if_wpi.c revision 1.28
1 /* $NetBSD: if_wpi.c,v 1.28 2007/11/16 00:13:32 degroote 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 1.28 2007/11/16 00:13:32 degroote Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 #include "bpfilter.h" 28 29 #include <sys/param.h> 30 #include <sys/sockio.h> 31 #include <sys/sysctl.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/conf.h> 38 #include <sys/kauth.h> 39 #include <sys/callout.h> 40 41 #include <sys/bus.h> 42 #include <machine/endian.h> 43 #include <sys/intr.h> 44 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcidevs.h> 48 49 #if NBPFILTER > 0 50 #include <net/bpf.h> 51 #endif 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 68 #include <dev/firmload.h> 69 70 #include <dev/pci/if_wpireg.h> 71 #include <dev/pci/if_wpivar.h> 72 73 #ifdef WPI_DEBUG 74 #define DPRINTF(x) if (wpi_debug > 0) printf x 75 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 76 int wpi_debug = 1; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n, x) 80 #endif 81 82 /* 83 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 84 */ 85 static const struct ieee80211_rateset wpi_rateset_11a = 86 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 87 88 static const struct ieee80211_rateset wpi_rateset_11b = 89 { 4, { 2, 4, 11, 22 } }; 90 91 static const struct ieee80211_rateset wpi_rateset_11g = 92 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 93 94 static int wpi_match(device_t, struct cfdata *, void *); 95 static void wpi_attach(device_t, device_t, void *); 96 static int wpi_detach(device_t , int); 97 static void wpi_power(int, void *); 98 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 99 void **, bus_size_t, bus_size_t, int); 100 static void wpi_dma_contig_free(struct wpi_dma_info *); 101 static int wpi_alloc_shared(struct wpi_softc *); 102 static void wpi_free_shared(struct wpi_softc *); 103 static int wpi_alloc_fwmem(struct wpi_softc *); 104 static void wpi_free_fwmem(struct wpi_softc *); 105 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 106 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 107 static int wpi_alloc_rpool(struct wpi_softc *); 108 static void wpi_free_rpool(struct wpi_softc *); 109 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 110 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 111 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 112 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 113 int); 114 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 115 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 116 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 117 static void wpi_newassoc(struct ieee80211_node *, int); 118 static int wpi_media_change(struct ifnet *); 119 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 120 static void wpi_fix_channel(struct ieee80211com *, struct mbuf *); 121 static void wpi_mem_lock(struct wpi_softc *); 122 static void wpi_mem_unlock(struct wpi_softc *); 123 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 124 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 125 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 126 const uint32_t *, int); 127 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 128 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 129 static int wpi_load_firmware(struct wpi_softc *); 130 static void wpi_calib_timeout(void *); 131 static void wpi_iter_func(void *, struct ieee80211_node *); 132 static void wpi_power_calibration(struct wpi_softc *, int); 133 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 134 struct wpi_rx_data *); 135 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 136 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 137 static void wpi_notif_intr(struct wpi_softc *); 138 static int wpi_intr(void *); 139 static void wpi_read_eeprom(struct wpi_softc *); 140 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 141 static void wpi_read_eeprom_group(struct wpi_softc *, int); 142 static uint8_t wpi_plcp_signal(int); 143 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 144 struct ieee80211_node *, int); 145 static void wpi_start(struct ifnet *); 146 static void wpi_watchdog(struct ifnet *); 147 static int wpi_ioctl(struct ifnet *, u_long, void *); 148 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 149 static int wpi_wme_update(struct ieee80211com *); 150 static int wpi_mrr_setup(struct wpi_softc *); 151 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 152 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 153 static int wpi_set_txpower(struct wpi_softc *, 154 struct ieee80211_channel *, int); 155 static int wpi_get_power_index(struct wpi_softc *, 156 struct wpi_power_group *, struct ieee80211_channel *, int); 157 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 158 static int wpi_auth(struct wpi_softc *); 159 static int wpi_scan(struct wpi_softc *, uint16_t); 160 static int wpi_config(struct wpi_softc *); 161 static void wpi_stop_master(struct wpi_softc *); 162 static int wpi_power_up(struct wpi_softc *); 163 static int wpi_reset(struct wpi_softc *); 164 static void wpi_hw_config(struct wpi_softc *); 165 static int wpi_init(struct ifnet *); 166 static void wpi_stop(struct ifnet *, int); 167 168 CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 169 wpi_detach, NULL); 170 171 static int 172 wpi_match(device_t parent, struct cfdata *match __unused, void *aux) 173 { 174 struct pci_attach_args *pa = aux; 175 176 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 177 return 0; 178 179 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 180 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 181 return 1; 182 183 return 0; 184 } 185 186 /* Base Address Register */ 187 #define WPI_PCI_BAR0 0x10 188 189 static void 190 wpi_attach(device_t parent __unused, device_t self, void *aux) 191 { 192 struct wpi_softc *sc = device_private(self); 193 struct ieee80211com *ic = &sc->sc_ic; 194 struct ifnet *ifp = &sc->sc_ec.ec_if; 195 struct pci_attach_args *pa = aux; 196 const char *intrstr; 197 char devinfo[256]; 198 bus_space_tag_t memt; 199 bus_space_handle_t memh; 200 pci_intr_handle_t ih; 201 pcireg_t data; 202 int error, ac, revision; 203 204 sc->sc_pct = pa->pa_pc; 205 sc->sc_pcitag = pa->pa_tag; 206 207 callout_init(&sc->calib_to, 0); 208 callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); 209 210 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 211 revision = PCI_REVISION(pa->pa_class); 212 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 213 214 /* clear device specific PCI configuration register 0x41 */ 215 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 216 data &= ~0x0000ff00; 217 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 218 219 /* enable bus-mastering */ 220 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 221 data |= PCI_COMMAND_MASTER_ENABLE; 222 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 223 224 /* map the register window */ 225 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 226 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 227 if (error != 0) { 228 aprint_error_dev(self, "could not map memory space\n"); 229 return; 230 } 231 232 sc->sc_st = memt; 233 sc->sc_sh = memh; 234 sc->sc_dmat = pa->pa_dmat; 235 236 if (pci_intr_map(pa, &ih) != 0) { 237 aprint_error_dev(self, "could not map interrupt\n"); 238 return; 239 } 240 241 intrstr = pci_intr_string(sc->sc_pct, ih); 242 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 243 if (sc->sc_ih == NULL) { 244 aprint_error_dev(self, "could not establish interrupt"); 245 if (intrstr != NULL) 246 aprint_error(" at %s", intrstr); 247 aprint_error("\n"); 248 return; 249 } 250 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 251 252 if (wpi_reset(sc) != 0) { 253 aprint_error_dev(self, "could not reset adapter\n"); 254 return; 255 } 256 257 /* 258 * Allocate DMA memory for firmware transfers. 259 */ 260 if ((error = wpi_alloc_fwmem(sc)) != 0) { 261 aprint_error("could not allocate firmware memory\n"); 262 return; 263 } 264 265 /* 266 * Allocate shared page and Tx/Rx rings. 267 */ 268 if ((error = wpi_alloc_shared(sc)) != 0) { 269 aprint_error_dev(self, "could not allocate shared area\n"); 270 goto fail1; 271 } 272 273 if ((error = wpi_alloc_rpool(sc)) != 0) { 274 aprint_error_dev(self, "could not allocate Rx buffers\n"); 275 goto fail2; 276 } 277 278 for (ac = 0; ac < 4; ac++) { 279 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 280 if (error != 0) { 281 aprint_error_dev(self, "could not allocate Tx ring %d\n", ac); 282 goto fail3; 283 } 284 } 285 286 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 287 if (error != 0) { 288 aprint_error_dev(self, "could not allocate command ring\n"); 289 goto fail3; 290 } 291 292 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 293 aprint_error_dev(self, "could not allocate Rx ring\n"); 294 goto fail4; 295 } 296 297 ic->ic_ifp = ifp; 298 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 299 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 300 ic->ic_state = IEEE80211_S_INIT; 301 302 /* set device capabilities */ 303 ic->ic_caps = 304 IEEE80211_C_IBSS | /* IBSS mode support */ 305 IEEE80211_C_WPA | /* 802.11i */ 306 IEEE80211_C_MONITOR | /* monitor mode supported */ 307 IEEE80211_C_TXPMGT | /* tx power management */ 308 IEEE80211_C_SHSLOT | /* short slot time supported */ 309 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 310 IEEE80211_C_WME; /* 802.11e */ 311 312 /* read supported channels and MAC address from EEPROM */ 313 wpi_read_eeprom(sc); 314 315 /* set supported .11a, .11b, .11g rates */ 316 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 317 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 318 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 319 320 ic->ic_ibss_chan = &ic->ic_channels[0]; 321 322 ifp->if_softc = sc; 323 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 324 ifp->if_init = wpi_init; 325 ifp->if_stop = wpi_stop; 326 ifp->if_ioctl = wpi_ioctl; 327 ifp->if_start = wpi_start; 328 ifp->if_watchdog = wpi_watchdog; 329 IFQ_SET_READY(&ifp->if_snd); 330 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 331 332 if_attach(ifp); 333 ieee80211_ifattach(ic); 334 /* override default methods */ 335 ic->ic_node_alloc = wpi_node_alloc; 336 ic->ic_newassoc = wpi_newassoc; 337 ic->ic_wme.wme_update = wpi_wme_update; 338 339 /* override state transition machine */ 340 sc->sc_newstate = ic->ic_newstate; 341 ic->ic_newstate = wpi_newstate; 342 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 343 344 sc->amrr.amrr_min_success_threshold = 1; 345 sc->amrr.amrr_max_success_threshold = 15; 346 347 /* set powerhook */ 348 sc->powerhook = powerhook_establish(device_xname(self), wpi_power, sc); 349 350 #if NBPFILTER > 0 351 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 352 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 353 &sc->sc_drvbpf); 354 355 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 356 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 357 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 358 359 sc->sc_txtap_len = sizeof sc->sc_txtapu; 360 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 361 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 362 #endif 363 364 ieee80211_announce(ic); 365 366 return; 367 368 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 369 fail3: while (--ac >= 0) 370 wpi_free_tx_ring(sc, &sc->txq[ac]); 371 wpi_free_rpool(sc); 