if_wpi.c revision 1.80.2.2
1 /* $NetBSD: if_wpi.c,v 1.80.2.2 2020/04/08 14:08:09 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007 5 * Damien Bergamini <damien.bergamini (at) free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __KERNEL_RCSID(0, "$NetBSD: if_wpi.c,v 1.80.2.2 2020/04/08 14:08:09 martin Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 28 #include <sys/param.h> 29 #include <sys/sockio.h> 30 #include <sys/sysctl.h> 31 #include <sys/mbuf.h> 32 #include <sys/kernel.h> 33 #include <sys/socket.h> 34 #include <sys/systm.h> 35 #include <sys/malloc.h> 36 #include <sys/mutex.h> 37 #include <sys/once.h> 38 #include <sys/conf.h> 39 #include <sys/kauth.h> 40 #include <sys/callout.h> 41 #include <sys/proc.h> 42 #include <sys/kthread.h> 43 44 #include <sys/bus.h> 45 #include <machine/endian.h> 46 #include <sys/intr.h> 47 48 #include <dev/pci/pcireg.h> 49 #include <dev/pci/pcivar.h> 50 #include <dev/pci/pcidevs.h> 51 52 #include <dev/sysmon/sysmonvar.h> 53 54 #include <net/bpf.h> 55 #include <net/if.h> 56 #include <net/if_arp.h> 57 #include <net/if_dl.h> 58 #include <net/if_ether.h> 59 #include <net/if_media.h> 60 #include <net/if_types.h> 61 62 #include <netinet/in.h> 63 #include <netinet/in_systm.h> 64 #include <netinet/in_var.h> 65 #include <netinet/ip.h> 66 67 #include <net80211/ieee80211_var.h> 68 #include <net80211/ieee80211_amrr.h> 69 #include <net80211/ieee80211_radiotap.h> 70 71 #include <dev/firmload.h> 72 73 #include <dev/pci/if_wpireg.h> 74 #include <dev/pci/if_wpivar.h> 75 76 static const char wpi_firmware_name[] = "iwlwifi-3945.ucode"; 77 static once_t wpi_firmware_init; 78 static kmutex_t wpi_firmware_mutex; 79 static size_t wpi_firmware_users; 80 static uint8_t *wpi_firmware_image; 81 static size_t wpi_firmware_size; 82 83 static int wpi_match(device_t, cfdata_t, void *); 84 static void wpi_attach(device_t, device_t, void *); 85 static int wpi_detach(device_t , int); 86 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 87 void **, bus_size_t, bus_size_t, int); 88 static void wpi_dma_contig_free(struct wpi_dma_info *); 89 static int wpi_alloc_shared(struct wpi_softc *); 90 static void wpi_free_shared(struct wpi_softc *); 91 static int wpi_alloc_fwmem(struct wpi_softc *); 92 static void wpi_free_fwmem(struct wpi_softc *); 93 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 94 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 95 static int wpi_alloc_rpool(struct wpi_softc *); 96 static void wpi_free_rpool(struct wpi_softc *); 97 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 98 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 99 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 100 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 101 int, int); 102 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 103 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 104 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 105 static void wpi_newassoc(struct ieee80211_node *, int); 106 static int wpi_media_change(struct ifnet *); 107 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 108 static void wpi_mem_lock(struct wpi_softc *); 109 static void wpi_mem_unlock(struct wpi_softc *); 110 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 111 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 112 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 113 const uint32_t *, int); 114 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 115 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 116 static int wpi_cache_firmware(struct wpi_softc *); 117 static void wpi_release_firmware(void); 118 static int wpi_load_firmware(struct wpi_softc *); 119 static void wpi_calib_timeout(void *); 120 static void wpi_iter_func(void *, struct ieee80211_node *); 121 static void wpi_power_calibration(struct wpi_softc *, int); 122 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 123 struct wpi_rx_data *); 124 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 125 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 126 static void wpi_notif_intr(struct wpi_softc *); 127 static int wpi_intr(void *); 128 static void wpi_softintr(void *); 129 static void wpi_read_eeprom(struct wpi_softc *); 130 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 131 static void wpi_read_eeprom_group(struct wpi_softc *, int); 132 static uint8_t wpi_plcp_signal(int); 133 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 134 struct ieee80211_node *, int); 135 static void wpi_start(struct ifnet *); 136 static void wpi_watchdog(struct ifnet *); 137 static int wpi_ioctl(struct ifnet *, u_long, void *); 138 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 139 static int wpi_wme_update(struct ieee80211com *); 140 static int wpi_mrr_setup(struct wpi_softc *); 141 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 142 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 143 static int wpi_set_txpower(struct wpi_softc *, 144 struct ieee80211_channel *, int); 145 static int wpi_get_power_index(struct wpi_softc *, 146 struct wpi_power_group *, struct ieee80211_channel *, int); 147 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 148 static int wpi_auth(struct wpi_softc *); 149 static int wpi_scan(struct wpi_softc *); 150 static int wpi_config(struct wpi_softc *); 151 static void wpi_stop_master(struct wpi_softc *); 152 static int wpi_power_up(struct wpi_softc *); 153 static int wpi_reset(struct wpi_softc *); 154 static void wpi_hw_config(struct wpi_softc *); 155 static int wpi_init(struct ifnet *); 156 static void wpi_stop(struct ifnet *, int); 157 static bool wpi_resume(device_t, const pmf_qual_t *); 158 static int wpi_getrfkill(struct wpi_softc *); 159 static void wpi_sysctlattach(struct wpi_softc *); 160 static void wpi_rsw_thread(void *); 161 162 #ifdef WPI_DEBUG 163 #define DPRINTF(x) do { if (wpi_debug > 0) printf x; } while (0) 164 #define DPRINTFN(n, x) do { if (wpi_debug >= (n)) printf x; } while (0) 165 int wpi_debug = 1; 166 #else 167 #define DPRINTF(x) 168 #define DPRINTFN(n, x) 169 #endif 170 171 CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 172 wpi_detach, NULL); 173 174 static int 175 wpi_match(device_t parent, cfdata_t match __unused, void *aux) 176 { 177 struct pci_attach_args *pa = aux; 178 179 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 180 return 0; 181 182 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 183 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 184 return 1; 185 186 return 0; 187 } 188 189 /* Base Address Register */ 190 #define WPI_PCI_BAR0 0x10 191 192 static int 193 wpi_attach_once(void) 194 { 195 196 mutex_init(&wpi_firmware_mutex, MUTEX_DEFAULT, IPL_NONE); 197 return 0; 198 } 199 200 static void 201 wpi_attach(device_t parent __unused, device_t self, void *aux) 202 { 203 struct wpi_softc *sc = device_private(self); 204 struct ieee80211com *ic = &sc->sc_ic; 205 struct ifnet *ifp = &sc->sc_ec.ec_if; 206 struct pci_attach_args *pa = aux; 207 const char *intrstr; 208 bus_space_tag_t memt; 209 bus_space_handle_t memh; 210 pcireg_t data; 211 int ac, error; 212 char intrbuf[PCI_INTRSTR_LEN]; 213 214 RUN_ONCE(&wpi_firmware_init, wpi_attach_once); 215 sc->fw_used = false; 216 217 sc->sc_dev = self; 218 sc->sc_pct = pa->pa_pc; 219 sc->sc_pcitag = pa->pa_tag; 220 221 sc->sc_rsw_status = WPI_RSW_UNKNOWN; 222 sc->sc_rsw.smpsw_name = device_xname(self); 223 sc->sc_rsw.smpsw_type = PSWITCH_TYPE_RADIO; 224 error = sysmon_pswitch_register(&sc->sc_rsw); 225 if (error) { 226 aprint_error_dev(self, 227 "unable to register radio switch with sysmon\n"); 228 return; 229 } 230 mutex_init(&sc->sc_rsw_mtx, MUTEX_DEFAULT, IPL_NONE); 231 cv_init(&sc->sc_rsw_cv, "wpirsw"); 232 sc->sc_rsw_suspend = false; 233 sc->sc_rsw_suspended = false; 234 if (kthread_create(PRI_NONE, 0, NULL, 235 wpi_rsw_thread, sc, &sc->sc_rsw_lwp, "%s", device_xname(self))) { 236 aprint_error_dev(self, "couldn't create switch thread\n"); 237 } 238 239 callout_init(&sc->calib_to, 0); 240 callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); 241 242 pci_aprint_devinfo(pa, NULL); 243 244 /* enable bus-mastering */ 245 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 246 data |= PCI_COMMAND_MASTER_ENABLE; 247 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 248 249 /* map the register window */ 250 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 251 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 252 if (error != 0) { 253 aprint_error_dev(self, "could not map memory space\n"); 254 return; 255 } 256 257 sc->sc_st = memt; 258 sc->sc_sh = memh; 259 sc->sc_dmat = pa->pa_dmat; 260 261 sc->sc_soft_ih = softint_establish(SOFTINT_NET, wpi_softintr, sc); 262 if (sc->sc_soft_ih == NULL) { 263 aprint_error_dev(self, "could not establish softint\n"); 264 goto unmap; 265 } 266 267 if (pci_intr_alloc(pa, &sc->sc_pihp, NULL, 0)) { 268 aprint_error_dev(self, "could not map interrupt\n"); 269 goto failsi; 270 } 271 272 intrstr = pci_intr_string(sc->sc_pct, sc->sc_pihp[0], intrbuf, 273 sizeof(intrbuf)); 274 sc->sc_ih = pci_intr_establish_xname(sc->sc_pct, sc->sc_pihp[0], 275 IPL_NET, wpi_intr, sc, device_xname(self)); 276 if (sc->sc_ih == NULL) { 277 aprint_error_dev(self, "could not establish interrupt"); 278 if (intrstr != NULL) 279 aprint_error(" at %s", intrstr); 280 aprint_error("\n"); 281 goto failia; 282 } 283 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 284 285 /* 286 * Put adapter into a known state. 287 */ 288 if ((error = wpi_reset(sc)) != 0) { 289 aprint_error_dev(self, "could not reset adapter\n"); 290 goto failih; 291 } 292 293 /* 294 * Allocate DMA memory for firmware transfers. 295 */ 296 if ((error = wpi_alloc_fwmem(sc)) != 0) { 297 aprint_error_dev(self, "could not allocate firmware memory\n"); 298 goto failih; 299 } 300 301 /* 302 * Allocate shared page and Tx/Rx rings. 303 */ 304 if ((error = wpi_alloc_shared(sc)) != 0) { 305 aprint_error_dev(self, "could not allocate shared area\n"); 306 goto fail1; 307 } 308 309 if ((error = wpi_alloc_rpool(sc)) != 0) { 310 aprint_error_dev(self, "could not allocate Rx buffers\n"); 311 goto fail2; 312 } 313 314 for (ac = 0; ac < 4; ac++) { 315 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, 316 ac); 317 if (error != 0) { 318 aprint_error_dev(self, 319 "could not allocate Tx ring %d\n", ac); 320 goto fail3; 321 } 322 } 323 324 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 325 if (error != 0) { 326 aprint_error_dev(self, "could not allocate command ring\n"); 327 goto fail3; 328 } 329 330 error = wpi_alloc_rx_ring(sc, &sc->rxq); 331 if (error != 0) { 332 aprint_error_dev(self, "could not allocate Rx ring\n"); 333 goto fail4; 334 } 335 336 ic->ic_ifp = ifp; 337 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 338 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 339 ic->ic_state = IEEE80211_S_INIT; 340 341 /* set device capabilities */ 342 ic->ic_caps = 343 IEEE80211_C_WPA | /* 802.11i */ 344 IEEE80211_C_MONITOR | /* monitor mode supported */ 345 IEEE80211_C_TXPMGT | /* tx power management */ 346 IEEE80211_C_SHSLOT | /* short slot time supported */ 347 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 348 IEEE80211_C_WME; /* 802.11e */ 349 350 /* read supported channels and MAC address from EEPROM */ 351 wpi_read_eeprom(sc); 352 353 /* set supported .11a, .11b and .11g rates */ 354 ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_std_rateset_11a; 355 ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; 356 ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; 357 358 /* IBSS channel undefined for now */ 359 ic->ic_ibss_chan = &ic->ic_channels[0]; 360 361 ifp->if_softc = sc; 362 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 363 ifp->if_init = wpi_init; 364 ifp->if_stop = wpi_stop; 365 ifp->if_ioctl = wpi_ioctl; 366 ifp->if_start = wpi_start; 367 ifp->if_watchdog = wpi_watchdog; 368 IFQ_SET_READY(&ifp->if_snd); 369 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 370 371 error = if_initialize(ifp); 372 if (error != 0) { 373 aprint_error_dev(sc->sc_dev, "if_initialize failed(%d)\n", 374 error); 375 goto fail5; 376 } 377 ieee80211_ifattach(ic); 378 /* Use common softint-based if_input */ 379 ifp->if_percpuq = if_percpuq_create(ifp); 380 if_register(ifp); 381 382 /* override default methods */ 383 ic->ic_node_alloc = wpi_node_alloc; 384 ic->ic_newassoc = wpi_newassoc; 385 ic->ic_wme.wme_update = wpi_wme_update; 386 387 /* override state transition machine */ 388 sc->sc_newstate = ic->ic_newstate; 389 ic->ic_newstate = wpi_newstate; 390 391 /* XXX media locking needs revisiting */ 392 mutex_init(&sc->sc_media_mtx, MUTEX_DEFAULT, IPL_SOFTNET); 393 ieee80211_media_init_with_lock(ic, 394 wpi_media_change, ieee80211_media_status, &sc->sc_media_mtx); 395 396 sc->amrr.amrr_min_success_threshold = 1; 397 sc->amrr.amrr_max_success_threshold = 15; 398 399 wpi_sysctlattach(sc); 