if_wpi.c revision 1.17.4.8
1 /* $NetBSD: if_wpi.c,v 1.17.4.8 2007/10/26 15:46:27 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007 5 * Damien Bergamini <damien.bergamini (at) free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __KERNEL_RCSID(0, "$NetBSD: if_wpi.c,v 1.17.4.8 2007/10/26 15:46:27 joerg Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 #include "bpfilter.h" 28 29 #include <sys/param.h> 30 #include <sys/sockio.h> 31 #include <sys/sysctl.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/conf.h> 38 #include <sys/kauth.h> 39 #include <sys/callout.h> 40 41 #include <sys/bus.h> 42 #include <machine/endian.h> 43 #include <sys/intr.h> 44 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcidevs.h> 48 49 #if NBPFILTER > 0 50 #include <net/bpf.h> 51 #endif 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 68 #include <dev/firmload.h> 69 70 #include <dev/pci/if_wpireg.h> 71 #include <dev/pci/if_wpivar.h> 72 73 #ifdef WPI_DEBUG 74 #define DPRINTF(x) if (wpi_debug > 0) printf x 75 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 76 int wpi_debug = 1; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n, x) 80 #endif 81 82 /* 83 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 84 */ 85 static const struct ieee80211_rateset wpi_rateset_11a = 86 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 87 88 static const struct ieee80211_rateset wpi_rateset_11b = 89 { 4, { 2, 4, 11, 22 } }; 90 91 static const struct ieee80211_rateset wpi_rateset_11g = 92 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 93 94 static int wpi_match(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 int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 98 void **, bus_size_t, bus_size_t, int); 99 static void wpi_dma_contig_free(struct wpi_dma_info *); 100 static int wpi_alloc_shared(struct wpi_softc *); 101 static void wpi_free_shared(struct wpi_softc *); 102 static int wpi_alloc_fwmem(struct wpi_softc *); 103 static void wpi_free_fwmem(struct wpi_softc *); 104 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 105 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 106 static int wpi_alloc_rpool(struct wpi_softc *); 107 static void wpi_free_rpool(struct wpi_softc *); 108 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 109 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 110 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 111 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 112 int); 113 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 114 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 115 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 116 static void wpi_newassoc(struct ieee80211_node *, int); 117 static int wpi_media_change(struct ifnet *); 118 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 119 static void wpi_fix_channel(struct ieee80211com *, struct mbuf *); 120 static void wpi_mem_lock(struct wpi_softc *); 121 static void wpi_mem_unlock(struct wpi_softc *); 122 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 123 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 124 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 125 const uint32_t *, int); 126 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 127 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 128 static int wpi_load_firmware(struct wpi_softc *); 129 static void wpi_calib_timeout(void *); 130 static void wpi_iter_func(void *, struct ieee80211_node *); 131 static void wpi_power_calibration(struct wpi_softc *, int); 132 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 133 struct wpi_rx_data *); 134 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 135 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 136 static void wpi_notif_intr(struct wpi_softc *); 137 static int wpi_intr(void *); 138 static void wpi_read_eeprom(struct wpi_softc *); 139 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 140 static void wpi_read_eeprom_group(struct wpi_softc *, int); 141 static uint8_t wpi_plcp_signal(int); 142 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 143 struct ieee80211_node *, int); 144 static void wpi_start(struct ifnet *); 145 static void wpi_watchdog(struct ifnet *); 146 static int wpi_ioctl(struct ifnet *, u_long, void *); 147 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 148 static int wpi_wme_update(struct ieee80211com *); 149 static int wpi_mrr_setup(struct wpi_softc *); 150 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 151 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 152 static int wpi_set_txpower(struct wpi_softc *, 153 struct ieee80211_channel *, int); 154 static int wpi_get_power_index(struct wpi_softc *, 155 struct wpi_power_group *, struct ieee80211_channel *, int); 156 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 157 static int wpi_auth(struct wpi_softc *); 158 static int wpi_scan(struct wpi_softc *, uint16_t); 159 static int wpi_config(struct wpi_softc *); 160 static void wpi_stop_master(struct wpi_softc *); 161 static int wpi_power_up(struct wpi_softc *); 162 static int wpi_reset(struct wpi_softc *); 163 static void wpi_hw_config(struct wpi_softc *); 164 static int wpi_init(struct ifnet *); 165 static void wpi_stop(struct ifnet *, int); 166 167 CFATTACH_DECL(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 168 wpi_detach, NULL); 169 170 static int 171 wpi_match(struct device *parent, struct cfdata *match __unused, void *aux) 172 { 173 struct pci_attach_args *pa = aux; 174 175 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 176 return 0; 177 178 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 179 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 180 return 1; 181 182 return 0; 183 } 184 185 /* Base Address Register */ 186 #define WPI_PCI_BAR0 0x10 187 188 static void 189 wpi_attach(struct device *parent __unused, struct device *self, void *aux) 190 { 191 struct wpi_softc *sc = (struct wpi_softc *)self; 192 struct ieee80211com *ic = &sc->sc_ic; 193 struct ifnet *ifp = &sc->sc_ec.ec_if; 194 struct pci_attach_args *pa = aux; 195 const char *intrstr; 196 char devinfo[256]; 197 bus_space_tag_t memt; 198 bus_space_handle_t memh; 199 pci_intr_handle_t ih; 200 pcireg_t data; 201 int error, ac, revision; 202 pnp_status_t pnp_status; 203 204 sc->sc_pct = pa->pa_pc; 205 sc->sc_pcitag = pa->pa_tag; 206 207 callout_init(&sc->calib_to, 0); 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 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 300 aprint_error("%s: could not allocate Rx ring\n", 301 sc->sc_dev.dv_xname); 302 goto fail4; 303 } 304 305 ic->ic_ifp = ifp; 306 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 307 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 308 ic->ic_state = IEEE80211_S_INIT; 309 310 /* set device capabilities */ 311 ic->ic_caps = 312 IEEE80211_C_IBSS | /* IBSS mode support */ 313 IEEE80211_C_WPA | /* 802.11i */ 314 IEEE80211_C_MONITOR | /* monitor mode supported */ 315 IEEE80211_C_TXPMGT | /* tx power management */ 316 IEEE80211_C_SHSLOT | /* short slot time supported */ 317 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 318 IEEE80211_C_WME; /* 802.11e */ 319 320 /* read supported channels and MAC address from EEPROM */ 321 wpi_read_eeprom(sc); 322 323 /* set supported .11a, .11b, .11g rates */ 324 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 325 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 326 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 327 328 ic->ic_ibss_chan = &ic->ic_channels[0]; 329 330 ifp->if_softc = sc; 331 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 332 ifp->if_init = wpi_init; 333 ifp->if_stop = wpi_stop; 334 ifp->if_ioctl = wpi_ioctl; 335 ifp->if_start = wpi_start; 336 ifp->if_watchdog = wpi_watchdog; 337 IFQ_SET_READY(&ifp->if_snd); 338 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 339 340 if_attach(ifp); 341 ieee80211_ifattach(ic); 342 /* override default methods */ 343 ic->ic_node_alloc = wpi_node_alloc; 344 ic->ic_newassoc = wpi_newassoc; 345 ic->ic_wme.wme_update = wpi_wme_update; 346 347 /* override state transition machine */ 348 sc->sc_newstate = ic->ic_newstate; 349 ic->ic_newstate = wpi_newstate; 350 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 351 352 sc->amrr.amrr_min_success_threshold = 1; 353 sc->amrr.amrr_max_success_threshold = 15; 354 355 pnp_status = pci_net_generic_power_register(self, 356 pa->pa_pc, pa->pa_tag, ifp, NULL, NULL); 357 if (pnp_status != PNP_STATUS_SUCCESS) { 358 aprint_error("%s: couldn't establish power handler\n", 359 device_xname(self)); 360 } 361 362 #if NBPFILTER > 0 363 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 364 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 365 &sc->sc_drvbpf); 366 367 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 368 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 369 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 370 371 sc->sc_txtap_len = sizeof sc->sc_txtapu; 372 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 373 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 374 #endif 375 376 ieee80211_announce(ic); 377 378 return; 379 380 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 381 fail3: while (--ac >= 0) 382 wpi_free_tx_ring(sc, &sc->txq[ac]); 383 wpi_free_rpool(sc); 384 fail2: wpi_free_shared(sc); 385 fail1: wpi_free_fwmem(sc); 386 } 387 388 static int 389 wpi_detach(struct device* self, int flags __unused) 390 { 391 struct wpi_softc *sc = (struct wpi_softc *)self; 392 struct ifnet *ifp = sc->sc_ic.ic_ifp; 393 int ac; 394 395 wpi_stop(ifp, 1); 396 397 #if NBPFILTER > 0 398 if (ifp != NULL) 399 bpfdetach(ifp); 400 #endif 401 ieee80211_ifdetach(&sc->sc_ic); 402 if (ifp != NULL) 403 if_detach(ifp); 404 405 for (ac = 0; ac < 4; ac++) 406 wpi_free_tx_ring(sc, &sc->txq[ac]); 407 wpi_free_tx_ring(sc, &sc->cmdq); 408 wpi_free_rx_ring(sc, &sc->rxq); 409 wpi_free_rpool(sc); 410 wpi_free_shared(sc); 411 412 if (sc->sc_ih != NULL) { 413 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 414 sc->sc_ih = NULL; 415 } 416 417 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 418 419 return 0; 420 } 421 422 static int 423 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 424 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 425 { 426 int nsegs, error; 427 428 dma->tag = tag; 429 dma->size = size; 430 431 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 432 if (error != 0) 433 goto fail; 434 435 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 436 flags); 437 if (error != 0) 438 goto fail; 439 440 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 441 if (error != 0) 442 goto fail; 443 444 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 445 if (error != 0) 446 goto fail; 447 448 memset(dma->vaddr, 0, size); 449 450 dma->paddr = dma->map->dm_segs[0].ds_addr; 451 if (kvap != NULL) 452 *kvap = dma->vaddr; 453 454 return 0; 455 456 fail: wpi_dma_contig_free(dma); 457 return error; 458 } 459 460 static void 461 wpi_dma_contig_free(struct wpi_dma_info *dma) 462 { 463 if (dma->map != NULL) { 464 if (dma->vaddr != NULL) { 465 bus_dmamap_unload(dma->tag, dma->map); 466 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 467 bus_dmamem_free(dma->tag, &dma->seg, 1); 468 dma->vaddr = NULL; 469 } 470 bus_dmamap_destroy(dma->tag, dma->map); 471 dma->map = NULL; 472 } 473 } 474 475 /* 476 * Allocate a shared page between host and NIC. 477 */ 478 static int 479 wpi_alloc_shared(struct wpi_softc *sc) 480 { 481 int error; 482 /* must be aligned on a 4K-page boundary */ 483 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 484 (void **)&sc->shared, sizeof (struct wpi_shared), 485 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 486 if (error != 0) 487 aprint_error( 488 "%s: could not allocate shared area DMA memory\n", 489 sc->sc_dev.dv_xname); 490 491 return error; 492 } 493 494 static void 495 wpi_free_shared(struct wpi_softc *sc) 496 { 497 wpi_dma_contig_free(&sc->shared_dma); 498 } 499 500 /* 501 * Allocate DMA-safe memory for firmware transfer. 