372 fail2: wpi_free_shared(sc); 373 fail1: wpi_free_fwmem(sc); 374 } 375 376 static int 377 wpi_detach(device_t self, int flags __unused) 378 { 379 struct wpi_softc *sc = device_private(self); 380 struct ifnet *ifp = sc->sc_ic.ic_ifp; 381 int ac; 382 383 wpi_stop(ifp, 1); 384 385 #if NBPFILTER > 0 386 if (ifp != NULL) 387 bpfdetach(ifp); 388 #endif 389 ieee80211_ifdetach(&sc->sc_ic); 390 if (ifp != NULL) 391 if_detach(ifp); 392 393 for (ac = 0; ac < 4; ac++) 394 wpi_free_tx_ring(sc, &sc->txq[ac]); 395 wpi_free_tx_ring(sc, &sc->cmdq); 396 wpi_free_rx_ring(sc, &sc->rxq); 397 wpi_free_rpool(sc); 398 wpi_free_shared(sc); 399 400 if (sc->sc_ih != NULL) { 401 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 402 sc->sc_ih = NULL; 403 } 404 405 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 406 407 return 0; 408 } 409 410 static void 411 wpi_power(int why, void *arg) 412 { 413 struct wpi_softc *sc = arg; 414 struct ifnet *ifp; 415 pcireg_t data; 416 int s; 417 418 if (why != PWR_RESUME) 419 return; 420 421 /* clear device specific PCI configuration register 0x41 */ 422 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 423 data &= ~0x0000ff00; 424 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 425 426 s = splnet(); 427 ifp = sc->sc_ic.ic_ifp; 428 if (ifp->if_flags & IFF_UP) { 429 ifp->if_init(ifp); 430 if (ifp->if_flags & IFF_RUNNING) 431 ifp->if_start(ifp); 432 } 433 splx(s); 434 } 435 436 static int 437 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 438 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 439 { 440 int nsegs, error; 441 442 dma->tag = tag; 443 dma->size = size; 444 445 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 446 if (error != 0) 447 goto fail; 448 449 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 450 flags); 451 if (error != 0) 452 goto fail; 453 454 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 455 if (error != 0) 456 goto fail; 457 458 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 459 if (error != 0) 460 goto fail; 461 462 memset(dma->vaddr, 0, size); 463 464 dma->paddr = dma->map->dm_segs[0].ds_addr; 465 if (kvap != NULL) 466 *kvap = dma->vaddr; 467 468 return 0; 469 470 fail: wpi_dma_contig_free(dma); 471 return error; 472 } 473 474 static void 475 wpi_dma_contig_free(struct wpi_dma_info *dma) 476 { 477 if (dma->map != NULL) { 478 if (dma->vaddr != NULL) { 479 bus_dmamap_unload(dma->tag, dma->map); 480 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 481 bus_dmamem_free(dma->tag, &dma->seg, 1); 482 dma->vaddr = NULL; 483 } 484 bus_dmamap_destroy(dma->tag, dma->map); 485 dma->map = NULL; 486 } 487 } 488 489 /* 490 * Allocate a shared page between host and NIC. 491 */ 492 static int 493 wpi_alloc_shared(struct wpi_softc *sc) 494 { 495 int error; 496 /* must be aligned on a 4K-page boundary */ 497 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 498 (void **)&sc->shared, sizeof (struct wpi_shared), 499 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 500 if (error != 0) 501 aprint_error_dev(sc->sc_dev, 502 "could not allocate shared area DMA memory\n"); 503 504 return error; 505 } 506 507 static void 508 wpi_free_shared(struct wpi_softc *sc) 509 { 510 wpi_dma_contig_free(&sc->shared_dma); 511 } 512 513 /* 514 * Allocate DMA-safe memory for firmware transfer. 515 */ 516 static int 517 wpi_alloc_fwmem(struct wpi_softc *sc) 518 { 519 int error; 520 /* allocate enough contiguous space to store text and data */ 521 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 522 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 523 BUS_DMA_NOWAIT); 524 525 if (error != 0) 526 aprint_error_dev(sc->sc_dev, 527 "could not allocate firmware transfer area" 528 "DMA memory\n"); 529 return error; 530 } 531 532 static void 533 wpi_free_fwmem(struct wpi_softc *sc) 534 { 535 wpi_dma_contig_free(&sc->fw_dma); 536 } 537 538 539 static struct wpi_rbuf * 540 wpi_alloc_rbuf(struct wpi_softc *sc) 541 { 542 struct wpi_rbuf *rbuf; 543 544 rbuf = SLIST_FIRST(&sc->rxq.freelist); 545 if (rbuf == NULL) 546 return NULL; 547 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 548 sc->rxq.nb_free_entries --; 549 550 return rbuf; 551 } 552 553 /* 554 * This is called automatically by the network stack when the mbuf to which our 555 * Rx buffer is attached is freed. 556 */ 557 static void 558 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 559 { 560 struct wpi_rbuf *rbuf = arg; 561 struct wpi_softc *sc = rbuf->sc; 562 563 /* put the buffer back in the free list */ 564 565 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 566 sc->rxq.nb_free_entries ++; 567 568 if (__predict_true(m != NULL)) 569 pool_cache_put(mb_cache, m); 570 } 571 572 static int 573 wpi_alloc_rpool(struct wpi_softc *sc) 574 { 575 struct wpi_rx_ring *ring = &sc->rxq; 576 struct wpi_rbuf *rbuf; 577 int i, error; 578 579 /* allocate a big chunk of DMA'able memory.. */ 580 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 581 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 582 if (error != 0) { 583 aprint_normal_dev(sc->sc_dev, 584 "could not allocate Rx buffers DMA memory\n"); 585 return error; 586 } 587 588 /* ..and split it into 3KB chunks */ 589 SLIST_INIT(&ring->freelist); 590 for (i = 0; i < WPI_RBUF_COUNT; i++) { 591 rbuf = &ring->rbuf[i]; 592 rbuf->sc = sc; /* backpointer for callbacks */ 593 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 594 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 595 596 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 597 } 598 599 ring->nb_free_entries = WPI_RBUF_COUNT; 600 return 0; 601 } 602 603 static void 604 wpi_free_rpool(struct wpi_softc *sc) 605 { 606 wpi_dma_contig_free(&sc->rxq.buf_dma); 607 } 608 609 static int 610 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 611 { 612 struct wpi_rx_data *data; 613 struct wpi_rbuf *rbuf; 614 int i, error; 615 616 ring->cur = 0; 617 618 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 619 (void **)&ring->desc, 620 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 621 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 622 if (error != 0) { 623 aprint_error_dev(sc->sc_dev, "could not allocate rx ring DMA memory\n"); 624 goto fail; 625 } 626 627 /* 628 * Setup Rx buffers. 629 */ 630 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 631 data = &ring->data[i]; 632 633 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 634 if (data->m == NULL) { 635 aprint_error_dev(sc->sc_dev, "could not allocate rx mbuf\n"); 636 error = ENOMEM; 637 goto fail; 638 } 639 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 640 m_freem(data->m); 641 data->m = NULL; 642 aprint_error_dev(sc->sc_dev, "could not allocate rx cluster\n"); 643 error = ENOMEM; 644 goto fail; 645 } 646 /* attach Rx buffer to mbuf */ 647 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 648 rbuf); 649 data->m->m_flags |= M_EXT_RW; 650 651 ring->desc[i] = htole32(rbuf->paddr); 652 } 653 654 return 0; 655 656 fail: wpi_free_rx_ring(sc, ring); 657 return error; 658 } 659 660 static void 661 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 662 { 663 int ntries; 664 665 wpi_mem_lock(sc); 666 667 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 668 for (ntries = 0; ntries < 100; ntries++) { 669 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 670 break; 671 DELAY(10); 672 } 673 #ifdef WPI_DEBUG 674 if (ntries == 100 && wpi_debug > 0) 675 aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n"); 676 #endif 677 wpi_mem_unlock(sc); 678 679 ring->cur = 0; 680 } 681 682 static void 683 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 684 { 685 int i; 686 687 wpi_dma_contig_free(&ring->desc_dma); 688 689 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 690 if (ring->data[i].m != NULL) 691 m_freem(ring->data[i].m); 692 } 693 } 694 695 static int 696 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 697 int qid) 698 { 699 struct wpi_tx_data *data; 700 int i, error; 701 702 ring->qid = qid; 703 ring->count = count; 704 ring->queued = 0; 705 ring->cur = 0; 706 707 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 708 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 709 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 710 if (error != 0) { 711 aprint_error_dev(sc->sc_dev, "could not allocate tx ring DMA memory\n"); 712 goto fail; 713 } 714 715 /* update shared page with ring's base address */ 716 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 717 718 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 719 (void **)&ring->cmd, 720 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 721 if (error != 0) { 722 aprint_error_dev(sc->sc_dev, "could not allocate tx cmd DMA memory\n"); 723 goto fail; 724 } 725 726 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 727 M_NOWAIT); 728 if (ring->data == NULL) { 729 aprint_error_dev(sc->sc_dev, "could not allocate tx data slots\n"); 730 goto fail; 731 } 732 733 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 734 735 for (i = 0; i < count; i++) { 736 data = &ring->data[i]; 737 738 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 739 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 740 &data->map); 741 if (error != 0) { 742 aprint_error_dev(sc->sc_dev, "could not create tx buf DMA map\n"); 743 goto fail; 744 } 745 } 746 747 return 0; 748 749 fail: wpi_free_tx_ring(sc, ring); 750 return error; 751 } 752 753 static void 754 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 755 { 756 struct wpi_tx_data *data; 757 int i, ntries; 758 759 wpi_mem_lock(sc); 760 761 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 762 for (ntries = 0; ntries < 100; ntries++) { 763 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 764 break; 765 DELAY(10); 766 } 767 #ifdef WPI_DEBUG 768 if (ntries == 100 && wpi_debug > 0) { 769 aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n", 770 ring->qid); 771 } 772 #endif 773 wpi_mem_unlock(sc); 774 775 for (i = 0; i < ring->count; i++) { 776 data = &ring->data[i]; 777 778 if (data->m != NULL) { 779 bus_dmamap_unload(sc->sc_dmat, data->map); 780 m_freem(data->m); 781 data->m = NULL; 782 } 783 } 784 785 ring->queued = 0; 786 ring->cur = 0; 787 } 788 789 static void 790 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 791 { 792 struct wpi_tx_data *data; 793 int i; 794 795 wpi_dma_contig_free(&ring->desc_dma); 796 wpi_dma_contig_free(&ring->cmd_dma); 797 798 if (ring->data != NULL) { 799 for (i = 0; i < ring->count; i++) { 800 data = &ring->data[i]; 801 802 if (data->m != NULL) { 803 bus_dmamap_unload(sc->sc_dmat, data->map); 804 m_freem(data->m); 805 } 806 } 807 free(ring->data, M_DEVBUF); 808 } 809 } 810 811 /*ARGUSED*/ 812 static struct ieee80211_node * 813 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 814 { 815 struct wpi_node *wn; 816 817 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 818 819 if (wn != NULL) 820 memset(wn, 0, sizeof (struct wpi_node)); 821 return (struct ieee80211_node *)wn; 822 } 823 824 static void 825 wpi_newassoc(struct ieee80211_node *ni, int isnew) 826 { 827 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 828 int i; 829 830 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 831 832 /* set rate to some reasonable initial value */ 833 for (i = ni->ni_rates.rs_nrates - 1; 834 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 835 i--); 836 ni->ni_txrate = i; 837 } 838 839 static int 840 wpi_media_change(struct ifnet *ifp) 841 { 842 int error; 