpret frame contents to decide 2703 * precisely how to send the frame. 2704 */ 2705 error = wpi_tx_data(sc, m, ni); 2706 } else { 2707 /* 2708 * Caller supplied explicit parameters to use in 2709 * sending the frame. 2710 */ 2711 error = wpi_tx_data_raw(sc, m, ni, params); 2712 } 2713 WPI_UNLOCK(sc); 2714 2715 if (error != 0) { 2716 /* NB: m is reclaimed on tx failure */ 2717 ieee80211_free_node(ni); 2718 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2719 2720 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2721 2722 return error; 2723 } 2724 2725 sc->sc_tx_timer = 5; 2726 2727 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2728 2729 return 0; 2730} 2731 2732/** 2733 * Process data waiting to be sent on the IFNET output queue 2734 */ 2735static void 2736wpi_start(struct ifnet *ifp) 2737{ 2738 struct wpi_softc *sc = ifp->if_softc; 2739 2740 WPI_LOCK(sc); 2741 wpi_start_locked(ifp); 2742 WPI_UNLOCK(sc); 2743} 2744 2745static void 2746wpi_start_locked(struct ifnet *ifp) 2747{ 2748 struct wpi_softc *sc = ifp->if_softc; 2749 struct ieee80211_node *ni; 2750 struct mbuf *m; 2751 2752 WPI_LOCK_ASSERT(sc); 2753 2754 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 2755 2756 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2757 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) 2758 return; 2759 2760 for (;;) { 2761 if (sc->qfullmsk != 0) { 2762 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2763 break; 2764 } 2765 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2766 if (m == NULL) 2767 break; 2768 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 2769 if (wpi_tx_data(sc, m, ni) != 0) { 2770 WPI_UNLOCK(sc); 2771 ieee80211_free_node(ni); 2772 WPI_LOCK(sc); 2773 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2774 } else 2775 sc->sc_tx_timer = 5; 2776 } 2777 2778 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 2779} 2780 2781static void 2782wpi_watchdog_rfkill(void *arg) 2783{ 2784 struct wpi_softc *sc = arg; 2785 struct ifnet *ifp = sc->sc_ifp; 2786 struct ieee80211com *ic = ifp->if_l2com; 2787 2788 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n"); 2789 2790 /* No need to lock firmware memory. */ 2791 if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) { 2792 /* Radio kill switch is still off. */ 2793 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 2794 sc); 2795 } else 2796 ieee80211_runtask(ic, &sc->sc_radioon_task); 2797} 2798 2799/** 2800 * Called every second, wpi_watchdog used by the watch dog timer 2801 * to check that the card is still alive 2802 */ 2803static void 2804wpi_watchdog(void *arg) 2805{ 2806 struct wpi_softc *sc = arg; 2807 struct ifnet *ifp = sc->sc_ifp; 2808 struct ieee80211com *ic = ifp->if_l2com; 2809 2810 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "Watchdog: tick\n"); 2811 2812 if (sc->sc_tx_timer > 0) { 2813 if (--sc->sc_tx_timer == 0) { 2814 if_printf(ifp, "device timeout\n"); 2815 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2816 ieee80211_runtask(ic, &sc->sc_reinittask); 2817 } 2818 } 2819 2820 if (sc->sc_scan_timer > 0) { 2821 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2822 if (--sc->sc_scan_timer == 0 && vap != NULL) { 2823 if_printf(ifp, "scan timeout\n"); 2824 ieee80211_cancel_scan(vap); 2825 ieee80211_runtask(ic, &sc->sc_reinittask); 2826 } 2827 } 2828 2829 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2830 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2831} 2832 2833static int 2834wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2835{ 2836 struct wpi_softc *sc = ifp->if_softc; 2837 struct ieee80211com *ic = ifp->if_l2com; 2838 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2839 struct ifreq *ifr = (struct ifreq *) data; 2840 int error = 0, startall = 0, stop = 0; 2841 2842 switch (cmd) { 2843 case SIOCGIFADDR: 2844 error = ether_ioctl(ifp, cmd, data); 2845 break; 2846 case SIOCSIFFLAGS: 2847 WPI_LOCK(sc); 2848 if (ifp->if_flags & IFF_UP) { 2849 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2850 wpi_init_locked(sc); 2851 if (WPI_READ(sc, WPI_GP_CNTRL) & 2852 WPI_GP_CNTRL_RFKILL) 2853 startall = 1; 2854 else 2855 stop = 1; 2856 } 2857 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2858 wpi_stop_locked(sc); 2859 WPI_UNLOCK(sc); 2860 if (startall) 2861 ieee80211_start_all(ic); 2862 else if (vap != NULL && stop) 2863 ieee80211_stop(vap); 2864 break; 2865 case SIOCGIFMEDIA: 2866 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2867 break; 2868 default: 2869 error = EINVAL; 2870 break; 2871 } 2872 return error; 2873} 2874 2875/* 2876 * Send a command to the firmware. 2877 */ 2878static int 2879wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size, 2880 int async) 2881{ 2882 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 2883 struct wpi_tx_desc *desc; 2884 struct wpi_tx_data *data; 2885 struct wpi_tx_cmd *cmd; 2886 struct mbuf *m; 2887 bus_addr_t paddr; 2888 int totlen, error; 2889 2890 WPI_TXQ_LOCK(sc); 2891 2892 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2893 2894 if (sc->txq_active == 0) { 2895 /* wpi_stop() was called */ 2896 error = 0; 2897 goto fail; 2898 } 2899 2900 if (async == 0) 2901 WPI_LOCK_ASSERT(sc); 2902 2903 DPRINTF(sc, WPI_DEBUG_CMD, "wpi_cmd %s size %zu async %d\n", 2904 wpi_cmd_str(code), size, async); 2905 2906 desc = &ring->desc[ring->cur]; 2907 data = &ring->data[ring->cur]; 2908 totlen = 4 + size; 2909 2910 if (size > sizeof cmd->data) { 2911 /* Command is too large to fit in a descriptor. */ 2912 if (totlen > MCLBYTES) { 2913 error = EINVAL; 2914 goto fail; 2915 } 2916 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 2917 if (m == NULL) { 2918 error = ENOMEM; 2919 goto fail; 2920 } 2921 cmd = mtod(m, struct wpi_tx_cmd *); 2922 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 2923 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 2924 if (error != 0) { 2925 m_freem(m); 2926 goto fail; 2927 } 2928 data->m = m; 2929 } else { 2930 cmd = &ring->cmd[ring->cur]; 2931 paddr = data->cmd_paddr; 2932 } 2933 2934 cmd->code = code; 2935 cmd->flags = 0; 2936 cmd->qid = ring->qid; 2937 cmd->idx = ring->cur; 2938 memcpy(cmd->data, buf, size); 2939 2940 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 2941 desc->segs[0].addr = htole32(paddr); 2942 desc->segs[0].len = htole32(totlen); 2943 2944 if (size > sizeof cmd->data) { 2945 bus_dmamap_sync(ring->data_dmat, data->map, 2946 BUS_DMASYNC_PREWRITE); 2947 } else { 2948 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2949 BUS_DMASYNC_PREWRITE); 2950 } 2951 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2952 BUS_DMASYNC_PREWRITE); 2953 2954 /* Kick command ring. */ 2955 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2956 wpi_update_tx_ring(sc, ring); 2957 2958 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2959 2960 WPI_TXQ_UNLOCK(sc); 2961 2962 if (async) 2963 return 0; 2964 2965 return mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2966 2967fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2968 2969 WPI_TXQ_UNLOCK(sc); 2970 2971 return error; 2972} 2973 2974/* 2975 * Configure HW multi-rate retries. 2976 */ 2977static int 2978wpi_mrr_setup(struct wpi_softc *sc) 2979{ 2980 struct ifnet *ifp = sc->sc_ifp; 2981 struct ieee80211com *ic = ifp->if_l2com; 2982 struct wpi_mrr_setup mrr; 2983 int i, error; 2984 2985 /* CCK rates (not used with 802.11a). */ 2986 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 2987 mrr.rates[i].flags = 0; 2988 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2989 /* Fallback to the immediate lower CCK rate (if any.) */ 2990 mrr.rates[i].next = 2991 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 2992 /* Try one time at this rate before falling back to "next". */ 2993 mrr.rates[i].ntries = 1; 2994 } 2995 /* OFDM rates (not used with 802.11b). */ 2996 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 2997 mrr.rates[i].flags = 0; 2998 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2999 /* Fallback to the immediate lower rate (if any.) */ 3000 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 3001 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 3002 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 3003 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 3004 i - 1; 3005 /* Try one time at this rate before falling back to "next". */ 3006 mrr.rates[i].ntries = 1; 3007 } 3008 /* Setup MRR for control frames. */ 3009 mrr.which = htole32(WPI_MRR_CTL); 3010 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3011 if (error != 0) { 3012 device_printf(sc->sc_dev, 3013 "could not setup MRR for control frames\n"); 3014 return error; 3015 } 3016 /* Setup MRR for data frames. */ 3017 mrr.which = htole32(WPI_MRR_DATA); 3018 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3019 if (error != 0) { 3020 device_printf(sc->sc_dev, 3021 "could not setup MRR for data frames\n"); 3022 return error; 3023 } 3024 return 0; 3025} 3026 3027static int 3028wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3029{ 3030 struct ieee80211com *ic = ni->ni_ic; 3031 struct wpi_node *wn = WPI_NODE(ni); 3032 struct wpi_node_info node; 3033 3034 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3035 3036 if (wn->id == WPI_ID_UNDEFINED) 3037 return EINVAL; 3038 3039 memset(&node, 0, sizeof node); 3040 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3041 node.id = wn->id; 3042 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3043 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3044 node.action = htole32(WPI_ACTION_SET_RATE); 3045 node.antenna = WPI_ANTENNA_BOTH; 3046 3047 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 3048} 3049 3050/* 3051 * Broadcast node is used to send group-addressed and management frames. 