1 /*- 2 * Copyright (c) 2006,2007 3 * Damien Bergamini <damien.bergamini@free.fr> 4 * Benjamin Close <Benjamin.Close@clearchain.com> 5 * Copyright (c) 2015 Andriy Voskoboinyk <avos@FreeBSD.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __FBSDID("$FreeBSD$"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 * 26 * The 3945ABG network adapter doesn't use traditional hardware as 27 * many other adaptors do. Instead at run time the eeprom is set into a known 28 * state and told to load boot firmware. The boot firmware loads an init and a 29 * main binary firmware image into SRAM on the card via DMA. 30 * Once the firmware is loaded, the driver/hw then 31 * communicate by way of circular dma rings via the SRAM to the firmware. 32 * 33 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 34 * The 4 tx data rings allow for prioritization QoS. 35 * 36 * The rx data ring consists of 32 dma buffers. Two registers are used to 37 * indicate where in the ring the driver and the firmware are up to. The 38 * driver sets the initial read index (reg1) and the initial write index (reg2), 39 * the firmware updates the read index (reg1) on rx of a packet and fires an 40 * interrupt. The driver then processes the buffers starting at reg1 indicating 41 * to the firmware which buffers have been accessed by updating reg2. At the 42 * same time allocating new memory for the processed buffer. 43 * 44 * A similar thing happens with the tx rings. The difference is the firmware 45 * stop processing buffers once the queue is full and until confirmation 46 * of a successful transmition (tx_done) has occurred. 47 * 48 * The command ring operates in the same manner as the tx queues. 49 * 50 * All communication direct to the card (ie eeprom) is classed as Stage1 51 * communication 52 * 53 * All communication via the firmware to the card is classed as State2. 54 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 55 * firmware. The bootstrap firmware and runtime firmware are loaded 56 * from host memory via dma to the card then told to execute. From this point 57 * on the majority of communications between the driver and the card goes 58 * via the firmware. 59 */ 60 61 #include "opt_wlan.h" 62 #include "opt_wpi.h" 63 64 #include <sys/param.h> 65 #include <sys/sysctl.h> 66 #include <sys/sockio.h> 67 #include <sys/mbuf.h> 68 #include <sys/kernel.h> 69 #include <sys/socket.h> 70 #include <sys/systm.h> 71 #include <sys/malloc.h> 72 #include <sys/queue.h> 73 #include <sys/taskqueue.h> 74 #include <sys/module.h> 75 #include <sys/bus.h> 76 #include <sys/endian.h> 77 #include <sys/linker.h> 78 #include <sys/firmware.h> 79 80 #include <machine/bus.h> 81 #include <machine/resource.h> 82 #include <sys/rman.h> 83 84 #include <dev/pci/pcireg.h> 85 #include <dev/pci/pcivar.h> 86 87 #include <net/bpf.h> 88 #include <net/if.h> 89 #include <net/if_var.h> 90 #include <net/if_arp.h> 91 #include <net/ethernet.h> 92 #include <net/if_dl.h> 93 #include <net/if_media.h> 94 #include <net/if_types.h> 95 96 #include <netinet/in.h> 97 #include <netinet/in_systm.h> 98 #include <netinet/in_var.h> 99 #include <netinet/if_ether.h> 100 #include <netinet/ip.h> 101 102 #include <net80211/ieee80211_var.h> 103 #include <net80211/ieee80211_radiotap.h> 104 #include <net80211/ieee80211_regdomain.h> 105 #include <net80211/ieee80211_ratectl.h> 106 107 #include <dev/wpi/if_wpireg.h> 108 #include <dev/wpi/if_wpivar.h> 109 #include <dev/wpi/if_wpi_debug.h> 110 111 struct wpi_ident { 112 uint16_t vendor; 113 uint16_t device; 114 uint16_t subdevice; 115 const char *name; 116 }; 117 118 static const struct wpi_ident wpi_ident_table[] = { 119 /* The below entries support ABG regardless of the subid */ 120 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 121 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 122 /* The below entries only support BG */ 123 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 124 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 125 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 126 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 127 { 0, 0, 0, NULL } 128 }; 129 130 static int wpi_probe(device_t); 131 static int wpi_attach(device_t); 132 static void wpi_radiotap_attach(struct wpi_softc *); 133 static void wpi_sysctlattach(struct wpi_softc *); 134 static void wpi_init_beacon(struct wpi_vap *); 135 static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 136 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 137 const uint8_t [IEEE80211_ADDR_LEN], 138 const uint8_t [IEEE80211_ADDR_LEN]); 139 static void wpi_vap_delete(struct ieee80211vap *); 140 static int wpi_detach(device_t); 141 static int wpi_shutdown(device_t); 142 static int wpi_suspend(device_t); 143 static int wpi_resume(device_t); 144 static int wpi_nic_lock(struct wpi_softc *); 145 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 146 static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 147 static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 148 void **, bus_size_t, bus_size_t); 149 static void wpi_dma_contig_free(struct wpi_dma_info *); 150 static int wpi_alloc_shared(struct wpi_softc *); 151 static void wpi_free_shared(struct wpi_softc *); 152 static int wpi_alloc_fwmem(struct wpi_softc *); 153 static void wpi_free_fwmem(struct wpi_softc *); 154 static int wpi_alloc_rx_ring(struct wpi_softc *); 155 static void wpi_update_rx_ring(struct wpi_softc *); 156 static void wpi_update_rx_ring_ps(struct wpi_softc *); 157 static void wpi_reset_rx_ring(struct wpi_softc *); 158 static void wpi_free_rx_ring(struct wpi_softc *); 159 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 160 uint8_t); 161 static void wpi_update_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 162 static void wpi_update_tx_ring_ps(struct wpi_softc *, 163 struct wpi_tx_ring *); 164 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 165 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 166 static int wpi_read_eeprom(struct wpi_softc *, 167 uint8_t macaddr[IEEE80211_ADDR_LEN]); 168 static uint32_t wpi_eeprom_channel_flags(struct wpi_eeprom_chan *); 169 static void wpi_read_eeprom_band(struct wpi_softc *, uint8_t, int, int *, 170 struct ieee80211_channel[]); 171 static int wpi_read_eeprom_channels(struct wpi_softc *, uint8_t); 172 static struct wpi_eeprom_chan *wpi_find_eeprom_channel(struct wpi_softc *, 173 struct ieee80211_channel *); 174 static void wpi_getradiocaps(struct ieee80211com *, int, int *, 175 struct ieee80211_channel[]); 176 static int wpi_setregdomain(struct ieee80211com *, 177 struct ieee80211_regdomain *, int, 178 struct ieee80211_channel[]); 179 static int wpi_read_eeprom_group(struct wpi_softc *, uint8_t); 180 static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 181 const uint8_t mac[IEEE80211_ADDR_LEN]); 182 static void wpi_node_free(struct ieee80211_node *); 183 static void wpi_ibss_recv_mgmt(struct ieee80211_node *, struct mbuf *, int, 184 const struct ieee80211_rx_stats *, 185 int, int); 186 static void wpi_restore_node(void *, struct ieee80211_node *); 187 static void wpi_restore_node_table(struct wpi_softc *, struct wpi_vap *); 188 static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 189 static void wpi_calib_timeout(void *); 190 static void wpi_rx_done(struct wpi_softc *, struct wpi_rx_desc *, 191 struct wpi_rx_data *); 192 static void wpi_rx_statistics(struct wpi_softc *, struct wpi_rx_desc *, 193 struct wpi_rx_data *); 194 static void wpi_tx_done(struct wpi_softc *, struct wpi_rx_desc *); 195 static void wpi_cmd_done(struct wpi_softc *, struct wpi_rx_desc *); 196 static void wpi_notif_intr(struct wpi_softc *); 197 static void wpi_wakeup_intr(struct wpi_softc *); 198 #ifdef WPI_DEBUG 199 static void wpi_debug_registers(struct wpi_softc *); 200 #endif 201 static void wpi_fatal_intr(struct wpi_softc *); 202 static void wpi_intr(void *); 203 static void wpi_free_txfrags(struct wpi_softc *, uint16_t); 204 static int wpi_cmd2(struct wpi_softc *, struct wpi_buf *); 205 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 206 struct ieee80211_node *); 207 static int wpi_tx_data_raw(struct wpi_softc *, struct mbuf *, 208 struct ieee80211_node *, 209 const struct ieee80211_bpf_params *); 210 static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 211 const struct ieee80211_bpf_params *); 212 static int wpi_transmit(struct ieee80211com *, struct mbuf *); 213 static void wpi_watchdog_rfkill(void *); 214 static void wpi_scan_timeout(void *); 215 static void wpi_tx_timeout(void *); 216 static void wpi_parent(struct ieee80211com *); 217 static int wpi_cmd(struct wpi_softc *, uint8_t, const void *, uint16_t, 218 int); 219 static int wpi_mrr_setup(struct wpi_softc *); 220 static int wpi_add_node(struct wpi_softc *, struct ieee80211_node *); 221 static int wpi_add_broadcast_node(struct wpi_softc *, int); 222 static int wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *); 223 static void wpi_del_node(struct wpi_softc *, struct ieee80211_node *); 224 static int wpi_updateedca(struct ieee80211com *); 225 static void wpi_set_promisc(struct wpi_softc *); 226 static void wpi_update_promisc(struct ieee80211com *); 227 static void wpi_update_mcast(struct ieee80211com *); 228 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 229 static int wpi_set_timing(struct wpi_softc *, struct ieee80211_node *); 230 static void wpi_power_calibration(struct wpi_softc *); 231 static int wpi_set_txpower(struct wpi_softc *, int); 232 static int wpi_get_power_index(struct wpi_softc *, 233 struct wpi_power_group *, uint8_t, int, int); 234 static int wpi_set_pslevel(struct wpi_softc *, uint8_t, int, int); 235 static int wpi_send_btcoex(struct wpi_softc *); 236 static int wpi_send_rxon(struct wpi_softc *, int, int); 237 static int wpi_config(struct wpi_softc *); 238 static uint16_t wpi_get_active_dwell_time(struct wpi_softc *, 239 struct ieee80211_channel *, uint8_t); 240 static uint16_t wpi_limit_dwell(struct wpi_softc *, uint16_t); 241 static uint16_t wpi_get_passive_dwell_time(struct wpi_softc *, 242 struct ieee80211_channel *); 243 static uint32_t wpi_get_scan_pause_time(uint32_t, uint16_t); 244 static int wpi_scan(struct wpi_softc *, struct ieee80211_channel *); 245 static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 246 static int wpi_config_beacon(struct wpi_vap *); 247 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 248 static void wpi_update_beacon(struct ieee80211vap *, int); 249 static void wpi_newassoc(struct ieee80211_node *, int); 250 static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 251 static int wpi_load_key(struct ieee80211_node *, 252 const struct ieee80211_key *); 253 static void wpi_load_key_cb(void *, struct ieee80211_node *); 254 static int wpi_set_global_keys(struct ieee80211_node *); 255 static int wpi_del_key(struct ieee80211_node *, 256 const struct ieee80211_key *); 257 static void wpi_del_key_cb(void *, struct ieee80211_node *); 258 static int wpi_process_key(struct ieee80211vap *, 259 const struct ieee80211_key *, int); 260 static int wpi_key_set(struct ieee80211vap *, 261 const struct ieee80211_key *); 262 static int wpi_key_delete(struct ieee80211vap *, 263 const struct ieee80211_key *); 264 static int wpi_post_alive(struct wpi_softc *); 265 static int wpi_load_bootcode(struct wpi_softc *, const uint8_t *, 266 uint32_t); 267 static int wpi_load_firmware(struct wpi_softc *); 268 static int wpi_read_firmware(struct wpi_softc *); 269 static void wpi_unload_firmware(struct wpi_softc *); 270 static int wpi_clock_wait(struct wpi_softc *); 271 static int wpi_apm_init(struct wpi_softc *); 272 static void wpi_apm_stop_master(struct wpi_softc *); 273 static void wpi_apm_stop(struct wpi_softc *); 274 static void wpi_nic_config(struct wpi_softc *); 275 static int wpi_hw_init(struct wpi_softc *); 276 static void wpi_hw_stop(struct wpi_softc *); 277 static void wpi_radio_on(void *, int); 278 static void wpi_radio_off(void *, int); 279 static int wpi_init(struct wpi_softc *); 280 static void wpi_stop_locked(struct wpi_softc *); 281 static void wpi_stop(struct wpi_softc *); 282 static void wpi_scan_start(struct ieee80211com *); 283 static void wpi_scan_end(struct ieee80211com *); 284 static void wpi_set_channel(struct ieee80211com *); 285 static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 286 static void wpi_scan_mindwell(struct ieee80211_scan_state *); 287 288 static device_method_t wpi_methods[] = { 289 /* Device interface */ 290 DEVMETHOD(device_probe, wpi_probe), 291 DEVMETHOD(device_attach, wpi_attach), 292 DEVMETHOD(device_detach, wpi_detach), 293 DEVMETHOD(device_shutdown, wpi_shutdown), 294 DEVMETHOD(device_suspend, wpi_suspend), 295 DEVMETHOD(device_resume, wpi_resume), 296 297 DEVMETHOD_END 298 }; 299 300 static driver_t wpi_driver = { 301 "wpi", 302 wpi_methods, 303 sizeof (struct wpi_softc) 304 }; 305 static devclass_t wpi_devclass; 306 307 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 308 309 MODULE_VERSION(wpi, 1); 310 311 MODULE_DEPEND(wpi, pci, 1, 1, 1); 312 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 313 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 314 315 static int 316 wpi_probe(device_t dev) 317 { 318 const struct wpi_ident *ident; 319 320 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 321 if (pci_get_vendor(dev) == ident->vendor && 322 pci_get_device(dev) == ident->device) { 323 device_set_desc(dev, ident->name); 324 return (BUS_PROBE_DEFAULT); 325 } 326 } 327 return ENXIO; 328 } 329 330 static int 331 wpi_attach(device_t dev) 332 { 333 struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev); 334 struct ieee80211com *ic; 335 uint8_t i; 336 int error, rid; 337 #ifdef WPI_DEBUG 338 int supportsa = 1; 339 const struct wpi_ident *ident; 340 #endif 341 342 sc->sc_dev = dev; 343 344 #ifdef WPI_DEBUG 345 error = resource_int_value(device_get_name(sc->sc_dev), 346 device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug)); 347 if (error != 0) 348 sc->sc_debug = 0; 349 #else 350 sc->sc_debug = 0; 351 #endif 352 353 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 354 355 /* 356 * Get the offset of the PCI Express Capability Structure in PCI 357 * Configuration Space. 358 */ 359 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 360 if (error != 0) { 361 device_printf(dev, "PCIe capability structure not found!\n"); 362 return error; 363 } 364 365 /* 366 * Some card's only support 802.11b/g not a, check to see if 367 * this is one such card. A 0x0 in the subdevice table indicates 368 * the entire subdevice range is to be ignored. 369 */ 370 #ifdef WPI_DEBUG 371 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 372 if (ident->subdevice && 373 pci_get_subdevice(dev) == ident->subdevice) { 374 supportsa = 0; 375 break; 376 } 377 } 378 #endif 379 380 /* Clear device-specific "PCI retry timeout" register (41h). */ 381 pci_write_config(dev, 0x41, 0, 1); 382 383 /* Enable bus-mastering. */ 384 pci_enable_busmaster(dev); 385 386 rid = PCIR_BAR(0); 387 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 388 RF_ACTIVE); 389 if (sc->mem == NULL) { 390 device_printf(dev, "can't map mem space\n"); 391 return ENOMEM; 392 } 393 sc->sc_st = rman_get_bustag(sc->mem); 394 sc->sc_sh = rman_get_bushandle(sc->mem); 395 396 rid = 1; 397 if (pci_alloc_msi(dev, &rid) == 0) 398 rid = 1; 399 else 400 rid = 0; 401 /* Install interrupt handler. */ 402 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 403 (rid != 0 ? 0 : RF_SHAREABLE)); 404 if (sc->irq == NULL) { 405 device_printf(dev, "can't map interrupt\n"); 406 error = ENOMEM; 407 goto fail; 408 } 409 410 WPI_LOCK_INIT(sc); 411 WPI_TX_LOCK_INIT(sc); 412 WPI_RXON_LOCK_INIT(sc); 413 WPI_NT_LOCK_INIT(sc); 414 WPI_TXQ_LOCK_INIT(sc); 415 WPI_TXQ_STATE_LOCK_INIT(sc); 416 417 /* Allocate DMA memory for firmware transfers. */ 418 if ((error = wpi_alloc_fwmem(sc)) != 0) { 419 device_printf(dev, 420 "could not allocate memory for firmware, error %d\n", 421 error); 422 goto fail; 423 } 424 425 /* Allocate shared page. */ 426 if ((error = wpi_alloc_shared(sc)) != 0) { 427 device_printf(dev, "could not allocate shared page\n"); 428 goto fail; 429 } 430 431 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 432 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 433 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 434 device_printf(dev, 435 "could not allocate TX ring %d, error %d\n", i, 436 error); 437 goto fail; 438 } 439 } 440 441 /* Allocate RX ring. */ 442 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 443 device_printf(dev, "could not allocate RX ring, error %d\n", 444 error); 445 goto fail; 446 } 447 448 /* Clear pending interrupts. */ 449 WPI_WRITE(sc, WPI_INT, 0xffffffff); 450 451 ic = &sc->sc_ic; 452 ic->ic_softc = sc; 453 ic->ic_name = device_get_nameunit(dev); 454 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 455 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 456 457 /* Set device capabilities. */ 458 ic->ic_caps = 459 IEEE80211_C_STA /* station mode supported */ 460 | IEEE80211_C_IBSS /* IBSS mode supported */ 461 | IEEE80211_C_HOSTAP /* Host access point mode */ 462 | IEEE80211_C_MONITOR /* monitor mode supported */ 463 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 464 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 465 | IEEE80211_C_TXFRAG /* handle tx frags */ 466 | IEEE80211_C_TXPMGT /* tx power management */ 467 | IEEE80211_C_SHSLOT /* short slot time supported */ 468 | IEEE80211_C_WPA /* 802.11i */ 469 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 470 | IEEE80211_C_WME /* 802.11e */ 471 | IEEE80211_C_PMGT /* Station-side power mgmt */ 472 ; 473 474 ic->ic_cryptocaps = 475 IEEE80211_CRYPTO_AES_CCM; 476 477 /* 478 * Read in the eeprom and also setup the channels for 479 * net80211. We don't set the rates as net80211 does this for us 480 */ 481 if ((error = wpi_read_eeprom(sc, ic->ic_macaddr)) != 0) { 482 device_printf(dev, "could not read EEPROM, error %d\n", 483 error); 484 goto fail; 485 } 486 487 #ifdef WPI_DEBUG 488 if (bootverbose) { 489 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", 490 sc->domain); 491 device_printf(sc->sc_dev, "Hardware Type: %c\n", 492 sc->type > 1 ? 'B': '?'); 493 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 494 ((sc->rev & 0xf0) == 0xd0) ? 'D': '?'); 495 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 496 supportsa ? "does" : "does not"); 497 498 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must 499 check what sc->rev really represents - benjsc 20070615 */ 500 } 501 #endif 502 503 ieee80211_ifattach(ic); 504 ic->ic_vap_create = wpi_vap_create; 505 ic->ic_vap_delete = wpi_vap_delete; 506 ic->ic_parent = wpi_parent; 507 ic->ic_raw_xmit = wpi_raw_xmit; 508 ic->ic_transmit = wpi_transmit; 509 ic->ic_node_alloc = wpi_node_alloc; 510 sc->sc_node_free = ic->ic_node_free; 511 ic->ic_node_free = wpi_node_free; 512 ic->ic_wme.wme_update = wpi_updateedca; 513 ic->ic_update_promisc = wpi_update_promisc; 514 ic->ic_update_mcast = wpi_update_mcast; 515 ic->ic_newassoc = wpi_newassoc; 516 ic->ic_scan_start = wpi_scan_start; 517 ic->ic_scan_end = wpi_scan_end; 518 ic->ic_set_channel = wpi_set_channel; 519 ic->ic_scan_curchan = wpi_scan_curchan; 520 ic->ic_scan_mindwell = wpi_scan_mindwell; 521 ic->ic_getradiocaps = wpi_getradiocaps; 522 ic->ic_setregdomain = wpi_setregdomain; 523 524 sc->sc_update_rx_ring = wpi_update_rx_ring; 525 sc->sc_update_tx_ring = wpi_update_tx_ring; 526 527 wpi_radiotap_attach(sc); 528 529 /* Setup Tx status flags (constant). */ 530 sc->sc_txs.flags = IEEE80211_RATECTL_STATUS_PKTLEN | 531 IEEE80211_RATECTL_STATUS_SHORT_RETRY | 532 IEEE80211_RATECTL_STATUS_LONG_RETRY; 533 534 callout_init_mtx(&sc->calib_to, &sc->rxon_mtx, 0); 535 callout_init_mtx(&sc->scan_timeout, &sc->rxon_mtx, 0); 536 callout_init_mtx(&sc->tx_timeout, &sc->txq_state_mtx, 0); 537 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 538 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 539 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 540 541 wpi_sysctlattach(sc); 542 543 /* 544 * Hook our interrupt after all initialization is complete. 545 */ 546 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 547 NULL, wpi_intr, sc, &sc->sc_ih); 548 if (error != 0) { 549 device_printf(dev, "can't establish interrupt, error %d\n", 550 error); 551 goto fail; 552 } 553 554 if (bootverbose) 555 ieee80211_announce(ic); 556 557 #ifdef WPI_DEBUG 558 if (sc->sc_debug & WPI_DEBUG_HW) 559 ieee80211_announce_channels(ic); 560 #endif 561 562 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 563 return 0; 564 565 fail: wpi_detach(dev); 566 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 567 return error; 568 } 569 570 /* 571 * Attach the interface to 802.11 radiotap. 