if_wpi.c revision 1.81
1 /* $NetBSD: if_wpi.c,v 1.81 2018/08/20 02:33:17 riastradh 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 1.81 2018/08/20 02:33:17 riastradh 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 if (kthread_create(PRI_NONE, 0, NULL, 233 wpi_rsw_thread, sc, &sc->sc_rsw_lwp, "%s", device_xname(self))) { 234 aprint_error_dev(self, "couldn't create switch thread\n"); 235 } 236 237 callout_init(&sc->calib_to, 0); 238 callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); 239 240 pci_aprint_devinfo(pa, NULL); 241 242 /* enable bus-mastering */ 243 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 244 data |= PCI_COMMAND_MASTER_ENABLE; 245 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 246 247 /* map the register window */ 248 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 249 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 250 if (error != 0) { 251 aprint_error_dev(self, "could not map memory space\n"); 252 return; 253 } 254 255 sc->sc_st = memt; 256 sc->sc_sh = memh; 257 sc->sc_dmat = pa->pa_dmat; 258 259 sc->sc_soft_ih = softint_establish(SOFTINT_NET, wpi_softintr, sc); 260 if (sc->sc_soft_ih == NULL) { 261 aprint_error_dev(self, "could not establish softint\n"); 262 goto unmap; 263 } 264 265 if (pci_intr_alloc(pa, &sc->sc_pihp, NULL, 0)) { 266 aprint_error_dev(self, "could not map interrupt\n"); 267 goto failsi; 268 } 269 270 intrstr = pci_intr_string(sc->sc_pct, sc->sc_pihp[0], intrbuf, 271 sizeof(intrbuf)); 272 sc->sc_ih = pci_intr_establish(sc->sc_pct, sc->sc_pihp[0], IPL_NET, 273 wpi_intr, sc); 274 if (sc->sc_ih == NULL) { 275 aprint_error_dev(self, "could not establish interrupt"); 276 if (intrstr != NULL) 277 aprint_error(" at %s", intrstr); 278 aprint_error("\n"); 279 goto failia; 280 } 281 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 282 283 /* 284 * Put adapter into a known state. 285 */ 286 if ((error = wpi_reset(sc)) != 0) { 287 aprint_error_dev(self, "could not reset adapter\n"); 288 goto failih; 289 } 290 291 /* 292 * Allocate DMA memory for firmware transfers. 293 */ 294 if ((error = wpi_alloc_fwmem(sc)) != 0) { 295 aprint_error_dev(self, "could not allocate firmware memory\n"); 296 goto failih; 297 } 298 299 /* 300 * Allocate shared page and Tx/Rx rings. 301 */ 302 if ((error = wpi_alloc_shared(sc)) != 0) { 303 aprint_error_dev(self, "could not allocate shared area\n"); 304 goto fail1; 305 } 306 307 if ((error = wpi_alloc_rpool(sc)) != 0) { 308 aprint_error_dev(self, "could not allocate Rx buffers\n"); 309 goto fail2; 310 } 311 312 for (ac = 0; ac < 4; ac++) { 313 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, 314 ac); 315 if (error != 0) { 316 aprint_error_dev(self, 317 "could not allocate Tx ring %d\n", ac); 318 goto fail3; 319 } 320 } 321 322 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 323 if (error != 0) { 324 aprint_error_dev(self, "could not allocate command ring\n"); 325 goto fail3; 326 } 327 328 error = wpi_alloc_rx_ring(sc, &sc->rxq); 329 if (error != 0) { 330 aprint_error_dev(self, "could not allocate Rx ring\n"); 331 goto fail4; 332 } 333 334 ic->ic_ifp = ifp; 335 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 336 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 337 ic->ic_state = IEEE80211_S_INIT; 338 339 /* set device capabilities */ 340 ic->ic_caps = 341 IEEE80211_C_WPA | /* 802.11i */ 342 IEEE80211_C_MONITOR | /* monitor mode supported */ 343 IEEE80211_C_TXPMGT | /* tx power management */ 344 IEEE80211_C_SHSLOT | /* short slot time supported */ 345 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 346 IEEE80211_C_WME; /* 802.11e */ 347 348 /* read supported channels and MAC address from EEPROM */ 349 wpi_read_eeprom(sc); 350 351 /* set supported .11a, .11b and .11g rates */ 352 ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_std_rateset_11a; 353 ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; 354 ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; 355 356 /* IBSS channel undefined for now */ 357 ic->ic_ibss_chan = &ic->ic_channels[0]; 358 359 ifp->if_softc = sc; 360 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 361 ifp->if_init = wpi_init; 362 ifp->if_stop = wpi_stop; 363 ifp->if_ioctl = wpi_ioctl; 364 ifp->if_start = wpi_start; 365 ifp->if_watchdog = wpi_watchdog; 366 IFQ_SET_READY(&ifp->if_snd); 367 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 368 369 error = if_initialize(ifp); 370 if (error != 0) { 371 aprint_error_dev(sc->sc_dev, "if_initialize failed(%d)\n", 372 error); 373 goto fail5; 374 } 375 ieee80211_ifattach(ic); 376 /* Use common softint-based if_input */ 377 ifp->if_percpuq = if_percpuq_create(ifp); 378 if_register(ifp); 379 380 /* override default methods */ 381 ic->ic_node_alloc = wpi_node_alloc; 382 ic->ic_newassoc = wpi_newassoc; 383 ic->ic_wme.wme_update = wpi_wme_update; 384 385 /* override state transition machine */ 386 sc->sc_newstate = ic->ic_newstate; 387 ic->ic_newstate = wpi_newstate; 388 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 389 390 sc->amrr.amrr_min_success_threshold = 1; 391 sc->amrr.amrr_max_success_threshold = 15; 392 393 wpi_sysctlattach(sc); 394 395 if (pmf_device_register(self, NULL, wpi_resume)) 396 pmf_class_network_register(self, ifp); 397 else 398 aprint_error_dev(self, "couldn't establish power handler\n"); 399 400 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 401 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 402 &sc->sc_drvbpf); 403 404 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 405 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 406 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 407 408 sc->sc_txtap_len = sizeof sc->sc_txtapu; 409 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 410 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 411 412 ieee80211_announce(ic); 413 414 return; 415 416 /* free allocated memory if something failed during attachment */ 417 fail5: wpi_free_rx_ring(sc, &sc->rxq); 418 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 419 fail3: while (--ac >= 0) 420 wpi_free_tx_ring(sc, &sc->txq[ac]); 421 wpi_free_rpool(sc); 422 fail2: wpi_free_shared(sc); 423 fail1: wpi_free_fwmem(sc); 424 failih: pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 425 sc->sc_ih = NULL; 426 failia: pci_intr_release(sc->sc_pct, sc->sc_pihp, 1); 427 sc->sc_pihp = NULL; 428 failsi: softint_disestablish(sc->sc_soft_ih); 429 sc->sc_soft_ih = NULL; 430 unmap: bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 431 } 432 433 static int 434 wpi_detach(device_t self, int flags __unused) 435 { 436 struct wpi_softc *sc = device_private(self); 437 struct ifnet *ifp = sc->sc_ic.ic_ifp; 438 int ac; 439 440 wpi_stop(ifp, 1); 441 442 if (ifp != NULL) 443 bpf_detach(ifp); 444 ieee80211_ifdetach(&sc->sc_ic); 445 if (ifp != NULL) 446 if_detach(ifp); 447 448 for (ac = 0; ac < 4; ac++) 449 wpi_free_tx_ring(sc, &sc->txq[ac]); 450 wpi_free_tx_ring(sc, &sc->cmdq); 451 wpi_free_rx_ring(sc, &sc->rxq); 452 wpi_free_rpool(sc); 453 wpi_free_shared(sc); 454 455 if (sc->sc_ih != NULL) { 456 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 457 sc->sc_ih = NULL; 458 } 459 if (sc->sc_pihp != NULL) { 460 pci_intr_release(sc->sc_pct, sc->sc_pihp, 1); 461 sc->sc_pihp = NULL; 462 } 463 if (sc->sc_soft_ih != NULL) { 464 softint_disestablish(sc->sc_soft_ih); 465 sc->sc_soft_ih = NULL; 466 } 467 468 mutex_enter(&sc->sc_rsw_mtx); 469 sc->sc_dying = 1; 470 cv_signal(&sc->sc_rsw_cv); 471 while (sc->sc_rsw_lwp != NULL) 472 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 473 mutex_exit(&sc->sc_rsw_mtx); 474 sysmon_pswitch_unregister(&sc->sc_rsw); 475 476 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 477 478 if (sc->fw_used) { 479 sc->fw_used = false; 480 wpi_release_firmware(); 481 } 482 cv_destroy(&sc->sc_rsw_cv); 483 mutex_destroy(&sc->sc_rsw_mtx); 484 return 0; 485 } 486 487 static int 488 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, void **kvap, 489 bus_size_t size, bus_size_t alignment, int flags) 490 { 491 int nsegs, error; 492 493 dma->tag = tag; 494 dma->size = size; 495 496 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 497 if (error != 0) 498 goto fail; 499 500 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 501 flags); 502 if (error != 0) 503 goto fail; 504 505 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 506 if (error != 0) 507 goto fail; 508 509 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 510 if (error != 0) 511 goto fail; 512 513 memset(dma->vaddr, 0, size); 514 bus_dmamap_sync(dma->tag, dma->map, 0, size, BUS_DMASYNC_PREWRITE); 515 516 dma->paddr = dma->map->dm_segs[0].ds_addr; 517 if (kvap != NULL) 518 *kvap = dma->vaddr; 519 520 return 0; 521 522 fail: wpi_dma_contig_free(dma); 523 return error; 524 } 525 526 static void 527 wpi_dma_contig_free(struct wpi_dma_info *dma) 528 { 529 if (dma->map != NULL) { 530 if (dma->vaddr != NULL) { 531 bus_dmamap_unload(dma->tag, dma->map); 532 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 533 bus_dmamem_free(dma->tag, &dma->seg, 1); 534 dma->vaddr = NULL; 535 } 536 bus_dmamap_destroy(dma->tag, dma->map); 537 dma->map = NULL; 538 } 539 } 540 541 /* 542 * Allocate a shared page between host and NIC. 543 */ 544 static int 545 wpi_alloc_shared(struct wpi_softc *sc) 546 { 547 int error; 548 549 /* must be aligned on a 4K-page boundary */ 550 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 551 (void **)&sc->shared, sizeof (struct wpi_shared), WPI_BUF_ALIGN, 552 BUS_DMA_NOWAIT); 553 if (error != 0) 554 aprint_error_dev(sc->sc_dev, 555 "could not allocate shared area DMA memory\n"); 556 557 return error; 558 } 559 560 static void 561 wpi_free_shared(struct wpi_softc *sc) 562 { 563 wpi_dma_contig_free(&sc->shared_dma); 564 } 565 566 /* 567 * Allocate DMA-safe memory for firmware transfer. 568 */ 569 static int 570 wpi_alloc_fwmem(struct wpi_softc *sc) 571 { 572 int error; 573 574 /* allocate enough contiguous space to store text and data */ 575 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 576 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 577 BUS_DMA_NOWAIT); 578 579 if (error != 0) 580 aprint_error_dev(sc->sc_dev, 581 "could not allocate firmware transfer area DMA memory\n"); 582 return error; 583 } 584 585 static void 586 wpi_free_fwmem(struct wpi_softc *sc) 587 { 588 wpi_dma_contig_free(&sc->fw_dma); 589 } 590 591 static struct wpi_rbuf * 592 wpi_alloc_rbuf(struct wpi_softc *sc) 593 { 594 struct wpi_rbuf *rbuf; 595 596 mutex_enter(&sc->rxq.freelist_mtx); 597 rbuf = SLIST_FIRST(&sc->rxq.freelist); 598 if (rbuf != NULL) { 599 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 600 } 601 mutex_exit(&sc->rxq.freelist_mtx); 602 603 return rbuf; 604 } 605 606 /* 607 * This is called automatically by the network stack when the mbuf to which our 608 * Rx buffer is attached is freed. 