1 /* $NetBSD: if_wpi.c,v 1.50 2012/01/30 19:41:21 drochner Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007 5 * Damien Bergamini <damien.bergamini@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 1.50 2012/01/30 19:41:21 drochner 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 43 #include <sys/bus.h> 44 #include <machine/endian.h> 45 #include <sys/intr.h> 46 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/pcidevs.h> 50 51 #include <net/bpf.h> 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 68 #include <dev/firmload.h> 69 70 #include <dev/pci/if_wpireg.h> 71 #include <dev/pci/if_wpivar.h> 72 73 #ifdef WPI_DEBUG 74 #define DPRINTF(x) if (wpi_debug > 0) printf x 75 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 76 int wpi_debug = 1; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n, x) 80 #endif 81 82 /* 83 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 84 */ 85 static const struct ieee80211_rateset wpi_rateset_11a = 86 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 87 88 static const struct ieee80211_rateset wpi_rateset_11b = 89 { 4, { 2, 4, 11, 22 } }; 90 91 static const struct ieee80211_rateset wpi_rateset_11g = 92 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 93 94 static once_t wpi_firmware_init; 95 static kmutex_t wpi_firmware_mutex; 96 static size_t wpi_firmware_users; 97 static uint8_t *wpi_firmware_image; 98 static size_t wpi_firmware_size; 99 100 static int wpi_match(device_t, cfdata_t, void *); 101 static void wpi_attach(device_t, device_t, void *); 102 static int wpi_detach(device_t , int); 103 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 104 void **, bus_size_t, bus_size_t, int); 105 static void wpi_dma_contig_free(struct wpi_dma_info *); 106 static int wpi_alloc_shared(struct wpi_softc *); 107 static void wpi_free_shared(struct wpi_softc *); 108 static int wpi_alloc_fwmem(struct wpi_softc *); 109 static void wpi_free_fwmem(struct wpi_softc *); 110 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 111 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 112 static int wpi_alloc_rpool(struct wpi_softc *); 113 static void wpi_free_rpool(struct wpi_softc *); 114 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 115 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 116 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 117 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 118 int); 119 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 120 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 121 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 122 static void wpi_newassoc(struct ieee80211_node *, int); 123 static int wpi_media_change(struct ifnet *); 124 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 125 static void wpi_fix_channel(struct ieee80211com *, struct mbuf *); 126 static void wpi_mem_lock(struct wpi_softc *); 127 static void wpi_mem_unlock(struct wpi_softc *); 128 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 129 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 130 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 131 const uint32_t *, int); 132 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 133 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 134 static int wpi_load_firmware(struct wpi_softc *); 135 static void wpi_calib_timeout(void *); 136 static void wpi_iter_func(void *, struct ieee80211_node *); 137 static void wpi_power_calibration(struct wpi_softc *, int); 138 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 139 struct wpi_rx_data *); 140 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 141 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 142 static void wpi_notif_intr(struct wpi_softc *); 143 static int wpi_intr(void *); 144 static void wpi_read_eeprom(struct wpi_softc *); 145 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 146 static void wpi_read_eeprom_group(struct wpi_softc *, int); 147 static uint8_t wpi_plcp_signal(int); 148 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 149 struct ieee80211_node *, int); 150 static void wpi_start(struct ifnet *); 151 static void wpi_watchdog(struct ifnet *); 152 static int wpi_ioctl(struct ifnet *, u_long, void *); 153 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 154 static int wpi_wme_update(struct ieee80211com *); 155 static int wpi_mrr_setup(struct wpi_softc *); 156 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 157 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 158 static int wpi_set_txpower(struct wpi_softc *, 159 struct ieee80211_channel *, int); 160 static int wpi_get_power_index(struct wpi_softc *, 161 struct wpi_power_group *, struct ieee80211_channel *, int); 162 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 163 static int wpi_auth(struct wpi_softc *); 164 static int wpi_scan(struct wpi_softc *, uint16_t); 165 static int wpi_config(struct wpi_softc *); 166 static void wpi_stop_master(struct wpi_softc *); 167 static int wpi_power_up(struct wpi_softc *); 168 static int wpi_reset(struct wpi_softc *); 169 static void wpi_hw_config(struct wpi_softc *); 170 static int wpi_init(struct ifnet *); 171 static void wpi_stop(struct ifnet *, int); 172 static bool wpi_resume(device_t, const pmf_qual_t *); 173 static int wpi_getrfkill(struct wpi_softc *); 174 static void wpi_sysctlattach(struct wpi_softc *); 175 176 CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 177 wpi_detach, NULL); 178 179 static int 180 wpi_match(device_t parent, cfdata_t match __unused, void *aux) 181 { 182 struct pci_attach_args *pa = aux; 183 184 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 185 return 0; 186 187 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 188 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 189 return 1; 190 191 return 0; 192 } 193 194 /* Base Address Register */ 195 #define WPI_PCI_BAR0 0x10 196 197 static int 198 wpi_attach_once(void) 199 { 200 mutex_init(&wpi_firmware_mutex, MUTEX_DEFAULT, IPL_NONE); 201 return 0; 202 } 203 204 static void 205 wpi_attach(device_t parent __unused, device_t self, void *aux) 206 { 207 struct wpi_softc *sc = device_private(self); 208 struct ieee80211com *ic = &sc->sc_ic; 209 struct ifnet *ifp = &sc->sc_ec.ec_if; 210 struct pci_attach_args *pa = aux; 211 const char *intrstr; 212 bus_space_tag_t memt; 213 bus_space_handle_t memh; 214 pci_intr_handle_t ih; 215 pcireg_t data; 216 int error, ac; 217 218 RUN_ONCE(&wpi_firmware_init, wpi_attach_once); 219 sc->fw_used = false; 220 221 sc->sc_dev = self; 222 sc->sc_pct = pa->pa_pc; 223 sc->sc_pcitag = pa->pa_tag; 224 225 callout_init(&sc->calib_to, 0); 226 callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); 227 228 pci_aprint_devinfo(pa, NULL); 229 230 /* enable bus-mastering */ 231 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 232 data |= PCI_COMMAND_MASTER_ENABLE; 233 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 234 235 /* map the register window */ 236 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 237 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 238 if (error != 0) { 239 aprint_error_dev(self, "could not map memory space\n"); 240 return; 241 } 242 243 sc->sc_st = memt; 244 sc->sc_sh = memh; 245 sc->sc_dmat = pa->pa_dmat; 246 247 if (pci_intr_map(pa, &ih) != 0) { 248 aprint_error_dev(self, "could not map interrupt\n"); 249 return; 250 } 251 252 intrstr = pci_intr_string(sc->sc_pct, ih); 253 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 254 if (sc->sc_ih == NULL) { 255 aprint_error_dev(self, "could not establish interrupt"); 256 if (intrstr != NULL) 257 aprint_error(" at %s", intrstr); 258 aprint_error("\n"); 259 return; 260 } 261 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 262 263 if (wpi_reset(sc) != 0) { 264 aprint_error_dev(self, "could not reset adapter\n"); 265 return; 266 } 267 268 /* 269 * Allocate DMA memory for firmware transfers. 270 */ 271 if ((error = wpi_alloc_fwmem(sc)) != 0) 272 return; 273 274 /* 275 * Allocate shared page and Tx/Rx rings. 276 */ 277 if ((error = wpi_alloc_shared(sc)) != 0) { 278 aprint_error_dev(self, "could not allocate shared area\n"); 279 goto fail1; 280 } 281 282 if ((error = wpi_alloc_rpool(sc)) != 0) { 283 aprint_error_dev(self, "could not allocate Rx buffers\n"); 284 goto fail2; 285 } 286 287 for (ac = 0; ac < 4; ac++) { 288 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 289 if (error != 0) { 290 aprint_error_dev(self, "could not allocate Tx ring %d\n", ac); 291 goto fail3; 292 } 293 } 294 295 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 296 if (error != 0) { 297 aprint_error_dev(self, "could not allocate command ring\n"); 298 goto fail3; 299 } 300 301 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 302 aprint_error_dev(self, "could not allocate Rx ring\n"); 303 goto fail4; 304 } 305 306 ic->ic_ifp = ifp; 307 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 308 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 309 ic->ic_state = IEEE80211_S_INIT; 310 311 /* set device capabilities */ 312 ic->ic_caps = 313 IEEE80211_C_IBSS | /* IBSS mode support */ 314 IEEE80211_C_WPA | /* 802.11i */ 315 IEEE80211_C_MONITOR | /* monitor mode supported */ 316 IEEE80211_C_TXPMGT | /* tx power management */ 317 IEEE80211_C_SHSLOT | /* short slot time supported */ 318 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 319 IEEE80211_C_WME; /* 802.11e */ 320 321 /* read supported channels and MAC address from EEPROM */ 322 wpi_read_eeprom(sc); 323 324 /* set supported .11a, .11b, .11g rates */ 325 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 326 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 327 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 328 329 ic->ic_ibss_chan = &ic->ic_channels[0]; 330 331 ifp->if_softc = sc; 332 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 333 ifp->if_init = wpi_init; 334 ifp->if_stop = wpi_stop; 335 ifp->if_ioctl = wpi_ioctl; 336 ifp->if_start = wpi_start; 337 ifp->if_watchdog = wpi_watchdog; 338 IFQ_SET_READY(&ifp->if_snd); 339 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 340 341 if_attach(ifp); 342 ieee80211_ifattach(ic); 343 /* override default methods */ 344 ic->ic_node_alloc = wpi_node_alloc; 345 ic->ic_newassoc = wpi_newassoc; 346 ic->ic_wme.wme_update = wpi_wme_update; 347 348 /* override state transition machine */ 349 sc->sc_newstate = ic->ic_newstate; 350 ic->ic_newstate = wpi_newstate; 351 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 352 353 sc->amrr.amrr_min_success_threshold = 1; 354 sc->amrr.amrr_max_success_threshold = 15; 355 356 wpi_sysctlattach(sc); 357 358 if (pmf_device_register(self, NULL, wpi_resume)) 359 pmf_class_network_register(self, ifp); 360 else 361 aprint_error_dev(self, "couldn't establish power handler\n"); 362 363 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 364 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 365 &sc->sc_drvbpf); 366 367 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 368 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 369 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 370 371 sc->sc_txtap_len = sizeof sc->sc_txtapu; 372 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 373 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 374 375 ieee80211_announce(ic); 376 377 return; 378 379 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 380 fail3: while (--ac >= 0) 381 wpi_free_tx_ring(sc, &sc->txq[ac]); 382 wpi_free_rpool(sc); 383 fail2: wpi_free_shared(sc); 384 fail1: wpi_free_fwmem(sc); 385 } 386 387 static int 388 wpi_detach(device_t self, int flags __unused) 389 { 390 struct wpi_softc *sc = device_private(self); 391 struct ifnet *ifp = sc->sc_ic.ic_ifp; 392 int ac; 393 394 wpi_stop(ifp, 1); 395 396 if (ifp != NULL) 397 bpf_detach(ifp); 398 ieee80211_ifdetach(&sc->sc_ic); 399 if (ifp != NULL) 400 if_detach(ifp); 401 402 for (ac = 0; ac < 4; ac++) 403 