572 */ 573 static void 574 wpi_radiotap_attach(struct wpi_softc *sc) 575 { 576 struct wpi_rx_radiotap_header *rxtap = &sc->sc_rxtap; 577 struct wpi_tx_radiotap_header *txtap = &sc->sc_txtap; 578 579 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 580 ieee80211_radiotap_attach(&sc->sc_ic, 581 &txtap->wt_ihdr, sizeof(*txtap), WPI_TX_RADIOTAP_PRESENT, 582 &rxtap->wr_ihdr, sizeof(*rxtap), WPI_RX_RADIOTAP_PRESENT); 583 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 584 } 585 586 static void 587 wpi_sysctlattach(struct wpi_softc *sc) 588 { 589 #ifdef WPI_DEBUG 590 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 591 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 592 593 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 594 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 595 "control debugging printfs"); 596 #endif 597 } 598 599 static void 600 wpi_init_beacon(struct wpi_vap *wvp) 601 { 602 struct wpi_buf *bcn = &wvp->wv_bcbuf; 603 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 604 605 cmd->id = WPI_ID_BROADCAST; 606 cmd->ofdm_mask = 0xff; 607 cmd->cck_mask = 0x0f; 608 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 609 610 /* 611 * XXX WPI_TX_AUTO_SEQ seems to be ignored - workaround this issue 612 * XXX by using WPI_TX_NEED_ACK instead (with some side effects). 613 */ 614 cmd->flags = htole32(WPI_TX_NEED_ACK | WPI_TX_INSERT_TSTAMP); 615 616 bcn->code = WPI_CMD_SET_BEACON; 617 bcn->ac = WPI_CMD_QUEUE_NUM; 618 bcn->size = sizeof(struct wpi_cmd_beacon); 619 } 620 621 static struct ieee80211vap * 622 wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 623 enum ieee80211_opmode opmode, int flags, 624 const uint8_t bssid[IEEE80211_ADDR_LEN], 625 const uint8_t mac[IEEE80211_ADDR_LEN]) 626 { 627 struct wpi_vap *wvp; 628 struct ieee80211vap *vap; 629 630 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 631 return NULL; 632 633 wvp = malloc(sizeof(struct wpi_vap), M_80211_VAP, M_WAITOK | M_ZERO); 634 vap = &wvp->wv_vap; 635 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 636 637 if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) { 638 WPI_VAP_LOCK_INIT(wvp); 639 wpi_init_beacon(wvp); 640 } 641 642 /* Override with driver methods. */ 643 vap->iv_key_set = wpi_key_set; 644 vap->iv_key_delete = wpi_key_delete; 645 if (opmode == IEEE80211_M_IBSS) { 646 wvp->wv_recv_mgmt = vap->iv_recv_mgmt; 647 vap->iv_recv_mgmt = wpi_ibss_recv_mgmt; 648 } 649 wvp->wv_newstate = vap->iv_newstate; 650 vap->iv_newstate = wpi_newstate; 651 vap->iv_update_beacon = wpi_update_beacon; 652 vap->iv_max_aid = WPI_ID_IBSS_MAX - WPI_ID_IBSS_MIN + 1; 653 654 ieee80211_ratectl_init(vap); 655 /* Complete setup. */ 656 ieee80211_vap_attach(vap, ieee80211_media_change, 657 ieee80211_media_status, mac); 658 ic->ic_opmode = opmode; 659 return vap; 660 } 661 662 static void 663 wpi_vap_delete(struct ieee80211vap *vap) 664 { 665 struct wpi_vap *wvp = WPI_VAP(vap); 666 struct wpi_buf *bcn = &wvp->wv_bcbuf; 667 enum ieee80211_opmode opmode = vap->iv_opmode; 668 669 ieee80211_ratectl_deinit(vap); 670 ieee80211_vap_detach(vap); 671 672 if (opmode == IEEE80211_M_IBSS || opmode == IEEE80211_M_HOSTAP) { 673 if (bcn->m != NULL) 674 m_freem(bcn->m); 675 676 WPI_VAP_LOCK_DESTROY(wvp); 677 } 678 679 free(wvp, M_80211_VAP); 680 } 681 682 static int 683 wpi_detach(device_t dev) 684 { 685 struct wpi_softc *sc = device_get_softc(dev); 686 struct ieee80211com *ic = &sc->sc_ic; 687 uint8_t qid; 688 689 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 690 691 if (ic->ic_vap_create == wpi_vap_create) { 692 ieee80211_draintask(ic, &sc->sc_radioon_task); 693 ieee80211_draintask(ic, &sc->sc_radiooff_task); 694 695 wpi_stop(sc); 696 697 callout_drain(&sc->watchdog_rfkill); 698 callout_drain(&sc->tx_timeout); 699 callout_drain(&sc->scan_timeout); 700 callout_drain(&sc->calib_to); 701 ieee80211_ifdetach(ic); 702 } 703 704 /* Uninstall interrupt handler. */ 705 if (sc->irq != NULL) { 706 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 707 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 708 sc->irq); 709 pci_release_msi(dev); 710 } 711 712 if (sc->txq[0].data_dmat) { 713 /* Free DMA resources. */ 714 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) 715 wpi_free_tx_ring(sc, &sc->txq[qid]); 716 717 wpi_free_rx_ring(sc); 718 wpi_free_shared(sc); 719 } 720 721 if (sc->fw_dma.tag) 722 wpi_free_fwmem(sc); 723 724 if (sc->mem != NULL) 725 bus_release_resource(dev, SYS_RES_MEMORY, 726 rman_get_rid(sc->mem), sc->mem); 727 728 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 729 WPI_TXQ_STATE_LOCK_DESTROY(sc); 730 WPI_TXQ_LOCK_DESTROY(sc); 731 WPI_NT_LOCK_DESTROY(sc); 732 WPI_RXON_LOCK_DESTROY(sc); 733 WPI_TX_LOCK_DESTROY(sc); 734 WPI_LOCK_DESTROY(sc); 735 return 0; 736 } 737 738 static int 739 wpi_shutdown(device_t dev) 740 { 741 struct wpi_softc *sc = device_get_softc(dev); 742 743 wpi_stop(sc); 744 return 0; 745 } 746 747 static int 748 wpi_suspend(device_t dev) 749 { 750 struct wpi_softc *sc = device_get_softc(dev); 751 struct ieee80211com *ic = &sc->sc_ic; 752 753 ieee80211_suspend_all(ic); 754 return 0; 755 } 756 757 static int 758 wpi_resume(device_t dev) 759 { 760 struct wpi_softc *sc = device_get_softc(dev); 761 struct ieee80211com *ic = &sc->sc_ic; 762 763 /* Clear device-specific "PCI retry timeout" register (41h). */ 764 pci_write_config(dev, 0x41, 0, 1); 765 766 ieee80211_resume_all(ic); 767 return 0; 768 } 769 770 /* 771 * Grab exclusive access to NIC memory. 772 */ 773 static int 774 wpi_nic_lock(struct wpi_softc *sc) 775 { 776 int ntries; 777 778 /* Request exclusive access to NIC. */ 779 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 780 781 /* Spin until we actually get the lock. */ 782 for (ntries = 0; ntries < 1000; ntries++) { 783 if ((WPI_READ(sc, WPI_GP_CNTRL) & 784 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 785 WPI_GP_CNTRL_MAC_ACCESS_ENA) 786 return 0; 787 DELAY(10); 788 } 789 790 device_printf(sc->sc_dev, "could not lock memory\n"); 791 792 return ETIMEDOUT; 793 } 794 795 /* 796 * Release lock on NIC memory. 797 */ 798 static __inline void 799 wpi_nic_unlock(struct wpi_softc *sc) 800 { 801 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 802 } 803 804 static __inline uint32_t 805 wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 806 { 807 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 808 WPI_BARRIER_READ_WRITE(sc); 809 return WPI_READ(sc, WPI_PRPH_RDATA); 810 } 811 812 static __inline void 813 wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 814 { 815 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 816 WPI_BARRIER_WRITE(sc); 817 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 818 } 819 820 static __inline void 821 wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 822 { 823 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 824 } 825 826 static __inline void 827 wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 828 { 829 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 830 } 831 832 static __inline void 833 wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 834 const uint32_t *data, uint32_t count) 835 { 836 for (; count != 0; count--, data++, addr += 4) 837 wpi_prph_write(sc, addr, *data); 838 } 839 840 static __inline uint32_t 841 wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 842 { 843 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 844 WPI_BARRIER_READ_WRITE(sc); 845 return WPI_READ(sc, WPI_MEM_RDATA); 846 } 847 848 static __inline void 849 wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 850 int count) 851 { 852 for (; count > 0; count--, addr += 4) 853 *data++ = wpi_mem_read(sc, addr); 854 } 855 856 static int 857 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 858 { 859 uint8_t *out = data; 860 uint32_t val; 861 int error, ntries; 862 863 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 864 865 if ((error = wpi_nic_lock(sc)) != 0) 866 return error; 867 868 for (; count > 0; count -= 2, addr++) { 869 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 870 for (ntries = 0; ntries < 10; ntries++) { 871 val = WPI_READ(sc, WPI_EEPROM); 872 if (val & WPI_EEPROM_READ_VALID) 873 break; 874 DELAY(5); 875 } 876 if (ntries == 10) { 877 device_printf(sc->sc_dev, 878 "timeout reading ROM at 0x%x\n", addr); 879 return ETIMEDOUT; 880 } 881 *out++= val >> 16; 882 if (count > 1) 883 *out ++= val >> 24; 884 } 885 886 wpi_nic_unlock(sc); 887 888 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 889 890 return 0; 891 } 892 893 static void 894 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 895 { 896 if (error != 0) 897 return; 898 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 899 *(bus_addr_t *)arg = segs[0].ds_addr; 900 } 901 902 /* 903 * Allocates a contiguous block of dma memory of the requested size and 904 * alignment. 905 */ 906 static int 907 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 908 void **kvap, bus_size_t size, bus_size_t alignment) 909 { 910 int error; 911 912 dma->tag = NULL; 913 dma->size = size; 914 915 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 916 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 917 1, size, 0, NULL, NULL, &dma->tag); 918 if (error != 0) 919 goto fail; 920 921 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 922 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 923 if (error != 0) 924 goto fail; 925 926 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 927 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 928 if (error != 0) 929 goto fail; 930 931 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 932 933 if (kvap != NULL) 934 *kvap = dma->vaddr; 935 936 return 0; 937 938 fail: wpi_dma_contig_free(dma); 939 return error; 940 } 941 942 static void 943 wpi_dma_contig_free(struct wpi_dma_info *dma) 944 { 945 if (dma->vaddr != NULL) { 946 bus_dmamap_sync(dma->tag, dma->map, 947 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 948 bus_dmamap_unload(dma->tag, dma->map); 949 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 950 dma->vaddr = NULL; 951 } 952 if (dma->tag != NULL) { 953 bus_dma_tag_destroy(dma->tag); 954 dma->tag = NULL; 955 } 956 } 957 958 /* 959 * Allocate a shared page between host and NIC. 960 */ 961 static int 962 wpi_alloc_shared(struct wpi_softc *sc) 963 { 964 /* Shared buffer must be aligned on a 4KB boundary. */ 965 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 966 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 967 } 968 969 static void 970 wpi_free_shared(struct wpi_softc *sc) 971 { 972 wpi_dma_contig_free(&sc->shared_dma); 973 } 974 975 /* 976 * Allocate DMA-safe memory for firmware transfer. 977 */ 978 static int 979 wpi_alloc_fwmem(struct wpi_softc *sc) 980 { 981 /* Must be aligned on a 16-byte boundary. */ 982 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 983 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 984 } 985 986 static void 987 wpi_free_fwmem(struct wpi_softc *sc) 988 { 989 wpi_dma_contig_free(&sc->fw_dma); 990 } 991 992 static int 993 wpi_alloc_rx_ring(struct wpi_softc *sc) 994 { 995 struct wpi_rx_ring *ring = &sc->rxq; 996 bus_size_t size; 997 int i, error; 998 999 ring->cur = 0; 1000 ring->update = 0; 1001 1002 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1003 1004 /* Allocate RX descriptors (16KB aligned.) */ 1005 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 1006 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1007 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 1008 if (error != 0) { 1009 device_printf(sc->sc_dev, 1010 "%s: could not allocate RX ring DMA memory, error %d\n", 1011 __func__, error); 1012 goto fail; 1013 } 1014 1015 /* Create RX buffer DMA tag. */ 1016 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1017 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1018 MJUMPAGESIZE, 1, MJUMPAGESIZE, 0, NULL, NULL, &ring->data_dmat); 1019 if (error != 0) { 1020 device_printf(sc->sc_dev, 1021 "%s: could not create RX buf DMA tag, error %d\n", 1022 __func__, error); 1023 goto fail; 1024 } 1025 1026 /* 1027 * Allocate and map RX buffers. 1028 */ 1029 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1030 struct wpi_rx_data *data = &ring->data[i]; 1031 bus_addr_t paddr; 1032 1033 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1034 if (error != 0) { 1035 device_printf(sc->sc_dev, 1036 "%s: could not create RX buf DMA map, error %d\n", 1037 __func__, error); 1038 goto fail; 1039 } 1040 1041 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1042 if (data->m == NULL) { 1043 device_printf(sc->sc_dev, 1044 "%s: could not allocate RX mbuf\n", __func__); 1045 error = ENOBUFS; 1046 goto fail; 1047 } 1048 1049 error = bus_dmamap_load(ring->data_dmat, data->map, 1050 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1051 &paddr, BUS_DMA_NOWAIT); 1052 if (error != 0 && error != EFBIG) { 1053 device_printf(sc->sc_dev, 1054 "%s: can't map mbuf (error %d)\n", __func__, 1055 error); 1056 goto fail; 1057 } 1058 1059 /* Set physical address of RX buffer. */ 1060 ring->desc[i] = htole32(paddr); 1061 } 1062 1063 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1064 BUS_DMASYNC_PREWRITE); 1065 1066 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1067 1068 return 0; 1069 1070 fail: wpi_free_rx_ring(sc); 1071 1072 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1073 1074 return error; 1075 } 1076 1077 static void 1078 wpi_update_rx_ring(struct wpi_softc *sc) 1079 { 1080 WPI_WRITE(sc, WPI_FH_RX_WPTR, sc->rxq.cur & ~7); 1081 } 1082 1083 static void 1084 wpi_update_rx_ring_ps(struct wpi_softc *sc) 1085 { 1086 struct wpi_rx_ring *ring = &sc->rxq; 1087 1088 if (ring->update != 0) { 1089 /* Wait for INT_WAKEUP event. */ 1090 return; 1091 } 1092 1093 WPI_TXQ_LOCK(sc); 1094 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1095 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_SLEEP) { 1096 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1097 __func__); 1098 ring->update = 1; 1099 } else { 1100 wpi_update_rx_ring(sc); 1101 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1102 } 1103 WPI_TXQ_UNLOCK(sc); 1104 } 1105 1106 static void 1107 wpi_reset_rx_ring(struct wpi_softc *sc) 1108 { 1109 struct wpi_rx_ring *ring = &sc->rxq; 1110 int ntries; 1111 1112 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1113 1114 if (wpi_nic_lock(sc) == 0) { 1115 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1116 for (ntries = 0; ntries < 1000; ntries++) { 1117 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1118 WPI_FH_RX_STATUS_IDLE) 1119 break; 1120 DELAY(10); 1121 } 1122 wpi_nic_unlock(sc); 1123 } 1124 1125 ring->cur = 0; 1126 ring->update = 0; 1127 } 1128 1129 static void 1130 wpi_free_rx_ring(struct wpi_softc *sc) 1131 { 1132 struct wpi_rx_ring *ring = &sc->rxq; 1133 int i; 1134 1135 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1136 1137 wpi_dma_contig_free(&ring->desc_dma); 1138 1139 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1140 struct wpi_rx_data *data = &ring->data[i]; 1141 1142 if (data->m != NULL) { 1143 bus_dmamap_sync(ring->data_dmat, data->map, 1144 BUS_DMASYNC_POSTREAD); 1145 bus_dmamap_unload(ring->data_dmat, data->map); 1146 m_freem(data->m); 1147 data->m = NULL; 1148 } 1149 if (data->map != NULL) 1150 bus_dmamap_destroy(ring->data_dmat, data->map); 1151 } 1152 if (ring->data_dmat != NULL) { 1153 bus_dma_tag_destroy(ring->data_dmat); 1154 ring->data_dmat = NULL; 1155 } 1156 } 1157 1158 static int 1159 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, uint8_t qid) 1160 { 1161 bus_addr_t paddr; 1162 bus_size_t size; 1163 int i, error; 1164 1165 ring->qid = qid; 1166 ring->queued = 0; 1167 ring->cur = 0; 1168 ring->pending = 0; 1169 ring->update = 0; 1170 1171 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1172 1173 /* Allocate TX descriptors (16KB aligned.) */ 1174 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1175 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1176 size, WPI_RING_DMA_ALIGN); 1177 if (error != 0) { 1178 device_printf(sc->sc_dev, 1179 "%s: could not allocate TX ring DMA memory, error %d\n", 1180 __func__, error); 1181 goto fail; 1182 } 1183 1184 /* Update shared area with ring physical address. */ 1185 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1186 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1187 BUS_DMASYNC_PREWRITE); 1188 1189 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1190 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1191 size, 4); 1192 if (error != 0) { 1193 device_printf(sc->sc_dev, 1194 "%s: could not allocate TX cmd DMA memory, error %d\n", 1195 __func__, error); 1196 goto fail; 1197 } 1198 1199 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1200 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1201 WPI_MAX_SCATTER - 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 1202 if (error != 0) { 1203 device_printf(sc->sc_dev, 1204 "%s: could not create TX buf DMA tag, error %d\n", 1205 __func__, error); 1206 goto fail; 1207 } 1208 1209 paddr = ring->cmd_dma.paddr; 1210 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1211 struct wpi_tx_data *data = &ring->data[i]; 1212 1213 data->cmd_paddr = paddr; 1214 paddr += sizeof (struct wpi_tx_cmd); 1215 1216 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1217 if (error != 0) { 1218 device_printf(sc->sc_dev, 1219 "%s: could not create TX buf DMA map, error %d\n", 1220 __func__, error); 1221 goto fail; 1222 } 1223 } 1224 1225 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1226 1227 return 0; 1228 1229 fail: wpi_free_tx_ring(sc, ring); 1230 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1231 return error; 1232 } 1233 1234 static void 1235 wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1236 { 1237 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1238 } 1239 1240 static void 1241 wpi_update_tx_ring_ps(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1242 { 1243 1244 if (ring->update != 0) { 1245 /* Wait for INT_WAKEUP event. */ 1246 return; 1247 } 1248 1249 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1250 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_SLEEP) { 1251 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1252 __func__, ring->qid); 1253 ring->update = 1; 1254 } else { 1255 wpi_update_tx_ring(sc, ring); 1256 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1257 } 1258 } 1259 1260 static void 1261 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1262 { 1263 int i; 1264 1265 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1266 1267 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1268 struct wpi_tx_data *data = &ring->data[i]; 1269 1270 if (data->m != NULL) { 1271 bus_dmamap_sync(ring->data_dmat, data->map, 1272 BUS_DMASYNC_POSTWRITE); 1273 bus_dmamap_unload(ring->data_dmat, data->map); 1274 m_freem(data->m); 1275 data->m = NULL; 1276 } 1277 if (data->ni != NULL) { 1278 ieee80211_free_node(data->ni); 1279 data->ni = NULL; 1280 } 1281 } 1282 /* Clear TX descriptors. */ 1283 memset(ring->desc, 0, ring->desc_dma.size); 1284 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1285 BUS_DMASYNC_PREWRITE); 1286 ring->queued = 0; 1287 ring->cur = 0; 1288 ring->pending = 0; 1289 ring->update = 0; 1290 } 1291 1292 static void 1293 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1294 { 1295 int i; 1296 1297 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1298 1299 wpi_dma_contig_free(&ring->desc_dma); 1300 wpi_dma_contig_free(&ring->cmd_dma); 1301 1302 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1303 struct wpi_tx_data *data = &ring->data[i]; 1304 1305 if (data->m != NULL) { 1306 bus_dmamap_sync(ring->data_dmat, data->map, 1307 BUS_DMASYNC_POSTWRITE); 1308 bus_dmamap_unload(ring->data_dmat, data->map); 1309 m_freem(data->m); 1310 } 1311 if (data->map != NULL) 1312 bus_dmamap_destroy(ring->data_dmat, data->map); 1313 } 1314 if (ring->data_dmat != NULL) { 1315 bus_dma_tag_destroy(ring->data_dmat); 1316 ring->data_dmat = NULL; 1317 } 1318 } 1319 1320 /* 1321 * Extract various information from EEPROM. 