if_wpi.c revision 1.47
1 /* $NetBSD: if_wpi.c,v 1.47 2010/04/05 07:20:28 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007 5 * Damien Bergamini <damien.bergamini (at) free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __KERNEL_RCSID(0, "$NetBSD: if_wpi.c,v 1.47 2010/04/05 07:20:28 joerg 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 42 #include <sys/bus.h> 43 #include <machine/endian.h> 44 #include <sys/intr.h> 45 46 #include <dev/pci/pcireg.h> 47 #include <dev/pci/pcivar.h> 48 #include <dev/pci/pcidevs.h> 49 50 #include <net/bpf.h> 51 #include <net/if.h> 52 #include <net/if_arp.h> 53 #include <net/if_dl.h> 54 #include <net/if_ether.h> 55 #include <net/if_media.h> 56 #include <net/if_types.h> 57 58 #include <net80211/ieee80211_var.h> 59 #include <net80211/ieee80211_amrr.h> 60 #include <net80211/ieee80211_radiotap.h> 61 62 #include <netinet/in.h> 63 #include <netinet/in_systm.h> 64 #include <netinet/in_var.h> 65 #include <netinet/ip.h> 66 67 #include <dev/firmload.h> 68 69 #include <dev/pci/if_wpireg.h> 70 #include <dev/pci/if_wpivar.h> 71 72 #ifdef WPI_DEBUG 73 #define DPRINTF(x) if (wpi_debug > 0) printf x 74 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 75 int wpi_debug = 1; 76 #else 77 #define DPRINTF(x) 78 #define DPRINTFN(n, x) 79 #endif 80 81 /* 82 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 83 */ 84 static const struct ieee80211_rateset wpi_rateset_11a = 85 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 86 87 static const struct ieee80211_rateset wpi_rateset_11b = 88 { 4, { 2, 4, 11, 22 } }; 89 90 static const struct ieee80211_rateset wpi_rateset_11g = 91 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 92 93 static once_t wpi_firmware_init; 94 static kmutex_t wpi_firmware_mutex; 95 static size_t wpi_firmware_users; 96 static uint8_t *wpi_firmware_image; 97 static size_t wpi_firmware_size; 98 99 static int wpi_match(device_t, cfdata_t, void *); 100 static void wpi_attach(device_t, device_t, void *); 101 static int wpi_detach(device_t , int); 102 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 103 void **, bus_size_t, bus_size_t, int); 104 static void wpi_dma_contig_free(struct wpi_dma_info *); 105 static int wpi_alloc_shared(struct wpi_softc *); 106 static void wpi_free_shared(struct wpi_softc *); 107 static int wpi_alloc_fwmem(struct wpi_softc *); 108 static void wpi_free_fwmem(struct wpi_softc *); 109 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 110 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 111 static int wpi_alloc_rpool(struct wpi_softc *); 112 static void wpi_free_rpool(struct wpi_softc *); 113 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 114 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 115 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 116 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 117 int); 118 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 119 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 120 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 121 static void wpi_newassoc(struct ieee80211_node *, int); 122 static int wpi_media_change(struct ifnet *); 123 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 124 static void wpi_fix_channel(struct ieee80211com *, struct mbuf *); 125 static void wpi_mem_lock(struct wpi_softc *); 126 static void wpi_mem_unlock(struct wpi_softc *); 127 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 128 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 129 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 130 const uint32_t *, int); 131 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 132 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 133 static int wpi_load_firmware(struct wpi_softc *); 134 static void wpi_calib_timeout(void *); 135 static void wpi_iter_func(void *, struct ieee80211_node *); 136 static void wpi_power_calibration(struct wpi_softc *, int); 137 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 138 struct wpi_rx_data *); 139 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 140 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 141 static void wpi_notif_intr(struct wpi_softc *); 142 static int wpi_intr(void *); 143 static void wpi_read_eeprom(struct wpi_softc *); 144 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 145 static void wpi_read_eeprom_group(struct wpi_softc *, int); 146 static uint8_t wpi_plcp_signal(int); 147 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 148 struct ieee80211_node *, int); 149 static void wpi_start(struct ifnet *); 150 static void wpi_watchdog(struct ifnet *); 151 static int wpi_ioctl(struct ifnet *, u_long, void *); 152 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 153 static int wpi_wme_update(struct ieee80211com *); 154 static int wpi_mrr_setup(struct wpi_softc *); 155 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 156 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 157 static int wpi_set_txpower(struct wpi_softc *, 158 struct ieee80211_channel *, int); 159 static int wpi_get_power_index(struct wpi_softc *, 160 struct wpi_power_group *, struct ieee80211_channel *, int); 161 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 162 static int wpi_auth(struct wpi_softc *); 163 static int wpi_scan(struct wpi_softc *, uint16_t); 164 static int wpi_config(struct wpi_softc *); 165 static void wpi_stop_master(struct wpi_softc *); 166 static int wpi_power_up(struct wpi_softc *); 167 static int wpi_reset(struct wpi_softc *); 168 static void wpi_hw_config(struct wpi_softc *); 169 static int wpi_init(struct ifnet *); 170 static void wpi_stop(struct ifnet *, int); 171 static bool wpi_resume(device_t, const pmf_qual_t *); 172 static int wpi_getrfkill(struct wpi_softc *); 173 static void wpi_sysctlattach(struct wpi_softc *); 174 175 CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 176 wpi_detach, NULL); 177 178 static int 179 wpi_match(device_t parent, cfdata_t match __unused, void *aux) 180 { 181 struct pci_attach_args *pa = aux; 182 183 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 184 return 0; 185 186 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 187 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 188 return 1; 189 190 return 0; 191 } 192 193 /* Base Address Register */ 194 #define WPI_PCI_BAR0 0x10 195 196 static int 197 wpi_attach_once(void) 198 { 199 mutex_init(&wpi_firmware_mutex, MUTEX_DEFAULT, IPL_NONE); 200 return 0; 201 } 202 203 static void 204 wpi_attach(device_t parent __unused, device_t self, void *aux) 205 { 206 struct wpi_softc *sc = device_private(self); 207 struct ieee80211com *ic = &sc->sc_ic; 208 struct ifnet *ifp = &sc->sc_ec.ec_if; 209 struct pci_attach_args *pa = aux; 210 const char *intrstr; 211 char devinfo[256]; 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, revision; 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_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 229 revision = PCI_REVISION(pa->pa_class); 230 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 231 232 /* enable bus-mastering */ 233 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 234 data |= PCI_COMMAND_MASTER_ENABLE; 235 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 236 237 /* map the register window */ 238 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 239 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 240 if (error != 0) { 241 aprint_error_dev(self, "could not map memory space\n"); 242 return; 243 } 244 245 sc->sc_st = memt; 246 sc->sc_sh = memh; 247 sc->sc_dmat = pa->pa_dmat; 248 249 if (pci_intr_map(pa, &ih) != 0) { 250 aprint_error_dev(self, "could not map interrupt\n"); 251 return; 252 } 253 254 intrstr = pci_intr_string(sc->sc_pct, ih); 255 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 256 if (sc->sc_ih == NULL) { 257 aprint_error_dev(self, "could not establish interrupt"); 258 if (intrstr != NULL) 259 aprint_error(" at %s", intrstr); 260 aprint_error("\n"); 261 return; 262 } 263 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 264 265 if (wpi_reset(sc) != 0) { 266 aprint_error_dev(self, "could not reset adapter\n"); 267 return; 268 } 269 270 /* 271 * Allocate DMA memory for firmware transfers. 272 */ 273 if ((error = wpi_alloc_fwmem(sc)) != 0) 274 return; 275 276 /* 277 * Allocate shared page and Tx/Rx rings. 278 */ 279 if ((error = wpi_alloc_shared(sc)) != 0) { 280 aprint_error_dev(self, "could not allocate shared area\n"); 281 goto fail1; 282 } 283 284 if ((error = wpi_alloc_rpool(sc)) != 0) { 285 aprint_error_dev(self, "could not allocate Rx buffers\n"); 286 goto fail2; 287 } 288 289 for (ac = 0; ac < 4; ac++) { 290 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 291 if (error != 0) { 292 aprint_error_dev(self, "could not allocate Tx ring %d\n", ac); 293 goto fail3; 294 } 295 } 296 297 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 298 if (error != 0) { 299 aprint_error_dev(self, "could not allocate command ring\n"); 300 goto fail3; 301 } 302 303 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 304 aprint_error_dev(self, "could not allocate Rx ring\n"); 305 goto fail4; 306 } 307 308 ic->ic_ifp = ifp; 309 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 310 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 311 ic->ic_state = IEEE80211_S_INIT; 312 313 /* set device capabilities */ 314 ic->ic_caps = 315 IEEE80211_C_IBSS | /* IBSS mode support */ 316 IEEE80211_C_WPA | /* 802.11i */ 317 IEEE80211_C_MONITOR | /* monitor mode supported */ 318 IEEE80211_C_TXPMGT | /* tx power management */ 319 IEEE80211_C_SHSLOT | /* short slot time supported */ 320 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 321 IEEE80211_C_WME; /* 802.11e */ 322 323 /* read supported channels and MAC address from EEPROM */ 324 wpi_read_eeprom(sc); 325 326 /* set supported .11a, .11b, .11g rates */ 327 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 328 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 329 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 330 331 ic->ic_ibss_chan = &ic->ic_channels[0]; 332 333 ifp->if_softc = sc; 334 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 335 ifp->if_init = wpi_init; 336 ifp->if_stop = wpi_stop; 337 ifp->if_ioctl = wpi_ioctl; 338 ifp->if_start = wpi_start; 339 ifp->if_watchdog = wpi_watchdog; 340 IFQ_SET_READY(&ifp->if_snd); 341 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 342 343 if_attach(ifp); 344 ieee80211_ifattach(ic); 345 /* override default methods */ 346 ic->ic_node_alloc = wpi_node_alloc; 347 ic->ic_newassoc = wpi_newassoc; 348 ic->ic_wme.wme_update = wpi_wme_update; 349 350 /* override state transition machine */ 351 sc->sc_newstate = ic->ic_newstate; 352 ic->ic_newstate = wpi_newstate; 353 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 354 355 sc->amrr.amrr_min_success_threshold = 1; 356 sc->amrr.amrr_max_success_threshold = 15; 357 358 wpi_sysctlattach(sc); 359 360 if (pmf_device_register(self, NULL, wpi_resume)) 361 pmf_class_network_register(self, ifp); 362 else 363 aprint_error_dev(self, "couldn't establish power handler\n"); 364 365 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 366 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 367 &sc->sc_drvbpf); 368 369 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 370 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 371 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 372 373 sc->sc_txtap_len = sizeof sc->sc_txtapu; 374 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 375 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 376 377 ieee80211_announce(ic); 378 379 return; 380 381 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 382 fail3: while (--ac >= 0) 383 wpi_free_tx_ring(sc, &sc->txq[ac]); 384 wpi_free_rpool(sc); 385 fail2: wpi_free_shared(sc); 386 fail1: wpi_free_fwmem(sc); 387 } 388 389 static int 390 wpi_detach(device_t self, int flags __unused) 391 { 392 struct wpi_softc *sc = device_private(self); 393 struct ifnet *ifp = sc->sc_ic.ic_ifp; 394 int ac; 395 396 wpi_stop(ifp, 1); 397 398 if (ifp != NULL) 399 bpf_detach(ifp); 400 ieee80211_ifdetach(&sc->sc_ic); 401 if (ifp != NULL) 402 if_detach(ifp); 403 404 for (ac = 0; ac < 4; ac++) 405 wpi_free_tx_ring(sc, &sc->txq[ac]); 406 wpi_free_tx_ring(sc, &sc->cmdq); 407 wpi_free_rx_ring(sc, &sc->rxq); 408 wpi_free_rpool(sc); 409 wpi_free_shared(sc); 410 411 if (sc->sc_ih != NULL) { 412 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 413 sc->sc_ih = NULL; 414 } 415 416 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 417 418 if (sc->fw_used) { 419 mutex_enter(&wpi_firmware_mutex); 420 if (--wpi_firmware_users == 0) 421 firmware_free(wpi_firmware_image, wpi_firmware_size); 422 mutex_exit(&wpi_firmware_mutex); 423 } 424 425 return 0; 426 } 427 428 static int 429 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 430 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 431 { 432 int nsegs, error; 433 434 dma->tag = tag; 435 dma->size = size; 436 437 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 438 if (error != 0) 439 goto fail; 440 441 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 442 flags); 443 if (error != 0) 444 goto fail; 445 446 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 447 if (error != 0) 448 goto fail; 449 450 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 451 if (error != 0) 452 goto fail; 453 454 memset(dma->vaddr, 0, size); 455 456 dma->paddr = dma->map->dm_segs[0].ds_addr; 457 if (kvap != NULL) 458 *kvap = dma->vaddr; 459 460 return 0; 461 462 fail: wpi_dma_contig_free(dma); 463 return error; 464 } 465 466 static void 467 wpi_dma_contig_free(struct wpi_dma_info *dma) 468 { 469 if (dma->map != NULL) { 470 if (dma->vaddr != NULL) { 471 bus_dmamap_unload(dma->tag, dma->map); 472 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 473 bus_dmamem_free(dma->tag, &dma->seg, 1); 474 dma->vaddr = NULL; 475 } 476 bus_dmamap_destroy(dma->tag, dma->map); 477 dma->map = NULL; 478 } 479 } 480 481 /* 482 * Allocate a shared page between host and NIC. 483 */ 484 static int 485 wpi_alloc_shared(struct wpi_softc *sc) 486 { 487 int error; 488 /* must be aligned on a 4K-page boundary */ 489 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 490 (void **)&sc->shared, sizeof (struct wpi_shared), 491 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 492 if (error != 0) 493 aprint_error_dev(sc->sc_dev, 494 "could not allocate shared area DMA memory\n"); 495 496 return error; 497 } 498 499 static void 500 wpi_free_shared(struct wpi_softc *sc) 501 { 502 wpi_dma_contig_free(&sc->shared_dma); 503 } 504 505 /* 506 * Allocate DMA-safe memory for firmware transfer. 507 */ 508 static int 509 wpi_alloc_fwmem(struct wpi_softc *sc) 510 { 511 int error; 512 /* allocate enough contiguous space to store text and data */ 513 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 514 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 515 BUS_DMA_NOWAIT); 516 517 if (error != 0) 518 aprint_error_dev(sc->sc_dev, 519 "could not allocate firmware transfer area" 520 "DMA memory\n"); 521 return error; 522 } 523 524 static void 525 wpi_free_fwmem(struct wpi_softc *sc) 526 { 527 wpi_dma_contig_free(&sc->fw_dma); 528 } 529 530 531 static struct wpi_rbuf * 532 wpi_alloc_rbuf(struct wpi_softc *sc) 533 { 534 struct wpi_rbuf *rbuf; 535 536 mutex_enter(&sc->rxq.freelist_mtx); 537 rbuf = SLIST_FIRST(&sc->rxq.freelist); 538 if (rbuf != NULL) { 539 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 540 sc->rxq.nb_free_entries --; 541 } 542 mutex_exit(&sc->rxq.freelist_mtx); 543 544 return rbuf; 545 } 546 547 /* 548 * This is called automatically by the network stack when the mbuf to which our 549 * Rx buffer is attached is freed. 550 */ 551 static void 552 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 553 { 554 struct wpi_rbuf *rbuf = arg; 555 struct wpi_softc *sc = rbuf->sc; 556 557 /* put the buffer back in the free list */ 558 559 mutex_enter(&sc->rxq.freelist_mtx); 560 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 561 mutex_exit(&sc->rxq.freelist_mtx); 562 /* No need to protect this with a mutex, see wpi_rx_intr */ 563 sc->rxq.nb_free_entries ++; 564 565 if (__predict_true(m != NULL)) 566 pool_cache_put(mb_cache, m); 567 } 568 569 static int 570 wpi_alloc_rpool(struct wpi_softc *sc) 571 { 572 struct wpi_rx_ring *ring = &sc->rxq; 573 struct wpi_rbuf *rbuf; 574 int i, error; 575 576 /* allocate a big chunk of DMA'able memory.. */ 577 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 578 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 579 if (error != 0) { 580 aprint_normal_dev(sc->sc_dev, 581 "could not allocate Rx buffers DMA memory\n"); 582 return error; 583 } 584 585 /* ..and split it into 3KB chunks */ 586 mutex_init(&ring->freelist_mtx, MUTEX_DEFAULT, IPL_NET); 587 SLIST_INIT(&ring->freelist); 588 for (i = 0; i < WPI_RBUF_COUNT; i++) { 589 rbuf = &ring->rbuf[i]; 590 rbuf->sc = sc; /* backpointer for callbacks */ 591 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 592 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 593 594 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 595 } 596 597 ring->nb_free_entries = WPI_RBUF_COUNT; 598 return 0; 599 } 600 601 static void 602 wpi_free_rpool(struct wpi_softc *sc) 603 { 604 wpi_dma_contig_free(&sc->rxq.buf_dma); 605 } 606 607 static int 608 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 609 { 610 struct wpi_rx_data *data; 611 struct wpi_rbuf *rbuf; 612 int i, error; 613 614 ring->cur = 0; 615 616 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 617 (void **)&ring->desc, 618 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 619 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 620 if (error != 0) { 621 aprint_error_dev(sc->sc_dev, "could not allocate rx ring DMA memory\n"); 622 goto fail; 623 } 624 625 /* 626 * Setup Rx buffers. 627 */ 628 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 629 data = &ring->data[i]; 630 631 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 632 if (data->m == NULL) { 633 aprint_error_dev(sc->sc_dev, "could not allocate rx mbuf\n"); 634 error = ENOMEM; 635 goto fail; 636 } 637 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 638 m_freem(data->m); 639 data->m = NULL; 640 aprint_error_dev(sc->sc_dev, "could not allocate rx cluster\n"); 641 error = ENOMEM; 642 goto fail; 643 } 644 /* attach Rx buffer to mbuf */ 645 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 646 rbuf); 647 data->m->m_flags |= M_EXT_RW; 648 649 ring->desc[i] = htole32(rbuf->paddr); 650 } 651 652 return 0; 653 654 fail: wpi_free_rx_ring(sc, ring); 655 return error; 656 } 657 658 static void 659 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 660 { 661 int ntries; 662 663 wpi_mem_lock(sc); 664 665 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 666 for (ntries = 0; ntries < 100; ntries++) { 667 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 668 break; 669 DELAY(10); 670 } 671 #ifdef WPI_DEBUG 672 if (ntries == 100 && wpi_debug > 0) 673 aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n"); 674 #endif 675 wpi_mem_unlock(sc); 676 677 ring->cur = 0; 678 } 679 680 static void 681 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 682 { 683 int i; 684 685 wpi_dma_contig_free(&ring->desc_dma); 686 687 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 688 if (ring->data[i].m != NULL) 689 m_freem(ring->data[i].m); 690 } 691 } 692 693 static int 694 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 695 int qid) 696 { 697 struct wpi_tx_data *data; 698 int i, error; 699 700 ring->qid = qid; 701 ring->count = count; 702 ring->queued = 0; 703 ring->cur = 0; 704 705 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 706 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 707 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 708 if (error != 0) { 709 aprint_error_dev(sc->sc_dev, "could not allocate tx ring DMA memory\n"); 710 goto fail; 711 } 712 713 /* update shared page with ring's base address */ 714 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 715 716 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 717 (void **)&ring->cmd, 718 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 719 if (error != 0) { 720 aprint_error_dev(sc->sc_dev, "could not allocate tx cmd DMA memory\n"); 721 goto fail; 722 } 723 724 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 725 M_NOWAIT); 726 if (ring->data == NULL) { 727 aprint_error_dev(sc->sc_dev, "could not allocate tx data slots\n"); 728 goto fail; 729 } 730 731 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 732 733 for (i = 0; i < count; i++) { 734 data = &ring->data[i]; 735 736 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 737 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 738 &data->map); 739 if (error != 0) { 740 aprint_error_dev(sc->sc_dev, "could not create tx buf DMA map\n"); 741 goto fail; 742 } 743 } 744 745 return 0; 746 747 fail: wpi_free_tx_ring(sc, ring); 748 return error; 749 } 750 751 static void 752 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 753 { 754 struct wpi_tx_data *data; 755 int i, ntries; 756 757 wpi_mem_lock(sc); 758 759 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 760 for (ntries = 0; ntries < 100; ntries++) { 761 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 762 break; 763 DELAY(10); 764 } 765 #ifdef WPI_DEBUG 766 if (ntries == 100 && wpi_debug > 0) { 767 aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n", 768 ring->qid); 769 } 770 #endif 771 wpi_mem_unlock(sc); 772 773 for (i = 0; i < ring->count; i++) { 774 data = &ring->data[i]; 775 776 if (data->m != NULL) { 777 bus_dmamap_unload(sc->sc_dmat, data->map); 778 m_freem(data->m); 779 data->m = NULL; 780 } 781 } 782 783 ring->queued = 0; 784 ring->cur = 0; 785 } 786 787 static void 788 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 789 { 790 struct wpi_tx_data *data; 791 int i; 792 793 wpi_dma_contig_free(&ring->desc_dma); 794 wpi_dma_contig_free(&ring->cmd_dma); 795 796 if (ring->data != NULL) { 797 for (i = 0; i < ring->count; i++) { 798 data = &ring->data[i]; 799 800 if (data->m != NULL) { 801 bus_dmamap_unload(sc->sc_dmat, data->map); 802 m_freem(data->m); 803 } 804 } 805 free(ring->data, M_DEVBUF); 806 } 807 } 808 809 /*ARGUSED*/ 810 static struct ieee80211_node * 811 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 812 { 813 struct wpi_node *wn; 814 815 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 816 817 return (struct ieee80211_node *)wn; 818 } 819 820 static void 821 wpi_newassoc(struct ieee80211_node *ni, int isnew) 822 { 823 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 824 int i; 825 826 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 827 828 /* set rate to some reasonable initial value */ 829 for (i = ni->ni_rates.rs_nrates - 1; 830 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 831 i--); 832 ni->ni_txrate = i; 833 } 834 835 static int 836 wpi_media_change(struct ifnet *ifp) 837 { 838 int error; 839 840 error = ieee80211_media_change(ifp); 841 if (error != ENETRESET) 842 return error; 843 844 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 845 wpi_init(ifp); 846 847 return 0; 848 } 849 850 static int 851 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 852 { 853 struct ifnet *ifp = ic->ic_ifp; 854 struct wpi_softc *sc = ifp->if_softc; 855 struct ieee80211_node *ni; 856 int error; 857 858 callout_stop(&sc->calib_to); 859 860 switch (nstate) { 861 case IEEE80211_S_SCAN: 862 863 if (sc->is_scanning) 864 break; 865 866 sc->is_scanning = true; 867 ieee80211_node_table_reset(&ic->ic_scan); 868 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 869 870 /* make the link LED blink while we're scanning */ 871 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 872 873 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 874 