if_wpi.c revision 280070
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 280070 2015-03-15 20:35:25Z adrian $"); 21 22/* 23 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 24 * 25 * The 3945ABG network adapter doesn't use traditional hardware as 26 * many other adaptors do. Instead at run time the eeprom is set into a known 27 * state and told to load boot firmware. The boot firmware loads an init and a 28 * main binary firmware image into SRAM on the card via DMA. 29 * Once the firmware is loaded, the driver/hw then 30 * communicate by way of circular dma rings via the SRAM to the firmware. 31 * 32 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 33 * The 4 tx data rings allow for prioritization QoS. 34 * 35 * The rx data ring consists of 32 dma buffers. Two registers are used to 36 * indicate where in the ring the driver and the firmware are up to. The 37 * driver sets the initial read index (reg1) and the initial write index (reg2), 38 * the firmware updates the read index (reg1) on rx of a packet and fires an 39 * interrupt. The driver then processes the buffers starting at reg1 indicating 40 * to the firmware which buffers have been accessed by updating reg2. At the 41 * same time allocating new memory for the processed buffer. 42 * 43 * A similar thing happens with the tx rings. The difference is the firmware 44 * stop processing buffers once the queue is full and until confirmation 45 * of a successful transmition (tx_done) has occurred. 46 * 47 * The command ring operates in the same manner as the tx queues. 48 * 49 * All communication direct to the card (ie eeprom) is classed as Stage1 50 * communication 51 * 52 * All communication via the firmware to the card is classed as State2. 53 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 54 * firmware. The bootstrap firmware and runtime firmware are loaded 55 * from host memory via dma to the card then told to execute. From this point 56 * on the majority of communications between the driver and the card goes 57 * via the firmware. 58 */ 59 60#include "opt_wlan.h" 61#include "opt_wpi.h" 62 63#include <sys/param.h> 64#include <sys/sysctl.h> 65#include <sys/sockio.h> 66#include <sys/mbuf.h> 67#include <sys/kernel.h> 68#include <sys/socket.h> 69#include <sys/systm.h> 70#include <sys/malloc.h> 71#include <sys/queue.h> 72#include <sys/taskqueue.h> 73#include <sys/module.h> 74#include <sys/bus.h> 75#include <sys/endian.h> 76#include <sys/linker.h> 77#include <sys/firmware.h> 78 79#include <machine/bus.h> 80#include <machine/resource.h> 81#include <sys/rman.h> 82 83#include <dev/pci/pcireg.h> 84#include <dev/pci/pcivar.h> 85 86#include <net/bpf.h> 87#include <net/if.h> 88#include <net/if_var.h> 89#include <net/if_arp.h> 90#include <net/ethernet.h> 91#include <net/if_dl.h> 92#include <net/if_media.h> 93#include <net/if_types.h> 94 95#include <netinet/in.h> 96#include <netinet/in_systm.h> 97#include <netinet/in_var.h> 98#include <netinet/if_ether.h> 99#include <netinet/ip.h> 100 101#include <net80211/ieee80211_var.h> 102#include <net80211/ieee80211_radiotap.h> 103#include <net80211/ieee80211_regdomain.h> 104#include <net80211/ieee80211_ratectl.h> 105 106#include <dev/wpi/if_wpireg.h> 107#include <dev/wpi/if_wpivar.h> 108#include <dev/wpi/if_wpi_debug.h> 109 110struct wpi_ident { 111 uint16_t vendor; 112 uint16_t device; 113 uint16_t subdevice; 114 const char *name; 115}; 116 117static const struct wpi_ident wpi_ident_table[] = { 118 /* The below entries support ABG regardless of the subid */ 119 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 120 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 121 /* The below entries only support BG */ 122 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 123 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 124 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 125 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 126 { 0, 0, 0, NULL } 127}; 128 129static int wpi_probe(device_t); 130static int wpi_attach(device_t); 131static void wpi_radiotap_attach(struct wpi_softc *); 132static void wpi_sysctlattach(struct wpi_softc *); 133static 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); 387 388 /* Allocate DMA memory for firmware transfers. */ 389 if ((error = wpi_alloc_fwmem(sc)) != 0) { 390 device_printf(dev, 391 "could not allocate memory for firmware, error %d\n", 392 error); 393 goto fail; 394 } 395 396 /* Allocate shared page. */ 397 if ((error = wpi_alloc_shared(sc)) != 0) { 398 device_printf(dev, "could not allocate shared page\n"); 399 goto fail; 400 } 401 402 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 403 for (i = 0; i < WPI_NTXQUEUES; i++) { 404 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 405 device_printf(dev, 406 "could not allocate TX ring %d, error %d\n", i, 407 error); 408 goto fail; 409 } 410 } 411 412 /* Allocate RX ring. */ 413 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 414 device_printf(dev, "could not allocate RX ring, error %d\n", 415 error); 416 goto fail; 417 } 418 419 /* Clear pending interrupts. */ 420 WPI_WRITE(sc, WPI_INT, 0xffffffff); 421 422 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 423 if (ifp == NULL) { 424 device_printf(dev, "can not allocate ifnet structure\n"); 425 goto fail; 426 } 427 428 ic = ifp->if_l2com; 429 ic->ic_ifp = ifp; 430 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 431 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 432 433 /* Set device capabilities. */ 434 ic->ic_caps = 435 IEEE80211_C_STA /* station mode supported */ 436 | IEEE80211_C_IBSS /* IBSS mode supported */ 437 | IEEE80211_C_MONITOR /* monitor mode supported */ 438 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 439 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 440 | IEEE80211_C_TXPMGT /* tx power management */ 441 | IEEE80211_C_SHSLOT /* short slot time supported */ 442 | IEEE80211_C_WPA /* 802.11i */ 443 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 444#if 0 445 | IEEE80211_C_HOSTAP /* Host access point mode */ 446#endif 447 | IEEE80211_C_WME /* 802.11e */ 448 | IEEE80211_C_PMGT /* Station-side power mgmt */ 449 ; 450 451 ic->ic_cryptocaps = 452 IEEE80211_CRYPTO_AES_CCM; 453 454 /* 455 * Read in the eeprom and also setup the channels for 456 * net80211. We don't set the rates as net80211 does this for us 457 */ 458 if ((error = wpi_read_eeprom(sc, macaddr)) != 0) { 459 device_printf(dev, "could not read EEPROM, error %d\n", 460 error); 461 goto fail; 462 } 463 464#ifdef WPI_DEBUG 465 if (bootverbose) { 466 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", 467 sc->domain); 468 device_printf(sc->sc_dev, "Hardware Type: %c\n", 469 sc->type > 1 ? 'B': '?'); 470 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 471 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 472 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 473 supportsa ? "does" : "does not"); 474 475 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must 476 check what sc->rev really represents - benjsc 20070615 */ 477 } 478#endif 479 480 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 481 ifp->if_softc = sc; 482 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 483 ifp->if_init = wpi_init; 484 ifp->if_ioctl = wpi_ioctl; 485 ifp->if_start = wpi_start; 486 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 487 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 488 IFQ_SET_READY(&ifp->if_snd); 489 490 ieee80211_ifattach(ic, macaddr); 491 ic->ic_vap_create = wpi_vap_create; 492 ic->ic_vap_delete = wpi_vap_delete; 493 ic->ic_raw_xmit = wpi_raw_xmit; 494 ic->ic_node_alloc = wpi_node_alloc; 495 sc->sc_node_free = ic->ic_node_free; 496 ic->ic_node_free = wpi_node_free; 497 ic->ic_wme.wme_update = wpi_updateedca; 498 ic->ic_update_promisc = wpi_update_promisc; 499 ic->ic_update_mcast = wpi_update_mcast; 500 ic->ic_scan_start = wpi_scan_start; 501 ic->ic_scan_end = wpi_scan_end; 502 ic->ic_set_channel = wpi_set_channel; 503 sc->sc_scan_curchan = ic->ic_scan_curchan; 504 ic->ic_scan_curchan = wpi_scan_curchan; 505 ic->ic_scan_mindwell = wpi_scan_mindwell; 506 ic->ic_setregdomain = wpi_setregdomain; 507 508 wpi_radiotap_attach(sc); 509 510 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 511 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 512 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 513 TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc); 514 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 515 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 516 517 wpi_sysctlattach(sc); 518 519 /* 520 * Hook our interrupt after all initialization is complete. 521 */ 522 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 523 NULL, wpi_intr, sc, &sc->sc_ih); 524 if (error != 0) { 525 device_printf(dev, "can't establish interrupt, error %d\n", 526 error); 527 goto fail; 528 } 529 530 if (bootverbose) 531 ieee80211_announce(ic); 532 533#ifdef WPI_DEBUG 534 if (sc->sc_debug & WPI_DEBUG_HW) 535 ieee80211_announce_channels(ic); 536#endif 537 538 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 539 return 0; 540 541fail: wpi_detach(dev); 542 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 543 return error; 544} 545 546/* 547 * Attach the interface to 802.11 radiotap. 548 */ 549static void 550wpi_radiotap_attach(struct wpi_softc *sc) 551{ 552 struct ifnet *ifp = sc->sc_ifp; 553 struct ieee80211com *ic = ifp->if_l2com; 554 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 555 ieee80211_radiotap_attach(ic, 556 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 557 WPI_TX_RADIOTAP_PRESENT, 558 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 559 WPI_RX_RADIOTAP_PRESENT); 560 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 561} 562 563static void 564wpi_sysctlattach(struct wpi_softc *sc) 565{ 566#ifdef WPI_DEBUG 567 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 568 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 569 570 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 571 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 572 "control debugging printfs"); 573#endif 574} 575 576static struct ieee80211vap * 577wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 578 enum ieee80211_opmode opmode, int flags, 579 const uint8_t bssid[IEEE80211_ADDR_LEN], 580 const uint8_t mac[IEEE80211_ADDR_LEN]) 581{ 582 struct wpi_vap *wvp; 583 struct wpi_buf *bcn; 584 struct ieee80211vap *vap; 585 586 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 587 return NULL; 588 589 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 590 M_80211_VAP, M_NOWAIT | M_ZERO); 591 if (wvp == NULL) 592 return NULL; 593 vap = &wvp->vap; 594 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 595 596 bcn = &wvp->wv_bcbuf; 597 bcn->data = NULL; 598 599 /* Override with driver methods. */ 600 wvp->newstate = vap->iv_newstate; 601 vap->iv_key_alloc = wpi_key_alloc; 602 vap->iv_key_set = wpi_key_set; 603 vap->iv_key_delete = wpi_key_delete; 604 vap->iv_newstate = wpi_newstate; 605 vap->iv_update_beacon = wpi_update_beacon; 606 607 ieee80211_ratectl_init(vap); 608 /* Complete setup. */ 609 ieee80211_vap_attach(vap, ieee80211_media_change, 610 ieee80211_media_status); 611 ic->ic_opmode = opmode; 612 return vap; 613} 614 615static void 616wpi_vap_delete(struct ieee80211vap *vap) 617{ 618 struct wpi_vap *wvp = WPI_VAP(vap); 619 struct wpi_buf *bcn = &wvp->wv_bcbuf; 620 621 ieee80211_ratectl_deinit(vap); 622 ieee80211_vap_detach(vap); 623 624 if (bcn->data != NULL) 625 free(bcn->data, M_DEVBUF); 626 free(wvp, M_80211_VAP); 627} 628 629static int 630wpi_detach(device_t dev) 631{ 632 struct wpi_softc *sc = device_get_softc(dev); 633 struct ifnet *ifp = sc->sc_ifp; 634 struct ieee80211com *ic; 635 int qid; 636 637 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 638 639 if (ifp != NULL) { 640 ic = ifp->if_l2com; 641 642 ieee80211_draintask(ic, &sc->sc_reinittask); 643 ieee80211_draintask(ic, &sc->sc_radiooff_task); 644 ieee80211_draintask(ic, &sc->sc_radioon_task); 645 646 wpi_stop(sc); 647 648 callout_drain(&sc->watchdog_to); 649 callout_drain(&sc->watchdog_rfkill); 650 callout_drain(&sc->calib_to); 651 ieee80211_ifdetach(ic); 652 } 653 654 /* Uninstall interrupt handler. */ 655 if (sc->irq != NULL) { 656 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 657 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 658 sc->irq); 659 pci_release_msi(dev); 660 } 661 662 if (sc->txq[0].data_dmat) { 663 /* Free DMA resources. */ 664 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 665 wpi_free_tx_ring(sc, &sc->txq[qid]); 666 667 wpi_free_rx_ring(sc); 668 wpi_free_shared(sc); 669 } 670 671 if (sc->fw_dma.tag) 672 wpi_free_fwmem(sc); 673 674 if (sc->mem != NULL) 675 bus_release_resource(dev, SYS_RES_MEMORY, 676 rman_get_rid(sc->mem), sc->mem); 677 678 if (ifp != NULL) 679 if_free(ifp); 680 681 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 682 WPI_LOCK_DESTROY(sc); 683 return 0; 684} 685 686static int 687wpi_shutdown(device_t dev) 688{ 689 struct wpi_softc *sc = device_get_softc(dev); 690 691 wpi_stop(sc); 692 return 0; 693} 694 695static int 696wpi_suspend(device_t dev) 697{ 698 struct wpi_softc *sc = device_get_softc(dev); 699 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 700 701 ieee80211_suspend_all(ic); 702 return 0; 703} 704 705static int 706wpi_resume(device_t dev) 707{ 708 struct wpi_softc *sc = device_get_softc(dev); 709 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 710 711 /* Clear device-specific "PCI retry timeout" register (41h). */ 712 pci_write_config(dev, 0x41, 0, 1); 713 714 ieee80211_resume_all(ic); 715 return 0; 716} 717 718/* 719 * Grab exclusive access to NIC memory. 720 */ 721static int 722wpi_nic_lock(struct wpi_softc *sc) 723{ 724 int ntries; 725 726 /* Request exclusive access to NIC. */ 727 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 728 729 /* Spin until we actually get the lock. */ 730 for (ntries = 0; ntries < 1000; ntries++) { 731 if ((WPI_READ(sc, WPI_GP_CNTRL) & 732 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 733 WPI_GP_CNTRL_MAC_ACCESS_ENA) 734 return 0; 735 DELAY(10); 736 } 737 738 device_printf(sc->sc_dev, "could not lock memory\n"); 739 740 return ETIMEDOUT; 741} 742 743/* 744 * Release lock on NIC memory. 745 */ 746static __inline void 747wpi_nic_unlock(struct wpi_softc *sc) 748{ 749 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 750} 751 752static __inline uint32_t 753wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 754{ 755 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 756 WPI_BARRIER_READ_WRITE(sc); 757 return WPI_READ(sc, WPI_PRPH_RDATA); 758} 759 760static __inline void 761wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 762{ 763 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 764 WPI_BARRIER_WRITE(sc); 765 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 766} 767 768static __inline void 769wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 770{ 771 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 772} 773 774static __inline void 775wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 776{ 777 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 778} 779 780static __inline void 781wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 782 const uint32_t *data, int count) 783{ 784 for (; count > 0; count--, data++, addr += 4) 785 wpi_prph_write(sc, addr, *data); 786} 787 788static __inline uint32_t 789wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 790{ 791 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 792 WPI_BARRIER_READ_WRITE(sc); 793 return WPI_READ(sc, WPI_MEM_RDATA); 794} 795 796static __inline void 797wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 798 int count) 799{ 800 for (; count > 0; count--, addr += 4) 801 *data++ = wpi_mem_read(sc, addr); 802} 803 804static int 805wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 806{ 807 uint8_t *out = data; 808 uint32_t val; 809 int error, ntries; 810 811 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 812 813 if ((error = wpi_nic_lock(sc)) != 0) 814 return error; 815 816 for (; count > 0; count -= 2, addr++) { 817 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 818 for (ntries = 0; ntries < 10; ntries++) { 819 val = WPI_READ(sc, WPI_EEPROM); 820 if (val & WPI_EEPROM_READ_VALID) 821 break; 822 DELAY(5); 823 } 824 if (ntries == 10) { 825 device_printf(sc->sc_dev, 826 "timeout reading ROM at 0x%x\n", addr); 827 return ETIMEDOUT; 828 } 829 *out++= val >> 16; 830 if (count > 1) 831 *out ++= val >> 24; 832 } 833 834 wpi_nic_unlock(sc); 835 836 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 837 838 return 0; 839} 840 841static void 842wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 843{ 844 if (error != 0) 845 return; 846 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 847 *(bus_addr_t *)arg = segs[0].ds_addr; 848} 849 850/* 851 * Allocates a contiguous block of dma memory of the requested size and 852 * alignment. 