3052 */ 3053static int 3054wpi_add_broadcast_node(struct wpi_softc *sc, int async) 3055{ 3056 struct ifnet *ifp = sc->sc_ifp; 3057 struct ieee80211com *ic = ifp->if_l2com; 3058 struct wpi_node_info node; 3059 3060 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3061 3062 memset(&node, 0, sizeof node); 3063 IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr); 3064 node.id = WPI_ID_BROADCAST; 3065 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3066 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3067 node.action = htole32(WPI_ACTION_SET_RATE); 3068 node.antenna = WPI_ANTENNA_BOTH; 3069 3070 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 3071} 3072 3073static int 3074wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3075{ 3076 struct wpi_node *wn = WPI_NODE(ni); 3077 int error; 3078 3079 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3080 3081 wn->id = wpi_add_node_entry_sta(sc); 3082 3083 if ((error = wpi_add_node(sc, ni)) != 0) { 3084 wpi_del_node_entry(sc, wn->id); 3085 wn->id = WPI_ID_UNDEFINED; 3086 return error; 3087 } 3088 3089 return 0; 3090} 3091 3092static int 3093wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3094{ 3095 struct wpi_node *wn = WPI_NODE(ni); 3096 int error; 3097 3098 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3099 3100 if (wn->id != WPI_ID_UNDEFINED) 3101 return EINVAL; 3102 3103 if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) { 3104 device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__); 3105 return ENOMEM; 3106 } 3107 3108 if ((error = wpi_add_node(sc, ni)) != 0) { 3109 wpi_del_node_entry(sc, wn->id); 3110 wn->id = WPI_ID_UNDEFINED; 3111 return error; 3112 } 3113 3114 return 0; 3115} 3116 3117static void 3118wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3119{ 3120 struct wpi_node *wn = WPI_NODE(ni); 3121 struct wpi_cmd_del_node node; 3122 int error; 3123 3124 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3125 3126 if (wn->id == WPI_ID_UNDEFINED) { 3127 device_printf(sc->sc_dev, "%s: undefined node id passed\n", 3128 __func__); 3129 return; 3130 } 3131 3132 memset(&node, 0, sizeof node); 3133 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3134 node.count = 1; 3135 3136 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3137 if (error != 0) { 3138 device_printf(sc->sc_dev, 3139 "%s: could not delete node %u, error %d\n", __func__, 3140 wn->id, error); 3141 } 3142} 3143 3144static int 3145wpi_updateedca(struct ieee80211com *ic) 3146{ 3147#define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3148 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3149 struct wpi_edca_params cmd; 3150 int aci, error; 3151 3152 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3153 3154 memset(&cmd, 0, sizeof cmd); 3155 cmd.flags = htole32(WPI_EDCA_UPDATE); 3156 for (aci = 0; aci < WME_NUM_AC; aci++) { 3157 const struct wmeParams *ac = 3158 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 3159 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3160 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3161 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3162 cmd.ac[aci].txoplimit = 3163 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3164 3165 DPRINTF(sc, WPI_DEBUG_EDCA, 3166 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3167 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3168 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3169 cmd.ac[aci].txoplimit); 3170 } 3171 IEEE80211_UNLOCK(ic); 3172 WPI_LOCK(sc); 3173 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3174 WPI_UNLOCK(sc); 3175 IEEE80211_LOCK(ic); 3176 3177 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3178 3179 return error; 3180#undef WPI_EXP2 3181} 3182 3183static void 3184wpi_set_promisc(struct wpi_softc *sc) 3185{ 3186 struct ifnet *ifp = sc->sc_ifp; 3187 uint32_t promisc_filter; 3188 3189 promisc_filter = WPI_FILTER_PROMISC | WPI_FILTER_CTL; 3190 3191 if (ifp->if_flags & IFF_PROMISC) 3192 sc->rxon.filter |= htole32(promisc_filter); 3193 else 3194 sc->rxon.filter &= ~htole32(promisc_filter); 3195} 3196 3197static void 3198wpi_update_promisc(struct ifnet *ifp) 3199{ 3200 struct wpi_softc *sc = ifp->if_softc; 3201 3202 wpi_set_promisc(sc); 3203 3204 WPI_LOCK(sc); 3205 if (wpi_send_rxon(sc, 1, 1) != 0) { 3206 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3207 __func__); 3208 } 3209 WPI_UNLOCK(sc); 3210} 3211 3212static void 3213wpi_update_mcast(struct ifnet *ifp) 3214{ 3215 /* Ignore */ 3216} 3217 3218static void 3219wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3220{ 3221 struct wpi_cmd_led led; 3222 3223 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3224 3225 led.which = which; 3226 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3227 led.off = off; 3228 led.on = on; 3229 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3230} 3231 3232static int 3233wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3234{ 3235 struct wpi_cmd_timing cmd; 3236 uint64_t val, mod; 3237 3238 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3239 3240 memset(&cmd, 0, sizeof cmd); 3241 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3242 cmd.bintval = htole16(ni->ni_intval); 3243 cmd.lintval = htole16(10); 3244 3245 /* Compute remaining time until next beacon. */ 3246 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3247 mod = le64toh(cmd.tstamp) % val; 3248 cmd.binitval = htole32((uint32_t)(val - mod)); 3249 3250 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3251 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3252 3253 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3254} 3255 3256/* 3257 * This function is called periodically (every 60 seconds) to adjust output 3258 * power to temperature changes. 3259 */ 3260static void 3261wpi_power_calibration(struct wpi_softc *sc) 3262{ 3263 int temp; 3264 3265 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3266 3267 /* Update sensor data. */ 3268 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3269 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3270 3271 /* Sanity-check read value. */ 3272 if (temp < -260 || temp > 25) { 3273 /* This can't be correct, ignore. */ 3274 DPRINTF(sc, WPI_DEBUG_TEMP, 3275 "out-of-range temperature reported: %d\n", temp); 3276 return; 3277 } 3278 3279 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3280 3281 /* Adjust Tx power if need be. */ 3282 if (abs(temp - sc->temp) <= 6) 3283 return; 3284 3285 sc->temp = temp; 3286 3287 if (wpi_set_txpower(sc, 1) != 0) { 3288 /* just warn, too bad for the automatic calibration... */ 3289 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3290 } 3291} 3292 3293/* 3294 * Set TX power for current channel. 3295 */ 3296static int 3297wpi_set_txpower(struct wpi_softc *sc, int async) 3298{ 3299 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3300 struct ieee80211_channel *ch; 3301 struct wpi_power_group *group; 3302 struct wpi_cmd_txpower cmd; 3303 uint8_t chan; 3304 int idx, i; 3305 3306 /* Retrieve current channel from last RXON. */ 3307 chan = sc->rxon.chan; 3308 ch = &ic->ic_channels[chan]; 3309 3310 /* Find the TX power group to which this channel belongs. */ 3311 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3312 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3313 if (chan <= group->chan) 3314 break; 3315 } else 3316 group = &sc->groups[0]; 3317 3318 memset(&cmd, 0, sizeof cmd); 3319 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1; 3320 cmd.chan = htole16(chan); 3321 3322 /* Set TX power for all OFDM and CCK rates. */ 3323 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3324 /* Retrieve TX power for this channel/rate. */ 3325 idx = wpi_get_power_index(sc, group, ch, i); 3326 3327 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3328 3329 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3330 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3331 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3332 } else { 3333 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3334 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3335 } 3336 DPRINTF(sc, WPI_DEBUG_TEMP, 3337 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3338 } 3339 3340 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3341} 3342 3343/* 3344 * Determine Tx power index for a given channel/rate combination. 