if_wpi.c revision 1.17.4.6
1 /* $NetBSD: if_wpi.c,v 1.17.4.6 2007/09/04 20:49:34 degroote Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007 5 * Damien Bergamini <damien.bergamini (at) free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __KERNEL_RCSID(0, "$NetBSD: if_wpi.c,v 1.17.4.6 2007/09/04 20:49:34 degroote Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 #include "bpfilter.h" 28 29 #include <sys/param.h> 30 #include <sys/sockio.h> 31 #include <sys/sysctl.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/conf.h> 38 #include <sys/kauth.h> 39 #include <sys/callout.h> 40 41 #include <machine/bus.h> 42 #include <machine/endian.h> 43 #include <machine/intr.h> 44 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcidevs.h> 48 49 #if NBPFILTER > 0 50 #include <net/bpf.h> 51 #endif 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 68 #include <dev/firmload.h> 69 70 #include <dev/pci/if_wpireg.h> 71 #include <dev/pci/if_wpivar.h> 72 73 #ifdef WPI_DEBUG 74 #define DPRINTF(x) if (wpi_debug > 0) printf x 75 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 76 int wpi_debug = 1; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n, x) 80 #endif 81 82 /* 83 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 84 */ 85 static const struct ieee80211_rateset wpi_rateset_11a = 86 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 87 88 static const struct ieee80211_rateset wpi_rateset_11b = 89 { 4, { 2, 4, 11, 22 } }; 90 91 static const struct ieee80211_rateset wpi_rateset_11g = 92 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 93 94 static int wpi_match(struct device *, struct cfdata *, void *); 95 static void wpi_attach(struct device *, struct device *, void *); 96 static int wpi_detach(struct device*, int); 97 static pnp_status_t wpi_power(device_t, pnp_request_t, void *); 98 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 99 void **, bus_size_t, bus_size_t, int); 100 static void wpi_dma_contig_free(struct wpi_dma_info *); 101 static int wpi_alloc_shared(struct wpi_softc *); 102 static void wpi_free_shared(struct wpi_softc *); 103 static int wpi_alloc_fwmem(struct wpi_softc *); 104 static void wpi_free_fwmem(struct wpi_softc *); 105 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 106 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 107 static int wpi_alloc_rpool(struct wpi_softc *); 108 static void wpi_free_rpool(struct wpi_softc *); 109 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 110 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 111 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 112 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 113 int); 114 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 115 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 116 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 117 static void wpi_newassoc(struct ieee80211_node *, int); 118 static int wpi_media_change(struct ifnet *); 119 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 120 static void wpi_fix_channel(struct ieee80211com *, struct mbuf *); 121 static void wpi_mem_lock(struct wpi_softc *); 122 static void wpi_mem_unlock(struct wpi_softc *); 123 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 124 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 125 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 126 const uint32_t *, int); 127 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 128 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 129 static int wpi_load_firmware(struct wpi_softc *); 130 static void wpi_calib_timeout(void *); 131 static void wpi_iter_func(void *, struct ieee80211_node *); 132 static void wpi_power_calibration(struct wpi_softc *, int); 133 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 134 struct wpi_rx_data *); 135 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 136 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 137 static void wpi_notif_intr(struct wpi_softc *); 138 static int wpi_intr(void *); 139 static void wpi_read_eeprom(struct wpi_softc *); 140 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 141 static void wpi_read_eeprom_group(struct wpi_softc *, int); 142 static uint8_t wpi_plcp_signal(int); 143 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 144 struct ieee80211_node *, int); 145 static void wpi_start(struct ifnet *); 146 static void wpi_watchdog(struct ifnet *); 147 static int wpi_ioctl(struct ifnet *, u_long, void *); 148 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 149 static int wpi_wme_update(struct ieee80211com *); 150 static int wpi_mrr_setup(struct wpi_softc *); 151 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 152 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 153 static int wpi_set_txpower(struct wpi_softc *, 154 struct ieee80211_channel *, int); 155 static int wpi_get_power_index(struct wpi_softc *, 156 struct wpi_power_group *, struct ieee80211_channel *, int); 157 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 158 static int wpi_auth(struct wpi_softc *); 159 static int wpi_scan(struct wpi_softc *, uint16_t); 160 static int wpi_config(struct wpi_softc *); 161 static void wpi_stop_master(struct wpi_softc *); 162 static int wpi_power_up(struct wpi_softc *); 163 static int wpi_reset(struct wpi_softc *); 164 static void wpi_hw_config(struct wpi_softc *); 165 static int wpi_init(struct ifnet *); 166 static void wpi_stop(struct ifnet *, int); 167 168 CFATTACH_DECL(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 169 wpi_detach, NULL); 170 171 static int 172 wpi_match(struct device *parent, struct cfdata *match __unused, void *aux) 173 { 174 struct pci_attach_args *pa = aux; 175 176 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 177 return 0; 178 179 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 180 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 181 return 1; 182 183 return 0; 184 } 185 186 /* Base Address Register */ 187 #define WPI_PCI_BAR0 0x10 188 189 static void 190 wpi_attach(struct device *parent __unused, struct device *self, void *aux) 191 { 192 struct wpi_softc *sc = (struct wpi_softc *)self; 193 struct ieee80211com *ic = &sc->sc_ic; 194 struct ifnet *ifp = &sc->sc_ec.ec_if; 195 struct pci_attach_args *pa = aux; 196 const char *intrstr; 197 char devinfo[256]; 198 bus_space_tag_t memt; 199 bus_space_handle_t memh; 200 pci_intr_handle_t ih; 201 pcireg_t data; 202 int error, ac, revision; 203 204 sc->sc_pct = pa->pa_pc; 205 sc->sc_pcitag = pa->pa_tag; 206 207 callout_init(&sc->calib_to, 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 /* set power handler */ 356 if (pnp_register(self, wpi_power) != PNP_STATUS_SUCCESS) 357 aprint_error("%s: couldn't establish power handler\n", 358 device_xname(self)); 359 360 #if NBPFILTER > 0 361 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 362 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 363 &sc->sc_drvbpf); 364 365 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 366 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 367 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 368 369 sc->sc_txtap_len = sizeof sc->sc_txtapu; 370 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 371 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 372 #endif 373 374 ieee80211_announce(ic); 375 376 return; 377 378 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 379 fail3: while (--ac >= 0) 380 wpi_free_tx_ring(sc, &sc->txq[ac]); 381 wpi_free_rpool(sc); 382 fail2: wpi_free_shared(sc); 383 fail1: wpi_free_fwmem(sc); 384 } 385 386 static int 387 wpi_detach(struct device* self, int flags __unused) 388 { 389 struct wpi_softc *sc = (struct wpi_softc *)self; 390 struct ifnet *ifp = sc->sc_ic.ic_ifp; 391 int ac; 392 393 wpi_stop(ifp, 1); 394 395 #if NBPFILTER > 0 396 if (ifp != NULL) 397 bpfdetach(ifp); 398 #endif 399 ieee80211_ifdetach(&sc->sc_ic); 400 if (ifp != NULL) 401 if_detach(ifp); 402 403 for (ac = 0; ac < 4; ac++) 404 wpi_free_tx_ring(sc, &sc->txq[ac]); 405 wpi_free_tx_ring(sc, &sc->cmdq); 406 wpi_free_rx_ring(sc, &sc->rxq); 407 wpi_free_rpool(sc); 408 wpi_free_shared(sc); 409 410 if (sc->sc_ih != NULL) { 411 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 412 sc->sc_ih = NULL; 413 } 414 415 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 416 417 return 0; 418 } 419 420 static pnp_status_t 421 wpi_power(device_t dv, pnp_request_t req, void *opaque) 422 { 423 struct wpi_softc *sc = (struct wpi_softc *)dv; 424 425 return pci_net_generic_power(dv, req, opaque, sc->sc_pct, sc->sc_pcitag, 426 &sc->sc_pciconf, sc->sc_ic.ic_ifp); 427 } 428 429 static int 430 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 431 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 432 { 433 int nsegs, error; 434 435 dma->tag = tag; 436 dma->size = size; 437 438 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 439 if (error != 0) 440 goto fail; 441 442 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 443 flags); 444 if (error != 0) 445 goto fail; 446 447 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 448 if (error != 0) 449 goto fail; 450 451 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 452 if (error != 0) 453 goto fail; 454 455 memset(dma->vaddr, 0, size); 456 457 dma->paddr = dma->map->dm_segs[0].ds_addr; 458 if (kvap != NULL) 459 *kvap = dma->vaddr; 460 461 return 0; 462 463 fail: wpi_dma_contig_free(dma); 464 return error; 465 } 466 467 static void 468 wpi_dma_contig_free(struct wpi_dma_info *dma) 469 { 470 if (dma->map != NULL) { 471 if (dma->vaddr != NULL) { 472 bus_dmamap_unload(dma->tag, dma->map); 473 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 474 bus_dmamem_free(dma->tag, &dma->seg, 1); 475 dma->vaddr = NULL; 476 } 477 bus_dmamap_destroy(dma->tag, dma->map); 478 dma->map = NULL; 479 } 480 } 481 482 /* 483 * Allocate a shared page between host and NIC. 484 */ 485 static int 486 wpi_alloc_shared(struct wpi_softc *sc) 487 { 488 int error; 489 /* must be aligned on a 4K-page boundary */ 490 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 491 (void **)&sc->shared, sizeof (struct wpi_shared), 492 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 493 if (error != 0) 494 aprint_error( 495 "%s: could not allocate shared area DMA memory\n", 496 sc->sc_dev.dv_xname); 497 498 return error; 499 } 500 501 static void 502 wpi_free_shared(struct wpi_softc *sc) 503 { 504 wpi_dma_contig_free(&sc->shared_dma); 505 } 506 507 /* 508 * Allocate DMA-safe memory for firmware transfer. 509 */ 510 static int 511 wpi_alloc_fwmem(struct wpi_softc *sc) 512 { 513 int error; 514 /* allocate enough contiguous space to store text and data */ 515 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 516 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 517 BUS_DMA_NOWAIT); 518 519 if (error != 0) 520 aprint_error( 521 "%s: could not allocate firmware transfer area" 522 "DMA memory\n", sc->sc_dev.dv_xname); 523 return error; 524 } 525 526 static void 527 wpi_free_fwmem(struct wpi_softc *sc) 528 { 529 wpi_dma_contig_free(&sc->fw_dma); 530 } 531 532 533 static struct wpi_rbuf * 534 wpi_alloc_rbuf(struct wpi_softc *sc) 535 { 536 struct wpi_rbuf *rbuf; 537 538 rbuf = SLIST_FIRST(&sc->rxq.freelist); 539 if (rbuf == NULL) 540 return NULL; 541 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 542 sc->rxq.nb_free_entries --; 543 544 return rbuf; 545 } 546 547 /* 548 * This is called automatically by the network stack when the mbuf to which our 549 * Rx buffer is attached is freed. 