aprint_error_dev(sc->sc_dev, "could not initiate scan\n"); 875 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 876 return error; 877 } 878 879 ic->ic_state = nstate; 880 return 0; 881 882 case IEEE80211_S_ASSOC: 883 if (ic->ic_state != IEEE80211_S_RUN) 884 break; 885 /* FALLTHROUGH */ 886 case IEEE80211_S_AUTH: 887 sc->config.associd = 0; 888 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 889 if ((error = wpi_auth(sc)) != 0) { 890 aprint_error_dev(sc->sc_dev, 891 "could not send authentication request\n"); 892 return error; 893 } 894 break; 895 896 case IEEE80211_S_RUN: 897 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 898 /* link LED blinks while monitoring */ 899 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 900 break; 901 } 902 903 ni = ic->ic_bss; 904 905 if (ic->ic_opmode != IEEE80211_M_STA) { 906 (void) wpi_auth(sc); /* XXX */ 907 wpi_setup_beacon(sc, ni); 908 } 909 910 wpi_enable_tsf(sc, ni); 911 912 /* update adapter's configuration */ 913 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 914 /* short preamble/slot time are negotiated when associating */ 915 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 916 WPI_CONFIG_SHSLOT); 917 if (ic->ic_flags & IEEE80211_F_SHSLOT) 918 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 919 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 920 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 921 sc->config.filter |= htole32(WPI_FILTER_BSS); 922 if (ic->ic_opmode != IEEE80211_M_STA) 923 sc->config.filter |= htole32(WPI_FILTER_BEACON); 924 925 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 926 927 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 928 sc->config.flags)); 929 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 930 sizeof (struct wpi_config), 1); 931 if (error != 0) { 932 aprint_error_dev(sc->sc_dev, "could not update configuration\n"); 933 return error; 934 } 935 936 /* configuration has changed, set Tx power accordingly */ 937 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 938 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 939 return error; 940 } 941 942 if (ic->ic_opmode == IEEE80211_M_STA) { 943 /* fake a join to init the tx rate */ 944 wpi_newassoc(ni, 1); 945 } 946 947 /* start periodic calibration timer */ 948 sc->calib_cnt = 0; 949 callout_schedule(&sc->calib_to, hz/2); 950 951 /* link LED always on while associated */ 952 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 953 break; 954 955 case IEEE80211_S_INIT: 956 sc->is_scanning = false; 957 break; 958 } 959 960 return sc->sc_newstate(ic, nstate, arg); 961 } 962 963 /* 964 * XXX: Hack to set the current channel to the value advertised in beacons or 965 * probe responses. Only used during AP detection. 966 * XXX: Duplicated from if_iwi.c 967 */ 968 static void 969 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 970 { 971 struct ieee80211_frame *wh; 972 uint8_t subtype; 973 uint8_t *frm, *efrm; 974 975 wh = mtod(m, struct ieee80211_frame *); 976 977 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 978 return; 979 980 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 981 982 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 983 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 984 return; 985 986 frm = (uint8_t *)(wh + 1); 987 efrm = mtod(m, uint8_t *) + m->m_len; 988 989 frm += 12; /* skip tstamp, bintval and capinfo fields */ 990 while (frm < efrm) { 991 if (*frm == IEEE80211_ELEMID_DSPARMS) 992 #if IEEE80211_CHAN_MAX < 255 993 if (frm[2] <= IEEE80211_CHAN_MAX) 994 #endif 995 ic->ic_curchan = &ic->ic_channels[frm[2]]; 996 997 frm += frm[1] + 2; 998 } 999 } 1000 1001 /* 1002 * Grab exclusive access to NIC memory. 1003 */ 1004 static void 1005 wpi_mem_lock(struct wpi_softc *sc) 1006 { 1007 uint32_t tmp; 1008 int ntries; 1009 1010 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1011 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1012 1013 /* spin until we actually get the lock */ 1014 for (ntries = 0; ntries < 1000; ntries++) { 1015 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1016 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1017 break; 1018 DELAY(10); 1019 } 1020 if (ntries == 1000) 1021 aprint_error_dev(sc->sc_dev, "could not lock memory\n"); 1022 } 1023 1024 /* 1025 * Release lock on NIC memory. 1026 */ 1027 static void 1028 wpi_mem_unlock(struct wpi_softc *sc) 1029 { 1030 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1031 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1032 } 1033 1034 static uint32_t 1035 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1036 { 1037 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1038 return WPI_READ(sc, WPI_READ_MEM_DATA); 1039 } 1040 1041 static void 1042 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1043 { 1044 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1045 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1046 } 1047 1048 static void 1049 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1050 const uint32_t *data, int wlen) 1051 { 1052 for (; wlen > 0; wlen--, data++, addr += 4) 1053 wpi_mem_write(sc, addr, *data); 1054 } 1055 1056 1057 /* 1058 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1059 * instead of using the traditional bit-bang method. 1060 */ 1061 static int 1062 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1063 { 1064 uint8_t *out = data; 1065 uint32_t val; 1066 int ntries; 1067 1068 wpi_mem_lock(sc); 1069 for (; len > 0; len -= 2, addr++) { 1070 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1071 1072 for (ntries = 0; ntries < 10; ntries++) { 1073 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1074 WPI_EEPROM_READY) 1075 break; 1076 DELAY(5); 1077 } 1078 if (ntries == 10) { 1079 aprint_error_dev(sc->sc_dev, "could not read EEPROM\n"); 1080 return ETIMEDOUT; 1081 } 1082 *out++ = val >> 16; 1083 if (len > 1) 1084 *out++ = val >> 24; 1085 } 1086 wpi_mem_unlock(sc); 1087 1088 return 0; 1089 } 1090 1091 /* 1092 * The firmware boot code is small and is intended to be copied directly into 1093 * the NIC internal memory. 1094 */ 1095 int 1096 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1097 { 1098 int ntries; 1099 1100 size /= sizeof (uint32_t); 1101 1102 wpi_mem_lock(sc); 1103 1104 /* copy microcode image into NIC memory */ 1105 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1106 (const uint32_t *)ucode, size); 1107 1108 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1109 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1110 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1111 1112 /* run microcode */ 1113 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1114 1115 /* wait for transfer to complete */ 1116 for (ntries = 0; ntries < 1000; ntries++) { 1117 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1118 break; 1119 DELAY(10); 1120 } 1121 if (ntries == 1000) { 1122 wpi_mem_unlock(sc); 1123 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1124 return ETIMEDOUT; 1125 } 1126 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1127 1128 wpi_mem_unlock(sc); 1129 1130 return 0; 1131 } 1132 1133 static int 1134 wpi_cache_firmware(struct wpi_softc *sc) 1135 { 1136 firmware_handle_t fw; 1137 int error; 1138 1139 if (sc->fw_used) 1140 return 0; 1141 1142 mutex_enter(&wpi_firmware_mutex); 1143 if (wpi_firmware_users++) { 1144 mutex_exit(&wpi_firmware_mutex); 1145 return 0; 1146 } 1147 1148 /* load firmware image from disk */ 1149 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1150 aprint_error_dev(sc->sc_dev, "could not read firmware file\n"); 1151 goto fail1; 1152 } 1153 1154 wpi_firmware_size = firmware_get_size(fw); 1155 1156 if (wpi_firmware_size > sizeof (struct wpi_firmware_hdr) + 1157 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ + 1158 WPI_FW_INIT_TEXT_MAXSZ + WPI_FW_INIT_DATA_MAXSZ + 1159 WPI_FW_BOOT_TEXT_MAXSZ) { 1160 aprint_error_dev(sc->sc_dev, "invalid firmware file\n"); 1161 error = EFBIG; 1162 goto fail1; 1163 } 1164 1165 if (wpi_firmware_size < sizeof (struct wpi_firmware_hdr)) { 1166 aprint_error_dev(sc->sc_dev, 1167 "truncated firmware header: %zu bytes\n", 1168 wpi_firmware_size); 1169 error = EINVAL; 1170 goto fail2; 1171 } 1172 1173 wpi_firmware_image = firmware_malloc(wpi_firmware_size); 1174 if (wpi_firmware_image == NULL) { 1175 aprint_error_dev(sc->sc_dev, "not enough memory to stock firmware\n"); 1176 error = ENOMEM; 1177 goto fail1; 1178 } 1179 1180 if ((error = firmware_read(fw, 0, wpi_firmware_image, wpi_firmware_size)) != 0) { 1181 aprint_error_dev(sc->sc_dev, "can't get firmware\n"); 1182 goto fail2; 1183 } 1184 1185 sc->fw_used = true; 1186 firmware_close(fw); 1187 mutex_exit(&wpi_firmware_mutex); 1188 1189 return 0; 1190 1191 fail2: 1192 firmware_free(wpi_firmware_image, wpi_firmware_size); 1193 fail1: 1194 firmware_close(fw); 1195 if (--wpi_firmware_users == 0) 1196 firmware_free(wpi_firmware_image, wpi_firmware_size); 1197 mutex_exit(&wpi_firmware_mutex); 1198 return error; 1199 } 1200 1201 static int 1202 wpi_load_firmware(struct wpi_softc *sc) 1203 { 1204 struct wpi_dma_info *dma = &sc->fw_dma; 1205 struct wpi_firmware_hdr hdr; 1206 const uint8_t *init_text, *init_data, *main_text, *main_data; 1207 const uint8_t *boot_text; 1208 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1209 uint32_t boot_textsz; 1210 int error; 1211 1212 if ((error = wpi_cache_firmware(sc)) != 0) 1213 return error; 1214 1215 memcpy(&hdr, wpi_firmware_image, sizeof(hdr)); 1216 1217 main_textsz = le32toh(hdr.main_textsz); 1218 main_datasz = le32toh(hdr.main_datasz); 1219 init_textsz = le32toh(hdr.init_textsz); 1220 init_datasz = le32toh(hdr.init_datasz); 1221 boot_textsz = le32toh(hdr.boot_textsz); 1222 1223 /* sanity-check firmware segments sizes */ 1224 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1225 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1226 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1227 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1228 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1229 (boot_textsz & 3) != 0) { 1230 aprint_error_dev(sc->sc_dev, "invalid firmware header\n"); 1231 error = EINVAL; 1232 goto free_firmware; 1233 } 1234 1235 /* check that all firmware segments are present */ 1236 if (wpi_firmware_size < 1237 sizeof (struct wpi_firmware_hdr) + main_textsz + 1238 main_datasz + init_textsz + init_datasz + boot_textsz) { 1239 aprint_error_dev(sc->sc_dev, 1240 "firmware file too short: %zu bytes\n", wpi_firmware_size); 1241 error = EINVAL; 1242 goto free_firmware; 1243 } 1244 1245 /* get pointers to firmware segments */ 1246 main_text = wpi_firmware_image + sizeof (struct wpi_firmware_hdr); 1247 main_data = main_text + main_textsz; 1248 init_text = main_data + main_datasz; 1249 init_data = init_text + init_textsz; 1250 boot_text = init_data + init_datasz; 1251 1252 /* copy initialization images into pre-allocated DMA-safe memory */ 1253 memcpy(dma->vaddr, init_data, init_datasz); 1254 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1255 1256 /* tell adapter where to find initialization images */ 1257 wpi_mem_lock(sc); 1258 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1259 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1260 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1261 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1262 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1263 wpi_mem_unlock(sc); 1264 1265 /* load firmware boot code */ 1266 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1267 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1268 return error; 1269 } 1270 1271 /* now press "execute" ;-) */ 1272 WPI_WRITE(sc, WPI_RESET, 0); 1273 1274 /* ..and wait at most one second for adapter to initialize */ 1275 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1276 /* this isn't what was supposed to happen.. */ 1277 aprint_error_dev(sc->sc_dev, 1278 "timeout waiting for adapter to