1322 */ 1323 static int 1324 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 1325 { 1326 #define WPI_CHK(res) do { \ 1327 if ((error = res) != 0) \ 1328 goto fail; \ 1329 } while (0) 1330 uint8_t i; 1331 int error; 1332 1333 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1334 1335 /* Adapter has to be powered on for EEPROM access to work. */ 1336 if ((error = wpi_apm_init(sc)) != 0) { 1337 device_printf(sc->sc_dev, 1338 "%s: could not power ON adapter, error %d\n", __func__, 1339 error); 1340 return error; 1341 } 1342 1343 if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) { 1344 device_printf(sc->sc_dev, "bad EEPROM signature\n"); 1345 error = EIO; 1346 goto fail; 1347 } 1348 /* Clear HW ownership of EEPROM. */ 1349 WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER); 1350 1351 /* Read the hardware capabilities, revision and SKU type. */ 1352 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap, 1353 sizeof(sc->cap))); 1354 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 1355 sizeof(sc->rev))); 1356 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1357 sizeof(sc->type))); 1358 1359 sc->rev = le16toh(sc->rev); 1360 DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, 1361 sc->rev, sc->type); 1362 1363 /* Read the regulatory domain (4 ASCII characters.) */ 1364 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 1365 sizeof(sc->domain))); 1366 1367 /* Read MAC address. */ 1368 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 1369 IEEE80211_ADDR_LEN)); 1370 1371 /* Read the list of authorized channels. */ 1372 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 1373 WPI_CHK(wpi_read_eeprom_channels(sc, i)); 1374 1375 /* Read the list of TX power groups. */ 1376 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 1377 WPI_CHK(wpi_read_eeprom_group(sc, i)); 1378 1379 fail: wpi_apm_stop(sc); /* Power OFF adapter. */ 1380 1381 DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 1382 __func__); 1383 1384 return error; 1385 #undef WPI_CHK 1386 } 1387 1388 /* 1389 * Translate EEPROM flags to net80211. 1390 */ 1391 static uint32_t 1392 wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel) 1393 { 1394 uint32_t nflags; 1395 1396 nflags = 0; 1397 if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0) 1398 nflags |= IEEE80211_CHAN_PASSIVE; 1399 if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0) 1400 nflags |= IEEE80211_CHAN_NOADHOC; 1401 if (channel->flags & WPI_EEPROM_CHAN_RADAR) { 1402 nflags |= IEEE80211_CHAN_DFS; 1403 /* XXX apparently IBSS may still be marked */ 1404 nflags |= IEEE80211_CHAN_NOADHOC; 1405 } 1406 1407 /* XXX HOSTAP uses WPI_MODE_IBSS */ 1408 if (nflags & IEEE80211_CHAN_NOADHOC) 1409 nflags |= IEEE80211_CHAN_NOHOSTAP; 1410 1411 return nflags; 1412 } 1413 1414 static void 1415 wpi_read_eeprom_band(struct wpi_softc *sc, uint8_t n, int maxchans, 1416 int *nchans, struct ieee80211_channel chans[]) 1417 { 1418 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1419 const struct wpi_chan_band *band = &wpi_bands[n]; 1420 uint32_t nflags; 1421 uint8_t bands[IEEE80211_MODE_BYTES]; 1422 uint8_t chan, i; 1423 int error; 1424 1425 memset(bands, 0, sizeof(bands)); 1426 1427 if (n == 0) { 1428 setbit(bands, IEEE80211_MODE_11B); 1429 setbit(bands, IEEE80211_MODE_11G); 1430 } else 1431 setbit(bands, IEEE80211_MODE_11A); 1432 1433 for (i = 0; i < band->nchan; i++) { 1434 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1435 DPRINTF(sc, WPI_DEBUG_EEPROM, 1436 "Channel Not Valid: %d, band %d\n", 1437 band->chan[i],n); 1438 continue; 1439 } 1440 1441 chan = band->chan[i]; 1442 nflags = wpi_eeprom_channel_flags(&channels[i]); 1443 error = ieee80211_add_channel(chans, maxchans, nchans, 1444 chan, 0, channels[i].maxpwr, nflags, bands); 1445 if (error != 0) 1446 break; 1447 1448 /* Save maximum allowed TX power for this channel. */ 1449 sc->maxpwr[chan] = channels[i].maxpwr; 1450 1451 DPRINTF(sc, WPI_DEBUG_EEPROM, 1452 "adding chan %d flags=0x%x maxpwr=%d, offset %d\n", 1453 chan, channels[i].flags, sc->maxpwr[chan], *nchans); 1454 } 1455 } 1456 1457 /** 1458 * Read the eeprom to find out what channels are valid for the given 1459 * band and update net80211 with what we find. 1460 */ 1461 static int 1462 wpi_read_eeprom_channels(struct wpi_softc *sc, uint8_t n) 1463 { 1464 struct ieee80211com *ic = &sc->sc_ic; 1465 const struct wpi_chan_band *band = &wpi_bands[n]; 1466 int error; 1467 1468 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1469 1470 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1471 band->nchan * sizeof (struct wpi_eeprom_chan)); 1472 if (error != 0) { 1473 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1474 return error; 1475 } 1476 1477 wpi_read_eeprom_band(sc, n, IEEE80211_CHAN_MAX, &ic->ic_nchans, 1478 ic->ic_channels); 1479 1480 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1481 1482 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1483 1484 return 0; 1485 } 1486 1487 static struct wpi_eeprom_chan * 1488 wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1489 { 1490 int i, j; 1491 1492 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1493 for (i = 0; i < wpi_bands[j].nchan; i++) 1494 if (wpi_bands[j].chan[i] == c->ic_ieee && 1495 ((j == 0) ^ IEEE80211_IS_CHAN_A(c)) == 1) 1496 return &sc->eeprom_channels[j][i]; 1497 1498 return NULL; 1499 } 1500 1501 static void 1502 wpi_getradiocaps(struct ieee80211com *ic, 1503 int maxchans, int *nchans, struct ieee80211_channel chans[]) 1504 { 1505 struct wpi_softc *sc = ic->ic_softc; 1506 int i; 1507 1508 /* Parse the list of authorized channels. */ 1509 for (i = 0; i < WPI_CHAN_BANDS_COUNT && *nchans < maxchans; i++) 1510 wpi_read_eeprom_band(sc, i, maxchans, nchans, chans); 1511 } 1512 1513 /* 1514 * Enforce flags read from EEPROM. 1515 */ 1516 static int 1517 wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1518 int nchan, struct ieee80211_channel chans[]) 1519 { 1520 struct wpi_softc *sc = ic->ic_softc; 1521 int i; 1522 1523 for (i = 0; i < nchan; i++) { 1524 struct ieee80211_channel *c = &chans[i]; 1525 struct wpi_eeprom_chan *channel; 1526 1527 channel = wpi_find_eeprom_channel(sc, c); 1528 if (channel == NULL) { 1529 ic_printf(ic, "%s: invalid channel %u freq %u/0x%x\n", 1530 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1531 return EINVAL; 1532 } 1533 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1534 } 1535 1536 return 0; 1537 } 1538 1539 static int 1540 wpi_read_eeprom_group(struct wpi_softc *sc, uint8_t n) 1541 { 1542 struct wpi_power_group *group = &sc->groups[n]; 1543 struct wpi_eeprom_group rgroup; 1544 int i, error; 1545 1546 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1547 1548 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1549 &rgroup, sizeof rgroup)) != 0) { 1550 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1551 return error; 1552 } 1553 1554 /* Save TX power group information. */ 1555 group->chan = rgroup.chan; 1556 group->maxpwr = rgroup.maxpwr; 1557 /* Retrieve temperature at which the samples were taken. */ 1558 group->temp = (int16_t)le16toh(rgroup.temp); 1559 1560 DPRINTF(sc, WPI_DEBUG_EEPROM, 1561 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1562 group->maxpwr, group->temp); 1563 1564 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1565 group->samples[i].index = rgroup.samples[i].index; 1566 group->samples[i].power = rgroup.samples[i].power; 1567 1568 DPRINTF(sc, WPI_DEBUG_EEPROM, 1569 "\tsample %d: index=%d power=%d\n", i, 1570 group->samples[i].index, group->samples[i].power); 1571 } 1572 1573 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1574 1575 return 0; 1576 } 1577 1578 static __inline uint8_t 1579 wpi_add_node_entry_adhoc(struct wpi_softc *sc) 1580 { 1581 uint8_t newid = WPI_ID_IBSS_MIN; 1582 1583 for (; newid <= WPI_ID_IBSS_MAX; newid++) { 1584 if ((sc->nodesmsk & (1 << newid)) == 0) { 1585 sc->nodesmsk |= 1 << newid; 1586 return newid; 1587 } 1588 } 1589 1590 return WPI_ID_UNDEFINED; 1591 } 1592 1593 static __inline uint8_t 1594 wpi_add_node_entry_sta(struct wpi_softc *sc) 1595 { 1596 sc->nodesmsk |= 1 << WPI_ID_BSS; 1597 1598 return WPI_ID_BSS; 1599 } 1600 1601 static __inline int 1602 wpi_check_node_entry(struct wpi_softc *sc, uint8_t id) 1603 { 1604 if (id == WPI_ID_UNDEFINED) 1605 return 0; 1606 1607 return (sc->nodesmsk >> id) & 1; 1608 } 1609 1610 static __inline void 1611 wpi_clear_node_table(struct wpi_softc *sc) 1612 { 1613 sc->nodesmsk = 0; 1614 } 1615 1616 static __inline void 1617 wpi_del_node_entry(struct wpi_softc *sc, uint8_t id) 1618 { 1619 sc->nodesmsk &= ~(1 << id); 1620 } 1621 1622 static struct ieee80211_node * 1623 wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1624 { 1625 struct wpi_node *wn; 1626 1627 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1628 M_NOWAIT | M_ZERO); 1629 1630 if (wn == NULL) 1631 return NULL; 1632 1633 wn->id = WPI_ID_UNDEFINED; 1634 1635 return &wn->ni; 1636 } 1637 1638 static void 1639 wpi_node_free(struct ieee80211_node *ni) 1640 { 1641 struct wpi_softc *sc = ni->ni_ic->ic_softc; 1642 struct wpi_node *wn = WPI_NODE(ni); 1643 1644 if (wn->id != WPI_ID_UNDEFINED) { 1645 WPI_NT_LOCK(sc); 1646 if (wpi_check_node_entry(sc, wn->id)) { 1647 wpi_del_node_entry(sc, wn->id); 1648 wpi_del_node(sc, ni); 1649 } 1650 WPI_NT_UNLOCK(sc); 1651 } 1652 1653 sc->sc_node_free(ni); 1654 } 1655 1656 static __inline int 1657 wpi_check_bss_filter(struct wpi_softc *sc) 1658 { 1659 return (sc->rxon.filter & htole32(WPI_FILTER_BSS)) != 0; 1660 } 1661 1662 static void 1663 wpi_ibss_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m, int subtype, 1664 const struct ieee80211_rx_stats *rxs, 1665 int rssi, int nf) 1666 { 1667 struct ieee80211vap *vap = ni->ni_vap; 1668 struct wpi_softc *sc = vap->iv_ic->ic_softc; 1669 struct wpi_vap *wvp = WPI_VAP(vap); 1670 uint64_t ni_tstamp, rx_tstamp; 1671 1672 wvp->wv_recv_mgmt(ni, m, subtype, rxs, rssi, nf); 1673 1674 if (vap->iv_state == IEEE80211_S_RUN && 1675 (subtype == IEEE80211_FC0_SUBTYPE_BEACON || 1676 subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)) { 1677 ni_tstamp = le64toh(ni->ni_tstamp.tsf); 1678 rx_tstamp = le64toh(sc->rx_tstamp); 1679 1680 if (ni_tstamp >= rx_tstamp) { 1681 DPRINTF(sc, WPI_DEBUG_STATE, 1682 "ibss merge, tsf %ju tstamp %ju\n", 1683 (uintmax_t)rx_tstamp, (uintmax_t)ni_tstamp); 1684 (void) ieee80211_ibss_merge(ni); 1685 } 1686 } 1687 } 1688 1689 static void 1690 wpi_restore_node(void *arg, struct ieee80211_node *ni) 1691 { 1692 struct wpi_softc *sc = arg; 1693 struct wpi_node *wn = WPI_NODE(ni); 1694 int error; 1695 1696 WPI_NT_LOCK(sc); 1697 if (wn->id != WPI_ID_UNDEFINED) { 1698 wn->id = WPI_ID_UNDEFINED; 1699 if ((error = wpi_add_ibss_node(sc, ni)) != 0) { 1700 device_printf(sc->sc_dev, 1701 "%s: could not add IBSS node, error %d\n", 1702 __func__, error); 1703 } 1704 } 1705 WPI_NT_UNLOCK(sc); 1706 } 1707 1708 static void 1709 wpi_restore_node_table(struct wpi_softc *sc, struct wpi_vap *wvp) 1710 { 1711 struct ieee80211com *ic = &sc->sc_ic; 1712 1713 /* Set group keys once. */ 1714 WPI_NT_LOCK(sc); 1715 wvp->wv_gtk = 0; 1716 WPI_NT_UNLOCK(sc); 1717 1718 ieee80211_iterate_nodes(&ic->ic_sta, wpi_restore_node, sc); 1719 ieee80211_crypto_reload_keys(ic); 1720 } 1721 1722 /** 1723 * Called by net80211 when ever there is a change to 80211 state machine 1724 */ 1725 static int 1726 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1727 { 1728 struct wpi_vap *wvp = WPI_VAP(vap); 1729 struct ieee80211com *ic = vap->iv_ic; 1730 struct wpi_softc *sc = ic->ic_softc; 1731 int error = 0; 1732 1733 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1734 1735 WPI_TXQ_LOCK(sc); 1736 if (nstate > IEEE80211_S_INIT && sc->sc_running == 0) { 1737 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1738 WPI_TXQ_UNLOCK(sc); 1739 1740 return ENXIO; 1741 } 1742 WPI_TXQ_UNLOCK(sc); 1743 1744 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1745 ieee80211_state_name[vap->iv_state], 1746 ieee80211_state_name[nstate]); 1747 1748 if (vap->iv_state == IEEE80211_S_RUN && nstate < IEEE80211_S_RUN) { 1749 if ((error = wpi_set_pslevel(sc, 0, 0, 1)) != 0) { 1750 device_printf(sc->sc_dev, 1751 "%s: could not set power saving level\n", 1752 __func__); 1753 return error; 1754 } 1755 1756 wpi_set_led(sc, WPI_LED_LINK, 1, 0); 1757 } 1758 1759 switch (nstate) { 1760 case IEEE80211_S_SCAN: 1761 WPI_RXON_LOCK(sc); 1762 if (wpi_check_bss_filter(sc) != 0) { 1763 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1764 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1765 device_printf(sc->sc_dev, 1766 "%s: could not send RXON\n", __func__); 1767 } 1768 } 1769 WPI_RXON_UNLOCK(sc); 1770 break; 1771 1772 case IEEE80211_S_ASSOC: 1773 if (vap->iv_state != IEEE80211_S_RUN) 1774 break; 1775 /* FALLTHROUGH */ 1776 case IEEE80211_S_AUTH: 1777 /* 1778 * NB: do not optimize AUTH -> AUTH state transmission - 1779 * this will break powersave with non-QoS AP! 1780 */ 1781 1782 /* 1783 * The node must be registered in the firmware before auth. 1784 * Also the associd must be cleared on RUN -> ASSOC 1785 * transitions. 1786 */ 1787 if ((error = wpi_auth(sc, vap)) != 0) { 1788 device_printf(sc->sc_dev, 1789 "%s: could not move to AUTH state, error %d\n", 1790 __func__, error); 1791 } 1792 break; 1793 1794 case IEEE80211_S_RUN: 1795 /* 1796 * RUN -> RUN transition: 1797 * STA mode: Just restart the timers. 1798 * IBSS mode: Process IBSS merge. 1799 */ 1800 if (vap->iv_state == IEEE80211_S_RUN) { 1801 if (vap->iv_opmode != IEEE80211_M_IBSS) { 1802 WPI_RXON_LOCK(sc); 1803 wpi_calib_timeout(sc); 1804 WPI_RXON_UNLOCK(sc); 1805 break; 1806 } else { 1807 /* 1808 * Drop the BSS_FILTER bit 1809 * (there is no another way to change bssid). 1810 */ 1811 WPI_RXON_LOCK(sc); 1812 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1813 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1814 device_printf(sc->sc_dev, 1815 "%s: could not send RXON\n", 1816 __func__); 1817 } 1818 WPI_RXON_UNLOCK(sc); 1819 1820 /* Restore all what was lost. */ 1821 wpi_restore_node_table(sc, wvp); 1822 1823 /* XXX set conditionally? */ 1824 wpi_updateedca(ic); 1825 } 1826 } 1827 1828 /* 1829 * !RUN -> RUN requires setting the association id 1830 * which is done with a firmware cmd. We also defer 1831 * starting the timers until that work is done. 1832 */ 1833 if ((error = wpi_run(sc, vap)) != 0) { 1834 device_printf(sc->sc_dev, 1835 "%s: could not move to RUN state\n", __func__); 1836 } 1837 break; 1838 1839 default: 1840 break; 1841 } 1842 if (error != 0) { 1843 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1844 return error; 1845 } 1846 1847 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1848 1849 return wvp->wv_newstate(vap, nstate, arg); 1850 } 1851 1852 static void 1853 wpi_calib_timeout(void *arg) 1854 { 1855 struct wpi_softc *sc = arg; 1856 1857 if (wpi_check_bss_filter(sc) == 0) 1858 return; 1859 1860 wpi_power_calibration(sc); 1861 1862 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1863 } 1864 1865 static __inline uint8_t 1866 rate2plcp(const uint8_t rate) 1867 { 1868 switch (rate) { 1869 case 12: return 0xd; 1870 case 18: return 0xf; 1871 case 24: return 0x5; 1872 case 36: return 0x7; 1873 case 48: return 0x9; 1874 case 72: return 0xb; 1875 case 96: return 0x1; 1876 case 108: return 0x3; 1877 case 2: return 10; 1878 case 4: return 20; 1879 case 11: return 55; 1880 case 22: return 110; 1881 default: return 0; 1882 } 1883 } 1884 1885 static __inline uint8_t 1886 plcp2rate(const uint8_t plcp) 1887 { 1888 switch (plcp) { 1889 case 0xd: return 12; 1890 case 0xf: return 18; 1891 case 0x5: return 24; 1892 case 0x7: return 36; 1893 case 0x9: return 48; 1894 case 0xb: return 72; 1895 case 0x1: return 96; 1896 case 0x3: return 108; 1897 case 10: return 2; 1898 case 20: return 4; 1899 case 55: return 11; 1900 case 110: return 22; 1901 default: return 0; 1902 } 1903 } 1904 1905 /* Quickly determine if a given rate is CCK or OFDM. */ 1906 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1907 1908 static void 1909 wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1910 struct wpi_rx_data *data) 1911 { 1912 struct ieee80211com *ic = &sc->sc_ic; 1913 struct wpi_rx_ring *ring = &sc->rxq; 1914 struct wpi_rx_stat *stat; 1915 struct wpi_rx_head *head; 1916 struct wpi_rx_tail *tail; 1917 struct ieee80211_frame *wh; 1918 struct ieee80211_node *ni; 1919 struct mbuf *m, *m1; 1920 bus_addr_t paddr; 1921 uint32_t flags; 1922 uint16_t len; 1923 int error; 1924 1925 stat = (struct wpi_rx_stat *)(desc + 1); 1926 1927 if (__predict_false(stat->len > WPI_STAT_MAXLEN)) { 1928 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1929 goto fail1; 1930 } 1931 1932 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1933 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1934 len = le16toh(head->len); 1935 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1936 flags = le32toh(tail->flags); 1937 1938 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1939 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1940 le32toh(desc->len), len, (int8_t)stat->rssi, 1941 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1942 1943 /* Discard frames with a bad FCS early. */ 1944 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1945 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1946 __func__, flags); 1947 goto fail1; 1948 } 1949 /* Discard frames that are too short. */ 1950 if (len < sizeof (struct ieee80211_frame_ack)) { 1951 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1952 __func__, len); 1953 goto fail1; 1954 } 1955 1956 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1957 if (__predict_false(m1 == NULL)) { 1958 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1959 __func__); 1960 goto fail1; 1961 } 1962 bus_dmamap_unload(ring->data_dmat, data->map); 1963 1964 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1965 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1966 if (__predict_false(error != 0 && error != EFBIG)) { 1967 device_printf(sc->sc_dev, 1968 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1969 m_freem(m1); 1970 1971 /* Try to reload the old mbuf. */ 1972 error = bus_dmamap_load(ring->data_dmat, data->map, 1973 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1974 &paddr, BUS_DMA_NOWAIT); 1975 if (error != 0 && error != EFBIG) { 1976 panic("%s: could not load old RX mbuf", __func__); 1977 } 1978 /* Physical address may have changed. */ 1979 ring->desc[ring->cur] = htole32(paddr); 1980 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1981 BUS_DMASYNC_PREWRITE); 1982 goto fail1; 1983 } 1984 1985 m = data->m; 1986 data->m = m1; 1987 /* Update RX descriptor. */ 1988 ring->desc[ring->cur] = htole32(paddr); 1989 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1990 BUS_DMASYNC_PREWRITE); 1991 1992 /* Finalize mbuf. */ 1993 m->m_data = (caddr_t)(head + 1); 1994 m->m_pkthdr.len = m->m_len = len; 1995 1996 /* Grab a reference to the source node. */ 1997 wh = mtod(m, struct ieee80211_frame *); 1998 1999 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 2000 (flags & WPI_RX_CIPHER_MASK) == WPI_RX_CIPHER_CCMP) { 2001 /* Check whether decryption was successful or not. */ 2002 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 2003 DPRINTF(sc, WPI_DEBUG_RECV, 2004 "CCMP decryption failed 0x%x\n", flags); 2005 goto fail2; 2006 } 2007 m->m_flags |= M_WEP; 2008 } 2009 2010 if (len >= sizeof(struct ieee80211_frame_min)) 2011 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 2012 else 2013 ni = NULL; 2014 2015 sc->rx_tstamp = tail->tstamp; 2016 2017 if (ieee80211_radiotap_active(ic)) { 2018 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 2019 2020 tap->wr_flags = 0; 2021 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 2022 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 2023 tap->wr_dbm_antsignal = (int8_t)(stat->rssi + WPI_RSSI_OFFSET); 2024 tap->wr_dbm_antnoise = WPI_RSSI_OFFSET; 2025 tap->wr_tsft = tail->tstamp; 2026 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 2027 tap->wr_rate = plcp2rate(head->plcp); 2028 } 2029 2030 WPI_UNLOCK(sc); 2031 2032 /* Send the frame to the 802.11 layer. */ 2033 if (ni != NULL) { 2034 (void)ieee80211_input(ni, m, stat->rssi, WPI_RSSI_OFFSET); 2035 /* Node is no longer needed. */ 2036 ieee80211_free_node(ni); 2037 } else 2038 (void)ieee80211_input_all(ic, m, stat->rssi, WPI_RSSI_OFFSET); 2039 2040 WPI_LOCK(sc); 2041 2042 return; 2043 2044 fail2: m_freem(m); 2045 2046 fail1: counter_u64_add(ic->ic_ierrors, 1); 2047 } 2048 2049 static void 2050 wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 2051 struct wpi_rx_data *data) 2052 { 2053 /* Ignore */ 2054 } 2055 2056 static void 2057 wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 2058 { 2059 struct ieee80211_ratectl_tx_status *txs = &sc->sc_txs; 2060 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 2061 struct wpi_tx_data *data = &ring->data[desc->idx]; 2062 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 2063 struct mbuf *m; 2064 struct ieee80211_node *ni; 2065 uint32_t status = le32toh(stat->status); 2066 2067 KASSERT(data->ni != NULL, ("no node")); 2068 KASSERT(data->m != NULL, ("no mbuf")); 2069 2070 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2071 2072 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 2073 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 2074 "status %x\n", __func__, desc->qid, desc->idx, stat->ackfailcnt, 2075 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 2076 2077 /* Unmap and free mbuf. */ 2078 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 2079 bus_dmamap_unload(ring->data_dmat, data->map); 2080 m = data->m, data->m = NULL; 2081 ni = data->ni, data->ni = NULL; 2082 2083 /* Restore frame header. */ 2084 KASSERT(M_LEADINGSPACE(m) >= data->hdrlen, ("no frame header!")); 2085 M_PREPEND(m, data->hdrlen, M_NOWAIT); 2086 KASSERT(m != NULL, ("%s: m is NULL\n", __func__)); 2087 2088 /* 2089 * Update rate control statistics for the node. 2090 */ 2091 txs->pktlen = m->m_pkthdr.len; 2092 txs->short_retries = stat->rtsfailcnt; 2093 txs->long_retries = stat->ackfailcnt / WPI_NTRIES_DEFAULT; 2094 if (!