if_wpi.c revision 1.85
1 /* $NetBSD: if_wpi.c,v 1.85 2018/12/22 14:07:53 maxv 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 1.85 2018/12/22 14:07:53 maxv Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 28 #include <sys/param.h> 29 #include <sys/sockio.h> 30 #include <sys/sysctl.h> 31 #include <sys/mbuf.h> 32 #include <sys/kernel.h> 33 #include <sys/socket.h> 34 #include <sys/systm.h> 35 #include <sys/malloc.h> 36 #include <sys/mutex.h> 37 #include <sys/once.h> 38 #include <sys/conf.h> 39 #include <sys/kauth.h> 40 #include <sys/callout.h> 41 #include <sys/proc.h> 42 #include <sys/kthread.h> 43 44 #include <sys/bus.h> 45 #include <machine/endian.h> 46 #include <sys/intr.h> 47 48 #include <dev/pci/pcireg.h> 49 #include <dev/pci/pcivar.h> 50 #include <dev/pci/pcidevs.h> 51 52 #include <dev/sysmon/sysmonvar.h> 53 54 #include <net/bpf.h> 55 #include <net/if.h> 56 #include <net/if_arp.h> 57 #include <net/if_dl.h> 58 #include <net/if_ether.h> 59 #include <net/if_media.h> 60 #include <net/if_types.h> 61 62 #include <netinet/in.h> 63 #include <netinet/in_systm.h> 64 #include <netinet/in_var.h> 65 #include <netinet/ip.h> 66 67 #include <net80211/ieee80211_var.h> 68 #include <net80211/ieee80211_amrr.h> 69 #include <net80211/ieee80211_radiotap.h> 70 71 #include <dev/firmload.h> 72 73 #include <dev/pci/if_wpireg.h> 74 #include <dev/pci/if_wpivar.h> 75 76 static const char wpi_firmware_name[] = "iwlwifi-3945.ucode"; 77 static once_t wpi_firmware_init; 78 static kmutex_t wpi_firmware_mutex; 79 static size_t wpi_firmware_users; 80 static uint8_t *wpi_firmware_image; 81 static size_t wpi_firmware_size; 82 83 static int wpi_match(device_t, cfdata_t, void *); 84 static void wpi_attach(device_t, device_t, void *); 85 static int wpi_detach(device_t , int); 86 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 87 void **, bus_size_t, bus_size_t, int); 88 static void wpi_dma_contig_free(struct wpi_dma_info *); 89 static int wpi_alloc_shared(struct wpi_softc *); 90 static void wpi_free_shared(struct wpi_softc *); 91 static int wpi_alloc_fwmem(struct wpi_softc *); 92 static void wpi_free_fwmem(struct wpi_softc *); 93 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 94 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 95 static int wpi_alloc_rpool(struct wpi_softc *); 96 static void wpi_free_rpool(struct wpi_softc *); 97 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 98 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 99 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 100 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 101 int, int); 102 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 103 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 104 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 105 static void wpi_newassoc(struct ieee80211_node *, int); 106 static int wpi_media_change(struct ifnet *); 107 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 108 static void wpi_mem_lock(struct wpi_softc *); 109 static void wpi_mem_unlock(struct wpi_softc *); 110 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 111 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 112 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 113 const uint32_t *, int); 114 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 115 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 116 static int wpi_cache_firmware(struct wpi_softc *); 117 static void wpi_release_firmware(void); 118 static int wpi_load_firmware(struct wpi_softc *); 119 static void wpi_calib_timeout(void *); 120 static void wpi_iter_func(void *, struct ieee80211_node *); 121 static void wpi_power_calibration(struct wpi_softc *, int); 122 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 123 struct wpi_rx_data *); 124 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 125 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 126 static void wpi_notif_intr(struct wpi_softc *); 127 static int wpi_intr(void *); 128 static void wpi_softintr(void *); 129 static void wpi_read_eeprom(struct wpi_softc *); 130 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 131 static void wpi_read_eeprom_group(struct wpi_softc *, int); 132 static uint8_t wpi_plcp_signal(int); 133 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 134 struct ieee80211_node *, int); 135 static void wpi_start(struct ifnet *); 136 static void wpi_watchdog(struct ifnet *); 137 static int wpi_ioctl(struct ifnet *, u_long, void *); 138 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 139 static int wpi_wme_update(struct ieee80211com *); 140 static int wpi_mrr_setup(struct wpi_softc *); 141 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 142 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 143 static int wpi_set_txpower(struct wpi_softc *, 144 struct ieee80211_channel *, int); 145 static int wpi_get_power_index(struct wpi_softc *, 146 struct wpi_power_group *, struct ieee80211_channel *, int); 147 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 148 static int wpi_auth(struct wpi_softc *); 149 static int wpi_scan(struct wpi_softc *); 150 static int wpi_config(struct wpi_softc *); 151 static void wpi_stop_master(struct wpi_softc *); 152 static int wpi_power_up(struct wpi_softc *); 153 static int wpi_reset(struct wpi_softc *); 154 static void wpi_hw_config(struct wpi_softc *); 155 static int wpi_init(struct ifnet *); 156 static void wpi_stop(struct ifnet *, int); 157 static bool wpi_resume(device_t, const pmf_qual_t *); 158 static int wpi_getrfkill(struct wpi_softc *); 159 static void wpi_sysctlattach(struct wpi_softc *); 160 static void wpi_rsw_thread(void *); 161 162 #ifdef WPI_DEBUG 163 #define DPRINTF(x) do { if (wpi_debug > 0) printf x; } while (0) 164 #define DPRINTFN(n, x) do { if (wpi_debug >= (n)) printf x; } while (0) 165 int wpi_debug = 1; 166 #else 167 #define DPRINTF(x) 168 #define DPRINTFN(n, x) 169 #endif 170 171 CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 172 wpi_detach, NULL); 173 174 static int 175 wpi_match(device_t parent, cfdata_t match __unused, void *aux) 176 { 177 struct pci_attach_args *pa = aux; 178 179 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 180 return 0; 181 182 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 183 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 184 return 1; 185 186 return 0; 187 } 188 189 /* Base Address Register */ 190 #define WPI_PCI_BAR0 0x10 191 192 static int 193 wpi_attach_once(void) 194 { 195 196 mutex_init(&wpi_firmware_mutex, MUTEX_DEFAULT, IPL_NONE); 197 return 0; 198 } 199 200 static void 201 wpi_attach(device_t parent __unused, device_t self, void *aux) 202 { 203 struct wpi_softc *sc = device_private(self); 204 struct ieee80211com *ic = &sc->sc_ic; 205 struct ifnet *ifp = &sc->sc_ec.ec_if; 206 struct pci_attach_args *pa = aux; 207 const char *intrstr; 208 bus_space_tag_t memt; 209 bus_space_handle_t memh; 210 pcireg_t data; 211 int ac, error; 212 char intrbuf[PCI_INTRSTR_LEN]; 213 214 RUN_ONCE(&wpi_firmware_init, wpi_attach_once); 215 sc->fw_used = false; 216 217 sc->sc_dev = self; 218 sc->sc_pct = pa->pa_pc; 219 sc->sc_pcitag = pa->pa_tag; 220 221 sc->sc_rsw_status = WPI_RSW_UNKNOWN; 222 sc->sc_rsw.smpsw_name = device_xname(self); 223 sc->sc_rsw.smpsw_type = PSWITCH_TYPE_RADIO; 224 error = sysmon_pswitch_register(&sc->sc_rsw); 225 if (error) { 226 aprint_error_dev(self, 227 "unable to register radio switch with sysmon\n"); 228 return; 229 } 230 mutex_init(&sc->sc_rsw_mtx, MUTEX_DEFAULT, IPL_NONE); 231 cv_init(&sc->sc_rsw_cv, "wpirsw"); 232 sc->sc_rsw_suspend = false; 233 sc->sc_rsw_suspended = false; 234 if (kthread_create(PRI_NONE, 0, NULL, 235 wpi_rsw_thread, sc, &sc->sc_rsw_lwp, "%s", device_xname(self))) { 236 aprint_error_dev(self, "couldn't create switch thread\n"); 237 } 238 239 callout_init(&sc->calib_to, 0); 240 callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); 241 242 pci_aprint_devinfo(pa, NULL); 243 244 /* enable bus-mastering */ 245 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 246 data |= PCI_COMMAND_MASTER_ENABLE; 247 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 248 249 /* map the register window */ 250 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 251 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 252 if (error != 0) { 253 aprint_error_dev(self, "could not map memory space\n"); 254 return; 255 } 256 257 sc->sc_st = memt; 258 sc->sc_sh = memh; 259 sc->sc_dmat = pa->pa_dmat; 260 261 sc->sc_soft_ih = softint_establish(SOFTINT_NET, wpi_softintr, sc); 262 if (sc->sc_soft_ih == NULL) { 263 aprint_error_dev(self, "could not establish softint\n"); 264 goto unmap; 265 } 266 267 if (pci_intr_alloc(pa, &sc->sc_pihp, NULL, 0)) { 268 aprint_error_dev(self, "could not map interrupt\n"); 269 goto failsi; 270 } 271 272 intrstr = pci_intr_string(sc->sc_pct, sc->sc_pihp[0], intrbuf, 273 sizeof(intrbuf)); 274 sc->sc_ih = pci_intr_establish_xname(sc->sc_pct, sc->sc_pihp[0], 275 IPL_NET, wpi_intr, sc, device_xname(self)); 276 if (sc->sc_ih == NULL) { 277 aprint_error_dev(self, "could not establish interrupt"); 278 if (intrstr != NULL) 279 aprint_error(" at %s", intrstr); 280 aprint_error("\n"); 281 goto failia; 282 } 283 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 284 285 /* 286 * Put adapter into a known state. 287 */ 288 if ((error = wpi_reset(sc)) != 0) { 289 aprint_error_dev(self, "could not reset adapter\n"); 290 goto failih; 291 } 292 293 /* 294 * Allocate DMA memory for firmware transfers. 295 */ 296 if ((error = wpi_alloc_fwmem(sc)) != 0) { 297 aprint_error_dev(self, "could not allocate firmware memory\n"); 298 goto failih; 299 } 300 301 /* 302 * Allocate shared page and Tx/Rx rings. 303 */ 304 if ((error = wpi_alloc_shared(sc)) != 0) { 305 aprint_error_dev(self, "could not allocate shared area\n"); 306 goto fail1; 307 } 308 309 if ((error = wpi_alloc_rpool(sc)) != 0) { 310 aprint_error_dev(self, "could not allocate Rx buffers\n"); 311 goto fail2; 312 } 313 314 for (ac = 0; ac < 4; ac++) { 315 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, 316 ac); 317 if (error != 0) { 318 aprint_error_dev(self, 319 "could not allocate Tx ring %d\n", ac); 320 goto fail3; 321 } 322 } 323 324 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 325 if (error != 0) { 326 aprint_error_dev(self, "could not allocate command ring\n"); 327 goto fail3; 328 } 329 330 error = wpi_alloc_rx_ring(sc, &sc->rxq); 331 if (error != 0) { 332 aprint_error_dev(self, "could not allocate Rx ring\n"); 333 goto fail4; 334 } 335 336 ic->ic_ifp = ifp; 337 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 338 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 339 ic->ic_state = IEEE80211_S_INIT; 340 341 /* set device capabilities */ 342 ic->ic_caps = 343 IEEE80211_C_WPA | /* 802.11i */ 344 IEEE80211_C_MONITOR | /* monitor mode supported */ 345 IEEE80211_C_TXPMGT | /* tx power management */ 346 IEEE80211_C_SHSLOT | /* short slot time supported */ 347 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 348 IEEE80211_C_WME; /* 802.11e */ 349 350 /* read supported channels and MAC address from EEPROM */ 351 wpi_read_eeprom(sc); 352 353 /* set supported .11a, .11b and .11g rates */ 354 ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_std_rateset_11a; 355 ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; 356 ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; 357 358 /* IBSS channel undefined for now */ 359 ic->ic_ibss_chan = &ic->ic_channels[0]; 360 361 ifp->if_softc = sc; 362 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 363 ifp->if_init = wpi_init; 364 ifp->if_stop = wpi_stop; 365 ifp->if_ioctl = wpi_ioctl; 366 ifp->if_start = wpi_start; 367 ifp->if_watchdog = wpi_watchdog; 368 IFQ_SET_READY(&ifp->if_snd); 369 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 370 371 error = if_initialize(ifp); 372 if (error != 0) { 373 aprint_error_dev(sc->sc_dev, "if_initialize failed(%d)\n", 374 error); 375 goto fail5; 376 } 377 ieee80211_ifattach(ic); 378 /* Use common softint-based if_input */ 379 ifp->if_percpuq = if_percpuq_create(ifp); 380 if_register(ifp); 381 382 /* override default methods */ 383 ic->ic_node_alloc = wpi_node_alloc; 384 ic->ic_newassoc = wpi_newassoc; 385 ic->ic_wme.wme_update = wpi_wme_update; 386 387 /* override state transition machine */ 388 sc->sc_newstate = ic->ic_newstate; 389 ic->ic_newstate = wpi_newstate; 390 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 391 392 sc->amrr.amrr_min_success_threshold = 1; 393 sc->amrr.amrr_max_success_threshold = 15; 394 395 wpi_sysctlattach(sc); 396 397 if (pmf_device_register(self, NULL, wpi_resume)) 398 pmf_class_network_register(self, ifp); 399 else 400 aprint_error_dev(self, "couldn't establish power handler\n"); 401 402 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 403 