550 */ 551 static void 552 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 553 { 554 struct wpi_rbuf *rbuf = arg; 555 struct wpi_softc *sc = rbuf->sc; 556 int s; 557 558 /* put the buffer back in the free list */ 559 560 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 561 sc->rxq.nb_free_entries ++; 562 563 if (__predict_true(m != NULL)) { 564 s = splvm(); 565 pool_cache_put(&mbpool_cache, m); 566 splx(s); 567 } 568 } 569 570 static int 571 wpi_alloc_rpool(struct wpi_softc *sc) 572 { 573 struct wpi_rx_ring *ring = &sc->rxq; 574 struct wpi_rbuf *rbuf; 575 int i, error; 576 577 /* allocate a big chunk of DMA'able memory.. */ 578 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 579 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 580 if (error != 0) { 581 aprint_normal("%s: could not allocate Rx buffers DMA memory\n", 582 sc->sc_dev.dv_xname); 583 return error; 584 } 585 586 /* ..and split it into 3KB chunks */ 587 SLIST_INIT(&ring->freelist); 588 for (i = 0; i < WPI_RBUF_COUNT; i++) { 589 rbuf = &ring->rbuf[i]; 590 rbuf->sc = sc; /* backpointer for callbacks */ 591 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 592 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 593 594 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 595 } 596 597 ring->nb_free_entries = WPI_RBUF_COUNT; 598 return 0; 599 } 600 601 static void 602 wpi_free_rpool(struct wpi_softc *sc) 603 { 604 wpi_dma_contig_free(&sc->rxq.buf_dma); 605 } 606 607 static int 608 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 609 { 610 struct wpi_rx_data *data; 611 struct wpi_rbuf *rbuf; 612 int i, error; 613 614 ring->cur = 0; 615 616 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 617 (void **)&ring->desc, 618 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 619 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 620 if (error != 0) { 621 aprint_error("%s: could not allocate rx ring DMA memory\n", 622 sc->sc_dev.dv_xname); 623 goto fail; 624 } 625 626 /* 627 * Setup Rx buffers. 628 */ 629 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 630 data = &ring->data[i]; 631 632 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 633 if (data->m == NULL) { 634 aprint_error("%s: could not allocate rx mbuf\n", 635 sc->sc_dev.dv_xname); 636 error = ENOMEM; 637 goto fail; 638 } 639 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 640 m_freem(data->m); 641 data->m = NULL; 642 aprint_error("%s: could not allocate rx cluster\n", 643 sc->sc_dev.dv_xname); 644 error = ENOMEM; 645 goto fail; 646 } 647 /* attach Rx buffer to mbuf */ 648 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 649 rbuf); 650 data->m->m_flags |= M_EXT_RW; 651 652 ring->desc[i] = htole32(rbuf->paddr); 653 } 654 655 return 0; 656 657 fail: wpi_free_rx_ring(sc, ring); 658 return error; 659 } 660 661 static void 662 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 663 { 664 int ntries; 665 666 wpi_mem_lock(sc); 667 668 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 669 for (ntries = 0; ntries < 100; ntries++) { 670 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 671 break; 672 DELAY(10); 673 } 674 #ifdef WPI_DEBUG 675 if (ntries == 100 && wpi_debug > 0) 676 aprint_error("%s: timeout resetting Rx ring\n", 677 sc->sc_dev.dv_xname); 678 #endif 679 wpi_mem_unlock(sc); 680 681 ring->cur = 0; 682 } 683 684 static void 685 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 686 { 687 int i; 688 689 wpi_dma_contig_free(&ring->desc_dma); 690 691 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 692 if (ring->data[i].m != NULL) 693 m_freem(ring->data[i].m); 694 } 695 } 696 697 static int 698 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 699 int qid) 700 { 701 struct wpi_tx_data *data; 702 int i, error; 703 704 ring->qid = qid; 705 ring->count = count; 706 ring->queued = 0; 707 ring->cur = 0; 708 709 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 710 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 711 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 712 if (error != 0) { 713 aprint_error("%s: could not allocate tx ring DMA memory\n", 714 sc->sc_dev.dv_xname); 715 goto fail; 716 } 717 718 /* update shared page with ring's base address */ 719 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 720 721 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 722 (void **)&ring->cmd, 723 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 724 if (error != 0) { 725 aprint_error("%s: could not allocate tx cmd DMA memory\n", 726 sc->sc_dev.dv_xname); 727 goto fail; 728 } 729 730 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 731 M_NOWAIT); 732 if (ring->data == NULL) { 733 aprint_error("%s: could not allocate tx data slots\n", 734 sc->sc_dev.dv_xname); 735 goto fail; 736 } 737 738 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 739 740 for (i = 0; i < count; i++) { 741 data = &ring->data[i]; 742 743 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 744 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 745 &data->map); 746 if (error != 0) { 747 aprint_error("%s: could not create tx buf DMA map\n", 748 sc->sc_dev.dv_xname); 749 goto fail; 750 } 751 } 752 753 return 0; 754 755 fail: wpi_free_tx_ring(sc, ring); 756 return error; 757 } 758 759 static void 760 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 761 { 762 struct wpi_tx_data *data; 763 int i, ntries; 764 765 wpi_mem_lock(sc); 766 767 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 768 for (ntries = 0; ntries < 100; ntries++) { 769 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 770 break; 771 DELAY(10); 772 } 773 #ifdef WPI_DEBUG 774 if (ntries == 100 && wpi_debug > 0) { 775 aprint_error("%s: timeout resetting Tx ring %d\n", 776 sc->sc_dev.dv_xname, ring->qid); 777 } 778 #endif 779 wpi_mem_unlock(sc); 780 781 for (i = 0; i < ring->count; i++) { 782 data = &ring->data[i]; 783 784 if (data->m != NULL) { 785 bus_dmamap_unload(sc->sc_dmat, data->map); 786 m_freem(data->m); 787 data->m = NULL; 788 } 789 } 790 791 ring->queued = 0; 792 ring->cur = 0; 793 } 794 795 static void 796 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 797 { 798 struct wpi_tx_data *data; 799 int i; 800 801 wpi_dma_contig_free(&ring->desc_dma); 802 wpi_dma_contig_free(&ring->cmd_dma); 803 804 if (ring->data != NULL) { 805 for (i = 0; i < ring->count; i++) { 806 data = &ring->data[i]; 807 808 if (data->m != NULL) { 809 bus_dmamap_unload(sc->sc_dmat, data->map); 810 m_freem(data->m); 811 } 812 } 813 free(ring->data, M_DEVBUF); 814 } 815 } 816 817 /*ARGUSED*/ 818 static struct ieee80211_node * 819 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 820 { 821 struct wpi_node *wn; 822 823 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 824 825 if (wn != NULL) 826 memset(wn, 0, sizeof (struct wpi_node)); 827 return (struct ieee80211_node *)wn; 828 } 829 830 static void 831 wpi_newassoc(struct ieee80211_node *ni, int isnew) 832 { 833 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 834 int i; 835 836 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 837 838 /* set rate to some reasonable initial value */ 839 for (i = ni->ni_rates.rs_nrates - 1; 840 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 841 i--); 842 ni->ni_txrate = i; 843 } 844 845 static int 846 wpi_media_change(struct ifnet *ifp) 847 { 848 int error; 849 850 error = ieee80211_media_change(ifp); 851 if (error != ENETRESET) 852 return error; 853 854 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 855 wpi_init(ifp); 856 857 return 0; 858 } 859 860 static int 861 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 862 { 863 struct ifnet *ifp = ic->ic_ifp; 864 struct wpi_softc *sc = ifp->if_softc; 865 struct ieee80211_node *ni; 866 int error; 867 868 callout_stop(&sc->calib_to); 869 870 switch (nstate) { 871 case IEEE80211_S_SCAN: 872 873 if (sc->is_scanning) 874 break; 875 876 sc->is_scanning = true; 877 ieee80211_node_table_reset(&ic->ic_scan); 878 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 879 880 /* make the link LED blink while we're scanning */ 881 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 882 883 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 884 aprint_error("%s: could not initiate scan\n", 885 sc->sc_dev.dv_xname); 886 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 887 return error; 888 } 889 890 ic->ic_state = nstate; 891 return 0; 892 893 case IEEE80211_S_ASSOC: 894 if (ic->ic_state != IEEE80211_S_RUN) 895 break; 896 /* FALLTHROUGH */ 897 case IEEE80211_S_AUTH: 898 sc->config.associd = 0; 899 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 900 if ((error = wpi_auth(sc)) != 0) { 901 aprint_error("%s: could not send authentication request\n", 902 sc->sc_dev.dv_xname); 903 return error; 904 } 905 break; 906 907 case IEEE80211_S_RUN: 908 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 909 /* link LED blinks while monitoring */ 910 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 911 break; 912 } 913 914 ni = ic->ic_bss; 915 916 if (ic->ic_opmode != IEEE80211_M_STA) { 917 (void) wpi_auth(sc); /* XXX */ 918 wpi_setup_beacon(sc, ni); 919 } 920 921 wpi_enable_tsf(sc, ni); 922 923 /* update adapter's configuration */ 924 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 925 /* short preamble/slot time are negotiated when associating */ 926 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 927 WPI_CONFIG_SHSLOT); 928 if (ic->ic_flags & IEEE80211_F_SHSLOT) 929 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 930 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 931 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 932 sc->config.filter |= htole32(WPI_FILTER_BSS); 933 if (ic->ic_opmode != IEEE80211_M_STA) 934 sc->config.filter |= htole32(WPI_FILTER_BEACON); 935 936 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 937 938 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 939 sc->config.flags)); 940 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 941 sizeof (struct wpi_config), 1); 942 if (error != 0) { 943 aprint_error("%s: could not update configuration\n", 944 sc->sc_dev.dv_xname); 945 return error; 946 } 947 948 /* configuration has changed, set Tx power accordingly */ 949 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 950 aprint_error("%s: could not set Tx power\n", 951 sc->sc_dev.dv_xname); 952 return error; 953 } 954 955 if (ic->ic_opmode == IEEE80211_M_STA) { 956 /* fake a join to init the tx rate */ 957 wpi_newassoc(ni, 1); 958 } 959 960 /* start periodic calibration timer */ 961 sc->calib_cnt = 0; 962 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 963 964 /* link LED always on while associated */ 965 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 966 break; 967 968 case IEEE80211_S_INIT: 969 sc->is_scanning = false; 970 break; 971 } 972 973 return sc->sc_newstate(ic, nstate, arg); 974 } 975 976 /* 977 * XXX: Hack to set the current channel to the value advertised in beacons or 978 * probe responses. Only used during AP detection. 