609 */ 610 static void 611 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 612 { 613 struct wpi_rbuf *rbuf = arg; 614 struct wpi_softc *sc = rbuf->sc; 615 616 /* put the buffer back in the free list */ 617 618 mutex_enter(&sc->rxq.freelist_mtx); 619 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 620 mutex_exit(&sc->rxq.freelist_mtx); 621 622 if (__predict_true(m != NULL)) 623 pool_cache_put(mb_cache, m); 624 } 625 626 static int 627 wpi_alloc_rpool(struct wpi_softc *sc) 628 { 629 struct wpi_rx_ring *ring = &sc->rxq; 630 int i, error; 631 632 /* allocate a big chunk of DMA'able memory.. */ 633 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 634 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 635 if (error != 0) { 636 aprint_normal_dev(sc->sc_dev, 637 "could not allocate Rx buffers DMA memory\n"); 638 return error; 639 } 640 641 /* ..and split it into 3KB chunks */ 642 mutex_init(&ring->freelist_mtx, MUTEX_DEFAULT, IPL_NET); 643 SLIST_INIT(&ring->freelist); 644 for (i = 0; i < WPI_RBUF_COUNT; i++) { 645 struct wpi_rbuf *rbuf = &ring->rbuf[i]; 646 647 rbuf->sc = sc; /* backpointer for callbacks */ 648 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 649 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 650 651 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 652 } 653 654 return 0; 655 } 656 657 static void 658 wpi_free_rpool(struct wpi_softc *sc) 659 { 660 mutex_destroy(&sc->rxq.freelist_mtx); 661 wpi_dma_contig_free(&sc->rxq.buf_dma); 662 } 663 664 static int 665 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 666 { 667 bus_size_t size; 668 int i, error; 669 670 ring->cur = 0; 671 672 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 673 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 674 (void **)&ring->desc, size, 675 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 676 if (error != 0) { 677 aprint_error_dev(sc->sc_dev, 678 "could not allocate rx ring DMA memory\n"); 679 goto fail; 680 } 681 682 /* 683 * Setup Rx buffers. 684 */ 685 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 686 struct wpi_rx_data *data = &ring->data[i]; 687 struct wpi_rbuf *rbuf; 688 689 error = bus_dmamap_create(sc->sc_dmat, WPI_RBUF_SIZE, 1, 690 WPI_RBUF_SIZE, 0, BUS_DMA_NOWAIT, &data->map); 691 if (error) { 692 aprint_error_dev(sc->sc_dev, 693 "could not allocate rx dma map\n"); 694 goto fail; 695 } 696 697 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 698 if (data->m == NULL) { 699 aprint_error_dev(sc->sc_dev, 700 "could not allocate rx mbuf\n"); 701 error = ENOMEM; 702 goto fail; 703 } 704 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 705 m_freem(data->m); 706 data->m = NULL; 707 aprint_error_dev(sc->sc_dev, 708 "could not allocate rx cluster\n"); 709 error = ENOMEM; 710 goto fail; 711 } 712 /* attach Rx buffer to mbuf */ 713 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 714 rbuf); 715 data->m->m_flags |= M_EXT_RW; 716 717 error = bus_dmamap_load(sc->sc_dmat, data->map, 718 mtod(data->m, void *), WPI_RBUF_SIZE, NULL, 719 BUS_DMA_NOWAIT | BUS_DMA_READ); 720 if (error) { 721 aprint_error_dev(sc->sc_dev, 722 "could not load mbuf: %d\n", error); 723 goto fail; 724 } 725 726 ring->desc[i] = htole32(rbuf->paddr); 727 } 728 729 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, size, 730 BUS_DMASYNC_PREWRITE); 731 732 return 0; 733 734 fail: wpi_free_rx_ring(sc, ring); 735 return error; 736 } 737 738 static void 739 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 740 { 741 int ntries; 742 743 wpi_mem_lock(sc); 744 745 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 746 for (ntries = 0; ntries < 100; ntries++) { 747 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 748 break; 749 DELAY(10); 750 } 751 #ifdef WPI_DEBUG 752 if (ntries == 100 && wpi_debug > 0) 753 aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n"); 754 #endif 755 wpi_mem_unlock(sc); 756 757 ring->cur = 0; 758 } 759 760 static void 761 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 762 { 763 int i; 764 765 wpi_dma_contig_free(&ring->desc_dma); 766 767 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 768 if (ring->data[i].m != NULL) { 769 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 770 m_freem(ring->data[i].m); 771 } 772 if (ring->data[i].map != NULL) { 773 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 774 } 775 } 776 } 777 778 static int 779 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 780 int qid) 781 { 782 int i, error; 783 784 ring->qid = qid; 785 ring->count = count; 786 ring->queued = 0; 787 ring->cur = 0; 788 789 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 790 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 791 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 792 if (error != 0) { 793 aprint_error_dev(sc->sc_dev, 794 "could not allocate tx ring DMA memory\n"); 795 goto fail; 796 } 797 798 /* update shared page with ring's base address */ 799 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 800 bus_dmamap_sync(sc->sc_dmat, sc->shared_dma.map, 0, 801 sizeof(struct wpi_shared), BUS_DMASYNC_PREWRITE); 802 803 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 804 (void **)&ring->cmd, count * sizeof (struct wpi_tx_cmd), 4, 805 BUS_DMA_NOWAIT); 806 if (error != 0) { 807 aprint_error_dev(sc->sc_dev, 808 "could not allocate tx cmd DMA memory\n"); 809 goto fail; 810 } 811 812 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 813 M_NOWAIT | M_ZERO); 814 if (ring->data == NULL) { 815 aprint_error_dev(sc->sc_dev, 816 "could not allocate tx data slots\n"); 817 goto fail; 818 } 819 820 for (i = 0; i < count; i++) { 821 struct wpi_tx_data *data = &ring->data[i]; 822 823 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 824 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 825 &data->map); 826 if (error != 0) { 827 aprint_error_dev(sc->sc_dev, 828 "could not create tx buf DMA map\n"); 829 goto fail; 830 } 831 } 832 833 return 0; 834 835 fail: wpi_free_tx_ring(sc, ring); 836 return error; 837 } 838 839 static void 840 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 841 { 842 int i, ntries; 843 844 wpi_mem_lock(sc); 845 846 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 847 for (ntries = 0; ntries < 100; ntries++) { 848 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 849 break; 850 DELAY(10); 851 } 852 #ifdef WPI_DEBUG 853 if (ntries == 100 && wpi_debug > 0) { 854 aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n", 855 ring->qid); 856 } 857 #endif 858 wpi_mem_unlock(sc); 859 860 for (i = 0; i < ring->count; i++) { 861 struct wpi_tx_data *data = &ring->data[i]; 862 863 if (data->m != NULL) { 864 bus_dmamap_unload(sc->sc_dmat, data->map); 865 m_freem(data->m); 866 data->m = NULL; 867 } 868 } 869 870 ring->queued = 0; 871 ring->cur = 0; 872 } 873 874 static void 875 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 876 { 877 int i; 878 879 wpi_dma_contig_free(&ring->desc_dma); 880 wpi_dma_contig_free(&ring->cmd_dma); 881 882 if (ring->data != NULL) { 883 for (i = 0; i < ring->count; i++) { 884 struct wpi_tx_data *data = &ring->data[i]; 885 886 if (data->m != NULL) { 887 bus_dmamap_unload(sc->sc_dmat, data->map); 888 m_freem(data->m); 889 } 890 } 891 free(ring->data, M_DEVBUF); 892 } 893 } 894 895 /*ARGUSED*/ 896 static struct ieee80211_node * 897 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 898 { 899 struct wpi_node *wn; 900 901 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 902 903 return (struct ieee80211_node *)wn; 904 } 905 906 static void 907 wpi_newassoc(struct ieee80211_node *ni, int isnew) 908 { 909 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 910 int i; 911 912 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 913 914 /* set rate to some reasonable initial value */ 915 for (i = ni->ni_rates.rs_nrates - 1; 916 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 917 i--); 918 ni->ni_txrate = i; 919 } 920 921 static int 922 wpi_media_change(struct ifnet *ifp) 923 { 924 int error; 925 926 error = ieee80211_media_change(ifp); 927 if (error != ENETRESET) 928 return error; 929 930 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 931 wpi_init(ifp); 932 933 return 0; 934 } 935 936 static int 937 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 938 { 939 struct ifnet *ifp = ic->ic_ifp; 940 struct wpi_softc *sc = ifp->if_softc; 941 struct ieee80211_node *ni; 942 enum ieee80211_state ostate = ic->ic_state; 943 int error; 944 945 callout_stop(&sc->calib_to); 946 947 switch (nstate) { 948 case IEEE80211_S_SCAN: 949 950 if (sc->is_scanning) 951 break; 952 953 sc->is_scanning = true; 954 955 if (ostate != IEEE80211_S_SCAN) { 956 /* make the link LED blink while we're scanning */ 957 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 958 } 959 960 if ((error = wpi_scan(sc)) != 0) { 961 aprint_error_dev(sc->sc_dev, 962 "could not initiate scan\n"); 963 return error; 964 } 965 break; 966 967 case IEEE80211_S_ASSOC: 968 if (ic->ic_state != IEEE80211_S_RUN) 969 break; 970 /* FALLTHROUGH */ 971 case IEEE80211_S_AUTH: 972 /* reset state to handle reassociations correctly */ 973 sc->config.associd = 0; 974 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 975 976 if ((error = wpi_auth(sc)) != 0) { 977 aprint_error_dev(sc->sc_dev, 978 "could not send authentication request\n"); 979 return error; 980 } 981 break; 982 983 case IEEE80211_S_RUN: 984 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 985 /* link LED blinks while monitoring */ 986 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 987 break; 988 } 989 ni = ic->ic_bss; 990 991 if (ic->ic_opmode != IEEE80211_M_STA) { 992 (void) wpi_auth(sc); /* XXX */ 993 wpi_setup_beacon(sc, ni); 994 } 995 996 wpi_enable_tsf(sc, ni); 997 998 /* update adapter's configuration */ 999 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 1000 /* short preamble/slot time are negotiated when associating */ 1001 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 1002 WPI_CONFIG_SHSLOT); 1003 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1004 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 1005 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1006 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 1007 sc->config.filter |= htole32(WPI_FILTER_BSS); 1008 if (ic->ic_opmode != IEEE80211_M_STA) 1009 sc->config.filter |= htole32(WPI_FILTER_BEACON); 1010 1011 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 1012 1013 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 1014 sc->config.flags)); 1015 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 1016 sizeof (struct wpi_config), 1); 1017 if (error != 0) { 1018 aprint_error_dev(sc->sc_dev, 1019 "could not update configuration\n"); 1020 return error; 1021 } 1022 1023 /* configuration has changed, set Tx power accordingly */ 1024 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 1)) != 0) { 1025 aprint_error_dev(sc->sc_dev, 1026 "could not set Tx power\n"); 1027 return error; 1028 } 1029 1030 if (ic->ic_opmode == IEEE80211_M_STA) { 1031 /* fake a join to init the tx rate */ 1032 wpi_newassoc(ni, 1); 1033 } 1034 1035 /* start periodic calibration timer */ 1036 sc->calib_cnt = 0; 1037 callout_schedule(&sc->calib_to, hz/2); 1038 1039 /* link LED always on while associated */ 1040 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 1041 break; 1042 1043 case IEEE80211_S_INIT: 1044 sc->is_scanning = false; 1045 break; 1046 } 1047 1048 return sc->sc_newstate(ic, nstate, arg); 1049 } 1050 1051 /* 1052 * Grab exclusive access to NIC memory. 1053 */ 1054 static void 1055 wpi_mem_lock(struct wpi_softc *sc) 1056 { 1057 uint32_t tmp; 1058 int ntries; 1059 1060 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1061 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1062 1063 /* spin until we actually get the lock */ 1064 for (ntries = 0; ntries < 1000; ntries++) { 1065 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1066 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1067 break; 1068 DELAY(10); 1069 } 1070 if (ntries == 1000) 1071 aprint_error_dev(sc->sc_dev, "could not lock memory\n"); 1072 } 1073 1074 /* 1075 * Release lock on NIC memory. 1076 */ 1077 static void 1078 wpi_mem_unlock(struct wpi_softc *sc) 1079 { 1080 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1081 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1082 } 1083 1084 static uint32_t 1085 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1086 { 1087 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1088 return WPI_READ(sc, WPI_READ_MEM_DATA); 1089 } 1090 1091 static void 1092 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1093 { 1094 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1095 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1096 } 1097 1098 static void 1099 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1100 const uint32_t *data, int wlen) 1101 { 1102 for (; wlen > 0; wlen--, data++, addr += 4) 1103 wpi_mem_write(sc, addr, *data); 1104 } 1105 1106 /* 1107 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1108 * instead of using the traditional bit-bang method. 