(status & WPI_TX_STATUS_FAIL)) 2095 txs->status = IEEE80211_RATECTL_TX_SUCCESS; 2096 else { 2097 switch (status & 0xff) { 2098 case WPI_TX_STATUS_FAIL_SHORT_LIMIT: 2099 txs->status = IEEE80211_RATECTL_TX_FAIL_SHORT; 2100 break; 2101 case WPI_TX_STATUS_FAIL_LONG_LIMIT: 2102 txs->status = IEEE80211_RATECTL_TX_FAIL_LONG; 2103 break; 2104 case WPI_TX_STATUS_FAIL_LIFE_EXPIRE: 2105 txs->status = IEEE80211_RATECTL_TX_FAIL_EXPIRED; 2106 break; 2107 default: 2108 txs->status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED; 2109 break; 2110 } 2111 } 2112 2113 ieee80211_ratectl_tx_complete(ni, txs); 2114 ieee80211_tx_complete(ni, m, (status & WPI_TX_STATUS_FAIL) != 0); 2115 2116 WPI_TXQ_STATE_LOCK(sc); 2117 if (--ring->queued > 0) 2118 callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, sc); 2119 else 2120 callout_stop(&sc->tx_timeout); 2121 WPI_TXQ_STATE_UNLOCK(sc); 2122 2123 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2124 } 2125 2126 /* 2127 * Process a "command done" firmware notification. This is where we wakeup 2128 * processes waiting for a synchronous command completion. 2129 */ 2130 static void 2131 wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 2132 { 2133 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 2134 struct wpi_tx_data *data; 2135 struct wpi_tx_cmd *cmd; 2136 2137 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid %x idx %d flags %x " 2138 "type %s len %d\n", desc->qid, desc->idx, 2139 desc->flags, wpi_cmd_str(desc->type), 2140 le32toh(desc->len)); 2141 2142 if ((desc->qid & WPI_RX_DESC_QID_MSK) != WPI_CMD_QUEUE_NUM) 2143 return; /* Not a command ack. */ 2144 2145 KASSERT(ring->queued == 0, ("ring->queued must be 0")); 2146 2147 data = &ring->data[desc->idx]; 2148 cmd = &ring->cmd[desc->idx]; 2149 2150 /* If the command was mapped in an mbuf, free it. */ 2151 if (data->m != NULL) { 2152 bus_dmamap_sync(ring->data_dmat, data->map, 2153 BUS_DMASYNC_POSTWRITE); 2154 bus_dmamap_unload(ring->data_dmat, data->map); 2155 m_freem(data->m); 2156 data->m = NULL; 2157 } 2158 2159 wakeup(cmd); 2160 2161 if (desc->type == WPI_CMD_SET_POWER_MODE) { 2162 struct wpi_pmgt_cmd *pcmd = (struct wpi_pmgt_cmd *)cmd->data; 2163 2164 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2165 BUS_DMASYNC_POSTREAD); 2166 2167 WPI_TXQ_LOCK(sc); 2168 if (le16toh(pcmd->flags) & WPI_PS_ALLOW_SLEEP) { 2169 sc->sc_update_rx_ring = wpi_update_rx_ring_ps; 2170 sc->sc_update_tx_ring = wpi_update_tx_ring_ps; 2171 } else { 2172 sc->sc_update_rx_ring = wpi_update_rx_ring; 2173 sc->sc_update_tx_ring = wpi_update_tx_ring; 2174 } 2175 WPI_TXQ_UNLOCK(sc); 2176 } 2177 } 2178 2179 static void 2180 wpi_notif_intr(struct wpi_softc *sc) 2181 { 2182 struct ieee80211com *ic = &sc->sc_ic; 2183 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2184 uint32_t hw; 2185 2186 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 2187 BUS_DMASYNC_POSTREAD); 2188 2189 hw = le32toh(sc->shared->next) & 0xfff; 2190 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 2191 2192 while (sc->rxq.cur != hw) { 2193 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 2194 2195 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 2196 struct wpi_rx_desc *desc; 2197 2198 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2199 BUS_DMASYNC_POSTREAD); 2200 desc = mtod(data->m, struct wpi_rx_desc *); 2201 2202 DPRINTF(sc, WPI_DEBUG_NOTIFY, 2203 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 2204 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 2205 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 2206 2207 if (!(desc->qid & WPI_UNSOLICITED_RX_NOTIF)) { 2208 /* Reply to a command. */ 2209 wpi_cmd_done(sc, desc); 2210 } 2211 2212 switch (desc->type) { 2213 case WPI_RX_DONE: 2214 /* An 802.11 frame has been received. */ 2215 wpi_rx_done(sc, desc, data); 2216 2217 if (__predict_false(sc->sc_running == 0)) { 2218 /* wpi_stop() was called. */ 2219 return; 2220 } 2221 2222 break; 2223 2224 case WPI_TX_DONE: 2225 /* An 802.11 frame has been transmitted. */ 2226 wpi_tx_done(sc, desc); 2227 break; 2228 2229 case WPI_RX_STATISTICS: 2230 case WPI_BEACON_STATISTICS: 2231 wpi_rx_statistics(sc, desc, data); 2232 break; 2233 2234 case WPI_BEACON_MISSED: 2235 { 2236 struct wpi_beacon_missed *miss = 2237 (struct wpi_beacon_missed *)(desc + 1); 2238 uint32_t expected, misses, received, threshold; 2239 2240 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2241 BUS_DMASYNC_POSTREAD); 2242 2243 misses = le32toh(miss->consecutive); 2244 expected = le32toh(miss->expected); 2245 received = le32toh(miss->received); 2246 threshold = MAX(2, vap->iv_bmissthreshold); 2247 2248 DPRINTF(sc, WPI_DEBUG_BMISS, 2249 "%s: beacons missed %u(%u) (received %u/%u)\n", 2250 __func__, misses, le32toh(miss->total), received, 2251 expected); 2252 2253 if (misses >= threshold || 2254 (received == 0 && expected >= threshold)) { 2255 WPI_RXON_LOCK(sc); 2256 if (callout_pending(&sc->scan_timeout)) { 2257 wpi_cmd(sc, WPI_CMD_SCAN_ABORT, NULL, 2258 0, 1); 2259 } 2260 WPI_RXON_UNLOCK(sc); 2261 if (vap->iv_state == IEEE80211_S_RUN && 2262 (ic->ic_flags & IEEE80211_F_SCAN) == 0) 2263 ieee80211_beacon_miss(ic); 2264 } 2265 2266 break; 2267 } 2268 #ifdef WPI_DEBUG 2269 case WPI_BEACON_SENT: 2270 { 2271 struct wpi_tx_stat *stat = 2272 (struct wpi_tx_stat *)(desc + 1); 2273 uint64_t *tsf = (uint64_t *)(stat + 1); 2274 uint32_t *mode = (uint32_t *)(tsf + 1); 2275 2276 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2277 BUS_DMASYNC_POSTREAD); 2278 2279 DPRINTF(sc, WPI_DEBUG_BEACON, 2280 "beacon sent: rts %u, ack %u, btkill %u, rate %u, " 2281 "duration %u, status %x, tsf %ju, mode %x\n", 2282 stat->rtsfailcnt, stat->ackfailcnt, 2283 stat->btkillcnt, stat->rate, le32toh(stat->duration), 2284 le32toh(stat->status), le64toh(*tsf), 2285 le32toh(*mode)); 2286 2287 break; 2288 } 2289 #endif 2290 case WPI_UC_READY: 2291 { 2292 struct wpi_ucode_info *uc = 2293 (struct wpi_ucode_info *)(desc + 1); 2294 2295 /* The microcontroller is ready. */ 2296 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2297 BUS_DMASYNC_POSTREAD); 2298 DPRINTF(sc, WPI_DEBUG_RESET, 2299 "microcode alive notification version=%d.%d " 2300 "subtype=%x alive=%x\n", uc->major, uc->minor, 2301 uc->subtype, le32toh(uc->valid)); 2302 2303 if (le32toh(uc->valid) != 1) { 2304 device_printf(sc->sc_dev, 2305 "microcontroller initialization failed\n"); 2306 wpi_stop_locked(sc); 2307 return; 2308 } 2309 /* Save the address of the error log in SRAM. */ 2310 sc->errptr = le32toh(uc->errptr); 2311 break; 2312 } 2313 case WPI_STATE_CHANGED: 2314 { 2315 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2316 BUS_DMASYNC_POSTREAD); 2317 2318 uint32_t *status = (uint32_t *)(desc + 1); 2319 2320 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2321 le32toh(*status)); 2322 2323 if (le32toh(*status) & 1) { 2324 WPI_NT_LOCK(sc); 2325 wpi_clear_node_table(sc); 2326 WPI_NT_UNLOCK(sc); 2327 ieee80211_runtask(ic, 2328 &sc->sc_radiooff_task); 2329 return; 2330 } 2331 break; 2332 } 2333 #ifdef WPI_DEBUG 2334 case WPI_START_SCAN: 2335 { 2336 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2337 BUS_DMASYNC_POSTREAD); 2338 2339 struct wpi_start_scan *scan = 2340 (struct wpi_start_scan *)(desc + 1); 2341 DPRINTF(sc, WPI_DEBUG_SCAN, 2342 "%s: scanning channel %d status %x\n", 2343 __func__, scan->chan, le32toh(scan->status)); 2344 2345 break; 2346 } 2347 #endif 2348 case WPI_STOP_SCAN: 2349 { 2350 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2351 BUS_DMASYNC_POSTREAD); 2352 2353 struct wpi_stop_scan *scan = 2354 (struct wpi_stop_scan *)(desc + 1); 2355 2356 DPRINTF(sc, WPI_DEBUG_SCAN, 2357 "scan finished nchan=%d status=%d chan=%d\n", 2358 scan->nchan, scan->status, scan->chan); 2359 2360 WPI_RXON_LOCK(sc); 2361 callout_stop(&sc->scan_timeout); 2362 WPI_RXON_UNLOCK(sc); 2363 if (scan->status == WPI_SCAN_ABORTED) 2364 ieee80211_cancel_scan(vap); 2365 else 2366 ieee80211_scan_next(vap); 2367 break; 2368 } 2369 } 2370 2371 if (sc->rxq.cur % 8 == 0) { 2372 /* Tell the firmware what we have processed. */ 2373 sc->sc_update_rx_ring(sc); 2374 } 2375 } 2376 } 2377 2378 /* 2379 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2380 * from power-down sleep mode. 2381 */ 2382 static void 2383 wpi_wakeup_intr(struct wpi_softc *sc) 2384 { 2385 int qid; 2386 2387 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2388 "%s: ucode wakeup from power-down sleep\n", __func__); 2389 2390 /* Wakeup RX and TX rings. */ 2391 if (sc->rxq.update) { 2392 sc->rxq.update = 0; 2393 wpi_update_rx_ring(sc); 2394 } 2395 WPI_TXQ_LOCK(sc); 2396 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) { 2397 struct wpi_tx_ring *ring = &sc->txq[qid]; 2398 2399 if (ring->update) { 2400 ring->update = 0; 2401 wpi_update_tx_ring(sc, ring); 2402 } 2403 } 2404 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2405 WPI_TXQ_UNLOCK(sc); 2406 } 2407 2408 /* 2409 * This function prints firmware registers 2410 */ 2411 #ifdef WPI_DEBUG 2412 static void 2413 wpi_debug_registers(struct wpi_softc *sc) 2414 { 2415 size_t i; 2416 static const uint32_t csr_tbl[] = { 2417 WPI_HW_IF_CONFIG, 2418 WPI_INT, 2419 WPI_INT_MASK, 2420 WPI_FH_INT, 2421 WPI_GPIO_IN, 2422 WPI_RESET, 2423 WPI_GP_CNTRL, 2424 WPI_EEPROM, 2425 WPI_EEPROM_GP, 2426 WPI_GIO, 2427 WPI_UCODE_GP1, 2428 WPI_UCODE_GP2, 2429 WPI_GIO_CHICKEN, 2430 WPI_ANA_PLL, 2431 WPI_DBG_HPET_MEM, 2432 }; 2433 static const uint32_t prph_tbl[] = { 2434 WPI_APMG_CLK_CTRL, 2435 WPI_APMG_PS, 2436 WPI_APMG_PCI_STT, 2437 WPI_APMG_RFKILL, 2438 }; 2439 2440 DPRINTF(sc, WPI_DEBUG_REGISTER,"%s","\n"); 2441 2442 for (i = 0; i < nitems(csr_tbl); i++) { 2443 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2444 wpi_get_csr_string(csr_tbl[i]), WPI_READ(sc, csr_tbl[i])); 2445 2446 if ((i + 1) % 2 == 0) 2447 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2448 } 2449 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n\n"); 2450 2451 if (wpi_nic_lock(sc) == 0) { 2452 for (i = 0; i < nitems(prph_tbl); i++) { 2453 DPRINTF(sc, WPI_DEBUG_REGISTER, " %-18s: 0x%08x ", 2454 wpi_get_prph_string(prph_tbl[i]), 2455 wpi_prph_read(sc, prph_tbl[i])); 2456 2457 if ((i + 1) % 2 == 0) 2458 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2459 } 2460 DPRINTF(sc, WPI_DEBUG_REGISTER, "\n"); 2461 wpi_nic_unlock(sc); 2462 } else { 2463 DPRINTF(sc, WPI_DEBUG_REGISTER, 2464 "Cannot access internal registers.\n"); 2465 } 2466 } 2467 #endif 2468 2469 /* 2470 * Dump the error log of the firmware when a firmware panic occurs. Although 2471 * we can't debug the firmware because it is neither open source nor free, it 2472 * can help us to identify certain classes of problems. 2473 */ 2474 static void 2475 wpi_fatal_intr(struct wpi_softc *sc) 2476 { 2477 struct wpi_fw_dump dump; 2478 uint32_t i, offset, count; 2479 2480 /* Check that the error log address is valid. */ 2481 if (sc->errptr < WPI_FW_DATA_BASE || 2482 sc->errptr + sizeof (dump) > 2483 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2484 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2485 sc->errptr); 2486 return; 2487 } 2488 if (wpi_nic_lock(sc) != 0) { 2489 printf("%s: could not read firmware error log\n", __func__); 2490 return; 2491 } 2492 /* Read number of entries in the log. */ 2493 count = wpi_mem_read(sc, sc->errptr); 2494 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2495 printf("%s: invalid count field (count = %u)\n", __func__, 2496 count); 2497 wpi_nic_unlock(sc); 2498 return; 2499 } 2500 /* Skip "count" field. */ 2501 offset = sc->errptr + sizeof (uint32_t); 2502 printf("firmware error log (count = %u):\n", count); 2503 for (i = 0; i < count; i++) { 2504 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2505 sizeof (dump) / sizeof (uint32_t)); 2506 2507 printf(" error type = \"%s\" (0x%08X)\n", 2508 (dump.desc < nitems(wpi_fw_errmsg)) ? 2509 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2510 dump.desc); 2511 printf(" error data = 0x%08X\n", 2512 dump.data); 2513 printf(" branch link = 0x%08X%08X\n", 2514 dump.blink[0], dump.blink[1]); 2515 printf(" interrupt link = 0x%08X%08X\n", 2516 dump.ilink[0], dump.ilink[1]); 2517 printf(" time = %u\n", dump.time); 2518 2519 offset += sizeof (dump); 2520 } 2521 wpi_nic_unlock(sc); 2522 /* Dump driver status (TX and RX rings) while we're here. */ 2523 printf("driver status:\n"); 2524 WPI_TXQ_LOCK(sc); 2525 for (i = 0; i < WPI_DRV_NTXQUEUES; i++) { 2526 struct wpi_tx_ring *ring = &sc->txq[i]; 2527 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2528 i, ring->qid, ring->cur, ring->queued); 2529 } 2530 WPI_TXQ_UNLOCK(sc); 2531 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2532 } 2533 2534 static void 2535 wpi_intr(void *arg) 2536 { 2537 struct wpi_softc *sc = arg; 2538 uint32_t r1, r2; 2539 2540 WPI_LOCK(sc); 2541 2542 /* Disable interrupts. */ 2543 WPI_WRITE(sc, WPI_INT_MASK, 0); 2544 2545 r1 = WPI_READ(sc, WPI_INT); 2546 2547 if (__predict_false(r1 == 0xffffffff || 2548 (r1 & 0xfffffff0) == 0xa5a5a5a0)) 2549 goto end; /* Hardware gone! */ 2550 2551 r2 = WPI_READ(sc, WPI_FH_INT); 2552 2553 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2554 r1, r2); 2555 2556 if (r1 == 0 && r2 == 0) 2557 goto done; /* Interrupt not for us. */ 2558 2559 /* Acknowledge interrupts. */ 2560 WPI_WRITE(sc, WPI_INT, r1); 2561 WPI_WRITE(sc, WPI_FH_INT, r2); 2562 2563 if (__predict_false(r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR))) { 2564 struct ieee80211com *ic = &sc->sc_ic; 2565 2566 device_printf(sc->sc_dev, "fatal firmware error\n"); 2567 #ifdef WPI_DEBUG 2568 wpi_debug_registers(sc); 2569 #endif 2570 wpi_fatal_intr(sc); 2571 DPRINTF(sc, WPI_DEBUG_HW, 2572 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2573 "(Hardware Error)"); 2574 ieee80211_restart_all(ic); 2575 goto end; 2576 } 2577 2578 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2579 (r2 & WPI_FH_INT_RX)) 2580 wpi_notif_intr(sc); 2581 2582 if (r1 & WPI_INT_ALIVE) 2583 wakeup(sc); /* Firmware is alive. */ 2584 2585 if (r1 & WPI_INT_WAKEUP) 2586 wpi_wakeup_intr(sc); 2587 2588 done: 2589 /* Re-enable interrupts. */ 2590 if (__predict_true(sc->sc_running)) 2591 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2592 2593 end: WPI_UNLOCK(sc); 2594 } 2595 2596 static void 2597 wpi_free_txfrags(struct wpi_softc *sc, uint16_t ac) 2598 { 2599 struct wpi_tx_ring *ring; 2600 struct wpi_tx_data *data; 2601 uint8_t cur; 2602 2603 WPI_TXQ_LOCK(sc); 2604 ring = &sc->txq[ac]; 2605 2606 while (ring->pending != 0) { 2607 ring->pending--; 2608 cur = (ring->cur + ring->pending) % WPI_TX_RING_COUNT; 2609 data = &ring->data[cur]; 2610 2611 bus_dmamap_sync(ring->data_dmat, data->map, 2612 BUS_DMASYNC_POSTWRITE); 2613 bus_dmamap_unload(ring->data_dmat, data->map); 2614 m_freem(data->m); 2615 data->m = NULL; 2616 2617 ieee80211_node_decref(data->ni); 2618 data->ni = NULL; 2619 } 2620 2621 WPI_TXQ_UNLOCK(sc); 2622 } 2623 2624 static int 2625 wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2626 { 2627 struct ieee80211_frame *wh; 2628 struct wpi_tx_cmd *cmd; 2629 struct wpi_tx_data *data; 2630 struct wpi_tx_desc *desc; 2631 struct wpi_tx_ring *ring; 2632 struct mbuf *m1; 2633 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2634 uint8_t cur, pad; 2635 uint16_t hdrlen; 2636 int error, i, nsegs, totlen, frag; 2637 2638 WPI_TXQ_LOCK(sc); 2639 2640 KASSERT(buf->size <= sizeof(buf->data), ("buffer overflow")); 2641 2642 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2643 2644 if (__predict_false(sc->sc_running == 0)) { 2645 /* wpi_stop() was called */ 2646 error = ENETDOWN; 2647 goto end; 2648 } 2649 2650 wh = mtod(buf->m, struct ieee80211_frame *); 2651 hdrlen = ieee80211_anyhdrsize(wh); 2652 totlen = buf->m->m_pkthdr.len; 2653 frag = ((buf->m->m_flags & (M_FRAG | M_LASTFRAG)) == M_FRAG); 2654 2655 if (__predict_false(totlen < sizeof(struct ieee80211_frame_min))) { 2656 error = EINVAL; 2657 goto end; 2658 } 2659 2660 if (hdrlen & 3) { 2661 /* First segment length must be a multiple of 4. */ 2662 pad = 4 - (hdrlen & 3); 2663 } else 2664 pad = 0; 2665 2666 ring = &sc->txq[buf->ac]; 2667 cur = (ring->cur + ring->pending) % WPI_TX_RING_COUNT; 2668 desc = &ring->desc[cur]; 2669 data = &ring->data[cur]; 2670 2671 /* Prepare TX firmware command. */ 2672 cmd = &ring->cmd[cur]; 2673 cmd->code = buf->code; 2674 cmd->flags = 0; 2675 cmd->qid = ring->qid; 2676 cmd->idx = cur; 2677 2678 memcpy(cmd->data, buf->data, buf->size); 2679 2680 /* Save and trim IEEE802.11 header. */ 2681 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrlen); 2682 m_adj(buf->m, hdrlen); 2683 2684 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2685 segs, &nsegs, BUS_DMA_NOWAIT); 2686 if (error != 0 && error != EFBIG) { 2687 device_printf(sc->sc_dev, 2688 "%s: can't map mbuf (error %d)\n", __func__, error); 2689 goto end; 2690 } 2691 if (error != 0) { 2692 /* Too many DMA segments, linearize mbuf. */ 2693 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER - 1); 2694 if (m1 == NULL) { 2695 device_printf(sc->sc_dev, 2696 "%s: could not defrag mbuf\n", __func__); 2697 error = ENOBUFS; 2698 goto end; 2699 } 2700 buf->m = m1; 2701 2702 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2703 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2704 if (__predict_false(error != 0)) { 2705 /* XXX fix this (applicable to the iwn(4) too) */ 2706 /* 2707 * NB: Do not return error; 2708 * original mbuf does not exist anymore. 2709 */ 2710 device_printf(sc->sc_dev, 2711 "%s: can't map mbuf (error %d)\n", __func__, 2712 error); 2713 if (ring->qid < WPI_CMD_QUEUE_NUM) { 2714 if_inc_counter(buf->ni->ni_vap->iv_ifp, 2715 IFCOUNTER_OERRORS, 1); 2716 if (!frag) 2717 ieee80211_free_node(buf->ni); 2718 } 2719 m_freem(buf->m); 2720 error = 0; 2721 goto end; 2722 } 2723 } 2724 2725 KASSERT(nsegs < WPI_MAX_SCATTER, 2726 ("too many DMA segments, nsegs (%d) should be less than %d", 2727 nsegs, WPI_MAX_SCATTER)); 2728 2729 data->m = buf->m; 2730 data->ni = buf->ni; 2731 data->hdrlen = hdrlen; 2732 2733 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2734 __func__, ring->qid, cur, totlen, nsegs); 2735 2736 /* Fill TX descriptor. */ 2737 desc->nsegs = WPI_PAD32(totlen + pad) << 4 | (1 + nsegs); 2738 /* First DMA segment is used by the TX command. */ 2739 desc->segs[0].addr = htole32(data->cmd_paddr); 2740 desc->segs[0].len = htole32(4 + buf->size + hdrlen + pad); 2741 /* Other DMA segments are for data payload. */ 2742 seg = &segs[0]; 2743 for (i = 1; i <= nsegs; i++) { 2744 desc->segs[i].addr = htole32(seg->ds_addr); 2745 desc->segs[i].len = htole32(seg->ds_len); 2746 seg++; 2747 } 2748 2749 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2750 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2751 BUS_DMASYNC_PREWRITE); 2752 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2753 BUS_DMASYNC_PREWRITE); 2754 2755 ring->pending += 1; 2756 2757 if (!frag) { 2758 if (ring->qid < WPI_CMD_QUEUE_NUM) { 2759 WPI_TXQ_STATE_LOCK(sc); 2760 ring->queued += ring->pending; 2761 callout_reset(&sc->tx_timeout, 5*hz, wpi_tx_timeout, 2762 sc); 2763 WPI_TXQ_STATE_UNLOCK(sc); 2764 } 2765 2766 /* Kick TX ring. */ 2767 ring->cur = (ring->cur + ring->pending) % WPI_TX_RING_COUNT; 2768 ring->pending = 0; 2769 sc->sc_update_tx_ring(sc, ring); 2770 } else 2771 ieee80211_node_incref(data->ni); 2772 2773 end: DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 2774 __func__); 2775 2776 WPI_TXQ_UNLOCK(sc); 2777 2778 return (error); 2779 } 2780 2781 /* 2782 * Construct the data packet for a transmit buffer. 