400 401 if (pmf_device_register(self, NULL, wpi_resume)) 402 pmf_class_network_register(self, ifp); 403 else 404 aprint_error_dev(self, "couldn't establish power handler\n"); 405 406 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 407 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 408 &sc->sc_drvbpf); 409 410 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 411 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 412 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 413 414 sc->sc_txtap_len = sizeof sc->sc_txtapu; 415 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 416 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 417 418 ieee80211_announce(ic); 419 420 return; 421 422 /* free allocated memory if something failed during attachment */ 423 fail5: wpi_free_rx_ring(sc, &sc->rxq); 424 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 425 fail3: while (--ac >= 0) 426 wpi_free_tx_ring(sc, &sc->txq[ac]); 427 wpi_free_rpool(sc); 428 fail2: wpi_free_shared(sc); 429 fail1: wpi_free_fwmem(sc); 430 failih: pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 431 sc->sc_ih = NULL; 432 failia: pci_intr_release(sc->sc_pct, sc->sc_pihp, 1); 433 sc->sc_pihp = NULL; 434 failsi: softint_disestablish(sc->sc_soft_ih); 435 sc->sc_soft_ih = NULL; 436 unmap: bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 437 } 438 439 static int 440 wpi_detach(device_t self, int flags __unused) 441 { 442 struct wpi_softc *sc = device_private(self); 443 struct ifnet *ifp = sc->sc_ic.ic_ifp; 444 int ac; 445 446 wpi_stop(ifp, 1); 447 448 if (ifp != NULL) 449 bpf_detach(ifp); 450 ieee80211_ifdetach(&sc->sc_ic); 451 if (ifp != NULL) 452 if_detach(ifp); 453 454 for (ac = 0; ac < 4; ac++) 455 wpi_free_tx_ring(sc, &sc->txq[ac]); 456 wpi_free_tx_ring(sc, &sc->cmdq); 457 wpi_free_rx_ring(sc, &sc->rxq); 458 wpi_free_rpool(sc); 459 wpi_free_shared(sc); 460 461 if (sc->sc_ih != NULL) { 462 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 463 sc->sc_ih = NULL; 464 } 465 if (sc->sc_pihp != NULL) { 466 pci_intr_release(sc->sc_pct, sc->sc_pihp, 1); 467 sc->sc_pihp = NULL; 468 } 469 if (sc->sc_soft_ih != NULL) { 470 softint_disestablish(sc->sc_soft_ih); 471 sc->sc_soft_ih = NULL; 472 } 473 474 mutex_enter(&sc->sc_rsw_mtx); 475 sc->sc_dying = 1; 476 cv_signal(&sc->sc_rsw_cv); 477 while (sc->sc_rsw_lwp != NULL) 478 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 479 mutex_exit(&sc->sc_rsw_mtx); 480 sysmon_pswitch_unregister(&sc->sc_rsw); 481 482 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 483 484 if (sc->fw_used) { 485 sc->fw_used = false; 486 wpi_release_firmware(); 487 } 488 cv_destroy(&sc->sc_rsw_cv); 489 mutex_destroy(&sc->sc_rsw_mtx); 490 return 0; 491 } 492 493 static int 494 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, void **kvap, 495 bus_size_t size, bus_size_t alignment, int flags) 496 { 497 int nsegs, error; 498 499 dma->tag = tag; 500 dma->size = size; 501 502 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 503 if (error != 0) 504 goto fail; 505 506 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 507 flags); 508 if (error != 0) 509 goto fail; 510 511 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 512 if (error != 0) 513 goto fail; 514 515 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 516 if (error != 0) 517 goto fail; 518 519 memset(dma->vaddr, 0, size); 520 bus_dmamap_sync(dma->tag, dma->map, 0, size, BUS_DMASYNC_PREWRITE); 521 522 dma->paddr = dma->map->dm_segs[0].ds_addr; 523 if (kvap != NULL) 524 *kvap = dma->vaddr; 525 526 return 0; 527 528 fail: wpi_dma_contig_free(dma); 529 return error; 530 } 531 532 static void 533 wpi_dma_contig_free(struct wpi_dma_info *dma) 534 { 535 if (dma->map != NULL) { 536 if (dma->vaddr != NULL) { 537 bus_dmamap_unload(dma->tag, dma->map); 538 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 539 bus_dmamem_free(dma->tag, &dma->seg, 1); 540 dma->vaddr = NULL; 541 } 542 bus_dmamap_destroy(dma->tag, dma->map); 543 dma->map = NULL; 544 } 545 } 546 547 /* 548 * Allocate a shared page between host and NIC. 549 */ 550 static int 551 wpi_alloc_shared(struct wpi_softc *sc) 552 { 553 int error; 554 555 /* must be aligned on a 4K-page boundary */ 556 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 557 (void **)&sc->shared, sizeof (struct wpi_shared), WPI_BUF_ALIGN, 558 BUS_DMA_NOWAIT); 559 if (error != 0) 560 aprint_error_dev(sc->sc_dev, 561 "could not allocate shared area DMA memory\n"); 562 563 return error; 564 } 565 566 static void 567 wpi_free_shared(struct wpi_softc *sc) 568 { 569 wpi_dma_contig_free(&sc->shared_dma); 570 } 571 572 /* 573 * Allocate DMA-safe memory for firmware transfer. 574 */ 575 static int 576 wpi_alloc_fwmem(struct wpi_softc *sc) 577 { 578 int error; 579 580 /* allocate enough contiguous space to store text and data */ 581 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 582 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 583 BUS_DMA_NOWAIT); 584 585 if (error != 0) 586 aprint_error_dev(sc->sc_dev, 587 "could not allocate firmware transfer area DMA memory\n"); 588 return error; 589 } 590 591 static void 592 wpi_free_fwmem(struct wpi_softc *sc) 593 { 594 wpi_dma_contig_free(&sc->fw_dma); 595 } 596 597 static struct wpi_rbuf * 598 wpi_alloc_rbuf(struct wpi_softc *sc) 599 { 600 struct wpi_rbuf *rbuf; 601 602 mutex_enter(&sc->rxq.freelist_mtx); 603 rbuf = SLIST_FIRST(&sc->rxq.freelist); 604 if (rbuf != NULL) { 605 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 606 } 607 mutex_exit(&sc->rxq.freelist_mtx); 608 609 return rbuf; 610 } 611 612 /* 613 * This is called automatically by the network stack when the mbuf to which our 614 * Rx buffer is attached is freed. 615 */ 616 static void 617 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 618 { 619 struct wpi_rbuf *rbuf = arg; 620 struct wpi_softc *sc = rbuf->sc; 621 622 /* put the buffer back in the free list */ 623 624 mutex_enter(&sc->rxq.freelist_mtx); 625 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 626 mutex_exit(&sc->rxq.freelist_mtx); 627 628 if (__predict_true(m != NULL)) 629 pool_cache_put(mb_cache, m); 630 } 631 632 static int 633 wpi_alloc_rpool(struct wpi_softc *sc) 634 { 635 struct wpi_rx_ring *ring = &sc->rxq; 636 int i, error; 637 638 /* allocate a big chunk of DMA'able memory.. */ 639 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 640 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 641 if (error != 0) { 642 aprint_normal_dev(sc->sc_dev, 643 "could not allocate Rx buffers DMA memory\n"); 644 return error; 645 } 646 647 /* ..and split it into 3KB chunks */ 648 mutex_init(&ring->freelist_mtx, MUTEX_DEFAULT, IPL_NET); 649 SLIST_INIT(&ring->freelist); 650 for (i = 0; i < WPI_RBUF_COUNT; i++) { 651 struct wpi_rbuf *rbuf = &ring->rbuf[i]; 652 653 rbuf->sc = sc; /* backpointer for callbacks */ 654 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 655 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 656 657 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 658 } 659 660 return 0; 661 } 662 663 static void 664 wpi_free_rpool(struct wpi_softc *sc) 665 { 666 mutex_destroy(&sc->rxq.freelist_mtx); 667 wpi_dma_contig_free(&sc->rxq.buf_dma); 668 } 669 670 static int 671 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 672 { 673 bus_size_t size; 674 int i, error; 675 676 ring->cur = 0; 677 678 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 679 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 680 (void **)&ring->desc, size, 681 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 682 if (error != 0) { 683 aprint_error_dev(sc->sc_dev, 684 "could not allocate rx ring DMA memory\n"); 685 goto fail; 686 } 687 688 /* 689 * Setup Rx buffers. 690 */ 691 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 692 struct wpi_rx_data *data = &ring->data[i]; 693 struct wpi_rbuf *rbuf; 694 695 error = bus_dmamap_create(sc->sc_dmat, WPI_RBUF_SIZE, 1, 696 WPI_RBUF_SIZE, 0, BUS_DMA_NOWAIT, &data->map); 697 if (error) { 698 aprint_error_dev(sc->sc_dev, 699 "could not allocate rx dma map\n"); 700 goto fail; 701 } 702 703 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 704 if (data->m == NULL) { 705 aprint_error_dev(sc->sc_dev, 706 "could not allocate rx mbuf\n"); 707 error = ENOMEM; 708 goto fail; 709 } 710 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 711 m_freem(data->m); 712 data->m = NULL; 713 aprint_error_dev(sc->sc_dev, 714 "could not allocate rx cluster\n"); 715 error = ENOMEM; 716 goto fail; 717 } 718 /* attach Rx buffer to mbuf */ 719 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 720 rbuf); 721 data->m->m_flags |= M_EXT_RW; 722 723 error = bus_dmamap_load(sc->sc_dmat, data->map, 724 mtod(data->m, void *), WPI_RBUF_SIZE, NULL, 725 BUS_DMA_NOWAIT | BUS_DMA_READ); 726 if (error) { 727 aprint_error_dev(sc->sc_dev, 728 "could not load mbuf: %d\n", error); 729 goto fail; 730 } 731 732 ring->desc[i] = htole32(rbuf->paddr); 733 } 734 735 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, size, 736 BUS_DMASYNC_PREWRITE); 737 738 return 0; 739 740 fail: wpi_free_rx_ring(sc, ring); 741 return error; 742 } 743 744 static void 745 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 746 { 747 int ntries; 748 749 wpi_mem_lock(sc); 750 751 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 752 for (ntries = 0; ntries < 100; ntries++) { 753 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 754 break; 755 DELAY(10); 756 } 757 #ifdef WPI_DEBUG 758 if (ntries == 100 && wpi_debug > 0) 759 aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n"); 760 #endif 761 wpi_mem_unlock(sc); 762 763 ring->cur = 0; 764 } 765 766 static void 767 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 768 { 769 int i; 770 771 wpi_dma_contig_free(&ring->desc_dma); 772 773 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 774 if (ring->data[i].m != NULL) { 775 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 776 m_freem(ring->data[i].m); 777 } 778 if (ring->data[i].map != NULL) { 779 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 780 } 781 } 782 } 783 784 static int 785 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 786 int qid) 787 { 788 int i, error; 789 790 ring->qid = qid; 791 ring->count = count; 792 ring->queued = 0; 793 ring->cur = 0; 794 795 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 796 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 797 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 798 if (error != 0) { 799 aprint_error_dev(sc->sc_dev, 800 "could not allocate tx ring DMA memory\n"); 801 goto fail; 802 } 803 804 /* update shared page with ring's base address */ 805 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 806 bus_dmamap_sync(sc->sc_dmat, sc->shared_dma.map, 0, 807 sizeof(struct wpi_shared), BUS_DMASYNC_PREWRITE); 808 809 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 810 (void **)&ring->cmd, count * sizeof (struct wpi_tx_cmd), 4, 811 BUS_DMA_NOWAIT); 812 if (error != 0) { 813 aprint_error_dev(sc->sc_dev, 814 "could not allocate tx cmd DMA memory\n"); 815 goto fail; 816 } 817 818 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 819 M_NOWAIT | M_ZERO); 820 if (ring->data == NULL) { 821 aprint_error_dev(sc->sc_dev, 822 "could not allocate tx data slots\n"); 823 goto fail; 824 } 825 826 for (i = 0; i < count; i++) { 827 struct wpi_tx_data *data = &ring->data[i]; 828 829 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 830 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 831 &data->map); 832 if (error != 0) { 833 aprint_error_dev(sc->sc_dev, 834 "could not create tx buf DMA map\n"); 835 goto fail; 836 } 837 } 838 839 return 0; 840 841 fail: wpi_free_tx_ring(sc, ring); 842 return error; 843 } 844 845 static void 846 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 847 { 848 int i, ntries; 849 850 wpi_mem_lock(sc); 851 852 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 853 for (ntries = 0; ntries < 100; ntries++) { 854 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 855 break; 856 DELAY(10); 857 } 858 #ifdef WPI_DEBUG 859 if (ntries == 100 && wpi_debug > 0) { 860 aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n", 861 ring->qid); 862 } 863 #endif 864 wpi_mem_unlock(sc); 865 866 for (i = 0; i < ring->count; i++) { 867 struct wpi_tx_data *data = &ring->data[i]; 868 869 if (data->m != NULL) { 870 bus_dmamap_unload(sc->sc_dmat, data->map); 871 m_freem(data->m); 872 data->m = NULL; 873 } 874 } 875 876 ring->queued = 0; 877 ring->cur = 0; 878 } 879 880 static void 881 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 882 { 883 int i; 884 885 wpi_dma_contig_free(&ring->desc_dma); 886 wpi_dma_contig_free(&ring->cmd_dma); 887 888 if (ring->data != NULL) { 889 for (i = 0; i < ring->count; i++) { 890 struct wpi_tx_data *data = &ring->data[i]; 891 892 if (data->m != NULL) { 893 bus_dmamap_unload(sc->sc_dmat, data->map); 