if_wpi.c revision 1.17.4.3
1 /* $NetBSD: if_wpi.c,v 1.17.4.3 2007/08/16 11:03:11 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007 5 * Damien Bergamini <damien.bergamini (at) free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __KERNEL_RCSID(0, "$NetBSD: if_wpi.c,v 1.17.4.3 2007/08/16 11:03:11 jmcneill Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 #include "bpfilter.h" 28 29 #include <sys/param.h> 30 #include <sys/sockio.h> 31 #include <sys/sysctl.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/conf.h> 38 #include <sys/kauth.h> 39 #include <sys/callout.h> 40 41 #include <machine/bus.h> 42 #include <machine/endian.h> 43 #include <machine/intr.h> 44 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcidevs.h> 48 49 #if NBPFILTER > 0 50 #include <net/bpf.h> 51 #endif 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 68 #include <dev/firmload.h> 69 70 #include <dev/pci/if_wpireg.h> 71 #include <dev/pci/if_wpivar.h> 72 73 #ifdef WPI_DEBUG 74 #define DPRINTF(x) if (wpi_debug > 0) printf x 75 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 76 int wpi_debug = 1; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n, x) 80 #endif 81 82 /* 83 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 84 */ 85 static const struct ieee80211_rateset wpi_rateset_11a = 86 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 87 88 static const struct ieee80211_rateset wpi_rateset_11b = 89 { 4, { 2, 4, 11, 22 } }; 90 91 static const struct ieee80211_rateset wpi_rateset_11g = 92 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 93 94 static int wpi_match(struct device *, struct cfdata *, void *); 95 static void wpi_attach(struct device *, struct device *, void *); 96 static int wpi_detach(struct device*, int); 97 static pnp_status_t wpi_power(device_t, pnp_request_t, void *); 98 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 99 void **, bus_size_t, bus_size_t, int); 100 static void wpi_dma_contig_free(struct wpi_dma_info *); 101 static int wpi_alloc_shared(struct wpi_softc *); 102 static void wpi_free_shared(struct wpi_softc *); 103 static int wpi_alloc_fwmem(struct wpi_softc *); 104 static void wpi_free_fwmem(struct wpi_softc *); 105 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 106 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 107 static int wpi_alloc_rpool(struct wpi_softc *); 108 static void wpi_free_rpool(struct wpi_softc *); 109 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 110 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 111 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 112 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 113 int); 114 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 115 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 116 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 117 static void wpi_newassoc(struct ieee80211_node *, int); 118 static int wpi_media_change(struct ifnet *); 119 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 120 static void wpi_mem_lock(struct wpi_softc *); 121 static void wpi_mem_unlock(struct wpi_softc *); 122 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 123 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 124 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 125 const uint32_t *, int); 126 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 127 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 128 static int wpi_load_firmware(struct wpi_softc *); 129 static void wpi_calib_timeout(void *); 130 static void wpi_iter_func(void *, struct ieee80211_node *); 131 static void wpi_power_calibration(struct wpi_softc *, int); 132 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 133 struct wpi_rx_data *); 134 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 135 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 136 static void wpi_notif_intr(struct wpi_softc *); 137 static int wpi_intr(void *); 138 static void wpi_read_eeprom(struct wpi_softc *); 139 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 140 static void wpi_read_eeprom_group(struct wpi_softc *, int); 141 static uint8_t wpi_plcp_signal(int); 142 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 143 struct ieee80211_node *, int); 144 static void wpi_start(struct ifnet *); 145 static void wpi_watchdog(struct ifnet *); 146 static int wpi_ioctl(struct ifnet *, u_long, void *); 147 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 148 static int wpi_wme_update(struct ieee80211com *); 149 static int wpi_mrr_setup(struct wpi_softc *); 150 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 151 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 152 static int wpi_set_txpower(struct wpi_softc *, 153 struct ieee80211_channel *, int); 154 static int wpi_get_power_index(struct wpi_softc *, 155 struct wpi_power_group *, struct ieee80211_channel *, int); 156 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 157 static int wpi_auth(struct wpi_softc *); 158 static int wpi_scan(struct wpi_softc *, uint16_t); 159 static int wpi_config(struct wpi_softc *); 160 static void wpi_stop_master(struct wpi_softc *); 161 static int wpi_power_up(struct wpi_softc *); 162 static int wpi_reset(struct wpi_softc *); 163 static void wpi_hw_config(struct wpi_softc *); 164 static int wpi_init(struct ifnet *); 165 static void wpi_stop(struct ifnet *, int); 166 167 CFATTACH_DECL(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 168 wpi_detach, NULL); 169 170 static int 171 wpi_match(struct device *parent, struct cfdata *match __unused, void *aux) 172 { 173 struct pci_attach_args *pa = aux; 174 175 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 176 return 0; 177 178 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 179 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 180 return 1; 181 182 return 0; 183 } 184 185 /* Base Address Register */ 186 #define WPI_PCI_BAR0 0x10 187 188 static void 189 wpi_attach(struct device *parent __unused, struct device *self, void *aux) 190 { 191 struct wpi_softc *sc = (struct wpi_softc *)self; 192 struct ieee80211com *ic = &sc->sc_ic; 193 struct ifnet *ifp = &sc->sc_ec.ec_if; 194 struct pci_attach_args *pa = aux; 195 const char *intrstr; 196 char devinfo[256]; 197 bus_space_tag_t memt; 198 bus_space_handle_t memh; 199 pci_intr_handle_t ih; 200 pcireg_t data; 201 int error, ac, revision; 202 203 sc->sc_pct = pa->pa_pc; 204 sc->sc_pcitag = pa->pa_tag; 205 206 callout_init(&sc->calib_to, 0); 207 208 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 209 revision = PCI_REVISION(pa->pa_class); 210 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 211 212 /* clear device specific PCI configuration register 0x41 */ 213 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 214 data &= ~0x0000ff00; 215 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 216 217 /* enable bus-mastering */ 218 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 219 data |= PCI_COMMAND_MASTER_ENABLE; 220 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 221 222 /* map the register window */ 223 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 224 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 225 if (error != 0) { 226 aprint_error("%s: could not map memory space\n", 227 sc->sc_dev.dv_xname); 228 return; 229 } 230 231 sc->sc_st = memt; 232 sc->sc_sh = memh; 233 sc->sc_dmat = pa->pa_dmat; 234 235 if (pci_intr_map(pa, &ih) != 0) { 236 aprint_error("%s: could not map interrupt\n", 237 sc->sc_dev.dv_xname); 238 return; 239 } 240 241 intrstr = pci_intr_string(sc->sc_pct, ih); 242 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 243 if (sc->sc_ih == NULL) { 244 aprint_error("%s: could not establish interrupt", 245 sc->sc_dev.dv_xname); 246 if (intrstr != NULL) 247 aprint_error(" at %s", intrstr); 248 aprint_error("\n"); 249 return; 250 } 251 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 252 253 if (wpi_reset(sc) != 0) { 254 aprint_error("%s: could not reset adapter\n", 255 sc->sc_dev.dv_xname); 256 return; 257 } 258 259 /* 260 * Allocate DMA memory for firmware transfers. 261 */ 262 if ((error = wpi_alloc_fwmem(sc)) != 0) { 263 aprint_error(": could not allocate firmware memory\n"); 264 return; 265 } 266 267 /* 268 * Allocate shared page and Tx/Rx rings. 269 */ 270 if ((error = wpi_alloc_shared(sc)) != 0) { 271 aprint_error("%s: could not allocate shared area\n", 272 sc->sc_dev.dv_xname); 273 goto fail1; 274 } 275 276 if ((error = wpi_alloc_rpool(sc)) != 0) { 277 aprint_error("%s: could not allocate Rx buffers\n", 278 sc->sc_dev.dv_xname); 279 goto fail2; 280 } 281 282 for (ac = 0; ac < 4; ac++) { 283 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 284 if (error != 0) { 285 aprint_error("%s: could not allocate Tx ring %d\n", 286 sc->sc_dev.dv_xname, ac); 287 goto fail3; 288 } 289 } 290 291 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 292 if (error != 0) { 293 aprint_error("%s: could not allocate command ring\n", 294 sc->sc_dev.dv_xname); 295 goto fail3; 296 } 297 298 error = wpi_alloc_tx_ring(sc, &sc->svcq, WPI_SVC_RING_COUNT, 5); 299 if (error != 0) { 300 aprint_error("%s: could not allocate service ring\n", 301 sc->sc_dev.dv_xname); 302 goto fail4; 303 } 304 305 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 306 aprint_error("%s: could not allocate Rx ring\n", 307 sc->sc_dev.dv_xname); 308 goto fail5; 309 } 310 311 ic->ic_ifp = ifp; 312 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 313 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 314 ic->ic_state = IEEE80211_S_INIT; 315 316 /* set device capabilities */ 317 ic->ic_caps = 318 IEEE80211_C_IBSS | /* IBSS mode support */ 319 IEEE80211_C_WPA | /* 802.11i */ 320 IEEE80211_C_MONITOR | /* monitor mode supported */ 321 IEEE80211_C_TXPMGT | /* tx power management */ 322 IEEE80211_C_SHSLOT | /* short slot time supported */ 323 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 324 IEEE80211_C_WME; /* 802.11e */ 325 326 /* read supported channels and MAC address from EEPROM */ 327 wpi_read_eeprom(sc); 328 329 /* set supported .11a, .11b, .11g rates */ 330 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 331 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 332 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 333 334 ic->ic_ibss_chan = &ic->ic_channels[0]; 335 336 ifp->if_softc = sc; 337 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 338 ifp->if_init = wpi_init; 339 ifp->if_stop = wpi_stop; 340 ifp->if_ioctl = wpi_ioctl; 341 ifp->if_start = wpi_start; 342 ifp->if_watchdog = wpi_watchdog; 343 IFQ_SET_READY(&ifp->if_snd); 344 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 345 346 if_attach(ifp); 347 ieee80211_ifattach(ic); 348 /* override default methods */ 349 ic->ic_node_alloc = wpi_node_alloc; 350 ic->ic_newassoc = wpi_newassoc; 351 ic->ic_wme.wme_update = wpi_wme_update; 352 353 /* override state transition machine */ 354 sc->sc_newstate = ic->ic_newstate; 355 ic->ic_newstate = wpi_newstate; 356 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 357 358 sc->amrr.amrr_min_success_threshold = 1; 359 sc->amrr.amrr_max_success_threshold = 15; 360 361 /* set power handler */ 362 if (pnp_register(self, wpi_power) != PNP_STATUS_SUCCESS) 363 aprint_error("%s: couldn't establish power handler\n", 364 device_xname(self)); 365 366 #if NBPFILTER > 0 367 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 368 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 369 &sc->sc_drvbpf); 370 371 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 372 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 373 