2783 */ 2784 static int 2785 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2786 { 2787 const struct ieee80211_txparam *tp = ni->ni_txparms; 2788 struct ieee80211vap *vap = ni->ni_vap; 2789 struct ieee80211com *ic = ni->ni_ic; 2790 struct wpi_node *wn = WPI_NODE(ni); 2791 struct ieee80211_frame *wh; 2792 struct ieee80211_key *k = NULL; 2793 struct wpi_buf tx_data; 2794 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2795 uint32_t flags; 2796 uint16_t ac, qos; 2797 uint8_t tid, type, rate; 2798 int swcrypt, ismcast, totlen; 2799 2800 wh = mtod(m, struct ieee80211_frame *); 2801 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2802 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2803 swcrypt = 1; 2804 2805 /* Select EDCA Access Category and TX ring for this frame. */ 2806 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2807 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2808 tid = qos & IEEE80211_QOS_TID; 2809 } else { 2810 qos = 0; 2811 tid = 0; 2812 } 2813 ac = M_WME_GETAC(m); 2814 2815 /* Choose a TX rate index. */ 2816 if (type == IEEE80211_FC0_TYPE_MGT || 2817 type == IEEE80211_FC0_TYPE_CTL || 2818 (m->m_flags & M_EAPOL) != 0) 2819 rate = tp->mgmtrate; 2820 else if (ismcast) 2821 rate = tp->mcastrate; 2822 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2823 rate = tp->ucastrate; 2824 else { 2825 /* XXX pass pktlen */ 2826 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2827 rate = ni->ni_txrate; 2828 } 2829 2830 /* Encrypt the frame if need be. */ 2831 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2832 /* Retrieve key for TX. */ 2833 k = ieee80211_crypto_encap(ni, m); 2834 if (k == NULL) 2835 return (ENOBUFS); 2836 2837 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2838 2839 /* 802.11 header may have moved. */ 2840 wh = mtod(m, struct ieee80211_frame *); 2841 } 2842 totlen = m->m_pkthdr.len; 2843 2844 if (ieee80211_radiotap_active_vap(vap)) { 2845 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2846 2847 tap->wt_flags = 0; 2848 tap->wt_rate = rate; 2849 if (k != NULL) 2850 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2851 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2852 tap->wt_flags |= IEEE80211_RADIOTAP_F_FRAG; 2853 2854 ieee80211_radiotap_tx(vap, m); 2855 } 2856 2857 flags = 0; 2858 if (!ismcast) { 2859 /* Unicast frame, check if an ACK is expected. */ 2860 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2861 IEEE80211_QOS_ACKPOLICY_NOACK) 2862 flags |= WPI_TX_NEED_ACK; 2863 } 2864 2865 if (!IEEE80211_QOS_HAS_SEQ(wh)) 2866 flags |= WPI_TX_AUTO_SEQ; 2867 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2868 flags |= WPI_TX_MORE_FRAG; 2869 2870 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2871 if (!ismcast) { 2872 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2873 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2874 flags |= WPI_TX_NEED_RTS; 2875 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2876 WPI_RATE_IS_OFDM(rate)) { 2877 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2878 flags |= WPI_TX_NEED_CTS; 2879 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2880 flags |= WPI_TX_NEED_RTS; 2881 } 2882 2883 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2884 flags |= WPI_TX_FULL_TXOP; 2885 } 2886 2887 memset(tx, 0, sizeof (struct wpi_cmd_data)); 2888 if (type == IEEE80211_FC0_TYPE_MGT) { 2889 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2890 2891 /* Tell HW to set timestamp in probe responses. */ 2892 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2893 flags |= WPI_TX_INSERT_TSTAMP; 2894 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2895 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2896 tx->timeout = htole16(3); 2897 else 2898 tx->timeout = htole16(2); 2899 } 2900 2901 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2902 tx->id = WPI_ID_BROADCAST; 2903 else { 2904 if (wn->id == WPI_ID_UNDEFINED) { 2905 device_printf(sc->sc_dev, 2906 "%s: undefined node id\n", __func__); 2907 return (EINVAL); 2908 } 2909 2910 tx->id = wn->id; 2911 } 2912 2913 if (!swcrypt) { 2914 switch (k->wk_cipher->ic_cipher) { 2915 case IEEE80211_CIPHER_AES_CCM: 2916 tx->security = WPI_CIPHER_CCMP; 2917 break; 2918 2919 default: 2920 break; 2921 } 2922 2923 memcpy(tx->key, k->wk_key, k->wk_keylen); 2924 } 2925 2926 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) { 2927 struct mbuf *next = m->m_nextpkt; 2928 2929 tx->lnext = htole16(next->m_pkthdr.len); 2930 tx->fnext = htole32(tx->security | 2931 (flags & WPI_TX_NEED_ACK) | 2932 WPI_NEXT_STA_ID(tx->id)); 2933 } 2934 2935 tx->len = htole16(totlen); 2936 tx->flags = htole32(flags); 2937 tx->plcp = rate2plcp(rate); 2938 tx->tid = tid; 2939 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2940 tx->ofdm_mask = 0xff; 2941 tx->cck_mask = 0x0f; 2942 tx->rts_ntries = 7; 2943 tx->data_ntries = tp->maxretry; 2944 2945 tx_data.ni = ni; 2946 tx_data.m = m; 2947 tx_data.size = sizeof(struct wpi_cmd_data); 2948 tx_data.code = WPI_CMD_TX_DATA; 2949 tx_data.ac = ac; 2950 2951 return wpi_cmd2(sc, &tx_data); 2952 } 2953 2954 static int 2955 wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, 2956 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 2957 { 2958 struct ieee80211vap *vap = ni->ni_vap; 2959 struct ieee80211_key *k = NULL; 2960 struct ieee80211_frame *wh; 2961 struct wpi_buf tx_data; 2962 struct wpi_cmd_data *tx = (struct wpi_cmd_data *)&tx_data.data; 2963 uint32_t flags; 2964 uint8_t ac, type, rate; 2965 int swcrypt, totlen; 2966 2967 wh = mtod(m, struct ieee80211_frame *); 2968 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2969 swcrypt = 1; 2970 2971 ac = params->ibp_pri & 3; 2972 2973 /* Choose a TX rate index. */ 2974 rate = params->ibp_rate0; 2975 2976 flags = 0; 2977 if (!IEEE80211_QOS_HAS_SEQ(wh)) 2978 flags |= WPI_TX_AUTO_SEQ; 2979 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2980 flags |= WPI_TX_NEED_ACK; 2981 if (params->ibp_flags & IEEE80211_BPF_RTS) 2982 flags |= WPI_TX_NEED_RTS; 2983 if (params->ibp_flags & IEEE80211_BPF_CTS) 2984 flags |= WPI_TX_NEED_CTS; 2985 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2986 flags |= WPI_TX_FULL_TXOP; 2987 2988 /* Encrypt the frame if need be. */ 2989 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) { 2990 /* Retrieve key for TX. */ 2991 k = ieee80211_crypto_encap(ni, m); 2992 if (k == NULL) 2993 return (ENOBUFS); 2994 2995 swcrypt = k->wk_flags & IEEE80211_KEY_SWCRYPT; 2996 2997 /* 802.11 header may have moved. */ 2998 wh = mtod(m, struct ieee80211_frame *); 2999 } 3000 totlen = m->m_pkthdr.len; 3001 3002 if (ieee80211_radiotap_active_vap(vap)) { 3003 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 3004 3005 tap->wt_flags = 0; 3006 tap->wt_rate = rate; 3007 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) 3008 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 3009 3010 ieee80211_radiotap_tx(vap, m); 3011 } 3012 3013 memset(tx, 0, sizeof (struct wpi_cmd_data)); 3014 if (type == IEEE80211_FC0_TYPE_MGT) { 3015 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 3016 3017 /* Tell HW to set timestamp in probe responses. */ 3018 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 3019 flags |= WPI_TX_INSERT_TSTAMP; 3020 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 3021 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 3022 tx->timeout = htole16(3); 3023 else 3024 tx->timeout = htole16(2); 3025 } 3026 3027 if (!swcrypt) { 3028 switch (k->wk_cipher->ic_cipher) { 3029 case IEEE80211_CIPHER_AES_CCM: 3030 tx->security = WPI_CIPHER_CCMP; 3031 break; 3032 3033 default: 3034 break; 3035 } 3036 3037 memcpy(tx->key, k->wk_key, k->wk_keylen); 3038 } 3039 3040 tx->len = htole16(totlen); 3041 tx->flags = htole32(flags); 3042 tx->plcp = rate2plcp(rate); 3043 tx->id = WPI_ID_BROADCAST; 3044 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 3045 tx->rts_ntries = params->ibp_try1; 3046 tx->data_ntries = params->ibp_try0; 3047 3048 tx_data.ni = ni; 3049 tx_data.m = m; 3050 tx_data.size = sizeof(struct wpi_cmd_data); 3051 tx_data.code = WPI_CMD_TX_DATA; 3052 tx_data.ac = ac; 3053 3054 return wpi_cmd2(sc, &tx_data); 3055 } 3056 3057 static __inline int 3058 wpi_tx_ring_free_space(struct wpi_softc *sc, uint16_t ac) 3059 { 3060 struct wpi_tx_ring *ring = &sc->txq[ac]; 3061 int retval; 3062 3063 WPI_TXQ_STATE_LOCK(sc); 3064 retval = WPI_TX_RING_HIMARK - ring->queued; 3065 WPI_TXQ_STATE_UNLOCK(sc); 3066 3067 return retval; 3068 } 3069 3070 static int 3071 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 3072 const struct ieee80211_bpf_params *params) 3073 { 3074 struct ieee80211com *ic = ni->ni_ic; 3075 struct wpi_softc *sc = ic->ic_softc; 3076 uint16_t ac; 3077 int error = 0; 3078 3079 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3080 3081 ac = M_WME_GETAC(m); 3082 3083 WPI_TX_LOCK(sc); 3084 3085 /* NB: no fragments here */ 3086 if (sc->sc_running == 0 || wpi_tx_ring_free_space(sc, ac) < 1) { 3087 error = sc->sc_running ? ENOBUFS : ENETDOWN; 3088 goto unlock; 3089 } 3090 3091 if (params == NULL) { 3092 /* 3093 * Legacy path; interpret frame contents to decide 3094 * precisely how to send the frame. 3095 */ 3096 error = wpi_tx_data(sc, m, ni); 3097 } else { 3098 /* 3099 * Caller supplied explicit parameters to use in 3100 * sending the frame. 3101 */ 3102 error = wpi_tx_data_raw(sc, m, ni, params); 3103 } 3104 3105 unlock: WPI_TX_UNLOCK(sc); 3106 3107 if (error != 0) { 3108 m_freem(m); 3109 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3110 3111 return error; 3112 } 3113 3114 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3115 3116 return 0; 3117 } 3118 3119 static int 3120 wpi_transmit(struct ieee80211com *ic, struct mbuf *m) 3121 { 3122 struct wpi_softc *sc = ic->ic_softc; 3123 struct ieee80211_node *ni; 3124 struct mbuf *mnext; 3125 uint16_t ac; 3126 int error, nmbufs; 3127 3128 WPI_TX_LOCK(sc); 3129 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 3130 3131 /* Check if interface is up & running. */ 3132 if (__predict_false(sc->sc_running == 0)) { 3133 error = ENXIO; 3134 goto unlock; 3135 } 3136 3137 nmbufs = 1; 3138 for (mnext = m->m_nextpkt; mnext != NULL; mnext = mnext->m_nextpkt) 3139 nmbufs++; 3140 3141 /* Check for available space. */ 3142 ac = M_WME_GETAC(m); 3143 if (wpi_tx_ring_free_space(sc, ac) < nmbufs) { 3144 error = ENOBUFS; 3145 goto unlock; 3146 } 3147 3148 error = 0; 3149 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 3150 do { 3151 mnext = m->m_nextpkt; 3152 if (wpi_tx_data(sc, m, ni) != 0) { 3153 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 3154 nmbufs); 3155 wpi_free_txfrags(sc, ac); 3156 ieee80211_free_mbuf(m); 3157 ieee80211_free_node(ni); 3158 break; 3159 } 3160 } while((m = mnext) != NULL); 3161 3162 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 3163 3164 unlock: WPI_TX_UNLOCK(sc); 3165 3166 return (error); 3167 } 3168 3169 static void 3170 wpi_watchdog_rfkill(void *arg) 3171 { 3172 struct wpi_softc *sc = arg; 3173 struct ieee80211com *ic = &sc->sc_ic; 3174 3175 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n"); 3176 3177 /* No need to lock firmware memory. */ 3178 if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) { 3179 /* Radio kill switch is still off. */ 3180 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 3181 sc); 3182 } else 3183 ieee80211_runtask(ic, &sc->sc_radioon_task); 3184 } 3185 3186 static void 3187 wpi_scan_timeout(void *arg) 3188 { 3189 struct wpi_softc *sc = arg; 3190 struct ieee80211com *ic = &sc->sc_ic; 3191 3192 ic_printf(ic, "scan timeout\n"); 3193 ieee80211_restart_all(ic); 3194 } 3195 3196 static void 3197 wpi_tx_timeout(void *arg) 3198 { 3199 struct wpi_softc *sc = arg; 3200 struct ieee80211com *ic = &sc->sc_ic; 3201 3202 ic_printf(ic, "device timeout\n"); 3203 ieee80211_restart_all(ic); 3204 } 3205 3206 static void 3207 wpi_parent(struct ieee80211com *ic) 3208 { 3209 struct wpi_softc *sc = ic->ic_softc; 3210 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3211 3212 if (ic->ic_nrunning > 0) { 3213 if (wpi_init(sc) == 0) { 3214 ieee80211_notify_radio(ic, 1); 3215 ieee80211_start_all(ic); 3216 } else { 3217 ieee80211_notify_radio(ic, 0); 3218 ieee80211_stop(vap); 3219 } 3220 } else { 3221 ieee80211_notify_radio(ic, 0); 3222 wpi_stop(sc); 3223 } 3224 } 3225 3226 /* 3227 * Send a command to the firmware. 3228 */ 3229 static int 3230 wpi_cmd(struct wpi_softc *sc, uint8_t code, const void *buf, uint16_t size, 3231 int async) 3232 { 3233 struct wpi_tx_ring *ring = &sc->txq[WPI_CMD_QUEUE_NUM]; 3234 struct wpi_tx_desc *desc; 3235 struct wpi_tx_data *data; 3236 struct wpi_tx_cmd *cmd; 3237 struct mbuf *m; 3238 bus_addr_t paddr; 3239 uint16_t totlen; 3240 int error; 3241 3242 WPI_TXQ_LOCK(sc); 3243 3244 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3245 3246 if (__predict_false(sc->sc_running == 0)) { 3247 /* wpi_stop() was called */ 3248 if (code == WPI_CMD_SCAN) 3249 error = ENETDOWN; 3250 else 3251 error = 0; 3252 3253 goto fail; 3254 } 3255 3256 if (async == 0) 3257 WPI_LOCK_ASSERT(sc); 3258 3259 DPRINTF(sc, WPI_DEBUG_CMD, "%s: cmd %s size %u async %d\n", 3260 __func__, wpi_cmd_str(code), size, async); 3261 3262 desc = &ring->desc[ring->cur]; 3263 data = &ring->data[ring->cur]; 3264 totlen = 4 + size; 3265 3266 if (size > sizeof cmd->data) { 3267 /* Command is too large to fit in a descriptor. */ 3268 if (totlen > MCLBYTES) { 3269 error = EINVAL; 3270 goto fail; 3271 } 3272 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 3273 if (m == NULL) { 3274 error = ENOMEM; 3275 goto fail; 3276 } 3277 cmd = mtod(m, struct wpi_tx_cmd *); 3278 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 3279 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 3280 if (error != 0) { 3281 m_freem(m); 3282 goto fail; 3283 } 3284 data->m = m; 3285 } else { 3286 cmd = &ring->cmd[ring->cur]; 3287 paddr = data->cmd_paddr; 3288 } 3289 3290 cmd->code = code; 3291 cmd->flags = 0; 3292 cmd->qid = ring->qid; 3293 cmd->idx = ring->cur; 3294 memcpy(cmd->data, buf, size); 3295 3296 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 3297 desc->segs[0].addr = htole32(paddr); 3298 desc->segs[0].len = htole32(totlen); 3299 3300 if (size > sizeof cmd->data) { 3301 bus_dmamap_sync(ring->data_dmat, data->map, 3302 BUS_DMASYNC_PREWRITE); 3303 } else { 3304 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 3305 BUS_DMASYNC_PREWRITE); 3306 } 3307 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 3308 BUS_DMASYNC_PREWRITE); 3309 3310 /* Kick command ring. */ 3311 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 3312 sc->sc_update_tx_ring(sc, ring); 3313 3314 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3315 3316 WPI_TXQ_UNLOCK(sc); 3317 3318 return async ? 0 : mtx_sleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 3319 3320 fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 3321 3322 WPI_TXQ_UNLOCK(sc); 3323 3324 return error; 3325 } 3326 3327 /* 3328 * Configure HW multi-rate retries. 3329 */ 3330 static int 3331 wpi_mrr_setup(struct wpi_softc *sc) 3332 { 3333 struct ieee80211com *ic = &sc->sc_ic; 3334 struct wpi_mrr_setup mrr; 3335 uint8_t i; 3336 int error; 3337 3338 /* CCK rates (not used with 802.11a). */ 3339 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 3340 mrr.rates[i].flags = 0; 3341 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3342 /* Fallback to the immediate lower CCK rate (if any.) */ 3343 mrr.rates[i].next = 3344 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 3345 /* Try twice at this rate before falling back to "next". */ 3346 mrr.rates[i].ntries = WPI_NTRIES_DEFAULT; 3347 } 3348 /* OFDM rates (not used with 802.11b). */ 3349 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 3350 mrr.rates[i].flags = 0; 3351 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 3352 /* Fallback to the immediate lower rate (if any.) */ 3353 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 3354 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 3355 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 3356 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 3357 i - 1; 3358 /* Try twice at this rate before falling back to "next". */ 3359 mrr.rates[i].ntries = WPI_NTRIES_DEFAULT; 3360 } 3361 /* Setup MRR for control frames. */ 3362 mrr.which = htole32(WPI_MRR_CTL); 3363 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3364 if (error != 0) { 3365 device_printf(sc->sc_dev, 3366 "could not setup MRR for control frames\n"); 3367 return error; 3368 } 3369 /* Setup MRR for data frames. */ 3370 mrr.which = htole32(WPI_MRR_DATA); 3371 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 3372 if (error != 0) { 3373 device_printf(sc->sc_dev, 3374 "could not setup MRR for data frames\n"); 3375 return error; 3376 } 3377 return 0; 3378 } 3379 3380 static int 3381 wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3382 { 3383 struct ieee80211com *ic = ni->ni_ic; 3384 struct wpi_vap *wvp = WPI_VAP(ni->ni_vap); 3385 struct wpi_node *wn = WPI_NODE(ni); 3386 struct wpi_node_info node; 3387 int error; 3388 3389 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3390 3391 if (wn->id == WPI_ID_UNDEFINED) 3392 return EINVAL; 3393 3394 memset(&node, 0, sizeof node); 3395 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3396 node.id = wn->id; 3397 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3398 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3399 node.action = htole32(WPI_ACTION_SET_RATE); 3400 node.antenna = WPI_ANTENNA_BOTH; 3401 3402 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding node %d (%s)\n", __func__, 3403 wn->id, ether_sprintf(ni->ni_macaddr)); 3404 3405 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 3406 if (error != 0) { 3407 device_printf(sc->sc_dev, 3408 "%s: wpi_cmd() call failed with error code %d\n", __func__, 3409 error); 3410 return error; 3411 } 3412 3413 if (wvp->wv_gtk != 0) { 3414 error = wpi_set_global_keys(ni); 3415 if (error != 0) { 3416 device_printf(sc->sc_dev, 3417 "%s: error while setting global keys\n", __func__); 3418 return ENXIO; 3419 } 3420 } 3421 3422 return 0; 3423 } 3424 3425 /* 3426 * Broadcast node is used to send group-addressed and management frames. 3427 */ 3428 static int 3429 wpi_add_broadcast_node(struct wpi_softc *sc, int async) 3430 { 3431 struct ieee80211com *ic = &sc->sc_ic; 3432 struct wpi_node_info node; 3433 3434 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3435 3436 memset(&node, 0, sizeof node); 3437 IEEE80211_ADDR_COPY(node.macaddr, ieee80211broadcastaddr); 3438 node.id = WPI_ID_BROADCAST; 3439 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3440 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3441 node.action = htole32(WPI_ACTION_SET_RATE); 3442 node.antenna = WPI_ANTENNA_BOTH; 3443 3444 DPRINTF(sc, WPI_DEBUG_NODE, "%s: adding broadcast node\n", __func__); 3445 3446 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 3447 } 3448 3449 static int 3450 wpi_add_sta_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3451 { 3452 struct wpi_node *wn = WPI_NODE(ni); 3453 int error; 3454 3455 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3456 3457 wn->id = wpi_add_node_entry_sta(sc); 3458 3459 if ((error = wpi_add_node(sc, ni)) != 0) { 3460 wpi_del_node_entry(sc, wn->id); 3461 wn->id = WPI_ID_UNDEFINED; 3462 return error; 3463 } 3464 3465 return 0; 3466 } 3467 3468 static int 3469 wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3470 { 3471 struct wpi_node *wn = WPI_NODE(ni); 3472 int error; 3473 3474 KASSERT(wn->id == WPI_ID_UNDEFINED, 3475 ("the node %d was added before", wn->id)); 3476 3477 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3478 3479 if ((wn->id = wpi_add_node_entry_adhoc(sc)) == WPI_ID_UNDEFINED) { 3480 device_printf(sc->sc_dev, "%s: h/w table is full\n", __func__); 3481 return ENOMEM; 3482 } 3483 3484 if ((error = wpi_add_node(sc, ni)) != 0) { 3485 wpi_del_node_entry(sc, wn->id); 3486 wn->id = WPI_ID_UNDEFINED; 3487 return error; 3488 } 3489 3490 return 0; 3491 } 3492 3493 static void 3494 wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 3495 { 3496 struct wpi_node *wn = WPI_NODE(ni); 3497 struct wpi_cmd_del_node node; 3498 int error; 3499 3500 KASSERT(wn->id != WPI_ID_UNDEFINED, ("undefined node id passed")); 3501 3502 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3503 3504 memset(&node, 0, sizeof node); 3505 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_macaddr); 3506 node.count = 1; 3507 3508 DPRINTF(sc, WPI_DEBUG_NODE, "%s: deleting node %d (%s)\n", __func__, 3509 wn->id, ether_sprintf(ni->ni_macaddr)); 3510 3511 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3512 if (error != 0) { 3513 device_printf(sc->sc_dev, 3514 "%s: could not delete node %u, error %d\n", __func__, 3515 wn->id, error); 3516 } 3517 } 3518 3519 static int 3520 wpi_updateedca(struct ieee80211com *ic) 3521 { 3522 #define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3523 struct wpi_softc *sc = ic->ic_softc; 3524 struct chanAccParams chp; 3525 struct wpi_edca_params cmd; 3526 int aci, error; 3527 3528 ieee80211_wme_ic_getparams(ic, &chp); 3529 3530 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3531 3532 memset(&cmd, 0, sizeof cmd); 3533 cmd.flags = htole32(WPI_EDCA_UPDATE); 3534 for (aci = 0; aci < WME_NUM_AC; aci++) { 3535 const struct wmeParams *ac = &chp.cap_wmeParams[aci]; 3536 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3537 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3538 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3539 cmd.ac[aci].txoplimit = 3540 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3541 3542 DPRINTF(sc, WPI_DEBUG_EDCA, 3543 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3544 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3545 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3546 cmd.ac[aci].txoplimit); 3547 } 3548 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3549 3550 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3551 3552 return error; 3553 #undef WPI_EXP2 3554 } 3555 3556 static void 3557 wpi_set_promisc(struct wpi_softc *sc) 3558 { 3559 struct ieee80211com *ic = &sc->sc_ic; 3560 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3561 uint32_t promisc_filter; 3562 3563 promisc_filter = WPI_FILTER_CTL; 3564 if (vap != NULL && vap->iv_opmode != IEEE80211_M_HOSTAP) 3565 promisc_filter |= WPI_FILTER_PROMISC; 3566 3567 if (ic->ic_promisc > 0) 3568 sc->rxon.filter |= htole32(promisc_filter); 3569 else 3570 sc->rxon.filter &= ~htole32(promisc_filter); 3571 } 3572 3573 static void 3574 wpi_update_promisc(struct ieee80211com *ic) 3575 { 3576 struct wpi_softc *sc = ic->ic_softc; 3577 3578 WPI_LOCK(sc); 3579 if (sc->sc_running == 0) { 3580 WPI_UNLOCK(sc); 3581 return; 3582 } 3583 WPI_UNLOCK(sc); 3584 3585 WPI_RXON_LOCK(sc); 3586 wpi_set_promisc(sc); 3587 3588 if (wpi_send_rxon(sc, 1, 1) != 0) { 3589 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3590 __func__); 3591 } 3592 WPI_RXON_UNLOCK(sc); 3593 } 3594 3595 static void 3596 wpi_update_mcast(struct ieee80211com *ic) 3597 { 3598 /* Ignore */ 3599 } 3600 3601 static void 3602 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3603 { 3604 struct wpi_cmd_led led; 3605 3606 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3607 3608 led.which = which; 3609 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3610 led.off = off; 3611 led.on = on; 3612 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3613 } 3614 3615 static int 3616 wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3617 { 3618 struct wpi_cmd_timing cmd; 3619 uint64_t val, mod; 3620 3621 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3622 3623 memset(&cmd, 0, sizeof cmd); 3624 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3625 cmd.bintval = htole16(ni->ni_intval); 3626 cmd.lintval = htole16(10); 3627 3628 /* Compute remaining time until next beacon. */ 3629 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3630 mod = le64toh(cmd.tstamp) % val; 3631 cmd.binitval = htole32((uint32_t)(val - mod)); 3632 3633 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3634 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3635 3636 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3637 } 3638 3639 /* 3640 * This function is called periodically (every 60 seconds) to adjust output 3641 * power to temperature changes. 