502 */ 503 static int 504 wpi_alloc_fwmem(struct wpi_softc *sc) 505 { 506 int error; 507 /* allocate enough contiguous space to store text and data */ 508 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 509 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 510 BUS_DMA_NOWAIT); 511 512 if (error != 0) 513 aprint_error( 514 "%s: could not allocate firmware transfer area" 515 "DMA memory\n", sc->sc_dev.dv_xname); 516 return error; 517 } 518 519 static void 520 wpi_free_fwmem(struct wpi_softc *sc) 521 { 522 wpi_dma_contig_free(&sc->fw_dma); 523 } 524 525 526 static struct wpi_rbuf * 527 wpi_alloc_rbuf(struct wpi_softc *sc) 528 { 529 struct wpi_rbuf *rbuf; 530 531 rbuf = SLIST_FIRST(&sc->rxq.freelist); 532 if (rbuf == NULL) 533 return NULL; 534 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 535 sc->rxq.nb_free_entries --; 536 537 return rbuf; 538 } 539 540 /* 541 * This is called automatically by the network stack when the mbuf to which our 542 * Rx buffer is attached is freed. 543 */ 544 static void 545 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 546 { 547 struct wpi_rbuf *rbuf = arg; 548 struct wpi_softc *sc = rbuf->sc; 549 int s; 550 551 /* put the buffer back in the free list */ 552 553 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 554 sc->rxq.nb_free_entries ++; 555 556 if (__predict_true(m != NULL)) { 557 s = splvm(); 558 pool_cache_put(&mbpool_cache, m); 559 splx(s); 560 } 561 } 562 563 static int 564 wpi_alloc_rpool(struct wpi_softc *sc) 565 { 566 struct wpi_rx_ring *ring = &sc->rxq; 567 struct wpi_rbuf *rbuf; 568 int i, error; 569 570 /* allocate a big chunk of DMA'able memory.. */ 571 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 572 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 573 if (error != 0) { 574 aprint_normal("%s: could not allocate Rx buffers DMA memory\n", 575 sc->sc_dev.dv_xname); 576 return error; 577 } 578 579 /* ..and split it into 3KB chunks */ 580 SLIST_INIT(&ring->freelist); 581 for (i = 0; i < WPI_RBUF_COUNT; i++) { 582 rbuf = &ring->rbuf[i]; 583 rbuf->sc = sc; /* backpointer for callbacks */ 584 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 585 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 586 587 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 588 } 589 590 ring->nb_free_entries = WPI_RBUF_COUNT; 591 return 0; 592 } 593 594 static void 595 wpi_free_rpool(struct wpi_softc *sc) 596 { 597 wpi_dma_contig_free(&sc->rxq.buf_dma); 598 } 599 600 static int 601 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 602 { 603 struct wpi_rx_data *data; 604 struct wpi_rbuf *rbuf; 605 int i, error; 606 607 ring->cur = 0; 608 609 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 610 (void **)&ring->desc, 611 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 612 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 613 if (error != 0) { 614 aprint_error("%s: could not allocate rx ring DMA memory\n", 615 sc->sc_dev.dv_xname); 616 goto fail; 617 } 618 619 /* 620 * Setup Rx buffers. 621 */ 622 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 623 data = &ring->data[i]; 624 625 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 626 if (data->m == NULL) { 627 aprint_error("%s: could not allocate rx mbuf\n", 628 sc->sc_dev.dv_xname); 629 error = ENOMEM; 630 goto fail; 631 } 632 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 633 m_freem(data->m); 634 data->m = NULL; 635 aprint_error("%s: could not allocate rx cluster\n", 636 sc->sc_dev.dv_xname); 637 error = ENOMEM; 638 goto fail; 639 } 640 /* attach Rx buffer to mbuf */ 641 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 642 rbuf); 643 data->m->m_flags |= M_EXT_RW; 644 645 ring->desc[i] = htole32(rbuf->paddr); 646 } 647 648 return 0; 649 650 fail: wpi_free_rx_ring(sc, ring); 651 return error; 652 } 653 654 static void 655 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 656 { 657 int ntries; 658 659 wpi_mem_lock(sc); 660 661 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 662 for (ntries = 0; ntries < 100; ntries++) { 663 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 664 break; 665 DELAY(10); 666 } 667 #ifdef WPI_DEBUG 668 if (ntries == 100 && wpi_debug > 0) 669 aprint_error("%s: timeout resetting Rx ring\n", 670 sc->sc_dev.dv_xname); 671 #endif 672 wpi_mem_unlock(sc); 673 674 ring->cur = 0; 675 } 676 677 static void 678 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 679 { 680 int i; 681 682 wpi_dma_contig_free(&ring->desc_dma); 683 684 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 685 if (ring->data[i].m != NULL) 686 m_freem(ring->data[i].m); 687 } 688 } 689 690 static int 691 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 692 int qid) 693 { 694 struct wpi_tx_data *data; 695 int i, error; 696 697 ring->qid = qid; 698 ring->count = count; 699 ring->queued = 0; 700 ring->cur = 0; 701 702 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 703 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 704 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 705 if (error != 0) { 706 aprint_error("%s: could not allocate tx ring DMA memory\n", 707 sc->sc_dev.dv_xname); 708 goto fail; 709 } 710 711 /* update shared page with ring's base address */ 712 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 713 714 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 715 (void **)&ring->cmd, 716 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 717 if (error != 0) { 718 aprint_error("%s: could not allocate tx cmd DMA memory\n", 719 sc->sc_dev.dv_xname); 720 goto fail; 721 } 722 723 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 724 M_NOWAIT); 725 if (ring->data == NULL) { 726 aprint_error("%s: could not allocate tx data slots\n", 727 sc->sc_dev.dv_xname); 728 goto fail; 729 } 730 731 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 732 733 for (i = 0; i < count; i++) { 734 data = &ring->data[i]; 735 736 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 737 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 738 &data->map); 739 if (error != 0) { 740 aprint_error("%s: could not create tx buf DMA map\n", 741 sc->sc_dev.dv_xname); 742 goto fail; 743 } 744 } 745 746 return 0; 747 748 fail: wpi_free_tx_ring(sc, ring); 749 return error; 750 } 751 752 static void 753 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 754 { 755 struct wpi_tx_data *data; 756 int i, ntries; 757 758 wpi_mem_lock(sc); 759 760 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 761 for (ntries = 0; ntries < 100; ntries++) { 762 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 763 break; 764 DELAY(10); 765 } 766 #ifdef WPI_DEBUG 767 if (ntries == 100 && wpi_debug > 0) { 768 aprint_error("%s: timeout resetting Tx ring %d\n", 769 sc->sc_dev.dv_xname, ring->qid); 770 } 771 #endif 772 wpi_mem_unlock(sc); 773 774 for (i = 0; i < ring->count; i++) { 775 data = &ring->data[i]; 776 777 if (data->m != NULL) { 778 bus_dmamap_unload(sc->sc_dmat, data->map); 779 m_freem(data->m); 780 data->m = NULL; 781 } 782 } 783 784 ring->queued = 0; 785 ring->cur = 0; 786 } 787 788 static void 789 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 790 { 791 struct wpi_tx_data *data; 792 int i; 793 794 wpi_dma_contig_free(&ring->desc_dma); 795 wpi_dma_contig_free(&ring->cmd_dma); 796 797 if (ring->data != NULL) { 798 for (i = 0; i < ring->count; i++) { 799 data = &ring->data[i]; 800 801 if (data->m != NULL) { 802 bus_dmamap_unload(sc->sc_dmat, data->map); 803 m_freem(data->m); 804 } 805 } 806 free(ring->data, M_DEVBUF); 807 } 808 } 809 810 /*ARGUSED*/ 811 static struct ieee80211_node * 812 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 813 { 814 struct wpi_node *wn; 815 816 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 817 818 if (wn != NULL) 819 memset(wn, 0, sizeof (struct wpi_node)); 820 return (struct ieee80211_node *)wn; 821 } 822 823 static void 824 wpi_newassoc(struct ieee80211_node *ni, int isnew) 825 { 826 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 827 int i; 828 829 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 830 831 /* set rate to some reasonable initial value */ 832 for (i = ni->ni_rates.rs_nrates - 1; 833 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 834 i--); 835 ni->ni_txrate = i; 836 } 837 838 static int 839 wpi_media_change(struct ifnet *ifp) 840 { 841 int error; 842 843 error = ieee80211_media_change(ifp); 844 if (error != ENETRESET) 845 return error; 846 847 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 848 wpi_init(ifp); 849 850 return 0; 851 } 852 853 static int 854 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 855 { 856 struct ifnet *ifp = ic->ic_ifp; 857 struct wpi_softc *sc = ifp->if_softc; 858 struct ieee80211_node *ni; 859 int error; 860 861 callout_stop(&sc->calib_to); 862 863 switch (nstate) { 864 case IEEE80211_S_SCAN: 865 866 if (sc->is_scanning) 867 break; 868 869 sc->is_scanning = true; 870 ieee80211_node_table_reset(&ic->ic_scan); 871 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 872 873 /* make the link LED blink while we're scanning */ 874 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 875 876 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 877 aprint_error("%s: could not initiate scan\n", 878 sc->sc_dev.dv_xname); 879 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 880 return error; 881 } 882 883 ic->ic_state = nstate; 884 return 0; 885 886 case IEEE80211_S_ASSOC: 887 if (ic->ic_state != IEEE80211_S_RUN) 888 break; 889 /* FALLTHROUGH */ 890 case IEEE80211_S_AUTH: 891 sc->config.associd = 0; 892 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 893 if ((error = wpi_auth(sc)) != 0) { 894 aprint_error("%s: could not send authentication request\n", 895 sc->sc_dev.dv_xname); 896 return error; 897 } 898 break; 899 900 case IEEE80211_S_RUN: 901 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 902 /* link LED blinks while monitoring */ 903 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 904 break; 905 } 906 907 ni = ic->ic_bss; 908 909 if (ic->ic_opmode != IEEE80211_M_STA) { 910 (void) wpi_auth(sc); /* XXX */ 911 wpi_setup_beacon(sc, ni); 912 } 913 914 wpi_enable_tsf(sc, ni); 915 916 /* update adapter's configuration */ 917 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 918 /* short preamble/slot time are negotiated when associating */ 919 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 920 WPI_CONFIG_SHSLOT); 921 if (ic->ic_flags & IEEE80211_F_SHSLOT) 922 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 923 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 924 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 925 sc->config.filter |= htole32(WPI_FILTER_BSS); 926 if (ic->ic_opmode != IEEE80211_M_STA) 927 sc->config.filter |= htole32(WPI_FILTER_BEACON); 928 929 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 930 931 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 932 sc->config.flags)); 933 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 934 sizeof (struct wpi_config), 1); 935 if (error != 0) { 936 aprint_error("%s: could not update configuration\n", 937 sc->sc_dev.dv_xname); 938 return error; 939 } 940 941 /* configuration has changed, set Tx power accordingly */ 942 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 943 aprint_error("%s: could not set Tx power\n", 944 sc->sc_dev.dv_xname); 945 return error; 946 } 947 948 if (ic->ic_opmode == IEEE80211_M_STA) { 949 /* fake a join to init the tx rate */ 950 wpi_newassoc(ni, 1); 951 } 952 953 /* start periodic calibration timer */ 954 sc->calib_cnt = 0; 955 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 956 957 /* link LED always on while associated */ 958 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 959 break; 960 961 case IEEE80211_S_INIT: 962 sc->is_scanning = false; 963 break; 964 } 965 966 return sc->sc_newstate(ic, nstate, arg); 967 } 968 969 /* 970 * XXX: Hack to set the current channel to the value advertised in beacons or 971 * probe responses. Only used during AP detection. 