843 844 error = ieee80211_media_change(ifp); 845 if (error != ENETRESET) 846 return error; 847 848 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 849 wpi_init(ifp); 850 851 return 0; 852 } 853 854 static int 855 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 856 { 857 struct ifnet *ifp = ic->ic_ifp; 858 struct wpi_softc *sc = ifp->if_softc; 859 struct ieee80211_node *ni; 860 int error; 861 862 callout_stop(&sc->calib_to); 863 864 switch (nstate) { 865 case IEEE80211_S_SCAN: 866 867 if (sc->is_scanning) 868 break; 869 870 sc->is_scanning = true; 871 ieee80211_node_table_reset(&ic->ic_scan); 872 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 873 874 /* make the link LED blink while we're scanning */ 875 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 876 877 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 878 aprint_error_dev(sc->sc_dev, "could not initiate scan\n"); 879 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 880 return error; 881 } 882 883 ic->ic_state = nstate; 884 return 0; 885 886 case IEEE80211_S_ASSOC: 887 if (ic->ic_state != IEEE80211_S_RUN) 888 break; 889 /* FALLTHROUGH */ 890 case IEEE80211_S_AUTH: 891 sc->config.associd = 0; 892 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 893 if ((error = wpi_auth(sc)) != 0) { 894 aprint_error_dev(sc->sc_dev, 895 "could not send authentication request\n"); 896 return error; 897 } 898 break; 899 900 case IEEE80211_S_RUN: 901 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 902 /* link LED blinks while monitoring */ 903 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 904 break; 905 } 906 907 ni = ic->ic_bss; 908 909 if (ic->ic_opmode != IEEE80211_M_STA) { 910 (void) wpi_auth(sc); /* XXX */ 911 wpi_setup_beacon(sc, ni); 912 } 913 914 wpi_enable_tsf(sc, ni); 915 916 /* update adapter's configuration */ 917 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 918 /* short preamble/slot time are negotiated when associating */ 919 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 920 WPI_CONFIG_SHSLOT); 921 if (ic->ic_flags & IEEE80211_F_SHSLOT) 922 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 923 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 924 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 925 sc->config.filter |= htole32(WPI_FILTER_BSS); 926 if (ic->ic_opmode != IEEE80211_M_STA) 927 sc->config.filter |= htole32(WPI_FILTER_BEACON); 928 929 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 930 931 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 932 sc->config.flags)); 933 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 934 sizeof (struct wpi_config), 1); 935 if (error != 0) { 936 aprint_error_dev(sc->sc_dev, "could not update configuration\n"); 937 return error; 938 } 939 940 /* configuration has changed, set Tx power accordingly */ 941 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 942 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 943 return error; 944 } 945 946 if (ic->ic_opmode == IEEE80211_M_STA) { 947 /* fake a join to init the tx rate */ 948 wpi_newassoc(ni, 1); 949 } 950 951 /* start periodic calibration timer */ 952 sc->calib_cnt = 0; 953 callout_schedule(&sc->calib_to, hz/2); 954 955 /* link LED always on while associated */ 956 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 957 break; 958 959 case IEEE80211_S_INIT: 960 sc->is_scanning = false; 961 break; 962 } 963 964 return sc->sc_newstate(ic, nstate, arg); 965 } 966 967 /* 968 * XXX: Hack to set the current channel to the value advertised in beacons or 969 * probe responses. Only used during AP detection. 970 * XXX: Duplicated from if_iwi.c 971 */ 972 static void 973 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 974 { 975 struct ieee80211_frame *wh; 976 uint8_t subtype; 977 uint8_t *frm, *efrm; 978 979 wh = mtod(m, struct ieee80211_frame *); 980 981 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 982 return; 983 984 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 985 986 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 987 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 988 return; 989 990 frm = (uint8_t *)(wh + 1); 991 efrm = mtod(m, uint8_t *) + m->m_len; 992 993 frm += 12; /* skip tstamp, bintval and capinfo fields */ 994 while (frm < efrm) { 995 if (*frm == IEEE80211_ELEMID_DSPARMS) 996 #if IEEE80211_CHAN_MAX < 255 997 if (frm[2] <= IEEE80211_CHAN_MAX) 998 #endif 999 ic->ic_curchan = &ic->ic_channels[frm[2]]; 1000 1001 frm += frm[1] + 2; 1002 } 1003 } 1004 1005 /* 1006 * Grab exclusive access to NIC memory. 1007 */ 1008 static void 1009 wpi_mem_lock(struct wpi_softc *sc) 1010 { 1011 uint32_t tmp; 1012 int ntries; 1013 1014 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1015 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1016 1017 /* spin until we actually get the lock */ 1018 for (ntries = 0; ntries < 1000; ntries++) { 1019 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1020 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1021 break; 1022 DELAY(10); 1023 } 1024 if (ntries == 1000) 1025 aprint_error_dev(sc->sc_dev, "could not lock memory\n"); 1026 } 1027 1028 /* 1029 * Release lock on NIC memory. 1030 */ 1031 static void 1032 wpi_mem_unlock(struct wpi_softc *sc) 1033 { 1034 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1035 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1036 } 1037 1038 static uint32_t 1039 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1040 { 1041 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1042 return WPI_READ(sc, WPI_READ_MEM_DATA); 1043 } 1044 1045 static void 1046 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1047 { 1048 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1049 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1050 } 1051 1052 static void 1053 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1054 const uint32_t *data, int wlen) 1055 { 1056 for (; wlen > 0; wlen--, data++, addr += 4) 1057 wpi_mem_write(sc, addr, *data); 1058 } 1059 1060 1061 /* 1062 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1063 * instead of using the traditional bit-bang method. 1064 */ 1065 static int 1066 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1067 { 1068 uint8_t *out = data; 1069 uint32_t val; 1070 int ntries; 1071 1072 wpi_mem_lock(sc); 1073 for (; len > 0; len -= 2, addr++) { 1074 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1075 1076 for (ntries = 0; ntries < 10; ntries++) { 1077 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1078 WPI_EEPROM_READY) 1079 break; 1080 DELAY(5); 1081 } 1082 if (ntries == 10) { 1083 aprint_error_dev(sc->sc_dev, "could not read EEPROM\n"); 1084 return ETIMEDOUT; 1085 } 1086 *out++ = val >> 16; 1087 if (len > 1) 1088 *out++ = val >> 24; 1089 } 1090 wpi_mem_unlock(sc); 1091 1092 return 0; 1093 } 1094 1095 /* 1096 * The firmware boot code is small and is intended to be copied directly into 1097 * the NIC internal memory. 1098 */ 1099 int 1100 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1101 { 1102 int ntries; 1103 1104 size /= sizeof (uint32_t); 1105 1106 wpi_mem_lock(sc); 1107 1108 /* copy microcode image into NIC memory */ 1109 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1110 (const uint32_t *)ucode, size); 1111 1112 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1113 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1114 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1115 1116 /* run microcode */ 1117 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1118 1119 /* wait for transfer to complete */ 1120 for (ntries = 0; ntries < 1000; ntries++) { 1121 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1122 break; 1123 DELAY(10); 1124 } 1125 if (ntries == 1000) { 1126 wpi_mem_unlock(sc); 1127 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1128 return ETIMEDOUT; 1129 } 1130 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1131 1132 wpi_mem_unlock(sc); 1133 1134 return 0; 1135 } 1136 1137 static int 1138 wpi_load_firmware(struct wpi_softc *sc) 1139 { 1140 struct wpi_dma_info *dma = &sc->fw_dma; 1141 struct wpi_firmware_hdr hdr; 1142 const uint8_t *init_text, *init_data, *main_text, *main_data; 1143 const uint8_t *boot_text; 1144 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1145 uint32_t boot_textsz; 1146 firmware_handle_t fw; 1147 u_char *dfw; 1148 size_t size; 1149 int error; 1150 1151 /* load firmware image from disk */ 1152 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1153 aprint_error_dev(sc->sc_dev, "could not read firmware file\n"); 1154 goto fail1; 1155 } 1156 1157 size = firmware_get_size(fw); 1158 1159 /* extract firmware header information */ 1160 if (size < sizeof (struct wpi_firmware_hdr)) { 1161 aprint_error_dev(sc->sc_dev, "truncated firmware header: %zu bytes\n", 1162 size); 1163 error = EINVAL; 1164 goto fail2; 1165 } 1166 1167 if ((error = firmware_read(fw, 0, &hdr, 1168 sizeof (struct wpi_firmware_hdr))) != 0) { 1169 aprint_error_dev(sc->sc_dev, "can't get firmware header\n"); 1170 goto fail2; 1171 } 1172 1173 main_textsz = le32toh(hdr.main_textsz); 1174 main_datasz = le32toh(hdr.main_datasz); 1175 init_textsz = le32toh(hdr.init_textsz); 1176 init_datasz = le32toh(hdr.init_datasz); 1177 boot_textsz = le32toh(hdr.boot_textsz); 1178 1179 /* sanity-check firmware segments sizes */ 1180 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1181 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1182 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1183 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1184 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1185 (boot_textsz & 3) != 0) { 1186 aprint_error_dev(sc->sc_dev, "invalid firmware header\n"); 1187 error = EINVAL; 1188 goto fail2; 1189 } 1190 1191 /* check that all firmware segments are present */ 1192 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1193 main_datasz + init_textsz + init_datasz + boot_textsz) { 1194 aprint_error_dev(sc->sc_dev, "firmware file too short: %zu bytes\n", 1195 size); 1196 error = EINVAL; 1197 goto fail2; 1198 } 1199 1200 dfw = firmware_malloc(size); 1201 if (dfw == NULL) { 1202 aprint_error_dev(sc->sc_dev, "not enough memory to stock firmware\n"); 1203 error = ENOMEM; 1204 goto fail2; 1205 } 1206 1207 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1208 aprint_error_dev(sc->sc_dev, "can't get firmware\n"); 1209 goto fail2; 1210 } 1211 1212 /* get pointers to firmware segments */ 1213 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1214 main_data = main_text + main_textsz; 1215 init_text = main_data + main_datasz; 1216 init_data = init_text + init_textsz; 1217 boot_text = init_data + init_datasz; 1218 1219 /* copy initialization images into pre-allocated DMA-safe memory */ 1220 memcpy(dma->vaddr, init_data, init_datasz); 1221 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1222 1223 /* tell adapter where to find initialization images */ 1224 wpi_mem_lock(sc); 1225 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1226 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1227 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1228 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1229 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1230 wpi_mem_unlock(sc); 1231 1232 /* load firmware boot code */ 1233 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1234 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1235 goto fail3; 1236 } 1237 1238 /* now