initialize\n"); 1279 } 1280 1281 /* copy runtime images into pre-allocated DMA-safe memory */ 1282 memcpy(dma->vaddr, main_data, main_datasz); 1283 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1284 1285 /* tell adapter where to find runtime images */ 1286 wpi_mem_lock(sc); 1287 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1288 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1289 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1290 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1291 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1292 wpi_mem_unlock(sc); 1293 1294 /* wait at most one second for second alive notification */ 1295 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1296 /* this isn't what was supposed to happen.. */ 1297 aprint_error_dev(sc->sc_dev, 1298 "timeout waiting for adapter to initialize\n"); 1299 } 1300 1301 return error; 1302 1303 free_firmware: 1304 mutex_enter(&wpi_firmware_mutex); 1305 sc->fw_used = false; 1306 --wpi_firmware_users; 1307 mutex_exit(&wpi_firmware_mutex); 1308 return error; 1309 } 1310 1311 static void 1312 wpi_calib_timeout(void *arg) 1313 { 1314 struct wpi_softc *sc = arg; 1315 struct ieee80211com *ic = &sc->sc_ic; 1316 int temp, s; 1317 1318 /* automatic rate control triggered every 500ms */ 1319 if (ic->ic_fixed_rate == -1) { 1320 s = splnet(); 1321 if (ic->ic_opmode == IEEE80211_M_STA) 1322 wpi_iter_func(sc, ic->ic_bss); 1323 else 1324 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1325 splx(s); 1326 } 1327 1328 /* update sensor data */ 1329 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1330 1331 /* automatic power calibration every 60s */ 1332 if (++sc->calib_cnt >= 120) { 1333 wpi_power_calibration(sc, temp); 1334 sc->calib_cnt = 0; 1335 } 1336 1337 callout_schedule(&sc->calib_to, hz/2); 1338 } 1339 1340 static void 1341 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1342 { 1343 struct wpi_softc *sc = arg; 1344 struct wpi_node *wn = (struct wpi_node *)ni; 1345 1346 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1347 } 1348 1349 /* 1350 * This function is called periodically (every 60 seconds) to adjust output 1351 * power to temperature changes. 1352 */ 1353 void 1354 wpi_power_calibration(struct wpi_softc *sc, int temp) 1355 { 1356 /* sanity-check read value */ 1357 if (temp < -260 || temp > 25) { 1358 /* this can't be correct, ignore */ 1359 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1360 return; 1361 } 1362 1363 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1364 1365 /* adjust Tx power if need be */ 1366 if (abs(temp - sc->temp) <= 6) 1367 return; 1368 1369 sc->temp = temp; 1370 1371 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1372 /* just warn, too bad for the automatic calibration... */ 1373 aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n"); 1374 } 1375 } 1376 1377 static void 1378 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1379 struct wpi_rx_data *data) 1380 { 1381 struct ieee80211com *ic = &sc->sc_ic; 1382 struct ifnet *ifp = ic->ic_ifp; 1383 struct wpi_rx_ring *ring = &sc->rxq; 1384 struct wpi_rx_stat *stat; 1385 struct wpi_rx_head *head; 1386 struct wpi_rx_tail *tail; 1387 struct wpi_rbuf *rbuf; 1388 struct ieee80211_frame *wh; 1389 struct ieee80211_node *ni; 1390 struct mbuf *m, *mnew; 1391 int data_off ; 1392 1393 stat = (struct wpi_rx_stat *)(desc + 1); 1394 1395 if (stat->len > WPI_STAT_MAXLEN) { 1396 aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n"); 1397 ifp->if_ierrors++; 1398 return; 1399 } 1400 1401 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1402 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1403 1404 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1405 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1406 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1407 le64toh(tail->tstamp))); 1408 1409 /* 1410 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1411 * to radiotap in monitor mode). 1412 */ 1413 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1414 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1415 ifp->if_ierrors++; 1416 return; 1417 } 1418 1419 /* Compute where are the useful datas */ 1420 data_off = (char*)(head + 1) - mtod(data->m, char*); 1421 1422 /* 1423 * If the number of free entry is too low 1424 * just dup the data->m socket and reuse the same rbuf entry 1425 * Note that thi test is not protected by a mutex because the 1426 * only path that causes nb_free_entries to decrease is through 1427 * this interrupt routine, which is not re-entrent. 1428 * What may not be obvious is that the safe path is if that test 1429 * evaluates as true, so nb_free_entries can grow any time. 1430 */ 1431 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1432 1433 /* Prepare the mbuf for the m_dup */ 1434 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1435 data->m->m_data = (char*) data->m->m_data + data_off; 1436 1437 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1438 1439 /* Restore the m_data pointer for future use */ 1440 data->m->m_data = (char*) data->m->m_data - data_off; 1441 1442 if (m == NULL) { 1443 ifp->if_ierrors++; 1444 return; 1445 } 1446 } else { 1447 1448 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1449 if (mnew == NULL) { 1450 ifp->if_ierrors++; 1451 return; 1452 } 1453 1454 rbuf = wpi_alloc_rbuf(sc); 1455 KASSERT(rbuf != NULL); 1456 1457 /* attach Rx buffer to mbuf */ 1458 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1459 rbuf); 1460 mnew->m_flags |= M_EXT_RW; 1461 1462 m = data->m; 1463 data->m = mnew; 1464 1465 /* update Rx descriptor */ 1466 ring->desc[ring->cur] = htole32(rbuf->paddr); 1467 1468 m->m_data = (char*)m->m_data + data_off; 1469 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1470 } 1471 1472 /* finalize mbuf */ 1473 m->m_pkthdr.rcvif = ifp; 1474 1475 if (ic->ic_state == IEEE80211_S_SCAN) 1476 wpi_fix_channel(ic, m); 1477 1478 if (sc->sc_drvbpf != NULL) { 1479 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1480 1481 tap->wr_flags = 0; 1482 tap->wr_chan_freq = 1483 htole16(ic->ic_channels[head->chan].ic_freq); 1484 tap->wr_chan_flags = 1485 htole16(ic->ic_channels[head->chan].ic_flags); 1486 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1487 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1488 tap->wr_tsft = tail->tstamp; 1489 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1490 switch (head->rate) { 1491 /* CCK rates */ 1492 case 10: tap->wr_rate = 2; break; 1493 case 20: tap->wr_rate = 4; break; 1494 case 55: tap->wr_rate = 11; break; 1495 case 110: tap->wr_rate = 22; break; 1496 /* OFDM rates */ 1497 case 0xd: tap->wr_rate = 12; break; 1498 case 0xf: tap->wr_rate = 18; break; 1499 case 0x5: tap->wr_rate = 24; break; 1500 case 0x7: tap->wr_rate = 36; break; 1501 case 0x9: tap->wr_rate = 48; break; 1502 case 0xb: tap->wr_rate = 72; break; 1503 case 0x1: tap->wr_rate = 96; break; 1504 case 0x3: tap->wr_rate = 108; break; 1505 /* unknown rate: should not happen */ 1506 default: tap->wr_rate = 0; 1507 } 1508 if (le16toh(head->flags) & 0x4) 1509 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1510 1511 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1512 } 1513 1514 /* grab a reference to the source node */ 1515 wh = mtod(m, struct ieee80211_frame *); 1516 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1517 1518 /* send the frame to the 802.11 layer */ 1519 ieee80211_input(ic, m, ni, stat->rssi, 0); 1520 1521 /* release node reference */ 1522 ieee80211_free_node(ni); 1523 } 1524 1525 static void 1526 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1527 { 1528 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1529 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1530 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1531 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1532 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1533 1534 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1535 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1536 stat->nkill, stat->rate, le32toh(stat->duration), 1537 le32toh(stat->status))); 1538 1539 /* 1540 * Update rate control statistics for the node. 1541 * XXX we should not count mgmt frames since they're always sent at 1542 * the lowest available bit-rate. 1543 */ 1544 wn->amn.amn_txcnt++; 1545 if (stat->ntries > 0) { 1546 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1547 wn->amn.amn_retrycnt++; 1548 } 1549 1550 if ((le32toh(stat->status) & 0xff) != 1) 1551 ifp->if_oerrors++; 1552 else 1553 ifp->if_opackets++; 1554 1555 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1556 m_freem(txdata->m); 1557 txdata->m = NULL; 1558 ieee80211_free_node(txdata->ni); 1559 txdata->ni = NULL; 1560 1561 ring->queued--; 1562 1563 sc->sc_tx_timer = 0; 1564 ifp->if_flags &= ~IFF_OACTIVE; 1565 wpi_start(ifp); 1566 } 1567 1568 static void 1569 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1570 { 1571 struct wpi_tx_ring *ring = &sc->cmdq; 1572 struct wpi_tx_data *data; 1573 1574 if ((desc->qid & 7) != 4) 1575 return; /* not a command ack */ 1576 1577 data = &ring->data[desc->idx]; 1578 1579 /* if the command was mapped in a mbuf, free it */ 1580 if (data->m != NULL) { 1581 bus_dmamap_unload(sc->sc_dmat, data->map); 1582 m_freem(data->m); 1583 data->m = NULL; 1584 } 1585 1586 wakeup(&ring->cmd[desc->idx]); 1587 } 1588 1589 static void 1590 wpi_notif_intr(struct wpi_softc *sc) 1591 { 1592 struct ieee80211com *ic = &sc->sc_ic; 1593 struct ifnet *ifp = ic->ic_ifp; 1594 struct wpi_rx_desc *desc; 1595 struct wpi_rx_data *data; 1596 uint32_t hw; 1597 1598 hw = le32toh(sc->shared->next); 1599 while (sc->rxq.cur != hw) { 1600 data = &sc->rxq.data[sc->rxq.cur]; 1601 1602 desc = mtod(data->m, struct wpi_rx_desc *); 1603 1604 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1605 "len=%d\n", desc->qid, desc->idx, desc->flags, 1606 desc->type, le32toh(desc->len))); 1607 1608 if (!(desc->qid & 0x80)) /* reply to a command */ 1609 wpi_cmd_intr(sc, desc); 1610 1611 switch (desc->type) { 1612 case WPI_RX_DONE: 1613 /* a 802.11 frame was received */ 1614 wpi_rx_intr(sc, desc, data); 1615 break; 1616 1617 case WPI_TX_DONE: 1618 /* a 802.11 frame has been transmitted */ 1619 wpi_tx_intr(sc, desc); 1620 break; 1621 1622 case WPI_UC_READY: 1623 { 1624 struct wpi_ucode_info *uc = 1625 (struct wpi_ucode_info *)(desc + 1); 1626 1627 /* the microcontroller is ready */ 1628 DPRINTF(("microcode alive notification version %x " 1629 "alive %x\n", le32toh(uc->version), 1630 le32toh(uc->valid))); 1631 1632 if (le32toh(uc->valid) != 1) { 1633 aprint_error_dev(sc->sc_dev, 1634 "microcontroller initialization failed\n"); 1635 } 1636 break; 1637 } 1638 case WPI_STATE_CHANGED: 1639 { 1640 uint32_t *status = (uint32_t *)(desc + 1); 1641 1642 /* enabled/disabled notification */ 1643 DPRINTF(("state changed to %x\n", le32toh(*status))); 1644 1645 if (le32toh(*status) & 1) { 1646 /* the radio button has to be pushed */ 1647 aprint_error_dev(sc->sc_dev, "Radio transmitter is off\n"); 1648 /* turn the interface down */ 1649 ifp->if_flags &= ~IFF_UP; 1650 wpi_stop(ifp, 1); 1651 return; /* no further processing */ 1652 } 1653 break; 1654 } 1655 case WPI_START_SCAN: 1656 { 1657 struct wpi_start_scan *scan = 1658 (struct wpi_start_scan *)(desc + 1); 1659 1660 DPRINTFN(2, ("scanning channel %d status %x\n", 1661 scan->chan, le32toh(scan->status))); 1662 1663 /* fix current channel */ 1664 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1665 break; 1666 } 1667 case WPI_STOP_SCAN: 1668 { 1669 struct wpi_stop_scan *scan = 1670 (struct wpi_stop_scan *)(desc + 1); 1671 1672 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1673 scan->nchan, scan->status, scan->chan)); 1674 1675 if (scan->status == 1 && scan->chan <= 14) { 1676 /* 1677 * We just finished scanning 802.11g channels, 1678 * start scanning 802.11a ones. 1679 */ 1680 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1681 