3345 * This takes into account the regulatory information from EEPROM and the 3346 * current temperature. 3347 */ 3348static int 3349wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3350 struct ieee80211_channel *c, int ridx) 3351{ 3352/* Fixed-point arithmetic division using a n-bit fractional part. */ 3353#define fdivround(a, b, n) \ 3354 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3355 3356/* Linear interpolation. */ 3357#define interpolate(x, x1, y1, x2, y2, n) \ 3358 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3359 3360 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3361 struct wpi_power_sample *sample; 3362 int pwr, idx; 3363 u_int chan; 3364 3365 /* Get channel number. */ 3366 chan = ieee80211_chan2ieee(ic, c); 3367 3368 /* Default TX power is group maximum TX power minus 3dB. */ 3369 pwr = group->maxpwr / 2; 3370 3371 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3372 switch (ridx) { 3373 case WPI_RIDX_OFDM36: 3374 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3375 break; 3376 case WPI_RIDX_OFDM48: 3377 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3378 break; 3379 case WPI_RIDX_OFDM54: 3380 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3381 break; 3382 } 3383 3384 /* Never exceed the channel maximum allowed TX power. */ 3385 pwr = min(pwr, sc->maxpwr[chan]); 3386 3387 /* Retrieve TX power index into gain tables from samples. */ 3388 for (sample = group->samples; sample < &group->samples[3]; sample++) 3389 if (pwr > sample[1].power) 3390 break; 3391 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3392 idx = interpolate(pwr, sample[0].power, sample[0].index, 3393 sample[1].power, sample[1].index, 19); 3394 3395 /*- 3396 * Adjust power index based on current temperature: 3397 * - if cooler than factory-calibrated: decrease output power 3398 * - if warmer than factory-calibrated: increase output power 3399 */ 3400 idx -= (sc->temp - group->temp) * 11 / 100; 3401 3402 /* Decrease TX power for CCK rates (-5dB). */ 3403 if (ridx >= WPI_RIDX_CCK1) 3404 idx += 10; 3405 3406 /* Make sure idx stays in a valid range. */ 3407 if (idx < 0) 3408 return 0; 3409 if (idx > WPI_MAX_PWR_INDEX) 3410 return WPI_MAX_PWR_INDEX; 3411 return idx; 3412 3413#undef interpolate 3414#undef fdivround 3415} 3416 3417/* 3418 * Set STA mode power saving level (between 0 and 5). 3419 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3420 */ 3421static int 3422wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3423{ 3424 struct wpi_pmgt_cmd cmd; 3425 const struct wpi_pmgt *pmgt; 3426 uint32_t max, skip_dtim; 3427 uint32_t reg; 3428 int i; 3429 3430 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3431 "%s: dtim=%d, level=%d, async=%d\n", 3432 __func__, dtim, level, async); 3433 3434 /* Select which PS parameters to use. */ 3435 if (dtim <= 10) 3436 pmgt = &wpi_pmgt[0][level]; 3437 else 3438 pmgt = &wpi_pmgt[1][level]; 3439 3440 memset(&cmd, 0, sizeof cmd); 3441 if (level != 0) /* not CAM */ 3442 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3443 /* Retrieve PCIe Active State Power Management (ASPM). */ 3444 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 3445 if (!(reg & 0x1)) /* L0s Entry disabled. */ 3446 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3447 3448 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3449 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3450 3451 if (dtim == 0) { 3452 dtim = 1; 3453 skip_dtim = 0; 3454 } else 3455 skip_dtim = pmgt->skip_dtim; 3456 3457 if (skip_dtim != 0) { 3458 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3459 max = pmgt->intval[4]; 3460 if (max == (uint32_t)-1) 3461 max = dtim * (skip_dtim + 1); 3462 else if (max > dtim) 3463 max = (max / dtim) * dtim; 3464 } else 3465 max = dtim; 3466 3467 for (i = 0; i < 5; i++) 3468 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3469 3470 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3471} 3472 3473static int 3474wpi_send_btcoex(struct wpi_softc *sc) 3475{ 3476 struct wpi_bluetooth cmd; 3477 3478 memset(&cmd, 0, sizeof cmd); 3479 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3480 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3481 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3482 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3483 __func__); 3484 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3485} 3486 3487static int 3488wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3489{ 3490 int error; 3491 3492 if (assoc && (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3493 struct wpi_assoc rxon_assoc; 3494 3495 rxon_assoc.flags = sc->rxon.flags; 3496 rxon_assoc.filter = sc->rxon.filter; 3497 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3498 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3499 rxon_assoc.reserved = 0; 3500 3501 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3502 sizeof (struct wpi_assoc), async); 3503 } else { 3504 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3505 sizeof (struct wpi_rxon), async); 3506 3507 wpi_clear_node_table(sc); 3508 } 3509 if (error != 0) { 3510 device_printf(sc->sc_dev, "RXON command failed, error %d\n", 3511 error); 3512 return error; 3513 } 3514 3515 /* Configuration has changed, set Tx power accordingly. */ 3516 if ((error = wpi_set_txpower(sc, async)) != 0) { 3517 device_printf(sc->sc_dev, 3518 "%s: could not set TX power, error %d\n", __func__, error); 3519 return error; 3520 } 3521 3522 if (!(sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3523 /* Add broadcast node. */ 3524 error = wpi_add_broadcast_node(sc, async); 3525 if (error != 0) { 3526 device_printf(sc->sc_dev, 3527 "could not add broadcast node, error %d\n", error); 3528 return error; 3529 } 3530 } 3531 3532 return 0; 3533} 3534 3535/** 3536 * Configure the card to listen to a particular channel, this transisions the 3537 * card in to being able to receive frames from remote devices. 3538 */ 3539static int 3540wpi_config(struct wpi_softc *sc) 3541{ 3542 struct ifnet *ifp = sc->sc_ifp; 3543 struct ieee80211com *ic = ifp->if_l2com; 3544 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3545 uint32_t flags; 3546 int error; 3547 3548 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3549 3550 /* Set power saving level to CAM during initialization. */ 3551 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3552 device_printf(sc->sc_dev, 3553 "%s: could not set power saving level\n", __func__); 3554 return error; 3555 } 3556 3557 /* Configure bluetooth coexistence. */ 3558 if ((error = wpi_send_btcoex(sc)) != 0) { 3559 device_printf(sc->sc_dev, 3560 "could not configure bluetooth coexistence\n"); 3561 return error; 3562 } 3563 3564 /* Configure adapter. */ 3565 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3566 IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr); 3567 3568 /* Set default channel. */ 3569 sc->rxon.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3570 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3571 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 3572 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3573 3574 sc->rxon.filter = WPI_FILTER_MULTICAST; 3575 switch (ic->ic_opmode) { 3576 case IEEE80211_M_STA: 3577 sc->rxon.mode = WPI_MODE_STA; 3578 break; 3579 case IEEE80211_M_IBSS: 3580 sc->rxon.mode = WPI_MODE_IBSS; 3581 sc->rxon.filter |= WPI_FILTER_BEACON; 3582 break; 3583 /* XXX workaround for passive channels selection */ 3584 case IEEE80211_M_AHDEMO: 3585 case IEEE80211_M_HOSTAP: 3586 sc->rxon.mode = WPI_MODE_HOSTAP; 3587 break; 3588 case IEEE80211_M_MONITOR: 3589 sc->rxon.mode = WPI_MODE_MONITOR; 3590 break; 3591 default: 3592 device_printf(sc->sc_dev, "unknown opmode %d\n", 3593 ic->ic_opmode); 3594 return EINVAL; 3595 } 3596 sc->rxon.filter = htole32(sc->rxon.filter); 3597 wpi_set_promisc(sc); 3598 sc->rxon.cck_mask = 0x0f; /* not yet negotiated */ 3599 sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */ 3600 3601 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) { 3602 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3603 __func__); 3604 return error; 3605 } 3606 3607 /* Setup rate scalling. */ 3608 if ((error = wpi_mrr_setup(sc)) != 0) { 3609 device_printf(sc->sc_dev, "could not setup MRR, error %d\n", 3610 error); 3611 return error; 3612 } 3613 3614 /* Disable beacon notifications (unused). */ 3615 flags = WPI_STATISTICS_BEACON_DISABLE; 3616 error = wpi_cmd(sc, WPI_CMD_GET_STATISTICS, &flags, sizeof flags, 1); 3617 if (error != 0) { 3618 device_printf(sc->sc_dev, 3619 "could not disable beacon statistics, error %d\n", error); 3620 return error; 3621 } 3622 3623 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3624 3625 return 0; 3626} 3627 3628static uint16_t 3629wpi_get_active_dwell_time(struct wpi_softc *sc, 3630 struct ieee80211_channel *c, uint8_t n_probes) 3631{ 3632 /* No channel? Default to 2GHz settings. */ 3633 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) { 3634 return (WPI_ACTIVE_DWELL_TIME_2GHZ + 3635 WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1)); 3636 } 3637 3638 /* 5GHz dwell time. */ 3639 return (WPI_ACTIVE_DWELL_TIME_5GHZ + 3640 WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1)); 3641} 3642 3643/* 3644 * Limit the total dwell time to 85% of the beacon interval. 