979 * XXX: Duplicated from if_iwi.c 980 */ 981 static void 982 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 983 { 984 struct ieee80211_frame *wh; 985 uint8_t subtype; 986 uint8_t *frm, *efrm; 987 988 wh = mtod(m, struct ieee80211_frame *); 989 990 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 991 return; 992 993 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 994 995 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 996 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 997 return; 998 999 frm = (uint8_t *)(wh + 1); 1000 efrm = mtod(m, uint8_t *) + m->m_len; 1001 1002 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1003 while (frm < efrm) { 1004 if (*frm == IEEE80211_ELEMID_DSPARMS) 1005 #if IEEE80211_CHAN_MAX < 255 1006 if (frm[2] <= IEEE80211_CHAN_MAX) 1007 #endif 1008 ic->ic_curchan = &ic->ic_channels[frm[2]]; 1009 1010 frm += frm[1] + 2; 1011 } 1012 } 1013 1014 /* 1015 * Grab exclusive access to NIC memory. 1016 */ 1017 static void 1018 wpi_mem_lock(struct wpi_softc *sc) 1019 { 1020 uint32_t tmp; 1021 int ntries; 1022 1023 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1024 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1025 1026 /* spin until we actually get the lock */ 1027 for (ntries = 0; ntries < 1000; ntries++) { 1028 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1029 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1030 break; 1031 DELAY(10); 1032 } 1033 if (ntries == 1000) 1034 aprint_error("%s: could not lock memory\n", sc->sc_dev.dv_xname); 1035 } 1036 1037 /* 1038 * Release lock on NIC memory. 1039 */ 1040 static void 1041 wpi_mem_unlock(struct wpi_softc *sc) 1042 { 1043 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1044 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1045 } 1046 1047 static uint32_t 1048 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1049 { 1050 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1051 return WPI_READ(sc, WPI_READ_MEM_DATA); 1052 } 1053 1054 static void 1055 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1056 { 1057 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1058 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1059 } 1060 1061 static void 1062 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1063 const uint32_t *data, int wlen) 1064 { 1065 for (; wlen > 0; wlen--, data++, addr += 4) 1066 wpi_mem_write(sc, addr, *data); 1067 } 1068 1069 1070 /* 1071 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1072 * instead of using the traditional bit-bang method. 1073 */ 1074 static int 1075 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1076 { 1077 uint8_t *out = data; 1078 uint32_t val; 1079 int ntries; 1080 1081 wpi_mem_lock(sc); 1082 for (; len > 0; len -= 2, addr++) { 1083 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1084 1085 for (ntries = 0; ntries < 10; ntries++) { 1086 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1087 WPI_EEPROM_READY) 1088 break; 1089 DELAY(5); 1090 } 1091 if (ntries == 10) { 1092 aprint_error("%s: could not read EEPROM\n", 1093 sc->sc_dev.dv_xname); 1094 return ETIMEDOUT; 1095 } 1096 *out++ = val >> 16; 1097 if (len > 1) 1098 *out++ = val >> 24; 1099 } 1100 wpi_mem_unlock(sc); 1101 1102 return 0; 1103 } 1104 1105 /* 1106 * The firmware boot code is small and is intended to be copied directly into 1107 * the NIC internal memory. 1108 */ 1109 int 1110 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1111 { 1112 int ntries; 1113 1114 size /= sizeof (uint32_t); 1115 1116 wpi_mem_lock(sc); 1117 1118 /* copy microcode image into NIC memory */ 1119 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1120 (const uint32_t *)ucode, size); 1121 1122 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1123 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1124 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1125 1126 /* run microcode */ 1127 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1128 1129 /* wait for transfer to complete */ 1130 for (ntries = 0; ntries < 1000; ntries++) { 1131 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1132 break; 1133 DELAY(10); 1134 } 1135 if (ntries == 1000) { 1136 wpi_mem_unlock(sc); 1137 printf("%s: could not load boot firmware\n", 1138 sc->sc_dev.dv_xname); 1139 return ETIMEDOUT; 1140 } 1141 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1142 1143 wpi_mem_unlock(sc); 1144 1145 return 0; 1146 } 1147 1148 static int 1149 wpi_load_firmware(struct wpi_softc *sc) 1150 { 1151 struct wpi_dma_info *dma = &sc->fw_dma; 1152 struct wpi_firmware_hdr hdr; 1153 const uint8_t *init_text, *init_data, *main_text, *main_data; 1154 const uint8_t *boot_text; 1155 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1156 uint32_t boot_textsz; 1157 firmware_handle_t fw; 1158 u_char *dfw; 1159 size_t size; 1160 int error; 1161 1162 /* load firmware image from disk */ 1163 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1164 aprint_error("%s: could not read firmware file\n", 1165 sc->sc_dev.dv_xname); 1166 goto fail1; 1167 } 1168 1169 size = firmware_get_size(fw); 1170 1171 /* extract firmware header information */ 1172 if (size < sizeof (struct wpi_firmware_hdr)) { 1173 aprint_error("%s: truncated firmware header: %zu bytes\n", 1174 sc->sc_dev.dv_xname, size); 1175 error = EINVAL; 1176 goto fail2; 1177 } 1178 1179 if ((error = firmware_read(fw, 0, &hdr, 1180 sizeof (struct wpi_firmware_hdr))) != 0) { 1181 aprint_error("%s: can't get firmware header\n", 1182 sc->sc_dev.dv_xname); 1183 goto fail2; 1184 } 1185 1186 main_textsz = le32toh(hdr.main_textsz); 1187 main_datasz = le32toh(hdr.main_datasz); 1188 init_textsz = le32toh(hdr.init_textsz); 1189 init_datasz = le32toh(hdr.init_datasz); 1190 boot_textsz = le32toh(hdr.boot_textsz); 1191 1192 /* sanity-check firmware segments sizes */ 1193 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1194 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1195 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1196 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1197 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1198 (boot_textsz & 3) != 0) { 1199 printf("%s: invalid firmware header\n", sc->sc_dev.dv_xname); 1200 error = EINVAL; 1201 goto fail2; 1202 } 1203 1204 /* check that all firmware segments are present */ 1205 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1206 main_datasz + init_textsz + init_datasz + boot_textsz) { 1207 aprint_error("%s: firmware file too short: %zu bytes\n", 1208 sc->sc_dev.dv_xname, size); 1209 error = EINVAL; 1210 goto fail2; 1211 } 1212 1213 dfw = firmware_malloc(size); 1214 if (dfw == NULL) { 1215 aprint_error("%s: not enough memory to stock firmware\n", 1216 sc->sc_dev.dv_xname); 1217 error = ENOMEM; 1218 goto fail2; 1219 } 1220 1221 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1222 aprint_error("%s: can't get firmware\n", 1223 sc->sc_dev.dv_xname); 1224 goto fail2; 1225 } 1226 1227 /* get pointers to firmware segments */ 1228 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1229 main_data = main_text + main_textsz; 1230 init_text = main_data + main_datasz; 1231 init_data = init_text + init_textsz; 1232 boot_text = init_data + init_datasz; 1233 1234 /* copy initialization images into pre-allocated DMA-safe memory */ 1235 memcpy(dma->vaddr, init_data, init_datasz); 1236 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1237 1238 /* tell adapter where to find initialization images */ 1239 wpi_mem_lock(sc); 1240 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1241 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1242 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1243 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1244 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1245 wpi_mem_unlock(sc); 1246 1247 /* load firmware boot code */ 1248 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1249 printf("%s: could not load boot firmware\n", 1250 sc->sc_dev.dv_xname); 1251 goto fail3; 1252 } 1253 1254 /* now press "execute" ;-) */ 1255 WPI_WRITE(sc, WPI_RESET, 0); 1256 1257 /* ..and wait at most one second for adapter to initialize */ 1258 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1259 /* this isn't what was supposed to happen.. */ 1260 aprint_error("%s: timeout waiting for adapter to initialize\n", 1261 sc->sc_dev.dv_xname); 1262 } 1263 1264 /* copy runtime images into pre-allocated DMA-safe memory */ 1265 memcpy(dma->vaddr, main_data, main_datasz); 1266 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1267 1268 /* tell adapter where to find runtime images */ 1269 wpi_mem_lock(sc); 1270 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1271 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1272 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1273 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1274 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1275 wpi_mem_unlock(sc); 1276 1277 /* wait at most one second for second alive notification */ 1278 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1279 /* this isn't what was supposed to happen.. */ 1280 printf("%s: timeout waiting for adapter to initialize\n", 1281 sc->sc_dev.dv_xname); 1282 } 1283 1284 1285 fail3: firmware_free(dfw,size); 1286 fail2: firmware_close(fw); 1287 fail1: return error; 1288 } 1289 1290 static void 1291 wpi_calib_timeout(void *arg) 1292 { 1293 struct wpi_softc *sc = arg; 1294 struct ieee80211com *ic = &sc->sc_ic; 1295 int temp, s; 1296 1297 /* automatic rate control triggered every 500ms */ 1298 if (ic->ic_fixed_rate == -1) { 1299 s = splnet(); 1300 if (ic->ic_opmode == IEEE80211_M_STA) 1301 wpi_iter_func(sc, ic->ic_bss); 1302 else 1303 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1304 splx(s); 1305 } 1306 1307 /* update sensor data */ 1308 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1309 1310 /* automatic power calibration every 60s */ 1311 if (++sc->calib_cnt >= 120) { 1312 wpi_power_calibration(sc, temp); 1313 sc->calib_cnt = 0; 1314 } 1315 1316 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 1317 } 1318 1319 static void 1320 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1321 { 1322 struct wpi_softc *sc = arg; 1323 struct wpi_node *wn = (struct wpi_node *)ni; 1324 1325 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1326 } 1327 1328 /* 1329 * This function is called periodically (every 60 seconds) to adjust output 1330 * power to temperature changes. 