1109 */ 1110 static int 1111 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1112 { 1113 uint8_t *out = data; 1114 uint32_t val; 1115 int ntries; 1116 1117 wpi_mem_lock(sc); 1118 for (; len > 0; len -= 2, addr++) { 1119 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1120 1121 for (ntries = 0; ntries < 10; ntries++) { 1122 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1123 WPI_EEPROM_READY) 1124 break; 1125 DELAY(5); 1126 } 1127 if (ntries == 10) { 1128 aprint_error_dev(sc->sc_dev, "could not read EEPROM\n"); 1129 return ETIMEDOUT; 1130 } 1131 *out++ = val >> 16; 1132 if (len > 1) 1133 *out++ = val >> 24; 1134 } 1135 wpi_mem_unlock(sc); 1136 1137 return 0; 1138 } 1139 1140 /* 1141 * The firmware boot code is small and is intended to be copied directly into 1142 * the NIC internal memory. 1143 */ 1144 int 1145 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1146 { 1147 int ntries; 1148 1149 size /= sizeof (uint32_t); 1150 1151 wpi_mem_lock(sc); 1152 1153 /* copy microcode image into NIC memory */ 1154 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1155 (const uint32_t *)ucode, size); 1156 1157 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1158 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1159 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1160 1161 /* run microcode */ 1162 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1163 1164 /* wait for transfer to complete */ 1165 for (ntries = 0; ntries < 1000; ntries++) { 1166 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1167 break; 1168 DELAY(10); 1169 } 1170 if (ntries == 1000) { 1171 wpi_mem_unlock(sc); 1172 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1173 return ETIMEDOUT; 1174 } 1175 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1176 1177 wpi_mem_unlock(sc); 1178 1179 return 0; 1180 } 1181 1182 static int 1183 wpi_cache_firmware(struct wpi_softc *sc) 1184 { 1185 const char *const fwname = wpi_firmware_name; 1186 firmware_handle_t fw; 1187 int error; 1188 1189 /* sc is used here only to report error messages. */ 1190 1191 mutex_enter(&wpi_firmware_mutex); 1192 1193 if (wpi_firmware_users == SIZE_MAX) { 1194 mutex_exit(&wpi_firmware_mutex); 1195 return ENFILE; /* Too many of something in the system... */ 1196 } 1197 if (wpi_firmware_users++) { 1198 KASSERT(wpi_firmware_image != NULL); 1199 KASSERT(wpi_firmware_size > 0); 1200 mutex_exit(&wpi_firmware_mutex); 1201 return 0; /* Already good to go. */ 1202 } 1203 1204 KASSERT(wpi_firmware_image == NULL); 1205 KASSERT(wpi_firmware_size == 0); 1206 1207 /* load firmware image from disk */ 1208 if ((error = firmware_open("if_wpi", fwname, &fw)) != 0) { 1209 aprint_error_dev(sc->sc_dev, 1210 "could not open firmware file %s: %d\n", fwname, error); 1211 goto fail0; 1212 } 1213 1214 wpi_firmware_size = firmware_get_size(fw); 1215 1216 if (wpi_firmware_size > sizeof (struct wpi_firmware_hdr) + 1217 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ + 1218 WPI_FW_INIT_TEXT_MAXSZ + WPI_FW_INIT_DATA_MAXSZ + 1219 WPI_FW_BOOT_TEXT_MAXSZ) { 1220 aprint_error_dev(sc->sc_dev, 1221 "firmware file %s too large: %zu bytes\n", 1222 fwname, wpi_firmware_size); 1223 error = EFBIG; 1224 goto fail1; 1225 } 1226 1227 if (wpi_firmware_size < sizeof (struct wpi_firmware_hdr)) { 1228 aprint_error_dev(sc->sc_dev, 1229 "firmware file %s too small: %zu bytes\n", 1230 fwname, wpi_firmware_size); 1231 error = EINVAL; 1232 goto fail1; 1233 } 1234 1235 wpi_firmware_image = firmware_malloc(wpi_firmware_size); 1236 if (wpi_firmware_image == NULL) { 1237 aprint_error_dev(sc->sc_dev, 1238 "not enough memory for firmware file %s\n", fwname); 1239 error = ENOMEM; 1240 goto fail1; 1241 } 1242 1243 error = firmware_read(fw, 0, wpi_firmware_image, wpi_firmware_size); 1244 if (error != 0) { 1245 aprint_error_dev(sc->sc_dev, 1246 "error reading firmware file %s: %d\n", fwname, error); 1247 goto fail2; 1248 } 1249 1250 /* Success! */ 1251 firmware_close(fw); 1252 mutex_exit(&wpi_firmware_mutex); 1253 return 0; 1254 1255 fail2: 1256 firmware_free(wpi_firmware_image, wpi_firmware_size); 1257 wpi_firmware_image = NULL; 1258 fail1: 1259 wpi_firmware_size = 0; 1260 firmware_close(fw); 1261 fail0: 1262 KASSERT(wpi_firmware_users == 1); 1263 wpi_firmware_users = 0; 1264 KASSERT(wpi_firmware_image == NULL); 1265 KASSERT(wpi_firmware_size == 0); 1266 1267 mutex_exit(&wpi_firmware_mutex); 1268 return error; 1269 } 1270 1271 static void 1272 wpi_release_firmware(void) 1273 { 1274 1275 mutex_enter(&wpi_firmware_mutex); 1276 1277 KASSERT(wpi_firmware_users > 0); 1278 KASSERT(wpi_firmware_image != NULL); 1279 KASSERT(wpi_firmware_size != 0); 1280 1281 if (--wpi_firmware_users == 0) { 1282 firmware_free(wpi_firmware_image, wpi_firmware_size); 1283 wpi_firmware_image = NULL; 1284 wpi_firmware_size = 0; 1285 } 1286 1287 mutex_exit(&wpi_firmware_mutex); 1288 } 1289 1290 static int 1291 wpi_load_firmware(struct wpi_softc *sc) 1292 { 1293 struct wpi_dma_info *dma = &sc->fw_dma; 1294 struct wpi_firmware_hdr hdr; 1295 const uint8_t *init_text, *init_data, *main_text, *main_data; 1296 const uint8_t *boot_text; 1297 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1298 uint32_t boot_textsz; 1299 size_t size; 1300 int error; 1301 1302 if (!sc->fw_used) { 1303 if ((error = wpi_cache_firmware(sc)) != 0) 1304 return error; 1305 sc->fw_used = true; 1306 } 1307 1308 KASSERT(sc->fw_used); 1309 KASSERT(wpi_firmware_image != NULL); 1310 KASSERT(wpi_firmware_size > sizeof(hdr)); 1311 1312 memcpy(&hdr, wpi_firmware_image, sizeof(hdr)); 1313 1314 main_textsz = le32toh(hdr.main_textsz); 1315 main_datasz = le32toh(hdr.main_datasz); 1316 init_textsz = le32toh(hdr.init_textsz); 1317 init_datasz = le32toh(hdr.init_datasz); 1318 boot_textsz = le32toh(hdr.boot_textsz); 1319 1320 /* sanity-check firmware segments sizes */ 1321 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1322 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1323 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1324 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1325 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1326 (boot_textsz & 3) != 0) { 1327 aprint_error_dev(sc->sc_dev, "invalid firmware header\n"); 1328 error = EINVAL; 1329 goto free_firmware; 1330 } 1331 1332 /* check that all firmware segments are present */ 1333 size = sizeof (struct wpi_firmware_hdr) + main_textsz + 1334 main_datasz + init_textsz + init_datasz + boot_textsz; 1335 if (wpi_firmware_size < size) { 1336 aprint_error_dev(sc->sc_dev, 1337 "firmware file truncated: %zu bytes, expected %zu bytes\n", 1338 wpi_firmware_size, size); 1339 error = EINVAL; 1340 goto free_firmware; 1341 } 1342 1343 /* get pointers to firmware segments */ 1344 main_text = wpi_firmware_image + sizeof (struct wpi_firmware_hdr); 1345 main_data = main_text + main_textsz; 1346 init_text = main_data + main_datasz; 1347 init_data = init_text + init_textsz; 1348 boot_text = init_data + init_datasz; 1349 1350 /* copy initialization images into pre-allocated DMA-safe memory */ 1351 memcpy(dma->vaddr, init_data, init_datasz); 1352 memcpy((char *)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, 1353 init_textsz); 1354 1355 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 1356 1357 /* tell adapter where to find initialization images */ 1358 wpi_mem_lock(sc); 1359 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1360 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1361 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1362 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1363 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1364 wpi_mem_unlock(sc); 1365 1366 /* load firmware boot code */ 1367 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1368 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1369 return error; 1370 } 1371 1372 /* now press "execute" ;-) */ 1373 WPI_WRITE(sc, WPI_RESET, 0); 1374 1375 /* wait at most one second for first alive notification */ 1376 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1377 /* this isn't what was supposed to happen.. */ 1378 aprint_error_dev(sc->sc_dev, 1379 "timeout waiting for adapter to initialize\n"); 1380 } 1381 1382 /* copy runtime images into pre-allocated DMA-safe memory */ 1383 memcpy(dma->vaddr, main_data, main_datasz); 1384 memcpy((char *)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, 1385 main_textsz); 1386 1387 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 1388 1389 /* tell adapter where to find runtime images */ 1390 wpi_mem_lock(sc); 1391 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1392 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1393 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1394 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1395 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1396 wpi_mem_unlock(sc); 1397 1398 /* wait at most one second for second alive notification */ 1399 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1400 /* this isn't what was supposed to happen.. */ 1401 aprint_error_dev(sc->sc_dev, 1402 "timeout waiting for adapter to initialize\n"); 1403 } 1404 1405 return error; 1406 1407 free_firmware: 1408 sc->fw_used = false; 1409 wpi_release_firmware(); 1410 return error; 1411 } 1412 1413 static void 1414 wpi_calib_timeout(void *arg) 1415 { 1416 struct wpi_softc *sc = arg; 1417 struct ieee80211com *ic = &sc->sc_ic; 1418 int temp, s; 1419 1420 /* automatic rate control triggered every 500ms */ 1421 if (ic->ic_fixed_rate == -1) { 1422 s = splnet(); 1423 if (ic->ic_opmode == IEEE80211_M_STA) 1424 wpi_iter_func(sc, ic->ic_bss); 1425 else 1426 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1427 splx(s); 1428 } 1429 1430 /* update sensor data */ 1431 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1432 1433 /* automatic power calibration every 60s */ 1434 if (++sc->calib_cnt >= 120) { 1435 wpi_power_calibration(sc, temp); 1436 sc->calib_cnt = 0; 1437 } 1438 1439 callout_schedule(&sc->calib_to, hz/2); 1440 } 1441 1442 static void 1443 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1444 { 1445 struct wpi_softc *sc = arg; 1446 struct wpi_node *wn = (struct wpi_node *)ni; 1447 1448 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1449 } 1450 1451 /* 1452 * This function is called periodically (every 60 seconds) to adjust output 1453 * power to temperature changes. 1454 */ 1455 void 1456 wpi_power_calibration(struct wpi_softc *sc, int temp) 1457 { 1458 /* sanity-check read value */ 1459 if (temp < -260 || temp > 25) { 1460 /* this can't be correct, ignore */ 1461 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1462 return; 1463 } 1464 1465 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1466 1467 /* adjust Tx power if need be */ 1468 if (abs(temp - sc->temp) <= 6) 1469 return; 1470 1471 sc->temp = temp; 1472 1473 if (wpi_set_txpower(sc, sc->sc_ic.ic_curchan, 1) != 0) { 1474 /* just warn, too bad for the automatic calibration... */ 1475 aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n"); 1476 } 1477 } 1478 1479 static void 1480 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1481 struct wpi_rx_data *data) 1482 { 1483 struct ieee80211com *ic = &sc->sc_ic; 1484 struct ifnet *ifp = ic->ic_ifp; 1485 struct wpi_rx_ring *ring = &sc->rxq; 1486 struct wpi_rx_stat *stat; 1487 struct wpi_rx_head *head; 1488 struct wpi_rx_tail *tail; 1489 struct wpi_rbuf *rbuf; 1490 struct ieee80211_frame *wh; 1491 struct ieee80211_node *ni; 1492 struct mbuf *m, *mnew; 1493 int data_off, error, s; 1494 1495 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1496 BUS_DMASYNC_POSTREAD); 1497 stat = (struct wpi_rx_stat *)(desc + 1); 1498 1499 if (stat->len > WPI_STAT_MAXLEN) { 1500 aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n"); 1501 ifp->if_ierrors++; 1502 return; 1503 } 1504 1505 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1506 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1507 1508 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1509 "chan=%d tstamp=%" PRIu64 "\n", ring->cur, le32toh(desc->len), 1510 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1511 le64toh(tail->tstamp))); 1512 1513 /* 1514 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1515 * to radiotap in monitor mode). 