853 */ 854static int 855wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 856 void **kvap, bus_size_t size, bus_size_t alignment) 857{ 858 int error; 859 860 dma->tag = NULL; 861 dma->size = size; 862 863 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 864 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 865 1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag); 866 if (error != 0) 867 goto fail; 868 869 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 870 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 871 if (error != 0) 872 goto fail; 873 874 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 875 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 876 if (error != 0) 877 goto fail; 878 879 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 880 881 if (kvap != NULL) 882 *kvap = dma->vaddr; 883 884 return 0; 885 886fail: wpi_dma_contig_free(dma); 887 return error; 888} 889 890static void 891wpi_dma_contig_free(struct wpi_dma_info *dma) 892{ 893 if (dma->vaddr != NULL) { 894 bus_dmamap_sync(dma->tag, dma->map, 895 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 896 bus_dmamap_unload(dma->tag, dma->map); 897 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 898 dma->vaddr = NULL; 899 } 900 if (dma->tag != NULL) { 901 bus_dma_tag_destroy(dma->tag); 902 dma->tag = NULL; 903 } 904} 905 906/* 907 * Allocate a shared page between host and NIC. 908 */ 909static int 910wpi_alloc_shared(struct wpi_softc *sc) 911{ 912 /* Shared buffer must be aligned on a 4KB boundary. */ 913 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 914 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 915} 916 917static void 918wpi_free_shared(struct wpi_softc *sc) 919{ 920 wpi_dma_contig_free(&sc->shared_dma); 921} 922 923/* 924 * Allocate DMA-safe memory for firmware transfer. 925 */ 926static int 927wpi_alloc_fwmem(struct wpi_softc *sc) 928{ 929 /* Must be aligned on a 16-byte boundary. */ 930 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 931 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 932} 933 934static void 935wpi_free_fwmem(struct wpi_softc *sc) 936{ 937 wpi_dma_contig_free(&sc->fw_dma); 938} 939 940static int 941wpi_alloc_rx_ring(struct wpi_softc *sc) 942{ 943 struct wpi_rx_ring *ring = &sc->rxq; 944 bus_size_t size; 945 int i, error; 946 947 ring->cur = 0; 948 ring->update = 0; 949 950 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 951 952 /* Allocate RX descriptors (16KB aligned.) */ 953 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 954 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 955 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 956 if (error != 0) { 957 device_printf(sc->sc_dev, 958 "%s: could not allocate RX ring DMA memory, error %d\n", 959 __func__, error); 960 goto fail; 961 } 962 963 /* Create RX buffer DMA tag. */ 964 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 965 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 966 MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, 967 &ring->data_dmat); 968 if (error != 0) { 969 device_printf(sc->sc_dev, 970 "%s: could not create RX buf DMA tag, error %d\n", 971 __func__, error); 972 goto fail; 973 } 974 975 /* 976 * Allocate and map RX buffers. 977 */ 978 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 979 struct wpi_rx_data *data = &ring->data[i]; 980 bus_addr_t paddr; 981 982 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 983 if (error != 0) { 984 device_printf(sc->sc_dev, 985 "%s: could not create RX buf DMA map, error %d\n", 986 __func__, error); 987 goto fail; 988 } 989 990 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 991 if (data->m == NULL) { 992 device_printf(sc->sc_dev, 993 "%s: could not allocate RX mbuf\n", __func__); 994 error = ENOBUFS; 995 goto fail; 996 } 997 998 error = bus_dmamap_load(ring->data_dmat, data->map, 999 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1000 &paddr, BUS_DMA_NOWAIT); 1001 if (error != 0 && error != EFBIG) { 1002 device_printf(sc->sc_dev, 1003 "%s: can't map mbuf (error %d)\n", __func__, 1004 error); 1005 goto fail; 1006 } 1007 1008 /* Set physical address of RX buffer. */ 1009 ring->desc[i] = htole32(paddr); 1010 } 1011 1012 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1013 BUS_DMASYNC_PREWRITE); 1014 1015 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1016 1017 return 0; 1018 1019fail: wpi_free_rx_ring(sc); 1020 1021 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1022 1023 return error; 1024} 1025 1026static void 1027wpi_update_rx_ring(struct wpi_softc *sc) 1028{ 1029 struct wpi_rx_ring *ring = &sc->rxq; 1030 1031 if (ring->update != 0) { 1032 /* Wait for INT_WAKEUP event. */ 1033 return; 1034 } 1035 1036 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1037 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1038 __func__); 1039 1040 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1041 ring->update = 1; 1042 } else 1043 WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7); 1044} 1045 1046static void 1047wpi_reset_rx_ring(struct wpi_softc *sc) 1048{ 1049 struct wpi_rx_ring *ring = &sc->rxq; 1050 int ntries; 1051 1052 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1053 1054 if (wpi_nic_lock(sc) == 0) { 1055 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1056 for (ntries = 0; ntries < 1000; ntries++) { 1057 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1058 WPI_FH_RX_STATUS_IDLE) 1059 break; 1060 DELAY(10); 1061 } 1062#ifdef WPI_DEBUG 1063 if (ntries == 1000) { 1064 device_printf(sc->sc_dev, 1065 "timeout resetting Rx ring\n"); 1066 } 1067#endif 1068 wpi_nic_unlock(sc); 1069 } 1070 1071 ring->cur = 0; 1072 ring->update = 0; 1073} 1074 1075static void 1076wpi_free_rx_ring(struct wpi_softc *sc) 1077{ 1078 struct wpi_rx_ring *ring = &sc->rxq; 1079 int i; 1080 1081 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1082 1083 wpi_dma_contig_free(&ring->desc_dma); 1084 1085 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1086 struct wpi_rx_data *data = &ring->data[i]; 1087 1088 if (data->m != NULL) { 1089 bus_dmamap_sync(ring->data_dmat, data->map, 1090 BUS_DMASYNC_POSTREAD); 1091 bus_dmamap_unload(ring->data_dmat, data->map); 1092 m_freem(data->m); 1093 data->m = NULL; 1094 } 1095 if (data->map != NULL) 1096 bus_dmamap_destroy(ring->data_dmat, data->map); 1097 } 1098 if (ring->data_dmat != NULL) { 1099 bus_dma_tag_destroy(ring->data_dmat); 1100 ring->data_dmat = NULL; 1101 } 1102} 1103 1104static int 1105wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid) 1106{ 1107 bus_addr_t paddr; 1108 bus_size_t size; 1109 int i, error; 1110 1111 ring->qid = qid; 1112 ring->queued = 0; 1113 ring->cur = 0; 1114 ring->update = 0; 1115 1116 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1117 1118 /* Allocate TX descriptors (16KB aligned.) */ 1119 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1120 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1121 size, WPI_RING_DMA_ALIGN); 1122 if (error != 0) { 1123 device_printf(sc->sc_dev, 1124 "%s: could not allocate TX ring DMA memory, error %d\n", 1125 __func__, error); 1126 goto fail; 1127 } 1128 1129 /* Update shared area with ring physical address. */ 1130 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1131 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1132 BUS_DMASYNC_PREWRITE); 1133 1134 /* 1135 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need 1136 * to allocate commands space for other rings. 1137 * XXX Do we really need to allocate descriptors for other rings? 1138 */ 1139 if (qid > WPI_CMD_QUEUE_NUM) 1140 return 0; 1141 1142 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1143 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1144 size, 4); 1145 if (error != 0) { 1146 device_printf(sc->sc_dev, 1147 "%s: could not allocate TX cmd DMA memory, error %d\n", 1148 __func__, error); 1149 goto fail; 1150 } 1151 1152 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1153 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1154 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1155 &ring->data_dmat); 1156 if (error != 0) { 1157 device_printf(sc->sc_dev, 1158 "%s: could not create TX buf DMA tag, error %d\n", 1159 __func__, error); 1160 goto fail; 1161 } 1162 1163 paddr = ring->cmd_dma.paddr; 1164 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1165 struct wpi_tx_data *data = &ring->data[i]; 1166 1167 data->cmd_paddr = paddr; 1168 paddr += sizeof (struct wpi_tx_cmd); 1169 1170 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1171 if (error != 0) { 1172 device_printf(sc->sc_dev, 1173 "%s: could not create TX buf DMA map, error %d\n", 1174 __func__, error); 1175 goto fail; 1176 } 1177 } 1178 1179 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1180 1181 return 0; 1182 1183fail: wpi_free_tx_ring(sc, ring); 1184 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1185 return error; 1186} 1187 1188static void 1189wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1190{ 1191 if (ring->update != 0) { 1192 /* Wait for INT_WAKEUP event. */ 1193 return; 1194 } 1195 1196 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1197 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1198 __func__, ring->qid); 1199 1200 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1201 ring->update = 1; 1202 } else 1203 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1204} 1205 1206static void 1207wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1208{ 1209 int i; 1210 1211 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1212 1213 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1214 struct wpi_tx_data *data = &ring->data[i]; 1215 1216 if (data->m != NULL) { 1217 bus_dmamap_sync(ring->data_dmat, data->map, 1218 BUS_DMASYNC_POSTWRITE); 1219 bus_dmamap_unload(ring->data_dmat, data->map); 1220 m_freem(data->m); 1221 data->m = NULL; 1222 } 1223 } 1224 /* Clear TX descriptors. */ 1225 memset(ring->desc, 0, ring->desc_dma.size); 1226 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1227 BUS_DMASYNC_PREWRITE); 1228 sc->qfullmsk &= ~(1 << ring->qid); 1229 ring->queued = 0; 1230 ring->cur = 0; 1231 ring->update = 0; 1232} 1233 1234static void 1235wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1236{ 1237 int i; 1238 1239 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1240 1241 wpi_dma_contig_free(&ring->desc_dma); 1242 wpi_dma_contig_free(&ring->cmd_dma); 1243 1244 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1245 struct wpi_tx_data *data = &ring->data[i]; 1246 1247 if (data->m != NULL) { 1248 bus_dmamap_sync(ring->data_dmat, data->map, 1249 BUS_DMASYNC_POSTWRITE); 1250 bus_dmamap_unload(ring->data_dmat, data->map); 1251 m_freem(data->m); 1252 } 1253 if (data->map != NULL) 1254 bus_dmamap_destroy(ring->data_dmat, data->map); 1255 } 1256 if (ring->data_dmat != NULL) { 1257 bus_dma_tag_destroy(ring->data_dmat); 1258 ring->data_dmat = NULL; 1259 } 1260} 1261 1262/* 1263 * Extract various information from EEPROM. 1264 */ 1265static int 1266wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 1267{ 1268#define WPI_CHK(res) do { \ 1269 if ((error = res) != 0) \ 1270 goto fail; \ 1271} while (0) 1272 int error, i; 1273 1274 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1275 1276 /* Adapter has to be powered on for EEPROM access to work. */ 1277 if ((error = wpi_apm_init(sc)) != 0) { 1278 device_printf(sc->sc_dev, 1279 "%s: could not power ON adapter, error %d\n", __func__, 1280 error); 1281 return error; 1282 } 1283 1284 if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) { 1285 device_printf(sc->sc_dev, "bad EEPROM signature\n"); 1286 error = EIO; 1287 goto fail; 1288 } 1289 /* Clear HW ownership of EEPROM. */ 1290 WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER); 1291 1292 /* Read the hardware capabilities, revision and SKU type. */ 1293 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap, 1294 sizeof(sc->cap))); 1295 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 1296 sizeof(sc->rev))); 1297 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1298 sizeof(sc->type))); 1299 1300 DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, 1301 le16toh(sc->rev), sc->type); 1302 1303 /* Read the regulatory domain (4 ASCII characters.) */ 1304 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 1305 sizeof(sc->domain))); 1306 1307 /* Read MAC address. */ 1308 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 1309 IEEE80211_ADDR_LEN)); 1310 1311 /* Read the list of authorized channels. */ 1312 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 1313 WPI_CHK(wpi_read_eeprom_channels(sc, i)); 1314 1315 /* Read the list of TX power groups. */ 1316 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 1317 WPI_CHK(wpi_read_eeprom_group(sc, i)); 1318 1319fail: wpi_apm_stop(sc); /* Power OFF adapter. */ 1320 1321 DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 1322 __func__); 1323 1324 return error; 1325#undef WPI_CHK 1326} 1327 1328/* 1329 * Translate EEPROM flags to net80211. 1330 */ 1331static uint32_t 1332wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel) 1333{ 1334 uint32_t nflags; 1335 1336 nflags = 0; 1337 if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0) 1338 nflags |= IEEE80211_CHAN_PASSIVE; 1339 if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0) 1340 nflags |= IEEE80211_CHAN_NOADHOC; 1341 if (channel->flags & WPI_EEPROM_CHAN_RADAR) { 1342 nflags |= IEEE80211_CHAN_DFS; 1343 /* XXX apparently IBSS may still be marked */ 1344 nflags |= IEEE80211_CHAN_NOADHOC; 1345 } 1346 1347 return nflags; 1348} 1349 1350static void 1351wpi_read_eeprom_band(struct wpi_softc *sc, int n) 1352{ 1353 struct ifnet *ifp = sc->sc_ifp; 1354 struct ieee80211com *ic = ifp->if_l2com; 1355 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1356 const struct wpi_chan_band *band = &wpi_bands[n]; 1357 struct ieee80211_channel *c; 1358 uint8_t chan; 1359 int i, nflags; 1360 1361 for (i = 0; i < band->nchan; i++) { 1362 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1363 DPRINTF(sc, WPI_DEBUG_HW, 1364 "Channel Not Valid: %d, band %d\n", 1365 band->chan[i],n); 1366 continue; 1367 } 1368 1369 chan = band->chan[i]; 1370 nflags = wpi_eeprom_channel_flags(&channels[i]); 1371 1372 c = &ic->ic_channels[ic->ic_nchans++]; 1373 c->ic_ieee = chan; 1374 c->ic_maxregpower = channels[i].maxpwr; 1375 c->ic_maxpower = 2*c->ic_maxregpower; 1376 1377 if (n == 0) { /* 2GHz band */ 1378 c->ic_freq = ieee80211_ieee2mhz(chan, 1379 IEEE80211_CHAN_G); 1380 1381 /* G =>'s B is supported */ 1382 c->ic_flags = IEEE80211_CHAN_B | nflags; 1383 c = &ic->ic_channels[ic->ic_nchans++]; 1384 c[0] = c[-1]; 1385 c->ic_flags = IEEE80211_CHAN_G | nflags; 1386 } else { /* 5GHz band */ 1387 c->ic_freq = ieee80211_ieee2mhz(chan, 1388 IEEE80211_CHAN_A); 1389 1390 c->ic_flags = IEEE80211_CHAN_A | nflags; 1391 } 1392 1393 /* Save maximum allowed TX power for this channel. */ 1394 sc->maxpwr[chan] = channels[i].maxpwr; 1395 1396 DPRINTF(sc, WPI_DEBUG_EEPROM, 1397 "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d," 1398 " offset %d\n", chan, c->ic_freq, 1399 channels[i].flags, sc->maxpwr[chan], 1400 IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans); 1401 } 1402} 1403 1404/** 1405 * Read the eeprom to find out what channels are valid for the given 1406 * band and update net80211 with what we find. 1407 */ 1408static int 1409wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 1410{ 1411 struct ifnet *ifp = sc->sc_ifp; 1412 struct ieee80211com *ic = ifp->if_l2com; 1413 const struct wpi_chan_band *band = &wpi_bands[n]; 1414 int error; 1415 1416 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1417 1418 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1419 band->nchan * sizeof (struct wpi_eeprom_chan)); 1420 if (error != 0) { 1421 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1422 return error; 1423 } 1424 1425 wpi_read_eeprom_band(sc, n); 1426 1427 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1428 1429 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1430 1431 return 0; 1432} 1433 1434static struct wpi_eeprom_chan * 1435wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1436{ 1437 int i, j; 1438 1439 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1440 for (i = 0; i < wpi_bands[j].nchan; i++) 1441 if (wpi_bands[j].chan[i] == c->ic_ieee) 1442 return &sc->eeprom_channels[j][i]; 1443 1444 return NULL; 1445} 1446 1447/* 1448 * Enforce flags read from EEPROM. 