if_wpi.c revision 1.17.4.5
1 /* $NetBSD: if_wpi.c,v 1.17.4.5 2007/09/03 16:48:20 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 1.17.4.5 2007/09/03 16:48:20 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_fix_channel(struct ieee80211com *, struct mbuf *); 121 static void wpi_mem_lock(struct wpi_softc *); 122 static void wpi_mem_unlock(struct wpi_softc *); 123 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 124 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 125 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 126 const uint32_t *, int); 127 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 128 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 129 static int wpi_load_firmware(struct wpi_softc *); 130 static void wpi_calib_timeout(void *); 131 static void wpi_iter_func(void *, struct ieee80211_node *); 132 static void wpi_power_calibration(struct wpi_softc *, int); 133 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 134 struct wpi_rx_data *); 135 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 136 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 137 static void wpi_notif_intr(struct wpi_softc *); 138 static int wpi_intr(void *); 139 static void wpi_read_eeprom(struct wpi_softc *); 140 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 141 static void wpi_read_eeprom_group(struct wpi_softc *, int); 142 static uint8_t wpi_plcp_signal(int); 143 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 144 struct ieee80211_node *, int); 145 static void wpi_start(struct ifnet *); 146 static void wpi_watchdog(struct ifnet *); 147 static int wpi_ioctl(struct ifnet *, u_long, void *); 148 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 149 static int wpi_wme_update(struct ieee80211com *); 150 static int wpi_mrr_setup(struct wpi_softc *); 151 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 152 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 153 static int wpi_set_txpower(struct wpi_softc *, 154 struct ieee80211_channel *, int); 155 static int wpi_get_power_index(struct wpi_softc *, 156 struct wpi_power_group *, struct ieee80211_channel *, int); 157 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 158 static int wpi_auth(struct wpi_softc *); 159 static int wpi_scan(struct wpi_softc *, uint16_t); 160 static int wpi_config(struct wpi_softc *); 161 static void wpi_stop_master(struct wpi_softc *); 162 static int wpi_power_up(struct wpi_softc *); 163 static int wpi_reset(struct wpi_softc *); 164 static void wpi_hw_config(struct wpi_softc *); 165 static int wpi_init(struct ifnet *); 166 static void wpi_stop(struct ifnet *, int); 167 168 CFATTACH_DECL(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 169 wpi_detach, NULL); 170 171 static int 172 wpi_match(struct device *parent, struct cfdata *match __unused, void *aux) 173 { 174 struct pci_attach_args *pa = aux; 175 176 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 177 return 0; 178 179 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 180 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 181 return 1; 182 183 return 0; 184 } 185 186 /* Base Address Register */ 187 #define WPI_PCI_BAR0 0x10 188 189 static void 190 wpi_attach(struct device *parent __unused, struct device *self, void *aux) 191 { 192 struct wpi_softc *sc = (struct wpi_softc *)self; 193 struct ieee80211com *ic = &sc->sc_ic; 194 struct ifnet *ifp = &sc->sc_ec.ec_if; 195 struct pci_attach_args *pa = aux; 196 const char *intrstr; 197 char devinfo[256]; 198 bus_space_tag_t memt; 199 bus_space_handle_t memh; 200 pci_intr_handle_t ih; 201 pcireg_t data; 202 int error, ac, revision; 203 204 sc->sc_pct = pa->pa_pc; 205 sc->sc_pcitag = pa->pa_tag; 206 207 callout_init(&sc->calib_to, 0); 208 209 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 210 revision = PCI_REVISION(pa->pa_class); 211 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 212 213 /* clear device specific PCI configuration register 0x41 */ 214 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 215 data &= ~0x0000ff00; 216 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 217 218 /* enable bus-mastering */ 219 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 220 data |= PCI_COMMAND_MASTER_ENABLE; 221 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 222 223 /* map the register window */ 224 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 225 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 226 if (error != 0) { 227 aprint_error("%s: could not map memory space\n", 228 sc->sc_dev.dv_xname); 229 return; 230 } 231 232 sc->sc_st = memt; 233 