3645 * 3646 * Returns the dwell time in milliseconds. 3647 */ 3648static uint16_t 3649wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time) 3650{ 3651 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3652 struct ieee80211vap *vap = NULL; 3653 int bintval = 0; 3654 3655 /* bintval is in TU (1.024mS) */ 3656 if (! TAILQ_EMPTY(&ic->ic_vaps)) { 3657 vap = TAILQ_FIRST(&ic->ic_vaps); 3658 bintval = vap->iv_bss->ni_intval; 3659 } 3660 3661 /* 3662 * If it's non-zero, we should calculate the minimum of 3663 * it and the DWELL_BASE. 3664 * 3665 * XXX Yes, the math should take into account that bintval 3666 * is 1.024mS, not 1mS.. 3667 */ 3668 if (bintval > 0) { 3669 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 3670 bintval); 3671 return (MIN(WPI_PASSIVE_DWELL_BASE, ((bintval * 85) / 100))); 3672 } 3673 3674 /* No association context? Default. */ 3675 return (WPI_PASSIVE_DWELL_BASE); 3676} 3677 3678static uint16_t 3679wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 3680{ 3681 uint16_t passive; 3682 3683 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 3684 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 3685 else 3686 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 3687 3688 /* Clamp to the beacon interval if we're associated. */ 3689 return (wpi_limit_dwell(sc, passive)); 3690} 3691 3692/* 3693 * Send a scan request to the firmware. 3694 */ 3695static int 3696wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 3697{ 3698 struct ifnet *ifp = sc->sc_ifp; 3699 struct ieee80211com *ic = ifp->if_l2com; 3700 struct ieee80211_scan_state *ss = ic->ic_scan; 3701 struct ieee80211vap *vap = ss->ss_vap; 3702 struct wpi_scan_hdr *hdr; 3703 struct wpi_cmd_data *tx; 3704 struct wpi_scan_essid *essids; 3705 struct wpi_scan_chan *chan; 3706 struct ieee80211_frame *wh; 3707 struct ieee80211_rateset *rs; 3708 uint16_t dwell_active, dwell_passive; 3709 uint8_t *buf, *frm; 3710 int buflen, error, i, nssid; 3711 3712 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3713 3714 /* 3715 * We are absolutely not allowed to send a scan command when another 3716 * scan command is pending. 3717 */ 3718 if (sc->sc_scan_timer) { 3719 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 3720 __func__); 3721 3722 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3723 3724 return (EAGAIN); 3725 } 3726 3727 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 3728 if (buf == NULL) { 3729 device_printf(sc->sc_dev, 3730 "%s: could not allocate buffer for scan command\n", 3731 __func__); 3732 error = ENOMEM; 3733 goto fail; 3734 } 3735 hdr = (struct wpi_scan_hdr *)buf; 3736 3737 /* 3738 * Move to the next channel if no packets are received within 10 msecs 3739 * after sending the probe request. 3740 */ 3741 hdr->quiet_time = htole16(10); /* timeout in milliseconds */ 3742 hdr->quiet_threshold = htole16(1); /* min # of packets */ 3743 /* 3744 * Max needs to be greater than active and passive and quiet! 3745 * It's also in microseconds! 3746 */ 3747 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 3748 hdr->pause_svc = htole32((4 << 24) | 3749 (100 * IEEE80211_DUR_TU)); /* Hardcode for now */ 3750 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 3751 3752 tx = (struct wpi_cmd_data *)(hdr + 1); 3753 tx->flags = htole32(WPI_TX_AUTO_SEQ); 3754 tx->id = WPI_ID_BROADCAST; 3755 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 3756 3757 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3758 /* Send probe requests at 6Mbps. */ 3759 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 3760 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 3761 } else { 3762 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 3763 /* Send probe requests at 1Mbps. */ 3764 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3765 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 3766 } 3767 3768 essids = (struct wpi_scan_essid *)(tx + 1); 3769 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 3770 for (i = 0; i < nssid; i++) { 3771 essids[i].id = IEEE80211_ELEMID_SSID; 3772 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 3773 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 3774#ifdef WPI_DEBUG 3775 if (sc->sc_debug & WPI_DEBUG_SCAN) { 3776 printf("Scanning Essid: "); 3777 ieee80211_print_essid(essids[i].data, essids[i].len); 3778 printf("\n"); 3779 } 3780#endif 3781 } 3782 3783 /* 3784 * Build a probe request frame. Most of the following code is a 3785 * copy & paste of what is done in net80211. 3786 */ 3787 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 3788 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 3789 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 3790 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 3791 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 3792 IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr); 3793 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 3794 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 3795 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 3796 3797 frm = (uint8_t *)(wh + 1); 3798 frm = ieee80211_add_ssid(frm, NULL, 0); 3799 frm = ieee80211_add_rates(frm, rs); 3800 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 3801 frm = ieee80211_add_xrates(frm, rs); 3802 3803 /* Set length of probe request. */ 3804 tx->len = htole16(frm - (uint8_t *)wh); 3805 3806 /* 3807 * Construct information about the channel that we 3808 * want to scan. The firmware expects this to be directly 3809 * after the scan probe request 3810 */ 3811 chan = (struct wpi_scan_chan *)frm; 3812 chan->chan = htole16(ieee80211_chan2ieee(ic, c)); 3813 chan->flags = 0; 3814 if (nssid) { 3815 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 3816 chan->flags |= WPI_CHAN_NPBREQS(nssid); 3817 } else 3818 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 3819 3820 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 3821 chan->flags |= WPI_CHAN_ACTIVE; 3822 3823 /* 3824 * Calculate the active/passive dwell times. 3825 */ 3826 3827 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 3828 dwell_passive = wpi_get_passive_dwell_time(sc, c); 3829 3830 /* Make sure they're valid. */ 3831 if (dwell_passive <= dwell_active) 3832 dwell_passive = dwell_active + 1; 3833 3834 chan->active = htole16(dwell_active); 3835 chan->passive = htole16(dwell_passive); 3836 3837 chan->dsp_gain = 0x6e; /* Default level */ 3838 3839 if (IEEE80211_IS_CHAN_5GHZ(c)) 3840 chan->rf_gain = 0x3b; 3841 else 3842 chan->rf_gain = 0x28; 3843 3844 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 3845 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 3846 3847 hdr->nchan++; 3848 chan++; 3849 3850 buflen = (uint8_t *)chan - buf; 3851 hdr->len = htole16(buflen); 3852 3853 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 3854 hdr->nchan); 3855 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 3856 free(buf, M_DEVBUF); 3857 3858 if (error != 0) 3859 goto fail; 3860 3861 sc->sc_scan_timer = 5; 3862 3863 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3864 3865 return 0; 3866 3867fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3868 3869 return error; 3870} 3871 3872static int 3873wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 3874{ 3875 struct ieee80211com *ic = vap->iv_ic; 3876 struct ieee80211_node *ni = vap->iv_bss; 3877 int error; 3878 3879 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3880 3881 /* Update adapter configuration. */ 3882 sc->rxon.associd = 0; 3883 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 3884 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 3885 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 3886 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3887 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 3888 