break; 1682 } 1683 sc->is_scanning = false; 1684 ieee80211_end_scan(ic); 1685 break; 1686 } 1687 } 1688 1689 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1690 } 1691 1692 /* tell the firmware what we have processed */ 1693 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1694 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1695 } 1696 1697 static int 1698 wpi_intr(void *arg) 1699 { 1700 struct wpi_softc *sc = arg; 1701 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1702 uint32_t r; 1703 1704 r = WPI_READ(sc, WPI_INTR); 1705 if (r == 0 || r == 0xffffffff) 1706 return 0; /* not for us */ 1707 1708 DPRINTFN(5, ("interrupt reg %x\n", r)); 1709 1710 /* disable interrupts */ 1711 WPI_WRITE(sc, WPI_MASK, 0); 1712 /* ack interrupts */ 1713 WPI_WRITE(sc, WPI_INTR, r); 1714 1715 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1716 aprint_error_dev(sc->sc_dev, "fatal firmware error\n"); 1717 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1718 wpi_stop(sc->sc_ic.ic_ifp, 1); 1719 return 1; 1720 } 1721 1722 if (r & WPI_RX_INTR) 1723 wpi_notif_intr(sc); 1724 1725 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1726 wakeup(sc); 1727 1728 /* re-enable interrupts */ 1729 if (ifp->if_flags & IFF_UP) 1730 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1731 1732 return 1; 1733 } 1734 1735 static uint8_t 1736 wpi_plcp_signal(int rate) 1737 { 1738 switch (rate) { 1739 /* CCK rates (returned values are device-dependent) */ 1740 case 2: return 10; 1741 case 4: return 20; 1742 case 11: return 55; 1743 case 22: return 110; 1744 1745 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1746 /* R1-R4, (u)ral is R4-R1 */ 1747 case 12: return 0xd; 1748 case 18: return 0xf; 1749 case 24: return 0x5; 1750 case 36: return 0x7; 1751 case 48: return 0x9; 1752 case 72: return 0xb; 1753 case 96: return 0x1; 1754 case 108: return 0x3; 1755 1756 /* unsupported rates (should not get there) */ 1757 default: return 0; 1758 } 1759 } 1760 1761 /* quickly determine if a given rate is CCK or OFDM */ 1762 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1763 1764 static int 1765 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1766 int ac) 1767 { 1768 struct ieee80211com *ic = &sc->sc_ic; 1769 struct wpi_tx_ring *ring = &sc->txq[ac]; 1770 struct wpi_tx_desc *desc; 1771 struct wpi_tx_data *data; 1772 struct wpi_tx_cmd *cmd; 1773 struct wpi_cmd_data *tx; 1774 struct ieee80211_frame *wh; 1775 struct ieee80211_key *k; 1776 const struct chanAccParams *cap; 1777 struct mbuf *mnew; 1778 int i, error, rate, hdrlen, noack = 0; 1779 1780 desc = &ring->desc[ring->cur]; 1781 data = &ring->data[ring->cur]; 1782 1783 wh = mtod(m0, struct ieee80211_frame *); 1784 1785 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1786 cap = &ic->ic_wme.wme_chanParams; 1787 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1788 } 1789 1790 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1791 k = ieee80211_crypto_encap(ic, ni, m0); 1792 if (k == NULL) { 1793 m_freem(m0); 1794 return ENOBUFS; 1795 } 1796 1797 /* packet header may have moved, reset our local pointer */ 1798 wh = mtod(m0, struct ieee80211_frame *); 1799 } 1800 1801 hdrlen = ieee80211_anyhdrsize(wh); 1802 1803 /* pickup a rate */ 1804 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1805 IEEE80211_FC0_TYPE_MGT) { 1806 /* mgmt frames are sent at the lowest available bit-rate */ 1807 rate = ni->ni_rates.rs_rates[0]; 1808 } else { 1809 if (ic->ic_fixed_rate != -1) { 1810 rate = ic->ic_sup_rates[ic->ic_curmode]. 1811 rs_rates[ic->ic_fixed_rate]; 1812 } else 1813 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1814 } 1815 rate &= IEEE80211_RATE_VAL; 1816 1817 1818 if (sc->sc_drvbpf != NULL) { 1819 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1820 1821 tap->wt_flags = 0; 1822 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1823 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1824 tap->wt_rate = rate; 1825 tap->wt_hwqueue = ac; 1826 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1827 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1828 1829 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1830 } 1831 1832 cmd = &ring->cmd[ring->cur]; 1833 cmd->code = WPI_CMD_TX_DATA; 1834 cmd->flags = 0; 1835 cmd->qid = ring->qid; 1836 cmd->idx = ring->cur; 1837 1838 tx = (struct wpi_cmd_data *)cmd->data; 1839 tx->flags = 0; 1840 1841 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1842 tx->flags |= htole32(WPI_TX_NEED_ACK); 1843 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1844 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1845 1846 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1847 1848 /* retrieve destination node's id */ 1849 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1850 WPI_ID_BSS; 1851 1852 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1853 IEEE80211_FC0_TYPE_MGT) { 1854 /* tell h/w to set timestamp in probe responses */ 1855 if ((wh->i_fc[0] & 1856 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1857 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1858 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1859 1860 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1861 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1862 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1863 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1864 tx->timeout = htole16(3); 1865 else 1866 tx->timeout = htole16(2); 1867 } else 1868 tx->timeout = htole16(0); 1869 1870 tx->rate = wpi_plcp_signal(rate); 1871 1872 /* be very persistant at sending frames out */ 1873 tx->rts_ntries = 7; 1874 tx->data_ntries = 15; 1875 1876 tx->ofdm_mask = 0xff; 1877 tx->cck_mask = 0xf; 1878 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1879 1880 tx->len = htole16(m0->m_pkthdr.len); 1881 1882 /* save and trim IEEE802.11 header */ 1883 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 1884 m_adj(m0, hdrlen); 1885 1886 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1887 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1888 if (error != 0 && error != EFBIG) { 1889 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", error); 1890 m_freem(m0); 1891 return error; 1892 } 1893 if (error != 0) { 1894 /* too many fragments, linearize */ 1895 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1896 if (mnew == NULL) { 1897 m_freem(m0); 1898 return ENOMEM; 1899 } 1900 1901 M_COPY_PKTHDR(mnew, m0); 1902 if (m0->m_pkthdr.len > MHLEN) { 1903 MCLGET(mnew, M_DONTWAIT); 1904 if (!(mnew->m_flags & M_EXT)) { 1905 m_freem(m0); 1906 m_freem(mnew); 1907 return ENOMEM; 1908 } 1909 } 1910 1911 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1912 m_freem(m0); 1913 mnew->m_len = mnew->m_pkthdr.len; 1914 m0 = mnew; 1915 1916 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1917 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1918 if (error != 0) { 1919 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 1920 error); 1921 m_freem(m0); 1922 return error; 1923 } 1924 } 1925 1926 data->m = m0; 1927 data->ni = ni; 1928 1929 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1930 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1931 1932 /* first scatter/gather segment is used by the tx data command */ 1933 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1934 (1 + data->map->dm_nsegs) << 24); 1935 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1936 ring->cur * sizeof (struct wpi_tx_cmd)); 1937 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 1938 ((hdrlen + 3) & ~3)); 1939 1940 for (i = 1; i <= data->map->dm_nsegs; i++) { 1941 desc->segs[i].addr = 1942 htole32(data->map->dm_segs[i - 1].ds_addr); 1943 desc->segs[i].len = 1944 htole32(data->map->dm_segs[i - 1].ds_len); 1945 } 1946 1947 ring->queued++; 1948 1949 /* kick ring */ 1950 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1951 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1952 1953 return 0; 1954 } 1955 1956 static void 1957 wpi_start(struct ifnet *ifp) 1958 { 1959 struct wpi_softc *sc = ifp->if_softc; 1960 struct ieee80211com *ic = &sc->sc_ic; 1961 struct ieee80211_node *ni; 1962 struct ether_header *eh; 1963 struct mbuf *m0; 1964 int ac; 1965 1966 /* 1967 * net80211 may still try to send management frames even if the 1968 * IFF_RUNNING flag is not set... 1969 */ 1970 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1971 return; 1972 1973 for (;;) { 1974 IF_DEQUEUE(&ic->ic_mgtq, m0); 1975 if (m0 != NULL) { 1976 1977 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1978 m0->m_pkthdr.rcvif = NULL; 1979 1980 /* management frames go into ring 0 */ 1981 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1982 ifp->if_oerrors++; 1983 continue; 1984 } 1985 bpf_mtap3(ic->ic_rawbpf, m0); 1986 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1987 ifp->if_oerrors++; 1988 break; 1989 } 1990 } else { 1991 if (ic->ic_state != IEEE80211_S_RUN) 1992 break; 1993 IFQ_POLL(&ifp->if_snd, m0); 1994 if (m0 == NULL) 1995 break; 1996 1997 if (m0->m_len < sizeof (*eh) && 1998 (m0 = m_pullup(m0, sizeof (*eh))) == NULL) { 1999 ifp->if_oerrors++; 2000 continue; 2001 } 2002 eh = mtod(m0, struct ether_header *); 2003 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2004 if (ni == NULL) { 2005 m_freem(m0); 2006 ifp->if_oerrors++; 2007 continue; 2008 } 2009 2010 /* classify mbuf so we can find which tx ring to use */ 2011 if (ieee80211_classify(ic, m0, ni) != 0) { 2012 m_freem(m0); 2013 ieee80211_free_node(ni); 2014 ifp->if_oerrors++; 2015 continue; 2016 } 2017 2018 /* no QoS encapsulation for EAPOL frames */ 2019 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2020 M_WME_GETAC(m0) : WME_AC_BE; 2021 2022 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2023 /* there is no place left in this ring */ 2024 ifp->if_flags |= IFF_OACTIVE; 2025 break; 2026 } 2027 IFQ_DEQUEUE(&ifp->if_snd, m0); 2028 bpf_mtap(ifp, m0); 2029 m0 = ieee80211_encap(ic, m0, ni); 2030 if (m0 == NULL) { 2031 ieee80211_free_node(ni); 2032 ifp->if_oerrors++; 2033 continue; 2034 } 2035 bpf_mtap3(ic->ic_rawbpf, m0); 2036 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2037 ieee80211_free_node(ni); 2038 ifp->if_oerrors++; 2039 break; 2040 } 2041 } 2042 2043 sc->sc_tx_timer = 5; 2044 ifp->if_timer = 1; 2045 } 2046 } 2047 2048 static void 2049 wpi_watchdog(struct ifnet *ifp) 2050 { 2051 struct wpi_softc *sc = ifp->if_softc; 2052 2053 ifp->if_timer = 0; 2054 2055 if (sc->sc_tx_timer > 0) { 2056 if (--sc->sc_tx_timer == 0) { 2057 aprint_error_dev(sc->sc_dev, "device timeout\n"); 2058 ifp->if_oerrors++; 2059 ifp->if_flags &= ~IFF_UP; 2060 wpi_stop(ifp, 1); 2061 return; 2062 } 2063 ifp->if_timer = 1; 2064 } 2065 2066 ieee80211_watchdog(&sc->sc_ic); 2067 } 2068 2069 static int 2070 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2071 { 2072 #define IS_RUNNING(ifp) \ 2073 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2074 2075 struct wpi_softc *sc = ifp->if_softc; 2076 struct ieee80211com *ic = &sc->sc_ic; 2077 int s, error = 0; 2078 2079 s = splnet(); 2080 2081 switch (cmd) { 2082 case SIOCSIFFLAGS: 2083 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 2084 break; 2085 if (ifp->if_flags & IFF_UP) { 2086 if (!(ifp->if_flags & IFF_RUNNING)) 2087 wpi_init(ifp); 2088 } else { 2089 if (ifp->if_flags & IFF_RUNNING) 2090 wpi_stop(ifp, 1); 2091 } 2092 break; 2093 2094 case SIOCADDMULTI: 2095 case SIOCDELMULTI: 2096 /* XXX no h/w multicast filter? --dyoung */ 2097 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2098 /* setup multicast filter, etc */ 2099 error = 0; 2100 } 2101 break; 2102 2103 default: 2104 error = ieee80211_ioctl(ic, cmd, data); 2105 } 2106 2107 if (error == ENETRESET) { 2108 if (IS_RUNNING(ifp) && 2109 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2110 wpi_init(ifp); 2111 error = 0; 2112 } 2113 2114 splx(s); 2115 return error; 2116 2117 #undef IS_RUNNING 2118 } 2119 2120 /* 2121 * Extract various information from EEPROM. 