wpi_free_tx_ring(sc, &sc->txq[ac]); 404 wpi_free_tx_ring(sc, &sc->cmdq); 405 wpi_free_rx_ring(sc, &sc->rxq); 406 wpi_free_rpool(sc); 407 wpi_free_shared(sc); 408 409 if (sc->sc_ih != NULL) { 410 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 411 sc->sc_ih = NULL; 412 } 413 414 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 415 416 if (sc->fw_used) { 417 mutex_enter(&wpi_firmware_mutex); 418 if (--wpi_firmware_users == 0) 419 firmware_free(wpi_firmware_image, wpi_firmware_size); 420 mutex_exit(&wpi_firmware_mutex); 421 } 422 423 return 0; 424 } 425 426 static int 427 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 428 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 429 { 430 int nsegs, error; 431 432 dma->tag = tag; 433 dma->size = size; 434 435 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 436 if (error != 0) 437 goto fail; 438 439 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 440 flags); 441 if (error != 0) 442 goto fail; 443 444 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 445 if (error != 0) 446 goto fail; 447 448 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 449 if (error != 0) 450 goto fail; 451 452 memset(dma->vaddr, 0, size); 453 454 dma->paddr = dma->map->dm_segs[0].ds_addr; 455 if (kvap != NULL) 456 *kvap = dma->vaddr; 457 458 return 0; 459 460 fail: wpi_dma_contig_free(dma); 461 return error; 462 } 463 464 static void 465 wpi_dma_contig_free(struct wpi_dma_info *dma) 466 { 467 if (dma->map != NULL) { 468 if (dma->vaddr != NULL) { 469 bus_dmamap_unload(dma->tag, dma->map); 470 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 471 bus_dmamem_free(dma->tag, &dma->seg, 1); 472 dma->vaddr = NULL; 473 } 474 bus_dmamap_destroy(dma->tag, dma->map); 475 dma->map = NULL; 476 } 477 } 478 479 /* 480 * Allocate a shared page between host and NIC. 481 */ 482 static int 483 wpi_alloc_shared(struct wpi_softc *sc) 484 { 485 int error; 486 /* must be aligned on a 4K-page boundary */ 487 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 488 (void **)&sc->shared, sizeof (struct wpi_shared), 489 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 490 if (error != 0) 491 aprint_error_dev(sc->sc_dev, 492 "could not allocate shared area DMA memory\n"); 493 494 return error; 495 } 496 497 static void 498 wpi_free_shared(struct wpi_softc *sc) 499 { 500 wpi_dma_contig_free(&sc->shared_dma); 501 } 502 503 /* 504 * Allocate DMA-safe memory for firmware transfer. 505 */ 506 static int 507 wpi_alloc_fwmem(struct wpi_softc *sc) 508 { 509 int error; 510 /* allocate enough contiguous space to store text and data */ 511 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 512 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 513 BUS_DMA_NOWAIT); 514 515 if (error != 0) 516 aprint_error_dev(sc->sc_dev, 517 "could not allocate firmware transfer area" 518 "DMA memory\n"); 519 return error; 520 } 521 522 static void 523 wpi_free_fwmem(struct wpi_softc *sc) 524 { 525 wpi_dma_contig_free(&sc->fw_dma); 526 } 527 528 529 static struct wpi_rbuf * 530 wpi_alloc_rbuf(struct wpi_softc *sc) 531 { 532 struct wpi_rbuf *rbuf; 533 534 mutex_enter(&sc->rxq.freelist_mtx); 535 rbuf = SLIST_FIRST(&sc->rxq.freelist); 536 if (rbuf != NULL) { 537 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 538 sc->rxq.nb_free_entries --; 539 } 540 mutex_exit(&sc->rxq.freelist_mtx); 541 542 return rbuf; 543 } 544 545 /* 546 * This is called automatically by the network stack when the mbuf to which our 547 * Rx buffer is attached is freed. 548 */ 549 static void 550 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 551 { 552 struct wpi_rbuf *rbuf = arg; 553 struct wpi_softc *sc = rbuf->sc; 554 555 /* put the buffer back in the free list */ 556 557 mutex_enter(&sc->rxq.freelist_mtx); 558 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 559 mutex_exit(&sc->rxq.freelist_mtx); 560 /* No need to protect this with a mutex, see wpi_rx_intr */ 561 sc->rxq.nb_free_entries ++; 562 563 if (__predict_true(m != NULL)) 564 pool_cache_put(mb_cache, m); 565 } 566 567 static int 568 wpi_alloc_rpool(struct wpi_softc *sc) 569 { 570 struct wpi_rx_ring *ring = &sc->rxq; 571 struct wpi_rbuf *rbuf; 572 int i, error; 573 574 /* allocate a big chunk of DMA'able memory.. */ 575 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 576 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 577 if (error != 0) { 578 aprint_normal_dev(sc->sc_dev, 579 "could not allocate Rx buffers DMA memory\n"); 580 return error; 581 } 582 583 /* ..and split it into 3KB chunks */ 584 mutex_init(&ring->freelist_mtx, MUTEX_DEFAULT, IPL_NET); 585 SLIST_INIT(&ring->freelist); 586 for (i = 0; i < WPI_RBUF_COUNT; i++) { 587 rbuf = &ring->rbuf[i]; 588 rbuf->sc = sc; /* backpointer for callbacks */ 589 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 590 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 591 592 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 593 } 594 595 ring->nb_free_entries = WPI_RBUF_COUNT; 596 return 0; 597 } 598 599 static void 600 wpi_free_rpool(struct wpi_softc *sc) 601 { 602 wpi_dma_contig_free(&sc->rxq.buf_dma); 603 } 604 605 static int 606 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 607 { 608 struct wpi_rx_data *data; 609 struct wpi_rbuf *rbuf; 610 int i, error; 611 612 ring->cur = 0; 613 614 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 615 (void **)&ring->desc, 616 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 617 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 618 if (error != 0) { 619 aprint_error_dev(sc->sc_dev, "could not allocate rx ring DMA memory\n"); 620 goto fail; 621 } 622 623 /* 624 * Setup Rx buffers. 625 */ 626 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 627 data = &ring->data[i]; 628 629 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 630 if (data->m == NULL) { 631 aprint_error_dev(sc->sc_dev, "could not allocate rx mbuf\n"); 632 error = ENOMEM; 633 goto fail; 634 } 635 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 636 m_freem(data->m); 637 data->m = NULL; 638 aprint_error_dev(sc->sc_dev, "could not allocate rx cluster\n"); 639 error = ENOMEM; 640 goto fail; 641 } 642 /* attach Rx buffer to mbuf */ 643 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 644 rbuf); 645 data->m->m_flags |= M_EXT_RW; 646 647 ring->desc[i] = htole32(rbuf->paddr); 648 } 649 650 return 0; 651 652 fail: wpi_free_rx_ring(sc, ring); 653 return error; 654 } 655 656 static void 657 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 658 { 659 int ntries; 660 661 wpi_mem_lock(sc); 662 663 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 664 for (ntries = 0; ntries < 100; ntries++) { 665 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 666 break; 667 DELAY(10); 668 } 669 #ifdef WPI_DEBUG 670 if (ntries == 100 && wpi_debug > 0) 671 aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n"); 672 #endif 673 wpi_mem_unlock(sc); 674 675 ring->cur = 0; 676 } 677 678 static void 679 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 680 { 681 int i; 682 683 wpi_dma_contig_free(&ring->desc_dma); 684 685 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 686 if (ring->data[i].m != NULL) 687 m_freem(ring->data[i].m); 688 } 689 } 690 691 static int 692 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 693 int qid) 694 { 695 struct wpi_tx_data *data; 696 int i, error; 697 698 ring->qid = qid; 699 ring->count = count; 700 ring->queued = 0; 701 ring->cur = 0; 702 703 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 704 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 705 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 706 if (error != 0) { 707 aprint_error_dev(sc->sc_dev, "could not allocate tx ring DMA memory\n"); 708 goto fail; 709 } 710 711 /* update shared page with ring's base address */ 712 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 713 714 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 715 (void **)&ring->cmd, 716 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 717 if (error != 0) { 718 aprint_error_dev(sc->sc_dev, "could not allocate tx cmd DMA memory\n"); 719 goto fail; 720 } 721 722 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 723 M_NOWAIT); 724 if (ring->data == NULL) { 725 aprint_error_dev(sc->sc_dev, "could not allocate tx data slots\n"); 726 goto fail; 727 } 728 729 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 730 731 for (i = 0; i < count; i++) { 732 data = &ring->data[i]; 733 734 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 735 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 736 &data->map); 737 if (error != 0) { 738 aprint_error_dev(sc->sc_dev, "could not create tx buf DMA map\n"); 739 goto fail; 740 } 741 } 742 743 return 0; 744 745 fail: wpi_free_tx_ring(sc, ring); 746 return error; 747 } 748 749 static void 750 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 751 { 752 struct wpi_tx_data *data; 753 int i, ntries; 754 755 wpi_mem_lock(sc); 756 757 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 758 for (ntries = 0; ntries < 100; ntries++) { 759 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 760 break; 761 DELAY(10); 762 } 763 #ifdef WPI_DEBUG 764 if (ntries == 100 && wpi_debug > 0) { 765 aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n", 766 ring->qid); 767 } 768 #endif 769 wpi_mem_unlock(sc); 770 771 for (i = 0; i < ring->count; i++) { 772 data = &ring->data[i]; 773 774 if (data->m != NULL) { 775 bus_dmamap_unload(sc->sc_dmat, data->map); 776 m_freem(data->m); 777 data->m = NULL; 778 } 779 } 780 781 ring->queued = 0; 782 ring->cur = 0; 783 } 784 785 static void 786 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 787 { 788 struct wpi_tx_data *data; 789 int i; 790 791 wpi_dma_contig_free(&ring->desc_dma); 792 wpi_dma_contig_free(&ring->cmd_dma); 793 794 if (ring->data != NULL) { 795 for (i = 0; i < ring->count; i++) { 796 data = &ring->data[i]; 797 798 if (data->m != NULL) { 799 bus_dmamap_unload(sc->sc_dmat, data->map); 800 m_freem(data->m); 801 } 802 } 803 free(ring->data, M_DEVBUF); 804 } 805 } 806 807 /*ARGUSED*/ 808 static struct ieee80211_node * 809 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 810 { 811 struct wpi_node *wn; 812 813 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 814 815 return (struct ieee80211_node *)wn; 816 } 817 818 static void 819 wpi_newassoc(struct ieee80211_node *ni, int isnew) 820 { 821 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 822 int i; 823 824 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 825 826 /* set rate to some reasonable initial value */ 827 for (i = ni->ni_rates.rs_nrates - 1; 828 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 829 i--); 830 ni->ni_txrate = i; 831 } 832 833 static int 834 wpi_media_change(struct ifnet *ifp) 835 { 836 int error; 837 838 error = ieee80211_media_change(ifp); 839 if (error != ENETRESET) 840 return error; 841 842 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 843 wpi_init(ifp); 844 845 return 0; 846 } 847 848 static int 849 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 850 { 851 struct ifnet *ifp = ic->ic_ifp; 852 struct wpi_softc *sc = ifp->if_softc; 853 struct ieee80211_node *ni; 854 int error; 855 856 callout_stop(&sc->calib_to); 857 858 switch (nstate) { 859 case IEEE80211_S_SCAN: 860 861 if (sc->is_scanning) 862 break; 863 864 sc->is_scanning = true; 865 ieee80211_node_table_reset(&ic->ic_scan); 866 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 867 868 /* make the link LED blink while we're scanning */ 869 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 870 871 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 872 aprint_error_dev(sc->sc_dev, "could not initiate scan\n"); 873 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 874 return error; 875 } 876 877 ic->ic_state = nstate; 878 return 0; 879 880 case IEEE80211_S_ASSOC: 881 if (ic->ic_state != IEEE80211_S_RUN) 882 break; 883 /* FALLTHROUGH */ 884 case IEEE80211_S_AUTH: 885 sc->config.associd = 0; 886 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 887 if ((error = wpi_auth(sc)) != 0) { 888 aprint_error_dev(sc->sc_dev, 889 "could not send authentication request\n"); 890 return error; 891 } 892 break; 893 894 case IEEE80211_S_RUN: 895 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 896 /* link LED blinks while monitoring */ 897 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 898 break; 899 } 900 901 ni = ic->ic_bss; 902 903 if (ic->ic_opmode != IEEE80211_M_STA) { 904 (void) wpi_auth(sc); /* XXX */ 905 wpi_setup_beacon(sc, ni); 906 } 907 908 wpi_enable_tsf(sc, ni); 909 910 /* update adapter's configuration */ 911 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 912 /* short preamble/slot time are negotiated when associating */ 913 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 914 WPI_CONFIG_SHSLOT); 915 if (ic->ic_flags & IEEE80211_F_SHSLOT) 916 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 917 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 918 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 919 sc->config.filter |= htole32(WPI_FILTER_BSS); 920 if (ic->ic_opmode != IEEE80211_M_STA) 921 sc->config.filter |= htole32(WPI_FILTER_BEACON); 922 923 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 924 925 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 926 sc->config.flags)); 927 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 928 sizeof (struct wpi_config), 1); 929 if (error != 0) { 930 aprint_error_dev(sc->sc_dev, "could not update configuration\n"); 931 return error; 932 } 933 934 /* configuration has changed, set Tx power accordingly */ 935 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 936 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 937 return error; 938 } 939 940 if (ic->ic_opmode == IEEE80211_M_STA) { 941 /* fake a join to init the tx rate */ 942 wpi_newassoc(ni, 1); 943 } 944 945 /* start periodic calibration timer */ 946 sc->calib_cnt = 0; 947 callout_schedule(&sc->calib_to, hz/2); 948 949 /* link LED always on while associated */ 950 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 951 break; 952 953 case IEEE80211_S_INIT: 954 sc->is_scanning = false; 955 break; 956 } 957 958 return sc->sc_newstate(ic, nstate, arg); 959 } 960 961 /* 962 * XXX: Hack to set the current channel to the value advertised in beacons or 963 * probe responses. Only used during AP detection. 964 * XXX: Duplicated from if_iwi.c 965 */ 966 static void 967 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 968 { 969 struct ieee80211_frame *wh; 970 uint8_t subtype; 971 uint8_t *frm, *efrm; 972 973 wh = mtod(m, struct ieee80211_frame *); 974 975 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 976 return; 977 978 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 979 980 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 981 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 982 return; 983 984 frm = (uint8_t *)(wh + 1); 985 efrm = mtod(m, uint8_t *) + m->m_len; 986 987 frm += 12; /* skip tstamp, bintval and capinfo fields */ 988 while (frm < efrm) { 989 if (*frm == IEEE80211_ELEMID_DSPARMS) 990 #if IEEE80211_CHAN_MAX < 255 991 if (frm[2] <= IEEE80211_CHAN_MAX) 992 #endif 993 ic->ic_curchan = &ic->ic_channels[frm[2]]; 994 995 frm += frm[1] + 2; 996 } 997 } 998 999 /* 1000 * Grab exclusive access to NIC memory. 1001 */ 1002 static void 1003 wpi_mem_lock(struct wpi_softc *sc) 1004 { 1005 uint32_t tmp; 1006 int ntries; 1007 1008 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1009 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1010 1011 /* spin until we actually get the lock */ 1012 for (ntries = 0; ntries < 1000; ntries++) { 1013 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1014 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1015 break; 1016 DELAY(10); 1017 } 1018 if (ntries == 1000) 1019 aprint_error_dev(sc->sc_dev, "could not lock memory\n"); 1020 } 1021 1022 /* 1023 * Release lock on NIC memory. 1024 */ 1025 static void 1026 wpi_mem_unlock(struct wpi_softc *sc) 1027 { 1028 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1029 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1030 } 1031 1032 static uint32_t 1033 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1034 { 1035 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1036 return WPI_READ(sc, WPI_READ_MEM_DATA); 1037 } 1038 1039 static void 1040 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1041 { 1042 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1043 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1044 } 1045 1046 static void 1047 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1048 const uint32_t *data, int wlen) 1049 { 1050 for (; wlen > 0; wlen--, data++, addr += 4) 1051 wpi_mem_write(sc, addr, *data); 1052 } 1053 1054 1055 /* 1056 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1057 * instead of using the traditional bit-bang method. 1058 */ 1059 static int 1060 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1061 { 1062 uint8_t *out = data; 1063 uint32_t val; 1064 int ntries; 1065 1066 wpi_mem_lock(sc); 1067 for (; len > 0; len -= 2, addr++) { 1068 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1069 1070 for (ntries = 0; ntries < 10; ntries++) { 1071 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1072 WPI_EEPROM_READY) 1073 break; 1074 DELAY(5); 1075 } 1076 if (ntries == 10) { 1077 aprint_error_dev(sc->sc_dev, "could not read EEPROM\n"); 1078 return ETIMEDOUT; 1079 } 1080 *out++ = val >> 16; 1081 if (len > 1) 1082 *out++ = val >> 24; 1083 } 1084 wpi_mem_unlock(sc); 1085 1086 return 0; 1087 } 1088 1089 /* 1090 * The firmware boot code is small and is intended to be copied directly into 1091 * the NIC internal memory. 1092 */ 1093 int 1094 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1095 { 1096 int ntries; 1097 1098 size /= sizeof (uint32_t); 1099 1100 wpi_mem_lock(sc); 1101 1102 /* copy microcode image into NIC memory */ 1103 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1104 (const uint32_t *)ucode, size); 1105 1106 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1107 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1108 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1109 1110 /* run microcode */ 1111 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1112 1113 /* wait for transfer to complete */ 1114 for (ntries = 0; ntries < 1000; ntries++) { 1115 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1116 break; 1117 DELAY(10); 1118 } 1119 if (ntries == 1000) { 1120 wpi_mem_unlock(sc); 1121 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1122 return ETIMEDOUT; 1123 } 1124 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1125 1126 wpi_mem_unlock(sc); 1127 1128 return 0; 1129 } 1130 1131 static int 1132 wpi_cache_firmware(struct wpi_softc *sc) 1133 { 1134 firmware_handle_t fw; 1135 int error; 1136 1137 if (sc->fw_used) 1138 return 0; 1139 1140 mutex_enter(&wpi_firmware_mutex); 1141 if (wpi_firmware_users++) { 1142 mutex_exit(&wpi_firmware_mutex); 1143 return 0; 1144 } 1145 1146 /* load firmware image from disk */ 1147 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw)) != 0) { 1148 aprint_error_dev(sc->sc_dev, "could not read firmware file\n"); 1149 goto fail1; 1150 } 1151 1152 wpi_firmware_size = firmware_get_size(fw); 1153 1154 if (wpi_firmware_size > sizeof (struct wpi_firmware_hdr) + 1155 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ + 1156 WPI_FW_INIT_TEXT_MAXSZ + WPI_FW_INIT_DATA_MAXSZ + 1157 WPI_FW_BOOT_TEXT_MAXSZ) { 1158 aprint_error_dev(sc->sc_dev, "invalid firmware file\n"); 1159 error = EFBIG; 1160 goto fail1; 1161 } 1162 1163 if (wpi_firmware_size < sizeof (struct wpi_firmware_hdr)) { 1164 aprint_error_dev(sc->sc_dev, 1165 "truncated firmware header: %zu bytes\n", 1166 wpi_firmware_size); 1167 error = EINVAL; 1168 goto fail2; 1169 } 1170 1171 wpi_firmware_image = firmware_malloc(wpi_firmware_size); 1172 if (wpi_firmware_image == NULL) { 1173 aprint_error_dev(sc->sc_dev, "not enough memory to stock firmware\n"); 1174 error = ENOMEM; 1175 goto fail1; 1176 } 1177 1178 if ((error = firmware_read(fw, 0, wpi_firmware_image, wpi_firmware_size)) != 0) { 1179 aprint_error_dev(sc->sc_dev, "can't get firmware\n"); 1180 goto fail2; 1181 } 1182 1183 sc->fw_used = true; 1184 firmware_close(fw); 1185 mutex_exit(&wpi_firmware_mutex); 1186 1187 return 0; 1188 1189 fail2: 1190 firmware_free(wpi_firmware_image, wpi_firmware_size); 1191 fail1: 1192 firmware_close(fw); 1193 if (--wpi_firmware_users == 0) 1194 firmware_free(wpi_firmware_image, wpi_firmware_size); 1195 mutex_exit(&wpi_firmware_mutex); 1196 return error; 1197 } 1198 1199 static int 1200 wpi_load_firmware(struct wpi_softc *sc) 1201 { 1202 struct wpi_dma_info *dma = &sc->fw_dma; 1203 struct wpi_firmware_hdr hdr; 1204 const uint8_t *init_text, *init_data, *main_text, *main_data; 1205 const uint8_t *boot_text; 1206 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1207 uint32_t boot_textsz; 1208 int error; 1209 1210 if ((error = wpi_cache_firmware(sc)) != 0) 1211 return error; 1212 1213 memcpy(&hdr, wpi_firmware_image, sizeof(hdr)); 1214 1215 main_textsz = le32toh(hdr.main_textsz); 1216 main_datasz = le32toh(hdr.main_datasz); 1217 init_textsz = le32toh(hdr.init_textsz); 1218 init_datasz = le32toh(hdr.init_datasz); 1219 boot_textsz = le32toh(hdr.boot_textsz); 1220 1221 /* sanity-check firmware segments sizes */ 1222 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1223 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1224 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1225 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1226 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1227 (boot_textsz & 3) != 0) { 1228 aprint_error_dev(sc->sc_dev, "invalid firmware header\n"); 1229 error = EINVAL; 1230 goto free_firmware; 1231 } 1232 1233 /* check that all firmware segments are present */ 1234 if (wpi_firmware_size < 1235 sizeof (struct wpi_firmware_hdr) + main_textsz + 1236 main_datasz + init_textsz + init_datasz + boot_textsz) { 1237 aprint_error_dev(sc->sc_dev, 1238 "firmware file too short: %zu bytes\n", wpi_firmware_size); 1239 error = EINVAL; 1240 goto free_firmware; 1241 } 1242 1243 /* get pointers to firmware segments */ 1244 main_text = wpi_firmware_image + sizeof (struct wpi_firmware_hdr); 1245 main_data = main_text + main_textsz; 1246 init_text = main_data + main_datasz; 1247 init_data = init_text + init_textsz; 1248 boot_text = init_data + init_datasz; 1249 1250 /* copy initialization images into pre-allocated DMA-safe memory */ 1251 memcpy(dma->vaddr, init_data, init_datasz); 1252 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1253 1254 /* tell adapter where to find initialization images */ 1255 wpi_mem_lock(sc); 1256 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1257 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1258 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1259 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1260 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1261 wpi_mem_unlock(sc); 1262 1263 /* load firmware boot code */ 1264 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1265 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1266 return error; 1267 } 1268 1269 /* now press "execute" ;-) */ 1270 WPI_WRITE(sc, WPI_RESET, 0); 1271 1272 /* ..and wait at most one second for adapter to initialize */ 1273 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1274 /* this isn't what was supposed to happen.. */ 1275 aprint_error_dev(sc->sc_dev, 1276 "timeout waiting for adapter to initialize\n"); 1277 } 1278 1279 /* copy runtime images into pre-allocated DMA-safe memory */ 1280 memcpy(dma->vaddr, main_data, main_datasz); 1281 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1282 