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 404 &sc->sc_drvbpf); 405 406 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 407 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 408 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 409 410 sc->sc_txtap_len = sizeof sc->sc_txtapu; 411 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 412 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 413 414 ieee80211_announce(ic); 415 416 return; 417 418 /* free allocated memory if something failed during attachment */ 419 fail5: wpi_free_rx_ring(sc, &sc->rxq); 420 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 421 fail3: while (--ac >= 0) 422 wpi_free_tx_ring(sc, &sc->txq[ac]); 423 wpi_free_rpool(sc); 424 fail2: wpi_free_shared(sc); 425 fail1: wpi_free_fwmem(sc); 426 failih: pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 427 sc->sc_ih = NULL; 428 failia: pci_intr_release(sc->sc_pct, sc->sc_pihp, 1); 429 sc->sc_pihp = NULL; 430 failsi: softint_disestablish(sc->sc_soft_ih); 431 sc->sc_soft_ih = NULL; 432 unmap: bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 433 } 434 435 static int 436 wpi_detach(device_t self, int flags __unused) 437 { 438 struct wpi_softc *sc = device_private(self); 439 struct ifnet *ifp = sc->sc_ic.ic_ifp; 440 int ac; 441 442 wpi_stop(ifp, 1); 443 444 if (ifp != NULL) 445 bpf_detach(ifp); 446 ieee80211_ifdetach(&sc->sc_ic); 447 if (ifp != NULL) 448 if_detach(ifp); 449 450 for (ac = 0; ac < 4; ac++) 451 wpi_free_tx_ring(sc, &sc->txq[ac]); 452 wpi_free_tx_ring(sc, &sc->cmdq); 453 wpi_free_rx_ring(sc, &sc->rxq); 454 wpi_free_rpool(sc); 455 wpi_free_shared(sc); 456 457 if (sc->sc_ih != NULL) { 458 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 459 sc->sc_ih = NULL; 460 } 461 if (sc->sc_pihp != NULL) { 462 pci_intr_release(sc->sc_pct, sc->sc_pihp, 1); 463 sc->sc_pihp = NULL; 464 } 465 if (sc->sc_soft_ih != NULL) { 466 softint_disestablish(sc->sc_soft_ih); 467 sc->sc_soft_ih = NULL; 468 } 469 470 mutex_enter(&sc->sc_rsw_mtx); 471 sc->sc_dying = 1; 472 cv_signal(&sc->sc_rsw_cv); 473 while (sc->sc_rsw_lwp != NULL) 474 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 475 mutex_exit(&sc->sc_rsw_mtx); 476 sysmon_pswitch_unregister(&sc->sc_rsw); 477 478 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 479 480 if (sc->fw_used) { 481 sc->fw_used = false; 482 wpi_release_firmware(); 483 } 484 cv_destroy(&sc->sc_rsw_cv); 485 mutex_destroy(&sc->sc_rsw_mtx); 486 return 0; 487 } 488 489 static int 490 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, void **kvap, 491 bus_size_t size, bus_size_t alignment, int flags) 492 { 493 int nsegs, error; 494 495 dma->tag = tag; 496 dma->size = size; 497 498 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 499 if (error != 0) 500 goto fail; 501 502 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 503 flags); 504 if (error != 0) 505 goto fail; 506 507 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 508 if (error != 0) 509 goto fail; 510 511 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 512 if (error != 0) 513 goto fail; 514 515 memset(dma->vaddr, 0, size); 516 bus_dmamap_sync(dma->tag, dma->map, 0, size, BUS_DMASYNC_PREWRITE); 517 518 dma->paddr = dma->map->dm_segs[0].ds_addr; 519 if (kvap != NULL) 520 *kvap = dma->vaddr; 521 522 return 0; 523 524 fail: wpi_dma_contig_free(dma); 525 return error; 526 } 527 528 static void 529 wpi_dma_contig_free(struct wpi_dma_info *dma) 530 { 531 if (dma->map != NULL) { 532 if (dma->vaddr != NULL) { 533 bus_dmamap_unload(dma->tag, dma->map); 534 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 535 bus_dmamem_free(dma->tag, &dma->seg, 1); 536 dma->vaddr = NULL; 537 } 538 bus_dmamap_destroy(dma->tag, dma->map); 539 dma->map = NULL; 540 } 541 } 542 543 /* 544 * Allocate a shared page between host and NIC. 545 */ 546 static int 547 wpi_alloc_shared(struct wpi_softc *sc) 548 { 549 int error; 550 551 /* must be aligned on a 4K-page boundary */ 552 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 553 (void **)&sc->shared, sizeof (struct wpi_shared), WPI_BUF_ALIGN, 554 BUS_DMA_NOWAIT); 555 if (error != 0) 556 aprint_error_dev(sc->sc_dev, 557 "could not allocate shared area DMA memory\n"); 558 559 return error; 560 } 561 562 static void 563 wpi_free_shared(struct wpi_softc *sc) 564 { 565 wpi_dma_contig_free(&sc->shared_dma); 566 } 567 568 /* 569 * Allocate DMA-safe memory for firmware transfer. 570 */ 571 static int 572 wpi_alloc_fwmem(struct wpi_softc *sc) 573 { 574 int error; 575 576 /* allocate enough contiguous space to store text and data */ 577 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 578 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 579 BUS_DMA_NOWAIT); 580 581 if (error != 0) 582 aprint_error_dev(sc->sc_dev, 583 "could not allocate firmware transfer area DMA memory\n"); 584 return error; 585 } 586 587 static void 588 wpi_free_fwmem(struct wpi_softc *sc) 589 { 590 wpi_dma_contig_free(&sc->fw_dma); 591 } 592 593 static struct wpi_rbuf * 594 wpi_alloc_rbuf(struct wpi_softc *sc) 595 { 596 struct wpi_rbuf *rbuf; 597 598 mutex_enter(&sc->rxq.freelist_mtx); 599 rbuf = SLIST_FIRST(&sc->rxq.freelist); 600 if (rbuf != NULL) { 601 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 602 } 603 mutex_exit(&sc->rxq.freelist_mtx); 604 605 return rbuf; 606 } 607 608 /* 609 * This is called automatically by the network stack when the mbuf to which our 610 * Rx buffer is attached is freed. 611 */ 612 static void 613 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 614 { 615 struct wpi_rbuf *rbuf = arg; 616 struct wpi_softc *sc = rbuf->sc; 617 618 /* put the buffer back in the free list */ 619 620 mutex_enter(&sc->rxq.freelist_mtx); 621 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 622 mutex_exit(&sc->rxq.freelist_mtx); 623 624 if (__predict_true(m != NULL)) 625 pool_cache_put(mb_cache, m); 626 } 627 628 static int 629 wpi_alloc_rpool(struct wpi_softc *sc) 630 { 631 struct wpi_rx_ring *ring = &sc->rxq; 632 int i, error; 633 634 /* allocate a big chunk of DMA'able memory.. */ 635 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 636 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 637 if (error != 0) { 638 aprint_normal_dev(sc->sc_dev, 639 "could not allocate Rx buffers DMA memory\n"); 640 return error; 641 } 642 643 /* ..and split it into 3KB chunks */ 644 mutex_init(&ring->freelist_mtx, MUTEX_DEFAULT, IPL_NET); 645 SLIST_INIT(&ring->freelist); 646 for (i = 0; i < WPI_RBUF_COUNT; i++) { 647 struct wpi_rbuf *rbuf = &ring->rbuf[i]; 648 649 rbuf->sc = sc; /* backpointer for callbacks */ 650 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 651 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 652 653 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 654 } 655 656 return 0; 657 } 658 659 static void 660 wpi_free_rpool(struct wpi_softc *sc) 661 { 662 mutex_destroy(&sc->rxq.freelist_mtx); 663 wpi_dma_contig_free(&sc->rxq.buf_dma); 664 } 665 666 static int 667 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 668 { 669 bus_size_t size; 670 int i, error; 671 672 ring->cur = 0; 673 674 size = WPI_RX_RING_COUNT * sizeof (uint32_t); 675 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 676 (void **)&ring->desc, size, 677 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 678 if (error != 0) { 679 aprint_error_dev(sc->sc_dev, 680 "could not allocate rx ring DMA memory\n"); 681 goto fail; 682 } 683 684 /* 685 * Setup Rx buffers. 686 */ 687 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 688 struct wpi_rx_data *data = &ring->data[i]; 689 struct wpi_rbuf *rbuf; 690 691 error = bus_dmamap_create(sc->sc_dmat, WPI_RBUF_SIZE, 1, 692 WPI_RBUF_SIZE, 0, BUS_DMA_NOWAIT, &data->map); 693 if (error) { 694 aprint_error_dev(sc->sc_dev, 695 "could not allocate rx dma map\n"); 696 goto fail; 697 } 698 699 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 700 if (data->m == NULL) { 701 aprint_error_dev(sc->sc_dev, 702 "could not allocate rx mbuf\n"); 703 error = ENOMEM; 704 goto fail; 705 } 706 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 707 m_freem(data->m); 708 data->m = NULL; 709 aprint_error_dev(sc->sc_dev, 710 "could not allocate rx cluster\n"); 711 error = ENOMEM; 712 goto fail; 713 } 714 /* attach Rx buffer to mbuf */ 715 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 716 rbuf); 717 data->m->m_flags |= M_EXT_RW; 718 719 error = bus_dmamap_load(sc->sc_dmat, data->map, 720 mtod(data->m, void *), WPI_RBUF_SIZE, NULL, 721 BUS_DMA_NOWAIT | BUS_DMA_READ); 722 if (error) { 723 aprint_error_dev(sc->sc_dev, 724 "could not load mbuf: %d\n", error); 725 goto fail; 726 } 727 728 ring->desc[i] = htole32(rbuf->paddr); 729 } 730 731 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, size, 732 BUS_DMASYNC_PREWRITE); 733 734 return 0; 735 736 fail: wpi_free_rx_ring(sc, ring); 737 return error; 738 } 739 740 static void 741 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 742 { 743 int ntries; 744 745 wpi_mem_lock(sc); 746 747 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 748 for (ntries = 0; ntries < 100; ntries++) { 749 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 750 break; 751 DELAY(10); 752 } 753 #ifdef WPI_DEBUG 754 if (ntries == 100 && wpi_debug > 0) 755 aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n"); 756 #endif 757 wpi_mem_unlock(sc); 758 759 ring->cur = 0; 760 } 761 762 static void 763 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 764 { 765 int i; 766 767 wpi_dma_contig_free(&ring->desc_dma); 768 769 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 770 if (ring->data[i].m != NULL) { 771 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 772 m_freem(ring->data[i].m); 773 } 774 if (ring->data[i].map != NULL) { 775 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 776 } 777 } 778 } 779 780 static int 781 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 782 int qid) 783 { 784 int i, error; 785 786 ring->qid = qid; 787 ring->count = count; 788 ring->queued = 0; 789 ring->cur = 0; 790 791 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 792 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 793 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 794 if (error != 0) { 795 aprint_error_dev(sc->sc_dev, 796 "could not allocate tx ring DMA memory\n"); 797 goto fail; 798 } 799 800 /* update shared page with ring's base address */ 801 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 802 bus_dmamap_sync(sc->sc_dmat, sc->shared_dma.map, 0, 803 sizeof(struct wpi_shared), BUS_DMASYNC_PREWRITE); 804 805 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 806 (void **)&ring->cmd, count * sizeof (struct wpi_tx_cmd), 4, 807 BUS_DMA_NOWAIT); 808 if (error != 0) { 809 aprint_error_dev(sc->sc_dev, 810 "could not allocate tx cmd DMA memory\n"); 811 goto fail; 812 } 813 814 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 815 M_NOWAIT | M_ZERO); 816 if (ring->data == NULL) { 817 aprint_error_dev(sc->sc_dev, 818 "could not allocate tx data slots\n"); 819 goto fail; 820 } 821 822 for (i = 0; i < count; i++) { 823 struct wpi_tx_data *data = &ring->data[i]; 824 825 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 826 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 827 &data->map); 828 if (error != 0) { 829 aprint_error_dev(sc->sc_dev, 830 "could not create tx buf DMA map\n"); 831 goto fail; 832 } 833 } 834 835 return 0; 836 837 fail: wpi_free_tx_ring(sc, ring); 838 return error; 839 } 840 841 static void 842 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 843 { 844 int i, ntries; 845 846 wpi_mem_lock(sc); 847 848 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 849 for (ntries = 0; ntries < 100; ntries++) { 850 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 851 break; 852 DELAY(10); 853 } 854 #ifdef WPI_DEBUG 855 if (ntries == 100 && wpi_debug > 0) { 856 aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n", 857 ring->qid); 858 } 859 #endif 860 wpi_mem_unlock(sc); 861 862 for (i = 0; i < ring->count; i++) { 863 struct wpi_tx_data *data = &ring->data[i]; 864 865 if (data->m != NULL) { 866 bus_dmamap_unload(sc->sc_dmat, data->map); 867 m_freem(data->m); 868 data->m = NULL; 869 } 870 } 871 872 ring->queued = 0; 873 ring->cur = 0; 874 } 875 876 static void 877 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 878 { 879 int i; 880 881 wpi_dma_contig_free(&ring->desc_dma); 882 wpi_dma_contig_free(&ring->cmd_dma); 883 884 if (ring->data != NULL) { 885 for (i = 0; i < ring->count; i++) { 886 struct wpi_tx_data *data = &ring->data[i]; 887 888 if (data->m != NULL) { 889 bus_dmamap_unload(sc->sc_dmat, data->map); 890 m_freem(data->m); 891 } 892 } 893 free(ring->data, M_DEVBUF); 894 } 895 } 896 897 /*ARGUSED*/ 898 static struct ieee80211_node * 899 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 