sc->sc_sh = memh; 234 sc->sc_dmat = pa->pa_dmat; 235 236 if (pci_intr_map(pa, &ih) != 0) { 237 aprint_error("%s: could not map interrupt\n", 238 sc->sc_dev.dv_xname); 239 return; 240 } 241 242 intrstr = pci_intr_string(sc->sc_pct, ih); 243 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 244 if (sc->sc_ih == NULL) { 245 aprint_error("%s: could not establish interrupt", 246 sc->sc_dev.dv_xname); 247 if (intrstr != NULL) 248 aprint_error(" at %s", intrstr); 249 aprint_error("\n"); 250 return; 251 } 252 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 253 254 if (wpi_reset(sc) != 0) { 255 aprint_error("%s: could not reset adapter\n", 256 sc->sc_dev.dv_xname); 257 return; 258 } 259 260 /* 261 * Allocate DMA memory for firmware transfers. 262 */ 263 if ((error = wpi_alloc_fwmem(sc)) != 0) { 264 aprint_error(": could not allocate firmware memory\n"); 265 return; 266 } 267 268 /* 269 * Allocate shared page and Tx/Rx rings. 270 */ 271 if ((error = wpi_alloc_shared(sc)) != 0) { 272 aprint_error("%s: could not allocate shared area\n", 273 sc->sc_dev.dv_xname); 274 goto fail1; 275 } 276 277 if ((error = wpi_alloc_rpool(sc)) != 0) { 278 aprint_error("%s: could not allocate Rx buffers\n", 279 sc->sc_dev.dv_xname); 280 goto fail2; 281 } 282 283 for (ac = 0; ac < 4; ac++) { 284 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 285 if (error != 0) { 286 aprint_error("%s: could not allocate Tx ring %d\n", 287 sc->sc_dev.dv_xname, ac); 288 goto fail3; 289 } 290 } 291 292 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 293 if (error != 0) { 294 aprint_error("%s: could not allocate command ring\n", 295 sc->sc_dev.dv_xname); 296 goto fail3; 297 } 298 299 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 300 aprint_error("%s: could not allocate Rx ring\n", 301 sc->sc_dev.dv_xname); 302 goto fail4; 303 } 304 305 ic->ic_ifp = ifp; 306 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 307 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 308 ic->ic_state = IEEE80211_S_INIT; 309 310 /* set device capabilities */ 311 ic->ic_caps = 312 IEEE80211_C_IBSS | /* IBSS mode support */ 313 IEEE80211_C_WPA | /* 802.11i */ 314 IEEE80211_C_MONITOR | /* monitor mode supported */ 315 IEEE80211_C_TXPMGT | /* tx power management */ 316 IEEE80211_C_SHSLOT | /* short slot time supported */ 317 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 318 IEEE80211_C_WME; /* 802.11e */ 319 320 /* read supported channels and MAC address from EEPROM */ 321 wpi_read_eeprom(sc); 322 323 /* set supported .11a, .11b, .11g rates */ 324 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 325 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 326 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 327 328 ic->ic_ibss_chan = &ic->ic_channels[0]; 329 330 ifp->if_softc = sc; 331 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 332 ifp->if_init = wpi_init; 333 ifp->if_stop = wpi_stop; 334 ifp->if_ioctl = wpi_ioctl; 335 ifp->if_start = wpi_start; 336 ifp->if_watchdog = wpi_watchdog; 337 IFQ_SET_READY(&ifp->if_snd); 338 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 339 340 if_attach(ifp); 341 ieee80211_ifattach(ic); 342 /* override default methods */ 343 ic->ic_node_alloc = wpi_node_alloc; 344 ic->ic_newassoc = wpi_newassoc; 345 ic->ic_wme.wme_update = wpi_wme_update; 346 347 /* override state transition machine */ 348 sc->sc_newstate = ic->ic_newstate; 349 ic->ic_newstate = wpi_newstate; 350 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 351 352 sc->amrr.amrr_min_success_threshold = 1; 353 sc->amrr.amrr_max_success_threshold = 15; 354 355 /* set power handler */ 356 if (pnp_register(self, wpi_power) != PNP_STATUS_SUCCESS) 357 aprint_error("%s: couldn't establish power handler\n", 358 device_xname(self)); 359 360 #if NBPFILTER > 0 361 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 362 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 363 &sc->sc_drvbpf); 364 365 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 366 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 367 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 368 369 sc->sc_txtap_len = sizeof sc->sc_txtapu; 370 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 371 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 372 #endif 373 374 ieee80211_announce(ic); 375 376 return; 377 378 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 379 fail3: while (--ac >= 0) 380 wpi_free_tx_ring(sc, &sc->txq[ac]); 381 wpi_free_rpool(sc); 382 fail2: wpi_free_shared(sc); 383 fail1: wpi_free_fwmem(sc); 384 } 385 386 static int 387 wpi_detach(struct