if_wpi.c revision 1.25
1 /* $NetBSD: if_wpi.c,v 1.25 2007/10/19 12:00:49 ad 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 1.25 2007/10/19 12:00:49 ad Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 #include "bpfilter.h" 28 29 #include <sys/param.h> 30 #include <sys/sockio.h> 31 #include <sys/sysctl.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/conf.h> 38 #include <sys/kauth.h> 39 #include <sys/callout.h> 40 41 #include <sys/bus.h> 42 #include <machine/endian.h> 43 #include <sys/intr.h> 44 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcidevs.h> 48 49 #if NBPFILTER > 0 50 #include <net/bpf.h> 51 #endif 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 68 #include <dev/firmload.h> 69 70 #include <dev/pci/if_wpireg.h> 71 #include <dev/pci/if_wpivar.h> 72 73 #ifdef WPI_DEBUG 74 #define DPRINTF(x) if (wpi_debug > 0) printf x 75 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 76 int wpi_debug = 1; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n, x) 80 #endif 81 82 /* 83 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 84 */ 85 static const struct ieee80211_rateset wpi_rateset_11a = 86 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 87 88 static const struct ieee80211_rateset wpi_rateset_11b = 89 { 4, { 2, 4, 11, 22 } }; 90 91 static const struct ieee80211_rateset wpi_rateset_11g = 92 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 93 94 static int wpi_match(struct device *, struct cfdata *, void *); 95 static void wpi_attach(struct device *, struct device *, void *); 96 static int wpi_detach(struct device*, int); 97 static void wpi_power(int, void *); 98 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 99 void **, bus_size_t, bus_size_t, int); 100 static void wpi_dma_contig_free(struct wpi_dma_info *); 101 static int wpi_alloc_shared(struct wpi_softc *); 102 static void wpi_free_shared(struct wpi_softc *); 103 static int wpi_alloc_fwmem(struct wpi_softc *); 104 static void wpi_free_fwmem(struct wpi_softc *); 105 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 106 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 107 static int wpi_alloc_rpool(struct wpi_softc *); 108 static void wpi_free_rpool(struct wpi_softc *); 109 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 110 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 111 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 112 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 113 int); 114 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 115 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 116 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 117 static void wpi_newassoc(struct ieee80211_node *, int); 118 static int wpi_media_change(struct ifnet *); 119 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 120 static void wpi_fix_channel(struct ieee80211com *, struct mbuf *); 121 static void wpi_mem_lock(struct wpi_softc *); 122 static void wpi_mem_unlock(struct wpi_softc *); 123 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 124 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 125 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 126 const uint32_t *, int); 127 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 128 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 129 static int wpi_load_firmware(struct wpi_softc *); 130 static void wpi_calib_timeout(void *); 131 static void wpi_iter_func(void *, struct ieee80211_node *); 132 static void wpi_power_calibration(struct wpi_softc *, int); 133 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 134 struct wpi_rx_data *); 135 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 136 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 137 static void wpi_notif_intr(struct wpi_softc *); 138 static int wpi_intr(void *); 139 static void wpi_read_eeprom(struct wpi_softc *); 140 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 141 static void wpi_read_eeprom_group(struct wpi_softc *, int); 142 static uint8_t wpi_plcp_signal(int); 143 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 144 struct ieee80211_node *, int); 145 static void wpi_start(struct ifnet *); 146 static void wpi_watchdog(struct ifnet *); 147 static int wpi_ioctl(struct ifnet *, u_long, void *); 148 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 149 static int wpi_wme_update(struct ieee80211com *); 150 static int wpi_mrr_setup(struct wpi_softc *); 151 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 152 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 153 static int wpi_set_txpower(struct wpi_softc *, 154 struct ieee80211_channel *, int); 155 static int wpi_get_power_index(struct wpi_softc *, 156 struct wpi_power_group *, struct ieee80211_channel *, int); 157 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 158 static int wpi_auth(struct wpi_softc *); 159 static int wpi_scan(struct wpi_softc *, uint16_t); 160 static int wpi_config(struct wpi_softc *); 161 static void wpi_stop_master(struct wpi_softc *); 162 static int wpi_power_up(struct wpi_softc *); 163 static int wpi_reset(struct wpi_softc *); 164 static void wpi_hw_config(struct wpi_softc *); 165 static int wpi_init(struct ifnet *); 166 static void wpi_stop(struct ifnet *, int); 167 168 CFATTACH_DECL(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 powerhook */ 356 sc->powerhook = powerhook_establish(sc->sc_dev.dv_xname, wpi_power, sc); 357 358 #if NBPFILTER > 0 359 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 360 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 361 &sc->sc_drvbpf); 362 363 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 364 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 365 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 366 367 sc->sc_txtap_len = sizeof sc->sc_txtapu; 368 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 369 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 370 #endif 371 372 ieee80211_announce(ic); 373 374 return; 375 376 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 377 fail3: while (--ac >= 0) 378 wpi_free_tx_ring(sc, &sc->txq[ac]); 379 wpi_free_rpool(sc); 380 fail2: wpi_free_shared(sc); 381 fail1: wpi_free_fwmem(sc); 382 } 383 384 static int 385 wpi_detach(struct device* self, int flags __unused) 386 { 387 struct wpi_softc *sc = (struct wpi_softc *)self; 388 struct ifnet *ifp = sc->sc_ic.ic_ifp; 389 int ac; 390 391 wpi_stop(ifp, 1); 392 393 #if NBPFILTER > 0 394 if (ifp != NULL) 395 bpfdetach(ifp); 396 #endif 397 ieee80211_ifdetach(&sc->sc_ic); 398 if (ifp != NULL) 399 if_detach(ifp); 400 401 for (ac = 0; ac < 4; ac++) 402 wpi_free_tx_ring(sc, &sc->txq[ac]); 403 wpi_free_tx_ring(sc, &sc->cmdq); 404 wpi_free_rx_ring(sc, &sc->rxq); 405 wpi_free_rpool(sc); 406 wpi_free_shared(sc); 407 408 if (sc->sc_ih != NULL) { 409 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 410 sc->sc_ih = NULL; 411 } 412 413 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 414 415 return 0; 416 } 417 418 static void 419 wpi_power(int why, void *arg) 420 { 421 struct wpi_softc *sc = arg; 422 struct ifnet *ifp; 423 pcireg_t data; 424 int s; 425 426 if (why != PWR_RESUME) 427 return; 428 429 /* clear device specific PCI configuration register 0x41 */ 430 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 431 data &= ~0x0000ff00; 432 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 433 434 s = splnet(); 435 ifp = sc->sc_ic.ic_ifp; 436 if (ifp->if_flags & IFF_UP) { 437 ifp->if_init(ifp); 438 if (ifp->if_flags & IFF_RUNNING) 439 ifp->if_start(ifp); 440 } 441 splx(s); 442 } 443 444 static int 445 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 446 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 447 { 448 int nsegs, error; 449 450 dma->tag = tag; 451 dma->size = size; 452 453 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 454 if (error != 0) 455 goto fail; 456 457 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 458 flags); 459 if (error != 0) 460 goto fail; 461 462 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 463 if (error != 0) 464 goto fail; 465 466 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 467 if (error != 0) 468 goto fail; 469 470 memset(dma->vaddr, 0, size); 471 472 dma->paddr = dma->map->dm_segs[0].ds_addr; 473 if (kvap != NULL) 474 *kvap = dma->vaddr; 475 476 return 0; 477 478 fail: wpi_dma_contig_free(dma); 479 return error; 480 } 481 482 static void 483 wpi_dma_contig_free(struct wpi_dma_info *dma) 484 { 485 if (dma->map != NULL) { 486 if (dma->vaddr != NULL) { 487 bus_dmamap_unload(dma->tag, dma->map); 488 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 489 bus_dmamem_free(dma->tag, &dma->seg, 1); 490 dma->vaddr = NULL; 491 } 492 bus_dmamap_destroy(dma->tag, dma->map); 493 dma->map = NULL; 494 } 495 } 496 497 /* 498 * Allocate a shared page between host and NIC. 499 */ 500 static int 501 wpi_alloc_shared(struct wpi_softc *sc) 502 { 503 int error; 504 /* must be aligned on a 4K-page boundary */ 505 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 506 (void **)&sc->shared, sizeof (struct wpi_shared), 507 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 508 if (error != 0) 509 aprint_error( 510 "%s: could not allocate shared area DMA memory\n", 511 sc->sc_dev.dv_xname); 512 513 return error; 514 } 515 516 static void 517 wpi_free_shared(struct wpi_softc *sc) 518 { 519 wpi_dma_contig_free(&sc->shared_dma); 520 } 521 522 /* 523 * Allocate DMA-safe memory for firmware transfer. 524 */ 525 static int 526 wpi_alloc_fwmem(struct wpi_softc *sc) 527 { 528 int error; 529 /* allocate enough contiguous space to store text and data */ 530 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 531 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 532 BUS_DMA_NOWAIT); 533 534 if (error != 0) 535 aprint_error( 536 "%s: could not allocate firmware transfer area" 537 "DMA memory\n", sc->sc_dev.dv_xname); 538 return error; 539 } 540 541 static void 542 wpi_free_fwmem(struct wpi_softc *sc) 543 { 544 wpi_dma_contig_free(&sc->fw_dma); 545 } 546 547 548 static struct wpi_rbuf * 549 wpi_alloc_rbuf(struct wpi_softc *sc) 550 { 551 struct wpi_rbuf *rbuf; 552 553 rbuf = SLIST_FIRST(&sc->rxq.freelist); 554 if (rbuf == NULL) 555 return NULL; 556 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 557 sc->rxq.nb_free_entries --; 558 559 return rbuf; 560 } 561 562 /* 563 * This is called automatically by the network stack when the mbuf to which our 564 * Rx buffer is attached is freed. 