press "execute" ;-) */ 1239 WPI_WRITE(sc, WPI_RESET, 0); 1240 1241 /* ..and wait at most one second for adapter to initialize */ 1242 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1243 /* this isn't what was supposed to happen.. */ 1244 aprint_error_dev(sc->sc_dev, 1245 "timeout waiting for adapter to initialize\n"); 1246 } 1247 1248 /* copy runtime images into pre-allocated DMA-safe memory */ 1249 memcpy(dma->vaddr, main_data, main_datasz); 1250 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1251 1252 /* tell adapter where to find runtime images */ 1253 wpi_mem_lock(sc); 1254 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1255 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1256 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1257 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1258 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1259 wpi_mem_unlock(sc); 1260 1261 /* wait at most one second for second alive notification */ 1262 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1263 /* this isn't what was supposed to happen.. */ 1264 aprint_error_dev(sc->sc_dev, 1265 "timeout waiting for adapter to initialize\n"); 1266 } 1267 1268 1269 fail3: firmware_free(dfw,size); 1270 fail2: firmware_close(fw); 1271 fail1: return error; 1272 } 1273 1274 static void 1275 wpi_calib_timeout(void *arg) 1276 { 1277 struct wpi_softc *sc = arg; 1278 struct ieee80211com *ic = &sc->sc_ic; 1279 int temp, s; 1280 1281 /* automatic rate control triggered every 500ms */ 1282 if (ic->ic_fixed_rate == -1) { 1283 s = splnet(); 1284 if (ic->ic_opmode == IEEE80211_M_STA) 1285 wpi_iter_func(sc, ic->ic_bss); 1286 else 1287 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1288 splx(s); 1289 } 1290 1291 /* update sensor data */ 1292 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1293 1294 /* automatic power calibration every 60s */ 1295 if (++sc->calib_cnt >= 120) { 1296 wpi_power_calibration(sc, temp); 1297 sc->calib_cnt = 0; 1298 } 1299 1300 callout_schedule(&sc->calib_to, hz/2); 1301 } 1302 1303 static void 1304 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1305 { 1306 struct wpi_softc *sc = arg; 1307 struct wpi_node *wn = (struct wpi_node *)ni; 1308 1309 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1310 } 1311 1312 /* 1313 * This function is called periodically (every 60 seconds) to adjust output 1314 * power to temperature changes. 1315 */ 1316 void 1317 wpi_power_calibration(struct wpi_softc *sc, int temp) 1318 { 1319 /* sanity-check read value */ 1320 if (temp < -260 || temp > 25) { 1321 /* this can't be correct, ignore */ 1322 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1323 return; 1324 } 1325 1326 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1327 1328 /* adjust Tx power if need be */ 1329 if (abs(temp - sc->temp) <= 6) 1330 return; 1331 1332 sc->temp = temp; 1333 1334 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1335 /* just warn, too bad for the automatic calibration... */ 1336 aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n"); 1337 } 1338 } 1339 1340 static void 1341 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1342 struct wpi_rx_data *data) 1343 { 1344 struct ieee80211com *ic = &sc->sc_ic; 1345 struct ifnet *ifp = ic->ic_ifp; 1346 struct wpi_rx_ring *ring = &sc->rxq; 1347 struct wpi_rx_stat *stat; 1348 struct wpi_rx_head *head; 1349 struct wpi_rx_tail *tail; 1350 struct wpi_rbuf *rbuf; 1351 struct ieee80211_frame *wh; 1352 struct ieee80211_node *ni; 1353 struct mbuf *m, *mnew; 1354 int data_off ; 1355 1356 stat = (struct wpi_rx_stat *)(desc + 1); 1357 1358 if (stat->len > WPI_STAT_MAXLEN) { 1359 aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n"); 1360 ifp->if_ierrors++; 1361 return; 1362 } 1363 1364 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1365 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1366 1367 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1368 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1369 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1370 le64toh(tail->tstamp))); 1371 1372 /* 1373 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1374 * to radiotap in monitor mode). 1375 */ 1376 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1377 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1378 ifp->if_ierrors++; 1379 return; 1380 } 1381 1382 /* Compute where are the useful datas */ 1383 data_off = (char*)(head + 1) - mtod(data->m, char*); 1384 1385 /* 1386 * If the number of free entry is too low 1387 * just dup the data->m socket and reuse the same rbuf entry 1388 */ 1389 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1390 1391 /* Prepare the mbuf for the m_dup */ 1392 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1393 data->m->m_data = (char*) data->m->m_data + data_off; 1394 1395 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1396 1397 /* Restore the m_data pointer for future use */ 1398 data->m->m_data = (char*) data->m->m_data - data_off; 1399 1400 if (m == NULL) { 1401 ifp->if_ierrors++; 1402 return; 1403 } 1404 } else { 1405 1406 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1407 if (mnew == NULL) { 1408 ifp->if_ierrors++; 1409 return; 1410 } 1411 1412 rbuf = wpi_alloc_rbuf(sc); 1413 KASSERT(rbuf != NULL); 1414 1415 /* attach Rx buffer to mbuf */ 1416 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1417 rbuf); 1418 mnew->m_flags |= M_EXT_RW; 1419 1420 m = data->m; 1421 data->m = mnew; 1422 1423 /* update Rx descriptor */ 1424 ring->desc[ring->cur] = htole32(rbuf->paddr); 1425 1426 m->m_data = (char*)m->m_data + data_off; 1427 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1428 } 1429 1430 /* finalize mbuf */ 1431 m->m_pkthdr.rcvif = ifp; 1432 1433 if (ic->ic_state == IEEE80211_S_SCAN) 1434 wpi_fix_channel(ic, m); 1435 1436 #if NBPFILTER > 0 1437 if (sc->sc_drvbpf != NULL) { 1438 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1439 1440 tap->wr_flags = 0; 1441 tap->wr_chan_freq = 1442 htole16(ic->ic_channels[head->chan].ic_freq); 1443 tap->wr_chan_flags = 1444 htole16(ic->ic_channels[head->chan].ic_flags); 1445 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1446 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1447 tap->wr_tsft = tail->tstamp; 1448 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1449 switch (head->rate) { 1450 /* CCK rates */ 1451 case 10: tap->wr_rate = 2; break; 1452 case 20: tap->wr_rate = 4; break; 1453 case 55: tap->wr_rate = 11; break; 1454 case 110: tap->wr_rate = 22; break; 1455 /* OFDM rates */ 1456 case 0xd: tap->wr_rate = 12; break; 1457 case 0xf: tap->wr_rate = 18; break; 1458 case 0x5: tap->wr_rate = 24; break; 1459 case 0x7: tap->wr_rate = 36; break; 1460 case 0x9: tap->wr_rate = 48; break; 1461 case 0xb: tap->wr_rate = 72; break; 1462 case 0x1: tap->wr_rate = 96; break; 1463 case 0x3: tap->wr_rate = 108; break; 1464 /* unknown rate: should not happen */ 1465 default: tap->wr_rate = 0; 1466 } 1467 if (le16toh(head->flags) & 0x4) 1468 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1469 1470 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1471 } 1472 #endif 1473 1474 /* grab a reference to the source node */ 1475 wh = mtod(m, struct ieee80211_frame *); 1476 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1477 1478 /* send the frame to the 802.11 layer */ 1479 ieee80211_input(ic, m, ni, stat->rssi, 0); 1480 1481 /* release node reference */ 1482 ieee80211_free_node(ni); 1483 } 1484 1485 static void 1486 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1487 { 1488 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1489 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1490 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1491 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1492 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1493 1494 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1495 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1496 stat->nkill, stat->rate, le32toh(stat->duration), 1497 le32toh(stat->status))); 1498 1499 /* 1500 * Update rate control statistics for the node. 1501 * XXX we should not count mgmt frames since they're always sent at 1502 * the lowest available bit-rate. 1503 */ 1504 wn->amn.amn_txcnt++; 1505 if (stat->ntries > 0) { 1506 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1507 wn->amn.amn_retrycnt++; 1508 } 1509 1510 if ((le32toh(stat->status) & 0xff) != 1) 1511 ifp->if_oerrors++; 1512 else 1513 ifp->if_opackets++; 1514 1515 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1516 m_freem(txdata->m); 1517 txdata->m = NULL; 1518 ieee80211_free_node(txdata->ni); 1519 txdata->ni = NULL; 1520 1521 ring->queued--; 1522 1523 sc->sc_tx_timer = 0; 1524 ifp->if_flags &= ~IFF_OACTIVE; 1525 wpi_start(ifp); 1526 } 1527 1528 static void 1529 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1530 { 1531 struct wpi_tx_ring *ring = &sc->cmdq; 1532 struct wpi_tx_data *data; 1533 1534 if ((desc->qid & 7) != 4) 1535 return; /* not a command ack */ 1536 1537 data = &ring->data[desc->idx]; 1538 1539 /* if the command was mapped in a mbuf, free it */ 1540 if (data->m != NULL) { 1541 bus_dmamap_unload(sc->sc_dmat, data->map); 1542 m_freem(data->m); 1543 data->m = NULL; 1544 } 1545 1546 wakeup(&ring->cmd[desc->idx]); 1547 } 1548 1549 static void 1550 wpi_notif_intr(struct wpi_softc *sc) 1551 { 1552 struct ieee80211com *ic = &sc->sc_ic; 1553 struct ifnet *ifp = ic->ic_ifp; 1554 struct wpi_rx_desc *desc; 1555 struct wpi_rx_data *data; 1556 uint32_t hw; 1557 1558 hw = le32toh(sc->shared->next); 1559 while (sc->rxq.cur != hw) { 1560 data = &sc->rxq.data[sc->rxq.cur]; 1561 1562 desc = mtod(data->m, struct wpi_rx_desc *); 1563 1564 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1565 "len=%d\n", desc->qid, desc->idx, desc->flags, 1566 desc->type, le32toh(desc->len))); 1567 1568 if (!