1516 */ 1517 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1518 DPRINTF(("rx tail flags error %x\n", 1519 le32toh(tail->flags))); 1520 ifp->if_ierrors++; 1521 return; 1522 } 1523 1524 /* Compute where are the useful datas */ 1525 data_off = (char*)(head + 1) - mtod(data->m, char*); 1526 1527 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1528 if (mnew == NULL) { 1529 ifp->if_ierrors++; 1530 return; 1531 } 1532 1533 rbuf = wpi_alloc_rbuf(sc); 1534 if (rbuf == NULL) { 1535 m_freem(mnew); 1536 ifp->if_ierrors++; 1537 return; 1538 } 1539 1540 /* attach Rx buffer to mbuf */ 1541 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1542 rbuf); 1543 mnew->m_flags |= M_EXT_RW; 1544 1545 bus_dmamap_unload(sc->sc_dmat, data->map); 1546 1547 error = bus_dmamap_load(sc->sc_dmat, data->map, 1548 mtod(mnew, void *), WPI_RBUF_SIZE, NULL, 1549 BUS_DMA_NOWAIT | BUS_DMA_READ); 1550 if (error) { 1551 device_printf(sc->sc_dev, 1552 "couldn't load rx mbuf: %d\n", error); 1553 m_freem(mnew); 1554 ifp->if_ierrors++; 1555 1556 error = bus_dmamap_load(sc->sc_dmat, data->map, 1557 mtod(data->m, void *), WPI_RBUF_SIZE, NULL, 1558 BUS_DMA_NOWAIT | BUS_DMA_READ); 1559 if (error) 1560 panic("%s: bus_dmamap_load failed: %d\n", 1561 device_xname(sc->sc_dev), error); 1562 return; 1563 } 1564 1565 /* new mbuf loaded successfully */ 1566 m = data->m; 1567 data->m = mnew; 1568 1569 /* update Rx descriptor */ 1570 ring->desc[ring->cur] = htole32(rbuf->paddr); 1571 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 1572 ring->desc_dma.size, 1573 BUS_DMASYNC_PREWRITE); 1574 1575 m->m_data = (char*)m->m_data + data_off; 1576 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1577 1578 /* finalize mbuf */ 1579 m_set_rcvif(m, ifp); 1580 1581 s = splnet(); 1582 1583 if (sc->sc_drvbpf != NULL) { 1584 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1585 1586 tap->wr_flags = 0; 1587 tap->wr_chan_freq = 1588 htole16(ic->ic_channels[head->chan].ic_freq); 1589 tap->wr_chan_flags = 1590 htole16(ic->ic_channels[head->chan].ic_flags); 1591 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1592 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1593 tap->wr_tsft = tail->tstamp; 1594 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1595 switch (head->rate) { 1596 /* CCK rates */ 1597 case 10: tap->wr_rate = 2; break; 1598 case 20: tap->wr_rate = 4; break; 1599 case 55: tap->wr_rate = 11; break; 1600 case 110: tap->wr_rate = 22; break; 1601 /* OFDM rates */ 1602 case 0xd: tap->wr_rate = 12; break; 1603 case 0xf: tap->wr_rate = 18; break; 1604 case 0x5: tap->wr_rate = 24; break; 1605 case 0x7: tap->wr_rate = 36; break; 1606 case 0x9: tap->wr_rate = 48; break; 1607 case 0xb: tap->wr_rate = 72; break; 1608 case 0x1: tap->wr_rate = 96; break; 1609 case 0x3: tap->wr_rate = 108; break; 1610 /* unknown rate: should not happen */ 1611 default: tap->wr_rate = 0; 1612 } 1613 if (le16toh(head->flags) & 0x4) 1614 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1615 1616 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m, BPF_D_IN); 1617 } 1618 1619 /* grab a reference to the source node */ 1620 wh = mtod(m, struct ieee80211_frame *); 1621 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1622 1623 /* send the frame to the 802.11 layer */ 1624 ieee80211_input(ic, m, ni, stat->rssi, 0); 1625 1626 /* release node reference */ 1627 ieee80211_free_node(ni); 1628 1629 splx(s); 1630 } 1631 1632 static void 1633 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1634 { 1635 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1636 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1637 struct wpi_tx_data *data = &ring->data[desc->idx]; 1638 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1639 struct wpi_node *wn = (struct wpi_node *)data->ni; 1640 int s; 1641 1642 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1643 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1644 stat->nkill, stat->rate, le32toh(stat->duration), 1645 le32toh(stat->status))); 1646 1647 s = splnet(); 1648 1649 /* 1650 * Update rate control statistics for the node. 1651 * XXX we should not count mgmt frames since they're always sent at 1652 * the lowest available bit-rate. 1653 */ 1654 wn->amn.amn_txcnt++; 1655 if (stat->ntries > 0) { 1656 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1657 wn->amn.amn_retrycnt++; 1658 } 1659 1660 if ((le32toh(stat->status) & 0xff) != 1) 1661 ifp->if_oerrors++; 1662 else 1663 ifp->if_opackets++; 1664 1665 bus_dmamap_unload(sc->sc_dmat, data->map); 1666 m_freem(data->m); 1667 data->m = NULL; 1668 ieee80211_free_node(data->ni); 1669 data->ni = NULL; 1670 1671 ring->queued--; 1672 1673 sc->sc_tx_timer = 0; 1674 ifp->if_flags &= ~IFF_OACTIVE; 1675 wpi_start(ifp); /* in softint */ 1676 1677 splx(s); 1678 } 1679 1680 static void 1681 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1682 { 1683 struct wpi_tx_ring *ring = &sc->cmdq; 1684 struct wpi_tx_data *data; 1685 1686 if ((desc->qid & 7) != 4) 1687 return; /* not a command ack */ 1688 1689 data = &ring->data[desc->idx]; 1690 1691 /* if the command was mapped in a mbuf, free it */ 1692 if (data->m != NULL) { 1693 bus_dmamap_unload(sc->sc_dmat, data->map); 1694 m_freem(data->m); 1695 data->m = NULL; 1696 } 1697 1698 wakeup(&ring->cmd[desc->idx]); 1699 } 1700 1701 static void 1702 wpi_notif_intr(struct wpi_softc *sc) 1703 { 1704 struct ieee80211com *ic = &sc->sc_ic; 1705 struct ifnet *ifp = ic->ic_ifp; 1706 uint32_t hw; 1707 int s; 1708 1709 bus_dmamap_sync(sc->sc_dmat, sc->shared_dma.map, 0, 1710 sizeof(struct wpi_shared), BUS_DMASYNC_POSTREAD); 1711 1712 hw = le32toh(sc->shared->next); 1713 while (sc->rxq.cur != hw) { 1714 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 1715 struct wpi_rx_desc *desc; 1716 1717 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1718 BUS_DMASYNC_POSTREAD); 1719 desc = mtod(data->m, struct wpi_rx_desc *); 1720 1721 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1722 "len=%d\n", desc->qid, desc->idx, desc->flags, 1723 desc->type, le32toh(desc->len))); 1724 1725 if (!(desc->qid & 0x80)) /* reply to a command */ 1726 wpi_cmd_intr(sc, desc); 1727 1728 switch (desc->type) { 1729 case WPI_RX_DONE: 1730 /* a 802.11 frame was received */ 1731 wpi_rx_intr(sc, desc, data); 1732 break; 1733 1734 case WPI_TX_DONE: 1735 /* a 802.11 frame has been transmitted */ 1736 wpi_tx_intr(sc, desc); 1737 break; 1738 1739 case WPI_UC_READY: 1740 { 1741 struct wpi_ucode_info *uc = 1742 (struct wpi_ucode_info *)(desc + 1); 1743 1744 /* the microcontroller is ready */ 1745 DPRINTF(("microcode alive notification version %x " 1746 "alive %x\n", le32toh(uc->version), 1747 le32toh(uc->valid))); 1748 1749 if (le32toh(uc->valid) != 1) { 1750 aprint_error_dev(sc->sc_dev, 1751 "microcontroller initialization failed\n"); 1752 } 1753 break; 1754 } 1755 case WPI_STATE_CHANGED: 1756 { 1757 uint32_t *status = (uint32_t *)(desc + 1); 1758 1759 /* enabled/disabled notification */ 1760 DPRINTF(("state changed to %x\n", le32toh(*status))); 1761 1762 if (le32toh(*status) & 1) { 1763 s = splnet(); 1764 /* the radio button has to be pushed */ 1765 /* wake up thread to signal powerd */ 1766 cv_signal(&sc->sc_rsw_cv); 1767 aprint_error_dev(sc->sc_dev, 1768 "Radio transmitter is off\n"); 1769 /* turn the interface down */ 1770 ifp->if_flags &= ~IFF_UP; 1771 wpi_stop(ifp, 1); 1772 splx(s); 1773 return; /* no further processing */ 1774 } 1775 break; 1776 } 1777 case WPI_START_SCAN: 1778 { 1779 #if 0 1780 struct wpi_start_scan *scan = 1781 (struct wpi_start_scan *)(desc + 1); 1782 1783 DPRINTFN(2, ("scanning channel %d status %x\n", 1784 scan->chan, le32toh(scan->status))); 1785 1786 /* fix current channel */ 1787 ic->ic_curchan = &ic->ic_channels[scan->chan]; 1788 #endif 1789 break; 1790 } 1791 case WPI_STOP_SCAN: 1792 { 1793 #ifdef WPI_DEBUG 1794 struct wpi_stop_scan *scan = 1795 (struct wpi_stop_scan *)(desc + 1); 1796 #endif 1797 1798 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1799 scan->nchan, scan->status, scan->chan)); 1800 1801 s = splnet(); 1802 sc->is_scanning = false; 1803 if (ic->ic_state == IEEE80211_S_SCAN) 1804 ieee80211_next_scan(ic); 1805 splx(s); 1806 break; 1807 } 1808 } 1809 1810 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1811 } 1812 1813 /* tell the firmware what we have processed */ 1814 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1815 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1816 } 1817 1818 static int 1819 wpi_intr(void *arg) 1820 { 1821 struct wpi_softc *sc = arg; 1822 uint32_t r; 1823 1824 r = WPI_READ(sc, WPI_INTR); 1825 if (r == 0 || r == 0xffffffff) 1826 return 0; /* not for us */ 1827 1828 DPRINTFN(6, ("interrupt reg %x\n", r)); 1829 1830 /* disable interrupts */ 1831 WPI_WRITE(sc, WPI_MASK, 0); 1832 1833 softint_schedule(sc->sc_soft_ih); 1834 return 1; 1835 } 1836 1837 static void 1838 wpi_softintr(void *arg) 1839 { 1840 struct wpi_softc *sc = arg; 1841 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1842 uint32_t r; 1843 1844 r = WPI_READ(sc, WPI_INTR); 1845 if (r == 0 || r == 0xffffffff) 1846 goto out; 1847 1848 /* ack interrupts */ 1849 WPI_WRITE(sc, WPI_INTR, r); 1850 1851 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1852 /* SYSTEM FAILURE, SYSTEM FAILURE */ 1853 aprint_error_dev(sc->sc_dev, "fatal firmware error\n"); 1854 ifp->if_flags &= ~IFF_UP; 1855 wpi_stop(ifp, 1); 1856 return; 1857 } 1858 1859 if (r & WPI_RX_INTR) 1860 wpi_notif_intr(sc); 1861 1862 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1863 wakeup(sc); 1864 1865 out: 1866 /* re-enable interrupts */ 1867 if (ifp->if_flags & IFF_UP) 1868 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1869 } 1870 1871 static uint8_t 1872 wpi_plcp_signal(int rate) 1873 { 1874 switch (rate) { 1875 /* CCK rates (returned values are device-dependent) */ 1876 case 2: return 10; 1877 case 4: return 20; 1878 case 11: return 55; 1879 case 22: return 110; 1880 1881 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1882 /* R1-R4, (u)ral is R4-R1 */ 1883 case 12: return 0xd; 1884 case 18: return 0xf; 1885 case 24: return 0x5; 1886 case 36: return 0x7; 1887 case 48: return 0x9; 1888 case 72: return 0xb; 1889 case 96: return 0x1; 1890 case 108: return 0x3; 1891 1892 /* unsupported rates (should not get there) */ 1893 default: return 0; 1894 } 1895 } 1896 1897 /* quickly determine if a given rate is CCK or OFDM */ 1898 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1899 1900 static int 1901 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1902 int ac) 1903 { 1904 struct ieee80211com *ic = &sc->sc_ic; 1905 struct wpi_tx_ring *ring = &sc->txq[ac]; 1906 struct wpi_tx_desc *desc; 1907 struct wpi_tx_data *data; 1908 struct wpi_tx_cmd *cmd; 1909 struct wpi_cmd_data *tx; 1910 struct ieee80211_frame *wh; 1911 struct ieee80211_key *k; 1912 const struct chanAccParams *cap; 1913 struct mbuf *mnew; 1914 int i, rate, error, hdrlen, noack = 0; 1915 1916 desc = &ring->desc[ring->cur]; 1917 data = &ring->data[ring->cur]; 1918 1919 wh = mtod(m0, struct ieee80211_frame *); 1920 1921 if (ieee80211_has_qos(wh)) { 1922 cap = &ic->ic_wme.wme_chanParams; 1923 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1924 } 1925 1926 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1927 k = ieee80211_crypto_encap(ic, ni, m0); 1928 if (k == NULL) { 1929 m_freem(m0); 1930 return ENOBUFS; 1931 } 1932 1933 /* packet header may have moved, reset our local pointer */ 1934 wh = mtod(m0, struct ieee80211_frame *); 1935 } 1936 1937 hdrlen = ieee80211_anyhdrsize(wh); 1938 1939 /* pickup a rate */ 1940 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1941 IEEE80211_FC0_TYPE_MGT) { 1942 /* mgmt frames are sent at the lowest available bit-rate */ 1943 rate = ni->ni_rates.rs_rates[0]; 1944 } else { 1945 if (ic->ic_fixed_rate != -1) { 1946 rate = ic->ic_sup_rates[ic->ic_curmode]. 