565 */ 566 static void 567 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 568 { 569 struct wpi_rbuf *rbuf = arg; 570 struct wpi_softc *sc = rbuf->sc; 571 int s; 572 573 /* put the buffer back in the free list */ 574 575 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 576 sc->rxq.nb_free_entries ++; 577 578 if (__predict_true(m != NULL)) { 579 s = splvm(); 580 pool_cache_put(&mbpool_cache, m); 581 splx(s); 582 } 583 } 584 585 static int 586 wpi_alloc_rpool(struct wpi_softc *sc) 587 { 588 struct wpi_rx_ring *ring = &sc->rxq; 589 struct wpi_rbuf *rbuf; 590 int i, error; 591 592 /* allocate a big chunk of DMA'able memory.. */ 593 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 594 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 595 if (error != 0) { 596 aprint_normal("%s: could not allocate Rx buffers DMA memory\n", 597 sc->sc_dev.dv_xname); 598 return error; 599 } 600 601 /* ..and split it into 3KB chunks */ 602 SLIST_INIT(&ring->freelist); 603 for (i = 0; i < WPI_RBUF_COUNT; i++) { 604 rbuf = &ring->rbuf[i]; 605 rbuf->sc = sc; /* backpointer for callbacks */ 606 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 607 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 608 609 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 610 } 611 612 ring->nb_free_entries = WPI_RBUF_COUNT; 613 return 0; 614 } 615 616 static void 617 wpi_free_rpool(struct wpi_softc *sc) 618 { 619 wpi_dma_contig_free(&sc->rxq.buf_dma); 620 } 621 622 static int 623 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 624 { 625 struct wpi_rx_data *data; 626 struct wpi_rbuf *rbuf; 627 int i, error; 628 629 ring->cur = 0; 630 631 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 632 (void **)&ring->desc, 633 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 634 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 635 if (error != 0) { 636 aprint_error("%s: could not allocate rx ring DMA memory\n", 637 sc->sc_dev.dv_xname); 638 goto fail; 639 } 640 641 /* 642 * Setup Rx buffers. 643 */ 644 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 645 data = &ring->data[i]; 646 647 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 648 if (data->m == NULL) { 649 aprint_error("%s: could not allocate rx mbuf\n", 650 sc->sc_dev.dv_xname); 651 error = ENOMEM; 652 goto fail; 653 } 654 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 655 m_freem(data->m); 656 data->m = NULL; 657 aprint_error("%s: could not allocate rx cluster\n", 658 sc->sc_dev.dv_xname); 659 error = ENOMEM; 660 goto fail; 661 } 662 /* attach Rx buffer to mbuf */ 663 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 664 rbuf); 665 data->m->m_flags |= M_EXT_RW; 666 667 ring->desc[i] = htole32(rbuf->paddr); 668 } 669 670 return 0; 671 672 fail: wpi_free_rx_ring(sc, ring); 673 return error; 674 } 675 676 static void 677 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 678 { 679 int ntries; 680 681 wpi_mem_lock(sc); 682 683 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 684 for (ntries = 0; ntries < 100; ntries++) { 685 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 686 break; 687 DELAY(10); 688 } 689 #ifdef WPI_DEBUG 690 if (ntries == 100 && wpi_debug > 0) 691 aprint_error("%s: timeout resetting Rx ring\n", 692 sc->sc_dev.dv_xname); 693 #endif 694 wpi_mem_unlock(sc); 695 696 ring->cur = 0; 697 } 698 699 static void 700 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 701 { 702 int i; 703 704 wpi_dma_contig_free(&ring->desc_dma); 705 706 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 707 if (ring->data[i].m != NULL) 708 m_freem(ring->data[i].m); 709 } 710 } 711 712 static int 713 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 714 int qid) 715 { 716 struct wpi_tx_data *data; 717 int i, error; 718 719 ring->qid = qid; 720 ring->count = count; 721 ring->queued = 0; 722 ring->cur = 0; 723 724 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 725 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 726 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 727 if (error != 0) { 728 aprint_error("%s: could not allocate tx ring DMA memory\n", 729 sc->sc_dev.dv_xname); 730 goto fail; 731 } 732 733 /* update shared page with ring's base address */ 734 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 735 736 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 737 (void **)&ring->cmd, 738 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 739 if (error != 0) { 740 aprint_error("%s: could not allocate tx cmd DMA memory\n", 741 sc->sc_dev.dv_xname); 742 goto fail; 743 } 744 745 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 746 M_NOWAIT); 747 if (ring->data == NULL) { 748 aprint_error("%s: could not allocate tx data slots\n", 749 sc->sc_dev.dv_xname); 750 goto fail; 751 } 752 753 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 754 755 for (i = 0; i < count; i++) { 756 data = &ring->data[i]; 757 758 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 759 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 760 &data->map); 761 if (error != 0) { 762 aprint_error("%s: could not create tx buf DMA map\n", 763 sc->sc_dev.dv_xname); 764 goto fail; 765 } 766 } 767 768 return 0; 769 770 fail: wpi_free_tx_ring(sc, ring); 771 return error; 772 } 773 774 static void 775 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 776 { 777 struct wpi_tx_data *data; 778 int i, ntries; 779 780 wpi_mem_lock(sc); 781 782 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 783 for (ntries = 0; ntries < 100; ntries++) { 784 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 785 break; 786 DELAY(10); 787 } 788 #ifdef WPI_DEBUG 789 if (ntries == 100 && wpi_debug > 0) { 790 aprint_error("%s: timeout resetting Tx ring %d\n", 791 sc->sc_dev.dv_xname, ring->qid); 792 } 793 #endif 794 wpi_mem_unlock(sc); 795 796 for (i = 0; i < ring->count; i++) { 797 data = &ring->data[i]; 798 799 if (data->m != NULL) { 800 bus_dmamap_unload(sc->sc_dmat, data->map); 801 m_freem(data->m); 802 data->m = NULL; 803 } 804 } 805 806 ring->queued = 0; 807 ring->cur = 0; 808 } 809 810 static void 811 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 812 { 813 struct wpi_tx_data *data; 814 int i; 815 816 wpi_dma_contig_free(&ring->desc_dma); 817 wpi_dma_contig_free(&ring->cmd_dma); 818 819 if (ring->data != NULL) { 820 for (i = 0; i < ring->count; i++) { 821 data = &ring->data[i]; 822 823 if (data->m != NULL) { 824 bus_dmamap_unload(sc->sc_dmat, data->map); 825 m_freem(data->m); 826 } 827 } 828 free(ring->data, M_DEVBUF); 829 } 830 } 831 832 /*ARGUSED*/ 833 static struct ieee80211_node * 834 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 835 { 836 struct wpi_node *wn; 837 838 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 839 840 if (wn != NULL) 841 memset(wn, 0, sizeof (struct wpi_node)); 842 return (struct ieee80211_node *)wn; 843 } 844 845 static void 846 wpi_newassoc(struct ieee80211_node *ni, int isnew) 847 { 848 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 849 int i; 850 851 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 852 853 /* set rate to some reasonable initial value */ 854 for (i = ni->ni_rates.rs_nrates - 1; 855 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 856 i--); 857 ni->ni_txrate = i; 858 } 859 860 static int 861 wpi_media_change(struct ifnet *ifp) 862 { 863 int error; 864 865 error = ieee80211_media_change(ifp); 866 if (error != ENETRESET) 867 return error; 868 869 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 870 wpi_init(ifp); 871 872 return 0; 873 } 874 875 static int 876 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 877 { 878 struct ifnet *ifp = ic->ic_ifp; 879 struct wpi_softc *sc = ifp->if_softc; 880 struct ieee80211_node *ni; 881 int error; 882 883 callout_stop(&sc->calib_to); 884 885 switch (nstate) { 886 case IEEE80211_S_SCAN: 887 888 if (sc->is_scanning) 889 break; 890 891 sc->is_scanning = true; 892 ieee80211_node_table_reset(&ic->ic_scan); 893 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 894 895 /* make the link LED blink while we're scanning */ 896 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 897 898 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 899 aprint_error("%s: could not initiate scan\n", 900 sc->sc_dev.dv_xname); 901 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 902 return error; 903 } 904 905 ic->ic_state = nstate; 906 return 0; 907 908 case IEEE80211_S_ASSOC: 909 if (ic->ic_state != IEEE80211_S_RUN) 910 break; 911 /* FALLTHROUGH */ 912 case IEEE80211_S_AUTH: 913 sc->config.associd = 0; 914 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 915 if ((error = wpi_auth(sc)) != 0) { 916 aprint_error("%s: could not send authentication request\n", 917 sc->sc_dev.dv_xname); 918 return error; 919 } 920 break; 921 922 case IEEE80211_S_RUN: 923 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 924 /* link LED blinks while monitoring */ 925 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 926 break; 927 } 928 929 ni = ic->ic_bss; 930 931 if (ic->ic_opmode != IEEE80211_M_STA) { 932 (void) wpi_auth(sc); /* XXX */ 933 wpi_setup_beacon(sc, ni); 934 } 935 936 wpi_enable_tsf(sc, ni); 937 938 /* update adapter's configuration */ 939 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 940 /* short preamble/slot time are negotiated when associating */ 941 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 942 WPI_CONFIG_SHSLOT); 943 if (ic->ic_flags & IEEE80211_F_SHSLOT) 944 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 945 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 946 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 947 sc->config.filter |= htole32(WPI_FILTER_BSS); 948 if (ic->ic_opmode != IEEE80211_M_STA) 949 sc->config.filter |= htole32(WPI_FILTER_BEACON); 950 951 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 952 953 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 954 sc->config.flags)); 955 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 956 sizeof (struct wpi_config), 1); 957 if (error != 0) { 958 aprint_error("%s: could not update configuration\n", 959 sc->sc_dev.dv_xname); 960 return error; 961 } 962 963 /* configuration has changed, set Tx power accordingly */ 964 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 965 aprint_error("%s: could not set Tx power\n", 966 sc->sc_dev.dv_xname); 967 return error; 968 } 969 970 if (ic->ic_opmode == IEEE80211_M_STA) { 971 /* fake a join to init the tx rate */ 972 wpi_newassoc(ni, 1); 973 } 974 975 /* start periodic calibration timer */ 976 sc->calib_cnt = 0; 977 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 978 979 /* link LED always on while associated */ 980 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 981 break; 982 983 case IEEE80211_S_INIT: 984 sc->is_scanning = false; 985 break; 986 } 987 988 return sc->sc_newstate(ic, nstate, arg); 989 } 990 991 /* 992 * XXX: Hack to set the current channel to the value advertised in beacons or 993 * probe responses. Only used during AP detection. 