if_wpi.c revision 1.59
1 /* $NetBSD: if_wpi.c,v 1.59 2014/06/16 22:38:27 jakllsch 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 1.59 2014/06/16 22:38:27 jakllsch Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 28 #include <sys/param.h> 29 #include <sys/sockio.h> 30 #include <sys/sysctl.h> 31 #include <sys/mbuf.h> 32 #include <sys/kernel.h> 33 #include <sys/socket.h> 34 #include <sys/systm.h> 35 #include <sys/malloc.h> 36 #include <sys/mutex.h> 37 #include <sys/once.h> 38 #include <sys/conf.h> 39 #include <sys/kauth.h> 40 #include <sys/callout.h> 41 #include <sys/proc.h> 42 43 #include <sys/bus.h> 44 #include <machine/endian.h> 45 #include <sys/intr.h> 46 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/pcidevs.h> 50 51 #include <net/bpf.h> 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 68 #include <dev/firmload.h> 69 70 #include <dev/pci/if_wpireg.h> 71 #include <dev/pci/if_wpivar.h> 72 73 #ifdef WPI_DEBUG 74 #define DPRINTF(x) if (wpi_debug > 0) printf x 75 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 76 int wpi_debug = 1; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n, x) 80 #endif 81 82 static const char wpi_firmware_name[] = "iwlwifi-3945.ucode"; 83 static once_t wpi_firmware_init; 84 static kmutex_t wpi_firmware_mutex; 85 static size_t wpi_firmware_users; 86 static uint8_t *wpi_firmware_image; 87 static size_t wpi_firmware_size; 88 89 static int wpi_match(device_t, cfdata_t, void *); 90 static void wpi_attach(device_t, device_t, void *); 91 static int wpi_detach(device_t , int); 92 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 93 void **, bus_size_t, bus_size_t, int); 94 static void wpi_dma_contig_free(struct wpi_dma_info *); 95 static int wpi_alloc_shared(struct wpi_softc *); 96 static void wpi_free_shared(struct wpi_softc *); 97 static int wpi_alloc_fwmem(struct wpi_softc *); 98 static void wpi_free_fwmem(struct wpi_softc *); 99 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 100 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 101 static int wpi_alloc_rpool(struct wpi_softc *); 102 static void wpi_free_rpool(struct wpi_softc *); 103 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 104 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 105 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 106 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 107 int); 108 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 109 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 110 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 111 static void wpi_newassoc(struct ieee80211_node *, int); 112 static int wpi_media_change(struct ifnet *); 113 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 114 static void wpi_fix_channel(struct ieee80211com *, struct mbuf *); 115 static void wpi_mem_lock(struct wpi_softc *); 116 static void wpi_mem_unlock(struct wpi_softc *); 117 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 118 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 119 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 120 const uint32_t *, int); 121 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 122 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 123 static int wpi_cache_firmware(struct wpi_softc *); 124 static void wpi_release_firmware(void); 125 static int wpi_load_firmware(struct wpi_softc *); 126 static void wpi_calib_timeout(void *); 127 static void wpi_iter_func(void *, struct ieee80211_node *); 128 static void wpi_power_calibration(struct wpi_softc *, int); 129 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 130 struct wpi_rx_data *); 131 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 132 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 133 static void wpi_notif_intr(struct wpi_softc *); 134 static int wpi_intr(void *); 135 static void wpi_read_eeprom(struct wpi_softc *); 136 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 137 static void wpi_read_eeprom_group(struct wpi_softc *, int); 138 static uint8_t wpi_plcp_signal(int); 139 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 140 struct ieee80211_node *, int); 141 static void wpi_start(struct ifnet *); 142 static void wpi_watchdog(struct ifnet *); 143 static int wpi_ioctl(struct ifnet *, u_long, void *); 144 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 145 static int wpi_wme_update(struct ieee80211com *); 146 static int wpi_mrr_setup(struct wpi_softc *); 147 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 148 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 149 static int wpi_set_txpower(struct wpi_softc *, 150 struct ieee80211_channel *, int); 151 static int wpi_get_power_index(struct wpi_softc *, 152 struct wpi_power_group *, struct ieee80211_channel *, int); 153 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 154 static int wpi_auth(struct wpi_softc *); 155 static int wpi_scan(struct wpi_softc *, uint16_t); 156 static int wpi_config(struct wpi_softc *); 157 static void wpi_stop_master(struct wpi_softc *); 158 static int wpi_power_up(struct wpi_softc *); 159 static int wpi_reset(struct wpi_softc *); 160 static void wpi_hw_config(struct wpi_softc *); 161 static int wpi_init(struct ifnet *); 162 static void wpi_stop(struct ifnet *, int); 163 static bool wpi_resume(device_t, const pmf_qual_t *); 164 static int wpi_getrfkill(struct wpi_softc *); 165 static void wpi_sysctlattach(struct wpi_softc *); 166 167 CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 168 wpi_detach, NULL); 169 170 static int 171 wpi_match(device_t parent, cfdata_t match __unused, void *aux) 172 { 173 struct pci_attach_args *pa = aux; 174 175 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 176 return 0; 177 178 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 179 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 180 return 1; 181 182 return 0; 183 } 184 185 /* Base Address Register */ 186 #define WPI_PCI_BAR0 0x10 187 188 static int 189 wpi_attach_once(void) 190 { 191 192 mutex_init(&wpi_firmware_mutex, MUTEX_DEFAULT, IPL_NONE); 193 return 0; 194 } 195 196 static void 197 wpi_attach(device_t parent __unused, device_t self, void *aux) 198 { 199 struct wpi_softc *sc = device_private(self); 200 struct ieee80211com *ic = &sc->sc_ic; 201 struct ifnet *ifp = &sc->sc_ec.ec_if; 202 struct pci_attach_args *pa = aux; 203 const char *intrstr; 204 bus_space_tag_t memt; 205 bus_space_handle_t memh; 206 pci_intr_handle_t ih; 207 pcireg_t data; 208 int error, ac; 209 char intrbuf[PCI_INTRSTR_LEN]; 210 211 RUN_ONCE(&wpi_firmware_init, wpi_attach_once); 212 sc->fw_used = false; 213 214 sc->sc_dev = self; 215 sc->sc_pct = pa->pa_pc; 216 sc->sc_pcitag = pa->pa_tag; 217 218 callout_init(&sc->calib_to, 0); 219 callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); 220 221 pci_aprint_devinfo(pa, NULL); 222 223 /* enable bus-mastering */ 224 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 225 data |= PCI_COMMAND_MASTER_ENABLE; 226 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 227 228 /* map the register window */ 229 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 230 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 231 if (error != 0) { 232 aprint_error_dev(self, "could not map memory space\n"); 233 return; 234 } 235 236 sc->sc_st = memt; 237 sc->sc_sh = memh; 238 sc->sc_dmat = pa->pa_dmat; 239 240 if (pci_intr_map(pa, &ih) != 0) { 241 aprint_error_dev(self, "could not map interrupt\n"); 242 return; 243 } 244 245 intrstr = pci_intr_string(sc->sc_pct, ih, intrbuf, sizeof(intrbuf)); 246 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 247 if (sc->sc_ih == NULL) { 248 aprint_error_dev(self, "could not establish interrupt"); 249 if (intrstr != NULL) 250 aprint_error(" at %s", intrstr); 251 aprint_error("\n"); 252 return; 253 } 254 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 255 256 if (wpi_reset(sc) != 0) { 257 aprint_error_dev(self, "could not reset adapter\n"); 258 return; 259 } 260 261 /* 262 * Allocate DMA memory for firmware transfers. 263 */ 264 if ((error = wpi_alloc_fwmem(sc)) != 0) 265 return; 266 267 /* 268 * Allocate shared page and Tx/Rx rings. 269 */ 270 if ((error = wpi_alloc_shared(sc)) != 0) { 271 aprint_error_dev(self, "could not allocate shared area\n"); 272 goto fail1; 273 } 274 275 if ((error = wpi_alloc_rpool(sc)) != 0) { 276 aprint_error_dev(self, "could not allocate Rx buffers\n"); 277 goto fail2; 278 } 279 280 for (ac = 0; ac < 4; ac++) { 281 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 282 if (error != 0) { 283 aprint_error_dev(self, "could not allocate Tx ring %d\n", ac); 284 goto fail3; 285 } 286 } 287 288 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 289 if (error != 0) { 290 aprint_error_dev(self, "could not allocate command ring\n"); 291 goto fail3; 292 } 293 294 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 295 aprint_error_dev(self, "could not allocate Rx ring\n"); 296 goto fail4; 297 } 298 299 ic->ic_ifp = ifp; 300 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 301 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 302 ic->ic_state = IEEE80211_S_INIT; 303 304 /* set device capabilities */ 305 ic->ic_caps = 306 IEEE80211_C_WPA | /* 802.11i */ 307 IEEE80211_C_MONITOR | /* monitor mode supported */ 308 IEEE80211_C_TXPMGT | /* tx power management */ 309 IEEE80211_C_SHSLOT | /* short slot time supported */ 310 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 311 IEEE80211_C_WME; /* 802.11e */ 312 313 /* read supported channels and MAC address from EEPROM */ 314 wpi_read_eeprom(sc); 315 316 /* set supported .11a, .11b and .11g rates */ 317 ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_std_rateset_11a; 318 ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; 319 ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; 320 321 /* IBSS channel undefined for now */ 322 ic->ic_ibss_chan = &ic->ic_channels[0]; 323 324 ifp->if_softc = sc; 325 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 326 ifp->if_init = wpi_init; 327 ifp->if_stop = wpi_stop; 328 ifp->if_ioctl = wpi_ioctl; 329 ifp->if_start = wpi_start; 330 ifp->if_watchdog = wpi_watchdog; 331 IFQ_SET_READY(&ifp->if_snd); 332 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 333 334 if_attach(ifp); 335 ieee80211_ifattach(ic); 336 /* override default methods */ 337 ic->ic_node_alloc = wpi_node_alloc; 338 ic->ic_newassoc = wpi_newassoc; 339 ic->ic_wme.wme_update = wpi_wme_update; 340 341 /* override state transition machine */ 342 sc->sc_newstate = ic->ic_newstate; 343 ic->ic_newstate = wpi_newstate; 344 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 345 346 sc->amrr.amrr_min_success_threshold = 1; 347 sc->amrr.amrr_max_success_threshold = 15; 348 349 wpi_sysctlattach(sc); 350 351 if (pmf_device_register(self, NULL, wpi_resume)) 352 pmf_class_network_register(self, ifp); 353 else 354 aprint_error_dev(self, "couldn't establish power handler\n"); 355 356 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 357 sizeof(struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 358 &sc->sc_drvbpf); 359 360 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 361 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 362 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 363 364 sc->sc_txtap_len = sizeof sc->sc_txtapu; 365 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 366 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 367 368 ieee80211_announce(ic); 369 370 return; 371 372 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 373 fail3: while (--ac >= 0) 374 wpi_free_tx_ring(sc, &sc->txq[ac]); 375 wpi_free_rpool(sc); 376 fail2: wpi_free_shared(sc); 377 fail1: wpi_free_fwmem(sc); 378 } 379 380 static int 381 wpi_detach(device_t self, int flags __unused) 382 { 383 struct wpi_softc *sc = device_private(self); 384 struct ifnet *ifp = sc->sc_ic.ic_ifp; 385 int ac; 386 387 wpi_stop(ifp, 1); 388 389 if (ifp != NULL) 390 bpf_detach(ifp); 391 ieee80211_ifdetach(&sc->sc_ic); 392 if (ifp != NULL) 393 if_detach(ifp); 394 395 for (ac = 0; ac < 