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3889 if (ic->ic_flags & IEEE80211_F_SHSLOT) 3890 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 3891 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 3892 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 3893 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 3894 sc->rxon.cck_mask = 0; 3895 sc->rxon.ofdm_mask = 0x15; 3896 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 3897 sc->rxon.cck_mask = 0x03; 3898 sc->rxon.ofdm_mask = 0; 3899 } else { 3900 /* Assume 802.11b/g. */ 3901 sc->rxon.cck_mask = 0x0f; 3902 sc->rxon.ofdm_mask = 0x15; 3903 } 3904 3905 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n", 3906 sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask, 3907 sc->rxon.ofdm_mask); 3908 3909 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 3910 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3911 __func__); 3912 } 3913 3914 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3915 3916 return error; 3917} 3918 3919static int 3920wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 3921{ 3922 struct ifnet *ifp = sc->sc_ifp; 3923 struct ieee80211com *ic = ifp->if_l2com; 3924 struct ieee80211vap *vap = ni->ni_vap; 3925 struct wpi_vap *wvp = WPI_VAP(vap); 3926 struct wpi_buf *bcn = &wvp->wv_bcbuf; 3927 struct ieee80211_beacon_offsets bo; 3928 struct wpi_cmd_beacon *cmd; 3929 struct mbuf *m; 3930 int totlen; 3931 3932 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3933 3934 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 3935 return EINVAL; 3936 3937 m = ieee80211_beacon_alloc(ni, &bo); 3938 if (m == NULL) { 3939 device_printf(sc->sc_dev, 3940 "%s: could not allocate beacon frame\n", __func__); 3941 return ENOMEM; 3942 } 3943 totlen = m->m_pkthdr.len; 3944 3945 if (bcn->data == NULL) { 3946 cmd = malloc(sizeof(struct wpi_cmd_beacon), M_DEVBUF, 3947 M_NOWAIT | M_ZERO); 3948 3949 if (cmd == NULL) { 3950 device_printf(sc->sc_dev, 3951 "could not allocate buffer for beacon command\n"); 3952 m_freem(m); 3953 return ENOMEM; 3954 } 3955 3956 cmd->id = WPI_ID_BROADCAST; 3957 cmd->ofdm_mask = 0xff; 3958 cmd->cck_mask = 0x0f; 3959 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 3960 cmd->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 3961 3962 bcn->data = cmd; 3963 bcn->ni = NULL; 3964 bcn->code = WPI_CMD_SET_BEACON; 3965 bcn->ac = 4; 3966 bcn->size = sizeof(struct wpi_cmd_beacon); 3967 } else 3968 cmd = bcn->data; 3969 3970 cmd->len = htole16(totlen); 3971 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3972 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3973 3974 /* NB: m will be freed in wpi_cmd_done() */ 3975 bcn->m = m; 3976 3977 return wpi_cmd2(sc, bcn); 3978} 3979 3980static void 3981wpi_update_beacon(struct ieee80211vap *vap, int item) 3982{ 3983 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 3984 struct ieee80211_node *ni = vap->iv_bss; 3985 int error; 3986 3987 WPI_LOCK(sc); 3988 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 3989 device_printf(sc->sc_dev, 3990 "%s: could not update beacon frame, error %d", __func__, 3991 error); 3992 } 3993 WPI_UNLOCK(sc); 3994} 3995 3996static int 3997wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 3998{ 3999 struct ieee80211com *ic = vap->iv_ic; 4000 struct ieee80211_node *ni = vap->iv_bss; 4001 int error; 4002 4003 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4004 4005 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 4006 /* Link LED blinks while monitoring. */ 4007 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 4008 return 0; 4009 } 4010 4011 /* XXX kernel panic workaround */ 4012 if (ni->ni_chan == IEEE80211_CHAN_ANYC) { 4013 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 4014 __func__); 4015 return EINVAL; 4016 } 4017 4018 if ((error = wpi_set_timing(sc, ni)) != 0) { 4019 device_printf(sc->sc_dev, 4020 "%s: could not set timing, error %d\n", __func__, error); 4021 return error; 4022 } 4023 4024 /* Update adapter configuration. */ 4025 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4026 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 4027 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 4028 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4029 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 4030 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4031 /* Short preamble and slot time are negotiated when associating. */ 4032 sc->rxon.flags &= ~htole32(WPI_RXON_SHPREAMBLE | WPI_RXON_SHSLOT); 4033 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4034 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4035 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4036 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4037 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 4038 sc->rxon.cck_mask = 0; 4039 sc->rxon.ofdm_mask = 0x15; 4040 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 4041 sc->rxon.cck_mask = 0x03; 4042 sc->rxon.ofdm_mask = 0; 4043 } else { 4044 /* Assume 802.11b/g. */ 4045 sc->rxon.cck_mask = 0x0f; 4046 sc->rxon.ofdm_mask = 0x15; 4047 } 4048 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 4049 4050 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 4051 4052 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 4053 sc->rxon.chan, sc->rxon.flags); 4054 4055 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4056 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4057 __func__); 4058 return error; 4059 } 4060 4061 if (vap->iv_opmode == IEEE80211_M_IBSS) { 4062 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 4063 device_printf(sc->sc_dev, 4064 "%s: could not setup beacon, error %d\n", __func__, 4065 error); 4066 return error; 4067 } 4068 } 4069 4070 if (vap->iv_opmode == IEEE80211_M_STA) { 4071 /* Add BSS node. */ 4072 error = wpi_add_sta_node(sc, ni); 4073 if (error != 0) { 4074 device_printf(sc->sc_dev, 4075 "%s: could not add BSS node, error %d\n", __func__, 4076 error); 4077 return error; 4078 } 4079 } 4080 4081 /* Link LED always on while associated. */ 4082 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4083 4084 /* Start periodic calibration timer. */ 4085 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 4086 4087 /* Enable power-saving mode if requested by user. */ 4088 if (vap->iv_flags & IEEE80211_F_PMGTON) 4089 (void)wpi_set_pslevel(sc, 0, 3, 1); 4090 else 4091 (void)wpi_set_pslevel(sc, 0, 0, 1); 4092 4093 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4094 4095 return 0; 4096} 4097 4098static int 4099wpi_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k, 4100 ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix) 4101{ 4102 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 4103 4104 if (!(&vap->iv_nw_keys[0] <= k && 4105 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID])) { 4106 if (k->wk_flags & IEEE80211_KEY_GROUP) { 4107 /* should not happen */ 4108 DPRINTF(sc, WPI_DEBUG_KEY, "%s: bogus group key\n", 4109 __func__); 4110 return 0; 4111 } 4112 *keyix = 0; /* NB: use key index 0 for ucast key */ 4113 } else { 4114 *keyix = *rxkeyix = k - vap->iv_nw_keys; 4115 4116 if (k->wk_cipher->ic_cipher == IEEE80211_CIPHER_AES_CCM) 4117 k->wk_flags |= IEEE80211_KEY_SWCRYPT; 4118 } 4119 return 1; 4120} 4121 4122static int 4123wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k, 4124 const uint8_t mac[IEEE80211_ADDR_LEN]) 4125{ 4126 const struct ieee80211_cipher *cip = k->wk_cipher; 4127 struct ieee80211com *ic = vap->iv_ic; 4128 struct ieee80211_node *ni = vap->iv_bss; 4129 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4130 struct wpi_node *wn = WPI_NODE(ni); 4131 struct wpi_node_info node; 4132 uint16_t kflags; 4133 int error; 4134 4135 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4136 4137 switch (cip->ic_cipher) { 4138 case IEEE80211_CIPHER_AES_CCM: 4139 if (k->wk_flags & IEEE80211_KEY_GROUP) 4140 return 1; 4141 4142 kflags = WPI_KFLAG_CCMP; 4143 break; 4144 default: 4145 /* null_key_set() */ 4146 return 1; 4147 } 4148 4149 if (wn->id == WPI_ID_UNDEFINED) 4150 return 0; 4151 4152 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4153 if (k->wk_flags & IEEE80211_KEY_GROUP) 4154 kflags |= WPI_KFLAG_MULTICAST; 4155 4156 memset(&node, 0, sizeof node); 4157 node.id = wn->id; 4158 node.control = WPI_NODE_UPDATE; 4159 node.flags = WPI_FLAG_KEY_SET; 4160 node.kflags = htole16(kflags); 4161 memcpy(node.key, k->wk_key, k->wk_keylen); 4162 4163 DPRINTF(sc, WPI_DEBUG_KEY, "set key id=%d for node %d\n", k->wk_keyix, 4164 node.id); 4165 4166 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4167 if (error != 0) { 4168 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4169 error); 4170 return 0; 4171 } 4172 4173 return 1; 4174} 4175 4176static int 4177wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4178{ 4179 const struct ieee80211_cipher *cip = k->wk_cipher; 4180 struct ieee80211com *ic = vap->iv_ic; 4181 struct ieee80211_node *ni = vap->iv_bss; 4182 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4183 struct wpi_node *wn = WPI_NODE(ni); 4184 struct wpi_node_info node; 4185 4186 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4187 4188 switch (cip->ic_cipher) { 4189 case IEEE80211_CIPHER_AES_CCM: 4190 break; 4191 default: 4192 /* null_key_delete() */ 4193 return 1; 4194 } 4195 4196 if (vap->iv_state != IEEE80211_S_RUN || 4197 (k->wk_flags & IEEE80211_KEY_GROUP)) 4198 return 1; /* Nothing to do. */ 4199 4200 memset(&node, 0, sizeof node); 4201 node.id = wn->id; 4202 node.control = WPI_NODE_UPDATE; 4203 node.flags = WPI_FLAG_KEY_SET; 4204 4205 DPRINTF(sc, WPI_DEBUG_KEY, "delete keys for node %d\n", node.id); 4206 (void)wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4207 4208 return 1; 4209} 4210 4211/* 4212 * This function is called after the runtime firmware notifies us of its 4213 * readiness (called in a process context). 