994 * XXX: Duplicated from if_iwi.c 995 */ 996 static void 997 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 998 { 999 struct ieee80211_frame *wh; 1000 uint8_t subtype; 1001 uint8_t *frm, *efrm; 1002 1003 wh = mtod(m, struct ieee80211_frame *); 1004 1005 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1006 return; 1007 1008 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1009 1010 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1011 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1012 return; 1013 1014 frm = (uint8_t *)(wh + 1); 1015 efrm = mtod(m, uint8_t *) + m->m_len; 1016 1017 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1018 while (frm < efrm) { 1019 if (*frm == IEEE80211_ELEMID_DSPARMS) 1020 #if IEEE80211_CHAN_MAX < 255 1021 if (frm[2] <= IEEE80211_CHAN_MAX) 1022 #endif 1023 ic->ic_curchan = &ic->ic_channels[frm[2]]; 1024 1025 frm += frm[1] + 2; 1026 } 1027 } 1028 1029 /* 1030 * Grab exclusive access to NIC memory. 1031 */ 1032 static void 1033 wpi_mem_lock(struct wpi_softc *sc) 1034 { 1035 uint32_t tmp; 1036 int ntries; 1037 1038 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1039 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1040 1041 /* spin until we actually get the lock */ 1042 for (ntries = 0; ntries < 1000; ntries++) { 1043 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1044 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1045 break; 1046 DELAY(10); 1047 } 1048 if (ntries == 1000) 1049 aprint_error("%s: could not lock memory\n", sc->sc_dev.dv_xname); 1050 } 1051 1052 /* 1053 * Release lock on NIC memory. 1054 */ 1055 static void 1056 wpi_mem_unlock(struct wpi_softc *sc) 1057 { 1058 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1059 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1060 } 1061 1062 static uint32_t 1063 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1064 { 1065 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1066 return WPI_READ(sc, WPI_READ_MEM_DATA); 1067 } 1068 1069 static void 1070 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1071 { 1072 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1073 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1074 } 1075 1076 static void 1077 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1078 const uint32_t *data, int wlen) 1079 { 1080 for (; wlen > 0; wlen--, data++, addr += 4) 1081 wpi_mem_write(sc, addr, *data); 1082 } 1083 1084 1085 /* 1086 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1087 * instead of using the traditional bit-bang method. 1088 */ 1089 static int 1090 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1091 { 1092 uint8_t *out = data; 1093 uint32_t val; 1094 int ntries; 1095 1096 wpi_mem_lock(sc); 1097 for (; len > 0; len -= 2, addr++) { 1098 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1099 1100 for (ntries = 0; ntries < 10; ntries++) { 1101 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1102 WPI_EEPROM_READY) 1103 break; 1104 DELAY(5); 1105 } 1106 if (ntries == 10) { 1107 aprint_error("%s: could not read EEPROM\n", 1108 sc->sc_dev.dv_xname); 1109 return ETIMEDOUT; 1110 } 1111 *out++ = val >> 16; 1112 if (len > 1) 1113 *out++ = val >> 24; 1114 } 1115 wpi_mem_unlock(sc); 1116 1117 return 0; 1118 } 1119 1120 /* 1121 * The firmware boot code is small and is intended to be copied directly into 1122 * the NIC internal memory. 1123 */ 1124 int 1125 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1126 { 1127 int ntries; 1128 1129 size /= sizeof (uint32_t); 1130 1131 wpi_mem_lock(sc); 1132 1133 /* copy microcode image into NIC memory */ 1134 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1135 (const uint32_t *)ucode, size); 1136 1137 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1138 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1139 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1140 1141 /* run microcode */ 1142 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1143 1144 /* wait for transfer to complete */ 1145 for (ntries = 0; ntries < 1000; ntries++) { 1146 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1147 break; 1148 DELAY(10); 1149 } 1150 if (ntries == 1000) { 1151 wpi_mem_unlock(sc); 1152 printf("%s: could not load boot firmware\n", 1153 sc->sc_dev.dv_xname); 1154 return ETIMEDOUT; 1155 } 1156 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1157 1158 wpi_mem_unlock(sc); 1159 1160 return 0; 1161 } 1162 1163 static int 1164 wpi_load_firmware(struct wpi_softc *sc) 1165 { 1166 struct wpi_dma_info *dma = &sc->fw_dma; 1167 struct wpi_firmware_hdr hdr; 1168 const uint8_t *init_text, *init_data, *main_text, *main_data; 1169 const uint8_t *boot_text; 1170 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1171 uint32_t boot_textsz; 1172 firmware_handle_t fw; 1173 u_char *dfw; 1174 size_t size; 1175 int error; 1176 1177 /* load firmware image from disk */ 1178 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1179 aprint_error("%s: could not read firmware file\n", 1180 sc->sc_dev.dv_xname); 1181 goto fail1; 1182 } 1183 1184 size = firmware_get_size(fw); 1185 1186 /* extract firmware header information */ 1187 if (size < sizeof (struct wpi_firmware_hdr)) { 1188 aprint_error("%s: truncated firmware header: %zu bytes\n", 1189 sc->sc_dev.dv_xname, size); 1190 error = EINVAL; 1191 goto fail2; 1192 } 1193 1194 if ((error = firmware_read(fw, 0, &hdr, 1195 sizeof (struct wpi_firmware_hdr))) != 0) { 1196 aprint_error("%s: can't get firmware header\n", 1197 sc->sc_dev.dv_xname); 1198 goto fail2; 1199 } 1200 1201 main_textsz = le32toh(hdr.main_textsz); 1202 main_datasz = le32toh(hdr.main_datasz); 1203 init_textsz = le32toh(hdr.init_textsz); 1204 init_datasz = le32toh(hdr.init_datasz); 1205 boot_textsz = le32toh(hdr.boot_textsz); 1206 1207 /* sanity-check firmware segments sizes */ 1208 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1209 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1210 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1211 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1212 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1213 (boot_textsz & 3) != 0) { 1214 printf("%s: invalid firmware header\n", sc->sc_dev.dv_xname); 1215 error = EINVAL; 1216 goto fail2; 1217 } 1218 1219 /* check that all firmware segments are present */ 1220 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1221 main_datasz + init_textsz + init_datasz + boot_textsz) { 1222 aprint_error("%s: firmware file too short: %zu bytes\n", 1223 sc->sc_dev.dv_xname, size); 1224 error = EINVAL; 1225 goto fail2; 1226 } 1227 1228 dfw = firmware_malloc(size); 1229 if (dfw == NULL) { 1230 aprint_error("%s: not enough memory to stock firmware\n", 1231 sc->sc_dev.dv_xname); 1232 error = ENOMEM; 1233 goto fail2; 1234 } 1235 1236 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1237 aprint_error("%s: can't get firmware\n", 1238 sc->sc_dev.dv_xname); 1239 goto fail2; 1240 } 1241 1242 /* get pointers to firmware segments */ 1243 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1244 main_data = main_text + main_textsz; 1245 init_text = main_data + main_datasz; 1246 init_data = init_text + init_textsz; 1247 boot_text = init_data + init_datasz; 1248 1249 /* copy initialization images into pre-allocated DMA-safe memory */ 1250 memcpy(dma->vaddr, init_data, init_datasz); 1251 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1252 1253 /* tell adapter where to find initialization images */ 1254 wpi_mem_lock(sc); 1255 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1256 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1257 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1258 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1259 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1260 wpi_mem_unlock(sc); 1261 1262 /* load firmware boot code */ 1263 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1264 printf("%s: could not load boot firmware\n", 1265 sc->sc_dev.dv_xname); 1266 goto fail3; 1267 } 1268 1269 /* now press "execute" ;-) */ 1270 WPI_WRITE(sc, WPI_RESET, 0); 1271 1272 /* ..and wait at most one second for adapter to initialize */ 1273 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1274 /* this isn't what was supposed to happen.. */ 1275 aprint_error("%s: timeout waiting for adapter to initialize\n", 1276 sc->sc_dev.dv_xname); 1277 } 1278 1279 /* copy runtime images into pre-allocated DMA-safe memory */ 1280 memcpy(dma->vaddr, main_data, main_datasz); 1281 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1282 1283 /* tell adapter where to find runtime images */ 1284 wpi_mem_lock(sc); 1285 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1286 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1287 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1288 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1289 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1290 wpi_mem_unlock(sc); 1291 1292 /* wait at most one second for second alive notification */ 1293 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1294 /* this isn't what was supposed to happen.. */ 1295 printf("%s: timeout waiting for adapter to initialize\n", 1296 sc->sc_dev.dv_xname); 1297 } 1298 1299 1300 fail3: firmware_free(dfw,size); 1301 fail2: firmware_close(fw); 1302 fail1: return error; 1303 } 1304 1305 static void 1306 wpi_calib_timeout(void *arg) 1307 { 1308 struct wpi_softc *sc = arg; 1309 struct ieee80211com *ic = &sc->sc_ic; 1310 int temp, s; 1311 1312 /* automatic rate control triggered every 500ms */ 1313 if (ic->ic_fixed_rate == -1) { 1314 s = splnet(); 1315 if (ic->ic_opmode == IEEE80211_M_STA) 1316 wpi_iter_func(sc, ic->ic_bss); 1317 else 1318 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1319 splx(s); 1320 } 1321 1322 /* update sensor data */ 1323 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1324 1325 /* automatic power calibration every 60s */ 1326 if (++sc->calib_cnt >= 120) { 1327 wpi_power_calibration(sc, temp); 1328 sc->calib_cnt = 0; 1329 } 1330 1331 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 1332 } 1333 1334 static void 1335 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1336 { 1337 struct wpi_softc *sc = arg; 1338 struct wpi_node *wn = (struct wpi_node *)ni; 1339 1340 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1341 } 1342 1343 /* 1344 * This function is called periodically (every 60 seconds) to adjust output 1345 * power to temperature changes. 