972 * XXX: Duplicated from if_iwi.c 973 */ 974 static void 975 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 976 { 977 struct ieee80211_frame *wh; 978 uint8_t subtype; 979 uint8_t *frm, *efrm; 980 981 wh = mtod(m, struct ieee80211_frame *); 982 983 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 984 return; 985 986 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 987 988 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 989 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 990 return; 991 992 frm = (uint8_t *)(wh + 1); 993 efrm = mtod(m, uint8_t *) + m->m_len; 994 995 frm += 12; /* skip tstamp, bintval and capinfo fields */ 996 while (frm < efrm) { 997 if (*frm == IEEE80211_ELEMID_DSPARMS) 998 #if IEEE80211_CHAN_MAX < 255 999 if (frm[2] <= IEEE80211_CHAN_MAX) 1000 #endif 1001 ic->ic_curchan = &ic->ic_channels[frm[2]]; 1002 1003 frm += frm[1] + 2; 1004 } 1005 } 1006 1007 /* 1008 * Grab exclusive access to NIC memory. 1009 */ 1010 static void 1011 wpi_mem_lock(struct wpi_softc *sc) 1012 { 1013 uint32_t tmp; 1014 int ntries; 1015 1016 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1017 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1018 1019 /* spin until we actually get the lock */ 1020 for (ntries = 0; ntries < 1000; ntries++) { 1021 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1022 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1023 break; 1024 DELAY(10); 1025 } 1026 if (ntries == 1000) 1027 aprint_error("%s: could not lock memory\n", sc->sc_dev.dv_xname); 1028 } 1029 1030 /* 1031 * Release lock on NIC memory. 1032 */ 1033 static void 1034 wpi_mem_unlock(struct wpi_softc *sc) 1035 { 1036 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1037 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1038 } 1039 1040 static uint32_t 1041 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1042 { 1043 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1044 return WPI_READ(sc, WPI_READ_MEM_DATA); 1045 } 1046 1047 static void 1048 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1049 { 1050 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1051 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1052 } 1053 1054 static void 1055 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1056 const uint32_t *data, int wlen) 1057 { 1058 for (; wlen > 0; wlen--, data++, addr += 4) 1059 wpi_mem_write(sc, addr, *data); 1060 } 1061 1062 1063 /* 1064 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1065 * instead of using the traditional bit-bang method. 1066 */ 1067 static int 1068 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1069 { 1070 uint8_t *out = data; 1071 uint32_t val; 1072 int ntries; 1073 1074 wpi_mem_lock(sc); 1075 for (; len > 0; len -= 2, addr++) { 1076 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1077 1078 for (ntries = 0; ntries < 10; ntries++) { 1079 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1080 WPI_EEPROM_READY) 1081 break; 1082 DELAY(5); 1083 } 1084 if (ntries == 10) { 1085 aprint_error("%s: could not read EEPROM\n", 1086 sc->sc_dev.dv_xname); 1087 return ETIMEDOUT; 1088 } 1089 *out++ = val >> 16; 1090 if (len > 1) 1091 *out++ = val >> 24; 1092 } 1093 wpi_mem_unlock(sc); 1094 1095 return 0; 1096 } 1097 1098 /* 1099 * The firmware boot code is small and is intended to be copied directly into 1100 * the NIC internal memory. 1101 */ 1102 int 1103 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1104 { 1105 int ntries; 1106 1107 size /= sizeof (uint32_t); 1108 1109 wpi_mem_lock(sc); 1110 1111 /* copy microcode image into NIC memory */ 1112 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1113 (const uint32_t *)ucode, size); 1114 1115 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1116 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1117 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1118 1119 /* run microcode */ 1120 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1121 1122 /* wait for transfer to complete */ 1123 for (ntries = 0; ntries < 1000; ntries++) { 1124 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1125 break; 1126 DELAY(10); 1127 } 1128 if (ntries == 1000) { 1129 wpi_mem_unlock(sc); 1130 printf("%s: could not load boot firmware\n", 1131 sc->sc_dev.dv_xname); 1132 return ETIMEDOUT; 1133 } 1134 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1135 1136 wpi_mem_unlock(sc); 1137 1138 return 0; 1139 } 1140 1141 static int 1142 wpi_load_firmware(struct wpi_softc *sc) 1143 { 1144 struct wpi_dma_info *dma = &sc->fw_dma; 1145 struct wpi_firmware_hdr hdr; 1146 const uint8_t *init_text, *init_data, *main_text, *main_data; 1147 const uint8_t *boot_text; 1148 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1149 uint32_t boot_textsz; 1150 firmware_handle_t fw; 1151 u_char *dfw; 1152 size_t size; 1153 int error; 1154 1155 /* load firmware image from disk */ 1156 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1157 aprint_error("%s: could not read firmware file\n", 1158 sc->sc_dev.dv_xname); 1159 goto fail1; 1160 } 1161 1162 size = firmware_get_size(fw); 1163 1164 /* extract firmware header information */ 1165 if (size < sizeof (struct wpi_firmware_hdr)) { 1166 aprint_error("%s: truncated firmware header: %zu bytes\n", 1167 sc->sc_dev.dv_xname, size); 1168 error = EINVAL; 1169 goto fail2; 1170 } 1171 1172 if ((error = firmware_read(fw, 0, &hdr, 1173 sizeof (struct wpi_firmware_hdr))) != 0) { 1174 aprint_error("%s: can't get firmware header\n", 1175 sc->sc_dev.dv_xname); 1176 goto fail2; 1177 } 1178 1179 main_textsz = le32toh(hdr.main_textsz); 1180 main_datasz = le32toh(hdr.main_datasz); 1181 init_textsz = le32toh(hdr.init_textsz); 1182 init_datasz = le32toh(hdr.init_datasz); 1183 boot_textsz = le32toh(hdr.boot_textsz); 1184 1185 /* sanity-check firmware segments sizes */ 1186 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1187 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1188 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1189 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1190 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1191 (boot_textsz & 3) != 0) { 1192 printf("%s: invalid firmware header\n", sc->sc_dev.dv_xname); 1193 error = EINVAL; 1194 goto fail2; 1195 } 1196 1197 /* check that all firmware segments are present */ 1198 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1199 main_datasz + init_textsz + init_datasz + boot_textsz) { 1200 aprint_error("%s: firmware file too short: %zu bytes\n", 1201 sc->sc_dev.dv_xname, size); 1202 error = EINVAL; 1203 goto fail2; 1204 } 1205 1206 dfw = firmware_malloc(size); 1207 if (dfw == NULL) { 1208 aprint_error("%s: not enough memory to stock firmware\n", 1209 sc->sc_dev.dv_xname); 1210 error = ENOMEM; 1211 goto fail2; 1212 } 1213 1214 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1215 aprint_error("%s: can't get firmware\n", 1216 sc->sc_dev.dv_xname); 1217 goto fail2; 1218 } 1219 1220 /* get pointers to firmware segments */ 1221 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1222 main_data = main_text + main_textsz; 1223 init_text = main_data + main_datasz; 1224 init_data = init_text + init_textsz; 1225 boot_text = init_data + init_datasz; 1226 1227 /* copy initialization images into pre-allocated DMA-safe memory */ 1228 memcpy(dma->vaddr, init_data, init_datasz); 1229 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1230 1231 /* tell adapter where to find initialization images */ 1232 wpi_mem_lock(sc); 1233 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1234 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1235 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1236 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1237 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1238 wpi_mem_unlock(sc); 1239 1240 /* load firmware boot code */ 1241 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1242 printf("%s: could not load boot firmware\n", 1243 sc->sc_dev.dv_xname); 1244 goto fail3; 1245 } 1246 1247 /* now press "execute" ;-) */ 1248 WPI_WRITE(sc, WPI_RESET, 0); 1249 1250 /* ..and wait at most one second for adapter to initialize */ 1251 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1252 /* this isn't what was supposed to happen.. */ 1253 aprint_error("%s: timeout waiting for adapter to initialize\n", 1254 sc->sc_dev.dv_xname); 1255 } 1256 1257 /* copy runtime images into pre-allocated DMA-safe memory */ 1258 memcpy(dma->vaddr, main_data, main_datasz); 1259 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1260 1261 /* tell adapter where to find runtime images */ 1262 wpi_mem_lock(sc); 1263 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1264 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1265 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1266 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1267 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1268 wpi_mem_unlock(sc); 1269 1270 /* wait at most one second for second alive notification */ 1271 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1272 /* this isn't what was supposed to happen.. */ 1273 printf("%s: timeout waiting for adapter to initialize\n", 1274 sc->sc_dev.dv_xname); 1275 } 1276 1277 1278 fail3: firmware_free(dfw,size); 1279 fail2: firmware_close(fw); 1280 fail1: return error; 1281 } 1282 1283 static void 1284 wpi_calib_timeout(void *arg) 1285 { 1286 struct wpi_softc *sc = arg; 1287 struct ieee80211com *ic = &sc->sc_ic; 1288 int temp, s; 1289 1290 /* automatic rate control triggered every 500ms */ 1291 if (ic->ic_fixed_rate == -1) { 1292 s = splnet(); 1293 if (ic->ic_opmode == IEEE80211_M_STA) 1294 wpi_iter_func(sc, ic->ic_bss); 1295 else 1296 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1297 splx(s); 1298 } 1299 1300 /* update sensor data */ 1301 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1302 1303 /* automatic power calibration every 60s */ 1304 if (++sc->calib_cnt >= 120) { 1305 wpi_power_calibration(sc, temp); 1306 sc->calib_cnt = 0; 1307 } 1308 1309 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 1310 } 1311 1312 static void 1313 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1314 { 1315 struct wpi_softc *sc = arg; 1316 struct wpi_node *wn = (struct wpi_node *)ni; 1317 1318 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1319 } 1320 1321 /* 1322 * This function is called periodically (every 60 seconds) to adjust output 1323 * power to temperature changes. 