4214 */ 4215static int 4216wpi_post_alive(struct wpi_softc *sc) 4217{ 4218 int ntries, error; 4219 4220 /* Check (again) that the radio is not disabled. */ 4221 if ((error = wpi_nic_lock(sc)) != 0) 4222 return error; 4223 4224 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4225 4226 /* NB: Runtime firmware must be up and running. */ 4227 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4228 device_printf(sc->sc_dev, 4229 "RF switch: radio disabled (%s)\n", __func__); 4230 wpi_nic_unlock(sc); 4231 return EPERM; /* :-) */ 4232 } 4233 wpi_nic_unlock(sc); 4234 4235 /* Wait for thermal sensor to calibrate. */ 4236 for (ntries = 0; ntries < 1000; ntries++) { 4237 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4238 break; 4239 DELAY(10); 4240 } 4241 4242 if (ntries == 1000) { 4243 device_printf(sc->sc_dev, 4244 "timeout waiting for thermal sensor calibration\n"); 4245 return ETIMEDOUT; 4246 } 4247 4248 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4249 return 0; 4250} 4251 4252/* 4253 * The firmware boot code is small and is intended to be copied directly into 4254 * the NIC internal memory (no DMA transfer). 4255 */ 4256static int 4257wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 4258{ 4259 int error, ntries; 4260 4261 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4262 4263 size /= sizeof (uint32_t); 4264 4265 if ((error = wpi_nic_lock(sc)) != 0) 4266 return error; 4267 4268 /* Copy microcode image into NIC memory. */ 4269 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4270 (const uint32_t *)ucode, size); 4271 4272 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4273 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4274 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4275 4276 /* Start boot load now. */ 4277 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4278 4279 /* Wait for transfer to complete. */ 4280 for (ntries = 0; ntries < 1000; ntries++) { 4281 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4282 DPRINTF(sc, WPI_DEBUG_HW, 4283 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4284 WPI_FH_TX_STATUS_IDLE(6), 4285 status & WPI_FH_TX_STATUS_IDLE(6)); 4286 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4287 DPRINTF(sc, WPI_DEBUG_HW, 4288 "Status Match! - ntries = %d\n", ntries); 4289 break; 4290 } 4291 DELAY(10); 4292 } 4293 if (ntries == 1000) { 4294 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4295 __func__); 4296 wpi_nic_unlock(sc); 4297 return ETIMEDOUT; 4298 } 4299 4300 /* Enable boot after power up. */ 4301 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4302 4303 wpi_nic_unlock(sc); 4304 return 0; 4305} 4306 4307static int 4308wpi_load_firmware(struct wpi_softc *sc) 4309{ 4310 struct wpi_fw_info *fw = &sc->fw; 4311 struct wpi_dma_info *dma = &sc->fw_dma; 4312 int error; 4313 4314 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4315 4316 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4317 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4318 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4319 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4320 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4321 4322 /* Tell adapter where to find initialization sections. */ 4323 if ((error = wpi_nic_lock(sc)) != 0) 4324 return error; 4325 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4326 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4327 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4328 dma->paddr + WPI_FW_DATA_MAXSZ); 4329 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4330 wpi_nic_unlock(sc); 4331 4332 /* Load firmware boot code. */ 4333 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4334 if (error != 0) { 4335 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4336 __func__); 4337 return error; 4338 } 4339 4340 /* Now press "execute". */ 4341 WPI_WRITE(sc, WPI_RESET, 0); 4342 4343 /* Wait at most one second for first alive notification. */ 4344 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4345 device_printf(sc->sc_dev, 4346 "%s: timeout waiting for adapter to initialize, error %d\n", 4347 __func__, error); 4348 return error; 4349 } 4350 4351 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4352 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4353 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4354 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4355 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4356 4357 /* Tell adapter where to find runtime sections. */ 4358 if ((error = wpi_nic_lock(sc)) != 0) 4359 return error; 4360 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4361 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 4362 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4363 dma->paddr + WPI_FW_DATA_MAXSZ); 4364 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 4365 WPI_FW_UPDATED | fw->main.textsz); 4366 wpi_nic_unlock(sc); 4367 4368 return 0; 4369} 4370 4371static int 4372wpi_read_firmware(struct wpi_softc *sc) 4373{ 4374 const struct firmware *fp; 4375 struct wpi_fw_info *fw = &sc->fw; 4376 const struct wpi_firmware_hdr *hdr; 4377 int error; 4378 4379 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4380 4381 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4382 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 4383 4384 WPI_UNLOCK(sc); 4385 fp = firmware_get(WPI_FW_NAME); 4386 WPI_LOCK(sc); 4387 4388 if (fp == NULL) { 4389 device_printf(sc->sc_dev, 4390 "could not load firmware image '%s'\n", WPI_FW_NAME); 4391 return EINVAL; 4392 } 4393 4394 sc->fw_fp = fp; 4395 4396 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 4397 device_printf(sc->sc_dev, 4398 "firmware file too short: %zu bytes\n", fp->datasize); 4399 error = EINVAL; 4400 goto fail; 4401 } 4402 4403 fw->size = fp->datasize; 4404 fw->data = (const uint8_t *)fp->data; 4405 4406 /* Extract firmware header information. */ 4407 hdr = (const struct wpi_firmware_hdr *)fw->data; 4408 4409 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 4410 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 4411 4412 fw->main.textsz = le32toh(hdr->rtextsz); 4413 fw->main.datasz = le32toh(hdr->rdatasz); 4414 fw->init.textsz = le32toh(hdr->itextsz); 4415 fw->init.datasz = le32toh(hdr->idatasz); 4416 fw->boot.textsz = le32toh(hdr->btextsz); 4417 fw->boot.datasz = 0; 4418 4419 /* Sanity-check firmware header. */ 4420 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 4421 fw->main.datasz > WPI_FW_DATA_MAXSZ || 4422 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 4423 fw->init.datasz > WPI_FW_DATA_MAXSZ || 4424 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 4425 (fw->boot.textsz & 3) != 0) { 4426 device_printf(sc->sc_dev, "invalid firmware header\n"); 4427 error = EINVAL; 4428 goto fail; 4429 } 4430 4431 /* Check that all firmware sections fit. */ 4432 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 4433 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 4434 device_printf(sc->sc_dev, 4435 "firmware file too short: %zu bytes\n", fw->size); 4436 error = EINVAL; 4437 goto fail; 4438 } 4439 4440 /* Get pointers to firmware sections. */ 4441 fw->main.text = (const uint8_t *)(hdr + 1); 4442 fw->main.data = fw->main.text + fw->main.textsz; 4443 fw->init.text = fw->main.data + fw->main.datasz; 4444 fw->init.data = fw->init.text + fw->init.textsz; 4445 fw->boot.text = fw->init.data + fw->init.datasz; 4446 4447 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4448 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 4449 "runtime (text: %u, data: %u) init (text: %u, data %u) " 4450 "boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver), 4451 fw->main.textsz, fw->main.datasz, 