if_wpi.c revision 1.6.2.3
1 /* $NetBSD: if_wpi.c,v 1.6.2.3 2007/09/27 15:02:10 xtraeme 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 1.6.2.3 2007/09/27 15:02:10 xtraeme 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 <machine/bus.h> 42 #include <machine/endian.h> 43 #include <machine/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(struct device *, struct cfdata *, void *); 95 static void wpi_attach(struct device *, struct device *, void *); 96 static int wpi_detach(struct device*, 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 *, caddr_t, 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, caddr_t); 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(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 169 wpi_detach, NULL); 170 171 static int 172 wpi_match(struct device *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(struct device *parent __unused, struct device *self, void *aux) 191 { 192 struct wpi_softc *sc = (struct wpi_softc *)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); 208 209 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 210 revision = PCI_REVISION(pa->pa_class); 211 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 212 213 /* clear device specific PCI configuration register 0x41 */ 214 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 215 data &= ~0x0000ff00; 216 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 217 218 /* enable bus-mastering */ 219 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 220 data |= PCI_COMMAND_MASTER_ENABLE; 221 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 222 223 /* map the register window */ 224 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 225 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 226 if (error != 0) { 227 aprint_error("%s: could not map memory space\n", 228 sc->sc_dev.dv_xname); 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("%s: could not map interrupt\n", 238 sc->sc_dev.dv_xname); 239 return; 240 } 241 242 intrstr = pci_intr_string(sc->sc_pct, ih); 243 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 244 if (sc->sc_ih == NULL) { 245 aprint_error("%s: could not establish interrupt", 246 sc->sc_dev.dv_xname); 247 if (intrstr != NULL) 248 aprint_error(" at %s", intrstr); 249 aprint_error("\n"); 250 return; 251 } 252 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 253 254 if (wpi_reset(sc) != 0) { 255 aprint_error("%s: could not reset adapter\n", 256 sc->sc_dev.dv_xname); 257 return; 258 } 259 260 /* 261 * Allocate DMA memory for firmware transfers. 262 */ 263 if ((error = wpi_alloc_fwmem(sc)) != 0) { 264 aprint_error(": could not allocate firmware memory\n"); 265 return; 266 } 267 268 /* 269 * Allocate shared page and Tx/Rx rings. 270 */ 271 if ((error = wpi_alloc_shared(sc)) != 0) { 272 aprint_error("%s: could not allocate shared area\n", 273 sc->sc_dev.dv_xname); 274 goto fail1; 275 } 276 277 if ((error = wpi_alloc_rpool(sc)) != 0) { 278 aprint_error("%s: could not allocate Rx buffers\n", 279 sc->sc_dev.dv_xname); 280 goto fail2; 281 } 282 283 for (ac = 0; ac < 4; ac++) { 284 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 285 if (error != 0) { 286 aprint_error("%s: could not allocate Tx ring %d\n", 287 sc->sc_dev.dv_xname, ac); 288 goto fail3; 289 } 290 } 291 292 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 293 if (error != 0) { 294 aprint_error("%s: could not allocate command ring\n", 295 sc->sc_dev.dv_xname); 296 goto fail3; 297 } 298 299 error = wpi_alloc_tx_ring(sc, &sc->svcq, WPI_SVC_RING_COUNT, 5); 300 if (error != 0) { 301 aprint_error("%s: could not allocate service ring\n", 302 sc->sc_dev.dv_xname); 303 goto fail4; 304 } 305 306 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 307 aprint_error("%s: could not allocate Rx ring\n", 308 sc->sc_dev.dv_xname); 309 goto fail5; 310 } 311 312 ic->ic_ifp = ifp; 313 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 314 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 315 ic->ic_state = IEEE80211_S_INIT; 316 317 /* set device capabilities */ 318 ic->ic_caps = 319 IEEE80211_C_IBSS | /* IBSS mode support */ 320 IEEE80211_C_WPA | /* 802.11i */ 321 IEEE80211_C_MONITOR | /* monitor mode supported */ 322 IEEE80211_C_TXPMGT | /* tx power management */ 323 IEEE80211_C_SHSLOT | /* short slot time supported */ 324 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 325 IEEE80211_C_WME; /* 802.11e */ 326 327 /* read supported channels and MAC address from EEPROM */ 328 wpi_read_eeprom(sc); 329 330 /* set supported .11a, .11b, .11g rates */ 331 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 332 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 333 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 334 335 ic->ic_ibss_chan = &ic->ic_channels[0]; 336 337 ifp->if_softc = sc; 338 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 339 ifp->if_init = wpi_init; 340 ifp->if_stop = wpi_stop; 341 ifp->if_ioctl = wpi_ioctl; 342 ifp->if_start = wpi_start; 343 ifp->if_watchdog = wpi_watchdog; 344 IFQ_SET_READY(&ifp->if_snd); 345 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 346 347 if_attach(ifp); 348 ieee80211_ifattach(ic); 349 /* override default methods */ 350 ic->ic_node_alloc = wpi_node_alloc; 351 ic->ic_newassoc = wpi_newassoc; 352 ic->ic_wme.wme_update = wpi_wme_update; 353 354 /* override state transition machine */ 355 sc->sc_newstate = ic->ic_newstate; 356 ic->ic_newstate = wpi_newstate; 357 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 358 359 sc->amrr.amrr_min_success_threshold = 1; 360 sc->amrr.amrr_max_success_threshold = 15; 361 362 /* set powerhook */ 363 sc->powerhook = powerhook_establish(sc->sc_dev.dv_xname, wpi_power, sc); 364 365 #if NBPFILTER > 0 366 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 367 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 368 &sc->sc_drvbpf); 369 370 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 371 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 372 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 373 374 sc->sc_txtap_len = sizeof sc->sc_txtapu; 375 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 376 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 377 #endif 378 379 ieee80211_announce(ic); 380 381 return; 382 383 fail5: wpi_free_tx_ring(sc, &sc->svcq); 384 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 385 fail3: while (--ac >= 0) 386 wpi_free_tx_ring(sc, &sc->txq[ac]); 387 wpi_free_rpool(sc); 388 fail2: wpi_free_shared(sc); 389 fail1: wpi_free_fwmem(sc); 390 } 391 392 static int 393 wpi_detach(struct device* self, int flags __unused) 394 { 395 struct wpi_softc *sc = (struct wpi_softc *)self; 396 struct ifnet *ifp = sc->sc_ic.ic_ifp; 397 int ac; 398 399 wpi_stop(ifp, 1); 400 401 #if NBPFILTER > 0 402 if (ifp != NULL) 403 bpfdetach(ifp); 404 #endif 405 ieee80211_ifdetach(&sc->sc_ic); 406 if (ifp != NULL) 407 if_detach(ifp); 408 409 for (ac = 0; ac < 4; ac++) 410 wpi_free_tx_ring(sc, &sc->txq[ac]); 411 wpi_free_tx_ring(sc, &sc->cmdq); 412 wpi_free_tx_ring(sc, &sc->svcq); 413 wpi_free_rx_ring(sc, &sc->rxq); 414 wpi_free_rpool(sc); 415 wpi_free_shared(sc); 416 417 if (sc->sc_ih != NULL) { 418 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 419 sc->sc_ih = NULL; 420 } 421 422 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 423 424 return 0; 425 } 426 427 static void 428 wpi_power(int why, void *arg) 429 { 430 struct wpi_softc *sc = arg; 431 struct ifnet *ifp; 432 pcireg_t data; 433 int s; 434 435 if (why != PWR_RESUME) 436 return; 437 438 /* clear device specific PCI configuration register 0x41 */ 439 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 440 data &= ~0x0000ff00; 441 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 442 443 s = splnet(); 444 ifp = sc->sc_ic.ic_ifp; 445 if (ifp->if_flags & IFF_UP) { 446 ifp->if_init(ifp); 447 if (ifp->if_flags & IFF_RUNNING) 448 ifp->if_start(ifp); 449 } 450 splx(s); 451 } 452 453 static int 454 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 455 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 456 { 457 int nsegs, error; 458 459 dma->tag = tag; 460 dma->size = size; 461 462 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 463 if (error != 0) 464 goto fail; 465 466 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 467 flags); 468 if (error != 0) 469 goto fail; 470 471 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 472 if (error != 0) 473 goto fail; 474 475 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 476 if (error != 0) 477 goto fail; 478 479 memset(dma->vaddr, 0, size); 480 481 dma->paddr = dma->map->dm_segs[0].ds_addr; 482 if (kvap != NULL) 483 *kvap = dma->vaddr; 484 485 return 0; 486 487 fail: wpi_dma_contig_free(dma); 488 return error; 489 } 490 491 static void 492 wpi_dma_contig_free(struct wpi_dma_info *dma) 493 { 494 if (dma->map != NULL) { 495 if (dma->vaddr != NULL) { 496 bus_dmamap_unload(dma->tag, dma->map); 497 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 498 bus_dmamem_free(dma->tag, &dma->seg, 1); 499 dma->vaddr = NULL; 500 } 501 bus_dmamap_destroy(dma->tag, dma->map); 502 dma->map = NULL; 503 } 504 } 505 506 /* 507 * Allocate a shared page between host and NIC. 508 */ 509 static int 510 wpi_alloc_shared(struct wpi_softc *sc) 511 { 512 int error; 513 /* must be aligned on a 4K-page boundary */ 514 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 515 (void **)&sc->shared, sizeof (struct wpi_shared), 516 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 517 if (error != 0) 518 aprint_error( 519 "%s: could not allocate shared area DMA memory\n", 520 sc->sc_dev.dv_xname); 521 522 return error; 523 } 524 525 static void 526 wpi_free_shared(struct wpi_softc *sc) 527 { 528 wpi_dma_contig_free(&sc->shared_dma); 529 } 530 531 /* 532 * Allocate DMA-safe memory for firmware transfer. 533 */ 534 static int 535 wpi_alloc_fwmem(struct wpi_softc *sc) 536 { 537 int error; 538 /* allocate enough contiguous space to store text and data */ 539 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 540 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 541 BUS_DMA_NOWAIT); 542 543 if (error != 0) 544 aprint_error( 545 "%s: could not allocate firmware transfer area" 546 "DMA memory\n", sc->sc_dev.dv_xname); 547 return error; 548 } 549 550 static void 551 wpi_free_fwmem(struct wpi_softc *sc) 552 { 553 wpi_dma_contig_free(&sc->fw_dma); 554 } 555 556 557 static struct wpi_rbuf * 558 wpi_alloc_rbuf(struct wpi_softc *sc) 559 { 560 struct wpi_rbuf *rbuf; 561 562 rbuf = SLIST_FIRST(&sc->rxq.freelist); 563 if (rbuf == NULL) 564 return NULL; 565 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 566 sc->rxq.nb_free_entries --; 567 568 return rbuf; 569 } 570 571 /* 572 * This is called automatically by the network stack when the mbuf to which our 573 * Rx buffer is attached is freed. 