1346 */ 1347 void 1348 wpi_power_calibration(struct wpi_softc *sc, int temp) 1349 { 1350 /* sanity-check read value */ 1351 if (temp < -260 || temp > 25) { 1352 /* this can't be correct, ignore */ 1353 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1354 return; 1355 } 1356 1357 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1358 1359 /* adjust Tx power if need be */ 1360 if (abs(temp - sc->temp) <= 6) 1361 return; 1362 1363 sc->temp = temp; 1364 1365 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1366 /* just warn, too bad for the automatic calibration... */ 1367 aprint_error("%s: could not adjust Tx power\n", 1368 sc->sc_dev.dv_xname); 1369 } 1370 } 1371 1372 static void 1373 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1374 struct wpi_rx_data *data) 1375 { 1376 struct ieee80211com *ic = &sc->sc_ic; 1377 struct ifnet *ifp = ic->ic_ifp; 1378 struct wpi_rx_ring *ring = &sc->rxq; 1379 struct wpi_rx_stat *stat; 1380 struct wpi_rx_head *head; 1381 struct wpi_rx_tail *tail; 1382 struct wpi_rbuf *rbuf; 1383 struct ieee80211_frame *wh; 1384 struct ieee80211_node *ni; 1385 struct mbuf *m, *mnew; 1386 int data_off ; 1387 1388 stat = (struct wpi_rx_stat *)(desc + 1); 1389 1390 if (stat->len > WPI_STAT_MAXLEN) { 1391 aprint_error("%s: invalid rx statistic header\n", 1392 sc->sc_dev.dv_xname); 1393 ifp->if_ierrors++; 1394 return; 1395 } 1396 1397 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1398 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1399 1400 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1401 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1402 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1403 le64toh(tail->tstamp))); 1404 1405 /* 1406 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1407 * to radiotap in monitor mode). 1408 */ 1409 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1410 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1411 ifp->if_ierrors++; 1412 return; 1413 } 1414 1415 /* Compute where are the useful datas */ 1416 data_off = (char*)(head + 1) - mtod(data->m, char*); 1417 1418 /* 1419 * If the number of free entry is too low 1420 * just dup the data->m socket and reuse the same rbuf entry 1421 */ 1422 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1423 1424 /* Prepare the mbuf for the m_dup */ 1425 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1426 data->m->m_data = (char*) data->m->m_data + data_off; 1427 1428 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1429 1430 /* Restore the m_data pointer for future use */ 1431 data->m->m_data = (char*) data->m->m_data - data_off; 1432 1433 if (m == NULL) { 1434 ifp->if_ierrors++; 1435 return; 1436 } 1437 } else { 1438 1439 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1440 if (mnew == NULL) { 1441 ifp->if_ierrors++; 1442 return; 1443 } 1444 1445 rbuf = wpi_alloc_rbuf(sc); 1446 KASSERT(rbuf != NULL); 1447 1448 /* attach Rx buffer to mbuf */ 1449 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1450 rbuf); 1451 mnew->m_flags |= M_EXT_RW; 1452 1453 m = data->m; 1454 data->m = mnew; 1455 1456 /* update Rx descriptor */ 1457 ring->desc[ring->cur] = htole32(rbuf->paddr); 1458 1459 m->m_data = (char*)m->m_data + data_off; 1460 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1461 } 1462 1463 /* finalize mbuf */ 1464 m->m_pkthdr.rcvif = ifp; 1465 1466 if (ic->ic_state == IEEE80211_S_SCAN) 1467 wpi_fix_channel(ic, m); 1468 1469 #if NBPFILTER > 0 1470 if (sc->sc_drvbpf != NULL) { 1471 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1472 1473 tap->wr_flags = 0; 1474 tap->wr_chan_freq = 1475 htole16(ic->ic_channels[head->chan].ic_freq); 1476 tap->wr_chan_flags = 1477 htole16(ic->ic_channels[head->chan].ic_flags); 1478 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1479 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1480 tap->wr_tsft = tail->tstamp; 1481 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1482 switch (head->rate) { 1483 /* CCK rates */ 1484 case 10: tap->wr_rate = 2; break; 1485 case 20: tap->wr_rate = 4; break; 1486 case 55: tap->wr_rate = 11; break; 1487 case 110: tap->wr_rate = 22; break; 1488 /* OFDM rates */ 1489 case 0xd: tap->wr_rate = 12; break; 1490 case 0xf: tap->wr_rate = 18; break; 1491 case 0x5: tap->wr_rate = 24; break; 1492 case 0x7: tap->wr_rate = 36; break; 1493 case 0x9: tap->wr_rate = 48; break; 1494 case 0xb: tap->wr_rate = 72; break; 1495 case 0x1: tap->wr_rate = 96; break; 1496 case 0x3: tap->wr_rate = 108; break; 1497 /* unknown rate: should not happen */ 1498 default: tap->wr_rate = 0; 1499 } 1500 if (le16toh(head->flags) & 0x4) 1501 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1502 1503 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1504 } 1505 #endif 1506 1507 /* grab a reference to the source node */ 1508 wh = mtod(m, struct ieee80211_frame *); 1509 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1510 1511 /* send the frame to the 802.11 layer */ 1512 ieee80211_input(ic, m, ni, stat->rssi, 0); 1513 1514 /* release node reference */ 1515 ieee80211_free_node(ni); 1516 } 1517 1518 static void 1519 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1520 { 1521 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1522 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1523 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1524 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1525 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1526 1527 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1528 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1529 stat->nkill, stat->rate, le32toh(stat->duration), 1530 le32toh(stat->status))); 1531 1532 /* 1533 * Update rate control statistics for the node. 1534 * XXX we should not count mgmt frames since they're always sent at 1535 * the lowest available bit-rate. 1536 */ 1537 wn->amn.amn_txcnt++; 1538 if (stat->ntries > 0) { 1539 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1540 wn->amn.amn_retrycnt++; 1541 } 1542 1543 if ((le32toh(stat->status) & 0xff) != 1) 1544 ifp->if_oerrors++; 1545 else 1546 ifp->if_opackets++; 1547 1548 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1549 m_freem(txdata->m); 1550 txdata->m = NULL; 1551 ieee80211_free_node(txdata->ni); 1552 txdata->ni = NULL; 1553 1554 ring->queued--; 1555 1556 sc->sc_tx_timer = 0; 1557 ifp->if_flags &= ~IFF_OACTIVE; 1558 wpi_start(ifp); 1559 } 1560 1561 static void 1562 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1563 { 1564 struct wpi_tx_ring *ring = &sc->cmdq; 1565 struct wpi_tx_data *data; 1566 1567 if ((desc->qid & 7) != 4) 1568 return; /* not a command ack */ 1569 1570 data = &ring->data[desc->idx]; 1571 1572 /* if the command was mapped in a mbuf, free it */ 1573 if (data->m != NULL) { 1574 bus_dmamap_unload(sc->sc_dmat, data->map); 1575 m_freem(data->m); 1576 data->m = NULL; 1577 } 1578 1579 wakeup(&ring->cmd[desc->idx]); 1580 } 1581 1582 static void 1583 wpi_notif_intr(struct wpi_softc *sc) 1584 { 1585 struct ieee80211com *ic = &sc->sc_ic; 1586 struct ifnet *ifp = ic->ic_ifp; 1587 struct wpi_rx_desc *desc; 1588 struct wpi_rx_data *data; 1589 uint32_t hw; 1590 1591 hw = le32toh(sc->shared->next); 1592 while (sc->rxq.cur != hw) { 1593 data = &sc->rxq.data[sc->rxq.cur]; 1594 1595 desc = mtod(data->m, struct wpi_rx_desc *); 1596 1597 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1598 "len=%d\n", desc->qid, desc->idx, desc->flags, 1599 desc->type, le32toh(desc->len))); 1600 1601 if (!(desc->qid & 0x80)) /* reply to a command */ 1602 wpi_cmd_intr(sc, desc); 1603 1604 switch (desc->type) { 1605 case WPI_RX_DONE: 1606 /* a 802.11 frame was received */ 1607 wpi_rx_intr(sc, desc, data); 1608 break; 1609 1610 case WPI_TX_DONE: 1611 /* a 802.11 frame has been transmitted */ 1612 wpi_tx_intr(sc, desc); 1613 break; 1614 1615 case WPI_UC_READY: 1616 { 1617 struct wpi_ucode_info *uc = 1618 (struct wpi_ucode_info *)(desc + 1); 1619 1620 /* the microcontroller is ready */ 1621 DPRINTF(("microcode alive notification version %x " 1622 "alive %x\n", le32toh(uc->version), 1623 le32toh(uc->valid))); 1624 1625 if (le32toh(uc->valid) != 1) { 1626 aprint_error("%s: microcontroller " 1627 "initialization failed\n", 1628 sc->sc_dev.dv_xname); 1629 } 1630 break; 1631 } 1632 case WPI_STATE_CHANGED: 1633 { 1634 uint32_t *status = (uint32_t *)(desc + 1); 1635 1636 /* enabled/disabled notification */ 1637 DPRINTF(("state changed to %x\n", le32toh(*status))); 1638 1639 if (le32toh(*status) & 1) { 1640 /* the radio button has to be pushed */ 1641 aprint_error("%s: Radio transmitter is off\n", 1642 sc->sc_dev.dv_xname); 1643 /* turn the interface down */ 1644 ifp->if_flags &= ~IFF_UP; 1645 wpi_stop(ifp, 1); 1646 return; /* no further processing */ 1647 } 1648 break; 1649 } 1650 case WPI_START_SCAN: 1651 { 1652 struct wpi_start_scan *scan = 1653 (struct wpi_start_scan *)(desc + 1); 1654 1655 DPRINTFN(2, ("scanning channel %d status %x\n", 1656 scan->chan, le32toh(scan->status))); 1657 1658 /* fix current channel */ 1659 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1660 break; 1661 } 1662 case WPI_STOP_SCAN: 1663 { 1664 struct wpi_stop_scan *scan = 1665 (struct wpi_stop_scan *)(desc + 1); 1666 1667 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1668 scan->nchan, scan->status, scan->chan)); 1669 1670 if (scan->status == 1 && scan->chan <= 14) { 1671 /* 1672 * We just finished scanning 802.11g channels, 1673 * start scanning 802.11a ones. 1674 */ 1675 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1676 break; 1677 } 1678 sc->is_scanning = false; 1679 ieee80211_end_scan(ic); 1680 break; 1681 } 1682 } 1683 1684 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1685 } 1686 1687 /* tell the firmware what we have processed */ 1688 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1689 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1690 } 1691 1692 static int 1693 wpi_intr(void *arg) 1694 { 1695 struct wpi_softc *sc = arg; 1696 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1697 uint32_t r; 1698 1699 r = WPI_READ(sc, WPI_INTR); 1700 if (r == 0 || r == 0xffffffff) 1701 return 0; /* not for us */ 1702 1703 DPRINTFN(5, ("interrupt reg %x\n", r)); 1704 1705 /* disable interrupts */ 1706 WPI_WRITE(sc, WPI_MASK, 0); 1707 /* ack interrupts */ 1708 WPI_WRITE(sc, WPI_INTR, r); 1709 1710 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1711 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1712 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1713 wpi_stop(sc->sc_ic.ic_ifp, 1); 1714 return 1; 1715 } 1716 1717 if (r & WPI_RX_INTR) 1718 wpi_notif_intr(sc); 1719 1720 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1721 wakeup(sc); 1722 1723 /* re-enable interrupts */ 1724 if (ifp->if_flags & IFF_UP) 1725 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1726 1727 return 1; 1728 } 1729 1730 static uint8_t 1731 wpi_plcp_signal(int rate) 1732 { 1733 switch (rate) { 1734 /* CCK rates (returned values are device-dependent) */ 1735 case 2: return 10; 1736 case 4: return 20; 1737 case 11: return 55; 1738 case 22: return 110; 1739 1740 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1741 /* R1-R4, (u)ral is R4-R1 */ 1742 case 12: return 0xd; 1743 case 18: return 0xf; 1744 case 24: return 0x5; 1745 case 36: return 0x7; 1746 case 48: return 0x9; 1747 case 72: return 0xb; 1748 case 96: return 0x1; 1749 case 108: return 0x3; 1750 1751 /* unsupported rates (should not get there) */ 1752 default: return 0; 1753 } 1754 } 1755 1756 /* quickly determine if a given rate is CCK or OFDM */ 1757 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1758 1759 static int 1760 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1761 int ac) 1762 { 1763 struct ieee80211com *ic = &sc->sc_ic; 1764 struct wpi_tx_ring *ring = &sc->txq[ac]; 1765 struct wpi_tx_desc *desc; 1766 struct wpi_tx_data *data; 1767 struct wpi_tx_cmd *cmd; 1768 struct wpi_cmd_data *tx; 1769 struct ieee80211_frame *wh; 1770 struct ieee80211_key *k; 1771 const struct chanAccParams *cap; 1772 struct mbuf *mnew; 1773 int i, error, rate, hdrlen, noack = 0; 1774 1775 desc = &ring->desc[ring->cur]; 1776 data = &ring->data[ring->cur]; 1777 1778 wh = mtod(m0, struct ieee80211_frame *); 1779 1780 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1781 hdrlen = sizeof (struct ieee80211_qosframe); 1782 cap = &ic->ic_wme.wme_chanParams; 1783 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1784 } else 1785 hdrlen = sizeof (struct ieee80211_frame); 1786 1787 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1788 k = ieee80211_crypto_encap(ic, ni, m0); 1789 if (k == NULL) { 1790 m_freem(m0); 1791 return ENOBUFS; 1792 } 1793 1794 /* packet header may have moved, reset our local pointer */ 1795 wh = mtod(m0, struct ieee80211_frame *); 1796 } 1797 1798 /* pickup a rate */ 1799 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1800 IEEE80211_FC0_TYPE_MGT) { 1801 /* mgmt frames are sent at the lowest available bit-rate */ 1802 rate = ni->ni_rates.rs_rates[0]; 1803 } else { 1804 if (ic->ic_fixed_rate != -1) { 1805 rate = ic->ic_sup_rates[ic->ic_curmode]. 