3642 */ 3643 static void 3644 wpi_power_calibration(struct wpi_softc *sc) 3645 { 3646 int temp; 3647 3648 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3649 3650 /* Update sensor data. */ 3651 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3652 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3653 3654 /* Sanity-check read value. */ 3655 if (temp < -260 || temp > 25) { 3656 /* This can't be correct, ignore. */ 3657 DPRINTF(sc, WPI_DEBUG_TEMP, 3658 "out-of-range temperature reported: %d\n", temp); 3659 return; 3660 } 3661 3662 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3663 3664 /* Adjust Tx power if need be. */ 3665 if (abs(temp - sc->temp) <= 6) 3666 return; 3667 3668 sc->temp = temp; 3669 3670 if (wpi_set_txpower(sc, 1) != 0) { 3671 /* just warn, too bad for the automatic calibration... */ 3672 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3673 } 3674 } 3675 3676 /* 3677 * Set TX power for current channel. 3678 */ 3679 static int 3680 wpi_set_txpower(struct wpi_softc *sc, int async) 3681 { 3682 struct wpi_power_group *group; 3683 struct wpi_cmd_txpower cmd; 3684 uint8_t chan; 3685 int idx, is_chan_5ghz, i; 3686 3687 /* Retrieve current channel from last RXON. */ 3688 chan = sc->rxon.chan; 3689 is_chan_5ghz = (sc->rxon.flags & htole32(WPI_RXON_24GHZ)) == 0; 3690 3691 /* Find the TX power group to which this channel belongs. */ 3692 if (is_chan_5ghz) { 3693 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3694 if (chan <= group->chan) 3695 break; 3696 } else 3697 group = &sc->groups[0]; 3698 3699 memset(&cmd, 0, sizeof cmd); 3700 cmd.band = is_chan_5ghz ? WPI_BAND_5GHZ : WPI_BAND_2GHZ; 3701 cmd.chan = htole16(chan); 3702 3703 /* Set TX power for all OFDM and CCK rates. */ 3704 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3705 /* Retrieve TX power for this channel/rate. */ 3706 idx = wpi_get_power_index(sc, group, chan, is_chan_5ghz, i); 3707 3708 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3709 3710 if (is_chan_5ghz) { 3711 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3712 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3713 } else { 3714 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3715 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3716 } 3717 DPRINTF(sc, WPI_DEBUG_TEMP, 3718 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3719 } 3720 3721 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3722 } 3723 3724 /* 3725 * Determine Tx power index for a given channel/rate combination. 3726 * This takes into account the regulatory information from EEPROM and the 3727 * current temperature. 3728 */ 3729 static int 3730 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3731 uint8_t chan, int is_chan_5ghz, int ridx) 3732 { 3733 /* Fixed-point arithmetic division using a n-bit fractional part. */ 3734 #define fdivround(a, b, n) \ 3735 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3736 3737 /* Linear interpolation. */ 3738 #define interpolate(x, x1, y1, x2, y2, n) \ 3739 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3740 3741 struct wpi_power_sample *sample; 3742 int pwr, idx; 3743 3744 /* Default TX power is group maximum TX power minus 3dB. */ 3745 pwr = group->maxpwr / 2; 3746 3747 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3748 switch (ridx) { 3749 case WPI_RIDX_OFDM36: 3750 pwr -= is_chan_5ghz ? 5 : 0; 3751 break; 3752 case WPI_RIDX_OFDM48: 3753 pwr -= is_chan_5ghz ? 10 : 7; 3754 break; 3755 case WPI_RIDX_OFDM54: 3756 pwr -= is_chan_5ghz ? 12 : 9; 3757 break; 3758 } 3759 3760 /* Never exceed the channel maximum allowed TX power. */ 3761 pwr = min(pwr, sc->maxpwr[chan]); 3762 3763 /* Retrieve TX power index into gain tables from samples. */ 3764 for (sample = group->samples; sample < &group->samples[3]; sample++) 3765 if (pwr > sample[1].power) 3766 break; 3767 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3768 idx = interpolate(pwr, sample[0].power, sample[0].index, 3769 sample[1].power, sample[1].index, 19); 3770 3771 /*- 3772 * Adjust power index based on current temperature: 3773 * - if cooler than factory-calibrated: decrease output power 3774 * - if warmer than factory-calibrated: increase output power 3775 */ 3776 idx -= (sc->temp - group->temp) * 11 / 100; 3777 3778 /* Decrease TX power for CCK rates (-5dB). */ 3779 if (ridx >= WPI_RIDX_CCK1) 3780 idx += 10; 3781 3782 /* Make sure idx stays in a valid range. */ 3783 if (idx < 0) 3784 return 0; 3785 if (idx > WPI_MAX_PWR_INDEX) 3786 return WPI_MAX_PWR_INDEX; 3787 return idx; 3788 3789 #undef interpolate 3790 #undef fdivround 3791 } 3792 3793 /* 3794 * Set STA mode power saving level (between 0 and 5). 3795 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3796 */ 3797 static int 3798 wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3799 { 3800 struct wpi_pmgt_cmd cmd; 3801 const struct wpi_pmgt *pmgt; 3802 uint32_t max, reg; 3803 uint8_t skip_dtim; 3804 int i; 3805 3806 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3807 "%s: dtim=%d, level=%d, async=%d\n", 3808 __func__, dtim, level, async); 3809 3810 /* Select which PS parameters to use. */ 3811 if (dtim <= 10) 3812 pmgt = &wpi_pmgt[0][level]; 3813 else 3814 pmgt = &wpi_pmgt[1][level]; 3815 3816 memset(&cmd, 0, sizeof cmd); 3817 if (level != 0) /* not CAM */ 3818 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3819 /* Retrieve PCIe Active State Power Management (ASPM). */ 3820 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, 1); 3821 if (!(reg & PCIEM_LINK_CTL_ASPMC_L0S)) /* L0s Entry disabled. */ 3822 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3823 3824 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3825 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3826 3827 if (dtim == 0) { 3828 dtim = 1; 3829 skip_dtim = 0; 3830 } else 3831 skip_dtim = pmgt->skip_dtim; 3832 3833 if (skip_dtim != 0) { 3834 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3835 max = pmgt->intval[4]; 3836 if (max == (uint32_t)-1) 3837 max = dtim * (skip_dtim + 1); 3838 else if (max > dtim) 3839 max = rounddown(max, dtim); 3840 } else 3841 max = dtim; 3842 3843 for (i = 0; i < 5; i++) 3844 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3845 3846 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3847 } 3848 3849 static int 3850 wpi_send_btcoex(struct wpi_softc *sc) 3851 { 3852 struct wpi_bluetooth cmd; 3853 3854 memset(&cmd, 0, sizeof cmd); 3855 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3856 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3857 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3858 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3859 __func__); 3860 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3861 } 3862 3863 static int 3864 wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3865 { 3866 int error; 3867 3868 if (async) 3869 WPI_RXON_LOCK_ASSERT(sc); 3870 3871 if (assoc && wpi_check_bss_filter(sc) != 0) { 3872 struct wpi_assoc rxon_assoc; 3873 3874 rxon_assoc.flags = sc->rxon.flags; 3875 rxon_assoc.filter = sc->rxon.filter; 3876 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3877 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3878 rxon_assoc.reserved = 0; 3879 3880 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3881 sizeof (struct wpi_assoc), async); 3882 if (error != 0) { 3883 device_printf(sc->sc_dev, 3884 "RXON_ASSOC command failed, error %d\n", error); 3885 return error; 3886 } 3887 } else { 3888 if (async) { 3889 WPI_NT_LOCK(sc); 3890 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3891 sizeof (struct wpi_rxon), async); 3892 if (error == 0) 3893 wpi_clear_node_table(sc); 3894 WPI_NT_UNLOCK(sc); 3895 } else { 3896 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3897 sizeof (struct wpi_rxon), async); 3898 if (error == 0) 3899 wpi_clear_node_table(sc); 3900 } 3901 3902 if (error != 0) { 3903 device_printf(sc->sc_dev, 3904 "RXON command failed, error %d\n", error); 3905 return error; 3906 } 3907 3908 /* Add broadcast node. */ 3909 error = wpi_add_broadcast_node(sc, async); 3910 if (error != 0) { 3911 device_printf(sc->sc_dev, 3912 "could not add broadcast node, error %d\n", error); 3913 return error; 3914 } 3915 } 3916 3917 /* Configuration has changed, set Tx power accordingly. */ 3918 if ((error = wpi_set_txpower(sc, async)) != 0) { 3919 device_printf(sc->sc_dev, 3920 "%s: could not set TX power, error %d\n", __func__, error); 3921 return error; 3922 } 3923 3924 return 0; 3925 } 3926 3927 /** 3928 * Configure the card to listen to a particular channel, this transisions the 3929 * card in to being able to receive frames from remote devices. 3930 */ 3931 static int 3932 wpi_config(struct wpi_softc *sc) 3933 { 3934 struct ieee80211com *ic = &sc->sc_ic; 3935 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3936 struct ieee80211_channel *c = ic->ic_curchan; 3937 int error; 3938 3939 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3940 3941 /* Set power saving level to CAM during initialization. */ 3942 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3943 device_printf(sc->sc_dev, 3944 "%s: could not set power saving level\n", __func__); 3945 return error; 3946 } 3947 3948 /* Configure bluetooth coexistence. */ 3949 if ((error = wpi_send_btcoex(sc)) != 0) { 3950 device_printf(sc->sc_dev, 3951 "could not configure bluetooth coexistence\n"); 3952 return error; 3953 } 3954 3955 /* Configure adapter. */ 3956 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3957 IEEE80211_ADDR_COPY(sc->rxon.myaddr, vap->iv_myaddr); 3958 3959 /* Set default channel. */ 3960 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 3961 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3962 if (IEEE80211_IS_CHAN_2GHZ(c)) 3963 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3964 3965 sc->rxon.filter = WPI_FILTER_MULTICAST; 3966 switch (ic->ic_opmode) { 3967 case IEEE80211_M_STA: 3968 sc->rxon.mode = WPI_MODE_STA; 3969 break; 3970 case IEEE80211_M_IBSS: 3971 sc->rxon.mode = WPI_MODE_IBSS; 3972 sc->rxon.filter |= WPI_FILTER_BEACON; 3973 break; 3974 case IEEE80211_M_HOSTAP: 3975 /* XXX workaround for beaconing */ 3976 sc->rxon.mode = WPI_MODE_IBSS; 3977 sc->rxon.filter |= WPI_FILTER_ASSOC | WPI_FILTER_PROMISC; 3978 break; 3979 case IEEE80211_M_AHDEMO: 3980 sc->rxon.mode = WPI_MODE_HOSTAP; 3981 break; 3982 case IEEE80211_M_MONITOR: 3983 sc->rxon.mode = WPI_MODE_MONITOR; 3984 break; 3985 default: 3986 device_printf(sc->sc_dev, "unknown opmode %d\n", 3987 ic->ic_opmode); 3988 return EINVAL; 3989 } 3990 sc->rxon.filter = htole32(sc->rxon.filter); 3991 wpi_set_promisc(sc); 3992 sc->rxon.cck_mask = 0x0f; /* not yet negotiated */ 3993 sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */ 3994 3995 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) { 3996 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3997 __func__); 3998 return error; 3999 } 4000 4001 /* Setup rate scalling. */ 4002 if ((error = wpi_mrr_setup(sc)) != 0) { 4003 device_printf(sc->sc_dev, "could not setup MRR, error %d\n", 4004 error); 4005 return error; 4006 } 4007 4008 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4009 4010 return 0; 4011 } 4012 4013 static uint16_t 4014 wpi_get_active_dwell_time(struct wpi_softc *sc, 4015 struct ieee80211_channel *c, uint8_t n_probes) 4016 { 4017 /* No channel? Default to 2GHz settings. */ 4018 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) { 4019 return (WPI_ACTIVE_DWELL_TIME_2GHZ + 4020 WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1)); 4021 } 4022 4023 /* 5GHz dwell time. */ 4024 return (WPI_ACTIVE_DWELL_TIME_5GHZ + 4025 WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1)); 4026 } 4027 4028 /* 4029 * Limit the total dwell time. 4030 * 4031 * Returns the dwell time in milliseconds. 4032 */ 4033 static uint16_t 4034 wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time) 4035 { 4036 struct ieee80211com *ic = &sc->sc_ic; 4037 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4038 uint16_t bintval = 0; 4039 4040 /* bintval is in TU (1.024mS) */ 4041 if (vap != NULL) 4042 bintval = vap->iv_bss->ni_intval; 4043 4044 /* 4045 * If it's non-zero, we should calculate the minimum of 4046 * it and the DWELL_BASE. 4047 * 4048 * XXX Yes, the math should take into account that bintval 4049 * is 1.024mS, not 1mS.. 4050 */ 4051 if (bintval > 0) { 4052 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 4053 bintval); 4054 return (MIN(dwell_time, bintval - WPI_CHANNEL_TUNE_TIME * 2)); 4055 } 4056 4057 /* No association context? Default. */ 4058 return dwell_time; 4059 } 4060 4061 static uint16_t 4062 wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 4063 { 4064 uint16_t passive; 4065 4066 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 4067 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 4068 else 4069 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 4070 4071 /* Clamp to the beacon interval if we're associated. */ 4072 return (wpi_limit_dwell(sc, passive)); 4073 } 4074 4075 static uint32_t 4076 wpi_get_scan_pause_time(uint32_t time, uint16_t bintval) 4077 { 4078 uint32_t mod = (time % bintval) * IEEE80211_DUR_TU; 4079 uint32_t nbeacons = time / bintval; 4080 4081 if (mod > WPI_PAUSE_MAX_TIME) 4082 mod = WPI_PAUSE_MAX_TIME; 4083 4084 return WPI_PAUSE_SCAN(nbeacons, mod); 4085 } 4086 4087 /* 4088 * Send a scan request to the firmware. 4089 */ 4090 static int 4091 wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 4092 { 4093 struct ieee80211com *ic = &sc->sc_ic; 4094 struct ieee80211_scan_state *ss = ic->ic_scan; 4095 struct ieee80211vap *vap = ss->ss_vap; 4096 struct wpi_scan_hdr *hdr; 4097 struct wpi_cmd_data *tx; 4098 struct wpi_scan_essid *essids; 4099 struct wpi_scan_chan *chan; 4100 struct ieee80211_frame *wh; 4101 struct ieee80211_rateset *rs; 4102 uint16_t bintval, buflen, dwell_active, dwell_passive; 4103 uint8_t *buf, *frm, i, nssid; 4104 int bgscan, error; 4105 4106 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4107 4108 /* 4109 * We are absolutely not allowed to send a scan command when another 4110 * scan command is pending. 4111 */ 4112 if (callout_pending(&sc->scan_timeout)) { 4113 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 4114 __func__); 4115 error = EAGAIN; 4116 goto fail; 4117 } 4118 4119 bgscan = wpi_check_bss_filter(sc); 4120 bintval = vap->iv_bss->ni_intval; 4121 if (bgscan != 0 && 4122 bintval < WPI_QUIET_TIME_DEFAULT + WPI_CHANNEL_TUNE_TIME * 2) { 4123 error = EOPNOTSUPP; 4124 goto fail; 4125 } 4126 4127 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 4128 if (buf == NULL) { 4129 device_printf(sc->sc_dev, 4130 "%s: could not allocate buffer for scan command\n", 4131 __func__); 4132 error = ENOMEM; 4133 goto fail; 4134 } 4135 hdr = (struct wpi_scan_hdr *)buf; 4136 4137 /* 4138 * Move to the next channel if no packets are received within 10 msecs 4139 * after sending the probe request. 4140 */ 4141 hdr->quiet_time = htole16(WPI_QUIET_TIME_DEFAULT); 4142 hdr->quiet_threshold = htole16(1); 4143 4144 if (bgscan != 0) { 4145 /* 4146 * Max needs to be greater than active and passive and quiet! 4147 * It's also in microseconds! 4148 */ 4149 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 4150 hdr->pause_svc = htole32(wpi_get_scan_pause_time(100, 4151 bintval)); 4152 } 4153 4154 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 4155 4156 tx = (struct wpi_cmd_data *)(hdr + 1); 4157 tx->flags = htole32(WPI_TX_AUTO_SEQ); 4158 tx->id = WPI_ID_BROADCAST; 4159 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 4160 4161 if (IEEE80211_IS_CHAN_5GHZ(c)) { 4162 /* Send probe requests at 6Mbps. */ 4163 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 4164 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 4165 } else { 4166 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 4167 /* Send probe requests at 1Mbps. */ 4168 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 4169 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 4170 } 4171 4172 essids = (struct wpi_scan_essid *)(tx + 1); 4173 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 4174 for (i = 0; i < nssid; i++) { 4175 essids[i].id = IEEE80211_ELEMID_SSID; 4176 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 4177 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 4178 #ifdef WPI_DEBUG 4179 if (sc->sc_debug & WPI_DEBUG_SCAN) { 4180 printf("Scanning Essid: "); 4181 ieee80211_print_essid(essids[i].data, essids[i].len); 4182 printf("\n"); 4183 } 4184 #endif 4185 } 4186 4187 /* 4188 * Build a probe request frame. Most of the following code is a 4189 * copy & paste of what is done in net80211. 4190 */ 4191 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 4192 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 4193 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 4194 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 4195 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr); 4196 IEEE80211_ADDR_COPY(wh->i_addr2, vap->iv_myaddr); 4197 IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr); 4198 4199 frm = (uint8_t *)(wh + 1); 4200 frm = ieee80211_add_ssid(frm, NULL, 0); 4201 frm = ieee80211_add_rates(frm, rs); 4202 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 4203 frm = ieee80211_add_xrates(frm, rs); 4204 4205 /* Set length of probe request. */ 4206 tx->len = htole16(frm - (uint8_t *)wh); 4207 4208 /* 4209 * Construct information about the channel that we 4210 * want to scan. The firmware expects this to be directly 4211 * after the scan probe request 4212 */ 4213 chan = (struct wpi_scan_chan *)frm; 4214 chan->chan = ieee80211_chan2ieee(ic, c); 4215 chan->flags = 0; 4216 if (nssid) { 4217 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 4218 chan->flags |= WPI_CHAN_NPBREQS(nssid); 4219 } else 4220 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 4221 4222 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 4223 chan->flags |= WPI_CHAN_ACTIVE; 4224 4225 /* 4226 * Calculate the active/passive dwell times. 