(desc->qid & 0x80)) /* reply to a command */ 1569 wpi_cmd_intr(sc, desc); 1570 1571 switch (desc->type) { 1572 case WPI_RX_DONE: 1573 /* a 802.11 frame was received */ 1574 wpi_rx_intr(sc, desc, data); 1575 break; 1576 1577 case WPI_TX_DONE: 1578 /* a 802.11 frame has been transmitted */ 1579 wpi_tx_intr(sc, desc); 1580 break; 1581 1582 case WPI_UC_READY: 1583 { 1584 struct wpi_ucode_info *uc = 1585 (struct wpi_ucode_info *)(desc + 1); 1586 1587 /* the microcontroller is ready */ 1588 DPRINTF(("microcode alive notification version %x " 1589 "alive %x\n", le32toh(uc->version), 1590 le32toh(uc->valid))); 1591 1592 if (le32toh(uc->valid) != 1) { 1593 aprint_error_dev(sc->sc_dev, 1594 "microcontroller initialization failed\n"); 1595 } 1596 break; 1597 } 1598 case WPI_STATE_CHANGED: 1599 { 1600 uint32_t *status = (uint32_t *)(desc + 1); 1601 1602 /* enabled/disabled notification */ 1603 DPRINTF(("state changed to %x\n", le32toh(*status))); 1604 1605 if (le32toh(*status) & 1) { 1606 /* the radio button has to be pushed */ 1607 aprint_error_dev(sc->sc_dev, "Radio transmitter is off\n"); 1608 /* turn the interface down */ 1609 ifp->if_flags &= ~IFF_UP; 1610 wpi_stop(ifp, 1); 1611 return; /* no further processing */ 1612 } 1613 break; 1614 } 1615 case WPI_START_SCAN: 1616 { 1617 struct wpi_start_scan *scan = 1618 (struct wpi_start_scan *)(desc + 1); 1619 1620 DPRINTFN(2, ("scanning channel %d status %x\n", 1621 scan->chan, le32toh(scan->status))); 1622 1623 /* fix current channel */ 1624 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1625 break; 1626 } 1627 case WPI_STOP_SCAN: 1628 { 1629 struct wpi_stop_scan *scan = 1630 (struct wpi_stop_scan *)(desc + 1); 1631 1632 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1633 scan->nchan, scan->status, scan->chan)); 1634 1635 if (scan->status == 1 && scan->chan <= 14) { 1636 /* 1637 * We just finished scanning 802.11g channels, 1638 * start scanning 802.11a ones. 1639 */ 1640 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1641 break; 1642 } 1643 sc->is_scanning = false; 1644 ieee80211_end_scan(ic); 1645 break; 1646 } 1647 } 1648 1649 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1650 } 1651 1652 /* tell the firmware what we have processed */ 1653 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1654 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1655 } 1656 1657 static int 1658 wpi_intr(void *arg) 1659 { 1660 struct wpi_softc *sc = arg; 1661 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1662 uint32_t r; 1663 1664 r = WPI_READ(sc, WPI_INTR); 1665 if (r == 0 || r == 0xffffffff) 1666 return 0; /* not for us */ 1667 1668 DPRINTFN(5, ("interrupt reg %x\n", r)); 1669 1670 /* disable interrupts */ 1671 WPI_WRITE(sc, WPI_MASK, 0); 1672 /* ack interrupts */ 1673 WPI_WRITE(sc, WPI_INTR, r); 1674 1675 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1676 aprint_error_dev(sc->sc_dev, "fatal firmware error\n"); 1677 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1678 wpi_stop(sc->sc_ic.ic_ifp, 1); 1679 return 1; 1680 } 1681 1682 if (r & WPI_RX_INTR) 1683 wpi_notif_intr(sc); 1684 1685 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1686 wakeup(sc); 1687 1688 /* re-enable interrupts */ 1689 if (ifp->if_flags & IFF_UP) 1690 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1691 1692 return 1; 1693 } 1694 1695 static uint8_t 1696 wpi_plcp_signal(int rate) 1697 { 1698 switch (rate) { 1699 /* CCK rates (returned values are device-dependent) */ 1700 case 2: return 10; 1701 case 4: return 20; 1702 case 11: return 55; 1703 case 22: return 110; 1704 1705 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1706 /* R1-R4, (u)ral is R4-R1 */ 1707 case 12: return 0xd; 1708 case 18: return 0xf; 1709 case 24: return 0x5; 1710 case 36: return 0x7; 1711 case 48: return 0x9; 1712 case 72: return 0xb; 1713 case 96: return 0x1; 1714 case 108: return 0x3; 1715 1716 /* unsupported rates (should not get there) */ 1717 default: return 0; 1718 } 1719 } 1720 1721 /* quickly determine if a given rate is CCK or OFDM */ 1722 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1723 1724 static int 1725 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1726 int ac) 1727 { 1728 struct ieee80211com *ic = &sc->sc_ic; 1729 struct wpi_tx_ring *ring = &sc->txq[ac]; 1730 struct wpi_tx_desc *desc; 1731 struct wpi_tx_data *data; 1732 struct wpi_tx_cmd *cmd; 1733 struct wpi_cmd_data *tx; 1734 struct ieee80211_frame *wh; 1735 struct ieee80211_key *k; 1736 const struct chanAccParams *cap; 1737 struct mbuf *mnew; 1738 int i, error, rate, hdrlen, noack = 0; 1739 1740 desc = &ring->desc[ring->cur]; 1741 data = &ring->data[ring->cur]; 1742 1743 wh = mtod(m0, struct ieee80211_frame *); 1744 1745 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1746 cap = &ic->ic_wme.wme_chanParams; 1747 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1748 } 1749 1750 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1751 k = ieee80211_crypto_encap(ic, ni, m0); 1752 if (k == NULL) { 1753 m_freem(m0); 1754 return ENOBUFS; 1755 } 1756 1757 /* packet header may have moved, reset our local pointer */ 1758 wh = mtod(m0, struct ieee80211_frame *); 1759 } 1760 1761 hdrlen = ieee80211_anyhdrsize(wh); 1762 1763 /* pickup a rate */ 1764 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1765 IEEE80211_FC0_TYPE_MGT) { 1766 /* mgmt frames are sent at the lowest available bit-rate */ 1767 rate = ni->ni_rates.rs_rates[0]; 1768 } else { 1769 if (ic->ic_fixed_rate != -1) { 1770 rate = ic->ic_sup_rates[ic->ic_curmode]. 1771 rs_rates[ic->ic_fixed_rate]; 1772 } else 1773 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1774 } 1775 rate &= IEEE80211_RATE_VAL; 1776 1777 1778 #if NBPFILTER > 0 1779 if (sc->sc_drvbpf != NULL) { 1780 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1781 1782 tap->wt_flags = 0; 1783 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1784 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1785 tap->wt_rate = rate; 1786 tap->wt_hwqueue = ac; 1787 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1788 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1789 1790 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1791 } 1792 #endif 1793 1794 cmd = &ring->cmd[ring->cur]; 1795 cmd->code = WPI_CMD_TX_DATA; 1796 cmd->flags = 0; 1797 cmd->qid = ring->qid; 1798 cmd->idx = ring->cur; 1799 1800 tx = (struct wpi_cmd_data *)cmd->data; 1801 tx->flags = 0; 1802 1803 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1804 tx->flags |= htole32(WPI_TX_NEED_ACK); 1805 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1806 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1807 1808 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1809 1810 /* retrieve destination node's id */ 1811 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1812 WPI_ID_BSS; 1813 1814 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1815 IEEE80211_FC0_TYPE_MGT) { 1816 /* tell h/w to set timestamp in probe responses */ 1817 if ((wh->i_fc[0] & 1818 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1819 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1820 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1821 1822 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1823 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1824 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1825 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1826 tx->timeout = htole16(3); 1827 else 1828 tx->timeout = htole16(2); 1829 } else 1830 tx->timeout = htole16(0); 1831 1832 tx->rate = wpi_plcp_signal(rate); 1833 1834 /* be very persistant at sending frames out */ 1835 tx->rts_ntries = 7; 1836 tx->data_ntries = 15; 1837 1838 tx->ofdm_mask = 0xff; 1839 tx->cck_mask = 0xf; 1840 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1841 1842 tx->len = htole16(m0->m_pkthdr.len); 1843 1844 /* save and trim IEEE802.11 header */ 1845 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 1846 m_adj(m0, hdrlen); 1847 1848 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1849 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1850 if (error != 0 && error != EFBIG) { 1851 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", error); 1852 m_freem(m0); 1853 return error; 1854 } 1855 if (error != 0) { 1856 /* too many fragments, linearize */ 1857 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1858 if (mnew == NULL) { 1859 m_freem(m0); 1860 return ENOMEM; 1861 } 1862 1863 M_COPY_PKTHDR(mnew, m0); 1864 if (m0->m_pkthdr.len > MHLEN) { 1865 MCLGET(mnew, M_DONTWAIT); 1866 if (!(mnew->m_flags & M_EXT)) { 1867 m_freem(m0); 1868 m_freem(mnew); 1869 return ENOMEM; 1870 } 1871 } 1872 1873 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1874 m_freem(m0); 1875 mnew->m_len = mnew->m_pkthdr.len; 1876 m0 = mnew; 1877 1878 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1879 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1880 if (error != 0) { 1881 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 1882 error); 1883 m_freem(m0); 1884 return error; 1885 } 1886 } 1887 1888 data->m = m0; 1889 data->ni = ni; 1890 1891 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1892 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1893 1894 /* first scatter/gather segment is used by the tx data command */ 1895 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1896 (1 + data->map->dm_nsegs) << 24); 1897 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1898 ring->cur * sizeof (struct wpi_tx_cmd)); 1899 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 1900 ((hdrlen + 3) & ~3)); 1901 1902 for (i = 1; i <= data->map->dm_nsegs; i++) { 1903 desc->segs[i].addr = 1904 htole32(data->map->dm_segs[i - 1].ds_addr); 1905 desc->segs[i].len = 1906 htole32(data->map->dm_segs[i - 1].ds_len); 1907 } 1908 1909 ring->queued++; 1910 1911 /* kick ring */ 1912 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1913 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1914 1915 return 0; 1916 } 1917 1918 static void 1919 wpi_start(struct ifnet *ifp) 1920 { 1921 struct wpi_softc *sc = ifp->if_softc; 1922 struct ieee80211com *ic = &sc->sc_ic; 1923 struct ieee80211_node *ni; 1924 struct ether_header *eh; 1925 struct mbuf *m0; 1926 int ac; 1927 1928 /* 1929 * net80211 may still try to send management frames even if the 1930 * IFF_RUNNING flag is not set... 1931 */ 1932 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1933 return; 1934 1935 for (;;) { 1936 IF_DEQUEUE(&ic->ic_mgtq, m0); 1937 if (m0 != NULL) { 1938 1939 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1940 m0->m_pkthdr.rcvif = NULL; 1941 1942 /* management frames go into ring 0 */ 1943 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1944 ifp->if_oerrors++; 1945 continue; 1946 } 1947 #if NBPFILTER > 0 1948 if (ic->ic_rawbpf != NULL) 1949 bpf_mtap(ic->ic_rawbpf, m0); 1950 #endif 1951 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1952 ifp->if_oerrors++; 1953 break; 1954 } 1955 } else { 1956 if (ic->ic_state != IEEE80211_S_RUN) 1957 break; 1958 IFQ_POLL(&ifp->if_snd, m0); 1959 if (m0 == NULL) 1960 break; 1961 1962 if (m0->m_len < sizeof (*eh) && 1963 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 1964 ifp->if_oerrors++; 1965 continue; 1966 } 1967 eh = mtod(m0, struct ether_header *); 1968 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1969 if (ni == NULL) { 1970 m_freem(m0); 1971 ifp->if_oerrors++; 1972 continue; 1973 } 1974 1975 /* classify mbuf so we can find which tx ring to use */ 1976 if (ieee80211_classify(ic, m0, ni) != 0) { 1977 m_freem(m0); 1978 ieee80211_free_node(ni); 1979 ifp->if_oerrors++; 1980 continue; 1981 } 1982 1983 /* no QoS encapsulation for EAPOL frames */ 1984 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 1985 M_WME_GETAC(m0) : WME_AC_BE; 1986 1987 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 1988 /* there is no place left in this ring */ 1989 ifp->if_flags |= IFF_OACTIVE; 1990 break; 1991 } 1992 IFQ_DEQUEUE(&ifp->if_snd, m0); 1993 #if NBPFILTER > 0 1994 if (ifp->if_bpf != NULL) 1995 bpf_mtap(ifp->if_bpf, m0); 1996 #endif 1997 m0 = ieee80211_encap(ic, m0, ni); 1998 if (m0 == NULL) { 1999 ieee80211_free_node(ni); 2000 ifp->if_oerrors++; 2001 continue; 2002 } 2003 #if NBPFILTER > 0 2004 if (ic->ic_rawbpf != NULL) 2005 bpf_mtap(ic->ic_rawbpf, m0); 2006 #endif 2007 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2008 ieee80211_free_node(ni); 2009 ifp->if_oerrors++; 2010 break; 2011 } 2012 } 2013 2014 sc->sc_tx_timer = 5; 2015 ifp->if_timer = 1; 2016 } 2017 } 2018 2019 static void 2020 wpi_watchdog(struct ifnet *ifp) 2021 { 2022 struct wpi_softc *sc = ifp->if_softc; 2023 2024 ifp->if_timer = 0; 2025 2026 if (sc->sc_tx_timer > 0) { 2027 if (--sc->sc_tx_timer == 0) { 2028 aprint_error_dev(sc->sc_dev, "device timeout\n"); 2029 ifp->if_oerrors++; 2030 ifp->if_flags &= ~IFF_UP; 2031 wpi_stop(ifp, 1); 2032 return; 2033 } 2034 ifp->if_timer = 1; 2035 } 2036 2037 ieee80211_watchdog(&sc->sc_ic); 2038 } 2039 2040 static int 2041 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2042 { 2043 #define IS_RUNNING(ifp) \ 2044 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2045 2046 struct wpi_softc *sc = ifp->if_softc; 2047 struct ieee80211com *ic = &sc->sc_ic; 2048 int s, error = 0; 2049 2050 s = splnet(); 2051 2052 switch (cmd) { 2053 case SIOCSIFFLAGS: 2054 if (ifp->if_flags & IFF_UP) { 2055 if (!