1806 rs_rates[ic->ic_fixed_rate]; 1807 } else 1808 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1809 } 1810 rate &= IEEE80211_RATE_VAL; 1811 1812 1813 #if NBPFILTER > 0 1814 if (sc->sc_drvbpf != NULL) { 1815 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1816 1817 tap->wt_flags = 0; 1818 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1819 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1820 tap->wt_rate = rate; 1821 tap->wt_hwqueue = ac; 1822 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1823 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1824 1825 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1826 } 1827 #endif 1828 1829 cmd = &ring->cmd[ring->cur]; 1830 cmd->code = WPI_CMD_TX_DATA; 1831 cmd->flags = 0; 1832 cmd->qid = ring->qid; 1833 cmd->idx = ring->cur; 1834 1835 tx = (struct wpi_cmd_data *)cmd->data; 1836 tx->flags = 0; 1837 1838 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1839 tx->flags |= htole32(WPI_TX_NEED_ACK); 1840 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1841 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1842 1843 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1844 1845 /* retrieve destination node's id */ 1846 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1847 WPI_ID_BSS; 1848 1849 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1850 IEEE80211_FC0_TYPE_MGT) { 1851 /* tell h/w to set timestamp in probe responses */ 1852 if ((wh->i_fc[0] & 1853 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1854 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1855 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1856 1857 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1858 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1859 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1860 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1861 tx->timeout = htole16(3); 1862 else 1863 tx->timeout = htole16(2); 1864 } else 1865 tx->timeout = htole16(0); 1866 1867 tx->rate = wpi_plcp_signal(rate); 1868 1869 /* be very persistant at sending frames out */ 1870 tx->rts_ntries = 7; 1871 tx->data_ntries = 15; 1872 1873 tx->ofdm_mask = 0xff; 1874 tx->cck_mask = 0xf; 1875 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1876 1877 tx->len = htole16(m0->m_pkthdr.len); 1878 1879 /* save and trim IEEE802.11 header */ 1880 m_copydata(m0, 0, hdrlen, (void *)&tx->wh); 1881 m_adj(m0, hdrlen); 1882 1883 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1884 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1885 if (error != 0 && error != EFBIG) { 1886 aprint_error("%s: could not map mbuf (error %d)\n", 1887 sc->sc_dev.dv_xname, error); 1888 m_freem(m0); 1889 return error; 1890 } 1891 if (error != 0) { 1892 /* too many fragments, linearize */ 1893 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1894 if (mnew == NULL) { 1895 m_freem(m0); 1896 return ENOMEM; 1897 } 1898 1899 M_COPY_PKTHDR(mnew, m0); 1900 if (m0->m_pkthdr.len > MHLEN) { 1901 MCLGET(mnew, M_DONTWAIT); 1902 if (!(mnew->m_flags & M_EXT)) { 1903 m_freem(m0); 1904 m_freem(mnew); 1905 return ENOMEM; 1906 } 1907 } 1908 1909 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1910 m_freem(m0); 1911 mnew->m_len = mnew->m_pkthdr.len; 1912 m0 = mnew; 1913 1914 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1915 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1916 if (error != 0) { 1917 aprint_error("%s: could not map mbuf (error %d)\n", 1918 sc->sc_dev.dv_xname, error); 1919 m_freem(m0); 1920 return error; 1921 } 1922 } 1923 1924 data->m = m0; 1925 data->ni = ni; 1926 1927 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1928 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1929 1930 /* first scatter/gather segment is used by the tx data command */ 1931 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1932 (1 + data->map->dm_nsegs) << 24); 1933 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1934 ring->cur * sizeof (struct wpi_tx_cmd)); 1935 /*XXX The next line might be wrong. I don't use hdrlen*/ 1936 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1937 1938 for (i = 1; i <= data->map->dm_nsegs; i++) { 1939 desc->segs[i].addr = 1940 htole32(data->map->dm_segs[i - 1].ds_addr); 1941 desc->segs[i].len = 1942 htole32(data->map->dm_segs[i - 1].ds_len); 1943 } 1944 1945 ring->queued++; 1946 1947 /* kick ring */ 1948 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1949 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1950 1951 return 0; 1952 } 1953 1954 static void 1955 wpi_start(struct ifnet *ifp) 1956 { 1957 struct wpi_softc *sc = ifp->if_softc; 1958 struct ieee80211com *ic = &sc->sc_ic; 1959 struct ieee80211_node *ni; 1960 struct ether_header *eh; 1961 struct mbuf *m0; 1962 int ac; 1963 1964 /* 1965 * net80211 may still try to send management frames even if the 1966 * IFF_RUNNING flag is not set... 1967 */ 1968 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1969 return; 1970 1971 for (;;) { 1972 IF_DEQUEUE(&ic->ic_mgtq, m0); 1973 if (m0 != NULL) { 1974 1975 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1976 m0->m_pkthdr.rcvif = NULL; 1977 1978 /* management frames go into ring 0 */ 1979 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1980 ifp->if_oerrors++; 1981 continue; 1982 } 1983 #if NBPFILTER > 0 1984 if (ic->ic_rawbpf != NULL) 1985 bpf_mtap(ic->ic_rawbpf, m0); 1986 #endif 1987 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1988 ifp->if_oerrors++; 1989 break; 1990 } 1991 } else { 1992 if (ic->ic_state != IEEE80211_S_RUN) 1993 break; 1994 IFQ_POLL(&ifp->if_snd, m0); 1995 if (m0 == NULL) 1996 break; 1997 1998 if (m0->m_len < sizeof (*eh) && 1999 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 2000 ifp->if_oerrors++; 2001 continue; 2002 } 2003 eh = mtod(m0, struct ether_header *); 2004 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2005 if (ni == NULL) { 2006 m_freem(m0); 2007 ifp->if_oerrors++; 2008 continue; 2009 } 2010 2011 /* classify mbuf so we can find which tx ring to use */ 2012 if (ieee80211_classify(ic, m0, ni) != 0) { 2013 m_freem(m0); 2014 ieee80211_free_node(ni); 2015 ifp->if_oerrors++; 2016 continue; 2017 } 2018 2019 /* no QoS encapsulation for EAPOL frames */ 2020 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2021 M_WME_GETAC(m0) : WME_AC_BE; 2022 2023 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2024 /* there is no place left in this ring */ 2025 ifp->if_flags |= IFF_OACTIVE; 2026 break; 2027 } 2028 IFQ_DEQUEUE(&ifp->if_snd, m0); 2029 #if NBPFILTER > 0 2030 if (ifp->if_bpf != NULL) 2031 bpf_mtap(ifp->if_bpf, m0); 2032 #endif 2033 m0 = ieee80211_encap(ic, m0, ni); 2034 if (m0 == NULL) { 2035 ieee80211_free_node(ni); 2036 ifp->if_oerrors++; 2037 continue; 2038 } 2039 #if NBPFILTER > 0 2040 if (ic->ic_rawbpf != NULL) 2041 bpf_mtap(ic->ic_rawbpf, m0); 2042 #endif 2043 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2044 ieee80211_free_node(ni); 2045 ifp->if_oerrors++; 2046 break; 2047 } 2048 } 2049 2050 sc->sc_tx_timer = 5; 2051 ifp->if_timer = 1; 2052 } 2053 } 2054 2055 static void 2056 wpi_watchdog(struct ifnet *ifp) 2057 { 2058 struct wpi_softc *sc = ifp->if_softc; 2059 2060 ifp->if_timer = 0; 2061 2062 if (sc->sc_tx_timer > 0) { 2063 if (--sc->sc_tx_timer == 0) { 2064 aprint_error("%s: device timeout\n", 2065 sc->sc_dev.dv_xname); 2066 ifp->if_oerrors++; 2067 ifp->if_flags &= ~IFF_UP; 2068 wpi_stop(ifp, 1); 2069 return; 2070 } 2071 ifp->if_timer = 1; 2072 } 2073 2074 ieee80211_watchdog(&sc->sc_ic); 2075 } 2076 2077 static int 2078 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2079 { 2080 #define IS_RUNNING(ifp) \ 2081 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2082 2083 struct wpi_softc *sc = ifp->if_softc; 2084 struct ieee80211com *ic = &sc->sc_ic; 2085 int s, error = 0; 2086 2087 s = splnet(); 2088 2089 switch (cmd) { 2090 case SIOCSIFFLAGS: 2091 if (ifp->if_flags & IFF_UP) { 2092 if (!(ifp->if_flags & IFF_RUNNING)) 2093 wpi_init(ifp); 2094 } else { 2095 if (ifp->if_flags & IFF_RUNNING) 2096 wpi_stop(ifp, 1); 2097 } 2098 break; 2099 2100 case SIOCADDMULTI: 2101 case SIOCDELMULTI: 2102 /* XXX no h/w multicast filter? --dyoung */ 2103 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2104 /* setup multicast filter, etc */ 2105 error = 0; 2106 } 2107 break; 2108 2109 default: 2110 error = ieee80211_ioctl(ic, cmd, data); 2111 } 2112 2113 if (error == ENETRESET) { 2114 if (IS_RUNNING(ifp) && 2115 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2116 wpi_init(ifp); 2117 error = 0; 2118 } 2119 2120 splx(s); 2121 return error; 2122 2123 #undef IS_RUNNING 2124 } 2125 2126 /* 2127 * Extract various information from EEPROM. 