900 { 901 struct wpi_node *wn; 902 903 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 904 905 return (struct ieee80211_node *)wn; 906 } 907 908 static void 909 wpi_newassoc(struct ieee80211_node *ni, int isnew) 910 { 911 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 912 int i; 913 914 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 915 916 /* set rate to some reasonable initial value */ 917 for (i = ni->ni_rates.rs_nrates - 1; 918 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 919 i--); 920 ni->ni_txrate = i; 921 } 922 923 static int 924 wpi_media_change(struct ifnet *ifp) 925 { 926 int error; 927 928 error = ieee80211_media_change(ifp); 929 if (error != ENETRESET) 930 return error; 931 932 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 933 wpi_init(ifp); 934 935 return 0; 936 } 937 938 static int 939 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 940 { 941 struct ifnet *ifp = ic->ic_ifp; 942 struct wpi_softc *sc = ifp->if_softc; 943 struct ieee80211_node *ni; 944 enum ieee80211_state ostate = ic->ic_state; 945 int error; 946 947 callout_stop(&sc->calib_to); 948 949 switch (nstate) { 950 case IEEE80211_S_SCAN: 951 952 if (sc->is_scanning) 953 break; 954 955 sc->is_scanning = true; 956 957 if (ostate != IEEE80211_S_SCAN) { 958 /* make the link LED blink while we're scanning */ 959 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 960 } 961 962 if ((error = wpi_scan(sc)) != 0) { 963 aprint_error_dev(sc->sc_dev, 964 "could not initiate scan\n"); 965 return error; 966 } 967 break; 968 969 case IEEE80211_S_ASSOC: 970 if (ic->ic_state != IEEE80211_S_RUN) 971 break; 972 /* FALLTHROUGH */ 973 case IEEE80211_S_AUTH: 974 /* reset state to handle reassociations correctly */ 975 sc->config.associd = 0; 976 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 977 978 if ((error = wpi_auth(sc)) != 0) { 979 aprint_error_dev(sc->sc_dev, 980 "could not send authentication request\n"); 981 return error; 982 } 983 break; 984 985 case IEEE80211_S_RUN: 986 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 987 /* link LED blinks while monitoring */ 988 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 989 break; 990 } 991 ni = ic->ic_bss; 992 993 if (ic->ic_opmode != IEEE80211_M_STA) { 994 (void) wpi_auth(sc); /* XXX */ 995 wpi_setup_beacon(sc, ni); 996 } 997 998 wpi_enable_tsf(sc, ni); 999 1000 /* update adapter's configuration */ 1001 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 1002 /* short preamble/slot time are negotiated when associating */ 1003 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 1004 WPI_CONFIG_SHSLOT); 1005 if (ic->ic_flags & IEEE80211_F_SHSLOT) 1006 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 1007 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1008 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 1009 sc->config.filter |= htole32(WPI_FILTER_BSS); 1010 if (ic->ic_opmode != IEEE80211_M_STA) 1011 sc->config.filter |= htole32(WPI_FILTER_BEACON); 1012 1013 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 1014 1015 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 1016 sc->config.flags)); 1017 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 1018 sizeof (struct wpi_config), 1); 1019 if (error != 0) { 1020 aprint_error_dev(sc->sc_dev, 1021 "could not update configuration\n"); 1022 return error; 1023 } 1024 1025 /* configuration has changed, set Tx power accordingly */ 1026 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 1)) != 0) { 1027 aprint_error_dev(sc->sc_dev, 1028 "could not set Tx power\n"); 1029 return error; 1030 } 1031 1032 if (ic->ic_opmode == IEEE80211_M_STA) { 1033 /* fake a join to init the tx rate */ 1034 wpi_newassoc(ni, 1); 1035 } 1036 1037 /* start periodic calibration timer */ 1038 sc->calib_cnt = 0; 1039 callout_schedule(&sc->calib_to, hz/2); 1040 1041 /* link LED always on while associated */ 1042 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 1043 break; 1044 1045 case IEEE80211_S_INIT: 1046 sc->is_scanning = false; 1047 break; 1048 } 1049 1050 return sc->sc_newstate(ic, nstate, arg); 1051 } 1052 1053 /* 1054 * Grab exclusive access to NIC memory. 1055 */ 1056 static void 1057 wpi_mem_lock(struct wpi_softc *sc) 1058 { 1059 uint32_t tmp; 1060 int ntries; 1061 1062 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1063 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1064 1065 /* spin until we actually get the lock */ 1066 for (ntries = 0; ntries < 1000; ntries++) { 1067 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1068 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1069 break; 1070 DELAY(10); 1071 } 1072 if (ntries == 1000) 1073 aprint_error_dev(sc->sc_dev, "could not lock memory\n"); 1074 } 1075 1076 /* 1077 * Release lock on NIC memory. 1078 */ 1079 static void 1080 wpi_mem_unlock(struct wpi_softc *sc) 1081 { 1082 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1083 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1084 } 1085 1086 static uint32_t 1087 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1088 { 1089 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1090 return WPI_READ(sc, WPI_READ_MEM_DATA); 1091 } 1092 1093 static void 1094 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1095 { 1096 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1097 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1098 } 1099 1100 static void 1101 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1102 const uint32_t *data, int wlen) 1103 { 1104 for (; wlen > 0; wlen--, data++, addr += 4) 1105 wpi_mem_write(sc, addr, *data); 1106 } 1107 1108 /* 1109 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1110 * instead of using the traditional bit-bang method. 1111 */ 1112 static int 1113 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1114 { 1115 uint8_t *out = data; 1116 uint32_t val; 1117 int ntries; 1118 1119 wpi_mem_lock(sc); 1120 for (; len > 0; len -= 2, addr++) { 1121 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1122 1123 for (ntries = 0; ntries < 10; ntries++) { 1124 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1125 WPI_EEPROM_READY) 1126 break; 1127 DELAY(5); 1128 } 1129 if (ntries == 10) { 1130 aprint_error_dev(sc->sc_dev, "could not read EEPROM\n"); 1131 return ETIMEDOUT; 1132 } 1133 *out++ = val >> 16; 1134 if (len > 1) 1135 *out++ = val >> 24; 1136 } 1137 wpi_mem_unlock(sc); 1138 1139 return 0; 1140 } 1141 1142 /* 1143 * The firmware boot code is small and is intended to be copied directly into 1144 * the NIC internal memory. 1145 */ 1146 int 1147 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1148 { 1149 int ntries; 1150 1151 size /= sizeof (uint32_t); 1152 1153 wpi_mem_lock(sc); 1154 1155 /* copy microcode image into NIC memory */ 1156 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1157 (const uint32_t *)ucode, size); 1158 1159 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1160 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1161 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1162 1163 /* run microcode */ 1164 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1165 1166 /* wait for transfer to complete */ 1167 for (ntries = 0; ntries < 1000; ntries++) { 1168 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1169 break; 1170 DELAY(10); 1171 } 1172 if (ntries == 1000) { 1173 wpi_mem_unlock(sc); 1174 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1175 return ETIMEDOUT; 1176 } 1177 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1178 1179 wpi_mem_unlock(sc); 1180 1181 return 0; 1182 } 1183 1184 static int 1185 wpi_cache_firmware(struct wpi_softc *sc) 1186 { 1187 const char *const fwname = wpi_firmware_name; 1188 firmware_handle_t fw; 1189 int error; 1190 1191 /* sc is used here only to report error messages. */ 1192 1193 mutex_enter(&wpi_firmware_mutex); 1194 1195 if (wpi_firmware_users == SIZE_MAX) { 1196 mutex_exit(&wpi_firmware_mutex); 1197 return ENFILE; /* Too many of something in the system... */ 1198 } 1199 if (wpi_firmware_users++) { 1200 KASSERT(wpi_firmware_image != NULL); 1201 KASSERT(wpi_firmware_size > 0); 1202 mutex_exit(&wpi_firmware_mutex); 1203 return 0; /* Already good to go. */ 1204 } 1205 1206 KASSERT(wpi_firmware_image == NULL); 1207 KASSERT(wpi_firmware_size == 0); 1208 1209 /* load firmware image from disk */ 1210 if ((error = firmware_open("if_wpi", fwname, &fw)) != 0) { 1211 aprint_error_dev(sc->sc_dev, 1212 "could not open firmware file %s: %d\n", fwname, error); 1213 goto fail0; 1214 } 1215 1216 wpi_firmware_size = firmware_get_size(fw); 1217 1218 if (wpi_firmware_size > sizeof (struct wpi_firmware_hdr) + 1219 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ + 1220 WPI_FW_INIT_TEXT_MAXSZ + WPI_FW_INIT_DATA_MAXSZ + 1221 WPI_FW_BOOT_TEXT_MAXSZ) { 1222 aprint_error_dev(sc->sc_dev, 1223 "firmware file %s too large: %zu bytes\n", 1224 fwname, wpi_firmware_size); 1225 error = EFBIG; 1226 goto fail1; 1227 } 1228 1229 if (wpi_firmware_size < sizeof (struct wpi_firmware_hdr)) { 1230 aprint_error_dev(sc->sc_dev, 1231 "firmware file %s too small: %zu bytes\n", 1232 fwname, wpi_firmware_size); 1233 error = EINVAL; 1234 goto fail1; 1235 } 1236 1237 wpi_firmware_image = firmware_malloc(wpi_firmware_size); 1238 if (wpi_firmware_image == NULL) { 1239 aprint_error_dev(sc->sc_dev, 1240 "not enough memory for firmware file %s\n", fwname); 1241 error = ENOMEM; 1242 goto fail1; 1243 } 1244 1245 error = firmware_read(fw, 0, wpi_firmware_image, wpi_firmware_size); 1246 if (error != 0) { 1247 aprint_error_dev(sc->sc_dev, 1248 "error reading firmware file %s: %d\n", fwname, error); 1249 goto fail2; 1250 } 1251 1252 /* Success! */ 1253 firmware_close(fw); 1254 mutex_exit(&wpi_firmware_mutex); 1255 return 0; 1256 1257 fail2: 1258 firmware_free(wpi_firmware_image, wpi_firmware_size); 1259 wpi_firmware_image = NULL; 1260 fail1: 1261 wpi_firmware_size = 0; 1262 firmware_close(fw); 1263 fail0: 1264 KASSERT(wpi_firmware_users == 1); 1265 wpi_firmware_users = 0; 1266 KASSERT(wpi_firmware_image == NULL); 1267 KASSERT(wpi_firmware_size == 0); 1268 1269 mutex_exit(&wpi_firmware_mutex); 1270 return error; 1271 } 1272 1273 static void 1274 wpi_release_firmware(void) 1275 { 1276 1277 mutex_enter(&wpi_firmware_mutex); 1278 1279 KASSERT(wpi_firmware_users > 0); 1280 KASSERT(wpi_firmware_image != NULL); 1281 KASSERT(wpi_firmware_size != 0); 1282 1283 if (--wpi_firmware_users == 0) { 1284 firmware_free(wpi_firmware_image, wpi_firmware_size); 1285 wpi_firmware_image = NULL; 1286 wpi_firmware_size = 0; 1287 } 1288 1289 mutex_exit(&wpi_firmware_mutex); 1290 } 1291 1292 static int 1293 wpi_load_firmware(struct wpi_softc *sc) 1294 { 1295 struct wpi_dma_info *dma = &sc->fw_dma; 1296 struct wpi_firmware_hdr hdr; 1297 const uint8_t *init_text, *init_data, *main_text, *main_data; 1298 const uint8_t *boot_text; 1299 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1300 uint32_t boot_textsz; 1301 size_t size; 1302 int error; 1303 1304 if (!sc->fw_used) { 1305 if ((error = wpi_cache_firmware(sc)) != 0) 1306 return error; 1307 sc->fw_used = true; 1308 } 1309 1310 KASSERT(sc->fw_used); 1311 KASSERT(wpi_firmware_image != NULL); 1312 KASSERT(wpi_firmware_size > sizeof(hdr)); 1313 1314 memcpy(&hdr, wpi_firmware_image, sizeof(hdr)); 1315 1316 main_textsz = le32toh(hdr.main_textsz); 1317 main_datasz = le32toh(hdr.main_datasz); 1318 init_textsz = le32toh(hdr.init_textsz); 1319 init_datasz = le32toh(hdr.init_datasz); 1320 boot_textsz = le32toh(hdr.boot_textsz); 1321 1322 /* sanity-check firmware segments sizes */ 1323 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1324 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1325 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1326 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1327 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1328 (boot_textsz & 3) != 0) { 1329 aprint_error_dev(sc->sc_dev, "invalid firmware header\n"); 1330 error = EINVAL; 1331 goto free_firmware; 1332 } 1333 1334 /* check that all firmware segments are present */ 1335 size = sizeof (struct wpi_firmware_hdr) + main_textsz + 1336 main_datasz + init_textsz + init_datasz + boot_textsz; 1337 if (wpi_firmware_size < size) { 1338 aprint_error_dev(sc->sc_dev, 1339 "firmware file truncated: %zu bytes, expected %zu bytes\n", 1340 wpi_firmware_size, size); 1341 error = EINVAL; 1342 goto free_firmware; 1343 } 1344 1345 /* get pointers to firmware segments */ 1346 main_text = wpi_firmware_image + sizeof (struct wpi_firmware_hdr); 1347 main_data = main_text + main_textsz; 1348 init_text = main_data + main_datasz; 1349 init_data = init_text + init_textsz; 1350 boot_text = init_data + init_datasz; 1351 1352 /* copy initialization images into pre-allocated DMA-safe memory */ 1353 memcpy(dma->vaddr, init_data, init_datasz); 