4452 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 4453 4454 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 4455 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 4456 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 4457 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 4458 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 4459 4460 return 0; 4461 4462fail: wpi_unload_firmware(sc); 4463 return error; 4464} 4465 4466/** 4467 * Free the referenced firmware image 4468 */ 4469static void 4470wpi_unload_firmware(struct wpi_softc *sc) 4471{ 4472 if (sc->fw_fp != NULL) { 4473 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 4474 sc->fw_fp = NULL; 4475 } 4476} 4477 4478static int 4479wpi_clock_wait(struct wpi_softc *sc) 4480{ 4481 int ntries; 4482 4483 /* Set "initialization complete" bit. */ 4484 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4485 4486 /* Wait for clock stabilization. */ 4487 for (ntries = 0; ntries < 2500; ntries++) { 4488 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 4489 return 0; 4490 DELAY(100); 4491 } 4492 device_printf(sc->sc_dev, 4493 "%s: timeout waiting for clock stabilization\n", __func__); 4494 4495 return ETIMEDOUT; 4496} 4497 4498static int 4499wpi_apm_init(struct wpi_softc *sc) 4500{ 4501 uint32_t reg; 4502 int error; 4503 4504 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4505 4506 /* Disable L0s exit timer (NMI bug workaround). */ 4507 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 4508 /* Don't wait for ICH L0s (ICH bug workaround). */ 4509 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 4510 4511 /* Set FH wait threshold to max (HW bug under stress workaround). */ 4512 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 4513 4514 /* Retrieve PCIe Active State Power Management (ASPM). */ 4515 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 4516 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 4517 if (reg & 0x02) /* L1 Entry enabled. */ 4518 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4519 else 4520 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4521 4522 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 4523 4524 /* Wait for clock stabilization before accessing prph. */ 4525 if ((error = wpi_clock_wait(sc)) != 0) 4526 return error; 4527 4528 if ((error = wpi_nic_lock(sc)) != 0) 4529 return error; 4530 /* Enable DMA and BSM (Bootstrap State Machine). */ 4531 wpi_prph_write(sc, WPI_APMG_CLK_EN, 4532 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 4533 DELAY(20); 4534 /* Disable L1-Active. */ 4535 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 4536 /* ??? */ 4537 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000E00); 4538 wpi_nic_unlock(sc); 4539 4540 return 0; 4541} 4542 4543static void 4544wpi_apm_stop_master(struct wpi_softc *sc) 4545{ 4546 int ntries; 4547 4548 /* Stop busmaster DMA activity. */ 4549 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 4550 4551 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 4552 WPI_GP_CNTRL_MAC_PS) 4553 return; /* Already asleep. */ 4554 4555 for (ntries = 0; ntries < 100; ntries++) { 4556 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 4557 return; 4558 DELAY(10); 4559 } 4560 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", 4561 __func__); 4562} 4563 4564static void 4565wpi_apm_stop(struct wpi_softc *sc) 4566{ 4567 wpi_apm_stop_master(sc); 4568 4569 /* Reset the entire device. */ 4570 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 4571 DELAY(10); 4572 /* Clear "initialization complete" bit. */ 4573 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4574} 4575 4576static void 4577wpi_nic_config(struct wpi_softc *sc) 4578{ 4579 uint32_t rev; 4580 4581 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4582 4583 /* voodoo from the Linux "driver".. */ 4584 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 4585 if ((rev & 0xc0) == 0x40) 4586 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 4587 else if (!(rev & 0x80)) 4588 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 4589 4590 if (sc->cap == 0x80) 4591 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 4592 4593 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 4594 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4595 else 4596 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4597 4598 if (sc->type > 1) 4599 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 4600} 4601 4602static int 4603wpi_hw_init(struct wpi_softc *sc) 4604{ 4605 int chnl, ntries, error; 4606 4607 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4608 4609 /* Clear pending interrupts. */ 4610 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4611 4612 if ((error = wpi_apm_init(sc)) != 0) { 4613 device_printf(sc->sc_dev, 4614 "%s: could not power ON adapter, error %d\n", __func__, 4615 error); 4616 return error; 4617 } 4618 4619 /* Select VMAIN power source. */ 4620 if ((error = wpi_nic_lock(sc)) != 0) 4621 return error; 4622 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 4623 wpi_nic_unlock(sc); 4624 /* Spin until VMAIN gets selected. */ 4625 for (ntries = 0; ntries < 5000; ntries++) { 4626 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 4627 break; 4628 DELAY(10); 4629 } 4630 if (ntries == 5000) { 4631 device_printf(sc->sc_dev, "timeout selecting power source\n"); 4632 return ETIMEDOUT; 4633 } 4634 4635 /* Perform adapter initialization. */ 4636 wpi_nic_config(sc); 4637 4638 /* Initialize RX ring. */ 4639 if ((error = wpi_nic_lock(sc)) != 0) 4640 return error; 4641 /* Set physical address of RX ring. */ 4642 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 4643 /* Set physical address of RX read pointer. */ 4644 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 4645 offsetof(struct wpi_shared, next)); 4646 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 4647 /* Enable RX. */ 4648 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 4649 WPI_FH_RX_CONFIG_DMA_ENA | 4650 WPI_FH_RX_CONFIG_RDRBD_ENA | 4651 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 4652 WPI_FH_RX_CONFIG_MAXFRAG | 4653 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 4654 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 4655 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 4656 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 4657 wpi_nic_unlock(sc); 4658 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 4659 4660 /* Initialize TX rings. */ 4661 if ((error = wpi_nic_lock(sc)) != 0) 4662 return error; 4663 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 4664 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 4665 /* Enable all 6 TX rings. */ 4666 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 4667 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 4668 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 4669 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 4670 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 4671 /* Set physical address of TX rings. */ 4672 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 4673 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 4674 4675 /* Enable all DMA channels. */ 4676 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 4677 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 4678 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 4679 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 4680 } 4681 wpi_nic_unlock(sc); 4682 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 4683 4684 /* Clear "radio off" and "commands blocked" bits. */ 4685 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4686 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 4687 4688 /* Clear pending interrupts. */ 4689 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4690 /* Enable interrupts. */ 4691 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 4692 4693 /* _Really_ make sure "radio off" bit is cleared! */ 4694 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4695 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4696 4697 if ((error = wpi_load_firmware(sc)) != 0) { 4698 device_printf(sc->sc_dev, 4699 "%s: could not load firmware, error %d\n", __func__, 4700 error); 4701 return error; 4702 } 4703 /* Wait at most one second for firmware alive notification. */ 4704 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4705 device_printf(sc->sc_dev, 4706 "%s: timeout waiting for adapter to initialize, error %d\n", 4707 __func__, error); 4708 return error; 4709 } 4710 4711 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4712 4713 /* Do post-firmware initialization. */ 4714 return wpi_post_alive(sc); 4715} 4716 4717static void 4718wpi_hw_stop(struct wpi_softc *sc) 4719{ 4720 int chnl, qid, ntries; 4721 4722 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4723 