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 374 375 sc->sc_txtap_len = sizeof sc->sc_txtapu; 376 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 377 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 378 #endif 379 380 ieee80211_announce(ic); 381 382 return; 383 384 fail5: wpi_free_tx_ring(sc, &sc->svcq); 385 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 386 fail3: while (--ac >= 0) 387 wpi_free_tx_ring(sc, &sc->txq[ac]); 388 wpi_free_rpool(sc); 389 fail2: wpi_free_shared(sc); 390 fail1: wpi_free_fwmem(sc); 391 } 392 393 static int 394 wpi_detach(struct device* self, int flags __unused) 395 { 396 struct wpi_softc *sc = (struct wpi_softc *)self; 397 struct ifnet *ifp = sc->sc_ic.ic_ifp; 398 int ac; 399 400 wpi_stop(ifp, 1); 401 402 #if NBPFILTER > 0 403 if (ifp != NULL) 404 bpfdetach(ifp); 405 #endif 406 ieee80211_ifdetach(&sc->sc_ic); 407 if (ifp != NULL) 408 if_detach(ifp); 409 410 for (ac = 0; ac < 4; ac++) 411 wpi_free_tx_ring(sc, &sc->txq[ac]); 412 wpi_free_tx_ring(sc, &sc->cmdq); 413 wpi_free_tx_ring(sc, &sc->svcq); 414 wpi_free_rx_ring(sc, &sc->rxq); 415 wpi_free_rpool(sc); 416 wpi_free_shared(sc); 417 418 if (sc->sc_ih != NULL) { 419 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 420 sc->sc_ih = NULL; 421 } 422 423 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 424 425 return 0; 426 } 427 428 static pnp_status_t 429 wpi_power(device_t dv, pnp_request_t req, void *opaque) 430 { 431 struct wpi_softc *sc = (struct wpi_softc *)dv; 432 pnp_capabilities_t *pcaps; 433 pnp_state_t *pstate; 434 struct ifnet *ifp; 435 pcireg_t data; 436 int s; 437 438 switch (req) { 439 case PNP_REQUEST_GET_CAPABILITIES: 440 pcaps = opaque; 441 pcaps->state = PNP_STATE_D0 | PNP_STATE_D3; 442 break; 443 case PNP_REQUEST_GET_STATE: 444 pstate = opaque; 445 *pstate = PNP_STATE_D0; 446 break; 447 case PNP_REQUEST_SET_STATE: 448 pstate = opaque; 449 switch (*pstate) { 450 case PNP_STATE_D0: 451 /* clear device specific PCI conf reg 0x41 */ 452 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 453 data &= ~0x0000ff00; 454 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 455 456 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0xe8, 457 sc->sc_pmstate_e8); 458 459 s = splnet(); 460 ifp = sc->sc_ic.ic_ifp; 461 if (ifp->if_flags & IFF_UP) { 462 ifp->if_init(ifp); 463 if (ifp->if_flags & IFF_RUNNING) 464 ifp->if_start(ifp); 465 } 466 splx(s); 467 break; 468 case PNP_STATE_D3: 469 sc->sc_pmstate_e8 = pci_conf_read( 470 sc->sc_pct, sc->sc_pcitag, 0xe8); 471 break; 472 default: 473 return PNP_STATUS_UNSUPPORTED; 474 } 475 break; 476 default: 477 return PNP_STATUS_UNSUPPORTED; 478 } 479 480 return PNP_STATUS_SUCCESS; 481 } 482 483 static int 484 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 485 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 486 { 487 int nsegs, error; 488 489 dma->tag = tag; 490 dma->size = size; 491 492 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 493 if (error != 0) 494 goto fail; 495 496 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 497 flags); 498 if (error != 0) 499 goto fail; 500 501 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 502 if (error != 0) 503 goto fail; 504 505 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 506 if (error != 0) 507 goto fail; 508 509 memset(dma->vaddr, 0, size); 510 511 dma->paddr = dma->map->dm_segs[0].ds_addr; 512 if (kvap != NULL) 513 *kvap = dma->vaddr; 514 515 return 0; 516 517 fail: wpi_dma_contig_free(dma); 518 return error; 519 } 520 521 static void 522 wpi_dma_contig_free(struct wpi_dma_info *dma) 523 { 524 if (dma->map != NULL) { 525 if (dma->vaddr != NULL) { 526 bus_dmamap_unload(dma->tag, dma->map); 527 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 528 bus_dmamem_free(dma->tag, &dma->seg, 1); 529 dma->vaddr = NULL; 530 } 531 bus_dmamap_destroy(dma->tag, dma->map); 532 dma->map = NULL; 533 } 534 } 535 536 /* 537 * Allocate a shared page between host and NIC. 538 */ 539 static int 540 wpi_alloc_shared(struct wpi_softc *sc) 541 { 542 int error; 543 /* must be aligned on a 4K-page boundary */ 544 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 545 (void **)&sc->shared, sizeof (struct wpi_shared), 546 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 547 if (error != 0) 548 aprint_error( 549 "%s: could not allocate shared area DMA memory\n", 550 sc->sc_dev.dv_xname); 551 552 return error; 553 } 554 555 static void 556 wpi_free_shared(struct wpi_softc *sc) 557 { 558 wpi_dma_contig_free(&sc->shared_dma); 559 } 560 561 /* 562 * Allocate DMA-safe memory for firmware transfer. 563 */ 564 static int 565 wpi_alloc_fwmem(struct wpi_softc *sc) 566 { 567 int error; 568 /* allocate enough contiguous space to store text and data */ 569 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 570 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 571 BUS_DMA_NOWAIT); 572 573 if (error != 0) 574 aprint_error( 575 "%s: could not allocate firmware transfer area" 576 "DMA memory\n", sc->sc_dev.dv_xname); 577 return error; 578 } 579 580 static void 581 wpi_free_fwmem(struct wpi_softc *sc) 582 { 583 wpi_dma_contig_free(&sc->fw_dma); 584 } 585 586 587 static struct wpi_rbuf * 588 wpi_alloc_rbuf(struct wpi_softc *sc) 589 { 590 struct wpi_rbuf *rbuf; 591 592 rbuf = SLIST_FIRST(&sc->rxq.freelist); 593 if (rbuf == NULL) 594 return NULL; 595 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 596 sc->rxq.nb_free_entries --; 597 598 return rbuf; 599 } 600 601 /* 602 * This is called automatically by the network stack when the mbuf to which our 603 * Rx buffer is attached is freed. 604 */ 605 static void 606 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 607 { 608 struct wpi_rbuf *rbuf = arg; 609 struct wpi_softc *sc = rbuf->sc; 610 int s; 611 612 /* put the buffer back in the free list */ 613 614 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 615 sc->rxq.nb_free_entries ++; 616 617 if (__predict_true(m != NULL)) { 618 s = splvm(); 619 pool_cache_put(&mbpool_cache, m); 620 splx(s); 621 } 622 } 623 624 static int 625 wpi_alloc_rpool(struct wpi_softc *sc) 626 { 627 struct wpi_rx_ring *ring = &sc->rxq; 628 struct wpi_rbuf *rbuf; 629 int i, error; 630 631 /* allocate a big chunk of DMA'able memory.. */ 632 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 633 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 634 if (error != 0) { 635 aprint_normal("%s: could not allocate Rx buffers DMA memory\n", 636 sc->sc_dev.dv_xname); 637 return error; 638 } 639 640 /* ..and split it into 3KB chunks */ 641 SLIST_INIT(&ring->freelist); 642 for (i = 0; i < WPI_RBUF_COUNT; i++) { 643 rbuf = &ring->rbuf[i]; 644 rbuf->sc = sc; /* backpointer for callbacks */ 645 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 646 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 647 648 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 649 } 650 651 ring->nb_free_entries = WPI_RBUF_COUNT; 652 return 0; 653 } 654 655 static void 656 wpi_free_rpool(struct wpi_softc *sc) 657 { 658 wpi_dma_contig_free(&sc->rxq.buf_dma); 659 } 660 661 static int 662 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 663 { 664 struct wpi_rx_data *data; 665 struct wpi_rbuf *rbuf; 666 int i, error; 667 668 ring->cur = 0; 669 670 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 671 (void **)&ring->desc, 672 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 673 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 674 if (error != 0) { 675 aprint_error("%s: could not allocate rx ring DMA memory\n", 676 sc->sc_dev.dv_xname); 677 goto fail; 678 } 679 680 /* 681 * Setup Rx buffers. 682 */ 683 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 684 data = &ring->data[i]; 685 686 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 687 if (data->m == NULL) { 688 aprint_error("%s: could not allocate rx mbuf\n", 689 sc->sc_dev.dv_xname); 690 error = ENOMEM; 691 goto fail; 692 } 693 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 694 m_freem(data->m); 695 data->m = NULL; 696 aprint_error("%s: could not allocate rx cluster\n", 697 sc->sc_dev.dv_xname); 698 error = ENOMEM; 699 goto fail; 700 } 701 /* attach Rx buffer to mbuf */ 702 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 703 rbuf); 704 data->m->m_flags |= M_EXT_RW; 705 706 ring->desc[i] = htole32(rbuf->paddr); 707 } 708 709 return 0; 710 711 fail: wpi_free_rx_ring(sc, ring); 712 return error; 713 } 714 715 static void 716 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 717 { 718 int ntries; 719 720 wpi_mem_lock(sc); 721 722 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 723 for (ntries = 0; ntries < 100; ntries++) { 724 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 725 break; 726 DELAY(10); 727 } 728 #ifdef WPI_DEBUG 729 if (ntries == 100 && wpi_debug > 0) 730 aprint_error("%s: timeout resetting Rx ring\n", 731 sc->sc_dev.dv_xname); 732 #endif 733 wpi_mem_unlock(sc); 734 735 ring->cur = 0; 736 } 737 738 static void 739 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 740 { 741 int i; 742 743 wpi_dma_contig_free(&ring->desc_dma); 744 745 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 746 if (ring->data[i].m != NULL) 747 m_freem(ring->data[i].m); 748 } 749 } 750 751 static int 752 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 753 int qid) 754 { 755 struct wpi_tx_data *data; 756 int i, error; 757 758 ring->qid = qid; 759 ring->count = count; 760 ring->queued = 0; 761 ring->cur = 0; 762 763 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 764 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 765 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 766 if (error != 0) { 767 aprint_error("%s: could not allocate tx ring DMA memory\n", 768 sc->sc_dev.dv_xname); 769 goto fail; 770 } 771 772 /* update shared page with ring's base address */ 773 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 774 775 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 776 (void **)&ring->cmd, 777 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 778 if (error != 0) { 779 aprint_error("%s: could not allocate tx cmd DMA memory\n", 780 sc->sc_dev.dv_xname); 781 goto fail; 782 } 783 784 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 785 M_NOWAIT); 786 if (ring->data == NULL) { 787 aprint_error("%s: could not allocate tx data slots\n", 788 sc->sc_dev.dv_xname); 789 goto fail; 790 } 791 792 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 793 794 for (i = 0; i < count; i++) { 795 data = &ring->data[i]; 796 797 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 798 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 799 &data->map); 800 if (error != 0) { 801 aprint_error("%s: could not create tx buf DMA map\n", 802 sc->sc_dev.dv_xname); 803 goto fail; 804 } 805 } 806 807 return 0; 808 809 fail: wpi_free_tx_ring(sc, ring); 810 return error; 811 } 812 813 static void 814 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 815 { 816 struct wpi_tx_data *data; 817 int i, ntries; 818 819 wpi_mem_lock(sc); 820 821 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 822 for (ntries = 0; ntries < 100; ntries++) { 823 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 824 break; 825 DELAY(10); 826 } 827 #ifdef WPI_DEBUG 828 if (ntries == 100 && wpi_debug > 0) { 829 aprint_error("%s: timeout resetting Tx ring %d\n", 830 sc->sc_dev.dv_xname, ring->qid); 831 } 832 #endif 833 wpi_mem_unlock(sc); 834 835 for (i = 0; i < ring->count; i++) { 836 data = &ring->data[i]; 837 838 if (data->m != NULL) { 839 bus_dmamap_unload(sc->sc_dmat, data->map); 840 m_freem(data->m); 841 data->m = NULL; 842 } 843 } 844 845 