1449 */ 1450static int 1451wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1452 int nchan, struct ieee80211_channel chans[]) 1453{ 1454 struct ifnet *ifp = ic->ic_ifp; 1455 struct wpi_softc *sc = ifp->if_softc; 1456 int i; 1457 1458 for (i = 0; i < nchan; i++) { 1459 struct ieee80211_channel *c = &chans[i]; 1460 struct wpi_eeprom_chan *channel; 1461 1462 channel = wpi_find_eeprom_channel(sc, c); 1463 if (channel == NULL) { 1464 if_printf(ic->ic_ifp, 1465 "%s: invalid channel %u freq %u/0x%x\n", 1466 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1467 return EINVAL; 1468 } 1469 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1470 } 1471 1472 return 0; 1473} 1474 1475static int 1476wpi_read_eeprom_group(struct wpi_softc *sc, int n) 1477{ 1478 struct wpi_power_group *group = &sc->groups[n]; 1479 struct wpi_eeprom_group rgroup; 1480 int i, error; 1481 1482 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1483 1484 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1485 &rgroup, sizeof rgroup)) != 0) { 1486 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1487 return error; 1488 } 1489 1490 /* Save TX power group information. */ 1491 group->chan = rgroup.chan; 1492 group->maxpwr = rgroup.maxpwr; 1493 /* Retrieve temperature at which the samples were taken. */ 1494 group->temp = (int16_t)le16toh(rgroup.temp); 1495 1496 DPRINTF(sc, WPI_DEBUG_EEPROM, 1497 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1498 group->maxpwr, group->temp); 1499 1500 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1501 group->samples[i].index = rgroup.samples[i].index; 1502 group->samples[i].power = rgroup.samples[i].power; 1503 1504 DPRINTF(sc, WPI_DEBUG_EEPROM, 1505 "\tsample %d: index=%d power=%d\n", i, 1506 group->samples[i].index, group->samples[i].power); 1507 } 1508 1509 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1510 1511 return 0; 1512} 1513 1514static int 1515wpi_add_node_entry_adhoc(struct wpi_softc *sc) 1516{ 1517 int newid = WPI_ID_IBSS_MIN; 1518 1519 for (; newid <= WPI_ID_IBSS_MAX; newid++) { 1520 if ((sc->nodesmsk & (1 << newid)) == 0) { 1521 sc->nodesmsk |= 1 << newid; 1522 return newid; 1523 } 1524 } 1525 1526 return WPI_ID_UNDEFINED; 1527} 1528 1529static __inline int 1530wpi_add_node_entry_sta(struct wpi_softc *sc) 1531{ 1532 sc->nodesmsk |= 1 << WPI_ID_BSS; 1533 1534 return WPI_ID_BSS; 1535} 1536 1537static __inline int 1538wpi_check_node_entry(struct wpi_softc *sc, uint8_t id) 1539{ 1540 if (id == WPI_ID_UNDEFINED) 1541 return 0; 1542 1543 return (sc->nodesmsk >> id) & 1; 1544} 1545 1546static __inline void 1547wpi_clear_node_table(struct wpi_softc *sc) 1548{ 1549 sc->nodesmsk = 0; 1550} 1551 1552static __inline void 1553wpi_del_node_entry(struct wpi_softc *sc, uint8_t id) 1554{ 1555 sc->nodesmsk &= ~(1 << id); 1556} 1557 1558static struct ieee80211_node * 1559wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1560{ 1561 struct wpi_node *wn; 1562 1563 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1564 M_NOWAIT | M_ZERO); 1565 1566 if (wn == NULL) 1567 return NULL; 1568 1569 wn->id = WPI_ID_UNDEFINED; 1570 1571 return &wn->ni; 1572} 1573 1574static void 1575wpi_node_free(struct ieee80211_node *ni) 1576{ 1577 struct ieee80211com *ic = ni->ni_ic; 1578 struct wpi_softc *sc = ic->ic_ifp->if_softc; 1579 struct wpi_node *wn = WPI_NODE(ni); 1580 1581 if (wn->id != WPI_ID_UNDEFINED) { 1582 WPI_LOCK(sc); 1583 if (wpi_check_node_entry(sc, wn->id)) { 1584 wpi_del_node_entry(sc, wn->id); 1585 wpi_del_node(sc, ni); 1586 } 1587 WPI_UNLOCK(sc); 1588 } 1589 1590 sc->sc_node_free(ni); 1591} 1592 1593/** 1594 * Called by net80211 when ever there is a change to 80211 state machine 1595 */ 1596static int 1597wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1598{ 1599 struct wpi_vap *wvp = WPI_VAP(vap); 1600 struct ieee80211com *ic = vap->iv_ic; 1601 struct ifnet *ifp = ic->ic_ifp; 1602 struct wpi_softc *sc = ifp->if_softc; 1603 int error = 0; 1604 1605 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1606 1607 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1608 ieee80211_state_name[vap->iv_state], 1609 ieee80211_state_name[nstate]); 1610 1611 IEEE80211_UNLOCK(ic); 1612 WPI_LOCK(sc); 1613 switch (nstate) { 1614 case IEEE80211_S_SCAN: 1615 if ((vap->iv_opmode == IEEE80211_M_IBSS || 1616 vap->iv_opmode == IEEE80211_M_AHDEMO) && 1617 (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 1618 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1619 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1620 device_printf(sc->sc_dev, 1621 "%s: could not send RXON\n", __func__); 1622 } 1623 } 1624 break; 1625 1626 case IEEE80211_S_ASSOC: 1627 if (vap->iv_state != IEEE80211_S_RUN) 1628 break; 1629 /* FALLTHROUGH */ 1630 case IEEE80211_S_AUTH: 1631 /* 1632 * The node must be registered in the firmware before auth. 1633 * Also the associd must be cleared on RUN -> ASSOC 1634 * transitions. 1635 */ 1636 if ((error = wpi_auth(sc, vap)) != 0) { 1637 device_printf(sc->sc_dev, 1638 "%s: could not move to AUTH state, error %d\n", 1639 __func__, error); 1640 } 1641 break; 1642 1643 case IEEE80211_S_RUN: 1644 /* 1645 * RUN -> RUN transition; Just restart the timers. 1646 */ 1647 if (vap->iv_state == IEEE80211_S_RUN) { 1648 wpi_calib_timeout(sc); 1649 break; 1650 } 1651 1652 /* 1653 * !RUN -> RUN requires setting the association id 1654 * which is done with a firmware cmd. We also defer 1655 * starting the timers until that work is done. 1656 */ 1657 if ((error = wpi_run(sc, vap)) != 0) { 1658 device_printf(sc->sc_dev, 1659 "%s: could not move to RUN state\n", __func__); 1660 } 1661 break; 1662 1663 default: 1664 break; 1665 } 1666 WPI_UNLOCK(sc); 1667 IEEE80211_LOCK(ic); 1668 if (error != 0) { 1669 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1670 return error; 1671 } 1672 1673 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1674 1675 return wvp->newstate(vap, nstate, arg); 1676} 1677 1678static void 1679wpi_calib_timeout(void *arg) 1680{ 1681 struct wpi_softc *sc = arg; 1682 struct ifnet *ifp = sc->sc_ifp; 1683 struct ieee80211com *ic = ifp->if_l2com; 1684 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1685 1686 if (vap->iv_state != IEEE80211_S_RUN) 1687 return; 1688 1689 wpi_power_calibration(sc); 1690 1691 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1692} 1693 1694static __inline uint8_t 1695rate2plcp(const uint8_t rate) 1696{ 1697 switch (rate) { 1698 case 12: return 0xd; 1699 case 18: return 0xf; 1700 case 24: return 0x5; 1701 case 36: return 0x7; 1702 case 48: return 0x9; 1703 case 72: return 0xb; 1704 case 96: return 0x1; 1705 case 108: return 0x3; 1706 case 2: return 10; 1707 case 4: return 20; 1708 case 11: return 55; 1709 case 22: return 110; 1710 default: return 0; 1711 } 1712} 1713 1714static __inline uint8_t 1715plcp2rate(const uint8_t plcp) 1716{ 1717 switch (plcp) { 1718 case 0xd: return 12; 1719 case 0xf: return 18; 1720 case 0x5: return 24; 1721 case 0x7: return 36; 1722 case 0x9: return 48; 1723 case 0xb: return 72; 1724 case 0x1: return 96; 1725 case 0x3: return 108; 1726 case 10: return 2; 1727 case 20: return 4; 1728 case 55: return 11; 1729 case 110: return 22; 1730 default: return 0; 1731 } 1732} 1733 1734/* Quickly determine if a given rate is CCK or OFDM. */ 1735#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1736 1737static void 1738wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1739 struct wpi_rx_data *data) 1740{ 1741 struct ifnet *ifp = sc->sc_ifp; 1742 const struct ieee80211_cipher *cip = NULL; 1743 struct ieee80211com *ic = ifp->if_l2com; 1744 struct wpi_rx_ring *ring = &sc->rxq; 1745 struct wpi_rx_stat *stat; 1746 struct wpi_rx_head *head; 1747 struct wpi_rx_tail *tail; 1748 struct ieee80211_frame *wh; 1749 struct ieee80211_node *ni; 1750 struct mbuf *m, *m1; 1751 bus_addr_t paddr; 1752 uint32_t flags; 1753 uint16_t len; 1754 int error; 1755 1756 stat = (struct wpi_rx_stat *)(desc + 1); 1757 1758 if (stat->len > WPI_STAT_MAXLEN) { 1759 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1760 goto fail1; 1761 } 1762 1763 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1764 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1765 len = le16toh(head->len); 1766 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1767 flags = le32toh(tail->flags); 1768 1769 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1770 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1771 le32toh(desc->len), len, (int8_t)stat->rssi, 1772 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1773 1774 /* Discard frames with a bad FCS early. */ 1775 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1776 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1777 __func__, flags); 1778 goto fail1; 1779 } 1780 /* Discard frames that are too short. */ 1781 if (len < sizeof (*wh)) { 1782 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1783 __func__, len); 1784 goto fail1; 1785 } 1786 1787 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1788 if (m1 == NULL) { 1789 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1790 __func__); 1791 goto fail1; 1792 } 1793 bus_dmamap_unload(ring->data_dmat, data->map); 1794 1795 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1796 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1797 if (error != 0 && error != EFBIG) { 1798 device_printf(sc->sc_dev, 1799 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1800 m_freem(m1); 1801 1802 /* Try to reload the old mbuf. */ 1803 error = bus_dmamap_load(ring->data_dmat, data->map, 1804 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1805 &paddr, BUS_DMA_NOWAIT); 1806 if (error != 0 && error != EFBIG) { 1807 panic("%s: could not load old RX mbuf", __func__); 1808 } 1809 /* Physical address may have changed. */ 1810 ring->desc[ring->cur] = htole32(paddr); 1811 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1812 BUS_DMASYNC_PREWRITE); 1813 goto fail1; 1814 } 1815 1816 m = data->m; 1817 data->m = m1; 1818 /* Update RX descriptor. */ 1819 ring->desc[ring->cur] = htole32(paddr); 1820 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1821 BUS_DMASYNC_PREWRITE); 1822 1823 /* Finalize mbuf. */ 1824 m->m_pkthdr.rcvif = ifp; 1825 m->m_data = (caddr_t)(head + 1); 1826 m->m_pkthdr.len = m->m_len = len; 1827 1828 /* Grab a reference to the source node. */ 1829 wh = mtod(m, struct ieee80211_frame *); 1830 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1831 1832 if (ni != NULL) 1833 cip = ni->ni_ucastkey.wk_cipher; 1834 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 1835 !IEEE80211_IS_MULTICAST(wh->i_addr1) && 1836 cip != NULL && cip->ic_cipher == IEEE80211_CIPHER_AES_CCM) { 1837 if ((flags & WPI_RX_CIPHER_MASK) != WPI_RX_CIPHER_CCMP) 1838 goto fail2; 1839 1840 /* Check whether decryption was successful or not. */ 1841 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 1842 DPRINTF(sc, WPI_DEBUG_RECV, 1843 "CCMP decryption failed 0x%x\n", flags); 1844 goto fail2; 1845 } 1846 m->m_flags |= M_WEP; 1847 } 1848 1849 if (ieee80211_radiotap_active(ic)) { 1850 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1851 1852 tap->wr_flags = 0; 1853 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 1854 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1855 tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET); 1856 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1857 tap->wr_tsft = tail->tstamp; 1858 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1859 tap->wr_rate = plcp2rate(head->plcp); 1860 } 1861 1862 WPI_UNLOCK(sc); 1863 1864 /* Send the frame to the 802.11 layer. */ 1865 if (ni != NULL) { 1866 (void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET); 1867 /* Node is no longer needed. */ 1868 ieee80211_free_node(ni); 1869 } else 1870 (void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET); 1871 1872 WPI_LOCK(sc); 1873 1874 return; 1875 1876fail2: ieee80211_free_node(ni); 1877 m_freem(m); 1878 1879fail1: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1880} 1881 1882static void 1883wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1884 struct wpi_rx_data *data) 1885{ 1886 /* Ignore */ 1887} 1888 1889static void 1890wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1891{ 1892 struct ifnet *ifp = sc->sc_ifp; 1893 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1894 struct wpi_tx_data *data = &ring->data[desc->idx]; 1895 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1896 struct mbuf *m; 1897 struct ieee80211_node *ni; 1898 struct ieee80211vap *vap; 1899 int ackfailcnt = stat->ackfailcnt / 2; /* wpi_mrr_setup() */ 1900 int status = le32toh(stat->status); 1901 1902 KASSERT(data->ni != NULL, ("no node")); 1903 1904 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1905 1906 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 1907 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 1908 "status %x\n", __func__, desc->qid, desc->idx, ackfailcnt, 1909 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 1910 1911 /* Unmap and free mbuf. */ 1912 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1913 bus_dmamap_unload(ring->data_dmat, data->map); 1914 m = data->m, data->m = NULL; 1915 ni = data->ni, data->ni = NULL; 1916 vap = ni->ni_vap; 1917 1918 /* 1919 * Update rate control statistics for the node. 1920 */ 1921 WPI_UNLOCK(sc); 1922 if ((status & 0xff) != 1) { 1923 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1924 ieee80211_ratectl_tx_complete(vap, ni, 1925 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 1926 } else { 1927 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1928 ieee80211_ratectl_tx_complete(vap, ni, 1929 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 1930 } 1931 1932 ieee80211_tx_complete(ni, m, (status & 0xff) != 1); 1933 WPI_LOCK(sc); 1934 1935 sc->sc_tx_timer = 0; 1936 if (--ring->queued < WPI_TX_RING_LOMARK) { 1937 sc->qfullmsk &= ~(1 << ring->qid); 1938 if (sc->qfullmsk == 0 && 1939 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 1940 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1941 wpi_start_locked(ifp); 1942 } 1943 } 1944 1945 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1946} 1947 1948/* 1949 * Process a "command done" firmware notification. This is where we wakeup 1950 * processes waiting for a synchronous command completion. 1951 */ 1952static void 1953wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1954{ 1955 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 1956 struct wpi_tx_data *data; 1957 1958 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid=%x idx=%d flags=%x " 1959 "type=%s len=%d\n", desc->qid, desc->idx, 1960 desc->flags, wpi_cmd_str(desc->type), 1961 le32toh(desc->len)); 1962 1963 if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM) 1964 return; /* Not a command ack. */ 1965 1966 data = &ring->data[desc->idx]; 1967 1968 /* If the command was mapped in an mbuf, free it. */ 1969 if (data->m != NULL) { 1970 bus_dmamap_sync(ring->data_dmat, data->map, 1971 BUS_DMASYNC_POSTWRITE); 1972 bus_dmamap_unload(ring->data_dmat, data->map); 1973 m_freem(data->m); 1974 data->m = NULL; 1975 } 1976 1977 sc->flags &= ~WPI_FLAG_BUSY; 1978 wakeup(&ring->cmd[desc->idx]); 1979} 1980 1981static void 1982wpi_notif_intr(struct wpi_softc *sc) 1983{ 1984 struct ifnet *ifp = sc->sc_ifp; 1985 struct ieee80211com *ic = ifp->if_l2com; 1986 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1987 int hw; 1988 1989 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1990 BUS_DMASYNC_POSTREAD); 1991 1992 hw = le32toh(sc->shared->next); 1993 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1994 1995 while (sc->rxq.cur != hw) { 1996 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1997 1998 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 1999 struct wpi_rx_desc *desc; 2000 2001 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2002 BUS_DMASYNC_POSTREAD); 2003 desc = mtod(data->m, struct wpi_rx_desc *); 2004 2005 DPRINTF(sc, WPI_DEBUG_NOTIFY, 2006 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 2007 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 2008 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 2009 2010 if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) { 2011 /* Reply to a command. */ 2012 wpi_cmd_done(sc, desc); 2013 } 2014 2015 switch (desc->type) { 2016 case WPI_RX_DONE: 2017 /* An 802.11 frame has been received. */ 2018 wpi_rx_done(sc, desc, data); 2019 2020 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2021 /* wpi_stop() was called. */ 2022 return; 2023 } 2024 2025 break; 2026 2027 case WPI_TX_DONE: 2028 /* An 802.11 frame has been transmitted. */ 2029 wpi_tx_done(sc, desc); 2030 break; 2031 2032 case WPI_RX_STATISTICS: 2033 case WPI_BEACON_STATISTICS: 2034 wpi_rx_statistics(sc, desc, data); 2035 break; 2036 2037 case WPI_BEACON_MISSED: 2038 { 2039 struct wpi_beacon_missed *miss = 2040 (struct wpi_beacon_missed *)(desc + 1); 2041 int misses; 2042 2043 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2044 BUS_DMASYNC_POSTREAD); 2045 misses = le32toh(miss->consecutive); 2046 2047 DPRINTF(sc, WPI_DEBUG_STATE, 2048 "%s: beacons missed %d/%d\n", __func__, misses, 2049 le32toh(miss->total)); 2050 2051 if (vap->iv_state == IEEE80211_S_RUN && 2052 (ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2053 if (misses >= vap->iv_bmissthreshold) { 2054 WPI_UNLOCK(sc); 2055 ieee80211_beacon_miss(ic); 2056 WPI_LOCK(sc); 2057 } 2058 } 2059 break; 2060 } 2061 case WPI_UC_READY: 2062 { 2063 struct wpi_ucode_info *uc = 2064 (struct wpi_ucode_info *)(desc + 1); 2065 2066 /* The microcontroller is ready. */ 2067 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2068 BUS_DMASYNC_POSTREAD); 2069 DPRINTF(sc, WPI_DEBUG_RESET, 2070 "microcode alive notification version=%d.