1283 /* tell adapter where to find runtime images */ 1284 wpi_mem_lock(sc); 1285 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1286 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1287 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1288 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1289 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1290 wpi_mem_unlock(sc); 1291 1292 /* wait at most one second for second alive notification */ 1293 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1294 /* this isn't what was supposed to happen.. */ 1295 aprint_error_dev(sc->sc_dev, 1296 "timeout waiting for adapter to initialize\n"); 1297 } 1298 1299 return error; 1300 1301 free_firmware: 1302 mutex_enter(&wpi_firmware_mutex); 1303 sc->fw_used = false; 1304 --wpi_firmware_users; 1305 mutex_exit(&wpi_firmware_mutex); 1306 return error; 1307 } 1308 1309 static void 1310 wpi_calib_timeout(void *arg) 1311 { 1312 struct wpi_softc *sc = arg; 1313 struct ieee80211com *ic = &sc->sc_ic; 1314 int temp, s; 1315 1316 /* automatic rate control triggered every 500ms */ 1317 if (ic->ic_fixed_rate == -1) { 1318 s = splnet(); 1319 if (ic->ic_opmode == IEEE80211_M_STA) 1320 wpi_iter_func(sc, ic->ic_bss); 1321 else 1322 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1323 splx(s); 1324 } 1325 1326 /* update sensor data */ 1327 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1328 1329 /* automatic power calibration every 60s */ 1330 if (++sc->calib_cnt >= 120) { 1331 wpi_power_calibration(sc, temp); 1332 sc->calib_cnt = 0; 1333 } 1334 1335 callout_schedule(&sc->calib_to, hz/2); 1336 } 1337 1338 static void 1339 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1340 { 1341 struct wpi_softc *sc = arg; 1342 struct wpi_node *wn = (struct wpi_node *)ni; 1343 1344 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1345 } 1346 1347 /* 1348 * This function is called periodically (every 60 seconds) to adjust output 1349 * power to temperature changes. 1350 */ 1351 void 1352 wpi_power_calibration(struct wpi_softc *sc, int temp) 1353 { 1354 /* sanity-check read value */ 1355 if (temp < -260 || temp > 25) { 1356 /* this can't be correct, ignore */ 1357 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1358 return; 1359 } 1360 1361 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1362 1363 /* adjust Tx power if need be */ 1364 if (abs(temp - sc->temp) <= 6) 1365 return; 1366 1367 sc->temp = temp; 1368 1369 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1370 /* just warn, too bad for the automatic calibration... */ 1371 aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n"); 1372 } 1373 } 1374 1375 static void 1376 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1377 struct wpi_rx_data *data) 1378 { 1379 struct ieee80211com *ic = &sc->sc_ic; 1380 struct ifnet *ifp = ic->ic_ifp; 1381 struct wpi_rx_ring *ring = &sc->rxq; 1382 struct wpi_rx_stat *stat; 1383 struct wpi_rx_head *head; 1384 struct wpi_rx_tail *tail; 1385 struct wpi_rbuf *rbuf; 1386 struct ieee80211_frame *wh; 1387 struct ieee80211_node *ni; 1388 struct mbuf *m, *mnew; 1389 int data_off ; 1390 1391 stat = (struct wpi_rx_stat *)(desc + 1); 1392 1393 if (stat->len > WPI_STAT_MAXLEN) { 1394 aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n"); 1395 ifp->if_ierrors++; 1396 return; 1397 } 1398 1399 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1400 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1401 1402 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1403 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1404 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1405 le64toh(tail->tstamp))); 1406 1407 /* 1408 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1409 * to radiotap in monitor mode). 1410 */ 1411 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1412 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1413 ifp->if_ierrors++; 1414 return; 1415 } 1416 1417 /* Compute where are the useful datas */ 1418 data_off = (char*)(head + 1) - mtod(data->m, char*); 1419 1420 /* 1421 * If the number of free entry is too low 1422 * just dup the data->m socket and reuse the same rbuf entry 1423 * Note that thi test is not protected by a mutex because the 1424 * only path that causes nb_free_entries to decrease is through 1425 * this interrupt routine, which is not re-entrent. 1426 * What may not be obvious is that the safe path is if that test 1427 * evaluates as true, so nb_free_entries can grow any time. 1428 */ 1429 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1430 1431 /* Prepare the mbuf for the m_dup */ 1432 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1433 data->m->m_data = (char*) data->m->m_data + data_off; 1434 1435 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1436 1437 /* Restore the m_data pointer for future use */ 1438 data->m->m_data = (char*) data->m->m_data - data_off; 1439 1440 if (m == NULL) { 1441 ifp->if_ierrors++; 1442 return; 1443 } 1444 } else { 1445 1446 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1447 if (mnew == NULL) { 1448 ifp->if_ierrors++; 1449 return; 1450 } 1451 1452 rbuf = wpi_alloc_rbuf(sc); 1453 KASSERT(rbuf != NULL); 1454 1455 /* attach Rx buffer to mbuf */ 1456 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1457 rbuf); 1458 mnew->m_flags |= M_EXT_RW; 1459 1460 m = data->m; 1461 data->m = mnew; 1462 1463 /* update Rx descriptor */ 1464 ring->desc[ring->cur] = htole32(rbuf->paddr); 1465 1466 m->m_data = (char*)m->m_data + data_off; 1467 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1468 } 1469 1470 /* finalize mbuf */ 1471 m->m_pkthdr.rcvif = ifp; 1472 1473 if (ic->ic_state == IEEE80211_S_SCAN) 1474 wpi_fix_channel(ic, m); 1475 1476 if (sc->sc_drvbpf != NULL) { 1477 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1478 1479 tap->wr_flags = 0; 1480 tap->wr_chan_freq = 1481 htole16(ic->ic_channels[head->chan].ic_freq); 1482 tap->wr_chan_flags = 1483 htole16(ic->ic_channels[head->chan].ic_flags); 1484 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1485 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1486 tap->wr_tsft = tail->tstamp; 1487 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1488 switch (head->rate) { 1489 /* CCK rates */ 1490 case 10: tap->wr_rate = 2; break; 1491 case 20: tap->wr_rate = 4; break; 1492 case 55: tap->wr_rate = 11; break; 1493 case 110: tap->wr_rate = 22; break; 1494 /* OFDM rates */ 1495 case 0xd: tap->wr_rate = 12; break; 1496 case 0xf: tap->wr_rate = 18; break; 1497 case 0x5: tap->wr_rate = 24; break; 1498 case 0x7: tap->wr_rate = 36; break; 1499 case 0x9: tap->wr_rate = 48; break; 1500 case 0xb: tap->wr_rate = 72; break; 1501 case 0x1: tap->wr_rate = 96; break; 1502 case 0x3: tap->wr_rate = 108; break; 1503 /* unknown rate: should not happen */ 1504 default: tap->wr_rate = 0; 1505 } 1506 if (le16toh(head->flags) & 0x4) 1507 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1508 1509 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1510 } 1511 1512 /* grab a reference to the source node */ 1513 wh = mtod(m, struct ieee80211_frame *); 1514 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1515 1516 /* send the frame to the 802.11 layer */ 1517 ieee80211_input(ic, m, ni, stat->rssi, 0); 1518 1519 /* release node reference */ 1520 ieee80211_free_node(ni); 1521 } 1522 1523 static void 1524 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1525 { 1526 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1527 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1528 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1529 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1530 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1531 1532 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1533 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1534 stat->nkill, stat->rate, le32toh(stat->duration), 1535 le32toh(stat->status))); 1536 1537 /* 1538 * Update rate control statistics for the node. 1539 * XXX we should not count mgmt frames since they're always sent at 1540 * the lowest available bit-rate. 1541 */ 1542 wn->amn.amn_txcnt++; 1543 if (stat->ntries > 0) { 1544 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1545 wn->amn.amn_retrycnt++; 1546 } 1547 1548 if ((le32toh(stat->status) & 0xff) != 1) 1549 ifp->if_oerrors++; 1550 else 1551 ifp->if_opackets++; 1552 1553 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1554 m_freem(txdata->m); 1555 txdata->m = NULL; 1556 ieee80211_free_node(txdata->ni); 1557 txdata->ni = NULL; 1558 1559 ring->queued--; 1560 1561 sc->sc_tx_timer = 0; 1562 ifp->if_flags &= ~IFF_OACTIVE; 1563 wpi_start(ifp); 1564 } 1565 1566 static void 1567 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1568 { 1569 struct wpi_tx_ring *ring = &sc->cmdq; 1570 struct wpi_tx_data *data; 1571 1572 if ((desc->qid & 7) != 4) 1573 return; /* not a command ack */ 1574 1575 data = &ring->data[desc->idx]; 1576 1577 /* if the command was mapped in a mbuf, free it */ 1578 if (data->m != NULL) { 1579 bus_dmamap_unload(sc->sc_dmat, data->map); 1580 m_freem(data->m); 1581 data->m = NULL; 1582 } 1583 1584 wakeup(&ring->cmd[desc->idx]); 1585 } 1586 1587 static void 1588 wpi_notif_intr(struct wpi_softc *sc) 1589 { 1590 struct ieee80211com *ic = &sc->sc_ic; 1591 struct ifnet *ifp = ic->ic_ifp; 1592 struct wpi_rx_desc *desc; 1593 struct wpi_rx_data *data; 1594 uint32_t hw; 1595 1596 hw = le32toh(sc->shared->next); 1597 while (sc->rxq.cur != hw) { 1598 data = &sc->rxq.data[sc->rxq.cur]; 1599 1600 desc = mtod(data->m, struct wpi_rx_desc *); 1601 1602 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1603 "len=%d\n", desc->qid, desc->idx, desc->flags, 1604 desc->type, le32toh(desc->len))); 1605 1606 if (!(desc->qid & 0x80)) /* reply to a command */ 1607 wpi_cmd_intr(sc, desc); 1608 1609 switch (desc->type) { 1610 case WPI_RX_DONE: 1611 /* a 802.11 frame was received */ 1612 wpi_rx_intr(sc, desc, data); 1613 break; 1614 1615 case WPI_TX_DONE: 1616 /* a 802.11 frame has been transmitted */ 1617 wpi_tx_intr(sc, desc); 1618 break; 1619 1620 case WPI_UC_READY: 1621 { 1622 struct wpi_ucode_info *uc = 1623 (struct wpi_ucode_info *)(desc + 1); 1624 1625 /* the microcontroller is ready */ 1626 DPRINTF(("microcode alive notification version %x " 1627 "alive %x\n", le32toh(uc->version), 1628 le32toh(uc->valid))); 1629 1630 if (le32toh(uc->valid) != 1) { 1631 aprint_error_dev(sc->sc_dev, 1632 "microcontroller initialization failed\n"); 1633 } 1634 break; 1635 } 1636 case WPI_STATE_CHANGED: 1637 { 1638 uint32_t *status = (uint32_t *)(desc + 1); 1639 1640 /* enabled/disabled notification */ 1641 DPRINTF(("state changed to %x\n", le32toh(*status))); 1642 1643 if (le32toh(*status) & 1) { 1644 /* the radio button has to be pushed */ 1645 aprint_error_dev(sc->sc_dev, "Radio transmitter is off\n"); 1646 /* turn the interface down */ 1647 ifp->if_flags &= ~IFF_UP; 1648 wpi_stop(ifp, 1); 1649 return; /* no further processing */ 1650 } 1651 break; 1652 } 1653 case WPI_START_SCAN: 1654 { 1655 struct wpi_start_scan *scan = 1656 (struct wpi_start_scan *)(desc + 1); 1657 1658 DPRINTFN(2, ("scanning channel %d status %x\n", 1659 scan->chan, le32toh(scan->status))); 1660 1661 /* fix current channel */ 1662 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1663 break; 1664 } 1665 case WPI_STOP_SCAN: 1666 { 1667 struct wpi_stop_scan *scan = 1668 (struct wpi_stop_scan *)(desc + 1); 1669 1670 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1671 scan->nchan, scan->status, scan->chan)); 1672 1673 if (scan->status == 1 && scan->chan <= 14) { 1674 /* 1675 * We just finished scanning 802.11g channels, 1676 * start scanning 802.11a ones. 1677 */ 1678 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1679 break; 1680 } 1681 sc->is_scanning = false; 1682 ieee80211_end_scan(ic); 1683 break; 1684 } 1685 } 1686 1687 