(ifp->if_flags & IFF_RUNNING)) 2056 wpi_init(ifp); 2057 } else { 2058 if (ifp->if_flags & IFF_RUNNING) 2059 wpi_stop(ifp, 1); 2060 } 2061 break; 2062 2063 case SIOCADDMULTI: 2064 case SIOCDELMULTI: 2065 /* XXX no h/w multicast filter? --dyoung */ 2066 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2067 /* setup multicast filter, etc */ 2068 error = 0; 2069 } 2070 break; 2071 2072 default: 2073 error = ieee80211_ioctl(ic, cmd, data); 2074 } 2075 2076 if (error == ENETRESET) { 2077 if (IS_RUNNING(ifp) && 2078 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2079 wpi_init(ifp); 2080 error = 0; 2081 } 2082 2083 splx(s); 2084 return error; 2085 2086 #undef IS_RUNNING 2087 } 2088 2089 /* 2090 * Extract various information from EEPROM. 2091 */ 2092 static void 2093 wpi_read_eeprom(struct wpi_softc *sc) 2094 { 2095 struct ieee80211com *ic = &sc->sc_ic; 2096 char domain[4]; 2097 int i; 2098 2099 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2100 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2101 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2102 2103 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2104 sc->type)); 2105 2106 /* read and print regulatory domain */ 2107 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2108 aprint_normal(", %.4s", domain); 2109 2110 /* read and print MAC address */ 2111 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2112 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2113 2114 /* read the list of authorized channels */ 2115 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2116 wpi_read_eeprom_channels(sc, i); 2117 2118 /* read the list of power groups */ 2119 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2120 wpi_read_eeprom_group(sc, i); 2121 } 2122 2123 static void 2124 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2125 { 2126 struct ieee80211com *ic = &sc->sc_ic; 2127 const struct wpi_chan_band *band = &wpi_bands[n]; 2128 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2129 int chan, i; 2130 2131 wpi_read_prom_data(sc, band->addr, channels, 2132 band->nchan * sizeof (struct wpi_eeprom_chan)); 2133 2134 for (i = 0; i < band->nchan; i++) { 2135 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2136 continue; 2137 2138 chan = band->chan[i]; 2139 2140 if (n == 0) { /* 2GHz band */ 2141 ic->ic_channels[chan].ic_freq = 2142 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2143 ic->ic_channels[chan].ic_flags = 2144 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2145 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2146 2147 } else { /* 5GHz band */ 2148 /* 2149 * Some 3945abg adapters support channels 7, 8, 11 2150 * and 12 in the 2GHz *and* 5GHz bands. 2151 * Because of limitations in our net80211(9) stack, 2152 * we can't support these channels in 5GHz band. 2153 */ 2154 if (chan <= 14) 2155 continue; 2156 2157 ic->ic_channels[chan].ic_freq = 2158 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2159 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2160 } 2161 2162 /* is active scan allowed on this channel? */ 2163 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2164 ic->ic_channels[chan].ic_flags |= 2165 IEEE80211_CHAN_PASSIVE; 2166 } 2167 2168 /* save maximum allowed power for this channel */ 2169 sc->maxpwr[chan] = channels[i].maxpwr; 2170 2171 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2172 chan, channels[i].flags, sc->maxpwr[chan])); 2173 } 2174 } 2175 2176 static void 2177 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2178 { 2179 struct wpi_power_group *group = &sc->groups[n]; 2180 struct wpi_eeprom_group rgroup; 2181 int i; 2182 2183 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2184 sizeof rgroup); 2185 2186 /* save power group information */ 2187 group->chan = rgroup.chan; 2188 group->maxpwr = rgroup.maxpwr; 2189 /* temperature at which the samples were taken */ 2190 group->temp = (int16_t)le16toh(rgroup.temp); 2191 2192 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2193 group->chan, group->maxpwr, group->temp)); 2194 2195 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2196 group->samples[i].index = rgroup.samples[i].index; 2197 group->samples[i].power = rgroup.samples[i].power; 2198 2199 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2200 group->samples[i].index, group->samples[i].power)); 2201 } 2202 } 2203 2204 /* 2205 * Send a command to the firmware. 2206 */ 2207 static int 2208 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2209 { 2210 struct wpi_tx_ring *ring = &sc->cmdq; 2211 struct wpi_tx_desc *desc; 2212 struct wpi_tx_cmd *cmd; 2213 2214 KASSERT(size <= sizeof cmd->data); 2215 2216 desc = &ring->desc[ring->cur]; 2217 cmd = &ring->cmd[ring->cur]; 2218 2219 cmd->code = code; 2220 cmd->flags = 0; 2221 cmd->qid = ring->qid; 2222 cmd->idx = ring->cur; 2223 memcpy(cmd->data, buf, size); 2224 2225 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2226 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2227 ring->cur * sizeof (struct wpi_tx_cmd)); 2228 desc->segs[0].len = htole32(4 + size); 2229 2230 /* kick cmd ring */ 2231 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2232 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2233 2234 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2235 } 2236 2237 static int 2238 wpi_wme_update(struct ieee80211com *ic) 2239 { 2240 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2241 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2242 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2243 const struct wmeParams *wmep; 2244 struct wpi_wme_setup wme; 2245 int ac; 2246 2247 /* don't override default WME values if WME is not actually enabled */ 2248 if (!(ic->ic_flags & IEEE80211_F_WME)) 2249 return 0; 2250 2251 wme.flags = 0; 2252 for (ac = 0; ac < WME_NUM_AC; ac++) { 2253 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2254 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2255 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2256 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2257 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2258 2259 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2260 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2261 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2262 } 2263 2264 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2265 #undef WPI_USEC 2266 #undef WPI_EXP2 2267 } 2268 2269 /* 2270 * Configure h/w multi-rate retries. 2271 */ 2272 static int 2273 wpi_mrr_setup(struct wpi_softc *sc) 2274 { 2275 struct ieee80211com *ic = &sc->sc_ic; 2276 struct wpi_mrr_setup mrr; 2277 int i, error; 2278 2279 /* CCK rates (not used with 802.11a) */ 2280 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2281 mrr.rates[i].flags = 0; 2282 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2283 /* fallback to the immediate lower CCK rate (if any) */ 2284 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2285 /* try one time at this rate before falling back to "next" */ 2286 mrr.rates[i].ntries = 1; 2287 } 2288 2289 /* OFDM rates (not used with 802.11b) */ 2290 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2291 mrr.rates[i].flags = 0; 2292 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2293 /* fallback to the immediate lower rate (if any) */ 2294 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2295 mrr.rates[i].next = (i == WPI_OFDM6) ? 2296 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2297 WPI_OFDM6 : WPI_CCK2) : 2298 i - 1; 2299 /* try one time at this rate before falling back to "next" */ 2300 mrr.rates[i].ntries = 1; 2301 } 2302 2303 /* setup MRR for control frames */ 2304 mrr.which = htole32(WPI_MRR_CTL); 2305 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2306 if (error != 0) { 2307 aprint_error_dev(sc->sc_dev, "could not setup MRR for control frames\n"); 2308 return error; 2309 } 2310 2311 /* setup MRR for data frames */ 2312 mrr.which = htole32(WPI_MRR_DATA); 2313 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2314 if (error != 0) { 2315 aprint_error_dev(sc->sc_dev, "could not setup MRR for data frames\n"); 2316 return error; 2317 } 2318 2319 return 0; 2320 } 2321 2322 static void 2323 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2324 { 2325 struct wpi_cmd_led led; 2326 2327 led.which = which; 2328 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2329 led.off = off; 2330 led.on = on; 2331 2332 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2333 } 2334 2335 static void 2336 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2337 { 2338 struct wpi_cmd_tsf tsf; 2339 uint64_t val, mod; 2340 2341 memset(&tsf, 0, sizeof tsf); 2342 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2343 tsf.bintval = htole16(ni->ni_intval); 2344 tsf.lintval = htole16(10); 2345 2346 /* compute remaining time until next beacon */ 2347 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2348 mod = le64toh(tsf.tstamp) % val; 2349 tsf.binitval = htole32((uint32_t)(val - mod)); 2350 2351 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2352 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2353 2354 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2355 aprint_error_dev(sc->sc_dev, "could not enable TSF\n"); 2356 } 2357 2358 /* 2359 * Update Tx power to match what is defined for channel `c'. 2360 */ 2361 static int 2362 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2363 { 2364 struct ieee80211com *ic = &sc->sc_ic; 2365 struct wpi_power_group *group; 2366 struct wpi_cmd_txpower txpower; 2367 u_int chan; 2368 int i; 2369 2370 /* get channel number */ 2371 chan = ieee80211_chan2ieee(ic, c); 2372 2373 /* find the power group to which this channel belongs */ 2374 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2375 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2376 if (chan <= group->chan) 2377 break; 2378 } else 2379 group = &sc->groups[0]; 2380 2381 memset(&txpower, 0, sizeof txpower); 2382 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2383 txpower.chan = htole16(chan); 2384 2385 /* set Tx power for all OFDM and CCK rates */ 2386 for (i = 0; i <= 11 ; i++) { 2387 /* retrieve Tx power for this channel/rate combination */ 2388 int idx = wpi_get_power_index(sc, group, c, 2389 wpi_ridx_to_rate[i]); 2390 2391 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2392 2393 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2394 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2395 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2396 } else { 2397 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2398 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2399 } 2400 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2401 wpi_ridx_to_rate[i], idx)); 2402 } 2403 2404 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2405 } 2406 2407 /* 2408 * Determine Tx power index for a given channel/rate combination. 2409 * This takes into account the regulatory information from EEPROM and the 2410 * current temperature. 