1947 rs_rates[ic->ic_fixed_rate]; 1948 } else 1949 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1950 } 1951 rate &= IEEE80211_RATE_VAL; 1952 1953 if (sc->sc_drvbpf != NULL) { 1954 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1955 1956 tap->wt_flags = 0; 1957 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1958 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1959 tap->wt_rate = rate; 1960 tap->wt_hwqueue = ac; 1961 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1962 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1963 1964 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0, BPF_D_OUT); 1965 } 1966 1967 cmd = &ring->cmd[ring->cur]; 1968 cmd->code = WPI_CMD_TX_DATA; 1969 cmd->flags = 0; 1970 cmd->qid = ring->qid; 1971 cmd->idx = ring->cur; 1972 1973 tx = (struct wpi_cmd_data *)cmd->data; 1974 /* no need to zero tx, all fields are reinitialized here */ 1975 tx->flags = 0; 1976 1977 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1978 tx->flags |= htole32(WPI_TX_NEED_ACK); 1979 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1980 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1981 1982 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1983 1984 /* retrieve destination node's id */ 1985 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1986 WPI_ID_BSS; 1987 1988 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1989 IEEE80211_FC0_TYPE_MGT) { 1990 /* tell h/w to set timestamp in probe responses */ 1991 if ((wh->i_fc[0] & 1992 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1993 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1994 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1995 1996 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1997 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1998 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1999 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 2000 tx->timeout = htole16(3); 2001 else 2002 tx->timeout = htole16(2); 2003 } else 2004 tx->timeout = htole16(0); 2005 2006 tx->rate = wpi_plcp_signal(rate); 2007 2008 /* be very persistant at sending frames out */ 2009 tx->rts_ntries = 7; 2010 tx->data_ntries = 15; 2011 2012 tx->ofdm_mask = 0xff; 2013 tx->cck_mask = 0x0f; 2014 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2015 2016 tx->len = htole16(m0->m_pkthdr.len); 2017 2018 /* save and trim IEEE802.11 header */ 2019 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 2020 m_adj(m0, hdrlen); 2021 2022 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2023 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 2024 if (error != 0 && error != EFBIG) { 2025 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 2026 error); 2027 m_freem(m0); 2028 return error; 2029 } 2030 if (error != 0) { 2031 /* too many fragments, linearize */ 2032 2033 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 2034 if (mnew == NULL) { 2035 m_freem(m0); 2036 return ENOMEM; 2037 } 2038 M_COPY_PKTHDR(mnew, m0); 2039 if (m0->m_pkthdr.len > MHLEN) { 2040 MCLGET(mnew, M_DONTWAIT); 2041 if (!(mnew->m_flags & M_EXT)) { 2042 m_freem(m0); 2043 m_freem(mnew); 2044 return ENOMEM; 2045 } 2046 } 2047 2048 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 2049 m_freem(m0); 2050 mnew->m_len = mnew->m_pkthdr.len; 2051 m0 = mnew; 2052 2053 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2054 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 2055 if (error != 0) { 2056 aprint_error_dev(sc->sc_dev, 2057 "could not map mbuf (error %d)\n", error); 2058 m_freem(m0); 2059 return error; 2060 } 2061 } 2062 2063 data->m = m0; 2064 data->ni = ni; 2065 2066 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 2067 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 2068 2069 /* first scatter/gather segment is used by the tx data command */ 2070 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2071 (1 + data->map->dm_nsegs) << 24); 2072 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2073 ring->cur * sizeof (struct wpi_tx_cmd)); 2074 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 2075 ((hdrlen + 3) & ~3)); 2076 for (i = 1; i <= data->map->dm_nsegs; i++) { 2077 desc->segs[i].addr = 2078 htole32(data->map->dm_segs[i - 1].ds_addr); 2079 desc->segs[i].len = 2080 htole32(data->map->dm_segs[i - 1].ds_len); 2081 } 2082 2083 ring->queued++; 2084 2085 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 2086 data->map->dm_mapsize, 2087 BUS_DMASYNC_PREWRITE); 2088 bus_dmamap_sync(sc->sc_dmat, ring->cmd_dma.map, 0, 2089 ring->cmd_dma.size, 2090 BUS_DMASYNC_PREWRITE); 2091 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2092 ring->desc_dma.size, 2093 BUS_DMASYNC_PREWRITE); 2094 2095 /* kick ring */ 2096 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2097 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2098 2099 return 0; 2100 } 2101 2102 static void 2103 wpi_start(struct ifnet *ifp) 2104 { 2105 struct wpi_softc *sc = ifp->if_softc; 2106 struct ieee80211com *ic = &sc->sc_ic; 2107 struct ieee80211_node *ni; 2108 struct ether_header *eh; 2109 struct mbuf *m0; 2110 int ac; 2111 2112 /* 2113 * net80211 may still try to send management frames even if the 2114 * IFF_RUNNING flag is not set... 2115 */ 2116 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2117 return; 2118 2119 for (;;) { 2120 IF_DEQUEUE(&ic->ic_mgtq, m0); 2121 if (m0 != NULL) { 2122 2123 ni = M_GETCTX(m0, struct ieee80211_node *); 2124 M_CLEARCTX(m0); 2125 2126 /* management frames go into ring 0 */ 2127 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2128 ifp->if_oerrors++; 2129 continue; 2130 } 2131 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 2132 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 2133 ifp->if_oerrors++; 2134 break; 2135 } 2136 } else { 2137 if (ic->ic_state != IEEE80211_S_RUN) 2138 break; 2139 IFQ_POLL(&ifp->if_snd, m0); 2140 if (m0 == NULL) 2141 break; 2142 2143 if (m0->m_len < sizeof (*eh) && 2144 (m0 = m_pullup(m0, sizeof (*eh))) == NULL) { 2145 ifp->if_oerrors++; 2146 continue; 2147 } 2148 eh = mtod(m0, struct ether_header *); 2149 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2150 if (ni == NULL) { 2151 m_freem(m0); 2152 ifp->if_oerrors++; 2153 continue; 2154 } 2155 2156 /* classify mbuf so we can find which tx ring to use */ 2157 if (ieee80211_classify(ic, m0, ni) != 0) { 2158 m_freem(m0); 2159 ieee80211_free_node(ni); 2160 ifp->if_oerrors++; 2161 continue; 2162 } 2163 2164 /* no QoS encapsulation for EAPOL frames */ 2165 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2166 M_WME_GETAC(m0) : WME_AC_BE; 2167 2168 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2169 /* there is no place left in this ring */ 2170 ifp->if_flags |= IFF_OACTIVE; 2171 break; 2172 } 2173 IFQ_DEQUEUE(&ifp->if_snd, m0); 2174 bpf_mtap(ifp, m0, BPF_D_OUT); 2175 m0 = ieee80211_encap(ic, m0, ni); 2176 if (m0 == NULL) { 2177 ieee80211_free_node(ni); 2178 ifp->if_oerrors++; 2179 continue; 2180 } 2181 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 2182 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2183 ieee80211_free_node(ni); 2184 ifp->if_oerrors++; 2185 break; 2186 } 2187 } 2188 2189 sc->sc_tx_timer = 5; 2190 ifp->if_timer = 1; 2191 } 2192 } 2193 2194 static void 2195 wpi_watchdog(struct ifnet *ifp) 2196 { 2197 struct wpi_softc *sc = ifp->if_softc; 2198 2199 ifp->if_timer = 0; 2200 2201 if (sc->sc_tx_timer > 0) { 2202 if (--sc->sc_tx_timer == 0) { 2203 aprint_error_dev(sc->sc_dev, "device timeout\n"); 2204 ifp->if_flags &= ~IFF_UP; 2205 wpi_stop(ifp, 1); 2206 ifp->if_oerrors++; 2207 return; 2208 } 2209 ifp->if_timer = 1; 2210 } 2211 2212 ieee80211_watchdog(&sc->sc_ic); 2213 } 2214 2215 static int 2216 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2217 { 2218 #define IS_RUNNING(ifp) \ 2219 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2220 2221 struct wpi_softc *sc = ifp->if_softc; 2222 struct ieee80211com *ic = &sc->sc_ic; 2223 int s, error = 0; 2224 2225 s = splnet(); 2226 2227 switch (cmd) { 2228 case SIOCSIFFLAGS: 2229 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 2230 break; 2231 if (ifp->if_flags & IFF_UP) { 2232 if (!(ifp->if_flags & IFF_RUNNING)) 2233 wpi_init(ifp); 2234 } else { 2235 if (ifp->if_flags & IFF_RUNNING) 2236 wpi_stop(ifp, 1); 2237 } 2238 break; 2239 2240 case SIOCADDMULTI: 2241 case SIOCDELMULTI: 2242 /* XXX no h/w multicast filter? --dyoung */ 2243 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2244 /* setup multicast filter, etc */ 2245 error = 0; 2246 } 2247 break; 2248 2249 default: 2250 error = ieee80211_ioctl(ic, cmd, data); 2251 } 2252 2253 if (error == ENETRESET) { 2254 if (IS_RUNNING(ifp) && 2255 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2256 wpi_init(ifp); 2257 error = 0; 2258 } 2259 2260 splx(s); 2261 return error; 2262 2263 #undef IS_RUNNING 2264 } 2265 2266 /* 2267 * Extract various information from EEPROM. 2268 */ 2269 static void 2270 wpi_read_eeprom(struct wpi_softc *sc) 2271 { 2272 struct ieee80211com *ic = &sc->sc_ic; 2273 char domain[4]; 2274 int i; 2275 2276 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2277 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2278 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2279 2280 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2281 sc->type)); 2282 2283 /* read and print regulatory domain */ 2284 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2285 aprint_normal_dev(sc->sc_dev, "%.4s", domain); 2286 2287 /* read and print MAC address */ 2288 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2289 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2290 2291 /* read the list of authorized channels */ 2292 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2293 wpi_read_eeprom_channels(sc, i); 2294 2295 /* read the list of power groups */ 2296 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2297 wpi_read_eeprom_group(sc, i); 2298 } 2299 2300 static void 2301 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2302 { 2303 struct ieee80211com *ic = &sc->sc_ic; 2304 const struct wpi_chan_band *band = &wpi_bands[n]; 2305 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2306 int chan, i; 2307 2308 wpi_read_prom_data(sc, band->addr, channels, 2309 band->nchan * sizeof (struct wpi_eeprom_chan)); 2310 2311 for (i = 0; i < band->nchan; i++) { 2312 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2313 continue; 2314 2315 chan = band->chan[i]; 2316 2317 if (n == 0) { /* 2GHz band */ 2318 ic->ic_channels[chan].ic_freq = 2319 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2320 ic->ic_channels[chan].ic_flags = 2321 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2322 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2323 2324 } else { /* 5GHz band */ 2325 /* 2326 * Some 3945ABG adapters support channels 7, 8, 11 2327 * and 12 in the 2GHz *and* 5GHz bands. 