4227 */ 4228 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 4229 dwell_passive = wpi_get_passive_dwell_time(sc, c); 4230 4231 /* Make sure they're valid. */ 4232 if (dwell_active > dwell_passive) 4233 dwell_active = dwell_passive; 4234 4235 chan->active = htole16(dwell_active); 4236 chan->passive = htole16(dwell_passive); 4237 4238 chan->dsp_gain = 0x6e; /* Default level */ 4239 4240 if (IEEE80211_IS_CHAN_5GHZ(c)) 4241 chan->rf_gain = 0x3b; 4242 else 4243 chan->rf_gain = 0x28; 4244 4245 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 4246 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 4247 4248 hdr->nchan++; 4249 4250 if (hdr->nchan == 1 && sc->rxon.chan == chan->chan) { 4251 /* XXX Force probe request transmission. */ 4252 memcpy(chan + 1, chan, sizeof (struct wpi_scan_chan)); 4253 4254 chan++; 4255 4256 /* Reduce unnecessary delay. */ 4257 chan->flags = 0; 4258 chan->passive = chan->active = hdr->quiet_time; 4259 4260 hdr->nchan++; 4261 } 4262 4263 chan++; 4264 4265 buflen = (uint8_t *)chan - buf; 4266 hdr->len = htole16(buflen); 4267 4268 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 4269 hdr->nchan); 4270 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 4271 free(buf, M_DEVBUF); 4272 4273 if (error != 0) 4274 goto fail; 4275 4276 callout_reset(&sc->scan_timeout, 5*hz, wpi_scan_timeout, sc); 4277 4278 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4279 4280 return 0; 4281 4282 fail: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4283 4284 return error; 4285 } 4286 4287 static int 4288 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 4289 { 4290 struct ieee80211com *ic = vap->iv_ic; 4291 struct ieee80211_node *ni = vap->iv_bss; 4292 struct ieee80211_channel *c = ni->ni_chan; 4293 int error; 4294 4295 WPI_RXON_LOCK(sc); 4296 4297 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4298 4299 /* Update adapter configuration. */ 4300 sc->rxon.associd = 0; 4301 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 4302 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4303 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4304 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4305 if (IEEE80211_IS_CHAN_2GHZ(c)) 4306 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4307 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4308 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4309 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4310 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4311 if (IEEE80211_IS_CHAN_A(c)) { 4312 sc->rxon.cck_mask = 0; 4313 sc->rxon.ofdm_mask = 0x15; 4314 } else if (IEEE80211_IS_CHAN_B(c)) { 4315 sc->rxon.cck_mask = 0x03; 4316 sc->rxon.ofdm_mask = 0; 4317 } else { 4318 /* Assume 802.11b/g. */ 4319 sc->rxon.cck_mask = 0x0f; 4320 sc->rxon.ofdm_mask = 0x15; 4321 } 4322 4323 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n", 4324 sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask, 4325 sc->rxon.ofdm_mask); 4326 4327 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4328 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4329 __func__); 4330 } 4331 4332 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4333 4334 WPI_RXON_UNLOCK(sc); 4335 4336 return error; 4337 } 4338 4339 static int 4340 wpi_config_beacon(struct wpi_vap *wvp) 4341 { 4342 struct ieee80211vap *vap = &wvp->wv_vap; 4343 struct ieee80211com *ic = vap->iv_ic; 4344 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off; 4345 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4346 struct wpi_softc *sc = ic->ic_softc; 4347 struct wpi_cmd_beacon *cmd = (struct wpi_cmd_beacon *)&bcn->data; 4348 struct ieee80211_tim_ie *tie; 4349 struct mbuf *m; 4350 uint8_t *ptr; 4351 int error; 4352 4353 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4354 4355 WPI_VAP_LOCK_ASSERT(wvp); 4356 4357 cmd->len = htole16(bcn->m->m_pkthdr.len); 4358 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 4359 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 4360 4361 /* XXX seems to be unused */ 4362 if (*(bo->bo_tim) == IEEE80211_ELEMID_TIM) { 4363 tie = (struct ieee80211_tim_ie *) bo->bo_tim; 4364 ptr = mtod(bcn->m, uint8_t *); 4365 4366 cmd->tim = htole16(bo->bo_tim - ptr); 4367 cmd->timsz = tie->tim_len; 4368 } 4369 4370 /* Necessary for recursion in ieee80211_beacon_update(). */ 4371 m = bcn->m; 4372 bcn->m = m_dup(m, M_NOWAIT); 4373 if (bcn->m == NULL) { 4374 device_printf(sc->sc_dev, 4375 "%s: could not copy beacon frame\n", __func__); 4376 error = ENOMEM; 4377 goto end; 4378 } 4379 4380 if ((error = wpi_cmd2(sc, bcn)) != 0) { 4381 device_printf(sc->sc_dev, 4382 "%s: could not update beacon frame, error %d", __func__, 4383 error); 4384 m_freem(bcn->m); 4385 } 4386 4387 /* Restore mbuf. */ 4388 end: bcn->m = m; 4389 4390 return error; 4391 } 4392 4393 static int 4394 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 4395 { 4396 struct ieee80211vap *vap = ni->ni_vap; 4397 struct wpi_vap *wvp = WPI_VAP(vap); 4398 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4399 struct mbuf *m; 4400 int error; 4401 4402 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4403 4404 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 4405 return EINVAL; 4406 4407 m = ieee80211_beacon_alloc(ni); 4408 if (m == NULL) { 4409 device_printf(sc->sc_dev, 4410 "%s: could not allocate beacon frame\n", __func__); 4411 return ENOMEM; 4412 } 4413 4414 WPI_VAP_LOCK(wvp); 4415 if (bcn->m != NULL) 4416 m_freem(bcn->m); 4417 4418 bcn->m = m; 4419 4420 error = wpi_config_beacon(wvp); 4421 WPI_VAP_UNLOCK(wvp); 4422 4423 return error; 4424 } 4425 4426 static void 4427 wpi_update_beacon(struct ieee80211vap *vap, int item) 4428 { 4429 struct wpi_softc *sc = vap->iv_ic->ic_softc; 4430 struct wpi_vap *wvp = WPI_VAP(vap); 4431 struct wpi_buf *bcn = &wvp->wv_bcbuf; 4432 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off; 4433 struct ieee80211_node *ni = vap->iv_bss; 4434 int mcast = 0; 4435 4436 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4437 4438 WPI_VAP_LOCK(wvp); 4439 if (bcn->m == NULL) { 4440 bcn->m = ieee80211_beacon_alloc(ni); 4441 if (bcn->m == NULL) { 4442 device_printf(sc->sc_dev, 4443 "%s: could not allocate beacon frame\n", __func__); 4444 4445 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, 4446 __func__); 4447 4448 WPI_VAP_UNLOCK(wvp); 4449 return; 4450 } 4451 } 4452 WPI_VAP_UNLOCK(wvp); 4453 4454 if (item == IEEE80211_BEACON_TIM) 4455 mcast = 1; /* TODO */ 4456 4457 setbit(bo->bo_flags, item); 4458 ieee80211_beacon_update(ni, bcn->m, mcast); 4459 4460 WPI_VAP_LOCK(wvp); 4461 wpi_config_beacon(wvp); 4462 WPI_VAP_UNLOCK(wvp); 4463 4464 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4465 } 4466 4467 static void 4468 wpi_newassoc(struct ieee80211_node *ni, int isnew) 4469 { 4470 struct ieee80211vap *vap = ni->ni_vap; 4471 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4472 struct wpi_node *wn = WPI_NODE(ni); 4473 int error; 4474 4475 WPI_NT_LOCK(sc); 4476 4477 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4478 4479 if (vap->iv_opmode != IEEE80211_M_STA && wn->id == WPI_ID_UNDEFINED) { 4480 if ((error = wpi_add_ibss_node(sc, ni)) != 0) { 4481 device_printf(sc->sc_dev, 4482 "%s: could not add IBSS node, error %d\n", 4483 __func__, error); 4484 } 4485 } 4486 WPI_NT_UNLOCK(sc); 4487 } 4488 4489 static int 4490 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 4491 { 4492 struct ieee80211com *ic = vap->iv_ic; 4493 struct ieee80211_node *ni = vap->iv_bss; 4494 struct ieee80211_channel *c = ni->ni_chan; 4495 int error; 4496 4497 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4498 4499 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 4500 /* Link LED blinks while monitoring. */ 4501 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 4502 return 0; 4503 } 4504 4505 /* XXX kernel panic workaround */ 4506 if (c == IEEE80211_CHAN_ANYC) { 4507 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 4508 __func__); 4509 return EINVAL; 4510 } 4511 4512 if ((error = wpi_set_timing(sc, ni)) != 0) { 4513 device_printf(sc->sc_dev, 4514 "%s: could not set timing, error %d\n", __func__, error); 4515 return error; 4516 } 4517 4518 /* Update adapter configuration. */ 4519 WPI_RXON_LOCK(sc); 4520 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 4521 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 4522 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4523 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 4524 if (IEEE80211_IS_CHAN_2GHZ(c)) 4525 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 4526 if (ic->ic_flags & IEEE80211_F_SHSLOT) 4527 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 4528 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 4529 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 4530 if (IEEE80211_IS_CHAN_A(c)) { 4531 sc->rxon.cck_mask = 0; 4532 sc->rxon.ofdm_mask = 0x15; 4533 } else if (IEEE80211_IS_CHAN_B(c)) { 4534 sc->rxon.cck_mask = 0x03; 4535 sc->rxon.ofdm_mask = 0; 4536 } else { 4537 /* Assume 802.11b/g. */ 4538 sc->rxon.cck_mask = 0x0f; 4539 sc->rxon.ofdm_mask = 0x15; 4540 } 4541 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 4542 4543 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 4544 sc->rxon.chan, sc->rxon.flags); 4545 4546 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 4547 device_printf(sc->sc_dev, "%s: could not send RXON\n", 4548 __func__); 4549 return error; 4550 } 4551 4552 /* Start periodic calibration timer. */ 4553 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 4554 4555 WPI_RXON_UNLOCK(sc); 4556 4557 if (vap->iv_opmode == IEEE80211_M_IBSS || 4558 vap->iv_opmode == IEEE80211_M_HOSTAP) { 4559 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 4560 device_printf(sc->sc_dev, 4561 "%s: could not setup beacon, error %d\n", __func__, 4562 error); 4563 return error; 4564 } 4565 } 4566 4567 if (vap->iv_opmode == IEEE80211_M_STA) { 4568 /* Add BSS node. */ 4569 WPI_NT_LOCK(sc); 4570 error = wpi_add_sta_node(sc, ni); 4571 WPI_NT_UNLOCK(sc); 4572 if (error != 0) { 4573 device_printf(sc->sc_dev, 4574 "%s: could not add BSS node, error %d\n", __func__, 4575 error); 4576 return error; 4577 } 4578 } 4579 4580 /* Link LED always on while associated. */ 4581 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4582 4583 /* Enable power-saving mode if requested by user. */ 4584 if ((vap->iv_flags & IEEE80211_F_PMGTON) && 4585 vap->iv_opmode != IEEE80211_M_IBSS) 4586 (void)wpi_set_pslevel(sc, 0, 3, 1); 4587 4588 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4589 4590 return 0; 4591 } 4592 4593 static int 4594 wpi_load_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4595 { 4596 const struct ieee80211_cipher *cip = k->wk_cipher; 4597 struct ieee80211vap *vap = ni->ni_vap; 4598 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4599 struct wpi_node *wn = WPI_NODE(ni); 4600 struct wpi_node_info node; 4601 uint16_t kflags; 4602 int error; 4603 4604 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4605 4606 if (wpi_check_node_entry(sc, wn->id) == 0) { 4607 device_printf(sc->sc_dev, "%s: node does not exist\n", 4608 __func__); 4609 return 0; 4610 } 4611 4612 switch (cip->ic_cipher) { 4613 case IEEE80211_CIPHER_AES_CCM: 4614 kflags = WPI_KFLAG_CCMP; 4615 break; 4616 4617 default: 4618 device_printf(sc->sc_dev, "%s: unknown cipher %d\n", __func__, 4619 cip->ic_cipher); 4620 return 0; 4621 } 4622 4623 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4624 if (k->wk_flags & IEEE80211_KEY_GROUP) 4625 kflags |= WPI_KFLAG_MULTICAST; 4626 4627 memset(&node, 0, sizeof node); 4628 node.id = wn->id; 4629 node.control = WPI_NODE_UPDATE; 4630 node.flags = WPI_FLAG_KEY_SET; 4631 node.kflags = htole16(kflags); 4632 memcpy(node.key, k->wk_key, k->wk_keylen); 4633 again: 4634 DPRINTF(sc, WPI_DEBUG_KEY, 4635 "%s: setting %s key id %d for node %d (%s)\n", __func__, 4636 (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", k->wk_keyix, 4637 node.id, ether_sprintf(ni->ni_macaddr)); 4638 4639 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4640 if (error != 0) { 4641 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4642 error); 4643 return !error; 4644 } 4645 4646 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4647 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4648 kflags |= WPI_KFLAG_MULTICAST; 4649 node.kflags = htole16(kflags); 4650 4651 goto again; 4652 } 4653 4654 return 1; 4655 } 4656 4657 static void 4658 wpi_load_key_cb(void *arg, struct ieee80211_node *ni) 4659 { 4660 const struct ieee80211_key *k = arg; 4661 struct ieee80211vap *vap = ni->ni_vap; 4662 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4663 struct wpi_node *wn = WPI_NODE(ni); 4664 int error; 4665 4666 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4667 return; 4668 4669 WPI_NT_LOCK(sc); 4670 error = wpi_load_key(ni, k); 4671 WPI_NT_UNLOCK(sc); 4672 4673 if (error == 0) { 4674 device_printf(sc->sc_dev, "%s: error while setting key\n", 4675 __func__); 4676 } 4677 } 4678 4679 static int 4680 wpi_set_global_keys(struct ieee80211_node *ni) 4681 { 4682 struct ieee80211vap *vap = ni->ni_vap; 4683 struct ieee80211_key *wk = &vap->iv_nw_keys[0]; 4684 int error = 1; 4685 4686 for (; wk < &vap->iv_nw_keys[IEEE80211_WEP_NKID] && error; wk++) 4687 if (wk->wk_keyix != IEEE80211_KEYIX_NONE) 4688 error = wpi_load_key(ni, wk); 4689 4690 return !error; 4691 } 4692 4693 static int 4694 wpi_del_key(struct ieee80211_node *ni, const struct ieee80211_key *k) 4695 { 4696 struct ieee80211vap *vap = ni->ni_vap; 4697 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4698 struct wpi_node *wn = WPI_NODE(ni); 4699 struct wpi_node_info node; 4700 uint16_t kflags; 4701 int error; 4702 4703 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4704 4705 if (wpi_check_node_entry(sc, wn->id) == 0) { 4706 DPRINTF(sc, WPI_DEBUG_KEY, "%s: node was removed\n", __func__); 4707 return 1; /* Nothing to do. */ 4708 } 4709 4710 kflags = WPI_KFLAG_KID(k->wk_keyix); 4711 if (k->wk_flags & IEEE80211_KEY_GROUP) 4712 kflags |= WPI_KFLAG_MULTICAST; 4713 4714 memset(&node, 0, sizeof node); 4715 node.id = wn->id; 4716 node.control = WPI_NODE_UPDATE; 4717 node.flags = WPI_FLAG_KEY_SET; 4718 node.kflags = htole16(kflags); 4719 again: 4720 DPRINTF(sc, WPI_DEBUG_KEY, "%s: deleting %s key %d for node %d (%s)\n", 4721 __func__, (kflags & WPI_KFLAG_MULTICAST) ? "group" : "ucast", 4722 k->wk_keyix, node.id, ether_sprintf(ni->ni_macaddr)); 4723 4724 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4725 if (error != 0) { 4726 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4727 error); 4728 return !error; 4729 } 4730 4731 if (!(kflags & WPI_KFLAG_MULTICAST) && &vap->iv_nw_keys[0] <= k && 4732 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4733 kflags |= WPI_KFLAG_MULTICAST; 4734 node.kflags = htole16(kflags); 4735 4736 goto again; 4737 } 4738 4739 return 1; 4740 } 4741 4742 static void 4743 wpi_del_key_cb(void *arg, struct ieee80211_node *ni) 4744 { 4745 const struct ieee80211_key *k = arg; 4746 struct ieee80211vap *vap = ni->ni_vap; 4747 struct wpi_softc *sc = ni->ni_ic->ic_softc; 4748 struct wpi_node *wn = WPI_NODE(ni); 4749 int error; 4750 4751 if (vap->iv_bss == ni && wn->id == WPI_ID_UNDEFINED) 4752 return; 4753 4754 WPI_NT_LOCK(sc); 4755 error = wpi_del_key(ni, k); 4756 WPI_NT_UNLOCK(sc); 4757 4758 if (error == 0) { 4759 device_printf(sc->sc_dev, "%s: error while deleting key\n", 4760 __func__); 4761 } 4762 } 4763 4764 static int 4765 wpi_process_key(struct ieee80211vap *vap, const struct ieee80211_key *k, 4766 int set) 4767 { 4768 struct ieee80211com *ic = vap->iv_ic; 4769 struct wpi_softc *sc = ic->ic_softc; 4770 struct wpi_vap *wvp = WPI_VAP(vap); 4771 struct ieee80211_node *ni; 4772 int error, ni_ref = 0; 4773 4774 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4775 4776 if (k->wk_flags & IEEE80211_KEY_SWCRYPT) { 4777 /* Not for us. */ 4778 return 1; 4779 } 4780 4781 if (!(k->wk_flags & IEEE80211_KEY_RECV)) { 4782 /* XMIT keys are handled in wpi_tx_data(). */ 4783 return 1; 4784 } 4785 4786 /* Handle group keys. */ 4787 if (&vap->iv_nw_keys[0] <= k && 4788 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID]) { 4789 WPI_NT_LOCK(sc); 4790 if (set) 4791 wvp->wv_gtk |= WPI_VAP_KEY(k->wk_keyix); 4792 else 4793 wvp->wv_gtk &= ~WPI_VAP_KEY(k->wk_keyix); 4794 WPI_NT_UNLOCK(sc); 4795 4796 if (vap->iv_state == IEEE80211_S_RUN) { 4797 ieee80211_iterate_nodes(&ic->ic_sta, 4798 set ? wpi_load_key_cb : wpi_del_key_cb, 4799 __DECONST(void *, k)); 4800 } 4801 4802 return 1; 4803 } 4804 4805 switch (vap->iv_opmode) { 4806 case IEEE80211_M_STA: 4807 ni = vap->iv_bss; 4808 break; 4809 4810 case IEEE80211_M_IBSS: 4811 case IEEE80211_M_AHDEMO: 4812 case IEEE80211_M_HOSTAP: 4813 ni = ieee80211_find_vap_node(&ic->ic_sta, vap, k->wk_macaddr); 4814 if (ni == NULL) 4815 return 0; /* should not happen */ 4816 4817 ni_ref = 1; 4818 break; 4819 4820 default: 4821 device_printf(sc->sc_dev, "%s: unknown opmode %d\n", __func__, 4822 vap->iv_opmode); 4823 return 0; 4824 } 4825 4826 WPI_NT_LOCK(sc); 4827 if (set) 4828 error = wpi_load_key(ni, k); 4829 else 4830 error = wpi_del_key(ni, k); 4831 WPI_NT_UNLOCK(sc); 4832 4833 if (ni_ref) 4834 ieee80211_node_decref(ni); 4835 4836 return error; 4837 } 4838 4839 static int 4840 wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k) 4841 { 4842 return wpi_process_key(vap, k, 1); 4843 } 4844 4845 static int 4846 wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4847 { 4848 return wpi_process_key(vap, k, 0); 4849 } 4850 4851 /* 4852 * This function is called after the runtime firmware notifies us of its 4853 * readiness (called in a process context). 4854 */ 4855 static int 4856 wpi_post_alive(struct wpi_softc *sc) 4857 { 4858 int ntries, error; 4859 4860 /* Check (again) that the radio is not disabled. */ 4861 if ((error = wpi_nic_lock(sc)) != 0) 4862 return error; 4863 4864 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4865 4866 /* NB: Runtime firmware must be up and running. */ 4867 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4868 device_printf(sc->sc_dev, 4869 "RF switch: radio disabled (%s)\n", __func__); 4870 wpi_nic_unlock(sc); 4871 return EPERM; /* :-) */ 4872 } 4873 wpi_nic_unlock(sc); 4874 4875 /* Wait for thermal sensor to calibrate. */ 4876 for (ntries = 0; ntries < 1000; ntries++) { 4877 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4878 break; 4879 DELAY(10); 4880 } 4881 4882 if (ntries == 1000) { 4883 device_printf(sc->sc_dev, 4884 "timeout waiting for thermal sensor calibration\n"); 4885 return ETIMEDOUT; 4886 } 4887 4888 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4889 return 0; 4890 } 4891 4892 /* 4893 * The firmware boot code is small and is intended to be copied directly into 4894 * the NIC internal memory (no DMA transfer). 