894 m_freem(data->m); 895 } 896 } 897 free(ring->data, M_DEVBUF); 898 } 899 } 900 901 /*ARGUSED*/ 902 static struct ieee80211_node * 903 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 904 { 905 struct wpi_node *wn; 906 907 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 908 909 return (struct ieee80211_node *)wn; 910 } 911 912 static void 913 wpi_newassoc(struct ieee80211_node *ni, int isnew) 914 { 915 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 916 int i; 917 918 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 919 920 /* set rate to some reasonable initial value */ 921 for (i = ni->ni_rates.rs_nrates - 1; 922 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 923 i--); 924 ni->ni_txrate = i; 925 } 926 927 static int 928 wpi_media_change(struct ifnet *ifp) 929 { 930 int error; 931 932 error = ieee80211_media_change(ifp); 933 if (error != ENETRESET) 934 return error; 935 936 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 937 wpi_init(ifp); 938 939 return 0; 940 } 941 942 static int 943 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 944 { 945 struct ifnet *ifp = ic->ic_ifp; 946 struct wpi_softc *sc = ifp->if_softc; 947 struct ieee80211_node *ni; 948 enum ieee80211_state ostate = ic->ic_state; 949 int error; 950 951 callout_stop(&sc->calib_to); 952 953 switch (nstate) { 954 case IEEE80211_S_SCAN: 955 956 if (sc->is_scanning) 957 break; 958 959 sc->is_scanning = true; 960 961 if (ostate != IEEE80211_S_SCAN) { 962 /* make the link LED blink while we're scanning */ 963 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 964 } 965 966 if ((error = wpi_scan(sc)) != 0) { 967 aprint_error_dev(sc->sc_dev, 968 "could not initiate scan\n"); 969 return error; 970 } 971 break; 972 973 case IEEE80211_S_ASSOC: 974 if (ic->ic_state != IEEE80211_S_RUN) 975 break; 976 /* FALLTHROUGH */ 977 case IEEE80211_S_AUTH: 978 /* reset state to handle reassociations correctly */ 979 sc->config.associd = 0; 980 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 981 982 if ((error = wpi_auth(sc)) != 0) { 983 aprint_error_dev(sc->sc_dev, 984 "could not send authentication request\n"); 985 return error; 986 } 987 break; 988 989 case IEEE80211_S_RUN: 990 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 991 /* link LED blinks while monitoring */ 992 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 993 break; 994 } 995 ni = ic->ic_bss; 996 997 if (ic->ic_opmode != IEEE80211_M_STA) { 998 (void) wpi_auth(sc); /* XXX */ 999 wpi_setup_beacon(sc, ni); 1000 } 1001 1002 wpi_enable_tsf(sc, ni); 1003 1004 /* update adapter's configuration */ 1005 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 1006 /* short preamble/slot time are negotiated when associating */ 1007 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 1008 WPI_CONFIG_SHSLOT); 1009 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1010 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 1011 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1012 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 1013 sc->config.filter |= htole32(WPI_FILTER_BSS); 1014 if (ic->ic_opmode != IEEE80211_M_STA) 1015 sc->config.filter |= htole32(WPI_FILTER_BEACON); 1016 1017 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 1018 1019 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 1020 sc->config.flags)); 1021 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 1022 sizeof (struct wpi_config), 1); 1023 if (error != 0) { 1024 aprint_error_dev(sc->sc_dev, 1025 "could not update configuration\n"); 1026 return error; 1027 } 1028 1029 /* configuration has changed, set Tx power accordingly */ 1030 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 1)) != 0) { 1031 aprint_error_dev(sc->sc_dev, 1032 "could not set Tx power\n"); 1033 return error; 1034 } 1035 1036 if (ic->ic_opmode == IEEE80211_M_STA) { 1037 /* fake a join to init the tx rate */ 1038 wpi_newassoc(ni, 1); 1039 } 1040 1041 /* start periodic calibration timer */ 1042 sc->calib_cnt = 0; 1043 callout_schedule(&sc->calib_to, hz/2); 1044 1045 /* link LED always on while associated */ 1046 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 1047 break; 1048 1049 case IEEE80211_S_INIT: 1050 sc->is_scanning = false; 1051 break; 1052 } 1053 1054 return sc->sc_newstate(ic, nstate, arg); 1055 } 1056 1057 /* 1058 * Grab exclusive access to NIC memory. 1059 */ 1060 static void 1061 wpi_mem_lock(struct wpi_softc *sc) 1062 { 1063 uint32_t tmp; 1064 int ntries; 1065 1066 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1067 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1068 1069 /* spin until we actually get the lock */ 1070 for (ntries = 0; ntries < 1000; ntries++) { 1071 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1072 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1073 break; 1074 DELAY(10); 1075 } 1076 if (ntries == 1000) 1077 aprint_error_dev(sc->sc_dev, "could not lock memory\n"); 1078 } 1079 1080 /* 1081 * Release lock on NIC memory. 1082 */ 1083 static void 1084 wpi_mem_unlock(struct wpi_softc *sc) 1085 { 1086 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1087 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1088 } 1089 1090 static uint32_t 1091 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1092 { 1093 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1094 return WPI_READ(sc, WPI_READ_MEM_DATA); 1095 } 1096 1097 static void 1098 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1099 { 1100 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1101 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1102 } 1103 1104 static void 1105 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1106 const uint32_t *data, int wlen) 1107 { 1108 for (; wlen > 0; wlen--, data++, addr += 4) 1109 wpi_mem_write(sc, addr, *data); 1110 } 1111 1112 /* 1113 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1114 * instead of using the traditional bit-bang method. 1115 */ 1116 static int 1117 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1118 { 1119 uint8_t *out = data; 1120 uint32_t val; 1121 int ntries; 1122 1123 wpi_mem_lock(sc); 1124 for (; len > 0; len -= 2, addr++) { 1125 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1126 1127 for (ntries = 0; ntries < 10; ntries++) { 1128 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1129 WPI_EEPROM_READY) 1130 break; 1131 DELAY(5); 1132 } 1133 if (ntries == 10) { 1134 aprint_error_dev(sc->sc_dev, "could not read EEPROM\n"); 1135 return ETIMEDOUT; 1136 } 1137 *out++ = val >> 16; 1138 if (len > 1) 1139 *out++ = val >> 24; 1140 } 1141 wpi_mem_unlock(sc); 1142 1143 return 0; 1144 } 1145 1146 /* 1147 * The firmware boot code is small and is intended to be copied directly into 1148 * the NIC internal memory. 1149 */ 1150 int 1151 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1152 { 1153 int ntries; 1154 1155 size /= sizeof (uint32_t); 1156 1157 wpi_mem_lock(sc); 1158 1159 /* copy microcode image into NIC memory */ 1160 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1161 (const uint32_t *)ucode, size); 1162 1163 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1164 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1165 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1166 1167 /* run microcode */ 1168 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1169 1170 /* wait for transfer to complete */ 1171 for (ntries = 0; ntries < 1000; ntries++) { 1172 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1173 break; 1174 DELAY(10); 1175 } 1176 if (ntries == 1000) { 1177 wpi_mem_unlock(sc); 1178 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1179 return ETIMEDOUT; 1180 } 1181 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1182 1183 wpi_mem_unlock(sc); 1184 1185 return 0; 1186 } 1187 1188 static int 1189 wpi_cache_firmware(struct wpi_softc *sc) 1190 { 1191 const char *const fwname = wpi_firmware_name; 1192 firmware_handle_t fw; 1193 int error; 1194 1195 /* sc is used here only to report error messages. */ 1196 1197 mutex_enter(&wpi_firmware_mutex); 1198 1199 if (wpi_firmware_users == SIZE_MAX) { 1200 mutex_exit(&wpi_firmware_mutex); 1201 return ENFILE; /* Too many of something in the system... */ 1202 } 1203 if (wpi_firmware_users++) { 1204 KASSERT(wpi_firmware_image != NULL); 1205 KASSERT(wpi_firmware_size > 0); 1206 mutex_exit(&wpi_firmware_mutex); 1207 return 0; /* Already good to go. */ 1208 } 1209 1210 KASSERT(wpi_firmware_image == NULL); 1211 KASSERT(wpi_firmware_size == 0); 1212 1213 /* load firmware image from disk */ 1214 if ((error = firmware_open("if_wpi", fwname, &fw)) != 0) { 1215 aprint_error_dev(sc->sc_dev, 1216 "could not open firmware file %s: %d\n", fwname, error); 1217 goto fail0; 1218 } 1219 1220 wpi_firmware_size = firmware_get_size(fw); 1221 1222 if (wpi_firmware_size > sizeof (struct wpi_firmware_hdr) + 1223 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ + 1224 WPI_FW_INIT_TEXT_MAXSZ + WPI_FW_INIT_DATA_MAXSZ + 1225 WPI_FW_BOOT_TEXT_MAXSZ) { 1226 aprint_error_dev(sc->sc_dev, 1227 "firmware file %s too large: %zu bytes\n", 1228 fwname, wpi_firmware_size); 1229 error = EFBIG; 1230 goto fail1; 1231 } 1232 1233 if (wpi_firmware_size < sizeof (struct wpi_firmware_hdr)) { 1234 aprint_error_dev(sc->sc_dev, 1235 "firmware file %s too small: %zu bytes\n", 1236 fwname, wpi_firmware_size); 1237 error = EINVAL; 1238 goto fail1; 1239 } 1240 1241 wpi_firmware_image = firmware_malloc(wpi_firmware_size); 1242 if (wpi_firmware_image == NULL) { 1243 aprint_error_dev(sc->sc_dev, 1244 "not enough memory for firmware file %s\n", fwname); 1245 error = ENOMEM; 1246 goto fail1; 1247 } 1248 1249 error = firmware_read(fw, 0, wpi_firmware_image, wpi_firmware_size); 1250 if (error != 0) { 1251 aprint_error_dev(sc->sc_dev, 1252 "error reading firmware file %s: %d\n", fwname, error); 1253 goto fail2; 1254 } 1255 1256 /* Success! */ 1257 firmware_close(fw); 1258 mutex_exit(&wpi_firmware_mutex); 1259 return 0; 1260 1261 fail2: 1262 firmware_free(wpi_firmware_image, wpi_firmware_size); 1263 wpi_firmware_image = NULL; 1264 fail1: 1265 wpi_firmware_size = 0; 1266 firmware_close(fw); 1267 fail0: 1268 KASSERT(wpi_firmware_users == 1); 1269 wpi_firmware_users = 0; 1270 KASSERT(wpi_firmware_image == NULL); 1271 KASSERT(wpi_firmware_size == 0); 1272 1273 mutex_exit(&wpi_firmware_mutex); 1274 return error; 1275 } 1276 1277 static void 1278 wpi_release_firmware(void) 1279 { 1280 1281 mutex_enter(&wpi_firmware_mutex); 1282 1283 KASSERT(wpi_firmware_users > 0); 1284 KASSERT(wpi_firmware_image != NULL); 1285 KASSERT(wpi_firmware_size != 0); 1286 1287 if (--wpi_firmware_users == 0) { 1288 firmware_free(wpi_firmware_image, wpi_firmware_size); 1289 wpi_firmware_image = NULL; 1290 wpi_firmware_size = 0; 1291 } 1292 1293 mutex_exit(&wpi_firmware_mutex); 1294 } 1295 1296 static int 1297 wpi_load_firmware(struct wpi_softc *sc) 1298 { 1299 struct wpi_dma_info *dma = &sc->fw_dma; 1300 struct wpi_firmware_hdr hdr; 1301 const uint8_t *init_text, *init_data, *main_text, *main_data; 1302 const uint8_t *boot_text; 1303 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1304 uint32_t boot_textsz; 1305 size_t size; 1306 int error; 1307 1308 if (!sc->fw_used) { 1309 if ((error = wpi_cache_firmware(sc)) != 0) 1310 return error; 1311 sc->fw_used = true; 1312 } 1313 1314 KASSERT(sc->fw_used); 1315 KASSERT(wpi_firmware_image != NULL); 1316 KASSERT(wpi_firmware_size > sizeof(hdr)); 1317 1318 memcpy(&hdr, wpi_firmware_image, sizeof(hdr)); 1319 1320 main_textsz = le32toh(hdr.main_textsz); 1321 main_datasz = le32toh(hdr.main_datasz); 1322 init_textsz = le32toh(hdr.init_textsz); 1323 init_datasz = le32toh(hdr.init_datasz); 1324 boot_textsz = le32toh(hdr.boot_textsz); 1325 1326 /* sanity-check firmware segments sizes */ 1327 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1328 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1329 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1330 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1331 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1332 (boot_textsz & 3) != 0) { 1333 aprint_error_dev(sc->sc_dev, "invalid firmware header\n"); 1334 error = EINVAL; 1335 goto free_firmware; 1336 } 1337 1338 /* check that all firmware segments are present */ 1339 size = sizeof (struct wpi_firmware_hdr) + main_textsz + 1340 main_datasz + init_textsz + init_datasz + boot_textsz; 1341 if (wpi_firmware_size < size) { 1342 aprint_error_dev(sc->sc_dev, 1343 "firmware file truncated: %zu bytes, expected %zu bytes\n", 1344 wpi_firmware_size, size); 1345 error = EINVAL; 1346 goto free_firmware; 1347 } 1348 1349 /* get pointers to firmware segments */ 1350 main_text = wpi_firmware_image + sizeof (struct wpi_firmware_hdr); 1351 main_data = main_text + main_textsz; 1352 init_text = main_data + main_datasz; 1353 init_data = init_text + init_textsz; 1354 