2328 * Because of limitations in our net80211(9) stack, 2329 * we can't support these channels in 5GHz band. 2330 */ 2331 if (chan <= 14) 2332 continue; 2333 2334 ic->ic_channels[chan].ic_freq = 2335 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2336 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2337 } 2338 2339 /* is active scan allowed on this channel? */ 2340 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2341 ic->ic_channels[chan].ic_flags |= 2342 IEEE80211_CHAN_PASSIVE; 2343 } 2344 2345 /* save maximum allowed power for this channel */ 2346 sc->maxpwr[chan] = channels[i].maxpwr; 2347 2348 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2349 chan, channels[i].flags, sc->maxpwr[chan])); 2350 } 2351 } 2352 2353 static void 2354 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2355 { 2356 struct wpi_power_group *group = &sc->groups[n]; 2357 struct wpi_eeprom_group rgroup; 2358 int i; 2359 2360 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2361 sizeof rgroup); 2362 2363 /* save power group information */ 2364 group->chan = rgroup.chan; 2365 group->maxpwr = rgroup.maxpwr; 2366 /* temperature at which the samples were taken */ 2367 group->temp = (int16_t)le16toh(rgroup.temp); 2368 2369 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2370 group->chan, group->maxpwr, group->temp)); 2371 2372 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2373 group->samples[i].index = rgroup.samples[i].index; 2374 group->samples[i].power = rgroup.samples[i].power; 2375 2376 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2377 group->samples[i].index, group->samples[i].power)); 2378 } 2379 } 2380 2381 /* 2382 * Send a command to the firmware. 2383 */ 2384 static int 2385 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2386 { 2387 struct wpi_tx_ring *ring = &sc->cmdq; 2388 struct wpi_tx_desc *desc; 2389 struct wpi_tx_cmd *cmd; 2390 struct wpi_dma_info *dma; 2391 2392 KASSERT(size <= sizeof cmd->data); 2393 2394 desc = &ring->desc[ring->cur]; 2395 cmd = &ring->cmd[ring->cur]; 2396 2397 cmd->code = code; 2398 cmd->flags = 0; 2399 cmd->qid = ring->qid; 2400 cmd->idx = ring->cur; 2401 memcpy(cmd->data, buf, size); 2402 2403 dma = &ring->cmd_dma; 2404 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 2405 2406 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2407 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2408 ring->cur * sizeof (struct wpi_tx_cmd)); 2409 desc->segs[0].len = htole32(4 + size); 2410 2411 dma = &ring->desc_dma; 2412 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 2413 2414 /* kick cmd ring */ 2415 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2416 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2417 2418 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2419 } 2420 2421 static int 2422 wpi_wme_update(struct ieee80211com *ic) 2423 { 2424 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2425 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2426 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2427 const struct wmeParams *wmep; 2428 struct wpi_wme_setup wme; 2429 int ac; 2430 2431 /* don't override default WME values if WME is not actually enabled */ 2432 if (!(ic->ic_flags & IEEE80211_F_WME)) 2433 return 0; 2434 2435 wme.flags = 0; 2436 for (ac = 0; ac < WME_NUM_AC; ac++) { 2437 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2438 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2439 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2440 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2441 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2442 2443 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2444 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2445 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2446 } 2447 2448 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2449 #undef WPI_USEC 2450 #undef WPI_EXP2 2451 } 2452 2453 /* 2454 * Configure h/w multi-rate retries. 2455 */ 2456 static int 2457 wpi_mrr_setup(struct wpi_softc *sc) 2458 { 2459 struct ieee80211com *ic = &sc->sc_ic; 2460 struct wpi_mrr_setup mrr; 2461 int i, error; 2462 2463 /* CCK rates (not used with 802.11a) */ 2464 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2465 mrr.rates[i].flags = 0; 2466 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2467 /* fallback to the immediate lower CCK rate (if any) */ 2468 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2469 /* try one time at this rate before falling back to "next" */ 2470 mrr.rates[i].ntries = 1; 2471 } 2472 2473 /* OFDM rates (not used with 802.11b) */ 2474 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2475 mrr.rates[i].flags = 0; 2476 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2477 /* fallback to the immediate lower rate (if any) */ 2478 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2479 mrr.rates[i].next = (i == WPI_OFDM6) ? 2480 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2481 WPI_OFDM6 : WPI_CCK2) : 2482 i - 1; 2483 /* try one time at this rate before falling back to "next" */ 2484 mrr.rates[i].ntries = 1; 2485 } 2486 2487 /* setup MRR for control frames */ 2488 mrr.which = htole32(WPI_MRR_CTL); 2489 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2490 if (error != 0) { 2491 aprint_error_dev(sc->sc_dev, 2492 "could not setup MRR for control frames\n"); 2493 return error; 2494 } 2495 2496 /* setup MRR for data frames */ 2497 mrr.which = htole32(WPI_MRR_DATA); 2498 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2499 if (error != 0) { 2500 aprint_error_dev(sc->sc_dev, 2501 "could not setup MRR for data frames\n"); 2502 return error; 2503 } 2504 2505 return 0; 2506 } 2507 2508 static void 2509 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2510 { 2511 struct wpi_cmd_led led; 2512 2513 led.which = which; 2514 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2515 led.off = off; 2516 led.on = on; 2517 2518 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2519 } 2520 2521 static void 2522 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2523 { 2524 struct wpi_cmd_tsf tsf; 2525 uint64_t val, mod; 2526 2527 memset(&tsf, 0, sizeof tsf); 2528 memcpy(&tsf.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 2529 tsf.bintval = htole16(ni->ni_intval); 2530 tsf.lintval = htole16(10); 2531 2532 /* compute remaining time until next beacon */ 2533 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2534 mod = le64toh(tsf.tstamp) % val; 2535 tsf.binitval = htole32((uint32_t)(val - mod)); 2536 2537 DPRINTF(("TSF bintval=%u tstamp=%" PRIu64 ", init=%u\n", 2538 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2539 2540 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2541 aprint_error_dev(sc->sc_dev, "could not enable TSF\n"); 2542 } 2543 2544 /* 2545 * Update Tx power to match what is defined for channel `c'. 2546 */ 2547 static int 2548 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2549 { 2550 struct ieee80211com *ic = &sc->sc_ic; 2551 struct wpi_power_group *group; 2552 struct wpi_cmd_txpower txpower; 2553 u_int chan; 2554 int i; 2555 2556 /* get channel number */ 2557 chan = ieee80211_chan2ieee(ic, c); 2558 2559 /* find the power group to which this channel belongs */ 2560 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2561 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2562 if (chan <= group->chan) 2563 break; 2564 } else 2565 group = &sc->groups[0]; 2566 2567 memset(&txpower, 0, sizeof txpower); 2568 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2569 txpower.chan = htole16(chan); 2570 2571 /* set Tx power for all OFDM and CCK rates */ 2572 for (i = 0; i <= 11 ; i++) { 2573 /* retrieve Tx power for this channel/rate combination */ 2574 int idx = wpi_get_power_index(sc, group, c, 2575 wpi_ridx_to_rate[i]); 2576 2577 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2578 2579 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2580 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2581 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2582 } else { 2583 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2584 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2585 } 2586 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2587 wpi_ridx_to_rate[i], idx)); 2588 } 2589 2590 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2591 } 2592 2593 /* 2594 * Determine Tx power index for a given channel/rate combination. 2595 * This takes into account the regulatory information from EEPROM and the 2596 * current temperature. 2597 */ 2598 static int 2599 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2600 struct ieee80211_channel *c, int rate) 2601 { 2602 /* fixed-point arithmetic division using a n-bit fractional part */ 2603 #define fdivround(a, b, n) \ 2604 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2605 2606 /* linear interpolation */ 2607 #define interpolate(x, x1, y1, x2, y2, n) \ 2608 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2609 2610 struct ieee80211com *ic = &sc->sc_ic; 2611 struct wpi_power_sample *sample; 2612 int pwr, idx; 2613 u_int chan; 2614 2615 /* get channel number */ 2616 chan = ieee80211_chan2ieee(ic, c); 2617 2618 /* default power is group's maximum power - 3dB */ 2619 pwr = group->maxpwr / 2; 2620 2621 /* decrease power for highest OFDM rates to reduce distortion */ 2622 switch (rate) { 2623 case 72: /* 36Mb/s */ 2624 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2625 break; 2626 case 96: /* 48Mb/s */ 2627 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2628 break; 2629 case 108: /* 54Mb/s */ 2630 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2631 break; 2632 } 2633 2634 /* never exceed channel's maximum allowed Tx power */ 2635 pwr = min(pwr, sc->maxpwr[chan]); 2636 2637 /* retrieve power index into gain tables from samples */ 2638 for (sample = group->samples; sample < &group->samples[3]; sample++) 2639 if (pwr > sample[1].power) 2640 break; 2641 /* fixed-point linear interpolation using a 19-bit fractional part */ 2642 idx = interpolate(pwr, sample[0].power, sample[0].index, 2643 sample[1].power, sample[1].index, 19); 2644 2645 /*- 2646 * Adjust power index based on current temperature: 2647 * - if cooler than factory-calibrated: decrease output power 2648 * - if warmer than factory-calibrated: increase output power 2649 */ 2650 idx -= (sc->temp - group->temp) * 11 / 100; 2651 2652 /* decrease power for CCK rates (-5dB) */ 2653 if (!WPI_RATE_IS_OFDM(rate)) 2654 idx += 10; 2655 2656 /* keep power index in a valid range */ 2657 if (idx < 0) 2658 return 0; 2659 if (idx > WPI_MAX_PWR_INDEX) 2660 return WPI_MAX_PWR_INDEX; 2661 return idx; 2662 2663 #undef interpolate 2664 #undef fdivround 2665 } 2666 2667 /* 2668 * Build a beacon frame that the firmware will broadcast periodically in 2669 * IBSS or HostAP modes. 