1354 memcpy((char *)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, 1355 init_textsz); 1356 1357 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 1358 1359 /* tell adapter where to find initialization images */ 1360 wpi_mem_lock(sc); 1361 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1362 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1363 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1364 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1365 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1366 wpi_mem_unlock(sc); 1367 1368 /* load firmware boot code */ 1369 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1370 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1371 return error; 1372 } 1373 1374 /* now press "execute" ;-) */ 1375 WPI_WRITE(sc, WPI_RESET, 0); 1376 1377 /* wait at most one second for first alive notification */ 1378 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1379 /* this isn't what was supposed to happen.. */ 1380 aprint_error_dev(sc->sc_dev, 1381 "timeout waiting for adapter to initialize\n"); 1382 } 1383 1384 /* copy runtime images into pre-allocated DMA-safe memory */ 1385 memcpy(dma->vaddr, main_data, main_datasz); 1386 memcpy((char *)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, 1387 main_textsz); 1388 1389 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 1390 1391 /* tell adapter where to find runtime images */ 1392 wpi_mem_lock(sc); 1393 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1394 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1395 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1396 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1397 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1398 wpi_mem_unlock(sc); 1399 1400 /* wait at most one second for second alive notification */ 1401 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1402 /* this isn't what was supposed to happen.. */ 1403 aprint_error_dev(sc->sc_dev, 1404 "timeout waiting for adapter to initialize\n"); 1405 } 1406 1407 return error; 1408 1409 free_firmware: 1410 sc->fw_used = false; 1411 wpi_release_firmware(); 1412 return error; 1413 } 1414 1415 static void 1416 wpi_calib_timeout(void *arg) 1417 { 1418 struct wpi_softc *sc = arg; 1419 struct ieee80211com *ic = &sc->sc_ic; 1420 int temp, s; 1421 1422 /* automatic rate control triggered every 500ms */ 1423 if (ic->ic_fixed_rate == -1) { 1424 s = splnet(); 1425 if (ic->ic_opmode == IEEE80211_M_STA) 1426 wpi_iter_func(sc, ic->ic_bss); 1427 else 1428 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1429 splx(s); 1430 } 1431 1432 /* update sensor data */ 1433 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1434 1435 /* automatic power calibration every 60s */ 1436 if (++sc->calib_cnt >= 120) { 1437 wpi_power_calibration(sc, temp); 1438 sc->calib_cnt = 0; 1439 } 1440 1441 callout_schedule(&sc->calib_to, hz/2); 1442 } 1443 1444 static void 1445 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1446 { 1447 struct wpi_softc *sc = arg; 1448 struct wpi_node *wn = (struct wpi_node *)ni; 1449 1450 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1451 } 1452 1453 /* 1454 * This function is called periodically (every 60 seconds) to adjust output 1455 * power to temperature changes. 1456 */ 1457 void 1458 wpi_power_calibration(struct wpi_softc *sc, int temp) 1459 { 1460 /* sanity-check read value */ 1461 if (temp < -260 || temp > 25) { 1462 /* this can't be correct, ignore */ 1463 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1464 return; 1465 } 1466 1467 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1468 1469 /* adjust Tx power if need be */ 1470 if (abs(temp - sc->temp) <= 6) 1471 return; 1472 1473 sc->temp = temp; 1474 1475 if (wpi_set_txpower(sc, sc->sc_ic.ic_curchan, 1) != 0) { 1476 /* just warn, too bad for the automatic calibration... */ 1477 aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n"); 1478 } 1479 } 1480 1481 static void 1482 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1483 struct wpi_rx_data *data) 1484 { 1485 struct ieee80211com *ic = &sc->sc_ic; 1486 struct ifnet *ifp = ic->ic_ifp; 1487 struct wpi_rx_ring *ring = &sc->rxq; 1488 struct wpi_rx_stat *stat; 1489 struct wpi_rx_head *head; 1490 struct wpi_rx_tail *tail; 1491 struct wpi_rbuf *rbuf; 1492 struct ieee80211_frame *wh; 1493 struct ieee80211_node *ni; 1494 struct mbuf *m, *mnew; 1495 int data_off, error, s; 1496 1497 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1498 BUS_DMASYNC_POSTREAD); 1499 stat = (struct wpi_rx_stat *)(desc + 1); 1500 1501 if (stat->len > WPI_STAT_MAXLEN) { 1502 aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n"); 1503 ifp->if_ierrors++; 1504 return; 1505 } 1506 1507 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1508 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1509 1510 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1511 "chan=%d tstamp=%" PRIu64 "\n", ring->cur, le32toh(desc->len), 1512 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1513 le64toh(tail->tstamp))); 1514 1515 /* 1516 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1517 * to radiotap in monitor mode). 1518 */ 1519 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1520 DPRINTF(("rx tail flags error %x\n", 1521 le32toh(tail->flags))); 1522 ifp->if_ierrors++; 1523 return; 1524 } 1525 1526 /* Compute where are the useful datas */ 1527 data_off = (char*)(head + 1) - mtod(data->m, char*); 1528 1529 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1530 if (mnew == NULL) { 1531 ifp->if_ierrors++; 1532 return; 1533 } 1534 1535 rbuf = wpi_alloc_rbuf(sc); 1536 if (rbuf == NULL) { 1537 m_freem(mnew); 1538 ifp->if_ierrors++; 1539 return; 1540 } 1541 1542 /* attach Rx buffer to mbuf */ 1543 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1544 rbuf); 1545 mnew->m_flags |= M_EXT_RW; 1546 1547 bus_dmamap_unload(sc->sc_dmat, data->map); 1548 1549 error = bus_dmamap_load(sc->sc_dmat, data->map, 1550 mtod(mnew, void *), WPI_RBUF_SIZE, NULL, 1551 BUS_DMA_NOWAIT | BUS_DMA_READ); 1552 if (error) { 1553 device_printf(sc->sc_dev, 1554 "couldn't load rx mbuf: %d\n", error); 1555 m_freem(mnew); 1556 ifp->if_ierrors++; 1557 1558 error = bus_dmamap_load(sc->sc_dmat, data->map, 1559 mtod(data->m, void *), WPI_RBUF_SIZE, NULL, 1560 BUS_DMA_NOWAIT | BUS_DMA_READ); 1561 if (error) 1562 panic("%s: bus_dmamap_load failed: %d\n", 1563 device_xname(sc->sc_dev), error); 1564 return; 1565 } 1566 1567 /* new mbuf loaded successfully */ 1568 m = data->m; 1569 data->m = mnew; 1570 1571 /* update Rx descriptor */ 1572 ring->desc[ring->cur] = htole32(rbuf->paddr); 1573 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 1574 ring->desc_dma.size, 1575 BUS_DMASYNC_PREWRITE); 1576 1577 m->m_data = (char*)m->m_data + data_off; 1578 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1579 1580 /* finalize mbuf */ 1581 m_set_rcvif(m, ifp); 1582 1583 s = splnet(); 1584 1585 if (sc->sc_drvbpf != NULL) { 1586 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1587 1588 tap->wr_flags = 0; 1589 tap->wr_chan_freq = 1590 htole16(ic->ic_channels[head->chan].ic_freq); 1591 tap->wr_chan_flags = 1592 htole16(ic->ic_channels[head->chan].ic_flags); 1593 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1594 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1595 tap->wr_tsft = tail->tstamp; 1596 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1597 switch (head->rate) { 1598 /* CCK rates */ 1599 case 10: tap->wr_rate = 2; break; 1600 case 20: tap->wr_rate = 4; break; 1601 case 55: tap->wr_rate = 11; break; 1602 case 110: tap->wr_rate = 22; break; 1603 /* OFDM rates */ 1604 case 0xd: tap->wr_rate = 12; break; 1605 case 0xf: tap->wr_rate = 18; break; 1606 case 0x5: tap->wr_rate = 24; break; 1607 case 0x7: tap->wr_rate = 36; break; 1608 case 0x9: tap->wr_rate = 48; break; 1609 case 0xb: tap->wr_rate = 72; break; 1610 case 0x1: tap->wr_rate = 96; break; 1611 case 0x3: tap->wr_rate = 108; break; 1612 /* unknown rate: should not happen */ 1613 default: tap->wr_rate = 0; 1614 } 1615 if (le16toh(head->flags) & 0x4) 1616 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1617 1618 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m, BPF_D_IN); 1619 } 1620 1621 /* grab a reference to the source node */ 1622 wh = mtod(m, struct ieee80211_frame *); 1623 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1624 1625 /* send the frame to the 802.11 layer */ 1626 ieee80211_input(ic, m, ni, stat->rssi, 0); 1627 1628 /* release node reference */ 1629 ieee80211_free_node(ni); 1630 1631 splx(s); 1632 } 1633 1634 static void 1635 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1636 { 1637 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1638 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1639 struct wpi_tx_data *data = &ring->data[desc->idx]; 1640 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1641 struct wpi_node *wn = (struct wpi_node *)data->ni; 1642 int s; 1643 1644 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1645 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1646 stat->nkill, stat->rate, le32toh(stat->duration), 1647 le32toh(stat->status))); 1648 1649 s = splnet(); 1650 1651 /* 1652 * Update rate control statistics for the node. 1653 * XXX we should not count mgmt frames since they're always sent at 1654 * the lowest available bit-rate. 1655 */ 1656 wn->amn.amn_txcnt++; 1657 if (stat->ntries > 0) { 1658 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1659 wn->amn.amn_retrycnt++; 1660 } 1661 1662 if ((le32toh(stat->status) & 0xff) != 1) 1663 ifp->if_oerrors++; 1664 else 1665 ifp->if_opackets++; 1666 1667 bus_dmamap_unload(sc->sc_dmat, data->map); 1668 m_freem(data->m); 1669 data->m = NULL; 1670 ieee80211_free_node(data->ni); 1671 data->ni = NULL; 1672 1673 ring->queued--; 1674 1675 sc->sc_tx_timer = 0; 1676 ifp->if_flags &= ~IFF_OACTIVE; 1677 wpi_start(ifp); /* in softint */ 1678 1679 splx(s); 1680 } 1681 1682 static void 1683 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1684 { 1685 struct wpi_tx_ring *ring = &sc->cmdq; 1686 struct wpi_tx_data *data; 1687 1688 if ((desc->qid & 7) != 4) 1689 return; /* not a command ack */ 1690 1691 data = &ring->data[desc->idx]; 1692 1693 /* if the command was mapped in a mbuf, free it */ 1694 if (data->m != NULL) { 1695 bus_dmamap_unload(sc->sc_dmat, data->map); 1696 m_freem(data->m); 1697 data->m = NULL; 1698 } 1699 1700 wakeup(&ring->cmd[desc->idx]); 1701 } 1702 1703 static void 1704 wpi_notif_intr(struct wpi_softc *sc) 1705 { 1706 struct ieee80211com *ic = &sc->sc_ic; 1707 struct ifnet *ifp = ic->ic_ifp; 1708 uint32_t hw; 1709 int s; 1710 1711 bus_dmamap_sync(sc->sc_dmat, sc->shared_dma.map, 0, 1712 sizeof(struct wpi_shared), BUS_DMASYNC_POSTREAD); 1713 1714 hw = le32toh(sc->shared->next); 1715 while (sc->rxq.cur != hw) { 1716 struct wpi_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 1717 struct wpi_rx_desc *desc; 1718 1719 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1720 BUS_DMASYNC_POSTREAD); 1721 desc = mtod(data->m, struct wpi_rx_desc *); 1722 1723 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1724 "len=%d\n", desc->qid, desc->idx, desc->flags, 1725 desc->type, le32toh(desc->len))); 1726 1727 if (!