574 */ 575 static void 576 wpi_free_rbuf(struct mbuf* m, caddr_t buf, size_t size, void *arg) 577 { 578 struct wpi_rbuf *rbuf = arg; 579 struct wpi_softc *sc = rbuf->sc; 580 int s; 581 582 /* put the buffer back in the free list */ 583 584 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 585 sc->rxq.nb_free_entries ++; 586 587 if (__predict_true(m != NULL)) { 588 s = splvm(); 589 pool_cache_put(&mbpool_cache, m); 590 splx(s); 591 } 592 } 593 594 static int 595 wpi_alloc_rpool(struct wpi_softc *sc) 596 { 597 struct wpi_rx_ring *ring = &sc->rxq; 598 struct wpi_rbuf *rbuf; 599 int i, error; 600 601 /* allocate a big chunk of DMA'able memory.. */ 602 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 603 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 604 if (error != 0) { 605 aprint_normal("%s: could not allocate Rx buffers DMA memory\n", 606 sc->sc_dev.dv_xname); 607 return error; 608 } 609 610 /* ..and split it into 3KB chunks */ 611 SLIST_INIT(&ring->freelist); 612 for (i = 0; i < WPI_RBUF_COUNT; i++) { 613 rbuf = &ring->rbuf[i]; 614 rbuf->sc = sc; /* backpointer for callbacks */ 615 rbuf->vaddr = ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 616 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 617 618 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 619 } 620 621 ring->nb_free_entries = WPI_RBUF_COUNT; 622 return 0; 623 } 624 625 static void 626 wpi_free_rpool(struct wpi_softc *sc) 627 { 628 wpi_dma_contig_free(&sc->rxq.buf_dma); 629 } 630 631 static int 632 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 633 { 634 struct wpi_rx_data *data; 635 struct wpi_rbuf *rbuf; 636 int i, error; 637 638 ring->cur = 0; 639 640 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 641 (void **)&ring->desc, 642 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 643 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 644 if (error != 0) { 645 aprint_error("%s: could not allocate rx ring DMA memory\n", 646 sc->sc_dev.dv_xname); 647 goto fail; 648 } 649 650 /* 651 * Setup Rx buffers. 652 */ 653 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 654 data = &ring->data[i]; 655 656 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 657 if (data->m == NULL) { 658 aprint_error("%s: could not allocate rx mbuf\n", 659 sc->sc_dev.dv_xname); 660 error = ENOMEM; 661 goto fail; 662 } 663 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 664 m_freem(data->m); 665 data->m = NULL; 666 aprint_error("%s: could not allocate rx cluster\n", 667 sc->sc_dev.dv_xname); 668 error = ENOMEM; 669 goto fail; 670 } 671 /* attach Rx buffer to mbuf */ 672 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 673 rbuf); 674 data->m->m_flags |= M_EXT_RW; 675 676 ring->desc[i] = htole32(rbuf->paddr); 677 } 678 679 return 0; 680 681 fail: wpi_free_rx_ring(sc, ring); 682 return error; 683 } 684 685 static void 686 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 687 { 688 int ntries; 689 690 wpi_mem_lock(sc); 691 692 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 693 for (ntries = 0; ntries < 100; ntries++) { 694 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 695 break; 696 DELAY(10); 697 } 698 #ifdef WPI_DEBUG 699 if (ntries == 100 && wpi_debug > 0) 700 aprint_error("%s: timeout resetting Rx ring\n", 701 sc->sc_dev.dv_xname); 702 #endif 703 wpi_mem_unlock(sc); 704 705 ring->cur = 0; 706 } 707 708 static void 709 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 710 { 711 int i; 712 713 wpi_dma_contig_free(&ring->desc_dma); 714 715 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 716 if (ring->data[i].m != NULL) 717 m_freem(ring->data[i].m); 718 } 719 } 720 721 static int 722 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 723 int qid) 724 { 725 struct wpi_tx_data *data; 726 int i, error; 727 728 ring->qid = qid; 729 ring->count = count; 730 ring->queued = 0; 731 ring->cur = 0; 732 733 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 734 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 735 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 736 if (error != 0) { 737 aprint_error("%s: could not allocate tx ring DMA memory\n", 738 sc->sc_dev.dv_xname); 739 goto fail; 740 } 741 742 /* update shared page with ring's base address */ 743 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 744 745 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 746 (void **)&ring->cmd, 747 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 748 if (error != 0) { 749 aprint_error("%s: could not allocate tx cmd DMA memory\n", 750 sc->sc_dev.dv_xname); 751 goto fail; 752 } 753 754 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 755 M_NOWAIT); 756 if (ring->data == NULL) { 757 aprint_error("%s: could not allocate tx data slots\n", 758 sc->sc_dev.dv_xname); 759 goto fail; 760 } 761 762 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 763 764 for (i = 0; i < count; i++) { 765 data = &ring->data[i]; 766 767 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 768 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 769 &data->map); 770 if (error != 0) { 771 aprint_error("%s: could not create tx buf DMA map\n", 772 sc->sc_dev.dv_xname); 773 goto fail; 774 } 775 } 776 777 return 0; 778 779 fail: wpi_free_tx_ring(sc, ring); 780 return error; 781 } 782 783 static void 784 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 785 { 786 struct wpi_tx_data *data; 787 int i, ntries; 788 789 wpi_mem_lock(sc); 790 791 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 792 for (ntries = 0; ntries < 100; ntries++) { 793 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 794 break; 795 DELAY(10); 796 } 797 #ifdef WPI_DEBUG 798 if (ntries == 100 && wpi_debug > 0) { 799 aprint_error("%s: timeout resetting Tx ring %d\n", 800 sc->sc_dev.dv_xname, ring->qid); 801 } 802 #endif 803 wpi_mem_unlock(sc); 804 805 for (i = 0; i < ring->count; i++) { 806 data = &ring->data[i]; 807 808 if (data->m != NULL) { 809 bus_dmamap_unload(sc->sc_dmat, data->map); 810 m_freem(data->m); 811 data->m = NULL; 812 } 813 } 814 815 ring->queued = 0; 816 ring->cur = 0; 817 } 818 819 static void 820 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 821 { 822 struct wpi_tx_data *data; 823 int i; 824 825 wpi_dma_contig_free(&ring->desc_dma); 826 wpi_dma_contig_free(&ring->cmd_dma); 827 828 if (ring->data != NULL) { 829 for (i = 0; i < ring->count; i++) { 830 data = &ring->data[i]; 831 832 if (data->m != NULL) { 833 bus_dmamap_unload(sc->sc_dmat, data->map); 834 m_freem(data->m); 835 } 836 } 837 free(ring->data, M_DEVBUF); 838 } 839 } 840 841 /*ARGUSED*/ 842 static struct ieee80211_node * 843 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 844 { 845 struct wpi_node *wn; 846 847 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 848 849 if (wn != NULL) 850 memset(wn, 0, sizeof (struct wpi_node)); 851 return (struct ieee80211_node *)wn; 852 } 853 854 static void 855 wpi_newassoc(struct ieee80211_node *ni, int isnew) 856 { 857 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 858 int i; 859 860 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 861 862 /* set rate to some reasonable initial value */ 863 for (i = ni->ni_rates.rs_nrates - 1; 864 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 865 i--); 866 ni->ni_txrate = i; 867 } 868 869 static int 870 wpi_media_change(struct ifnet *ifp) 871 { 872 int error; 873 874 error = ieee80211_media_change(ifp); 875 if (error != ENETRESET) 876 return error; 877 878 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 879 wpi_init(ifp); 880 881 return 0; 882 } 883 884 static int 885 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 886 { 887 struct ifnet *ifp = ic->ic_ifp; 888 struct wpi_softc *sc = ifp->if_softc; 889 struct ieee80211_node *ni; 890 int error; 891 892 callout_stop(&sc->calib_to); 893 894 switch (nstate) { 895 case IEEE80211_S_SCAN: 896 897 if (sc->is_scanning) 898 break; 899 900 sc->is_scanning = true; 901 ieee80211_node_table_reset(&ic->ic_scan); 902 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 903 904 /* make the link LED blink while we're scanning */ 905 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 906 907 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 908 aprint_error("%s: could not initiate scan\n", 909 sc->sc_dev.dv_xname); 910 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 911 return error; 912 } 913 914 ic->ic_state = nstate; 915 return 0; 916 917 case IEEE80211_S_ASSOC: 918 if (ic->ic_state != IEEE80211_S_RUN) 919 break; 920 /* FALLTHROUGH */ 921 case IEEE80211_S_AUTH: 922 sc->config.associd = 0; 923 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 924 if ((error = wpi_auth(sc)) != 0) { 925 aprint_error("%s: could not send authentication request\n", 926 sc->sc_dev.dv_xname); 927 return error; 928 } 929 break; 930 931 case IEEE80211_S_RUN: 932 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 933 /* link LED blinks while monitoring */ 934 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 935 break; 936 } 937 938 ni = ic->ic_bss; 939 940 if (ic->ic_opmode != IEEE80211_M_STA) { 941 (void) wpi_auth(sc); /* XXX */ 942 wpi_setup_beacon(sc, ni); 943 } 944 945 wpi_enable_tsf(sc, ni); 946 947 /* update adapter's configuration */ 948 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 949 /* short preamble/slot time are negotiated when associating */ 950 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 951 WPI_CONFIG_SHSLOT); 952 if (ic->ic_flags & IEEE80211_F_SHSLOT) 953 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 954 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 955 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 956 sc->config.filter |= htole32(WPI_FILTER_BSS); 957 if (ic->ic_opmode != IEEE80211_M_STA) 958 sc->config.filter |= htole32(WPI_FILTER_BEACON); 959 960 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 961 962 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 963 sc->config.flags)); 964 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 965 sizeof (struct wpi_config), 1); 966 if (error != 0) { 967 aprint_error("%s: could not update configuration\n", 968 sc->sc_dev.dv_xname); 969 return error; 970 } 971 972 /* configuration has changed, set Tx power accordingly */ 973 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 974 aprint_error("%s: could not set Tx power\n", 975 sc->sc_dev.dv_xname); 976 return error; 977 } 978 979 if (ic->ic_opmode == IEEE80211_M_STA) { 980 /* fake a join to init the tx rate */ 981 wpi_newassoc(ni, 1); 982 } 983 984 /* start periodic calibration timer */ 985 sc->calib_cnt = 0; 986 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 987 988 /* link LED always on while associated */ 989 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 990 break; 991 992 case IEEE80211_S_INIT: 993 sc->is_scanning = false; 994 break; 995 } 996 997 return sc->sc_newstate(ic, nstate, arg); 998 } 999 1000 /* 1001 * XXX: Hack to set the current channel to the value advertised in beacons or 1002 * probe responses. Only used during AP detection. 