1 /*- 2 * Copyright (c) 2006,2007 3 * Damien Bergamini <damien.bergamini@free.fr> 4 * Benjamin Close <Benjamin.Close@clearchain.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/cdefs.h> 20 __FBSDID("$FreeBSD$"); 21 22 /* 23 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 24 * 25 * The 3945ABG network adapter doesn't use traditional hardware as 26 * many other adaptors do. Instead at run time the eeprom is set into a known 27 * state and told to load boot firmware. The boot firmware loads an init and a 28 * main binary firmware image into SRAM on the card via DMA. 29 * Once the firmware is loaded, the driver/hw then 30 * communicate by way of circular dma rings via the SRAM to the firmware. 31 * 32 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 33 * The 4 tx data rings allow for prioritization QoS. 34 * 35 * The rx data ring consists of 32 dma buffers. Two registers are used to 36 * indicate where in the ring the driver and the firmware are up to. The 37 * driver sets the initial read index (reg1) and the initial write index (reg2), 38 * the firmware updates the read index (reg1) on rx of a packet and fires an 39 * interrupt. The driver then processes the buffers starting at reg1 indicating 40 * to the firmware which buffers have been accessed by updating reg2. At the 41 * same time allocating new memory for the processed buffer. 42 * 43 * A similar thing happens with the tx rings. The difference is the firmware 44 * stop processing buffers once the queue is full and until confirmation 45 * of a successful transmition (tx_done) has occurred. 46 * 47 * The command ring operates in the same manner as the tx queues. 48 * 49 * All communication direct to the card (ie eeprom) is classed as Stage1 50 * communication 51 * 52 * All communication via the firmware to the card is classed as State2. 53 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 54 * firmware. The bootstrap firmware and runtime firmware are loaded 55 * from host memory via dma to the card then told to execute. From this point 56 * on the majority of communications between the driver and the card goes 57 * via the firmware. 58 */ 59 60 #include "opt_wlan.h" 61 #include "opt_wpi.h" 62 63 #include <sys/param.h> 64 #include <sys/sysctl.h> 65 #include <sys/sockio.h> 66 #include <sys/mbuf.h> 67 #include <sys/kernel.h> 68 #include <sys/socket.h> 69 #include <sys/systm.h> 70 #include <sys/malloc.h> 71 #include <sys/queue.h> 72 #include <sys/taskqueue.h> 73 #include <sys/module.h> 74 #include <sys/bus.h> 75 #include <sys/endian.h> 76 #include <sys/linker.h> 77 #include <sys/firmware.h> 78 79 #include <machine/bus.h> 80 #include <machine/resource.h> 81 #include <sys/rman.h> 82 83 #include <dev/pci/pcireg.h> 84 #include <dev/pci/pcivar.h> 85 86 #include <net/bpf.h> 87 #include <net/if.h> 88 #include <net/if_var.h> 89 #include <net/if_arp.h> 90 #include <net/ethernet.h> 91 #include <net/if_dl.h> 92 #include <net/if_media.h> 93 #include <net/if_types.h> 94 95 #include <netinet/in.h> 96 #include <netinet/in_systm.h> 97 #include <netinet/in_var.h> 98 #include <netinet/if_ether.h> 99 #include <netinet/ip.h> 100 101 #include <net80211/ieee80211_var.h> 102 #include <net80211/ieee80211_radiotap.h> 103 #include <net80211/ieee80211_regdomain.h> 104 #include <net80211/ieee80211_ratectl.h> 105 106 #include <dev/wpi/if_wpireg.h> 107 #include <dev/wpi/if_wpivar.h> 108 #include <dev/wpi/if_wpi_debug.h> 109 110 struct wpi_ident { 111 uint16_t vendor; 112 uint16_t device; 113 uint16_t subdevice; 114 const char *name; 115 }; 116 117 static const struct wpi_ident wpi_ident_table[] = { 118 /* The below entries support ABG regardless of the subid */ 119 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 120 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 121 /* The below entries only support BG */ 122 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 123 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 124 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 125 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 126 { 0, 0, 0, NULL } 127 }; 128 129 static int wpi_probe(device_t); 130 static int wpi_attach(device_t); 131 static void wpi_radiotap_attach(struct wpi_softc *); 132 static void wpi_sysctlattach(struct wpi_softc *); 133 static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 134 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 135 const uint8_t [IEEE80211_ADDR_LEN], 136 const uint8_t [IEEE80211_ADDR_LEN]); 137 static void wpi_vap_delete(struct ieee80211vap *); 138 static int wpi_detach(device_t); 139 static int wpi_shutdown(device_t); 140 static int wpi_suspend(device_t); 141 static int wpi_resume(device_t); 142 static int wpi_nic_lock(struct wpi_softc *); 143 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 144 static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 145 static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 146 void **, bus_size_t, bus_size_t); 147 static void wpi_dma_contig_free(struct wpi_dma_info *); 148 static int wpi_alloc_shared(struct wpi_softc *); 149 static void wpi_free_shared(struct wpi_softc *); 150 static int wpi_alloc_fwmem(struct wpi_softc *); 151 static void wpi_free_fwmem(struct wpi_softc *); 152 static int wpi_alloc_rx_ring(struct wpi_softc *); 153 static void wpi_update_rx_ring(struct wpi_softc *); 154 static void wpi_reset_rx_ring(struct wpi_softc *); 155 static void wpi_free_rx_ring(struct wpi_softc *); 156 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 157 int); 158 static void wpi_update_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 159 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 160 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 161 static int wpi_read_eeprom(struct wpi_softc *, 162 uint8_t macaddr[IEEE80211_ADDR_LEN]); 163 static uint32_t wpi_eeprom_channel_flags(struct wpi_eeprom_chan *); 164 static void wpi_read_eeprom_band(struct wpi_softc *, int); 165 static int wpi_read_eeprom_channels(struct wpi_softc *, int); 166 static struct wpi_eeprom_chan *wpi_find_eeprom_channel(struct wpi_softc *, 167 struct ieee80211_channel *); 168 static int wpi_setregdomain(struct ieee80211com *, 169 struct ieee80211_regdomain *, int, 170 struct ieee80211_channel[]); 171 static int wpi_read_eeprom_group(struct wpi_softc *, int); 172 static void wpi_node_free(struct ieee80211_node *); 173 static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 174 const uint8_t mac[IEEE80211_ADDR_LEN]); 175 static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 176 static void wpi_calib_timeout(void *); 177 static void wpi_rx_done(struct wpi_softc *, struct wpi_rx_desc *, 178 struct wpi_rx_data *); 179 static void wpi_rx_statistics(struct wpi_softc *, struct wpi_rx_desc *, 180 struct wpi_rx_data *); 181 static void wpi_tx_done(struct wpi_softc *, struct wpi_rx_desc *); 182 static void wpi_cmd_done(struct wpi_softc *, struct wpi_rx_desc *); 183 static void wpi_notif_intr(struct wpi_softc *); 184 static void wpi_wakeup_intr(struct wpi_softc *); 185 static void wpi_fatal_intr(struct wpi_softc *); 186 static void wpi_intr(void *); 187 static int wpi_cmd2(struct wpi_softc *, struct wpi_buf *); 188 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 189 struct ieee80211_node *); 190 static int wpi_tx_data_raw(struct wpi_softc *, struct mbuf *, 191 struct ieee80211_node *, 192 const struct ieee80211_bpf_params *); 193 static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 194 const struct ieee80211_bpf_params *); 195 static void wpi_start(struct ifnet *); 196 static void wpi_start_locked(struct ifnet *); 197 static void wpi_watchdog_rfkill(void *); 198 static void wpi_watchdog(void *); 199 static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 200 static int wpi_cmd(struct wpi_softc *, int, const void *, size_t, int); 201 static int wpi_mrr_setup(struct wpi_softc *); 202 static int wpi_add_node(struct wpi_softc *, struct ieee80211_node *); 203 static int wpi_add_broadcast_node(struct wpi_softc *, int); 204 static int wpi_add_ibss_node(struct wpi_softc *, struct ieee80211_node *); 205 static void wpi_del_node(struct wpi_softc *, struct ieee80211_node *); 206 static int wpi_updateedca(struct ieee80211com *); 207 static void wpi_set_promisc(struct wpi_softc *); 208 static void wpi_update_promisc(struct ifnet *); 209 static void wpi_update_mcast(struct ifnet *); 210 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 211 static int wpi_set_timing(struct wpi_softc *, struct ieee80211_node *); 212 static void wpi_power_calibration(struct wpi_softc *); 213 static int wpi_set_txpower(struct wpi_softc *, int); 214 static int wpi_get_power_index(struct wpi_softc *, 215 struct wpi_power_group *, struct ieee80211_channel *, int); 216 static int wpi_set_pslevel(struct wpi_softc *, uint8_t, int, int); 217 static int wpi_send_btcoex(struct wpi_softc *); 218 static int wpi_send_rxon(struct wpi_softc *, int, int); 219 static int wpi_config(struct wpi_softc *); 220 static uint16_t wpi_get_active_dwell_time(struct wpi_softc *, 221 struct ieee80211_channel *, uint8_t); 222 static uint16_t wpi_limit_dwell(struct wpi_softc *, uint16_t); 223 static uint16_t wpi_get_passive_dwell_time(struct wpi_softc *, 224 struct ieee80211_channel *); 225 static int wpi_scan(struct wpi_softc *, struct ieee80211_channel *); 226 static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 227 static void wpi_update_beacon(struct ieee80211vap *, int); 228 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 229 static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 230 static int wpi_key_alloc(struct ieee80211vap *, struct ieee80211_key *, 231 ieee80211_keyix *, ieee80211_keyix *); 232 static int wpi_key_set(struct ieee80211vap *, 233 const struct ieee80211_key *, 234 const uint8_t mac[IEEE80211_ADDR_LEN]); 235 static int wpi_key_delete(struct ieee80211vap *, 236 const struct ieee80211_key *); 237 static int wpi_post_alive(struct wpi_softc *); 238 static int wpi_load_bootcode(struct wpi_softc *, const uint8_t *, int); 239 static int wpi_load_firmware(struct wpi_softc *); 240 static int wpi_read_firmware(struct wpi_softc *); 241 static void wpi_unload_firmware(struct wpi_softc *); 242 static int wpi_clock_wait(struct wpi_softc *); 243 static int wpi_apm_init(struct wpi_softc *); 244 static void wpi_apm_stop_master(struct wpi_softc *); 245 static void wpi_apm_stop(struct wpi_softc *); 246 static void wpi_nic_config(struct wpi_softc *); 247 static int wpi_hw_init(struct wpi_softc *); 248 static void wpi_hw_stop(struct wpi_softc *); 249 static void wpi_radio_on(void *, int); 250 static void wpi_radio_off(void *, int); 251 static void wpi_init_locked(struct wpi_softc *); 252 static void wpi_init(void *); 253 static void wpi_stop_locked(struct wpi_softc *); 254 static void wpi_stop(struct wpi_softc *); 255 static void wpi_scan_start(struct ieee80211com *); 256 static void wpi_scan_end(struct ieee80211com *); 257 static void wpi_set_channel(struct ieee80211com *); 258 static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 259 static void wpi_scan_mindwell(struct ieee80211_scan_state *); 260 static void wpi_hw_reset(void *, int); 261 262 static device_method_t wpi_methods[] = { 263 /* Device interface */ 264 DEVMETHOD(device_probe, wpi_probe), 265 DEVMETHOD(device_attach, wpi_attach), 266 DEVMETHOD(device_detach, wpi_detach), 267 DEVMETHOD(device_shutdown, wpi_shutdown), 268 DEVMETHOD(device_suspend, wpi_suspend), 269 DEVMETHOD(device_resume, wpi_resume), 270 271 DEVMETHOD_END 272 }; 273 274 static driver_t wpi_driver = { 275 "wpi", 276 wpi_methods, 277 sizeof (struct wpi_softc) 278 }; 279 static devclass_t wpi_devclass; 280 281 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 282 283 MODULE_VERSION(wpi, 1); 284 285 MODULE_DEPEND(wpi, pci, 1, 1, 1); 286 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 287 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 288 289 static int 290 wpi_probe(device_t dev) 291 { 292 const struct wpi_ident *ident; 293 294 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 295 if (pci_get_vendor(dev) == ident->vendor && 296 pci_get_device(dev) == ident->device) { 297 device_set_desc(dev, ident->name); 298 return (BUS_PROBE_DEFAULT); 299 } 300 } 301 return ENXIO; 302 } 303 304 static int 305 wpi_attach(device_t dev) 306 { 307 struct wpi_softc *sc = (struct wpi_softc *)device_get_softc(dev); 308 struct ieee80211com *ic; 309 struct ifnet *ifp; 310 int i, error, rid, supportsa = 1; 311 const struct wpi_ident *ident; 312 uint8_t macaddr[IEEE80211_ADDR_LEN]; 313 314 sc->sc_dev = dev; 315 316 #ifdef WPI_DEBUG 317 error = resource_int_value(device_get_name(sc->sc_dev), 318 device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug)); 319 if (error != 0) 320 sc->sc_debug = 0; 321 #else 322 sc->sc_debug = 0; 323 #endif 324 325 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 326 327 /* 328 * Get the offset of the PCI Express Capability Structure in PCI 329 * Configuration Space. 330 */ 331 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 332 if (error != 0) { 333 device_printf(dev, "PCIe capability structure not found!\n"); 334 return error; 335 } 336 337 /* 338 * Some card's only support 802.11b/g not a, check to see if 339 * this is one such card. A 0x0 in the subdevice table indicates 340 * the entire subdevice range is to be ignored. 341 */ 342 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 343 if (ident->subdevice && 344 pci_get_subdevice(dev) == ident->subdevice) { 345 supportsa = 0; 346 break; 347 } 348 } 349 350 /* Clear device-specific "PCI retry timeout" register (41h). */ 351 pci_write_config(dev, 0x41, 0, 1); 352 353 /* Enable bus-mastering. */ 354 pci_enable_busmaster(dev); 355 356 rid = PCIR_BAR(0); 357 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 358 RF_ACTIVE); 359 if (sc->mem == NULL) { 360 device_printf(dev, "can't map mem space\n"); 361 error = ENOMEM; 362 return error; 363 } 364 sc->sc_st = rman_get_bustag(sc->mem); 365 sc->sc_sh = rman_get_bushandle(sc->mem); 366 367 i = 1; 368 rid = 0; 369 if (pci_alloc_msi(dev, &i) == 0) 370 rid = 1; 371 /* Install interrupt handler. */ 372 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 373 (rid != 0 ? 0 : RF_SHAREABLE)); 374 if (sc->irq == NULL) { 375 device_printf(dev, "can't map interrupt\n"); 376 error = ENOMEM; 377 goto fail; 378 } 379 380 WPI_LOCK_INIT(sc); 381 382 sc->sc_unr = new_unrhdr(WPI_ID_IBSS_MIN, WPI_ID_IBSS_MAX, &sc->sc_mtx); 383 384 /* Allocate DMA memory for firmware transfers. */ 385 if ((error = wpi_alloc_fwmem(sc)) != 0) { 386 device_printf(dev, 387 "could not allocate memory for firmware, error %d\n", 388 error); 389 goto fail; 390 } 391 392 /* Allocate shared page. */ 393 if ((error = wpi_alloc_shared(sc)) != 0) { 394 device_printf(dev, "could not allocate shared page\n"); 395 goto fail; 396 } 397 398 /* Allocate TX rings - 4 for QoS purposes, 1 for commands. */ 399 for (i = 0; i < WPI_NTXQUEUES; i++) { 400 if ((error = wpi_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 401 device_printf(dev, 402 "could not allocate TX ring %d, error %d\n", i, 403 error); 404 goto fail; 405 } 406 } 407 408 /* Allocate RX ring. */ 409 if ((error = wpi_alloc_rx_ring(sc)) != 0) { 410 device_printf(dev, "could not allocate RX ring, error %d\n", 411 error); 412 goto fail; 413 } 414 415 /* Clear pending interrupts. */ 416 WPI_WRITE(sc, WPI_INT, 0xffffffff); 417 418 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 419 if (ifp == NULL) { 420 device_printf(dev, "can not allocate ifnet structure\n"); 421 goto fail; 422 } 423 424 ic = ifp->if_l2com; 425 ic->ic_ifp = ifp; 426 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 427 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 428 429 /* Set device capabilities. */ 430 ic->ic_caps = 431 IEEE80211_C_STA /* station mode supported */ 432 | IEEE80211_C_IBSS /* IBSS mode supported */ 433 | IEEE80211_C_MONITOR /* monitor mode supported */ 434 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 435 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 436 | IEEE80211_C_TXPMGT /* tx power management */ 437 | IEEE80211_C_SHSLOT /* short slot time supported */ 438 | IEEE80211_C_WPA /* 802.11i */ 439 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 440 #if 0 441 | IEEE80211_C_HOSTAP /* Host access point mode */ 442 #endif 443 | IEEE80211_C_WME /* 802.11e */ 444 | IEEE80211_C_PMGT /* Station-side power mgmt */ 445 ; 446 447 ic->ic_cryptocaps = 448 IEEE80211_CRYPTO_AES_CCM; 449 450 ic->ic_flags |= IEEE80211_F_DATAPAD; 451 452 /* 453 * Read in the eeprom and also setup the channels for 454 * net80211. We don't set the rates as net80211 does this for us 455 */ 456 if ((error = wpi_read_eeprom(sc, macaddr)) != 0) { 457 device_printf(dev, "could not read EEPROM, error %d\n", 458 error); 459 goto fail; 460 } 461 462 #ifdef WPI_DEBUG 463 if (bootverbose) { 464 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 465 device_printf(sc->sc_dev, "Hardware Type: %c\n", 466 sc->type > 1 ? 'B': '?'); 467 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 468 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 469 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 470 supportsa ? "does" : "does not"); 471 472 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 473 what sc->rev really represents - benjsc 20070615 */ 474 } 475 #endif 476 477 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 478 ifp->if_softc = sc; 479 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 480 ifp->if_init = wpi_init; 481 ifp->if_ioctl = wpi_ioctl; 482 ifp->if_start = wpi_start; 483 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 484 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 485 IFQ_SET_READY(&ifp->if_snd); 486 487 ieee80211_ifattach(ic, macaddr); 488 ic->ic_vap_create = wpi_vap_create; 489 ic->ic_vap_delete = wpi_vap_delete; 490 ic->ic_raw_xmit = wpi_raw_xmit; 491 ic->ic_node_alloc = wpi_node_alloc; 492 sc->sc_node_free = ic->ic_node_free; 493 ic->ic_node_free = wpi_node_free; 494 ic->ic_wme.wme_update = wpi_updateedca; 495 ic->ic_update_promisc = wpi_update_promisc; 496 ic->ic_update_mcast = wpi_update_mcast; 497 ic->ic_scan_start = wpi_scan_start; 498 ic->ic_scan_end = wpi_scan_end; 499 ic->ic_set_channel = wpi_set_channel; 500 sc->sc_scan_curchan = ic->ic_scan_curchan; 501 ic->ic_scan_curchan = wpi_scan_curchan; 502 ic->ic_scan_mindwell = wpi_scan_mindwell; 503 ic->ic_setregdomain = wpi_setregdomain; 504 505 wpi_radiotap_attach(sc); 506 507 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 508 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 509 callout_init_mtx(&sc->watchdog_rfkill, &sc->sc_mtx, 0); 510 TASK_INIT(&sc->sc_reinittask, 0, wpi_hw_reset, sc); 511 TASK_INIT(&sc->sc_radiooff_task, 0, wpi_radio_off, sc); 512 TASK_INIT(&sc->sc_radioon_task, 0, wpi_radio_on, sc); 513 514 wpi_sysctlattach(sc); 515 516 /* 517 * Hook our interrupt after all initialization is complete. 