2411 */ 2412 static int 2413 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2414 struct ieee80211_channel *c, int rate) 2415 { 2416 /* fixed-point arithmetic division using a n-bit fractional part */ 2417 #define fdivround(a, b, n) \ 2418 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2419 2420 /* linear interpolation */ 2421 #define interpolate(x, x1, y1, x2, y2, n) \ 2422 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2423 2424 struct ieee80211com *ic = &sc->sc_ic; 2425 struct wpi_power_sample *sample; 2426 int pwr, idx; 2427 u_int chan; 2428 2429 /* get channel number */ 2430 chan = ieee80211_chan2ieee(ic, c); 2431 2432 /* default power is group's maximum power - 3dB */ 2433 pwr = group->maxpwr / 2; 2434 2435 /* decrease power for highest OFDM rates to reduce distortion */ 2436 switch (rate) { 2437 case 72: /* 36Mb/s */ 2438 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2439 break; 2440 case 96: /* 48Mb/s */ 2441 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2442 break; 2443 case 108: /* 54Mb/s */ 2444 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2445 break; 2446 } 2447 2448 /* never exceed channel's maximum allowed Tx power */ 2449 pwr = min(pwr, sc->maxpwr[chan]); 2450 2451 /* retrieve power index into gain tables from samples */ 2452 for (sample = group->samples; sample < &group->samples[3]; sample++) 2453 if (pwr > sample[1].power) 2454 break; 2455 /* fixed-point linear interpolation using a 19-bit fractional part */ 2456 idx = interpolate(pwr, sample[0].power, sample[0].index, 2457 sample[1].power, sample[1].index, 19); 2458 2459 /* 2460 * Adjust power index based on current temperature: 2461 * - if cooler than factory-calibrated: decrease output power 2462 * - if warmer than factory-calibrated: increase output power 2463 */ 2464 idx -= (sc->temp - group->temp) * 11 / 100; 2465 2466 /* decrease power for CCK rates (-5dB) */ 2467 if (!WPI_RATE_IS_OFDM(rate)) 2468 idx += 10; 2469 2470 /* keep power index in a valid range */ 2471 if (idx < 0) 2472 return 0; 2473 if (idx > WPI_MAX_PWR_INDEX) 2474 return WPI_MAX_PWR_INDEX; 2475 return idx; 2476 2477 #undef interpolate 2478 #undef fdivround 2479 } 2480 2481 /* 2482 * Build a beacon frame that the firmware will broadcast periodically in 2483 * IBSS or HostAP modes. 2484 */ 2485 static int 2486 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2487 { 2488 struct ieee80211com *ic = &sc->sc_ic; 2489 struct wpi_tx_ring *ring = &sc->cmdq; 2490 struct wpi_tx_desc *desc; 2491 struct wpi_tx_data *data; 2492 struct wpi_tx_cmd *cmd; 2493 struct wpi_cmd_beacon *bcn; 2494 struct ieee80211_beacon_offsets bo; 2495 struct mbuf *m0; 2496 int error; 2497 2498 desc = &ring->desc[ring->cur]; 2499 data = &ring->data[ring->cur]; 2500 2501 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2502 if (m0 == NULL) { 2503 aprint_error_dev(sc->sc_dev, "could not allocate beacon frame\n"); 2504 return ENOMEM; 2505 } 2506 2507 cmd = &ring->cmd[ring->cur]; 2508 cmd->code = WPI_CMD_SET_BEACON; 2509 cmd->flags = 0; 2510 cmd->qid = ring->qid; 2511 cmd->idx = ring->cur; 2512 2513 bcn = (struct wpi_cmd_beacon *)cmd->data; 2514 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2515 bcn->id = WPI_ID_BROADCAST; 2516 bcn->ofdm_mask = 0xff; 2517 bcn->cck_mask = 0x0f; 2518 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2519 bcn->len = htole16(m0->m_pkthdr.len); 2520 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2521 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2522 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2523 2524 /* save and trim IEEE802.11 header */ 2525 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2526 m_adj(m0, sizeof (struct ieee80211_frame)); 2527 2528 /* assume beacon frame is contiguous */ 2529 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2530 BUS_DMA_READ | BUS_DMA_NOWAIT); 2531 if (error) { 2532 aprint_error_dev(sc->sc_dev, "could not map beacon\n"); 2533 m_freem(m0); 2534 return error; 2535 } 2536 2537 data->m = m0; 2538 2539 /* first scatter/gather segment is used by the beacon command */ 2540 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2541 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2542 ring->cur * sizeof (struct wpi_tx_cmd)); 2543 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2544 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2545 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2546 2547 /* kick cmd ring */ 2548 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2549 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2550 2551 return 0; 2552 } 2553 2554 static int 2555 wpi_auth(struct wpi_softc *sc) 2556 { 2557 struct ieee80211com *ic = &sc->sc_ic; 2558 struct ieee80211_node *ni = ic->ic_bss; 2559 struct wpi_node_info node; 2560 int error; 2561 2562 /* update adapter's configuration */ 2563 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2564 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2565 sc->config.flags = htole32(WPI_CONFIG_TSF); 2566 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2567 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2568 WPI_CONFIG_24GHZ); 2569 } 2570 switch (ic->ic_curmode) { 2571 case IEEE80211_MODE_11A: 2572 sc->config.cck_mask = 0; 2573 sc->config.ofdm_mask = 0x15; 2574 break; 2575 case IEEE80211_MODE_11B: 2576 sc->config.cck_mask = 0x03; 2577 sc->config.ofdm_mask = 0; 2578 break; 2579 default: /* assume 802.11b/g */ 2580 sc->config.cck_mask = 0x0f; 2581 sc->config.ofdm_mask = 0x15; 2582 } 2583 2584 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2585 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2586 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2587 sizeof (struct wpi_config), 1); 2588 if (error != 0) { 2589 aprint_error_dev(sc->sc_dev, "could not configure\n"); 2590 return error; 2591 } 2592 2593 /* configuration has changed, set Tx power accordingly */ 2594 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2595 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2596 return error; 2597 } 2598 2599 /* add default node */ 2600 memset(&node, 0, sizeof node); 2601 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2602 node.id = WPI_ID_BSS; 2603 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2604 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2605 node.action = htole32(WPI_ACTION_SET_RATE); 2606 node.antenna = WPI_ANTENNA_BOTH; 2607 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2608 if (error != 0) { 2609 aprint_error_dev(sc->sc_dev, "could not add BSS node\n"); 2610 return error; 2611 } 2612 2613 return 0; 2614 } 2615 2616 /* 2617 * Send a scan request to the firmware. Since this command is huge, we map it 2618 * into a mbuf instead of using the pre-allocated set of commands. 2619 */ 2620 static int 2621 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2622 { 2623 struct ieee80211com *ic = &sc->sc_ic; 2624 struct wpi_tx_ring *ring = &sc->cmdq; 2625 struct wpi_tx_desc *desc; 2626 struct wpi_tx_data *data; 2627 struct wpi_tx_cmd *cmd; 2628 struct wpi_scan_hdr *hdr; 2629 struct wpi_scan_chan *chan; 2630 struct ieee80211_frame *wh; 2631 struct ieee80211_rateset *rs; 2632 struct ieee80211_channel *c; 2633 enum ieee80211_phymode mode; 2634 uint8_t *frm; 2635 int nrates, pktlen, error; 2636 2637 desc = &ring->desc[ring->cur]; 2638 data = &ring->data[ring->cur]; 2639 2640 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2641 if (data->m == NULL) { 2642 aprint_error_dev(sc->sc_dev, 2643 "could not allocate mbuf for scan command\n"); 2644 return ENOMEM; 2645 } 2646 2647 MCLGET(data->m, M_DONTWAIT); 2648 if (!(data->m->m_flags & M_EXT)) { 2649 m_freem(data->m); 2650 data->m = NULL; 2651 aprint_error_dev(sc->sc_dev, 2652 "could not allocate mbuf for scan command\n"); 2653 return ENOMEM; 2654 } 2655 2656 cmd = mtod(data->m, struct wpi_tx_cmd *); 2657 cmd->code = WPI_CMD_SCAN; 2658 cmd->flags = 0; 2659 cmd->qid = ring->qid; 2660 cmd->idx = ring->cur; 2661 2662 hdr = (struct wpi_scan_hdr *)cmd->data; 2663 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2664 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2665 hdr->id = WPI_ID_BROADCAST; 2666 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2667 2668 /* 2669 * Move to the next channel if no packets are received within 5 msecs 2670 * after sending the probe request (this helps to reduce the duration 2671 * of active scans). 2672 */ 2673 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2674 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2675 2676 if (flags & IEEE80211_CHAN_A) { 2677 hdr->crc_threshold = htole16(1); 2678 /* send probe requests at 6Mbps */ 2679 hdr->rate = wpi_plcp_signal(12); 2680 } else { 2681 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2682 /* send probe requests at 1Mbps */ 2683 hdr->rate = wpi_plcp_signal(2); 2684 } 2685 2686 /* for directed scans, firmware inserts the essid IE itself */ 2687 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2688 hdr->essid[0].len = ic->ic_des_esslen; 2689 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2690 2691 /* 2692 * Build a probe request frame. Most of the following code is a 2693 * copy & paste of what is done in net80211. 2694 */ 2695 wh = (struct ieee80211_frame *)(hdr + 1); 2696 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2697 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2698 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2699 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2700 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2701 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2702 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2703 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2704 2705 frm = (uint8_t *)(wh + 1); 2706 2707 /* add empty essid IE (firmware generates it for directed scans) */ 2708 *frm++ = IEEE80211_ELEMID_SSID; 2709 *frm++ = 0; 2710 2711 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2712 rs = &ic->ic_sup_rates[mode]; 2713 2714 /* add supported rates IE */ 2715 *frm++ = IEEE80211_ELEMID_RATES; 2716 nrates = rs->rs_nrates; 2717 if (nrates > IEEE80211_RATE_SIZE) 2718 nrates = IEEE80211_RATE_SIZE; 2719 *frm++ = nrates; 2720 memcpy(frm, rs->rs_rates, nrates); 2721 frm += nrates; 2722 2723 /* add supported xrates IE */ 2724 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2725 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2726 *frm++ = IEEE80211_ELEMID_XRATES; 2727 *frm++ = nrates; 2728 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2729 frm += nrates; 2730 } 2731 2732 /* setup length of probe request */ 2733 hdr->paylen = htole16(frm - (uint8_t *)wh); 2734 2735 chan = (struct wpi_scan_chan *)frm; 2736 for (c = &ic->ic_channels[1]; 2737 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2738 if ((c->ic_flags & flags) != flags) 2739 continue; 2740 2741 chan->chan = ieee80211_chan2ieee(ic, c); 2742 chan->flags = 0; 2743 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2744 chan->flags |= WPI_CHAN_ACTIVE; 2745 if (ic->ic_des_esslen != 0) 2746 chan->flags |= WPI_CHAN_DIRECT; 2747 } 2748 chan->dsp_gain = 0x6e; 2749 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2750 chan->rf_gain = 0x3b; 2751 chan->active = htole16(10); 2752 chan->passive = htole16(110); 2753 } else { 2754 chan->rf_gain = 0x28; 2755 chan->active = htole16(20); 2756 chan->passive = htole16(120); 2757 } 2758 hdr->nchan++; 2759 chan++; 2760 2761 frm += sizeof (struct wpi_scan_chan); 2762 } 2763 hdr->len = htole16(frm - (uint8_t *)hdr); 2764 pktlen = frm - (uint8_t *)cmd; 2765 2766 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2767 