1331 */ 1332 void 1333 wpi_power_calibration(struct wpi_softc *sc, int temp) 1334 { 1335 /* sanity-check read value */ 1336 if (temp < -260 || temp > 25) { 1337 /* this can't be correct, ignore */ 1338 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1339 return; 1340 } 1341 1342 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1343 1344 /* adjust Tx power if need be */ 1345 if (abs(temp - sc->temp) <= 6) 1346 return; 1347 1348 sc->temp = temp; 1349 1350 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1351 /* just warn, too bad for the automatic calibration... */ 1352 aprint_error("%s: could not adjust Tx power\n", 1353 sc->sc_dev.dv_xname); 1354 } 1355 } 1356 1357 static void 1358 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1359 struct wpi_rx_data *data) 1360 { 1361 struct ieee80211com *ic = &sc->sc_ic; 1362 struct ifnet *ifp = ic->ic_ifp; 1363 struct wpi_rx_ring *ring = &sc->rxq; 1364 struct wpi_rx_stat *stat; 1365 struct wpi_rx_head *head; 1366 struct wpi_rx_tail *tail; 1367 struct wpi_rbuf *rbuf; 1368 struct ieee80211_frame *wh; 1369 struct ieee80211_node *ni; 1370 struct mbuf *m, *mnew; 1371 int data_off ; 1372 1373 stat = (struct wpi_rx_stat *)(desc + 1); 1374 1375 if (stat->len > WPI_STAT_MAXLEN) { 1376 aprint_error("%s: invalid rx statistic header\n", 1377 sc->sc_dev.dv_xname); 1378 ifp->if_ierrors++; 1379 return; 1380 } 1381 1382 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1383 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1384 1385 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1386 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1387 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1388 le64toh(tail->tstamp))); 1389 1390 /* 1391 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1392 * to radiotap in monitor mode). 1393 */ 1394 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1395 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1396 ifp->if_ierrors++; 1397 return; 1398 } 1399 1400 /* Compute where are the useful datas */ 1401 data_off = (char*)(head + 1) - mtod(data->m, char*); 1402 1403 /* 1404 * If the number of free entry is too low 1405 * just dup the data->m socket and reuse the same rbuf entry 1406 */ 1407 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1408 1409 /* Prepare the mbuf for the m_dup */ 1410 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1411 data->m->m_data = (char*) data->m->m_data + data_off; 1412 1413 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1414 1415 /* Restore the m_data pointer for future use */ 1416 data->m->m_data = (char*) data->m->m_data - data_off; 1417 1418 if (m == NULL) { 1419 ifp->if_ierrors++; 1420 return; 1421 } 1422 } else { 1423 1424 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1425 if (mnew == NULL) { 1426 ifp->if_ierrors++; 1427 return; 1428 } 1429 1430 rbuf = wpi_alloc_rbuf(sc); 1431 KASSERT(rbuf != NULL); 1432 1433 /* attach Rx buffer to mbuf */ 1434 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1435 rbuf); 1436 mnew->m_flags |= M_EXT_RW; 1437 1438 m = data->m; 1439 data->m = mnew; 1440 1441 /* update Rx descriptor */ 1442 ring->desc[ring->cur] = htole32(rbuf->paddr); 1443 1444 m->m_data = (char*)m->m_data + data_off; 1445 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1446 } 1447 1448 /* finalize mbuf */ 1449 m->m_pkthdr.rcvif = ifp; 1450 1451 if (ic->ic_state == IEEE80211_S_SCAN) 1452 wpi_fix_channel(ic, m); 1453 1454 #if NBPFILTER > 0 1455 if (sc->sc_drvbpf != NULL) { 1456 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1457 1458 tap->wr_flags = 0; 1459 tap->wr_chan_freq = 1460 htole16(ic->ic_channels[head->chan].ic_freq); 1461 tap->wr_chan_flags = 1462 htole16(ic->ic_channels[head->chan].ic_flags); 1463 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1464 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1465 tap->wr_tsft = tail->tstamp; 1466 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1467 switch (head->rate) { 1468 /* CCK rates */ 1469 case 10: tap->wr_rate = 2; break; 1470 case 20: tap->wr_rate = 4; break; 1471 case 55: tap->wr_rate = 11; break; 1472 case 110: tap->wr_rate = 22; break; 1473 /* OFDM rates */ 1474 case 0xd: tap->wr_rate = 12; break; 1475 case 0xf: tap->wr_rate = 18; break; 1476 case 0x5: tap->wr_rate = 24; break; 1477 case 0x7: tap->wr_rate = 36; break; 1478 case 0x9: tap->wr_rate = 48; break; 1479 case 0xb: tap->wr_rate = 72; break; 1480 case 0x1: tap->wr_rate = 96; break; 1481 case 0x3: tap->wr_rate = 108; break; 1482 /* unknown rate: should not happen */ 1483 default: tap->wr_rate = 0; 1484 } 1485 if (le16toh(head->flags) & 0x4) 1486 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1487 1488 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1489 } 1490 #endif 1491 1492 /* grab a reference to the source node */ 1493 wh = mtod(m, struct ieee80211_frame *); 1494 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1495 1496 /* send the frame to the 802.11 layer */ 1497 ieee80211_input(ic, m, ni, stat->rssi, 0); 1498 1499 /* release node reference */ 1500 ieee80211_free_node(ni); 1501 } 1502 1503 static void 1504 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1505 { 1506 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1507 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1508 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1509 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1510 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1511 1512 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1513 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1514 stat->nkill, stat->rate, le32toh(stat->duration), 1515 le32toh(stat->status))); 1516 1517 /* 1518 * Update rate control statistics for the node. 1519 * XXX we should not count mgmt frames since they're always sent at 1520 * the lowest available bit-rate. 1521 */ 1522 wn->amn.amn_txcnt++; 1523 if (stat->ntries > 0) { 1524 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1525 wn->amn.amn_retrycnt++; 1526 } 1527 1528 if ((le32toh(stat->status) & 0xff) != 1) 1529 ifp->if_oerrors++; 1530 else 1531 ifp->if_opackets++; 1532 1533 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1534 m_freem(txdata->m); 1535 txdata->m = NULL; 1536 ieee80211_free_node(txdata->ni); 1537 txdata->ni = NULL; 1538 1539 ring->queued--; 1540 1541 sc->sc_tx_timer = 0; 1542 ifp->if_flags &= ~IFF_OACTIVE; 1543 wpi_start(ifp); 1544 } 1545 1546 static void 1547 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1548 { 1549 struct wpi_tx_ring *ring = &sc->cmdq; 1550 struct wpi_tx_data *data; 1551 1552 if ((desc->qid & 7) != 4) 1553 return; /* not a command ack */ 1554 1555 data = &ring->data[desc->idx]; 1556 1557 /* if the command was mapped in a mbuf, free it */ 1558 if (data->m != NULL) { 1559 bus_dmamap_unload(sc->sc_dmat, data->map); 1560 m_freem(data->m); 1561 data->m = NULL; 1562 } 1563 1564 wakeup(&ring->cmd[desc->idx]); 1565 } 1566 1567 static void 1568 wpi_notif_intr(struct wpi_softc *sc) 1569 { 1570 struct ieee80211com *ic = &sc->sc_ic; 1571 struct ifnet *ifp = ic->ic_ifp; 1572 struct wpi_rx_desc *desc; 1573 struct wpi_rx_data *data; 1574 uint32_t hw; 1575 1576 hw = le32toh(sc->shared->next); 1577 while (sc->rxq.cur != hw) { 1578 data = &sc->rxq.data[sc->rxq.cur]; 1579 1580 desc = mtod(data->m, struct wpi_rx_desc *); 1581 1582 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1583 "len=%d\n", desc->qid, desc->idx, desc->flags, 1584 desc->type, le32toh(desc->len))); 1585 1586 if (!(desc->qid & 0x80)) /* reply to a command */ 1587 wpi_cmd_intr(sc, desc); 1588 1589 switch (desc->type) { 1590 case WPI_RX_DONE: 1591 /* a 802.11 frame was received */ 1592 wpi_rx_intr(sc, desc, data); 1593 break; 1594 1595 case WPI_TX_DONE: 1596 /* a 802.11 frame has been transmitted */ 1597 wpi_tx_intr(sc, desc); 1598 break; 1599 1600 case WPI_UC_READY: 1601 { 1602 struct wpi_ucode_info *uc = 1603 (struct wpi_ucode_info *)(desc + 1); 1604 1605 /* the microcontroller is ready */ 1606 DPRINTF(("microcode alive notification version %x " 1607 "alive %x\n", le32toh(uc->version), 1608 le32toh(uc->valid))); 1609 1610 if (le32toh(uc->valid) != 1) { 1611 aprint_error("%s: microcontroller " 1612 "initialization failed\n", 1613 sc->sc_dev.dv_xname); 1614 } 1615 break; 1616 } 1617 case WPI_STATE_CHANGED: 1618 { 1619 uint32_t *status = (uint32_t *)(desc + 1); 1620 1621 /* enabled/disabled notification */ 1622 DPRINTF(("state changed to %x\n", le32toh(*status))); 1623 1624 if (le32toh(*status) & 1) { 1625 /* the radio button has to be pushed */ 1626 aprint_error("%s: Radio transmitter is off\n", 1627 sc->sc_dev.dv_xname); 1628 /* turn the interface down */ 1629 ifp->if_flags &= ~IFF_UP; 1630 wpi_stop(ifp, 1); 1631 return; /* no further processing */ 1632 } 1633 break; 1634 } 1635 case WPI_START_SCAN: 1636 { 1637 struct wpi_start_scan *scan = 1638 (struct wpi_start_scan *)(desc + 1); 1639 1640 DPRINTFN(2, ("scanning channel %d status %x\n", 1641 scan->chan, le32toh(scan->status))); 1642 1643 /* fix current channel */ 1644 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1645 break; 1646 } 1647 case WPI_STOP_SCAN: 1648 { 1649 struct wpi_stop_scan *scan = 1650 (struct wpi_stop_scan *)(desc + 1); 1651 1652 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1653 scan->nchan, scan->status, scan->chan)); 1654 1655 if (scan->status == 1 && scan->chan <= 14) { 1656 /* 1657 * We just finished scanning 802.11g channels, 1658 * start scanning 802.11a ones. 1659 */ 1660 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1661 break; 1662 } 1663 sc->is_scanning = false; 1664 ieee80211_end_scan(ic); 1665 break; 1666 } 1667 } 1668 1669 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1670 } 1671 1672 /* tell the firmware what we have processed */ 1673 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1674 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1675 } 1676 1677 static int 1678 wpi_intr(void *arg) 1679 { 1680 struct wpi_softc *sc = arg; 1681 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1682 uint32_t r; 1683 1684 r = WPI_READ(sc, WPI_INTR); 1685 if (r == 0 || r == 0xffffffff) 1686 return 0; /* not for us */ 1687 1688 DPRINTFN(5, ("interrupt reg %x\n", r)); 1689 1690 /* disable interrupts */ 1691 WPI_WRITE(sc, WPI_MASK, 0); 1692 /* ack interrupts */ 1693 WPI_WRITE(sc, WPI_INTR, r); 1694 1695 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1696 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1697 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1698 wpi_stop(sc->sc_ic.ic_ifp, 1); 1699 return 1; 1700 } 1701 1702 if (r & WPI_RX_INTR) 1703 wpi_notif_intr(sc); 1704 1705 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1706 wakeup(sc); 1707 1708 /* re-enable interrupts */ 1709 if (ifp->if_flags & IFF_UP) 1710 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1711 1712 return 1; 1713 } 1714 1715 static uint8_t 1716 wpi_plcp_signal(int rate) 1717 { 1718 switch (rate) { 1719 /* CCK rates (returned values are device-dependent) */ 1720 case 2: return 10; 1721 case 4: return 20; 1722 case 11: return 55; 1723 case 22: return 110; 1724 1725 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1726 /* R1-R4, (u)ral is R4-R1 */ 1727 case 12: return 0xd; 1728 case 18: return 0xf; 1729 case 24: return 0x5; 1730 case 36: return 0x7; 1731 case 48: return 0x9; 1732 case 72: return 0xb; 1733 case 96: return 0x1; 1734 case 108: return 0x3; 1735 1736 /* unsupported rates (should not get there) */ 1737 default: return 0; 1738 } 1739 } 1740 1741 /* quickly determine if a given rate is CCK or OFDM */ 1742 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1743 1744 static int 1745 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1746 int ac) 1747 { 1748 struct ieee80211com *ic = &sc->sc_ic; 1749 struct wpi_tx_ring *ring = &sc->txq[ac]; 1750 struct wpi_tx_desc *desc; 1751 struct wpi_tx_data *data; 1752 struct wpi_tx_cmd *cmd; 1753 struct wpi_cmd_data *tx; 1754 struct ieee80211_frame *wh; 1755 struct ieee80211_key *k; 1756 const struct chanAccParams *cap; 1757 struct mbuf *mnew; 1758 int i, error, rate, hdrlen, noack = 0; 1759 1760 desc = &ring->desc[ring->cur]; 1761 data = &ring->data[ring->cur]; 1762 1763 wh = mtod(m0, struct ieee80211_frame *); 1764 1765 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1766 hdrlen = sizeof (struct ieee80211_qosframe); 1767 cap = &ic->ic_wme.wme_chanParams; 1768 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1769 } else 1770 hdrlen = sizeof (struct ieee80211_frame); 1771 1772 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1773 k = ieee80211_crypto_encap(ic, ni, m0); 1774 if (k == NULL) { 1775 m_freem(m0); 1776 return ENOBUFS; 1777 } 1778 1779 /* packet header may have moved, reset our local pointer */ 1780 wh = mtod(m0, struct ieee80211_frame *); 1781 } 1782 1783 /* pickup a rate */ 1784 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1785 IEEE80211_FC0_TYPE_MGT) { 1786 /* mgmt frames are sent at the lowest available bit-rate */ 1787 rate = ni->ni_rates.rs_rates[0]; 1788 } else { 1789 if (ic->ic_fixed_rate != -1) { 1790 rate = ic->ic_sup_rates[ic->ic_curmode]. 1791 rs_rates[ic->ic_fixed_rate]; 1792 } else 1793 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1794 } 1795 rate &= IEEE80211_RATE_VAL; 1796 1797 1798 #if NBPFILTER > 0 1799 if (sc->sc_drvbpf != NULL) { 1800 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1801 1802 tap->wt_flags = 0; 1803 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1804 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1805 tap->wt_rate = rate; 1806 tap->wt_hwqueue = ac; 1807 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1808 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1809 1810 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1811 } 1812 #endif 1813 1814 cmd = &ring->cmd[ring->cur]; 1815 cmd->code = WPI_CMD_TX_DATA; 1816 cmd->flags = 0; 1817 cmd->qid = ring->qid; 1818 cmd->idx = ring->cur; 1819 1820 tx = (struct wpi_cmd_data *)cmd->data; 1821 tx->flags = 0; 1822 1823 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1824 tx->flags |= htole32(WPI_TX_NEED_ACK); 1825 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1826 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1827 1828 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1829 1830 /* retrieve destination node's id */ 1831 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1832 WPI_ID_BSS; 1833 1834 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1835 IEEE80211_FC0_TYPE_MGT) { 1836 /* tell h/w to set timestamp in probe responses */ 1837 if ((wh->i_fc[0] & 1838 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1839 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1840 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1841 1842 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1843 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1844 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1845 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1846 tx->timeout = htole16(3); 1847 else 1848 tx->timeout = htole16(2); 1849 } else 1850 tx->timeout = htole16(0); 1851 1852 tx->rate = wpi_plcp_signal(rate); 1853 1854 /* be very persistant at sending frames out */ 1855 tx->rts_ntries = 7; 1856 tx->data_ntries = 15; 1857 1858 tx->ofdm_mask = 0xff; 1859 tx->cck_mask = 0xf; 1860 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1861 1862 tx->len = htole16(m0->m_pkthdr.len); 1863 1864 /* save and trim IEEE802.11 header */ 1865 m_copydata(m0, 0, hdrlen, (void *)&tx->wh); 1866 m_adj(m0, hdrlen); 1867 1868 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1869 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1870 if (error != 0 && error != EFBIG) { 1871 aprint_error("%s: could not map mbuf (error %d)\n", 1872 sc->sc_dev.dv_xname, error); 1873 m_freem(m0); 1874 return error; 1875 } 1876 if (error != 0) { 1877 /* too many fragments, linearize */ 1878 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1879 if (mnew == NULL) { 1880 m_freem(m0); 1881 return ENOMEM; 1882 } 1883 1884 M_COPY_PKTHDR(mnew, m0); 1885 if (m0->m_pkthdr.len > MHLEN) { 1886 MCLGET(mnew, M_DONTWAIT); 1887 if (!(mnew->m_flags & M_EXT)) { 1888 m_freem(m0); 1889 m_freem(mnew); 1890 return ENOMEM; 1891 } 1892 } 1893 1894 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1895 m_freem(m0); 1896 mnew->m_len = mnew->m_pkthdr.len; 1897 m0 = mnew; 1898 1899 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1900 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1901 if (error != 0) { 1902 aprint_error("%s: could not map mbuf (error %d)\n", 1903 sc->sc_dev.dv_xname, error); 1904 m_freem(m0); 1905 return error; 1906 } 1907 } 1908 1909 data->m = m0; 1910 data->ni = ni; 1911 1912 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1913 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1914 1915 /* first scatter/gather segment is used by the tx data command */ 1916 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1917 (1 + data->map->dm_nsegs) << 24); 1918 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1919 ring->cur * sizeof (struct wpi_tx_cmd)); 1920 /*XXX The next line might be wrong. I don't use hdrlen*/ 1921 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1922 1923 for (i = 1; i <= data->map->dm_nsegs; i++) { 1924 desc->segs[i].addr = 1925 htole32(data->map->dm_segs[i - 1].ds_addr); 1926 desc->segs[i].len = 1927 htole32(data->map->dm_segs[i - 1].ds_len); 1928 } 1929 1930 ring->queued++; 1931 1932 /* kick ring */ 1933 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1934 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1935 1936 return 0; 1937 } 1938 1939 static void 1940 wpi_start(struct ifnet *ifp) 1941 { 1942 struct wpi_softc *sc = ifp->if_softc; 1943 struct ieee80211com *ic = &sc->sc_ic; 1944 struct ieee80211_node *ni; 1945 struct ether_header *eh; 1946 struct mbuf *m0; 1947 int ac; 1948 1949 /* 1950 * net80211 may still try to send management frames even if the 1951 * IFF_RUNNING flag is not set... 1952 */ 1953 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1954 return; 1955 1956 for (;;) { 1957 IF_DEQUEUE(&ic->ic_mgtq, m0); 1958 if (m0 != NULL) { 1959 1960 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1961 m0->m_pkthdr.rcvif = NULL; 1962 1963 /* management frames go into ring 0 */ 1964 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1965 ifp->if_oerrors++; 1966 continue; 1967 } 1968 #if NBPFILTER > 0 1969 if (ic->ic_rawbpf != NULL) 1970 bpf_mtap(ic->ic_rawbpf, m0); 1971 #endif 1972 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1973 ifp->if_oerrors++; 1974 break; 1975 } 1976 } else { 1977 if (ic->ic_state != IEEE80211_S_RUN) 1978 break; 1979 IFQ_POLL(&ifp->if_snd, m0); 1980 if (m0 == NULL) 1981 break; 1982 1983 if (m0->m_len < sizeof (*eh) && 1984 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 1985 ifp->if_oerrors++; 1986 continue; 1987 } 1988 eh = mtod(m0, struct ether_header *); 1989 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1990 if (ni == NULL) { 1991 m_freem(m0); 1992 ifp->if_oerrors++; 1993 continue; 1994 } 1995 1996 /* classify mbuf so we can find which tx ring to use */ 1997 if (ieee80211_classify(ic, m0, ni) != 0) { 1998 m_freem(m0); 1999 ieee80211_free_node(ni); 2000 ifp->if_oerrors++; 2001 continue; 2002 } 2003 2004 /* no QoS encapsulation for EAPOL frames */ 2005 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2006 M_WME_GETAC(m0) : WME_AC_BE; 2007 2008 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2009 /* there is no place left in this ring */ 2010 ifp->if_flags |= IFF_OACTIVE; 2011 break; 2012 } 2013 IFQ_DEQUEUE(&ifp->if_snd, m0); 2014 #if NBPFILTER > 0 2015 if (ifp->if_bpf != NULL) 2016 bpf_mtap(ifp->if_bpf, m0); 2017 #endif 2018 m0 = ieee80211_encap(ic, m0, ni); 2019 if (m0 == NULL) { 2020 ieee80211_free_node(ni); 2021 ifp->if_oerrors++; 2022 continue; 2023 } 2024 #if NBPFILTER > 0 2025 if (ic->ic_rawbpf != NULL) 2026 bpf_mtap(ic->ic_rawbpf, m0); 2027 #endif 2028 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2029 ieee80211_free_node(ni); 2030 ifp->if_oerrors++; 2031 break; 2032 } 2033 } 2034 2035 sc->sc_tx_timer = 5; 2036 ifp->if_timer = 1; 2037 } 2038 } 2039 2040 static void 2041 wpi_watchdog(struct ifnet *ifp) 2042 { 2043 struct wpi_softc *sc = ifp->if_softc; 2044 2045 ifp->if_timer = 0; 2046 2047 if (sc->sc_tx_timer > 0) { 2048 if (--sc->sc_tx_timer == 0) { 2049 aprint_error("%s: device timeout\n", 2050 sc->sc_dev.dv_xname); 2051 ifp->if_oerrors++; 2052 ifp->if_flags &= ~IFF_UP; 2053 wpi_stop(ifp, 1); 2054 return; 2055 } 2056 ifp->if_timer = 1; 2057 } 2058 2059 ieee80211_watchdog(&sc->sc_ic); 2060 } 2061 2062 static int 2063 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2064 { 2065 #define IS_RUNNING(ifp) \ 2066 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2067 2068 struct wpi_softc *sc = ifp->if_softc; 2069 struct ieee80211com *ic = &sc->sc_ic; 2070 int s, error = 0; 2071 2072 s = splnet(); 2073 2074 switch (cmd) { 2075 case SIOCSIFFLAGS: 2076 if (ifp->if_flags & IFF_UP) { 2077 if (!(ifp->if_flags & IFF_RUNNING)) 2078 wpi_init(ifp); 2079 } else { 2080 if (ifp->if_flags & IFF_RUNNING) 2081 wpi_stop(ifp, 1); 2082 } 2083 break; 2084 2085 case SIOCADDMULTI: 2086 case SIOCDELMULTI: 2087 /* XXX no h/w multicast filter? --dyoung */ 2088 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2089 /* setup multicast filter, etc */ 2090 error = 0; 2091 } 2092 break; 2093 2094 default: 2095 error = ieee80211_ioctl(ic, cmd, data); 2096 } 2097 2098 if (error == ENETRESET) { 2099 if (IS_RUNNING(ifp) && 2100 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2101 wpi_init(ifp); 2102 error = 0; 2103 } 2104 2105 splx(s); 2106 return error; 2107 2108 #undef IS_RUNNING 2109 } 2110 2111 /* 2112 * Extract various information from EEPROM. 