518 */ 519 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 520 NULL, wpi_intr, sc, &sc->sc_ih); 521 if (error != 0) { 522 device_printf(dev, "can't establish interrupt, error %d\n", 523 error); 524 goto fail; 525 } 526 527 if (bootverbose) 528 ieee80211_announce(ic); 529 530 #ifdef WPI_DEBUG 531 if (sc->sc_debug & WPI_DEBUG_HW) 532 ieee80211_announce_channels(ic); 533 #endif 534 535 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 536 return 0; 537 538 fail: wpi_detach(dev); 539 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 540 return error; 541 } 542 543 /* 544 * Attach the interface to 802.11 radiotap. 545 */ 546 static void 547 wpi_radiotap_attach(struct wpi_softc *sc) 548 { 549 struct ifnet *ifp = sc->sc_ifp; 550 struct ieee80211com *ic = ifp->if_l2com; 551 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 552 ieee80211_radiotap_attach(ic, 553 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 554 WPI_TX_RADIOTAP_PRESENT, 555 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 556 WPI_RX_RADIOTAP_PRESENT); 557 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 558 } 559 560 static void 561 wpi_sysctlattach(struct wpi_softc *sc) 562 { 563 #ifdef WPI_DEBUG 564 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 565 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 566 567 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 568 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 569 "control debugging printfs"); 570 #endif 571 } 572 573 static struct ieee80211vap * 574 wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 575 enum ieee80211_opmode opmode, int flags, 576 const uint8_t bssid[IEEE80211_ADDR_LEN], 577 const uint8_t mac[IEEE80211_ADDR_LEN]) 578 { 579 struct wpi_vap *wvp; 580 struct wpi_buf *bcn; 581 struct ieee80211vap *vap; 582 583 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 584 return NULL; 585 586 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 587 M_80211_VAP, M_NOWAIT | M_ZERO); 588 if (wvp == NULL) 589 return NULL; 590 vap = &wvp->vap; 591 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 592 593 bcn = &wvp->wv_bcbuf; 594 bcn->data = NULL; 595 596 /* Override with driver methods. */ 597 wvp->newstate = vap->iv_newstate; 598 vap->iv_key_alloc = wpi_key_alloc; 599 vap->iv_key_set = wpi_key_set; 600 vap->iv_key_delete = wpi_key_delete; 601 vap->iv_newstate = wpi_newstate; 602 vap->iv_update_beacon = wpi_update_beacon; 603 604 ieee80211_ratectl_init(vap); 605 /* Complete setup. */ 606 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 607 ic->ic_opmode = opmode; 608 return vap; 609 } 610 611 static void 612 wpi_vap_delete(struct ieee80211vap *vap) 613 { 614 struct wpi_vap *wvp = WPI_VAP(vap); 615 struct wpi_buf *bcn = &wvp->wv_bcbuf; 616 617 ieee80211_ratectl_deinit(vap); 618 ieee80211_vap_detach(vap); 619 620 if (bcn->data != NULL) 621 free(bcn->data, M_DEVBUF); 622 free(wvp, M_80211_VAP); 623 } 624 625 static int 626 wpi_detach(device_t dev) 627 { 628 struct wpi_softc *sc = device_get_softc(dev); 629 struct ifnet *ifp = sc->sc_ifp; 630 struct ieee80211com *ic; 631 int qid; 632 633 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 634 635 if (ifp != NULL) { 636 ic = ifp->if_l2com; 637 638 ieee80211_draintask(ic, &sc->sc_reinittask); 639 ieee80211_draintask(ic, &sc->sc_radiooff_task); 640 641 wpi_stop(sc); 642 643 callout_drain(&sc->watchdog_to); 644 callout_drain(&sc->watchdog_rfkill); 645 callout_drain(&sc->calib_to); 646 ieee80211_ifdetach(ic); 647 } 648 649 /* Uninstall interrupt handler. */ 650 if (sc->irq != NULL) { 651 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 652 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 653 sc->irq); 654 pci_release_msi(dev); 655 } 656 657 if (sc->txq[0].data_dmat) { 658 /* Free DMA resources. */ 659 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 660 wpi_free_tx_ring(sc, &sc->txq[qid]); 661 662 wpi_free_rx_ring(sc); 663 wpi_free_shared(sc); 664 } 665 666 if (sc->fw_dma.tag) 667 wpi_free_fwmem(sc); 668 669 if (sc->mem != NULL) 670 bus_release_resource(dev, SYS_RES_MEMORY, 671 rman_get_rid(sc->mem), sc->mem); 672 673 if (ifp != NULL) 674 if_free(ifp); 675 676 delete_unrhdr(sc->sc_unr); 677 678 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 679 WPI_LOCK_DESTROY(sc); 680 return 0; 681 } 682 683 static int 684 wpi_shutdown(device_t dev) 685 { 686 struct wpi_softc *sc = device_get_softc(dev); 687 688 wpi_stop(sc); 689 return 0; 690 } 691 692 static int 693 wpi_suspend(device_t dev) 694 { 695 struct wpi_softc *sc = device_get_softc(dev); 696 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 697 698 ieee80211_suspend_all(ic); 699 return 0; 700 } 701 702 static int 703 wpi_resume(device_t dev) 704 { 705 struct wpi_softc *sc = device_get_softc(dev); 706 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 707 708 /* Clear device-specific "PCI retry timeout" register (41h). */ 709 pci_write_config(dev, 0x41, 0, 1); 710 711 ieee80211_resume_all(ic); 712 return 0; 713 } 714 715 /* 716 * Grab exclusive access to NIC memory. 717 */ 718 static int 719 wpi_nic_lock(struct wpi_softc *sc) 720 { 721 int ntries; 722 723 /* Request exclusive access to NIC. */ 724 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 725 726 /* Spin until we actually get the lock. */ 727 for (ntries = 0; ntries < 1000; ntries++) { 728 if ((WPI_READ(sc, WPI_GP_CNTRL) & 729 (WPI_GP_CNTRL_MAC_ACCESS_ENA | WPI_GP_CNTRL_SLEEP)) == 730 WPI_GP_CNTRL_MAC_ACCESS_ENA) 731 return 0; 732 DELAY(10); 733 } 734 735 device_printf(sc->sc_dev, "could not lock memory\n"); 736 737 return ETIMEDOUT; 738 } 739 740 /* 741 * Release lock on NIC memory. 742 */ 743 static __inline void 744 wpi_nic_unlock(struct wpi_softc *sc) 745 { 746 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 747 } 748 749 static __inline uint32_t 750 wpi_prph_read(struct wpi_softc *sc, uint32_t addr) 751 { 752 WPI_WRITE(sc, WPI_PRPH_RADDR, WPI_PRPH_DWORD | addr); 753 WPI_BARRIER_READ_WRITE(sc); 754 return WPI_READ(sc, WPI_PRPH_RDATA); 755 } 756 757 static __inline void 758 wpi_prph_write(struct wpi_softc *sc, uint32_t addr, uint32_t data) 759 { 760 WPI_WRITE(sc, WPI_PRPH_WADDR, WPI_PRPH_DWORD | addr); 761 WPI_BARRIER_WRITE(sc); 762 WPI_WRITE(sc, WPI_PRPH_WDATA, data); 763 } 764 765 static __inline void 766 wpi_prph_setbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 767 { 768 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) | mask); 769 } 770 771 static __inline void 772 wpi_prph_clrbits(struct wpi_softc *sc, uint32_t addr, uint32_t mask) 773 { 774 wpi_prph_write(sc, addr, wpi_prph_read(sc, addr) & ~mask); 775 } 776 777 static __inline void 778 wpi_prph_write_region_4(struct wpi_softc *sc, uint32_t addr, 779 const uint32_t *data, int count) 780 { 781 for (; count > 0; count--, data++, addr += 4) 782 wpi_prph_write(sc, addr, *data); 783 } 784 785 static __inline uint32_t 786 wpi_mem_read(struct wpi_softc *sc, uint32_t addr) 787 { 788 WPI_WRITE(sc, WPI_MEM_RADDR, addr); 789 WPI_BARRIER_READ_WRITE(sc); 790 return WPI_READ(sc, WPI_MEM_RDATA); 791 } 792 793 static __inline void 794 wpi_mem_read_region_4(struct wpi_softc *sc, uint32_t addr, uint32_t *data, 795 int count) 796 { 797 for (; count > 0; count--, addr += 4) 798 *data++ = wpi_mem_read(sc, addr); 799 } 800 801 static int 802 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int count) 803 { 804 uint8_t *out = data; 805 uint32_t val; 806 int error, ntries; 807 808 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 809 810 if ((error = wpi_nic_lock(sc)) != 0) 811 return error; 812 813 for (; count > 0; count -= 2, addr++) { 814 WPI_WRITE(sc, WPI_EEPROM, addr << 2); 815 for (ntries = 0; ntries < 10; ntries++) { 816 val = WPI_READ(sc, WPI_EEPROM); 817 if (val & WPI_EEPROM_READ_VALID) 818 break; 819 DELAY(5); 820 } 821 if (ntries == 10) { 822 device_printf(sc->sc_dev, 823 "timeout reading ROM at 0x%x\n", addr); 824 return ETIMEDOUT; 825 } 826 *out++= val >> 16; 827 if (count > 1) 828 *out ++= val >> 24; 829 } 830 831 wpi_nic_unlock(sc); 832 833 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 834 835 return 0; 836 } 837 838 static void 839 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 840 { 841 if (error != 0) 842 return; 843 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 844 *(bus_addr_t *)arg = segs[0].ds_addr; 845 } 846 847 /* 848 * Allocates a contiguous block of dma memory of the requested size and 849 * alignment. 850 */ 851 static int 852 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 853 void **kvap, bus_size_t size, bus_size_t alignment) 854 { 855 int error; 856 857 dma->tag = NULL; 858 dma->size = size; 859 860 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 861 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 862 1, size, BUS_DMA_NOWAIT, NULL, NULL, &dma->tag); 863 if (error != 0) 864 goto fail; 865 866 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 867 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 868 if (error != 0) 869 goto fail; 870 871 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 872 wpi_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 873 if (error != 0) 874 goto fail; 875 876 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 877 878 if (kvap != NULL) 879 *kvap = dma->vaddr; 880 881 return 0; 882 883 fail: wpi_dma_contig_free(dma); 884 return error; 885 } 886 887 static void 888 wpi_dma_contig_free(struct wpi_dma_info *dma) 889 { 890 if (dma->vaddr != NULL) { 891 bus_dmamap_sync(dma->tag, dma->map, 892 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 893 bus_dmamap_unload(dma->tag, dma->map); 894 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 895 dma->vaddr = NULL; 896 } 897 if (dma->tag != NULL) { 898 bus_dma_tag_destroy(dma->tag); 899 dma->tag = NULL; 900 } 901 } 902 903 /* 904 * Allocate a shared page between host and NIC. 905 */ 906 static int 907 wpi_alloc_shared(struct wpi_softc *sc) 908 { 909 /* Shared buffer must be aligned on a 4KB boundary. */ 910 return wpi_dma_contig_alloc(sc, &sc->shared_dma, 911 (void **)&sc->shared, sizeof (struct wpi_shared), 4096); 912 } 913 914 static void 915 wpi_free_shared(struct wpi_softc *sc) 916 { 917 wpi_dma_contig_free(&sc->shared_dma); 918 } 919 920 /* 921 * Allocate DMA-safe memory for firmware transfer. 922 */ 923 static int 924 wpi_alloc_fwmem(struct wpi_softc *sc) 925 { 926 /* Must be aligned on a 16-byte boundary. */ 927 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 928 WPI_FW_TEXT_MAXSZ + WPI_FW_DATA_MAXSZ, 16); 929 } 930 931 static void 932 wpi_free_fwmem(struct wpi_softc *sc) 933 { 934 wpi_dma_contig_free(&sc->fw_dma); 935 } 936 937 static int 938 wpi_alloc_rx_ring(struct wpi_softc *sc) 939 { 940 struct wpi_rx_ring *ring = &sc->rxq; 941 bus_size_t size; 942 int i, error; 943 944 ring->cur = 0; 945 ring->update = 0; 946 947 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 948 949 /* Allocate RX descriptors (16KB aligned.) */ 950 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 951 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 952 (void **)&ring->desc, size, WPI_RING_DMA_ALIGN); 953 if (error != 0) { 954 device_printf(sc->sc_dev, 955 "%s: could not allocate RX ring DMA memory, error %d\n", 956 __func__, error); 957 goto fail; 958 } 959 960 /* Create RX buffer DMA tag. */ 961 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 962 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 963 MJUMPAGESIZE, 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, 964 &ring->data_dmat); 965 if (error != 0) { 966 device_printf(sc->sc_dev, 967 "%s: could not create RX buf DMA tag, error %d\n", 968 __func__, error); 969 goto fail; 970 } 971 972 /* 973 * Allocate and map RX buffers. 974 */ 975 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 976 struct wpi_rx_data *data = &ring->data[i]; 977 bus_addr_t paddr; 978 979 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 980 if (error != 0) { 981 device_printf(sc->sc_dev, 982 "%s: could not create RX buf DMA map, error %d\n", 983 __func__, error); 984 goto fail; 985 } 986 987 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 988 if (data->m == NULL) { 989 device_printf(sc->sc_dev, 990 "%s: could not allocate RX mbuf\n", __func__); 991 error = ENOBUFS; 992 goto fail; 993 } 994 995 error = bus_dmamap_load(ring->data_dmat, data->map, 996 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 997 &paddr, BUS_DMA_NOWAIT); 998 if (error != 0 && error != EFBIG) { 999 device_printf(sc->sc_dev, 1000 "%s: can't map mbuf (error %d)\n", __func__, 1001 error); 1002 goto fail; 1003 } 1004 1005 /* Set physical address of RX buffer. */ 1006 ring->desc[i] = htole32(paddr); 1007 } 1008 1009 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1010 BUS_DMASYNC_PREWRITE); 1011 1012 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1013 1014 return 0; 1015 1016 fail: wpi_free_rx_ring(sc); 1017 1018 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1019 1020 return error; 1021 } 1022 1023 static void 1024 wpi_update_rx_ring(struct wpi_softc *sc) 1025 { 1026 struct wpi_rx_ring *ring = &sc->rxq; 1027 1028 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1029 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s: wakeup request\n", 1030 __func__); 1031 1032 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1033 ring->update = 1; 1034 } else 1035 WPI_WRITE(sc, WPI_FH_RX_WPTR, ring->cur & ~7); 1036 } 1037 1038 static void 1039 wpi_reset_rx_ring(struct wpi_softc *sc) 1040 { 1041 struct wpi_rx_ring *ring = &sc->rxq; 1042 int ntries; 1043 1044 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1045 1046 if (wpi_nic_lock(sc) == 0) { 1047 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 0); 1048 for (ntries = 0; ntries < 1000; ntries++) { 1049 if (WPI_READ(sc, WPI_FH_RX_STATUS) & 1050 WPI_FH_RX_STATUS_IDLE) 1051 break; 1052 DELAY(10); 1053 } 1054 #ifdef WPI_DEBUG 1055 if (ntries == 1000) { 1056 device_printf(sc->sc_dev, 1057 "timeout resetting Rx ring\n"); 1058 } 1059 #endif 1060 wpi_nic_unlock(sc); 1061 } 1062 1063 ring->cur = 0; 1064 ring->update = 0; 1065 } 1066 1067 static void 1068 wpi_free_rx_ring(struct wpi_softc *sc) 1069 { 1070 struct wpi_rx_ring *ring = &sc->rxq; 1071 int i; 1072 1073 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1074 1075 wpi_dma_contig_free(&ring->desc_dma); 1076 1077 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1078 struct wpi_rx_data *data = &ring->data[i]; 1079 1080 if (data->m != NULL) { 1081 bus_dmamap_sync(ring->data_dmat, data->map, 1082 BUS_DMASYNC_POSTREAD); 1083 bus_dmamap_unload(ring->data_dmat, data->map); 1084 m_freem(data->m); 1085 data->m = NULL; 1086 } 1087 if (data->map != NULL) 1088 bus_dmamap_destroy(ring->data_dmat, data->map); 1089 } 1090 if (ring->data_dmat != NULL) { 1091 bus_dma_tag_destroy(ring->data_dmat); 1092 ring->data_dmat = NULL; 1093 } 1094 } 1095 1096 static int 1097 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int qid) 1098 { 1099 bus_addr_t paddr; 1100 bus_size_t size; 1101 int i, error; 1102 1103 ring->qid = qid; 1104 ring->queued = 0; 1105 ring->cur = 0; 1106 ring->update = 0; 1107 1108 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1109 1110 /* Allocate TX descriptors (16KB aligned.) */ 1111 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_desc); 1112 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1113 size, WPI_RING_DMA_ALIGN); 1114 if (error != 0) { 1115 device_printf(sc->sc_dev, 1116 "%s: could not allocate TX ring DMA memory, error %d\n", 1117 __func__, error); 1118 goto fail; 1119 } 1120 1121 /* Update shared area with ring physical address. */ 1122 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1123 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1124 BUS_DMASYNC_PREWRITE); 1125 1126 /* 1127 * We only use rings 0 through 4 (4 EDCA + cmd) so there is no need 1128 * to allocate commands space for other rings. 1129 * XXX Do we really need to allocate descriptors for other rings? 1130 */ 1131 if (qid > 4) 1132 return 0; 1133 1134 size = WPI_TX_RING_COUNT * sizeof (struct wpi_tx_cmd); 1135 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1136 size, 4); 1137 if (error != 0) { 1138 device_printf(sc->sc_dev, 1139 "%s: could not allocate TX cmd DMA memory, error %d\n", 1140 __func__, error); 1141 goto fail; 1142 } 1143 1144 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1145 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1146 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1147 &ring->data_dmat); 1148 if (error != 0) { 1149 device_printf(sc->sc_dev, 1150 "%s: could not create TX buf DMA tag, error %d\n", 1151 __func__, error); 1152 goto fail; 1153 } 1154 1155 paddr = ring->cmd_dma.paddr; 1156 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1157 struct wpi_tx_data *data = &ring->data[i]; 1158 1159 data->cmd_paddr = paddr; 1160 paddr += sizeof (struct wpi_tx_cmd); 1161 1162 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1163 if (error != 0) { 1164 device_printf(sc->sc_dev, 1165 "%s: could not create TX buf DMA map, error %d\n", 1166 __func__, error); 1167 goto fail; 1168 } 1169 } 1170 1171 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1172 1173 return 0; 1174 1175 fail: wpi_free_tx_ring(sc, ring); 1176 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1177 return error; 1178 } 1179 1180 static void 1181 wpi_update_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1182 { 1183 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) { 1184 DPRINTF(sc, WPI_DEBUG_PWRSAVE, "%s (%d): requesting wakeup\n", 1185 __func__, ring->qid); 1186 1187 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 1188 ring->update = 1; 1189 } else 1190 WPI_WRITE(sc, WPI_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 1191 } 1192 1193 static void 1194 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1195 { 1196 int i; 1197 1198 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1199 1200 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1201 struct wpi_tx_data *data = &ring->data[i]; 1202 1203 if (data->m != NULL) { 1204 bus_dmamap_sync(ring->data_dmat, data->map, 1205 BUS_DMASYNC_POSTWRITE); 1206 bus_dmamap_unload(ring->data_dmat, data->map); 1207 m_freem(data->m); 1208 data->m = NULL; 1209 } 1210 } 1211 /* Clear TX descriptors. */ 1212 memset(ring->desc, 0, ring->desc_dma.size); 1213 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1214 BUS_DMASYNC_PREWRITE); 1215 sc->qfullmsk &= ~(1 << ring->qid); 1216 ring->queued = 0; 1217 ring->cur = 0; 1218 ring->update = 0; 1219 } 1220 1221 static void 1222 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1223 { 1224 int i; 1225 1226 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 1227 1228 wpi_dma_contig_free(&ring->desc_dma); 1229 wpi_dma_contig_free(&ring->cmd_dma); 1230 1231 for (i = 0; i < WPI_TX_RING_COUNT; i++) { 1232 struct wpi_tx_data *data = &ring->data[i]; 1233 1234 if (data->m != NULL) { 1235 bus_dmamap_sync(ring->data_dmat, data->map, 1236 BUS_DMASYNC_POSTWRITE); 1237 bus_dmamap_unload(ring->data_dmat, data->map); 1238 m_freem(data->m); 1239 } 1240 if (data->map != NULL) 1241 bus_dmamap_destroy(ring->data_dmat, data->map); 1242 } 1243 if (ring->data_dmat != NULL) { 1244 bus_dma_tag_destroy(ring->data_dmat); 1245 ring->data_dmat = NULL; 1246 } 1247 } 1248 1249 /* 1250 * Extract various information from EEPROM. 