4; ac++) 396 wpi_free_tx_ring(sc, &sc->txq[ac]); 397 wpi_free_tx_ring(sc, &sc->cmdq); 398 wpi_free_rx_ring(sc, &sc->rxq); 399 wpi_free_rpool(sc); 400 wpi_free_shared(sc); 401 402 if (sc->sc_ih != NULL) { 403 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 404 sc->sc_ih = NULL; 405 } 406 407 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 408 409 if (sc->fw_used) { 410 sc->fw_used = false; 411 wpi_release_firmware(); 412 } 413 414 return 0; 415 } 416 417 static int 418 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 419 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 420 { 421 int nsegs, error; 422 423 dma->tag = tag; 424 dma->size = size; 425 426 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 427 if (error != 0) 428 goto fail; 429 430 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 431 flags); 432 if (error != 0) 433 goto fail; 434 435 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 436 if (error != 0) 437 goto fail; 438 439 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 440 if (error != 0) 441 goto fail; 442 443 memset(dma->vaddr, 0, size); 444 445 dma->paddr = dma->map->dm_segs[0].ds_addr; 446 if (kvap != NULL) 447 *kvap = dma->vaddr; 448 449 return 0; 450 451 fail: wpi_dma_contig_free(dma); 452 return error; 453 } 454 455 static void 456 wpi_dma_contig_free(struct wpi_dma_info *dma) 457 { 458 if (dma->map != NULL) { 459 if (dma->vaddr != NULL) { 460 bus_dmamap_unload(dma->tag, dma->map); 461 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 462 bus_dmamem_free(dma->tag, &dma->seg, 1); 463 dma->vaddr = NULL; 464 } 465 bus_dmamap_destroy(dma->tag, dma->map); 466 dma->map = NULL; 467 } 468 } 469 470 /* 471 * Allocate a shared page between host and NIC. 472 */ 473 static int 474 wpi_alloc_shared(struct wpi_softc *sc) 475 { 476 int error; 477 /* must be aligned on a 4K-page boundary */ 478 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 479 (void **)&sc->shared, sizeof (struct wpi_shared), 480 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 481 if (error != 0) 482 aprint_error_dev(sc->sc_dev, 483 "could not allocate shared area DMA memory\n"); 484 485 return error; 486 } 487 488 static void 489 wpi_free_shared(struct wpi_softc *sc) 490 { 491 wpi_dma_contig_free(&sc->shared_dma); 492 } 493 494 /* 495 * Allocate DMA-safe memory for firmware transfer. 496 */ 497 static int 498 wpi_alloc_fwmem(struct wpi_softc *sc) 499 { 500 int error; 501 /* allocate enough contiguous space to store text and data */ 502 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 503 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 504 BUS_DMA_NOWAIT); 505 506 if (error != 0) 507 aprint_error_dev(sc->sc_dev, 508 "could not allocate firmware transfer area" 509 "DMA memory\n"); 510 return error; 511 } 512 513 static void 514 wpi_free_fwmem(struct wpi_softc *sc) 515 { 516 wpi_dma_contig_free(&sc->fw_dma); 517 } 518 519 520 static struct wpi_rbuf * 521 wpi_alloc_rbuf(struct wpi_softc *sc) 522 { 523 struct wpi_rbuf *rbuf; 524 525 mutex_enter(&sc->rxq.freelist_mtx); 526 rbuf = SLIST_FIRST(&sc->rxq.freelist); 527 if (rbuf != NULL) { 528 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 529 sc->rxq.nb_free_entries --; 530 } 531 mutex_exit(&sc->rxq.freelist_mtx); 532 533 return rbuf; 534 } 535 536 /* 537 * This is called automatically by the network stack when the mbuf to which our 538 * Rx buffer is attached is freed. 539 */ 540 static void 541 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 542 { 543 struct wpi_rbuf *rbuf = arg; 544 struct wpi_softc *sc = rbuf->sc; 545 546 /* put the buffer back in the free list */ 547 548 mutex_enter(&sc->rxq.freelist_mtx); 549 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 550 mutex_exit(&sc->rxq.freelist_mtx); 551 /* No need to protect this with a mutex, see wpi_rx_intr */ 552 sc->rxq.nb_free_entries ++; 553 554 if (__predict_true(m != NULL)) 555 pool_cache_put(mb_cache, m); 556 } 557 558 static int 559 wpi_alloc_rpool(struct wpi_softc *sc) 560 { 561 struct wpi_rx_ring *ring = &sc->rxq; 562 struct wpi_rbuf *rbuf; 563 int i, error; 564 565 /* allocate a big chunk of DMA'able memory.. */ 566 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 567 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 568 if (error != 0) { 569 aprint_normal_dev(sc->sc_dev, "could not allocate Rx buffers DMA memory\n"); 570 return error; 571 } 572 573 /* ..and split it into 3KB chunks */ 574 mutex_init(&ring->freelist_mtx, MUTEX_DEFAULT, IPL_NET); 575 SLIST_INIT(&ring->freelist); 576 for (i = 0; i < WPI_RBUF_COUNT; i++) { 577 rbuf = &ring->rbuf[i]; 578 rbuf->sc = sc; /* backpointer for callbacks */ 579 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 580 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 581 582 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 583 } 584 585 ring->nb_free_entries = WPI_RBUF_COUNT; 586 return 0; 587 } 588 589 static void 590 wpi_free_rpool(struct wpi_softc *sc) 591 { 592 wpi_dma_contig_free(&sc->rxq.buf_dma); 593 } 594 595 static int 596 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 597 { 598 struct wpi_rx_data *data; 599 struct wpi_rbuf *rbuf; 600 int i, error; 601 602 ring->cur = 0; 603 604 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 605 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 606 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 607 if (error != 0) { 608 aprint_error_dev(sc->sc_dev, "could not allocate rx ring DMA memory\n"); 609 goto fail; 610 } 611 612 /* 613 * Setup Rx buffers. 614 */ 615 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 616 data = &ring->data[i]; 617 618 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 619 if (data->m == NULL) { 620 aprint_error_dev(sc->sc_dev, "could not allocate rx mbuf\n"); 621 error = ENOMEM; 622 goto fail; 623 } 624 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 625 m_freem(data->m); 626 data->m = NULL; 627 aprint_error_dev(sc->sc_dev, "could not allocate rx cluster\n"); 628 error = ENOMEM; 629 goto fail; 630 } 631 /* attach Rx buffer to mbuf */ 632 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 633 rbuf); 634 data->m->m_flags |= M_EXT_RW; 635 636 ring->desc[i] = htole32(rbuf->paddr); 637 } 638 639 return 0; 640 641 fail: wpi_free_rx_ring(sc, ring); 642 return error; 643 } 644 645 static void 646 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 647 { 648 int ntries; 649 650 wpi_mem_lock(sc); 651 652 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 653 for (ntries = 0; ntries < 100; ntries++) { 654 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 655 break; 656 DELAY(10); 657 } 658 #ifdef WPI_DEBUG 659 if (ntries == 100 && wpi_debug > 0) 660 aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n"); 661 #endif 662 wpi_mem_unlock(sc); 663 664 ring->cur = 0; 665 } 666 667 static void 668 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 669 { 670 int i; 671 672 wpi_dma_contig_free(&ring->desc_dma); 673 674 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 675 if (ring->data[i].m != NULL) 676 m_freem(ring->data[i].m); 677 } 678 } 679 680 static int 681 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 682 int qid) 683 { 684 struct wpi_tx_data *data; 685 int i, error; 686 687 ring->qid = qid; 688 ring->count = count; 689 ring->queued = 0; 690 ring->cur = 0; 691 692 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 693 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 694 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 695 if (error != 0) { 696 aprint_error_dev(sc->sc_dev, "could not allocate tx ring DMA memory\n"); 697 goto fail; 698 } 699 700 /* update shared page with ring's base address */ 701 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 702 703 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 704 (void **)&ring->cmd, 705 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 706 if (error != 0) { 707 aprint_error_dev(sc->sc_dev, "could not allocate tx cmd DMA memory\n"); 708 goto fail; 709 } 710 711 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 712 M_NOWAIT); 713 if (ring->data == NULL) { 714 aprint_error_dev(sc->sc_dev, "could not allocate tx data slots\n"); 715 goto fail; 716 } 717 718 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 719 720 for (i = 0; i < count; i++) { 721 data = &ring->data[i]; 722 723 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 724 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 725 &data->map); 726 if (error != 0) { 727 aprint_error_dev(sc->sc_dev, "could not create tx buf DMA map\n"); 728 goto fail; 729 } 730 } 731 732 return 0; 733 734 fail: wpi_free_tx_ring(sc, ring); 735 return error; 736 } 737 738 static void 739 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 740 { 741 struct wpi_tx_data *data; 742 int i, ntries; 743 744 wpi_mem_lock(sc); 745 746 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 747 for (ntries = 0; ntries < 100; ntries++) { 748 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 749 break; 750 DELAY(10); 751 } 752 #ifdef WPI_DEBUG 753 if (ntries == 100 && wpi_debug > 0) { 754 aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n", 755 ring->qid); 756 } 757 #endif 758 wpi_mem_unlock(sc); 759 760 for (i = 0; i < ring->count; i++) { 761 data = &ring->data[i]; 762 763 if (data->m != NULL) { 764 bus_dmamap_unload(sc->sc_dmat, data->map); 765 m_freem(data->m); 766 data->m = NULL; 767 } 768 } 769 770 ring->queued = 0; 771 ring->cur = 0; 772 } 773 774 static void 775 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 776 { 777 struct wpi_tx_data *data; 778 int i; 779 780 wpi_dma_contig_free(&ring->desc_dma); 781 wpi_dma_contig_free(&ring->cmd_dma); 782 783 if (ring->data != NULL) { 784 for (i = 0; i < ring->count; i++) { 785 data = &ring->data[i]; 786 787 if (data->m != NULL) { 788 bus_dmamap_unload(sc->sc_dmat, data->map); 789 m_freem(data->m); 790 } 791 } 792 free(ring->data, M_DEVBUF); 793 } 794 } 795 796 /*ARGUSED*/ 797 static struct ieee80211_node * 798 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 799 { 800 struct wpi_node *wn; 801 802 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 803 804 return (struct ieee80211_node *)wn; 805 } 806 807 static void 808 wpi_newassoc(struct ieee80211_node *ni, int isnew) 809 { 810 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 811 int i; 812 813 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 814 815 /* set rate to some reasonable initial value */ 816 for (i = ni->ni_rates.rs_nrates - 1; 817 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 818 i--); 819 ni->ni_txrate = i; 820 } 821 822 static int 823 wpi_media_change(struct ifnet *ifp) 824 { 825 int error; 826 827 error = ieee80211_media_change(ifp); 828 if (error != ENETRESET) 829 return error; 830 831 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 832 wpi_init(ifp); 833 834 return 0; 835 } 836 837 static int 838 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 839 { 840 struct ifnet *ifp = ic->ic_ifp; 841 struct wpi_softc *sc = ifp->if_softc; 842 struct ieee80211_node *ni; 843 int error; 844 845 callout_stop(&sc->calib_to); 846 847 switch (nstate) { 848 case IEEE80211_S_SCAN: 849 850 if (sc->is_scanning) 851 break; 852 853 sc->is_scanning = true; 854 ieee80211_node_table_reset(&ic->ic_scan); 855 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 856 857 /* make the link LED blink while we're scanning */ 858 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 859 860 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 861 aprint_error_dev(sc->sc_dev, "could not initiate scan\n"); 862 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 863 return error; 864 } 865 866 ic->ic_state = nstate; 867 return 0; 868 869 case IEEE80211_S_ASSOC: 870 if (ic->ic_state != IEEE80211_S_RUN) 871 break; 872 /* FALLTHROUGH */ 873 case IEEE80211_S_AUTH: 874 sc->config.associd = 0; 875 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 876 if ((error = wpi_auth(sc)) != 0) { 877 aprint_error_dev(sc->sc_dev, 878 "could not send