2113 */ 2114 static void 2115 wpi_read_eeprom(struct wpi_softc *sc) 2116 { 2117 struct ieee80211com *ic = &sc->sc_ic; 2118 char domain[4]; 2119 int i; 2120 2121 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2122 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2123 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2124 2125 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2126 sc->type)); 2127 2128 /* read and print regulatory domain */ 2129 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2130 aprint_normal(", %.4s", domain); 2131 2132 /* read and print MAC address */ 2133 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2134 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2135 2136 /* read the list of authorized channels */ 2137 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2138 wpi_read_eeprom_channels(sc, i); 2139 2140 /* read the list of power groups */ 2141 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2142 wpi_read_eeprom_group(sc, i); 2143 } 2144 2145 static void 2146 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2147 { 2148 struct ieee80211com *ic = &sc->sc_ic; 2149 const struct wpi_chan_band *band = &wpi_bands[n]; 2150 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2151 int chan, i; 2152 2153 wpi_read_prom_data(sc, band->addr, channels, 2154 band->nchan * sizeof (struct wpi_eeprom_chan)); 2155 2156 for (i = 0; i < band->nchan; i++) { 2157 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2158 continue; 2159 2160 chan = band->chan[i]; 2161 2162 if (n == 0) { /* 2GHz band */ 2163 ic->ic_channels[chan].ic_freq = 2164 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2165 ic->ic_channels[chan].ic_flags = 2166 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2167 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2168 2169 } else { /* 5GHz band */ 2170 /* 2171 * Some 3945abg adapters support channels 7, 8, 11 2172 * and 12 in the 2GHz *and* 5GHz bands. 2173 * Because of limitations in our net80211(9) stack, 2174 * we can't support these channels in 5GHz band. 2175 */ 2176 if (chan <= 14) 2177 continue; 2178 2179 ic->ic_channels[chan].ic_freq = 2180 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2181 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2182 } 2183 2184 /* is active scan allowed on this channel? */ 2185 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2186 ic->ic_channels[chan].ic_flags |= 2187 IEEE80211_CHAN_PASSIVE; 2188 } 2189 2190 /* save maximum allowed power for this channel */ 2191 sc->maxpwr[chan] = channels[i].maxpwr; 2192 2193 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2194 chan, channels[i].flags, sc->maxpwr[chan])); 2195 } 2196 } 2197 2198 static void 2199 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2200 { 2201 struct wpi_power_group *group = &sc->groups[n]; 2202 struct wpi_eeprom_group rgroup; 2203 int i; 2204 2205 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2206 sizeof rgroup); 2207 2208 /* save power group information */ 2209 group->chan = rgroup.chan; 2210 group->maxpwr = rgroup.maxpwr; 2211 /* temperature at which the samples were taken */ 2212 group->temp = (int16_t)le16toh(rgroup.temp); 2213 2214 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2215 group->chan, group->maxpwr, group->temp)); 2216 2217 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2218 group->samples[i].index = rgroup.samples[i].index; 2219 group->samples[i].power = rgroup.samples[i].power; 2220 2221 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2222 group->samples[i].index, group->samples[i].power)); 2223 } 2224 } 2225 2226 /* 2227 * Send a command to the firmware. 2228 */ 2229 static int 2230 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2231 { 2232 struct wpi_tx_ring *ring = &sc->cmdq; 2233 struct wpi_tx_desc *desc; 2234 struct wpi_tx_cmd *cmd; 2235 2236 KASSERT(size <= sizeof cmd->data); 2237 2238 desc = &ring->desc[ring->cur]; 2239 cmd = &ring->cmd[ring->cur]; 2240 2241 cmd->code = code; 2242 cmd->flags = 0; 2243 cmd->qid = ring->qid; 2244 cmd->idx = ring->cur; 2245 memcpy(cmd->data, buf, size); 2246 2247 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2248 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2249 ring->cur * sizeof (struct wpi_tx_cmd)); 2250 desc->segs[0].len = htole32(4 + size); 2251 2252 /* kick cmd ring */ 2253 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2254 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2255 2256 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2257 } 2258 2259 static int 2260 wpi_wme_update(struct ieee80211com *ic) 2261 { 2262 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2263 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2264 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2265 const struct wmeParams *wmep; 2266 struct wpi_wme_setup wme; 2267 int ac; 2268 2269 /* don't override default WME values if WME is not actually enabled */ 2270 if (!(ic->ic_flags & IEEE80211_F_WME)) 2271 return 0; 2272 2273 wme.flags = 0; 2274 for (ac = 0; ac < WME_NUM_AC; ac++) { 2275 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2276 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2277 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2278 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2279 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2280 2281 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2282 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2283 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2284 } 2285 2286 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2287 #undef WPI_USEC 2288 #undef WPI_EXP2 2289 } 2290 2291 /* 2292 * Configure h/w multi-rate retries. 2293 */ 2294 static int 2295 wpi_mrr_setup(struct wpi_softc *sc) 2296 { 2297 struct ieee80211com *ic = &sc->sc_ic; 2298 struct wpi_mrr_setup mrr; 2299 int i, error; 2300 2301 /* CCK rates (not used with 802.11a) */ 2302 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2303 mrr.rates[i].flags = 0; 2304 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2305 /* fallback to the immediate lower CCK rate (if any) */ 2306 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2307 /* try one time at this rate before falling back to "next" */ 2308 mrr.rates[i].ntries = 1; 2309 } 2310 2311 /* OFDM rates (not used with 802.11b) */ 2312 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2313 mrr.rates[i].flags = 0; 2314 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2315 /* fallback to the immediate lower rate (if any) */ 2316 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2317 mrr.rates[i].next = (i == WPI_OFDM6) ? 2318 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2319 WPI_OFDM6 : WPI_CCK2) : 2320 i - 1; 2321 /* try one time at this rate before falling back to "next" */ 2322 mrr.rates[i].ntries = 1; 2323 } 2324 2325 /* setup MRR for control frames */ 2326 mrr.which = htole32(WPI_MRR_CTL); 2327 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2328 if (error != 0) { 2329 aprint_error("%s: could not setup MRR for control frames\n", 2330 sc->sc_dev.dv_xname); 2331 return error; 2332 } 2333 2334 /* setup MRR for data frames */ 2335 mrr.which = htole32(WPI_MRR_DATA); 2336 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2337 if (error != 0) { 2338 aprint_error("%s: could not setup MRR for data frames\n", 2339 sc->sc_dev.dv_xname); 2340 return error; 2341 } 2342 2343 return 0; 2344 } 2345 2346 static void 2347 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2348 { 2349 struct wpi_cmd_led led; 2350 2351 led.which = which; 2352 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2353 led.off = off; 2354 led.on = on; 2355 2356 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2357 } 2358 2359 static void 2360 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2361 { 2362 struct wpi_cmd_tsf tsf; 2363 uint64_t val, mod; 2364 2365 memset(&tsf, 0, sizeof tsf); 2366 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2367 tsf.bintval = htole16(ni->ni_intval); 2368 tsf.lintval = htole16(10); 2369 2370 /* compute remaining time until next beacon */ 2371 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2372 mod = le64toh(tsf.tstamp) % val; 2373 tsf.binitval = htole32((uint32_t)(val - mod)); 2374 2375 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2376 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2377 2378 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2379 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2380 } 2381 2382 /* 2383 * Update Tx power to match what is defined for channel `c'. 2384 */ 2385 static int 2386 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2387 { 2388 struct ieee80211com *ic = &sc->sc_ic; 2389 struct wpi_power_group *group; 2390 struct wpi_cmd_txpower txpower; 2391 u_int chan; 2392 int i; 2393 2394 /* get channel number */ 2395 chan = ieee80211_chan2ieee(ic, c); 2396 2397 /* find the power group to which this channel belongs */ 2398 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2399 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2400 if (chan <= group->chan) 2401 break; 2402 } else 2403 group = &sc->groups[0]; 2404 2405 memset(&txpower, 0, sizeof txpower); 2406 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2407 txpower.chan = htole16(chan); 2408 2409 /* set Tx power for all OFDM and CCK rates */ 2410 for (i = 0; i <= 11 ; i++) { 2411 /* retrieve Tx power for this channel/rate combination */ 2412 int idx = wpi_get_power_index(sc, group, c, 2413 wpi_ridx_to_rate[i]); 2414 2415 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2416 2417 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2418 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2419 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2420 } else { 2421 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2422 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2423 } 2424 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2425 wpi_ridx_to_rate[i], idx)); 2426 } 2427 2428 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2429 } 2430 2431 /* 2432 * Determine Tx power index for a given channel/rate combination. 2433 * This takes into account the regulatory information from EEPROM and the 2434 * current temperature. 2435 */ 2436 static int 2437 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2438 struct ieee80211_channel *c, int rate) 2439 { 2440 /* fixed-point arithmetic division using a n-bit fractional part */ 2441 #define fdivround(a, b, n) \ 2442 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2443 2444 /* linear interpolation */ 2445 #define interpolate(x, x1, y1, x2, y2, n) \ 2446 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2447 2448 struct ieee80211com *ic = &sc->sc_ic; 2449 struct wpi_power_sample *sample; 2450 int pwr, idx; 2451 u_int chan; 2452 2453 /* get channel number */ 2454 chan = ieee80211_chan2ieee(ic, c); 2455 2456 /* default power is group's maximum power - 3dB */ 2457 pwr = group->maxpwr / 2; 2458 2459 /* decrease power for highest OFDM rates to reduce distortion */ 2460 switch (rate) { 2461 case 72: /* 36Mb/s */ 2462 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2463 break; 2464 case 96: /* 48Mb/s */ 2465 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2466 break; 2467 case 108: /* 54Mb/s */ 2468 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2469 break; 2470 } 2471 2472 /* never exceed channel's maximum allowed Tx power */ 2473 pwr = min(pwr, sc->maxpwr[chan]); 2474 2475 /* retrieve power index into gain tables from samples */ 2476 for (sample = group->samples; sample < &group->samples[3]; sample++) 2477 if (pwr > sample[1].power) 2478 break; 2479 /* fixed-point linear interpolation using a 19-bit fractional part */ 2480 idx = interpolate(pwr, sample[0].power, sample[0].index, 2481 sample[1].power, sample[1].index, 19); 2482 2483 /* 2484 * Adjust power index based on current temperature: 2485 * - if cooler than factory-calibrated: decrease output power 2486 * - if warmer than factory-calibrated: increase output power 2487 */ 2488 idx -= (sc->temp - group->temp) * 11 / 100; 2489 2490 /* decrease power for CCK rates (-5dB) */ 2491 if (!WPI_RATE_IS_OFDM(rate)) 2492 idx += 10; 2493 2494 /* keep power index in a valid range */ 2495 if (idx < 0) 2496 return 0; 2497 if (idx > WPI_MAX_PWR_INDEX) 2498 return WPI_MAX_PWR_INDEX; 2499 return idx; 2500 2501 #undef interpolate 2502 #undef fdivround 2503 } 2504 2505 /* 2506 * Build a beacon frame that the firmware will broadcast periodically in 2507 * IBSS or HostAP modes. 