ring->queued = 0; 846 ring->cur = 0; 847 } 848 849 static void 850 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 851 { 852 struct wpi_tx_data *data; 853 int i; 854 855 wpi_dma_contig_free(&ring->desc_dma); 856 wpi_dma_contig_free(&ring->cmd_dma); 857 858 if (ring->data != NULL) { 859 for (i = 0; i < ring->count; i++) { 860 data = &ring->data[i]; 861 862 if (data->m != NULL) { 863 bus_dmamap_unload(sc->sc_dmat, data->map); 864 m_freem(data->m); 865 } 866 } 867 free(ring->data, M_DEVBUF); 868 } 869 } 870 871 /*ARGUSED*/ 872 static struct ieee80211_node * 873 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 874 { 875 struct wpi_node *wn; 876 877 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 878 879 if (wn != NULL) 880 memset(wn, 0, sizeof (struct wpi_node)); 881 return (struct ieee80211_node *)wn; 882 } 883 884 static void 885 wpi_newassoc(struct ieee80211_node *ni, int isnew) 886 { 887 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 888 int i; 889 890 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 891 892 /* set rate to some reasonable initial value */ 893 for (i = ni->ni_rates.rs_nrates - 1; 894 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 895 i--); 896 ni->ni_txrate = i; 897 } 898 899 static int 900 wpi_media_change(struct ifnet *ifp) 901 { 902 int error; 903 904 error = ieee80211_media_change(ifp); 905 if (error != ENETRESET) 906 return error; 907 908 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 909 wpi_init(ifp); 910 911 return 0; 912 } 913 914 static int 915 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 916 { 917 struct ifnet *ifp = ic->ic_ifp; 918 struct wpi_softc *sc = ifp->if_softc; 919 struct ieee80211_node *ni; 920 int error; 921 922 callout_stop(&sc->calib_to); 923 924 switch (nstate) { 925 case IEEE80211_S_SCAN: 926 ieee80211_node_table_reset(&ic->ic_scan); 927 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 928 929 /* make the link LED blink while we're scanning */ 930 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 931 932 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 933 aprint_error("%s: could not initiate scan\n", 934 sc->sc_dev.dv_xname); 935 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 936 return error; 937 } 938 939 ic->ic_state = nstate; 940 return 0; 941 942 case IEEE80211_S_ASSOC: 943 if (ic->ic_state != IEEE80211_S_RUN) 944 break; 945 /* FALLTHROUGH */ 946 case IEEE80211_S_AUTH: 947 sc->config.associd = 0; 948 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 949 if ((error = wpi_auth(sc)) != 0) { 950 aprint_error("%s: could not send authentication request\n", 951 sc->sc_dev.dv_xname); 952 return error; 953 } 954 break; 955 956 case IEEE80211_S_RUN: 957 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 958 /* link LED blinks while monitoring */ 959 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 960 break; 961 } 962 963 ni = ic->ic_bss; 964 965 if (ic->ic_opmode != IEEE80211_M_STA) { 966 (void) wpi_auth(sc); /* XXX */ 967 wpi_setup_beacon(sc, ni); 968 } 969 970 wpi_enable_tsf(sc, ni); 971 972 /* update adapter's configuration */ 973 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 974 /* short preamble/slot time are negotiated when associating */ 975 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 976 WPI_CONFIG_SHSLOT); 977 if (ic->ic_flags & IEEE80211_F_SHSLOT) 978 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 979 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 980 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 981 sc->config.filter |= htole32(WPI_FILTER_BSS); 982 if (ic->ic_opmode != IEEE80211_M_STA) 983 sc->config.filter |= htole32(WPI_FILTER_BEACON); 984 985 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 986 987 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 988 sc->config.flags)); 989 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 990 sizeof (struct wpi_config), 1); 991 if (error != 0) { 992 aprint_error("%s: could not update configuration\n", 993 sc->sc_dev.dv_xname); 994 return error; 995 } 996 997 /* configuration has changed, set Tx power accordingly */ 998 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 999 aprint_error("%s: could not set Tx power\n", 1000 sc->sc_dev.dv_xname); 1001 return error; 1002 } 1003 1004 if (ic->ic_opmode == IEEE80211_M_STA) { 1005 /* fake a join to init the tx rate */ 1006 wpi_newassoc(ni, 1); 1007 } 1008 1009 /* start periodic calibration timer */ 1010 sc->calib_cnt = 0; 1011 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 1012 1013 /* link LED always on while associated */ 1014 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 1015 break; 1016 1017 case IEEE80211_S_INIT: 1018 break; 1019 } 1020 1021 return sc->sc_newstate(ic, nstate, arg); 1022 } 1023 1024 /* 1025 * Grab exclusive access to NIC memory. 1026 */ 1027 static void 1028 wpi_mem_lock(struct wpi_softc *sc) 1029 { 1030 uint32_t tmp; 1031 int ntries; 1032 1033 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1034 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1035 1036 /* spin until we actually get the lock */ 1037 for (ntries = 0; ntries < 1000; ntries++) { 1038 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1039 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1040 break; 1041 DELAY(10); 1042 } 1043 if (ntries == 1000) 1044 aprint_error("%s: could not lock memory\n", sc->sc_dev.dv_xname); 1045 } 1046 1047 /* 1048 * Release lock on NIC memory. 1049 */ 1050 static void 1051 wpi_mem_unlock(struct wpi_softc *sc) 1052 { 1053 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1054 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1055 } 1056 1057 static uint32_t 1058 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1059 { 1060 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1061 return WPI_READ(sc, WPI_READ_MEM_DATA); 1062 } 1063 1064 static void 1065 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1066 { 1067 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1068 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1069 } 1070 1071 static void 1072 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1073 const uint32_t *data, int wlen) 1074 { 1075 for (; wlen > 0; wlen--, data++, addr += 4) 1076 wpi_mem_write(sc, addr, *data); 1077 } 1078 1079 1080 /* 1081 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1082 * instead of using the traditional bit-bang method. 1083 */ 1084 static int 1085 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1086 { 1087 uint8_t *out = data; 1088 uint32_t val; 1089 int ntries; 1090 1091 wpi_mem_lock(sc); 1092 for (; len > 0; len -= 2, addr++) { 1093 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1094 1095 for (ntries = 0; ntries < 10; ntries++) { 1096 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1097 WPI_EEPROM_READY) 1098 break; 1099 DELAY(5); 1100 } 1101 if (ntries == 10) { 1102 aprint_error("%s: could not read EEPROM\n", 1103 sc->sc_dev.dv_xname); 1104 return ETIMEDOUT; 1105 } 1106 *out++ = val >> 16; 1107 if (len > 1) 1108 *out++ = val >> 24; 1109 } 1110 wpi_mem_unlock(sc); 1111 1112 return 0; 1113 } 1114 1115 /* 1116 * The firmware boot code is small and is intended to be copied directly into 1117 * the NIC internal memory. 1118 */ 1119 int 1120 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1121 { 1122 int ntries; 1123 1124 size /= sizeof (uint32_t); 1125 1126 wpi_mem_lock(sc); 1127 1128 /* copy microcode image into NIC memory */ 1129 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1130 (const uint32_t *)ucode, size); 1131 1132 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1133 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1134 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1135 1136 /* run microcode */ 1137 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1138 1139 /* wait for transfer to complete */ 1140 for (ntries = 0; ntries < 1000; ntries++) { 1141 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1142 break; 1143 DELAY(10); 1144 } 1145 if (ntries == 1000) { 1146 wpi_mem_unlock(sc); 1147 printf("%s: could not load boot firmware\n", 1148 sc->sc_dev.dv_xname); 1149 return ETIMEDOUT; 1150 } 1151 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1152 1153 wpi_mem_unlock(sc); 1154 1155 return 0; 1156 } 1157 1158 static int 1159 wpi_load_firmware(struct wpi_softc *sc) 1160 { 1161 struct wpi_dma_info *dma = &sc->fw_dma; 1162 struct wpi_firmware_hdr hdr; 1163 const uint8_t *init_text, *init_data, *main_text, *main_data; 1164 const uint8_t *boot_text; 1165 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1166 uint32_t boot_textsz; 1167 firmware_handle_t fw; 1168 u_char *dfw; 1169 size_t size; 1170 int error; 1171 1172 /* load firmware image from disk */ 1173 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1174 aprint_error("%s: could not read firmware file\n", 1175 sc->sc_dev.dv_xname); 1176 goto fail1; 1177 } 1178 1179 size = firmware_get_size(fw); 1180 1181 /* extract firmware header information */ 1182 if (size < sizeof (struct wpi_firmware_hdr)) { 1183 aprint_error("%s: truncated firmware header: %zu bytes\n", 1184 sc->sc_dev.dv_xname, size); 1185 error = EINVAL; 1186 goto fail2; 1187 } 1188 1189 if ((error = firmware_read(fw, 0, &hdr, 1190 sizeof (struct wpi_firmware_hdr))) != 0) { 1191 aprint_error("%s: can't get firmware header\n", 1192 sc->sc_dev.dv_xname); 1193 goto fail2; 1194 } 1195 1196 main_textsz = le32toh(hdr.main_textsz); 1197 main_datasz = le32toh(hdr.main_datasz); 1198 init_textsz = le32toh(hdr.init_textsz); 1199 init_datasz = le32toh(hdr.init_datasz); 1200 boot_textsz = le32toh(hdr.boot_textsz); 1201 1202 /* sanity-check firmware segments sizes */ 1203 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1204 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1205 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1206 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1207 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1208 (boot_textsz & 3) != 0) { 1209 printf("%s: invalid firmware header\n", sc->sc_dev.dv_xname); 1210 error = EINVAL; 1211 goto fail2; 1212 } 1213 1214 /* check that all firmware segments are present */ 1215 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1216 main_datasz + init_textsz + init_datasz + boot_textsz) { 1217 aprint_error("%s: firmware file too short: %zu bytes\n", 1218 sc->sc_dev.dv_xname, size); 1219 error = EINVAL; 1220 goto fail2; 1221 } 1222 1223 dfw = firmware_malloc(size); 1224 if (dfw == NULL) { 1225 aprint_error("%s: not enough memory to stock firmware\n", 1226 sc->sc_dev.dv_xname); 1227 error = ENOMEM; 1228 goto fail2; 1229 } 1230 1231 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1232 aprint_error("%s: can't get firmware\n", 1233 sc->sc_dev.dv_xname); 1234 goto fail2; 1235 } 1236 1237 /* get pointers to firmware segments */ 1238 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1239 main_data = main_text + main_textsz; 1240 init_text = main_data + main_datasz; 1241 init_data = init_text + init_textsz; 1242 boot_text = init_data + init_datasz; 1243 1244 /* copy initialization images into pre-allocated DMA-safe memory */ 1245 memcpy(dma->vaddr, init_data, init_datasz); 1246 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1247 1248 /* tell adapter where to find initialization images */ 1249 wpi_mem_lock(sc); 1250 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1251 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1252 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1253 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1254 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1255 