authentication request\n"); 879 return error; 880 } 881 break; 882 883 case IEEE80211_S_RUN: 884 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 885 /* link LED blinks while monitoring */ 886 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 887 break; 888 } 889 890 ni = ic->ic_bss; 891 892 if (ic->ic_opmode != IEEE80211_M_STA) { 893 (void) wpi_auth(sc); /* XXX */ 894 wpi_setup_beacon(sc, ni); 895 } 896 897 wpi_enable_tsf(sc, ni); 898 899 /* update adapter's configuration */ 900 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 901 /* short preamble/slot time are negotiated when associating */ 902 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 903 WPI_CONFIG_SHSLOT); 904 if (ic->ic_flags & IEEE80211_F_SHSLOT) 905 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 906 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 907 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 908 sc->config.filter |= htole32(WPI_FILTER_BSS); 909 if (ic->ic_opmode != IEEE80211_M_STA) 910 sc->config.filter |= htole32(WPI_FILTER_BEACON); 911 912 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 913 914 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 915 sc->config.flags)); 916 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 917 sizeof (struct wpi_config), 1); 918 if (error != 0) { 919 aprint_error_dev(sc->sc_dev, "could not update configuration\n"); 920 return error; 921 } 922 923 /* configuration has changed, set Tx power accordingly */ 924 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 925 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 926 return error; 927 } 928 929 if (ic->ic_opmode == IEEE80211_M_STA) { 930 /* fake a join to init the tx rate */ 931 wpi_newassoc(ni, 1); 932 } 933 934 /* start periodic calibration timer */ 935 sc->calib_cnt = 0; 936 callout_schedule(&sc->calib_to, hz/2); 937 938 /* link LED always on while associated */ 939 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 940 break; 941 942 case IEEE80211_S_INIT: 943 sc->is_scanning = false; 944 break; 945 } 946 947 return sc->sc_newstate(ic, nstate, arg); 948 } 949 950 /* 951 * XXX: Hack to set the current channel to the value advertised in beacons or 952 * probe responses. Only used during AP detection. 953 * XXX: Duplicated from if_iwi.c 954 */ 955 static void 956 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 957 { 958 struct ieee80211_frame *wh; 959 uint8_t subtype; 960 uint8_t *frm, *efrm; 961 962 wh = mtod(m, struct ieee80211_frame *); 963 964 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 965 return; 966 967 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 968 969 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 970 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 971 return; 972 973 frm = (uint8_t *)(wh + 1); 974 efrm = mtod(m, uint8_t *) + m->m_len; 975 976 frm += 12; /* skip tstamp, bintval and capinfo fields */ 977 while (frm < efrm) { 978 if (*frm == IEEE80211_ELEMID_DSPARMS) 979 #if IEEE80211_CHAN_MAX < 255 980 if (frm[2] <= IEEE80211_CHAN_MAX) 981 #endif 982 ic->ic_curchan = &ic->ic_channels[frm[2]]; 983 984 frm += frm[1] + 2; 985 } 986 } 987 988 /* 989 * Grab exclusive access to NIC memory. 990 */ 991 static void 992 wpi_mem_lock(struct wpi_softc *sc) 993 { 994 uint32_t tmp; 995 int ntries; 996 997 tmp = WPI_READ(sc, WPI_GPIO_CTL); 998 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 999 1000 /* spin until we actually get the lock */ 1001 for (ntries = 0; ntries < 1000; ntries++) { 1002 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1003 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1004 break; 1005 DELAY(10); 1006 } 1007 if (ntries == 1000) 1008 aprint_error_dev(sc->sc_dev, "could not lock memory\n"); 1009 } 1010 1011 /* 1012 * Release lock on NIC memory. 1013 */ 1014 static void 1015 wpi_mem_unlock(struct wpi_softc *sc) 1016 { 1017 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1018 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1019 } 1020 1021 static uint32_t 1022 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1023 { 1024 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1025 return WPI_READ(sc, WPI_READ_MEM_DATA); 1026 } 1027 1028 static void 1029 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1030 { 1031 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1032 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1033 } 1034 1035 static void 1036 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1037 const uint32_t *data, int wlen) 1038 { 1039 for (; wlen > 0; wlen--, data++, addr += 4) 1040 wpi_mem_write(sc, addr, *data); 1041 } 1042 1043 1044 /* 1045 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1046 * instead of using the traditional bit-bang method. 1047 */ 1048 static int 1049 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1050 { 1051 uint8_t *out = data; 1052 uint32_t val; 1053 int ntries; 1054 1055 wpi_mem_lock(sc); 1056 for (; len > 0; len -= 2, addr++) { 1057 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1058 1059 for (ntries = 0; ntries < 10; ntries++) { 1060 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1061 WPI_EEPROM_READY) 1062 break; 1063 DELAY(5); 1064 } 1065 if (ntries == 10) { 1066 aprint_error_dev(sc->sc_dev, "could not read EEPROM\n"); 1067 return ETIMEDOUT; 1068 } 1069 *out++ = val >> 16; 1070 if (len > 1) 1071 *out++ = val >> 24; 1072 } 1073 wpi_mem_unlock(sc); 1074 1075 return 0; 1076 } 1077 1078 /* 1079 * The firmware boot code is small and is intended to be copied directly into 1080 * the NIC internal memory. 1081 */ 1082 int 1083 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1084 { 1085 int ntries; 1086 1087 size /= sizeof (uint32_t); 1088 1089 wpi_mem_lock(sc); 1090 1091 /* copy microcode image into NIC memory */ 1092 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1093 (const uint32_t *)ucode, size); 1094 1095 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1096 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1097 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1098 1099 /* run microcode */ 1100 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1101 1102 /* wait for transfer to complete */ 1103 for (ntries = 0; ntries < 1000; ntries++) { 1104 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1105 break; 1106 DELAY(10); 1107 } 1108 if (ntries == 1000) { 1109 wpi_mem_unlock(sc); 1110 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1111 return ETIMEDOUT; 1112 } 1113 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1114 1115 wpi_mem_unlock(sc); 1116 1117 return 0; 1118 } 1119 1120 static int 1121 wpi_cache_firmware(struct wpi_softc *sc) 1122 { 1123 const char *const fwname = wpi_firmware_name; 1124 firmware_handle_t fw; 1125 int error; 1126 1127 /* sc is used here only to report error messages. */ 1128 1129 mutex_enter(&wpi_firmware_mutex); 1130 1131 if (wpi_firmware_users == SIZE_MAX) { 1132 mutex_exit(&wpi_firmware_mutex); 1133 return ENFILE; /* Too many of something in the system... */ 1134 } 1135 if (wpi_firmware_users++) { 1136 KASSERT(wpi_firmware_image != NULL); 1137 KASSERT(wpi_firmware_size > 0); 1138 mutex_exit(&wpi_firmware_mutex); 1139 return 0; /* Already good to go. */ 1140 } 1141 1142 KASSERT(wpi_firmware_image == NULL); 1143 KASSERT(wpi_firmware_size == 0); 1144 1145 /* load firmware image from disk */ 1146 if ((error = firmware_open("if_wpi", fwname, &fw)) != 0) { 1147 aprint_error_dev(sc->sc_dev, 1148 "could not open firmware file %s: %d\n", fwname, error); 1149 goto fail0; 1150 } 1151 1152 wpi_firmware_size = firmware_get_size(fw); 1153 1154 if (wpi_firmware_size > sizeof (struct wpi_firmware_hdr) + 1155 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ + 1156 WPI_FW_INIT_TEXT_MAXSZ + WPI_FW_INIT_DATA_MAXSZ + 1157 WPI_FW_BOOT_TEXT_MAXSZ) { 1158 aprint_error_dev(sc->sc_dev, 1159 "firmware file %s too large: %zu bytes\n", 1160 fwname, wpi_firmware_size); 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 "firmware file %s too small: %zu bytes\n", 1168 fwname, wpi_firmware_size); 1169 error = EINVAL; 1170 goto fail1; 1171 } 1172 1173 wpi_firmware_image = firmware_malloc(wpi_firmware_size); 1174 if (wpi_firmware_image == NULL) { 1175 aprint_error_dev(sc->sc_dev, 1176 "not enough memory for firmware file %s\n", fwname); 1177 error = ENOMEM; 1178 goto fail1; 1179 } 1180 1181 error = firmware_read(fw, 0, wpi_firmware_image, wpi_firmware_size); 1182 if (error != 0) { 1183 aprint_error_dev(sc->sc_dev, 1184 "error reading firmware file %s: %d\n", fwname, error); 1185 goto fail2; 1186 } 1187 1188 /* Success! */ 1189 firmware_close(fw); 1190 mutex_exit(&wpi_firmware_mutex); 1191 return 0; 1192 1193 fail2: 1194 firmware_free(wpi_firmware_image, wpi_firmware_size); 1195 wpi_firmware_image = NULL; 1196 fail1: 1197 wpi_firmware_size = 0; 1198 firmware_close(fw); 1199 fail0: 1200 KASSERT(wpi_firmware_users == 1); 1201 wpi_firmware_users = 0; 1202 KASSERT(wpi_firmware_image == NULL); 1203 KASSERT(wpi_firmware_size == 0); 1204 1205 mutex_exit(&wpi_firmware_mutex); 1206 return error; 1207 } 1208 1209 static void 1210 wpi_release_firmware(void) 1211 { 1212 1213 mutex_enter(&wpi_firmware_mutex); 1214 1215 KASSERT(wpi_firmware_users > 0); 1216 KASSERT(wpi_firmware_image != NULL); 1217 KASSERT(wpi_firmware_size != 0); 1218 1219 if (--wpi_firmware_users == 0) { 1220 firmware_free(wpi_firmware_image, wpi_firmware_size); 1221 wpi_firmware_image = NULL; 1222 wpi_firmware_size = 0; 1223 } 1224 1225 mutex_exit(&wpi_firmware_mutex); 1226 } 1227 1228 static int 1229 wpi_load_firmware(struct wpi_softc *sc) 1230 { 1231 struct wpi_dma_info *dma = &sc->fw_dma; 1232 struct wpi_firmware_hdr hdr; 1233 const uint8_t *init_text, *init_data, *main_text, *main_data; 1234 const uint8_t *boot_text; 1235 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1236 uint32_t boot_textsz; 1237 size_t size; 1238 int error; 1239 1240 if (!sc->fw_used) { 1241 if ((error = wpi_cache_firmware(sc)) != 0) 1242 return error; 1243 sc->fw_used = true; 1244 } 1245 1246 KASSERT(sc->fw_used); 1247 KASSERT(wpi_firmware_image != NULL); 1248 KASSERT(wpi_firmware_size > sizeof(hdr)); 1249 1250 memcpy(&hdr, wpi_firmware_image, sizeof(hdr)); 1251 1252 main_textsz = le32toh(hdr.main_textsz); 1253 main_datasz = le32toh(hdr.main_datasz); 1254 init_textsz = le32toh(hdr.init_textsz); 1255 init_datasz = le32toh(hdr.init_datasz); 1256 boot_textsz = le32toh(hdr.boot_textsz); 1257 1258 /* sanity-check firmware segments sizes */ 1259 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1260 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1261 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1262 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1263 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1264 (boot_textsz & 3) != 0) { 1265 aprint_error_dev(sc->sc_dev, "invalid firmware header\n"); 1266 error = EINVAL; 1267 goto free_firmware; 1268 } 1269 1270 /* check that all firmware segments are present */ 1271 size = sizeof (struct wpi_firmware_hdr) + main_textsz + 1272 main_datasz + init_textsz + init_datasz + boot_textsz; 1273 if (wpi_firmware_size < size) { 1274 aprint_error_dev(sc->sc_dev, 1275 "firmware file truncated: %zu bytes, expected %zu bytes\n", 1276 wpi_firmware_size, size); 1277 error = EINVAL; 1278 goto free_firmware; 1279 } 1280 1281 /* get pointers to firmware segments */ 1282 main_text = wpi_firmware_image + sizeof (struct wpi_firmware_hdr); 1283 main_data = main_text + main_textsz; 1284 init_text = main_data + main_datasz; 1285 init_data = init_text + init_textsz; 1286 boot_text = init_data + init_datasz; 1287 1288 /* copy initialization images into pre-allocated DMA-safe memory */ 1289 memcpy(dma->vaddr, init_data, init_datasz); 1290 memcpy((char *)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, 1291 init_textsz); 1292 1293 /* tell adapter where to find initialization images */ 1294 wpi_mem_lock(sc); 1295 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1296 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1297 