2508 */ 2509 static int 2510 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2511 { 2512 struct ieee80211com *ic = &sc->sc_ic; 2513 struct wpi_tx_ring *ring = &sc->cmdq; 2514 struct wpi_tx_desc *desc; 2515 struct wpi_tx_data *data; 2516 struct wpi_tx_cmd *cmd; 2517 struct wpi_cmd_beacon *bcn; 2518 struct ieee80211_beacon_offsets bo; 2519 struct mbuf *m0; 2520 int error; 2521 2522 desc = &ring->desc[ring->cur]; 2523 data = &ring->data[ring->cur]; 2524 2525 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2526 if (m0 == NULL) { 2527 aprint_error("%s: could not allocate beacon frame\n", 2528 sc->sc_dev.dv_xname); 2529 return ENOMEM; 2530 } 2531 2532 cmd = &ring->cmd[ring->cur]; 2533 cmd->code = WPI_CMD_SET_BEACON; 2534 cmd->flags = 0; 2535 cmd->qid = ring->qid; 2536 cmd->idx = ring->cur; 2537 2538 bcn = (struct wpi_cmd_beacon *)cmd->data; 2539 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2540 bcn->id = WPI_ID_BROADCAST; 2541 bcn->ofdm_mask = 0xff; 2542 bcn->cck_mask = 0x0f; 2543 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2544 bcn->len = htole16(m0->m_pkthdr.len); 2545 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2546 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2547 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2548 2549 /* save and trim IEEE802.11 header */ 2550 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2551 m_adj(m0, sizeof (struct ieee80211_frame)); 2552 2553 /* assume beacon frame is contiguous */ 2554 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2555 BUS_DMA_READ | BUS_DMA_NOWAIT); 2556 if (error) { 2557 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2558 m_freem(m0); 2559 return error; 2560 } 2561 2562 data->m = m0; 2563 2564 /* first scatter/gather segment is used by the beacon command */ 2565 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2566 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2567 ring->cur * sizeof (struct wpi_tx_cmd)); 2568 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2569 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2570 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2571 2572 /* kick cmd ring */ 2573 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2574 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2575 2576 return 0; 2577 } 2578 2579 static int 2580 wpi_auth(struct wpi_softc *sc) 2581 { 2582 struct ieee80211com *ic = &sc->sc_ic; 2583 struct ieee80211_node *ni = ic->ic_bss; 2584 struct wpi_node_info node; 2585 int error; 2586 2587 /* update adapter's configuration */ 2588 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2589 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2590 sc->config.flags = htole32(WPI_CONFIG_TSF); 2591 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2592 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2593 WPI_CONFIG_24GHZ); 2594 } 2595 switch (ic->ic_curmode) { 2596 case IEEE80211_MODE_11A: 2597 sc->config.cck_mask = 0; 2598 sc->config.ofdm_mask = 0x15; 2599 break; 2600 case IEEE80211_MODE_11B: 2601 sc->config.cck_mask = 0x03; 2602 sc->config.ofdm_mask = 0; 2603 break; 2604 default: /* assume 802.11b/g */ 2605 sc->config.cck_mask = 0x0f; 2606 sc->config.ofdm_mask = 0x15; 2607 } 2608 2609 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2610 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2611 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2612 sizeof (struct wpi_config), 1); 2613 if (error != 0) { 2614 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2615 return error; 2616 } 2617 2618 /* configuration has changed, set Tx power accordingly */ 2619 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2620 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2621 return error; 2622 } 2623 2624 /* add default node */ 2625 memset(&node, 0, sizeof node); 2626 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2627 node.id = WPI_ID_BSS; 2628 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2629 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2630 node.action = htole32(WPI_ACTION_SET_RATE); 2631 node.antenna = WPI_ANTENNA_BOTH; 2632 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2633 if (error != 0) { 2634 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2635 return error; 2636 } 2637 2638 return 0; 2639 } 2640 2641 /* 2642 * Send a scan request to the firmware. Since this command is huge, we map it 2643 * into a mbuf instead of using the pre-allocated set of commands. 2644 */ 2645 static int 2646 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2647 { 2648 struct ieee80211com *ic = &sc->sc_ic; 2649 struct wpi_tx_ring *ring = &sc->cmdq; 2650 struct wpi_tx_desc *desc; 2651 struct wpi_tx_data *data; 2652 struct wpi_tx_cmd *cmd; 2653 struct wpi_scan_hdr *hdr; 2654 struct wpi_scan_chan *chan; 2655 struct ieee80211_frame *wh; 2656 struct ieee80211_rateset *rs; 2657 struct ieee80211_channel *c; 2658 enum ieee80211_phymode mode; 2659 uint8_t *frm; 2660 int nrates, pktlen, error; 2661 2662 desc = &ring->desc[ring->cur]; 2663 data = &ring->data[ring->cur]; 2664 2665 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2666 if (data->m == NULL) { 2667 aprint_error("%s: could not allocate mbuf for scan command\n", 2668 sc->sc_dev.dv_xname); 2669 return ENOMEM; 2670 } 2671 2672 MCLGET(data->m, M_DONTWAIT); 2673 if (!(data->m->m_flags & M_EXT)) { 2674 m_freem(data->m); 2675 data->m = NULL; 2676 aprint_error("%s: could not allocate mbuf for scan command\n", 2677 sc->sc_dev.dv_xname); 2678 return ENOMEM; 2679 } 2680 2681 cmd = mtod(data->m, struct wpi_tx_cmd *); 2682 cmd->code = WPI_CMD_SCAN; 2683 cmd->flags = 0; 2684 cmd->qid = ring->qid; 2685 cmd->idx = ring->cur; 2686 2687 hdr = (struct wpi_scan_hdr *)cmd->data; 2688 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2689 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2690 hdr->id = WPI_ID_BROADCAST; 2691 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2692 2693 /* 2694 * Move to the next channel if no packets are received within 5 msecs 2695 * after sending the probe request (this helps to reduce the duration 2696 * of active scans). 2697 */ 2698 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2699 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2700 2701 if (flags & IEEE80211_CHAN_A) { 2702 hdr->crc_threshold = htole16(1); 2703 /* send probe requests at 6Mbps */ 2704 hdr->rate = wpi_plcp_signal(12); 2705 } else { 2706 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2707 /* send probe requests at 1Mbps */ 2708 hdr->rate = wpi_plcp_signal(2); 2709 } 2710 2711 /* for directed scans, firmware inserts the essid IE itself */ 2712 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2713 hdr->essid[0].len = ic->ic_des_esslen; 2714 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2715 2716 /* 2717 * Build a probe request frame. Most of the following code is a 2718 * copy & paste of what is done in net80211. 2719 */ 2720 wh = (struct ieee80211_frame *)(hdr + 1); 2721 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2722 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2723 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2724 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2725 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2726 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2727 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2728 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2729 2730 frm = (uint8_t *)(wh + 1); 2731 2732 /* add empty essid IE (firmware generates it for directed scans) */ 2733 *frm++ = IEEE80211_ELEMID_SSID; 2734 *frm++ = 0; 2735 2736 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2737 rs = &ic->ic_sup_rates[mode]; 2738 2739 /* add supported rates IE */ 2740 *frm++ = IEEE80211_ELEMID_RATES; 2741 nrates = rs->rs_nrates; 2742 if (nrates > IEEE80211_RATE_SIZE) 2743 nrates = IEEE80211_RATE_SIZE; 2744 *frm++ = nrates; 2745 memcpy(frm, rs->rs_rates, nrates); 2746 frm += nrates; 2747 2748 /* add supported xrates IE */ 2749 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2750 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2751 *frm++ = IEEE80211_ELEMID_XRATES; 2752 *frm++ = nrates; 2753 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2754 frm += nrates; 2755 } 2756 2757 /* setup length of probe request */ 2758 hdr->paylen = htole16(frm - (uint8_t *)wh); 2759 2760 chan = (struct wpi_scan_chan *)frm; 2761 for (c = &ic->ic_channels[1]; 2762 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2763 if ((c->ic_flags & flags) != flags) 2764 continue; 2765 2766 chan->chan = ieee80211_chan2ieee(ic, c); 2767 chan->flags = 0; 2768 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2769 chan->flags |= WPI_CHAN_ACTIVE; 2770 if (ic->ic_des_esslen != 0) 2771 chan->flags |= WPI_CHAN_DIRECT; 2772 } 2773 chan->dsp_gain = 0x6e; 2774 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2775 chan->rf_gain = 0x3b; 2776 chan->active = htole16(10); 2777 chan->passive = htole16(110); 2778 } else { 2779 chan->rf_gain = 0x28; 2780 chan->active = htole16(20); 2781 chan->passive = htole16(120); 2782 } 2783 hdr->nchan++; 2784 chan++; 2785 2786 frm += sizeof (struct wpi_scan_chan); 2787 } 2788 hdr->len = htole16(frm - (uint8_t *)hdr); 2789 pktlen = frm - (uint8_t *)cmd; 2790 2791 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2792 NULL, BUS_DMA_NOWAIT); 2793 if (error) { 2794 aprint_error("%s: could not map scan command\n", 2795 sc->sc_dev.dv_xname); 2796 m_freem(data->m); 2797 data->m = NULL; 2798 return error; 2799 } 2800 2801 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2802 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2803 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2804 2805 /* kick cmd ring */ 2806 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2807 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2808 2809 return 0; /* will be notified