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1688 } 1689 1690 /* tell the firmware what we have processed */ 1691 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1692 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1693 } 1694 1695 static int 1696 wpi_intr(void *arg) 1697 { 1698 struct wpi_softc *sc = arg; 1699 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1700 uint32_t r; 1701 1702 r = WPI_READ(sc, WPI_INTR); 1703 if (r == 0 || r == 0xffffffff) 1704 return 0; /* not for us */ 1705 1706 DPRINTFN(5, ("interrupt reg %x\n", r)); 1707 1708 /* disable interrupts */ 1709 WPI_WRITE(sc, WPI_MASK, 0); 1710 /* ack interrupts */ 1711 WPI_WRITE(sc, WPI_INTR, r); 1712 1713 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1714 aprint_error_dev(sc->sc_dev, "fatal firmware error\n"); 1715 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1716 wpi_stop(sc->sc_ic.ic_ifp, 1); 1717 return 1; 1718 } 1719 1720 if (r & WPI_RX_INTR) 1721 wpi_notif_intr(sc); 1722 1723 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1724 wakeup(sc); 1725 1726 /* re-enable interrupts */ 1727 if (ifp->if_flags & IFF_UP) 1728 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1729 1730 return 1; 1731 } 1732 1733 static uint8_t 1734 wpi_plcp_signal(int rate) 1735 { 1736 switch (rate) { 1737 /* CCK rates (returned values are device-dependent) */ 1738 case 2: return 10; 1739 case 4: return 20; 1740 case 11: return 55; 1741 case 22: return 110; 1742 1743 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1744 /* R1-R4, (u)ral is R4-R1 */ 1745 case 12: return 0xd; 1746 case 18: return 0xf; 1747 case 24: return 0x5; 1748 case 36: return 0x7; 1749 case 48: return 0x9; 1750 case 72: return 0xb; 1751 case 96: return 0x1; 1752 case 108: return 0x3; 1753 1754 /* unsupported rates (should not get there) */ 1755 default: return 0; 1756 } 1757 } 1758 1759 /* quickly determine if a given rate is CCK or OFDM */ 1760 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1761 1762 static int 1763 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1764 int ac) 1765 { 1766 struct ieee80211com *ic = &sc->sc_ic; 1767 struct wpi_tx_ring *ring = &sc->txq[ac]; 1768 struct wpi_tx_desc *desc; 1769 struct wpi_tx_data *data; 1770 struct wpi_tx_cmd *cmd; 1771 struct wpi_cmd_data *tx; 1772 struct ieee80211_frame *wh; 1773 struct ieee80211_key *k; 1774 const struct chanAccParams *cap; 1775 struct mbuf *mnew; 1776 int i, error, rate, hdrlen, noack = 0; 1777 1778 desc = &ring->desc[ring->cur]; 1779 data = &ring->data[ring->cur]; 1780 1781 wh = mtod(m0, struct ieee80211_frame *); 1782 1783 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1784 cap = &ic->ic_wme.wme_chanParams; 1785 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1786 } 1787 1788 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1789 k = ieee80211_crypto_encap(ic, ni, m0); 1790 if (k == NULL) { 1791 m_freem(m0); 1792 return ENOBUFS; 1793 } 1794 1795 /* packet header may have moved, reset our local pointer */ 1796 wh = mtod(m0, struct ieee80211_frame *); 1797 } 1798 1799 hdrlen = ieee80211_anyhdrsize(wh); 1800 1801 /* pickup a rate */ 1802 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1803 IEEE80211_FC0_TYPE_MGT) { 1804 /* mgmt frames are sent at the lowest available bit-rate */ 1805 rate = ni->ni_rates.rs_rates[0]; 1806 } else { 1807 if (ic->ic_fixed_rate != -1) { 1808 rate = ic->ic_sup_rates[ic->ic_curmode]. 1809 rs_rates[ic->ic_fixed_rate]; 1810 } else 1811 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1812 } 1813 rate &= IEEE80211_RATE_VAL; 1814 1815 1816 if (sc->sc_drvbpf != NULL) { 1817 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1818 1819 tap->wt_flags = 0; 1820 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1821 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1822 tap->wt_rate = rate; 1823 tap->wt_hwqueue = ac; 1824 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1825 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1826 1827 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1828 } 1829 1830 cmd = &ring->cmd[ring->cur]; 1831 cmd->code = WPI_CMD_TX_DATA; 1832 cmd->flags = 0; 1833 cmd->qid = ring->qid; 1834 cmd->idx = ring->cur; 1835 1836 tx = (struct wpi_cmd_data *)cmd->data; 1837 tx->flags = 0; 1838 1839 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1840 tx->flags |= htole32(WPI_TX_NEED_ACK); 1841 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1842 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1843 1844 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1845 1846 /* retrieve destination node's id */ 1847 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1848 WPI_ID_BSS; 1849 1850 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1851 IEEE80211_FC0_TYPE_MGT) { 1852 /* tell h/w to set timestamp in probe responses */ 1853 if ((wh->i_fc[0] & 1854 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1855 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1856 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1857 1858 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1859 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1860 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1861 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1862 tx->timeout = htole16(3); 1863 else 1864 tx->timeout = htole16(2); 1865 } else 1866 tx->timeout = htole16(0); 1867 1868 tx->rate = wpi_plcp_signal(rate); 1869 1870 /* be very persistant at sending frames out */ 1871 tx->rts_ntries = 7; 1872 tx->data_ntries = 15; 1873 1874 tx->ofdm_mask = 0xff; 1875 tx->cck_mask = 0xf; 1876 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1877 1878 tx->len = htole16(m0->m_pkthdr.len); 1879 1880 /* save and trim IEEE802.11 header */ 1881 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 1882 m_adj(m0, hdrlen); 1883 1884 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1885 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1886 if (error != 0 && error != EFBIG) { 1887 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", error); 1888 m_freem(m0); 1889 return error; 1890 } 1891 if (error != 0) { 1892 /* too many fragments, linearize */ 1893 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1894 if (mnew == NULL) { 1895 m_freem(m0); 1896 return ENOMEM; 1897 } 1898 1899 M_COPY_PKTHDR(mnew, m0); 1900 if (m0->m_pkthdr.len > MHLEN) { 1901 MCLGET(mnew, M_DONTWAIT); 1902 if (!(mnew->m_flags & M_EXT)) { 1903 m_freem(m0); 1904 m_freem(mnew); 1905 return ENOMEM; 1906 } 1907 } 1908 1909 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1910 m_freem(m0); 1911 mnew->m_len = mnew->m_pkthdr.len; 1912 m0 = mnew; 1913 1914 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1915 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1916 if (error != 0) { 1917 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 1918 error); 1919 m_freem(m0); 1920 return error; 1921 } 1922 } 1923 1924 data->m = m0; 1925 data->ni = ni; 1926 1927 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1928 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1929 1930 /* first scatter/gather segment is used by the tx data command */ 1931 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1932 (1 + data->map->dm_nsegs) << 24); 1933 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1934 ring->cur * sizeof (struct wpi_tx_cmd)); 1935 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 1936 ((hdrlen + 3) & ~3)); 1937 1938 for (i = 1; i <= data->map->dm_nsegs; i++) { 1939 desc->segs[i].addr = 1940 htole32(data->map->dm_segs[i - 1].ds_addr); 1941 desc->segs[i].len = 1942 htole32(data->map->dm_segs[i - 1].ds_len); 1943 } 1944 1945 ring->queued++; 1946 1947 /* kick ring */ 1948 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1949 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1950 1951 return 0; 1952 } 1953 1954 static void 1955 wpi_start(struct ifnet *ifp) 1956 { 1957 struct wpi_softc *sc = ifp->if_softc; 1958 struct ieee80211com *ic = &sc->sc_ic; 1959 struct ieee80211_node *ni; 1960 struct ether_header *eh; 1961 struct mbuf *m0; 1962 int ac; 1963 1964 /* 1965 * net80211 may still try to send management frames even if the 1966 * IFF_RUNNING flag is not set... 1967 */ 1968 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1969 return; 1970 1971 for (;;) { 1972 IF_DEQUEUE(&ic->ic_mgtq, m0); 1973 if (m0 != NULL) { 1974 1975 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1976 m0->m_pkthdr.rcvif = NULL; 1977 1978 /* management frames go into ring 0 */ 1979 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1980 ifp->if_oerrors++; 1981 continue; 1982 } 1983 bpf_mtap3(ic->ic_rawbpf, m0); 1984 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1985 ifp->if_oerrors++; 1986 break; 1987 } 1988 } else { 1989 if (ic->ic_state != IEEE80211_S_RUN) 1990 break; 1991 IFQ_POLL(&ifp->if_snd, m0); 1992 if (m0 == NULL) 1993 break; 1994 1995 if (m0->m_len < sizeof (*eh) && 1996 (m0 = m_pullup(m0, sizeof (*eh))) == NULL) { 1997 ifp->if_oerrors++; 1998 continue; 1999 } 2000 eh = mtod(m0, struct ether_header *); 2001 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2002 if (ni == NULL) { 2003 m_freem(m0); 2004 ifp->if_oerrors++; 2005 continue; 2006 } 2007 2008 /* classify mbuf so we can find which tx ring to use */ 2009 if (ieee80211_classify(ic, m0, ni) != 0) { 2010 m_freem(m0); 2011 ieee80211_free_node(ni); 2012 ifp->if_oerrors++; 2013 continue; 2014 } 2015 2016 /* no QoS encapsulation for EAPOL frames */ 2017 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2018 M_WME_GETAC(m0) : WME_AC_BE; 2019 2020 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2021 /* there is no place left in this ring */ 2022 ifp->if_flags |= IFF_OACTIVE; 2023 break; 2024 } 2025 IFQ_DEQUEUE(&ifp->if_snd, m0); 2026 bpf_mtap(ifp, m0); 2027 m0 = ieee80211_encap(ic, m0, ni); 2028 if (m0 == NULL) { 2029 ieee80211_free_node(ni); 2030 ifp->if_oerrors++; 2031 continue; 2032 } 2033 bpf_mtap3(ic->ic_rawbpf, m0); 2034 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2035 ieee80211_free_node(ni); 2036 ifp->if_oerrors++; 2037 break; 2038 } 2039 } 2040 2041 sc->sc_tx_timer = 5; 2042 ifp->if_timer = 1; 2043 } 2044 } 2045 2046 static void 2047 wpi_watchdog(struct ifnet *ifp) 2048 { 2049 struct wpi_softc *sc = ifp->if_softc; 2050 2051 ifp->if_timer = 0; 2052 2053 if (sc->sc_tx_timer > 0) { 2054 if (--sc->sc_tx_timer == 0) { 2055 aprint_error_dev(sc->sc_dev, "device timeout\n"); 2056 ifp->if_oerrors++; 2057 ifp->if_flags &= ~IFF_UP; 2058 wpi_stop(ifp, 1); 2059 return; 2060 } 2061 ifp->if_timer = 1; 2062 } 2063 2064 ieee80211_watchdog(&sc->sc_ic); 2065 } 2066 2067 static int 2068 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2069 { 2070 #define IS_RUNNING(ifp) \ 2071 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2072 2073 struct wpi_softc *sc = ifp->if_softc; 2074 struct ieee80211com *ic = &sc->sc_ic; 2075 int s, error = 0; 2076 2077 s = splnet(); 2078 2079 switch (cmd) { 2080 case SIOCSIFFLAGS: 2081 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 2082 break; 2083 if (ifp->if_flags & IFF_UP) { 2084 if (!(ifp->if_flags & IFF_RUNNING)) 2085 wpi_init(ifp); 2086 } else { 2087 if (ifp->if_flags & IFF_RUNNING) 2088 wpi_stop(ifp, 1); 2089 } 2090 break; 2091 2092 case SIOCADDMULTI: 2093 case SIOCDELMULTI: 2094 /* XXX no h/w multicast filter? --dyoung */ 2095 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2096 /* setup multicast filter, etc */ 2097 error = 0; 2098 } 2099 break; 2100 2101 default: 2102 error = ieee80211_ioctl(ic, cmd, data); 2103 } 2104 2105 if (error == ENETRESET) { 2106 if (IS_RUNNING(ifp) && 2107 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2108 wpi_init(ifp); 2109 error = 0; 2110 } 2111 2112 splx(s); 2113 return error; 2114 2115 #undef IS_RUNNING 2116 } 2117 2118 /* 2119 * Extract various information from EEPROM. 