4724 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 4725 wpi_nic_lock(sc); 4726 4727 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 4728 4729 /* Disable interrupts. */ 4730 WPI_WRITE(sc, WPI_INT_MASK, 0); 4731 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4732 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 4733 4734 /* Make sure we no longer hold the NIC lock. */ 4735 wpi_nic_unlock(sc); 4736 4737 if (wpi_nic_lock(sc) == 0) { 4738 /* Stop TX scheduler. */ 4739 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 4740 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 4741 4742 /* Stop all DMA channels. */ 4743 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 4744 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 4745 for (ntries = 0; ntries < 200; ntries++) { 4746 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 4747 WPI_FH_TX_STATUS_IDLE(chnl)) 4748 break; 4749 DELAY(10); 4750 } 4751 } 4752 wpi_nic_unlock(sc); 4753 } 4754 4755 /* Stop RX ring. */ 4756 wpi_reset_rx_ring(sc); 4757 4758 /* Reset all TX rings. */ 4759 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 4760 wpi_reset_tx_ring(sc, &sc->txq[qid]); 4761 4762 if (wpi_nic_lock(sc) == 0) { 4763 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 4764 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 4765 wpi_nic_unlock(sc); 4766 } 4767 DELAY(5); 4768 /* Power OFF adapter. */ 4769 wpi_apm_stop(sc); 4770} 4771 4772static void 4773wpi_radio_on(void *arg0, int pending) 4774{ 4775 struct wpi_softc *sc = arg0; 4776 struct ifnet *ifp = sc->sc_ifp; 4777 struct ieee80211com *ic = ifp->if_l2com; 4778 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4779 4780 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 4781 4782 if (vap != NULL) { 4783 wpi_init(sc); 4784 ieee80211_init(vap); 4785 } 4786 4787 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) { 4788 WPI_LOCK(sc); 4789 callout_stop(&sc->watchdog_rfkill); 4790 WPI_UNLOCK(sc); 4791 } 4792} 4793 4794static void 4795wpi_radio_off(void *arg0, int pending) 4796{ 4797 struct wpi_softc *sc = arg0; 4798 struct ifnet *ifp = sc->sc_ifp; 4799 struct ieee80211com *ic = ifp->if_l2com; 4800 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4801 4802 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 4803 4804 wpi_stop(sc); 4805 if (vap != NULL) 4806 ieee80211_stop(vap); 4807 4808 WPI_LOCK(sc); 4809 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 4810 WPI_UNLOCK(sc); 4811} 4812 4813static void 4814wpi_init_locked(struct wpi_softc *sc) 4815{ 4816 struct ifnet *ifp = sc->sc_ifp; 4817 int error; 4818 4819 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4820 4821 WPI_LOCK_ASSERT(sc); 4822 4823 /* Check that the radio is not disabled by hardware switch. */ 4824 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 4825 device_printf(sc->sc_dev, 4826 "RF switch: radio disabled (%s)\n", __func__); 4827 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 4828 sc); 4829 return; 4830 } 4831 4832 /* Read firmware images from the filesystem. */ 4833 if ((error = wpi_read_firmware(sc)) != 0) { 4834 device_printf(sc->sc_dev, 4835 "%s: could not read firmware, error %d\n", __func__, 4836 error); 4837 goto fail; 4838 } 4839 4840 /* Initialize hardware and upload firmware. */ 4841 error = wpi_hw_init(sc); 4842 wpi_unload_firmware(sc); 4843 if (error != 0) { 4844 device_printf(sc->sc_dev, 4845 "%s: could not initialize hardware, error %d\n", __func__, 4846 error); 4847 goto fail; 4848 } 4849 4850 /* Configure adapter now that it is ready. */ 4851 sc->txq_active = 1; 4852 if ((error = wpi_config(sc)) != 0) { 4853 device_printf(sc->sc_dev, 4854 "%s: could not configure device, error %d\n", __func__, 4855 error); 4856 goto fail; 4857 } 4858 4859 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 4860 ifp->if_drv_flags |= IFF_DRV_RUNNING; 4861 4862 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 4863 4864 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4865 4866 return; 4867 4868fail: wpi_stop_locked(sc); 4869 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4870} 4871 4872static void 4873wpi_init(void *arg) 4874{ 4875 struct wpi_softc *sc = arg; 4876 struct ifnet *ifp = sc->sc_ifp; 4877 struct ieee80211com *ic = ifp->if_l2com; 4878 4879 WPI_LOCK(sc); 4880 wpi_init_locked(sc); 4881 WPI_UNLOCK(sc); 4882 4883 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 4884 ieee80211_start_all(ic); 4885} 4886 4887static void 4888wpi_stop_locked(struct wpi_softc *sc) 4889{ 4890 struct ifnet *ifp = sc->sc_ifp; 4891 4892 WPI_LOCK_ASSERT(sc); 4893 4894 WPI_TXQ_LOCK(sc); 4895 sc->txq_active = 0; 4896 WPI_TXQ_UNLOCK(sc); 4897 4898 sc->sc_scan_timer = 0; 4899 sc->sc_tx_timer = 0; 4900 callout_stop(&sc->watchdog_to); 4901 callout_stop(&sc->calib_to); 4902 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 4903 4904 /* Power OFF hardware. */ 4905 wpi_hw_stop(sc); 4906} 4907 4908static void 4909wpi_stop(struct wpi_softc *sc) 4910{ 4911 WPI_LOCK(sc); 4912 wpi_stop_locked(sc); 4913 WPI_UNLOCK(sc); 4914} 4915 4916/* 4917 * Callback from net80211 to start a scan. 4918 */ 4919static void 4920wpi_scan_start(struct ieee80211com *ic) 4921{ 4922 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4923 4924 WPI_LOCK(sc); 4925 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 4926 WPI_UNLOCK(sc); 4927} 4928 4929/* 4930 * Callback from net80211 to terminate a scan. 4931 */ 4932static void 4933wpi_scan_end(struct ieee80211com *ic) 4934{ 4935 struct ifnet *ifp = ic->ic_ifp; 4936 struct wpi_softc *sc = ifp->if_softc; 4937 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4938 4939 if (vap->iv_state == IEEE80211_S_RUN) { 4940 WPI_LOCK(sc); 4941 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4942 WPI_UNLOCK(sc); 4943 } 4944} 4945 4946/** 4947 * Called by the net80211 framework to indicate to the driver 4948 * that the channel should be changed 4949 */ 4950static void 4951wpi_set_channel(struct ieee80211com *ic) 4952{ 4953 const struct ieee80211_channel *c = ic->ic_curchan; 4954 struct ifnet *ifp = ic->ic_ifp; 4955 struct wpi_softc *sc = ifp->if_softc; 4956 int error; 4957 4958 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4959 4960 WPI_LOCK(sc); 4961 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 4962 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 4963 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 4964 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 4965 4966 /* 4967 * Only need to set the channel in Monitor mode. AP scanning and auth 4968 * are already taken care of by their respective firmware commands. 4969 */ 4970 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 4971 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4972 if (IEEE80211_IS_CHAN_2GHZ(c)) { 4973 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 4974 WPI_RXON_24GHZ); 4975 } else { 4976 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 4977 WPI_RXON_24GHZ); 4978 } 4979 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) 4980 device_printf(sc->sc_dev, 4981 "%s: error %d settting channel\n", __func__, 4982 error); 4983 } 4984 WPI_UNLOCK(sc); 4985} 4986 4987/** 4988 * Called by net80211 to indicate that we need to scan the current 4989 * channel. The channel is previously be set via the wpi_set_channel 4990 * callback. 4991 */ 4992static void 4993wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 4994{ 4995 struct ieee80211vap *vap = ss->ss_vap; 4996 struct ieee80211com *ic = vap->iv_ic; 4997 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4998 int error; 4999 5000 if (sc->rxon.chan != ieee80211_chan2ieee(ic, ic->ic_curchan)) { 5001 WPI_LOCK(sc); 5002 error = wpi_scan(sc, ic->ic_curchan); 5003 WPI_UNLOCK(sc); 5004 if (error != 0) 5005 ieee80211_cancel_scan(vap); 5006 } else { 5007 /* Send probe request when associated. */ 5008 sc->sc_scan_curchan(ss, maxdwell); 5009 } 5010} 5011 5012/** 5013 * Called by the net80211 framework to indicate 5014 * the minimum dwell time has been met, terminate the scan. 5015 * We don't actually terminate the scan as the firmware will notify 5016 * us when it's finished and we have no way to interrupt it. 5017 */ 5018static void 5019wpi_scan_mindwell(struct ieee80211_scan_state *ss) 5020{ 5021 /* NB: don't try to abort scan; wait for firmware to finish */ 5022} 5023 5024static void 5025wpi_hw_reset(void *arg, int pending) 5026{ 5027 struct wpi_softc *sc = arg; 5028 struct ifnet *ifp = sc->sc_ifp; 5029 struct ieee80211com *ic = ifp->if_l2com; 5030 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5031 5032 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5033 5034 wpi_stop(sc); 5035 if (vap != NULL) 5036 ieee80211_stop(vap); 5037 wpi_init(sc); 5038 if (vap != NULL) 5039 ieee80211_init(vap); 5040} 5041