(desc->qid & 0x80)) /* reply to a command */ 1728 wpi_cmd_intr(sc, desc); 1729 1730 switch (desc->type) { 1731 case WPI_RX_DONE: 1732 /* a 802.11 frame was received */ 1733 wpi_rx_intr(sc, desc, data); 1734 break; 1735 1736 case WPI_TX_DONE: 1737 /* a 802.11 frame has been transmitted */ 1738 wpi_tx_intr(sc, desc); 1739 break; 1740 1741 case WPI_UC_READY: 1742 { 1743 struct wpi_ucode_info *uc = 1744 (struct wpi_ucode_info *)(desc + 1); 1745 1746 /* the microcontroller is ready */ 1747 DPRINTF(("microcode alive notification version %x " 1748 "alive %x\n", le32toh(uc->version), 1749 le32toh(uc->valid))); 1750 1751 if (le32toh(uc->valid) != 1) { 1752 aprint_error_dev(sc->sc_dev, 1753 "microcontroller initialization failed\n"); 1754 } 1755 break; 1756 } 1757 case WPI_STATE_CHANGED: 1758 { 1759 uint32_t *status = (uint32_t *)(desc + 1); 1760 1761 /* enabled/disabled notification */ 1762 DPRINTF(("state changed to %x\n", le32toh(*status))); 1763 1764 if (le32toh(*status) & 1) { 1765 s = splnet(); 1766 /* the radio button has to be pushed */ 1767 /* wake up thread to signal powerd */ 1768 cv_signal(&sc->sc_rsw_cv); 1769 aprint_error_dev(sc->sc_dev, 1770 "Radio transmitter is off\n"); 1771 /* turn the interface down */ 1772 ifp->if_flags &= ~IFF_UP; 1773 wpi_stop(ifp, 1); 1774 splx(s); 1775 return; /* no further processing */ 1776 } 1777 break; 1778 } 1779 case WPI_START_SCAN: 1780 { 1781 #if 0 1782 struct wpi_start_scan *scan = 1783 (struct wpi_start_scan *)(desc + 1); 1784 1785 DPRINTFN(2, ("scanning channel %d status %x\n", 1786 scan->chan, le32toh(scan->status))); 1787 1788 /* fix current channel */ 1789 ic->ic_curchan = &ic->ic_channels[scan->chan]; 1790 #endif 1791 break; 1792 } 1793 case WPI_STOP_SCAN: 1794 { 1795 #ifdef WPI_DEBUG 1796 struct wpi_stop_scan *scan = 1797 (struct wpi_stop_scan *)(desc + 1); 1798 #endif 1799 1800 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1801 scan->nchan, scan->status, scan->chan)); 1802 1803 s = splnet(); 1804 sc->is_scanning = false; 1805 if (ic->ic_state == IEEE80211_S_SCAN) 1806 ieee80211_next_scan(ic); 1807 splx(s); 1808 break; 1809 } 1810 } 1811 1812 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1813 } 1814 1815 /* tell the firmware what we have processed */ 1816 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1817 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1818 } 1819 1820 static int 1821 wpi_intr(void *arg) 1822 { 1823 struct wpi_softc *sc = arg; 1824 uint32_t r; 1825 1826 r = WPI_READ(sc, WPI_INTR); 1827 if (r == 0 || r == 0xffffffff) 1828 return 0; /* not for us */ 1829 1830 DPRINTFN(6, ("interrupt reg %x\n", r)); 1831 1832 /* disable interrupts */ 1833 WPI_WRITE(sc, WPI_MASK, 0); 1834 1835 softint_schedule(sc->sc_soft_ih); 1836 return 1; 1837 } 1838 1839 static void 1840 wpi_softintr(void *arg) 1841 { 1842 struct wpi_softc *sc = arg; 1843 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1844 uint32_t r; 1845 1846 r = WPI_READ(sc, WPI_INTR); 1847 if (r == 0 || r == 0xffffffff) 1848 goto out; 1849 1850 /* ack interrupts */ 1851 WPI_WRITE(sc, WPI_INTR, r); 1852 1853 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1854 /* SYSTEM FAILURE, SYSTEM FAILURE */ 1855 aprint_error_dev(sc->sc_dev, "fatal firmware error\n"); 1856 ifp->if_flags &= ~IFF_UP; 1857 wpi_stop(ifp, 1); 1858 return; 1859 } 1860 1861 if (r & WPI_RX_INTR) 1862 wpi_notif_intr(sc); 1863 1864 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1865 wakeup(sc); 1866 1867 out: 1868 /* re-enable interrupts */ 1869 if (ifp->if_flags & IFF_UP) 1870 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1871 } 1872 1873 static uint8_t 1874 wpi_plcp_signal(int rate) 1875 { 1876 switch (rate) { 1877 /* CCK rates (returned values are device-dependent) */ 1878 case 2: return 10; 1879 case 4: return 20; 1880 case 11: return 55; 1881 case 22: return 110; 1882 1883 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1884 /* R1-R4, (u)ral is R4-R1 */ 1885 case 12: return 0xd; 1886 case 18: return 0xf; 1887 case 24: return 0x5; 1888 case 36: return 0x7; 1889 case 48: return 0x9; 1890 case 72: return 0xb; 1891 case 96: return 0x1; 1892 case 108: return 0x3; 1893 1894 /* unsupported rates (should not get there) */ 1895 default: return 0; 1896 } 1897 } 1898 1899 /* quickly determine if a given rate is CCK or OFDM */ 1900 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1901 1902 static int 1903 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1904 int ac) 1905 { 1906 struct ieee80211com *ic = &sc->sc_ic; 1907 struct wpi_tx_ring *ring = &sc->txq[ac]; 1908 struct wpi_tx_desc *desc; 1909 struct wpi_tx_data *data; 1910 struct wpi_tx_cmd *cmd; 1911 struct wpi_cmd_data *tx; 1912 struct ieee80211_frame *wh; 1913 struct ieee80211_key *k; 1914 const struct chanAccParams *cap; 1915 struct mbuf *mnew; 1916 int i, rate, error, hdrlen, noack = 0; 1917 1918 desc = &ring->desc[ring->cur]; 1919 data = &ring->data[ring->cur]; 1920 1921 wh = mtod(m0, struct ieee80211_frame *); 1922 1923 if (ieee80211_has_qos(wh)) { 1924 cap = &ic->ic_wme.wme_chanParams; 1925 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1926 } 1927 1928 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1929 k = ieee80211_crypto_encap(ic, ni, m0); 1930 if (k == NULL) { 1931 m_freem(m0); 1932 return ENOBUFS; 1933 } 1934 1935 /* packet header may have moved, reset our local pointer */ 1936 wh = mtod(m0, struct ieee80211_frame *); 1937 } 1938 1939 hdrlen = ieee80211_anyhdrsize(wh); 1940 1941 /* pickup a rate */ 1942 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1943 IEEE80211_FC0_TYPE_MGT) { 1944 /* mgmt frames are sent at the lowest available bit-rate */ 1945 rate = ni->ni_rates.rs_rates[0]; 1946 } else { 1947 if (ic->ic_fixed_rate != -1) { 1948 rate = ic->ic_sup_rates[ic->ic_curmode]. 1949 rs_rates[ic->ic_fixed_rate]; 1950 } else 1951 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1952 } 1953 rate &= IEEE80211_RATE_VAL; 1954 1955 if (sc->sc_drvbpf != NULL) { 1956 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1957 1958 tap->wt_flags = 0; 1959 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1960 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1961 tap->wt_rate = rate; 1962 tap->wt_hwqueue = ac; 1963 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1964 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1965 1966 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0, BPF_D_OUT); 1967 } 1968 1969 cmd = &ring->cmd[ring->cur]; 1970 cmd->code = WPI_CMD_TX_DATA; 1971 cmd->flags = 0; 1972 cmd->qid = ring->qid; 1973 cmd->idx = ring->cur; 1974 1975 tx = (struct wpi_cmd_data *)cmd->data; 1976 /* no need to zero tx, all fields are reinitialized here */ 1977 tx->flags = 0; 1978 1979 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1980 tx->flags |= htole32(WPI_TX_NEED_ACK); 1981 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1982 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1983 1984 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1985 1986 /* retrieve destination node's id */ 1987 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1988 WPI_ID_BSS; 1989 1990 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1991 IEEE80211_FC0_TYPE_MGT) { 1992 /* tell h/w to set timestamp in probe responses */ 1993 if ((wh->i_fc[0] & 1994 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1995 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1996 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1997 1998 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1999 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 2000 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 2001 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 2002 tx->timeout = htole16(3); 2003 else 2004 tx->timeout = htole16(2); 2005 } else 2006 tx->timeout = htole16(0); 2007 2008 tx->rate = wpi_plcp_signal(rate); 2009 2010 /* be very persistant at sending frames out */ 2011 tx->rts_ntries = 7; 2012 tx->data_ntries = 15; 2013 2014 tx->ofdm_mask = 0xff; 2015 tx->cck_mask = 0x0f; 2016 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 2017 2018 tx->len = htole16(m0->m_pkthdr.len); 2019 2020 /* save and trim IEEE802.11 header */ 2021 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 2022 m_adj(m0, hdrlen); 2023 2024 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2025 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 2026 if (error != 0 && error != EFBIG) { 2027 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 2028 error); 2029 m_freem(m0); 2030 return error; 2031 } 2032 if (error != 0) { 2033 /* too many fragments, linearize */ 2034 2035 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 2036 if (mnew == NULL) { 2037 m_freem(m0); 2038 return ENOMEM; 2039 } 2040 m_copy_pkthdr(mnew, m0); 2041 if (m0->m_pkthdr.len > MHLEN) { 2042 MCLGET(mnew, M_DONTWAIT); 2043 if (!(mnew->m_flags & M_EXT)) { 2044 m_freem(m0); 2045 m_freem(mnew); 2046 return ENOMEM; 2047 } 2048 } 2049 2050 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 2051 m_freem(m0); 2052 mnew->m_len = mnew->m_pkthdr.len; 2053 m0 = mnew; 2054 2055 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2056 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 2057 if (error != 0) { 2058 aprint_error_dev(sc->sc_dev, 2059 "could not map mbuf (error %d)\n", error); 2060 m_freem(m0); 2061 return error; 2062 } 2063 } 2064 2065 data->m = m0; 2066 data->ni = ni; 2067 2068 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 2069 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 2070 2071 /* first scatter/gather segment is used by the tx data command */ 2072 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2073 (1 + data->map->dm_nsegs) << 24); 2074 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2075 ring->cur * sizeof (struct wpi_tx_cmd)); 2076 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 2077 ((hdrlen + 3) & ~3)); 2078 for (i = 1; i <= data->map->dm_nsegs; i++) { 2079 desc->segs[i].addr = 2080 htole32(data->map->dm_segs[i - 1].ds_addr); 2081 desc->segs[i].len = 2082 htole32(data->map->dm_segs[i - 1].ds_len); 2083 } 2084 2085 ring->queued++; 2086 2087 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 2088 data->map->dm_mapsize, 2089 BUS_DMASYNC_PREWRITE); 2090 bus_dmamap_sync(sc->sc_dmat, ring->cmd_dma.map, 0, 2091 ring->cmd_dma.size, 2092 BUS_DMASYNC_PREWRITE); 2093 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2094 ring->desc_dma.size, 2095 BUS_DMASYNC_PREWRITE); 2096 2097 /* kick ring */ 2098 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2099 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2100 2101 return 0; 2102 } 2103 2104 static void 2105 wpi_start(struct ifnet *ifp) 2106 { 2107 struct wpi_softc *sc = ifp->if_softc; 2108 struct ieee80211com *ic = &sc->sc_ic; 2109 struct ieee80211_node *ni; 2110 struct ether_header *eh; 2111 struct mbuf *m0; 2112 int ac; 2113 2114 /* 2115 * net80211 may still try to send management frames even if the 2116 * IFF_RUNNING flag is not set... 2117 */ 2118 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2119 return; 2120 2121 for (;;) { 2122 IF_DEQUEUE(&ic->ic_mgtq, m0); 2123 if (m0 != NULL) { 2124 2125 ni = M_GETCTX(m0, struct ieee80211_node *); 2126 M_CLEARCTX(m0); 2127 2128 /* management frames go into ring 0 */ 2129 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2130 ifp->if_oerrors++; 2131 continue; 2132 } 2133 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 2134 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 2135 ifp->if_oerrors++; 2136 break; 2137 } 2138 } else { 2139 if (ic->ic_state != IEEE80211_S_RUN) 2140 break; 2141 IFQ_POLL(&ifp->if_snd, m0); 2142 if (m0 == NULL) 2143 break; 2144 2145 if (m0->m_len < sizeof (*eh) && 2146 (m0 = m_pullup(m0, sizeof (*eh))) == NULL) { 2147 ifp->if_oerrors++; 2148 continue; 2149 } 2150 eh = mtod(m0, struct ether_header *); 2151 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2152 if (ni == NULL) { 2153 m_freem(m0); 2154 ifp->if_oerrors++; 2155 continue; 2156 } 2157 2158 /* classify mbuf so we can find which tx ring to use */ 2159 if (ieee80211_classify(ic, m0, ni) != 0) { 2160 m_freem(m0); 2161 ieee80211_free_node(ni); 2162 ifp->if_oerrors++; 2163 continue; 2164 } 2165 2166 /* no QoS encapsulation for EAPOL frames */ 2167 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2168 M_WME_GETAC(m0) : WME_AC_BE; 2169 2170 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2171 /* there is no place left in this ring */ 2172 ifp->if_flags |= IFF_OACTIVE; 2173 break; 2174 } 2175 IFQ_DEQUEUE(&ifp->if_snd, m0); 2176 bpf_mtap(ifp, m0, BPF_D_OUT); 2177 m0 = ieee80211_encap(ic, m0, ni); 2178 if (m0 == NULL) { 2179 ieee80211_free_node(ni); 2180 ifp->if_oerrors++; 2181 continue; 2182 } 2183 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 2184 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2185 ieee80211_free_node(ni); 2186 ifp->if_oerrors++; 2187 break; 2188 } 2189 } 2190 2191 sc->sc_tx_timer = 5; 2192 ifp->if_timer = 1; 2193 } 2194 } 2195 2196 static void 2197 wpi_watchdog(struct ifnet *ifp) 2198 { 2199 struct wpi_softc *sc = ifp->if_softc; 2200 2201 ifp->if_timer = 0; 2202 2203 if (sc->sc_tx_timer > 0) { 2204 if (--sc->sc_tx_timer == 0) { 2205 aprint_error_dev(sc->sc_dev, "device timeout\n"); 2206 ifp->if_flags &= ~IFF_UP; 2207 wpi_stop(ifp, 1); 2208 ifp->if_oerrors++; 2209 return; 2210 } 2211 ifp->if_timer = 1; 2212 } 2213 2214 ieee80211_watchdog(&sc->sc_ic); 2215 } 2216 2217 static int 2218 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2219 { 2220 #define IS_RUNNING(ifp) \ 2221 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2222 2223 struct wpi_softc *sc = ifp->if_softc; 2224 struct ieee80211com *ic = &sc->sc_ic; 2225 int s, error = 0; 2226 2227 s = splnet(); 2228 2229 switch (cmd) { 2230 case SIOCSIFFLAGS: 2231 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 2232 break; 2233 if (ifp->if_flags & IFF_UP) { 2234 if (!(ifp->if_flags & IFF_RUNNING)) 2235 wpi_init(ifp); 2236 } else { 2237 if (ifp->if_flags & IFF_RUNNING) 2238 wpi_stop(ifp, 1); 2239 } 2240 break; 2241 2242 case SIOCADDMULTI: 2243 case SIOCDELMULTI: 2244 /* XXX no h/w multicast filter? --dyoung */ 2245 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2246 /* setup multicast filter, etc */ 2247 error = 0; 2248 } 2249 break; 2250 2251 default: 2252 error = ieee80211_ioctl(ic, cmd, data); 2253 } 2254 2255 if (error == ENETRESET) { 2256 if (IS_RUNNING(ifp) && 2257 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2258 wpi_init(ifp); 2259 error = 0; 2260 } 2261 2262 splx(s); 2263 return error; 2264 2265 #undef IS_RUNNING 2266 } 2267 2268 /* 2269 * Extract various information from EEPROM. 