1003 * XXX: Duplicated from if_iwi.c 1004 */ 1005 static void 1006 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 1007 { 1008 struct ieee80211_frame *wh; 1009 uint8_t subtype; 1010 uint8_t *frm, *efrm; 1011 1012 wh = mtod(m, struct ieee80211_frame *); 1013 1014 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1015 return; 1016 1017 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1018 1019 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1020 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1021 return; 1022 1023 frm = (uint8_t *)(wh + 1); 1024 efrm = mtod(m, uint8_t *) + m->m_len; 1025 1026 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1027 while (frm < efrm) { 1028 if (*frm == IEEE80211_ELEMID_DSPARMS) 1029 #if IEEE80211_CHAN_MAX < 255 1030 if (frm[2] <= IEEE80211_CHAN_MAX) 1031 #endif 1032 ic->ic_curchan = &ic->ic_channels[frm[2]]; 1033 1034 frm += frm[1] + 2; 1035 } 1036 } 1037 1038 /* 1039 * Grab exclusive access to NIC memory. 1040 */ 1041 static void 1042 wpi_mem_lock(struct wpi_softc *sc) 1043 { 1044 uint32_t tmp; 1045 int ntries; 1046 1047 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1048 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1049 1050 /* spin until we actually get the lock */ 1051 for (ntries = 0; ntries < 1000; ntries++) { 1052 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1053 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1054 break; 1055 DELAY(10); 1056 } 1057 if (ntries == 1000) 1058 aprint_error("%s: could not lock memory\n", sc->sc_dev.dv_xname); 1059 } 1060 1061 /* 1062 * Release lock on NIC memory. 1063 */ 1064 static void 1065 wpi_mem_unlock(struct wpi_softc *sc) 1066 { 1067 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1068 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1069 } 1070 1071 static uint32_t 1072 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1073 { 1074 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1075 return WPI_READ(sc, WPI_READ_MEM_DATA); 1076 } 1077 1078 static void 1079 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1080 { 1081 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1082 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1083 } 1084 1085 static void 1086 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1087 const uint32_t *data, int wlen) 1088 { 1089 for (; wlen > 0; wlen--, data++, addr += 4) 1090 wpi_mem_write(sc, addr, *data); 1091 } 1092 1093 1094 /* 1095 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1096 * instead of using the traditional bit-bang method. 1097 */ 1098 static int 1099 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1100 { 1101 uint8_t *out = data; 1102 uint32_t val; 1103 int ntries; 1104 1105 wpi_mem_lock(sc); 1106 for (; len > 0; len -= 2, addr++) { 1107 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1108 1109 for (ntries = 0; ntries < 10; ntries++) { 1110 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1111 WPI_EEPROM_READY) 1112 break; 1113 DELAY(5); 1114 } 1115 if (ntries == 10) { 1116 aprint_error("%s: could not read EEPROM\n", 1117 sc->sc_dev.dv_xname); 1118 return ETIMEDOUT; 1119 } 1120 *out++ = val >> 16; 1121 if (len > 1) 1122 *out++ = val >> 24; 1123 } 1124 wpi_mem_unlock(sc); 1125 1126 return 0; 1127 } 1128 1129 /* 1130 * The firmware boot code is small and is intended to be copied directly into 1131 * the NIC internal memory. 1132 */ 1133 int 1134 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1135 { 1136 int ntries; 1137 1138 size /= sizeof (uint32_t); 1139 1140 wpi_mem_lock(sc); 1141 1142 /* copy microcode image into NIC memory */ 1143 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1144 (const uint32_t *)ucode, size); 1145 1146 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1147 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1148 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1149 1150 /* run microcode */ 1151 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1152 1153 /* wait for transfer to complete */ 1154 for (ntries = 0; ntries < 1000; ntries++) { 1155 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1156 break; 1157 DELAY(10); 1158 } 1159 if (ntries == 1000) { 1160 wpi_mem_unlock(sc); 1161 printf("%s: could not load boot firmware\n", 1162 sc->sc_dev.dv_xname); 1163 return ETIMEDOUT; 1164 } 1165 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1166 1167 wpi_mem_unlock(sc); 1168 1169 return 0; 1170 } 1171 1172 static int 1173 wpi_load_firmware(struct wpi_softc *sc) 1174 { 1175 struct wpi_dma_info *dma = &sc->fw_dma; 1176 struct wpi_firmware_hdr hdr; 1177 const uint8_t *init_text, *init_data, *main_text, *main_data; 1178 const uint8_t *boot_text; 1179 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1180 uint32_t boot_textsz; 1181 firmware_handle_t fw; 1182 u_char *dfw; 1183 size_t size; 1184 int error; 1185 1186 /* load firmware image from disk */ 1187 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1188 aprint_error("%s: could not read firmware file\n", 1189 sc->sc_dev.dv_xname); 1190 goto fail1; 1191 } 1192 1193 size = firmware_get_size(fw); 1194 1195 /* extract firmware header information */ 1196 if (size < sizeof (struct wpi_firmware_hdr)) { 1197 aprint_error("%s: truncated firmware header: %zu bytes\n", 1198 sc->sc_dev.dv_xname, size); 1199 error = EINVAL; 1200 goto fail2; 1201 } 1202 1203 if ((error = firmware_read(fw, 0, &hdr, 1204 sizeof (struct wpi_firmware_hdr))) != 0) { 1205 aprint_error("%s: can't get firmware header\n", 1206 sc->sc_dev.dv_xname); 1207 goto fail2; 1208 } 1209 1210 main_textsz = le32toh(hdr.main_textsz); 1211 main_datasz = le32toh(hdr.main_datasz); 1212 init_textsz = le32toh(hdr.init_textsz); 1213 init_datasz = le32toh(hdr.init_datasz); 1214 boot_textsz = le32toh(hdr.boot_textsz); 1215 1216 /* sanity-check firmware segments sizes */ 1217 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1218 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1219 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1220 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1221 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1222 (boot_textsz & 3) != 0) { 1223 printf("%s: invalid firmware header\n", sc->sc_dev.dv_xname); 1224 error = EINVAL; 1225 goto fail2; 1226 } 1227 1228 /* check that all firmware segments are present */ 1229 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1230 main_datasz + init_textsz + init_datasz + boot_textsz) { 1231 aprint_error("%s: firmware file too short: %zu bytes\n", 1232 sc->sc_dev.dv_xname, size); 1233 error = EINVAL; 1234 goto fail2; 1235 } 1236 1237 dfw = firmware_malloc(size); 1238 if (dfw == NULL) { 1239 aprint_error("%s: not enough memory to stock firmware\n", 1240 sc->sc_dev.dv_xname); 1241 error = ENOMEM; 1242 goto fail2; 1243 } 1244 1245 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1246 aprint_error("%s: can't get firmware\n", 1247 sc->sc_dev.dv_xname); 1248 goto fail2; 1249 } 1250 1251 /* get pointers to firmware segments */ 1252 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1253 main_data = main_text + main_textsz; 1254 init_text = main_data + main_datasz; 1255 init_data = init_text + init_textsz; 1256 boot_text = init_data + init_datasz; 1257 1258 /* copy initialization images into pre-allocated DMA-safe memory */ 1259 memcpy(dma->vaddr, init_data, init_datasz); 1260 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1261 1262 /* tell adapter where to find initialization images */ 1263 wpi_mem_lock(sc); 1264 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1265 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1266 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1267 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1268 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1269 wpi_mem_unlock(sc); 1270 1271 /* load firmware boot code */ 1272 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1273 printf("%s: could not load boot firmware\n", 1274 sc->sc_dev.dv_xname); 1275 goto fail3; 1276 } 1277 1278 /* now press "execute" ;-) */ 1279 WPI_WRITE(sc, WPI_RESET, 0); 1280 1281 /* ..and wait at most one second for adapter to initialize */ 1282 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1283 /* this isn't what was supposed to happen.. */ 1284 aprint_error("%s: timeout waiting for adapter to initialize\n", 1285 sc->sc_dev.dv_xname); 1286 } 1287 1288 /* copy runtime images into pre-allocated DMA-safe memory */ 1289 memcpy(dma->vaddr, main_data, main_datasz); 1290 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1291 1292 /* tell adapter where to find runtime images */ 1293 wpi_mem_lock(sc); 1294 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1295 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1296 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1297 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1298 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1299 wpi_mem_unlock(sc); 1300 1301 /* wait at most one second for second alive notification */ 1302 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1303 /* this isn't what was supposed to happen.. */ 1304 printf("%s: timeout waiting for adapter to initialize\n", 1305 sc->sc_dev.dv_xname); 1306 } 1307 1308 1309 fail3: firmware_free(dfw,size); 1310 fail2: firmware_close(fw); 1311 fail1: return error; 1312 } 1313 1314 static void 1315 wpi_calib_timeout(void *arg) 1316 { 1317 struct wpi_softc *sc = arg; 1318 struct ieee80211com *ic = &sc->sc_ic; 1319 int temp, s; 1320 1321 /* automatic rate control triggered every 500ms */ 1322 if (ic->ic_fixed_rate == -1) { 1323 s = splnet(); 1324 if (ic->ic_opmode == IEEE80211_M_STA) 1325 wpi_iter_func(sc, ic->ic_bss); 1326 else 1327 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1328 splx(s); 1329 } 1330 1331 /* update sensor data */ 1332 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1333 1334 /* automatic power calibration every 60s */ 1335 if (++sc->calib_cnt >= 120) { 1336 wpi_power_calibration(sc, temp); 1337 sc->calib_cnt = 0; 1338 } 1339 1340 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 1341 } 1342 1343 static void 1344 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1345 { 1346 struct wpi_softc *sc = arg; 1347 struct wpi_node *wn = (struct wpi_node *)ni; 1348 1349 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1350 } 1351 1352 /* 1353 * This function is called periodically (every 60 seconds) to adjust output 1354 * power to temperature changes. 