2670 */ 2671 static int 2672 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2673 { 2674 struct ieee80211com *ic = &sc->sc_ic; 2675 struct wpi_tx_ring *ring = &sc->cmdq; 2676 struct wpi_tx_desc *desc; 2677 struct wpi_tx_data *data; 2678 struct wpi_tx_cmd *cmd; 2679 struct wpi_cmd_beacon *bcn; 2680 struct ieee80211_beacon_offsets bo; 2681 struct mbuf *m0; 2682 int error; 2683 2684 desc = &ring->desc[ring->cur]; 2685 data = &ring->data[ring->cur]; 2686 2687 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2688 if (m0 == NULL) { 2689 aprint_error_dev(sc->sc_dev, 2690 "could not allocate beacon frame\n"); 2691 return ENOMEM; 2692 } 2693 2694 cmd = &ring->cmd[ring->cur]; 2695 cmd->code = WPI_CMD_SET_BEACON; 2696 cmd->flags = 0; 2697 cmd->qid = ring->qid; 2698 cmd->idx = ring->cur; 2699 2700 bcn = (struct wpi_cmd_beacon *)cmd->data; 2701 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2702 bcn->id = WPI_ID_BROADCAST; 2703 bcn->ofdm_mask = 0xff; 2704 bcn->cck_mask = 0x0f; 2705 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2706 bcn->len = htole16(m0->m_pkthdr.len); 2707 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2708 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2709 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2710 2711 /* save and trim IEEE802.11 header */ 2712 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2713 m_adj(m0, sizeof (struct ieee80211_frame)); 2714 2715 /* assume beacon frame is contiguous */ 2716 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2717 BUS_DMA_READ | BUS_DMA_NOWAIT); 2718 if (error != 0) { 2719 aprint_error_dev(sc->sc_dev, "could not map beacon\n"); 2720 m_freem(m0); 2721 return error; 2722 } 2723 2724 data->m = m0; 2725 2726 /* first scatter/gather segment is used by the beacon command */ 2727 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2728 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2729 ring->cur * sizeof (struct wpi_tx_cmd)); 2730 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2731 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2732 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2733 2734 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2735 ring->desc_dma.map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2736 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 2737 BUS_DMASYNC_PREWRITE); 2738 2739 /* kick cmd ring */ 2740 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2741 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2742 2743 return 0; 2744 } 2745 2746 static int 2747 wpi_auth(struct wpi_softc *sc) 2748 { 2749 struct ieee80211com *ic = &sc->sc_ic; 2750 struct ieee80211_node *ni = ic->ic_bss; 2751 struct wpi_node_info node; 2752 int error; 2753 2754 /* update adapter's configuration */ 2755 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2756 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2757 sc->config.flags = htole32(WPI_CONFIG_TSF); 2758 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2759 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2760 WPI_CONFIG_24GHZ); 2761 } 2762 switch (ic->ic_curmode) { 2763 case IEEE80211_MODE_11A: 2764 sc->config.cck_mask = 0; 2765 sc->config.ofdm_mask = 0x15; 2766 break; 2767 case IEEE80211_MODE_11B: 2768 sc->config.cck_mask = 0x03; 2769 sc->config.ofdm_mask = 0; 2770 break; 2771 default: /* assume 802.11b/g */ 2772 sc->config.cck_mask = 0x0f; 2773 sc->config.ofdm_mask = 0x15; 2774 } 2775 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2776 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2777 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2778 sizeof (struct wpi_config), 1); 2779 if (error != 0) { 2780 aprint_error_dev(sc->sc_dev, "could not configure\n"); 2781 return error; 2782 } 2783 2784 /* configuration has changed, set Tx power accordingly */ 2785 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2786 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2787 return error; 2788 } 2789 2790 /* add default node */ 2791 memset(&node, 0, sizeof node); 2792 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2793 node.id = WPI_ID_BSS; 2794 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2795 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2796 node.action = htole32(WPI_ACTION_SET_RATE); 2797 node.antenna = WPI_ANTENNA_BOTH; 2798 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2799 if (error != 0) { 2800 aprint_error_dev(sc->sc_dev, "could not add BSS node\n"); 2801 return error; 2802 } 2803 2804 return 0; 2805 } 2806 2807 /* 2808 * Send a scan request to the firmware. Since this command is huge, we map it 2809 * into a mbuf instead of using the pre-allocated set of commands. 2810 */ 2811 static int 2812 wpi_scan(struct wpi_softc *sc) 2813 { 2814 struct ieee80211com *ic = &sc->sc_ic; 2815 struct wpi_tx_ring *ring = &sc->cmdq; 2816 struct wpi_tx_desc *desc; 2817 struct wpi_tx_data *data; 2818 struct wpi_tx_cmd *cmd; 2819 struct wpi_scan_hdr *hdr; 2820 struct wpi_scan_chan *chan; 2821 struct ieee80211_frame *wh; 2822 struct ieee80211_rateset *rs; 2823 struct ieee80211_channel *c; 2824 uint8_t *frm; 2825 int pktlen, error, nrates; 2826 2827 if (ic->ic_curchan == NULL) 2828 return EIO; 2829 2830 desc = &ring->desc[ring->cur]; 2831 data = &ring->data[ring->cur]; 2832 2833 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2834 if (data->m == NULL) { 2835 aprint_error_dev(sc->sc_dev, 2836 "could not allocate mbuf for scan command\n"); 2837 return ENOMEM; 2838 } 2839 MCLGET(data->m, M_DONTWAIT); 2840 if (!(data->m->m_flags & M_EXT)) { 2841 m_freem(data->m); 2842 data->m = NULL; 2843 aprint_error_dev(sc->sc_dev, 2844 "could not allocate mbuf for scan command\n"); 2845 return ENOMEM; 2846 } 2847 2848 cmd = mtod(data->m, struct wpi_tx_cmd *); 2849 cmd->code = WPI_CMD_SCAN; 2850 cmd->flags = 0; 2851 cmd->qid = ring->qid; 2852 cmd->idx = ring->cur; 2853 2854 hdr = (struct wpi_scan_hdr *)cmd->data; 2855 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2856 hdr->cmd.flags = htole32(WPI_TX_AUTO_SEQ); 2857 hdr->cmd.id = WPI_ID_BROADCAST; 2858 hdr->cmd.lifetime = htole32(WPI_LIFETIME_INFINITE); 2859 /* 2860 * Move to the next channel if no packets are received within 5 msecs 2861 * after sending the probe request (this helps to reduce the duration 2862 * of active scans). 2863 */ 2864 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2865 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2866 2867 if (ic->ic_curchan->ic_flags & IEEE80211_CHAN_5GHZ) { 2868 hdr->crc_threshold = htole16(1); 2869 /* send probe requests at 6Mbps */ 2870 hdr->cmd.rate = wpi_plcp_signal(12); 2871 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 2872 } else { 2873 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2874 /* send probe requests at 1Mbps */ 2875 hdr->cmd.rate = wpi_plcp_signal(2); 2876 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 2877 } 2878 2879 /* for directed scans, firmware inserts the essid IE itself */ 2880 if (ic->ic_des_esslen != 0) { 2881 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2882 hdr->essid[0].len = ic->ic_des_esslen; 2883 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2884 } 2885 2886 /* 2887 * Build a probe request frame. Most of the following code is a 2888 * copy & paste of what is done in net80211. 2889 */ 2890 wh = (struct ieee80211_frame *)(hdr + 1); 2891 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2892 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2893 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2894 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2895 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2896 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2897 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2898 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2899 2900 frm = (uint8_t *)(wh + 1); 2901 2902 /* add empty essid IE (firmware generates it for directed scans) */ 2903 *frm++ = IEEE80211_ELEMID_SSID; 2904 *frm++ = 0; 2905 2906 /* add supported rates IE */ 2907 *frm++ = IEEE80211_ELEMID_RATES; 2908 nrates = rs->rs_nrates; 2909 if (nrates > IEEE80211_RATE_SIZE) 2910 nrates = IEEE80211_RATE_SIZE; 2911 *frm++ = nrates; 2912 memcpy(frm, rs->rs_rates, nrates); 2913 frm += nrates; 2914 2915 /* add supported xrates IE */ 2916 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2917 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2918 *frm++ = IEEE80211_ELEMID_XRATES; 2919 *frm++ = nrates; 2920 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2921 frm += nrates; 2922 } 2923 2924 /* setup length of probe request */ 2925 hdr->cmd.len = htole16(frm - (uint8_t *)wh); 2926 2927 chan = (struct wpi_scan_chan *)frm; 2928 c = ic->ic_curchan; 2929 2930 chan->chan = ieee80211_chan2ieee(ic, c); 2931 chan->flags = 0; 2932 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2933 chan->flags |= WPI_CHAN_ACTIVE; 2934 if (ic->ic_des_esslen != 0) 2935 chan->flags |= WPI_CHAN_DIRECT; 2936 } 2937 chan->dsp_gain = 0x6e; 2938 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2939 chan->rf_gain = 0x3b; 2940 chan->active = htole16(10); 2941 chan->passive = htole16(110); 2942 } else { 2943 chan->rf_gain = 0x28; 2944 chan->active = htole16(20); 2945 chan->passive = htole16(120); 2946 } 2947 hdr->nchan++; 2948 chan++; 2949 2950 frm += sizeof (struct wpi_scan_chan); 2951 2952 hdr->len = htole16(frm - (uint8_t *)hdr); 2953 pktlen = frm - (uint8_t *)cmd; 2954 2955 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, NULL, 2956 BUS_DMA_NOWAIT); 2957 if (error != 0) { 2958 aprint_error_dev(sc->sc_dev, "could not map scan command\n"); 2959 m_freem(data->m); 2960 data->m = NULL; 2961 return error; 2962 } 2963 2964 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2965 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2966 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2967 2968 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2969 ring->desc_dma.map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2970 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 2971 BUS_DMASYNC_PREWRITE); 2972 2973 /* kick cmd ring */ 2974 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2975 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2976 2977 return 0; /* will be notified async. of failure/success */ 2978 } 2979 2980 static int 2981 wpi_config(struct wpi_softc *sc) 2982 { 2983 struct ieee80211com *ic = &sc->sc_ic; 2984 struct ifnet *ifp = ic->ic_ifp; 2985 struct wpi_power power; 2986 struct wpi_bluetooth bluetooth; 2987 struct wpi_node_info node; 2988 int error; 2989 2990 memset(&power, 0, sizeof power); 2991 power.flags = htole32(WPI_POWER_CAM | 0x8); 2992 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2993 if (error != 0) { 2994 aprint_error_dev(sc->sc_dev, "could not set power mode\n"); 2995 return error; 2996 } 2997 2998 /* configure bluetooth coexistence */ 2999 memset(&bluetooth, 0, sizeof bluetooth); 3000 bluetooth.flags = 3; 3001 bluetooth.lead = 0xaa; 3002 bluetooth.kill = 1; 3003 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 3004 0); 3005 if (error != 0) { 3006 aprint_error_dev(sc->sc_dev, 3007 "could not configure bluetooth coexistence\n"); 3008 return error; 3009 } 3010 3011 /* configure adapter */ 3012 memset(&sc->config, 0, sizeof (struct wpi_config)); 3013 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 3014 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 3015 /* set default channel */ 3016 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3017 sc->config.flags = htole32(WPI_CONFIG_TSF); 3018 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 3019 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 3020 WPI_CONFIG_24GHZ); 3021 } 3022 sc->config.filter = 0; 3023 switch (ic->ic_opmode) { 3024 case IEEE80211_M_STA: 3025 sc->config.mode = WPI_MODE_STA; 3026 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 3027 break; 3028 case IEEE80211_M_IBSS: 3029 case IEEE80211_M_AHDEMO: 3030 sc->config.mode = WPI_MODE_IBSS; 3031 break; 3032 case IEEE80211_M_HOSTAP: 3033 sc->config.mode = WPI_MODE_HOSTAP; 3034 break; 3035 case IEEE80211_M_MONITOR: 3036 sc->config.mode = WPI_MODE_MONITOR; 3037 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 3038 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 3039 break; 3040 } 3041 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 3042 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 3043 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 3044 sizeof (struct wpi_config), 0); 3045 if (error != 0) { 3046 aprint_error_dev(sc->sc_dev, "configure command failed\n"); 3047 return error; 3048 } 3049 3050 /* configuration has changed, set Tx power accordingly */ 3051 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 3052 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 