NULL, BUS_DMA_NOWAIT); 2768 if (error) { 2769 aprint_error_dev(sc->sc_dev, "could not map scan command\n"); 2770 m_freem(data->m); 2771 data->m = NULL; 2772 return error; 2773 } 2774 2775 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2776 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2777 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2778 2779 /* kick cmd ring */ 2780 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2781 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2782 2783 return 0; /* will be notified async. of failure/success */ 2784 } 2785 2786 static int 2787 wpi_config(struct wpi_softc *sc) 2788 { 2789 struct ieee80211com *ic = &sc->sc_ic; 2790 struct ifnet *ifp = ic->ic_ifp; 2791 struct wpi_power power; 2792 struct wpi_bluetooth bluetooth; 2793 struct wpi_node_info node; 2794 int error; 2795 2796 memset(&power, 0, sizeof power); 2797 power.flags = htole32(WPI_POWER_CAM | 0x8); 2798 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2799 if (error != 0) { 2800 aprint_error_dev(sc->sc_dev, "could not set power mode\n"); 2801 return error; 2802 } 2803 2804 /* configure bluetooth coexistence */ 2805 memset(&bluetooth, 0, sizeof bluetooth); 2806 bluetooth.flags = 3; 2807 bluetooth.lead = 0xaa; 2808 bluetooth.kill = 1; 2809 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2810 0); 2811 if (error != 0) { 2812 aprint_error_dev(sc->sc_dev, 2813 "could not configure bluetooth coexistence\n"); 2814 return error; 2815 } 2816 2817 /* configure adapter */ 2818 memset(&sc->config, 0, sizeof (struct wpi_config)); 2819 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2820 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2821 /*set default channel*/ 2822 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2823 sc->config.flags = htole32(WPI_CONFIG_TSF); 2824 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2825 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2826 WPI_CONFIG_24GHZ); 2827 } 2828 sc->config.filter = 0; 2829 switch (ic->ic_opmode) { 2830 case IEEE80211_M_STA: 2831 sc->config.mode = WPI_MODE_STA; 2832 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2833 break; 2834 case IEEE80211_M_IBSS: 2835 case IEEE80211_M_AHDEMO: 2836 sc->config.mode = WPI_MODE_IBSS; 2837 break; 2838 case IEEE80211_M_HOSTAP: 2839 sc->config.mode = WPI_MODE_HOSTAP; 2840 break; 2841 case IEEE80211_M_MONITOR: 2842 sc->config.mode = WPI_MODE_MONITOR; 2843 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2844 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2845 break; 2846 } 2847 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2848 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2849 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2850 sizeof (struct wpi_config), 0); 2851 if (error != 0) { 2852 aprint_error_dev(sc->sc_dev, "configure command failed\n"); 2853 return error; 2854 } 2855 2856 /* configuration has changed, set Tx power accordingly */ 2857 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2858 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2859 return error; 2860 } 2861 2862 /* add broadcast node */ 2863 memset(&node, 0, sizeof node); 2864 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2865 node.id = WPI_ID_BROADCAST; 2866 node.rate = wpi_plcp_signal(2); 2867 node.action = htole32(WPI_ACTION_SET_RATE); 2868 node.antenna = WPI_ANTENNA_BOTH; 2869 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2870 if (error != 0) { 2871 aprint_error_dev(sc->sc_dev, "could not add broadcast node\n"); 2872 return error; 2873 } 2874 2875 if ((error = wpi_mrr_setup(sc)) != 0) { 2876 aprint_error_dev(sc->sc_dev, "could not setup MRR\n"); 2877 return error; 2878 } 2879 2880 return 0; 2881 } 2882 2883 static void 2884 wpi_stop_master(struct wpi_softc *sc) 2885 { 2886 uint32_t tmp; 2887 int ntries; 2888 2889 tmp = WPI_READ(sc, WPI_RESET); 2890 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2891 2892 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2893 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2894 return; /* already asleep */ 2895 2896 for (ntries = 0; ntries < 100; ntries++) { 2897 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2898 break; 2899 DELAY(10); 2900 } 2901 if (ntries == 100) { 2902 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 2903 } 2904 } 2905 2906 static int 2907 wpi_power_up(struct wpi_softc *sc) 2908 { 2909 uint32_t tmp; 2910 int ntries; 2911 2912 wpi_mem_lock(sc); 2913 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2914 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2915 wpi_mem_unlock(sc); 2916 2917 for (ntries = 0; ntries < 5000; ntries++) { 2918 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2919 break; 2920 DELAY(10); 2921 } 2922 if (ntries == 5000) { 2923 aprint_error_dev(sc->sc_dev, "timeout waiting for NIC to power up\n"); 2924 return ETIMEDOUT; 2925 } 2926 return 0; 2927 } 2928 2929 static int 2930 wpi_reset(struct wpi_softc *sc) 2931 { 2932 uint32_t tmp; 2933 int ntries; 2934 2935 /* clear any pending interrupts */ 2936 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2937 2938 tmp = WPI_READ(sc, WPI_PLL_CTL); 2939 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2940 2941 tmp = WPI_READ(sc, WPI_CHICKEN); 2942 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2943 2944 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2945 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2946 2947 /* wait for clock stabilization */ 2948 for (ntries = 0; ntries < 1000; ntries++) { 2949 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2950 break; 2951 DELAY(10); 2952 } 2953 if (ntries == 1000) { 2954 aprint_error_dev(sc->sc_dev, 2955 "timeout waiting for clock stabilization\n"); 2956 return ETIMEDOUT; 2957 } 2958 2959 /* initialize EEPROM */ 2960 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2961 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2962 aprint_error_dev(sc->sc_dev, "EEPROM not found\n"); 2963 return EIO; 2964 } 2965 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2966 2967 return 0; 2968 } 2969 2970 static void 2971 wpi_hw_config(struct wpi_softc *sc) 2972 { 2973 uint32_t rev, hw; 2974 2975 /* voodoo from the reference driver */ 2976 hw = WPI_READ(sc, WPI_HWCONFIG); 2977 2978 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 2979 rev = PCI_REVISION(rev); 2980 if ((rev & 0xc0) == 0x40) 2981 hw |= WPI_HW_ALM_MB; 2982 else if (!(rev & 0x80)) 2983 hw |= WPI_HW_ALM_MM; 2984 2985 if (sc->cap == 0x80) 2986 hw |= WPI_HW_SKU_MRC; 2987 2988 hw &= ~WPI_HW_REV_D; 2989 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2990 hw |= WPI_HW_REV_D; 2991 2992 if (sc->type > 1) 2993 hw |= WPI_HW_TYPE_B; 2994 2995 DPRINTF(("setting h/w config %x\n", hw)); 2996 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2997 } 2998 2999 static int 3000 wpi_init(struct ifnet *ifp) 3001 { 3002 struct wpi_softc *sc = ifp->if_softc; 3003 struct ieee80211com *ic = &sc->sc_ic; 3004 uint32_t tmp; 3005 int qid, ntries, error; 3006 3007 wpi_stop(ifp,1); 3008 (void)wpi_reset(sc); 3009 3010 wpi_mem_lock(sc); 3011 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3012 DELAY(20); 3013 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3014 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3015 wpi_mem_unlock(sc); 3016 3017 (void)wpi_power_up(sc); 3018 wpi_hw_config(sc); 3019 3020 /* init Rx ring */ 3021 wpi_mem_lock(sc); 3022 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3023 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3024 offsetof(struct wpi_shared, next)); 3025 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3026 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3027 wpi_mem_unlock(sc); 3028 3029 /* init Tx rings */ 3030 wpi_mem_lock(sc); 3031 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3032 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3033 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3034 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3035 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3036 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3037 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3038 3039 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3040 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3041 3042 for (qid = 0; qid < 6; qid++) { 3043 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3044 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3045 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3046 } 3047 wpi_mem_unlock(sc); 3048 3049 /* clear "radio off" and "disable command" bits (reversed logic) */ 3050 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3051 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3052 3053 /* clear any pending interrupts */ 3054 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3055 /* enable interrupts */ 3056 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3057 3058 /* not sure why/if this is necessary... */ 3059 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3060 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3061 3062 if ((error = wpi_load_firmware(sc)) != 0) { 3063 aprint_error_dev(sc->sc_dev, "could not load firmware\n"); 3064 goto fail1; 3065 } 3066 3067 /* wait for thermal sensors to calibrate */ 3068 for (ntries = 0; ntries < 1000; ntries++) { 3069 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3070 break; 3071 DELAY(10); 3072 } 3073 if (ntries == 1000) { 3074 aprint_error_dev(sc->sc_dev, 3075 "timeout waiting for thermal sensors calibration\n"); 3076 error = ETIMEDOUT; 3077 goto fail1; 3078 } 3079 3080 DPRINTF(("temperature %d\n", sc->temp)); 3081 3082 if ((error = wpi_config(sc)) != 0) { 3083 aprint_error_dev(sc->sc_dev, "could not configure device\n"); 3084 goto fail1; 3085 } 3086 3087 ifp->if_flags &= ~IFF_OACTIVE; 3088 ifp->if_flags |= IFF_RUNNING; 3089 3090 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3091 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3092 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3093 } 3094 else 3095 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3096 3097 return 0; 3098 3099 fail1: wpi_stop(ifp, 1); 3100 return error; 3101 } 3102 3103 3104 static void 3105 wpi_stop(struct ifnet *ifp, int disable) 3106 { 3107 struct wpi_softc *sc = ifp->if_softc; 3108 struct ieee80211com *ic = &sc->sc_ic; 3109 uint32_t tmp; 3110 int ac; 3111 3112 ifp->if_timer = sc->sc_tx_timer = 0; 3113 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3114 3115 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3116 3117 /* disable interrupts */ 3118 WPI_WRITE(sc, WPI_MASK, 0); 3119 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3120 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3121 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3122 3123 wpi_mem_lock(sc); 3124 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3125 wpi_mem_unlock(sc); 3126 3127 /* reset all Tx rings */ 3128 for (ac = 0; ac < 4; ac++) 3129 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3130 wpi_reset_tx_ring(sc, &sc->cmdq); 3131 3132 /* reset Rx ring */ 3133 wpi_reset_rx_ring(sc, &sc->rxq); 3134 3135 wpi_mem_lock(sc); 3136 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3137 wpi_mem_unlock(sc); 3138 3139 DELAY(5); 3140 3141 wpi_stop_master(sc); 3142 3143 tmp = WPI_READ(sc, WPI_RESET); 3144 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3145 } 3146
Indexes created Sun Sep 28 16:09:52 GMT 2025