boot_text = init_data + init_datasz; 1355 1356 /* copy initialization images into pre-allocated DMA-safe memory */ 1357 memcpy(dma->vaddr, init_data, init_datasz); 1358 memcpy((char *)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, 1359 init_textsz); 1360 1361 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 1362 1363 /* tell adapter where to find initialization images */ 1364 wpi_mem_lock(sc); 1365 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1366 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1367 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1368 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1369 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1370 wpi_mem_unlock(sc); 1371 1372 /* load firmware boot code */ 1373 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1374 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1375 return error; 1376 } 1377 1378 /* now press "execute" ;-) */ 1379 WPI_WRITE(sc, WPI_RESET, 0); 1380 1381 /* wait at most one second for first alive notification */ 1382 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1383 /* this isn't what was supposed to happen.. */ 1384 aprint_error_dev(sc->sc_dev, 1385 "timeout waiting for adapter to initialize\n"); 1386 } 1387 1388 /* copy runtime images into pre-allocated DMA-safe memory */ 1389 memcpy(dma->vaddr, main_data, main_datasz); 1390 memcpy((char *)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, 1391 main_textsz); 1392 1393 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 1394 1395 /* tell adapter where to find runtime images */ 1396 wpi_mem_lock(sc); 1397 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1398 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1399 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1400 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1401 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1402 wpi_mem_unlock(sc); 1403 1404 /* wait at most one second for second alive notification */ 1405 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1406 /* this isn't what was supposed to happen.. */ 1407 aprint_error_dev(sc->sc_dev, 1408 "timeout waiting for adapter to initialize\n"); 1409 } 1410 1411 return error; 1412 1413 free_firmware: 1414 sc->fw_used = false; 1415 wpi_release_firmware(); 1416 return error; 1417 } 1418 1419 static void 1420 wpi_calib_timeout(void *arg) 1421 { 1422 struct wpi_softc *sc = arg; 1423 struct ieee80211com *ic = &sc->sc_ic; 1424 int temp, s; 1425 1426 /* automatic rate control triggered every 500ms */ 1427 if (ic->ic_fixed_rate == -1) { 1428 s = splnet(); 1429 if (ic->ic_opmode == IEEE80211_M_STA) 1430 wpi_iter_func(sc, ic->ic_bss); 1431 else 1432 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1433 splx(s); 1434 } 1435 1436 /* update sensor data */ 1437 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1438 1439 /* automatic power calibration every 60s */ 1440 if (++sc->calib_cnt >= 120) { 1441 wpi_power_calibration(sc, temp); 1442 sc->calib_cnt = 0; 1443 } 1444 1445 callout_schedule(&sc->calib_to, hz/2); 1446 } 1447 1448 static void 1449 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1450 { 1451 struct wpi_softc *sc = arg; 1452 struct wpi_node *wn = (struct wpi_node *)ni; 1453 1454 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1455 } 1456 1457 /* 1458 * This function is called periodically (every 60 seconds) to adjust output 1459 * power to temperature changes. 1460 */ 1461 void 1462 wpi_power_calibration(struct wpi_softc *sc, int temp) 1463 { 1464 /* sanity-check read value */ 1465 if (temp < -260 || temp > 25) { 1466 /* this can't be correct, ignore */ 1467 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1468 return; 1469 } 1470 1471 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1472 1473 /* adjust Tx power if need be */ 1474 if (abs(temp - sc->temp) <= 6) 1475 return; 1476 1477 sc->temp = temp; 1478 1479 if (wpi_set_txpower(sc, sc->sc_ic.ic_curchan, 1) != 0) { 1480 /* just warn, too bad for the automatic calibration... */ 1481 aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n"); 1482 } 1483 } 1484 1485 static void 1486 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1487 struct wpi_rx_data *data) 1488 { 1489 struct ieee80211com *ic = &sc->sc_ic; 1490 struct ifnet *ifp = ic->ic_ifp; 1491 struct wpi_rx_ring *ring = &sc->rxq; 1492 struct wpi_rx_stat *stat; 1493 struct wpi_rx_head *head; 1494 struct wpi_rx_tail *tail; 1495 struct wpi_rbuf *rbuf; 1496 struct ieee80211_frame *wh; 1497 struct ieee80211_node *ni; 1498 struct mbuf *m, *mnew; 1499 int data_off, error, s; 1500 1501 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1502 BUS_DMASYNC_POSTREAD); 1503 stat = (struct wpi_rx_stat *)(desc + 1); 1504 1505 if (stat->len > WPI_STAT_MAXLEN) { 1506 aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n"); 1507 if_statinc(ifp, if_ierrors); 1508 return; 1509 } 1510 1511 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1512 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1513 1514 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1515 "chan=%d tstamp=%" PRIu64 "\n", ring->cur, le32toh(desc->len), 1516 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1517 le64toh(tail->tstamp))); 1518 1519 /* 1520 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1521 * to radiotap in monitor mode). 1522 */ 1523 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1524 DPRINTF(("rx tail flags error %x\n", 1525 le32toh(tail->flags))); 1526 if_statinc(ifp, if_ierrors); 1527 return; 1528 } 1529 1530 /* Compute where are the useful datas */ 1531 data_off = (char*)(head + 1) - mtod(data->m, char*); 1532 1533 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1534 if (mnew == NULL) { 1535 if_statinc(ifp, if_ierrors); 1536 return; 1537 } 1538 1539 rbuf = wpi_alloc_rbuf(sc); 1540 if (rbuf == NULL) { 1541 m_freem(mnew); 1542 if_statinc(ifp, if_ierrors); 1543 return; 1544 } 1545 1546 /* attach Rx buffer to mbuf */ 1547 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1548 rbuf); 1549 mnew->m_flags |= M_EXT_RW; 1550 1551 bus_dmamap_unload(sc->sc_dmat, data->map); 1552 1553 error = bus_dmamap_load(sc->sc_dmat, data->map, 1554 mtod(mnew, void *), WPI_RBUF_SIZE, NULL, 1555 BUS_DMA_NOWAIT | BUS_DMA_READ); 1556 if (error) { 1557 device_printf(sc->sc_dev, 1558 "couldn't load rx mbuf: %d\n", error); 1559 m_freem(mnew); 1560 if_statinc(ifp, if_ierrors); 1561 1562 error = bus_dmamap_load(sc->sc_dmat, data->map, 1563 mtod(data->m, void *), WPI_RBUF_SIZE, NULL, 1564 BUS_DMA_NOWAIT | BUS_DMA_READ); 1565 if (error) 1566 panic("%s: bus_dmamap_load failed: %d\n", 1567 device_xname(sc->sc_dev), error); 1568 return; 1569 } 1570 1571 /* new mbuf loaded successfully */ 1572 m = data->m; 1573 data->m = mnew; 1574 1575 /* update Rx descriptor */ 1576 ring->desc[ring->cur] = htole32(rbuf->paddr); 1577 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 1578 ring->desc_dma.size, 1579 BUS_DMASYNC_PREWRITE); 1580 1581 m->m_data = (char*)m->m_data + data_off; 1582 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1583 1584 /* finalize mbuf */ 1585 m_set_rcvif(m, ifp); 1586 1587 s = splnet(); 1588 1589 if (sc->sc_drvbpf != NULL) { 1590 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1591 1592 tap->wr_flags = 0; 1593 tap->wr_chan_freq = 1594 htole16(ic->ic_channels[head->chan].ic_freq); 1595 tap->wr_chan_flags = 1596 htole16(ic->ic_channels[head->chan].ic_flags); 1597 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1598 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1599 tap->wr_tsft = tail->tstamp; 1600 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1601 switch (head->rate) { 1602 /* CCK rates */ 1603 case 10: tap->wr_rate = 2; break; 1604 case 20: tap->wr_rate = 4; break; 1605 case 55: tap->wr_rate = 11; break; 1606 case 110: tap->wr_rate = 22; break; 1607 /* OFDM rates */ 1608 case 0xd: tap->wr_rate = 12; break; 1609 case 0xf: tap->wr_rate = 18; break; 1610 case 0x5: tap->wr_rate = 24; break; 1611 case 0x7: tap->wr_rate = 36; break; 1612 case 0x9: tap->wr_rate = 48; break; 1613 case 0xb: tap->wr_rate = 72; break; 1614 case 0x1: tap->wr_rate = 96; break; 1615 case 0x3: tap->wr_rate = 108; break; 1616 /* unknown rate: should not happen */ 1617 default: tap->wr_rate = 0; 1618 } 1619 if (le16toh(head->flags) & 0x4) 1620 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1621 1622 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m, BPF_D_IN); 1623 } 1624 1625 /* grab a reference to the source node */ 1626 wh = mtod(m, struct ieee80211_frame *); 1627 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1628 1629 /* send the frame to the 802.11 layer */ 1630 ieee80211_input(ic, m, ni, stat->rssi, 0); 1631 1632 /* release node reference */ 1633 ieee80211_free_node(ni); 1634 1635 splx(s); 1636 } 1637 1638 static void 1639 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1640 { 1641 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1642 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1643 struct wpi_tx_data *data = &ring->data[desc->idx]; 1644 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1645 struct wpi_node *wn = (struct wpi_node *)data->ni; 1646 int s; 1647 1648 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1649 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1650 stat->nkill, stat->rate, le32toh(stat->duration), 1651 le32toh(stat->status))); 1652 1653 s = splnet(); 1654 1655 /* 1656 * Update rate control statistics for the node. 1657 * XXX we should not count mgmt frames since they're always sent at 1658 * the lowest available bit-rate. 1659 */ 1660 wn->amn.amn_txcnt++; 1661 if (stat->ntries > 0) { 1662 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1663 wn->amn.amn_retrycnt++; 1664 } 1665 1666 if ((le32toh(stat->status) & 0xff) != 1) 1667 if_statinc(ifp, if_oerrors); 1668 else 1669 if_statinc(ifp, if_opackets); 1670 1671 bus_dmamap_unload(sc->sc_dmat, data->map); 1672 m_freem(data->m); 1673 data->m = NULL; 1674 ieee80211_free_node(data->ni); 1675 data->ni = NULL; 1676 1677 ring->queued--; 1678 1679 sc->sc_tx_timer = 0; 1680 ifp->if_flags &= ~IFF_OACTIVE; 1681 wpi_start(ifp); /* in softint */ 1682 1683 splx(s); 1684 } 1685 1686 static void 1687 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1688 { 1689 struct wpi_tx_ring *ring = &sc->cmdq; 1690 struct wpi_tx_data *data; 1691 1692 if ((desc->qid & 7) != 4) 1693 return; /* not a command ack */ 1694 1695 data = &ring->data[desc->idx]; 1696 1697 /* if the command was mapped in a mbuf, free it */ 1698 if (data->m != NULL) { 1699 bus_dmamap_unload(sc->sc_dmat, data->map); 1700 m_freem(data->m); 1701 data->m = NULL; 1702 } 1703 1704 wakeup(&ring->cmd[desc->idx]); 1705 } 1706 1707 static void 1708 wpi_notif_intr(struct wpi_softc *sc) 1709 { 1710 struct ieee80211com *ic = &sc->sc_ic; 1711 struct ifnet *ifp = ic->ic_ifp; 1712 uint32_t hw; 1713 int s; 1714 1715 bus_dmamap_sync(sc->sc_dmat, sc->shared_dma.map, 0, 1716 sizeof(struct wpi_shared), BUS_DMASYNC_POSTREAD); 1717 1718 hw = le32toh(sc->shared->next); 1719 while (sc->rxq.cur != hw) { 1720 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 1721 struct wpi_rx_desc *desc; 1722 1723 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1724 BUS_DMASYNC_POSTREAD); 1725 desc = mtod(data->m, struct wpi_rx_desc *); 1726 1727 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1728 "len=%d\n", desc->qid, desc->idx, desc->flags, 1729 desc->type, le32toh(desc->len))); 1730 1731 if (!