2128 */ 2129 static void 2130 wpi_read_eeprom(struct wpi_softc *sc) 2131 { 2132 struct ieee80211com *ic = &sc->sc_ic; 2133 char domain[4]; 2134 int i; 2135 2136 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2137 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2138 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2139 2140 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2141 sc->type)); 2142 2143 /* read and print regulatory domain */ 2144 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2145 aprint_normal(", %.4s", domain); 2146 2147 /* read and print MAC address */ 2148 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2149 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2150 2151 /* read the list of authorized channels */ 2152 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2153 wpi_read_eeprom_channels(sc, i); 2154 2155 /* read the list of power groups */ 2156 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2157 wpi_read_eeprom_group(sc, i); 2158 } 2159 2160 static void 2161 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2162 { 2163 struct ieee80211com *ic = &sc->sc_ic; 2164 const struct wpi_chan_band *band = &wpi_bands[n]; 2165 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2166 int chan, i; 2167 2168 wpi_read_prom_data(sc, band->addr, channels, 2169 band->nchan * sizeof (struct wpi_eeprom_chan)); 2170 2171 for (i = 0; i < band->nchan; i++) { 2172 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2173 continue; 2174 2175 chan = band->chan[i]; 2176 2177 if (n == 0) { /* 2GHz band */ 2178 ic->ic_channels[chan].ic_freq = 2179 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2180 ic->ic_channels[chan].ic_flags = 2181 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2182 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2183 2184 } else { /* 5GHz band */ 2185 /* 2186 * Some 3945abg adapters support channels 7, 8, 11 2187 * and 12 in the 2GHz *and* 5GHz bands. 2188 * Because of limitations in our net80211(9) stack, 2189 * we can't support these channels in 5GHz band. 2190 */ 2191 if (chan <= 14) 2192 continue; 2193 2194 ic->ic_channels[chan].ic_freq = 2195 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2196 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2197 } 2198 2199 /* is active scan allowed on this channel? */ 2200 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2201 ic->ic_channels[chan].ic_flags |= 2202 IEEE80211_CHAN_PASSIVE; 2203 } 2204 2205 /* save maximum allowed power for this channel */ 2206 sc->maxpwr[chan] = channels[i].maxpwr; 2207 2208 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2209 chan, channels[i].flags, sc->maxpwr[chan])); 2210 } 2211 } 2212 2213 static void 2214 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2215 { 2216 struct wpi_power_group *group = &sc->groups[n]; 2217 struct wpi_eeprom_group rgroup; 2218 int i; 2219 2220 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2221 sizeof rgroup); 2222 2223 /* save power group information */ 2224 group->chan = rgroup.chan; 2225 group->maxpwr = rgroup.maxpwr; 2226 /* temperature at which the samples were taken */ 2227 group->temp = (int16_t)le16toh(rgroup.temp); 2228 2229 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2230 group->chan, group->maxpwr, group->temp)); 2231 2232 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2233 group->samples[i].index = rgroup.samples[i].index; 2234 group->samples[i].power = rgroup.samples[i].power; 2235 2236 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2237 group->samples[i].index, group->samples[i].power)); 2238 } 2239 } 2240 2241 /* 2242 * Send a command to the firmware. 2243 */ 2244 static int 2245 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2246 { 2247 struct wpi_tx_ring *ring = &sc->cmdq; 2248 struct wpi_tx_desc *desc; 2249 struct wpi_tx_cmd *cmd; 2250 2251 KASSERT(size <= sizeof cmd->data); 2252 2253 desc = &ring->desc[ring->cur]; 2254 cmd = &ring->cmd[ring->cur]; 2255 2256 cmd->code = code; 2257 cmd->flags = 0; 2258 cmd->qid = ring->qid; 2259 cmd->idx = ring->cur; 2260 memcpy(cmd->data, buf, size); 2261 2262 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2263 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2264 ring->cur * sizeof (struct wpi_tx_cmd)); 2265 desc->segs[0].len = htole32(4 + size); 2266 2267 /* kick cmd ring */ 2268 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2269 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2270 2271 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2272 } 2273 2274 static int 2275 wpi_wme_update(struct ieee80211com *ic) 2276 { 2277 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2278 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2279 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2280 const struct wmeParams *wmep; 2281 struct wpi_wme_setup wme; 2282 int ac; 2283 2284 /* don't override default WME values if WME is not actually enabled */ 2285 if (!(ic->ic_flags & IEEE80211_F_WME)) 2286 return 0; 2287 2288 wme.flags = 0; 2289 for (ac = 0; ac < WME_NUM_AC; ac++) { 2290 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2291 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2292 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2293 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2294 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2295 2296 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2297 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2298 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2299 } 2300 2301 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2302 #undef WPI_USEC 2303 #undef WPI_EXP2 2304 } 2305 2306 /* 2307 * Configure h/w multi-rate retries. 2308 */ 2309 static int 2310 wpi_mrr_setup(struct wpi_softc *sc) 2311 { 2312 struct ieee80211com *ic = &sc->sc_ic; 2313 struct wpi_mrr_setup mrr; 2314 int i, error; 2315 2316 /* CCK rates (not used with 802.11a) */ 2317 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2318 mrr.rates[i].flags = 0; 2319 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2320 /* fallback to the immediate lower CCK rate (if any) */ 2321 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2322 /* try one time at this rate before falling back to "next" */ 2323 mrr.rates[i].ntries = 1; 2324 } 2325 2326 /* OFDM rates (not used with 802.11b) */ 2327 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2328 mrr.rates[i].flags = 0; 2329 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2330 /* fallback to the immediate lower rate (if any) */ 2331 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2332 mrr.rates[i].next = (i == WPI_OFDM6) ? 2333 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2334 WPI_OFDM6 : WPI_CCK2) : 2335 i - 1; 2336 /* try one time at this rate before falling back to "next" */ 2337 mrr.rates[i].ntries = 1; 2338 } 2339 2340 /* setup MRR for control frames */ 2341 mrr.which = htole32(WPI_MRR_CTL); 2342 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2343 if (error != 0) { 2344 aprint_error("%s: could not setup MRR for control frames\n", 2345 sc->sc_dev.dv_xname); 2346 return error; 2347 } 2348 2349 /* setup MRR for data frames */ 2350 mrr.which = htole32(WPI_MRR_DATA); 2351 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2352 if (error != 0) { 2353 aprint_error("%s: could not setup MRR for data frames\n", 2354 sc->sc_dev.dv_xname); 2355 return error; 2356 } 2357 2358 return 0; 2359 } 2360 2361 static void 2362 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2363 { 2364 struct wpi_cmd_led led; 2365 2366 led.which = which; 2367 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2368 led.off = off; 2369 led.on = on; 2370 2371 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2372 } 2373 2374 static void 2375 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2376 { 2377 struct wpi_cmd_tsf tsf; 2378 uint64_t val, mod; 2379 2380 memset(&tsf, 0, sizeof tsf); 2381 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2382 tsf.bintval = htole16(ni->ni_intval); 2383 tsf.lintval = htole16(10); 2384 2385 /* compute remaining time until next beacon */ 2386 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2387 mod = le64toh(tsf.tstamp) % val; 2388 tsf.binitval = htole32((uint32_t)(val - mod)); 2389 2390 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2391 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2392 2393 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2394 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2395 } 2396 2397 /* 2398 * Update Tx power to match what is defined for channel `c'. 2399 */ 2400 static int 2401 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2402 { 2403 struct ieee80211com *ic = &sc->sc_ic; 2404 struct wpi_power_group *group; 2405 struct wpi_cmd_txpower txpower; 2406 u_int chan; 2407 int i; 2408 2409 /* get channel number */ 2410 chan = ieee80211_chan2ieee(ic, c); 2411 2412 /* find the power group to which this channel belongs */ 2413 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2414 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2415 if (chan <= group->chan) 2416 break; 2417 } else 2418 group = &sc->groups[0]; 2419 2420 memset(&txpower, 0, sizeof txpower); 2421 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2422 txpower.chan = htole16(chan); 2423 2424 /* set Tx power for all OFDM and CCK rates */ 2425 for (i = 0; i <= 11 ; i++) { 2426 /* retrieve Tx power for this channel/rate combination */ 2427 int idx = wpi_get_power_index(sc, group, c, 2428 wpi_ridx_to_rate[i]); 2429 2430 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2431 2432 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2433 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2434 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2435 } else { 2436 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2437 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2438 } 2439 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2440 wpi_ridx_to_rate[i], idx)); 2441 } 2442 2443 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2444 } 2445 2446 /* 2447 * Determine Tx power index for a given channel/rate combination. 2448 * This takes into account the regulatory information from EEPROM and the 2449 * current temperature. 2450 */ 2451 static int 2452 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2453 struct ieee80211_channel *c, int rate) 2454 { 2455 /* fixed-point arithmetic division using a n-bit fractional part */ 2456 #define fdivround(a, b, n) \ 2457 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2458 2459 /* linear interpolation */ 2460 #define interpolate(x, x1, y1, x2, y2, n) \ 2461 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2462 2463 struct ieee80211com *ic = &sc->sc_ic; 2464 struct wpi_power_sample *sample; 2465 int pwr, idx; 2466 u_int chan; 2467 2468 /* get channel number */ 2469 chan = ieee80211_chan2ieee(ic, c); 2470 2471 /* default power is group's maximum power - 3dB */ 2472 pwr = group->maxpwr / 2; 2473 2474 /* decrease power for highest OFDM rates to reduce distortion */ 2475 switch (rate) { 2476 case 72: /* 36Mb/s */ 2477 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2478 break; 2479 case 96: /* 48Mb/s */ 2480 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2481 break; 2482 case 108: /* 54Mb/s */ 2483 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2484 break; 2485 } 2486 2487 /* never exceed channel's maximum allowed Tx power */ 2488 pwr = min(pwr, sc->maxpwr[chan]); 2489 2490 /* retrieve power index into gain tables from samples */ 2491 for (sample = group->samples; sample < &group->samples[3]; sample++) 2492 if (pwr > sample[1].power) 2493 break; 2494 /* fixed-point linear interpolation using a 19-bit fractional part */ 2495 idx = interpolate(pwr, sample[0].power, sample[0].index, 2496 sample[1].power, sample[1].index, 19); 2497 2498 /* 2499 * Adjust power index based on current temperature: 2500 * - if cooler than factory-calibrated: decrease output power 2501 * - if warmer than factory-calibrated: increase output power 2502 */ 2503 idx -= (sc->temp - group->temp) * 11 / 100; 2504 2505 /* decrease power for CCK rates (-5dB) */ 2506 if (!WPI_RATE_IS_OFDM(rate)) 2507 idx += 10; 2508 2509 /* keep power index in a valid range */ 2510 if (idx < 0) 2511 return 0; 2512 if (idx > WPI_MAX_PWR_INDEX) 2513 return WPI_MAX_PWR_INDEX; 2514 return idx; 2515 2516 #undef interpolate 2517 #undef fdivround 2518 } 2519 2520 /* 2521 * Build a beacon frame that the firmware will broadcast periodically in 2522 * IBSS or HostAP modes. 