2270 */ 2271 static void 2272 wpi_read_eeprom(struct wpi_softc *sc) 2273 { 2274 struct ieee80211com *ic = &sc->sc_ic; 2275 char domain[4]; 2276 int i; 2277 2278 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2279 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2280 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2281 2282 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2283 sc->type)); 2284 2285 /* read and print regulatory domain */ 2286 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2287 aprint_normal_dev(sc->sc_dev, "%.4s", domain); 2288 2289 /* read and print MAC address */ 2290 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2291 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2292 2293 /* read the list of authorized channels */ 2294 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2295 wpi_read_eeprom_channels(sc, i); 2296 2297 /* read the list of power groups */ 2298 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2299 wpi_read_eeprom_group(sc, i); 2300 } 2301 2302 static void 2303 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2304 { 2305 struct ieee80211com *ic = &sc->sc_ic; 2306 const struct wpi_chan_band *band = &wpi_bands[n]; 2307 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2308 int chan, i; 2309 2310 wpi_read_prom_data(sc, band->addr, channels, 2311 band->nchan * sizeof (struct wpi_eeprom_chan)); 2312 2313 for (i = 0; i < band->nchan; i++) { 2314 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2315 continue; 2316 2317 chan = band->chan[i]; 2318 2319 if (n == 0) { /* 2GHz band */ 2320 ic->ic_channels[chan].ic_freq = 2321 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2322 ic->ic_channels[chan].ic_flags = 2323 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2324 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2325 2326 } else { /* 5GHz band */ 2327 /* 2328 * Some 3945ABG adapters support channels 7, 8, 11 2329 * and 12 in the 2GHz *and* 5GHz bands. 2330 * Because of limitations in our net80211(9) stack, 2331 * we can't support these channels in 5GHz band. 2332 */ 2333 if (chan <= 14) 2334 continue; 2335 2336 ic->ic_channels[chan].ic_freq = 2337 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2338 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2339 } 2340 2341 /* is active scan allowed on this channel? */ 2342 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2343 ic->ic_channels[chan].ic_flags |= 2344 IEEE80211_CHAN_PASSIVE; 2345 } 2346 2347 /* save maximum allowed power for this channel */ 2348 sc->maxpwr[chan] = channels[i].maxpwr; 2349 2350 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2351 chan, channels[i].flags, sc->maxpwr[chan])); 2352 } 2353 } 2354 2355 static void 2356 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2357 { 2358 struct wpi_power_group *group = &sc->groups[n]; 2359 struct wpi_eeprom_group rgroup; 2360 int i; 2361 2362 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2363 sizeof rgroup); 2364 2365 /* save power group information */ 2366 group->chan = rgroup.chan; 2367 group->maxpwr = rgroup.maxpwr; 2368 /* temperature at which the samples were taken */ 2369 group->temp = (int16_t)le16toh(rgroup.temp); 2370 2371 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2372 group->chan, group->maxpwr, group->temp)); 2373 2374 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2375 group->samples[i].index = rgroup.samples[i].index; 2376 group->samples[i].power = rgroup.samples[i].power; 2377 2378 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2379 group->samples[i].index, group->samples[i].power)); 2380 } 2381 } 2382 2383 /* 2384 * Send a command to the firmware. 2385 */ 2386 static int 2387 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2388 { 2389 struct wpi_tx_ring *ring = &sc->cmdq; 2390 struct wpi_tx_desc *desc; 2391 struct wpi_tx_cmd *cmd; 2392 struct wpi_dma_info *dma; 2393 2394 KASSERT(size <= sizeof cmd->data); 2395 2396 desc = &ring->desc[ring->cur]; 2397 cmd = &ring->cmd[ring->cur]; 2398 2399 cmd->code = code; 2400 cmd->flags = 0; 2401 cmd->qid = ring->qid; 2402 cmd->idx = ring->cur; 2403 memcpy(cmd->data, buf, size); 2404 2405 dma = &ring->cmd_dma; 2406 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 2407 2408 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2409 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2410 ring->cur * sizeof (struct wpi_tx_cmd)); 2411 desc->segs[0].len = htole32(4 + size); 2412 2413 dma = &ring->desc_dma; 2414 bus_dmamap_sync(dma->tag, dma->map, 0, dma->size, BUS_DMASYNC_PREWRITE); 2415 2416 /* kick cmd ring */ 2417 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2418 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2419 2420 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2421 } 2422 2423 static int 2424 wpi_wme_update(struct ieee80211com *ic) 2425 { 2426 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2427 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2428 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2429 const struct wmeParams *wmep; 2430 struct wpi_wme_setup wme; 2431 int ac; 2432 2433 /* don't override default WME values if WME is not actually enabled */ 2434 if (!(ic->ic_flags & IEEE80211_F_WME)) 2435 return 0; 2436 2437 wme.flags = 0; 2438 for (ac = 0; ac < WME_NUM_AC; ac++) { 2439 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2440 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2441 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2442 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2443 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2444 2445 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2446 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2447 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2448 } 2449 2450 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2451 #undef WPI_USEC 2452 #undef WPI_EXP2 2453 } 2454 2455 /* 2456 * Configure h/w multi-rate retries. 2457 */ 2458 static int 2459 wpi_mrr_setup(struct wpi_softc *sc) 2460 { 2461 struct ieee80211com *ic = &sc->sc_ic; 2462 struct wpi_mrr_setup mrr; 2463 int i, error; 2464 2465 /* CCK rates (not used with 802.11a) */ 2466 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2467 mrr.rates[i].flags = 0; 2468 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2469 /* fallback to the immediate lower CCK rate (if any) */ 2470 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2471 /* try one time at this rate before falling back to "next" */ 2472 mrr.rates[i].ntries = 1; 2473 } 2474 2475 /* OFDM rates (not used with 802.11b) */ 2476 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2477 mrr.rates[i].flags = 0; 2478 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2479 /* fallback to the immediate lower rate (if any) */ 2480 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2481 mrr.rates[i].next = (i == WPI_OFDM6) ? 2482 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2483 WPI_OFDM6 : WPI_CCK2) : 2484 i - 1; 2485 /* try one time at this rate before falling back to "next" */ 2486 mrr.rates[i].ntries = 1; 2487 } 2488 2489 /* setup MRR for control frames */ 2490 mrr.which = htole32(WPI_MRR_CTL); 2491 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2492 if (error != 0) { 2493 aprint_error_dev(sc->sc_dev, 2494 "could not setup MRR for control frames\n"); 2495 return error; 2496 } 2497 2498 /* setup MRR for data frames */ 2499 mrr.which = htole32(WPI_MRR_DATA); 2500 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2501 if (error != 0) { 2502 aprint_error_dev(sc->sc_dev, 2503 "could not setup MRR for data frames\n"); 2504 return error; 2505 } 2506 2507 return 0; 2508 } 2509 2510 static void 2511 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2512 { 2513 struct wpi_cmd_led led; 2514 2515 led.which = which; 2516 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2517 led.off = off; 2518 led.on = on; 2519 2520 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2521 } 2522 2523 static void 2524 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2525 { 2526 struct wpi_cmd_tsf tsf; 2527 uint64_t val, mod; 2528 2529 memset(&tsf, 0, sizeof tsf); 2530 memcpy(&tsf.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 2531 tsf.bintval = htole16(ni->ni_intval); 2532 tsf.lintval = htole16(10); 2533 2534 /* compute remaining time until next beacon */ 2535 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2536 mod = le64toh(tsf.tstamp) % val; 2537 tsf.binitval = htole32((uint32_t)(val - mod)); 2538 2539 DPRINTF(("TSF bintval=%u tstamp=%" PRIu64 ", init=%u\n", 2540 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2541 2542 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2543 aprint_error_dev(sc->sc_dev, "could not enable TSF\n"); 2544 } 2545 2546 /* 2547 * Update Tx power to match what is defined for channel `c'. 2548 */ 2549 static int 2550 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2551 { 2552 struct ieee80211com *ic = &sc->sc_ic; 2553 struct wpi_power_group *group; 2554 struct wpi_cmd_txpower txpower; 2555 u_int chan; 2556 int i; 2557 2558 /* get channel number */ 2559 chan = ieee80211_chan2ieee(ic, c); 2560 2561 /* find the power group to which this channel belongs */ 2562 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2563 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2564 if (chan <= group->chan) 2565 break; 2566 } else 2567 group = &sc->groups[0]; 2568 2569 memset(&txpower, 0, sizeof txpower); 2570 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2571 txpower.chan = htole16(chan); 2572 2573 /* set Tx power for all OFDM and CCK rates */ 2574 for (i = 0; i <= 11 ; i++) { 2575 /* retrieve Tx power for this channel/rate combination */ 2576 int idx = wpi_get_power_index(sc, group, c, 2577 wpi_ridx_to_rate[i]); 2578 2579 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2580 2581 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2582 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2583 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2584 } else { 2585 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2586 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2587 } 2588 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2589 wpi_ridx_to_rate[i], idx)); 2590 } 2591 2592 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2593 } 2594 2595 /* 2596 * Determine Tx power index for a given channel/rate combination. 2597 * This takes into account the regulatory information from EEPROM and the 2598 * current temperature. 2599 */ 2600 static int 2601 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2602 struct ieee80211_channel *c, int rate) 2603 { 2604 /* fixed-point arithmetic division using a n-bit fractional part */ 2605 #define fdivround(a, b, n) \ 2606 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2607 2608 /* linear interpolation */ 2609 #define interpolate(x, x1, y1, x2, y2, n) \ 2610 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2611 2612 struct ieee80211com *ic = &sc->sc_ic; 2613 struct wpi_power_sample *sample; 2614 int pwr, idx; 2615 u_int chan; 2616 2617 /* get channel number */ 2618 chan = ieee80211_chan2ieee(ic, c); 2619 2620 /* default power is group's maximum power - 3dB */ 2621 pwr = group->maxpwr / 2; 2622 2623 /* decrease power for highest OFDM rates to reduce distortion */ 2624 switch (rate) { 2625 case 72: /* 36Mb/s */ 2626 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2627 break; 2628 case 96: /* 48Mb/s */ 2629 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2630 break; 2631 case 108: /* 54Mb/s */ 2632 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2633 break; 2634 } 2635 2636 /* never exceed channel's maximum allowed Tx power */ 2637 pwr = uimin(pwr, sc->maxpwr[chan]); 2638 2639 /* retrieve power index into gain tables from samples */ 2640 for (sample = group->samples; sample < &group->samples[3]; sample++) 2641 if (pwr > sample[1].power) 2642 break; 2643 /* fixed-point linear interpolation using a 19-bit fractional part */ 2644 idx = interpolate(pwr, sample[0].power, sample[0].index, 2645 sample[1].power, sample[1].index, 19); 2646 2647 /*- 2648 * Adjust power index based on current temperature: 2649 * - if cooler than factory-calibrated: decrease output power 2650 * - if warmer than factory-calibrated: increase output power 2651 */ 2652 idx -= (sc->temp - group->temp) * 11 / 100; 2653 2654 /* decrease power for CCK rates (-5dB) */ 2655 if (!WPI_RATE_IS_OFDM(rate)) 2656 idx += 10; 2657 2658 /* keep power index in a valid range */ 2659 if (idx < 0) 2660 return 0; 2661 if (idx > WPI_MAX_PWR_INDEX) 2662 return WPI_MAX_PWR_INDEX; 2663 return idx; 2664 2665 #undef interpolate 2666 #undef fdivround 2667 } 2668 2669 /* 2670 * Build a beacon frame that the firmware will broadcast periodically in 2671 * IBSS or HostAP modes. 