(desc->qid & 0x80)) /* reply to a command */ 1732 wpi_cmd_intr(sc, desc); 1733 1734 switch (desc->type) { 1735 case WPI_RX_DONE: 1736 /* a 802.11 frame was received */ 1737 wpi_rx_intr(sc, desc, data); 1738 break; 1739 1740 case WPI_TX_DONE: 1741 /* a 802.11 frame has been transmitted */ 1742 wpi_tx_intr(sc, desc); 1743 break; 1744 1745 case WPI_UC_READY: 1746 { 1747 struct wpi_ucode_info *uc = 1748 (struct wpi_ucode_info *)(desc + 1); 1749 1750 /* the microcontroller is ready */ 1751 DPRINTF(("microcode alive notification version %x " 1752 "alive %x\n", le32toh(uc->version), 1753 le32toh(uc->valid))); 1754 1755 if (le32toh(uc->valid) != 1) { 1756 aprint_error_dev(sc->sc_dev, 1757 "microcontroller initialization failed\n"); 1758 } 1759 break; 1760 } 1761 case WPI_STATE_CHANGED: 1762 { 1763 uint32_t *status = (uint32_t *)(desc + 1); 1764 1765 /* enabled/disabled notification */ 1766 DPRINTF(("state changed to %x\n", le32toh(*status))); 1767 1768 if (le32toh(*status) & 1) { 1769 s = splnet(); 1770 /* the radio button has to be pushed */ 1771 /* wake up thread to signal powerd */ 1772 cv_signal(&sc->sc_rsw_cv); 1773 aprint_error_dev(sc->sc_dev, 1774 "Radio transmitter is off\n"); 1775 /* turn the interface down */ 1776 ifp->if_flags &= ~IFF_UP; 1777 wpi_stop(ifp, 1); 1778 splx(s); 1779 return; /* no further processing */ 1780 } 1781 break; 1782 } 1783 case WPI_START_SCAN: 1784 { 1785 #if 0 1786 struct wpi_start_scan *scan = 1787 (struct wpi_start_scan *)(desc + 1); 1788 1789 DPRINTFN(2, ("scanning channel %d status %x\n", 1790 scan->chan, le32toh(scan->status))); 1791 1792 /* fix current channel */ 1793 ic->ic_curchan = &ic->ic_channels[scan->chan]; 1794 #endif 1795 break; 1796 } 1797 case WPI_STOP_SCAN: 1798 { 1799 #ifdef WPI_DEBUG 1800 struct wpi_stop_scan *scan = 1801 (struct wpi_stop_scan *)(desc + 1); 1802 #endif 1803 1804 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1805 scan->nchan, scan->status, scan->chan)); 1806 1807 s = splnet(); 1808 sc->is_scanning = false; 1809 if (ic->ic_state == IEEE80211_S_SCAN) 1810 ieee80211_next_scan(ic); 1811 splx(s); 1812 break; 1813 } 1814 } 1815 1816 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1817 } 1818 1819 /* tell the firmware what we have processed */ 1820 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1821 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1822 } 1823 1824 static int 1825 wpi_intr(void *arg) 1826 { 1827 struct wpi_softc *sc = arg; 1828 uint32_t r; 1829 1830 r = WPI_READ(sc, WPI_INTR); 1831 if (r == 0 || r == 0xffffffff) 1832 return 0; /* not for us */ 1833 1834 DPRINTFN(6, ("interrupt reg %x\n", r)); 1835 1836 /* disable interrupts */ 1837 WPI_WRITE(sc, WPI_MASK, 0); 1838 1839 softint_schedule(sc->sc_soft_ih); 1840 return 1; 1841 } 1842 1843 static void 1844 wpi_softintr(void *arg) 1845 { 1846 struct wpi_softc *sc = arg; 1847 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1848 uint32_t r; 1849 1850 r = WPI_READ(sc, WPI_INTR); 1851 if (r == 0 || r == 0xffffffff) 1852 goto out; 1853 1854 /* ack interrupts */ 1855 WPI_WRITE(sc, WPI_INTR, r); 1856 1857 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1858 /* SYSTEM FAILURE, SYSTEM FAILURE */ 1859 aprint_error_dev(sc->sc_dev, "fatal firmware error\n"); 1860 ifp->if_flags &= ~IFF_UP; 1861 wpi_stop(ifp, 1); 1862 return; 1863 } 1864 1865 if (r & WPI_RX_INTR) 1866 wpi_notif_intr(sc); 1867 1868 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1869 wakeup(sc); 1870 1871 out: 1872 /* re-enable interrupts */ 1873 if (ifp->if_flags & IFF_UP) 1874 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1875 } 1876 1877 static uint8_t 1878 wpi_plcp_signal(int rate) 1879 { 1880 switch (rate) { 1881 /* CCK rates (returned values are device-dependent) */ 1882 case 2: return 10; 1883 case 4: return 20; 1884 case 11: return 55; 1885 case 22: return 110; 1886 1887 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1888 /* R1-R4, (u)ral is R4-R1 */ 1889 case 12: return 0xd; 1890 case 18: return 0xf; 1891 case 24: return 0x5; 1892 case 36: return 0x7; 1893 case 48: return 0x9; 1894 case 72: return 0xb; 1895 case 96: return 0x1; 1896 case 108: return 0x3; 1897 1898 /* unsupported rates (should not get there) */ 1899 default: return 0; 1900 } 1901 } 1902 1903 /* quickly determine if a given rate is CCK or OFDM */ 1904 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1905 1906 static int 1907 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1908 int ac) 1909 { 1910 struct ieee80211com *ic = &sc->sc_ic; 1911 struct wpi_tx_ring *ring = &sc->txq[ac]; 1912 struct wpi_tx_desc *desc; 1913 struct wpi_tx_data *data; 1914 struct wpi_tx_cmd *cmd; 1915 struct wpi_cmd_data *tx; 1916 struct ieee80211_frame *wh; 1917 struct ieee80211_key *k; 1918 const struct chanAccParams *cap; 1919 struct mbuf *mnew; 1920 int i, rate, error, hdrlen, noack = 0; 1921 1922 desc = &ring->desc[ring->cur]; 1923 data = &ring->data[ring->cur]; 1924 1925 wh = mtod(m0, struct ieee80211_frame *); 1926 1927 if (ieee80211_has_qos(wh)) { 1928 cap = &ic->ic_wme.wme_chanParams; 1929 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1930 } 1931 1932 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1933 k = ieee80211_crypto_encap(ic, ni, m0); 1934 if (k == NULL) { 1935 m_freem(m0); 1936 return ENOBUFS; 1937 } 1938 1939 /* packet header may have moved, reset our local pointer */ 1940 wh = mtod(m0, struct ieee80211_frame *); 1941 } 1942 1943 hdrlen = ieee80211_anyhdrsize(wh); 1944 1945 /* pickup a rate */ 1946 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1947 IEEE80211_FC0_TYPE_MGT) { 1948 /* mgmt frames are sent at the lowest available bit-rate */ 1949 rate = ni->ni_rates.rs_rates[0]; 1950 } else { 1951 if (ic->ic_fixed_rate != -1) { 1952 rate = ic->ic_sup_rates[ic->ic_curmode]. 1953 rs_rates[ic->ic_fixed_rate]; 1954 } else 1955 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1956 } 1957 rate &= IEEE80211_RATE_VAL; 1958 1959 if (sc->sc_drvbpf != NULL) { 1960 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1961 1962 tap->wt_flags = 0; 1963 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1964 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1965 tap->wt_rate = rate; 1966 tap->wt_hwqueue = ac; 1967 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1968 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1969 1970 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0, BPF_D_OUT); 1971 } 1972 1973 cmd = &ring->cmd[ring->cur]; 1974 cmd->code = WPI_CMD_TX_DATA; 1975 cmd->flags = 0; 1976 cmd->qid = ring->qid; 1977 cmd->idx = ring->cur; 1978 1979 tx = (struct wpi_cmd_data *)cmd->data; 1980 /* no need to zero tx, all fields are reinitialized here */ 1981 tx->flags = 0; 1982 1983 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1984 tx->flags |= htole32(WPI_TX_NEED_ACK); 1985 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1986 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1987 1988 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1989 1990 /* retrieve destination node's id */ 1991 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1992 WPI_ID_BSS; 1993 1994 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1995 IEEE80211_FC0_TYPE_MGT) { 1996 /* tell h/w to set timestamp in probe responses */ 1997 if ((wh->i_fc[0] & 1998 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1999 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 2000 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 2001 2002 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 2003 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 2004 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 2005 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 2006 tx->timeout = htole16(3); 2007 else 2008 tx->timeout = htole16(2); 2009 } else 2010 tx->timeout = htole16(0); 2011 2012 tx->rate = wpi_plcp_signal(rate); 2013 2014 /* be very persistant at sending frames out */ 2015 tx->rts_ntries = 7; 2016 tx->data_ntries = 15; 2017 2018 tx->ofdm_mask = 0xff; 2019 tx->cck_mask = 0x0f; 2020 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2021 2022 tx->len = htole16(m0->m_pkthdr.len); 2023 2024 /* save and trim IEEE802.11 header */ 2025 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 2026 m_adj(m0, hdrlen); 2027 2028 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2029 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 2030 if (error != 0 && error != EFBIG) { 2031 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 2032 error); 2033 m_freem(m0); 2034 return error; 2035 } 2036 if (error != 0) { 2037 /* too many fragments, linearize */ 2038 2039 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 2040 if (mnew == NULL) { 2041 m_freem(m0); 2042 return ENOMEM; 2043 } 2044 m_copy_pkthdr(mnew, m0); 2045 if (m0->m_pkthdr.len > MHLEN) { 2046 MCLGET(mnew, M_DONTWAIT); 2047 if (!(mnew->m_flags & M_EXT)) { 2048 m_freem(m0); 2049 m_freem(mnew); 2050 return ENOMEM; 2051 } 2052 } 2053 2054 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 2055 m_freem(m0); 2056 mnew->m_len = mnew->m_pkthdr.len; 2057 m0 = mnew; 2058 2059 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2060 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 2061 if (error != 0) { 2062 aprint_error_dev(sc->sc_dev, 2063 "could not map mbuf (error %d)\n", error); 2064 m_freem(m0); 2065 return error; 2066 } 2067 } 2068 2069 data->m = m0; 2070 data->ni = ni; 2071 2072 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 2073 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 2074 2075 /* first scatter/gather segment is used by the tx data command */ 2076 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2077 (1 + data->map->dm_nsegs) << 24); 2078 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2079 ring->cur * sizeof (struct wpi_tx_cmd)); 2080 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 2081 ((hdrlen + 3) & ~3)); 2082 for (i = 1; i <= data->map->dm_nsegs; i++) { 2083 desc->segs[i].addr = 2084 htole32(data->map->dm_segs[i - 1].ds_addr); 2085 desc->segs[i].len = 2086 htole32(data->map->dm_segs[i - 1].ds_len); 2087 } 2088 2089 ring->queued++; 2090 2091 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 2092 data->map->dm_mapsize, 2093 BUS_DMASYNC_PREWRITE); 2094 bus_dmamap_sync(sc->sc_dmat, ring->cmd_dma.map, 0, 2095 ring->cmd_dma.size, 2096 BUS_DMASYNC_PREWRITE); 2097 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2098 ring->desc_dma.size, 2099 BUS_DMASYNC_PREWRITE); 2100 2101 /* kick ring */ 2102 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2103 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2104 2105 return 0; 2106 } 2107 2108 static void 2109 wpi_start(struct ifnet *ifp) 2110 { 2111 struct wpi_softc *sc = ifp->if_softc; 2112 struct ieee80211com *ic = &sc->sc_ic; 2113 struct ieee80211_node *ni; 2114 struct ether_header *eh; 2115 struct mbuf *m0; 2116 int ac; 2117 2118 /* 2119 * net80211 may still try to send management frames even if the 2120 * IFF_RUNNING flag is not set... 2121 */ 2122 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2123 return; 2124 2125 for (;;) { 2126 IF_DEQUEUE(&ic->ic_mgtq, m0); 2127 if (m0 != NULL) { 2128 2129 ni = M_GETCTX(m0, struct ieee80211_node *); 2130 M_CLEARCTX(m0); 2131 2132 /* management frames go into ring 0 */ 2133 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2134 if_statinc(ifp, if_oerrors); 2135 continue; 2136 } 2137 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 2138 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 2139 if_statinc(ifp, if_oerrors); 2140 break; 2141 } 2142 } else { 2143 if (ic->ic_state != IEEE80211_S_RUN) 2144 break; 2145 IFQ_POLL(&ifp->if_snd, m0); 2146 if (m0 == NULL) 2147 break; 2148 2149 if (m0->m_len < sizeof (*eh) && 2150 (m0 = m_pullup(m0, sizeof (*eh))) == NULL) { 2151 if_statinc(ifp, if_oerrors); 2152 continue; 2153 } 2154 eh = mtod(m0, struct ether_header *); 2155 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2156 if (ni == NULL) { 2157 m_freem(m0); 2158 if_statinc(ifp, if_oerrors); 2159 continue; 2160 } 2161 2162 /* classify mbuf so we can find which tx ring to use */ 2163 if (ieee80211_classify(ic, m0, ni) != 0) { 2164 m_freem(m0); 2165 ieee80211_free_node(ni); 2166 if_statinc(ifp, if_oerrors); 2167 continue; 2168 } 2169 2170 /* no QoS encapsulation for EAPOL frames */ 2171 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2172 M_WME_GETAC(m0) : WME_AC_BE; 2173 2174 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2175 /* there is no place left in this ring */ 2176 ifp->if_flags |= IFF_OACTIVE; 2177 break; 2178 } 2179 IFQ_DEQUEUE(&ifp->if_snd, m0); 2180 bpf_mtap(ifp, m0, BPF_D_OUT); 2181 m0 = ieee80211_encap(ic, m0, ni); 2182 if (m0 == NULL) { 2183 ieee80211_free_node(ni); 2184 if_statinc(ifp, if_oerrors); 2185 continue; 2186 } 2187 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 2188 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2189 ieee80211_free_node(ni); 2190 if_statinc(ifp, if_oerrors); 2191 break; 2192 } 2193 } 2194 2195 sc->sc_tx_timer = 5; 2196 ifp->if_timer = 1; 2197 } 2198 } 2199 2200 static void 2201 wpi_watchdog(struct ifnet *ifp) 2202 { 2203 struct wpi_softc *sc = ifp->if_softc; 2204 2205 ifp->if_timer = 0; 2206 2207 if (sc->sc_tx_timer > 0) { 2208 if (--sc->sc_tx_timer == 0) { 2209 aprint_error_dev(sc->sc_dev, "device timeout\n"); 2210 ifp->if_flags &= ~IFF_UP; 2211 wpi_stop(ifp, 1); 2212 if_statinc(ifp, if_oerrors); 2213 return; 2214 } 2215 ifp->if_timer = 1; 2216 } 2217 2218 ieee80211_watchdog(&sc->sc_ic); 2219 } 2220 2221 static int 2222 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2223 { 2224 #define IS_RUNNING(ifp) \ 2225 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2226 2227 struct wpi_softc *sc = ifp->if_softc; 2228 struct ieee80211com *ic = &sc->sc_ic; 2229 int s, error = 0; 2230 2231 s = splnet(); 2232 2233 switch (cmd) { 2234 case SIOCSIFFLAGS: 2235 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 2236 break; 2237 if (ifp->if_flags & IFF_UP) { 2238 if (!