1355 */ 1356 void 1357 wpi_power_calibration(struct wpi_softc *sc, int temp) 1358 { 1359 /* sanity-check read value */ 1360 if (temp < -260 || temp > 25) { 1361 /* this can't be correct, ignore */ 1362 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1363 return; 1364 } 1365 1366 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1367 1368 /* adjust Tx power if need be */ 1369 if (abs(temp - sc->temp) <= 6) 1370 return; 1371 1372 sc->temp = temp; 1373 1374 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1375 /* just warn, too bad for the automatic calibration... */ 1376 aprint_error("%s: could not adjust Tx power\n", 1377 sc->sc_dev.dv_xname); 1378 } 1379 } 1380 1381 static void 1382 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1383 struct wpi_rx_data *data) 1384 { 1385 struct ieee80211com *ic = &sc->sc_ic; 1386 struct ifnet *ifp = ic->ic_ifp; 1387 struct wpi_rx_ring *ring = &sc->rxq; 1388 struct wpi_rx_stat *stat; 1389 struct wpi_rx_head *head; 1390 struct wpi_rx_tail *tail; 1391 struct wpi_rbuf *rbuf; 1392 struct ieee80211_frame *wh; 1393 struct ieee80211_node *ni; 1394 struct mbuf *m, *mnew; 1395 int data_off ; 1396 1397 stat = (struct wpi_rx_stat *)(desc + 1); 1398 1399 if (stat->len > WPI_STAT_MAXLEN) { 1400 aprint_error("%s: invalid rx statistic header\n", 1401 sc->sc_dev.dv_xname); 1402 ifp->if_ierrors++; 1403 return; 1404 } 1405 1406 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1407 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1408 1409 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1410 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1411 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1412 le64toh(tail->tstamp))); 1413 1414 /* 1415 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1416 * to radiotap in monitor mode). 1417 */ 1418 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1419 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1420 ifp->if_ierrors++; 1421 return; 1422 } 1423 1424 /* Compute where are the useful datas */ 1425 data_off = (char*)(head + 1) - mtod(data->m, char*); 1426 1427 /* 1428 * If the number of free entry is too low 1429 * just dup the data->m socket and reuse the same rbuf entry 1430 */ 1431 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1432 1433 /* Prepare the mbuf for the m_dup */ 1434 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1435 data->m->m_data = (char*) data->m->m_data + data_off; 1436 1437 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1438 1439 /* Restore the m_data pointer for future use */ 1440 data->m->m_data = (char*) data->m->m_data - data_off; 1441 1442 if (m == NULL) { 1443 ifp->if_ierrors++; 1444 return; 1445 } 1446 } else { 1447 1448 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1449 if (mnew == NULL) { 1450 ifp->if_ierrors++; 1451 return; 1452 } 1453 1454 rbuf = wpi_alloc_rbuf(sc); 1455 KASSERT(rbuf != NULL); 1456 1457 /* attach Rx buffer to mbuf */ 1458 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1459 rbuf); 1460 mnew->m_flags |= M_EXT_RW; 1461 1462 m = data->m; 1463 data->m = mnew; 1464 1465 /* update Rx descriptor */ 1466 ring->desc[ring->cur] = htole32(rbuf->paddr); 1467 1468 m->m_data = (char*)m->m_data + data_off; 1469 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1470 } 1471 1472 /* finalize mbuf */ 1473 m->m_pkthdr.rcvif = ifp; 1474 1475 if (ic->ic_state == IEEE80211_S_SCAN) 1476 wpi_fix_channel(ic, m); 1477 1478 #if NBPFILTER > 0 1479 if (sc->sc_drvbpf != NULL) { 1480 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1481 1482 tap->wr_flags = 0; 1483 tap->wr_chan_freq = 1484 htole16(ic->ic_channels[head->chan].ic_freq); 1485 tap->wr_chan_flags = 1486 htole16(ic->ic_channels[head->chan].ic_flags); 1487 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1488 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1489 tap->wr_tsft = tail->tstamp; 1490 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1491 switch (head->rate) { 1492 /* CCK rates */ 1493 case 10: tap->wr_rate = 2; break; 1494 case 20: tap->wr_rate = 4; break; 1495 case 55: tap->wr_rate = 11; break; 1496 case 110: tap->wr_rate = 22; break; 1497 /* OFDM rates */ 1498 case 0xd: tap->wr_rate = 12; break; 1499 case 0xf: tap->wr_rate = 18; break; 1500 case 0x5: tap->wr_rate = 24; break; 1501 case 0x7: tap->wr_rate = 36; break; 1502 case 0x9: tap->wr_rate = 48; break; 1503 case 0xb: tap->wr_rate = 72; break; 1504 case 0x1: tap->wr_rate = 96; break; 1505 case 0x3: tap->wr_rate = 108; break; 1506 /* unknown rate: should not happen */ 1507 default: tap->wr_rate = 0; 1508 } 1509 if (le16toh(head->flags) & 0x4) 1510 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1511 1512 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1513 } 1514 #endif 1515 1516 /* grab a reference to the source node */ 1517 wh = mtod(m, struct ieee80211_frame *); 1518 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1519 1520 /* send the frame to the 802.11 layer */ 1521 ieee80211_input(ic, m, ni, stat->rssi, 0); 1522 1523 /* release node reference */ 1524 ieee80211_free_node(ni); 1525 } 1526 1527 static void 1528 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1529 { 1530 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1531 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1532 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1533 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1534 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1535 1536 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1537 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1538 stat->nkill, stat->rate, le32toh(stat->duration), 1539 le32toh(stat->status))); 1540 1541 /* 1542 * Update rate control statistics for the node. 1543 * XXX we should not count mgmt frames since they're always sent at 1544 * the lowest available bit-rate. 1545 */ 1546 wn->amn.amn_txcnt++; 1547 if (stat->ntries > 0) { 1548 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1549 wn->amn.amn_retrycnt++; 1550 } 1551 1552 if ((le32toh(stat->status) & 0xff) != 1) 1553 ifp->if_oerrors++; 1554 else 1555 ifp->if_opackets++; 1556 1557 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1558 m_freem(txdata->m); 1559 txdata->m = NULL; 1560 ieee80211_free_node(txdata->ni); 1561 txdata->ni = NULL; 1562 1563 ring->queued--; 1564 1565 sc->sc_tx_timer = 0; 1566 ifp->if_flags &= ~IFF_OACTIVE; 1567 wpi_start(ifp); 1568 } 1569 1570 static void 1571 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1572 { 1573 struct wpi_tx_ring *ring = &sc->cmdq; 1574 struct wpi_tx_data *data; 1575 1576 if ((desc->qid & 7) != 4) 1577 return; /* not a command ack */ 1578 1579 data = &ring->data[desc->idx]; 1580 1581 /* if the command was mapped in a mbuf, free it */ 1582 if (data->m != NULL) { 1583 bus_dmamap_unload(sc->sc_dmat, data->map); 1584 m_freem(data->m); 1585 data->m = NULL; 1586 } 1587 1588 wakeup(&ring->cmd[desc->idx]); 1589 } 1590 1591 static void 1592 wpi_notif_intr(struct wpi_softc *sc) 1593 { 1594 struct ieee80211com *ic = &sc->sc_ic; 1595 struct ifnet *ifp = ic->ic_ifp; 1596 struct wpi_rx_desc *desc; 1597 struct wpi_rx_data *data; 1598 uint32_t hw; 1599 1600 hw = le32toh(sc->shared->next); 1601 while (sc->rxq.cur != hw) { 1602 data = &sc->rxq.data[sc->rxq.cur]; 1603 1604 desc = mtod(data->m, struct wpi_rx_desc *); 1605 1606 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1607 "len=%d\n", desc->qid, desc->idx, desc->flags, 1608 desc->type, le32toh(desc->len))); 1609 1610 if (!(desc->qid & 0x80)) /* reply to a command */ 1611 wpi_cmd_intr(sc, desc); 1612 1613 switch (desc->type) { 1614 case WPI_RX_DONE: 1615 /* a 802.11 frame was received */ 1616 wpi_rx_intr(sc, desc, data); 1617 break; 1618 1619 case WPI_TX_DONE: 1620 /* a 802.11 frame has been transmitted */ 1621 wpi_tx_intr(sc, desc); 1622 break; 1623 1624 case WPI_UC_READY: 1625 { 1626 struct wpi_ucode_info *uc = 1627 (struct wpi_ucode_info *)(desc + 1); 1628 1629 /* the microcontroller is ready */ 1630 DPRINTF(("microcode alive notification version %x " 1631 "alive %x\n", le32toh(uc->version), 1632 le32toh(uc->valid))); 1633 1634 if (le32toh(uc->valid) != 1) { 1635 aprint_error("%s: microcontroller " 1636 "initialization failed\n", 1637 sc->sc_dev.dv_xname); 1638 } 1639 break; 1640 } 1641 case WPI_STATE_CHANGED: 1642 { 1643 uint32_t *status = (uint32_t *)(desc + 1); 1644 1645 /* enabled/disabled notification */ 1646 DPRINTF(("state changed to %x\n", le32toh(*status))); 1647 1648 if (le32toh(*status) & 1) { 1649 /* the radio button has to be pushed */ 1650 aprint_error("%s: Radio transmitter is off\n", 1651 sc->sc_dev.dv_xname); 1652 /* turn the interface down */ 1653 ifp->if_flags &= ~IFF_UP; 1654 wpi_stop(ifp, 1); 1655 return; /* no further processing */ 1656 } 1657 break; 1658 } 1659 case WPI_START_SCAN: 1660 { 1661 struct wpi_start_scan *scan = 1662 (struct wpi_start_scan *)(desc + 1); 1663 1664 DPRINTFN(2, ("scanning channel %d status %x\n", 1665 scan->chan, le32toh(scan->status))); 1666 1667 /* fix current channel */ 1668 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1669 break; 1670 } 1671 case WPI_STOP_SCAN: 1672 { 1673 struct wpi_stop_scan *scan = 1674 (struct wpi_stop_scan *)(desc + 1); 1675 1676 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1677 scan->nchan, scan->status, scan->chan)); 1678 1679 if (scan->status == 1 && scan->chan <= 14) { 1680 /* 1681 * We just finished scanning 802.11g channels, 1682 * start scanning 802.11a ones. 1683 */ 1684 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1685 break; 1686 } 1687 sc->is_scanning = false; 1688 ieee80211_end_scan(ic); 1689 break; 1690 } 1691 } 1692 1693 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1694 } 1695 1696 /* tell the firmware what we have processed */ 1697 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1698 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1699 } 1700 1701 static int 1702 wpi_intr(void *arg) 1703 { 1704 struct wpi_softc *sc = arg; 1705 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1706 uint32_t r; 1707 1708 r = WPI_READ(sc, WPI_INTR); 1709 if (r == 0 || r == 0xffffffff) 1710 return 0; /* not for us */ 1711 1712 DPRINTFN(5, ("interrupt reg %x\n", r)); 1713 1714 /* disable interrupts */ 1715 WPI_WRITE(sc, WPI_MASK, 0); 1716 /* ack interrupts */ 1717 WPI_WRITE(sc, WPI_INTR, r); 1718 1719 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1720 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1721 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1722 wpi_stop(sc->sc_ic.ic_ifp, 1); 1723 return 1; 1724 } 1725 1726 if (r & WPI_RX_INTR) 1727 wpi_notif_intr(sc); 1728 1729 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1730 wakeup(sc); 1731 1732 /* re-enable interrupts */ 1733 if (ifp->if_flags & IFF_UP) 1734 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1735 1736 return 1; 1737 } 1738 1739 static uint8_t 1740 wpi_plcp_signal(int rate) 1741 { 1742 switch (rate) { 1743 /* CCK rates (returned values are device-dependent) */ 1744 case 2: return 10; 1745 case 4: return 20; 1746 case 11: return 55; 1747 case 22: return 110; 1748 1749 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1750 /* R1-R4, (u)ral is R4-R1 */ 1751 case 12: return 0xd; 1752 case 18: return 0xf; 1753 case 24: return 0x5; 1754 case 36: return 0x7; 1755 case 48: return 0x9; 1756 case 72: return 0xb; 1757 case 96: return 0x1; 1758 case 108: return 0x3; 1759 1760 /* unsupported rates (should not get there) */ 1761 default: return 0; 1762 } 1763 } 1764 1765 /* quickly determine if a given rate is CCK or OFDM */ 1766 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1767 1768 static int 1769 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1770 int ac) 1771 { 1772 struct ieee80211com *ic = &sc->sc_ic; 1773 struct wpi_tx_ring *ring = &sc->txq[ac]; 1774 struct wpi_tx_desc *desc; 1775 struct wpi_tx_data *data; 1776 struct wpi_tx_cmd *cmd; 1777 struct wpi_cmd_data *tx; 1778 struct ieee80211_frame *wh; 1779 struct ieee80211_key *k; 1780 const struct chanAccParams *cap; 1781 struct mbuf *mnew; 1782 int i, error, rate, hdrlen, noack = 0; 1783 1784 desc = &ring->desc[ring->cur]; 1785 data = &ring->data[ring->cur]; 1786 1787 wh = mtod(m0, struct ieee80211_frame *); 1788 1789 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1790 hdrlen = sizeof (struct ieee80211_qosframe); 1791 cap = &ic->ic_wme.wme_chanParams; 1792 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1793 } else 1794 hdrlen = sizeof (struct ieee80211_frame); 1795 1796 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1797 k = ieee80211_crypto_encap(ic, ni, m0); 1798 if (k == NULL) { 1799 m_freem(m0); 1800 return ENOBUFS; 1801 } 1802 1803 /* packet header may have moved, reset our local pointer */ 1804 wh = mtod(m0, struct ieee80211_frame *); 1805 } 1806 1807 /* pickup a rate */ 1808 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1809 IEEE80211_FC0_TYPE_MGT) { 1810 /* mgmt frames are sent at the lowest available bit-rate */ 1811 rate = ni->ni_rates.rs_rates[0]; 1812 } else { 1813 if (ic->ic_fixed_rate != -1) { 1814 rate = ic->ic_sup_rates[ic->ic_curmode]. 