%d " 2071 "subtype=%x alive=%x\n", uc->major, uc->minor, 2072 uc->subtype, le32toh(uc->valid)); 2073 2074 if (le32toh(uc->valid) != 1) { 2075 device_printf(sc->sc_dev, 2076 "microcontroller initialization failed\n"); 2077 wpi_stop_locked(sc); 2078 } 2079 /* Save the address of the error log in SRAM. */ 2080 sc->errptr = le32toh(uc->errptr); 2081 break; 2082 } 2083 case WPI_STATE_CHANGED: 2084 { 2085 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2086 BUS_DMASYNC_POSTREAD); 2087 2088 uint32_t *status = (uint32_t *)(desc + 1); 2089 2090 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2091 le32toh(*status)); 2092 2093 if (le32toh(*status) & 1) { 2094 wpi_clear_node_table(sc); 2095 ieee80211_runtask(ic, &sc->sc_radiooff_task); 2096 return; 2097 } 2098 break; 2099 } 2100 case WPI_START_SCAN: 2101 { 2102 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2103 BUS_DMASYNC_POSTREAD); 2104#ifdef WPI_DEBUG 2105 struct wpi_start_scan *scan = 2106 (struct wpi_start_scan *)(desc + 1); 2107 DPRINTF(sc, WPI_DEBUG_SCAN, 2108 "%s: scanning channel %d status %x\n", 2109 __func__, scan->chan, le32toh(scan->status)); 2110#endif 2111 break; 2112 } 2113 case WPI_STOP_SCAN: 2114 { 2115 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2116 BUS_DMASYNC_POSTREAD); 2117#ifdef WPI_DEBUG 2118 struct wpi_stop_scan *scan = 2119 (struct wpi_stop_scan *)(desc + 1); 2120 DPRINTF(sc, WPI_DEBUG_SCAN, 2121 "scan finished nchan=%d status=%d chan=%d\n", 2122 scan->nchan, scan->status, scan->chan); 2123#endif 2124 sc->sc_scan_timer = 0; 2125 WPI_UNLOCK(sc); 2126 ieee80211_scan_next(vap); 2127 WPI_LOCK(sc); 2128 break; 2129 } 2130 } 2131 } 2132 2133 /* Tell the firmware what we have processed. */ 2134 wpi_update_rx_ring(sc); 2135} 2136 2137/* 2138 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2139 * from power-down sleep mode. 2140 */ 2141static void 2142wpi_wakeup_intr(struct wpi_softc *sc) 2143{ 2144 int qid; 2145 2146 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2147 "%s: ucode wakeup from power-down sleep\n", __func__); 2148 2149 /* Wakeup RX and TX rings. */ 2150 if (sc->rxq.update) { 2151 sc->rxq.update = 0; 2152 wpi_update_rx_ring(sc); 2153 } 2154 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) { 2155 struct wpi_tx_ring *ring = &sc->txq[qid]; 2156 2157 if (ring->update) { 2158 ring->update = 0; 2159 wpi_update_tx_ring(sc, ring); 2160 } 2161 } 2162 2163 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2164} 2165 2166/* 2167 * Dump the error log of the firmware when a firmware panic occurs. Although 2168 * we can't debug the firmware because it is neither open source nor free, it 2169 * can help us to identify certain classes of problems. 2170 */ 2171static void 2172wpi_fatal_intr(struct wpi_softc *sc) 2173{ 2174 struct wpi_fw_dump dump; 2175 uint32_t i, offset, count; 2176 const uint32_t size_errmsg = 2177 (sizeof (wpi_fw_errmsg) / sizeof ((wpi_fw_errmsg)[0])); 2178 2179 /* Check that the error log address is valid. */ 2180 if (sc->errptr < WPI_FW_DATA_BASE || 2181 sc->errptr + sizeof (dump) > 2182 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2183 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2184 sc->errptr); 2185 return; 2186 } 2187 if (wpi_nic_lock(sc) != 0) { 2188 printf("%s: could not read firmware error log\n", __func__); 2189 return; 2190 } 2191 /* Read number of entries in the log. */ 2192 count = wpi_mem_read(sc, sc->errptr); 2193 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2194 printf("%s: invalid count field (count = %u)\n", __func__, 2195 count); 2196 wpi_nic_unlock(sc); 2197 return; 2198 } 2199 /* Skip "count" field. */ 2200 offset = sc->errptr + sizeof (uint32_t); 2201 printf("firmware error log (count = %u):\n", count); 2202 for (i = 0; i < count; i++) { 2203 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2204 sizeof (dump) / sizeof (uint32_t)); 2205 2206 printf(" error type = \"%s\" (0x%08X)\n", 2207 (dump.desc < size_errmsg) ? 2208 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2209 dump.desc); 2210 printf(" error data = 0x%08X\n", 2211 dump.data); 2212 printf(" branch link = 0x%08X%08X\n", 2213 dump.blink[0], dump.blink[1]); 2214 printf(" interrupt link = 0x%08X%08X\n", 2215 dump.ilink[0], dump.ilink[1]); 2216 printf(" time = %u\n", dump.time); 2217 2218 offset += sizeof (dump); 2219 } 2220 wpi_nic_unlock(sc); 2221 /* Dump driver status (TX and RX rings) while we're here. */ 2222 printf("driver status:\n"); 2223 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 2224 struct wpi_tx_ring *ring = &sc->txq[i]; 2225 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2226 i, ring->qid, ring->cur, ring->queued); 2227 } 2228 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2229} 2230 2231static void 2232wpi_intr(void *arg) 2233{ 2234 struct wpi_softc *sc = arg; 2235 struct ifnet *ifp = sc->sc_ifp; 2236 uint32_t r1, r2; 2237 2238 WPI_LOCK(sc); 2239 2240 /* Disable interrupts. */ 2241 WPI_WRITE(sc, WPI_INT_MASK, 0); 2242 2243 r1 = WPI_READ(sc, WPI_INT); 2244 2245 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) 2246 goto end; /* Hardware gone! */ 2247 2248 r2 = WPI_READ(sc, WPI_FH_INT); 2249 2250 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2251 r1, r2); 2252 2253 if (r1 == 0 && r2 == 0) 2254 goto done; /* Interrupt not for us. */ 2255 2256 /* Acknowledge interrupts. */ 2257 WPI_WRITE(sc, WPI_INT, r1); 2258 WPI_WRITE(sc, WPI_FH_INT, r2); 2259 2260 if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) { 2261 struct ieee80211com *ic = ifp->if_l2com; 2262 2263 device_printf(sc->sc_dev, "fatal firmware error\n"); 2264 wpi_fatal_intr(sc); 2265 DPRINTF(sc, WPI_DEBUG_HW, 2266 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2267 "(Hardware Error)"); 2268 ieee80211_runtask(ic, &sc->sc_reinittask); 2269 sc->flags &= ~WPI_FLAG_BUSY; 2270 goto end; 2271 } 2272 2273 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2274 (r2 & WPI_FH_INT_RX)) 2275 wpi_notif_intr(sc); 2276 2277 if (r1 & WPI_INT_ALIVE) 2278 wakeup(sc); /* Firmware is alive. */ 2279 2280 if (r1 & WPI_INT_WAKEUP) 2281 wpi_wakeup_intr(sc); 2282 2283done: 2284 /* Re-enable interrupts. */ 2285 if (ifp->if_flags & IFF_UP) 2286 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2287 2288end: WPI_UNLOCK(sc); 2289} 2290 2291static int 2292wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2293{ 2294 struct ieee80211_frame *wh; 2295 struct wpi_tx_cmd *cmd; 2296 struct wpi_tx_data *data; 2297 struct wpi_tx_desc *desc; 2298 struct wpi_tx_ring *ring; 2299 struct mbuf *m1; 2300 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2301 int error, i, hdrlen, nsegs, totlen, pad; 2302 2303 WPI_LOCK_ASSERT(sc); 2304 2305 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2306 2307 wh = mtod(buf->m, struct ieee80211_frame *); 2308 hdrlen = ieee80211_anyhdrsize(wh); 2309 totlen = buf->m->m_pkthdr.len; 2310 2311 if (hdrlen & 3) { 2312 /* First segment length must be a multiple of 4. */ 2313 pad = 4 - (hdrlen & 3); 2314 } else 2315 pad = 0; 2316 2317 ring = &sc->txq[buf->ac]; 2318 desc = &ring->desc[ring->cur]; 2319 data = &ring->data[ring->cur]; 2320 2321 /* Prepare TX firmware command. */ 2322 cmd = &ring->cmd[ring->cur]; 2323 cmd->code = buf->code; 2324 cmd->flags = 0; 2325 cmd->qid = ring->qid; 2326 cmd->idx = ring->cur; 2327 2328 memcpy(cmd->data, buf->data, buf->size); 2329 2330 /* Save and trim IEEE802.11 header. */ 2331 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen); 2332 m_adj(buf->m, hdrlen); 2333 2334 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2335 segs, &nsegs, BUS_DMA_NOWAIT); 2336 if (error != 0 && error != EFBIG) { 2337 device_printf(sc->sc_dev, 2338 "%s: can't map mbuf (error %d)\n", __func__, error); 2339 m_freem(buf->m); 2340 return error; 2341 } 2342 if (error != 0) { 2343 /* Too many DMA segments, linearize mbuf. */ 2344 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1); 2345 if (m1 == NULL) { 2346 device_printf(sc->sc_dev, 2347 "%s: could not defrag mbuf\n", __func__); 2348 m_freem(buf->m); 2349 return ENOBUFS; 2350 } 2351 buf->m = m1; 2352 2353 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2354 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2355 if (error != 0) { 2356 device_printf(sc->sc_dev, 2357 "%s: can't map mbuf (error %d)\n", __func__, 2358 error); 2359 m_freem(buf->m); 2360 return error; 2361 } 2362 } 2363 2364 KASSERT(nsegs < WPI_MAX_SCATTER, 2365 ("too many DMA segments, nsegs (%d) should be less than %d", 2366 nsegs, WPI_MAX_SCATTER)); 2367 2368 data->m = buf->m; 2369 data->ni = buf->ni; 2370 2371 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2372 __func__, ring->qid, ring->cur, totlen, nsegs); 2373 2374 /* Fill TX descriptor. */ 2375 desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs); 2376 /* First DMA segment is used by the TX command. */ 2377 desc->segs[0].addr = htole32(data->cmd_paddr); 2378 desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad); 2379 /* Other DMA segments are for data payload. */ 2380 seg = &segs[0]; 2381 for (i = 1; i <= nsegs; i++) { 2382 desc->segs[i].addr = htole32(seg->ds_addr); 2383 desc->segs[i].len = htole32(seg->ds_len); 2384 seg++; 2385 } 2386 2387 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2388 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2389 BUS_DMASYNC_PREWRITE); 2390 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2391 BUS_DMASYNC_PREWRITE); 2392 2393 /* Kick TX ring. */ 2394 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2395 wpi_update_tx_ring(sc, ring); 2396 2397 /* Mark TX ring as full if we reach a certain threshold. */ 2398 if (++ring->queued > WPI_TX_RING_HIMARK) 2399 sc->qfullmsk |= 1 << ring->qid; 2400 2401 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2402 2403 return 0; 2404} 2405 2406/* 2407 * Construct the data packet for a transmit buffer. 2408 */ 2409static int 2410wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2411{ 2412 const struct ieee80211_txparam *tp; 2413 struct ieee80211vap *vap = ni->ni_vap; 2414 struct ieee80211com *ic = ni->ni_ic; 2415 struct wpi_node *wn = WPI_NODE(ni); 2416 struct ieee80211_channel *chan; 2417 struct ieee80211_frame *wh; 2418 struct ieee80211_key *k = NULL; 2419 struct wpi_cmd_data tx; 2420 struct wpi_buf tx_data; 2421 uint32_t flags; 2422 uint16_t qos; 2423 uint8_t tid, type; 2424 int ac, error, swcrypt, rate, ismcast, totlen; 2425 2426 wh = mtod(m, struct ieee80211_frame *); 2427 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2428 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2429 2430 /* Select EDCA Access Category and TX ring for this frame. */ 2431 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2432 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2433 tid = qos & IEEE80211_QOS_TID; 2434 } else { 2435 qos = 0; 2436 tid = 0; 2437 } 2438 ac = M_WME_GETAC(m); 2439 2440 chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ? 2441 ni->ni_chan : ic->ic_curchan; 2442 tp = &vap->iv_txparms[ieee80211_chan2mode(chan)]; 2443 2444 /* Choose a TX rate index. */ 2445 if (type == IEEE80211_FC0_TYPE_MGT) 2446 rate = tp->mgmtrate; 2447 else if (ismcast) 2448 rate = tp->mcastrate; 2449 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2450 rate = tp->ucastrate; 2451 else if (m->m_flags & M_EAPOL) 2452 rate = tp->mgmtrate; 2453 else { 2454 /* XXX pass pktlen */ 2455 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2456 rate = ni->ni_txrate; 2457 } 2458 2459 /* Encrypt the frame if need be. */ 2460 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2461 /* Retrieve key for TX. */ 2462 k = ieee80211_crypto_encap(ni, m); 2463 if (k == NULL) { 2464 error = ENOBUFS; 2465 goto fail; 2466 } 2467 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2468 2469 /* 802.11 header may have moved. */ 2470 wh = mtod(m, struct ieee80211_frame *); 2471 } 2472 totlen = m->m_pkthdr.len; 2473 2474 if (ieee80211_radiotap_active_vap(vap)) { 2475 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2476 2477 tap->wt_flags = 0; 2478 tap->wt_rate = rate; 2479 if (k != NULL) 2480 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2481 2482 ieee80211_radiotap_tx(vap, m); 2483 } 2484 2485 flags = 0; 2486 if (!ismcast) { 2487 /* Unicast frame, check if an ACK is expected. */ 2488 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2489 IEEE80211_QOS_ACKPOLICY_NOACK) 2490 flags |= WPI_TX_NEED_ACK; 2491 } 2492 2493 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2494 flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */ 2495 2496 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2497 if (!ismcast) { 2498 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2499 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2500 flags |= WPI_TX_NEED_RTS; 2501 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2502 WPI_RATE_IS_OFDM(rate)) { 2503 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2504 flags |= WPI_TX_NEED_CTS; 2505 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2506 flags |= WPI_TX_NEED_RTS; 2507 } 2508 2509 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2510 flags |= WPI_TX_FULL_TXOP; 2511 } 2512 2513 memset(&tx, 0, sizeof (struct wpi_cmd_data)); 2514 if (type == IEEE80211_FC0_TYPE_MGT) { 2515 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2516 2517 /* Tell HW to set timestamp in probe responses. */ 2518 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2519 flags |= WPI_TX_INSERT_TSTAMP; 2520 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2521 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2522 tx.timeout = htole16(3); 2523 else 2524 tx.timeout = htole16(2); 2525 } 2526 2527 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2528 tx.id = WPI_ID_BROADCAST; 2529 else { 2530 if (wn->id == WPI_ID_UNDEFINED && 2531 (vap->iv_opmode == IEEE80211_M_IBSS || 2532 vap->iv_opmode == IEEE80211_M_AHDEMO)) { 2533 error = wpi_add_ibss_node(sc, ni); 2534 if (error != 0) { 2535 device_printf(sc->sc_dev, 2536 "%s: could not add IBSS node, error %d\n", 2537 __func__, error); 2538 goto fail; 2539 } 2540 } 2541 2542 if (wn->id == WPI_ID_UNDEFINED) { 2543 device_printf(sc->sc_dev, 2544 "%s: undefined node id\n", __func__); 2545 error = EINVAL; 2546 goto fail; 2547 } 2548 2549 tx.id = wn->id; 2550 } 2551 2552 if (type != IEEE80211_FC0_TYPE_MGT) 2553 tx.data_ntries = tp->maxretry; 2554 2555 if (k != NULL && !swcrypt) { 2556 switch (k->wk_cipher->ic_cipher) { 2557 case IEEE80211_CIPHER_AES_CCM: 2558 tx.security = WPI_CIPHER_CCMP; 2559 break; 2560 2561 default: 2562 break; 2563 } 2564 2565 memcpy(tx.key, k->wk_key, k->wk_keylen); 2566 } 2567 2568 tx.len = htole16(totlen); 2569 tx.flags = htole32(flags); 2570 tx.plcp = rate2plcp(rate); 2571 tx.tid = tid; 2572 tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2573 tx.ofdm_mask = 0xff; 2574 tx.cck_mask = 0x0f; 2575 tx.rts_ntries = 7; 2576 2577 tx_data.data = &tx; 2578 tx_data.ni = ni; 2579 tx_data.m = m; 2580 tx_data.size = sizeof(tx); 2581 tx_data.code = WPI_CMD_TX_DATA; 2582 tx_data.ac = ac; 2583 2584 return wpi_cmd2(sc, &tx_data); 2585 2586fail: m_freem(m); 2587 return error; 2588} 2589 2590static int 2591wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, 2592 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 2593{ 2594 struct ieee80211vap *vap = ni->ni_vap; 2595 struct ieee80211_frame *wh; 2596 struct wpi_cmd_data tx; 2597 struct wpi_buf tx_data; 2598 uint32_t flags; 2599 uint8_t type; 2600 int ac, rate, totlen; 2601 2602 wh = mtod(m, struct ieee80211_frame *); 2603 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2604 totlen = m->m_pkthdr.len; 2605 2606 ac = params->ibp_pri & 3; 2607 2608 /* Choose a TX rate index. */ 2609 rate = params->ibp_rate0; 2610 2611 flags = 0; 2612 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2613 flags |= WPI_TX_NEED_ACK; 2614 if (params->ibp_flags & IEEE80211_BPF_RTS) 2615 flags |= WPI_TX_NEED_RTS; 2616 if (params->ibp_flags & IEEE80211_BPF_CTS) 2617 flags |= WPI_TX_NEED_CTS; 2618 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2619 flags |= WPI_TX_FULL_TXOP; 2620 2621 if (ieee80211_radiotap_active_vap(vap)) { 2622 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2623 2624 tap->wt_flags = 0; 2625 tap->wt_rate = rate; 2626 2627 ieee80211_radiotap_tx(vap, m); 2628 } 2629 2630 memset(&tx, 0, sizeof (struct wpi_cmd_data)); 2631 if (type == IEEE80211_FC0_TYPE_MGT) { 2632 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2633 2634 /* Tell HW to set timestamp in probe responses. */ 2635 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2636 flags |= WPI_TX_INSERT_TSTAMP; 2637 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2638 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2639 tx.timeout = htole16(3); 2640 else 2641 tx.timeout = htole16(2); 2642 } 2643 2644 tx.len = htole16(totlen); 2645 tx.flags = htole32(flags); 2646 tx.plcp = rate2plcp(rate); 2647 tx.id = WPI_ID_BROADCAST; 2648 tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2649 tx.rts_ntries = params->ibp_try1; 2650 tx.data_ntries = params->ibp_try0; 2651 2652 tx_data.data = &tx; 2653 tx_data.ni = ni; 2654 tx_data.m = m; 2655 tx_data.size = sizeof(tx); 2656 tx_data.code = WPI_CMD_TX_DATA; 2657 tx_data.ac = ac; 2658 2659 return wpi_cmd2(sc, &tx_data); 2660} 2661 2662static int 2663wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2664 const struct ieee80211_bpf_params *params) 2665{ 2666 struct ieee80211com *ic = ni->ni_ic; 2667 struct ifnet *ifp = ic->ic_ifp; 2668 struct wpi_softc *sc = ifp->if_softc; 2669 int error = 0; 2670 2671 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2672 2673 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2674 ieee80211_free_node(ni); 2675 m_freem(m); 2676 return ENETDOWN; 2677 } 2678 2679 WPI_LOCK(sc); 2680 if (params == NULL) { 2681 /* 2682 * Legacy path; interpret frame contents to decide 2683 * precisely how to send the frame. 2684 */ 2685 error = wpi_tx_data(sc, m, ni); 2686 } else { 2687 /* 2688 * Caller supplied explicit parameters to use in 2689 * sending the frame. 