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1298 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1299 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1300 wpi_mem_unlock(sc); 1301 1302 /* load firmware boot code */ 1303 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1304 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1305 return error; 1306 } 1307 1308 /* now press "execute" ;-) */ 1309 WPI_WRITE(sc, WPI_RESET, 0); 1310 1311 /* wait at most one second for first alive notification */ 1312 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1313 /* this isn't what was supposed to happen.. */ 1314 aprint_error_dev(sc->sc_dev, 1315 "timeout waiting for adapter to initialize\n"); 1316 } 1317 1318 /* copy runtime images into pre-allocated DMA-safe memory */ 1319 memcpy(dma->vaddr, main_data, main_datasz); 1320 memcpy((char *)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, 1321 main_textsz); 1322 1323 /* tell adapter where to find runtime images */ 1324 wpi_mem_lock(sc); 1325 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1326 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1327 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1328 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1329 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1330 wpi_mem_unlock(sc); 1331 1332 /* wait at most one second for second alive notification */ 1333 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1334 /* this isn't what was supposed to happen.. */ 1335 aprint_error_dev(sc->sc_dev, 1336 "timeout waiting for adapter to initialize\n"); 1337 } 1338 1339 return error; 1340 1341 free_firmware: 1342 sc->fw_used = false; 1343 wpi_release_firmware(); 1344 return error; 1345 } 1346 1347 static void 1348 wpi_calib_timeout(void *arg) 1349 { 1350 struct wpi_softc *sc = arg; 1351 struct ieee80211com *ic = &sc->sc_ic; 1352 int temp, s; 1353 1354 /* automatic rate control triggered every 500ms */ 1355 if (ic->ic_fixed_rate == -1) { 1356 s = splnet(); 1357 if (ic->ic_opmode == IEEE80211_M_STA) 1358 wpi_iter_func(sc, ic->ic_bss); 1359 else 1360 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1361 splx(s); 1362 } 1363 1364 /* update sensor data */ 1365 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1366 1367 /* automatic power calibration every 60s */ 1368 if (++sc->calib_cnt >= 120) { 1369 wpi_power_calibration(sc, temp); 1370 sc->calib_cnt = 0; 1371 } 1372 1373 callout_schedule(&sc->calib_to, hz/2); 1374 } 1375 1376 static void 1377 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1378 { 1379 struct wpi_softc *sc = arg; 1380 struct wpi_node *wn = (struct wpi_node *)ni; 1381 1382 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1383 } 1384 1385 /* 1386 * This function is called periodically (every 60 seconds) to adjust output 1387 * power to temperature changes. 1388 */ 1389 void 1390 wpi_power_calibration(struct wpi_softc *sc, int temp) 1391 { 1392 /* sanity-check read value */ 1393 if (temp < -260 || temp > 25) { 1394 /* this can't be correct, ignore */ 1395 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1396 return; 1397 } 1398 1399 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1400 1401 /* adjust Tx power if need be */ 1402 if (abs(temp - sc->temp) <= 6) 1403 return; 1404 1405 sc->temp = temp; 1406 1407 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1408 /* just warn, too bad for the automatic calibration... */ 1409 aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n"); 1410 } 1411 } 1412 1413 static void 1414 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1415 struct wpi_rx_data *data) 1416 { 1417 struct ieee80211com *ic = &sc->sc_ic; 1418 struct ifnet *ifp = ic->ic_ifp; 1419 struct wpi_rx_ring *ring = &sc->rxq; 1420 struct wpi_rx_stat *stat; 1421 struct wpi_rx_head *head; 1422 struct wpi_rx_tail *tail; 1423 struct wpi_rbuf *rbuf; 1424 struct ieee80211_frame *wh; 1425 struct ieee80211_node *ni; 1426 struct mbuf *m, *mnew; 1427 int data_off ; 1428 1429 stat = (struct wpi_rx_stat *)(desc + 1); 1430 1431 if (stat->len > WPI_STAT_MAXLEN) { 1432 aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n"); 1433 ifp->if_ierrors++; 1434 return; 1435 } 1436 1437 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1438 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1439 1440 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1441 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1442 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1443 le64toh(tail->tstamp))); 1444 1445 /* 1446 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1447 * to radiotap in monitor mode). 1448 */ 1449 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1450 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1451 ifp->if_ierrors++; 1452 return; 1453 } 1454 1455 /* Compute where are the useful datas */ 1456 data_off = (char*)(head + 1) - mtod(data->m, char*); 1457 1458 /* 1459 * If the number of free entry is too low 1460 * just dup the data->m socket and reuse the same rbuf entry 1461 * Note that thi test is not protected by a mutex because the 1462 * only path that causes nb_free_entries to decrease is through 1463 * this interrupt routine, which is not re-entrent. 1464 * What may not be obvious is that the safe path is if that test 1465 * evaluates as true, so nb_free_entries can grow any time. 1466 */ 1467 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1468 1469 /* Prepare the mbuf for the m_dup */ 1470 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1471 data->m->m_data = (char*) data->m->m_data + data_off; 1472 1473 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1474 1475 /* Restore the m_data pointer for future use */ 1476 data->m->m_data = (char*) data->m->m_data - data_off; 1477 1478 if (m == NULL) { 1479 ifp->if_ierrors++; 1480 return; 1481 } 1482 } else { 1483 1484 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1485 if (mnew == NULL) { 1486 ifp->if_ierrors++; 1487 return; 1488 } 1489 1490 rbuf = wpi_alloc_rbuf(sc); 1491 KASSERT(rbuf != NULL); 1492 1493 /* attach Rx buffer to mbuf */ 1494 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1495 rbuf); 1496 mnew->m_flags |= M_EXT_RW; 1497 1498 m = data->m; 1499 data->m = mnew; 1500 1501 /* update Rx descriptor */ 1502 ring->desc[ring->cur] = htole32(rbuf->paddr); 1503 1504 m->m_data = (char*)m->m_data + data_off; 1505 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1506 } 1507 1508 /* finalize mbuf */ 1509 m->m_pkthdr.rcvif = ifp; 1510 1511 if (ic->ic_state == IEEE80211_S_SCAN) 1512 wpi_fix_channel(ic, m); 1513 1514 if (sc->sc_drvbpf != NULL) { 1515 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1516 1517 tap->wr_flags = 0; 1518 tap->wr_chan_freq = 1519 htole16(ic->ic_channels[head->chan].ic_freq); 1520 tap->wr_chan_flags = 1521 htole16(ic->ic_channels[head->chan].ic_flags); 1522 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1523 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1524 tap->wr_tsft = tail->tstamp; 1525 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1526 switch (head->rate) { 1527 /* CCK rates */ 1528 case 10: tap->wr_rate = 2; break; 1529 case 20: tap->wr_rate = 4; break; 1530 case 55: tap->wr_rate = 11; break; 1531 case 110: tap->wr_rate = 22; break; 1532 /* OFDM rates */ 1533 case 0xd: tap->wr_rate = 12; break; 1534 case 0xf: tap->wr_rate = 18; break; 1535 case 0x5: tap->wr_rate = 24; break; 1536 case 0x7: tap->wr_rate = 36; break; 1537 case 0x9: tap->wr_rate = 48; break; 1538 case 0xb: tap->wr_rate = 72; break; 1539 case 0x1: tap->wr_rate = 96; break; 1540 case 0x3: tap->wr_rate = 108; break; 1541 /* unknown rate: should not happen */ 1542 default: tap->wr_rate = 0; 1543 } 1544 if (le16toh(head->flags) & 0x4) 1545 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1546 1547 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1548 } 1549 1550 /* grab a reference to the source node */ 1551 wh = mtod(m, struct ieee80211_frame *); 1552 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1553 1554 /* send the frame to the 802.11 layer */ 1555 ieee80211_input(ic, m, ni, stat->rssi, 0); 1556 1557 /* release node reference */ 1558 ieee80211_free_node(ni); 1559 } 1560 1561 static void 1562 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1563 { 1564 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1565 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1566 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1567 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1568 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1569 1570 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1571 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1572 stat->nkill, stat->rate, le32toh(stat->duration), 1573 le32toh(stat->status))); 1574 1575 /* 1576 * Update rate control statistics for the node. 1577 * XXX we should not count mgmt frames since they're always sent at 1578 * the lowest available bit-rate. 1579 */ 1580 wn->amn.amn_txcnt++; 1581 if (stat->ntries > 0) { 1582 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1583 wn->amn.amn_retrycnt++; 1584 } 1585 1586 if ((le32toh(stat->status) & 0xff) != 1) 1587 ifp->if_oerrors++; 1588 else 1589 ifp->if_opackets++; 1590 1591 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1592 m_freem(txdata->m); 1593 txdata->m = NULL; 1594 ieee80211_free_node(txdata->ni); 1595 txdata->ni = NULL; 1596 1597 ring->queued--; 1598 1599 sc->sc_tx_timer = 0; 1600 ifp->if_flags &= ~IFF_OACTIVE; 1601 wpi_start(ifp); 1602 } 1603 1604 static void 1605 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1606 { 1607 struct wpi_tx_ring *ring = &sc->cmdq; 1608 struct wpi_tx_data *data; 1609 1610 if ((desc->qid & 7) != 4) 1611 return; /* not a command ack */ 1612 1613 data = &ring->data[desc->idx]; 1614 1615 /* if the command was mapped in a mbuf, free it */ 1616 if (data->m != NULL) { 1617 bus_dmamap_unload(sc->sc_dmat, data->map); 1618 m_freem(data->m); 1619 data->m = NULL; 1620 } 1621 1622 wakeup(&ring->cmd[desc->idx]); 1623 } 1624 1625 static void 1626 wpi_notif_intr(struct wpi_softc *sc) 1627 { 1628 struct ieee80211com *ic = &sc->sc_ic; 1629 struct ifnet *ifp = ic->ic_ifp; 1630 struct wpi_rx_desc *desc; 1631 struct wpi_rx_data *data; 1632 uint32_t hw; 1633 1634 hw = le32toh(sc->shared->next); 1635 while (sc->rxq.cur != hw) { 1636 data = &sc->rxq.data[sc->rxq.cur]; 1637 1638 desc = mtod(data->m, struct wpi_rx_desc *); 1639 1640 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1641 "len=%d\n", desc->qid, desc->idx, desc->flags, 1642 desc->type, le32toh(desc->len))); 1643 1644 if (!