wpi_mem_unlock(sc); 1256 1257 /* load firmware boot code */ 1258 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1259 printf("%s: could not load boot firmware\n", 1260 sc->sc_dev.dv_xname); 1261 goto fail3; 1262 } 1263 1264 /* now press "execute" ;-) */ 1265 WPI_WRITE(sc, WPI_RESET, 0); 1266 1267 /* ..and wait at most one second for adapter to initialize */ 1268 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1269 /* this isn't what was supposed to happen.. */ 1270 aprint_error("%s: timeout waiting for adapter to initialize\n", 1271 sc->sc_dev.dv_xname); 1272 } 1273 1274 /* copy runtime images into pre-allocated DMA-safe memory */ 1275 memcpy(dma->vaddr, main_data, main_datasz); 1276 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1277 1278 /* tell adapter where to find runtime images */ 1279 wpi_mem_lock(sc); 1280 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1281 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1282 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1283 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1284 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1285 wpi_mem_unlock(sc); 1286 1287 /* wait at most one second for second alive notification */ 1288 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1289 /* this isn't what was supposed to happen.. */ 1290 printf("%s: timeout waiting for adapter to initialize\n", 1291 sc->sc_dev.dv_xname); 1292 } 1293 1294 1295 fail3: firmware_free(dfw,size); 1296 fail2: firmware_close(fw); 1297 fail1: return error; 1298 } 1299 1300 static void 1301 wpi_calib_timeout(void *arg) 1302 { 1303 struct wpi_softc *sc = arg; 1304 struct ieee80211com *ic = &sc->sc_ic; 1305 int temp, s; 1306 1307 /* automatic rate control triggered every 500ms */ 1308 if (ic->ic_fixed_rate == -1) { 1309 s = splnet(); 1310 if (ic->ic_opmode == IEEE80211_M_STA) 1311 wpi_iter_func(sc, ic->ic_bss); 1312 else 1313 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1314 splx(s); 1315 } 1316 1317 /* update sensor data */ 1318 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1319 1320 /* automatic power calibration every 60s */ 1321 if (++sc->calib_cnt >= 120) { 1322 wpi_power_calibration(sc, temp); 1323 sc->calib_cnt = 0; 1324 } 1325 1326 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 1327 } 1328 1329 static void 1330 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1331 { 1332 struct wpi_softc *sc = arg; 1333 struct wpi_node *wn = (struct wpi_node *)ni; 1334 1335 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1336 } 1337 1338 /* 1339 * This function is called periodically (every 60 seconds) to adjust output 1340 * power to temperature changes. 1341 */ 1342 void 1343 wpi_power_calibration(struct wpi_softc *sc, int temp) 1344 { 1345 /* sanity-check read value */ 1346 if (temp < -260 || temp > 25) { 1347 /* this can't be correct, ignore */ 1348 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1349 return; 1350 } 1351 1352 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1353 1354 /* adjust Tx power if need be */ 1355 if (abs(temp - sc->temp) <= 6) 1356 return; 1357 1358 sc->temp = temp; 1359 1360 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1361 /* just warn, too bad for the automatic calibration... */ 1362 aprint_error("%s: could not adjust Tx power\n", 1363 sc->sc_dev.dv_xname); 1364 } 1365 } 1366 1367 static void 1368 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1369 struct wpi_rx_data *data) 1370 { 1371 struct ieee80211com *ic = &sc->sc_ic; 1372 struct ifnet *ifp = ic->ic_ifp; 1373 struct wpi_rx_ring *ring = &sc->rxq; 1374 struct wpi_rx_stat *stat; 1375 struct wpi_rx_head *head; 1376 struct wpi_rx_tail *tail; 1377 struct wpi_rbuf *rbuf; 1378 struct ieee80211_frame *wh; 1379 struct ieee80211_node *ni; 1380 struct mbuf *m, *mnew; 1381 int data_off ; 1382 1383 stat = (struct wpi_rx_stat *)(desc + 1); 1384 1385 if (stat->len > WPI_STAT_MAXLEN) { 1386 aprint_error("%s: invalid rx statistic header\n", 1387 sc->sc_dev.dv_xname); 1388 ifp->if_ierrors++; 1389 return; 1390 } 1391 1392 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1393 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1394 1395 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1396 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1397 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1398 le64toh(tail->tstamp))); 1399 1400 /* 1401 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1402 * to radiotap in monitor mode). 1403 */ 1404 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1405 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1406 ifp->if_ierrors++; 1407 return; 1408 } 1409 1410 /* Compute where are the useful datas */ 1411 data_off = (char*)(head + 1) - mtod(data->m, char*); 1412 1413 /* 1414 * If the number of free entry is too low 1415 * just dup the data->m socket and reuse the same rbuf entry 1416 */ 1417 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1418 1419 /* Prepare the mbuf for the m_dup */ 1420 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1421 data->m->m_data = (char*) data->m->m_data + data_off; 1422 1423 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1424 1425 /* Restore the m_data pointer for future use */ 1426 data->m->m_data = (char*) data->m->m_data - data_off; 1427 1428 if (m == NULL) { 1429 ifp->if_ierrors++; 1430 return; 1431 } 1432 } else { 1433 1434 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1435 if (mnew == NULL) { 1436 ifp->if_ierrors++; 1437 return; 1438 } 1439 1440 rbuf = wpi_alloc_rbuf(sc); 1441 KASSERT(rbuf != NULL); 1442 1443 /* attach Rx buffer to mbuf */ 1444 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1445 rbuf); 1446 mnew->m_flags |= M_EXT_RW; 1447 1448 m = data->m; 1449 data->m = mnew; 1450 1451 /* update Rx descriptor */ 1452 ring->desc[ring->cur] = htole32(rbuf->paddr); 1453 1454 m->m_data = (char*)m->m_data + data_off; 1455 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1456 } 1457 1458 /* finalize mbuf */ 1459 m->m_pkthdr.rcvif = ifp; 1460 1461 #if NBPFILTER > 0 1462 if (sc->sc_drvbpf != NULL) { 1463 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1464 1465 tap->wr_flags = 0; 1466 tap->wr_chan_freq = 1467 htole16(ic->ic_channels[head->chan].ic_freq); 1468 tap->wr_chan_flags = 1469 htole16(ic->ic_channels[head->chan].ic_flags); 1470 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1471 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1472 tap->wr_tsft = tail->tstamp; 1473 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1474 switch (head->rate) { 1475 /* CCK rates */ 1476 case 10: tap->wr_rate = 2; break; 1477 case 20: tap->wr_rate = 4; break; 1478 case 55: tap->wr_rate = 11; break; 1479 case 110: tap->wr_rate = 22; break; 1480 /* OFDM rates */ 1481 case 0xd: tap->wr_rate = 12; break; 1482 case 0xf: tap->wr_rate = 18; break; 1483 case 0x5: tap->wr_rate = 24; break; 1484 case 0x7: tap->wr_rate = 36; break; 1485 case 0x9: tap->wr_rate = 48; break; 1486 case 0xb: tap->wr_rate = 72; break; 1487 case 0x1: tap->wr_rate = 96; break; 1488 case 0x3: tap->wr_rate = 108; break; 1489 /* unknown rate: should not happen */ 1490 default: tap->wr_rate = 0; 1491 } 1492 if (le16toh(head->flags) & 0x4) 1493 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1494 1495 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1496 } 1497 #endif 1498 1499 /* grab a reference to the source node */ 1500 wh = mtod(m, struct ieee80211_frame *); 1501 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1502 1503 /* send the frame to the 802.11 layer */ 1504 ieee80211_input(ic, m, ni, stat->rssi, 0); 1505 1506 /* release node reference */ 1507 ieee80211_free_node(ni); 1508 } 1509 1510 static void 1511 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1512 { 1513 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1514 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1515 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1516 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1517 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1518 1519 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1520 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1521 stat->nkill, stat->rate, le32toh(stat->duration), 1522 le32toh(stat->status))); 1523 1524 /* 1525 * Update rate control statistics for the node. 1526 * XXX we should not count mgmt frames since they're always sent at 1527 * the lowest available bit-rate. 1528 */ 1529 wn->amn.amn_txcnt++; 1530 if (stat->ntries > 0) { 1531 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1532 wn->amn.amn_retrycnt++; 1533 } 1534 1535 if ((le32toh(stat->status) & 0xff) != 1) 1536 ifp->if_oerrors++; 1537 else 1538 ifp->if_opackets++; 1539 1540 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1541 m_freem(txdata->m); 1542 txdata->m = NULL; 1543 ieee80211_free_node(txdata->ni); 1544 txdata->ni = NULL; 1545 1546 ring->queued--; 1547 1548 sc->sc_tx_timer = 0; 1549 ifp->if_flags &= ~IFF_OACTIVE; 1550 wpi_start(ifp); 1551 } 1552 1553 static void 1554 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1555 { 1556 struct wpi_tx_ring *ring = &sc->cmdq; 1557 struct wpi_tx_data *data; 1558 1559 if ((desc->qid & 7) != 4) 1560 return; /* not a command ack */ 1561 1562 data = &ring->data[desc->idx]; 1563 1564 /* if the command was mapped in a mbuf, free it */ 1565 if (data->m != NULL) { 1566 bus_dmamap_unload(sc->sc_dmat, data->map); 1567 m_freem(data->m); 1568 data->m = NULL; 1569 } 1570 1571 wakeup(&ring->cmd[desc->idx]); 1572 } 1573 1574 static void 1575 wpi_notif_intr(struct wpi_softc *sc) 1576 { 1577 struct ieee80211com *ic = &sc->sc_ic; 1578 struct ifnet *ifp = ic->ic_ifp; 1579 struct wpi_rx_desc *desc; 1580 struct wpi_rx_data *data; 1581 uint32_t hw; 1582 1583 hw = le32toh(sc->shared->next); 1584 while (sc->rxq.cur != hw) { 1585 data = &sc->rxq.data[sc->rxq.cur]; 1586 1587 desc = mtod(data->m, struct wpi_rx_desc *); 1588 1589 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1590 "len=%d\n", desc->qid, desc->idx, desc->flags, 1591 desc->type, le32toh(desc->len))); 1592 1593 if (!