1324 */ 1325 void 1326 wpi_power_calibration(struct wpi_softc *sc, int temp) 1327 { 1328 /* sanity-check read value */ 1329 if (temp < -260 || temp > 25) { 1330 /* this can't be correct, ignore */ 1331 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1332 return; 1333 } 1334 1335 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1336 1337 /* adjust Tx power if need be */ 1338 if (abs(temp - sc->temp) <= 6) 1339 return; 1340 1341 sc->temp = temp; 1342 1343 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1344 /* just warn, too bad for the automatic calibration... */ 1345 aprint_error("%s: could not adjust Tx power\n", 1346 sc->sc_dev.dv_xname); 1347 } 1348 } 1349 1350 static void 1351 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1352 struct wpi_rx_data *data) 1353 { 1354 struct ieee80211com *ic = &sc->sc_ic; 1355 struct ifnet *ifp = ic->ic_ifp; 1356 struct wpi_rx_ring *ring = &sc->rxq; 1357 struct wpi_rx_stat *stat; 1358 struct wpi_rx_head *head; 1359 struct wpi_rx_tail *tail; 1360 struct wpi_rbuf *rbuf; 1361 struct ieee80211_frame *wh; 1362 struct ieee80211_node *ni; 1363 struct mbuf *m, *mnew; 1364 int data_off ; 1365 1366 stat = (struct wpi_rx_stat *)(desc + 1); 1367 1368 if (stat->len > WPI_STAT_MAXLEN) { 1369 aprint_error("%s: invalid rx statistic header\n", 1370 sc->sc_dev.dv_xname); 1371 ifp->if_ierrors++; 1372 return; 1373 } 1374 1375 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1376 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1377 1378 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1379 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1380 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1381 le64toh(tail->tstamp))); 1382 1383 /* 1384 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1385 * to radiotap in monitor mode). 1386 */ 1387 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1388 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1389 ifp->if_ierrors++; 1390 return; 1391 } 1392 1393 /* Compute where are the useful datas */ 1394 data_off = (char*)(head + 1) - mtod(data->m, char*); 1395 1396 /* 1397 * If the number of free entry is too low 1398 * just dup the data->m socket and reuse the same rbuf entry 1399 */ 1400 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1401 1402 /* Prepare the mbuf for the m_dup */ 1403 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1404 data->m->m_data = (char*) data->m->m_data + data_off; 1405 1406 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1407 1408 /* Restore the m_data pointer for future use */ 1409 data->m->m_data = (char*) data->m->m_data - data_off; 1410 1411 if (m == NULL) { 1412 ifp->if_ierrors++; 1413 return; 1414 } 1415 } else { 1416 1417 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1418 if (mnew == NULL) { 1419 ifp->if_ierrors++; 1420 return; 1421 } 1422 1423 rbuf = wpi_alloc_rbuf(sc); 1424 KASSERT(rbuf != NULL); 1425 1426 /* attach Rx buffer to mbuf */ 1427 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1428 rbuf); 1429 mnew->m_flags |= M_EXT_RW; 1430 1431 m = data->m; 1432 data->m = mnew; 1433 1434 /* update Rx descriptor */ 1435 ring->desc[ring->cur] = htole32(rbuf->paddr); 1436 1437 m->m_data = (char*)m->m_data + data_off; 1438 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1439 } 1440 1441 /* finalize mbuf */ 1442 m->m_pkthdr.rcvif = ifp; 1443 1444 if (ic->ic_state == IEEE80211_S_SCAN) 1445 wpi_fix_channel(ic, m); 1446 1447 #if NBPFILTER > 0 1448 if (sc->sc_drvbpf != NULL) { 1449 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1450 1451 tap->wr_flags = 0; 1452 tap->wr_chan_freq = 1453 htole16(ic->ic_channels[head->chan].ic_freq); 1454 tap->wr_chan_flags = 1455 htole16(ic->ic_channels[head->chan].ic_flags); 1456 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1457 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1458 tap->wr_tsft = tail->tstamp; 1459 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1460 switch (head->rate) { 1461 /* CCK rates */ 1462 case 10: tap->wr_rate = 2; break; 1463 case 20: tap->wr_rate = 4; break; 1464 case 55: tap->wr_rate = 11; break; 1465 case 110: tap->wr_rate = 22; break; 1466 /* OFDM rates */ 1467 case 0xd: tap->wr_rate = 12; break; 1468 case 0xf: tap->wr_rate = 18; break; 1469 case 0x5: tap->wr_rate = 24; break; 1470 case 0x7: tap->wr_rate = 36; break; 1471 case 0x9: tap->wr_rate = 48; break; 1472 case 0xb: tap->wr_rate = 72; break; 1473 case 0x1: tap->wr_rate = 96; break; 1474 case 0x3: tap->wr_rate = 108; break; 1475 /* unknown rate: should not happen */ 1476 default: tap->wr_rate = 0; 1477 } 1478 if (le16toh(head->flags) & 0x4) 1479 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1480 1481 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1482 } 1483 #endif 1484 1485 /* grab a reference to the source node */ 1486 wh = mtod(m, struct ieee80211_frame *); 1487 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1488 1489 /* send the frame to the 802.11 layer */ 1490 ieee80211_input(ic, m, ni, stat->rssi, 0); 1491 1492 /* release node reference */ 1493 ieee80211_free_node(ni); 1494 } 1495 1496 static void 1497 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1498 { 1499 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1500 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1501 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1502 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1503 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1504 1505 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1506 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1507 stat->nkill, stat->rate, le32toh(stat->duration), 1508 le32toh(stat->status))); 1509 1510 /* 1511 * Update rate control statistics for the node. 1512 * XXX we should not count mgmt frames since they're always sent at 1513 * the lowest available bit-rate. 1514 */ 1515 wn->amn.amn_txcnt++; 1516 if (stat->ntries > 0) { 1517 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1518 wn->amn.amn_retrycnt++; 1519 } 1520 1521 if ((le32toh(stat->status) & 0xff) != 1) 1522 ifp->if_oerrors++; 1523 else 1524 ifp->if_opackets++; 1525 1526 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1527 m_freem(txdata->m); 1528 txdata->m = NULL; 1529 ieee80211_free_node(txdata->ni); 1530 txdata->ni = NULL; 1531 1532 ring->queued--; 1533 1534 sc->sc_tx_timer = 0; 1535 ifp->if_flags &= ~IFF_OACTIVE; 1536 wpi_start(ifp); 1537 } 1538 1539 static void 1540 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1541 { 1542 struct wpi_tx_ring *ring = &sc->cmdq; 1543 struct wpi_tx_data *data; 1544 1545 if ((desc->qid & 7) != 4) 1546 return; /* not a command ack */ 1547 1548 data = &ring->data[desc->idx]; 1549 1550 /* if the command was mapped in a mbuf, free it */ 1551 if (data->m != NULL) { 1552 bus_dmamap_unload(sc->sc_dmat, data->map); 1553 m_freem(data->m); 1554 data->m = NULL; 1555 } 1556 1557 wakeup(&ring->cmd[desc->idx]); 1558 } 1559 1560 static void 1561 wpi_notif_intr(struct wpi_softc *sc) 1562 { 1563 struct ieee80211com *ic = &sc->sc_ic; 1564 struct ifnet *ifp = ic->ic_ifp; 1565 struct wpi_rx_desc *desc; 1566 struct wpi_rx_data *data; 1567 uint32_t hw; 1568 1569 hw = le32toh(sc->shared->next); 1570 while (sc->rxq.cur != hw) { 1571 data = &sc->rxq.data[sc->rxq.cur]; 1572 1573 desc = mtod(data->m, struct wpi_rx_desc *); 1574 1575 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1576 "len=%d\n", desc->qid, desc->idx, desc->flags, 1577 desc->type, le32toh(desc->len))); 1578 1579 if (!(desc->qid & 0x80)) /* reply to a command */ 1580 wpi_cmd_intr(sc, desc); 1581 1582 switch (desc->type) { 1583 case WPI_RX_DONE: 1584 /* a 802.11 frame was received */ 1585 wpi_rx_intr(sc, desc, data); 1586 break; 1587 1588 case WPI_TX_DONE: 1589 /* a 802.11 frame has been transmitted */ 1590 wpi_tx_intr(sc, desc); 1591 break; 1592 1593 case WPI_UC_READY: 1594 { 1595 struct wpi_ucode_info *uc = 1596 (struct wpi_ucode_info *)(desc + 1); 1597 1598 /* the microcontroller is ready */ 1599 DPRINTF(("microcode alive notification version %x " 1600 "alive %x\n", le32toh(uc->version), 1601 le32toh(uc->valid))); 1602 1603 if (le32toh(uc->valid) != 1) { 1604 aprint_error("%s: microcontroller " 1605 "initialization failed\n", 1606 sc->sc_dev.dv_xname); 1607 } 1608 break; 1609 } 1610 case WPI_STATE_CHANGED: 1611 { 1612 uint32_t *status = (uint32_t *)(desc + 1); 1613 1614 /* enabled/disabled notification */ 1615 DPRINTF(("state changed to %x\n", le32toh(*status))); 1616 1617 if (le32toh(*status) & 1) { 1618 /* the radio button has to be pushed */ 1619 aprint_error("%s: Radio transmitter is off\n", 1620 sc->sc_dev.dv_xname); 1621 /* turn the interface down */ 1622 ifp->if_flags &= ~IFF_UP; 1623 wpi_stop(ifp, 1); 1624 return; /* no further processing */ 1625 } 1626 break; 1627 } 1628 case WPI_START_SCAN: 1629 { 1630 struct wpi_start_scan *scan = 1631 (struct wpi_start_scan *)(desc + 1); 1632 1633 DPRINTFN(2, ("scanning channel %d status %x\n", 1634 scan->chan, le32toh(scan->status))); 1635 1636 /* fix current channel */ 1637 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1638 break; 1639 } 1640 case WPI_STOP_SCAN: 1641 { 1642 struct wpi_stop_scan *scan = 1643 (struct wpi_stop_scan *)(desc + 1); 1644 1645 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1646 scan->nchan, scan->status, scan->chan)); 1647 1648 if (scan->status == 1 && scan->chan <= 14) { 1649 /* 1650 * We just finished scanning 802.11g channels, 1651 * start scanning 802.11a ones. 1652 */ 1653 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1654 break; 1655 } 1656 sc->is_scanning = false; 1657 ieee80211_end_scan(ic); 1658 break; 1659 } 1660 } 1661 1662 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1663 } 1664 1665 /* tell the firmware what we have processed */ 1666 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1667 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1668 } 1669 1670 static int 1671 wpi_intr(void *arg) 1672 { 1673 struct wpi_softc *sc = arg; 1674 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1675 uint32_t r; 1676 1677 r = WPI_READ(sc, WPI_INTR); 1678 if (r == 0 || r == 0xffffffff) 1679 return 0; /* not for us */ 1680 1681 DPRINTFN(5, ("interrupt reg %x\n", r)); 1682 1683 /* disable interrupts */ 1684 WPI_WRITE(sc, WPI_MASK, 0); 1685 /* ack interrupts */ 1686 