2690 */ 2691 error = wpi_tx_data_raw(sc, m, ni, params); 2692 } 2693 WPI_UNLOCK(sc); 2694 2695 if (error != 0) { 2696 /* NB: m is reclaimed on tx failure */ 2697 ieee80211_free_node(ni); 2698 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2699 2700 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2701 2702 return error; 2703 } 2704 2705 sc->sc_tx_timer = 5; 2706 2707 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2708 2709 return 0; 2710} 2711 2712/** 2713 * Process data waiting to be sent on the IFNET output queue 2714 */ 2715static void 2716wpi_start(struct ifnet *ifp) 2717{ 2718 struct wpi_softc *sc = ifp->if_softc; 2719 2720 WPI_LOCK(sc); 2721 wpi_start_locked(ifp); 2722 WPI_UNLOCK(sc); 2723} 2724 2725static void 2726wpi_start_locked(struct ifnet *ifp) 2727{ 2728 struct wpi_softc *sc = ifp->if_softc; 2729 struct ieee80211_node *ni; 2730 struct mbuf *m; 2731 2732 WPI_LOCK_ASSERT(sc); 2733 2734 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 2735 2736 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2737 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) 2738 return; 2739 2740 for (;;) { 2741 if (sc->qfullmsk != 0) { 2742 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2743 break; 2744 } 2745 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2746 if (m == NULL) 2747 break; 2748 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 2749 if (wpi_tx_data(sc, m, ni) != 0) { 2750 WPI_UNLOCK(sc); 2751 ieee80211_free_node(ni); 2752 WPI_LOCK(sc); 2753 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2754 } else 2755 sc->sc_tx_timer = 5; 2756 } 2757 2758 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 2759} 2760 2761static void 2762wpi_watchdog_rfkill(void *arg) 2763{ 2764 struct wpi_softc *sc = arg; 2765 struct ifnet *ifp = sc->sc_ifp; 2766 struct ieee80211com *ic = ifp->if_l2com; 2767 2768 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n"); 2769 2770 /* No need to lock firmware memory. */ 2771 if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) { 2772 /* Radio kill switch is still off. */ 2773 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 2774 sc); 2775 } else 2776 ieee80211_runtask(ic, &sc->sc_radioon_task); 2777} 2778 2779/** 2780 * Called every second, wpi_watchdog used by the watch dog timer 2781 * to check that the card is still alive 2782 */ 2783static void 2784wpi_watchdog(void *arg) 2785{ 2786 struct wpi_softc *sc = arg; 2787 struct ifnet *ifp = sc->sc_ifp; 2788 struct ieee80211com *ic = ifp->if_l2com; 2789 2790 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "Watchdog: tick\n"); 2791 2792 if (sc->sc_tx_timer > 0) { 2793 if (--sc->sc_tx_timer == 0) { 2794 if_printf(ifp, "device timeout\n"); 2795 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2796 ieee80211_runtask(ic, &sc->sc_reinittask); 2797 } 2798 } 2799 2800 if (sc->sc_scan_timer > 0) { 2801 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2802 if (--sc->sc_scan_timer == 0 && vap != NULL) { 2803 if_printf(ifp, "scan timeout\n"); 2804 ieee80211_cancel_scan(vap); 2805 ieee80211_runtask(ic, &sc->sc_reinittask); 2806 } 2807 } 2808 2809 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2810 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2811} 2812 2813static int 2814wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2815{ 2816 struct wpi_softc *sc = ifp->if_softc; 2817 struct ieee80211com *ic = ifp->if_l2com; 2818 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2819 struct ifreq *ifr = (struct ifreq *) data; 2820 int error = 0, startall = 0, stop = 0; 2821 2822 switch (cmd) { 2823 case SIOCGIFADDR: 2824 error = ether_ioctl(ifp, cmd, data); 2825 break; 2826 case SIOCSIFFLAGS: 2827 WPI_LOCK(sc); 2828 if (ifp->if_flags & IFF_UP) { 2829 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2830 wpi_init_locked(sc); 2831 if (WPI_READ(sc, WPI_GP_CNTRL) & 2832 WPI_GP_CNTRL_RFKILL) 2833 startall = 1; 2834 else 2835 stop = 1; 2836 } 2837 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2838 wpi_stop_locked(sc); 2839 WPI_UNLOCK(sc); 2840 if (startall) 2841 ieee80211_start_all(ic); 2842 else if (vap != NULL && stop) 2843 ieee80211_stop(vap); 2844 break; 2845 case SIOCGIFMEDIA: 2846 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2847 break; 2848 default: 2849 error = EINVAL; 2850 break; 2851 } 2852 return error; 2853} 2854 2855/* 2856 * Send a command to the firmware. 2857 */ 2858static int 2859wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size, 2860 int async) 2861{ 2862 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 2863 struct wpi_tx_desc *desc; 2864 struct wpi_tx_data *data; 2865 struct wpi_tx_cmd *cmd; 2866 struct mbuf *m; 2867 bus_addr_t paddr; 2868 int totlen, error; 2869 2870 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2871 2872 if (async == 0) 2873 WPI_LOCK_ASSERT(sc); 2874 2875 DPRINTF(sc, WPI_DEBUG_CMD, "wpi_cmd %s size %zu async %d\n", 2876 wpi_cmd_str(code), size, async); 2877 2878 if (sc->flags & WPI_FLAG_BUSY) { 2879 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2880 __func__, code); 2881 return EAGAIN; 2882 } 2883 sc->flags |= WPI_FLAG_BUSY; 2884 2885 desc = &ring->desc[ring->cur]; 2886 data = &ring->data[ring->cur]; 2887 totlen = 4 + size; 2888 2889 if (size > sizeof cmd->data) { 2890 /* Command is too large to fit in a descriptor. */ 2891 if (totlen > MCLBYTES) 2892 return EINVAL; 2893 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 2894 if (m == NULL) 2895 return ENOMEM; 2896 cmd = mtod(m, struct wpi_tx_cmd *); 2897 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 2898 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 2899 if (error != 0) { 2900 m_freem(m); 2901 return error; 2902 } 2903 data->m = m; 2904 } else { 2905 cmd = &ring->cmd[ring->cur]; 2906 paddr = data->cmd_paddr; 2907 } 2908 2909 cmd->code = code; 2910 cmd->flags = 0; 2911 cmd->qid = ring->qid; 2912 cmd->idx = ring->cur; 2913 memcpy(cmd->data, buf, size); 2914 2915 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 2916 desc->segs[0].addr = htole32(paddr); 2917 desc->segs[0].len = htole32(totlen); 2918 2919 if (size > sizeof cmd->data) { 2920 bus_dmamap_sync(ring->data_dmat, data->map, 2921 BUS_DMASYNC_PREWRITE); 2922 } else { 2923 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2924 BUS_DMASYNC_PREWRITE); 2925 } 2926 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2927 BUS_DMASYNC_PREWRITE); 2928 2929 /* Kick command ring. */ 2930 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2931 wpi_update_tx_ring(sc, ring); 2932 2933 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2934 2935 if (async) { 2936 sc->flags &= ~WPI_FLAG_BUSY; 2937 return 0; 2938 } 2939 2940 return mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2941} 2942 2943/* 2944 * Configure HW multi-rate retries. 2945 */ 2946static int 2947wpi_mrr_setup(struct wpi_softc *sc) 2948{ 2949 struct ifnet *ifp = sc->sc_ifp; 2950 struct ieee80211com *ic = ifp->if_l2com; 2951 struct wpi_mrr_setup mrr; 2952 int i, error; 2953 2954 /* CCK rates (not used with 802.11a). */ 2955 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 2956 mrr.rates[i].flags = 0; 2957 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2958 /* Fallback to the immediate lower CCK rate (if any.) */ 2959 mrr.rates[i].next = 2960 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 2961 /* Try one time at this rate before falling back to "next". */ 2962 mrr.rates[i].ntries = 1; 2963 } 2964 /* OFDM rates (not used with 802.11b). */ 2965 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 2966 mrr.rates[i].flags = 0; 2967 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2968 /* Fallback to the immediate lower rate (if any.) */ 2969 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 2970 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 2971 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2972 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 2973 i - 1; 2974 /* Try one time at this rate before falling back to "next". */ 2975 mrr.rates[i].ntries = 1; 2976 } 2977 /* Setup MRR for control frames. */ 2978 mrr.which = htole32(WPI_MRR_CTL); 2979 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2980 if (error != 0) { 2981 device_printf(sc->sc_dev, 2982 "could not setup MRR for control frames\n"); 2983 return error; 2984 } 2985 /* Setup MRR for data frames. */ 2986 mrr.which = htole32(WPI_MRR_DATA); 2987 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2988 if (error != 0) { 2989 device_printf(sc->sc_dev, 2990 "could not setup MRR for data frames\n"); 2991 return error; 2992 } 2993 return 0; 2994} 2995 2996static int 2997wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 2998{ 2999 struct ieee80211com *ic = ni->ni_ic; 3000 struct wpi_node *wn = WPI_NODE(ni); 3001 struct wpi_node_info node; 3002 3003 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3004 3005 if (wn->id == WPI_ID_UNDEFINED) 3006 return EINVAL; 3007 3008 memset(&node, 0, sizeof node); 3009 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3010 node.id = wn->id; 3011 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3012 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3013 node.action = htole32(WPI_ACTION_SET_RATE); 3014 node.antenna = WPI_ANTENNA_BOTH; 3015 3016 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 3017} 3018 3019/* 3020 * Broadcast node is used to send group-addressed and management frames. 3021 */ 3022static int 3023wpi_add_broadcast_node(struct wpi_softc *sc, int async) 3024{ 3025 struct ifnet *ifp = sc->sc_ifp; 3026 struct ieee80211com *ic = ifp->if_l2com; 3027 struct wpi_node_info node; 3028 3029 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3030 3031 memset(&node, 0, sizeof node); 3032 IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr); 3033 node.id = WPI_ID_BROADCAST; 3034 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3035 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3036 node.action = htole32(WPI_ACTION_SET_RATE); 3037 node.antenna = WPI_ANTENNA_BOTH; 3038 3039 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 3040} 3041 3042static int 3043wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3044{ 3045 struct wpi_node *wn = WPI_NODE(ni); 3046 int error; 3047 3048 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3049 3050 wn->id = wpi_add_node_entry_sta(sc); 3051 3052 if ((error = wpi_add_node(sc, ni)) != 0) { 3053 wpi_del_node_entry(sc, wn->id); 3054 wn->id = WPI_ID_UNDEFINED; 3055 return error; 3056 } 3057 3058 return 0; 3059} 3060 3061static int 3062wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3063{ 3064 struct wpi_node *wn = WPI_NODE(ni); 3065 int error; 3066 3067 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3068 3069 if (wn->id != WPI_ID_UNDEFINED) 3070 return EINVAL; 3071 3072 if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) { 3073 device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__); 3074 return ENOMEM; 3075 } 3076 3077 if ((error = wpi_add_node(sc, ni)) != 0) { 3078 wpi_del_node_entry(sc, wn->id); 3079 wn->id = WPI_ID_UNDEFINED; 3080 return error; 3081 } 3082 3083 return 0; 3084} 3085 3086static void 3087wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3088{ 3089 struct wpi_node *wn = WPI_NODE(ni); 3090 struct wpi_cmd_del_node node; 3091 int error; 3092 3093 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3094 3095 if (wn->id == WPI_ID_UNDEFINED) { 3096 device_printf(sc->sc_dev, "%s: undefined node id passed\n", 3097 __func__); 3098 return; 3099 } 3100 3101 memset(&node, 0, sizeof node); 3102 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3103 node.count = 1; 3104 3105 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3106 if (error != 0) { 3107 device_printf(sc->sc_dev, 3108 "%s: could not delete node %u, error %d\n", __func__, 3109 wn->id, error); 3110 } 3111} 3112 3113static int 3114wpi_updateedca(struct ieee80211com *ic) 3115{ 3116#define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3117 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3118 struct wpi_edca_params cmd; 3119 int aci, error; 3120 3121 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3122 3123 memset(&cmd, 0, sizeof cmd); 3124 cmd.flags = htole32(WPI_EDCA_UPDATE); 3125 for (aci = 0; aci < WME_NUM_AC; aci++) { 3126 const struct wmeParams *ac = 3127 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 3128 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3129 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3130 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3131 cmd.ac[aci].txoplimit = 3132 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3133 3134 DPRINTF(sc, WPI_DEBUG_EDCA, 3135 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3136 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3137 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3138 cmd.ac[aci].txoplimit); 3139 } 3140 IEEE80211_UNLOCK(ic); 3141 WPI_LOCK(sc); 3142 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3143 WPI_UNLOCK(sc); 3144 IEEE80211_LOCK(ic); 3145 3146 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3147 3148 return error; 3149#undef WPI_EXP2 3150} 3151 3152static void 3153wpi_set_promisc(struct wpi_softc *sc) 3154{ 3155 struct ifnet *ifp = sc->sc_ifp; 3156 uint32_t promisc_filter; 3157 3158 promisc_filter = WPI_FILTER_PROMISC | WPI_FILTER_CTL; 3159 3160 if (ifp->if_flags & IFF_PROMISC) 3161 sc->rxon.filter |= htole32(promisc_filter); 3162 else 3163 sc->rxon.filter &= ~htole32(promisc_filter); 3164} 3165 3166static void 3167wpi_update_promisc(struct ifnet *ifp) 3168{ 3169 struct wpi_softc *sc = ifp->if_softc; 3170 3171 wpi_set_promisc(sc); 3172 3173 WPI_LOCK(sc); 3174 if (wpi_send_rxon(sc, 1, 1) != 0) { 3175 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3176 __func__); 3177 } 3178 WPI_UNLOCK(sc); 3179} 3180 3181static void 3182wpi_update_mcast(struct ifnet *ifp) 3183{ 3184 /* Ignore */ 3185} 3186 3187static void 3188wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3189{ 3190 struct wpi_cmd_led led; 3191 3192 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3193 3194 led.which = which; 3195 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3196 led.off = off; 3197 led.on = on; 3198 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3199} 3200 3201static int 3202wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3203{ 3204 struct wpi_cmd_timing cmd; 3205 uint64_t val, mod; 3206 3207 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3208 3209 memset(&cmd, 0, sizeof cmd); 3210 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3211 cmd.bintval = htole16(ni->ni_intval); 3212 cmd.lintval = htole16(10); 3213 3214 /* Compute remaining time until next beacon. */ 3215 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3216 mod = le64toh(cmd.tstamp) % val; 3217 cmd.binitval = htole32((uint32_t)(val - mod)); 3218 3219 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3220 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3221 3222 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3223} 3224 3225/* 3226 * This function is called periodically (every 60 seconds) to adjust output 3227 * power to temperature changes. 3228 */ 3229static void 3230wpi_power_calibration(struct wpi_softc *sc) 3231{ 3232 int temp; 3233 3234 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3235 3236 /* Update sensor data. */ 3237 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3238 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3239 3240 /* Sanity-check read value. */ 3241 if (temp < -260 || temp > 25) { 3242 /* This can't be correct, ignore. */ 3243 DPRINTF(sc, WPI_DEBUG_TEMP, 3244 "out-of-range temperature reported: %d\n", temp); 3245 return; 3246 } 3247 3248 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3249 3250 /* Adjust Tx power if need be. */ 3251 if (abs(temp - sc->temp) <= 6) 3252 return; 3253 3254 sc->temp = temp; 3255 3256 if (wpi_set_txpower(sc, 1) != 0) { 3257 /* just warn, too bad for the automatic calibration... */ 3258 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3259 } 3260} 3261 3262/* 3263 * Set TX power for current channel. 3264 */ 3265static int 3266wpi_set_txpower(struct wpi_softc *sc, int async) 3267{ 3268 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3269 struct ieee80211_channel *ch; 3270 struct wpi_power_group *group; 3271 struct wpi_cmd_txpower cmd; 3272 uint8_t chan; 3273 int idx, i; 3274 3275 /* Retrieve current channel from last RXON. */ 3276 chan = sc->rxon.chan; 3277 ch = &ic->ic_channels[chan]; 3278 3279 /* Find the TX power group to which this channel belongs. */ 3280 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3281 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3282 if (chan <= group->chan) 3283 break; 3284 } else 3285 group = &sc->groups[0]; 3286 3287 memset(&cmd, 0, sizeof cmd); 3288 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1; 3289 cmd.chan = htole16(chan); 3290 3291 /* Set TX power for all OFDM and CCK rates. */ 3292 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3293 /* Retrieve TX power for this channel/rate. */ 3294 idx = wpi_get_power_index(sc, group, ch, i); 3295 3296 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3297 3298 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3299 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3300 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3301 } else { 3302 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3303 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3304 } 3305 DPRINTF(sc, WPI_DEBUG_TEMP, 3306 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3307 } 3308 3309 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3310} 3311 3312/* 3313 * Determine Tx power index for a given channel/rate combination. 