(desc->qid & 0x80)) /* reply to a command */ 1645 wpi_cmd_intr(sc, desc); 1646 1647 switch (desc->type) { 1648 case WPI_RX_DONE: 1649 /* a 802.11 frame was received */ 1650 wpi_rx_intr(sc, desc, data); 1651 break; 1652 1653 case WPI_TX_DONE: 1654 /* a 802.11 frame has been transmitted */ 1655 wpi_tx_intr(sc, desc); 1656 break; 1657 1658 case WPI_UC_READY: 1659 { 1660 struct wpi_ucode_info *uc = 1661 (struct wpi_ucode_info *)(desc + 1); 1662 1663 /* the microcontroller is ready */ 1664 DPRINTF(("microcode alive notification version %x " 1665 "alive %x\n", le32toh(uc->version), 1666 le32toh(uc->valid))); 1667 1668 if (le32toh(uc->valid) != 1) { 1669 aprint_error_dev(sc->sc_dev, 1670 "microcontroller initialization failed\n"); 1671 } 1672 break; 1673 } 1674 case WPI_STATE_CHANGED: 1675 { 1676 uint32_t *status = (uint32_t *)(desc + 1); 1677 1678 /* enabled/disabled notification */ 1679 DPRINTF(("state changed to %x\n", le32toh(*status))); 1680 1681 if (le32toh(*status) & 1) { 1682 /* the radio button has to be pushed */ 1683 aprint_error_dev(sc->sc_dev, "Radio transmitter is off\n"); 1684 /* turn the interface down */ 1685 ifp->if_flags &= ~IFF_UP; 1686 wpi_stop(ifp, 1); 1687 return; /* no further processing */ 1688 } 1689 break; 1690 } 1691 case WPI_START_SCAN: 1692 { 1693 struct wpi_start_scan *scan = 1694 (struct wpi_start_scan *)(desc + 1); 1695 1696 DPRINTFN(2, ("scanning channel %d status %x\n", 1697 scan->chan, le32toh(scan->status))); 1698 1699 /* fix current channel */ 1700 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1701 break; 1702 } 1703 case WPI_STOP_SCAN: 1704 { 1705 struct wpi_stop_scan *scan = 1706 (struct wpi_stop_scan *)(desc + 1); 1707 1708 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1709 scan->nchan, scan->status, scan->chan)); 1710 1711 if (scan->status == 1 && scan->chan <= 14) { 1712 /* 1713 * We just finished scanning 802.11g channels, 1714 * start scanning 802.11a ones. 1715 */ 1716 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1717 break; 1718 } 1719 sc->is_scanning = false; 1720 ieee80211_end_scan(ic); 1721 break; 1722 } 1723 } 1724 1725 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1726 } 1727 1728 /* tell the firmware what we have processed */ 1729 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1730 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1731 } 1732 1733 static int 1734 wpi_intr(void *arg) 1735 { 1736 struct wpi_softc *sc = arg; 1737 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1738 uint32_t r; 1739 1740 r = WPI_READ(sc, WPI_INTR); 1741 if (r == 0 || r == 0xffffffff) 1742 return 0; /* not for us */ 1743 1744 DPRINTFN(5, ("interrupt reg %x\n", r)); 1745 1746 /* disable interrupts */ 1747 WPI_WRITE(sc, WPI_MASK, 0); 1748 /* ack interrupts */ 1749 WPI_WRITE(sc, WPI_INTR, r); 1750 1751 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1752 aprint_error_dev(sc->sc_dev, "fatal firmware error\n"); 1753 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1754 wpi_stop(sc->sc_ic.ic_ifp, 1); 1755 return 1; 1756 } 1757 1758 if (r & WPI_RX_INTR) 1759 wpi_notif_intr(sc); 1760 1761 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1762 wakeup(sc); 1763 1764 /* re-enable interrupts */ 1765 if (ifp->if_flags & IFF_UP) 1766 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1767 1768 return 1; 1769 } 1770 1771 static uint8_t 1772 wpi_plcp_signal(int rate) 1773 { 1774 switch (rate) { 1775 /* CCK rates (returned values are device-dependent) */ 1776 case 2: return 10; 1777 case 4: return 20; 1778 case 11: return 55; 1779 case 22: return 110; 1780 1781 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1782 /* R1-R4, (u)ral is R4-R1 */ 1783 case 12: return 0xd; 1784 case 18: return 0xf; 1785 case 24: return 0x5; 1786 case 36: return 0x7; 1787 case 48: return 0x9; 1788 case 72: return 0xb; 1789 case 96: return 0x1; 1790 case 108: return 0x3; 1791 1792 /* unsupported rates (should not get there) */ 1793 default: return 0; 1794 } 1795 } 1796 1797 /* quickly determine if a given rate is CCK or OFDM */ 1798 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1799 1800 static int 1801 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1802 int ac) 1803 { 1804 struct ieee80211com *ic = &sc->sc_ic; 1805 struct wpi_tx_ring *ring = &sc->txq[ac]; 1806 struct wpi_tx_desc *desc; 1807 struct wpi_tx_data *data; 1808 struct wpi_tx_cmd *cmd; 1809 struct wpi_cmd_data *tx; 1810 struct ieee80211_frame *wh; 1811 struct ieee80211_key *k; 1812 const struct chanAccParams *cap; 1813 struct mbuf *mnew; 1814 int i, error, rate, hdrlen, noack = 0; 1815 1816 desc = &ring->desc[ring->cur]; 1817 data = &ring->data[ring->cur]; 1818 1819 wh = mtod(m0, struct ieee80211_frame *); 1820 1821 if (ieee80211_has_qos(wh)) { 1822 cap = &ic->ic_wme.wme_chanParams; 1823 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1824 } 1825 1826 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1827 k = ieee80211_crypto_encap(ic, ni, m0); 1828 if (k == NULL) { 1829 m_freem(m0); 1830 return ENOBUFS; 1831 } 1832 1833 /* packet header may have moved, reset our local pointer */ 1834 wh = mtod(m0, struct ieee80211_frame *); 1835 } 1836 1837 hdrlen = ieee80211_anyhdrsize(wh); 1838 1839 /* pickup a rate */ 1840 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1841 IEEE80211_FC0_TYPE_MGT) { 1842 /* mgmt frames are sent at the lowest available bit-rate */ 1843 rate = ni->ni_rates.rs_rates[0]; 1844 } else { 1845 if (ic->ic_fixed_rate != -1) { 1846 rate = ic->ic_sup_rates[ic->ic_curmode]. 1847 rs_rates[ic->ic_fixed_rate]; 1848 } else 1849 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1850 } 1851 rate &= IEEE80211_RATE_VAL; 1852 1853 1854 if (sc->sc_drvbpf != NULL) { 1855 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1856 1857 tap->wt_flags = 0; 1858 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1859 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1860 tap->wt_rate = rate; 1861 tap->wt_hwqueue = ac; 1862 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1863 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1864 1865 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1866 } 1867 1868 cmd = &ring->cmd[ring->cur]; 1869 cmd->code = WPI_CMD_TX_DATA; 1870 cmd->flags = 0; 1871 cmd->qid = ring->qid; 1872 cmd->idx = ring->cur; 1873 1874 tx = (struct wpi_cmd_data *)cmd->data; 1875 tx->flags = 0; 1876 1877 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1878 tx->flags |= htole32(WPI_TX_NEED_ACK); 1879 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1880 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1881 1882 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1883 1884 /* retrieve destination node's id */ 1885 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1886 WPI_ID_BSS; 1887 1888 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1889 IEEE80211_FC0_TYPE_MGT) { 1890 /* tell h/w to set timestamp in probe responses */ 1891 if ((wh->i_fc[0] & 1892 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1893 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1894 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1895 1896 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1897 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1898 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1899 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1900 tx->timeout = htole16(3); 1901 else 1902 tx->timeout = htole16(2); 1903 } else 1904 tx->timeout = htole16(0); 1905 1906 tx->rate = wpi_plcp_signal(rate); 1907 1908 /* be very persistant at sending frames out */ 1909 tx->rts_ntries = 7; 1910 tx->data_ntries = 15; 1911 1912 tx->ofdm_mask = 0xff; 1913 tx->cck_mask = 0xf; 1914 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1915 1916 tx->len = htole16(m0->m_pkthdr.len); 1917 1918 /* save and trim IEEE802.11 header */ 1919 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 1920 m_adj(m0, hdrlen); 1921 1922 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1923 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1924 if (error != 0 && error != EFBIG) { 1925 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", error); 1926 m_freem(m0); 1927 return error; 1928 } 1929 if (error != 0) { 1930 /* too many fragments, linearize */ 1931 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1932 if (mnew == NULL) { 1933 m_freem(m0); 1934 return ENOMEM; 1935 } 1936 1937 M_COPY_PKTHDR(mnew, m0); 1938 if (m0->m_pkthdr.len > MHLEN) { 1939 MCLGET(mnew, M_DONTWAIT); 1940 if (!(mnew->m_flags & M_EXT)) { 1941 m_freem(m0); 1942 m_freem(mnew); 1943 return ENOMEM; 1944 } 1945 } 1946 1947 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1948 m_freem(m0); 1949 mnew->m_len = mnew->m_pkthdr.len; 1950 m0 = mnew; 1951 1952 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1953 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1954 if (error != 0) { 1955 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 1956 error); 1957 m_freem(m0); 1958 return error; 1959 } 1960 } 1961 1962 data->m = m0; 1963 data->ni = ni; 1964 1965 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1966 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1967 1968 /* first scatter/gather segment is used by the tx data command */ 1969 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1970 (1 + data->map->dm_nsegs) << 24); 1971 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1972 ring->cur * sizeof (struct wpi_tx_cmd)); 1973 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 1974 ((hdrlen + 3) & ~3)); 1975 1976 for (i = 1; i <= data->map->dm_nsegs; i++) { 1977 desc->segs[i].addr = 1978 htole32(data->map->dm_segs[i - 1].ds_addr); 1979 desc->segs[i].len = 1980 htole32(data->map->dm_segs[i - 1].ds_len); 1981 } 1982 1983 ring->queued++; 1984 1985 /* kick ring */ 1986 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1987 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1988 1989 return 0; 1990 } 1991 1992 static void 1993 wpi_start(struct ifnet *ifp) 1994 { 1995 struct wpi_softc *sc = ifp->if_softc; 1996 struct ieee80211com *ic = &sc->sc_ic; 1997 struct ieee80211_node *ni; 1998 struct ether_header *eh; 1999 struct mbuf *m0; 2000 int ac; 2001 2002 /* 2003 * net80211 may still try to send management frames even if the 2004 * IFF_RUNNING flag is not set... 2005 */ 2006 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2007 return; 2008 2009 for (;;) { 2010 IF_DEQUEUE(&ic->ic_mgtq, m0); 2011 if (m0 != NULL) { 2012 2013 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 2014 m0->m_pkthdr.rcvif = NULL; 2015 2016 /* management frames go into ring 0 */ 2017 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2018 ifp->if_oerrors++; 2019 continue; 2020 } 2021 bpf_mtap3(ic->ic_rawbpf, m0); 2022 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 2023 ifp->if_oerrors++; 2024 break; 2025 } 2026 } else { 2027 if (ic->ic_state != IEEE80211_S_RUN) 2028 break; 2029 IFQ_POLL(&ifp->if_snd, m0); 2030 if (m0 == NULL) 2031 break; 2032 2033 if (m0->m_len < sizeof (*eh) && 2034 (m0 = m_pullup(m0, sizeof (*eh))) == NULL) { 2035 ifp->if_oerrors++; 2036 continue; 2037 } 2038 eh = mtod(m0, struct ether_header *); 2039 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2040 if (ni == NULL) { 2041 m_freem(m0); 2042 ifp->if_oerrors++; 2043 continue; 2044 } 2045 2046 /* classify mbuf so we can find which tx ring to use */ 2047 if (ieee80211_classify(ic, m0, ni) != 0) { 2048 m_freem(m0); 2049 ieee80211_free_node(ni); 2050 ifp->if_oerrors++; 2051 continue; 2052 } 2053 2054 /* no QoS encapsulation for EAPOL frames */ 2055 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2056 M_WME_GETAC(m0) : WME_AC_BE; 2057 2058 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2059 /* there is no place left in this ring */ 2060 ifp->if_flags |= IFF_OACTIVE; 2061 break; 2062 } 2063 IFQ_DEQUEUE(&ifp->if_snd, m0); 2064 bpf_mtap(ifp, m0); 2065 m0 = ieee80211_encap(ic, m0, ni); 2066 if (m0 == NULL) { 2067 ieee80211_free_node(ni); 2068 ifp->if_oerrors++; 2069 continue; 2070 } 2071 bpf_mtap3(ic->ic_rawbpf, m0); 2072 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2073 ieee80211_free_node(ni); 2074 ifp->if_oerrors++; 2075 break; 2076 } 2077 } 2078 2079 sc->sc_tx_timer = 5; 2080 ifp->if_timer = 1; 2081 } 2082 } 2083 2084 static void 2085 wpi_watchdog(struct ifnet *ifp) 2086 { 2087 struct wpi_softc *sc = ifp->if_softc; 2088 2089 ifp->if_timer = 0; 2090 2091 if (sc->sc_tx_timer > 0) { 2092 if (--sc->sc_tx_timer == 0) { 2093 aprint_error_dev(sc->sc_dev, "device timeout\n"); 2094 ifp->if_oerrors++; 2095 ifp->if_flags &= ~IFF_UP; 2096 wpi_stop(ifp, 1); 2097 return; 2098 } 2099 ifp->if_timer = 1; 2100 } 2101 2102 ieee80211_watchdog(&sc->sc_ic); 2103 } 2104 2105 static int 2106 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2107 { 2108 #define IS_RUNNING(ifp) \ 2109 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2110 2111 struct wpi_softc *sc = ifp->if_softc; 2112 struct ieee80211com *ic = &sc->sc_ic; 2113 int s, error = 0; 2114 2115 s = splnet(); 2116 2117 switch (cmd) { 2118 case SIOCSIFFLAGS: 2119 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 2120 break; 2121 if (ifp->if_flags & IFF_UP) { 2122 if (!