(desc->qid & 0x80)) /* reply to a command */ 1594 wpi_cmd_intr(sc, desc); 1595 1596 switch (desc->type) { 1597 case WPI_RX_DONE: 1598 /* a 802.11 frame was received */ 1599 wpi_rx_intr(sc, desc, data); 1600 break; 1601 1602 case WPI_TX_DONE: 1603 /* a 802.11 frame has been transmitted */ 1604 wpi_tx_intr(sc, desc); 1605 break; 1606 1607 case WPI_UC_READY: 1608 { 1609 struct wpi_ucode_info *uc = 1610 (struct wpi_ucode_info *)(desc + 1); 1611 1612 /* the microcontroller is ready */ 1613 DPRINTF(("microcode alive notification version %x " 1614 "alive %x\n", le32toh(uc->version), 1615 le32toh(uc->valid))); 1616 1617 if (le32toh(uc->valid) != 1) { 1618 aprint_error("%s: microcontroller " 1619 "initialization failed\n", 1620 sc->sc_dev.dv_xname); 1621 } 1622 break; 1623 } 1624 case WPI_STATE_CHANGED: 1625 { 1626 uint32_t *status = (uint32_t *)(desc + 1); 1627 1628 /* enabled/disabled notification */ 1629 DPRINTF(("state changed to %x\n", le32toh(*status))); 1630 1631 if (le32toh(*status) & 1) { 1632 /* the radio button has to be pushed */ 1633 aprint_error("%s: Radio transmitter is off\n", 1634 sc->sc_dev.dv_xname); 1635 /* turn the interface down */ 1636 ifp->if_flags &= ~IFF_UP; 1637 wpi_stop(ifp, 1); 1638 return; /* no further processing */ 1639 } 1640 break; 1641 } 1642 case WPI_START_SCAN: 1643 { 1644 struct wpi_start_scan *scan = 1645 (struct wpi_start_scan *)(desc + 1); 1646 1647 DPRINTFN(2, ("scanning channel %d status %x\n", 1648 scan->chan, le32toh(scan->status))); 1649 1650 /* fix current channel */ 1651 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1652 break; 1653 } 1654 case WPI_STOP_SCAN: 1655 { 1656 struct wpi_stop_scan *scan = 1657 (struct wpi_stop_scan *)(desc + 1); 1658 1659 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1660 scan->nchan, scan->status, scan->chan)); 1661 1662 if (scan->status == 1 && scan->chan <= 14) { 1663 /* 1664 * We just finished scanning 802.11g channels, 1665 * start scanning 802.11a ones. 1666 */ 1667 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1668 break; 1669 } 1670 ieee80211_end_scan(ic); 1671 break; 1672 } 1673 } 1674 1675 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1676 } 1677 1678 /* tell the firmware what we have processed */ 1679 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1680 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1681 } 1682 1683 static int 1684 wpi_intr(void *arg) 1685 { 1686 struct wpi_softc *sc = arg; 1687 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1688 uint32_t r; 1689 1690 r = WPI_READ(sc, WPI_INTR); 1691 if (r == 0 || r == 0xffffffff) 1692 return 0; /* not for us */ 1693 1694 DPRINTFN(5, ("interrupt reg %x\n", r)); 1695 1696 /* disable interrupts */ 1697 WPI_WRITE(sc, WPI_MASK, 0); 1698 /* ack interrupts */ 1699 WPI_WRITE(sc, WPI_INTR, r); 1700 1701 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1702 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1703 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1704 wpi_stop(sc->sc_ic.ic_ifp, 1); 1705 return 1; 1706 } 1707 1708 if (r & WPI_RX_INTR) 1709 wpi_notif_intr(sc); 1710 1711 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1712 wakeup(sc); 1713 1714 /* re-enable interrupts */ 1715 if (ifp->if_flags & IFF_UP) 1716 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1717 1718 return 1; 1719 } 1720 1721 static uint8_t 1722 wpi_plcp_signal(int rate) 1723 { 1724 switch (rate) { 1725 /* CCK rates (returned values are device-dependent) */ 1726 case 2: return 10; 1727 case 4: return 20; 1728 case 11: return 55; 1729 case 22: return 110; 1730 1731 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1732 /* R1-R4, (u)ral is R4-R1 */ 1733 case 12: return 0xd; 1734 case 18: return 0xf; 1735 case 24: return 0x5; 1736 case 36: return 0x7; 1737 case 48: return 0x9; 1738 case 72: return 0xb; 1739 case 96: return 0x1; 1740 case 108: return 0x3; 1741 1742 /* unsupported rates (should not get there) */ 1743 default: return 0; 1744 } 1745 } 1746 1747 /* quickly determine if a given rate is CCK or OFDM */ 1748 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1749 1750 static int 1751 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1752 int ac) 1753 { 1754 struct ieee80211com *ic = &sc->sc_ic; 1755 struct wpi_tx_ring *ring = &sc->txq[ac]; 1756 struct wpi_tx_desc *desc; 1757 struct wpi_tx_data *data; 1758 struct wpi_tx_cmd *cmd; 1759 struct wpi_cmd_data *tx; 1760 struct ieee80211_frame *wh; 1761 struct ieee80211_key *k; 1762 const struct chanAccParams *cap; 1763 struct mbuf *mnew; 1764 int i, error, rate, hdrlen, noack = 0; 1765 1766 desc = &ring->desc[ring->cur]; 1767 data = &ring->data[ring->cur]; 1768 1769 wh = mtod(m0, struct ieee80211_frame *); 1770 1771 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1772 hdrlen = sizeof (struct ieee80211_qosframe); 1773 cap = &ic->ic_wme.wme_chanParams; 1774 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1775 } else 1776 hdrlen = sizeof (struct ieee80211_frame); 1777 1778 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1779 k = ieee80211_crypto_encap(ic, ni, m0); 1780 if (k == NULL) { 1781 m_freem(m0); 1782 return ENOBUFS; 1783 } 1784 1785 /* packet header may have moved, reset our local pointer */ 1786 wh = mtod(m0, struct ieee80211_frame *); 1787 } 1788 1789 /* pickup a rate */ 1790 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1791 IEEE80211_FC0_TYPE_MGT) { 1792 /* mgmt frames are sent at the lowest available bit-rate */ 1793 rate = ni->ni_rates.rs_rates[0]; 1794 } else { 1795 if (ic->ic_fixed_rate != -1) { 1796 rate = ic->ic_sup_rates[ic->ic_curmode]. 1797 rs_rates[ic->ic_fixed_rate]; 1798 } else 1799 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1800 } 1801 rate &= IEEE80211_RATE_VAL; 1802 1803 1804 #if NBPFILTER > 0 1805 if (sc->sc_drvbpf != NULL) { 1806 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1807 1808 tap->wt_flags = 0; 1809 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1810 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1811 tap->wt_rate = rate; 1812 tap->wt_hwqueue = ac; 1813 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1814 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1815 1816 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1817 } 1818 #endif 1819 1820 cmd = &ring->cmd[ring->cur]; 1821 cmd->code = WPI_CMD_TX_DATA; 1822 cmd->flags = 0; 1823 cmd->qid = ring->qid; 1824 cmd->idx = ring->cur; 1825 1826 tx = (struct wpi_cmd_data *)cmd->data; 1827 tx->flags = 0; 1828 1829 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1830 tx->flags |= htole32(WPI_TX_NEED_ACK); 1831 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1832 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1833 1834 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1835 1836 /* retrieve destination node's id */ 1837 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1838 WPI_ID_BSS; 1839 1840 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1841 IEEE80211_FC0_TYPE_MGT) { 1842 /* tell h/w to set timestamp in probe responses */ 1843 if ((wh->i_fc[0] & 1844 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1845 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1846 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1847 1848 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1849 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1850 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1851 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1852 tx->timeout = htole16(3); 1853 else 1854 tx->timeout = htole16(2); 1855 } else 1856 tx->timeout = htole16(0); 1857 1858 tx->rate = wpi_plcp_signal(rate); 1859 1860 /* be very persistant at sending frames out */ 1861 tx->rts_ntries = 7; 1862 tx->data_ntries = 15; 1863 1864 tx->ofdm_mask = 0xff; 1865 tx->cck_mask = 0xf; 1866 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1867 1868 tx->len = htole16(m0->m_pkthdr.len); 1869 1870 /* save and trim IEEE802.11 header */ 1871 m_copydata(m0, 0, hdrlen, (void *)&tx->wh); 1872 m_adj(m0, hdrlen); 1873 1874 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1875 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1876 if (error != 0 && error != EFBIG) { 1877 aprint_error("%s: could not map mbuf (error %d)\n", 1878 sc->sc_dev.dv_xname, error); 1879 m_freem(m0); 1880 return error; 1881 } 1882 if (error != 0) { 1883 /* too many fragments, linearize */ 1884 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1885 if (mnew == NULL) { 1886 m_freem(m0); 1887 return ENOMEM; 1888 } 1889 1890 M_COPY_PKTHDR(mnew, m0); 1891 if (m0->m_pkthdr.len > MHLEN) { 1892 MCLGET(mnew, M_DONTWAIT); 1893 if (!(mnew->m_flags & M_EXT)) { 1894 m_freem(m0); 1895 m_freem(mnew); 1896 return ENOMEM; 1897 } 1898 } 1899 1900 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1901 m_freem(m0); 1902 mnew->m_len = mnew->m_pkthdr.len; 1903 m0 = mnew; 1904 1905 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1906 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1907 if (error != 0) { 1908 aprint_error("%s: could not map mbuf (error %d)\n", 1909 sc->sc_dev.dv_xname, error); 1910 m_freem(m0); 1911 return error; 1912 } 1913 } 1914 1915 data->m = m0; 1916 data->ni = ni; 1917 1918 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1919 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1920 1921 /* first scatter/gather segment is used by the tx data command */ 1922 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1923 (1 + data->map->dm_nsegs) << 24); 1924 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1925 ring->cur * sizeof (struct wpi_tx_cmd)); 1926 /*XXX The next line might be wrong. I don't use hdrlen*/ 1927 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1928 1929 for (i = 1; i <= data->map->dm_nsegs; i++) { 1930 desc->segs[i].addr = 1931 htole32(data->map->dm_segs[i - 1].ds_addr); 1932 desc->segs[i].len = 1933 htole32(data->map->dm_segs[i - 1].ds_len); 1934 } 1935 1936 ring->queued++; 1937 1938 /* kick ring */ 1939 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1940 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1941 1942 return 0; 1943 } 1944 1945 static void 1946 wpi_start(struct ifnet *ifp) 1947 { 1948 struct wpi_softc *sc = ifp->if_softc; 1949 struct ieee80211com *ic = &sc->sc_ic; 1950 struct ieee80211_node *ni; 1951 struct ether_header *eh; 1952 struct mbuf *m0; 1953 int ac; 1954 1955 /* 1956 * net80211 may still try to send management frames even if the 1957 * IFF_RUNNING flag is not set... 1958 */ 1959 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1960 return; 1961 1962 for (;;) { 1963 IF_POLL(&ic->ic_mgtq, m0); 1964 if (m0 != NULL) { 1965 IF_DEQUEUE(&ic->ic_mgtq, m0); 1966 1967 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1968 m0->m_pkthdr.rcvif = NULL; 1969 1970 /* management frames go into ring 0 */ 1971 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1972 ifp->if_oerrors++; 1973 continue; 1974 } 1975 #if NBPFILTER > 0 1976 if (ic->ic_rawbpf != NULL) 1977 bpf_mtap(ic->ic_rawbpf, m0); 1978 #endif 1979 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1980 ifp->if_oerrors++; 1981 break; 1982 } 1983 } else { 1984 if (ic->ic_state != IEEE80211_S_RUN) 1985 break; 1986 IFQ_POLL(&ifp->if_snd, m0); 1987 if (m0 == NULL) 1988 break; 1989 1990 if (m0->m_len < sizeof (*eh) && 1991 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 1992 ifp->if_oerrors++; 1993 continue; 1994 } 1995 eh = mtod(m0, struct ether_header *); 1996 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1997 if (ni == NULL) { 1998 m_freem(m0); 1999 ifp->if_oerrors++; 2000 continue; 2001 } 2002 2003 /* classify mbuf so we can find which tx ring to use */ 2004 if (ieee80211_classify(ic, m0, ni) != 0) { 2005 m_freem(m0); 2006 ieee80211_free_node(ni); 2007 ifp->if_oerrors++; 2008 continue; 2009 } 2010 2011 /* no QoS encapsulation for EAPOL frames */ 2012 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2013 M_WME_GETAC(m0) : WME_AC_BE; 2014 2015 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2016 /* there is no place left in this ring */ 2017 ifp->if_flags |= IFF_OACTIVE; 2018 break; 2019 } 2020 IFQ_DEQUEUE(&ifp->if_snd, m0); 2021 #if NBPFILTER > 0 2022 if (ifp->if_bpf != NULL) 2023 bpf_mtap(ifp->if_bpf, m0); 2024 #endif 2025 m0 = ieee80211_encap(ic, m0, ni); 2026 if (m0 == NULL) { 2027 ieee80211_free_node(ni); 2028 ifp->if_oerrors++; 2029 continue; 2030 } 2031 #if NBPFILTER > 0 2032 if (ic->ic_rawbpf != NULL) 2033 bpf_mtap(ic->ic_rawbpf, m0); 2034 #endif 2035 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2036 ieee80211_free_node(ni); 2037 ifp->if_oerrors++; 2038 break; 2039 } 2040 } 2041 2042 sc->sc_tx_timer = 5; 2043 ifp->if_timer = 1; 2044 } 2045 } 2046 2047 static void 2048 wpi_watchdog(struct ifnet *ifp) 2049 { 2050 struct wpi_softc *sc = ifp->if_softc; 2051 2052 ifp->if_timer = 0; 2053 2054 if (sc->sc_tx_timer > 0) { 2055 if (--sc->sc_tx_timer == 0) { 2056 aprint_error("%s: device timeout\n", 2057 sc->sc_dev.dv_xname); 2058 ifp->if_oerrors++; 2059 ifp->if_flags &= ~IFF_UP; 2060 wpi_stop(ifp, 1); 2061 return; 2062 } 2063 ifp->if_timer = 1; 2064 } 2065 2066 ieee80211_watchdog(&sc->sc_ic); 2067 } 2068 2069 static int 2070 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2071 { 2072 #define IS_RUNNING(ifp) \ 2073 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2074 2075 struct wpi_softc *sc = ifp->if_softc; 2076 struct ieee80211com *ic = &sc->sc_ic; 2077 struct ifreq *ifr = (struct ifreq *)data; 2078 int s, error = 0; 2079 2080 s = splnet(); 2081 2082 switch (cmd) { 2083 case SIOCSIFFLAGS: 2084 if (ifp->if_flags & IFF_UP) { 2085 if (!