3314 * This takes into account the regulatory information from EEPROM and the 3315 * current temperature. 3316 */ 3317static int 3318wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3319 struct ieee80211_channel *c, int ridx) 3320{ 3321/* Fixed-point arithmetic division using a n-bit fractional part. */ 3322#define fdivround(a, b, n) \ 3323 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3324 3325/* Linear interpolation. */ 3326#define interpolate(x, x1, y1, x2, y2, n) \ 3327 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3328 3329 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3330 struct wpi_power_sample *sample; 3331 int pwr, idx; 3332 u_int chan; 3333 3334 /* Get channel number. */ 3335 chan = ieee80211_chan2ieee(ic, c); 3336 3337 /* Default TX power is group maximum TX power minus 3dB. */ 3338 pwr = group->maxpwr / 2; 3339 3340 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3341 switch (ridx) { 3342 case WPI_RIDX_OFDM36: 3343 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3344 break; 3345 case WPI_RIDX_OFDM48: 3346 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3347 break; 3348 case WPI_RIDX_OFDM54: 3349 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3350 break; 3351 } 3352 3353 /* Never exceed the channel maximum allowed TX power. */ 3354 pwr = min(pwr, sc->maxpwr[chan]); 3355 3356 /* Retrieve TX power index into gain tables from samples. */ 3357 for (sample = group->samples; sample < &group->samples[3]; sample++) 3358 if (pwr > sample[1].power) 3359 break; 3360 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3361 idx = interpolate(pwr, sample[0].power, sample[0].index, 3362 sample[1].power, sample[1].index, 19); 3363 3364 /*- 3365 * Adjust power index based on current temperature: 3366 * - if cooler than factory-calibrated: decrease output power 3367 * - if warmer than factory-calibrated: increase output power 3368 */ 3369 idx -= (sc->temp - group->temp) * 11 / 100; 3370 3371 /* Decrease TX power for CCK rates (-5dB). */ 3372 if (ridx >= WPI_RIDX_CCK1) 3373 idx += 10; 3374 3375 /* Make sure idx stays in a valid range. */ 3376 if (idx < 0) 3377 return 0; 3378 if (idx > WPI_MAX_PWR_INDEX) 3379 return WPI_MAX_PWR_INDEX; 3380 return idx; 3381 3382#undef interpolate 3383#undef fdivround 3384} 3385 3386/* 3387 * Set STA mode power saving level (between 0 and 5). 3388 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3389 */ 3390static int 3391wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3392{ 3393 struct wpi_pmgt_cmd cmd; 3394 const struct wpi_pmgt *pmgt; 3395 uint32_t max, skip_dtim; 3396 uint32_t reg; 3397 int i; 3398 3399 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3400 "%s: dtim=%d, level=%d, async=%d\n", 3401 __func__, dtim, level, async); 3402 3403 /* Select which PS parameters to use. */ 3404 if (dtim <= 10) 3405 pmgt = &wpi_pmgt[0][level]; 3406 else 3407 pmgt = &wpi_pmgt[1][level]; 3408 3409 memset(&cmd, 0, sizeof cmd); 3410 if (level != 0) /* not CAM */ 3411 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3412 /* Retrieve PCIe Active State Power Management (ASPM). */ 3413 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 3414 if (!(reg & 0x1)) /* L0s Entry disabled. */ 3415 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3416 3417 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3418 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3419 3420 if (dtim == 0) { 3421 dtim = 1; 3422 skip_dtim = 0; 3423 } else 3424 skip_dtim = pmgt->skip_dtim; 3425 3426 if (skip_dtim != 0) { 3427 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3428 max = pmgt->intval[4]; 3429 if (max == (uint32_t)-1) 3430 max = dtim * (skip_dtim + 1); 3431 else if (max > dtim) 3432 max = (max / dtim) * dtim; 3433 } else 3434 max = dtim; 3435 3436 for (i = 0; i < 5; i++) 3437 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3438 3439 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3440} 3441 3442static int 3443wpi_send_btcoex(struct wpi_softc *sc) 3444{ 3445 struct wpi_bluetooth cmd; 3446 3447 memset(&cmd, 0, sizeof cmd); 3448 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3449 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3450 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3451 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3452 __func__); 3453 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3454} 3455 3456static int 3457wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3458{ 3459 int error; 3460 3461 if (assoc && (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3462 struct wpi_assoc rxon_assoc; 3463 3464 rxon_assoc.flags = sc->rxon.flags; 3465 rxon_assoc.filter = sc->rxon.filter; 3466 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3467 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3468 rxon_assoc.reserved = 0; 3469 3470 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3471 sizeof (struct wpi_assoc), async); 3472 } else { 3473 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3474 sizeof (struct wpi_rxon), async); 3475 3476 wpi_clear_node_table(sc); 3477 } 3478 if (error != 0) { 3479 device_printf(sc->sc_dev, "RXON command failed, error %d\n", 3480 error); 3481 return error; 3482 } 3483 3484 /* Configuration has changed, set Tx power accordingly. */ 3485 if ((error = wpi_set_txpower(sc, async)) != 0) { 3486 device_printf(sc->sc_dev, 3487 "%s: could not set TX power, error %d\n", __func__, error); 3488 return error; 3489 } 3490 3491 if (!(sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3492 /* Add broadcast node. */ 3493 error = wpi_add_broadcast_node(sc, async); 3494 if (error != 0) { 3495 device_printf(sc->sc_dev, 3496 "could not add broadcast node, error %d\n", error); 3497 return error; 3498 } 3499 } 3500 3501 return 0; 3502} 3503 3504/** 3505 * Configure the card to listen to a particular channel, this transisions the 3506 * card in to being able to receive frames from remote devices. 3507 */ 3508static int 3509wpi_config(struct wpi_softc *sc) 3510{ 3511 struct ifnet *ifp = sc->sc_ifp; 3512 struct ieee80211com *ic = ifp->if_l2com; 3513 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3514 uint32_t flags; 3515 int error; 3516 3517 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3518 3519 /* Set power saving level to CAM during initialization. */ 3520 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3521 device_printf(sc->sc_dev, 3522 "%s: could not set power saving level\n", __func__); 3523 return error; 3524 } 3525 3526 /* Configure bluetooth coexistence. */ 3527 if ((error = wpi_send_btcoex(sc)) != 0) { 3528 device_printf(sc->sc_dev, 3529 "could not configure bluetooth coexistence\n"); 3530 return error; 3531 } 3532 3533 /* Configure adapter. */ 3534 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3535 IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr); 3536 3537 /* Set default channel. */ 3538 sc->rxon.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3539 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3540 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 3541 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3542 3543 sc->rxon.filter = WPI_FILTER_MULTICAST; 3544 switch (ic->ic_opmode) { 3545 case IEEE80211_M_STA: 3546 sc->rxon.mode = WPI_MODE_STA; 3547 break; 3548 case IEEE80211_M_IBSS: 3549 sc->rxon.mode = WPI_MODE_IBSS; 3550 sc->rxon.filter |= WPI_FILTER_BEACON; 3551 break; 3552 /* XXX workaround for passive channels selection */ 3553 case IEEE80211_M_AHDEMO: 3554 case IEEE80211_M_HOSTAP: 3555 sc->rxon.mode = WPI_MODE_HOSTAP; 3556 break; 3557 case IEEE80211_M_MONITOR: 3558 sc->rxon.mode = WPI_MODE_MONITOR; 3559 break; 3560 default: 3561 device_printf(sc->sc_dev, "unknown opmode %d\n", 3562 ic->ic_opmode); 3563 return EINVAL; 3564 } 3565 sc->rxon.filter = htole32(sc->rxon.filter); 3566 wpi_set_promisc(sc); 3567 sc->rxon.cck_mask = 0x0f; /* not yet negotiated */ 3568 sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */ 3569 3570 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) { 3571 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3572 __func__); 3573 return error; 3574 } 3575 3576 /* Setup rate scalling. */ 3577 if ((error = wpi_mrr_setup(sc)) != 0) { 3578 device_printf(sc->sc_dev, "could not setup MRR, error %d\n", 3579 error); 3580 return error; 3581 } 3582 3583 /* Disable beacon notifications (unused). */ 3584 flags = WPI_STATISTICS_BEACON_DISABLE; 3585 error = wpi_cmd(sc, WPI_CMD_GET_STATISTICS, &flags, sizeof flags, 1); 3586 if (error != 0) { 3587 device_printf(sc->sc_dev, 3588 "could not disable beacon statistics, error %d\n", error); 3589 return error; 3590 } 3591 3592 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3593 3594 return 0; 3595} 3596 3597static uint16_t 3598wpi_get_active_dwell_time(struct wpi_softc *sc, 3599 struct ieee80211_channel *c, uint8_t n_probes) 3600{ 3601 /* No channel? Default to 2GHz settings. */ 3602 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) { 3603 return (WPI_ACTIVE_DWELL_TIME_2GHZ + 3604 WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1)); 3605 } 3606 3607 /* 5GHz dwell time. */ 3608 return (WPI_ACTIVE_DWELL_TIME_5GHZ + 3609 WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1)); 3610} 3611 3612/* 3613 * Limit the total dwell time to 85% of the beacon interval. 3614 * 3615 * Returns the dwell time in milliseconds. 3616 */ 3617static uint16_t 3618wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time) 3619{ 3620 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3621 struct ieee80211vap *vap = NULL; 3622 int bintval = 0; 3623 3624 /* bintval is in TU (1.024mS) */ 3625 if (! TAILQ_EMPTY(&ic->ic_vaps)) { 3626 vap = TAILQ_FIRST(&ic->ic_vaps); 3627 bintval = vap->iv_bss->ni_intval; 3628 } 3629 3630 /* 3631 * If it's non-zero, we should calculate the minimum of 3632 * it and the DWELL_BASE. 3633 * 3634 * XXX Yes, the math should take into account that bintval 3635 * is 1.024mS, not 1mS.. 3636 */ 3637 if (bintval > 0) { 3638 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 3639 bintval); 3640 return (MIN(WPI_PASSIVE_DWELL_BASE, ((bintval * 85) / 100))); 3641 } 3642 3643 /* No association context? Default. */ 3644 return (WPI_PASSIVE_DWELL_BASE); 3645} 3646 3647static uint16_t 3648wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 3649{ 3650 uint16_t passive; 3651 3652 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 3653 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 3654 else 3655 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 3656 3657 /* Clamp to the beacon interval if we're associated. */ 3658 return (wpi_limit_dwell(sc, passive)); 3659} 3660 3661/* 3662 * Send a scan request to the firmware. 3663 */ 3664static int 3665wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 3666{ 3667 struct ifnet *ifp = sc->sc_ifp; 3668 struct ieee80211com *ic = ifp->if_l2com; 3669 struct ieee80211_scan_state *ss = ic->ic_scan; 3670 struct ieee80211vap *vap = ss->ss_vap; 3671 struct wpi_scan_hdr *hdr; 3672 struct wpi_cmd_data *tx; 3673 struct wpi_scan_essid *essids; 3674 struct wpi_scan_chan *chan; 3675 struct ieee80211_frame *wh; 3676 struct ieee80211_rateset *rs; 3677 uint16_t dwell_active, dwell_passive; 3678 uint8_t *buf, *frm; 3679 int buflen, error, i, nssid; 3680 3681 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3682 3683 /* 3684 * We are absolutely not allowed to send a scan command when another 3685 * scan command is pending. 3686 */ 3687 if (sc->sc_scan_timer) { 3688 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 3689 __func__); 3690 3691 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3692 3693 return (EAGAIN); 3694 } 3695 3696 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 3697 if (buf == NULL) { 3698 device_printf(sc->sc_dev, 3699 "%s: could not allocate buffer for scan command\n", 3700 __func__); 3701 error = ENOMEM; 3702 goto fail; 3703 } 3704 hdr = (struct wpi_scan_hdr *)buf; 3705 3706 /* 3707 * Move to the next channel if no packets are received within 10 msecs 3708 * after sending the probe request. 3709 */ 3710 hdr->quiet_time = htole16(10); /* timeout in milliseconds */ 3711 hdr->quiet_threshold = htole16(1); /* min # of packets */ 3712 /* 3713 * Max needs to be greater than active and passive and quiet! 3714 * It's also in microseconds! 3715 */ 3716 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 3717 hdr->pause_svc = htole32((4 << 24) | 3718 (100 * IEEE80211_DUR_TU)); /* Hardcode for now */ 3719 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 3720 3721 tx = (struct wpi_cmd_data *)(hdr + 1); 3722 tx->flags = htole32(WPI_TX_AUTO_SEQ); 3723 tx->id = WPI_ID_BROADCAST; 3724 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 3725 3726 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3727 /* Send probe requests at 6Mbps. */ 3728 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 3729 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 3730 } else { 3731 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 3732 /* Send probe requests at 1Mbps. */ 3733 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3734 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 3735 } 3736 3737 essids = (struct wpi_scan_essid *)(tx + 1); 3738 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 3739 for (i = 0; i < nssid; i++) { 3740 essids[i].id = IEEE80211_ELEMID_SSID; 3741 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 3742 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 3743#ifdef WPI_DEBUG 3744 if (sc->sc_debug & WPI_DEBUG_SCAN) { 3745 printf("Scanning Essid: "); 3746 ieee80211_print_essid(essids[i].data, essids[i].len); 3747 printf("\n"); 3748 } 3749#endif 3750 } 3751 3752 /* 3753 * Build a probe request frame. Most of the following code is a 3754 * copy & paste of what is done in net80211. 3755 */ 3756 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 3757 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 3758 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 3759 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 3760 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 3761 IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr); 3762 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 3763 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 3764 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 3765 3766 frm = (uint8_t *)(wh + 1); 3767 frm = ieee80211_add_ssid(frm, NULL, 0); 3768 frm = ieee80211_add_rates(frm, rs); 3769 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 3770 frm = ieee80211_add_xrates(frm, rs); 3771 3772 /* Set length of probe request. */ 3773 tx->len = htole16(frm - (uint8_t *)wh); 3774 3775 /* 3776 * Construct information about the channel that we 3777 * want to scan. The firmware expects this to be directly 3778 * after the scan probe request 3779 */ 3780 chan = (struct wpi_scan_chan *)frm; 3781 chan->chan = htole16(ieee80211_chan2ieee(ic, c)); 3782 chan->flags = 0; 3783 if (nssid) { 3784 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 3785 chan->flags |= WPI_CHAN_NPBREQS(nssid); 3786 } else 3787 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 3788 3789 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 3790 chan->flags |= WPI_CHAN_ACTIVE; 3791 3792 /* 3793 * Calculate the active/passive dwell times. 