(ifp->if_flags & IFF_RUNNING)) 2239 wpi_init(ifp); 2240 } else { 2241 if (ifp->if_flags & IFF_RUNNING) 2242 wpi_stop(ifp, 1); 2243 } 2244 break; 2245 2246 case SIOCADDMULTI: 2247 case SIOCDELMULTI: 2248 /* XXX no h/w multicast filter? --dyoung */ 2249 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2250 /* setup multicast filter, etc */ 2251 error = 0; 2252 } 2253 break; 2254 2255 default: 2256 error = ieee80211_ioctl(ic, cmd, data); 2257 } 2258 2259 if (error == ENETRESET) { 2260 if (IS_RUNNING(ifp) && 2261 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2262 wpi_init(ifp); 2263 error = 0; 2264 } 2265 2266 splx(s); 2267 return error; 2268 2269 #undef IS_RUNNING 2270 } 2271 2272 /* 2273 * Extract various information from EEPROM. 2274 */ 2275 static void 2276 wpi_read_eeprom(struct wpi_softc *sc) 2277 { 2278 struct ieee80211com *ic = &sc->sc_ic; 2279 char domain[4]; 2280 int i; 2281 2282 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2283 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2284 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2285 2286 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2287 sc->type)); 2288 2289 /* read and print regulatory domain */ 2290 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2291 aprint_normal_dev(sc->sc_dev, "%.4s", domain); 2292 2293 /* read and print MAC address */ 2294 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2295 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2296 2297 /* read the list of authorized channels */ 2298 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2299 wpi_read_eeprom_channels(sc, i); 2300 2301 /* read the list of power groups */ 2302 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2303 wpi_read_eeprom_group(sc, i); 2304 } 2305 2306 static void 2307 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2308 { 2309 struct ieee80211com *ic = &sc->sc_ic; 2310 const struct wpi_chan_band *band = &wpi_bands[n]; 2311 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2312 int chan, i; 2313 2314 wpi_read_prom_data(sc, band->addr, channels, 2315 band->nchan * sizeof (struct wpi_eeprom_chan)); 2316 2317 for (i = 0; i < band->nchan; i++) { 2318 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2319 continue; 2320 2321 chan = band->chan[i]; 2322 2323 if (n == 0) { /* 2GHz band */ 2324 ic->ic_channels[chan].ic_freq = 2325 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2326 ic->ic_channels[chan].ic_flags = 2327 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2328 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2329 2330 } else { /* 5GHz band */ 2331 /* 2332 * Some 3945ABG adapters support channels 7, 8, 11 2333 * and 12 in the 2GHz *and* 5GHz bands. 2334 * Because of limitations in our net80211(9) stack, 2335 * we can't support these channels in 5GHz band. 2336 */ 2337 if (chan <= 14) 2338 continue; 2339 2340 ic->ic_channels[chan].ic_freq = 2341 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2342 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2343 } 2344 2345 /* is active scan allowed on this channel? */ 2346 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2347 ic->ic_channels[chan].ic_flags |= 2348 IEEE80211_CHAN_PASSIVE; 2349 } 2350 2351 /* save maximum allowed power for this channel */ 2352 sc->maxpwr[chan] = channels[i].maxpwr; 2353 2354 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2355 chan, channels[i].flags, sc->maxpwr[chan])); 2356 } 2357 } 2358 2359 static void 2360 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2361 { 2362 struct wpi_power_group *group = &sc->groups[n]; 2363 struct wpi_eeprom_group rgroup; 2364 int i; 2365 2366 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2367 sizeof rgroup); 2368 2369 /* save power group information */ 2370 group->chan = rgroup.chan; 2371 group->maxpwr = rgroup.maxpwr; 2372 /* temperature at which the samples were taken */ 2373 group->temp = (int16_t)le16toh(rgroup.temp); 2374 2375 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2376 group->chan, group->maxpwr, group->temp)); 2377 2378 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2379 group->samples[i].index = rgroup.samples[i].index; 2380 group->samples[i].power = rgroup.samples[i].power; 2381 2382 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2383 group->samples[i].index, group->samples[i].power)); 2384 } 2385 } 2386 2387 /* 2388 * Send a command to the firmware. 2389 */ 2390 static int 2391 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2392 { 2393 struct wpi_tx_ring *ring = &sc->cmdq; 2394 struct wpi_tx_desc *desc; 2395 struct wpi_tx_cmd *cmd; 2396 struct wpi_dma_info *dma; 2397 2398 KASSERT(size <= sizeof cmd->data); 2399 2400 desc = &ring->desc[ring->cur]; 2401 cmd = &ring->cmd[ring->cur]; 2402 2403 cmd->code = code; 2404 cmd->flags = 0; 2405 cmd->qid = ring->qid; 2406 cmd->idx = ring->cur; 2407 memcpy(cmd->data, buf, size); 2408 2409 dma = &ring->cmd_dma; 2410 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 2411 2412 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2413 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2414 ring->cur * sizeof (struct wpi_tx_cmd)); 2415 desc->segs[0].len = htole32(4 + size); 2416 2417 dma = &ring->desc_dma; 2418 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 2419 2420 /* kick cmd ring */ 2421 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2422 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2423 2424 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2425 } 2426 2427 static int 2428 wpi_wme_update(struct ieee80211com *ic) 2429 { 2430 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2431 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2432 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2433 const struct wmeParams *wmep; 2434 struct wpi_wme_setup wme; 2435 int ac; 2436 2437 /* don't override default WME values if WME is not actually enabled */ 2438 if (!(ic->ic_flags & IEEE80211_F_WME)) 2439 return 0; 2440 2441 wme.flags = 0; 2442 for (ac = 0; ac < WME_NUM_AC; ac++) { 2443 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2444 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2445 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2446 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2447 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2448 2449 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2450 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2451 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2452 } 2453 2454 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2455 #undef WPI_USEC 2456 #undef WPI_EXP2 2457 } 2458 2459 /* 2460 * Configure h/w multi-rate retries. 2461 */ 2462 static int 2463 wpi_mrr_setup(struct wpi_softc *sc) 2464 { 2465 struct ieee80211com *ic = &sc->sc_ic; 2466 struct wpi_mrr_setup mrr; 2467 int i, error; 2468 2469 /* CCK rates (not used with 802.11a) */ 2470 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2471 mrr.rates[i].flags = 0; 2472 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2473 /* fallback to the immediate lower CCK rate (if any) */ 2474 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2475 /* try one time at this rate before falling back to "next" */ 2476 mrr.rates[i].ntries = 1; 2477 } 2478 2479 /* OFDM rates (not used with 802.11b) */ 2480 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2481 mrr.rates[i].flags = 0; 2482 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2483 /* fallback to the immediate lower rate (if any) */ 2484 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2485 mrr.rates[i].next = (i == WPI_OFDM6) ? 2486 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2487 WPI_OFDM6 : WPI_CCK2) : 2488 i - 1; 2489 /* try one time at this rate before falling back to "next" */ 2490 mrr.rates[i].ntries = 1; 2491 } 2492 2493 /* setup MRR for control frames */ 2494 mrr.which = htole32(WPI_MRR_CTL); 2495 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2496 if (error != 0) { 2497 aprint_error_dev(sc->sc_dev, 2498 "could not setup MRR for control frames\n"); 2499 return error; 2500 } 2501 2502 /* setup MRR for data frames */ 2503 mrr.which = htole32(WPI_MRR_DATA); 2504 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2505 if (error != 0) { 2506 aprint_error_dev(sc->sc_dev, 2507 "could not setup MRR for data frames\n"); 2508 return error; 2509 } 2510 2511 return 0; 2512 } 2513 2514 static void 2515 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2516 { 2517 struct wpi_cmd_led led; 2518 2519 led.which = which; 2520 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2521 led.off = off; 2522 led.on = on; 2523 2524 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2525 } 2526 2527 static void 2528 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2529 { 2530 struct wpi_cmd_tsf tsf; 2531 uint64_t val, mod; 2532 2533 memset(&tsf, 0, sizeof tsf); 2534 memcpy(&tsf.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 2535 tsf.bintval = htole16(ni->ni_intval); 2536 tsf.lintval = htole16(10); 2537 2538 /* compute remaining time until next beacon */ 2539 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2540 mod = le64toh(tsf.tstamp) % val; 2541 tsf.binitval = htole32((uint32_t)(val - mod)); 2542 2543 DPRINTF(("TSF bintval=%u tstamp=%" PRIu64 ", init=%u\n", 2544 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2545 2546 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2547 aprint_error_dev(sc->sc_dev, "could not enable TSF\n"); 2548 } 2549 2550 /* 2551 * Update Tx power to match what is defined for channel `c'. 2552 */ 2553 static int 2554 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2555 { 2556 struct ieee80211com *ic = &sc->sc_ic; 2557 struct wpi_power_group *group; 2558 struct wpi_cmd_txpower txpower; 2559 u_int chan; 2560 int i; 2561 2562 /* get channel number */ 2563 chan = ieee80211_chan2ieee(ic, c); 2564 2565 /* find the power group to which this channel belongs */ 2566 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2567 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2568 if (chan <= group->chan) 2569 break; 2570 } else 2571 group = &sc->groups[0]; 2572 2573 memset(&txpower, 0, sizeof txpower); 2574 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2575 txpower.chan = htole16(chan); 2576 2577 /* set Tx power for all OFDM and CCK rates */ 2578 for (i = 0; i <= 11 ; i++) { 2579 /* retrieve Tx power for this channel/rate combination */ 2580 int idx = wpi_get_power_index(sc, group, c, 2581 wpi_ridx_to_rate[i]); 2582 2583 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2584 2585 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2586 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2587 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2588 } else { 2589 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2590 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2591 } 2592 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2593 wpi_ridx_to_rate[i], idx)); 2594 } 2595 2596 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2597 } 2598 2599 /* 2600 * Determine Tx power index for a given channel/rate combination. 2601 * This takes into account the regulatory information from EEPROM and the 2602 * current temperature. 2603 */ 2604 static int 2605 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2606 struct ieee80211_channel *c, int rate) 2607 { 2608 /* fixed-point arithmetic division using a n-bit fractional part */ 2609 #define fdivround(a, b, n) \ 2610 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2611 2612 /* linear interpolation */ 2613 #define interpolate(x, x1, y1, x2, y2, n) \ 2614 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2615 2616 struct ieee80211com *ic = &sc->sc_ic; 2617 struct wpi_power_sample *sample; 2618 int pwr, idx; 2619 u_int chan; 2620 2621 /* get channel number */ 2622 chan = ieee80211_chan2ieee(ic, c); 2623 2624 /* default power is group's maximum power - 3dB */ 2625 pwr = group->maxpwr / 2; 2626 2627 /* decrease power for highest OFDM rates to reduce distortion */ 2628 switch (rate) { 2629 case 72: /* 36Mb/s */ 2630 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2631 break; 2632 case 96: /* 48Mb/s */ 2633 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2634 break; 2635 case 108: /* 54Mb/s */ 2636 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2637 break; 2638 } 2639 2640 /* never exceed channel's maximum allowed Tx power */ 2641 pwr = uimin(pwr, sc->maxpwr[chan]); 2642 2643 /* retrieve power index into gain tables from samples */ 2644 for (sample = group->samples; sample < &group->samples[3]; sample++) 2645 if (pwr > sample[1].power) 2646 break; 2647 /* fixed-point linear interpolation using a 19-bit fractional part */ 2648 idx = interpolate(pwr, sample[0].power, sample[0].index, 2649 sample[1].power, sample[1].index, 19); 2650 2651 /*- 2652 * Adjust power index based on current temperature: 2653 * - if cooler than factory-calibrated: decrease output power 2654 * - if warmer than factory-calibrated: increase output power 2655 */ 2656 idx -= (sc->temp - group->temp) * 11 / 100; 2657 2658 /* decrease power for CCK rates (-5dB) */ 2659 if (!WPI_RATE_IS_OFDM(rate)) 2660 idx += 10; 2661 2662 /* keep power index in a valid range */ 2663 if (idx < 0) 2664 return 0; 2665 if (idx > WPI_MAX_PWR_INDEX) 2666 return WPI_MAX_PWR_INDEX; 2667 return idx; 2668 2669 #undef interpolate 2670 #undef fdivround 2671 } 2672 2673 /* 2674 * Build a beacon frame that the firmware will broadcast periodically in 2675 * IBSS or HostAP modes. 