2122 */ 2123 static void 2124 wpi_read_eeprom(struct wpi_softc *sc) 2125 { 2126 struct ieee80211com *ic = &sc->sc_ic; 2127 char domain[4]; 2128 int i; 2129 2130 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2131 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2132 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2133 2134 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2135 sc->type)); 2136 2137 /* read and print regulatory domain */ 2138 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2139 aprint_normal_dev(sc->sc_dev, "%.4s", domain); 2140 2141 /* read and print MAC address */ 2142 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2143 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2144 2145 /* read the list of authorized channels */ 2146 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2147 wpi_read_eeprom_channels(sc, i); 2148 2149 /* read the list of power groups */ 2150 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2151 wpi_read_eeprom_group(sc, i); 2152 } 2153 2154 static void 2155 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2156 { 2157 struct ieee80211com *ic = &sc->sc_ic; 2158 const struct wpi_chan_band *band = &wpi_bands[n]; 2159 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2160 int chan, i; 2161 2162 wpi_read_prom_data(sc, band->addr, channels, 2163 band->nchan * sizeof (struct wpi_eeprom_chan)); 2164 2165 for (i = 0; i < band->nchan; i++) { 2166 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2167 continue; 2168 2169 chan = band->chan[i]; 2170 2171 if (n == 0) { /* 2GHz band */ 2172 ic->ic_channels[chan].ic_freq = 2173 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2174 ic->ic_channels[chan].ic_flags = 2175 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2176 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2177 2178 } else { /* 5GHz band */ 2179 /* 2180 * Some 3945abg adapters support channels 7, 8, 11 2181 * and 12 in the 2GHz *and* 5GHz bands. 2182 * Because of limitations in our net80211(9) stack, 2183 * we can't support these channels in 5GHz band. 2184 */ 2185 if (chan <= 14) 2186 continue; 2187 2188 ic->ic_channels[chan].ic_freq = 2189 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2190 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2191 } 2192 2193 /* is active scan allowed on this channel? */ 2194 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2195 ic->ic_channels[chan].ic_flags |= 2196 IEEE80211_CHAN_PASSIVE; 2197 } 2198 2199 /* save maximum allowed power for this channel */ 2200 sc->maxpwr[chan] = channels[i].maxpwr; 2201 2202 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2203 chan, channels[i].flags, sc->maxpwr[chan])); 2204 } 2205 } 2206 2207 static void 2208 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2209 { 2210 struct wpi_power_group *group = &sc->groups[n]; 2211 struct wpi_eeprom_group rgroup; 2212 int i; 2213 2214 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2215 sizeof rgroup); 2216 2217 /* save power group information */ 2218 group->chan = rgroup.chan; 2219 group->maxpwr = rgroup.maxpwr; 2220 /* temperature at which the samples were taken */ 2221 group->temp = (int16_t)le16toh(rgroup.temp); 2222 2223 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2224 group->chan, group->maxpwr, group->temp)); 2225 2226 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2227 group->samples[i].index = rgroup.samples[i].index; 2228 group->samples[i].power = rgroup.samples[i].power; 2229 2230 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2231 group->samples[i].index, group->samples[i].power)); 2232 } 2233 } 2234 2235 /* 2236 * Send a command to the firmware. 2237 */ 2238 static int 2239 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2240 { 2241 struct wpi_tx_ring *ring = &sc->cmdq; 2242 struct wpi_tx_desc *desc; 2243 struct wpi_tx_cmd *cmd; 2244 2245 KASSERT(size <= sizeof cmd->data); 2246 2247 desc = &ring->desc[ring->cur]; 2248 cmd = &ring->cmd[ring->cur]; 2249 2250 cmd->code = code; 2251 cmd->flags = 0; 2252 cmd->qid = ring->qid; 2253 cmd->idx = ring->cur; 2254 memcpy(cmd->data, buf, size); 2255 2256 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2257 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2258 ring->cur * sizeof (struct wpi_tx_cmd)); 2259 desc->segs[0].len = htole32(4 + size); 2260 2261 /* kick cmd ring */ 2262 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2263 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2264 2265 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2266 } 2267 2268 static int 2269 wpi_wme_update(struct ieee80211com *ic) 2270 { 2271 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2272 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2273 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2274 const struct wmeParams *wmep; 2275 struct wpi_wme_setup wme; 2276 int ac; 2277 2278 /* don't override default WME values if WME is not actually enabled */ 2279 if (!(ic->ic_flags & IEEE80211_F_WME)) 2280 return 0; 2281 2282 wme.flags = 0; 2283 for (ac = 0; ac < WME_NUM_AC; ac++) { 2284 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2285 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2286 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2287 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2288 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2289 2290 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2291 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2292 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2293 } 2294 2295 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2296 #undef WPI_USEC 2297 #undef WPI_EXP2 2298 } 2299 2300 /* 2301 * Configure h/w multi-rate retries. 2302 */ 2303 static int 2304 wpi_mrr_setup(struct wpi_softc *sc) 2305 { 2306 struct ieee80211com *ic = &sc->sc_ic; 2307 struct wpi_mrr_setup mrr; 2308 int i, error; 2309 2310 /* CCK rates (not used with 802.11a) */ 2311 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2312 mrr.rates[i].flags = 0; 2313 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2314 /* fallback to the immediate lower CCK rate (if any) */ 2315 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2316 /* try one time at this rate before falling back to "next" */ 2317 mrr.rates[i].ntries = 1; 2318 } 2319 2320 /* OFDM rates (not used with 802.11b) */ 2321 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2322 mrr.rates[i].flags = 0; 2323 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2324 /* fallback to the immediate lower rate (if any) */ 2325 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2326 mrr.rates[i].next = (i == WPI_OFDM6) ? 2327 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2328 WPI_OFDM6 : WPI_CCK2) : 2329 i - 1; 2330 /* try one time at this rate before falling back to "next" */ 2331 mrr.rates[i].ntries = 1; 2332 } 2333 2334 /* setup MRR for control frames */ 2335 mrr.which = htole32(WPI_MRR_CTL); 2336 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2337 if (error != 0) { 2338 aprint_error_dev(sc->sc_dev, "could not setup MRR for control frames\n"); 2339 return error; 2340 } 2341 2342 /* setup MRR for data frames */ 2343 mrr.which = htole32(WPI_MRR_DATA); 2344 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2345 if (error != 0) { 2346 aprint_error_dev(sc->sc_dev, "could not setup MRR for data frames\n"); 2347 return error; 2348 } 2349 2350 return 0; 2351 } 2352 2353 static void 2354 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2355 { 2356 struct wpi_cmd_led led; 2357 2358 led.which = which; 2359 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2360 led.off = off; 2361 led.on = on; 2362 2363 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2364 } 2365 2366 static void 2367 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2368 { 2369 struct wpi_cmd_tsf tsf; 2370 uint64_t val, mod; 2371 2372 memset(&tsf, 0, sizeof tsf); 2373 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2374 tsf.bintval = htole16(ni->ni_intval); 2375 tsf.lintval = htole16(10); 2376 2377 /* compute remaining time until next beacon */ 2378 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2379 mod = le64toh(tsf.tstamp) % val; 2380 tsf.binitval = htole32((uint32_t)(val - mod)); 2381 2382 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2383 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2384 2385 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2386 aprint_error_dev(sc->sc_dev, "could not enable TSF\n"); 2387 } 2388 2389 /* 2390 * Update Tx power to match what is defined for channel `c'. 2391 */ 2392 static int 2393 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2394 { 2395 struct ieee80211com *ic = &sc->sc_ic; 2396 struct wpi_power_group *group; 2397 struct wpi_cmd_txpower txpower; 2398 u_int chan; 2399 int i; 2400 2401 /* get channel number */ 2402 chan = ieee80211_chan2ieee(ic, c); 2403 2404 /* find the power group to which this channel belongs */ 2405 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2406 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2407 if (chan <= group->chan) 2408 break; 2409 } else 2410 group = &sc->groups[0]; 2411 2412 memset(&txpower, 0, sizeof txpower); 2413 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2414 txpower.chan = htole16(chan); 2415 2416 /* set Tx power for all OFDM and CCK rates */ 2417 for (i = 0; i <= 11 ; i++) { 2418 /* retrieve Tx power for this channel/rate combination */ 2419 int idx = wpi_get_power_index(sc, group, c, 2420 wpi_ridx_to_rate[i]); 2421 2422 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2423 2424 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2425 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2426 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2427 } else { 2428 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2429 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2430 } 2431 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2432 wpi_ridx_to_rate[i], idx)); 2433 } 2434 2435 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2436 } 2437 2438 /* 2439 * Determine Tx power index for a given channel/rate combination. 2440 * This takes into account the regulatory information from EEPROM and the 2441 * current temperature. 2442 */ 2443 static int 2444 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2445 struct ieee80211_channel *c, int rate) 2446 { 2447 /* fixed-point arithmetic division using a n-bit fractional part */ 2448 #define fdivround(a, b, n) \ 2449 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2450 2451 /* linear interpolation */ 2452 #define interpolate(x, x1, y1, x2, y2, n) \ 2453 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2454 2455 struct ieee80211com *ic = &sc->sc_ic; 2456 struct wpi_power_sample *sample; 2457 int pwr, idx; 2458 u_int chan; 2459 2460 /* get channel number */ 2461 chan = ieee80211_chan2ieee(ic, c); 2462 2463 /* default power is group's maximum power - 3dB */ 2464 pwr = group->maxpwr / 2; 2465 2466 /* decrease power for highest OFDM rates to reduce distortion */ 2467 switch (rate) { 2468 case 72: /* 36Mb/s */ 2469 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2470 break; 2471 case 96: /* 48Mb/s */ 2472 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2473 break; 2474 case 108: /* 54Mb/s */ 2475 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2476 break; 2477 } 2478 2479 /* never exceed channel's maximum allowed Tx power */ 2480 pwr = min(pwr, sc->maxpwr[chan]); 2481 2482 /* retrieve power index into gain tables from samples */ 2483 for (sample = group->samples; sample < &group->samples[3]; sample++) 2484 if (pwr > sample[1].power) 2485 break; 2486 /* fixed-point linear interpolation using a 19-bit fractional part */ 2487 idx = interpolate(pwr, sample[0].power, sample[0].index, 2488 sample[1].power, sample[1].index, 19); 2489 2490 /* 2491 * Adjust power index based on current temperature: 2492 * - if cooler than factory-calibrated: decrease output power 2493 * - if warmer than factory-calibrated: increase output power 2494 */ 2495 idx -= (sc->temp - group->temp) * 11 / 100; 2496 2497 /* decrease power for CCK rates (-5dB) */ 2498 if (!WPI_RATE_IS_OFDM(rate)) 2499 idx += 10; 2500 2501 /* keep power index in a valid range */ 2502 if (idx < 0) 2503 return 0; 2504 if (idx > WPI_MAX_PWR_INDEX) 2505 return WPI_MAX_PWR_INDEX; 2506 return idx; 2507 2508 #undef interpolate 2509 #undef fdivround 2510 } 2511 2512 /* 2513 * Build a beacon frame that the firmware will broadcast periodically in 2514 * IBSS or HostAP modes. 