3794 */ 3795 3796 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 3797 dwell_passive = wpi_get_passive_dwell_time(sc, c); 3798 3799 /* Make sure they're valid. */ 3800 if (dwell_passive <= dwell_active) 3801 dwell_passive = dwell_active + 1; 3802 3803 chan->active = htole16(dwell_active); 3804 chan->passive = htole16(dwell_passive); 3805 3806 chan->dsp_gain = 0x6e; /* Default level */ 3807 3808 if (IEEE80211_IS_CHAN_5GHZ(c)) 3809 chan->rf_gain = 0x3b; 3810 else 3811 chan->rf_gain = 0x28; 3812 3813 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 3814 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 3815 3816 hdr->nchan++; 3817 chan++; 3818 3819 buflen = (uint8_t *)chan - buf; 3820 hdr->len = htole16(buflen); 3821 3822 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 3823 hdr->nchan); 3824 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 3825 free(buf, M_DEVBUF); 3826 3827 if (error != 0) 3828 goto fail; 3829 3830 sc->sc_scan_timer = 5; 3831 3832 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3833 3834 return 0; 3835 3836fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3837 3838 return error; 3839} 3840 3841static int 3842wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 3843{ 3844 struct ieee80211com *ic = vap->iv_ic; 3845 struct ieee80211_node *ni = vap->iv_bss; 3846 int error; 3847 3848 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3849 3850 /* Update adapter configuration. */ 3851 sc->rxon.associd = 0; 3852 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 3853 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 3854 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 3855 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3856 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 3857 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3858 if (ic->ic_flags & IEEE80211_F_SHSLOT) 3859 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 3860 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 3861 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 3862 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 3863 sc->rxon.cck_mask = 0; 3864 sc->rxon.ofdm_mask = 0x15; 3865 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 3866 sc->rxon.cck_mask = 0x03; 3867 sc->rxon.ofdm_mask = 0; 3868 } else { 3869 /* Assume 802.11b/g. */ 3870 sc->rxon.cck_mask = 0x0f; 3871 sc->rxon.ofdm_mask = 0x15; 3872 } 3873 3874 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n", 3875 sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask, 3876 sc->rxon.ofdm_mask); 3877 3878 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 3879 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3880 __func__); 3881 } 3882 3883 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3884 3885 return error; 3886} 3887 3888static int 3889wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 3890{ 3891 struct ifnet *ifp = sc->sc_ifp; 3892 struct ieee80211com *ic = ifp->if_l2com; 3893 struct ieee80211vap *vap = ni->ni_vap; 3894 struct wpi_vap *wvp = WPI_VAP(vap); 3895 struct wpi_buf *bcn = &wvp->wv_bcbuf; 3896 struct ieee80211_beacon_offsets bo; 3897 struct wpi_cmd_beacon *cmd; 3898 struct mbuf *m; 3899 int totlen; 3900 3901 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3902 3903 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 3904 return EINVAL; 3905 3906 m = ieee80211_beacon_alloc(ni, &bo); 3907 if (m == NULL) { 3908 device_printf(sc->sc_dev, 3909 "%s: could not allocate beacon frame\n", __func__); 3910 return ENOMEM; 3911 } 3912 totlen = m->m_pkthdr.len; 3913 3914 if (bcn->data == NULL) { 3915 cmd = malloc(sizeof(struct wpi_cmd_beacon), M_DEVBUF, 3916 M_NOWAIT | M_ZERO); 3917 3918 if (cmd == NULL) { 3919 device_printf(sc->sc_dev, 3920 "could not allocate buffer for beacon command\n"); 3921 m_freem(m); 3922 return ENOMEM; 3923 } 3924 3925 cmd->id = WPI_ID_BROADCAST; 3926 cmd->ofdm_mask = 0xff; 3927 cmd->cck_mask = 0x0f; 3928 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 3929 cmd->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 3930 3931 bcn->data = cmd; 3932 bcn->ni = NULL; 3933 bcn->code = WPI_CMD_SET_BEACON; 3934 bcn->ac = 4; 3935 bcn->size = sizeof(struct wpi_cmd_beacon); 3936 } else 3937 cmd = bcn->data; 3938 3939 cmd->len = htole16(totlen); 3940 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3941 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3942 3943 /* NB: m will be freed in wpi_cmd_done() */ 3944 bcn->m = m; 3945 3946 return wpi_cmd2(sc, bcn); 3947} 3948 3949static void 3950wpi_update_beacon(struct ieee80211vap *vap, int item) 3951{ 3952 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 3953 struct ieee80211_node *ni = vap->iv_bss; 3954 int error; 3955 3956 WPI_LOCK(sc); 3957 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 3958 device_printf(sc->sc_dev, 3959 "%s: could not update beacon frame, error %d", __func__, 3960 error); 3961 } 3962 WPI_UNLOCK(sc); 3963} 3964 3965static int 3966wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 3967{ 3968 struct ieee80211com *ic = vap->iv_ic; 3969 struct ieee80211_node *ni = vap->iv_bss; 3970 int error; 3971 3972 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3973 3974 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 3975 /* Link LED blinks while monitoring. */ 3976 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3977 return 0; 3978 } 3979 3980 /* XXX kernel panic workaround */ 3981 if (ni->ni_chan == IEEE80211_CHAN_ANYC) { 3982 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 3983 __func__); 3984 return EINVAL; 3985 } 3986 3987 if ((error = wpi_set_timing(sc, ni)) != 0) { 3988 device_printf(sc->sc_dev, 3989 "%s: could not set timing, error %d\n", __func__, error); 3990 return error; 3991 } 3992 3993 /* Update adapter configuration. */ 3994 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 3995 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 3996 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 3997 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3998 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 3999 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4000 /* Short preamble and slot time are negotiated when associating. */ 4001 sc->rxon.flags &= ~htole32(WPI_RXON_SHPREAMBLE | WPI_RXON_SHSLOT); 4002 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4003 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4004 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4005 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4006 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 4007 sc->rxon.cck_mask = 0; 4008 sc->rxon.ofdm_mask = 0x15; 4009 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 4010 sc->rxon.cck_mask = 0x03; 4011 sc->rxon.ofdm_mask = 0; 4012 } else { 4013 /* Assume 802.11b/g. */ 4014 sc->rxon.cck_mask = 0x0f; 4015 sc->rxon.ofdm_mask = 0x15; 4016 } 4017 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 4018 4019 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 4020 4021 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 4022 sc->rxon.chan, sc->rxon.flags); 4023 4024 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4025 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4026 __func__); 4027 return error; 4028 } 4029 4030 if (vap->iv_opmode == IEEE80211_M_IBSS) { 4031 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 4032 device_printf(sc->sc_dev, 4033 "%s: could not setup beacon, error %d\n", __func__, 4034 error); 4035 return error; 4036 } 4037 } 4038 4039 if (vap->iv_opmode == IEEE80211_M_STA) { 4040 /* Add BSS node. */ 4041 error = wpi_add_sta_node(sc, ni); 4042 if (error != 0) { 4043 device_printf(sc->sc_dev, 4044 "%s: could not add BSS node, error %d\n", __func__, 4045 error); 4046 return error; 4047 } 4048 } 4049 4050 /* Link LED always on while associated. */ 4051 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4052 4053 /* Start periodic calibration timer. */ 4054 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 4055 4056 /* Enable power-saving mode if requested by user. */ 4057 if (vap->iv_flags & IEEE80211_F_PMGTON) 4058 (void)wpi_set_pslevel(sc, 0, 3, 1); 4059 else 4060 (void)wpi_set_pslevel(sc, 0, 0, 1); 4061 4062 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4063 4064 return 0; 4065} 4066 4067static int 4068wpi_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k, 4069 ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix) 4070{ 4071 struct wpi_softc *sc = vap->iv_ic->ic_ifp->if_softc; 4072 4073 if (!(&vap->iv_nw_keys[0] <= k && 4074 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID])) { 4075 if (k->wk_flags & IEEE80211_KEY_GROUP) { 4076 /* should not happen */ 4077 DPRINTF(sc, WPI_DEBUG_KEY, "%s: bogus group key\n", 4078 __func__); 4079 return 0; 4080 } 4081 *keyix = 0; /* NB: use key index 0 for ucast key */ 4082 } else { 4083 *keyix = *rxkeyix = k - vap->iv_nw_keys; 4084 4085 if (k->wk_cipher->ic_cipher == IEEE80211_CIPHER_AES_CCM) 4086 k->wk_flags |= IEEE80211_KEY_SWCRYPT; 4087 } 4088 return 1; 4089} 4090 4091static int 4092wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k, 4093 const uint8_t mac[IEEE80211_ADDR_LEN]) 4094{ 4095 const struct ieee80211_cipher *cip = k->wk_cipher; 4096 struct ieee80211com *ic = vap->iv_ic; 4097 struct ieee80211_node *ni = vap->iv_bss; 4098 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4099 struct wpi_node *wn = WPI_NODE(ni); 4100 struct wpi_node_info node; 4101 uint16_t kflags; 4102 int error; 4103 4104 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4105 4106 switch (cip->ic_cipher) { 4107 case IEEE80211_CIPHER_AES_CCM: 4108 if (k->wk_flags & IEEE80211_KEY_GROUP) 4109 return 1; 4110 4111 kflags = WPI_KFLAG_CCMP; 4112 break; 4113 default: 4114 /* null_key_set() */ 4115 return 1; 4116 } 4117 4118 if (wn->id == WPI_ID_UNDEFINED) 4119 return 0; 4120 4121 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4122 if (k->wk_flags & IEEE80211_KEY_GROUP) 4123 kflags |= WPI_KFLAG_MULTICAST; 4124 4125 memset(&node, 0, sizeof node); 4126 node.id = wn->id; 4127 node.control = WPI_NODE_UPDATE; 4128 node.flags = WPI_FLAG_KEY_SET; 4129 node.kflags = htole16(kflags); 4130 memcpy(node.key, k->wk_key, k->wk_keylen); 4131 4132 DPRINTF(sc, WPI_DEBUG_KEY, "set key id=%d for node %d\n", k->wk_keyix, 4133 node.id); 4134 4135 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4136 if (error != 0) { 4137 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4138 error); 4139 return 0; 4140 } 4141 4142 return 1; 4143} 4144 4145static int 4146wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4147{ 4148 const struct ieee80211_cipher *cip = k->wk_cipher; 4149 struct ieee80211com *ic = vap->iv_ic; 4150 struct ieee80211_node *ni = vap->iv_bss; 4151 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4152 struct wpi_node *wn = WPI_NODE(ni); 4153 struct wpi_node_info node; 4154 4155 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4156 4157 switch (cip->ic_cipher) { 4158 case IEEE80211_CIPHER_AES_CCM: 4159 break; 4160 default: 4161 /* null_key_delete() */ 4162 return 1; 4163 } 4164 4165 if (vap->iv_state != IEEE80211_S_RUN || 4166 (k->wk_flags & IEEE80211_KEY_GROUP)) 4167 return 1; /* Nothing to do. */ 4168 4169 memset(&node, 0, sizeof node); 4170 node.id = wn->id; 4171 node.control = WPI_NODE_UPDATE; 4172 node.flags = WPI_FLAG_KEY_SET; 4173 4174 DPRINTF(sc, WPI_DEBUG_KEY, "delete keys for node %d\n", node.id); 4175 (void)wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4176 4177 return 1; 4178} 4179 4180/* 4181 * This function is called after the runtime firmware notifies us of its 4182 * readiness (called in a process context). 4183 */ 4184static int 4185wpi_post_alive(struct wpi_softc *sc) 4186{ 4187 int ntries, error; 4188 4189 /* Check (again) that the radio is not disabled. */ 4190 if ((error = wpi_nic_lock(sc)) != 0) 4191 return error; 4192 4193 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4194 4195 /* NB: Runtime firmware must be up and running. */ 4196 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4197 device_printf(sc->sc_dev, 4198 "RF switch: radio disabled (%s)\n", __func__); 4199 wpi_nic_unlock(sc); 4200 return EPERM; /* :-) */ 4201 } 4202 wpi_nic_unlock(sc); 4203 4204 /* Wait for thermal sensor to calibrate. */ 4205 for (ntries = 0; ntries < 1000; ntries++) { 4206 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4207 break; 4208 DELAY(10); 4209 } 4210 4211 if (ntries == 1000) { 4212 device_printf(sc->sc_dev, 4213 "timeout waiting for thermal sensor calibration\n"); 4214 return ETIMEDOUT; 4215 } 4216 4217 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4218 return 0; 4219} 4220 4221/* 4222 * The firmware boot code is small and is intended to be copied directly into 4223 * the NIC internal memory (no DMA transfer). 4224 */ 4225static int 4226wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 4227{ 4228 int error, ntries; 4229 4230 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4231 4232 size /= sizeof (uint32_t); 4233 4234 if ((error = wpi_nic_lock(sc)) != 0) 4235 return error; 4236 4237 /* Copy microcode image into NIC memory. */ 4238 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4239 (const uint32_t *)ucode, size); 4240 4241 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4242 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4243 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4244 4245 /* Start boot load now. */ 4246 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4247 4248 /* Wait for transfer to complete. */ 4249 for (ntries = 0; ntries < 1000; ntries++) { 4250 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4251 DPRINTF(sc, WPI_DEBUG_HW, 4252 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4253 WPI_FH_TX_STATUS_IDLE(6), 4254 status & WPI_FH_TX_STATUS_IDLE(6)); 4255 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4256 DPRINTF(sc, WPI_DEBUG_HW, 4257 "Status Match! - ntries = %d\n", ntries); 4258 break; 4259 } 4260 DELAY(10); 4261 } 4262 if (ntries == 1000) { 4263 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4264 __func__); 4265 wpi_nic_unlock(sc); 4266 return ETIMEDOUT; 4267 } 4268 4269 /* Enable boot after power up. */ 4270 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4271 4272 wpi_nic_unlock(sc); 4273 return 0; 4274} 4275 4276static int 4277wpi_load_firmware(struct wpi_softc *sc) 4278{ 4279 struct wpi_fw_info *fw = &sc->fw; 4280 struct wpi_dma_info *dma = &sc->fw_dma; 4281 int error; 4282 4283 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4284 4285 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4286 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4287 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4288 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4289 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4290 4291 /* Tell adapter where to find initialization sections. */ 4292 if ((error = wpi_nic_lock(sc)) != 0) 4293 return error; 4294 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4295 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4296 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4297 dma->paddr + WPI_FW_DATA_MAXSZ); 4298 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4299 wpi_nic_unlock(sc); 4300 4301 /* Load firmware boot code. */ 4302 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4303 if (error != 0) { 4304 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4305 __func__); 4306 return error; 4307 } 4308 4309 /* Now press "execute". */ 4310 WPI_WRITE(sc, WPI_RESET, 0); 4311 4312 /* Wait at most one second for first alive notification. */ 4313 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4314 device_printf(sc->sc_dev, 4315 "%s: timeout waiting for adapter to initialize, error %d\n", 4316 __func__, error); 4317 return error; 4318 } 4319 4320 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4321 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4322 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4323 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4324 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4325 4326 /* Tell adapter where to find runtime sections. */ 4327 if ((error = wpi_nic_lock(sc)) != 0) 4328 return error; 4329 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4330 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 4331 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4332 dma->paddr + WPI_FW_DATA_MAXSZ); 4333 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 4334 WPI_FW_UPDATED | fw->main.textsz); 4335 wpi_nic_unlock(sc); 4336 4337 return 0; 4338} 4339 4340static int 4341wpi_read_firmware(struct wpi_softc *sc) 4342{ 4343 const struct firmware *fp; 4344 struct wpi_fw_info *fw = &sc->fw; 4345 const struct wpi_firmware_hdr *hdr; 4346 int error; 4347 4348 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4349 4350 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4351 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 4352 4353 WPI_UNLOCK(sc); 4354 fp = firmware_get(WPI_FW_NAME); 4355 WPI_LOCK(sc); 4356 4357 if (fp == NULL) { 4358 device_printf(sc->sc_dev, 4359 "could not load firmware image '%s'\n", WPI_FW_NAME); 4360 return EINVAL; 4361 } 4362 4363 sc->fw_fp = fp; 4364 4365 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 4366 device_printf(sc->sc_dev, 4367 "firmware file too short: %zu bytes\n", fp->datasize); 4368 error = EINVAL; 4369 goto fail; 4370 } 4371 4372 fw->size = fp->datasize; 4373 fw->data = (const uint8_t *)fp->data; 4374 4375 /* Extract firmware header information. */ 4376 hdr = (const struct wpi_firmware_hdr *)fw->data; 4377 4378 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 4379 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 4380 4381 fw->main.textsz = le32toh(hdr->rtextsz); 4382 fw->main.datasz = le32toh(hdr->rdatasz); 4383 fw->init.textsz = le32toh(hdr->itextsz); 4384 fw->init.datasz = le32toh(hdr->idatasz); 4385 fw->boot.textsz = le32toh(hdr->btextsz); 4386 fw->boot.datasz = 0; 4387 4388 /* Sanity-check firmware header. */ 4389 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 4390 fw->main.datasz > WPI_FW_DATA_MAXSZ || 4391 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 4392 fw->init.datasz > WPI_FW_DATA_MAXSZ || 4393 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 4394 (fw->boot.textsz & 3) != 0) { 4395 device_printf(sc->sc_dev, "invalid firmware header\n"); 4396 error = EINVAL; 4397 goto fail; 4398 } 4399 4400 /* Check that all firmware sections fit. */ 4401 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 4402 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 4403 device_printf(sc->sc_dev, 4404 "firmware file too short: %zu bytes\n", fw->size); 4405 error = EINVAL; 4406 goto fail; 4407 } 4408 4409 /* Get pointers to firmware sections. */ 4410 fw->main.text = (const uint8_t *)(hdr + 1); 4411 fw->main.data = fw->main.text + fw->main.textsz; 4412 fw->init.text = fw->main.data + fw->main.datasz; 4413 fw->init.data = fw->init.text + fw->init.textsz; 4414 fw->boot.text = fw->init.data + fw->init.datasz; 4415 4416 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4417 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 4418 "runtime (text: %u, data: %u) init (text: %u, data %u) " 4419 "boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver), 4420 fw->main.textsz, fw->main.datasz, 4421 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 4422 4423 