2523 */ 2524 static int 2525 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2526 { 2527 struct ieee80211com *ic = &sc->sc_ic; 2528 struct wpi_tx_ring *ring = &sc->cmdq; 2529 struct wpi_tx_desc *desc; 2530 struct wpi_tx_data *data; 2531 struct wpi_tx_cmd *cmd; 2532 struct wpi_cmd_beacon *bcn; 2533 struct ieee80211_beacon_offsets bo; 2534 struct mbuf *m0; 2535 int error; 2536 2537 desc = &ring->desc[ring->cur]; 2538 data = &ring->data[ring->cur]; 2539 2540 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2541 if (m0 == NULL) { 2542 aprint_error("%s: could not allocate beacon frame\n", 2543 sc->sc_dev.dv_xname); 2544 return ENOMEM; 2545 } 2546 2547 cmd = &ring->cmd[ring->cur]; 2548 cmd->code = WPI_CMD_SET_BEACON; 2549 cmd->flags = 0; 2550 cmd->qid = ring->qid; 2551 cmd->idx = ring->cur; 2552 2553 bcn = (struct wpi_cmd_beacon *)cmd->data; 2554 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2555 bcn->id = WPI_ID_BROADCAST; 2556 bcn->ofdm_mask = 0xff; 2557 bcn->cck_mask = 0x0f; 2558 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2559 bcn->len = htole16(m0->m_pkthdr.len); 2560 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2561 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2562 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2563 2564 /* save and trim IEEE802.11 header */ 2565 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2566 m_adj(m0, sizeof (struct ieee80211_frame)); 2567 2568 /* assume beacon frame is contiguous */ 2569 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2570 BUS_DMA_READ | BUS_DMA_NOWAIT); 2571 if (error) { 2572 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2573 m_freem(m0); 2574 return error; 2575 } 2576 2577 data->m = m0; 2578 2579 /* first scatter/gather segment is used by the beacon command */ 2580 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2581 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2582 ring->cur * sizeof (struct wpi_tx_cmd)); 2583 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2584 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2585 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2586 2587 /* kick cmd ring */ 2588 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2589 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2590 2591 return 0; 2592 } 2593 2594 static int 2595 wpi_auth(struct wpi_softc *sc) 2596 { 2597 struct ieee80211com *ic = &sc->sc_ic; 2598 struct ieee80211_node *ni = ic->ic_bss; 2599 struct wpi_node_info node; 2600 int error; 2601 2602 /* update adapter's configuration */ 2603 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2604 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2605 sc->config.flags = htole32(WPI_CONFIG_TSF); 2606 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2607 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2608 WPI_CONFIG_24GHZ); 2609 } 2610 switch (ic->ic_curmode) { 2611 case IEEE80211_MODE_11A: 2612 sc->config.cck_mask = 0; 2613 sc->config.ofdm_mask = 0x15; 2614 break; 2615 case IEEE80211_MODE_11B: 2616 sc->config.cck_mask = 0x03; 2617 sc->config.ofdm_mask = 0; 2618 break; 2619 default: /* assume 802.11b/g */ 2620 sc->config.cck_mask = 0x0f; 2621 sc->config.ofdm_mask = 0x15; 2622 } 2623 2624 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2625 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2626 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2627 sizeof (struct wpi_config), 1); 2628 if (error != 0) { 2629 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2630 return error; 2631 } 2632 2633 /* configuration has changed, set Tx power accordingly */ 2634 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2635 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2636 return error; 2637 } 2638 2639 /* add default node */ 2640 memset(&node, 0, sizeof node); 2641 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2642 node.id = WPI_ID_BSS; 2643 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2644 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2645 node.action = htole32(WPI_ACTION_SET_RATE); 2646 node.antenna = WPI_ANTENNA_BOTH; 2647 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2648 if (error != 0) { 2649 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2650 return error; 2651 } 2652 2653 return 0; 2654 } 2655 2656 /* 2657 * Send a scan request to the firmware. Since this command is huge, we map it 2658 * into a mbuf instead of using the pre-allocated set of commands. 2659 */ 2660 static int 2661 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2662 { 2663 struct ieee80211com *ic = &sc->sc_ic; 2664 struct wpi_tx_ring *ring = &sc->cmdq; 2665 struct wpi_tx_desc *desc; 2666 struct wpi_tx_data *data; 2667 struct wpi_tx_cmd *cmd; 2668 struct wpi_scan_hdr *hdr; 2669 struct wpi_scan_chan *chan; 2670 struct ieee80211_frame *wh; 2671 struct ieee80211_rateset *rs; 2672 struct ieee80211_channel *c; 2673 enum ieee80211_phymode mode; 2674 uint8_t *frm; 2675 int nrates, pktlen, error; 2676 2677 desc = &ring->desc[ring->cur]; 2678 data = &ring->data[ring->cur]; 2679 2680 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2681 if (data->m == NULL) { 2682 aprint_error("%s: could not allocate mbuf for scan command\n", 2683 sc->sc_dev.dv_xname); 2684 return ENOMEM; 2685 } 2686 2687 MCLGET(data->m, M_DONTWAIT); 2688 if (!(data->m->m_flags & M_EXT)) { 2689 m_freem(data->m); 2690 data->m = NULL; 2691 aprint_error("%s: could not allocate mbuf for scan command\n", 2692 sc->sc_dev.dv_xname); 2693 return ENOMEM; 2694 } 2695 2696 cmd = mtod(data->m, struct wpi_tx_cmd *); 2697 cmd->code = WPI_CMD_SCAN; 2698 cmd->flags = 0; 2699 cmd->qid = ring->qid; 2700 cmd->idx = ring->cur; 2701 2702 hdr = (struct wpi_scan_hdr *)cmd->data; 2703 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2704 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2705 hdr->id = WPI_ID_BROADCAST; 2706 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2707 2708 /* 2709 * Move to the next channel if no packets are received within 5 msecs 2710 * after sending the probe request (this helps to reduce the duration 2711 * of active scans). 2712 */ 2713 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2714 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2715 2716 if (flags & IEEE80211_CHAN_A) { 2717 hdr->crc_threshold = htole16(1); 2718 /* send probe requests at 6Mbps */ 2719 hdr->rate = wpi_plcp_signal(12); 2720 } else { 2721 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2722 /* send probe requests at 1Mbps */ 2723 hdr->rate = wpi_plcp_signal(2); 2724 } 2725 2726 /* for directed scans, firmware inserts the essid IE itself */ 2727 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2728 hdr->essid[0].len = ic->ic_des_esslen; 2729 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2730 2731 /* 2732 * Build a probe request frame. Most of the following code is a 2733 * copy & paste of what is done in net80211. 2734 */ 2735 wh = (struct ieee80211_frame *)(hdr + 1); 2736 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2737 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2738 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2739 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2740 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2741 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2742 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2743 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2744 2745 frm = (uint8_t *)(wh + 1); 2746 2747 /* add empty essid IE (firmware generates it for directed scans) */ 2748 *frm++ = IEEE80211_ELEMID_SSID; 2749 *frm++ = 0; 2750 2751 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2752 rs = &ic->ic_sup_rates[mode]; 2753 2754 /* add supported rates IE */ 2755 *frm++ = IEEE80211_ELEMID_RATES; 2756 nrates = rs->rs_nrates; 2757 if (nrates > IEEE80211_RATE_SIZE) 2758 nrates = IEEE80211_RATE_SIZE; 2759 *frm++ = nrates; 2760 memcpy(frm, rs->rs_rates, nrates); 2761 frm += nrates; 2762 2763 /* add supported xrates IE */ 2764 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2765 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2766 *frm++ = IEEE80211_ELEMID_XRATES; 2767 *frm++ = nrates; 2768 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2769 frm += nrates; 2770 } 2771 2772 /* setup length of probe request */ 2773 hdr->paylen = htole16(frm - (uint8_t *)wh); 2774 2775 chan = (struct wpi_scan_chan *)frm; 2776 for (c = &ic->ic_channels[1]; 2777 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2778 if ((c->ic_flags & flags) != flags) 2779 continue; 2780 2781 chan->chan = ieee80211_chan2ieee(ic, c); 2782 chan->flags = 0; 2783 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2784 chan->flags |= WPI_CHAN_ACTIVE; 2785 if (ic->ic_des_esslen != 0) 2786 chan->flags |= WPI_CHAN_DIRECT; 2787 } 2788 chan->dsp_gain = 0x6e; 2789 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2790 chan->rf_gain = 0x3b; 2791 chan->active = htole16(10); 2792 chan->passive = htole16(110); 2793 } else { 2794 chan->rf_gain = 0x28; 2795 chan->active = htole16(20); 2796 chan->passive = htole16(120); 2797 } 2798 hdr->nchan++; 2799 chan++; 2800 2801 frm += sizeof (struct wpi_scan_chan); 2802 } 2803 hdr->len = htole16(frm - (uint8_t *)hdr); 2804 pktlen = frm - (uint8_t *)cmd; 2805 2806 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2807 NULL, BUS_DMA_NOWAIT); 2808 if (error) { 2809 aprint_error("%s: could not map scan command\n", 2810 sc->sc_dev.dv_xname); 2811 m_freem(data->m); 2812 data->m = NULL; 2813 return error; 2814 } 2815 2816 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2817 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2818 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2819 2820 /* kick cmd ring */ 2821 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2822 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2823 2824 return 0; /* will be notified async. of failure/success */ 2825 } 2826 2827 static int 2828 wpi_config(struct wpi_softc *sc) 2829 { 2830 struct ieee80211com *ic = &sc->sc_ic; 2831 struct ifnet *ifp = ic->ic_ifp; 2832 struct wpi_power power; 2833 struct wpi_bluetooth bluetooth; 2834 struct wpi_node_info node; 2835 int error; 2836 2837 memset(&power, 0, sizeof power); 2838 power.flags = htole32(WPI_POWER_CAM | 0x8); 2839 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2840 if (error != 0) { 2841 aprint_error("%s: could not set power mode\n", 2842 sc->sc_dev.dv_xname); 2843 return error; 2844 } 2845 2846 /* configure bluetooth coexistence */ 2847 memset(&bluetooth, 0, sizeof bluetooth); 2848 bluetooth.flags = 3; 2849 bluetooth.lead = 0xaa; 2850 bluetooth.kill = 1; 2851 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2852 0); 2853 if (error != 0) { 2854 aprint_error( 2855 "%s: could not configure bluetooth coexistence\n", 2856 sc->sc_dev.dv_xname); 2857 return error; 2858 } 2859 2860 /* configure adapter */ 2861 memset(&sc->config, 0, sizeof (struct wpi_config)); 2862 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2863 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2864 /*set default channel*/ 2865 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2866 sc->config.flags = htole32(WPI_CONFIG_TSF); 2867 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2868 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2869 WPI_CONFIG_24GHZ); 2870 } 2871 sc->config.filter = 0; 2872 switch (ic->ic_opmode) { 2873 case IEEE80211_M_STA: 2874 sc->config.mode = WPI_MODE_STA; 2875 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2876 break; 2877 case IEEE80211_M_IBSS: 2878 case IEEE80211_M_AHDEMO: 2879 sc->config.mode = WPI_MODE_IBSS; 2880 break; 2881 case IEEE80211_M_HOSTAP: 2882 sc->config.mode = WPI_MODE_HOSTAP; 2883 break; 2884 case IEEE80211_M_MONITOR: 2885 sc->config.mode = WPI_MODE_MONITOR; 2886 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2887 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2888 break; 2889 } 2890 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2891 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2892 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2893 sizeof (struct wpi_config), 0); 2894 if (error != 0) { 2895 aprint_error("%s: configure command failed\n", 2896 sc->sc_dev.dv_xname); 2897 return error; 2898 } 2899 2900 /* configuration has changed, set Tx power accordingly */ 2901 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2902 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2903 return error; 2904 } 2905 2906 /* add broadcast node */ 2907 memset(&node, 0, sizeof node); 2908 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2909 node.id = WPI_ID_BROADCAST; 2910 node.rate = wpi_plcp_signal(2); 2911 node.action = htole32(WPI_ACTION_SET_RATE); 2912 node.antenna = WPI_ANTENNA_BOTH; 2913 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2914 if (error != 0) { 2915 aprint_error("%s: could not add broadcast node\n", 2916 sc->sc_dev.dv_xname); 2917 return error; 2918 } 2919 2920 if ((error = wpi_mrr_setup(sc)) != 0) { 2921 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2922 return error; 2923 } 2924 2925 return 0; 2926 } 2927 2928 static void 2929 wpi_stop_master(struct wpi_softc *sc) 2930 { 2931 uint32_t tmp; 2932 int ntries; 2933 2934 tmp = WPI_READ(sc, WPI_RESET); 2935 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2936 2937 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2938 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2939 return; /* already asleep */ 2940 2941 for (ntries = 0; ntries < 100; ntries++) { 2942 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2943 break; 2944 DELAY(10); 2945 } 2946 if (ntries == 100) { 2947 aprint_error("%s: timeout waiting for master\n", 2948 sc->sc_dev.dv_xname); 2949 } 2950 } 2951 2952 static int 2953 wpi_power_up(struct wpi_softc *sc) 2954 { 2955 uint32_t tmp; 2956 int ntries; 2957 2958 wpi_mem_lock(sc); 2959 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2960 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2961 wpi_mem_unlock(sc); 2962 2963 for (ntries = 0; ntries < 5000; ntries++) { 2964 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2965 break; 2966 DELAY(10); 2967 } 2968 if (ntries == 5000) { 2969 aprint_error("%s: timeout waiting for NIC to power up\n", 2970 sc->sc_dev.dv_xname); 2971 return ETIMEDOUT; 2972 } 2973 return 0; 2974 } 2975 2976 static int 2977 wpi_reset(struct wpi_softc *sc) 2978 { 2979 uint32_t tmp; 2980 int ntries; 2981 2982 /* clear any pending interrupts */ 2983 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2984 2985 tmp = WPI_READ(sc, WPI_PLL_CTL); 2986 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2987 2988 tmp = WPI_READ(sc, WPI_CHICKEN); 2989 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2990 2991 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2992 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2993 2994 /* wait for clock stabilization */ 2995 for (ntries = 0; ntries < 1000; ntries++) { 2996 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2997 break; 2998 DELAY(10); 2999 } 3000 if (ntries == 1000) { 3001 aprint_error("%s: timeout waiting for clock stabilization\n", 3002 sc->sc_dev.dv_xname); 3003 return ETIMEDOUT; 3004 } 3005 3006 /* initialize EEPROM */ 3007 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3008 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3009 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 3010 return EIO; 3011 } 3012 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3013 3014 return 0; 3015 } 3016 3017 static void 3018 wpi_hw_config(struct wpi_softc *sc) 3019 { 3020 uint32_t rev, hw; 3021 3022 /* voodoo from the reference driver */ 3023 hw = WPI_READ(sc, WPI_HWCONFIG); 3024 3025 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3026 rev = PCI_REVISION(rev); 3027 if ((rev & 0xc0) == 0x40) 3028 hw |= WPI_HW_ALM_MB; 3029 else if (!(rev & 0x80)) 3030 hw |= WPI_HW_ALM_MM; 3031 3032 if (sc->cap == 0x80) 3033 hw |= WPI_HW_SKU_MRC; 3034 3035 hw &= ~WPI_HW_REV_D; 3036 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3037 hw |= WPI_HW_REV_D; 3038 3039 if (sc->type > 1) 3040 hw |= WPI_HW_TYPE_B; 3041 3042 DPRINTF(("setting h/w config %x\n", hw)); 3043 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3044 } 3045 3046 static int 3047 wpi_init(struct ifnet *ifp) 3048 { 3049 struct wpi_softc *sc = ifp->if_softc; 3050 struct ieee80211com *ic = &sc->sc_ic; 3051 uint32_t tmp; 3052 int qid, ntries, error; 3053 3054 wpi_stop(ifp,1); 3055 (void)wpi_reset(sc); 3056 3057 wpi_mem_lock(sc); 3058 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3059 DELAY(20); 3060 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3061 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3062 wpi_mem_unlock(sc); 3063 3064 (void)wpi_power_up(sc); 3065 wpi_hw_config(sc); 3066 3067 /* init Rx ring */ 3068 wpi_mem_lock(sc); 3069 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3070 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3071 offsetof(struct wpi_shared, next)); 3072 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3073 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3074 wpi_mem_unlock(sc); 3075 3076 /* init Tx rings */ 3077 wpi_mem_lock(sc); 3078 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3079 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3080 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3081 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3082 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3083 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3084 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3085 3086 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3087 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3088 3089 for (qid = 0; qid < 6; qid++) { 3090 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3091 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3092 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3093 } 3094 wpi_mem_unlock(sc); 3095 3096 /* clear "radio off" and "disable command" bits (reversed logic) */ 3097 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3098 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3099 3100 /* clear any pending interrupts */ 3101 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3102 /* enable interrupts */ 3103 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3104 3105 /* not sure why/if this is necessary... */ 3106 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3107 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3108 3109 if ((error = wpi_load_firmware(sc)) != 0) { 3110 aprint_error("%s: could not load firmware\n", sc->sc_dev.dv_xname); 3111 goto fail1; 3112 } 3113 3114 /* wait for thermal sensors to calibrate */ 3115 for (ntries = 0; ntries < 1000; ntries++) { 3116 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3117 break; 3118 DELAY(10); 3119 } 3120 if (ntries == 1000) { 3121 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 3122 sc->sc_dev.dv_xname); 3123 error = ETIMEDOUT; 3124 goto fail1; 3125 } 3126 3127 DPRINTF(("temperature %d\n", sc->temp)); 3128 3129 if ((error = wpi_config(sc)) != 0) { 3130 aprint_error("%s: could not configure device\n", 3131 sc->sc_dev.dv_xname); 3132 goto fail1; 3133 } 3134 3135 ifp->if_flags &= ~IFF_OACTIVE; 3136 ifp->if_flags |= IFF_RUNNING; 3137 3138 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3139 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3140 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3141 } 3142 else 3143 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3144 3145 return 0; 3146 3147 fail1: wpi_stop(ifp, 1); 3148 return error; 3149 } 3150 3151 3152 static void 3153 wpi_stop(struct ifnet *ifp, int disable) 3154 { 3155 struct wpi_softc *sc = ifp->if_softc; 3156 struct ieee80211com *ic = &sc->sc_ic; 3157 uint32_t tmp; 3158 int ac; 3159 3160 ifp->if_timer = sc->sc_tx_timer = 0; 3161 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3162 3163 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3164 3165 /* disable interrupts */ 3166 WPI_WRITE(sc, WPI_MASK, 0); 3167 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3168 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3169 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3170 3171 wpi_mem_lock(sc); 3172 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3173 wpi_mem_unlock(sc); 3174 3175 /* reset all Tx rings */ 3176 for (ac = 0; ac < 4; ac++) 3177 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3178 wpi_reset_tx_ring(sc, &sc->cmdq); 3179 3180 /* reset Rx ring */ 3181 wpi_reset_rx_ring(sc, &sc->rxq); 3182 3183 wpi_mem_lock(sc); 3184 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3185 wpi_mem_unlock(sc); 3186 3187 DELAY(5); 3188 3189 wpi_stop_master(sc); 3190 3191 tmp = WPI_READ(sc, WPI_RESET); 3192 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3193 } 3194
Indexes created Mon Sep 29 03:10:08 GMT 2025