2672 */ 2673 static int 2674 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2675 { 2676 struct ieee80211com *ic = &sc->sc_ic; 2677 struct wpi_tx_ring *ring = &sc->cmdq; 2678 struct wpi_tx_desc *desc; 2679 struct wpi_tx_data *data; 2680 struct wpi_tx_cmd *cmd; 2681 struct wpi_cmd_beacon *bcn; 2682 struct ieee80211_beacon_offsets bo; 2683 struct mbuf *m0; 2684 int error; 2685 2686 desc = &ring->desc[ring->cur]; 2687 data = &ring->data[ring->cur]; 2688 2689 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2690 if (m0 == NULL) { 2691 aprint_error_dev(sc->sc_dev, 2692 "could not allocate beacon frame\n"); 2693 return ENOMEM; 2694 } 2695 2696 cmd = &ring->cmd[ring->cur]; 2697 cmd->code = WPI_CMD_SET_BEACON; 2698 cmd->flags = 0; 2699 cmd->qid = ring->qid; 2700 cmd->idx = ring->cur; 2701 2702 bcn = (struct wpi_cmd_beacon *)cmd->data; 2703 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2704 bcn->id = WPI_ID_BROADCAST; 2705 bcn->ofdm_mask = 0xff; 2706 bcn->cck_mask = 0x0f; 2707 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2708 bcn->len = htole16(m0->m_pkthdr.len); 2709 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2710 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2711 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2712 2713 /* save and trim IEEE802.11 header */ 2714 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2715 m_adj(m0, sizeof (struct ieee80211_frame)); 2716 2717 /* assume beacon frame is contiguous */ 2718 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2719 BUS_DMA_READ | BUS_DMA_NOWAIT); 2720 if (error != 0) { 2721 aprint_error_dev(sc->sc_dev, "could not map beacon\n"); 2722 m_freem(m0); 2723 return error; 2724 } 2725 2726 data->m = m0; 2727 2728 /* first scatter/gather segment is used by the beacon command */ 2729 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2730 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2731 ring->cur * sizeof (struct wpi_tx_cmd)); 2732 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2733 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2734 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2735 2736 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2737 ring->desc_dma.map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2738 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 2739 BUS_DMASYNC_PREWRITE); 2740 2741 /* kick cmd ring */ 2742 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2743 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2744 2745 return 0; 2746 } 2747 2748 static int 2749 wpi_auth(struct wpi_softc *sc) 2750 { 2751 struct ieee80211com *ic = &sc->sc_ic; 2752 struct ieee80211_node *ni = ic->ic_bss; 2753 struct wpi_node_info node; 2754 int error; 2755 2756 /* update adapter's configuration */ 2757 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2758 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2759 sc->config.flags = htole32(WPI_CONFIG_TSF); 2760 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2761 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2762 WPI_CONFIG_24GHZ); 2763 } 2764 switch (ic->ic_curmode) { 2765 case IEEE80211_MODE_11A: 2766 sc->config.cck_mask = 0; 2767 sc->config.ofdm_mask = 0x15; 2768 break; 2769 case IEEE80211_MODE_11B: 2770 sc->config.cck_mask = 0x03; 2771 sc->config.ofdm_mask = 0; 2772 break; 2773 default: /* assume 802.11b/g */ 2774 sc->config.cck_mask = 0x0f; 2775 sc->config.ofdm_mask = 0x15; 2776 } 2777 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2778 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2779 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2780 sizeof (struct wpi_config), 1); 2781 if (error != 0) { 2782 aprint_error_dev(sc->sc_dev, "could not configure\n"); 2783 return error; 2784 } 2785 2786 /* configuration has changed, set Tx power accordingly */ 2787 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2788 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2789 return error; 2790 } 2791 2792 /* add default node */ 2793 memset(&node, 0, sizeof node); 2794 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2795 node.id = WPI_ID_BSS; 2796 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2797 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2798 node.action = htole32(WPI_ACTION_SET_RATE); 2799 node.antenna = WPI_ANTENNA_BOTH; 2800 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2801 if (error != 0) { 2802 aprint_error_dev(sc->sc_dev, "could not add BSS node\n"); 2803 return error; 2804 } 2805 2806 return 0; 2807 } 2808 2809 /* 2810 * Send a scan request to the firmware. Since this command is huge, we map it 2811 * into a mbuf instead of using the pre-allocated set of commands. 2812 */ 2813 static int 2814 wpi_scan(struct wpi_softc *sc) 2815 { 2816 struct ieee80211com *ic = &sc->sc_ic; 2817 struct wpi_tx_ring *ring = &sc->cmdq; 2818 struct wpi_tx_desc *desc; 2819 struct wpi_tx_data *data; 2820 struct wpi_tx_cmd *cmd; 2821 struct wpi_scan_hdr *hdr; 2822 struct wpi_scan_chan *chan; 2823 struct ieee80211_frame *wh; 2824 struct ieee80211_rateset *rs; 2825 struct ieee80211_channel *c; 2826 uint8_t *frm; 2827 int pktlen, error, nrates; 2828 2829 if (ic->ic_curchan == NULL) 2830 return EIO; 2831 2832 desc = &ring->desc[ring->cur]; 2833 data = &ring->data[ring->cur]; 2834 2835 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2836 if (data->m == NULL) { 2837 aprint_error_dev(sc->sc_dev, 2838 "could not allocate mbuf for scan command\n"); 2839 return ENOMEM; 2840 } 2841 MCLGET(data->m, M_DONTWAIT); 2842 if (!(data->m->m_flags & M_EXT)) { 2843 m_freem(data->m); 2844 data->m = NULL; 2845 aprint_error_dev(sc->sc_dev, 2846 "could not allocate mbuf for scan command\n"); 2847 return ENOMEM; 2848 } 2849 2850 cmd = mtod(data->m, struct wpi_tx_cmd *); 2851 cmd->code = WPI_CMD_SCAN; 2852 cmd->flags = 0; 2853 cmd->qid = ring->qid; 2854 cmd->idx = ring->cur; 2855 2856 hdr = (struct wpi_scan_hdr *)cmd->data; 2857 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2858 hdr->cmd.flags = htole32(WPI_TX_AUTO_SEQ); 2859 hdr->cmd.id = WPI_ID_BROADCAST; 2860 hdr->cmd.lifetime = htole32(WPI_LIFETIME_INFINITE); 2861 /* 2862 * Move to the next channel if no packets are received within 5 msecs 2863 * after sending the probe request (this helps to reduce the duration 2864 * of active scans). 2865 */ 2866 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2867 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2868 2869 if (ic->ic_curchan->ic_flags & IEEE80211_CHAN_5GHZ) { 2870 hdr->crc_threshold = htole16(1); 2871 /* send probe requests at 6Mbps */ 2872 hdr->cmd.rate = wpi_plcp_signal(12); 2873 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 2874 } else { 2875 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2876 /* send probe requests at 1Mbps */ 2877 hdr->cmd.rate = wpi_plcp_signal(2); 2878 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 2879 } 2880 2881 /* for directed scans, firmware inserts the essid IE itself */ 2882 if (ic->ic_des_esslen != 0) { 2883 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2884 hdr->essid[0].len = ic->ic_des_esslen; 2885 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2886 } 2887 2888 /* 2889 * Build a probe request frame. Most of the following code is a 2890 * copy & paste of what is done in net80211. 2891 */ 2892 wh = (struct ieee80211_frame *)(hdr + 1); 2893 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2894 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2895 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2896 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2897 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2898 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2899 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2900 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2901 2902 frm = (uint8_t *)(wh + 1); 2903 2904 /* add empty essid IE (firmware generates it for directed scans) */ 2905 *frm++ = IEEE80211_ELEMID_SSID; 2906 *frm++ = 0; 2907 2908 /* add supported rates IE */ 2909 *frm++ = IEEE80211_ELEMID_RATES; 2910 nrates = rs->rs_nrates; 2911 if (nrates > IEEE80211_RATE_SIZE) 2912 nrates = IEEE80211_RATE_SIZE; 2913 *frm++ = nrates; 2914 memcpy(frm, rs->rs_rates, nrates); 2915 frm += nrates; 2916 2917 /* add supported xrates IE */ 2918 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2919 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2920 *frm++ = IEEE80211_ELEMID_XRATES; 2921 *frm++ = nrates; 2922 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2923 frm += nrates; 2924 } 2925 2926 /* setup length of probe request */ 2927 hdr->cmd.len = htole16(frm - (uint8_t *)wh); 2928 2929 chan = (struct wpi_scan_chan *)frm; 2930 c = ic->ic_curchan; 2931 2932 chan->chan = ieee80211_chan2ieee(ic, c); 2933 chan->flags = 0; 2934 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2935 chan->flags |= WPI_CHAN_ACTIVE; 2936 if (ic->ic_des_esslen != 0) 2937 chan->flags |= WPI_CHAN_DIRECT; 2938 } 2939 chan->dsp_gain = 0x6e; 2940 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2941 chan->rf_gain = 0x3b; 2942 chan->active = htole16(10); 2943 chan->passive = htole16(110); 2944 } else { 2945 chan->rf_gain = 0x28; 2946 chan->active = htole16(20); 2947 chan->passive = htole16(120); 2948 } 2949 hdr->nchan++; 2950 chan++; 2951 2952 frm += sizeof (struct wpi_scan_chan); 2953 2954 hdr->len = htole16(frm - (uint8_t *)hdr); 2955 pktlen = frm - (uint8_t *)cmd; 2956 2957 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, NULL, 2958 BUS_DMA_NOWAIT); 2959 if (error != 0) { 2960 aprint_error_dev(sc->sc_dev, "could not map scan command\n"); 2961 m_freem(data->m); 2962 data->m = NULL; 2963 return error; 2964 } 2965 2966 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2967 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2968 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2969 2970 bus_dmamap_sync(sc->sc_dmat, ring->desc_dma.map, 0, 2971 ring->desc_dma.map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2972 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 2973 BUS_DMASYNC_PREWRITE); 2974 2975 /* kick cmd ring */ 2976 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2977 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2978 2979 return 0; /* will be notified async. of failure/success */ 2980 } 2981 2982 static int 2983 wpi_config(struct wpi_softc *sc) 2984 { 2985 struct ieee80211com *ic = &sc->sc_ic; 2986 struct ifnet *ifp = ic->ic_ifp; 2987 struct wpi_power power; 2988 struct wpi_bluetooth bluetooth; 2989 struct wpi_node_info node; 2990 int error; 2991 2992 memset(&power, 0, sizeof power); 2993 power.flags = htole32(WPI_POWER_CAM | 0x8); 2994 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2995 if (error != 0) { 2996 aprint_error_dev(sc->sc_dev, "could not set power mode\n"); 2997 return error; 2998 } 2999 3000 /* configure bluetooth coexistence */ 3001 memset(&bluetooth, 0, sizeof bluetooth); 3002 bluetooth.flags = 3; 3003 bluetooth.lead = 0xaa; 3004 bluetooth.kill = 1; 3005 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 3006 0); 3007 if (error != 0) { 3008 aprint_error_dev(sc->sc_dev, 3009 "could not configure bluetooth coexistence\n"); 3010 return error; 3011 } 3012 3013 /* configure adapter */ 3014 memset(&sc->config, 0, sizeof (struct wpi_config)); 3015 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 3016 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 3017 /* set default channel */ 3018 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 3019 sc->config.flags = htole32(WPI_CONFIG_TSF); 3020 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 3021 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 3022 WPI_CONFIG_24GHZ); 3023 } 3024 sc->config.filter = 0; 3025 switch (ic->ic_opmode) { 3026 case IEEE80211_M_STA: 3027 sc->config.mode = WPI_MODE_STA; 3028 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 3029 break; 3030 case IEEE80211_M_IBSS: 3031 case IEEE80211_M_AHDEMO: 3032 sc->config.mode = WPI_MODE_IBSS; 3033 break; 3034 case IEEE80211_M_HOSTAP: 3035 sc->config.mode = WPI_MODE_HOSTAP; 3036 break; 3037 case IEEE80211_M_MONITOR: 3038 sc->config.mode = WPI_MODE_MONITOR; 3039 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 3040 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 3041 break; 3042 } 3043 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 3044 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 3045 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 3046 sizeof (struct