(ifp->if_flags & IFF_RUNNING)) 2123 wpi_init(ifp); 2124 } else { 2125 if (ifp->if_flags & IFF_RUNNING) 2126 wpi_stop(ifp, 1); 2127 } 2128 break; 2129 2130 case SIOCADDMULTI: 2131 case SIOCDELMULTI: 2132 /* XXX no h/w multicast filter? --dyoung */ 2133 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2134 /* setup multicast filter, etc */ 2135 error = 0; 2136 } 2137 break; 2138 2139 default: 2140 error = ieee80211_ioctl(ic, cmd, data); 2141 } 2142 2143 if (error == ENETRESET) { 2144 if (IS_RUNNING(ifp) && 2145 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2146 wpi_init(ifp); 2147 error = 0; 2148 } 2149 2150 splx(s); 2151 return error; 2152 2153 #undef IS_RUNNING 2154 } 2155 2156 /* 2157 * Extract various information from EEPROM. 2158 */ 2159 static void 2160 wpi_read_eeprom(struct wpi_softc *sc) 2161 { 2162 struct ieee80211com *ic = &sc->sc_ic; 2163 char domain[4]; 2164 int i; 2165 2166 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2167 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2168 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2169 2170 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2171 sc->type)); 2172 2173 /* read and print regulatory domain */ 2174 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2175 aprint_normal_dev(sc->sc_dev, "%.4s", domain); 2176 2177 /* read and print MAC address */ 2178 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2179 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2180 2181 /* read the list of authorized channels */ 2182 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2183 wpi_read_eeprom_channels(sc, i); 2184 2185 /* read the list of power groups */ 2186 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2187 wpi_read_eeprom_group(sc, i); 2188 } 2189 2190 static void 2191 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2192 { 2193 struct ieee80211com *ic = &sc->sc_ic; 2194 const struct wpi_chan_band *band = &wpi_bands[n]; 2195 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2196 int chan, i; 2197 2198 wpi_read_prom_data(sc, band->addr, channels, 2199 band->nchan * sizeof (struct wpi_eeprom_chan)); 2200 2201 for (i = 0; i < band->nchan; i++) { 2202 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2203 continue; 2204 2205 chan = band->chan[i]; 2206 2207 if (n == 0) { /* 2GHz band */ 2208 ic->ic_channels[chan].ic_freq = 2209 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2210 ic->ic_channels[chan].ic_flags = 2211 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2212 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2213 2214 } else { /* 5GHz band */ 2215 /* 2216 * Some 3945abg adapters support channels 7, 8, 11 2217 * and 12 in the 2GHz *and* 5GHz bands. 2218 * Because of limitations in our net80211(9) stack, 2219 * we can't support these channels in 5GHz band. 2220 */ 2221 if (chan <= 14) 2222 continue; 2223 2224 ic->ic_channels[chan].ic_freq = 2225 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2226 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2227 } 2228 2229 /* is active scan allowed on this channel? */ 2230 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2231 ic->ic_channels[chan].ic_flags |= 2232 IEEE80211_CHAN_PASSIVE; 2233 } 2234 2235 /* save maximum allowed power for this channel */ 2236 sc->maxpwr[chan] = channels[i].maxpwr; 2237 2238 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2239 chan, channels[i].flags, sc->maxpwr[chan])); 2240 } 2241 } 2242 2243 static void 2244 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2245 { 2246 struct wpi_power_group *group = &sc->groups[n]; 2247 struct wpi_eeprom_group rgroup; 2248 int i; 2249 2250 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2251 sizeof rgroup); 2252 2253 /* save power group information */ 2254 group->chan = rgroup.chan; 2255 group->maxpwr = rgroup.maxpwr; 2256 /* temperature at which the samples were taken */ 2257 group->temp = (int16_t)le16toh(rgroup.temp); 2258 2259 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2260 group->chan, group->maxpwr, group->temp)); 2261 2262 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2263 group->samples[i].index = rgroup.samples[i].index; 2264 group->samples[i].power = rgroup.samples[i].power; 2265 2266 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2267 group->samples[i].index, group->samples[i].power)); 2268 } 2269 } 2270 2271 /* 2272 * Send a command to the firmware. 2273 */ 2274 static int 2275 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2276 { 2277 struct wpi_tx_ring *ring = &sc->cmdq; 2278 struct wpi_tx_desc *desc; 2279 struct wpi_tx_cmd *cmd; 2280 2281 KASSERT(size <= sizeof cmd->data); 2282 2283 desc = &ring->desc[ring->cur]; 2284 cmd = &ring->cmd[ring->cur]; 2285 2286 cmd->code = code; 2287 cmd->flags = 0; 2288 cmd->qid = ring->qid; 2289 cmd->idx = ring->cur; 2290 memcpy(cmd->data, buf, size); 2291 2292 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2293 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2294 ring->cur * sizeof (struct wpi_tx_cmd)); 2295 desc->segs[0].len = htole32(4 + size); 2296 2297 /* kick cmd ring */ 2298 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2299 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2300 2301 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2302 } 2303 2304 static int 2305 wpi_wme_update(struct ieee80211com *ic) 2306 { 2307 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2308 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2309 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2310 const struct wmeParams *wmep; 2311 struct wpi_wme_setup wme; 2312 int ac; 2313 2314 /* don't override default WME values if WME is not actually enabled */ 2315 if (!(ic->ic_flags & IEEE80211_F_WME)) 2316 return 0; 2317 2318 wme.flags = 0; 2319 for (ac = 0; ac < WME_NUM_AC; ac++) { 2320 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2321 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2322 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2323 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2324 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2325 2326 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2327 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2328 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2329 } 2330 2331 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2332 #undef WPI_USEC 2333 #undef WPI_EXP2 2334 } 2335 2336 /* 2337 * Configure h/w multi-rate retries. 2338 */ 2339 static int 2340 wpi_mrr_setup(struct wpi_softc *sc) 2341 { 2342 struct ieee80211com *ic = &sc->sc_ic; 2343 struct wpi_mrr_setup mrr; 2344 int i, error; 2345 2346 /* CCK rates (not used with 802.11a) */ 2347 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2348 mrr.rates[i].flags = 0; 2349 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2350 /* fallback to the immediate lower CCK rate (if any) */ 2351 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2352 /* try one time at this rate before falling back to "next" */ 2353 mrr.rates[i].ntries = 1; 2354 } 2355 2356 /* OFDM rates (not used with 802.11b) */ 2357 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2358 mrr.rates[i].flags = 0; 2359 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2360 /* fallback to the immediate lower rate (if any) */ 2361 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2362 mrr.rates[i].next = (i == WPI_OFDM6) ? 2363 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2364 WPI_OFDM6 : WPI_CCK2) : 2365 i - 1; 2366 /* try one time at this rate before falling back to "next" */ 2367 mrr.rates[i].ntries = 1; 2368 } 2369 2370 /* setup MRR for control frames */ 2371 mrr.which = htole32(WPI_MRR_CTL); 2372 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2373 if (error != 0) { 2374 aprint_error_dev(sc->sc_dev, "could not setup MRR for control frames\n"); 2375 return error; 2376 } 2377 2378 /* setup MRR for data frames */ 2379 mrr.which = htole32(WPI_MRR_DATA); 2380 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2381 if (error != 0) { 2382 aprint_error_dev(sc->sc_dev, "could not setup MRR for data frames\n"); 2383 return error; 2384 } 2385 2386 return 0; 2387 } 2388 2389 static void 2390 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2391 { 2392 struct wpi_cmd_led led; 2393 2394 led.which = which; 2395 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2396 led.off = off; 2397 led.on = on; 2398 2399 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2400 } 2401 2402 static void 2403 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2404 { 2405 struct wpi_cmd_tsf tsf; 2406 uint64_t val, mod; 2407 2408 memset(&tsf, 0, sizeof tsf); 2409 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2410 tsf.bintval = htole16(ni->ni_intval); 2411 tsf.lintval = htole16(10); 2412 2413 /* compute remaining time until next beacon */ 2414 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2415 mod = le64toh(tsf.tstamp) % val; 2416 tsf.binitval = htole32((uint32_t)(val - mod)); 2417 2418 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2419 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2420 2421 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2422 aprint_error_dev(sc->sc_dev, "could not enable TSF\n"); 2423 } 2424 2425 /* 2426 * Update Tx power to match what is defined for channel `c'. 2427 */ 2428 static int 2429 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2430 { 2431 struct ieee80211com *ic = &sc->sc_ic; 2432 struct wpi_power_group *group; 2433 struct wpi_cmd_txpower txpower; 2434 u_int chan; 2435 int i; 2436 2437 /* get channel number */ 2438 chan = ieee80211_chan2ieee(ic, c); 2439 2440 /* find the power group to which this channel belongs */ 2441 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2442 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2443 if (chan <= group->chan) 2444 break; 2445 } else 2446 group = &sc->groups[0]; 2447 2448 memset(&txpower, 0, sizeof txpower); 2449 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2450 txpower.chan = htole16(chan); 2451 2452 /* set Tx power for all OFDM and CCK rates */ 2453 for (i = 0; i <= 11 ; i++) { 2454 /* retrieve Tx power for this channel/rate combination */ 2455 int idx = wpi_get_power_index(sc, group, c, 2456 wpi_ridx_to_rate[i]); 2457 2458 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2459 2460 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2461 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2462 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2463 } else { 2464 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2465 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2466 } 2467 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2468 wpi_ridx_to_rate[i], idx)); 2469 } 2470 2471 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2472 } 2473 2474 /* 2475 * Determine Tx power index for a given channel/rate combination. 2476 * This takes into account the regulatory information from EEPROM and the 2477 * current temperature. 2478 */ 2479 static int 2480 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2481 struct ieee80211_channel *c, int rate) 2482 { 2483 /* fixed-point arithmetic division using a n-bit fractional part */ 2484 #define fdivround(a, b, n) \ 2485 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2486 2487 /* linear interpolation */ 2488 #define interpolate(x, x1, y1, x2, y2, n) \ 2489 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2490 2491 struct ieee80211com *ic = &sc->sc_ic; 2492 struct wpi_power_sample *sample; 2493 int pwr, idx; 2494 u_int chan; 2495 2496 /* get channel number */ 2497 chan = ieee80211_chan2ieee(ic, c); 2498 2499 /* default power is group's maximum power - 3dB */ 2500 pwr = group->maxpwr / 2; 2501 2502 /* decrease power for highest OFDM rates to reduce distortion */ 2503 switch (rate) { 2504 case 72: /* 36Mb/s */ 2505 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2506 break; 2507 case 96: /* 48Mb/s */ 2508 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2509 break; 2510 case 108: /* 54Mb/s */ 2511 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2512 break; 2513 } 2514 2515 /* never exceed channel's maximum allowed Tx power */ 2516 pwr = min(pwr, sc->maxpwr[chan]); 2517 2518 /* retrieve power index into gain tables from samples */ 2519 for (sample = group->samples; sample < &group->samples[3]; sample++) 2520 if (pwr > sample[1].power) 2521 break; 2522 /* fixed-point linear interpolation using a 19-bit fractional part */ 2523 idx = interpolate(pwr, sample[0].power, sample[0].index, 2524 sample[1].power, sample[1].index, 19); 2525 2526 /* 2527 * Adjust power index based on current temperature: 2528 * - if cooler than factory-calibrated: decrease output power 2529 * - if warmer than factory-calibrated: increase output power 2530 */ 2531 idx -= (sc->temp - group->temp) * 11 / 100; 2532 2533 /* decrease power for CCK rates (-5dB) */ 2534 if (!WPI_RATE_IS_OFDM(rate)) 2535 idx += 10; 2536 2537 /* keep power index in a valid range */ 2538 if (idx < 0) 2539 return 0; 2540 if (idx > WPI_MAX_PWR_INDEX) 2541 return WPI_MAX_PWR_INDEX; 2542 return idx; 2543 2544 #undef interpolate 2545 #undef fdivround 2546 } 2547 2548 /* 2549 * Build a beacon frame that the firmware will broadcast periodically in 2550 * IBSS or HostAP modes. 