WPI_WRITE(sc, WPI_INTR, r); 1687 1688 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1689 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1690 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1691 wpi_stop(sc->sc_ic.ic_ifp, 1); 1692 return 1; 1693 } 1694 1695 if (r & WPI_RX_INTR) 1696 wpi_notif_intr(sc); 1697 1698 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1699 wakeup(sc); 1700 1701 /* re-enable interrupts */ 1702 if (ifp->if_flags & IFF_UP) 1703 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1704 1705 return 1; 1706 } 1707 1708 static uint8_t 1709 wpi_plcp_signal(int rate) 1710 { 1711 switch (rate) { 1712 /* CCK rates (returned values are device-dependent) */ 1713 case 2: return 10; 1714 case 4: return 20; 1715 case 11: return 55; 1716 case 22: return 110; 1717 1718 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1719 /* R1-R4, (u)ral is R4-R1 */ 1720 case 12: return 0xd; 1721 case 18: return 0xf; 1722 case 24: return 0x5; 1723 case 36: return 0x7; 1724 case 48: return 0x9; 1725 case 72: return 0xb; 1726 case 96: return 0x1; 1727 case 108: return 0x3; 1728 1729 /* unsupported rates (should not get there) */ 1730 default: return 0; 1731 } 1732 } 1733 1734 /* quickly determine if a given rate is CCK or OFDM */ 1735 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1736 1737 static int 1738 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1739 int ac) 1740 { 1741 struct ieee80211com *ic = &sc->sc_ic; 1742 struct wpi_tx_ring *ring = &sc->txq[ac]; 1743 struct wpi_tx_desc *desc; 1744 struct wpi_tx_data *data; 1745 struct wpi_tx_cmd *cmd; 1746 struct wpi_cmd_data *tx; 1747 struct ieee80211_frame *wh; 1748 struct ieee80211_key *k; 1749 const struct chanAccParams *cap; 1750 struct mbuf *mnew; 1751 int i, error, rate, hdrlen, noack = 0; 1752 1753 desc = &ring->desc[ring->cur]; 1754 data = &ring->data[ring->cur]; 1755 1756 wh = mtod(m0, struct ieee80211_frame *); 1757 1758 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1759 cap = &ic->ic_wme.wme_chanParams; 1760 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1761 } 1762 1763 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1764 k = ieee80211_crypto_encap(ic, ni, m0); 1765 if (k == NULL) { 1766 m_freem(m0); 1767 return ENOBUFS; 1768 } 1769 1770 /* packet header may have moved, reset our local pointer */ 1771 wh = mtod(m0, struct ieee80211_frame *); 1772 } 1773 1774 hdrlen = ieee80211_anyhdrsize(wh); 1775 1776 /* pickup a rate */ 1777 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1778 IEEE80211_FC0_TYPE_MGT) { 1779 /* mgmt frames are sent at the lowest available bit-rate */ 1780 rate = ni->ni_rates.rs_rates[0]; 1781 } else { 1782 if (ic->ic_fixed_rate != -1) { 1783 rate = ic->ic_sup_rates[ic->ic_curmode]. 1784 rs_rates[ic->ic_fixed_rate]; 1785 } else 1786 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1787 } 1788 rate &= IEEE80211_RATE_VAL; 1789 1790 1791 #if NBPFILTER > 0 1792 if (sc->sc_drvbpf != NULL) { 1793 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1794 1795 tap->wt_flags = 0; 1796 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1797 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1798 tap->wt_rate = rate; 1799 tap->wt_hwqueue = ac; 1800 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1801 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1802 1803 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1804 } 1805 #endif 1806 1807 cmd = &ring->cmd[ring->cur]; 1808 cmd->code = WPI_CMD_TX_DATA; 1809 cmd->flags = 0; 1810 cmd->qid = ring->qid; 1811 cmd->idx = ring->cur; 1812 1813 tx = (struct wpi_cmd_data *)cmd->data; 1814 tx->flags = 0; 1815 1816 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1817 tx->flags |= htole32(WPI_TX_NEED_ACK); 1818 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1819 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1820 1821 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1822 1823 /* retrieve destination node's id */ 1824 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1825 WPI_ID_BSS; 1826 1827 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1828 IEEE80211_FC0_TYPE_MGT) { 1829 /* tell h/w to set timestamp in probe responses */ 1830 if ((wh->i_fc[0] & 1831 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1832 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1833 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1834 1835 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1836 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1837 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1838 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1839 tx->timeout = htole16(3); 1840 else 1841 tx->timeout = htole16(2); 1842 } else 1843 tx->timeout = htole16(0); 1844 1845 tx->rate = wpi_plcp_signal(rate); 1846 1847 /* be very persistant at sending frames out */ 1848 tx->rts_ntries = 7; 1849 tx->data_ntries = 15; 1850 1851 tx->ofdm_mask = 0xff; 1852 tx->cck_mask = 0xf; 1853 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1854 1855 tx->len = htole16(m0->m_pkthdr.len); 1856 1857 /* save and trim IEEE802.11 header */ 1858 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 1859 m_adj(m0, hdrlen); 1860 1861 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1862 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1863 if (error != 0 && error != EFBIG) { 1864 aprint_error("%s: could not map mbuf (error %d)\n", 1865 sc->sc_dev.dv_xname, error); 1866 m_freem(m0); 1867 return error; 1868 } 1869 if (error != 0) { 1870 /* too many fragments, linearize */ 1871 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1872 if (mnew == NULL) { 1873 m_freem(m0); 1874 return ENOMEM; 1875 } 1876 1877 M_COPY_PKTHDR(mnew, m0); 1878 if (m0->m_pkthdr.len > MHLEN) { 1879 MCLGET(mnew, M_DONTWAIT); 1880 if (!(mnew->m_flags & M_EXT)) { 1881 m_freem(m0); 1882 m_freem(mnew); 1883 return ENOMEM; 1884 } 1885 } 1886 1887 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1888 m_freem(m0); 1889 mnew->m_len = mnew->m_pkthdr.len; 1890 m0 = mnew; 1891 1892 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1893 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1894 if (error != 0) { 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 } 1901 1902 data->m = m0; 1903 data->ni = ni; 1904 1905 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1906 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1907 1908 /* first scatter/gather segment is used by the tx data command */ 1909 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1910 (1 + data->map->dm_nsegs) << 24); 1911 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1912 ring->cur * sizeof (struct wpi_tx_cmd)); 1913 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 1914 ((hdrlen + 3) & ~3)); 1915 1916 for (i = 1; i <= data->map->dm_nsegs; i++) { 1917 desc->segs[i].addr = 1918 htole32(data->map->dm_segs[i - 1].ds_addr); 1919 desc->segs[i].len = 1920 htole32(data->map->dm_segs[i - 1].ds_len); 1921 } 1922 1923 ring->queued++; 1924 1925 /* kick ring */ 1926 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1927 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1928 1929 return 0; 1930 } 1931 1932 static void 1933 wpi_start(struct ifnet *ifp) 1934 { 1935 struct wpi_softc *sc = ifp->if_softc; 1936 struct ieee80211com *ic = &sc->sc_ic; 1937 struct ieee80211_node *ni; 1938 struct ether_header *eh; 1939 struct mbuf *m0; 1940 int ac; 1941 1942 /* 1943 * net80211 may still try to send management frames even if the 1944 * IFF_RUNNING flag is not set... 1945 */ 1946 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1947 return; 1948 1949 for (;;) { 1950 IF_DEQUEUE(&ic->ic_mgtq, m0); 1951 if (m0 != NULL) { 1952 1953 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1954 m0->m_pkthdr.rcvif = NULL; 1955 1956 /* management frames go into ring 0 */ 1957 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1958 ifp->if_oerrors++; 1959 continue; 1960 } 1961 #if NBPFILTER > 0 1962 if (ic->ic_rawbpf != NULL) 1963 bpf_mtap(ic->ic_rawbpf, m0); 1964 #endif 1965 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1966 ifp->if_oerrors++; 1967 break; 1968 } 1969 } else { 1970 if (ic->ic_state != IEEE80211_S_RUN) 1971 break; 1972 IFQ_POLL(&ifp->if_snd, m0); 1973 if (m0 == NULL) 1974 break; 1975 1976 if (m0->m_len < sizeof (*eh) && 1977 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 1978 ifp->if_oerrors++; 1979 continue; 1980 } 1981 eh = mtod(m0, struct ether_header *); 1982 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1983 if (ni == NULL) { 1984 m_freem(m0); 1985 ifp->if_oerrors++; 1986 continue; 1987 } 1988 1989 /* classify mbuf so we can find which tx ring to use */ 1990 if (ieee80211_classify(ic, m0, ni) != 0) { 1991 m_freem(m0); 1992 ieee80211_free_node(ni); 1993 ifp->if_oerrors++; 1994 continue; 1995 } 1996 1997 /* no QoS encapsulation for EAPOL frames */ 1998 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 1999 M_WME_GETAC(m0) : WME_AC_BE; 2000 2001 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2002 /* there is no place left in this ring */ 2003 ifp->if_flags |= IFF_OACTIVE; 2004 break; 2005 } 2006 IFQ_DEQUEUE(&ifp->if_snd, m0); 2007 #if NBPFILTER > 0 2008 if (ifp->if_bpf != NULL) 2009 bpf_mtap(ifp->if_bpf, m0); 2010 #endif 2011 m0 = ieee80211_encap(ic, m0, ni); 2012 if (m0 == NULL) { 2013 ieee80211_free_node(ni); 2014 ifp->if_oerrors++; 2015 continue; 2016 } 2017 #if NBPFILTER > 0 2018 if (ic->ic_rawbpf != NULL) 2019 bpf_mtap(ic->ic_rawbpf, m0); 2020 #endif 2021 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2022 ieee80211_free_node(ni); 2023 ifp->if_oerrors++; 2024 break; 2025 } 2026 } 2027 2028 sc->sc_tx_timer = 5; 2029 ifp->if_timer = 1; 2030 } 2031 } 2032 2033 static void 2034 wpi_watchdog(struct ifnet *ifp) 2035 { 2036 struct wpi_softc *sc = ifp->if_softc; 2037 2038 ifp->if_timer = 0; 2039 2040 if (sc->sc_tx_timer > 0) { 2041 if (--sc->sc_tx_timer == 0) { 2042 aprint_error("%s: device timeout\n", 2043 sc->sc_dev.dv_xname); 2044 ifp->if_oerrors++; 2045 ifp->if_flags &= ~IFF_UP; 2046 wpi_stop(ifp, 1); 2047 return; 2048 } 2049 ifp->if_timer = 1; 2050 } 2051 2052 ieee80211_watchdog(&sc->sc_ic); 2053 } 2054 2055 static int 2056 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2057 { 2058 #define IS_RUNNING(ifp) \ 2059 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2060 2061 struct wpi_softc *sc = ifp->if_softc; 2062 struct ieee80211com *ic = &sc->sc_ic; 2063 int s, error = 0; 2064 2065 s = splnet(); 2066 2067 switch (cmd) { 2068 case SIOCSIFFLAGS: 2069 if (ifp->if_flags & IFF_UP) { 2070 if (!(ifp->if_flags & IFF_RUNNING)) 2071 wpi_init(ifp); 2072 } else { 2073 if (ifp->if_flags & IFF_RUNNING) 2074 wpi_stop(ifp, 1); 2075 } 2076 break; 2077 2078 case SIOCADDMULTI: 2079 case SIOCDELMULTI: 2080 /* XXX no h/w multicast filter? --dyoung */ 2081 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2082 /* setup multicast filter, etc */ 2083 error = 0; 2084 } 2085 break; 2086 2087 default: 2088 error = ieee80211_ioctl(ic, cmd, data); 2089 } 2090 2091 if (error == ENETRESET) { 2092 if (IS_RUNNING(ifp) && 2093 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2094 wpi_init(ifp); 2095 error = 0; 2096 } 2097 2098 splx(s); 2099 return error; 2100 2101 #undef IS_RUNNING 2102 } 2103 2104 /* 2105 * Extract various information from EEPROM. 