2120 */ 2121 static void 2122 wpi_read_eeprom(struct wpi_softc *sc) 2123 { 2124 struct ieee80211com *ic = &sc->sc_ic; 2125 char domain[4]; 2126 int i; 2127 2128 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2129 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2130 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2131 2132 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2133 sc->type)); 2134 2135 /* read and print regulatory domain */ 2136 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2137 aprint_normal_dev(sc->sc_dev, "%.4s", domain); 2138 2139 /* read and print MAC address */ 2140 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2141 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2142 2143 /* read the list of authorized channels */ 2144 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2145 wpi_read_eeprom_channels(sc, i); 2146 2147 /* read the list of power groups */ 2148 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2149 wpi_read_eeprom_group(sc, i); 2150 } 2151 2152 static void 2153 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2154 { 2155 struct ieee80211com *ic = &sc->sc_ic; 2156 const struct wpi_chan_band *band = &wpi_bands[n]; 2157 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2158 int chan, i; 2159 2160 wpi_read_prom_data(sc, band->addr, channels, 2161 band->nchan * sizeof (struct wpi_eeprom_chan)); 2162 2163 for (i = 0; i < band->nchan; i++) { 2164 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2165 continue; 2166 2167 chan = band->chan[i]; 2168 2169 if (n == 0) { /* 2GHz band */ 2170 ic->ic_channels[chan].ic_freq = 2171 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2172 ic->ic_channels[chan].ic_flags = 2173 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2174 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2175 2176 } else { /* 5GHz band */ 2177 /* 2178 * Some 3945abg adapters support channels 7, 8, 11 2179 * and 12 in the 2GHz *and* 5GHz bands. 2180 * Because of limitations in our net80211(9) stack, 2181 * we can't support these channels in 5GHz band. 2182 */ 2183 if (chan <= 14) 2184 continue; 2185 2186 ic->ic_channels[chan].ic_freq = 2187 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2188 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2189 } 2190 2191 /* is active scan allowed on this channel? */ 2192 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2193 ic->ic_channels[chan].ic_flags |= 2194 IEEE80211_CHAN_PASSIVE; 2195 } 2196 2197 /* save maximum allowed power for this channel */ 2198 sc->maxpwr[chan] = channels[i].maxpwr; 2199 2200 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2201 chan, channels[i].flags, sc->maxpwr[chan])); 2202 } 2203 } 2204 2205 static void 2206 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2207 { 2208 struct wpi_power_group *group = &sc->groups[n]; 2209 struct wpi_eeprom_group rgroup; 2210 int i; 2211 2212 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2213 sizeof rgroup); 2214 2215 /* save power group information */ 2216 group->chan = rgroup.chan; 2217 group->maxpwr = rgroup.maxpwr; 2218 /* temperature at which the samples were taken */ 2219 group->temp = (int16_t)le16toh(rgroup.temp); 2220 2221 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2222 group->chan, group->maxpwr, group->temp)); 2223 2224 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2225 group->samples[i].index = rgroup.samples[i].index; 2226 group->samples[i].power = rgroup.samples[i].power; 2227 2228 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2229 group->samples[i].index, group->samples[i].power)); 2230 } 2231 } 2232 2233 /* 2234 * Send a command to the firmware. 2235 */ 2236 static int 2237 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2238 { 2239 struct wpi_tx_ring *ring = &sc->cmdq; 2240 struct wpi_tx_desc *desc; 2241 struct wpi_tx_cmd *cmd; 2242 2243 KASSERT(size <= sizeof cmd->data); 2244 2245 desc = &ring->desc[ring->cur]; 2246 cmd = &ring->cmd[ring->cur]; 2247 2248 cmd->code = code; 2249 cmd->flags = 0; 2250 cmd->qid = ring->qid; 2251 cmd->idx = ring->cur; 2252 memcpy(cmd->data, buf, size); 2253 2254 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2255 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2256 ring->cur * sizeof (struct wpi_tx_cmd)); 2257 desc->segs[0].len = htole32(4 + size); 2258 2259 /* kick cmd ring */ 2260 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2261 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2262 2263 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2264 } 2265 2266 static int 2267 wpi_wme_update(struct ieee80211com *ic) 2268 { 2269 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2270 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2271 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2272 const struct wmeParams *wmep; 2273 struct wpi_wme_setup wme; 2274 int ac; 2275 2276 /* don't override default WME values if WME is not actually enabled */ 2277 if (!(ic->ic_flags & IEEE80211_F_WME)) 2278 return 0; 2279 2280 wme.flags = 0; 2281 for (ac = 0; ac < WME_NUM_AC; ac++) { 2282 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2283 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2284 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2285 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2286 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2287 2288 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2289 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2290 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2291 } 2292 2293 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2294 #undef WPI_USEC 2295 #undef WPI_EXP2 2296 } 2297 2298 /* 2299 * Configure h/w multi-rate retries. 2300 */ 2301 static int 2302 wpi_mrr_setup(struct wpi_softc *sc) 2303 { 2304 struct ieee80211com *ic = &sc->sc_ic; 2305 struct wpi_mrr_setup mrr; 2306 int i, error; 2307 2308 /* CCK rates (not used with 802.11a) */ 2309 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2310 mrr.rates[i].flags = 0; 2311 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2312 /* fallback to the immediate lower CCK rate (if any) */ 2313 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2314 /* try one time at this rate before falling back to "next" */ 2315 mrr.rates[i].ntries = 1; 2316 } 2317 2318 /* OFDM rates (not used with 802.11b) */ 2319 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2320 mrr.rates[i].flags = 0; 2321 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2322 /* fallback to the immediate lower rate (if any) */ 2323 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2324 mrr.rates[i].next = (i == WPI_OFDM6) ? 2325 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2326 WPI_OFDM6 : WPI_CCK2) : 2327 i - 1; 2328 /* try one time at this rate before falling back to "next" */ 2329 mrr.rates[i].ntries = 1; 2330 } 2331 2332 /* setup MRR for control frames */ 2333 mrr.which = htole32(WPI_MRR_CTL); 2334 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2335 if (error != 0) { 2336 aprint_error_dev(sc->sc_dev, "could not setup MRR for control frames\n"); 2337 return error; 2338 } 2339 2340 /* setup MRR for data frames */ 2341 mrr.which = htole32(WPI_MRR_DATA); 2342 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2343 if (error != 0) { 2344 aprint_error_dev(sc->sc_dev, "could not setup MRR for data frames\n"); 2345 return error; 2346 } 2347 2348 return 0; 2349 } 2350 2351 static void 2352 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2353 { 2354 struct wpi_cmd_led led; 2355 2356 led.which = which; 2357 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2358 led.off = off; 2359 led.on = on; 2360 2361 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2362 } 2363 2364 static void 2365 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2366 { 2367 struct wpi_cmd_tsf tsf; 2368 uint64_t val, mod; 2369 2370 memset(&tsf, 0, sizeof tsf); 2371 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2372 tsf.bintval = htole16(ni->ni_intval); 2373 tsf.lintval = htole16(10); 2374 2375 /* compute remaining time until next beacon */ 2376 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2377 mod = le64toh(tsf.tstamp) % val; 2378 tsf.binitval = htole32((uint32_t)(val - mod)); 2379 2380 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2381 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2382 2383 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2384 aprint_error_dev(sc->sc_dev, "could not enable TSF\n"); 2385 } 2386 2387 /* 2388 * Update Tx power to match what is defined for channel `c'. 2389 */ 2390 static int 2391 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2392 { 2393 struct ieee80211com *ic = &sc->sc_ic; 2394 struct wpi_power_group *group; 2395 struct wpi_cmd_txpower txpower; 2396 u_int chan; 2397 int i; 2398 2399 /* get channel number */ 2400 chan = ieee80211_chan2ieee(ic, c); 2401 2402 /* find the power group to which this channel belongs */ 2403 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2404 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2405 if (chan <= group->chan) 2406 break; 2407 } else 2408 group = &sc->groups[0]; 2409 2410 memset(&txpower, 0, sizeof txpower); 2411 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2412 txpower.chan = htole16(chan); 2413 2414 /* set Tx power for all OFDM and CCK rates */ 2415 for (i = 0; i <= 11 ; i++) { 2416 /* retrieve Tx power for this channel/rate combination */ 2417 int idx = wpi_get_power_index(sc, group, c, 2418 wpi_ridx_to_rate[i]); 2419 2420 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2421 2422 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2423 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2424 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2425 } else { 2426 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2427 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2428 } 2429 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2430 wpi_ridx_to_rate[i], idx)); 2431 } 2432 2433 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2434 } 2435 2436 /* 2437 * Determine Tx power index for a given channel/rate combination. 2438 * This takes into account the regulatory information from EEPROM and the 2439 * current temperature. 2440 */ 2441 static int 2442 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2443 struct ieee80211_channel *c, int rate) 2444 { 2445 /* fixed-point arithmetic division using a n-bit fractional part */ 2446 #define fdivround(a, b, n) \ 2447 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2448 2449 /* linear interpolation */ 2450 #define interpolate(x, x1, y1, x2, y2, n) \ 2451 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2452 2453 struct ieee80211com *ic = &sc->sc_ic; 2454 struct wpi_power_sample *sample; 2455 int pwr, idx; 2456 u_int chan; 2457 2458 /* get channel number */ 2459 chan = ieee80211_chan2ieee(ic, c); 2460 2461 /* default power is group's maximum power - 3dB */ 2462 pwr = group->maxpwr / 2; 2463 2464 /* decrease power for highest OFDM rates to reduce distortion */ 2465 switch (rate) { 2466 case 72: /* 36Mb/s */ 2467 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2468 break; 2469 case 96: /* 48Mb/s */ 2470 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2471 break; 2472 case 108: /* 54Mb/s */ 2473 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2474 break; 2475 } 2476 2477 /* never exceed channel's maximum allowed Tx power */ 2478 pwr = min(pwr, sc->maxpwr[chan]); 2479 2480 /* retrieve power index into gain tables from samples */ 2481 for (sample = group->samples; sample < &group->samples[3]; sample++) 2482 if (pwr > sample[1].power) 2483 break; 2484 /* fixed-point linear interpolation using a 19-bit fractional part */ 2485 idx = interpolate(pwr, sample[0].power, sample[0].index, 2486 sample[1].power, sample[1].index, 19); 2487 2488 /* 2489 * Adjust power index based on current temperature: 2490 * - if cooler than factory-calibrated: decrease output power 2491 * - if warmer than factory-calibrated: increase output power 2492 */ 2493 idx -= (sc->temp - group->temp) * 11 / 100; 2494 2495 /* decrease power for CCK rates (-5dB) */ 2496 if (!WPI_RATE_IS_OFDM(rate)) 2497 idx += 10; 2498 2499 /* keep power index in a valid range */ 2500 if (idx < 0) 2501 return 0; 2502 if (idx > WPI_MAX_PWR_INDEX) 2503 return WPI_MAX_PWR_INDEX; 2504 return idx; 2505 2506 #undef interpolate 2507 #undef fdivround 2508 } 2509 2510 /* 2511 * Build a beacon frame that the firmware will broadcast periodically in 2512 * IBSS or HostAP modes. 