1251 */ 1252 static int 1253 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 1254 { 1255 #define WPI_CHK(res) do { \ 1256 if ((error = res) != 0) \ 1257 goto fail; \ 1258 } while (0) 1259 int error, i; 1260 1261 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1262 1263 /* Adapter has to be powered on for EEPROM access to work. */ 1264 if ((error = wpi_apm_init(sc)) != 0) { 1265 device_printf(sc->sc_dev, 1266 "%s: could not power ON adapter, error %d\n", __func__, 1267 error); 1268 return error; 1269 } 1270 1271 if ((WPI_READ(sc, WPI_EEPROM_GP) & 0x6) == 0) { 1272 device_printf(sc->sc_dev, "bad EEPROM signature\n"); 1273 error = EIO; 1274 goto fail; 1275 } 1276 /* Clear HW ownership of EEPROM. */ 1277 WPI_CLRBITS(sc, WPI_EEPROM_GP, WPI_EEPROM_GP_IF_OWNER); 1278 1279 /* Read the hardware capabilities, revision and SKU type. */ 1280 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_SKU_CAP, &sc->cap, 1281 sizeof(sc->cap))); 1282 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 1283 sizeof(sc->rev))); 1284 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1285 sizeof(sc->type))); 1286 1287 DPRINTF(sc, WPI_DEBUG_EEPROM, "cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 1288 sc->type); 1289 1290 /* Read the regulatory domain (4 ASCII characters.) */ 1291 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 1292 sizeof(sc->domain))); 1293 1294 /* Read MAC address. */ 1295 WPI_CHK(wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 1296 IEEE80211_ADDR_LEN)); 1297 1298 /* Read the list of authorized channels. */ 1299 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 1300 WPI_CHK(wpi_read_eeprom_channels(sc, i)); 1301 1302 /* Read the list of TX power groups. */ 1303 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 1304 WPI_CHK(wpi_read_eeprom_group(sc, i)); 1305 1306 fail: wpi_apm_stop(sc); /* Power OFF adapter. */ 1307 1308 DPRINTF(sc, WPI_DEBUG_TRACE, error ? TRACE_STR_END_ERR : TRACE_STR_END, 1309 __func__); 1310 1311 return error; 1312 #undef WPI_CHK 1313 } 1314 1315 /* 1316 * Translate EEPROM flags to net80211. 1317 */ 1318 static uint32_t 1319 wpi_eeprom_channel_flags(struct wpi_eeprom_chan *channel) 1320 { 1321 uint32_t nflags; 1322 1323 nflags = 0; 1324 if ((channel->flags & WPI_EEPROM_CHAN_ACTIVE) == 0) 1325 nflags |= IEEE80211_CHAN_PASSIVE; 1326 if ((channel->flags & WPI_EEPROM_CHAN_IBSS) == 0) 1327 nflags |= IEEE80211_CHAN_NOADHOC; 1328 if (channel->flags & WPI_EEPROM_CHAN_RADAR) { 1329 nflags |= IEEE80211_CHAN_DFS; 1330 /* XXX apparently IBSS may still be marked */ 1331 nflags |= IEEE80211_CHAN_NOADHOC; 1332 } 1333 1334 return nflags; 1335 } 1336 1337 static void 1338 wpi_read_eeprom_band(struct wpi_softc *sc, int n) 1339 { 1340 struct ifnet *ifp = sc->sc_ifp; 1341 struct ieee80211com *ic = ifp->if_l2com; 1342 struct wpi_eeprom_chan *channels = sc->eeprom_channels[n]; 1343 const struct wpi_chan_band *band = &wpi_bands[n]; 1344 struct ieee80211_channel *c; 1345 uint8_t chan; 1346 int i, nflags; 1347 1348 for (i = 0; i < band->nchan; i++) { 1349 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 1350 DPRINTF(sc, WPI_DEBUG_HW, 1351 "Channel Not Valid: %d, band %d\n", 1352 band->chan[i],n); 1353 continue; 1354 } 1355 1356 chan = band->chan[i]; 1357 nflags = wpi_eeprom_channel_flags(&channels[i]); 1358 1359 c = &ic->ic_channels[ic->ic_nchans++]; 1360 c->ic_ieee = chan; 1361 c->ic_maxregpower = channels[i].maxpwr; 1362 c->ic_maxpower = 2*c->ic_maxregpower; 1363 1364 if (n == 0) { /* 2GHz band */ 1365 c->ic_freq = ieee80211_ieee2mhz(chan, IEEE80211_CHAN_G); 1366 /* G =>'s B is supported */ 1367 c->ic_flags = IEEE80211_CHAN_B | nflags; 1368 c = &ic->ic_channels[ic->ic_nchans++]; 1369 c[0] = c[-1]; 1370 c->ic_flags = IEEE80211_CHAN_G | nflags; 1371 } else { /* 5GHz band */ 1372 c->ic_freq = ieee80211_ieee2mhz(chan, IEEE80211_CHAN_A); 1373 c->ic_flags = IEEE80211_CHAN_A | nflags; 1374 } 1375 1376 /* Save maximum allowed TX power for this channel. */ 1377 sc->maxpwr[chan] = channels[i].maxpwr; 1378 1379 DPRINTF(sc, WPI_DEBUG_EEPROM, 1380 "adding chan %d (%dMHz) flags=0x%x maxpwr=%d passive=%d," 1381 " offset %d\n", chan, c->ic_freq, 1382 channels[i].flags, sc->maxpwr[chan], 1383 IEEE80211_IS_CHAN_PASSIVE(c), ic->ic_nchans); 1384 } 1385 } 1386 1387 /** 1388 * Read the eeprom to find out what channels are valid for the given 1389 * band and update net80211 with what we find. 1390 */ 1391 static int 1392 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 1393 { 1394 struct ifnet *ifp = sc->sc_ifp; 1395 struct ieee80211com *ic = ifp->if_l2com; 1396 const struct wpi_chan_band *band = &wpi_bands[n]; 1397 int error; 1398 1399 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1400 1401 error = wpi_read_prom_data(sc, band->addr, &sc->eeprom_channels[n], 1402 band->nchan * sizeof (struct wpi_eeprom_chan)); 1403 if (error != 0) { 1404 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1405 return error; 1406 } 1407 1408 wpi_read_eeprom_band(sc, n); 1409 1410 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 1411 1412 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1413 1414 return 0; 1415 } 1416 1417 static struct wpi_eeprom_chan * 1418 wpi_find_eeprom_channel(struct wpi_softc *sc, struct ieee80211_channel *c) 1419 { 1420 int i, j; 1421 1422 for (j = 0; j < WPI_CHAN_BANDS_COUNT; j++) 1423 for (i = 0; i < wpi_bands[j].nchan; i++) 1424 if (wpi_bands[j].chan[i] == c->ic_ieee) 1425 return &sc->eeprom_channels[j][i]; 1426 1427 return NULL; 1428 } 1429 1430 /* 1431 * Enforce flags read from EEPROM. 1432 */ 1433 static int 1434 wpi_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 1435 int nchan, struct ieee80211_channel chans[]) 1436 { 1437 struct ifnet *ifp = ic->ic_ifp; 1438 struct wpi_softc *sc = ifp->if_softc; 1439 int i; 1440 1441 for (i = 0; i < nchan; i++) { 1442 struct ieee80211_channel *c = &chans[i]; 1443 struct wpi_eeprom_chan *channel; 1444 1445 channel = wpi_find_eeprom_channel(sc, c); 1446 if (channel == NULL) { 1447 if_printf(ic->ic_ifp, 1448 "%s: invalid channel %u freq %u/0x%x\n", 1449 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 1450 return EINVAL; 1451 } 1452 c->ic_flags |= wpi_eeprom_channel_flags(channel); 1453 } 1454 1455 return 0; 1456 } 1457 1458 static int 1459 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 1460 { 1461 struct wpi_power_group *group = &sc->groups[n]; 1462 struct wpi_eeprom_group rgroup; 1463 int i, error; 1464 1465 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1466 1467 if ((error = wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, 1468 &rgroup, sizeof rgroup)) != 0) { 1469 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1470 return error; 1471 } 1472 1473 /* Save TX power group information. */ 1474 group->chan = rgroup.chan; 1475 group->maxpwr = rgroup.maxpwr; 1476 /* Retrieve temperature at which the samples were taken. */ 1477 group->temp = (int16_t)le16toh(rgroup.temp); 1478 1479 DPRINTF(sc, WPI_DEBUG_EEPROM, 1480 "power group %d: chan=%d maxpwr=%d temp=%d\n", n, group->chan, 1481 group->maxpwr, group->temp); 1482 1483 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 1484 group->samples[i].index = rgroup.samples[i].index; 1485 group->samples[i].power = rgroup.samples[i].power; 1486 1487 DPRINTF(sc, WPI_DEBUG_EEPROM, 1488 "\tsample %d: index=%d power=%d\n", i, 1489 group->samples[i].index, group->samples[i].power); 1490 } 1491 1492 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1493 1494 return 0; 1495 } 1496 1497 static struct ieee80211_node * 1498 wpi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 1499 { 1500 struct wpi_node *wn; 1501 1502 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, 1503 M_NOWAIT | M_ZERO); 1504 1505 if (wn == NULL) 1506 return NULL; 1507 1508 wn->id = WPI_ID_UNDEFINED; 1509 1510 return &wn->ni; 1511 } 1512 1513 static void 1514 wpi_node_free(struct ieee80211_node *ni) 1515 { 1516 struct ieee80211com *ic = ni->ni_ic; 1517 struct wpi_softc *sc = ic->ic_ifp->if_softc; 1518 struct wpi_node *wn = (struct wpi_node *)ni; 1519 1520 if (wn->id >= WPI_ID_IBSS_MIN && wn->id <= WPI_ID_IBSS_MAX) { 1521 free_unr(sc->sc_unr, wn->id); 1522 1523 WPI_LOCK(sc); 1524 if (sc->rxon.filter & htole32(WPI_FILTER_BSS)) 1525 wpi_del_node(sc, ni); 1526 WPI_UNLOCK(sc); 1527 } 1528 1529 sc->sc_node_free(ni); 1530 } 1531 1532 /** 1533 * Called by net80211 when ever there is a change to 80211 state machine 1534 */ 1535 static int 1536 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1537 { 1538 struct wpi_vap *wvp = WPI_VAP(vap); 1539 struct ieee80211com *ic = vap->iv_ic; 1540 struct ifnet *ifp = ic->ic_ifp; 1541 struct wpi_softc *sc = ifp->if_softc; 1542 int error = 0; 1543 1544 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1545 1546 DPRINTF(sc, WPI_DEBUG_STATE, "%s: %s -> %s\n", __func__, 1547 ieee80211_state_name[vap->iv_state], 1548 ieee80211_state_name[nstate]); 1549 1550 IEEE80211_UNLOCK(ic); 1551 WPI_LOCK(sc); 1552 switch (nstate) { 1553 case IEEE80211_S_SCAN: 1554 if ((vap->iv_opmode == IEEE80211_M_IBSS || 1555 vap->iv_opmode == IEEE80211_M_AHDEMO) && 1556 (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 1557 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 1558 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 1559 device_printf(sc->sc_dev, 1560 "%s: could not send RXON\n", __func__); 1561 } 1562 } 1563 break; 1564 1565 case IEEE80211_S_ASSOC: 1566 if (vap->iv_state != IEEE80211_S_RUN) 1567 break; 1568 /* FALLTHROUGH */ 1569 case IEEE80211_S_AUTH: 1570 /* 1571 * The node must be registered in the firmware before auth. 1572 * Also the associd must be cleared on RUN -> ASSOC 1573 * transitions. 1574 */ 1575 if ((error = wpi_auth(sc, vap)) != 0) { 1576 device_printf(sc->sc_dev, 1577 "%s: could not move to AUTH state, error %d\n", 1578 __func__, error); 1579 } 1580 break; 1581 1582 case IEEE80211_S_RUN: 1583 /* 1584 * RUN -> RUN transition; Just restart the timers. 1585 */ 1586 if (vap->iv_state == IEEE80211_S_RUN) { 1587 wpi_calib_timeout(sc); 1588 break; 1589 } 1590 1591 /* 1592 * !RUN -> RUN requires setting the association id 1593 * which is done with a firmware cmd. We also defer 1594 * starting the timers until that work is done. 1595 */ 1596 if ((error = wpi_run(sc, vap)) != 0) { 1597 device_printf(sc->sc_dev, 1598 "%s: could not move to RUN state\n", __func__); 1599 } 1600 break; 1601 1602 default: 1603 break; 1604 } 1605 WPI_UNLOCK(sc); 1606 IEEE80211_LOCK(ic); 1607 if (error != 0) { 1608 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 1609 return error; 1610 } 1611 1612 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1613 1614 return wvp->newstate(vap, nstate, arg); 1615 } 1616 1617 static void 1618 wpi_calib_timeout(void *arg) 1619 { 1620 struct wpi_softc *sc = arg; 1621 struct ifnet *ifp = sc->sc_ifp; 1622 struct ieee80211com *ic = ifp->if_l2com; 1623 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1624 1625 if (vap->iv_state != IEEE80211_S_RUN) 1626 return; 1627 1628 wpi_power_calibration(sc); 1629 1630 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 1631 } 1632 1633 static __inline uint8_t 1634 rate2plcp(const uint8_t rate) 1635 { 1636 switch (rate) { 1637 case 12: return 0xd; 1638 case 18: return 0xf; 1639 case 24: return 0x5; 1640 case 36: return 0x7; 1641 case 48: return 0x9; 1642 case 72: return 0xb; 1643 case 96: return 0x1; 1644 case 108: return 0x3; 1645 case 2: return 10; 1646 case 4: return 20; 1647 case 11: return 55; 1648 case 22: return 110; 1649 default: return 0; 1650 } 1651 } 1652 1653 static __inline uint8_t 1654 plcp2rate(const uint8_t plcp) 1655 { 1656 switch (plcp) { 1657 case 0xd: return 12; 1658 case 0xf: return 18; 1659 case 0x5: return 24; 1660 case 0x7: return 36; 1661 case 0x9: return 48; 1662 case 0xb: return 72; 1663 case 0x1: return 96; 1664 case 0x3: return 108; 1665 case 10: return 2; 1666 case 20: return 4; 1667 case 55: return 11; 1668 case 110: return 22; 1669 default: return 0; 1670 } 1671 } 1672 1673 /* Quickly determine if a given rate is CCK or OFDM. */ 1674 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1675 1676 static void 1677 wpi_rx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1678 struct wpi_rx_data *data) 1679 { 1680 struct ifnet *ifp = sc->sc_ifp; 1681 const struct ieee80211_cipher *cip = NULL; 1682 struct ieee80211com *ic = ifp->if_l2com; 1683 struct wpi_rx_ring *ring = &sc->rxq; 1684 struct wpi_rx_stat *stat; 1685 struct wpi_rx_head *head; 1686 struct wpi_rx_tail *tail; 1687 struct ieee80211_frame *wh; 1688 struct ieee80211_node *ni; 1689 struct mbuf *m, *m1; 1690 bus_addr_t paddr; 1691 uint32_t flags; 1692 uint16_t len; 1693 int error; 1694 1695 stat = (struct wpi_rx_stat *)(desc + 1); 1696 1697 if (stat->len > WPI_STAT_MAXLEN) { 1698 device_printf(sc->sc_dev, "invalid RX statistic header\n"); 1699 goto fail1; 1700 } 1701 1702 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1703 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1704 len = le16toh(head->len); 1705 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + len); 1706 flags = le32toh(tail->flags); 1707 1708 DPRINTF(sc, WPI_DEBUG_RECV, "%s: idx %d len %d stat len %u rssi %d" 1709 " rate %x chan %d tstamp %ju\n", __func__, ring->cur, 1710 le32toh(desc->len), len, (int8_t)stat->rssi, 1711 head->plcp, head->chan, (uintmax_t)le64toh(tail->tstamp)); 1712 1713 /* Discard frames with a bad FCS early. */ 1714 if ((flags & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1715 DPRINTF(sc, WPI_DEBUG_RECV, "%s: RX flags error %x\n", 1716 __func__, flags); 1717 goto fail1; 1718 } 1719 /* Discard frames that are too short. */ 1720 if (len < sizeof (*wh)) { 1721 DPRINTF(sc, WPI_DEBUG_RECV, "%s: frame too short: %d\n", 1722 __func__, len); 1723 goto fail1; 1724 } 1725 1726 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1727 if (m1 == NULL) { 1728 DPRINTF(sc, WPI_DEBUG_ANY, "%s: no mbuf to restock ring\n", 1729 __func__); 1730 goto fail1; 1731 } 1732 bus_dmamap_unload(ring->data_dmat, data->map); 1733 1734 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 1735 MJUMPAGESIZE, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1736 if (error != 0 && error != EFBIG) { 1737 device_printf(sc->sc_dev, 1738 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1739 m_freem(m1); 1740 1741 /* Try to reload the old mbuf. */ 1742 error = bus_dmamap_load(ring->data_dmat, data->map, 1743 mtod(data->m, void *), MJUMPAGESIZE, wpi_dma_map_addr, 1744 &paddr, BUS_DMA_NOWAIT); 1745 if (error != 0 && error != EFBIG) { 1746 panic("%s: could not load old RX mbuf", __func__); 1747 } 1748 /* Physical address may have changed. */ 1749 ring->desc[ring->cur] = htole32(paddr); 1750 bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, 1751 BUS_DMASYNC_PREWRITE); 1752 goto fail1; 1753 } 1754 1755 m = data->m; 1756 data->m = m1; 1757 /* Update RX descriptor. */ 1758 ring->desc[ring->cur] = htole32(paddr); 1759 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1760 BUS_DMASYNC_PREWRITE); 1761 1762 /* Finalize mbuf. */ 1763 m->m_pkthdr.rcvif = ifp; 1764 m->m_data = (caddr_t)(head + 1); 1765 m->m_pkthdr.len = m->m_len = len; 1766 1767 /* Grab a reference to the source node. */ 1768 wh = mtod(m, struct ieee80211_frame *); 1769 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1770 1771 if (ni != NULL) 1772 cip = ni->ni_ucastkey.wk_cipher; 1773 if ((wh->i_fc[1] & IEEE80211_FC1_PROTECTED) && 1774 !IEEE80211_IS_MULTICAST(wh->i_addr1) && 1775 cip != NULL && cip->ic_cipher == IEEE80211_CIPHER_AES_CCM) { 1776 if ((flags & WPI_RX_CIPHER_MASK) != WPI_RX_CIPHER_CCMP) 1777 goto fail2; 1778 1779 /* Check whether decryption was successful or not. */ 1780 if ((flags & WPI_RX_DECRYPT_MASK) != WPI_RX_DECRYPT_OK) { 1781 DPRINTF(sc, WPI_DEBUG_RECV, 1782 "CCMP decryption failed 0x%x\n", flags); 1783 goto fail2; 1784 } 1785 m->m_flags |= M_WEP; 1786 } 1787 1788 if (ieee80211_radiotap_active(ic)) { 1789 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1790 1791 tap->wr_flags = 0; 1792 if (head->flags & htole16(WPI_STAT_FLAG_SHPREAMBLE)) 1793 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1794 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1795 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1796 tap->wr_tsft = tail->tstamp; 1797 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1798 tap->wr_rate = plcp2rate(head->plcp); 1799 } 1800 1801 WPI_UNLOCK(sc); 1802 1803 /* Send the frame to the 802.11 layer. */ 1804 if (ni != NULL) { 1805 (void)ieee80211_input(ni, m, stat->rssi, -WPI_RSSI_OFFSET); 1806 /* Node is no longer needed. */ 1807 ieee80211_free_node(ni); 1808 } else 1809 (void)ieee80211_input_all(ic, m, stat->rssi, -WPI_RSSI_OFFSET); 1810 1811 WPI_LOCK(sc); 1812 1813 return; 1814 1815 fail2: ieee80211_free_node(ni); 1816 m_freem(m); 1817 1818 fail1: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1819 } 1820 1821 static void 1822 wpi_rx_statistics(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1823 struct wpi_rx_data *data) 1824 { 1825 /* Ignore */ 1826 } 1827 1828 static void 1829 wpi_tx_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1830 { 1831 struct ifnet *ifp = sc->sc_ifp; 1832 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1833 struct wpi_tx_data *data = &ring->data[desc->idx]; 1834 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1835 struct mbuf *m; 1836 struct ieee80211_node *ni; 1837 struct ieee80211vap *vap; 1838 int ackfailcnt = stat->ackfailcnt; 1839 int status = le32toh(stat->status); 1840 1841 KASSERT(data->ni != NULL, ("no node")); 1842 1843 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 1844 1845 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: " 1846 "qid %d idx %d retries %d btkillcnt %d rate %x duration %d " 1847 "status %x\n", __func__, desc->qid, desc->idx, ackfailcnt, 1848 stat->btkillcnt, stat->rate, le32toh(stat->duration), status); 1849 1850 /* Unmap and free mbuf. */ 1851 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1852 bus_dmamap_unload(ring->data_dmat, data->map); 1853 m = data->m, data->m = NULL; 1854 ni = data->ni, data->ni = NULL; 1855 vap = ni->ni_vap; 1856 1857 /* 1858 * Update rate control statistics for the node. 1859 */ 1860 WPI_UNLOCK(sc); 1861 if ((status & 0xff) != 1) { 1862 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1863 ieee80211_ratectl_tx_complete(vap, ni, 1864 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 1865 } else { 1866 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1867 ieee80211_ratectl_tx_complete(vap, ni, 1868 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 1869 } 1870 1871 ieee80211_tx_complete(ni, m, (status & 0xff) != 1); 1872 WPI_LOCK(sc); 1873 1874 sc->sc_tx_timer = 0; 1875 if (--ring->queued < WPI_TX_RING_LOMARK) { 1876 sc->qfullmsk &= ~(1 << ring->qid); 1877 if (sc->qfullmsk == 0 && 1878 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) { 1879 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1880 wpi_start_locked(ifp); 1881 } 1882 } 1883 1884 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 1885 } 1886 1887 /* 1888 * Process a "command done" firmware notification. This is where we wakeup 1889 * processes waiting for a synchronous command completion. 