async. of failure/success */ 2810 } 2811 2812 static int 2813 wpi_config(struct wpi_softc *sc) 2814 { 2815 struct ieee80211com *ic = &sc->sc_ic; 2816 struct ifnet *ifp = ic->ic_ifp; 2817 struct wpi_power power; 2818 struct wpi_bluetooth bluetooth; 2819 struct wpi_node_info node; 2820 int error; 2821 2822 memset(&power, 0, sizeof power); 2823 power.flags = htole32(WPI_POWER_CAM | 0x8); 2824 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2825 if (error != 0) { 2826 aprint_error("%s: could not set power mode\n", 2827 sc->sc_dev.dv_xname); 2828 return error; 2829 } 2830 2831 /* configure bluetooth coexistence */ 2832 memset(&bluetooth, 0, sizeof bluetooth); 2833 bluetooth.flags = 3; 2834 bluetooth.lead = 0xaa; 2835 bluetooth.kill = 1; 2836 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2837 0); 2838 if (error != 0) { 2839 aprint_error( 2840 "%s: could not configure bluetooth coexistence\n", 2841 sc->sc_dev.dv_xname); 2842 return error; 2843 } 2844 2845 /* configure adapter */ 2846 memset(&sc->config, 0, sizeof (struct wpi_config)); 2847 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2848 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2849 /*set default channel*/ 2850 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2851 sc->config.flags = htole32(WPI_CONFIG_TSF); 2852 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2853 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2854 WPI_CONFIG_24GHZ); 2855 } 2856 sc->config.filter = 0; 2857 switch (ic->ic_opmode) { 2858 case IEEE80211_M_STA: 2859 sc->config.mode = WPI_MODE_STA; 2860 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2861 break; 2862 case IEEE80211_M_IBSS: 2863 case IEEE80211_M_AHDEMO: 2864 sc->config.mode = WPI_MODE_IBSS; 2865 break; 2866 case IEEE80211_M_HOSTAP: 2867 sc->config.mode = WPI_MODE_HOSTAP; 2868 break; 2869 case IEEE80211_M_MONITOR: 2870 sc->config.mode = WPI_MODE_MONITOR; 2871 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2872 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2873 break; 2874 } 2875 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2876 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2877 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2878 sizeof (struct wpi_config), 0); 2879 if (error != 0) { 2880 aprint_error("%s: configure command failed\n", 2881 sc->sc_dev.dv_xname); 2882 return error; 2883 } 2884 2885 /* configuration has changed, set Tx power accordingly */ 2886 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2887 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2888 return error; 2889 } 2890 2891 /* add broadcast node */ 2892 memset(&node, 0, sizeof node); 2893 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2894 node.id = WPI_ID_BROADCAST; 2895 node.rate = wpi_plcp_signal(2); 2896 node.action = htole32(WPI_ACTION_SET_RATE); 2897 node.antenna = WPI_ANTENNA_BOTH; 2898 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2899 if (error != 0) { 2900 aprint_error("%s: could not add broadcast node\n", 2901 sc->sc_dev.dv_xname); 2902 return error; 2903 } 2904 2905 if ((error = wpi_mrr_setup(sc)) != 0) { 2906 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2907 return error; 2908 } 2909 2910 return 0; 2911 } 2912 2913 static void 2914 wpi_stop_master(struct wpi_softc *sc) 2915 { 2916 uint32_t tmp; 2917 int ntries; 2918 2919 tmp = WPI_READ(sc, WPI_RESET); 2920 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2921 2922 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2923 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2924 return; /* already asleep */ 2925 2926 for (ntries = 0; ntries < 100; ntries++) { 2927 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2928 break; 2929 DELAY(10); 2930 } 2931 if (ntries == 100) { 2932 aprint_error("%s: timeout waiting for master\n", 2933 sc->sc_dev.dv_xname); 2934 } 2935 } 2936 2937 static int 2938 wpi_power_up(struct wpi_softc *sc) 2939 { 2940 uint32_t tmp; 2941 int ntries; 2942 2943 wpi_mem_lock(sc); 2944 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2945 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2946 wpi_mem_unlock(sc); 2947 2948 for (ntries = 0; ntries < 5000; ntries++) { 2949 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2950 break; 2951 DELAY(10); 2952 } 2953 if (ntries == 5000) { 2954 aprint_error("%s: timeout waiting for NIC to power up\n", 2955 sc->sc_dev.dv_xname); 2956 return ETIMEDOUT; 2957 } 2958 return 0; 2959 } 2960 2961 static int 2962 wpi_reset(struct wpi_softc *sc) 2963 { 2964 uint32_t tmp; 2965 int ntries; 2966 2967 /* clear any pending interrupts */ 2968 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2969 2970 tmp = WPI_READ(sc, WPI_PLL_CTL); 2971 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2972 2973 tmp = WPI_READ(sc, WPI_CHICKEN); 2974 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2975 2976 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2977 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2978 2979 /* wait for clock stabilization */ 2980 for (ntries = 0; ntries < 1000; ntries++) { 2981 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2982 break; 2983 DELAY(10); 2984 } 2985 if (ntries == 1000) { 2986 aprint_error("%s: timeout waiting for clock stabilization\n", 2987 sc->sc_dev.dv_xname); 2988 return ETIMEDOUT; 2989 } 2990 2991 /* initialize EEPROM */ 2992 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2993 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2994 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 2995 return EIO; 2996 } 2997 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2998 2999 return 0; 3000 } 3001 3002 static void 3003 wpi_hw_config(struct wpi_softc *sc) 3004 { 3005 uint32_t rev, hw; 3006 3007 /* voodoo from the reference driver */ 3008 hw = WPI_READ(sc, WPI_HWCONFIG); 3009 3010 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3011 rev = PCI_REVISION(rev); 3012 if ((rev & 0xc0) == 0x40) 3013 hw |= WPI_HW_ALM_MB; 3014 else if (!(rev & 0x80)) 3015 hw |= WPI_HW_ALM_MM; 3016 3017 if (sc->cap == 0x80) 3018 hw |= WPI_HW_SKU_MRC; 3019 3020 hw &= ~WPI_HW_REV_D; 3021 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3022 hw |= WPI_HW_REV_D; 3023 3024 if (sc->type > 1) 3025 hw |= WPI_HW_TYPE_B; 3026 3027 DPRINTF(("setting h/w config %x\n", hw)); 3028 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3029 } 3030 3031 static int 3032 wpi_init(struct ifnet *ifp) 3033 { 3034 struct wpi_softc *sc = ifp->if_softc; 3035 struct ieee80211com *ic = &sc->sc_ic; 3036 uint32_t tmp; 3037 int qid, ntries, error; 3038 3039 wpi_stop(ifp,1); 3040 (void)wpi_reset(sc); 3041 3042 wpi_mem_lock(sc); 3043 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3044 DELAY(20); 3045 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3046 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3047 wpi_mem_unlock(sc); 3048 3049 (void)wpi_power_up(sc); 3050 wpi_hw_config(sc); 3051 3052 /* init Rx ring */ 3053 wpi_mem_lock(sc); 3054 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3055 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3056 offsetof(struct wpi_shared, next)); 3057 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3058 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3059 wpi_mem_unlock(sc); 3060 3061 /* init Tx rings */ 3062 wpi_mem_lock(sc); 3063 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3064 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3065 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3066 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3067 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3068 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3069 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3070 3071 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3072 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3073 3074 for (qid = 0; qid < 6; qid++) { 3075 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3076 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3077 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3078 } 3079 wpi_mem_unlock(sc); 3080 3081 /* clear "radio off" and "disable command" bits (reversed logic) */ 3082 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3083 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3084 3085 /* clear any pending interrupts */ 3086 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3087 /* enable interrupts */ 3088 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3089 3090 /* not sure why/if this is necessary... */ 3091 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3092 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3093 3094 if ((error = wpi_load_firmware(sc)) != 0) { 3095 aprint_error("%s: could not load firmware\n", sc->sc_dev.dv_xname); 3096 goto fail1; 3097 } 3098 3099 /* wait for thermal sensors to calibrate */ 3100 for (ntries = 0; ntries < 1000; ntries++) { 3101 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3102 break; 3103 DELAY(10); 3104 } 3105 if (ntries == 1000) { 3106 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 3107 sc->sc_dev.dv_xname); 3108 error = ETIMEDOUT; 3109 goto fail1; 3110 } 3111 3112 DPRINTF(("temperature %d\n", sc->temp)); 3113 3114 if ((error = wpi_config(sc)) != 0) { 3115 aprint_error("%s: could not configure device\n", 3116 sc->sc_dev.dv_xname); 3117 goto fail1; 3118 } 3119 3120 ifp->if_flags &= ~IFF_OACTIVE; 3121 ifp->if_flags |= IFF_RUNNING; 3122 3123 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3124 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3125 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3126 } 3127 else 3128 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3129 3130 return 0; 3131 3132 fail1: wpi_stop(ifp, 1); 3133 return error; 3134 } 3135 3136 3137 static void 3138 wpi_stop(struct ifnet *ifp, int disable) 3139 { 3140 struct wpi_softc *sc = ifp->if_softc; 3141 struct ieee80211com *ic = &sc->sc_ic; 3142 uint32_t tmp; 3143 int ac; 3144 3145 ifp->if_timer = sc->sc_tx_timer = 0; 3146 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3147 3148 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3149 3150 /* disable interrupts */ 3151 WPI_WRITE(sc, WPI_MASK, 0); 3152 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3153 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3154 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3155 3156 wpi_mem_lock(sc); 3157 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3158 wpi_mem_unlock(sc); 3159 3160 /* reset all Tx rings */ 3161 for (ac = 0; ac < 4; ac++) 3162 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3163 wpi_reset_tx_ring(sc, &sc->cmdq); 3164 3165 /* reset Rx ring */ 3166 wpi_reset_rx_ring(sc, &sc->rxq); 3167 3168 wpi_mem_lock(sc); 3169 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3170 wpi_mem_unlock(sc); 3171 3172 DELAY(5); 3173 3174 wpi_stop_master(sc); 3175 3176 tmp = WPI_READ(sc, WPI_RESET); 3177 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3178 } 3179
Indexes created Thu Oct 02 01:09:59 GMT 2025