1815 rs_rates[ic->ic_fixed_rate]; 1816 } else 1817 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1818 } 1819 rate &= IEEE80211_RATE_VAL; 1820 1821 1822 #if NBPFILTER > 0 1823 if (sc->sc_drvbpf != NULL) { 1824 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1825 1826 tap->wt_flags = 0; 1827 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1828 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1829 tap->wt_rate = rate; 1830 tap->wt_hwqueue = ac; 1831 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1832 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1833 1834 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1835 } 1836 #endif 1837 1838 cmd = &ring->cmd[ring->cur]; 1839 cmd->code = WPI_CMD_TX_DATA; 1840 cmd->flags = 0; 1841 cmd->qid = ring->qid; 1842 cmd->idx = ring->cur; 1843 1844 tx = (struct wpi_cmd_data *)cmd->data; 1845 tx->flags = 0; 1846 1847 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1848 tx->flags |= htole32(WPI_TX_NEED_ACK); 1849 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1850 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1851 1852 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1853 1854 /* retrieve destination node's id */ 1855 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1856 WPI_ID_BSS; 1857 1858 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1859 IEEE80211_FC0_TYPE_MGT) { 1860 /* tell h/w to set timestamp in probe responses */ 1861 if ((wh->i_fc[0] & 1862 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1863 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1864 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1865 1866 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1867 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1868 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1869 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1870 tx->timeout = htole16(3); 1871 else 1872 tx->timeout = htole16(2); 1873 } else 1874 tx->timeout = htole16(0); 1875 1876 tx->rate = wpi_plcp_signal(rate); 1877 1878 /* be very persistant at sending frames out */ 1879 tx->rts_ntries = 7; 1880 tx->data_ntries = 15; 1881 1882 tx->ofdm_mask = 0xff; 1883 tx->cck_mask = 0xf; 1884 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1885 1886 tx->len = htole16(m0->m_pkthdr.len); 1887 1888 /* save and trim IEEE802.11 header */ 1889 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1890 m_adj(m0, hdrlen); 1891 1892 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1893 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1894 if (error != 0 && error != EFBIG) { 1895 aprint_error("%s: could not map mbuf (error %d)\n", 1896 sc->sc_dev.dv_xname, error); 1897 m_freem(m0); 1898 return error; 1899 } 1900 if (error != 0) { 1901 /* too many fragments, linearize */ 1902 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1903 if (mnew == NULL) { 1904 m_freem(m0); 1905 return ENOMEM; 1906 } 1907 1908 M_COPY_PKTHDR(mnew, m0); 1909 if (m0->m_pkthdr.len > MHLEN) { 1910 MCLGET(mnew, M_DONTWAIT); 1911 if (!(mnew->m_flags & M_EXT)) { 1912 m_freem(m0); 1913 m_freem(mnew); 1914 return ENOMEM; 1915 } 1916 } 1917 1918 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, caddr_t)); 1919 m_freem(m0); 1920 mnew->m_len = mnew->m_pkthdr.len; 1921 m0 = mnew; 1922 1923 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1924 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1925 if (error != 0) { 1926 aprint_error("%s: could not map mbuf (error %d)\n", 1927 sc->sc_dev.dv_xname, error); 1928 m_freem(m0); 1929 return error; 1930 } 1931 } 1932 1933 data->m = m0; 1934 data->ni = ni; 1935 1936 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1937 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1938 1939 /* first scatter/gather segment is used by the tx data command */ 1940 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1941 (1 + data->map->dm_nsegs) << 24); 1942 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1943 ring->cur * sizeof (struct wpi_tx_cmd)); 1944 /*XXX The next line might be wrong. I don't use hdrlen*/ 1945 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1946 1947 for (i = 1; i <= data->map->dm_nsegs; i++) { 1948 desc->segs[i].addr = 1949 htole32(data->map->dm_segs[i - 1].ds_addr); 1950 desc->segs[i].len = 1951 htole32(data->map->dm_segs[i - 1].ds_len); 1952 } 1953 1954 ring->queued++; 1955 1956 /* kick ring */ 1957 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1958 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1959 1960 return 0; 1961 } 1962 1963 static void 1964 wpi_start(struct ifnet *ifp) 1965 { 1966 struct wpi_softc *sc = ifp->if_softc; 1967 struct ieee80211com *ic = &sc->sc_ic; 1968 struct ieee80211_node *ni; 1969 struct ether_header *eh; 1970 struct mbuf *m0; 1971 int ac; 1972 1973 /* 1974 * net80211 may still try to send management frames even if the 1975 * IFF_RUNNING flag is not set... 1976 */ 1977 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1978 return; 1979 1980 for (;;) { 1981 IF_POLL(&ic->ic_mgtq, m0); 1982 if (m0 != NULL) { 1983 IF_DEQUEUE(&ic->ic_mgtq, m0); 1984 1985 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1986 m0->m_pkthdr.rcvif = NULL; 1987 1988 /* management frames go into ring 0 */ 1989 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1990 ifp->if_oerrors++; 1991 continue; 1992 } 1993 #if NBPFILTER > 0 1994 if (ic->ic_rawbpf != NULL) 1995 bpf_mtap(ic->ic_rawbpf, m0); 1996 #endif 1997 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1998 ifp->if_oerrors++; 1999 break; 2000 } 2001 } else { 2002 if (ic->ic_state != IEEE80211_S_RUN) 2003 break; 2004 IFQ_POLL(&ifp->if_snd, m0); 2005 if (m0 == NULL) 2006 break; 2007 2008 if (m0->m_len < sizeof (*eh) && 2009 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 2010 ifp->if_oerrors++; 2011 continue; 2012 } 2013 eh = mtod(m0, struct ether_header *); 2014 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2015 if (ni == NULL) { 2016 m_freem(m0); 2017 ifp->if_oerrors++; 2018 continue; 2019 } 2020 2021 /* classify mbuf so we can find which tx ring to use */ 2022 if (ieee80211_classify(ic, m0, ni) != 0) { 2023 m_freem(m0); 2024 ieee80211_free_node(ni); 2025 ifp->if_oerrors++; 2026 continue; 2027 } 2028 2029 /* no QoS encapsulation for EAPOL frames */ 2030 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2031 M_WME_GETAC(m0) : WME_AC_BE; 2032 2033 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2034 /* there is no place left in this ring */ 2035 ifp->if_flags |= IFF_OACTIVE; 2036 break; 2037 } 2038 IFQ_DEQUEUE(&ifp->if_snd, m0); 2039 #if NBPFILTER > 0 2040 if (ifp->if_bpf != NULL) 2041 bpf_mtap(ifp->if_bpf, m0); 2042 #endif 2043 m0 = ieee80211_encap(ic, m0, ni); 2044 if (m0 == NULL) { 2045 ieee80211_free_node(ni); 2046 ifp->if_oerrors++; 2047 continue; 2048 } 2049 #if NBPFILTER > 0 2050 if (ic->ic_rawbpf != NULL) 2051 bpf_mtap(ic->ic_rawbpf, m0); 2052 #endif 2053 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2054 ieee80211_free_node(ni); 2055 ifp->if_oerrors++; 2056 break; 2057 } 2058 } 2059 2060 sc->sc_tx_timer = 5; 2061 ifp->if_timer = 1; 2062 } 2063 } 2064 2065 static void 2066 wpi_watchdog(struct ifnet *ifp) 2067 { 2068 struct wpi_softc *sc = ifp->if_softc; 2069 2070 ifp->if_timer = 0; 2071 2072 if (sc->sc_tx_timer > 0) { 2073 if (--sc->sc_tx_timer == 0) { 2074 aprint_error("%s: device timeout\n", 2075 sc->sc_dev.dv_xname); 2076 ifp->if_oerrors++; 2077 ifp->if_flags &= ~IFF_UP; 2078 wpi_stop(ifp, 1); 2079 return; 2080 } 2081 ifp->if_timer = 1; 2082 } 2083 2084 ieee80211_watchdog(&sc->sc_ic); 2085 } 2086 2087 static int 2088 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2089 { 2090 #define IS_RUNNING(ifp) \ 2091 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2092 2093 struct wpi_softc *sc = ifp->if_softc; 2094 struct ieee80211com *ic = &sc->sc_ic; 2095 struct ifreq *ifr = (struct ifreq *)data; 2096 int s, error = 0; 2097 2098 s = splnet(); 2099 2100 switch (cmd) { 2101 case SIOCSIFFLAGS: 2102 if (ifp->if_flags & IFF_UP) { 2103 if (!(ifp->if_flags & IFF_RUNNING)) 2104 wpi_init(ifp); 2105 } else { 2106 if (ifp->if_flags & IFF_RUNNING) 2107 wpi_stop(ifp, 1); 2108 } 2109 break; 2110 2111 case SIOCADDMULTI: 2112 case SIOCDELMULTI: 2113 error = (cmd == SIOCADDMULTI) ? 2114 ether_addmulti(ifr, &sc->sc_ec) : 2115 ether_delmulti(ifr, &sc->sc_ec); 2116 if (error == ENETRESET) { 2117 /* setup multicast filter, etc */ 2118 error = 0; 2119 } 2120 break; 2121 2122 default: 2123 error = ieee80211_ioctl(ic, cmd, data); 2124 } 2125 2126 if (error == ENETRESET) { 2127 if (IS_RUNNING(ifp) && 2128 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2129 wpi_init(ifp); 2130 error = 0; 2131 } 2132 2133 splx(s); 2134 return error; 2135 2136 #undef IS_RUNNING 2137 } 2138 2139 /* 2140 * Extract various information from EEPROM. 