2551 */ 2552 static int 2553 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2554 { 2555 struct ieee80211com *ic = &sc->sc_ic; 2556 struct wpi_tx_ring *ring = &sc->cmdq; 2557 struct wpi_tx_desc *desc; 2558 struct wpi_tx_data *data; 2559 struct wpi_tx_cmd *cmd; 2560 struct wpi_cmd_beacon *bcn; 2561 struct ieee80211_beacon_offsets bo; 2562 struct mbuf *m0; 2563 int error; 2564 2565 desc = &ring->desc[ring->cur]; 2566 data = &ring->data[ring->cur]; 2567 2568 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2569 if (m0 == NULL) { 2570 aprint_error_dev(sc->sc_dev, "could not allocate beacon frame\n"); 2571 return ENOMEM; 2572 } 2573 2574 cmd = &ring->cmd[ring->cur]; 2575 cmd->code = WPI_CMD_SET_BEACON; 2576 cmd->flags = 0; 2577 cmd->qid = ring->qid; 2578 cmd->idx = ring->cur; 2579 2580 bcn = (struct wpi_cmd_beacon *)cmd->data; 2581 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2582 bcn->id = WPI_ID_BROADCAST; 2583 bcn->ofdm_mask = 0xff; 2584 bcn->cck_mask = 0x0f; 2585 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2586 bcn->len = htole16(m0->m_pkthdr.len); 2587 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2588 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2589 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2590 2591 /* save and trim IEEE802.11 header */ 2592 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2593 m_adj(m0, sizeof (struct ieee80211_frame)); 2594 2595 /* assume beacon frame is contiguous */ 2596 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2597 BUS_DMA_READ | BUS_DMA_NOWAIT); 2598 if (error) { 2599 aprint_error_dev(sc->sc_dev, "could not map beacon\n"); 2600 m_freem(m0); 2601 return error; 2602 } 2603 2604 data->m = m0; 2605 2606 /* first scatter/gather segment is used by the beacon command */ 2607 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2608 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2609 ring->cur * sizeof (struct wpi_tx_cmd)); 2610 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2611 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2612 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2613 2614 /* kick cmd ring */ 2615 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2616 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2617 2618 return 0; 2619 } 2620 2621 static int 2622 wpi_auth(struct wpi_softc *sc) 2623 { 2624 struct ieee80211com *ic = &sc->sc_ic; 2625 struct ieee80211_node *ni = ic->ic_bss; 2626 struct wpi_node_info node; 2627 int error; 2628 2629 /* update adapter's configuration */ 2630 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2631 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2632 sc->config.flags = htole32(WPI_CONFIG_TSF); 2633 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2634 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2635 WPI_CONFIG_24GHZ); 2636 } 2637 switch (ic->ic_curmode) { 2638 case IEEE80211_MODE_11A: 2639 sc->config.cck_mask = 0; 2640 sc->config.ofdm_mask = 0x15; 2641 break; 2642 case IEEE80211_MODE_11B: 2643 sc->config.cck_mask = 0x03; 2644 sc->config.ofdm_mask = 0; 2645 break; 2646 default: /* assume 802.11b/g */ 2647 sc->config.cck_mask = 0x0f; 2648 sc->config.ofdm_mask = 0x15; 2649 } 2650 2651 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2652 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2653 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2654 sizeof (struct wpi_config), 1); 2655 if (error != 0) { 2656 aprint_error_dev(sc->sc_dev, "could not configure\n"); 2657 return error; 2658 } 2659 2660 /* configuration has changed, set Tx power accordingly */ 2661 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2662 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2663 return error; 2664 } 2665 2666 /* add default node */ 2667 memset(&node, 0, sizeof node); 2668 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2669 node.id = WPI_ID_BSS; 2670 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2671 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2672 node.action = htole32(WPI_ACTION_SET_RATE); 2673 node.antenna = WPI_ANTENNA_BOTH; 2674 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2675 if (error != 0) { 2676 aprint_error_dev(sc->sc_dev, "could not add BSS node\n"); 2677 return error; 2678 } 2679 2680 return 0; 2681 } 2682 2683 /* 2684 * Send a scan request to the firmware. Since this command is huge, we map it 2685 * into a mbuf instead of using the pre-allocated set of commands. 2686 */ 2687 static int 2688 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2689 { 2690 struct ieee80211com *ic = &sc->sc_ic; 2691 struct wpi_tx_ring *ring = &sc->cmdq; 2692 struct wpi_tx_desc *desc; 2693 struct wpi_tx_data *data; 2694 struct wpi_tx_cmd *cmd; 2695 struct wpi_scan_hdr *hdr; 2696 struct wpi_scan_chan *chan; 2697 struct ieee80211_frame *wh; 2698 struct ieee80211_rateset *rs; 2699 struct ieee80211_channel *c; 2700 enum ieee80211_phymode mode; 2701 uint8_t *frm; 2702 int nrates, pktlen, error; 2703 2704 desc = &ring->desc[ring->cur]; 2705 data = &ring->data[ring->cur]; 2706 2707 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2708 if (data->m == NULL) { 2709 aprint_error_dev(sc->sc_dev, 2710 "could not allocate mbuf for scan command\n"); 2711 return ENOMEM; 2712 } 2713 2714 MCLGET(data->m, M_DONTWAIT); 2715 if (!(data->m->m_flags & M_EXT)) { 2716 m_freem(data->m); 2717 data->m = NULL; 2718 aprint_error_dev(sc->sc_dev, 2719 "could not allocate mbuf for scan command\n"); 2720 return ENOMEM; 2721 } 2722 2723 cmd = mtod(data->m, struct wpi_tx_cmd *); 2724 cmd->code = WPI_CMD_SCAN; 2725 cmd->flags = 0; 2726 cmd->qid = ring->qid; 2727 cmd->idx = ring->cur; 2728 2729 hdr = (struct wpi_scan_hdr *)cmd->data; 2730 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2731 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2732 hdr->id = WPI_ID_BROADCAST; 2733 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2734 2735 /* 2736 * Move to the next channel if no packets are received within 5 msecs 2737 * after sending the probe request (this helps to reduce the duration 2738 * of active scans). 2739 */ 2740 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2741 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2742 2743 if (flags & IEEE80211_CHAN_A) { 2744 hdr->crc_threshold = htole16(1); 2745 /* send probe requests at 6Mbps */ 2746 hdr->rate = wpi_plcp_signal(12); 2747 } else { 2748 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2749 /* send probe requests at 1Mbps */ 2750 hdr->rate = wpi_plcp_signal(2); 2751 } 2752 2753 /* for directed scans, firmware inserts the essid IE itself */ 2754 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2755 hdr->essid[0].len = ic->ic_des_esslen; 2756 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2757 2758 /* 2759 * Build a probe request frame. Most of the following code is a 2760 * copy & paste of what is done in net80211. 2761 */ 2762 wh = (struct ieee80211_frame *)(hdr + 1); 2763 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2764 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2765 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2766 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2767 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2768 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2769 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2770 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2771 2772 frm = (uint8_t *)(wh + 1); 2773 2774 /* add empty essid IE (firmware generates it for directed scans) */ 2775 *frm++ = IEEE80211_ELEMID_SSID; 2776 *frm++ = 0; 2777 2778 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2779 rs = &ic->ic_sup_rates[mode]; 2780 2781 /* add supported rates IE */ 2782 *frm++ = IEEE80211_ELEMID_RATES; 2783 nrates = rs->rs_nrates; 2784 if (nrates > IEEE80211_RATE_SIZE) 2785 nrates = IEEE80211_RATE_SIZE; 2786 *frm++ = nrates; 2787 memcpy(frm, rs->rs_rates, nrates); 2788 frm += nrates; 2789 2790 /* add supported xrates IE */ 2791 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2792 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2793 *frm++ = IEEE80211_ELEMID_XRATES; 2794 *frm++ = nrates; 2795 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2796 frm += nrates; 2797 } 2798 2799 /* setup length of probe request */ 2800 hdr->paylen = htole16(frm - (uint8_t *)wh); 2801 2802 chan = (struct wpi_scan_chan *)frm; 2803 for (c = &ic->ic_channels[1]; 2804 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2805 if ((c->ic_flags & flags) != flags) 2806 continue; 2807 2808 chan->chan = ieee80211_chan2ieee(ic, c); 2809 chan->flags = 0; 2810 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2811 chan->flags |= WPI_CHAN_ACTIVE; 2812 if (ic->ic_des_esslen != 0) 2813 chan->flags |= WPI_CHAN_DIRECT; 2814 } 2815 chan->dsp_gain = 0x6e; 2816 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2817 chan->rf_gain = 0x3b; 2818 chan->active = htole16(10); 2819 chan->passive = htole16(110); 2820 } else { 2821 chan->rf_gain = 0x28; 2822 chan->active = htole16(20); 2823 chan->passive = htole16(120); 2824 } 2825 hdr->nchan++; 2826 chan++; 2827 2828 frm += sizeof (struct wpi_scan_chan); 2829 } 2830 hdr->len = htole16(frm - (uint8_t *)hdr); 2831 pktlen = frm - (uint8_t *)cmd; 2832 2833 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2834 NULL, BUS_DMA_NOWAIT); 2835 if (error) { 2836 aprint_error_dev(sc->sc_dev, "could not map scan command\n"); 2837 m_freem(data->m); 2838 data->m = NULL; 2839 return error; 2840 } 2841 2842 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2843 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2844 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2845 2846 /* kick cmd ring */ 2847 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2848 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2849 2850 return 0; /* will be notified async. of failure/success */ 2851 } 2852 2853 static int 2854 wpi_config(struct wpi_softc *sc) 2855 { 2856 struct ieee80211com *ic = &sc->sc_ic; 2857 struct ifnet *ifp = ic->ic_ifp; 2858 struct wpi_power power; 2859 struct wpi_bluetooth bluetooth; 2860 struct wpi_node_info node; 2861 int error; 2862 2863 memset(&power, 0, sizeof power); 2864 power.flags = htole32(WPI_POWER_CAM | 0x8); 2865 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2866 if (error != 0) { 2867 aprint_error_dev(sc->sc_dev, "could not set power mode\n"); 2868 return error; 2869 } 2870 2871 /* configure bluetooth coexistence */ 2872 memset(&bluetooth, 0, sizeof bluetooth); 2873 bluetooth.flags = 3; 2874 bluetooth.lead = 0xaa; 2875 bluetooth.kill = 1; 2876 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2877 0); 2878 if (error != 0) { 2879 aprint_error_dev(sc->sc_dev, 2880 "could not configure bluetooth coexistence\n"); 2881 return error; 2882 } 2883 2884 /* configure adapter */ 2885 memset(&sc->config, 0, sizeof (struct wpi_config)); 2886 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2887 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2888 /*set default channel*/ 2889 