4895 */ 4896 static int 4897 wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, uint32_t size) 4898 { 4899 int error, ntries; 4900 4901 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4902 4903 size /= sizeof (uint32_t); 4904 4905 if ((error = wpi_nic_lock(sc)) != 0) 4906 return error; 4907 4908 /* Copy microcode image into NIC memory. */ 4909 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4910 (const uint32_t *)ucode, size); 4911 4912 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4913 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4914 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4915 4916 /* Start boot load now. */ 4917 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4918 4919 /* Wait for transfer to complete. */ 4920 for (ntries = 0; ntries < 1000; ntries++) { 4921 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4922 DPRINTF(sc, WPI_DEBUG_HW, 4923 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4924 WPI_FH_TX_STATUS_IDLE(6), 4925 status & WPI_FH_TX_STATUS_IDLE(6)); 4926 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4927 DPRINTF(sc, WPI_DEBUG_HW, 4928 "Status Match! - ntries = %d\n", ntries); 4929 break; 4930 } 4931 DELAY(10); 4932 } 4933 if (ntries == 1000) { 4934 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4935 __func__); 4936 wpi_nic_unlock(sc); 4937 return ETIMEDOUT; 4938 } 4939 4940 /* Enable boot after power up. */ 4941 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4942 4943 wpi_nic_unlock(sc); 4944 return 0; 4945 } 4946 4947 static int 4948 wpi_load_firmware(struct wpi_softc *sc) 4949 { 4950 struct wpi_fw_info *fw = &sc->fw; 4951 struct wpi_dma_info *dma = &sc->fw_dma; 4952 int error; 4953 4954 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4955 4956 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4957 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4958 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4959 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4960 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4961 4962 /* Tell adapter where to find initialization sections. */ 4963 if ((error = wpi_nic_lock(sc)) != 0) 4964 return error; 4965 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4966 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4967 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4968 dma->paddr + WPI_FW_DATA_MAXSZ); 4969 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4970 wpi_nic_unlock(sc); 4971 4972 /* Load firmware boot code. */ 4973 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4974 if (error != 0) { 4975 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4976 __func__); 4977 return error; 4978 } 4979 4980 /* Now press "execute". */ 4981 WPI_WRITE(sc, WPI_RESET, 0); 4982 4983 /* Wait at most one second for first alive notification. */ 4984 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4985 device_printf(sc->sc_dev, 4986 "%s: timeout waiting for adapter to initialize, error %d\n", 4987 __func__, error); 4988 return error; 4989 } 4990 4991 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4992 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4993 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4994 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4995 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4996 4997 /* Tell adapter where to find runtime sections. */ 4998 if ((error = wpi_nic_lock(sc)) != 0) 4999 return error; 5000 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 5001 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 5002 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 5003 dma->paddr + WPI_FW_DATA_MAXSZ); 5004 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 5005 WPI_FW_UPDATED | fw->main.textsz); 5006 wpi_nic_unlock(sc); 5007 5008 return 0; 5009 } 5010 5011 static int 5012 wpi_read_firmware(struct wpi_softc *sc) 5013 { 5014 const struct firmware *fp; 5015 struct wpi_fw_info *fw = &sc->fw; 5016 const struct wpi_firmware_hdr *hdr; 5017 int error; 5018 5019 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5020 5021 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 5022 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 5023 5024 WPI_UNLOCK(sc); 5025 fp = firmware_get(WPI_FW_NAME); 5026 WPI_LOCK(sc); 5027 5028 if (fp == NULL) { 5029 device_printf(sc->sc_dev, 5030 "could not load firmware image '%s'\n", WPI_FW_NAME); 5031 return EINVAL; 5032 } 5033 5034 sc->fw_fp = fp; 5035 5036 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 5037 device_printf(sc->sc_dev, 5038 "firmware file too short: %zu bytes\n", fp->datasize); 5039 error = EINVAL; 5040 goto fail; 5041 } 5042 5043 fw->size = fp->datasize; 5044 fw->data = (const uint8_t *)fp->data; 5045 5046 /* Extract firmware header information. */ 5047 hdr = (const struct wpi_firmware_hdr *)fw->data; 5048 5049 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 5050 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 5051 5052 fw->main.textsz = le32toh(hdr->rtextsz); 5053 fw->main.datasz = le32toh(hdr->rdatasz); 5054 fw->init.textsz = le32toh(hdr->itextsz); 5055 fw->init.datasz = le32toh(hdr->idatasz); 5056 fw->boot.textsz = le32toh(hdr->btextsz); 5057 fw->boot.datasz = 0; 5058 5059 /* Sanity-check firmware header. */ 5060 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 5061 fw->main.datasz > WPI_FW_DATA_MAXSZ || 5062 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 5063 fw->init.datasz > WPI_FW_DATA_MAXSZ || 5064 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 5065 (fw->boot.textsz & 3) != 0) { 5066 device_printf(sc->sc_dev, "invalid firmware header\n"); 5067 error = EINVAL; 5068 goto fail; 5069 } 5070 5071 /* Check that all firmware sections fit. */ 5072 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 5073 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 5074 device_printf(sc->sc_dev, 5075 "firmware file too short: %zu bytes\n", fw->size); 5076 error = EINVAL; 5077 goto fail; 5078 } 5079 5080 /* Get pointers to firmware sections. */ 5081 fw->main.text = (const uint8_t *)(hdr + 1); 5082 fw->main.data = fw->main.text + fw->main.textsz; 5083 fw->init.text = fw->main.data + fw->main.datasz; 5084 fw->init.data = fw->init.text + fw->init.textsz; 5085 fw->boot.text = fw->init.data + fw->init.datasz; 5086 5087 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 5088 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 5089 "runtime (text: %u, data: %u) init (text: %u, data %u) " 5090 "boot (text %u)\n", hdr->major, hdr->minor, le32toh(hdr->driver), 5091 fw->main.textsz, fw->main.datasz, 5092 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 5093 5094 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 5095 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 5096 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 5097 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 5098 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 5099 5100 return 0; 5101 5102 fail: wpi_unload_firmware(sc); 5103 return error; 5104 } 5105 5106 /** 5107 * Free the referenced firmware image 5108 */ 5109 static void 5110 wpi_unload_firmware(struct wpi_softc *sc) 5111 { 5112 if (sc->fw_fp != NULL) { 5113 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 5114 sc->fw_fp = NULL; 5115 } 5116 } 5117 5118 static int 5119 wpi_clock_wait(struct wpi_softc *sc) 5120 { 5121 int ntries; 5122 5123 /* Set "initialization complete" bit. */ 5124 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 5125 5126 /* Wait for clock stabilization. */ 5127 for (ntries = 0; ntries < 2500; ntries++) { 5128 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 5129 return 0; 5130 DELAY(100); 5131 } 5132 device_printf(sc->sc_dev, 5133 "%s: timeout waiting for clock stabilization\n", __func__); 5134 5135 return ETIMEDOUT; 5136 } 5137 5138 static int 5139 wpi_apm_init(struct wpi_softc *sc) 5140 { 5141 uint32_t reg; 5142 int error; 5143 5144 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5145 5146 /* Disable L0s exit timer (NMI bug workaround). */ 5147 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 5148 /* Don't wait for ICH L0s (ICH bug workaround). */ 5149 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 5150 5151 /* Set FH wait threshold to max (HW bug under stress workaround). */ 5152 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 5153 5154 /* Retrieve PCIe Active State Power Management (ASPM). */ 5155 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, 1); 5156 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 5157 if (reg & PCIEM_LINK_CTL_ASPMC_L1) /* L1 Entry enabled. */ 5158 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 5159 else 5160 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 5161 5162 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 5163 5164 /* Wait for clock stabilization before accessing prph. */ 5165 if ((error = wpi_clock_wait(sc)) != 0) 5166 return error; 5167 5168 if ((error = wpi_nic_lock(sc)) != 0) 5169 return error; 5170 /* Cleanup. */ 5171 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 0x00000400); 5172 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000200); 5173 5174 /* Enable DMA and BSM (Bootstrap State Machine). */ 5175 wpi_prph_write(sc, WPI_APMG_CLK_EN, 5176 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 5177 DELAY(20); 5178 /* Disable L1-Active. */ 5179 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 5180 wpi_nic_unlock(sc); 5181 5182 return 0; 5183 } 5184 5185 static void 5186 wpi_apm_stop_master(struct wpi_softc *sc) 5187 { 5188 int ntries; 5189 5190 /* Stop busmaster DMA activity. */ 5191 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 5192 5193 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 5194 WPI_GP_CNTRL_MAC_PS) 5195 return; /* Already asleep. */ 5196 5197 for (ntries = 0; ntries < 100; ntries++) { 5198 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 5199 return; 5200 DELAY(10); 5201 } 5202 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", 5203 __func__); 5204 } 5205 5206 static void 5207 wpi_apm_stop(struct wpi_softc *sc) 5208 { 5209 wpi_apm_stop_master(sc); 5210 5211 /* Reset the entire device. */ 5212 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 5213 DELAY(10); 5214 /* Clear "initialization complete" bit. */ 5215 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 5216 } 5217 5218 static void 5219 wpi_nic_config(struct wpi_softc *sc) 5220 { 5221 uint32_t rev; 5222 5223 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5224 5225 /* voodoo from the Linux "driver".. */ 5226 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 5227 if ((rev & 0xc0) == 0x40) 5228 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 5229 else if (!(rev & 0x80)) 5230 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 5231 5232 if (sc->cap == 0x80) 5233 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 5234 5235 if ((sc->rev & 0xf0) == 0xd0) 5236 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 5237 else 5238 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 5239 5240 if (sc->type > 1) 5241 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 5242 } 5243 5244 static int 5245 wpi_hw_init(struct wpi_softc *sc) 5246 { 5247 uint8_t chnl; 5248 int ntries, error; 5249 5250 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 5251 5252 /* Clear pending interrupts. */ 5253 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5254 5255 if ((error = wpi_apm_init(sc)) != 0) { 5256 device_printf(sc->sc_dev, 5257 "%s: could not power ON adapter, error %d\n", __func__, 5258 error); 5259 return error; 5260 } 5261 5262 /* Select VMAIN power source. */ 5263 if ((error = wpi_nic_lock(sc)) != 0) 5264 return error; 5265 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 5266 wpi_nic_unlock(sc); 5267 /* Spin until VMAIN gets selected. */ 5268 for (ntries = 0; ntries < 5000; ntries++) { 5269 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 5270 break; 5271 DELAY(10); 5272 } 5273 if (ntries == 5000) { 5274 device_printf(sc->sc_dev, "timeout selecting power source\n"); 5275 return ETIMEDOUT; 5276 } 5277 5278 /* Perform adapter initialization. */ 5279 wpi_nic_config(sc); 5280 5281 /* Initialize RX ring. */ 5282 if ((error = wpi_nic_lock(sc)) != 0) 5283 return error; 5284 /* Set physical address of RX ring. */ 5285 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 5286 /* Set physical address of RX read pointer. */ 5287 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 5288 offsetof(struct wpi_shared, next)); 5289 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 5290 /* Enable RX. */ 5291 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 5292 WPI_FH_RX_CONFIG_DMA_ENA | 5293 WPI_FH_RX_CONFIG_RDRBD_ENA | 5294 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 5295 WPI_FH_RX_CONFIG_MAXFRAG | 5296 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 5297 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 5298 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 5299 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 5300 wpi_nic_unlock(sc); 5301 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 5302 5303 /* Initialize TX rings. */ 5304 if ((error = wpi_nic_lock(sc)) != 0) 5305 return error; 5306 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 5307 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 5308 /* Enable all 6 TX rings. */ 5309 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 5310 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 5311 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 5312 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 5313 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 5314 /* Set physical address of TX rings. */ 5315 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 5316 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 5317 5318 /* Enable all DMA channels. */ 5319 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5320 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 5321 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 5322 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 5323 } 5324 wpi_nic_unlock(sc); 5325 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 5326 5327 /* Clear "radio off" and "commands blocked" bits. */ 5328 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5329 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 5330 5331 /* Clear pending interrupts. */ 5332 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5333 /* Enable interrupts. */ 5334 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 5335 5336 /* _Really_ make sure "radio off" bit is cleared! */ 5337 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5338 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 5339 5340 if ((error = wpi_load_firmware(sc)) != 0) { 5341 device_printf(sc->sc_dev, 5342 "%s: could not load firmware, error %d\n", __func__, 5343 error); 5344 return error; 5345 } 5346 /* Wait at most one second for firmware alive notification. */ 5347 if ((error = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 5348 device_printf(sc->sc_dev, 5349 "%s: timeout waiting for adapter to initialize, error %d\n", 5350 __func__, error); 5351 return error; 5352 } 5353 5354 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5355 5356 /* Do post-firmware initialization. */ 5357 return wpi_post_alive(sc); 5358 } 5359 5360 static void 5361 wpi_hw_stop(struct wpi_softc *sc) 5362 { 5363 uint8_t chnl, qid; 5364 int ntries; 5365 5366 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5367 5368 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 5369 wpi_nic_lock(sc); 5370 5371 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 5372 5373 /* Disable interrupts. */ 5374 WPI_WRITE(sc, WPI_INT_MASK, 0); 5375 WPI_WRITE(sc, WPI_INT, 0xffffffff); 5376 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 5377 5378 /* Make sure we no longer hold the NIC lock. */ 5379 wpi_nic_unlock(sc); 5380 5381 if (wpi_nic_lock(sc) == 0) { 5382 /* Stop TX scheduler. */ 5383 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 5384 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 5385 5386 /* Stop all DMA channels. */ 5387 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 5388 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 5389 for (ntries = 0; ntries < 200; ntries++) { 5390 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 5391 WPI_FH_TX_STATUS_IDLE(chnl)) 5392 break; 5393 DELAY(10); 5394 } 5395 } 5396 wpi_nic_unlock(sc); 5397 } 5398 5399 /* Stop RX ring. */ 5400 wpi_reset_rx_ring(sc); 5401 5402 /* Reset all TX rings. */ 5403 for (qid = 0; qid < WPI_DRV_NTXQUEUES; qid++) 5404 wpi_reset_tx_ring(sc, &sc->txq[qid]); 5405 5406 if (wpi_nic_lock(sc) == 0) { 5407 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 5408 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 5409 wpi_nic_unlock(sc); 5410 } 5411 DELAY(5); 5412 /* Power OFF adapter. */ 5413 wpi_apm_stop(sc); 5414 } 5415 5416 static void 5417 wpi_radio_on(void *arg0, int pending) 5418 { 5419 struct wpi_softc *sc = arg0; 5420 struct ieee80211com *ic = &sc->sc_ic; 5421 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5422 5423 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 5424 5425 WPI_LOCK(sc); 5426 callout_stop(&sc->watchdog_rfkill); 5427 WPI_UNLOCK(sc); 5428 5429 if (vap != NULL) 5430 ieee80211_init(vap); 5431 } 5432 5433 static void 5434 wpi_radio_off(void *arg0, int pending) 5435 { 5436 struct wpi_softc *sc = arg0; 5437 struct ieee80211com *ic = &sc->sc_ic; 5438 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5439 5440 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 5441 5442 ieee80211_notify_radio(ic, 0); 5443 wpi_stop(sc); 5444 if (vap != NULL) 5445 ieee80211_stop(vap); 5446 5447 WPI_LOCK(sc); 5448 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 5449 WPI_UNLOCK(sc); 5450 } 5451 5452 static int 5453 wpi_init(struct wpi_softc *sc) 5454 { 5455 int error = 0; 5456 5457 WPI_LOCK(sc); 5458 5459 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 5460 5461 if (sc->sc_running != 0) 5462 goto end; 5463 5464 /* Check that the radio is not disabled by hardware switch. */ 5465 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 5466 device_printf(sc->sc_dev, 5467 "RF switch: radio disabled (%s)\n", __func__); 5468 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 5469 sc); 5470 error = EINPROGRESS; 5471 goto end; 5472 } 5473 5474 /* Read firmware images from the filesystem. */ 5475 if ((error = wpi_read_firmware(sc)) != 0) { 5476 device_printf(sc->sc_dev, 5477 "%s: could not read firmware, error %d\n", __func__, 5478 error); 5479 goto end; 5480 } 5481 5482 sc->sc_running = 1; 5483 5484 /* Initialize hardware and upload firmware. */ 5485 error = wpi_hw_init(sc); 5486 wpi_unload_firmware(sc); 5487 if (error != 0) { 5488 device_printf(sc->sc_dev, 5489 "%s: could not initialize hardware, error %d\n", __func__, 5490 error); 5491 goto fail; 5492 } 5493 5494 /* Configure adapter now that it is ready. */ 5495 if ((error = wpi_config(sc)) != 0) { 5496 device_printf(sc->sc_dev, 5497 "%s: could not configure device, error %d\n", __func__, 5498 error); 5499 goto fail; 5500 } 5501 5502 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 5503 5504 WPI_UNLOCK(sc); 5505 5506 return 0; 5507 5508 fail: wpi_stop_locked(sc); 5509 5510 end: DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 5511 WPI_UNLOCK(sc); 5512 5513 return error; 5514 } 5515 5516 static void 5517 wpi_stop_locked(struct wpi_softc *sc) 5518 { 5519 5520 WPI_LOCK_ASSERT(sc); 5521 5522 if (sc->sc_running == 0) 5523 return; 5524 5525 WPI_TX_LOCK(sc); 5526 WPI_TXQ_LOCK(sc); 5527 sc->sc_running = 0; 5528 WPI_TXQ_UNLOCK(sc); 5529 WPI_TX_UNLOCK(sc); 5530 5531 WPI_TXQ_STATE_LOCK(sc); 5532 callout_stop(&sc->tx_timeout); 5533 WPI_TXQ_STATE_UNLOCK(sc); 5534 5535 WPI_RXON_LOCK(sc); 5536 callout_stop(&sc->scan_timeout); 5537 callout_stop(&sc->calib_to); 5538 WPI_RXON_UNLOCK(sc); 5539 5540 /* Power OFF hardware. */ 5541 wpi_hw_stop(sc); 5542 } 5543 5544 static void 5545 wpi_stop(struct wpi_softc *sc) 5546 { 5547 WPI_LOCK(sc); 5548 wpi_stop_locked(sc); 5549 WPI_UNLOCK(sc); 5550 } 5551 5552 /* 5553 * Callback from net80211 to start a scan. 5554 */ 5555 static void 5556 wpi_scan_start(struct ieee80211com *ic) 5557 { 5558 struct wpi_softc *sc = ic->ic_softc; 5559 5560 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 5561 } 5562 5563 /* 5564 * Callback from net80211 to terminate a scan. 5565 */ 5566 static void 5567 wpi_scan_end(struct ieee80211com *ic) 5568 { 5569 struct wpi_softc *sc = ic->ic_softc; 5570 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5571 5572 if (vap->iv_state == IEEE80211_S_RUN) 5573 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 5574 } 5575 5576 /** 5577 * Called by the net80211 framework to indicate to the driver 5578 * that the channel should be changed 5579 */ 5580 static void 5581 wpi_set_channel(struct ieee80211com *ic) 5582 { 5583 const struct ieee80211_channel *c = ic->ic_curchan; 5584 struct wpi_softc *sc = ic->ic_softc; 5585 int error; 5586 5587 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 5588 5589 WPI_LOCK(sc); 5590 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 5591 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 5592 WPI_UNLOCK(sc); 5593 WPI_TX_LOCK(sc); 5594 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 5595 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 5596 WPI_TX_UNLOCK(sc); 5597 5598 /* 5599 * Only need to set the channel in Monitor mode. AP scanning and auth 5600 * are already taken care of by their respective firmware commands. 5601 */ 5602 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 5603 WPI_RXON_LOCK(sc); 5604 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 5605 if (IEEE80211_IS_CHAN_2GHZ(c)) { 5606 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 5607 WPI_RXON_24GHZ); 5608 } else { 5609 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 5610 WPI_RXON_24GHZ); 5611 } 5612 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) 5613 device_printf(sc->sc_dev, 5614 "%s: error %d setting channel\n", __func__, 5615 error); 5616 WPI_RXON_UNLOCK(sc); 5617 } 5618 } 5619 5620 /** 5621 * Called by net80211 to indicate that we need to scan the current 5622 * channel. The channel is previously be set via the wpi_set_channel 5623 * callback. 5624 */ 5625 static void 5626 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 5627 { 5628 struct ieee80211vap *vap = ss->ss_vap; 5629 struct ieee80211com *ic = vap->iv_ic; 5630 struct wpi_softc *sc = ic->ic_softc; 5631 int error; 5632 5633 WPI_RXON_LOCK(sc); 5634 error = wpi_scan(sc, ic->ic_curchan); 5635 WPI_RXON_UNLOCK(sc); 5636 if (error != 0) 5637 ieee80211_cancel_scan(vap); 5638 } 5639 5640 /** 5641 * Called by the net80211 framework to indicate 5642 * the minimum dwell time has been met, terminate the scan. 5643 * We don't actually terminate the scan as the firmware will notify 5644 * us when it's finished and we have no way to interrupt it. 5645 */ 5646 static void 5647 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 5648 { 5649 /* NB: don't try to abort scan; wait for firmware to finish */ 5650 } 5651