2676 */ 2677 static int 2678 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2679 { 2680 struct ieee80211com *ic = &sc->sc_ic; 2681 struct wpi_tx_ring *ring = &sc->cmdq; 2682 struct wpi_tx_desc *desc; 2683 struct wpi_tx_data *data; 2684 struct wpi_tx_cmd *cmd; 2685 struct wpi_cmd_beacon *bcn; 2686 struct ieee80211_beacon_offsets bo; 2687 struct mbuf *m0; 2688 int error; 2689 2690 desc = &ring->desc[ring->cur]; 2691 data = &ring->data[ring->cur]; 2692 2693 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2694 if (m0 == NULL) { 2695 aprint_error_dev(sc->sc_dev, 2696 "could not allocate beacon frame\n"); 2697 return ENOMEM; 2698 } 2699 2700 cmd = &ring->cmd[ring->cur]; 2701 cmd->code = WPI_CMD_SET_BEACON; 2702 cmd->flags = 0; 2703 cmd->qid = ring->qid; 2704 cmd->idx = ring->cur; 2705 2706 bcn = (struct wpi_cmd_beacon *)cmd->data; 2707 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2708 bcn->id = WPI_ID_BROADCAST; 2709 bcn->ofdm_mask = 0xff; 2710 bcn->cck_mask = 0x0f; 2711 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2712 bcn->len = htole16(m0->m_pkthdr.len); 2713 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2714 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2715 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2716 2717 /* save and trim IEEE802.11 header */ 2718 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2719 m_adj(m0, sizeof (struct ieee80211_frame)); 2720 2721 /* assume beacon frame is contiguous */ 2722 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2723 BUS_DMA_READ | BUS_DMA_NOWAIT); 2724 if (error != 0) { 2725 aprint_error_dev(sc->sc_dev, "could not map beacon\n"); 2726 m_freem(m0); 2727 return error; 2728 } 2729 2730 data->m = m0; 2731 2732 /* first scatter/gather segment is used by the beacon command */ 2733 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2734 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2735 ring->cur * sizeof (struct wpi_tx_cmd)); 2736 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2737 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2738 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2739 2740 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2741 ring->desc_dma.map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2742 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 2743 BUS_DMASYNC_PREWRITE); 2744 2745 /* kick cmd ring */ 2746 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2747 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2748 2749 return 0; 2750 } 2751 2752 static int 2753 wpi_auth(struct wpi_softc *sc) 2754 { 2755 struct ieee80211com *ic = &sc->sc_ic; 2756 struct ieee80211_node *ni = ic->ic_bss; 2757 struct wpi_node_info node; 2758 int error; 2759 2760 /* update adapter's configuration */ 2761 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2762 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2763 sc->config.flags = htole32(WPI_CONFIG_TSF); 2764 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2765 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2766 WPI_CONFIG_24GHZ); 2767 } 2768 switch (ic->ic_curmode) { 2769 case IEEE80211_MODE_11A: 2770 sc->config.cck_mask = 0; 2771 sc->config.ofdm_mask = 0x15; 2772 break; 2773 case IEEE80211_MODE_11B: 2774 sc->config.cck_mask = 0x03; 2775 sc->config.ofdm_mask = 0; 2776 break; 2777 default: /* assume 802.11b/g */ 2778 sc->config.cck_mask = 0x0f; 2779 sc->config.ofdm_mask = 0x15; 2780 } 2781 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2782 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2783 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2784 sizeof (struct wpi_config), 1); 2785 if (error != 0) { 2786 aprint_error_dev(sc->sc_dev, "could not configure\n"); 2787 return error; 2788 } 2789 2790 /* configuration has changed, set Tx power accordingly */ 2791 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2792 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2793 return error; 2794 } 2795 2796 /* add default node */ 2797 memset(&node, 0, sizeof node); 2798 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2799 node.id = WPI_ID_BSS; 2800 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2801 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2802 node.action = htole32(WPI_ACTION_SET_RATE); 2803 node.antenna = WPI_ANTENNA_BOTH; 2804 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2805 if (error != 0) { 2806 aprint_error_dev(sc->sc_dev, "could not add BSS node\n"); 2807 return error; 2808 } 2809 2810 return 0; 2811 } 2812 2813 /* 2814 * Send a scan request to the firmware. Since this command is huge, we map it 2815 * into a mbuf instead of using the pre-allocated set of commands. 2816 */ 2817 static int 2818 wpi_scan(struct wpi_softc *sc) 2819 { 2820 struct ieee80211com *ic = &sc->sc_ic; 2821 struct wpi_tx_ring *ring = &sc->cmdq; 2822 struct wpi_tx_desc *desc; 2823 struct wpi_tx_data *data; 2824 struct wpi_tx_cmd *cmd; 2825 struct wpi_scan_hdr *hdr; 2826 struct wpi_scan_chan *chan; 2827 struct ieee80211_frame *wh; 2828 struct ieee80211_rateset *rs; 2829 struct ieee80211_channel *c; 2830 uint8_t *frm; 2831 int pktlen, error, nrates; 2832 2833 if (ic->ic_curchan == NULL) 2834 return EIO; 2835 2836 desc = &ring->desc[ring->cur]; 2837 data = &ring->data[ring->cur]; 2838 2839 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2840 if (data->m == NULL) { 2841 aprint_error_dev(sc->sc_dev, 2842 "could not allocate mbuf for scan command\n"); 2843 return ENOMEM; 2844 } 2845 MCLGET(data->m, M_DONTWAIT); 2846 if (!(data->m->m_flags & M_EXT)) { 2847 m_freem(data->m); 2848 data->m = NULL; 2849 aprint_error_dev(sc->sc_dev, 2850 "could not allocate mbuf for scan command\n"); 2851 return ENOMEM; 2852 } 2853 2854 cmd = mtod(data->m, struct wpi_tx_cmd *); 2855 cmd->code = WPI_CMD_SCAN; 2856 cmd->flags = 0; 2857 cmd->qid = ring->qid; 2858 cmd->idx = ring->cur; 2859 2860 hdr = (struct wpi_scan_hdr *)cmd->data; 2861 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2862 hdr->cmd.flags = htole32(WPI_TX_AUTO_SEQ); 2863 hdr->cmd.id = WPI_ID_BROADCAST; 2864 hdr->cmd.lifetime = htole32(WPI_LIFETIME_INFINITE); 2865 /* 2866 * Move to the next channel if no packets are received within 5 msecs 2867 * after sending the probe request (this helps to reduce the duration 2868 * of active scans). 2869 */ 2870 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2871 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2872 2873 if (ic->ic_curchan->ic_flags & IEEE80211_CHAN_5GHZ) { 2874 hdr->crc_threshold = htole16(1); 2875 /* send probe requests at 6Mbps */ 2876 hdr->cmd.rate = wpi_plcp_signal(12); 2877 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 2878 } else { 2879 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2880 /* send probe requests at 1Mbps */ 2881 hdr->cmd.rate = wpi_plcp_signal(2); 2882 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 2883 } 2884 2885 /* for directed scans, firmware inserts the essid IE itself */ 2886 if (ic->ic_des_esslen != 0) { 2887 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2888 hdr->essid[0].len = ic->ic_des_esslen; 2889 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2890 } 2891 2892 /* 2893 * Build a probe request frame. Most of the following code is a 2894 * copy & paste of what is done in net80211. 2895 */ 2896 wh = (struct ieee80211_frame *)(hdr + 1); 2897 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2898 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2899 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2900 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2901 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2902 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2903 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2904 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2905 2906 frm = (uint8_t *)(wh + 1); 2907 2908 /* add empty essid IE (firmware generates it for directed scans) */ 2909 *frm++ = IEEE80211_ELEMID_SSID; 2910 *frm++ = 0; 2911 2912 /* add supported rates IE */ 2913 *frm++ = IEEE80211_ELEMID_RATES; 2914 nrates = rs->rs_nrates; 2915 if (nrates > IEEE80211_RATE_SIZE) 2916 nrates = IEEE80211_RATE_SIZE; 2917 *frm++ = nrates; 2918 memcpy(frm, rs->rs_rates, nrates); 2919 frm += nrates; 2920 2921 /* add supported xrates IE */ 2922 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2923 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2924 *frm++ = IEEE80211_ELEMID_XRATES; 2925 *frm++ = nrates; 2926 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2927 frm += nrates; 2928 } 2929 2930 /* setup length of probe request */ 2931 hdr->cmd.len = htole16(frm - (uint8_t *)wh); 2932 2933 chan = (struct wpi_scan_chan *)frm; 2934 c = ic->ic_curchan; 2935 2936 chan->chan = ieee80211_chan2ieee(ic, c); 2937 chan->flags = 0; 2938 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2939 chan->flags |= WPI_CHAN_ACTIVE; 2940 if (ic->ic_des_esslen != 0) 2941 chan->flags |= WPI_CHAN_DIRECT; 2942 } 2943 chan->dsp_gain = 0x6e; 2944 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2945 chan->rf_gain = 0x3b; 2946 chan->active = htole16(10); 2947 chan->passive = htole16(110); 2948 } else { 2949 chan->rf_gain = 0x28; 2950 chan->active = htole16(20); 2951 chan->passive = htole16(120); 2952 } 2953 hdr->nchan++; 2954 chan++; 2955 2956 frm += sizeof (struct wpi_scan_chan); 2957 2958 hdr->len = htole16(frm - (uint8_t *)hdr); 2959 pktlen = frm - (uint8_t *)cmd; 2960 2961 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, NULL, 2962 BUS_DMA_NOWAIT); 2963 if (error != 0) { 2964 aprint_error_dev(sc->sc_dev, "could not map scan command\n"); 2965 m_freem(data->m); 2966 data->m = NULL; 2967 return error; 2968 } 2969 2970 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2971 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2972 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2973 2974 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2975 ring->desc_dma.map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2976 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 2977 BUS_DMASYNC_PREWRITE); 2978 2979 /* kick cmd ring */ 2980 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2981 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2982 2983 return 0; /* will be notified async. of failure/success */ 2984 } 2985 2986 static int 2987 wpi_config(struct wpi_softc *sc) 2988 { 2989 struct ieee80211com *ic = &sc->sc_ic; 2990 struct ifnet *ifp = ic->ic_ifp; 2991 struct wpi_power power; 2992 struct wpi_bluetooth bluetooth; 2993 struct wpi_node_info node; 2994 int error; 2995 2996 memset(&power, 0, sizeof power); 2997 power.flags = htole32(WPI_POWER_CAM | 0x8); 2998 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2999 if (error != 0) { 3000 aprint_error_dev(sc->sc_dev, "could not set power mode\n"); 3001 return error; 3002 } 3003 3004 /* configure bluetooth coexistence */ 3005 memset(&bluetooth, 0, sizeof bluetooth); 3006 bluetooth.flags = 3; 3007 bluetooth.lead = 0xaa; 3008 bluetooth.kill = 1; 3009 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 3010 0); 3011 if (error != 0) { 3012 aprint_error_dev(sc->sc_dev, 3013 "could not configure bluetooth coexistence\n"); 3014 return error; 3015 } 3016 3017 /* configure adapter */ 3018 memset(&sc->config, 0, sizeof (struct wpi_config)); 3019 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 3020 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 3021 /* set default channel */ 3022 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3023 sc->config.flags = htole32(WPI_CONFIG_TSF); 3024 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 3025 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 3026 WPI_CONFIG_24GHZ); 3027 } 3028 sc->config.filter = 0; 3029 switch (ic->ic_opmode) { 3030 case IEEE80211_M_STA: 3031 sc->config.mode = WPI_MODE_STA; 3032 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 3033 break; 3034 case IEEE80211_M_IBSS: 3035 case IEEE80211_M_AHDEMO: 3036 sc->config.mode = WPI_MODE_IBSS; 3037 break; 3038 case IEEE80211_M_HOSTAP: 3039 sc->config.mode = WPI_MODE_HOSTAP; 3040 break; 3041 case IEEE80211_M_MONITOR: 3042 sc->config.mode = WPI_MODE_MONITOR; 3043 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 3044 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 3045 break; 3046 } 3047 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 3048 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 3049 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 