2141 */ 2142 static void 2143 wpi_read_eeprom(struct wpi_softc *sc) 2144 { 2145 struct ieee80211com *ic = &sc->sc_ic; 2146 char domain[4]; 2147 int i; 2148 2149 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2150 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2151 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2152 2153 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2154 sc->type)); 2155 2156 /* read and print regulatory domain */ 2157 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2158 aprint_normal(", %.4s", domain); 2159 2160 /* read and print MAC address */ 2161 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2162 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2163 2164 /* read the list of authorized channels */ 2165 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2166 wpi_read_eeprom_channels(sc, i); 2167 2168 /* read the list of power groups */ 2169 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2170 wpi_read_eeprom_group(sc, i); 2171 } 2172 2173 static void 2174 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2175 { 2176 struct ieee80211com *ic = &sc->sc_ic; 2177 const struct wpi_chan_band *band = &wpi_bands[n]; 2178 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2179 int chan, i; 2180 2181 wpi_read_prom_data(sc, band->addr, channels, 2182 band->nchan * sizeof (struct wpi_eeprom_chan)); 2183 2184 for (i = 0; i < band->nchan; i++) { 2185 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2186 continue; 2187 2188 chan = band->chan[i]; 2189 2190 if (n == 0) { /* 2GHz band */ 2191 ic->ic_channels[chan].ic_freq = 2192 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2193 ic->ic_channels[chan].ic_flags = 2194 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2195 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2196 2197 } else { /* 5GHz band */ 2198 /* 2199 * Some 3945abg adapters support channels 7, 8, 11 2200 * and 12 in the 2GHz *and* 5GHz bands. 2201 * Because of limitations in our net80211(9) stack, 2202 * we can't support these channels in 5GHz band. 2203 */ 2204 if (chan <= 14) 2205 continue; 2206 2207 ic->ic_channels[chan].ic_freq = 2208 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2209 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2210 } 2211 2212 /* is active scan allowed on this channel? */ 2213 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2214 ic->ic_channels[chan].ic_flags |= 2215 IEEE80211_CHAN_PASSIVE; 2216 } 2217 2218 /* save maximum allowed power for this channel */ 2219 sc->maxpwr[chan] = channels[i].maxpwr; 2220 2221 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2222 chan, channels[i].flags, sc->maxpwr[chan])); 2223 } 2224 } 2225 2226 static void 2227 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2228 { 2229 struct wpi_power_group *group = &sc->groups[n]; 2230 struct wpi_eeprom_group rgroup; 2231 int i; 2232 2233 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2234 sizeof rgroup); 2235 2236 /* save power group information */ 2237 group->chan = rgroup.chan; 2238 group->maxpwr = rgroup.maxpwr; 2239 /* temperature at which the samples were taken */ 2240 group->temp = (int16_t)le16toh(rgroup.temp); 2241 2242 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2243 group->chan, group->maxpwr, group->temp)); 2244 2245 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2246 group->samples[i].index = rgroup.samples[i].index; 2247 group->samples[i].power = rgroup.samples[i].power; 2248 2249 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2250 group->samples[i].index, group->samples[i].power)); 2251 } 2252 } 2253 2254 /* 2255 * Send a command to the firmware. 2256 */ 2257 static int 2258 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2259 { 2260 struct wpi_tx_ring *ring = &sc->cmdq; 2261 struct wpi_tx_desc *desc; 2262 struct wpi_tx_cmd *cmd; 2263 2264 KASSERT(size <= sizeof cmd->data); 2265 2266 desc = &ring->desc[ring->cur]; 2267 cmd = &ring->cmd[ring->cur]; 2268 2269 cmd->code = code; 2270 cmd->flags = 0; 2271 cmd->qid = ring->qid; 2272 cmd->idx = ring->cur; 2273 memcpy(cmd->data, buf, size); 2274 2275 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2276 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2277 ring->cur * sizeof (struct wpi_tx_cmd)); 2278 desc->segs[0].len = htole32(4 + size); 2279 2280 /* kick cmd ring */ 2281 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2282 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2283 2284 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2285 } 2286 2287 static int 2288 wpi_wme_update(struct ieee80211com *ic) 2289 { 2290 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2291 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2292 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2293 const struct wmeParams *wmep; 2294 struct wpi_wme_setup wme; 2295 int ac; 2296 2297 /* don't override default WME values if WME is not actually enabled */ 2298 if (!(ic->ic_flags & IEEE80211_F_WME)) 2299 return 0; 2300 2301 wme.flags = 0; 2302 for (ac = 0; ac < WME_NUM_AC; ac++) { 2303 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2304 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2305 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2306 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2307 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2308 2309 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2310 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2311 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2312 } 2313 2314 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2315 #undef WPI_USEC 2316 #undef WPI_EXP2 2317 } 2318 2319 /* 2320 * Configure h/w multi-rate retries. 2321 */ 2322 static int 2323 wpi_mrr_setup(struct wpi_softc *sc) 2324 { 2325 struct ieee80211com *ic = &sc->sc_ic; 2326 struct wpi_mrr_setup mrr; 2327 int i, error; 2328 2329 /* CCK rates (not used with 802.11a) */ 2330 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2331 mrr.rates[i].flags = 0; 2332 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2333 /* fallback to the immediate lower CCK rate (if any) */ 2334 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2335 /* try one time at this rate before falling back to "next" */ 2336 mrr.rates[i].ntries = 1; 2337 } 2338 2339 /* OFDM rates (not used with 802.11b) */ 2340 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2341 mrr.rates[i].flags = 0; 2342 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2343 /* fallback to the immediate lower rate (if any) */ 2344 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2345 mrr.rates[i].next = (i == WPI_OFDM6) ? 2346 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2347 WPI_OFDM6 : WPI_CCK2) : 2348 i - 1; 2349 /* try one time at this rate before falling back to "next" */ 2350 mrr.rates[i].ntries = 1; 2351 } 2352 2353 /* setup MRR for control frames */ 2354 mrr.which = htole32(WPI_MRR_CTL); 2355 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2356 if (error != 0) { 2357 aprint_error("%s: could not setup MRR for control frames\n", 2358 sc->sc_dev.dv_xname); 2359 return error; 2360 } 2361 2362 /* setup MRR for data frames */ 2363 mrr.which = htole32(WPI_MRR_DATA); 2364 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2365 if (error != 0) { 2366 aprint_error("%s: could not setup MRR for data frames\n", 2367 sc->sc_dev.dv_xname); 2368 return error; 2369 } 2370 2371 return 0; 2372 } 2373 2374 static void 2375 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2376 { 2377 struct wpi_cmd_led led; 2378 2379 led.which = which; 2380 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2381 led.off = off; 2382 led.on = on; 2383 2384 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2385 } 2386 2387 static void 2388 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2389 { 2390 struct wpi_cmd_tsf tsf; 2391 uint64_t val, mod; 2392 2393 memset(&tsf, 0, sizeof tsf); 2394 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2395 tsf.bintval = htole16(ni->ni_intval); 2396 tsf.lintval = htole16(10); 2397 2398 /* compute remaining time until next beacon */ 2399 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2400 mod = le64toh(tsf.tstamp) % val; 2401 tsf.binitval = htole32((uint32_t)(val - mod)); 2402 2403 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2404 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2405 2406 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2407 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2408 } 2409 2410 /* 2411 * Update Tx power to match what is defined for channel `c'. 2412 */ 2413 static int 2414 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2415 { 2416 struct ieee80211com *ic = &sc->sc_ic; 2417 struct wpi_power_group *group; 2418 struct wpi_cmd_txpower txpower; 2419 u_int chan; 2420 int i; 2421 2422 /* get channel number */ 2423 chan = ieee80211_chan2ieee(ic, c); 2424 2425 /* find the power group to which this channel belongs */ 2426 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2427 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2428 if (chan <= group->chan) 2429 break; 2430 } else 2431 group = &sc->groups[0]; 2432 2433 memset(&txpower, 0, sizeof txpower); 2434 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2435 txpower.chan = htole16(chan); 2436 2437 /* set Tx power for all OFDM and CCK rates */ 2438 for (i = 0; i <= 11 ; i++) { 2439 /* retrieve Tx power for this channel/rate combination */ 2440 int idx = wpi_get_power_index(sc, group, c, 2441 wpi_ridx_to_rate[i]); 2442 2443 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2444 2445 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2446 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2447 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2448 } else { 2449 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2450 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2451 } 2452 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2453 wpi_ridx_to_rate[i], idx)); 2454 } 2455 2456 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2457 } 2458 2459 /* 2460 * Determine Tx power index for a given channel/rate combination. 2461 * This takes into account the regulatory information from EEPROM and the 2462 * current temperature. 2463 */ 2464 static int 2465 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2466 struct ieee80211_channel *c, int rate) 2467 { 2468 /* fixed-point arithmetic division using a n-bit fractional part */ 2469 #define fdivround(a, b, n) \ 2470 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2471 2472 /* linear interpolation */ 2473 #define interpolate(x, x1, y1, x2, y2, n) \ 2474 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2475 2476 struct ieee80211com *ic = &sc->sc_ic; 2477 struct wpi_power_sample *sample; 2478 int pwr, idx; 2479 u_int chan; 2480 2481 /* get channel number */ 2482 chan = ieee80211_chan2ieee(ic, c); 2483 2484 /* default power is group's maximum power - 3dB */ 2485 pwr = group->maxpwr / 2; 2486 2487 /* decrease power for highest OFDM rates to reduce distortion */ 2488 switch (rate) { 2489 case 72: /* 36Mb/s */ 2490 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2491 break; 2492 case 96: /* 48Mb/s */ 2493 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2494 break; 2495 case 108: /* 54Mb/s */ 2496 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2497 break; 2498 } 2499 2500 /* never exceed channel's maximum allowed Tx power */ 2501 pwr = min(pwr, sc->maxpwr[chan]); 2502 2503 /* retrieve power index into gain tables from samples */ 2504 for (sample = group->samples; sample < &group->samples[3]; sample++) 2505 if (pwr > sample[1].power) 2506 break; 2507 /* fixed-point linear interpolation using a 19-bit fractional part */ 2508 idx = interpolate(pwr, sample[0].power, sample[0].index, 2509 sample[1].power, sample[1].index, 19); 2510 2511 /* 2512 * Adjust power index based on current temperature: 2513 * - if cooler than factory-calibrated: decrease output power 2514 * - if warmer than factory-calibrated: increase output power 2515 */ 2516 idx -= (sc->temp - group->temp) * 11 / 100; 2517 2518 /* decrease power for CCK rates (-5dB) */ 2519 if (!WPI_RATE_IS_OFDM(rate)) 2520 idx += 10; 2521 2522 /* keep power index in a valid range */ 2523 if (idx < 0) 2524 return 0; 2525 if (idx > WPI_MAX_PWR_INDEX) 2526 return WPI_MAX_PWR_INDEX; 2527 return idx; 2528 2529 #undef interpolate 2530 #undef fdivround 2531 } 2532 2533 /* 2534 * Build a beacon frame that the firmware will broadcast periodically in 2535 * IBSS or HostAP modes. 