1890 */ 1891 static void 1892 wpi_cmd_done(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1893 { 1894 struct wpi_tx_ring *ring = &sc->txq[4]; 1895 struct wpi_tx_data *data; 1896 1897 DPRINTF(sc, WPI_DEBUG_CMD, "cmd notification qid=%x idx=%d flags=%x " 1898 "type=%s len=%d\n", desc->qid, desc->idx, 1899 desc->flags, wpi_cmd_str(desc->type), 1900 le32toh(desc->len)); 1901 1902 if ((desc->qid & 7) != 4) 1903 return; /* Not a command ack. */ 1904 1905 data = &ring->data[desc->idx]; 1906 1907 /* If the command was mapped in an mbuf, free it. */ 1908 if (data->m != NULL) { 1909 bus_dmamap_sync(ring->data_dmat, data->map, 1910 BUS_DMASYNC_POSTWRITE); 1911 bus_dmamap_unload(ring->data_dmat, data->map); 1912 m_freem(data->m); 1913 data->m = NULL; 1914 } 1915 1916 sc->flags &= ~WPI_FLAG_BUSY; 1917 wakeup(&ring->cmd[desc->idx]); 1918 } 1919 1920 static void 1921 wpi_notif_intr(struct wpi_softc *sc) 1922 { 1923 struct ifnet *ifp = sc->sc_ifp; 1924 struct ieee80211com *ic = ifp->if_l2com; 1925 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1926 int hw; 1927 1928 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1929 BUS_DMASYNC_POSTREAD); 1930 1931 hw = le32toh(sc->shared->next); 1932 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1933 1934 while (sc->rxq.cur != hw) { 1935 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1936 1937 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 1938 struct wpi_rx_desc *desc; 1939 1940 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1941 BUS_DMASYNC_POSTREAD); 1942 desc = mtod(data->m, struct wpi_rx_desc *); 1943 1944 DPRINTF(sc, WPI_DEBUG_NOTIFY, 1945 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 1946 __func__, sc->rxq.cur, desc->qid, desc->idx, desc->flags, 1947 desc->type, wpi_cmd_str(desc->type), le32toh(desc->len)); 1948 1949 if (!(desc->qid & 0x80)) /* Reply to a command. */ 1950 wpi_cmd_done(sc, desc); 1951 1952 switch (desc->type) { 1953 case WPI_RX_DONE: 1954 /* An 802.11 frame has been received. */ 1955 wpi_rx_done(sc, desc, data); 1956 break; 1957 1958 case WPI_TX_DONE: 1959 /* An 802.11 frame has been transmitted. */ 1960 wpi_tx_done(sc, desc); 1961 break; 1962 1963 case WPI_RX_STATISTICS: 1964 case WPI_BEACON_STATISTICS: 1965 wpi_rx_statistics(sc, desc, data); 1966 break; 1967 1968 case WPI_BEACON_MISSED: 1969 { 1970 struct wpi_beacon_missed *miss = 1971 (struct wpi_beacon_missed *)(desc + 1); 1972 int misses; 1973 1974 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1975 BUS_DMASYNC_POSTREAD); 1976 misses = le32toh(miss->consecutive); 1977 1978 DPRINTF(sc, WPI_DEBUG_STATE, 1979 "%s: beacons missed %d/%d\n", __func__, misses, 1980 le32toh(miss->total)); 1981 1982 if (vap->iv_state == IEEE80211_S_RUN && 1983 (ic->ic_flags & IEEE80211_S_SCAN) == 0) { 1984 if (misses >= vap->iv_bmissthreshold) { 1985 WPI_UNLOCK(sc); 1986 ieee80211_beacon_miss(ic); 1987 WPI_LOCK(sc); 1988 } 1989 } 1990 break; 1991 } 1992 case WPI_UC_READY: 1993 { 1994 struct wpi_ucode_info *uc = 1995 (struct wpi_ucode_info *)(desc + 1); 1996 1997 /* The microcontroller is ready. */ 1998 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1999 BUS_DMASYNC_POSTREAD); 2000 DPRINTF(sc, WPI_DEBUG_RESET, 2001 "microcode alive notification version=%d.%d " 2002 "subtype=%x alive=%x\n", uc->major, uc->minor, 2003 uc->subtype, le32toh(uc->valid)); 2004 2005 if (le32toh(uc->valid) != 1) { 2006 device_printf(sc->sc_dev, 2007 "microcontroller initialization failed\n"); 2008 wpi_stop_locked(sc); 2009 } 2010 /* Save the address of the error log in SRAM. */ 2011 sc->errptr = le32toh(uc->errptr); 2012 break; 2013 } 2014 case WPI_STATE_CHANGED: 2015 { 2016 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2017 BUS_DMASYNC_POSTREAD); 2018 2019 uint32_t *status = (uint32_t *)(desc + 1); 2020 2021 DPRINTF(sc, WPI_DEBUG_STATE, "state changed to %x\n", 2022 le32toh(*status)); 2023 2024 if (le32toh(*status) & 1) { 2025 ieee80211_runtask(ic, &sc->sc_radiooff_task); 2026 return; 2027 } 2028 break; 2029 } 2030 case WPI_START_SCAN: 2031 { 2032 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2033 BUS_DMASYNC_POSTREAD); 2034 #ifdef WPI_DEBUG 2035 struct wpi_start_scan *scan = 2036 (struct wpi_start_scan *)(desc + 1); 2037 DPRINTF(sc, WPI_DEBUG_SCAN, 2038 "%s: scanning channel %d status %x\n", 2039 __func__, scan->chan, le32toh(scan->status)); 2040 #endif 2041 break; 2042 } 2043 case WPI_STOP_SCAN: 2044 { 2045 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 2046 BUS_DMASYNC_POSTREAD); 2047 #ifdef WPI_DEBUG 2048 struct wpi_stop_scan *scan = 2049 (struct wpi_stop_scan *)(desc + 1); 2050 DPRINTF(sc, WPI_DEBUG_SCAN, 2051 "scan finished nchan=%d status=%d chan=%d\n", 2052 scan->nchan, scan->status, scan->chan); 2053 #endif 2054 sc->sc_scan_timer = 0; 2055 WPI_UNLOCK(sc); 2056 ieee80211_scan_next(vap); 2057 WPI_LOCK(sc); 2058 break; 2059 } 2060 } 2061 } 2062 2063 /* Tell the firmware what we have processed. */ 2064 wpi_update_rx_ring(sc); 2065 } 2066 2067 /* 2068 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 2069 * from power-down sleep mode. 2070 */ 2071 static void 2072 wpi_wakeup_intr(struct wpi_softc *sc) 2073 { 2074 int qid; 2075 2076 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 2077 "%s: ucode wakeup from power-down sleep\n", __func__); 2078 2079 /* Wakeup RX and TX rings. */ 2080 if (sc->rxq.update) { 2081 sc->rxq.update = 0; 2082 wpi_update_rx_ring(sc); 2083 } 2084 for (qid = 0; qid < WPI_NTXQUEUES; qid++) { 2085 struct wpi_tx_ring *ring = &sc->txq[qid]; 2086 2087 if (ring->update) { 2088 ring->update = 0; 2089 wpi_update_tx_ring(sc, ring); 2090 } 2091 } 2092 2093 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_MAC_ACCESS_REQ); 2094 } 2095 2096 /* 2097 * Dump the error log of the firmware when a firmware panic occurs. Although 2098 * we can't debug the firmware because it is neither open source nor free, it 2099 * can help us to identify certain classes of problems. 2100 */ 2101 static void 2102 wpi_fatal_intr(struct wpi_softc *sc) 2103 { 2104 struct wpi_fw_dump dump; 2105 uint32_t i, offset, count; 2106 const uint32_t size_errmsg = 2107 (sizeof (wpi_fw_errmsg) / sizeof ((wpi_fw_errmsg)[0])); 2108 2109 /* Check that the error log address is valid. */ 2110 if (sc->errptr < WPI_FW_DATA_BASE || 2111 sc->errptr + sizeof (dump) > 2112 WPI_FW_DATA_BASE + WPI_FW_DATA_MAXSZ) { 2113 printf("%s: bad firmware error log address 0x%08x\n", __func__, 2114 sc->errptr); 2115 return; 2116 } 2117 if (wpi_nic_lock(sc) != 0) { 2118 printf("%s: could not read firmware error log\n", __func__); 2119 return; 2120 } 2121 /* Read number of entries in the log. */ 2122 count = wpi_mem_read(sc, sc->errptr); 2123 if (count == 0 || count * sizeof (dump) > WPI_FW_DATA_MAXSZ) { 2124 printf("%s: invalid count field (count = %u)\n", __func__, 2125 count); 2126 wpi_nic_unlock(sc); 2127 return; 2128 } 2129 /* Skip "count" field. */ 2130 offset = sc->errptr + sizeof (uint32_t); 2131 printf("firmware error log (count = %u):\n", count); 2132 for (i = 0; i < count; i++) { 2133 wpi_mem_read_region_4(sc, offset, (uint32_t *)&dump, 2134 sizeof (dump) / sizeof (uint32_t)); 2135 2136 printf(" error type = \"%s\" (0x%08X)\n", 2137 (dump.desc < size_errmsg) ? 2138 wpi_fw_errmsg[dump.desc] : "UNKNOWN", 2139 dump.desc); 2140 printf(" error data = 0x%08X\n", 2141 dump.data); 2142 printf(" branch link = 0x%08X%08X\n", 2143 dump.blink[0], dump.blink[1]); 2144 printf(" interrupt link = 0x%08X%08X\n", 2145 dump.ilink[0], dump.ilink[1]); 2146 printf(" time = %u\n", dump.time); 2147 2148 offset += sizeof (dump); 2149 } 2150 wpi_nic_unlock(sc); 2151 /* Dump driver status (TX and RX rings) while we're here. */ 2152 printf("driver status:\n"); 2153 for (i = 0; i < WPI_NTXQUEUES; i++) { 2154 struct wpi_tx_ring *ring = &sc->txq[i]; 2155 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 2156 i, ring->qid, ring->cur, ring->queued); 2157 } 2158 printf(" rx ring: cur=%d\n", sc->rxq.cur); 2159 } 2160 2161 static void 2162 wpi_intr(void *arg) 2163 { 2164 struct wpi_softc *sc = arg; 2165 struct ifnet *ifp = sc->sc_ifp; 2166 uint32_t r1, r2; 2167 2168 WPI_LOCK(sc); 2169 2170 /* Disable interrupts. */ 2171 WPI_WRITE(sc, WPI_INT_MASK, 0); 2172 2173 r1 = WPI_READ(sc, WPI_INT); 2174 2175 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) { 2176 WPI_UNLOCK(sc); 2177 return; /* Hardware gone! */ 2178 } 2179 2180 r2 = WPI_READ(sc, WPI_FH_INT); 2181 2182 DPRINTF(sc, WPI_DEBUG_INTR, "%s: reg1=0x%08x reg2=0x%08x\n", __func__, 2183 r1, r2); 2184 2185 if (r1 == 0 && r2 == 0) 2186 goto done; /* Interrupt not for us. */ 2187 2188 /* Acknowledge interrupts. */ 2189 WPI_WRITE(sc, WPI_INT, r1); 2190 WPI_WRITE(sc, WPI_FH_INT, r2); 2191 2192 if (r1 & (WPI_INT_SW_ERR | WPI_INT_HW_ERR)) { 2193 struct ieee80211com *ic = ifp->if_l2com; 2194 2195 device_printf(sc->sc_dev, "fatal firmware error\n"); 2196 wpi_fatal_intr(sc); 2197 DPRINTF(sc, WPI_DEBUG_HW, 2198 "(%s)\n", (r1 & WPI_INT_SW_ERR) ? "(Software Error)" : 2199 "(Hardware Error)"); 2200 ieee80211_runtask(ic, &sc->sc_reinittask); 2201 sc->flags &= ~WPI_FLAG_BUSY; 2202 WPI_UNLOCK(sc); 2203 return; 2204 } 2205 2206 if ((r1 & (WPI_INT_FH_RX | WPI_INT_SW_RX)) || 2207 (r2 & WPI_FH_INT_RX)) 2208 wpi_notif_intr(sc); 2209 2210 if (r1 & WPI_INT_ALIVE) 2211 wakeup(sc); /* Firmware is alive. */ 2212 2213 if (r1 & WPI_INT_WAKEUP) 2214 wpi_wakeup_intr(sc); 2215 2216 done: 2217 /* Re-enable interrupts. */ 2218 if (ifp->if_flags & IFF_UP) 2219 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 2220 2221 WPI_UNLOCK(sc); 2222 } 2223 2224 static int 2225 wpi_cmd2(struct wpi_softc *sc, struct wpi_buf *buf) 2226 { 2227 struct ifnet *ifp = sc->sc_ifp; 2228 struct ieee80211com *ic = ifp->if_l2com; 2229 struct ieee80211_frame *wh; 2230 struct wpi_tx_cmd *cmd; 2231 struct wpi_tx_data *data; 2232 struct wpi_tx_desc *desc; 2233 struct wpi_tx_ring *ring; 2234 struct mbuf *m1; 2235 bus_dma_segment_t *seg, segs[WPI_MAX_SCATTER]; 2236 int error, i, hdrspace, nsegs, totlen; 2237 2238 WPI_LOCK_ASSERT(sc); 2239 2240 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2241 2242 wh = mtod(buf->m, struct ieee80211_frame *); 2243 hdrspace = ieee80211_anyhdrspace(ic, wh); 2244 totlen = buf->m->m_pkthdr.len; 2245 2246 ring = &sc->txq[buf->ac]; 2247 desc = &ring->desc[ring->cur]; 2248 data = &ring->data[ring->cur]; 2249 2250 /* Prepare TX firmware command. */ 2251 cmd = &ring->cmd[ring->cur]; 2252 cmd->code = buf->code; 2253 cmd->flags = 0; 2254 cmd->qid = ring->qid; 2255 cmd->idx = ring->cur; 2256 2257 memcpy(cmd->data, buf->data, buf->size); 2258 2259 /* Save and trim IEEE802.11 header. */ 2260 memcpy((uint8_t *)(cmd->data + buf->size), wh, hdrspace); 2261 m_adj(buf->m, hdrspace); 2262 2263 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, buf->m, 2264 segs, &nsegs, BUS_DMA_NOWAIT); 2265 if (error != 0 && error != EFBIG) { 2266 device_printf(sc->sc_dev, 2267 "%s: can't map mbuf (error %d)\n", __func__, error); 2268 m_freem(buf->m); 2269 return error; 2270 } 2271 if (error != 0) { 2272 /* Too many DMA segments, linearize mbuf. */ 2273 m1 = m_collapse(buf->m, M_NOWAIT, WPI_MAX_SCATTER); 2274 if (m1 == NULL) { 2275 device_printf(sc->sc_dev, 2276 "%s: could not defrag mbuf\n", __func__); 2277 m_freem(buf->m); 2278 return ENOBUFS; 2279 } 2280 buf->m = m1; 2281 2282 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2283 buf->m, segs, &nsegs, BUS_DMA_NOWAIT); 2284 if (error != 0) { 2285 device_printf(sc->sc_dev, 2286 "%s: can't map mbuf (error %d)\n", __func__, error); 2287 m_freem(buf->m); 2288 return error; 2289 } 2290 } 2291 2292 data->m = buf->m; 2293 data->ni = buf->ni; 2294 2295 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 2296 __func__, ring->qid, ring->cur, totlen, nsegs); 2297 2298 /* Fill TX descriptor. */ 2299 desc->nsegs = WPI_PAD32(totlen) << 4 | (1 + nsegs); 2300 /* First DMA segment is used by the TX command. */ 2301 desc->segs[0].addr = htole32(data->cmd_paddr); 2302 desc->segs[0].len = htole32(4 + buf->size + hdrspace); 2303 /* Other DMA segments are for data payload. */ 2304 seg = &segs[0]; 2305 for (i = 1; i <= nsegs; i++) { 2306 desc->segs[i].addr = htole32(seg->ds_addr); 2307 desc->segs[i].len = htole32(seg->ds_len); 2308 seg++; 2309 } 2310 2311 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2312 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2313 BUS_DMASYNC_PREWRITE); 2314 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2315 BUS_DMASYNC_PREWRITE); 2316 2317 /* Kick TX ring. */ 2318 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2319 wpi_update_tx_ring(sc, ring); 2320 2321 /* Mark TX ring as full if we reach a certain threshold. */ 2322 if (++ring->queued > WPI_TX_RING_HIMARK) 2323 sc->qfullmsk |= 1 << ring->qid; 2324 2325 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2326 2327 return 0; 2328 } 2329 2330 /* 2331 * Construct the data packet for a transmit buffer. 2332 */ 2333 static int 2334 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 2335 { 2336 const struct ieee80211_txparam *tp; 2337 struct ieee80211vap *vap = ni->ni_vap; 2338 struct ieee80211com *ic = ni->ni_ic; 2339 struct wpi_node *wn = (void *)ni; 2340 struct ieee80211_channel *chan; 2341 struct ieee80211_frame *wh; 2342 struct ieee80211_key *k = NULL; 2343 struct wpi_cmd_data tx; 2344 struct wpi_buf tx_data; 2345 uint32_t flags; 2346 uint16_t qos; 2347 uint8_t tid, type; 2348 int ac, error, rate, ismcast, hdrlen, totlen; 2349 2350 wh = mtod(m, struct ieee80211_frame *); 2351 hdrlen = ieee80211_anyhdrsize(wh); 2352 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2353 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 2354 2355 /* Select EDCA Access Category and TX ring for this frame. */ 2356 if (IEEE80211_QOS_HAS_SEQ(wh)) { 2357 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 2358 tid = qos & IEEE80211_QOS_TID; 2359 } else { 2360 qos = 0; 2361 tid = 0; 2362 } 2363 ac = M_WME_GETAC(m); 2364 2365 chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ? 2366 ni->ni_chan : ic->ic_curchan; 2367 tp = &vap->iv_txparms[ieee80211_chan2mode(chan)]; 2368 2369 /* Choose a TX rate index. */ 2370 if (type == IEEE80211_FC0_TYPE_MGT) 2371 rate = tp->mgmtrate; 2372 else if (ismcast) 2373 rate = tp->mcastrate; 2374 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 2375 rate = tp->ucastrate; 2376 else if (m->m_flags & M_EAPOL) 2377 rate = tp->mgmtrate; 2378 else { 2379 /* XXX pass pktlen */ 2380 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2381 rate = ni->ni_txrate; 2382 } 2383 2384 /* Encrypt the frame if need be. */ 2385 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 2386 /* Retrieve key for TX. */ 2387 k = ieee80211_crypto_encap(ni, m); 2388 if (k == NULL) { 2389 error = ENOBUFS; 2390 goto fail; 2391 } 2392 /* 802.11 header may have moved. */ 2393 wh = mtod(m, struct ieee80211_frame *); 2394 } 2395 totlen = m->m_pkthdr.len - (hdrlen & 3); 2396 2397 if (ieee80211_radiotap_active_vap(vap)) { 2398 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2399 2400 tap->wt_flags = IEEE80211_RADIOTAP_F_DATAPAD; 2401 tap->wt_rate = rate; 2402 if (k != NULL) 2403 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2404 2405 ieee80211_radiotap_tx(vap, m); 2406 } 2407 2408 flags = 0; 2409 if (!ismcast) { 2410 /* Unicast frame, check if an ACK is expected. */ 2411 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 2412 IEEE80211_QOS_ACKPOLICY_NOACK) 2413 flags |= WPI_TX_NEED_ACK; 2414 } 2415 2416 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 2417 flags |= WPI_TX_MORE_FRAG; /* Cannot happen yet. */ 2418 2419 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 2420 if (!ismcast) { 2421 /* NB: Group frames are sent using CCK in 802.11b/g. */ 2422 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2423 flags |= WPI_TX_NEED_RTS; 2424 } else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 2425 WPI_RATE_IS_OFDM(rate)) { 2426 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 2427 flags |= WPI_TX_NEED_CTS; 2428 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 2429 flags |= WPI_TX_NEED_RTS; 2430 } 2431 2432 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2433 flags |= WPI_TX_FULL_TXOP; 2434 } 2435 2436 memset(&tx, 0, sizeof (struct wpi_cmd_data)); 2437 if (type == IEEE80211_FC0_TYPE_MGT) { 2438 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2439 2440 /* Tell HW to set timestamp in probe responses. */ 2441 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2442 flags |= WPI_TX_INSERT_TSTAMP; 2443 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2444 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2445 tx.timeout = htole16(3); 2446 else 2447 tx.timeout = htole16(2); 2448 } 2449 2450 if (ismcast || type != IEEE80211_FC0_TYPE_DATA) 2451 tx.id = WPI_ID_BROADCAST; 2452 else { 2453 if (wn->id == WPI_ID_UNDEFINED && 2454 (vap->iv_opmode == IEEE80211_M_IBSS || 2455 vap->iv_opmode == IEEE80211_M_AHDEMO)) { 2456 error = wpi_add_ibss_node(sc, ni); 2457 if (error != 0) { 2458 device_printf(sc->sc_dev, 2459 "%s: could not add IBSS node, error %d\n", 2460 __func__, error); 2461 goto fail; 2462 } 2463 } 2464 2465 if (wn->id == WPI_ID_UNDEFINED) { 2466 device_printf(sc->sc_dev, 2467 "%s: undefined node id\n", __func__); 2468 error = EINVAL; 2469 goto fail; 2470 } 2471 2472 tx.id = wn->id; 2473 } 2474 2475 if (type != IEEE80211_FC0_TYPE_MGT) 2476 tx.data_ntries = tp->maxretry; 2477 2478 tx.len = htole16(totlen); 2479 tx.flags = htole32(flags); 2480 tx.plcp = rate2plcp(rate); 2481 tx.tid = tid; 2482 tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2483 tx.ofdm_mask = 0xff; 2484 tx.cck_mask = 0x0f; 2485 tx.rts_ntries = 7; 2486 2487 if (k != NULL && k->wk_cipher->ic_cipher == IEEE80211_CIPHER_AES_CCM) { 2488 if (!