3053 return error; 3054 } 3055 3056 /* add broadcast node */ 3057 memset(&node, 0, sizeof node); 3058 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 3059 node.id = WPI_ID_BROADCAST; 3060 node.rate = wpi_plcp_signal(2); 3061 node.action = htole32(WPI_ACTION_SET_RATE); 3062 node.antenna = WPI_ANTENNA_BOTH; 3063 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 3064 if (error != 0) { 3065 aprint_error_dev(sc->sc_dev, "could not add broadcast node\n"); 3066 return error; 3067 } 3068 3069 if ((error = wpi_mrr_setup(sc)) != 0) { 3070 aprint_error_dev(sc->sc_dev, "could not setup MRR\n"); 3071 return error; 3072 } 3073 3074 return 0; 3075 } 3076 3077 static void 3078 wpi_stop_master(struct wpi_softc *sc) 3079 { 3080 uint32_t tmp; 3081 int ntries; 3082 3083 tmp = WPI_READ(sc, WPI_RESET); 3084 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 3085 3086 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3087 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 3088 return; /* already asleep */ 3089 3090 for (ntries = 0; ntries < 100; ntries++) { 3091 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 3092 break; 3093 DELAY(10); 3094 } 3095 if (ntries == 100) { 3096 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 3097 } 3098 } 3099 3100 static int 3101 wpi_power_up(struct wpi_softc *sc) 3102 { 3103 uint32_t tmp; 3104 int ntries; 3105 3106 wpi_mem_lock(sc); 3107 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 3108 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 3109 wpi_mem_unlock(sc); 3110 3111 for (ntries = 0; ntries < 5000; ntries++) { 3112 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 3113 break; 3114 DELAY(10); 3115 } 3116 if (ntries == 5000) { 3117 aprint_error_dev(sc->sc_dev, 3118 "timeout waiting for NIC to power up\n"); 3119 return ETIMEDOUT; 3120 } 3121 return 0; 3122 } 3123 3124 static int 3125 wpi_reset(struct wpi_softc *sc) 3126 { 3127 uint32_t tmp; 3128 int ntries; 3129 3130 /* clear any pending interrupts */ 3131 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3132 3133 tmp = WPI_READ(sc, WPI_PLL_CTL); 3134 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 3135 3136 tmp = WPI_READ(sc, WPI_CHICKEN); 3137 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 3138 3139 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3140 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 3141 3142 /* wait for clock stabilization */ 3143 for (ntries = 0; ntries < 1000; ntries++) { 3144 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 3145 break; 3146 DELAY(10); 3147 } 3148 if (ntries == 1000) { 3149 aprint_error_dev(sc->sc_dev, 3150 "timeout waiting for clock stabilization\n"); 3151 return ETIMEDOUT; 3152 } 3153 3154 /* initialize EEPROM */ 3155 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3156 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3157 aprint_error_dev(sc->sc_dev, "EEPROM not found\n"); 3158 return EIO; 3159 } 3160 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3161 3162 return 0; 3163 } 3164 3165 static void 3166 wpi_hw_config(struct wpi_softc *sc) 3167 { 3168 uint32_t rev, hw; 3169 3170 /* voodoo from the reference driver */ 3171 hw = WPI_READ(sc, WPI_HWCONFIG); 3172 3173 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3174 rev = PCI_REVISION(rev); 3175 if ((rev & 0xc0) == 0x40) 3176 hw |= WPI_HW_ALM_MB; 3177 else if (!(rev & 0x80)) 3178 hw |= WPI_HW_ALM_MM; 3179 3180 if (sc->cap == 0x80) 3181 hw |= WPI_HW_SKU_MRC; 3182 3183 hw &= ~WPI_HW_REV_D; 3184 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3185 hw |= WPI_HW_REV_D; 3186 3187 if (sc->type > 1) 3188 hw |= WPI_HW_TYPE_B; 3189 3190 DPRINTF(("setting h/w config %x\n", hw)); 3191 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3192 } 3193 3194 static int 3195 wpi_init(struct ifnet *ifp) 3196 { 3197 struct wpi_softc *sc = ifp->if_softc; 3198 struct ieee80211com *ic = &sc->sc_ic; 3199 uint32_t tmp; 3200 int qid, ntries, error; 3201 3202 wpi_stop(ifp,1); 3203 (void)wpi_reset(sc); 3204 3205 wpi_mem_lock(sc); 3206 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3207 DELAY(20); 3208 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3209 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3210 wpi_mem_unlock(sc); 3211 3212 (void)wpi_power_up(sc); 3213 wpi_hw_config(sc); 3214 3215 /* init Rx ring */ 3216 wpi_mem_lock(sc); 3217 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3218 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3219 offsetof(struct wpi_shared, next)); 3220 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3221 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3222 wpi_mem_unlock(sc); 3223 3224 /* init Tx rings */ 3225 wpi_mem_lock(sc); 3226 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3227 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3228 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3229 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3230 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3231 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3232 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3233 3234 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3235 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3236 3237 for (qid = 0; qid < 6; qid++) { 3238 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3239 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3240 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3241 } 3242 wpi_mem_unlock(sc); 3243 3244 /* clear "radio off" and "disable command" bits (reversed logic) */ 3245 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3246 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3247 3248 /* clear any pending interrupts */ 3249 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3250 /* enable interrupts */ 3251 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3252 3253 /* not sure why/if this is necessary... */ 3254 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3255 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3256 3257 if ((error = wpi_load_firmware(sc)) != 0) 3258 /* wpi_load_firmware prints error messages for us. */ 3259 goto fail1; 3260 3261 /* Check the status of the radio switch */ 3262 mutex_enter(&sc->sc_rsw_mtx); 3263 if (wpi_getrfkill(sc)) { 3264 mutex_exit(&sc->sc_rsw_mtx); 3265 aprint_error_dev(sc->sc_dev, 3266 "radio is disabled by hardware switch\n"); 3267 ifp->if_flags &= ~IFF_UP; 3268 error = EBUSY; 3269 goto fail1; 3270 } 3271 mutex_exit(&sc->sc_rsw_mtx); 3272 3273 /* wait for thermal sensors to calibrate */ 3274 for (ntries = 0; ntries < 1000; ntries++) { 3275 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3276 break; 3277 DELAY(10); 3278 } 3279 if (ntries == 1000) { 3280 aprint_error_dev(sc->sc_dev, 3281 "timeout waiting for thermal sensors calibration\n"); 3282 error = ETIMEDOUT; 3283 goto fail1; 3284 } 3285 DPRINTF(("temperature %d\n", sc->temp)); 3286 3287 if ((error = wpi_config(sc)) != 0) { 3288 aprint_error_dev(sc->sc_dev, "could not configure device\n"); 3289 goto fail1; 3290 } 3291 3292 ifp->if_flags &= ~IFF_OACTIVE; 3293 ifp->if_flags |= IFF_RUNNING; 3294 3295 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3296 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3297 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3298 } 3299 else 3300 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3301 3302 return 0; 3303 3304 fail1: wpi_stop(ifp, 1); 3305 return error; 3306 } 3307 3308 static void 3309 wpi_stop(struct ifnet *ifp, int disable) 3310 { 3311 struct wpi_softc *sc = ifp->if_softc; 3312 struct ieee80211com *ic = &sc->sc_ic; 3313 uint32_t tmp; 3314 int ac; 3315 3316 ifp->if_timer = sc->sc_tx_timer = 0; 3317 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3318 3319 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3320 3321 /* disable interrupts */ 3322 WPI_WRITE(sc, WPI_MASK, 0); 3323 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3324 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3325 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3326 3327 wpi_mem_lock(sc); 3328 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3329 wpi_mem_unlock(sc); 3330 3331 /* reset all Tx rings */ 3332 for (ac = 0; ac < 4; ac++) 3333 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3334 wpi_reset_tx_ring(sc, &sc->cmdq); 3335 3336 /* reset Rx ring */ 3337 wpi_reset_rx_ring(sc, &sc->rxq); 3338 3339 wpi_mem_lock(sc); 3340 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3341 wpi_mem_unlock(sc); 3342 3343 DELAY(5); 3344 3345 wpi_stop_master(sc); 3346 3347 tmp = WPI_READ(sc, WPI_RESET); 3348 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3349 } 3350 3351 static bool 3352 wpi_resume(device_t dv, const pmf_qual_t *qual) 3353 { 3354 struct wpi_softc *sc = device_private(dv); 3355 3356 (void)wpi_reset(sc); 3357 3358 return true; 3359 } 3360 3361 /* 3362 * Return whether or not the radio is enabled in hardware 3363 * (i.e. the rfkill switch is "off"). 3364 */ 3365 static int 3366 wpi_getrfkill(struct wpi_softc *sc) 3367 { 3368 uint32_t tmp; 3369 3370 wpi_mem_lock(sc); 3371 tmp = wpi_mem_read(sc, WPI_MEM_RFKILL); 3372 wpi_mem_unlock(sc); 3373 3374 KASSERT(mutex_owned(&sc->sc_rsw_mtx)); 3375 if (tmp & 0x01) { 3376 /* switch is on */ 3377 if (sc->sc_rsw_status != WPI_RSW_ON) { 3378 sc->sc_rsw_status = WPI_RSW_ON; 3379 sysmon_pswitch_event(&sc->sc_rsw, 3380 PSWITCH_EVENT_PRESSED); 3381 } 3382 } else { 3383 /* switch is off */ 3384 if (sc->sc_rsw_status != WPI_RSW_OFF) { 3385 sc->sc_rsw_status = WPI_RSW_OFF; 3386 sysmon_pswitch_event(&sc->sc_rsw, 3387 PSWITCH_EVENT_RELEASED); 3388 } 3389 } 3390 3391 return !(tmp & 0x01); 3392 } 3393 3394 static int 3395 wpi_sysctl_radio(SYSCTLFN_ARGS) 3396 { 3397 struct sysctlnode node; 3398 struct wpi_softc *sc; 3399 int val, error; 3400 3401 node = *rnode; 3402 sc = (struct wpi_softc *)node.sysctl_data; 3403 3404 mutex_enter(&sc->sc_rsw_mtx); 3405 val = !wpi_getrfkill(sc); 3406 mutex_exit(&sc->sc_rsw_mtx); 3407 3408 node.sysctl_data = &val; 3409 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 3410 3411 if (error || newp == NULL) 3412 return error; 3413 3414 return 0; 3415 } 3416 3417 static void 3418 wpi_sysctlattach(struct wpi_softc *sc) 3419 { 3420 int rc; 3421 const struct sysctlnode *rnode; 3422 const struct sysctlnode *cnode; 3423 3424 struct sysctllog **clog = &sc->sc_sysctllog; 3425 3426 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 3427 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 3428 SYSCTL_DESCR("wpi controls and statistics"), 3429 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 3430 goto err; 3431 3432 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3433 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 3434 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 3435 wpi_sysctl_radio, 0, (void *)sc, 0, CTL_CREATE, CTL_EOL)) != 0) 3436 goto err; 3437 3438 #ifdef WPI_DEBUG 3439 /* control debugging printfs */ 3440 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3441 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 3442 "debug", SYSCTL_DESCR("Enable debugging output"), 3443 NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 3444 goto err; 3445 #endif 3446 3447 return; 3448 err: 3449 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 3450 } 3451 3452 static void 3453 wpi_rsw_thread(void *arg) 3454 { 3455 struct wpi_softc *sc = (struct wpi_softc *)arg; 3456 3457 mutex_enter(&sc->sc_rsw_mtx); 3458 for (;;) { 3459 cv_timedwait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx, hz); 3460 if (sc->sc_dying) { 3461 sc->sc_rsw_lwp = NULL; 3462 cv_broadcast(&sc->sc_rsw_cv); 3463 mutex_exit(&sc->sc_rsw_mtx); 3464 kthread_exit(0); 3465 } 3466 wpi_getrfkill(sc); 3467 } 3468 } 3469 3470
Indexes created Mon Sep 29 18:09:42 GMT 2025