2536 */ 2537 static int 2538 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2539 { 2540 struct ieee80211com *ic = &sc->sc_ic; 2541 struct wpi_tx_ring *ring = &sc->cmdq; 2542 struct wpi_tx_desc *desc; 2543 struct wpi_tx_data *data; 2544 struct wpi_tx_cmd *cmd; 2545 struct wpi_cmd_beacon *bcn; 2546 struct ieee80211_beacon_offsets bo; 2547 struct mbuf *m0; 2548 int error; 2549 2550 desc = &ring->desc[ring->cur]; 2551 data = &ring->data[ring->cur]; 2552 2553 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2554 if (m0 == NULL) { 2555 aprint_error("%s: could not allocate beacon frame\n", 2556 sc->sc_dev.dv_xname); 2557 return ENOMEM; 2558 } 2559 2560 cmd = &ring->cmd[ring->cur]; 2561 cmd->code = WPI_CMD_SET_BEACON; 2562 cmd->flags = 0; 2563 cmd->qid = ring->qid; 2564 cmd->idx = ring->cur; 2565 2566 bcn = (struct wpi_cmd_beacon *)cmd->data; 2567 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2568 bcn->id = WPI_ID_BROADCAST; 2569 bcn->ofdm_mask = 0xff; 2570 bcn->cck_mask = 0x0f; 2571 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2572 bcn->len = htole16(m0->m_pkthdr.len); 2573 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2574 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2575 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2576 2577 /* save and trim IEEE802.11 header */ 2578 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2579 m_adj(m0, sizeof (struct ieee80211_frame)); 2580 2581 /* assume beacon frame is contiguous */ 2582 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2583 BUS_DMA_READ | BUS_DMA_NOWAIT); 2584 if (error) { 2585 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2586 m_freem(m0); 2587 return error; 2588 } 2589 2590 data->m = m0; 2591 2592 /* first scatter/gather segment is used by the beacon command */ 2593 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2594 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2595 ring->cur * sizeof (struct wpi_tx_cmd)); 2596 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2597 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2598 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2599 2600 /* kick cmd ring */ 2601 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2602 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2603 2604 return 0; 2605 } 2606 2607 static int 2608 wpi_auth(struct wpi_softc *sc) 2609 { 2610 struct ieee80211com *ic = &sc->sc_ic; 2611 struct ieee80211_node *ni = ic->ic_bss; 2612 struct wpi_node_info node; 2613 int error; 2614 2615 /* update adapter's configuration */ 2616 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2617 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2618 sc->config.flags = htole32(WPI_CONFIG_TSF); 2619 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2620 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2621 WPI_CONFIG_24GHZ); 2622 } 2623 switch (ic->ic_curmode) { 2624 case IEEE80211_MODE_11A: 2625 sc->config.cck_mask = 0; 2626 sc->config.ofdm_mask = 0x15; 2627 break; 2628 case IEEE80211_MODE_11B: 2629 sc->config.cck_mask = 0x03; 2630 sc->config.ofdm_mask = 0; 2631 break; 2632 default: /* assume 802.11b/g */ 2633 sc->config.cck_mask = 0x0f; 2634 sc->config.ofdm_mask = 0x15; 2635 } 2636 2637 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2638 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2639 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2640 sizeof (struct wpi_config), 1); 2641 if (error != 0) { 2642 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2643 return error; 2644 } 2645 2646 /* configuration has changed, set Tx power accordingly */ 2647 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2648 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2649 return error; 2650 } 2651 2652 /* add default node */ 2653 memset(&node, 0, sizeof node); 2654 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2655 node.id = WPI_ID_BSS; 2656 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2657 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2658 node.action = htole32(WPI_ACTION_SET_RATE); 2659 node.antenna = WPI_ANTENNA_BOTH; 2660 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2661 if (error != 0) { 2662 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2663 return error; 2664 } 2665 2666 return 0; 2667 } 2668 2669 /* 2670 * Send a scan request to the firmware. Since this command is huge, we map it 2671 * into a mbuf instead of using the pre-allocated set of commands. 2672 */ 2673 static int 2674 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2675 { 2676 struct ieee80211com *ic = &sc->sc_ic; 2677 struct wpi_tx_ring *ring = &sc->cmdq; 2678 struct wpi_tx_desc *desc; 2679 struct wpi_tx_data *data; 2680 struct wpi_tx_cmd *cmd; 2681 struct wpi_scan_hdr *hdr; 2682 struct wpi_scan_chan *chan; 2683 struct ieee80211_frame *wh; 2684 struct ieee80211_rateset *rs; 2685 struct ieee80211_channel *c; 2686 enum ieee80211_phymode mode; 2687 uint8_t *frm; 2688 int nrates, pktlen, error; 2689 2690 desc = &ring->desc[ring->cur]; 2691 data = &ring->data[ring->cur]; 2692 2693 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2694 if (data->m == NULL) { 2695 aprint_error("%s: could not allocate mbuf for scan command\n", 2696 sc->sc_dev.dv_xname); 2697 return ENOMEM; 2698 } 2699 2700 MCLGET(data->m, M_DONTWAIT); 2701 if (!(data->m->m_flags & M_EXT)) { 2702 m_freem(data->m); 2703 data->m = NULL; 2704 aprint_error("%s: could not allocate mbuf for scan command\n", 2705 sc->sc_dev.dv_xname); 2706 return ENOMEM; 2707 } 2708 2709 cmd = mtod(data->m, struct wpi_tx_cmd *); 2710 cmd->code = WPI_CMD_SCAN; 2711 cmd->flags = 0; 2712 cmd->qid = ring->qid; 2713 cmd->idx = ring->cur; 2714 2715 hdr = (struct wpi_scan_hdr *)cmd->data; 2716 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2717 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2718 hdr->id = WPI_ID_BROADCAST; 2719 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2720 2721 /* 2722 * Move to the next channel if no packets are received within 5 msecs 2723 * after sending the probe request (this helps to reduce the duration 2724 * of active scans). 2725 */ 2726 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2727 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2728 2729 if (flags & IEEE80211_CHAN_A) { 2730 hdr->crc_threshold = htole16(1); 2731 /* send probe requests at 6Mbps */ 2732 hdr->rate = wpi_plcp_signal(12); 2733 } else { 2734 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2735 /* send probe requests at 1Mbps */ 2736 hdr->rate = wpi_plcp_signal(2); 2737 } 2738 2739 /* for directed scans, firmware inserts the essid IE itself */ 2740 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2741 hdr->essid[0].len = ic->ic_des_esslen; 2742 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2743 2744 /* 2745 * Build a probe request frame. Most of the following code is a 2746 * copy & paste of what is done in net80211. 2747 */ 2748 wh = (struct ieee80211_frame *)(hdr + 1); 2749 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2750 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2751 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2752 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2753 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2754 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2755 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2756 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2757 2758 frm = (uint8_t *)(wh + 1); 2759 2760 /* add empty essid IE (firmware generates it for directed scans) */ 2761 *frm++ = IEEE80211_ELEMID_SSID; 2762 *frm++ = 0; 2763 2764 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2765 rs = &ic->ic_sup_rates[mode]; 2766 2767 /* add supported rates IE */ 2768 *frm++ = IEEE80211_ELEMID_RATES; 2769 nrates = rs->rs_nrates; 2770 if (nrates > IEEE80211_RATE_SIZE) 2771 nrates = IEEE80211_RATE_SIZE; 2772 *frm++ = nrates; 2773 memcpy(frm, rs->rs_rates, nrates); 2774 frm += nrates; 2775 2776 /* add supported xrates IE */ 2777 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2778 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2779 *frm++ = IEEE80211_ELEMID_XRATES; 2780 *frm++ = nrates; 2781 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2782 frm += nrates; 2783 } 2784 2785 /* setup length of probe request */ 2786 hdr->paylen = htole16(frm - (uint8_t *)wh); 2787 2788 chan = (struct wpi_scan_chan *)frm; 2789 for (c = &ic->ic_channels[1]; 2790 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2791 if ((c->ic_flags & flags) != flags) 2792 continue; 2793 2794 chan->chan = ieee80211_chan2ieee(ic, c); 2795 chan->flags = 0; 2796 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2797 chan->flags |= WPI_CHAN_ACTIVE; 2798 if (ic->ic_des_esslen != 0) 2799 chan->flags |= WPI_CHAN_DIRECT; 2800 } 2801 chan->dsp_gain = 0x6e; 2802 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2803 chan->rf_gain = 0x3b; 2804 chan->active = htole16(10); 2805 chan->passive = htole16(110); 2806 } else { 2807 chan->rf_gain = 0x28; 2808 chan->active = htole16(20); 2809 chan->passive = htole16(120); 2810 } 2811 hdr->nchan++; 2812 chan++; 2813 2814 frm += sizeof (struct wpi_scan_chan); 2815 } 2816 hdr->len = htole16(frm - (uint8_t *)hdr); 2817 pktlen = frm - (uint8_t *)cmd; 2818 2819 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2820 NULL, BUS_DMA_NOWAIT); 2821 if (error) { 2822 aprint_error("%s: could not map scan command\n", 2823 sc->sc_dev.dv_xname); 2824 m_freem(data->m); 2825 data->m = NULL; 2826 return error; 2827 } 2828 2829 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2830 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2831 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2832 2833 /* kick cmd ring */ 2834 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2835 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2836 2837 return 0; /* will be notified async. of failure/success */ 2838 } 2839 2840 static int 2841 wpi_config(struct wpi_softc *sc) 