(k->wk_flags & IEEE80211_KEY_SWCRYPT)) { 2489 tx.security = WPI_CIPHER_CCMP; 2490 memcpy(tx.key, k->wk_key, k->wk_keylen); 2491 } 2492 } 2493 2494 tx_data.data = &tx; 2495 tx_data.ni = ni; 2496 tx_data.m = m; 2497 tx_data.size = sizeof(tx); 2498 tx_data.code = WPI_CMD_TX_DATA; 2499 tx_data.ac = ac; 2500 2501 return wpi_cmd2(sc, &tx_data); 2502 2503 fail: m_freem(m); 2504 return error; 2505 } 2506 2507 static int 2508 wpi_tx_data_raw(struct wpi_softc *sc, struct mbuf *m, struct ieee80211_node *ni, 2509 const struct ieee80211_bpf_params *params) 2510 { 2511 struct ieee80211vap *vap = ni->ni_vap; 2512 struct ieee80211_frame *wh; 2513 struct wpi_cmd_data tx; 2514 struct wpi_buf tx_data; 2515 uint32_t flags; 2516 uint8_t type; 2517 int ac, rate, hdrlen, totlen; 2518 2519 wh = mtod(m, struct ieee80211_frame *); 2520 hdrlen = ieee80211_anyhdrsize(wh); 2521 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 2522 totlen = m->m_pkthdr.len - (hdrlen & 3); 2523 2524 ac = params->ibp_pri & 3; 2525 2526 /* Choose a TX rate index. */ 2527 rate = params->ibp_rate0; 2528 2529 flags = 0; 2530 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 2531 flags |= WPI_TX_NEED_ACK; 2532 if (params->ibp_flags & IEEE80211_BPF_RTS) 2533 flags |= WPI_TX_NEED_RTS; 2534 if (params->ibp_flags & IEEE80211_BPF_CTS) 2535 flags |= WPI_TX_NEED_CTS; 2536 if (flags & (WPI_TX_NEED_RTS | WPI_TX_NEED_CTS)) 2537 flags |= WPI_TX_FULL_TXOP; 2538 2539 if (ieee80211_radiotap_active_vap(vap)) { 2540 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2541 2542 tap->wt_flags = 0; 2543 tap->wt_rate = rate; 2544 if (params->ibp_flags & IEEE80211_BPF_DATAPAD) 2545 tap->wt_flags |= IEEE80211_RADIOTAP_F_DATAPAD; 2546 2547 ieee80211_radiotap_tx(vap, m); 2548 } 2549 2550 memset(&tx, 0, sizeof (struct wpi_cmd_data)); 2551 if (type == IEEE80211_FC0_TYPE_MGT) { 2552 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2553 2554 /* Tell HW to set timestamp in probe responses. */ 2555 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2556 flags |= WPI_TX_INSERT_TSTAMP; 2557 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2558 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2559 tx.timeout = htole16(3); 2560 else 2561 tx.timeout = htole16(2); 2562 } 2563 2564 tx.len = htole16(totlen); 2565 tx.flags = htole32(flags); 2566 tx.plcp = rate2plcp(rate); 2567 tx.id = WPI_ID_BROADCAST; 2568 tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2569 tx.rts_ntries = params->ibp_try1; 2570 tx.data_ntries = params->ibp_try0; 2571 2572 tx_data.data = &tx; 2573 tx_data.ni = ni; 2574 tx_data.m = m; 2575 tx_data.size = sizeof(tx); 2576 tx_data.code = WPI_CMD_TX_DATA; 2577 tx_data.ac = ac; 2578 2579 return wpi_cmd2(sc, &tx_data); 2580 } 2581 2582 static int 2583 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2584 const struct ieee80211_bpf_params *params) 2585 { 2586 struct ieee80211com *ic = ni->ni_ic; 2587 struct ifnet *ifp = ic->ic_ifp; 2588 struct wpi_softc *sc = ifp->if_softc; 2589 int error = 0; 2590 2591 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2592 2593 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2594 ieee80211_free_node(ni); 2595 m_freem(m); 2596 return ENETDOWN; 2597 } 2598 2599 WPI_LOCK(sc); 2600 if (params == NULL) { 2601 /* 2602 * Legacy path; interpret frame contents to decide 2603 * precisely how to send the frame. 2604 */ 2605 error = wpi_tx_data(sc, m, ni); 2606 } else { 2607 /* 2608 * Caller supplied explicit parameters to use in 2609 * sending the frame. 2610 */ 2611 error = wpi_tx_data_raw(sc, m, ni, params); 2612 } 2613 WPI_UNLOCK(sc); 2614 2615 if (error != 0) { 2616 /* NB: m is reclaimed on tx failure */ 2617 ieee80211_free_node(ni); 2618 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2619 2620 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 2621 2622 return error; 2623 } 2624 2625 sc->sc_tx_timer = 5; 2626 2627 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2628 2629 return 0; 2630 } 2631 2632 /** 2633 * Process data waiting to be sent on the IFNET output queue 2634 */ 2635 static void 2636 wpi_start(struct ifnet *ifp) 2637 { 2638 struct wpi_softc *sc = ifp->if_softc; 2639 2640 WPI_LOCK(sc); 2641 wpi_start_locked(ifp); 2642 WPI_UNLOCK(sc); 2643 } 2644 2645 static void 2646 wpi_start_locked(struct ifnet *ifp) 2647 { 2648 struct wpi_softc *sc = ifp->if_softc; 2649 struct ieee80211_node *ni; 2650 struct mbuf *m; 2651 2652 WPI_LOCK_ASSERT(sc); 2653 2654 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: called\n", __func__); 2655 2656 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 2657 (ifp->if_drv_flags & IFF_DRV_OACTIVE)) 2658 return; 2659 2660 for (;;) { 2661 if (sc->qfullmsk != 0) { 2662 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2663 break; 2664 } 2665 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2666 if (m == NULL) 2667 break; 2668 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 2669 if (wpi_tx_data(sc, m, ni) != 0) { 2670 WPI_UNLOCK(sc); 2671 ieee80211_free_node(ni); 2672 WPI_LOCK(sc); 2673 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2674 } else 2675 sc->sc_tx_timer = 5; 2676 } 2677 2678 DPRINTF(sc, WPI_DEBUG_XMIT, "%s: done\n", __func__); 2679 } 2680 2681 static void 2682 wpi_watchdog_rfkill(void *arg) 2683 { 2684 struct wpi_softc *sc = arg; 2685 struct ifnet *ifp = sc->sc_ifp; 2686 struct ieee80211com *ic = ifp->if_l2com; 2687 2688 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "RFkill Watchdog: tick\n"); 2689 2690 /* No need to lock firmware memory. */ 2691 if ((wpi_prph_read(sc, WPI_APMG_RFKILL) & 0x1) == 0) { 2692 /* Radio kill switch is still off. */ 2693 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 2694 sc); 2695 } else 2696 ieee80211_runtask(ic, &sc->sc_radioon_task); 2697 } 2698 2699 /** 2700 * Called every second, wpi_watchdog used by the watch dog timer 2701 * to check that the card is still alive 2702 */ 2703 static void 2704 wpi_watchdog(void *arg) 2705 { 2706 struct wpi_softc *sc = arg; 2707 struct ifnet *ifp = sc->sc_ifp; 2708 struct ieee80211com *ic = ifp->if_l2com; 2709 2710 DPRINTF(sc, WPI_DEBUG_WATCHDOG, "Watchdog: tick\n"); 2711 2712 if (sc->sc_tx_timer > 0) { 2713 if (--sc->sc_tx_timer == 0) { 2714 if_printf(ifp, "device timeout\n"); 2715 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2716 ieee80211_runtask(ic, &sc->sc_reinittask); 2717 } 2718 } 2719 2720 if (sc->sc_scan_timer > 0) { 2721 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2722 if (--sc->sc_scan_timer == 0 && vap != NULL) { 2723 if_printf(ifp, "scan timeout\n"); 2724 ieee80211_cancel_scan(vap); 2725 ieee80211_runtask(ic, &sc->sc_reinittask); 2726 } 2727 } 2728 2729 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2730 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2731 } 2732 2733 static int 2734 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2735 { 2736 struct wpi_softc *sc = ifp->if_softc; 2737 struct ieee80211com *ic = ifp->if_l2com; 2738 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2739 struct ifreq *ifr = (struct ifreq *) data; 2740 int error = 0, startall = 0, stop = 0; 2741 2742 switch (cmd) { 2743 case SIOCGIFADDR: 2744 error = ether_ioctl(ifp, cmd, data); 2745 break; 2746 case SIOCSIFFLAGS: 2747 WPI_LOCK(sc); 2748 if (ifp->if_flags & IFF_UP) { 2749 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2750 wpi_init_locked(sc); 2751 if (WPI_READ(sc, WPI_GP_CNTRL) & 2752 WPI_GP_CNTRL_RFKILL) 2753 startall = 1; 2754 else 2755 stop = 1; 2756 } 2757 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2758 wpi_stop_locked(sc); 2759 WPI_UNLOCK(sc); 2760 if (startall) 2761 ieee80211_start_all(ic); 2762 else if (vap != NULL && stop) 2763 ieee80211_stop(vap); 2764 break; 2765 case SIOCGIFMEDIA: 2766 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2767 break; 2768 default: 2769 error = EINVAL; 2770 break; 2771 } 2772 return error; 2773 } 2774 2775 /* 2776 * Send a command to the firmware. 2777 */ 2778 static int 2779 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, size_t size, 2780 int async) 2781 { 2782 struct wpi_tx_ring *ring = &sc->txq[4]; 2783 struct wpi_tx_desc *desc; 2784 struct wpi_tx_data *data; 2785 struct wpi_tx_cmd *cmd; 2786 struct mbuf *m; 2787 bus_addr_t paddr; 2788 int totlen, error; 2789 2790 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 2791 2792 if (async == 0) 2793 WPI_LOCK_ASSERT(sc); 2794 2795 DPRINTF(sc, WPI_DEBUG_CMD, "wpi_cmd %s size %zu async %d\n", 2796 wpi_cmd_str(code), size, async); 2797 2798 if (sc->flags & WPI_FLAG_BUSY) { 2799 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2800 __func__, code); 2801 return EAGAIN; 2802 } 2803 sc->flags |= WPI_FLAG_BUSY; 2804 2805 desc = &ring->desc[ring->cur]; 2806 data = &ring->data[ring->cur]; 2807 totlen = 4 + size; 2808 2809 if (size > sizeof cmd->data) { 2810 /* Command is too large to fit in a descriptor. */ 2811 if (totlen > MCLBYTES) 2812 return EINVAL; 2813 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 2814 if (m == NULL) 2815 return ENOMEM; 2816 cmd = mtod(m, struct wpi_tx_cmd *); 2817 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 2818 totlen, wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 2819 if (error != 0) { 2820 m_freem(m); 2821 return error; 2822 } 2823 data->m = m; 2824 } else { 2825 cmd = &ring->cmd[ring->cur]; 2826 paddr = data->cmd_paddr; 2827 } 2828 2829 cmd->code = code; 2830 cmd->flags = 0; 2831 cmd->qid = ring->qid; 2832 cmd->idx = ring->cur; 2833 memcpy(cmd->data, buf, size); 2834 2835 desc->nsegs = 1 + (WPI_PAD32(size) << 4); 2836 desc->segs[0].addr = htole32(paddr); 2837 desc->segs[0].len = htole32(totlen); 2838 2839 if (size > sizeof cmd->data) { 2840 bus_dmamap_sync(ring->data_dmat, data->map, 2841 BUS_DMASYNC_PREWRITE); 2842 } else { 2843 bus_dmamap_sync(ring->data_dmat, ring->cmd_dma.map, 2844 BUS_DMASYNC_PREWRITE); 2845 } 2846 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2847 BUS_DMASYNC_PREWRITE); 2848 2849 /* Kick command ring. */ 2850 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2851 wpi_update_tx_ring(sc, ring); 2852 2853 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 2854 2855 if (async) { 2856 sc->flags &= ~WPI_FLAG_BUSY; 2857 return 0; 2858 } 2859 2860 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2861 } 2862 2863 /* 2864 * Configure HW multi-rate retries. 2865 */ 2866 static int 2867 wpi_mrr_setup(struct wpi_softc *sc) 2868 { 2869 struct ifnet *ifp = sc->sc_ifp; 2870 struct ieee80211com *ic = ifp->if_l2com; 2871 struct wpi_mrr_setup mrr; 2872 int i, error; 2873 2874 /* CCK rates (not used with 802.11a). */ 2875 for (i = WPI_RIDX_CCK1; i <= WPI_RIDX_CCK11; i++) { 2876 mrr.rates[i].flags = 0; 2877 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2878 /* Fallback to the immediate lower CCK rate (if any.) */ 2879 mrr.rates[i].next = 2880 (i == WPI_RIDX_CCK1) ? WPI_RIDX_CCK1 : i - 1; 2881 /* Try one time at this rate before falling back to "next". */ 2882 mrr.rates[i].ntries = 1; 2883 } 2884 /* OFDM rates (not used with 802.11b). */ 2885 for (i = WPI_RIDX_OFDM6; i <= WPI_RIDX_OFDM54; i++) { 2886 mrr.rates[i].flags = 0; 2887 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2888 /* Fallback to the immediate lower rate (if any.) */ 2889 /* We allow fallback from OFDM/6 to CCK/2 in 11b/g mode. */ 2890 mrr.rates[i].next = (i == WPI_RIDX_OFDM6) ? 2891 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2892 WPI_RIDX_OFDM6 : WPI_RIDX_CCK2) : 2893 i - 1; 2894 /* Try one time at this rate before falling back to "next". */ 2895 mrr.rates[i].ntries = 1; 2896 } 2897 /* Setup MRR for control frames. */ 2898 mrr.which = htole32(WPI_MRR_CTL); 2899 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2900 if (error != 0) { 2901 device_printf(sc->sc_dev, 2902 "could not setup MRR for control frames\n"); 2903 return error; 2904 } 2905 /* Setup MRR for data frames. */ 2906 mrr.which = htole32(WPI_MRR_DATA); 2907 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2908 if (error != 0) { 2909 device_printf(sc->sc_dev, 2910 "could not setup MRR for data frames\n"); 2911 return error; 2912 } 2913 return 0; 2914 } 2915 2916 static int 2917 wpi_add_node(struct wpi_softc *sc, struct ieee80211_node *ni) 2918 { 2919 struct ieee80211com *ic = ni->ni_ic; 2920 struct wpi_node *wn = (void *)ni; 2921 struct wpi_node_info node; 2922 2923 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 2924 2925 if (wn->id == WPI_ID_UNDEFINED) 2926 return EINVAL; 2927 2928 memset(&node, 0, sizeof node); 2929 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_bssid); 2930 node.id = wn->id; 2931 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2932 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 2933 node.action = htole32(WPI_ACTION_SET_RATE); 2934 node.antenna = WPI_ANTENNA_BOTH; 2935 2936 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2937 } 2938 2939 /* 2940 * Broadcast node is used to send group-addressed and management frames. 2941 */ 2942 static int 2943 wpi_add_broadcast_node(struct wpi_softc *sc, int async) 2944 { 2945 struct ifnet *ifp = sc->sc_ifp; 2946 struct ieee80211com *ic = ifp->if_l2com; 2947 struct wpi_node_info node; 2948 2949 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 2950 2951 memset(&node, 0, sizeof node); 2952 IEEE80211_ADDR_COPY(node.macaddr, ifp->if_broadcastaddr); 2953 node.id = WPI_ID_BROADCAST; 2954 node.plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2955 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 2956 node.action = htole32(WPI_ACTION_SET_RATE); 2957 node.antenna = WPI_ANTENNA_BOTH; 2958 2959 return wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, async); 2960 } 2961 2962 static int 2963 wpi_add_ibss_node(struct wpi_softc *sc, struct ieee80211_node *ni) 2964 { 2965 struct wpi_node *wn = (void *)ni; 2966 2967 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 2968 2969 if (wn->id != WPI_ID_UNDEFINED) 2970 return EINVAL; 2971 2972 wn->id = alloc_unrl(sc->sc_unr); 2973 2974 if (wn->id == (uint8_t)-1) 2975 return ENOBUFS; 2976 2977 return wpi_add_node(sc, ni); 2978 } 2979 2980 static void 2981 wpi_del_node(struct wpi_softc *sc, struct ieee80211_node *ni) 2982 { 2983 struct wpi_node *wn = (void *)ni; 2984 struct wpi_cmd_del_node node; 2985 int error; 2986 2987 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 2988 2989 if (wn->id == WPI_ID_UNDEFINED) { 2990 device_printf(sc->sc_dev, "%s: undefined node id passed\n", 2991 __func__); 2992 return; 2993 } 2994 2995 memset(&node, 0, sizeof node); 2996 IEEE80211_ADDR_COPY(node.macaddr, ni->ni_bssid); 2997 node.count = 1; 2998 2999 error = wpi_cmd(sc, WPI_CMD_DEL_NODE, &node, sizeof node, 1); 3000 if (error != 0) { 3001 device_printf(sc->sc_dev, 3002 "%s: could not delete node %u, error %d\n", __func__, 3003 wn->id, error); 3004 } 3005 } 3006 3007 static int 3008 wpi_updateedca(struct ieee80211com *ic) 3009 { 3010 #define WPI_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 3011 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3012 struct wpi_edca_params cmd; 3013 int aci, error; 3014 3015 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3016 3017 memset(&cmd, 0, sizeof cmd); 3018 cmd.flags = htole32(WPI_EDCA_UPDATE); 3019 for (aci = 0; aci < WME_NUM_AC; aci++) { 3020 const struct wmeParams *ac = 3021 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 3022 cmd.ac[aci].aifsn = ac->wmep_aifsn; 3023 cmd.ac[aci].cwmin = htole16(WPI_EXP2(ac->wmep_logcwmin)); 3024 cmd.ac[aci].cwmax = htole16(WPI_EXP2(ac->wmep_logcwmax)); 3025 cmd.ac[aci].txoplimit = 3026 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 3027 3028 DPRINTF(sc, WPI_DEBUG_EDCA, 3029 "setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 3030 "txoplimit=%d\n", aci, cmd.ac[aci].aifsn, 3031 cmd.ac[aci].cwmin, cmd.ac[aci].cwmax, 3032 cmd.ac[aci].txoplimit); 3033 } 3034 IEEE80211_UNLOCK(ic); 3035 WPI_LOCK(sc); 3036 error = wpi_cmd(sc, WPI_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 3037 WPI_UNLOCK(sc); 3038 IEEE80211_LOCK(ic); 3039 3040 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3041 3042 return error; 3043 #undef WPI_EXP2 3044 } 3045 3046 static void 3047 wpi_set_promisc(struct wpi_softc *sc) 3048 { 3049 struct ifnet *ifp = sc->sc_ifp; 3050 uint32_t promisc_filter; 3051 3052 promisc_filter = WPI_FILTER_PROMISC | WPI_FILTER_CTL; 3053 3054 if (ifp->if_flags & IFF_PROMISC) 3055 sc->rxon.filter |= htole32(promisc_filter); 3056 else 3057 sc->rxon.filter &= ~htole32(promisc_filter); 3058 } 3059 3060 static void 3061 wpi_update_promisc(struct ifnet *ifp) 3062 { 3063 struct wpi_softc *sc = ifp->if_softc; 3064 3065 wpi_set_promisc(sc); 3066 3067 WPI_LOCK(sc); 3068 if (wpi_send_rxon(sc, 1, 1) != 0) { 3069 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3070 __func__); 3071 } 3072 WPI_UNLOCK(sc); 3073 } 3074 3075 static void 3076 wpi_update_mcast(struct ifnet *ifp) 3077 { 3078 /* Ignore */ 3079 } 3080 3081 static void 3082 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 3083 { 3084 struct wpi_cmd_led led; 3085 3086 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3087 3088 led.which = which; 3089 led.unit = htole32(100000); /* on/off in unit of 100ms */ 3090 led.off = off; 3091 led.on = on; 3092 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 3093 } 3094 3095 static int 3096 wpi_set_timing(struct wpi_softc *sc, struct ieee80211_node *ni) 3097 { 3098 struct wpi_cmd_timing cmd; 3099 uint64_t val, mod; 3100 3101 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3102 3103 memset(&cmd, 0, sizeof cmd); 3104 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 3105 cmd.bintval = htole16(ni->ni_intval); 3106 cmd.lintval = htole16(10); 3107 3108 /* Compute remaining time until next beacon. */ 3109 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 3110 mod = le64toh(cmd.tstamp) % val; 3111 cmd.binitval = htole32((uint32_t)(val - mod)); 3112 3113 DPRINTF(sc, WPI_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 3114 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 3115 3116 return wpi_cmd(sc, WPI_CMD_TIMING, &cmd, sizeof cmd, 1); 3117 } 3118 3119 /* 3120 * This function is called periodically (every 60 seconds) to adjust output 3121 * power to temperature changes. 