(ifp->if_flags & IFF_RUNNING)) 2086 wpi_init(ifp); 2087 } else { 2088 if (ifp->if_flags & IFF_RUNNING) 2089 wpi_stop(ifp, 1); 2090 } 2091 break; 2092 2093 case SIOCADDMULTI: 2094 case SIOCDELMULTI: 2095 error = (cmd == SIOCADDMULTI) ? 2096 ether_addmulti(ifr, &sc->sc_ec) : 2097 ether_delmulti(ifr, &sc->sc_ec); 2098 if (error == ENETRESET) { 2099 /* setup multicast filter, etc */ 2100 error = 0; 2101 } 2102 break; 2103 2104 default: 2105 error = ieee80211_ioctl(ic, cmd, data); 2106 } 2107 2108 if (error == ENETRESET) { 2109 if (IS_RUNNING(ifp) && 2110 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2111 wpi_init(ifp); 2112 error = 0; 2113 } 2114 2115 splx(s); 2116 return error; 2117 2118 #undef IS_RUNNING 2119 } 2120 2121 /* 2122 * Extract various information from EEPROM. 2123 */ 2124 static void 2125 wpi_read_eeprom(struct wpi_softc *sc) 2126 { 2127 struct ieee80211com *ic = &sc->sc_ic; 2128 char domain[4]; 2129 int i; 2130 2131 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2132 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2133 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2134 2135 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2136 sc->type)); 2137 2138 /* read and print regulatory domain */ 2139 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2140 aprint_normal(", %.4s", domain); 2141 2142 /* read and print MAC address */ 2143 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2144 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2145 2146 /* read the list of authorized channels */ 2147 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2148 wpi_read_eeprom_channels(sc, i); 2149 2150 /* read the list of power groups */ 2151 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2152 wpi_read_eeprom_group(sc, i); 2153 } 2154 2155 static void 2156 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2157 { 2158 struct ieee80211com *ic = &sc->sc_ic; 2159 const struct wpi_chan_band *band = &wpi_bands[n]; 2160 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2161 int chan, i; 2162 2163 wpi_read_prom_data(sc, band->addr, channels, 2164 band->nchan * sizeof (struct wpi_eeprom_chan)); 2165 2166 for (i = 0; i < band->nchan; i++) { 2167 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2168 continue; 2169 2170 chan = band->chan[i]; 2171 2172 if (n == 0) { /* 2GHz band */ 2173 ic->ic_channels[chan].ic_freq = 2174 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2175 ic->ic_channels[chan].ic_flags = 2176 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2177 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2178 2179 } else { /* 5GHz band */ 2180 /* 2181 * Some 3945abg adapters support channels 7, 8, 11 2182 * and 12 in the 2GHz *and* 5GHz bands. 2183 * Because of limitations in our net80211(9) stack, 2184 * we can't support these channels in 5GHz band. 2185 */ 2186 if (chan <= 14) 2187 continue; 2188 2189 ic->ic_channels[chan].ic_freq = 2190 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2191 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2192 } 2193 2194 /* is active scan allowed on this channel? */ 2195 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2196 ic->ic_channels[chan].ic_flags |= 2197 IEEE80211_CHAN_PASSIVE; 2198 } 2199 2200 /* save maximum allowed power for this channel */ 2201 sc->maxpwr[chan] = channels[i].maxpwr; 2202 2203 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2204 chan, channels[i].flags, sc->maxpwr[chan])); 2205 } 2206 } 2207 2208 static void 2209 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2210 { 2211 struct wpi_power_group *group = &sc->groups[n]; 2212 struct wpi_eeprom_group rgroup; 2213 int i; 2214 2215 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2216 sizeof rgroup); 2217 2218 /* save power group information */ 2219 group->chan = rgroup.chan; 2220 group->maxpwr = rgroup.maxpwr; 2221 /* temperature at which the samples were taken */ 2222 group->temp = (int16_t)le16toh(rgroup.temp); 2223 2224 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2225 group->chan, group->maxpwr, group->temp)); 2226 2227 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2228 group->samples[i].index = rgroup.samples[i].index; 2229 group->samples[i].power = rgroup.samples[i].power; 2230 2231 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2232 group->samples[i].index, group->samples[i].power)); 2233 } 2234 } 2235 2236 /* 2237 * Send a command to the firmware. 2238 */ 2239 static int 2240 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2241 { 2242 struct wpi_tx_ring *ring = &sc->cmdq; 2243 struct wpi_tx_desc *desc; 2244 struct wpi_tx_cmd *cmd; 2245 2246 KASSERT(size <= sizeof cmd->data); 2247 2248 desc = &ring->desc[ring->cur]; 2249 cmd = &ring->cmd[ring->cur]; 2250 2251 cmd->code = code; 2252 cmd->flags = 0; 2253 cmd->qid = ring->qid; 2254 cmd->idx = ring->cur; 2255 memcpy(cmd->data, buf, size); 2256 2257 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2258 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2259 ring->cur * sizeof (struct wpi_tx_cmd)); 2260 desc->segs[0].len = htole32(4 + size); 2261 2262 /* kick cmd ring */ 2263 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2264 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2265 2266 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2267 } 2268 2269 static int 2270 wpi_wme_update(struct ieee80211com *ic) 2271 { 2272 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2273 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2274 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2275 const struct wmeParams *wmep; 2276 struct wpi_wme_setup wme; 2277 int ac; 2278 2279 /* don't override default WME values if WME is not actually enabled */ 2280 if (!(ic->ic_flags & IEEE80211_F_WME)) 2281 return 0; 2282 2283 wme.flags = 0; 2284 for (ac = 0; ac < WME_NUM_AC; ac++) { 2285 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2286 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2287 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2288 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2289 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2290 2291 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2292 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2293 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2294 } 2295 2296 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2297 #undef WPI_USEC 2298 #undef WPI_EXP2 2299 } 2300 2301 /* 2302 * Configure h/w multi-rate retries. 2303 */ 2304 static int 2305 wpi_mrr_setup(struct wpi_softc *sc) 2306 { 2307 struct ieee80211com *ic = &sc->sc_ic; 2308 struct wpi_mrr_setup mrr; 2309 int i, error; 2310 2311 /* CCK rates (not used with 802.11a) */ 2312 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2313 mrr.rates[i].flags = 0; 2314 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2315 /* fallback to the immediate lower CCK rate (if any) */ 2316 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2317 /* try one time at this rate before falling back to "next" */ 2318 mrr.rates[i].ntries = 1; 2319 } 2320 2321 /* OFDM rates (not used with 802.11b) */ 2322 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2323 mrr.rates[i].flags = 0; 2324 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2325 /* fallback to the immediate lower rate (if any) */ 2326 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2327 mrr.rates[i].next = (i == WPI_OFDM6) ? 2328 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2329 WPI_OFDM6 : WPI_CCK2) : 2330 i - 1; 2331 /* try one time at this rate before falling back to "next" */ 2332 mrr.rates[i].ntries = 1; 2333 } 2334 2335 /* setup MRR for control frames */ 2336 mrr.which = htole32(WPI_MRR_CTL); 2337 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2338 if (error != 0) { 2339 aprint_error("%s: could not setup MRR for control frames\n", 2340 sc->sc_dev.dv_xname); 2341 return error; 2342 } 2343 2344 /* setup MRR for data frames */ 2345 mrr.which = htole32(WPI_MRR_DATA); 2346 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2347 if (error != 0) { 2348 aprint_error("%s: could not setup MRR for data frames\n", 2349 sc->sc_dev.dv_xname); 2350 return error; 2351 } 2352 2353 return 0; 2354 } 2355 2356 static void 2357 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2358 { 2359 struct wpi_cmd_led led; 2360 2361 led.which = which; 2362 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2363 led.off = off; 2364 led.on = on; 2365 2366 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2367 } 2368 2369 static void 2370 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2371 { 2372 struct wpi_cmd_tsf tsf; 2373 uint64_t val, mod; 2374 2375 memset(&tsf, 0, sizeof tsf); 2376 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2377 tsf.bintval = htole16(ni->ni_intval); 2378 tsf.lintval = htole16(10); 2379 2380 /* compute remaining time until next beacon */ 2381 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2382 mod = le64toh(tsf.tstamp) % val; 2383 tsf.binitval = htole32((uint32_t)(val - mod)); 2384 2385 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2386 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2387 2388 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2389 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2390 } 2391 2392 /* 2393 * Update Tx power to match what is defined for channel `c'. 2394 */ 2395 static int 2396 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2397 { 2398 struct ieee80211com *ic = &sc->sc_ic; 2399 struct wpi_power_group *group; 2400 struct wpi_cmd_txpower txpower; 2401 u_int chan; 2402 int i; 2403 2404 /* get channel number */ 2405 chan = ieee80211_chan2ieee(ic, c); 2406 2407 /* find the power group to which this channel belongs */ 2408 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2409 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2410 if (chan <= group->chan) 2411 break; 2412 } else 2413 group = &sc->groups[0]; 2414 2415 memset(&txpower, 0, sizeof txpower); 2416 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2417 txpower.chan = htole16(chan); 2418 2419 /* set Tx power for all OFDM and CCK rates */ 2420 for (i = 0; i <= 11 ; i++) { 2421 /* retrieve Tx power for this channel/rate combination */ 2422 int idx = wpi_get_power_index(sc, group, c, 2423 wpi_ridx_to_rate[i]); 2424 2425 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2426 2427 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2428 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2429 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2430 } else { 2431 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2432 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2433 } 2434 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2435 wpi_ridx_to_rate[i], idx)); 2436 } 2437 2438 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2439 } 2440 2441 /* 2442 * Determine Tx power index for a given channel/rate combination. 2443 * This takes into account the regulatory information from EEPROM and the 2444 * current temperature. 