3050 sizeof (struct wpi_config), 0); 3051 if (error != 0) { 3052 aprint_error_dev(sc->sc_dev, "configure command failed\n"); 3053 return error; 3054 } 3055 3056 /* configuration has changed, set Tx power accordingly */ 3057 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 3058 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 3059 return error; 3060 } 3061 3062 /* add broadcast node */ 3063 memset(&node, 0, sizeof node); 3064 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 3065 node.id = WPI_ID_BROADCAST; 3066 node.rate = wpi_plcp_signal(2); 3067 node.action = htole32(WPI_ACTION_SET_RATE); 3068 node.antenna = WPI_ANTENNA_BOTH; 3069 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 3070 if (error != 0) { 3071 aprint_error_dev(sc->sc_dev, "could not add broadcast node\n"); 3072 return error; 3073 } 3074 3075 if ((error = wpi_mrr_setup(sc)) != 0) { 3076 aprint_error_dev(sc->sc_dev, "could not setup MRR\n"); 3077 return error; 3078 } 3079 3080 return 0; 3081 } 3082 3083 static void 3084 wpi_stop_master(struct wpi_softc *sc) 3085 { 3086 uint32_t tmp; 3087 int ntries; 3088 3089 tmp = WPI_READ(sc, WPI_RESET); 3090 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 3091 3092 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3093 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 3094 return; /* already asleep */ 3095 3096 for (ntries = 0; ntries < 100; ntries++) { 3097 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 3098 break; 3099 DELAY(10); 3100 } 3101 if (ntries == 100) { 3102 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 3103 } 3104 } 3105 3106 static int 3107 wpi_power_up(struct wpi_softc *sc) 3108 { 3109 uint32_t tmp; 3110 int ntries; 3111 3112 wpi_mem_lock(sc); 3113 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 3114 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 3115 wpi_mem_unlock(sc); 3116 3117 for (ntries = 0; ntries < 5000; ntries++) { 3118 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 3119 break; 3120 DELAY(10); 3121 } 3122 if (ntries == 5000) { 3123 aprint_error_dev(sc->sc_dev, 3124 "timeout waiting for NIC to power up\n"); 3125 return ETIMEDOUT; 3126 } 3127 return 0; 3128 } 3129 3130 static int 3131 wpi_reset(struct wpi_softc *sc) 3132 { 3133 uint32_t tmp; 3134 int ntries; 3135 3136 /* clear any pending interrupts */ 3137 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3138 3139 tmp = WPI_READ(sc, WPI_PLL_CTL); 3140 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 3141 3142 tmp = WPI_READ(sc, WPI_CHICKEN); 3143 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 3144 3145 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3146 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 3147 3148 /* wait for clock stabilization */ 3149 for (ntries = 0; ntries < 1000; ntries++) { 3150 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 3151 break; 3152 DELAY(10); 3153 } 3154 if (ntries == 1000) { 3155 aprint_error_dev(sc->sc_dev, 3156 "timeout waiting for clock stabilization\n"); 3157 return ETIMEDOUT; 3158 } 3159 3160 /* initialize EEPROM */ 3161 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3162 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3163 aprint_error_dev(sc->sc_dev, "EEPROM not found\n"); 3164 return EIO; 3165 } 3166 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3167 3168 return 0; 3169 } 3170 3171 static void 3172 wpi_hw_config(struct wpi_softc *sc) 3173 { 3174 uint32_t rev, hw; 3175 3176 /* voodoo from the reference driver */ 3177 hw = WPI_READ(sc, WPI_HWCONFIG); 3178 3179 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3180 rev = PCI_REVISION(rev); 3181 if ((rev & 0xc0) == 0x40) 3182 hw |= WPI_HW_ALM_MB; 3183 else if (!(rev & 0x80)) 3184 hw |= WPI_HW_ALM_MM; 3185 3186 if (sc->cap == 0x80) 3187 hw |= WPI_HW_SKU_MRC; 3188 3189 hw &= ~WPI_HW_REV_D; 3190 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3191 hw |= WPI_HW_REV_D; 3192 3193 if (sc->type > 1) 3194 hw |= WPI_HW_TYPE_B; 3195 3196 DPRINTF(("setting h/w config %x\n", hw)); 3197 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3198 } 3199 3200 static int 3201 wpi_init(struct ifnet *ifp) 3202 { 3203 struct wpi_softc *sc = ifp->if_softc; 3204 struct ieee80211com *ic = &sc->sc_ic; 3205 uint32_t tmp; 3206 int qid, ntries, error; 3207 3208 wpi_stop(ifp,1); 3209 (void)wpi_reset(sc); 3210 3211 wpi_mem_lock(sc); 3212 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3213 DELAY(20); 3214 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3215 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3216 wpi_mem_unlock(sc); 3217 3218 (void)wpi_power_up(sc); 3219 wpi_hw_config(sc); 3220 3221 /* init Rx ring */ 3222 wpi_mem_lock(sc); 3223 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3224 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3225 offsetof(struct wpi_shared, next)); 3226 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3227 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3228 wpi_mem_unlock(sc); 3229 3230 /* init Tx rings */ 3231 wpi_mem_lock(sc); 3232 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3233 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3234 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3235 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3236 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3237 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3238 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3239 3240 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3241 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3242 3243 for (qid = 0; qid < 6; qid++) { 3244 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3245 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3246 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3247 } 3248 wpi_mem_unlock(sc); 3249 3250 /* clear "radio off" and "disable command" bits (reversed logic) */ 3251 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3252 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3253 3254 /* clear any pending interrupts */ 3255 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3256 /* enable interrupts */ 3257 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3258 3259 /* not sure why/if this is necessary... */ 3260 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3261 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3262 3263 if ((error = wpi_load_firmware(sc)) != 0) 3264 /* wpi_load_firmware prints error messages for us. */ 3265 goto fail1; 3266 3267 /* Check the status of the radio switch */ 3268 mutex_enter(&sc->sc_rsw_mtx); 3269 if (wpi_getrfkill(sc)) { 3270 mutex_exit(&sc->sc_rsw_mtx); 3271 aprint_error_dev(sc->sc_dev, 3272 "radio is disabled by hardware switch\n"); 3273 ifp->if_flags &= ~IFF_UP; 3274 error = EBUSY; 3275 goto fail1; 3276 } 3277 sc->sc_rsw_suspend = false; 3278 cv_broadcast(&sc->sc_rsw_cv); 3279 while (sc->sc_rsw_suspend) 3280 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 3281 mutex_exit(&sc->sc_rsw_mtx); 3282 3283 /* wait for thermal sensors to calibrate */ 3284 for (ntries = 0; ntries < 1000; ntries++) { 3285 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3286 break; 3287 DELAY(10); 3288 } 3289 if (ntries == 1000) { 3290 aprint_error_dev(sc->sc_dev, 3291 "timeout waiting for thermal sensors calibration\n"); 3292 error = ETIMEDOUT; 3293 goto fail1; 3294 } 3295 DPRINTF(("temperature %d\n", sc->temp)); 3296 3297 if ((error = wpi_config(sc)) != 0) { 3298 aprint_error_dev(sc->sc_dev, "could not configure device\n"); 3299 goto fail1; 3300 } 3301 3302 ifp->if_flags &= ~IFF_OACTIVE; 3303 ifp->if_flags |= IFF_RUNNING; 3304 3305 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3306 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3307 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3308 } 3309 else 3310 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3311 3312 return 0; 3313 3314 fail1: wpi_stop(ifp, 1); 3315 return error; 3316 } 3317 3318 static void 3319 wpi_stop(struct ifnet *ifp, int disable) 3320 { 3321 struct wpi_softc *sc = ifp->if_softc; 3322 struct ieee80211com *ic = &sc->sc_ic; 3323 uint32_t tmp; 3324 int ac; 3325 3326 ifp->if_timer = sc->sc_tx_timer = 0; 3327 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3328 3329 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3330 3331 /* suspend rfkill test thread */ 3332 mutex_enter(&sc->sc_rsw_mtx); 3333 sc->sc_rsw_suspend = true; 3334 cv_broadcast(&sc->sc_rsw_cv); 3335 while (!sc->sc_rsw_suspended) 3336 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 3337 mutex_exit(&sc->sc_rsw_mtx); 3338 3339 /* disable interrupts */ 3340 WPI_WRITE(sc, WPI_MASK, 0); 3341 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3342 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3343 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3344 3345 wpi_mem_lock(sc); 3346 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3347 wpi_mem_unlock(sc); 3348 3349 /* reset all Tx rings */ 3350 for (ac = 0; ac < 4; ac++) 3351 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3352 wpi_reset_tx_ring(sc, &sc->cmdq); 3353 3354 /* reset Rx ring */ 3355 wpi_reset_rx_ring(sc, &sc->rxq); 3356 3357 wpi_mem_lock(sc); 3358 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3359 wpi_mem_unlock(sc); 3360 3361 DELAY(5); 3362 3363 wpi_stop_master(sc); 3364 3365 tmp = WPI_READ(sc, WPI_RESET); 3366 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3367 } 3368 3369 static bool 3370 wpi_resume(device_t dv, const pmf_qual_t *qual) 3371 { 3372 struct wpi_softc *sc = device_private(dv); 3373 3374 (void)wpi_reset(sc); 3375 3376 return true; 3377 } 3378 3379 /* 3380 * Return whether or not the radio is enabled in hardware 3381 * (i.e. the rfkill switch is "off"). 3382 */ 3383 static int 3384 wpi_getrfkill(struct wpi_softc *sc) 3385 { 3386 uint32_t tmp; 3387 3388 wpi_mem_lock(sc); 3389 tmp = wpi_mem_read(sc, WPI_MEM_RFKILL); 3390 wpi_mem_unlock(sc); 3391 3392 KASSERT(mutex_owned(&sc->sc_rsw_mtx)); 3393 if (tmp & 0x01) { 3394 /* switch is on */ 3395 if (sc->sc_rsw_status != WPI_RSW_ON) { 3396 sc->sc_rsw_status = WPI_RSW_ON; 3397 sysmon_pswitch_event(&sc->sc_rsw, 3398 PSWITCH_EVENT_PRESSED); 3399 } 3400 } else { 3401 /* switch is off */ 3402 if (sc->sc_rsw_status != WPI_RSW_OFF) { 3403 sc->sc_rsw_status = WPI_RSW_OFF; 3404 sysmon_pswitch_event(&sc->sc_rsw, 3405 PSWITCH_EVENT_RELEASED); 3406 } 3407 } 3408 3409 return !(tmp & 0x01); 3410 } 3411 3412 static int 3413 wpi_sysctl_radio(SYSCTLFN_ARGS) 3414 { 3415 struct sysctlnode node; 3416 struct wpi_softc *sc; 3417 int val, error; 3418 3419 node = *rnode; 3420 sc = (struct wpi_softc *)node.sysctl_data; 3421 3422 mutex_enter(&sc->sc_rsw_mtx); 3423 val = !wpi_getrfkill(sc); 3424 mutex_exit(&sc->sc_rsw_mtx); 3425 3426 node.sysctl_data = &val; 3427 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 3428 3429 if (error || newp == NULL) 3430 return error; 3431 3432 return 0; 3433 } 3434 3435 static void 3436 wpi_sysctlattach(struct wpi_softc *sc) 3437 { 3438 int rc; 3439 const struct sysctlnode *rnode; 3440 const struct sysctlnode *cnode; 3441 3442 struct sysctllog **clog = &sc->sc_sysctllog; 3443 3444 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 3445 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 3446 SYSCTL_DESCR("wpi controls and statistics"), 3447 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 3448 goto err; 3449 3450 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3451 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 3452 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 3453 wpi_sysctl_radio, 0, (void *)sc, 0, CTL_CREATE, CTL_EOL)) != 0) 3454 goto err; 3455 3456 #ifdef WPI_DEBUG 3457 /* control debugging printfs */ 3458 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3459 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 3460 "debug", SYSCTL_DESCR("Enable debugging output"), 3461 NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 3462 goto err; 3463 #endif 3464 3465 return; 3466 err: 3467 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 3468 } 3469 3470 static void 3471 wpi_rsw_thread(void *arg) 3472 { 3473 struct wpi_softc *sc = (struct wpi_softc *)arg; 3474 3475 mutex_enter(&sc->sc_rsw_mtx); 3476 for (;;) { 3477 cv_timedwait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx, hz); 3478 if (sc->sc_dying) { 3479 sc->sc_rsw_lwp = NULL; 3480 cv_broadcast(&sc->sc_rsw_cv); 3481 mutex_exit(&sc->sc_rsw_mtx); 3482 kthread_exit(0); 3483 } 3484 if (sc->sc_rsw_suspend) { 3485 sc->sc_rsw_suspended = true; 3486 cv_broadcast(&sc->sc_rsw_cv); 3487 while (sc->sc_rsw_suspend || sc->sc_dying) 3488 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 3489 sc->sc_rsw_suspended = false; 3490 cv_broadcast(&sc->sc_rsw_cv); 3491 } 3492 wpi_getrfkill(sc); 3493 } 3494 } 3495
Indexes created Thu Oct 02 01:09:59 GMT 2025