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2890 sc->config.flags = htole32(WPI_CONFIG_TSF); 2891 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2892 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2893 WPI_CONFIG_24GHZ); 2894 } 2895 sc->config.filter = 0; 2896 switch (ic->ic_opmode) { 2897 case IEEE80211_M_STA: 2898 sc->config.mode = WPI_MODE_STA; 2899 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2900 break; 2901 case IEEE80211_M_IBSS: 2902 case IEEE80211_M_AHDEMO: 2903 sc->config.mode = WPI_MODE_IBSS; 2904 break; 2905 case IEEE80211_M_HOSTAP: 2906 sc->config.mode = WPI_MODE_HOSTAP; 2907 break; 2908 case IEEE80211_M_MONITOR: 2909 sc->config.mode = WPI_MODE_MONITOR; 2910 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2911 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2912 break; 2913 } 2914 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2915 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2916 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2917 sizeof (struct wpi_config), 0); 2918 if (error != 0) { 2919 aprint_error_dev(sc->sc_dev, "configure command failed\n"); 2920 return error; 2921 } 2922 2923 /* configuration has changed, set Tx power accordingly */ 2924 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2925 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2926 return error; 2927 } 2928 2929 /* add broadcast node */ 2930 memset(&node, 0, sizeof node); 2931 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2932 node.id = WPI_ID_BROADCAST; 2933 node.rate = wpi_plcp_signal(2); 2934 node.action = htole32(WPI_ACTION_SET_RATE); 2935 node.antenna = WPI_ANTENNA_BOTH; 2936 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2937 if (error != 0) { 2938 aprint_error_dev(sc->sc_dev, "could not add broadcast node\n"); 2939 return error; 2940 } 2941 2942 if ((error = wpi_mrr_setup(sc)) != 0) { 2943 aprint_error_dev(sc->sc_dev, "could not setup MRR\n"); 2944 return error; 2945 } 2946 2947 return 0; 2948 } 2949 2950 static void 2951 wpi_stop_master(struct wpi_softc *sc) 2952 { 2953 uint32_t tmp; 2954 int ntries; 2955 2956 tmp = WPI_READ(sc, WPI_RESET); 2957 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2958 2959 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2960 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2961 return; /* already asleep */ 2962 2963 for (ntries = 0; ntries < 100; ntries++) { 2964 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2965 break; 2966 DELAY(10); 2967 } 2968 if (ntries == 100) { 2969 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 2970 } 2971 } 2972 2973 static int 2974 wpi_power_up(struct wpi_softc *sc) 2975 { 2976 uint32_t tmp; 2977 int ntries; 2978 2979 wpi_mem_lock(sc); 2980 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2981 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2982 wpi_mem_unlock(sc); 2983 2984 for (ntries = 0; ntries < 5000; ntries++) { 2985 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2986 break; 2987 DELAY(10); 2988 } 2989 if (ntries == 5000) { 2990 aprint_error_dev(sc->sc_dev, "timeout waiting for NIC to power up\n"); 2991 return ETIMEDOUT; 2992 } 2993 return 0; 2994 } 2995 2996 static int 2997 wpi_reset(struct wpi_softc *sc) 2998 { 2999 uint32_t tmp; 3000 int ntries; 3001 3002 /* clear any pending interrupts */ 3003 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3004 3005 tmp = WPI_READ(sc, WPI_PLL_CTL); 3006 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 3007 3008 tmp = WPI_READ(sc, WPI_CHICKEN); 3009 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 3010 3011 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3012 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 3013 3014 /* wait for clock stabilization */ 3015 for (ntries = 0; ntries < 1000; ntries++) { 3016 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 3017 break; 3018 DELAY(10); 3019 } 3020 if (ntries == 1000) { 3021 aprint_error_dev(sc->sc_dev, 3022 "timeout waiting for clock stabilization\n"); 3023 return ETIMEDOUT; 3024 } 3025 3026 /* initialize EEPROM */ 3027 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3028 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3029 aprint_error_dev(sc->sc_dev, "EEPROM not found\n"); 3030 return EIO; 3031 } 3032 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3033 3034 return 0; 3035 } 3036 3037 static void 3038 wpi_hw_config(struct wpi_softc *sc) 3039 { 3040 uint32_t rev, hw; 3041 3042 /* voodoo from the reference driver */ 3043 hw = WPI_READ(sc, WPI_HWCONFIG); 3044 3045 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3046 rev = PCI_REVISION(rev); 3047 if ((rev & 0xc0) == 0x40) 3048 hw |= WPI_HW_ALM_MB; 3049 else if (!(rev & 0x80)) 3050 hw |= WPI_HW_ALM_MM; 3051 3052 if (sc->cap == 0x80) 3053 hw |= WPI_HW_SKU_MRC; 3054 3055 hw &= ~WPI_HW_REV_D; 3056 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3057 hw |= WPI_HW_REV_D; 3058 3059 if (sc->type > 1) 3060 hw |= WPI_HW_TYPE_B; 3061 3062 DPRINTF(("setting h/w config %x\n", hw)); 3063 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3064 } 3065 3066 static int 3067 wpi_init(struct ifnet *ifp) 3068 { 3069 struct wpi_softc *sc = ifp->if_softc; 3070 struct ieee80211com *ic = &sc->sc_ic; 3071 uint32_t tmp; 3072 int qid, ntries, error; 3073 3074 wpi_stop(ifp,1); 3075 (void)wpi_reset(sc); 3076 3077 wpi_mem_lock(sc); 3078 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3079 DELAY(20); 3080 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3081 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3082 wpi_mem_unlock(sc); 3083 3084 (void)wpi_power_up(sc); 3085 wpi_hw_config(sc); 3086 3087 /* init Rx ring */ 3088 wpi_mem_lock(sc); 3089 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3090 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3091 offsetof(struct wpi_shared, next)); 3092 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3093 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3094 wpi_mem_unlock(sc); 3095 3096 /* init Tx rings */ 3097 wpi_mem_lock(sc); 3098 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3099 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3100 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3101 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3102 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3103 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3104 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3105 3106 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3107 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3108 3109 for (qid = 0; qid < 6; qid++) { 3110 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3111 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3112 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3113 } 3114 wpi_mem_unlock(sc); 3115 3116 /* clear "radio off" and "disable command" bits (reversed logic) */ 3117 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3118 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3119 3120 /* clear any pending interrupts */ 3121 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3122 /* enable interrupts */ 3123 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3124 3125 /* not sure why/if this is necessary... */ 3126 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3127 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3128 3129 if ((error = wpi_load_firmware(sc)) != 0) 3130 /* wpi_load_firmware prints error messages for us. */ 3131 goto fail1; 3132 3133 /* Check the status of the radio switch */ 3134 if (wpi_getrfkill(sc)) { 3135 aprint_error_dev(sc->sc_dev, 3136 "radio is disabled by hardware switch\n"); 3137 error = EBUSY; 3138 goto fail1; 3139 } 3140 3141 /* wait for thermal sensors to calibrate */ 3142 for (ntries = 0; ntries < 1000; ntries++) { 3143 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3144 break; 3145 DELAY(10); 3146 } 3147 if (ntries == 1000) { 3148 aprint_error_dev(sc->sc_dev, 3149 "timeout waiting for thermal sensors calibration\n"); 3150 error = ETIMEDOUT; 3151 goto fail1; 3152 } 3153 3154 DPRINTF(("temperature %d\n", sc->temp)); 3155 3156 if ((error = wpi_config(sc)) != 0) { 3157 aprint_error_dev(sc->sc_dev, "could not configure device\n"); 3158 goto fail1; 3159 } 3160 3161 ifp->if_flags &= ~IFF_OACTIVE; 3162 ifp->if_flags |= IFF_RUNNING; 3163 3164 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3165 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3166 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3167 } 3168 else 3169 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3170 3171 return 0; 3172 3173 fail1: wpi_stop(ifp, 1); 3174 return error; 3175 } 3176 3177 3178 static void 3179 wpi_stop(struct ifnet *ifp, int disable) 3180 { 3181 struct wpi_softc *sc = ifp->if_softc; 3182 struct ieee80211com *ic = &sc->sc_ic; 3183 uint32_t tmp; 3184 int ac; 3185 3186 ifp->if_timer = sc->sc_tx_timer = 0; 3187 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3188 3189 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3190 3191 /* disable interrupts */ 3192 WPI_WRITE(sc, WPI_MASK, 0); 3193 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3194 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3195 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3196 3197 wpi_mem_lock(sc); 3198 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3199 wpi_mem_unlock(sc); 3200 3201 /* reset all Tx rings */ 3202 for (ac = 0; ac < 4; ac++) 3203 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3204 wpi_reset_tx_ring(sc, &sc->cmdq); 3205 3206 /* reset Rx ring */ 3207 wpi_reset_rx_ring(sc, &sc->rxq); 3208 3209 wpi_mem_lock(sc); 3210 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3211 wpi_mem_unlock(sc); 3212 3213 DELAY(5); 3214 3215 wpi_stop_master(sc); 3216 3217 tmp = WPI_READ(sc, WPI_RESET); 3218 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3219 } 3220 3221 static bool 3222 wpi_resume(device_t dv, const pmf_qual_t *qual) 3223 { 3224 struct wpi_softc *sc = device_private(dv); 3225 3226 (void)wpi_reset(sc); 3227 3228 return true; 3229 } 3230 3231 /* 3232 * Return whether or not the radio is enabled in hardware 3233 * (i.e. the rfkill switch is "off"). 3234 */ 3235 static int 3236 wpi_getrfkill(struct wpi_softc *sc) 3237 { 3238 uint32_t tmp; 3239 3240 wpi_mem_lock(sc); 3241 tmp = wpi_mem_read(sc, WPI_MEM_RFKILL); 3242 wpi_mem_unlock(sc); 3243 3244 return !(tmp & 0x01); 3245 } 3246 3247 static int 3248 wpi_sysctl_radio(SYSCTLFN_ARGS) 3249 { 3250 struct sysctlnode node; 3251 struct wpi_softc *sc; 3252 int val, error; 3253 3254 node = *rnode; 3255 sc = (struct wpi_softc *)node.sysctl_data; 3256 3257 val = !wpi_getrfkill(sc); 3258 3259 node.sysctl_data = &val; 3260 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 3261 3262 if (error || newp == NULL) 3263 return error; 3264 3265 return 0; 3266 } 3267 3268 static void 3269 wpi_sysctlattach(struct wpi_softc *sc) 3270 { 3271 int rc; 3272 const struct sysctlnode *rnode; 3273 const struct sysctlnode *cnode; 3274 3275 struct sysctllog **clog = &sc->sc_sysctllog; 3276 3277 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 3278 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 3279 SYSCTL_DESCR("wpi controls and statistics"), 3280 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 3281 goto err; 3282 3283 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3284 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 3285 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 3286 wpi_sysctl_radio, 0, (void *)sc, 0, CTL_CREATE, CTL_EOL)) != 0) 3287 goto err; 3288 3289 #ifdef WPI_DEBUG 3290 /* control debugging printfs */ 3291 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3292 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 3293 "debug", SYSCTL_DESCR("Enable debugging output"), 3294 NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 3295 goto err; 3296 #endif 3297 3298 return; 3299 err: 3300 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 3301 } 3302
Indexes created Mon Sep 29 21:09:56 GMT 2025