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 4424 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 4425 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 4426 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 4427 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 4428 4429 return 0; 4430 4431fail: wpi_unload_firmware(sc); 4432 return error; 4433} 4434 4435/** 4436 * Free the referenced firmware image 4437 */ 4438static void 4439wpi_unload_firmware(struct wpi_softc *sc) 4440{ 4441 if (sc->fw_fp != NULL) { 4442 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 4443 sc->fw_fp = NULL; 4444 } 4445} 4446 4447static int 4448wpi_clock_wait(struct wpi_softc *sc) 4449{ 4450 int ntries; 4451 4452 /* Set "initialization complete" bit. */ 4453 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4454 4455 /* Wait for clock stabilization. */ 4456 for (ntries = 0; ntries < 2500; ntries++) { 4457 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 4458 return 0; 4459 DELAY(100); 4460 } 4461 device_printf(sc->sc_dev, 4462 "%s: timeout waiting for clock stabilization\n", __func__); 4463 4464 return ETIMEDOUT; 4465} 4466 4467static int 4468wpi_apm_init(struct wpi_softc *sc) 4469{ 4470 uint32_t reg; 4471 int error; 4472 4473 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4474 4475 /* Disable L0s exit timer (NMI bug workaround). */ 4476 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 4477 /* Don't wait for ICH L0s (ICH bug workaround). */ 4478 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 4479 4480 /* Set FH wait threshold to max (HW bug under stress workaround). */ 4481 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 4482 4483 /* Retrieve PCIe Active State Power Management (ASPM). */ 4484 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 4485 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 4486 if (reg & 0x02) /* L1 Entry enabled. */ 4487 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4488 else 4489 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4490 4491 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 4492 4493 /* Wait for clock stabilization before accessing prph. */ 4494 if ((error = wpi_clock_wait(sc)) != 0) 4495 return error; 4496 4497 if ((error = wpi_nic_lock(sc)) != 0) 4498 return error; 4499 /* Enable DMA and BSM (Bootstrap State Machine). */ 4500 wpi_prph_write(sc, WPI_APMG_CLK_EN, 4501 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 4502 DELAY(20); 4503 /* Disable L1-Active. */ 4504 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 4505 /* ??? */ 4506 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000E00); 4507 wpi_nic_unlock(sc); 4508 4509 return 0; 4510} 4511 4512static void 4513wpi_apm_stop_master(struct wpi_softc *sc) 4514{ 4515 int ntries; 4516 4517 /* Stop busmaster DMA activity. */ 4518 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 4519 4520 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 4521 WPI_GP_CNTRL_MAC_PS) 4522 return; /* Already asleep. */ 4523 4524 for (ntries = 0; ntries < 100; ntries++) { 4525 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 4526 return; 4527 DELAY(10); 4528 } 4529 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", 4530 __func__); 4531} 4532 4533static void 4534wpi_apm_stop(struct wpi_softc *sc) 4535{ 4536 wpi_apm_stop_master(sc); 4537 4538 /* Reset the entire device. */ 4539 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 4540 DELAY(10); 4541 /* Clear "initialization complete" bit. */ 4542 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4543} 4544 4545static void 4546wpi_nic_config(struct wpi_softc *sc) 4547{ 4548 uint32_t rev; 4549 4550 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4551 4552 /* voodoo from the Linux "driver".. */ 4553 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 4554 if ((rev & 0xc0) == 0x40) 4555 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 4556 else if (!(rev & 0x80)) 4557 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 4558 4559 if (sc->cap == 0x80) 4560 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 4561 4562 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 4563 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4564 else 4565 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4566 4567 if (sc->type > 1) 4568 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 4569} 4570 4571static int 4572wpi_hw_init(struct wpi_softc *sc) 4573{ 4574 int chnl, ntries, error; 4575 4576 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4577 4578 /* Clear pending interrupts. */ 4579 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4580 4581 if ((error = wpi_apm_init(sc)) != 0) { 4582 device_printf(sc->sc_dev, 4583 "%s: could not power ON adapter, error %d\n", __func__, 4584 error); 4585 return error; 4586 } 4587 4588 /* Select VMAIN power source. */ 4589 if ((error = wpi_nic_lock(sc)) != 0) 4590 return error; 4591 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 4592 wpi_nic_unlock(sc); 4593 /* Spin until VMAIN gets selected. */ 4594 for (ntries = 0; ntries < 5000; ntries++) { 4595 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 4596 break; 4597 DELAY(10); 4598 } 4599 if (ntries == 5000) { 4600 device_printf(sc->sc_dev, "timeout selecting power source\n"); 4601 return ETIMEDOUT; 4602 } 4603 4604 /* Perform adapter initialization. */ 4605 wpi_nic_config(sc); 4606 4607 /* Initialize RX ring. */ 4608 if ((error = wpi_nic_lock(sc)) != 0) 4609 return error; 4610 /* Set physical address of RX ring. */ 4611 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 4612 /* Set physical address of RX read pointer. */ 4613 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 4614 offsetof(struct wpi_shared, next)); 4615 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 4616 /* Enable RX. */ 4617 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 4618 WPI_FH_RX_CONFIG_DMA_ENA | 4619 WPI_FH_RX_CONFIG_RDRBD_ENA | 4620 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 4621 WPI_FH_RX_CONFIG_MAXFRAG | 4622 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 4623 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 4624 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 4625 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 4626 wpi_nic_unlock(sc); 4627 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 4628 4629 /* Initialize TX rings. */ 4630 if ((error = wpi_nic_lock(sc)) != 0) 4631 return error; 4632 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 4633 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 4634 /* Enable all 6 TX rings. */ 4635 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 4636 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 4637 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 4638 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 4639 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 4640 /* Set physical address of TX rings. */ 4641 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 4642 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 4643 4644 /* Enable all DMA channels. */ 4645 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 4646 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 4647 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 4648 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 4649 } 4650 wpi_nic_unlock(sc); 4651 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 4652 4653 /* Clear "radio off" and "commands blocked" bits. */ 4654 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4655 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 4656 4657 /* Clear pending interrupts. */ 4658 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4659 /* Enable interrupts. */ 4660 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 4661 4662 /* _Really_ make sure "radio off" bit is cleared! */ 4663 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4664 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4665 4666 if ((error = wpi_load_firmware(sc)) != 0) { 4667 device_printf(sc->sc_dev, 4668 "%s: could not load firmware, error %d\n", __func__, 4669 error); 4670 return error; 4671 } 4672 /* Wait at most one second for firmware alive notification. */ 4673 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4674 device_printf(sc->sc_dev, 4675 "%s: timeout waiting for adapter to initialize, error %d\n", 4676 __func__, error); 4677 return error; 4678 } 4679 4680 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4681 4682 /* Do post-firmware initialization. */ 4683 return wpi_post_alive(sc); 4684} 4685 4686static void 4687wpi_hw_stop(struct wpi_softc *sc) 4688{ 4689 int chnl, qid, ntries; 4690 4691 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4692 4693 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 4694 wpi_nic_lock(sc); 4695 4696 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 4697 4698 /* Disable interrupts. */ 4699 WPI_WRITE(sc, WPI_INT_MASK, 0); 4700 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4701 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 4702 4703 /* Make sure we no longer hold the NIC lock. */ 4704 wpi_nic_unlock(sc); 4705 4706 if (wpi_nic_lock(sc) == 0) { 4707 /* Stop TX scheduler. */ 4708 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 4709 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 4710 4711 /* Stop all DMA channels. */ 4712 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 4713 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 4714 for (ntries = 0; ntries < 200; ntries++) { 4715 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 4716 WPI_FH_TX_STATUS_IDLE(chnl)) 4717 break; 4718 DELAY(10); 4719 } 4720 } 4721 wpi_nic_unlock(sc); 4722 } 4723 4724 /* Stop RX ring. */ 4725 wpi_reset_rx_ring(sc); 4726 4727 /* Reset all TX rings. */ 4728 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 4729 wpi_reset_tx_ring(sc, &sc->txq[qid]); 4730 4731 if (wpi_nic_lock(sc) == 0) { 4732 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 4733 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 4734 wpi_nic_unlock(sc); 4735 } 4736 DELAY(5); 4737 /* Power OFF adapter. */ 4738 wpi_apm_stop(sc); 4739} 4740 4741static void 4742wpi_radio_on(void *arg0, int pending) 4743{ 4744 struct wpi_softc *sc = arg0; 4745 struct ifnet *ifp = sc->sc_ifp; 4746 struct ieee80211com *ic = ifp->if_l2com; 4747 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4748 4749 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 4750 4751 if (vap != NULL) { 4752 wpi_init(sc); 4753 ieee80211_init(vap); 4754 } 4755 4756 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) { 4757 WPI_LOCK(sc); 4758 callout_stop(&sc->watchdog_rfkill); 4759 WPI_UNLOCK(sc); 4760 } 4761} 4762 4763static void 4764wpi_radio_off(void *arg0, int pending) 4765{ 4766 struct wpi_softc *sc = arg0; 4767 struct ifnet *ifp = sc->sc_ifp; 4768 struct ieee80211com *ic = ifp->if_l2com; 4769 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4770 4771 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 4772 4773 wpi_stop(sc); 4774 if (vap != NULL) 4775 ieee80211_stop(vap); 4776 4777 WPI_LOCK(sc); 4778 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 4779 WPI_UNLOCK(sc); 4780} 4781 4782static void 4783wpi_init_locked(struct wpi_softc *sc) 4784{ 4785 struct ifnet *ifp = sc->sc_ifp; 4786 int error; 4787 4788 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4789 4790 WPI_LOCK_ASSERT(sc); 4791 4792 /* Check that the radio is not disabled by hardware switch. */ 4793 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 4794 device_printf(sc->sc_dev, 4795 "RF switch: radio disabled (%s)\n", __func__); 4796 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 4797 sc); 4798 return; 4799 } 4800 4801 /* Read firmware images from the filesystem. */ 4802 if ((error = wpi_read_firmware(sc)) != 0) { 4803 device_printf(sc->sc_dev, 4804 "%s: could not read firmware, error %d\n", __func__, 4805 error); 4806 goto fail; 4807 } 4808 4809 /* Initialize hardware and upload firmware. */ 4810 error = wpi_hw_init(sc); 4811 wpi_unload_firmware(sc); 4812 if (error != 0) { 4813 device_printf(sc->sc_dev, 4814 "%s: could not initialize hardware, error %d\n", __func__, 4815 error); 4816 goto fail; 4817 } 4818 4819 /* Configure adapter now that it is ready. */ 4820 if ((error = wpi_config(sc)) != 0) { 4821 device_printf(sc->sc_dev, 4822 "%s: could not configure device, error %d\n", __func__, 4823 error); 4824 goto fail; 4825 } 4826 4827 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 4828 ifp->if_drv_flags |= IFF_DRV_RUNNING; 4829 4830 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 4831 4832 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4833 4834 return; 4835 4836fail: wpi_stop_locked(sc); 4837 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4838} 4839 4840static void 4841wpi_init(void *arg) 4842{ 4843 struct wpi_softc *sc = arg; 4844 struct ifnet *ifp = sc->sc_ifp; 4845 struct ieee80211com *ic = ifp->if_l2com; 4846 4847 WPI_LOCK(sc); 4848 wpi_init_locked(sc); 4849 WPI_UNLOCK(sc); 4850 4851 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 4852 ieee80211_start_all(ic); 4853} 4854 4855static void 4856wpi_stop_locked(struct wpi_softc *sc) 4857{ 4858 struct ifnet *ifp = sc->sc_ifp; 4859 4860 WPI_LOCK_ASSERT(sc); 4861 4862 sc->sc_scan_timer = 0; 4863 sc->sc_tx_timer = 0; 4864 callout_stop(&sc->watchdog_to); 4865 callout_stop(&sc->calib_to); 4866 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 4867 4868 /* Power OFF hardware. */ 4869 wpi_hw_stop(sc); 4870} 4871 4872static void 4873wpi_stop(struct wpi_softc *sc) 4874{ 4875 WPI_LOCK(sc); 4876 wpi_stop_locked(sc); 4877 WPI_UNLOCK(sc); 4878} 4879 4880/* 4881 * Callback from net80211 to start a scan. 4882 */ 4883static void 4884wpi_scan_start(struct ieee80211com *ic) 4885{ 4886 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4887 4888 WPI_LOCK(sc); 4889 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 4890 WPI_UNLOCK(sc); 4891} 4892 4893/* 4894 * Callback from net80211 to terminate a scan. 4895 */ 4896static void 4897wpi_scan_end(struct ieee80211com *ic) 4898{ 4899 struct ifnet *ifp = ic->ic_ifp; 4900 struct wpi_softc *sc = ifp->if_softc; 4901 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4902 4903 if (vap->iv_state == IEEE80211_S_RUN) { 4904 WPI_LOCK(sc); 4905 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4906 WPI_UNLOCK(sc); 4907 } 4908} 4909 4910/** 4911 * Called by the net80211 framework to indicate to the driver 4912 * that the channel should be changed 4913 */ 4914static void 4915wpi_set_channel(struct ieee80211com *ic) 4916{ 4917 const struct ieee80211_channel *c = ic->ic_curchan; 4918 struct ifnet *ifp = ic->ic_ifp; 4919 struct wpi_softc *sc = ifp->if_softc; 4920 int error; 4921 4922 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4923 4924 WPI_LOCK(sc); 4925 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 4926 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 4927 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 4928 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 4929 4930 /* 4931 * Only need to set the channel in Monitor mode. AP scanning and auth 4932 * are already taken care of by their respective firmware commands. 4933 */ 4934 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 4935 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4936 if (IEEE80211_IS_CHAN_2GHZ(c)) { 4937 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 4938 WPI_RXON_24GHZ); 4939 } else { 4940 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 4941 WPI_RXON_24GHZ); 4942 } 4943 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) 4944 device_printf(sc->sc_dev, 4945 "%s: error %d settting channel\n", __func__, 4946 error); 4947 } 4948 WPI_UNLOCK(sc); 4949} 4950 4951/** 4952 * Called by net80211 to indicate that we need to scan the current 4953 * channel. The channel is previously be set via the wpi_set_channel 4954 * callback. 4955 */ 4956static void 4957wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 4958{ 4959 struct ieee80211vap *vap = ss->ss_vap; 4960 struct ieee80211com *ic = vap->iv_ic; 4961 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4962 int error; 4963 4964 if (sc->rxon.chan != ieee80211_chan2ieee(ic, ic->ic_curchan)) { 4965 WPI_LOCK(sc); 4966 error = wpi_scan(sc, ic->ic_curchan); 4967 WPI_UNLOCK(sc); 4968 if (error != 0) 4969 ieee80211_cancel_scan(vap); 4970 } else { 4971 /* Send probe request when associated. */ 4972 sc->sc_scan_curchan(ss, maxdwell); 4973 } 4974} 4975 4976/** 4977 * Called by the net80211 framework to indicate 4978 * the minimum dwell time has been met, terminate the scan. 4979 * We don't actually terminate the scan as the firmware will notify 4980 * us when it's finished and we have no way to interrupt it. 4981 */ 4982static void 4983wpi_scan_mindwell(struct ieee80211_scan_state *ss) 4984{ 4985 /* NB: don't try to abort scan; wait for firmware to finish */ 4986} 4987 4988static void 4989wpi_hw_reset(void *arg, int pending) 4990{ 4991 struct wpi_softc *sc = arg; 4992 struct ifnet *ifp = sc->sc_ifp; 4993 struct ieee80211com *ic = ifp->if_l2com; 4994 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4995 4996 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4997 4998 wpi_stop(sc); 4999 if (vap != NULL) 5000 ieee80211_stop(vap); 5001 wpi_init(sc); 5002 if (vap != NULL) 5003 ieee80211_init(vap); 5004} 5005