wpi_config), 0); 3047 if (error != 0) { 3048 aprint_error_dev(sc->sc_dev, "configure command failed\n"); 3049 return error; 3050 } 3051 3052 /* configuration has changed, set Tx power accordingly */ 3053 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 3054 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 3055 return error; 3056 } 3057 3058 /* add broadcast node */ 3059 memset(&node, 0, sizeof node); 3060 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 3061 node.id = WPI_ID_BROADCAST; 3062 node.rate = wpi_plcp_signal(2); 3063 node.action = htole32(WPI_ACTION_SET_RATE); 3064 node.antenna = WPI_ANTENNA_BOTH; 3065 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 3066 if (error != 0) { 3067 aprint_error_dev(sc->sc_dev, "could not add broadcast node\n"); 3068 return error; 3069 } 3070 3071 if ((error = wpi_mrr_setup(sc)) != 0) { 3072 aprint_error_dev(sc->sc_dev, "could not setup MRR\n"); 3073 return error; 3074 } 3075 3076 return 0; 3077 } 3078 3079 static void 3080 wpi_stop_master(struct wpi_softc *sc) 3081 { 3082 uint32_t tmp; 3083 int ntries; 3084 3085 tmp = WPI_READ(sc, WPI_RESET); 3086 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 3087 3088 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3089 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 3090 return; /* already asleep */ 3091 3092 for (ntries = 0; ntries < 100; ntries++) { 3093 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 3094 break; 3095 DELAY(10); 3096 } 3097 if (ntries == 100) { 3098 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 3099 } 3100 } 3101 3102 static int 3103 wpi_power_up(struct wpi_softc *sc) 3104 { 3105 uint32_t tmp; 3106 int ntries; 3107 3108 wpi_mem_lock(sc); 3109 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 3110 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 3111 wpi_mem_unlock(sc); 3112 3113 for (ntries = 0; ntries < 5000; ntries++) { 3114 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 3115 break; 3116 DELAY(10); 3117 } 3118 if (ntries == 5000) { 3119 aprint_error_dev(sc->sc_dev, 3120 "timeout waiting for NIC to power up\n"); 3121 return ETIMEDOUT; 3122 } 3123 return 0; 3124 } 3125 3126 static int 3127 wpi_reset(struct wpi_softc *sc) 3128 { 3129 uint32_t tmp; 3130 int ntries; 3131 3132 /* clear any pending interrupts */ 3133 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3134 3135 tmp = WPI_READ(sc, WPI_PLL_CTL); 3136 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 3137 3138 tmp = WPI_READ(sc, WPI_CHICKEN); 3139 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 3140 3141 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3142 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 3143 3144 /* wait for clock stabilization */ 3145 for (ntries = 0; ntries < 1000; ntries++) { 3146 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 3147 break; 3148 DELAY(10); 3149 } 3150 if (ntries == 1000) { 3151 aprint_error_dev(sc->sc_dev, 3152 "timeout waiting for clock stabilization\n"); 3153 return ETIMEDOUT; 3154 } 3155 3156 /* initialize EEPROM */ 3157 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3158 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3159 aprint_error_dev(sc->sc_dev, "EEPROM not found\n"); 3160 return EIO; 3161 } 3162 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3163 3164 return 0; 3165 } 3166 3167 static void 3168 wpi_hw_config(struct wpi_softc *sc) 3169 { 3170 uint32_t rev, hw; 3171 3172 /* voodoo from the reference driver */ 3173 hw = WPI_READ(sc, WPI_HWCONFIG); 3174 3175 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3176 rev = PCI_REVISION(rev); 3177 if ((rev & 0xc0) == 0x40) 3178 hw |= WPI_HW_ALM_MB; 3179 else if (!(rev & 0x80)) 3180 hw |= WPI_HW_ALM_MM; 3181 3182 if (sc->cap == 0x80) 3183 hw |= WPI_HW_SKU_MRC; 3184 3185 hw &= ~WPI_HW_REV_D; 3186 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3187 hw |= WPI_HW_REV_D; 3188 3189 if (sc->type > 1) 3190 hw |= WPI_HW_TYPE_B; 3191 3192 DPRINTF(("setting h/w config %x\n", hw)); 3193 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3194 } 3195 3196 static int 3197 wpi_init(struct ifnet *ifp) 3198 { 3199 struct wpi_softc *sc = ifp->if_softc; 3200 struct ieee80211com *ic = &sc->sc_ic; 3201 uint32_t tmp; 3202 int qid, ntries, error; 3203 3204 wpi_stop(ifp,1); 3205 (void)wpi_reset(sc); 3206 3207 wpi_mem_lock(sc); 3208 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3209 DELAY(20); 3210 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3211 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3212 wpi_mem_unlock(sc); 3213 3214 (void)wpi_power_up(sc); 3215 wpi_hw_config(sc); 3216 3217 /* init Rx ring */ 3218 wpi_mem_lock(sc); 3219 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3220 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3221 offsetof(struct wpi_shared, next)); 3222 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3223 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3224 wpi_mem_unlock(sc); 3225 3226 /* init Tx rings */ 3227 wpi_mem_lock(sc); 3228 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3229 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3230 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3231 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3232 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3233 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3234 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3235 3236 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3237 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3238 3239 for (qid = 0; qid < 6; qid++) { 3240 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3241 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3242 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3243 } 3244 wpi_mem_unlock(sc); 3245 3246 /* clear "radio off" and "disable command" bits (reversed logic) */ 3247 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3248 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3249 3250 /* clear any pending interrupts */ 3251 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3252 /* enable interrupts */ 3253 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3254 3255 /* not sure why/if this is necessary... */ 3256 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3257 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3258 3259 if ((error = wpi_load_firmware(sc)) != 0) 3260 /* wpi_load_firmware prints error messages for us. */ 3261 goto fail1; 3262 3263 /* Check the status of the radio switch */ 3264 mutex_enter(&sc->sc_rsw_mtx); 3265 if (wpi_getrfkill(sc)) { 3266 mutex_exit(&sc->sc_rsw_mtx); 3267 aprint_error_dev(sc->sc_dev, 3268 "radio is disabled by hardware switch\n"); 3269 ifp->if_flags &= ~IFF_UP; 3270 error = EBUSY; 3271 goto fail1; 3272 } 3273 sc->sc_rsw_suspend = false; 3274 cv_broadcast(&sc->sc_rsw_cv); 3275 while (sc->sc_rsw_suspend) 3276 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 3277 mutex_exit(&sc->sc_rsw_mtx); 3278 3279 /* wait for thermal sensors to calibrate */ 3280 for (ntries = 0; ntries < 1000; ntries++) { 3281 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3282 break; 3283 DELAY(10); 3284 } 3285 if (ntries == 1000) { 3286 aprint_error_dev(sc->sc_dev, 3287 "timeout waiting for thermal sensors calibration\n"); 3288 error = ETIMEDOUT; 3289 goto fail1; 3290 } 3291 DPRINTF(("temperature %d\n", sc->temp)); 3292 3293 if ((error = wpi_config(sc)) != 0) { 3294 aprint_error_dev(sc->sc_dev, "could not configure device\n"); 3295 goto fail1; 3296 } 3297 3298 ifp->if_flags &= ~IFF_OACTIVE; 3299 ifp->if_flags |= IFF_RUNNING; 3300 3301 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3302 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3303 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3304 } 3305 else 3306 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3307 3308 return 0; 3309 3310 fail1: wpi_stop(ifp, 1); 3311 return error; 3312 } 3313 3314 static void 3315 wpi_stop(struct ifnet *ifp, int disable) 3316 { 3317 struct wpi_softc *sc = ifp->if_softc; 3318 struct ieee80211com *ic = &sc->sc_ic; 3319 uint32_t tmp; 3320 int ac; 3321 3322 ifp->if_timer = sc->sc_tx_timer = 0; 3323 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3324 3325 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3326 3327 /* suspend rfkill test thread */ 3328 mutex_enter(&sc->sc_rsw_mtx); 3329 sc->sc_rsw_suspend = true; 3330 cv_broadcast(&sc->sc_rsw_cv); 3331 while (!sc->sc_rsw_suspended) 3332 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 3333 mutex_exit(&sc->sc_rsw_mtx); 3334 3335 /* disable interrupts */ 3336 WPI_WRITE(sc, WPI_MASK, 0); 3337 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3338 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3339 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3340 3341 wpi_mem_lock(sc); 3342 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3343 wpi_mem_unlock(sc); 3344 3345 /* reset all Tx rings */ 3346 for (ac = 0; ac < 4; ac++) 3347 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3348 wpi_reset_tx_ring(sc, &sc->cmdq); 3349 3350 /* reset Rx ring */ 3351 wpi_reset_rx_ring(sc, &sc->rxq); 3352 3353 wpi_mem_lock(sc); 3354 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3355 wpi_mem_unlock(sc); 3356 3357 DELAY(5); 3358 3359 wpi_stop_master(sc); 3360 3361 tmp = WPI_READ(sc, WPI_RESET); 3362 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3363 } 3364 3365 static bool 3366 wpi_resume(device_t dv, const pmf_qual_t *qual) 3367 { 3368 struct wpi_softc *sc = device_private(dv); 3369 3370 (void)wpi_reset(sc); 3371 3372 return true; 3373 } 3374 3375 /* 3376 * Return whether or not the radio is enabled in hardware 3377 * (i.e. the rfkill switch is "off"). 3378 */ 3379 static int 3380 wpi_getrfkill(struct wpi_softc *sc) 3381 { 3382 uint32_t tmp; 3383 3384 wpi_mem_lock(sc); 3385 tmp = wpi_mem_read(sc, WPI_MEM_RFKILL); 3386 wpi_mem_unlock(sc); 3387 3388 KASSERT(mutex_owned(&sc->sc_rsw_mtx)); 3389 if (tmp & 0x01) { 3390 /* switch is on */ 3391 if (sc->sc_rsw_status != WPI_RSW_ON) { 3392 sc->sc_rsw_status = WPI_RSW_ON; 3393 sysmon_pswitch_event(&sc->sc_rsw, 3394 PSWITCH_EVENT_PRESSED); 3395 } 3396 } else { 3397 /* switch is off */ 3398 if (sc->sc_rsw_status != WPI_RSW_OFF) { 3399 sc->sc_rsw_status = WPI_RSW_OFF; 3400 sysmon_pswitch_event(&sc->sc_rsw, 3401 PSWITCH_EVENT_RELEASED); 3402 } 3403 } 3404 3405 return !(tmp & 0x01); 3406 } 3407 3408 static int 3409 wpi_sysctl_radio(SYSCTLFN_ARGS) 3410 { 3411 struct sysctlnode node; 3412 struct wpi_softc *sc; 3413 int val, error; 3414 3415 node = *rnode; 3416 sc = (struct wpi_softc *)node.sysctl_data; 3417 3418 mutex_enter(&sc->sc_rsw_mtx); 3419 val = !wpi_getrfkill(sc); 3420 mutex_exit(&sc->sc_rsw_mtx); 3421 3422 node.sysctl_data = &val; 3423 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 3424 3425 if (error || newp == NULL) 3426 return error; 3427 3428 return 0; 3429 } 3430 3431 static void 3432 wpi_sysctlattach(struct wpi_softc *sc) 3433 { 3434 int rc; 3435 const struct sysctlnode *rnode; 3436 const struct sysctlnode *cnode; 3437 3438 struct sysctllog **clog = &sc->sc_sysctllog; 3439 3440 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 3441 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 3442 SYSCTL_DESCR("wpi controls and statistics"), 3443 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 3444 goto err; 3445 3446 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3447 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 3448 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 3449 wpi_sysctl_radio, 0, (void *)sc, 0, CTL_CREATE, CTL_EOL)) != 0) 3450 goto err; 3451 3452 #ifdef WPI_DEBUG 3453 /* control debugging printfs */ 3454 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3455 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 3456 "debug", SYSCTL_DESCR("Enable debugging output"), 3457 NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 3458 goto err; 3459 #endif 3460 3461 return; 3462 err: 3463 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 3464 } 3465 3466 static void 3467 wpi_rsw_thread(void *arg) 3468 { 3469 struct wpi_softc *sc = (struct wpi_softc *)arg; 3470 3471 mutex_enter(&sc->sc_rsw_mtx); 3472 for (;;) { 3473 cv_timedwait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx, hz); 3474 if (sc->sc_dying) { 3475 sc->sc_rsw_lwp = NULL; 3476 cv_broadcast(&sc->sc_rsw_cv); 3477 mutex_exit(&sc->sc_rsw_mtx); 3478 kthread_exit(0); 3479 } 3480 if (sc->sc_rsw_suspend) { 3481 sc->sc_rsw_suspended = true; 3482 cv_broadcast(&sc->sc_rsw_cv); 3483 while (sc->sc_rsw_suspend || sc->sc_dying) 3484 cv_wait(&sc->sc_rsw_cv, &sc->sc_rsw_mtx); 3485 sc->sc_rsw_suspended = false; 3486 cv_broadcast(&sc->sc_rsw_cv); 3487 } 3488 wpi_getrfkill(sc); 3489 } 3490 } 3491
Indexes created Mon Sep 29 21:09:56 GMT 2025