2515 */ 2516 static int 2517 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2518 { 2519 struct ieee80211com *ic = &sc->sc_ic; 2520 struct wpi_tx_ring *ring = &sc->cmdq; 2521 struct wpi_tx_desc *desc; 2522 struct wpi_tx_data *data; 2523 struct wpi_tx_cmd *cmd; 2524 struct wpi_cmd_beacon *bcn; 2525 struct ieee80211_beacon_offsets bo; 2526 struct mbuf *m0; 2527 int error; 2528 2529 desc = &ring->desc[ring->cur]; 2530 data = &ring->data[ring->cur]; 2531 2532 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2533 if (m0 == NULL) { 2534 aprint_error_dev(sc->sc_dev, "could not allocate beacon frame\n"); 2535 return ENOMEM; 2536 } 2537 2538 cmd = &ring->cmd[ring->cur]; 2539 cmd->code = WPI_CMD_SET_BEACON; 2540 cmd->flags = 0; 2541 cmd->qid = ring->qid; 2542 cmd->idx = ring->cur; 2543 2544 bcn = (struct wpi_cmd_beacon *)cmd->data; 2545 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2546 bcn->id = WPI_ID_BROADCAST; 2547 bcn->ofdm_mask = 0xff; 2548 bcn->cck_mask = 0x0f; 2549 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2550 bcn->len = htole16(m0->m_pkthdr.len); 2551 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2552 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2553 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2554 2555 /* save and trim IEEE802.11 header */ 2556 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2557 m_adj(m0, sizeof (struct ieee80211_frame)); 2558 2559 /* assume beacon frame is contiguous */ 2560 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2561 BUS_DMA_READ | BUS_DMA_NOWAIT); 2562 if (error) { 2563 aprint_error_dev(sc->sc_dev, "could not map beacon\n"); 2564 m_freem(m0); 2565 return error; 2566 } 2567 2568 data->m = m0; 2569 2570 /* first scatter/gather segment is used by the beacon command */ 2571 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2572 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2573 ring->cur * sizeof (struct wpi_tx_cmd)); 2574 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2575 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2576 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2577 2578 /* kick cmd ring */ 2579 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2580 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2581 2582 return 0; 2583 } 2584 2585 static int 2586 wpi_auth(struct wpi_softc *sc) 2587 { 2588 struct ieee80211com *ic = &sc->sc_ic; 2589 struct ieee80211_node *ni = ic->ic_bss; 2590 struct wpi_node_info node; 2591 int error; 2592 2593 /* update adapter's configuration */ 2594 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2595 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2596 sc->config.flags = htole32(WPI_CONFIG_TSF); 2597 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2598 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2599 WPI_CONFIG_24GHZ); 2600 } 2601 switch (ic->ic_curmode) { 2602 case IEEE80211_MODE_11A: 2603 sc->config.cck_mask = 0; 2604 sc->config.ofdm_mask = 0x15; 2605 break; 2606 case IEEE80211_MODE_11B: 2607 sc->config.cck_mask = 0x03; 2608 sc->config.ofdm_mask = 0; 2609 break; 2610 default: /* assume 802.11b/g */ 2611 sc->config.cck_mask = 0x0f; 2612 sc->config.ofdm_mask = 0x15; 2613 } 2614 2615 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2616 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2617 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2618 sizeof (struct wpi_config), 1); 2619 if (error != 0) { 2620 aprint_error_dev(sc->sc_dev, "could not configure\n"); 2621 return error; 2622 } 2623 2624 /* configuration has changed, set Tx power accordingly */ 2625 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2626 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2627 return error; 2628 } 2629 2630 /* add default node */ 2631 memset(&node, 0, sizeof node); 2632 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2633 node.id = WPI_ID_BSS; 2634 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2635 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2636 node.action = htole32(WPI_ACTION_SET_RATE); 2637 node.antenna = WPI_ANTENNA_BOTH; 2638 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2639 if (error != 0) { 2640 aprint_error_dev(sc->sc_dev, "could not add BSS node\n"); 2641 return error; 2642 } 2643 2644 return 0; 2645 } 2646 2647 /* 2648 * Send a scan request to the firmware. Since this command is huge, we map it 2649 * into a mbuf instead of using the pre-allocated set of commands. 2650 */ 2651 static int 2652 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2653 { 2654 struct ieee80211com *ic = &sc->sc_ic; 2655 struct wpi_tx_ring *ring = &sc->cmdq; 2656 struct wpi_tx_desc *desc; 2657 struct wpi_tx_data *data; 2658 struct wpi_tx_cmd *cmd; 2659 struct wpi_scan_hdr *hdr; 2660 struct wpi_scan_chan *chan; 2661 struct ieee80211_frame *wh; 2662 struct ieee80211_rateset *rs; 2663 struct ieee80211_channel *c; 2664 enum ieee80211_phymode mode; 2665 uint8_t *frm; 2666 int nrates, pktlen, error; 2667 2668 desc = &ring->desc[ring->cur]; 2669 data = &ring->data[ring->cur]; 2670 2671 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2672 if (data->m == NULL) { 2673 aprint_error_dev(sc->sc_dev, 2674 "could not allocate mbuf for scan command\n"); 2675 return ENOMEM; 2676 } 2677 2678 MCLGET(data->m, M_DONTWAIT); 2679 if (!(data->m->m_flags & M_EXT)) { 2680 m_freem(data->m); 2681 data->m = NULL; 2682 aprint_error_dev(sc->sc_dev, 2683 "could not allocate mbuf for scan command\n"); 2684 return ENOMEM; 2685 } 2686 2687 cmd = mtod(data->m, struct wpi_tx_cmd *); 2688 cmd->code = WPI_CMD_SCAN; 2689 cmd->flags = 0; 2690 cmd->qid = ring->qid; 2691 cmd->idx = ring->cur; 2692 2693 hdr = (struct wpi_scan_hdr *)cmd->data; 2694 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2695 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2696 hdr->id = WPI_ID_BROADCAST; 2697 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2698 2699 /* 2700 * Move to the next channel if no packets are received within 5 msecs 2701 * after sending the probe request (this helps to reduce the duration 2702 * of active scans). 2703 */ 2704 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2705 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2706 2707 if (flags & IEEE80211_CHAN_A) { 2708 hdr->crc_threshold = htole16(1); 2709 /* send probe requests at 6Mbps */ 2710 hdr->rate = wpi_plcp_signal(12); 2711 } else { 2712 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2713 /* send probe requests at 1Mbps */ 2714 hdr->rate = wpi_plcp_signal(2); 2715 } 2716 2717 /* for directed scans, firmware inserts the essid IE itself */ 2718 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2719 hdr->essid[0].len = ic->ic_des_esslen; 2720 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2721 2722 /* 2723 * Build a probe request frame. Most of the following code is a 2724 * copy & paste of what is done in net80211. 2725 */ 2726 wh = (struct ieee80211_frame *)(hdr + 1); 2727 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2728 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2729 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2730 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2731 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2732 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2733 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2734 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2735 2736 frm = (uint8_t *)(wh + 1); 2737 2738 /* add empty essid IE (firmware generates it for directed scans) */ 2739 *frm++ = IEEE80211_ELEMID_SSID; 2740 *frm++ = 0; 2741 2742 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2743 rs = &ic->ic_sup_rates[mode]; 2744 2745 /* add supported rates IE */ 2746 *frm++ = IEEE80211_ELEMID_RATES; 2747 nrates = rs->rs_nrates; 2748 if (nrates > IEEE80211_RATE_SIZE) 2749 nrates = IEEE80211_RATE_SIZE; 2750 *frm++ = nrates; 2751 memcpy(frm, rs->rs_rates, nrates); 2752 frm += nrates; 2753 2754 /* add supported xrates IE */ 2755 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2756 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2757 *frm++ = IEEE80211_ELEMID_XRATES; 2758 *frm++ = nrates; 2759 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2760 frm += nrates; 2761 } 2762 2763 /* setup length of probe request */ 2764 hdr->paylen = htole16(frm - (uint8_t *)wh); 2765 2766 chan = (struct wpi_scan_chan *)frm; 2767 for (c = &ic->ic_channels[1]; 2768 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2769 if ((c->ic_flags & flags) != flags) 2770 continue; 2771 2772 chan->chan = ieee80211_chan2ieee(ic, c); 2773 chan->flags = 0; 2774 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2775 chan->flags |= WPI_CHAN_ACTIVE; 2776 if (ic->ic_des_esslen != 0) 2777 chan->flags |= WPI_CHAN_DIRECT; 2778 } 2779 chan->dsp_gain = 0x6e; 2780 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2781 chan->rf_gain = 0x3b; 2782 chan->active = htole16(10); 2783 chan->passive = htole16(110); 2784 } else { 2785 chan->rf_gain = 0x28; 2786 chan->active = htole16(20); 2787 chan->passive = htole16(120); 2788 } 2789 hdr->nchan++; 2790 chan++; 2791 2792 frm += sizeof (struct wpi_scan_chan); 2793 } 2794 hdr->len = htole16(frm - (uint8_t *)hdr); 2795 pktlen = frm - (uint8_t *)cmd; 2796 2797 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2798 NULL, BUS_DMA_NOWAIT); 2799 if (error) { 2800 aprint_error_dev(sc->sc_dev, "could not map scan command\n"); 2801 m_freem(data->m); 2802 data->m = NULL; 2803 return error; 2804 } 2805 2806 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2807 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2808 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2809 2810 /* kick cmd ring */ 2811 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2812 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2813 2814 return 0; /* will be notified async. of failure/success */ 2815 } 2816 2817 static int 2818 wpi_config(struct wpi_softc *sc) 2819 { 2820 struct ieee80211com *ic = &sc->sc_ic; 2821 struct ifnet *ifp = ic->ic_ifp; 2822 struct wpi_power power; 2823 struct wpi_bluetooth bluetooth; 2824 struct wpi_node_info node; 2825 int error; 2826 2827 memset(&power, 0, sizeof power); 2828 power.flags = htole32(WPI_POWER_CAM | 0x8); 2829 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2830 if (error != 0) { 2831 aprint_error_dev(sc->sc_dev, "could not set power mode\n"); 2832 return error; 2833 } 2834 2835 /* configure bluetooth coexistence */ 2836 memset(&bluetooth, 0, sizeof bluetooth); 2837 bluetooth.flags = 3; 2838 bluetooth.lead = 0xaa; 2839 bluetooth.kill = 1; 2840 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2841 0); 2842 if (error != 0) { 2843 aprint_error_dev(sc->sc_dev, 2844 "could not configure bluetooth coexistence\n"); 2845 return error; 2846 } 2847 2848 /* configure adapter */ 2849 memset(&sc->config, 0, sizeof (struct wpi_config)); 2850 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2851 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2852 /*set default channel*/ 2853 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2854 sc->config.flags = htole32(WPI_CONFIG_TSF); 2855 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2856 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2857 WPI_CONFIG_24GHZ); 2858 } 2859 sc->config.filter = 0; 2860 switch (ic->ic_opmode) { 2861 case IEEE80211_M_STA: 2862 sc->config.mode = WPI_MODE_STA; 2863 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2864 break; 2865 case IEEE80211_M_IBSS: 2866 case IEEE80211_M_AHDEMO: 2867 sc->config.mode = WPI_MODE_IBSS; 2868 break; 2869 case IEEE80211_M_HOSTAP: 2870 sc->config.mode = WPI_MODE_HOSTAP; 2871 break; 2872 case IEEE80211_M_MONITOR: 2873 sc->config.mode = WPI_MODE_MONITOR; 2874 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2875 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2876 break; 2877 } 2878 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2879 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2880 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2881 sizeof (struct wpi_config), 0); 2882 if (error != 0) { 2883 aprint_error_dev(sc->sc_dev, "configure command failed\n"); 2884 return error; 2885 } 2886 2887 /* configuration has changed, set Tx power accordingly */ 2888 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2889 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2890 return error; 2891 } 2892 2893 /* add broadcast node */ 2894 memset(&node, 0, sizeof node); 2895 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2896 node.id = WPI_ID_BROADCAST; 2897 node.rate = wpi_plcp_signal(2); 2898 node.action = htole32(WPI_ACTION_SET_RATE); 2899 node.antenna = WPI_ANTENNA_BOTH; 2900 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2901 if (error != 0) { 2902 aprint_error_dev(sc->sc_dev, "could not add broadcast node\n"); 2903 return error; 2904 } 2905 2906 if ((error = wpi_mrr_setup(sc)) != 0) { 2907 aprint_error_dev(sc->sc_dev, "could not setup MRR\n"); 2908 return error; 2909 } 2910 2911 return 0; 2912 } 2913 2914 static void 2915 wpi_stop_master(struct wpi_softc *sc) 2916 { 2917 uint32_t tmp; 2918 int ntries; 2919 2920 tmp = WPI_READ(sc, WPI_RESET); 2921 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2922 2923 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2924 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2925 return; /* already asleep */ 2926 2927 for (ntries = 0; ntries < 100; ntries++) { 2928 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2929 break; 2930 DELAY(10); 2931 } 2932 if (ntries == 100) { 2933 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 2934 } 2935 } 2936 2937 static int 2938 wpi_power_up(struct wpi_softc *sc) 2939 { 2940 uint32_t tmp; 2941 int ntries; 2942 2943 wpi_mem_lock(sc); 2944 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2945 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2946 wpi_mem_unlock(sc); 2947 2948 for (ntries = 0; ntries < 5000; ntries++) { 2949 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2950 break; 2951 DELAY(10); 2952 } 2953 if (ntries == 5000) { 2954 aprint_error_dev(sc->sc_dev, "timeout waiting for NIC to power up\n"); 2955 return ETIMEDOUT; 2956 } 2957 return 0; 2958 } 2959 2960 static int 2961 wpi_reset(struct wpi_softc *sc) 2962 { 2963 uint32_t tmp; 2964 int ntries; 2965 2966 /* clear any pending interrupts */ 2967 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2968 2969 tmp = WPI_READ(sc, WPI_PLL_CTL); 2970 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2971 2972 tmp = WPI_READ(sc, WPI_CHICKEN); 2973 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2974 2975 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2976 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2977 2978 /* wait for clock stabilization */ 2979 for (ntries = 0; ntries < 1000; ntries++) { 2980 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2981 break; 2982 DELAY(10); 2983 } 2984 if (ntries == 1000) { 2985 aprint_error_dev(sc->sc_dev, 2986 "timeout waiting for clock stabilization\n"); 2987 return ETIMEDOUT; 2988 } 2989 2990 /* initialize EEPROM */ 2991 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2992 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2993 aprint_error_dev(sc->sc_dev, "EEPROM not found\n"); 2994 return EIO; 2995 } 2996 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2997 2998 return 0; 2999 } 3000 3001 static void 3002 wpi_hw_config(struct wpi_softc *sc) 3003 { 3004 uint32_t rev, hw; 3005 3006 /* voodoo from the reference driver */ 3007 hw = WPI_READ(sc, WPI_HWCONFIG); 3008 3009 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3010 rev = PCI_REVISION(rev); 3011 if ((rev & 0xc0) == 0x40) 3012 hw |= WPI_HW_ALM_MB; 3013 else if (!(rev & 0x80)) 3014 hw |= WPI_HW_ALM_MM; 3015 3016 if (sc->cap == 0x80) 3017 hw |= WPI_HW_SKU_MRC; 3018 3019 hw &= ~WPI_HW_REV_D; 3020 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3021 hw |= WPI_HW_REV_D; 3022 3023 if (sc->type > 1) 3024 hw |= WPI_HW_TYPE_B; 3025 3026 DPRINTF(("setting h/w config %x\n", hw)); 3027 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3028 } 3029 3030 static int 3031 wpi_init(struct ifnet *ifp) 3032 { 3033 struct wpi_softc *sc = ifp->if_softc; 3034 struct ieee80211com *ic = &sc->sc_ic; 3035 uint32_t tmp; 3036 int qid, ntries, error; 3037 3038 wpi_stop(ifp,1); 3039 (void)wpi_reset(sc); 3040 3041 wpi_mem_lock(sc); 3042 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3043 DELAY(20); 3044 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3045 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3046 wpi_mem_unlock(sc); 3047 3048 (void)wpi_power_up(sc); 3049 wpi_hw_config(sc); 3050 3051 /* init Rx ring */ 3052 wpi_mem_lock(sc); 3053 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3054 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3055 offsetof(struct wpi_shared, next)); 3056 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3057 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3058 wpi_mem_unlock(sc); 3059 3060 /* init Tx rings */ 3061 wpi_mem_lock(sc); 3062 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3063 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3064 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3065 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3066 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3067 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3068 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3069 3070 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3071 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3072 3073 for (qid = 0; qid < 6; qid++) { 3074 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3075 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3076 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3077 } 3078 wpi_mem_unlock(sc); 3079 3080 /* clear "radio off" and "disable command" bits (reversed logic) */ 3081 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3082 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3083 3084 /* clear any pending interrupts */ 3085 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3086 /* enable interrupts */ 3087 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3088 3089 /* not sure why/if this is necessary... */ 3090 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3091 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3092 3093 if ((error = wpi_load_firmware(sc)) != 0) { 3094 aprint_error_dev(sc->sc_dev, "could not load firmware\n"); 3095 goto fail1; 3096 } 3097 3098 /* Check the status of the radio switch */ 3099 if (wpi_getrfkill(sc)) { 3100 aprint_error_dev(sc->sc_dev, "Radio is disabled by hardware switch\n"); 3101 error = EBUSY; 3102 goto fail1; 3103 } 3104 3105 /* wait for thermal sensors to calibrate */ 3106 for (ntries = 0; ntries < 1000; ntries++) { 3107 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3108 break; 3109 DELAY(10); 3110 } 3111 if (ntries == 1000) { 3112 aprint_error_dev(sc->sc_dev, 3113 "timeout waiting for thermal sensors calibration\n"); 3114 error = ETIMEDOUT; 3115 goto fail1; 3116 } 3117 3118 DPRINTF(("temperature %d\n", sc->temp)); 3119 3120 if ((error = wpi_config(sc)) != 0) { 3121 aprint_error_dev(sc->sc_dev, "could not configure device\n"); 3122 goto fail1; 3123 } 3124 3125 ifp->if_flags &= ~IFF_OACTIVE; 3126 ifp->if_flags |= IFF_RUNNING; 3127 3128 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3129 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3130 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3131 } 3132 else 3133 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3134 3135 return 0; 3136 3137 fail1: wpi_stop(ifp, 1); 3138 return error; 3139 } 3140 3141 3142 static void 3143 wpi_stop(struct ifnet *ifp, int disable) 3144 { 3145 struct wpi_softc *sc = ifp->if_softc; 3146 struct ieee80211com *ic = &sc->sc_ic; 3147 uint32_t tmp; 3148 int ac; 3149 3150 ifp->if_timer = sc->sc_tx_timer = 0; 3151 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3152 3153 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3154 3155 /* disable interrupts */ 3156 WPI_WRITE(sc, WPI_MASK, 0); 3157 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3158 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3159 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3160 3161 wpi_mem_lock(sc); 3162 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3163 wpi_mem_unlock(sc); 3164 3165 /* reset all Tx rings */ 3166 for (ac = 0; ac < 4; ac++) 3167 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3168 wpi_reset_tx_ring(sc, &sc->cmdq); 3169 3170 /* reset Rx ring */ 3171 wpi_reset_rx_ring(sc, &sc->rxq); 3172 3173 wpi_mem_lock(sc); 3174 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3175 wpi_mem_unlock(sc); 3176 3177 DELAY(5); 3178 3179 wpi_stop_master(sc); 3180 3181 tmp = WPI_READ(sc, WPI_RESET); 3182 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3183 } 3184 3185 static bool 3186 wpi_resume(device_t dv, const pmf_qual_t *qual) 3187 { 3188 struct wpi_softc *sc = device_private(dv); 3189 3190 (void)wpi_reset(sc); 3191 3192 return true; 3193 } 3194 3195 /* 3196 * Return whether or not the radio is enabled in hardware 3197 * (i.e. the rfkill switch is "off"). 3198 */ 3199 static int 3200 wpi_getrfkill(struct wpi_softc *sc) 3201 { 3202 uint32_t tmp; 3203 3204 wpi_mem_lock(sc); 3205 tmp = wpi_mem_read(sc, WPI_MEM_RFKILL); 3206 wpi_mem_unlock(sc); 3207 3208 return !(tmp & 0x01); 3209 } 3210 3211 static int 3212 wpi_sysctl_radio(SYSCTLFN_ARGS) 3213 { 3214 struct sysctlnode node; 3215 struct wpi_softc *sc; 3216 int val, error; 3217 3218 node = *rnode; 3219 sc = (struct wpi_softc *)node.sysctl_data; 3220 3221 val = !wpi_getrfkill(sc); 3222 3223 node.sysctl_data = &val; 3224 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 3225 3226 if (error || newp == NULL) 3227 return error; 3228 3229 return 0; 3230 } 3231 3232 static void 3233 wpi_sysctlattach(struct wpi_softc *sc) 3234 { 3235 int rc; 3236 const struct sysctlnode *rnode; 3237 const struct sysctlnode *cnode; 3238 3239 struct sysctllog **clog = &sc->sc_sysctllog; 3240 3241 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 3242 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 3243 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 3244 goto err; 3245 3246 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 3247 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 3248 SYSCTL_DESCR("wpi controls and statistics"), 3249 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 3250 goto err; 3251 3252 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3253 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 3254 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 3255 wpi_sysctl_radio, 0, sc, 0, CTL_CREATE, CTL_EOL)) != 0) 3256 goto err; 3257 3258 #ifdef WPI_DEBUG 3259 /* control debugging printfs */ 3260 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3261 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 3262 "debug", SYSCTL_DESCR("Enable debugging output"), 3263 NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 3264 goto err; 3265 #endif 3266 3267 return; 3268 err: 3269 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 3270 } 3271
Indexes created Mon Sep 29 03:10:08 GMT 2025