3122 */ 3123 static void 3124 wpi_power_calibration(struct wpi_softc *sc) 3125 { 3126 int temp; 3127 3128 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3129 3130 /* Update sensor data. */ 3131 temp = (int)WPI_READ(sc, WPI_UCODE_GP2); 3132 DPRINTF(sc, WPI_DEBUG_TEMP, "Temp in calibration is: %d\n", temp); 3133 3134 /* Sanity-check read value. */ 3135 if (temp < -260 || temp > 25) { 3136 /* This can't be correct, ignore. */ 3137 DPRINTF(sc, WPI_DEBUG_TEMP, 3138 "out-of-range temperature reported: %d\n", temp); 3139 return; 3140 } 3141 3142 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d->%d\n", sc->temp, temp); 3143 3144 /* Adjust Tx power if need be. */ 3145 if (abs(temp - sc->temp) <= 6) 3146 return; 3147 3148 sc->temp = temp; 3149 3150 if (wpi_set_txpower(sc, 1) != 0) { 3151 /* just warn, too bad for the automatic calibration... */ 3152 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3153 } 3154 } 3155 3156 /* 3157 * Set TX power for current channel. 3158 */ 3159 static int 3160 wpi_set_txpower(struct wpi_softc *sc, int async) 3161 { 3162 struct ifnet *ifp = sc->sc_ifp; 3163 struct ieee80211com *ic = ifp->if_l2com; 3164 struct ieee80211_channel *ch; 3165 struct wpi_power_group *group; 3166 struct wpi_cmd_txpower cmd; 3167 uint8_t chan; 3168 int idx, i; 3169 3170 /* Retrieve current channel from last RXON. */ 3171 chan = sc->rxon.chan; 3172 ch = &ic->ic_channels[chan]; 3173 3174 /* Find the TX power group to which this channel belongs. */ 3175 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3176 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3177 if (chan <= group->chan) 3178 break; 3179 } else 3180 group = &sc->groups[0]; 3181 3182 memset(&cmd, 0, sizeof cmd); 3183 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1; 3184 cmd.chan = htole16(chan); 3185 3186 /* Set TX power for all OFDM and CCK rates. */ 3187 for (i = 0; i <= WPI_RIDX_MAX ; i++) { 3188 /* Retrieve TX power for this channel/rate. */ 3189 idx = wpi_get_power_index(sc, group, ch, i); 3190 3191 cmd.rates[i].plcp = wpi_ridx_to_plcp[i]; 3192 3193 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 3194 cmd.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 3195 cmd.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 3196 } else { 3197 cmd.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 3198 cmd.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 3199 } 3200 DPRINTF(sc, WPI_DEBUG_TEMP, 3201 "chan %d/ridx %d: power index %d\n", chan, i, idx); 3202 } 3203 3204 return wpi_cmd(sc, WPI_CMD_TXPOWER, &cmd, sizeof cmd, async); 3205 } 3206 3207 /* 3208 * Determine Tx power index for a given channel/rate combination. 3209 * This takes into account the regulatory information from EEPROM and the 3210 * current temperature. 3211 */ 3212 static int 3213 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3214 struct ieee80211_channel *c, int ridx) 3215 { 3216 /* Fixed-point arithmetic division using a n-bit fractional part. */ 3217 #define fdivround(a, b, n) \ 3218 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3219 3220 /* Linear interpolation. */ 3221 #define interpolate(x, x1, y1, x2, y2, n) \ 3222 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3223 3224 struct ifnet *ifp = sc->sc_ifp; 3225 struct ieee80211com *ic = ifp->if_l2com; 3226 struct wpi_power_sample *sample; 3227 int pwr, idx; 3228 u_int chan; 3229 3230 /* Get channel number. */ 3231 chan = ieee80211_chan2ieee(ic, c); 3232 3233 /* Default TX power is group maximum TX power minus 3dB. */ 3234 pwr = group->maxpwr / 2; 3235 3236 /* Decrease TX power for highest OFDM rates to reduce distortion. */ 3237 switch (ridx) { 3238 case WPI_RIDX_OFDM36: 3239 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3240 break; 3241 case WPI_RIDX_OFDM48: 3242 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3243 break; 3244 case WPI_RIDX_OFDM54: 3245 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3246 break; 3247 } 3248 3249 /* Never exceed the channel maximum allowed TX power. */ 3250 pwr = min(pwr, sc->maxpwr[chan]); 3251 3252 /* Retrieve TX power index into gain tables from samples. */ 3253 for (sample = group->samples; sample < &group->samples[3]; sample++) 3254 if (pwr > sample[1].power) 3255 break; 3256 /* Fixed-point linear interpolation using a 19-bit fractional part. */ 3257 idx = interpolate(pwr, sample[0].power, sample[0].index, 3258 sample[1].power, sample[1].index, 19); 3259 3260 /*- 3261 * Adjust power index based on current temperature: 3262 * - if cooler than factory-calibrated: decrease output power 3263 * - if warmer than factory-calibrated: increase output power 3264 */ 3265 idx -= (sc->temp - group->temp) * 11 / 100; 3266 3267 /* Decrease TX power for CCK rates (-5dB). */ 3268 if (ridx >= WPI_RIDX_CCK1) 3269 idx += 10; 3270 3271 /* Make sure idx stays in a valid range. */ 3272 if (idx < 0) 3273 return 0; 3274 if (idx > WPI_MAX_PWR_INDEX) 3275 return WPI_MAX_PWR_INDEX; 3276 return idx; 3277 3278 #undef interpolate 3279 #undef fdivround 3280 } 3281 3282 /* 3283 * Set STA mode power saving level (between 0 and 5). 3284 * Level 0 is CAM (Continuously Aware Mode), 5 is for maximum power saving. 3285 */ 3286 static int 3287 wpi_set_pslevel(struct wpi_softc *sc, uint8_t dtim, int level, int async) 3288 { 3289 struct wpi_pmgt_cmd cmd; 3290 const struct wpi_pmgt *pmgt; 3291 uint32_t max, skip_dtim; 3292 uint32_t reg; 3293 int i; 3294 3295 DPRINTF(sc, WPI_DEBUG_PWRSAVE, 3296 "%s: dtim=%d, level=%d, async=%d\n", 3297 __func__, dtim, level, async); 3298 3299 /* Select which PS parameters to use. */ 3300 if (dtim <= 10) 3301 pmgt = &wpi_pmgt[0][level]; 3302 else 3303 pmgt = &wpi_pmgt[1][level]; 3304 3305 memset(&cmd, 0, sizeof cmd); 3306 if (level != 0) /* not CAM */ 3307 cmd.flags |= htole16(WPI_PS_ALLOW_SLEEP); 3308 /* Retrieve PCIe Active State Power Management (ASPM). */ 3309 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 3310 if (!(reg & 0x1)) /* L0s Entry disabled. */ 3311 cmd.flags |= htole16(WPI_PS_PCI_PMGT); 3312 3313 cmd.rxtimeout = htole32(pmgt->rxtimeout * IEEE80211_DUR_TU); 3314 cmd.txtimeout = htole32(pmgt->txtimeout * IEEE80211_DUR_TU); 3315 3316 if (dtim == 0) { 3317 dtim = 1; 3318 skip_dtim = 0; 3319 } else 3320 skip_dtim = pmgt->skip_dtim; 3321 3322 if (skip_dtim != 0) { 3323 cmd.flags |= htole16(WPI_PS_SLEEP_OVER_DTIM); 3324 max = pmgt->intval[4]; 3325 if (max == (uint32_t)-1) 3326 max = dtim * (skip_dtim + 1); 3327 else if (max > dtim) 3328 max = (max / dtim) * dtim; 3329 } else 3330 max = dtim; 3331 3332 for (i = 0; i < 5; i++) 3333 cmd.intval[i] = htole32(MIN(max, pmgt->intval[i])); 3334 3335 return wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &cmd, sizeof cmd, async); 3336 } 3337 3338 static int 3339 wpi_send_btcoex(struct wpi_softc *sc) 3340 { 3341 struct wpi_bluetooth cmd; 3342 3343 memset(&cmd, 0, sizeof cmd); 3344 cmd.flags = WPI_BT_COEX_MODE_4WIRE; 3345 cmd.lead_time = WPI_BT_LEAD_TIME_DEF; 3346 cmd.max_kill = WPI_BT_MAX_KILL_DEF; 3347 DPRINTF(sc, WPI_DEBUG_RESET, "%s: configuring bluetooth coexistence\n", 3348 __func__); 3349 return wpi_cmd(sc, WPI_CMD_BT_COEX, &cmd, sizeof(cmd), 0); 3350 } 3351 3352 static int 3353 wpi_send_rxon(struct wpi_softc *sc, int assoc, int async) 3354 { 3355 int error; 3356 3357 if (assoc && (sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3358 struct wpi_assoc rxon_assoc; 3359 3360 rxon_assoc.flags = sc->rxon.flags; 3361 rxon_assoc.filter = sc->rxon.filter; 3362 rxon_assoc.ofdm_mask = sc->rxon.ofdm_mask; 3363 rxon_assoc.cck_mask = sc->rxon.cck_mask; 3364 rxon_assoc.reserved = 0; 3365 3366 error = wpi_cmd(sc, WPI_CMD_RXON_ASSOC, &rxon_assoc, 3367 sizeof (struct wpi_assoc), async); 3368 } else { 3369 error = wpi_cmd(sc, WPI_CMD_RXON, &sc->rxon, 3370 sizeof (struct wpi_rxon), async); 3371 } 3372 if (error != 0) { 3373 device_printf(sc->sc_dev, "RXON command failed, error %d\n", 3374 error); 3375 return error; 3376 } 3377 3378 /* Configuration has changed, set Tx power accordingly. */ 3379 if ((error = wpi_set_txpower(sc, async)) != 0) { 3380 device_printf(sc->sc_dev, 3381 "%s: could not set TX power, error %d\n", __func__, error); 3382 return error; 3383 } 3384 3385 if (!(sc->rxon.filter & htole32(WPI_FILTER_BSS))) { 3386 /* Add broadcast node. */ 3387 error = wpi_add_broadcast_node(sc, async); 3388 if (error != 0) { 3389 device_printf(sc->sc_dev, 3390 "could not add broadcast node, error %d\n", error); 3391 return error; 3392 } 3393 } 3394 3395 return 0; 3396 } 3397 3398 /** 3399 * Configure the card to listen to a particular channel, this transisions the 3400 * card in to being able to receive frames from remote devices. 3401 */ 3402 static int 3403 wpi_config(struct wpi_softc *sc) 3404 { 3405 struct ifnet *ifp = sc->sc_ifp; 3406 struct ieee80211com *ic = ifp->if_l2com; 3407 uint32_t flags; 3408 int error; 3409 3410 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3411 3412 /* Set power saving level to CAM during initialization. */ 3413 if ((error = wpi_set_pslevel(sc, 0, 0, 0)) != 0) { 3414 device_printf(sc->sc_dev, 3415 "%s: could not set power saving level\n", __func__); 3416 return error; 3417 } 3418 3419 /* Configure bluetooth coexistence. */ 3420 if ((error = wpi_send_btcoex(sc)) != 0) { 3421 device_printf(sc->sc_dev, 3422 "could not configure bluetooth coexistence\n"); 3423 return error; 3424 } 3425 3426 /* Configure adapter. */ 3427 memset(&sc->rxon, 0, sizeof (struct wpi_rxon)); 3428 IEEE80211_ADDR_COPY(sc->rxon.myaddr, IF_LLADDR(ifp)); 3429 3430 /* Set default channel. */ 3431 sc->rxon.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3432 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3433 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 3434 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3435 3436 sc->rxon.filter = WPI_FILTER_MULTICAST; 3437 switch (ic->ic_opmode) { 3438 case IEEE80211_M_STA: 3439 sc->rxon.mode = WPI_MODE_STA; 3440 break; 3441 case IEEE80211_M_IBSS: 3442 sc->rxon.mode = WPI_MODE_IBSS; 3443 sc->rxon.filter |= WPI_FILTER_BEACON; 3444 break; 3445 /* XXX workaround for passive channels selection */ 3446 case IEEE80211_M_AHDEMO: 3447 case IEEE80211_M_HOSTAP: 3448 sc->rxon.mode = WPI_MODE_HOSTAP; 3449 break; 3450 case IEEE80211_M_MONITOR: 3451 sc->rxon.mode = WPI_MODE_MONITOR; 3452 break; 3453 default: 3454 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 3455 return EINVAL; 3456 } 3457 sc->rxon.filter = htole32(sc->rxon.filter); 3458 wpi_set_promisc(sc); 3459 sc->rxon.cck_mask = 0x0f; /* not yet negotiated */ 3460 sc->rxon.ofdm_mask = 0xff; /* not yet negotiated */ 3461 3462 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) { 3463 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3464 __func__); 3465 return error; 3466 } 3467 3468 /* Setup rate scalling. */ 3469 if ((error = wpi_mrr_setup(sc)) != 0) { 3470 device_printf(sc->sc_dev, "could not setup MRR, error %d\n", 3471 error); 3472 return error; 3473 } 3474 3475 /* Disable beacon notifications (unused). */ 3476 flags = WPI_STATISTICS_BEACON_DISABLE; 3477 error = wpi_cmd(sc, WPI_CMD_GET_STATISTICS, &flags, sizeof flags, 1); 3478 if (error != 0) { 3479 device_printf(sc->sc_dev, 3480 "could not disable beacon statistics, error %d\n", error); 3481 return error; 3482 } 3483 3484 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3485 3486 return 0; 3487 } 3488 3489 static uint16_t 3490 wpi_get_active_dwell_time(struct wpi_softc *sc, 3491 struct ieee80211_channel *c, uint8_t n_probes) 3492 { 3493 /* No channel? Default to 2GHz settings. */ 3494 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) { 3495 return (WPI_ACTIVE_DWELL_TIME_2GHZ + 3496 WPI_ACTIVE_DWELL_FACTOR_2GHZ * (n_probes + 1)); 3497 } 3498 3499 /* 5GHz dwell time. */ 3500 return (WPI_ACTIVE_DWELL_TIME_5GHZ + 3501 WPI_ACTIVE_DWELL_FACTOR_5GHZ * (n_probes + 1)); 3502 } 3503 3504 /* 3505 * Limit the total dwell time to 85% of the beacon interval. 3506 * 3507 * Returns the dwell time in milliseconds. 3508 */ 3509 static uint16_t 3510 wpi_limit_dwell(struct wpi_softc *sc, uint16_t dwell_time) 3511 { 3512 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3513 struct ieee80211vap *vap = NULL; 3514 int bintval = 0; 3515 3516 /* bintval is in TU (1.024mS) */ 3517 if (! TAILQ_EMPTY(&ic->ic_vaps)) { 3518 vap = TAILQ_FIRST(&ic->ic_vaps); 3519 bintval = vap->iv_bss->ni_intval; 3520 } 3521 3522 /* 3523 * If it's non-zero, we should calculate the minimum of 3524 * it and the DWELL_BASE. 3525 * 3526 * XXX Yes, the math should take into account that bintval 3527 * is 1.024mS, not 1mS.. 3528 */ 3529 if (bintval > 0) { 3530 DPRINTF(sc, WPI_DEBUG_SCAN, "%s: bintval=%d\n", __func__, 3531 bintval); 3532 return (MIN(WPI_PASSIVE_DWELL_BASE, ((bintval * 85) / 100))); 3533 } 3534 3535 /* No association context? Default. */ 3536 return (WPI_PASSIVE_DWELL_BASE); 3537 } 3538 3539 static uint16_t 3540 wpi_get_passive_dwell_time(struct wpi_softc *sc, struct ieee80211_channel *c) 3541 { 3542 uint16_t passive; 3543 3544 if (c == NULL || IEEE80211_IS_CHAN_2GHZ(c)) 3545 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_2GHZ; 3546 else 3547 passive = WPI_PASSIVE_DWELL_BASE + WPI_PASSIVE_DWELL_TIME_5GHZ; 3548 3549 /* Clamp to the beacon interval if we're associated. */ 3550 return (wpi_limit_dwell(sc, passive)); 3551 } 3552 3553 /* 3554 * Send a scan request to the firmware. 3555 */ 3556 static int 3557 wpi_scan(struct wpi_softc *sc, struct ieee80211_channel *c) 3558 { 3559 struct ifnet *ifp = sc->sc_ifp; 3560 struct ieee80211com *ic = ifp->if_l2com; 3561 struct ieee80211_scan_state *ss = ic->ic_scan; 3562 struct wpi_scan_hdr *hdr; 3563 struct wpi_cmd_data *tx; 3564 struct wpi_scan_essid *essids; 3565 struct wpi_scan_chan *chan; 3566 struct ieee80211_frame *wh; 3567 struct ieee80211_rateset *rs; 3568 uint16_t dwell_active, dwell_passive; 3569 uint8_t *buf, *frm; 3570 int buflen, error, i, nssid; 3571 3572 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3573 3574 /* 3575 * We are absolutely not allowed to send a scan command when another 3576 * scan command is pending. 3577 */ 3578 if (sc->sc_scan_timer) { 3579 device_printf(sc->sc_dev, "%s: called whilst scanning!\n", 3580 __func__); 3581 return (EAGAIN); 3582 } 3583 3584 buf = malloc(WPI_SCAN_MAXSZ, M_DEVBUF, M_NOWAIT | M_ZERO); 3585 if (buf == NULL) { 3586 device_printf(sc->sc_dev, 3587 "%s: could not allocate buffer for scan command\n", 3588 __func__); 3589 return ENOMEM; 3590 } 3591 hdr = (struct wpi_scan_hdr *)buf; 3592 3593 /* 3594 * Move to the next channel if no packets are received within 10 msecs 3595 * after sending the probe request. 3596 */ 3597 hdr->quiet_time = htole16(10); /* timeout in milliseconds */ 3598 hdr->quiet_threshold = htole16(1); /* min # of packets */ 3599 /* 3600 * Max needs to be greater than active and passive and quiet! 3601 * It's also in microseconds! 3602 */ 3603 hdr->max_svc = htole32(250 * IEEE80211_DUR_TU); 3604 hdr->pause_svc = htole32((4 << 24) | 3605 (100 * IEEE80211_DUR_TU)); /* Hardcode for now */ 3606 hdr->filter = htole32(WPI_FILTER_MULTICAST | WPI_FILTER_BEACON); 3607 3608 tx = (struct wpi_cmd_data *)(hdr + 1); 3609 tx->flags = htole32(WPI_TX_AUTO_SEQ); 3610 tx->id = WPI_ID_BROADCAST; 3611 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 3612 3613 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3614 /* Send probe requests at 6Mbps. */ 3615 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_OFDM6]; 3616 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 3617 } else { 3618 hdr->flags = htole32(WPI_RXON_24GHZ | WPI_RXON_AUTO); 3619 /* Send probe requests at 1Mbps. */ 3620 tx->plcp = wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3621 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 3622 } 3623 3624 essids = (struct wpi_scan_essid *)(tx + 1); 3625 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 3626 for (i = 0; i < nssid; i++) { 3627 essids[i].id = IEEE80211_ELEMID_SSID; 3628 essids[i].len = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 3629 memcpy(essids[i].data, ss->ss_ssid[i].ssid, essids[i].len); 3630 #ifdef WPI_DEBUG 3631 if (sc->sc_debug & WPI_DEBUG_SCAN) { 3632 printf("Scanning Essid: "); 3633 ieee80211_print_essid(essids[i].data, essids[i].len); 3634 printf("\n"); 3635 } 3636 #endif 3637 } 3638 3639 /* 3640 * Build a probe request frame. Most of the following code is a 3641 * copy & paste of what is done in net80211. 3642 */ 3643 wh = (struct ieee80211_frame *)(essids + WPI_SCAN_MAX_ESSIDS); 3644 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 3645 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 3646 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 3647 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 3648 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 3649 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 3650 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 3651 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 3652 3653 frm = (uint8_t *)(wh + 1); 3654 frm = ieee80211_add_ssid(frm, NULL, 0); 3655 frm = ieee80211_add_rates(frm, rs); 3656 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 3657 frm = ieee80211_add_xrates(frm, rs); 3658 3659 /* Set length of probe request. */ 3660 tx->len = htole16(frm - (uint8_t *)wh); 3661 3662 /* 3663 * Construct information about the channel that we 3664 * want to scan. The firmware expects this to be directly 3665 * after the scan probe request 3666 */ 3667 chan = (struct wpi_scan_chan *)frm; 3668 chan->chan = htole16(ieee80211_chan2ieee(ic, c)); 3669 chan->flags = 0; 3670 if (nssid) { 3671 hdr->crc_threshold = WPI_SCAN_CRC_TH_DEFAULT; 3672 chan->flags |= WPI_CHAN_NPBREQS(nssid); 3673 } else 3674 hdr->crc_threshold = WPI_SCAN_CRC_TH_NEVER; 3675 3676 if (!IEEE80211_IS_CHAN_PASSIVE(c)) 3677 chan->flags |= WPI_CHAN_ACTIVE; 3678 3679 /* 3680 * Calculate the active/passive dwell times. 