2106 */ 2107 static void 2108 wpi_read_eeprom(struct wpi_softc *sc) 2109 { 2110 struct ieee80211com *ic = &sc->sc_ic; 2111 char domain[4]; 2112 int i; 2113 2114 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2115 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2116 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2117 2118 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2119 sc->type)); 2120 2121 /* read and print regulatory domain */ 2122 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2123 aprint_normal(", %.4s", domain); 2124 2125 /* read and print MAC address */ 2126 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2127 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2128 2129 /* read the list of authorized channels */ 2130 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2131 wpi_read_eeprom_channels(sc, i); 2132 2133 /* read the list of power groups */ 2134 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2135 wpi_read_eeprom_group(sc, i); 2136 } 2137 2138 static void 2139 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2140 { 2141 struct ieee80211com *ic = &sc->sc_ic; 2142 const struct wpi_chan_band *band = &wpi_bands[n]; 2143 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2144 int chan, i; 2145 2146 wpi_read_prom_data(sc, band->addr, channels, 2147 band->nchan * sizeof (struct wpi_eeprom_chan)); 2148 2149 for (i = 0; i < band->nchan; i++) { 2150 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2151 continue; 2152 2153 chan = band->chan[i]; 2154 2155 if (n == 0) { /* 2GHz band */ 2156 ic->ic_channels[chan].ic_freq = 2157 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2158 ic->ic_channels[chan].ic_flags = 2159 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2160 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2161 2162 } else { /* 5GHz band */ 2163 /* 2164 * Some 3945abg adapters support channels 7, 8, 11 2165 * and 12 in the 2GHz *and* 5GHz bands. 2166 * Because of limitations in our net80211(9) stack, 2167 * we can't support these channels in 5GHz band. 2168 */ 2169 if (chan <= 14) 2170 continue; 2171 2172 ic->ic_channels[chan].ic_freq = 2173 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2174 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2175 } 2176 2177 /* is active scan allowed on this channel? */ 2178 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2179 ic->ic_channels[chan].ic_flags |= 2180 IEEE80211_CHAN_PASSIVE; 2181 } 2182 2183 /* save maximum allowed power for this channel */ 2184 sc->maxpwr[chan] = channels[i].maxpwr; 2185 2186 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2187 chan, channels[i].flags, sc->maxpwr[chan])); 2188 } 2189 } 2190 2191 static void 2192 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2193 { 2194 struct wpi_power_group *group = &sc->groups[n]; 2195 struct wpi_eeprom_group rgroup; 2196 int i; 2197 2198 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2199 sizeof rgroup); 2200 2201 /* save power group information */ 2202 group->chan = rgroup.chan; 2203 group->maxpwr = rgroup.maxpwr; 2204 /* temperature at which the samples were taken */ 2205 group->temp = (int16_t)le16toh(rgroup.temp); 2206 2207 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2208 group->chan, group->maxpwr, group->temp)); 2209 2210 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2211 group->samples[i].index = rgroup.samples[i].index; 2212 group->samples[i].power = rgroup.samples[i].power; 2213 2214 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2215 group->samples[i].index, group->samples[i].power)); 2216 } 2217 } 2218 2219 /* 2220 * Send a command to the firmware. 2221 */ 2222 static int 2223 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2224 { 2225 struct wpi_tx_ring *ring = &sc->cmdq; 2226 struct wpi_tx_desc *desc; 2227 struct wpi_tx_cmd *cmd; 2228 2229 KASSERT(size <= sizeof cmd->data); 2230 2231 desc = &ring->desc[ring->cur]; 2232 cmd = &ring->cmd[ring->cur]; 2233 2234 cmd->code = code; 2235 cmd->flags = 0; 2236 cmd->qid = ring->qid; 2237 cmd->idx = ring->cur; 2238 memcpy(cmd->data, buf, size); 2239 2240 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2241 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2242 ring->cur * sizeof (struct wpi_tx_cmd)); 2243 desc->segs[0].len = htole32(4 + size); 2244 2245 /* kick cmd ring */ 2246 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2247 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2248 2249 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2250 } 2251 2252 static int 2253 wpi_wme_update(struct ieee80211com *ic) 2254 { 2255 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2256 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2257 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2258 const struct wmeParams *wmep; 2259 struct wpi_wme_setup wme; 2260 int ac; 2261 2262 /* don't override default WME values if WME is not actually enabled */ 2263 if (!(ic->ic_flags & IEEE80211_F_WME)) 2264 return 0; 2265 2266 wme.flags = 0; 2267 for (ac = 0; ac < WME_NUM_AC; ac++) { 2268 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2269 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2270 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2271 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2272 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2273 2274 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2275 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2276 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2277 } 2278 2279 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2280 #undef WPI_USEC 2281 #undef WPI_EXP2 2282 } 2283 2284 /* 2285 * Configure h/w multi-rate retries. 2286 */ 2287 static int 2288 wpi_mrr_setup(struct wpi_softc *sc) 2289 { 2290 struct ieee80211com *ic = &sc->sc_ic; 2291 struct wpi_mrr_setup mrr; 2292 int i, error; 2293 2294 /* CCK rates (not used with 802.11a) */ 2295 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2296 mrr.rates[i].flags = 0; 2297 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2298 /* fallback to the immediate lower CCK rate (if any) */ 2299 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2300 /* try one time at this rate before falling back to "next" */ 2301 mrr.rates[i].ntries = 1; 2302 } 2303 2304 /* OFDM rates (not used with 802.11b) */ 2305 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2306 mrr.rates[i].flags = 0; 2307 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2308 /* fallback to the immediate lower rate (if any) */ 2309 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2310 mrr.rates[i].next = (i == WPI_OFDM6) ? 2311 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2312 WPI_OFDM6 : WPI_CCK2) : 2313 i - 1; 2314 /* try one time at this rate before falling back to "next" */ 2315 mrr.rates[i].ntries = 1; 2316 } 2317 2318 /* setup MRR for control frames */ 2319 mrr.which = htole32(WPI_MRR_CTL); 2320 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2321 if (error != 0) { 2322 aprint_error("%s: could not setup MRR for control frames\n", 2323 sc->sc_dev.dv_xname); 2324 return error; 2325 } 2326 2327 /* setup MRR for data frames */ 2328 mrr.which = htole32(WPI_MRR_DATA); 2329 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2330 if (error != 0) { 2331 aprint_error("%s: could not setup MRR for data frames\n", 2332 sc->sc_dev.dv_xname); 2333 return error; 2334 } 2335 2336 return 0; 2337 } 2338 2339 static void 2340 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2341 { 2342 struct wpi_cmd_led led; 2343 2344 led.which = which; 2345 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2346 led.off = off; 2347 led.on = on; 2348 2349 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2350 } 2351 2352 static void 2353 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2354 { 2355 struct wpi_cmd_tsf tsf; 2356 uint64_t val, mod; 2357 2358 memset(&tsf, 0, sizeof tsf); 2359 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2360 tsf.bintval = htole16(ni->ni_intval); 2361 tsf.lintval = htole16(10); 2362 2363 /* compute remaining time until next beacon */ 2364 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2365 mod = le64toh(tsf.tstamp) % val; 2366 tsf.binitval = htole32((uint32_t)(val - mod)); 2367 2368 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2369 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2370 2371 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2372 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2373 } 2374 2375 /* 2376 * Update Tx power to match what is defined for channel `c'. 2377 */ 2378 static int 2379 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2380 { 2381 struct ieee80211com *ic = &sc->sc_ic; 2382 struct wpi_power_group *group; 2383 struct wpi_cmd_txpower txpower; 2384 u_int chan; 2385 int i; 2386 2387 /* get channel number */ 2388 chan = ieee80211_chan2ieee(ic, c); 2389 2390 /* find the power group to which this channel belongs */ 2391 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2392 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2393 if (chan <= group->chan) 2394 break; 2395 } else 2396 group = &sc->groups[0]; 2397 2398 memset(&txpower, 0, sizeof txpower); 2399 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2400 txpower.chan = htole16(chan); 2401 2402 /* set Tx power for all OFDM and CCK rates */ 2403 for (i = 0; i <= 11 ; i++) { 2404 /* retrieve Tx power for this channel/rate combination */ 2405 int idx = wpi_get_power_index(sc, group, c, 2406 wpi_ridx_to_rate[i]); 2407 2408 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2409 2410 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2411 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2412 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2413 } else { 2414 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2415 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2416 } 2417 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2418 wpi_ridx_to_rate[i], idx)); 2419 } 2420 2421 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2422 } 2423 2424 /* 2425 * Determine Tx power index for a given channel/rate combination. 2426 * This takes into account the regulatory information from EEPROM and the 2427 * current temperature. 