2842 { 2843 struct ieee80211com *ic = &sc->sc_ic; 2844 struct ifnet *ifp = ic->ic_ifp; 2845 struct wpi_power power; 2846 struct wpi_bluetooth bluetooth; 2847 struct wpi_node_info node; 2848 int error; 2849 2850 memset(&power, 0, sizeof power); 2851 power.flags = htole32(WPI_POWER_CAM | 0x8); 2852 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2853 if (error != 0) { 2854 aprint_error("%s: could not set power mode\n", 2855 sc->sc_dev.dv_xname); 2856 return error; 2857 } 2858 2859 /* configure bluetooth coexistence */ 2860 memset(&bluetooth, 0, sizeof bluetooth); 2861 bluetooth.flags = 3; 2862 bluetooth.lead = 0xaa; 2863 bluetooth.kill = 1; 2864 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2865 0); 2866 if (error != 0) { 2867 aprint_error( 2868 "%s: could not configure bluetooth coexistence\n", 2869 sc->sc_dev.dv_xname); 2870 return error; 2871 } 2872 2873 /* configure adapter */ 2874 memset(&sc->config, 0, sizeof (struct wpi_config)); 2875 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 2876 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2877 /*set default channel*/ 2878 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2879 sc->config.flags = htole32(WPI_CONFIG_TSF); 2880 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2881 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2882 WPI_CONFIG_24GHZ); 2883 } 2884 sc->config.filter = 0; 2885 switch (ic->ic_opmode) { 2886 case IEEE80211_M_STA: 2887 sc->config.mode = WPI_MODE_STA; 2888 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2889 break; 2890 case IEEE80211_M_IBSS: 2891 case IEEE80211_M_AHDEMO: 2892 sc->config.mode = WPI_MODE_IBSS; 2893 break; 2894 case IEEE80211_M_HOSTAP: 2895 sc->config.mode = WPI_MODE_HOSTAP; 2896 break; 2897 case IEEE80211_M_MONITOR: 2898 sc->config.mode = WPI_MODE_MONITOR; 2899 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2900 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2901 break; 2902 } 2903 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2904 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2905 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2906 sizeof (struct wpi_config), 0); 2907 if (error != 0) { 2908 aprint_error("%s: configure command failed\n", 2909 sc->sc_dev.dv_xname); 2910 return error; 2911 } 2912 2913 /* configuration has changed, set Tx power accordingly */ 2914 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2915 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2916 return error; 2917 } 2918 2919 /* add broadcast node */ 2920 memset(&node, 0, sizeof node); 2921 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2922 node.id = WPI_ID_BROADCAST; 2923 node.rate = wpi_plcp_signal(2); 2924 node.action = htole32(WPI_ACTION_SET_RATE); 2925 node.antenna = WPI_ANTENNA_BOTH; 2926 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2927 if (error != 0) { 2928 aprint_error("%s: could not add broadcast node\n", 2929 sc->sc_dev.dv_xname); 2930 return error; 2931 } 2932 2933 if ((error = wpi_mrr_setup(sc)) != 0) { 2934 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2935 return error; 2936 } 2937 2938 return 0; 2939 } 2940 2941 static void 2942 wpi_stop_master(struct wpi_softc *sc) 2943 { 2944 uint32_t tmp; 2945 int ntries; 2946 2947 tmp = WPI_READ(sc, WPI_RESET); 2948 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2949 2950 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2951 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2952 return; /* already asleep */ 2953 2954 for (ntries = 0; ntries < 100; ntries++) { 2955 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2956 break; 2957 DELAY(10); 2958 } 2959 if (ntries == 100) { 2960 aprint_error("%s: timeout waiting for master\n", 2961 sc->sc_dev.dv_xname); 2962 } 2963 } 2964 2965 static int 2966 wpi_power_up(struct wpi_softc *sc) 2967 { 2968 uint32_t tmp; 2969 int ntries; 2970 2971 wpi_mem_lock(sc); 2972 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2973 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2974 wpi_mem_unlock(sc); 2975 2976 for (ntries = 0; ntries < 5000; ntries++) { 2977 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2978 break; 2979 DELAY(10); 2980 } 2981 if (ntries == 5000) { 2982 aprint_error("%s: timeout waiting for NIC to power up\n", 2983 sc->sc_dev.dv_xname); 2984 return ETIMEDOUT; 2985 } 2986 return 0; 2987 } 2988 2989 static int 2990 wpi_reset(struct wpi_softc *sc) 2991 { 2992 uint32_t tmp; 2993 int ntries; 2994 2995 /* clear any pending interrupts */ 2996 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2997 2998 tmp = WPI_READ(sc, WPI_PLL_CTL); 2999 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 3000 3001 tmp = WPI_READ(sc, WPI_CHICKEN); 3002 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 3003 3004 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3005 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 3006 3007 /* wait for clock stabilization */ 3008 for (ntries = 0; ntries < 1000; ntries++) { 3009 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 3010 break; 3011 DELAY(10); 3012 } 3013 if (ntries == 1000) { 3014 aprint_error("%s: timeout waiting for clock stabilization\n", 3015 sc->sc_dev.dv_xname); 3016 return ETIMEDOUT; 3017 } 3018 3019 /* initialize EEPROM */ 3020 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3021 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3022 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 3023 return EIO; 3024 } 3025 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3026 3027 return 0; 3028 } 3029 3030 static void 3031 wpi_hw_config(struct wpi_softc *sc) 3032 { 3033 uint32_t rev, hw; 3034 3035 /* voodoo from the reference driver */ 3036 hw = WPI_READ(sc, WPI_HWCONFIG); 3037 3038 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3039 rev = PCI_REVISION(rev); 3040 if ((rev & 0xc0) == 0x40) 3041 hw |= WPI_HW_ALM_MB; 3042 else if (!(rev & 0x80)) 3043 hw |= WPI_HW_ALM_MM; 3044 3045 if (sc->cap == 0x80) 3046 hw |= WPI_HW_SKU_MRC; 3047 3048 hw &= ~WPI_HW_REV_D; 3049 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3050 hw |= WPI_HW_REV_D; 3051 3052 if (sc->type > 1) 3053 hw |= WPI_HW_TYPE_B; 3054 3055 DPRINTF(("setting h/w config %x\n", hw)); 3056 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3057 } 3058 3059 static int 3060 wpi_init(struct ifnet *ifp) 3061 { 3062 struct wpi_softc *sc = ifp->if_softc; 3063 struct ieee80211com *ic = &sc->sc_ic; 3064 uint32_t tmp; 3065 int qid, ntries, error; 3066 3067 wpi_stop(ifp,1); 3068 (void)wpi_reset(sc); 3069 3070 wpi_mem_lock(sc); 3071 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3072 DELAY(20); 3073 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3074 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3075 wpi_mem_unlock(sc); 3076 3077 (void)wpi_power_up(sc); 3078 wpi_hw_config(sc); 3079 3080 /* init Rx ring */ 3081 wpi_mem_lock(sc); 3082 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3083 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3084 offsetof(struct wpi_shared, next)); 3085 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3086 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3087 wpi_mem_unlock(sc); 3088 3089 /* init Tx rings */ 3090 wpi_mem_lock(sc); 3091 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3092 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3093 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3094 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3095 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3096 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3097 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3098 3099 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3100 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3101 3102 for (qid = 0; qid < 6; qid++) { 3103 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3104 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3105 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3106 } 3107 wpi_mem_unlock(sc); 3108 3109 /* clear "radio off" and "disable command" bits (reversed logic) */ 3110 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3111 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3112 3113 /* clear any pending interrupts */ 3114 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3115 /* enable interrupts */ 3116 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3117 3118 /* not sure why/if this is necessary... */ 3119 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3120 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3121 3122 if ((error = wpi_load_firmware(sc)) != 0) { 3123 aprint_error("%s: could not load firmware\n", sc->sc_dev.dv_xname); 3124 goto fail1; 3125 } 3126 3127 /* wait for thermal sensors to calibrate */ 3128 for (ntries = 0; ntries < 1000; ntries++) { 3129 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3130 break; 3131 DELAY(10); 3132 } 3133 if (ntries == 1000) { 3134 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 3135 sc->sc_dev.dv_xname); 3136 error = ETIMEDOUT; 3137 goto fail1; 3138 } 3139 3140 DPRINTF(("temperature %d\n", sc->temp)); 3141 3142 if ((error = wpi_config(sc)) != 0) { 3143 aprint_error("%s: could not configure device\n", 3144 sc->sc_dev.dv_xname); 3145 goto fail1; 3146 } 3147 3148 ifp->if_flags &= ~IFF_OACTIVE; 3149 ifp->if_flags |= IFF_RUNNING; 3150 3151 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3152 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3153 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3154 } 3155 else 3156 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3157 3158 return 0; 3159 3160 fail1: wpi_stop(ifp, 1); 3161 return error; 3162 } 3163 3164 3165 static void 3166 wpi_stop(struct ifnet *ifp, int disable) 3167 { 3168 struct wpi_softc *sc = ifp->if_softc; 3169 struct ieee80211com *ic = &sc->sc_ic; 3170 uint32_t tmp; 3171 int ac; 3172 3173 ifp->if_timer = sc->sc_tx_timer = 0; 3174 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3175 3176 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3177 3178 /* disable interrupts */ 3179 WPI_WRITE(sc, WPI_MASK, 0); 3180 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3181 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3182 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3183 3184 wpi_mem_lock(sc); 3185 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3186 wpi_mem_unlock(sc); 3187 3188 /* reset all Tx rings */ 3189 for (ac = 0; ac < 4; ac++) 3190 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3191 wpi_reset_tx_ring(sc, &sc->cmdq); 3192 wpi_reset_tx_ring(sc, &sc->svcq); 3193 3194 /* reset Rx ring */ 3195 wpi_reset_rx_ring(sc, &sc->rxq); 3196 3197 wpi_mem_lock(sc); 3198 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3199 wpi_mem_unlock(sc); 3200 3201 DELAY(5); 3202 3203 wpi_stop_master(sc); 3204 3205 tmp = WPI_READ(sc, WPI_RESET); 3206 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3207 } 3208
Indexes created Thu Oct 02 01:09:59 GMT 2025