2513 */ 2514 static int 2515 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2516 { 2517 struct ieee80211com *ic = &sc->sc_ic; 2518 struct wpi_tx_ring *ring = &sc->cmdq; 2519 struct wpi_tx_desc *desc; 2520 struct wpi_tx_data *data; 2521 struct wpi_tx_cmd *cmd; 2522 struct wpi_cmd_beacon *bcn; 2523 struct ieee80211_beacon_offsets bo; 2524 struct mbuf *m0; 2525 int error; 2526 2527 desc = &ring->desc[ring->cur]; 2528 data = &ring->data[ring->cur]; 2529 2530 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2531 if (m0 == NULL) { 2532 aprint_error_dev(sc->sc_dev, "could not allocate beacon frame\n"); 2533 return ENOMEM; 2534 } 2535 2536 cmd = &ring->cmd[ring->cur]; 2537 cmd->code = WPI_CMD_SET_BEACON; 2538 cmd->flags = 0; 2539 cmd->qid = ring->qid; 2540 cmd->idx = ring->cur; 2541 2542 bcn = (struct wpi_cmd_beacon *)cmd->data; 2543 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2544 bcn->id = WPI_ID_BROADCAST; 2545 bcn->ofdm_mask = 0xff; 2546 bcn->cck_mask = 0x0f; 2547 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2548 bcn->len = htole16(m0->m_pkthdr.len); 2549 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2550 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2551 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2552 2553 /* save and trim IEEE802.11 header */ 2554 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2555 m_adj(m0, sizeof (struct ieee80211_frame)); 2556 2557 /* assume beacon frame is contiguous */ 2558 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2559 BUS_DMA_READ | BUS_DMA_NOWAIT); 2560 if (error) { 2561 aprint_error_dev(sc->sc_dev, "could not map beacon\n"); 2562 m_freem(m0); 2563 return error; 2564 } 2565 2566 data->m = m0; 2567 2568 /* first scatter/gather segment is used by the beacon command */ 2569 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2570 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2571 ring->cur * sizeof (struct wpi_tx_cmd)); 2572 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2573 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2574 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2575 2576 /* kick cmd ring */ 2577 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2578 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2579 2580 return 0; 2581 } 2582 2583 static int 2584 wpi_auth(struct wpi_softc *sc) 2585 { 2586 struct ieee80211com *ic = &sc->sc_ic; 2587 struct ieee80211_node *ni = ic->ic_bss; 2588 struct wpi_node_info node; 2589 int error; 2590 2591 /* update adapter's configuration */ 2592 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2593 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2594 sc->config.flags = htole32(WPI_CONFIG_TSF); 2595 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2596 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2597 WPI_CONFIG_24GHZ); 2598 } 2599 switch (ic->ic_curmode) { 2600 case IEEE80211_MODE_11A: 2601 sc->config.cck_mask = 0; 2602 sc->config.ofdm_mask = 0x15; 2603 break; 2604 case IEEE80211_MODE_11B: 2605 sc->config.cck_mask = 0x03; 2606 sc->config.ofdm_mask = 0; 2607 break; 2608 default: /* assume 802.11b/g */ 2609 sc->config.cck_mask = 0x0f; 2610 sc->config.ofdm_mask = 0x15; 2611 } 2612 2613 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2614 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2615 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2616 sizeof (struct wpi_config), 1); 2617 if (error != 0) { 2618 aprint_error_dev(sc->sc_dev, "could not configure\n"); 2619 return error; 2620 } 2621 2622 /* configuration has changed, set Tx power accordingly */ 2623 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2624 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2625 return error; 2626 } 2627 2628 /* add default node */ 2629 memset(&node, 0, sizeof node); 2630 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2631 node.id = WPI_ID_BSS; 2632 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2633 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2634 node.action = htole32(WPI_ACTION_SET_RATE); 2635 node.antenna = WPI_ANTENNA_BOTH; 2636 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2637 if (error != 0) { 2638 aprint_error_dev(sc->sc_dev, "could not add BSS node\n"); 2639 return error; 2640 } 2641 2642 return 0; 2643 } 2644 2645 /* 2646 * Send a scan request to the firmware. Since this command is huge, we map it 2647 * into a mbuf instead of using the pre-allocated set of commands. 2648 */ 2649 static int 2650 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2651 { 2652 struct ieee80211com *ic = &sc->sc_ic; 2653 struct wpi_tx_ring *ring = &sc->cmdq; 2654 struct wpi_tx_desc *desc; 2655 struct wpi_tx_data *data; 2656 struct wpi_tx_cmd *cmd; 2657 struct wpi_scan_hdr *hdr; 2658 struct wpi_scan_chan *chan; 2659 struct ieee80211_frame *wh; 2660 struct ieee80211_rateset *rs; 2661 struct ieee80211_channel *c; 2662 enum ieee80211_phymode mode; 2663 uint8_t *frm; 2664 int nrates, pktlen, error; 2665 2666 desc = &ring->desc[ring->cur]; 2667 data = &ring->data[ring->cur]; 2668 2669 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2670 if (data->m == NULL) { 2671 aprint_error_dev(sc->sc_dev, 2672 "could not allocate mbuf for scan command\n"); 2673 return ENOMEM; 2674 } 2675 2676 MCLGET(data->m, M_DONTWAIT); 2677 if (!(data->m->m_flags & M_EXT)) { 2678 m_freem(data->m); 2679 data->m = NULL; 2680 aprint_error_dev(sc->sc_dev, 2681 "could not allocate mbuf for scan command\n"); 2682 return ENOMEM; 2683 } 2684 2685 cmd = mtod(data->m, struct wpi_tx_cmd *); 2686 cmd->code = WPI_CMD_SCAN; 2687 cmd->flags = 0; 2688 cmd->qid = ring->qid; 2689 cmd->idx = ring->cur; 2690 2691 hdr = (struct wpi_scan_hdr *)cmd->data; 2692 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2693 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2694 hdr->id = WPI_ID_BROADCAST; 2695 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2696 2697 /* 2698 * Move to the next channel if no packets are received within 5 msecs 2699 * after sending the probe request (this helps to reduce the duration 2700 * of active scans). 2701 */ 2702 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2703 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2704 2705 if (flags & IEEE80211_CHAN_A) { 2706 hdr->crc_threshold = htole16(1); 2707 /* send probe requests at 6Mbps */ 2708 hdr->rate = wpi_plcp_signal(12); 2709 } else { 2710 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2711 /* send probe requests at 1Mbps */ 2712 hdr->rate = wpi_plcp_signal(2); 2713 } 2714 2715 /* for directed scans, firmware inserts the essid IE itself */ 2716 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2717 hdr->essid[0].len = ic->ic_des_esslen; 2718 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2719 2720 /* 2721 * Build a probe request frame. Most of the following code is a 2722 * copy & paste of what is done in net80211. 2723 */ 2724 wh = (struct ieee80211_frame *)(hdr + 1); 2725 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2726 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2727 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2728 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2729 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2730 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2731 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2732 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2733 2734 frm = (uint8_t *)(wh + 1); 2735 2736 /* add empty essid IE (firmware generates it for directed scans) */ 2737 *frm++ = IEEE80211_ELEMID_SSID; 2738 *frm++ = 0; 2739 2740 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2741 rs = &ic->ic_sup_rates[mode]; 2742 2743 /* add supported rates IE */ 2744 *frm++ = IEEE80211_ELEMID_RATES; 2745 nrates = rs->rs_nrates; 2746 if (nrates > IEEE80211_RATE_SIZE) 2747 nrates = IEEE80211_RATE_SIZE; 2748 *frm++ = nrates; 2749 memcpy(frm, rs->rs_rates, nrates); 2750 frm += nrates; 2751 2752 /* add supported xrates IE */ 2753 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2754 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2755 *frm++ = IEEE80211_ELEMID_XRATES; 2756 *frm++ = nrates; 2757 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2758 frm += nrates; 2759 } 2760 2761 /* setup length of probe request */ 2762 hdr->paylen = htole16(frm - (uint8_t *)wh); 2763 2764 chan = (struct wpi_scan_chan *)frm; 2765 for (c = &ic->ic_channels[1]; 2766 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2767 if ((c->ic_flags & flags) != flags) 2768 continue; 2769 2770 chan->chan = ieee80211_chan2ieee(ic, c); 2771 chan->flags = 0; 2772 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2773 chan->flags |= WPI_CHAN_ACTIVE; 2774 if (ic->ic_des_esslen != 0) 2775 chan->flags |= WPI_CHAN_DIRECT; 2776 } 2777 chan->dsp_gain = 0x6e; 2778 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2779 chan->rf_gain = 0x3b; 2780 chan->active = htole16(10); 2781 chan->passive = htole16(110); 2782 } else { 2783 chan->rf_gain = 0x28; 2784 chan->active = htole16(20); 2785 chan->passive = htole16(120); 2786 } 2787 hdr->nchan++; 2788 chan++; 2789 2790 frm += sizeof (struct wpi_scan_chan); 2791 } 2792 hdr->len = htole16(frm - (uint8_t *)hdr); 2793 pktlen = frm - (uint8_t *)cmd; 2794 2795 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2796 NULL, BUS_DMA_NOWAIT); 2797 if (error) { 2798 aprint_error_dev(sc->sc_dev, "could not map scan command\n"); 2799 m_freem(data->m); 2800 data->m = NULL; 2801 return error; 2802 } 2803 2804 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2805 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2806 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2807 2808 /* kick cmd ring */ 2809 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2810 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2811 2812 return 0; /* will be notified async. of failure/success */ 2813 } 2814 2815 static int 2816 wpi_config(struct wpi_softc *sc) 2817 { 2818 struct ieee80211com *ic = &sc->sc_ic; 2819 struct ifnet *ifp = ic->ic_ifp; 2820 struct wpi_power power; 2821 struct wpi_bluetooth bluetooth; 2822 struct wpi_node_info node; 2823 int error; 2824 2825 memset(&power, 0, sizeof power); 2826 power.flags = htole32(WPI_POWER_CAM | 0x8); 2827 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2828 if (error != 0) { 2829 aprint_error_dev(sc->sc_dev, "could not set power mode\n"); 2830 return error; 2831 } 2832 2833 /* configure bluetooth coexistence */ 2834 memset(&bluetooth, 0, sizeof bluetooth); 2835 bluetooth.flags = 3; 2836 bluetooth.lead = 0xaa; 2837 bluetooth.kill = 1; 2838 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2839 0); 2840 if (error != 0) { 2841 aprint_error_dev(sc->sc_dev, 2842 "could not configure bluetooth coexistence\n"); 2843 return error; 2844 } 2845 2846 /* configure adapter */ 2847 memset(&sc->config, 0, sizeof (struct wpi_config)); 2848 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2849 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2850 /*set default channel*/ 2851 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2852 sc->config.flags = htole32(WPI_CONFIG_TSF); 2853 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2854 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2855 WPI_CONFIG_24GHZ); 2856 } 2857 sc->config.filter = 0; 2858 switch (ic->ic_opmode) { 2859 case IEEE80211_M_STA: 2860 sc->config.mode = WPI_MODE_STA; 2861 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2862 break; 2863 case IEEE80211_M_IBSS: 2864 case IEEE80211_M_AHDEMO: 2865 sc->config.mode = WPI_MODE_IBSS; 2866 break; 2867 case IEEE80211_M_HOSTAP: 2868 sc->config.mode = WPI_MODE_HOSTAP; 2869 break; 2870 case IEEE80211_M_MONITOR: 2871 sc->config.mode = WPI_MODE_MONITOR; 2872 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2873 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2874 break; 2875 } 2876 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2877 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2878 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2879 sizeof (struct wpi_config), 0); 2880 if (error != 0) { 2881 aprint_error_dev(sc->sc_dev, "configure command failed\n"); 2882 return error; 2883 } 2884 2885 /* configuration has changed, set Tx power accordingly */ 2886 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2887 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2888 return error; 2889 } 2890 2891 /* add broadcast node */ 2892 memset(&node, 0, sizeof node); 2893 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2894 node.id = WPI_ID_BROADCAST; 2895 node.rate = wpi_plcp_signal(2); 2896 node.action = htole32(WPI_ACTION_SET_RATE); 2897 node.antenna = WPI_ANTENNA_BOTH; 2898 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2899 if (error != 0) { 2900 aprint_error_dev(sc->sc_dev, "could not add broadcast node\n"); 2901 return error; 2902 } 2903 2904 if ((error = wpi_mrr_setup(sc)) != 0) { 2905 aprint_error_dev(sc->sc_dev, "could not setup MRR\n"); 2906 return error; 2907 } 2908 2909 return 0; 2910 } 2911 2912 static void 2913 wpi_stop_master(struct wpi_softc *sc) 2914 { 2915 uint32_t tmp; 2916 int ntries; 2917 2918 tmp = WPI_READ(sc, WPI_RESET); 2919 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2920 2921 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2922 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2923 return; /* already asleep */ 2924 2925 for (ntries = 0; ntries < 100; ntries++) { 2926 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2927 break; 2928 DELAY(10); 2929 } 2930 if (ntries == 100) { 2931 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 2932 } 2933 } 2934 2935 static int 2936 wpi_power_up(struct wpi_softc *sc) 2937 { 2938 uint32_t tmp; 2939 int ntries; 2940 2941 wpi_mem_lock(sc); 2942 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2943 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2944 wpi_mem_unlock(sc); 2945 2946 for (ntries = 0; ntries < 5000; ntries++) { 2947 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2948 break; 2949 DELAY(10); 2950 } 2951 if (ntries == 5000) { 2952 aprint_error_dev(sc->sc_dev, "timeout waiting for NIC to power up\n"); 2953 return ETIMEDOUT; 2954 } 2955 return 0; 2956 } 2957 2958 static int 2959 wpi_reset(struct wpi_softc *sc) 2960 { 2961 uint32_t tmp; 2962 int ntries; 2963 2964 /* clear any pending interrupts */ 2965 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2966 2967 tmp = WPI_READ(sc, WPI_PLL_CTL); 2968 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2969 2970 tmp = WPI_READ(sc, WPI_CHICKEN); 2971 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2972 2973 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2974 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2975 2976 /* wait for clock stabilization */ 2977 for (ntries = 0; ntries < 1000; ntries++) { 2978 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2979 break; 2980 DELAY(10); 2981 } 2982 if (ntries == 1000) { 2983 aprint_error_dev(sc->sc_dev, 2984 "timeout waiting for clock stabilization\n"); 2985 return ETIMEDOUT; 2986 } 2987 2988 /* initialize EEPROM */ 2989 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2990 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2991 aprint_error_dev(sc->sc_dev, "EEPROM not found\n"); 2992 return EIO; 2993 } 2994 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2995 2996 return 0; 2997 } 2998 2999 static void 3000 wpi_hw_config(struct wpi_softc *sc) 3001 { 3002 uint32_t rev, hw; 3003 3004 /* voodoo from the reference driver */ 3005 hw = WPI_READ(sc, WPI_HWCONFIG); 3006 3007 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3008 rev = PCI_REVISION(rev); 3009 if ((rev & 0xc0) == 0x40) 3010 hw |= WPI_HW_ALM_MB; 3011 else if (!(rev & 0x80)) 3012 hw |= WPI_HW_ALM_MM; 3013 3014 if (sc->cap == 0x80) 3015 hw |= WPI_HW_SKU_MRC; 3016 3017 hw &= ~WPI_HW_REV_D; 3018 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3019 hw |= WPI_HW_REV_D; 3020 3021 if (sc->type > 1) 3022 hw |= WPI_HW_TYPE_B; 3023 3024 DPRINTF(("setting h/w config %x\n", hw)); 3025 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3026 } 3027 3028 static int 3029 wpi_init(struct ifnet *ifp) 3030 { 3031 struct wpi_softc *sc = ifp->if_softc; 3032 struct ieee80211com *ic = &sc->sc_ic; 3033 uint32_t tmp; 3034 int qid, ntries, error; 3035 3036 wpi_stop(ifp,1); 3037 (void)wpi_reset(sc); 3038 3039 wpi_mem_lock(sc); 3040 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3041 DELAY(20); 3042 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3043 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3044 wpi_mem_unlock(sc); 3045 3046 (void)wpi_power_up(sc); 3047 wpi_hw_config(sc); 3048 3049 /* init Rx ring */ 3050 wpi_mem_lock(sc); 3051 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3052 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3053 offsetof(struct wpi_shared, next)); 3054 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3055 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3056 wpi_mem_unlock(sc); 3057 3058 /* init Tx rings */ 3059 wpi_mem_lock(sc); 3060 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3061 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3062 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3063 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3064 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3065 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3066 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3067 3068 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3069 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3070 3071 for (qid = 0; qid < 6; qid++) { 3072 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3073 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3074 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3075 } 3076 wpi_mem_unlock(sc); 3077 3078 /* clear "radio off" and "disable command" bits (reversed logic) */ 3079 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3080 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3081 3082 /* clear any pending interrupts */ 3083 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3084 /* enable interrupts */ 3085 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3086 3087 /* not sure why/if this is necessary... */ 3088 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3089 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3090 3091 if ((error = wpi_load_firmware(sc)) != 0) { 3092 aprint_error_dev(sc->sc_dev, "could not load firmware\n"); 3093 goto fail1; 3094 } 3095 3096 /* Check the status of the radio switch */ 3097 if (wpi_getrfkill(sc)) { 3098 aprint_error_dev(sc->sc_dev, "Radio is disabled by hardware switch\n"); 3099 error = EBUSY; 3100 goto fail1; 3101 } 3102 3103 /* wait for thermal sensors to calibrate */ 3104 for (ntries = 0; ntries < 1000; ntries++) { 3105 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3106 break; 3107 DELAY(10); 3108 } 3109 if (ntries == 1000) { 3110 aprint_error_dev(sc->sc_dev, 3111 "timeout waiting for thermal sensors calibration\n"); 3112 error = ETIMEDOUT; 3113 goto fail1; 3114 } 3115 3116 DPRINTF(("temperature %d\n", sc->temp)); 3117 3118 if ((error = wpi_config(sc)) != 0) { 3119 aprint_error_dev(sc->sc_dev, "could not configure device\n"); 3120 goto fail1; 3121 } 3122 3123 ifp->if_flags &= ~IFF_OACTIVE; 3124 ifp->if_flags |= IFF_RUNNING; 3125 3126 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3127 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3128 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3129 } 3130 else 3131 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3132 3133 return 0; 3134 3135 fail1: wpi_stop(ifp, 1); 3136 return error; 3137 } 3138 3139 3140 static void 3141 wpi_stop(struct ifnet *ifp, int disable) 3142 { 3143 struct wpi_softc *sc = ifp->if_softc; 3144 struct ieee80211com *ic = &sc->sc_ic; 3145 uint32_t tmp; 3146 int ac; 3147 3148 ifp->if_timer = sc->sc_tx_timer = 0; 3149 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3150 3151 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3152 3153 /* disable interrupts */ 3154 WPI_WRITE(sc, WPI_MASK, 0); 3155 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3156 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3157 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3158 3159 wpi_mem_lock(sc); 3160 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3161 wpi_mem_unlock(sc); 3162 3163 /* reset all Tx rings */ 3164 for (ac = 0; ac < 4; ac++) 3165 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3166 wpi_reset_tx_ring(sc, &sc->cmdq); 3167 3168 /* reset Rx ring */ 3169 wpi_reset_rx_ring(sc, &sc->rxq); 3170 3171 wpi_mem_lock(sc); 3172 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3173 wpi_mem_unlock(sc); 3174 3175 DELAY(5); 3176 3177 wpi_stop_master(sc); 3178 3179 tmp = WPI_READ(sc, WPI_RESET); 3180 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3181 } 3182 3183 static bool 3184 wpi_resume(device_t dv, const pmf_qual_t *qual) 3185 { 3186 struct wpi_softc *sc = device_private(dv); 3187 3188 (void)wpi_reset(sc); 3189 3190 return true; 3191 } 3192 3193 /* 3194 * Return whether or not the radio is enabled in hardware 3195 * (i.e. the rfkill switch is "off"). 3196 */ 3197 static int 3198 wpi_getrfkill(struct wpi_softc *sc) 3199 { 3200 uint32_t tmp; 3201 3202 wpi_mem_lock(sc); 3203 tmp = wpi_mem_read(sc, WPI_MEM_RFKILL); 3204 wpi_mem_unlock(sc); 3205 3206 return !(tmp & 0x01); 3207 } 3208 3209 static int 3210 wpi_sysctl_radio(SYSCTLFN_ARGS) 3211 { 3212 struct sysctlnode node; 3213 struct wpi_softc *sc; 3214 int val, error; 3215 3216 node = *rnode; 3217 sc = (struct wpi_softc *)node.sysctl_data; 3218 3219 val = !wpi_getrfkill(sc); 3220 3221 node.sysctl_data = &val; 3222 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 3223 3224 if (error || newp == NULL) 3225 return error; 3226 3227 return 0; 3228 } 3229 3230 static void 3231 wpi_sysctlattach(struct wpi_softc *sc) 3232 { 3233 int rc; 3234 const struct sysctlnode *rnode; 3235 const struct sysctlnode *cnode; 3236 3237 struct sysctllog **clog = &sc->sc_sysctllog; 3238 3239 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 3240 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 3241 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 3242 goto err; 3243 3244 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 3245 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 3246 SYSCTL_DESCR("wpi controls and statistics"), 3247 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 3248 goto err; 3249 3250 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3251 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 3252 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 3253 wpi_sysctl_radio, 0, sc, 0, CTL_CREATE, CTL_EOL)) != 0) 3254 goto err; 3255 3256 #ifdef WPI_DEBUG 3257 /* control debugging printfs */ 3258 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3259 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 3260 "debug", SYSCTL_DESCR("Enable debugging output"), 3261 NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 3262 goto err; 3263 #endif 3264 3265 return; 3266 err: 3267 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 3268 } 3269