2445 */ 2446 static int 2447 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2448 struct ieee80211_channel *c, int rate) 2449 { 2450 /* fixed-point arithmetic division using a n-bit fractional part */ 2451 #define fdivround(a, b, n) \ 2452 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2453 2454 /* linear interpolation */ 2455 #define interpolate(x, x1, y1, x2, y2, n) \ 2456 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2457 2458 struct ieee80211com *ic = &sc->sc_ic; 2459 struct wpi_power_sample *sample; 2460 int pwr, idx; 2461 u_int chan; 2462 2463 /* get channel number */ 2464 chan = ieee80211_chan2ieee(ic, c); 2465 2466 /* default power is group's maximum power - 3dB */ 2467 pwr = group->maxpwr / 2; 2468 2469 /* decrease power for highest OFDM rates to reduce distortion */ 2470 switch (rate) { 2471 case 72: /* 36Mb/s */ 2472 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2473 break; 2474 case 96: /* 48Mb/s */ 2475 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2476 break; 2477 case 108: /* 54Mb/s */ 2478 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2479 break; 2480 } 2481 2482 /* never exceed channel's maximum allowed Tx power */ 2483 pwr = min(pwr, sc->maxpwr[chan]); 2484 2485 /* retrieve power index into gain tables from samples */ 2486 for (sample = group->samples; sample < &group->samples[3]; sample++) 2487 if (pwr > sample[1].power) 2488 break; 2489 /* fixed-point linear interpolation using a 19-bit fractional part */ 2490 idx = interpolate(pwr, sample[0].power, sample[0].index, 2491 sample[1].power, sample[1].index, 19); 2492 2493 /* 2494 * Adjust power index based on current temperature: 2495 * - if cooler than factory-calibrated: decrease output power 2496 * - if warmer than factory-calibrated: increase output power 2497 */ 2498 idx -= (sc->temp - group->temp) * 11 / 100; 2499 2500 /* decrease power for CCK rates (-5dB) */ 2501 if (!WPI_RATE_IS_OFDM(rate)) 2502 idx += 10; 2503 2504 /* keep power index in a valid range */ 2505 if (idx < 0) 2506 return 0; 2507 if (idx > WPI_MAX_PWR_INDEX) 2508 return WPI_MAX_PWR_INDEX; 2509 return idx; 2510 2511 #undef interpolate 2512 #undef fdivround 2513 } 2514 2515 /* 2516 * Build a beacon frame that the firmware will broadcast periodically in 2517 * IBSS or HostAP modes. 2518 */ 2519 static int 2520 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2521 { 2522 struct ieee80211com *ic = &sc->sc_ic; 2523 struct wpi_tx_ring *ring = &sc->cmdq; 2524 struct wpi_tx_desc *desc; 2525 struct wpi_tx_data *data; 2526 struct wpi_tx_cmd *cmd; 2527 struct wpi_cmd_beacon *bcn; 2528 struct ieee80211_beacon_offsets bo; 2529 struct mbuf *m0; 2530 int error; 2531 2532 desc = &ring->desc[ring->cur]; 2533 data = &ring->data[ring->cur]; 2534 2535 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2536 if (m0 == NULL) { 2537 aprint_error("%s: could not allocate beacon frame\n", 2538 sc->sc_dev.dv_xname); 2539 return ENOMEM; 2540 } 2541 2542 cmd = &ring->cmd[ring->cur]; 2543 cmd->code = WPI_CMD_SET_BEACON; 2544 cmd->flags = 0; 2545 cmd->qid = ring->qid; 2546 cmd->idx = ring->cur; 2547 2548 bcn = (struct wpi_cmd_beacon *)cmd->data; 2549 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2550 bcn->id = WPI_ID_BROADCAST; 2551 bcn->ofdm_mask = 0xff; 2552 bcn->cck_mask = 0x0f; 2553 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2554 bcn->len = htole16(m0->m_pkthdr.len); 2555 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2556 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2557 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2558 2559 /* save and trim IEEE802.11 header */ 2560 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2561 m_adj(m0, sizeof (struct ieee80211_frame)); 2562 2563 /* assume beacon frame is contiguous */ 2564 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2565 BUS_DMA_READ | BUS_DMA_NOWAIT); 2566 if (error) { 2567 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2568 m_freem(m0); 2569 return error; 2570 } 2571 2572 data->m = m0; 2573 2574 /* first scatter/gather segment is used by the beacon command */ 2575 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2576 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2577 ring->cur * sizeof (struct wpi_tx_cmd)); 2578 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2579 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2580 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2581 2582 /* kick cmd ring */ 2583 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2584 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2585 2586 return 0; 2587 } 2588 2589 static int 2590 wpi_auth(struct wpi_softc *sc) 2591 { 2592 struct ieee80211com *ic = &sc->sc_ic; 2593 struct ieee80211_node *ni = ic->ic_bss; 2594 struct wpi_node_info node; 2595 int error; 2596 2597 /* update adapter's configuration */ 2598 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2599 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2600 sc->config.flags = htole32(WPI_CONFIG_TSF); 2601 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2602 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2603 WPI_CONFIG_24GHZ); 2604 } 2605 switch (ic->ic_curmode) { 2606 case IEEE80211_MODE_11A: 2607 sc->config.cck_mask = 0; 2608 sc->config.ofdm_mask = 0x15; 2609 break; 2610 case IEEE80211_MODE_11B: 2611 sc->config.cck_mask = 0x03; 2612 sc->config.ofdm_mask = 0; 2613 break; 2614 default: /* assume 802.11b/g */ 2615 sc->config.cck_mask = 0x0f; 2616 sc->config.ofdm_mask = 0x15; 2617 } 2618 2619 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2620 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2621 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2622 sizeof (struct wpi_config), 1); 2623 if (error != 0) { 2624 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2625 return error; 2626 } 2627 2628 /* configuration has changed, set Tx power accordingly */ 2629 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2630 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2631 return error; 2632 } 2633 2634 /* add default node */ 2635 memset(&node, 0, sizeof node); 2636 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2637 node.id = WPI_ID_BSS; 2638 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2639 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2640 node.action = htole32(WPI_ACTION_SET_RATE); 2641 node.antenna = WPI_ANTENNA_BOTH; 2642 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2643 if (error != 0) { 2644 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2645 return error; 2646 } 2647 2648 return 0; 2649 } 2650 2651 /* 2652 * Send a scan request to the firmware. Since this command is huge, we map it 2653 * into a mbuf instead of using the pre-allocated set of commands. 2654 */ 2655 static int 2656 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2657 { 2658 struct ieee80211com *ic = &sc->sc_ic; 2659 struct wpi_tx_ring *ring = &sc->cmdq; 2660 struct wpi_tx_desc *desc; 2661 struct wpi_tx_data *data; 2662 struct wpi_tx_cmd *cmd; 2663 struct wpi_scan_hdr *hdr; 2664 struct wpi_scan_chan *chan; 2665 struct ieee80211_frame *wh; 2666 struct ieee80211_rateset *rs; 2667 struct ieee80211_channel *c; 2668 enum ieee80211_phymode mode; 2669 uint8_t *frm; 2670 int nrates, pktlen, error; 2671 2672 desc = &ring->desc[ring->cur]; 2673 data = &ring->data[ring->cur]; 2674 2675 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2676 if (data->m == NULL) { 2677 aprint_error("%s: could not allocate mbuf for scan command\n", 2678 sc->sc_dev.dv_xname); 2679 return ENOMEM; 2680 } 2681 2682 MCLGET(data->m, M_DONTWAIT); 2683 if (!(data->m->m_flags & M_EXT)) { 2684 m_freem(data->m); 2685 data->m = NULL; 2686 aprint_error("%s: could not allocate mbuf for scan command\n", 2687 sc->sc_dev.dv_xname); 2688 return ENOMEM; 2689 } 2690 2691 cmd = mtod(data->m, struct wpi_tx_cmd *); 2692 cmd->code = WPI_CMD_SCAN; 2693 cmd->flags = 0; 2694 cmd->qid = ring->qid; 2695 cmd->idx = ring->cur; 2696 2697 hdr = (struct wpi_scan_hdr *)cmd->data; 2698 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2699 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2700 hdr->id = WPI_ID_BROADCAST; 2701 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2702 2703 /* 2704 * Move to the next channel if no packets are received within 5 msecs 2705 * after sending the probe request (this helps to reduce the duration 2706 * of active scans). 2707 */ 2708 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2709 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2710 2711 if (flags & IEEE80211_CHAN_A) { 2712 hdr->crc_threshold = htole16(1); 2713 /* send probe requests at 6Mbps */ 2714 hdr->rate = wpi_plcp_signal(12); 2715 } else { 2716 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2717 /* send probe requests at 1Mbps */ 2718 hdr->rate = wpi_plcp_signal(2); 2719 } 2720 2721 /* for directed scans, firmware inserts the essid IE itself */ 2722 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2723 hdr->essid[0].len = ic->ic_des_esslen; 2724 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2725 2726 /* 2727 * Build a probe request frame. Most of the following code is a 2728 * copy & paste of what is done in net80211. 2729 */ 2730 wh = (struct ieee80211_frame *)(hdr + 1); 2731 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2732 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2733 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2734 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2735 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2736 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2737 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2738 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2739 2740 frm = (uint8_t *)(wh + 1); 2741 2742 /* add empty essid IE (firmware generates it for directed scans) */ 2743 *frm++ = IEEE80211_ELEMID_SSID; 2744 *frm++ = 0; 2745 2746 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2747 rs = &ic->ic_sup_rates[mode]; 2748 2749 /* add supported rates IE */ 2750 *frm++ = IEEE80211_ELEMID_RATES; 2751 nrates = rs->rs_nrates; 2752 if (nrates > IEEE80211_RATE_SIZE) 2753 nrates = IEEE80211_RATE_SIZE; 2754 *frm++ = nrates; 2755 memcpy(frm, rs->rs_rates, nrates); 2756 frm += nrates; 2757 2758 /* add supported xrates IE */ 2759 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2760 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2761 *frm++ = IEEE80211_ELEMID_XRATES; 2762 *frm++ = nrates; 2763 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2764 frm += nrates; 2765 } 2766 2767 /* setup length of probe request */ 2768 hdr->paylen = htole16(frm - (uint8_t *)wh); 2769 2770 chan = (struct wpi_scan_chan *)frm; 2771 for (c = &ic->ic_channels[1]; 2772 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2773 if ((c->ic_flags & flags) != flags) 2774 continue; 2775 2776 chan->chan = ieee80211_chan2ieee(ic, c); 2777 chan->flags = 0; 2778 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2779 chan->flags |= WPI_CHAN_ACTIVE; 2780 if (ic->ic_des_esslen != 0) 2781 chan->flags |= WPI_CHAN_DIRECT; 2782 } 2783 chan->dsp_gain = 0x6e; 2784 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2785 chan->rf_gain = 0x3b; 2786 chan->active = htole16(10); 2787 chan->passive = htole16(110); 2788 } else { 2789 chan->rf_gain = 0x28; 2790 chan->active = htole16(20); 2791 chan->passive = htole16(120); 2792 } 2793 hdr->nchan++; 2794 chan++; 2795 2796 frm += sizeof (struct wpi_scan_chan); 2797 } 2798 hdr->len = htole16(frm - (uint8_t *)hdr); 2799 pktlen = frm - (uint8_t *)cmd; 2800 2801 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2802 NULL, BUS_DMA_NOWAIT); 