3681 */ 3682 3683 dwell_active = wpi_get_active_dwell_time(sc, c, nssid); 3684 dwell_passive = wpi_get_passive_dwell_time(sc, c); 3685 3686 /* Make sure they're valid. */ 3687 if (dwell_passive <= dwell_active) 3688 dwell_passive = dwell_active + 1; 3689 3690 chan->active = htole16(dwell_active); 3691 chan->passive = htole16(dwell_passive); 3692 3693 chan->dsp_gain = 0x6e; /* Default level */ 3694 3695 if (IEEE80211_IS_CHAN_5GHZ(c)) 3696 chan->rf_gain = 0x3b; 3697 else 3698 chan->rf_gain = 0x28; 3699 3700 DPRINTF(sc, WPI_DEBUG_SCAN, "Scanning %u Passive: %d\n", 3701 chan->chan, IEEE80211_IS_CHAN_PASSIVE(c)); 3702 3703 hdr->nchan++; 3704 chan++; 3705 3706 buflen = (uint8_t *)chan - buf; 3707 hdr->len = htole16(buflen); 3708 3709 DPRINTF(sc, WPI_DEBUG_CMD, "sending scan command nchan=%d\n", 3710 hdr->nchan); 3711 error = wpi_cmd(sc, WPI_CMD_SCAN, buf, buflen, 1); 3712 free(buf, M_DEVBUF); 3713 3714 sc->sc_scan_timer = 5; 3715 3716 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3717 3718 return error; 3719 } 3720 3721 static int 3722 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 3723 { 3724 struct ieee80211com *ic = vap->iv_ic; 3725 struct ieee80211_node *ni = vap->iv_bss; 3726 int error; 3727 3728 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3729 3730 /* Update adapter configuration. */ 3731 sc->rxon.associd = 0; 3732 sc->rxon.filter &= ~htole32(WPI_FILTER_BSS); 3733 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 3734 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 3735 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3736 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 3737 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3738 if (ic->ic_flags & IEEE80211_F_SHSLOT) 3739 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 3740 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 3741 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 3742 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 3743 sc->rxon.cck_mask = 0; 3744 sc->rxon.ofdm_mask = 0x15; 3745 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 3746 sc->rxon.cck_mask = 0x03; 3747 sc->rxon.ofdm_mask = 0; 3748 } else { 3749 /* Assume 802.11b/g. */ 3750 sc->rxon.cck_mask = 0x0f; 3751 sc->rxon.ofdm_mask = 0x15; 3752 } 3753 3754 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x cck %x ofdm %x\n", 3755 sc->rxon.chan, sc->rxon.flags, sc->rxon.cck_mask, 3756 sc->rxon.ofdm_mask); 3757 3758 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 3759 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3760 __func__); 3761 } 3762 3763 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3764 3765 return error; 3766 } 3767 3768 static int 3769 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 3770 { 3771 struct ifnet *ifp = sc->sc_ifp; 3772 struct ieee80211com *ic = ifp->if_l2com; 3773 struct ieee80211vap *vap = ni->ni_vap; 3774 struct wpi_vap *wvp = WPI_VAP(vap); 3775 struct wpi_buf *bcn = &wvp->wv_bcbuf; 3776 struct ieee80211_beacon_offsets bo; 3777 struct wpi_cmd_beacon *cmd; 3778 struct mbuf *m; 3779 int totlen; 3780 3781 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3782 3783 if (ni->ni_chan == IEEE80211_CHAN_ANYC) 3784 return EINVAL; 3785 3786 m = ieee80211_beacon_alloc(ni, &bo); 3787 if (m == NULL) { 3788 device_printf(sc->sc_dev, 3789 "%s: could not allocate beacon frame\n", __func__); 3790 return ENOMEM; 3791 } 3792 totlen = m->m_pkthdr.len; 3793 3794 if (bcn->data == NULL) { 3795 cmd = malloc(sizeof(struct wpi_cmd_beacon), M_DEVBUF, 3796 M_NOWAIT | M_ZERO); 3797 3798 if (cmd == NULL) { 3799 device_printf(sc->sc_dev, 3800 "could not allocate buffer for beacon command\n"); 3801 m_freem(m); 3802 return ENOMEM; 3803 } 3804 3805 cmd->id = WPI_ID_BROADCAST; 3806 cmd->ofdm_mask = 0xff; 3807 cmd->cck_mask = 0x0f; 3808 cmd->lifetime = htole32(WPI_LIFETIME_INFINITE); 3809 cmd->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 3810 3811 bcn->data = cmd; 3812 bcn->ni = NULL; 3813 bcn->code = WPI_CMD_SET_BEACON; 3814 bcn->ac = 4; 3815 bcn->size = sizeof(struct wpi_cmd_beacon); 3816 } else 3817 cmd = bcn->data; 3818 3819 cmd->len = htole16(totlen); 3820 cmd->plcp = (ic->ic_curmode == IEEE80211_MODE_11A) ? 3821 wpi_ridx_to_plcp[WPI_RIDX_OFDM6] : wpi_ridx_to_plcp[WPI_RIDX_CCK1]; 3822 3823 /* NB: m will be freed in wpi_cmd_done() */ 3824 bcn->m = m; 3825 3826 return wpi_cmd2(sc, bcn); 3827 } 3828 3829 static void 3830 wpi_update_beacon(struct ieee80211vap *vap, int item) 3831 { 3832 struct ieee80211_node *ni = vap->iv_bss; 3833 struct ifnet *ifp = vap->iv_ifp; 3834 struct wpi_softc *sc = ifp->if_softc; 3835 int error; 3836 3837 WPI_LOCK(sc); 3838 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 3839 device_printf(sc->sc_dev, 3840 "%s: could not update beacon frame, error %d", __func__, 3841 error); 3842 } 3843 WPI_UNLOCK(sc); 3844 } 3845 3846 static int 3847 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 3848 { 3849 struct ieee80211com *ic = vap->iv_ic; 3850 struct ieee80211_node *ni = vap->iv_bss; 3851 int error; 3852 3853 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 3854 3855 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 3856 /* Link LED blinks while monitoring. */ 3857 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3858 return 0; 3859 } 3860 3861 /* XXX kernel panic workaround */ 3862 if (ni->ni_chan == IEEE80211_CHAN_ANYC) { 3863 device_printf(sc->sc_dev, "%s: incomplete configuration\n", 3864 __func__); 3865 return EINVAL; 3866 } 3867 3868 if ((error = wpi_set_timing(sc, ni)) != 0) { 3869 device_printf(sc->sc_dev, 3870 "%s: could not set timing, error %d\n", __func__, error); 3871 return error; 3872 } 3873 3874 /* Update adapter configuration. */ 3875 IEEE80211_ADDR_COPY(sc->rxon.bssid, ni->ni_bssid); 3876 sc->rxon.associd = htole16(IEEE80211_NODE_AID(ni)); 3877 sc->rxon.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 3878 sc->rxon.flags = htole32(WPI_RXON_TSF | WPI_RXON_CTS_TO_SELF); 3879 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 3880 sc->rxon.flags |= htole32(WPI_RXON_AUTO | WPI_RXON_24GHZ); 3881 /* Short preamble and slot time are negotiated when associating. */ 3882 sc->rxon.flags &= ~htole32(WPI_RXON_SHPREAMBLE | WPI_RXON_SHSLOT); 3883 if (ic->ic_flags & IEEE80211_F_SHSLOT) 3884 sc->rxon.flags |= htole32(WPI_RXON_SHSLOT); 3885 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 3886 sc->rxon.flags |= htole32(WPI_RXON_SHPREAMBLE); 3887 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 3888 sc->rxon.cck_mask = 0; 3889 sc->rxon.ofdm_mask = 0x15; 3890 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 3891 sc->rxon.cck_mask = 0x03; 3892 sc->rxon.ofdm_mask = 0; 3893 } else { 3894 /* Assume 802.11b/g. */ 3895 sc->rxon.cck_mask = 0x0f; 3896 sc->rxon.ofdm_mask = 0x15; 3897 } 3898 sc->rxon.filter |= htole32(WPI_FILTER_BSS); 3899 3900 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 3901 3902 DPRINTF(sc, WPI_DEBUG_STATE, "rxon chan %d flags %x\n", 3903 sc->rxon.chan, sc->rxon.flags); 3904 3905 if ((error = wpi_send_rxon(sc, 0, 1)) != 0) { 3906 device_printf(sc->sc_dev, "%s: could not send RXON\n", 3907 __func__); 3908 return error; 3909 } 3910 3911 if (vap->iv_opmode == IEEE80211_M_IBSS) { 3912 if ((error = wpi_setup_beacon(sc, ni)) != 0) { 3913 device_printf(sc->sc_dev, 3914 "%s: could not setup beacon, error %d\n", __func__, 3915 error); 3916 return error; 3917 } 3918 } 3919 3920 if (vap->iv_opmode == IEEE80211_M_STA) { 3921 /* Add BSS node. */ 3922 ((struct wpi_node *)ni)->id = WPI_ID_BSS; 3923 if ((error = wpi_add_node(sc, ni)) != 0) { 3924 device_printf(sc->sc_dev, 3925 "%s: could not add BSS node, error %d\n", __func__, 3926 error); 3927 return error; 3928 } 3929 } 3930 3931 /* Link LED always on while associated. */ 3932 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3933 3934 /* Start periodic calibration timer. */ 3935 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3936 3937 /* Enable power-saving mode if requested by user. */ 3938 if (vap->iv_flags & IEEE80211_F_PMGTON) 3939 (void)wpi_set_pslevel(sc, 0, 3, 1); 3940 else 3941 (void)wpi_set_pslevel(sc, 0, 0, 1); 3942 3943 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 3944 3945 return 0; 3946 } 3947 3948 static int 3949 wpi_key_alloc(struct ieee80211vap *vap, struct ieee80211_key *k, 3950 ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix) 3951 { 3952 struct ifnet *ifp = vap->iv_ifp; 3953 struct wpi_softc *sc = ifp->if_softc; 3954 3955 if (!(&vap->iv_nw_keys[0] <= k && 3956 k < &vap->iv_nw_keys[IEEE80211_WEP_NKID])) { 3957 if (k->wk_flags & IEEE80211_KEY_GROUP) { 3958 /* should not happen */ 3959 DPRINTF(sc, WPI_DEBUG_KEY, "%s: bogus group key\n", 3960 __func__); 3961 return 0; 3962 } 3963 *keyix = 0; /* NB: use key index 0 for ucast key */ 3964 } else { 3965 *keyix = *rxkeyix = k - vap->iv_nw_keys; 3966 3967 if (k->wk_cipher->ic_cipher == IEEE80211_CIPHER_AES_CCM) 3968 k->wk_flags |= IEEE80211_KEY_SWCRYPT; 3969 } 3970 return 1; 3971 } 3972 3973 static int 3974 wpi_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k, 3975 const uint8_t mac[IEEE80211_ADDR_LEN]) 3976 { 3977 const struct ieee80211_cipher *cip = k->wk_cipher; 3978 struct ieee80211com *ic = vap->iv_ic; 3979 struct ieee80211_node *ni = vap->iv_bss; 3980 struct wpi_softc *sc = ic->ic_ifp->if_softc; 3981 struct wpi_node *wn = (void *)ni; 3982 struct wpi_node_info node; 3983 uint16_t kflags; 3984 int error; 3985 3986 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 3987 3988 switch (cip->ic_cipher) { 3989 case IEEE80211_CIPHER_AES_CCM: 3990 if (k->wk_flags & IEEE80211_KEY_GROUP) 3991 return 1; 3992 3993 kflags = WPI_KFLAG_CCMP; 3994 break; 3995 default: 3996 /* null_key_set() */ 3997 return 1; 3998 } 3999 4000 if (wn->id == WPI_ID_UNDEFINED) 4001 return 0; 4002 4003 kflags |= WPI_KFLAG_KID(k->wk_keyix); 4004 if (k->wk_flags & IEEE80211_KEY_GROUP) 4005 kflags |= WPI_KFLAG_MULTICAST; 4006 4007 memset(&node, 0, sizeof node); 4008 node.id = wn->id; 4009 node.control = WPI_NODE_UPDATE; 4010 node.flags = WPI_FLAG_KEY_SET; 4011 node.kflags = htole16(kflags); 4012 memcpy(node.key, k->wk_key, k->wk_keylen); 4013 4014 DPRINTF(sc, WPI_DEBUG_KEY, "set key id=%d for node %d\n", k->wk_keyix, 4015 node.id); 4016 4017 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4018 if (error != 0) { 4019 device_printf(sc->sc_dev, "can't update node info, error %d\n", 4020 error); 4021 return 0; 4022 } 4023 4024 return 1; 4025 } 4026 4027 static int 4028 wpi_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k) 4029 { 4030 const struct ieee80211_cipher *cip = k->wk_cipher; 4031 struct ieee80211com *ic = vap->iv_ic; 4032 struct ieee80211_node *ni = vap->iv_bss; 4033 struct wpi_softc *sc = ic->ic_ifp->if_softc; 4034 struct wpi_node *wn = (void *)ni; 4035 struct wpi_node_info node; 4036 4037 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4038 4039 switch (cip->ic_cipher) { 4040 case IEEE80211_CIPHER_AES_CCM: 4041 break; 4042 default: 4043 /* null_key_delete() */ 4044 return 1; 4045 } 4046 4047 if (vap->iv_state != IEEE80211_S_RUN || 4048 (k->wk_flags & IEEE80211_KEY_GROUP)) 4049 return 1; /* Nothing to do. */ 4050 4051 memset(&node, 0, sizeof node); 4052 node.id = wn->id; 4053 node.control = WPI_NODE_UPDATE; 4054 node.flags = WPI_FLAG_KEY_SET; 4055 4056 DPRINTF(sc, WPI_DEBUG_KEY, "delete keys for node %d\n", node.id); 4057 (void)wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 4058 4059 return 1; 4060 } 4061 4062 /* 4063 * This function is called after the runtime firmware notifies us of its 4064 * readiness (called in a process context). 4065 */ 4066 static int 4067 wpi_post_alive(struct wpi_softc *sc) 4068 { 4069 int ntries, error; 4070 4071 /* Check (again) that the radio is not disabled. */ 4072 if ((error = wpi_nic_lock(sc)) != 0) 4073 return error; 4074 4075 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4076 4077 /* NB: Runtime firmware must be up and running. */ 4078 if (!(wpi_prph_read(sc, WPI_APMG_RFKILL) & 1)) { 4079 device_printf(sc->sc_dev, 4080 "RF switch: radio disabled (%s)\n", __func__); 4081 wpi_nic_unlock(sc); 4082 return EPERM; /* :-) */ 4083 } 4084 wpi_nic_unlock(sc); 4085 4086 /* Wait for thermal sensor to calibrate. */ 4087 for (ntries = 0; ntries < 1000; ntries++) { 4088 if ((sc->temp = (int)WPI_READ(sc, WPI_UCODE_GP2)) != 0) 4089 break; 4090 DELAY(10); 4091 } 4092 4093 if (ntries == 1000) { 4094 device_printf(sc->sc_dev, 4095 "timeout waiting for thermal sensor calibration\n"); 4096 return ETIMEDOUT; 4097 } 4098 4099 DPRINTF(sc, WPI_DEBUG_TEMP, "temperature %d\n", sc->temp); 4100 return 0; 4101 } 4102 4103 /* 4104 * The firmware boot code is small and is intended to be copied directly into 4105 * the NIC internal memory (no DMA transfer). 4106 */ 4107 static int 4108 wpi_load_bootcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 4109 { 4110 int error, ntries; 4111 4112 DPRINTF(sc, WPI_DEBUG_HW, "Loading microcode size 0x%x\n", size); 4113 4114 size /= sizeof (uint32_t); 4115 4116 if ((error = wpi_nic_lock(sc)) != 0) 4117 return error; 4118 4119 /* Copy microcode image into NIC memory. */ 4120 wpi_prph_write_region_4(sc, WPI_BSM_SRAM_BASE, 4121 (const uint32_t *)ucode, size); 4122 4123 wpi_prph_write(sc, WPI_BSM_WR_MEM_SRC, 0); 4124 wpi_prph_write(sc, WPI_BSM_WR_MEM_DST, WPI_FW_TEXT_BASE); 4125 wpi_prph_write(sc, WPI_BSM_WR_DWCOUNT, size); 4126 4127 /* Start boot load now. */ 4128 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START); 4129 4130 /* Wait for transfer to complete. */ 4131 for (ntries = 0; ntries < 1000; ntries++) { 4132 uint32_t status = WPI_READ(sc, WPI_FH_TX_STATUS); 4133 DPRINTF(sc, WPI_DEBUG_HW, 4134 "firmware status=0x%x, val=0x%x, result=0x%x\n", status, 4135 WPI_FH_TX_STATUS_IDLE(6), 4136 status & WPI_FH_TX_STATUS_IDLE(6)); 4137 if (status & WPI_FH_TX_STATUS_IDLE(6)) { 4138 DPRINTF(sc, WPI_DEBUG_HW, 4139 "Status Match! - ntries = %d\n", ntries); 4140 break; 4141 } 4142 DELAY(10); 4143 } 4144 if (ntries == 1000) { 4145 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4146 __func__); 4147 wpi_nic_unlock(sc); 4148 return ETIMEDOUT; 4149 } 4150 4151 /* Enable boot after power up. */ 4152 wpi_prph_write(sc, WPI_BSM_WR_CTRL, WPI_BSM_WR_CTRL_START_EN); 4153 4154 wpi_nic_unlock(sc); 4155 return 0; 4156 } 4157 4158 static int 4159 wpi_load_firmware(struct wpi_softc *sc) 4160 { 4161 struct wpi_fw_info *fw = &sc->fw; 4162 struct wpi_dma_info *dma = &sc->fw_dma; 4163 int error; 4164 4165 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4166 4167 /* Copy initialization sections into pre-allocated DMA-safe memory. */ 4168 memcpy(dma->vaddr, fw->init.data, fw->init.datasz); 4169 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4170 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->init.text, fw->init.textsz); 4171 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4172 4173 /* Tell adapter where to find initialization sections. */ 4174 if ((error = wpi_nic_lock(sc)) != 0) 4175 return error; 4176 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4177 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->init.datasz); 4178 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4179 dma->paddr + WPI_FW_DATA_MAXSZ); 4180 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, fw->init.textsz); 4181 wpi_nic_unlock(sc); 4182 4183 /* Load firmware boot code. */ 4184 error = wpi_load_bootcode(sc, fw->boot.text, fw->boot.textsz); 4185 if (error != 0) { 4186 device_printf(sc->sc_dev, "%s: could not load boot firmware\n", 4187 __func__); 4188 return error; 4189 } 4190 4191 /* Now press "execute". */ 4192 WPI_WRITE(sc, WPI_RESET, 0); 4193 4194 /* Wait at most one second for first alive notification. */ 4195 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4196 device_printf(sc->sc_dev, 4197 "%s: timeout waiting for adapter to initialize, error %d\n", 4198 __func__, error); 4199 return error; 4200 } 4201 4202 /* Copy runtime sections into pre-allocated DMA-safe memory. */ 4203 memcpy(dma->vaddr, fw->main.data, fw->main.datasz); 4204 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4205 memcpy(dma->vaddr + WPI_FW_DATA_MAXSZ, fw->main.text, fw->main.textsz); 4206 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 4207 4208 /* Tell adapter where to find runtime sections. */ 4209 if ((error = wpi_nic_lock(sc)) != 0) 4210 return error; 4211 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_ADDR, dma->paddr); 4212 wpi_prph_write(sc, WPI_BSM_DRAM_DATA_SIZE, fw->main.datasz); 4213 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_ADDR, 4214 dma->paddr + WPI_FW_DATA_MAXSZ); 4215 wpi_prph_write(sc, WPI_BSM_DRAM_TEXT_SIZE, 4216 WPI_FW_UPDATED | fw->main.textsz); 4217 wpi_nic_unlock(sc); 4218 4219 return 0; 4220 } 4221 4222 static int 4223 wpi_read_firmware(struct wpi_softc *sc) 4224 { 4225 const struct firmware *fp; 4226 struct wpi_fw_info *fw = &sc->fw; 4227 const struct wpi_firmware_hdr *hdr; 4228 int error; 4229 4230 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4231 4232 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4233 "Attempting Loading Firmware from %s module\n", WPI_FW_NAME); 4234 4235 WPI_UNLOCK(sc); 4236 fp = firmware_get(WPI_FW_NAME); 4237 WPI_LOCK(sc); 4238 4239 if (fp == NULL) { 4240 device_printf(sc->sc_dev, 4241 "could not load firmware image '%s'\n", WPI_FW_NAME); 4242 return EINVAL; 4243 } 4244 4245 sc->fw_fp = fp; 4246 4247 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 4248 device_printf(sc->sc_dev, 4249 "firmware file too short: %zu bytes\n", fp->datasize); 4250 error = EINVAL; 4251 goto fail; 4252 } 4253 4254 fw->size = fp->datasize; 4255 fw->data = (const uint8_t *)fp->data; 4256 4257 /* Extract firmware header information. */ 4258 hdr = (const struct wpi_firmware_hdr *)fw->data; 4259 4260 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 4261 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 4262 4263 fw->main.textsz = le32toh(hdr->rtextsz); 4264 fw->main.datasz = le32toh(hdr->rdatasz); 4265 fw->init.textsz = le32toh(hdr->itextsz); 4266 fw->init.datasz = le32toh(hdr->idatasz); 4267 fw->boot.textsz = le32toh(hdr->btextsz); 4268 fw->boot.datasz = 0; 4269 4270 /* Sanity-check firmware header. */ 4271 if (fw->main.textsz > WPI_FW_TEXT_MAXSZ || 4272 fw->main.datasz > WPI_FW_DATA_MAXSZ || 4273 fw->init.textsz > WPI_FW_TEXT_MAXSZ || 4274 fw->init.datasz > WPI_FW_DATA_MAXSZ || 4275 fw->boot.textsz > WPI_FW_BOOT_TEXT_MAXSZ || 4276 (fw->boot.textsz & 3) != 0) { 4277 device_printf(sc->sc_dev, "invalid firmware header\n"); 4278 error = EINVAL; 4279 goto fail; 4280 } 4281 4282 /* Check that all firmware sections fit. */ 4283 if (fw->size < sizeof (*hdr) + fw->main.textsz + fw->main.datasz + 4284 fw->init.textsz + fw->init.datasz + fw->boot.textsz) { 4285 device_printf(sc->sc_dev, 4286 "firmware file too short: %zu bytes\n", fw->size); 4287 error = EINVAL; 4288 goto fail; 4289 } 4290 4291 /* Get pointers to firmware sections. */ 4292 fw->main.text = (const uint8_t *)(hdr + 1); 4293 fw->main.data = fw->main.text + fw->main.textsz; 4294 fw->init.text = fw->main.data + fw->main.datasz; 4295 fw->init.data = fw->init.text + fw->init.textsz; 4296 fw->boot.text = fw->init.data + fw->init.datasz; 4297 4298 DPRINTF(sc, WPI_DEBUG_FIRMWARE, 4299 "Firmware Version: Major %d, Minor %d, Driver %d, \n" 4300 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 4301 hdr->major, hdr->minor, le32toh(hdr->driver), 4302 fw->main.textsz, fw->main.datasz, 4303 fw->init.textsz, fw->init.datasz, fw->boot.textsz); 4304 4305 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.text %p\n", fw->main.text); 4306 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->main.data %p\n", fw->main.data); 4307 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.text %p\n", fw->init.text); 4308 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->init.data %p\n", fw->init.data); 4309 DPRINTF(sc, WPI_DEBUG_FIRMWARE, "fw->boot.text %p\n", fw->boot.text); 4310 4311 return 0; 4312 4313 fail: wpi_unload_firmware(sc); 4314 return error; 4315 } 4316 4317 /** 4318 * Free the referenced firmware image 4319 */ 4320 static void 4321 wpi_unload_firmware(struct wpi_softc *sc) 4322 { 4323 if (sc->fw_fp != NULL) { 4324 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 4325 sc->fw_fp = NULL; 4326 } 4327 } 4328 4329 static int 4330 wpi_clock_wait(struct wpi_softc *sc) 4331 { 4332 int ntries; 4333 4334 /* Set "initialization complete" bit. */ 4335 WPI_SETBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4336 4337 /* Wait for clock stabilization. */ 4338 for (ntries = 0; ntries < 2500; ntries++) { 4339 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_MAC_CLOCK_READY) 4340 return 0; 4341 DELAY(100); 4342 } 4343 device_printf(sc->sc_dev, 4344 "%s: timeout waiting for clock stabilization\n", __func__); 4345 4346 return ETIMEDOUT; 4347 } 4348 4349 static int 4350 wpi_apm_init(struct wpi_softc *sc) 4351 { 4352 uint32_t reg; 4353 int error; 4354 4355 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4356 4357 /* Disable L0s exit timer (NMI bug workaround). */ 4358 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_DIS_L0S_TIMER); 4359 /* Don't wait for ICH L0s (ICH bug workaround). */ 4360 WPI_SETBITS(sc, WPI_GIO_CHICKEN, WPI_GIO_CHICKEN_L1A_NO_L0S_RX); 4361 4362 /* Set FH wait threshold to max (HW bug under stress workaround). */ 4363 WPI_SETBITS(sc, WPI_DBG_HPET_MEM, 0xffff0000); 4364 4365 /* Retrieve PCIe Active State Power Management (ASPM). */ 4366 reg = pci_read_config(sc->sc_dev, sc->sc_cap_off + 0x10, 1); 4367 /* Workaround for HW instability in PCIe L0->L0s->L1 transition. */ 4368 if (reg & 0x02) /* L1 Entry enabled. */ 4369 WPI_SETBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4370 else 4371 WPI_CLRBITS(sc, WPI_GIO, WPI_GIO_L0S_ENA); 4372 4373 WPI_SETBITS(sc, WPI_ANA_PLL, WPI_ANA_PLL_INIT); 4374 4375 /* Wait for clock stabilization before accessing prph. */ 4376 if ((error = wpi_clock_wait(sc)) != 0) 4377 return error; 4378 4379 if ((error = wpi_nic_lock(sc)) != 0) 4380 return error; 4381 /* Enable DMA and BSM (Bootstrap State Machine). */ 4382 wpi_prph_write(sc, WPI_APMG_CLK_EN, 4383 WPI_APMG_CLK_CTRL_DMA_CLK_RQT | WPI_APMG_CLK_CTRL_BSM_CLK_RQT); 4384 DELAY(20); 4385 /* Disable L1-Active. */ 4386 wpi_prph_setbits(sc, WPI_APMG_PCI_STT, WPI_APMG_PCI_STT_L1A_DIS); 4387 /* ??? */ 4388 wpi_prph_clrbits(sc, WPI_APMG_PS, 0x00000E00); 4389 wpi_nic_unlock(sc); 4390 4391 return 0; 4392 } 4393 4394 static void 4395 wpi_apm_stop_master(struct wpi_softc *sc) 4396 { 4397 int ntries; 4398 4399 /* Stop busmaster DMA activity. */ 4400 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_STOP_MASTER); 4401 4402 if ((WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_PS_MASK) == 4403 WPI_GP_CNTRL_MAC_PS) 4404 return; /* Already asleep. */ 4405 4406 for (ntries = 0; ntries < 100; ntries++) { 4407 if (WPI_READ(sc, WPI_RESET) & WPI_RESET_MASTER_DISABLED) 4408 return; 4409 DELAY(10); 4410 } 4411 device_printf(sc->sc_dev, "%s: timeout waiting for master\n", __func__); 4412 } 4413 4414 static void 4415 wpi_apm_stop(struct wpi_softc *sc) 4416 { 4417 wpi_apm_stop_master(sc); 4418 4419 /* Reset the entire device. */ 4420 WPI_SETBITS(sc, WPI_RESET, WPI_RESET_SW); 4421 DELAY(10); 4422 /* Clear "initialization complete" bit. */ 4423 WPI_CLRBITS(sc, WPI_GP_CNTRL, WPI_GP_CNTRL_INIT_DONE); 4424 } 4425 4426 static void 4427 wpi_nic_config(struct wpi_softc *sc) 4428 { 4429 uint32_t rev; 4430 4431 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4432 4433 /* voodoo from the Linux "driver".. */ 4434 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 4435 if ((rev & 0xc0) == 0x40) 4436 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MB); 4437 else if (!(rev & 0x80)) 4438 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_ALM_MM); 4439 4440 if (sc->cap == 0x80) 4441 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_SKU_MRC); 4442 4443 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 4444 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4445 else 4446 WPI_CLRBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_REV_D); 4447 4448 if (sc->type > 1) 4449 WPI_SETBITS(sc, WPI_HW_IF_CONFIG, WPI_HW_IF_CONFIG_TYPE_B); 4450 } 4451 4452 static int 4453 wpi_hw_init(struct wpi_softc *sc) 4454 { 4455 int chnl, ntries, error; 4456 4457 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4458 4459 /* Clear pending interrupts. */ 4460 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4461 4462 if ((error = wpi_apm_init(sc)) != 0) { 4463 device_printf(sc->sc_dev, 4464 "%s: could not power ON adapter, error %d\n", __func__, 4465 error); 4466 return error; 4467 } 4468 4469 /* Select VMAIN power source. */ 4470 if ((error = wpi_nic_lock(sc)) != 0) 4471 return error; 4472 wpi_prph_clrbits(sc, WPI_APMG_PS, WPI_APMG_PS_PWR_SRC_MASK); 4473 wpi_nic_unlock(sc); 4474 /* Spin until VMAIN gets selected. */ 4475 for (ntries = 0; ntries < 5000; ntries++) { 4476 if (WPI_READ(sc, WPI_GPIO_IN) & WPI_GPIO_IN_VMAIN) 4477 break; 4478 DELAY(10); 4479 } 4480 if (ntries == 5000) { 4481 device_printf(sc->sc_dev, "timeout selecting power source\n"); 4482 return ETIMEDOUT; 4483 } 4484 4485 /* Perform adapter initialization. */ 4486 wpi_nic_config(sc); 4487 4488 /* Initialize RX ring. */ 4489 if ((error = wpi_nic_lock(sc)) != 0) 4490 return error; 4491 /* Set physical address of RX ring. */ 4492 WPI_WRITE(sc, WPI_FH_RX_BASE, sc->rxq.desc_dma.paddr); 4493 /* Set physical address of RX read pointer. */ 4494 WPI_WRITE(sc, WPI_FH_RX_RPTR_ADDR, sc->shared_dma.paddr + 4495 offsetof(struct wpi_shared, next)); 4496 WPI_WRITE(sc, WPI_FH_RX_WPTR, 0); 4497 /* Enable RX. */ 4498 WPI_WRITE(sc, WPI_FH_RX_CONFIG, 4499 WPI_FH_RX_CONFIG_DMA_ENA | 4500 WPI_FH_RX_CONFIG_RDRBD_ENA | 4501 WPI_FH_RX_CONFIG_WRSTATUS_ENA | 4502 WPI_FH_RX_CONFIG_MAXFRAG | 4503 WPI_FH_RX_CONFIG_NRBD(WPI_RX_RING_COUNT_LOG) | 4504 WPI_FH_RX_CONFIG_IRQ_DST_HOST | 4505 WPI_FH_RX_CONFIG_IRQ_TIMEOUT(1)); 4506 (void)WPI_READ(sc, WPI_FH_RSSR_TBL); /* barrier */ 4507 wpi_nic_unlock(sc); 4508 WPI_WRITE(sc, WPI_FH_RX_WPTR, (WPI_RX_RING_COUNT - 1) & ~7); 4509 4510 /* Initialize TX rings. */ 4511 if ((error = wpi_nic_lock(sc)) != 0) 4512 return error; 4513 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 2); /* bypass mode */ 4514 wpi_prph_write(sc, WPI_ALM_SCHED_ARASTAT, 1); /* enable RA0 */ 4515 /* Enable all 6 TX rings. */ 4516 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0x3f); 4517 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE1, 0x10000); 4518 wpi_prph_write(sc, WPI_ALM_SCHED_SBYPASS_MODE2, 0x30002); 4519 wpi_prph_write(sc, WPI_ALM_SCHED_TXF4MF, 4); 4520 wpi_prph_write(sc, WPI_ALM_SCHED_TXF5MF, 5); 4521 /* Set physical address of TX rings. */ 4522 WPI_WRITE(sc, WPI_FH_TX_BASE, sc->shared_dma.paddr); 4523 WPI_WRITE(sc, WPI_FH_MSG_CONFIG, 0xffff05a5); 4524 4525 /* Enable all DMA channels. */ 4526 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 4527 WPI_WRITE(sc, WPI_FH_CBBC_CTRL(chnl), 0); 4528 WPI_WRITE(sc, WPI_FH_CBBC_BASE(chnl), 0); 4529 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0x80200008); 4530 } 4531 wpi_nic_unlock(sc); 4532 (void)WPI_READ(sc, WPI_FH_TX_BASE); /* barrier */ 4533 4534 /* Clear "radio off" and "commands blocked" bits. */ 4535 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4536 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_CMD_BLOCKED); 4537 4538 /* Clear pending interrupts. */ 4539 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4540 /* Enable interrupts. */ 4541 WPI_WRITE(sc, WPI_INT_MASK, WPI_INT_MASK_DEF); 4542 4543 /* _Really_ make sure "radio off" bit is cleared! */ 4544 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4545 WPI_WRITE(sc, WPI_UCODE_GP1_CLR, WPI_UCODE_GP1_RFKILL); 4546 4547 if ((error = wpi_load_firmware(sc)) != 0) { 4548 device_printf(sc->sc_dev, 4549 "%s: could not load firmware, error %d\n", __func__, 4550 error); 4551 return error; 4552 } 4553 /* Wait at most one second for firmware alive notification. */ 4554 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 4555 device_printf(sc->sc_dev, 4556 "%s: timeout waiting for adapter to initialize, error %d\n", 4557 __func__, error); 4558 return error; 4559 } 4560 4561 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4562 4563 /* Do post-firmware initialization. */ 4564 return wpi_post_alive(sc); 4565 } 4566 4567 static void 4568 wpi_hw_stop(struct wpi_softc *sc) 4569 { 4570 int chnl, qid, ntries; 4571 4572 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4573 4574 if (WPI_READ(sc, WPI_UCODE_GP1) & WPI_UCODE_GP1_MAC_SLEEP) 4575 wpi_nic_lock(sc); 4576 4577 WPI_WRITE(sc, WPI_RESET, WPI_RESET_NEVO); 4578 4579 /* Disable interrupts. */ 4580 WPI_WRITE(sc, WPI_INT_MASK, 0); 4581 WPI_WRITE(sc, WPI_INT, 0xffffffff); 4582 WPI_WRITE(sc, WPI_FH_INT, 0xffffffff); 4583 4584 /* Make sure we no longer hold the NIC lock. */ 4585 wpi_nic_unlock(sc); 4586 4587 if (wpi_nic_lock(sc) == 0) { 4588 /* Stop TX scheduler. */ 4589 wpi_prph_write(sc, WPI_ALM_SCHED_MODE, 0); 4590 wpi_prph_write(sc, WPI_ALM_SCHED_TXFACT, 0); 4591 4592 /* Stop all DMA channels. */ 4593 for (chnl = 0; chnl < WPI_NDMACHNLS; chnl++) { 4594 WPI_WRITE(sc, WPI_FH_TX_CONFIG(chnl), 0); 4595 for (ntries = 0; ntries < 200; ntries++) { 4596 if (WPI_READ(sc, WPI_FH_TX_STATUS) & 4597 WPI_FH_TX_STATUS_IDLE(chnl)) 4598 break; 4599 DELAY(10); 4600 } 4601 } 4602 wpi_nic_unlock(sc); 4603 } 4604 4605 /* Stop RX ring. */ 4606 wpi_reset_rx_ring(sc); 4607 4608 /* Reset all TX rings. */ 4609 for (qid = 0; qid < WPI_NTXQUEUES; qid++) 4610 wpi_reset_tx_ring(sc, &sc->txq[qid]); 4611 4612 if (wpi_nic_lock(sc) == 0) { 4613 wpi_prph_write(sc, WPI_APMG_CLK_DIS, 4614 WPI_APMG_CLK_CTRL_DMA_CLK_RQT); 4615 wpi_nic_unlock(sc); 4616 } 4617 DELAY(5); 4618 /* Power OFF adapter. */ 4619 wpi_apm_stop(sc); 4620 } 4621 4622 static void 4623 wpi_radio_on(void *arg0, int pending) 4624 { 4625 struct wpi_softc *sc = arg0; 4626 struct ifnet *ifp = sc->sc_ifp; 4627 struct ieee80211com *ic = ifp->if_l2com; 4628 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4629 4630 device_printf(sc->sc_dev, "RF switch: radio enabled\n"); 4631 4632 if (vap != NULL) { 4633 wpi_init(sc); 4634 ieee80211_init(vap); 4635 } 4636 4637 if (WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL) { 4638 WPI_LOCK(sc); 4639 callout_stop(&sc->watchdog_rfkill); 4640 WPI_UNLOCK(sc); 4641 } 4642 } 4643 4644 static void 4645 wpi_radio_off(void *arg0, int pending) 4646 { 4647 struct wpi_softc *sc = arg0; 4648 struct ifnet *ifp = sc->sc_ifp; 4649 struct ieee80211com *ic = ifp->if_l2com; 4650 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4651 4652 device_printf(sc->sc_dev, "RF switch: radio disabled\n"); 4653 4654 wpi_stop(sc); 4655 if (vap != NULL) 4656 ieee80211_stop(vap); 4657 4658 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, sc); 4659 } 4660 4661 static void 4662 wpi_init_locked(struct wpi_softc *sc) 4663 { 4664 struct ifnet *ifp = sc->sc_ifp; 4665 int error; 4666 4667 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_BEGIN, __func__); 4668 4669 WPI_LOCK_ASSERT(sc); 4670 4671 /* Check that the radio is not disabled by hardware switch. */ 4672 if (!(WPI_READ(sc, WPI_GP_CNTRL) & WPI_GP_CNTRL_RFKILL)) { 4673 device_printf(sc->sc_dev, 4674 "RF switch: radio disabled (%s)\n", __func__); 4675 callout_reset(&sc->watchdog_rfkill, hz, wpi_watchdog_rfkill, 4676 sc); 4677 return; 4678 } 4679 4680 /* Read firmware images from the filesystem. */ 4681 if ((error = wpi_read_firmware(sc)) != 0) { 4682 device_printf(sc->sc_dev, 4683 "%s: could not read firmware, error %d\n", __func__, 4684 error); 4685 goto fail; 4686 } 4687 4688 /* Initialize hardware and upload firmware. */ 4689 error = wpi_hw_init(sc); 4690 wpi_unload_firmware(sc); 4691 if (error != 0) { 4692 device_printf(sc->sc_dev, 4693 "%s: could not initialize hardware, error %d\n", __func__, 4694 error); 4695 goto fail; 4696 } 4697 4698 /* Configure adapter now that it is ready. */ 4699 if ((error = wpi_config(sc)) != 0) { 4700 device_printf(sc->sc_dev, 4701 "%s: could not configure device, error %d\n", __func__, 4702 error); 4703 goto fail; 4704 } 4705 4706 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 4707 ifp->if_drv_flags |= IFF_DRV_RUNNING; 4708 4709 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 4710 4711 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END, __func__); 4712 4713 return; 4714 4715 fail: wpi_stop_locked(sc); 4716 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_END_ERR, __func__); 4717 } 4718 4719 static void 4720 wpi_init(void *arg) 4721 { 4722 struct wpi_softc *sc = arg; 4723 struct ifnet *ifp = sc->sc_ifp; 4724 struct ieee80211com *ic = ifp->if_l2com; 4725 4726 WPI_LOCK(sc); 4727 wpi_init_locked(sc); 4728 WPI_UNLOCK(sc); 4729 4730 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 4731 ieee80211_start_all(ic); 4732 } 4733 4734 static void 4735 wpi_stop_locked(struct wpi_softc *sc) 4736 { 4737 struct ifnet *ifp = sc->sc_ifp; 4738 4739 WPI_LOCK_ASSERT(sc); 4740 4741 sc->sc_scan_timer = 0; 4742 sc->sc_tx_timer = 0; 4743 callout_stop(&sc->watchdog_to); 4744 callout_stop(&sc->calib_to); 4745 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 4746 4747 /* Power OFF hardware. */ 4748 wpi_hw_stop(sc); 4749 } 4750 4751 static void 4752 wpi_stop(struct wpi_softc *sc) 4753 { 4754 WPI_LOCK(sc); 4755 wpi_stop_locked(sc); 4756 WPI_UNLOCK(sc); 4757 } 4758 4759 /* 4760 * Callback from net80211 to start a scan. 4761 */ 4762 static void 4763 wpi_scan_start(struct ieee80211com *ic) 4764 { 4765 struct ifnet *ifp = ic->ic_ifp; 4766 struct wpi_softc *sc = ifp->if_softc; 4767 4768 WPI_LOCK(sc); 4769 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 4770 WPI_UNLOCK(sc); 4771 } 4772 4773 /* 4774 * Callback from net80211 to terminate a scan. 4775 */ 4776 static void 4777 wpi_scan_end(struct ieee80211com *ic) 4778 { 4779 struct ifnet *ifp = ic->ic_ifp; 4780 struct wpi_softc *sc = ifp->if_softc; 4781 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4782 4783 if (vap->iv_state == IEEE80211_S_RUN) { 4784 WPI_LOCK(sc); 4785 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 4786 WPI_UNLOCK(sc); 4787 } 4788 } 4789 4790 /** 4791 * Called by the net80211 framework to indicate to the driver 4792 * that the channel should be changed 4793 */ 4794 static void 4795 wpi_set_channel(struct ieee80211com *ic) 4796 { 4797 const struct ieee80211_channel *c = ic->ic_curchan; 4798 struct ifnet *ifp = ic->ic_ifp; 4799 struct wpi_softc *sc = ifp->if_softc; 4800 int error; 4801 4802 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4803 4804 WPI_LOCK(sc); 4805 sc->sc_rxtap.wr_chan_freq = htole16(c->ic_freq); 4806 sc->sc_rxtap.wr_chan_flags = htole16(c->ic_flags); 4807 sc->sc_txtap.wt_chan_freq = htole16(c->ic_freq); 4808 sc->sc_txtap.wt_chan_flags = htole16(c->ic_flags); 4809 4810 /* 4811 * Only need to set the channel in Monitor mode. AP scanning and auth 4812 * are already taken care of by their respective firmware commands. 4813 */ 4814 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 4815 sc->rxon.chan = ieee80211_chan2ieee(ic, c); 4816 if (IEEE80211_IS_CHAN_2GHZ(c)) { 4817 sc->rxon.flags |= htole32(WPI_RXON_AUTO | 4818 WPI_RXON_24GHZ); 4819 } else { 4820 sc->rxon.flags &= ~htole32(WPI_RXON_AUTO | 4821 WPI_RXON_24GHZ); 4822 } 4823 if ((error = wpi_send_rxon(sc, 0, 0)) != 0) 4824 device_printf(sc->sc_dev, 4825 "%s: error %d settting channel\n", __func__, 4826 error); 4827 } 4828 WPI_UNLOCK(sc); 4829 } 4830 4831 /** 4832 * Called by net80211 to indicate that we need to scan the current 4833 * channel. The channel is previously be set via the wpi_set_channel 4834 * callback. 4835 */ 4836 static void 4837 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 4838 { 4839 struct ieee80211vap *vap = ss->ss_vap; 4840 struct ieee80211com *ic = vap->iv_ic; 4841 struct ifnet *ifp = ic->ic_ifp; 4842 struct wpi_softc *sc = ifp->if_softc; 4843 int error; 4844 4845 if (sc->rxon.chan != ieee80211_chan2ieee(ic, ic->ic_curchan)) { 4846 WPI_LOCK(sc); 4847 error = wpi_scan(sc, ic->ic_curchan); 4848 WPI_UNLOCK(sc); 4849 if (error != 0) 4850 ieee80211_cancel_scan(vap); 4851 } else { 4852 /* Send probe request when associated. */ 4853 sc->sc_scan_curchan(ss, maxdwell); 4854 } 4855 } 4856 4857 /** 4858 * Called by the net80211 framework to indicate 4859 * the minimum dwell time has been met, terminate the scan. 4860 * We don't actually terminate the scan as the firmware will notify 4861 * us when it's finished and we have no way to interrupt it. 4862 */ 4863 static void 4864 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 4865 { 4866 /* NB: don't try to abort scan; wait for firmware to finish */ 4867 } 4868 4869 static void 4870 wpi_hw_reset(void *arg, int pending) 4871 { 4872 struct wpi_softc *sc = arg; 4873 struct ifnet *ifp = sc->sc_ifp; 4874 struct ieee80211com *ic = ifp->if_l2com; 4875 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 4876 4877 DPRINTF(sc, WPI_DEBUG_TRACE, TRACE_STR_DOING, __func__); 4878 4879 wpi_stop(sc); 4880 if (vap != NULL) 4881 ieee80211_stop(vap); 4882 wpi_init(sc); 4883 if (vap != NULL) 4884 ieee80211_init(vap); 4885 } 4886