2428 */ 2429 static int 2430 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2431 struct ieee80211_channel *c, int rate) 2432 { 2433 /* fixed-point arithmetic division using a n-bit fractional part */ 2434 #define fdivround(a, b, n) \ 2435 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2436 2437 /* linear interpolation */ 2438 #define interpolate(x, x1, y1, x2, y2, n) \ 2439 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2440 2441 struct ieee80211com *ic = &sc->sc_ic; 2442 struct wpi_power_sample *sample; 2443 int pwr, idx; 2444 u_int chan; 2445 2446 /* get channel number */ 2447 chan = ieee80211_chan2ieee(ic, c); 2448 2449 /* default power is group's maximum power - 3dB */ 2450 pwr = group->maxpwr / 2; 2451 2452 /* decrease power for highest OFDM rates to reduce distortion */ 2453 switch (rate) { 2454 case 72: /* 36Mb/s */ 2455 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2456 break; 2457 case 96: /* 48Mb/s */ 2458 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2459 break; 2460 case 108: /* 54Mb/s */ 2461 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2462 break; 2463 } 2464 2465 /* never exceed channel's maximum allowed Tx power */ 2466 pwr = min(pwr, sc->maxpwr[chan]); 2467 2468 /* retrieve power index into gain tables from samples */ 2469 for (sample = group->samples; sample < &group->samples[3]; sample++) 2470 if (pwr > sample[1].power) 2471 break; 2472 /* fixed-point linear interpolation using a 19-bit fractional part */ 2473 idx = interpolate(pwr, sample[0].power, sample[0].index, 2474 sample[1].power, sample[1].index, 19); 2475 2476 /* 2477 * Adjust power index based on current temperature: 2478 * - if cooler than factory-calibrated: decrease output power 2479 * - if warmer than factory-calibrated: increase output power 2480 */ 2481 idx -= (sc->temp - group->temp) * 11 / 100; 2482 2483 /* decrease power for CCK rates (-5dB) */ 2484 if (!WPI_RATE_IS_OFDM(rate)) 2485 idx += 10; 2486 2487 /* keep power index in a valid range */ 2488 if (idx < 0) 2489 return 0; 2490 if (idx > WPI_MAX_PWR_INDEX) 2491 return WPI_MAX_PWR_INDEX; 2492 return idx; 2493 2494 #undef interpolate 2495 #undef fdivround 2496 } 2497 2498 /* 2499 * Build a beacon frame that the firmware will broadcast periodically in 2500 * IBSS or HostAP modes. 2501 */ 2502 static int 2503 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2504 { 2505 struct ieee80211com *ic = &sc->sc_ic; 2506 struct wpi_tx_ring *ring = &sc->cmdq; 2507 struct wpi_tx_desc *desc; 2508 struct wpi_tx_data *data; 2509 struct wpi_tx_cmd *cmd; 2510 struct wpi_cmd_beacon *bcn; 2511 struct ieee80211_beacon_offsets bo; 2512 struct mbuf *m0; 2513 int error; 2514 2515 desc = &ring->desc[ring->cur]; 2516 data = &ring->data[ring->cur]; 2517 2518 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2519 if (m0 == NULL) { 2520 aprint_error("%s: could not allocate beacon frame\n", 2521 sc->sc_dev.dv_xname); 2522 return ENOMEM; 2523 } 2524 2525 cmd = &ring->cmd[ring->cur]; 2526 cmd->code = WPI_CMD_SET_BEACON; 2527 cmd->flags = 0; 2528 cmd->qid = ring->qid; 2529 cmd->idx = ring->cur; 2530 2531 bcn = (struct wpi_cmd_beacon *)cmd->data; 2532 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2533 bcn->id = WPI_ID_BROADCAST; 2534 bcn->ofdm_mask = 0xff; 2535 bcn->cck_mask = 0x0f; 2536 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2537 bcn->len = htole16(m0->m_pkthdr.len); 2538 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2539 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2540 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2541 2542 /* save and trim IEEE802.11 header */ 2543 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2544 m_adj(m0, sizeof (struct ieee80211_frame)); 2545 2546 /* assume beacon frame is contiguous */ 2547 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2548 BUS_DMA_READ | BUS_DMA_NOWAIT); 2549 if (error) { 2550 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2551 m_freem(m0); 2552 return error; 2553 } 2554 2555 data->m = m0; 2556 2557 /* first scatter/gather segment is used by the beacon command */ 2558 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2559 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2560 ring->cur * sizeof (struct wpi_tx_cmd)); 2561 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2562 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2563 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2564 2565 /* kick cmd ring */ 2566 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2567 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2568 2569 return 0; 2570 } 2571 2572 static int 2573 wpi_auth(struct wpi_softc *sc) 2574 { 2575 struct ieee80211com *ic = &sc->sc_ic; 2576 struct ieee80211_node *ni = ic->ic_bss; 2577 struct wpi_node_info node; 2578 int error; 2579 2580 /* update adapter's configuration */ 2581 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2582 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2583 sc->config.flags = htole32(WPI_CONFIG_TSF); 2584 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2585 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2586 WPI_CONFIG_24GHZ); 2587 } 2588 switch (ic->ic_curmode) { 2589 case IEEE80211_MODE_11A: 2590 sc->config.cck_mask = 0; 2591 sc->config.ofdm_mask = 0x15; 2592 break; 2593 case IEEE80211_MODE_11B: 2594 sc->config.cck_mask = 0x03; 2595 sc->config.ofdm_mask = 0; 2596 break; 2597 default: /* assume 802.11b/g */ 2598 sc->config.cck_mask = 0x0f; 2599 sc->config.ofdm_mask = 0x15; 2600 } 2601 2602 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2603 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2604 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2605 sizeof (struct wpi_config), 1); 2606 if (error != 0) { 2607 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2608 return error; 2609 } 2610 2611 /* configuration has changed, set Tx power accordingly */ 2612 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2613 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2614 return error; 2615 } 2616 2617 /* add default node */ 2618 memset(&node, 0, sizeof node); 2619 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2620 node.id = WPI_ID_BSS; 2621 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2622 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2623 node.action = htole32(WPI_ACTION_SET_RATE); 2624 node.antenna = WPI_ANTENNA_BOTH; 2625 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2626 if (error != 0) { 2627 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2628 return error; 2629 } 2630 2631 return 0; 2632 } 2633 2634 /* 2635 * Send a scan request to the firmware. Since this command is huge, we map it 2636 * into a mbuf instead of using the pre-allocated set of commands. 2637 */ 2638 static int 2639 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2640 { 2641 struct ieee80211com *ic = &sc->sc_ic; 2642 struct wpi_tx_ring *ring = &sc->cmdq; 2643 struct wpi_tx_desc *desc; 2644 struct wpi_tx_data *data; 2645 struct wpi_tx_cmd *cmd; 2646 struct wpi_scan_hdr *hdr; 2647 struct wpi_scan_chan *chan; 2648 struct ieee80211_frame *wh; 2649 struct ieee80211_rateset *rs; 2650 struct ieee80211_channel *c; 2651 enum ieee80211_phymode mode; 2652 uint8_t *frm; 2653 int nrates, pktlen, error; 2654 2655 desc = &ring->desc[ring->cur]; 2656 data = &ring->data[ring->cur]; 2657 2658 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2659 if (data->m == NULL) { 2660 aprint_error("%s: could not allocate mbuf for scan command\n", 2661 sc->sc_dev.dv_xname); 2662 return ENOMEM; 2663 } 2664 2665 MCLGET(data->m, M_DONTWAIT); 2666 if (!(data->m->m_flags & M_EXT)) { 2667 m_freem(data->m); 2668 data->m = NULL; 2669 aprint_error("%s: could not allocate mbuf for scan command\n", 2670 sc->sc_dev.dv_xname); 2671 return ENOMEM; 2672 } 2673 2674 cmd = mtod(data->m, struct wpi_tx_cmd *); 2675 cmd->code = WPI_CMD_SCAN; 2676 cmd->flags = 0; 2677 cmd->qid = ring->qid; 2678 cmd->idx = ring->cur; 2679 2680 hdr = (struct wpi_scan_hdr *)cmd->data; 2681 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2682 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2683 hdr->id = WPI_ID_BROADCAST; 2684 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2685 2686 /* 2687 * Move to the next channel if no packets are received within 5 msecs 2688 * after sending the probe request (this helps to reduce the duration 2689 * of active scans). 2690 */ 2691 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2692 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2693 2694 if (flags & IEEE80211_CHAN_A) { 2695 hdr->crc_threshold = htole16(1); 2696 /* send probe requests at 6Mbps */ 2697 hdr->rate = wpi_plcp_signal(12); 2698 } else { 2699 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2700 /* send probe requests at 1Mbps */ 2701 hdr->rate = wpi_plcp_signal(2); 2702 } 2703 2704 /* for directed scans, firmware inserts the essid IE itself */ 2705 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2706 hdr->essid[0].len = ic->ic_des_esslen; 2707 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2708 2709 /* 2710 * Build a probe request frame. Most of the following code is a 2711 * copy & paste of what is done in net80211. 2712 */ 2713 wh = (struct ieee80211_frame *)(hdr + 1); 2714 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2715 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2716 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2717 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2718 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2719 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2720 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2721 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2722 2723 frm = (uint8_t *)(wh + 1); 2724 2725 /* add empty essid IE (firmware generates it for directed scans) */ 2726 *frm++ = IEEE80211_ELEMID_SSID; 2727 *frm++ = 0; 2728 2729 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2730 rs = &ic->ic_sup_rates[mode]; 2731 2732 /* add supported rates IE */ 2733 *frm++ = IEEE80211_ELEMID_RATES; 2734 nrates = rs->rs_nrates; 2735 if (nrates > IEEE80211_RATE_SIZE) 2736 nrates = IEEE80211_RATE_SIZE; 2737 *frm++ = nrates; 2738 memcpy(frm, rs->rs_rates, nrates); 2739 frm += nrates; 2740 2741 /* add supported xrates IE */ 2742 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2743 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2744 *frm++ = IEEE80211_ELEMID_XRATES; 2745 *frm++ = nrates; 2746 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2747 frm += nrates; 2748 } 2749 2750 /* setup length of probe request */ 2751 hdr->paylen = htole16(frm - (uint8_t *)wh); 2752 2753 chan = (struct wpi_scan_chan *)frm; 2754 for (c = &ic->ic_channels[1]; 2755 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2756 if ((c->ic_flags & flags) != flags) 2757 continue; 2758 2759 chan->chan = ieee80211_chan2ieee(ic, c); 2760 chan->flags = 0; 2761 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2762 chan->flags |= WPI_CHAN_ACTIVE; 2763 if (ic->ic_des_esslen != 0) 2764 chan->flags |= WPI_CHAN_DIRECT; 2765 } 2766 chan->dsp_gain = 0x6e; 2767 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2768 chan->rf_gain = 0x3b; 2769 chan->active = htole16(10); 2770 chan->passive = htole16(110); 2771 } else { 2772 chan->rf_gain = 0x28; 2773 chan->active = htole16(20); 2774 chan->passive = htole16(120); 2775 } 2776 hdr->nchan++; 2777 chan++; 2778 2779 frm += sizeof (struct wpi_scan_chan); 2780 } 2781 hdr->len = htole16(frm - (uint8_t *)hdr); 2782 pktlen = frm - (uint8_t *)cmd; 2783 2784 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2785 NULL, BUS_DMA_NOWAIT); 2786 if (error) { 2787 aprint_error("%s: could not map scan command\n", 2788 sc->sc_dev.dv_xname); 2789 m_freem(data->m); 2790 data->m = NULL; 2791 return error; 2792 } 2793 2794 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2795 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2796 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2797 2798 /* kick cmd ring */ 2799 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2800 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2801 2802 return 0; /* will be notified async. of failure/success */ 2803 } 2804 2805 static int 2806 wpi_config(struct wpi_softc *sc) 2807 { 2808 struct ieee80211com *ic = &sc->sc_ic; 2809 struct ifnet *ifp = ic->ic_ifp; 2810 struct wpi_power power; 2811 struct wpi_bluetooth bluetooth; 2812 struct wpi_node_info node; 2813 int error; 2814 2815 memset(&power, 0, sizeof power); 2816 power.flags = htole32(WPI_POWER_CAM | 0x8); 2817 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2818 if (error != 0) { 2819 aprint_error("%s: could not set power mode\n", 2820 sc->sc_dev.dv_xname); 2821 return error; 2822 } 2823 2824 /* configure bluetooth coexistence */ 2825 memset(&bluetooth, 0, sizeof bluetooth); 2826 bluetooth.flags = 3; 2827 bluetooth.lead = 0xaa; 2828 bluetooth.kill = 1; 2829 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2830 0); 2831 if (error != 0) { 2832 aprint_error( 2833 "%s: could not configure bluetooth coexistence\n", 2834 sc->sc_dev.dv_xname); 2835 return error; 2836 } 2837 2838 /* configure adapter */ 2839 memset(&sc->config, 0, sizeof (struct wpi_config)); 2840 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2841 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2842 /*set default channel*/ 2843 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2844 sc->config.flags = htole32(WPI_CONFIG_TSF); 2845 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2846 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2847 WPI_CONFIG_24GHZ); 2848 } 2849 sc->config.filter = 0; 2850 switch (ic->ic_opmode) { 2851 case IEEE80211_M_STA: 2852 sc->config.mode = WPI_MODE_STA; 2853 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2854 break; 2855 case IEEE80211_M_IBSS: 2856 case IEEE80211_M_AHDEMO: 2857 sc->config.mode = WPI_MODE_IBSS; 2858 break; 2859 case IEEE80211_M_HOSTAP: 2860 sc->config.mode = WPI_MODE_HOSTAP; 2861 break; 2862 case IEEE80211_M_MONITOR: 2863 sc->config.mode = WPI_MODE_MONITOR; 2864 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2865 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2866 break; 2867 } 2868 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2869 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2870 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2871 sizeof (struct wpi_config), 0); 2872 if (error != 0) { 2873 aprint_error("%s: configure command failed\n", 2874 sc->sc_dev.dv_xname); 2875 return error; 2876 } 2877 2878 /* configuration has changed, set Tx power accordingly */ 2879 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2880 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2881 return error; 2882 } 2883 2884 /* add broadcast node */ 2885 memset(&node, 0, sizeof node); 2886 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2887 node.id = WPI_ID_BROADCAST; 2888 node.rate = wpi_plcp_signal(2); 2889 node.action = htole32(WPI_ACTION_SET_RATE); 2890 node.antenna = WPI_ANTENNA_BOTH; 2891 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2892 if (error != 0) { 2893 aprint_error("%s: could not add broadcast node\n", 2894 sc->sc_dev.dv_xname); 2895 return error; 2896 } 2897 2898 if ((error = wpi_mrr_setup(sc)) != 0) { 2899 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2900 return error; 2901 } 2902 2903 return 0; 2904 } 2905 2906 static void 2907 wpi_stop_master(struct wpi_softc *sc) 2908 { 2909 uint32_t tmp; 2910 int ntries; 2911 2912 tmp = WPI_READ(sc, WPI_RESET); 2913 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2914 2915 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2916 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2917 return; /* already asleep */ 2918 2919 for (ntries = 0; ntries < 100; ntries++) { 2920 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2921 break; 2922 DELAY(10); 2923 } 2924 if (ntries == 100) { 2925 aprint_error("%s: timeout waiting for master\n", 2926 sc->sc_dev.dv_xname); 2927 } 2928 } 2929 2930 static int 2931 wpi_power_up(struct wpi_softc *sc) 2932 { 2933 uint32_t tmp; 2934 int ntries; 2935 2936 wpi_mem_lock(sc); 2937 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2938 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2939 wpi_mem_unlock(sc); 2940 2941 for (ntries = 0; ntries < 5000; ntries++) { 2942 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2943 break; 2944 DELAY(10); 2945 } 2946 if (ntries == 5000) { 2947 aprint_error("%s: timeout waiting for NIC to power up\n", 2948 sc->sc_dev.dv_xname); 2949 return ETIMEDOUT; 2950 } 2951 return 0; 2952 } 2953 2954 static int 2955 wpi_reset(struct wpi_softc *sc) 2956 { 2957 uint32_t tmp; 2958 int ntries; 2959 2960 /* clear any pending interrupts */ 2961 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2962 2963 tmp = WPI_READ(sc, WPI_PLL_CTL); 2964 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2965 2966 tmp = WPI_READ(sc, WPI_CHICKEN); 2967 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2968 2969 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2970 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2971 2972 /* wait for clock stabilization */ 2973 for (ntries = 0; ntries < 1000; ntries++) { 2974 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2975 break; 2976 DELAY(10); 2977 } 2978 if (ntries == 1000) { 2979 aprint_error("%s: timeout waiting for clock stabilization\n", 2980 sc->sc_dev.dv_xname); 2981 return ETIMEDOUT; 2982 } 2983 2984 /* initialize EEPROM */ 2985 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2986 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2987 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 2988 return EIO; 2989 } 2990 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2991 2992 return 0; 2993 } 2994 2995 static void 2996 wpi_hw_config(struct wpi_softc *sc) 2997 { 2998 uint32_t rev, hw; 2999 3000 /* voodoo from the reference driver */ 3001 hw = WPI_READ(sc, WPI_HWCONFIG); 3002 3003 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3004 rev = PCI_REVISION(rev); 3005 if ((rev & 0xc0) == 0x40) 3006 hw |= WPI_HW_ALM_MB; 3007 else if (!(rev & 0x80)) 3008 hw |= WPI_HW_ALM_MM; 3009 3010 if (sc->cap == 0x80) 3011 hw |= WPI_HW_SKU_MRC; 3012 3013 hw &= ~WPI_HW_REV_D; 3014 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3015 hw |= WPI_HW_REV_D; 3016 3017 if (sc->type > 1) 3018 hw |= WPI_HW_TYPE_B; 3019 3020 DPRINTF(("setting h/w config %x\n", hw)); 3021 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3022 } 3023 3024 static int 3025 wpi_init(struct ifnet *ifp) 3026 { 3027 struct wpi_softc *sc = ifp->if_softc; 3028 struct ieee80211com *ic = &sc->sc_ic; 3029 uint32_t tmp; 3030 int qid, ntries, error; 3031 3032 wpi_stop(ifp,1); 3033 (void)wpi_reset(sc); 3034 3035 wpi_mem_lock(sc); 3036 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3037 DELAY(20); 3038 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3039 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3040 wpi_mem_unlock(sc); 3041 3042 (void)wpi_power_up(sc); 3043 wpi_hw_config(sc); 3044 3045 /* init Rx ring */ 3046 wpi_mem_lock(sc); 3047 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3048 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3049 offsetof(struct wpi_shared, next)); 3050 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3051 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3052 wpi_mem_unlock(sc); 3053 3054 /* init Tx rings */ 3055 wpi_mem_lock(sc); 3056 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3057 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3058 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3059 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3060 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3061 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3062 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3063 3064 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3065 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3066 3067 for (qid = 0; qid < 6; qid++) { 3068 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3069 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3070 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3071 } 3072 wpi_mem_unlock(sc); 3073 3074 /* clear "radio off" and "disable command" bits (reversed logic) */ 3075 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3076 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3077 3078 /* clear any pending interrupts */ 3079 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3080 /* enable interrupts */ 3081 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3082 3083 /* not sure why/if this is necessary... */ 3084 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3085 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3086 3087 if ((error = wpi_load_firmware(sc)) != 0) { 3088 aprint_error("%s: could not load firmware\n", sc->sc_dev.dv_xname); 3089 goto fail1; 3090 } 3091 3092 /* wait for thermal sensors to calibrate */ 3093 for (ntries = 0; ntries < 1000; ntries++) { 3094 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3095 break; 3096 DELAY(10); 3097 } 3098 if (ntries == 1000) { 3099 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 3100 sc->sc_dev.dv_xname); 3101 error = ETIMEDOUT; 3102 goto fail1; 3103 } 3104 3105 DPRINTF(("temperature %d\n", sc->temp)); 3106 3107 if ((error = wpi_config(sc)) != 0) { 3108 aprint_error("%s: could not configure device\n", 3109 sc->sc_dev.dv_xname); 3110 goto fail1; 3111 } 3112 3113 ifp->if_flags &= ~IFF_OACTIVE; 3114 ifp->if_flags |= IFF_RUNNING; 3115 3116 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3117 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3118 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3119 } 3120 else 3121 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3122 3123 return 0; 3124 3125 fail1: wpi_stop(ifp, 1); 3126 return error; 3127 } 3128 3129 3130 static void 3131 wpi_stop(struct ifnet *ifp, int disable) 3132 { 3133 struct wpi_softc *sc = ifp->if_softc; 3134 struct ieee80211com *ic = &sc->sc_ic; 3135 uint32_t tmp; 3136 int ac; 3137 3138 ifp->if_timer = sc->sc_tx_timer = 0; 3139 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3140 3141 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3142 3143 /* disable interrupts */ 3144 WPI_WRITE(sc, WPI_MASK, 0); 3145 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3146 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3147 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3148 3149 wpi_mem_lock(sc); 3150 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3151 wpi_mem_unlock(sc); 3152 3153 /* reset all Tx rings */ 3154 for (ac = 0; ac < 4; ac++) 3155 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3156 wpi_reset_tx_ring(sc, &sc->cmdq); 3157 3158 /* reset Rx ring */ 3159 wpi_reset_rx_ring(sc, &sc->rxq); 3160 3161 wpi_mem_lock(sc); 3162 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3163 wpi_mem_unlock(sc); 3164 3165 DELAY(5); 3166 3167 wpi_stop_master(sc); 3168 3169 tmp = WPI_READ(sc, WPI_RESET); 3170 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3171 } 3172
Indexes created Thu Oct 02 01:09:59 GMT 2025