2803 if (error) { 2804 aprint_error("%s: could not map scan command\n", 2805 sc->sc_dev.dv_xname); 2806 m_freem(data->m); 2807 data->m = NULL; 2808 return error; 2809 } 2810 2811 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2812 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2813 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2814 2815 /* kick cmd ring */ 2816 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2817 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2818 2819 return 0; /* will be notified async. of failure/success */ 2820 } 2821 2822 static int 2823 wpi_config(struct wpi_softc *sc) 2824 { 2825 struct ieee80211com *ic = &sc->sc_ic; 2826 struct ifnet *ifp = ic->ic_ifp; 2827 struct wpi_power power; 2828 struct wpi_bluetooth bluetooth; 2829 struct wpi_node_info node; 2830 int error; 2831 2832 memset(&power, 0, sizeof power); 2833 power.flags = htole32(WPI_POWER_CAM | 0x8); 2834 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2835 if (error != 0) { 2836 aprint_error("%s: could not set power mode\n", 2837 sc->sc_dev.dv_xname); 2838 return error; 2839 } 2840 2841 /* configure bluetooth coexistence */ 2842 memset(&bluetooth, 0, sizeof bluetooth); 2843 bluetooth.flags = 3; 2844 bluetooth.lead = 0xaa; 2845 bluetooth.kill = 1; 2846 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2847 0); 2848 if (error != 0) { 2849 aprint_error( 2850 "%s: could not configure bluetooth coexistence\n", 2851 sc->sc_dev.dv_xname); 2852 return error; 2853 } 2854 2855 /* configure adapter */ 2856 memset(&sc->config, 0, sizeof (struct wpi_config)); 2857 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 2858 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2859 /*set default channel*/ 2860 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2861 sc->config.flags = htole32(WPI_CONFIG_TSF); 2862 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2863 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2864 WPI_CONFIG_24GHZ); 2865 } 2866 sc->config.filter = 0; 2867 switch (ic->ic_opmode) { 2868 case IEEE80211_M_STA: 2869 sc->config.mode = WPI_MODE_STA; 2870 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2871 break; 2872 case IEEE80211_M_IBSS: 2873 case IEEE80211_M_AHDEMO: 2874 sc->config.mode = WPI_MODE_IBSS; 2875 break; 2876 case IEEE80211_M_HOSTAP: 2877 sc->config.mode = WPI_MODE_HOSTAP; 2878 break; 2879 case IEEE80211_M_MONITOR: 2880 sc->config.mode = WPI_MODE_MONITOR; 2881 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2882 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2883 break; 2884 } 2885 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2886 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2887 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2888 sizeof (struct wpi_config), 0); 2889 if (error != 0) { 2890 aprint_error("%s: configure command failed\n", 2891 sc->sc_dev.dv_xname); 2892 return error; 2893 } 2894 2895 /* configuration has changed, set Tx power accordingly */ 2896 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2897 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2898 return error; 2899 } 2900 2901 /* add broadcast node */ 2902 memset(&node, 0, sizeof node); 2903 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2904 node.id = WPI_ID_BROADCAST; 2905 node.rate = wpi_plcp_signal(2); 2906 node.action = htole32(WPI_ACTION_SET_RATE); 2907 node.antenna = WPI_ANTENNA_BOTH; 2908 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2909 if (error != 0) { 2910 aprint_error("%s: could not add broadcast node\n", 2911 sc->sc_dev.dv_xname); 2912 return error; 2913 } 2914 2915 if ((error = wpi_mrr_setup(sc)) != 0) { 2916 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2917 return error; 2918 } 2919 2920 return 0; 2921 } 2922 2923 static void 2924 wpi_stop_master(struct wpi_softc *sc) 2925 { 2926 uint32_t tmp; 2927 int ntries; 2928 2929 tmp = WPI_READ(sc, WPI_RESET); 2930 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2931 2932 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2933 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2934 return; /* already asleep */ 2935 2936 for (ntries = 0; ntries < 100; ntries++) { 2937 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2938 break; 2939 DELAY(10); 2940 } 2941 if (ntries == 100) { 2942 aprint_error("%s: timeout waiting for master\n", 2943 sc->sc_dev.dv_xname); 2944 } 2945 } 2946 2947 static int 2948 wpi_power_up(struct wpi_softc *sc) 2949 { 2950 uint32_t tmp; 2951 int ntries; 2952 2953 wpi_mem_lock(sc); 2954 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2955 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2956 wpi_mem_unlock(sc); 2957 2958 for (ntries = 0; ntries < 5000; ntries++) { 2959 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2960 break; 2961 DELAY(10); 2962 } 2963 if (ntries == 5000) { 2964 aprint_error("%s: timeout waiting for NIC to power up\n", 2965 sc->sc_dev.dv_xname); 2966 return ETIMEDOUT; 2967 } 2968 return 0; 2969 } 2970 2971 static int 2972 wpi_reset(struct wpi_softc *sc) 2973 { 2974 uint32_t tmp; 2975 int ntries; 2976 2977 /* clear any pending interrupts */ 2978 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2979 2980 tmp = WPI_READ(sc, WPI_PLL_CTL); 2981 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2982 2983 tmp = WPI_READ(sc, WPI_CHICKEN); 2984 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2985 2986 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2987 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2988 2989 /* wait for clock stabilization */ 2990 for (ntries = 0; ntries < 1000; ntries++) { 2991 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2992 break; 2993 DELAY(10); 2994 } 2995 if (ntries == 1000) { 2996 aprint_error("%s: timeout waiting for clock stabilization\n", 2997 sc->sc_dev.dv_xname); 2998 return ETIMEDOUT; 2999 } 3000 3001 /* initialize EEPROM */ 3002 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3003 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3004 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 3005 return EIO; 3006 } 3007 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3008 3009 return 0; 3010 } 3011 3012 static void 3013 wpi_hw_config(struct wpi_softc *sc) 3014 { 3015 uint32_t rev, hw; 3016 3017 /* voodoo from the reference driver */ 3018 hw = WPI_READ(sc, WPI_HWCONFIG); 3019 3020 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3021 rev = PCI_REVISION(rev); 3022 if ((rev & 0xc0) == 0x40) 3023 hw |= WPI_HW_ALM_MB; 3024 else if (!(rev & 0x80)) 3025 hw |= WPI_HW_ALM_MM; 3026 3027 if (sc->cap == 0x80) 3028 hw |= WPI_HW_SKU_MRC; 3029 3030 hw &= ~WPI_HW_REV_D; 3031 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3032 hw |= WPI_HW_REV_D; 3033 3034 if (sc->type > 1) 3035 hw |= WPI_HW_TYPE_B; 3036 3037 DPRINTF(("setting h/w config %x\n", hw)); 3038 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3039 } 3040 3041 static int 3042 wpi_init(struct ifnet *ifp) 3043 { 3044 struct wpi_softc *sc = ifp->if_softc; 3045 struct ieee80211com *ic = &sc->sc_ic; 3046 uint32_t tmp; 3047 int qid, ntries, error; 3048 3049 wpi_stop(ifp,1); 3050 (void)wpi_reset(sc); 3051 3052 wpi_mem_lock(sc); 3053 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3054 DELAY(20); 3055 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3056 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3057 wpi_mem_unlock(sc); 3058 3059 (void)wpi_power_up(sc); 3060 wpi_hw_config(sc); 3061 3062 /* init Rx ring */ 3063 wpi_mem_lock(sc); 3064 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3065 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3066 offsetof(struct wpi_shared, next)); 3067 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3068 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3069 wpi_mem_unlock(sc); 3070 3071 /* init Tx rings */ 3072 wpi_mem_lock(sc); 3073 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3074 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3075 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3076 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3077 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3078 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3079 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3080 3081 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3082 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3083 3084 for (qid = 0; qid < 6; qid++) { 3085 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3086 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3087 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3088 } 3089 wpi_mem_unlock(sc); 3090 3091 /* clear "radio off" and "disable command" bits (reversed logic) */ 3092 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3093 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3094 3095 /* clear any pending interrupts */ 3096 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3097 /* enable interrupts */ 3098 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3099 3100 /* not sure why/if this is necessary... */ 3101 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3102 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3103 3104 if ((error = wpi_load_firmware(sc)) != 0) { 3105 aprint_error("%s: could not load firmware\n", sc->sc_dev.dv_xname); 3106 goto fail1; 3107 } 3108 3109 /* wait for thermal sensors to calibrate */ 3110 for (ntries = 0; ntries < 1000; ntries++) { 3111 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3112 break; 3113 DELAY(10); 3114 } 3115 if (ntries == 1000) { 3116 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 3117 sc->sc_dev.dv_xname); 3118 error = ETIMEDOUT; 3119 goto fail1; 3120 } 3121 3122 DPRINTF(("temperature %d\n", sc->temp)); 3123 3124 if ((error = wpi_config(sc)) != 0) { 3125 aprint_error("%s: could not configure device\n", 3126 sc->sc_dev.dv_xname); 3127 goto fail1; 3128 } 3129 3130 ifp->if_flags &= ~IFF_OACTIVE; 3131 ifp->if_flags |= IFF_RUNNING; 3132 3133 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3134 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3135 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3136 } 3137 else 3138 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3139 3140 return 0; 3141 3142 fail1: wpi_stop(ifp, 1); 3143 return error; 3144 } 3145 3146 3147 static void 3148 wpi_stop(struct ifnet *ifp, int disable) 3149 { 3150 struct wpi_softc *sc = ifp->if_softc; 3151 struct ieee80211com *ic = &sc->sc_ic; 3152 uint32_t tmp; 3153 int ac; 3154 3155 ifp->if_timer = sc->sc_tx_timer = 0; 3156 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3157 3158 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3159 3160 /* disable interrupts */ 3161 WPI_WRITE(sc, WPI_MASK, 0); 3162 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3163 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3164 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3165 3166 wpi_mem_lock(sc); 3167 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3168 wpi_mem_unlock(sc); 3169 3170 /* reset all Tx rings */ 3171 for (ac = 0; ac < 4; ac++) 3172 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3173 wpi_reset_tx_ring(sc, &sc->cmdq); 3174 wpi_reset_tx_ring(sc, &sc->svcq); 3175 3176 /* reset Rx ring */ 3177 wpi_reset_rx_ring(sc, &sc->rxq); 3178 3179 wpi_mem_lock(sc); 3180 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3181 wpi_mem_unlock(sc); 3182 3183 DELAY(5); 3184 3185 wpi_stop_master(sc); 3186 3187 tmp = WPI_READ(sc, WPI_RESET); 3188 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3189 } 3190
Indexes created Thu Oct 02 01:09:59 GMT 2025