device* self, int flags __unused) 388 { 389 struct wpi_softc *sc = (struct wpi_softc *)self; 390 struct ifnet *ifp = sc->sc_ic.ic_ifp; 391 int ac; 392 393 wpi_stop(ifp, 1); 394 395 #if NBPFILTER > 0 396 if (ifp != NULL) 397 bpfdetach(ifp); 398 #endif 399 ieee80211_ifdetach(&sc->sc_ic); 400 if (ifp != NULL) 401 if_detach(ifp); 402 403 for (ac = 0; ac < 4; ac++) 404 wpi_free_tx_ring(sc, &sc->txq[ac]); 405 wpi_free_tx_ring(sc, &sc->cmdq); 406 wpi_free_rx_ring(sc, &sc->rxq); 407 wpi_free_rpool(sc); 408 wpi_free_shared(sc); 409 410 if (sc->sc_ih != NULL) { 411 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 412 sc->sc_ih = NULL; 413 } 414 415 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 416 417 return 0; 418 } 419 420 static pnp_status_t 421 wpi_power(device_t dv, pnp_request_t req, void *opaque) 422 { 423 struct wpi_softc *sc = (struct wpi_softc *)dv; 424 pnp_capabilities_t *pcaps; 425 pnp_state_t *pstate; 426 struct ifnet *ifp; 427 pcireg_t data; 428 int s; 429 430 switch (req) { 431 case PNP_REQUEST_GET_CAPABILITIES: 432 pcaps = opaque; 433 pcaps->state = PNP_STATE_D0 | PNP_STATE_D3; 434 break; 435 case PNP_REQUEST_GET_STATE: 436 pstate = opaque; 437 *pstate = PNP_STATE_D0; 438 break; 439 case PNP_REQUEST_SET_STATE: 440 pstate = opaque; 441 switch (*pstate) { 442 case PNP_STATE_D0: 443 /* clear device specific PCI conf reg 0x41 */ 444 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 445 data &= ~0x0000ff00; 446 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 447 448 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0xe8, 449 sc->sc_pmstate_e8); 450 451 s = splnet(); 452 ifp = sc->sc_ic.ic_ifp; 453 if (ifp->if_flags & IFF_UP) { 454 ifp->if_init(ifp); 455 if (ifp->if_flags & IFF_RUNNING) 456 ifp->if_start(ifp); 457 } 458 splx(s); 459 break; 460 case PNP_STATE_D3: 461 sc->sc_pmstate_e8 = pci_conf_read( 462 sc->sc_pct, sc->sc_pcitag, 0xe8); 463 break; 464 default: 465 return PNP_STATUS_UNSUPPORTED; 466 } 467 break; 468 default: 469 return PNP_STATUS_UNSUPPORTED; 470 } 471 472 return PNP_STATUS_SUCCESS; 473 } 474 475 static int 476 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 477 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 478 { 479 int nsegs, error; 480 481 dma->tag = tag; 482 dma->size = size; 483 484 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 485 if (error != 0) 486 goto fail; 487 488 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 489 flags); 490 if (error != 0) 491 goto fail; 492 493 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 494 if (error != 0) 495 goto fail; 496 497 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 498 if (error != 0) 499 goto fail; 500 501 memset(dma->vaddr, 0, size); 502 503 dma->paddr = dma->map->dm_segs[0].ds_addr; 504 if (kvap != NULL) 505 *kvap = dma->vaddr; 506 507 return 0; 508 509 fail: wpi_dma_contig_free(dma); 510 return error; 511 } 512 513 static void 514 wpi_dma_contig_free(struct wpi_dma_info *dma) 515 { 516 if (dma->map != NULL) { 517 if (dma->vaddr != NULL) { 518 bus_dmamap_unload(dma->tag, dma->map); 519 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 520 bus_dmamem_free(dma->tag, &dma->seg, 1); 521 dma->vaddr = NULL; 522 } 523 bus_dmamap_destroy(dma->tag, dma->map); 524 dma->map = NULL; 525 } 526 } 527 528 /* 529 * Allocate a shared page between host and NIC. 530 */ 531 static int 532 wpi_alloc_shared(struct wpi_softc *sc) 533 { 534 int error; 535 /* must be aligned on a 4K-page boundary */ 536 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 537 (void **)&sc->shared, sizeof (struct wpi_shared), 538 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 539 if (error != 0) 540 aprint_error( 541 "%s: could not allocate shared area DMA memory\n", 542 sc->sc_dev.dv_xname); 543 544 return error; 545 } 546 547 static void 548 wpi_free_shared(struct wpi_softc *sc) 549 { 550 wpi_dma_contig_free(&sc->shared_dma); 551 } 552 553 /* 554 * Allocate DMA-safe memory for firmware transfer. 555 */ 556 static int 557 wpi_alloc_fwmem(struct wpi_softc *sc) 558 { 559 int error; 560 /* allocate enough contiguous space to store text and data */ 561 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 562 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 563 BUS_DMA_NOWAIT); 564 565 if (error != 0) 566 aprint_error( 567 "%s: could not allocate firmware transfer area" 568 "DMA memory\n", sc->sc_dev.dv_xname); 569 return error; 570 } 571 572 static void 573 wpi_free_fwmem(struct wpi_softc *sc) 574 { 575 wpi_dma_contig_free(&sc->fw_dma); 576 } 577 578 579 static struct wpi_rbuf * 580 wpi_alloc_rbuf(struct wpi_softc *sc) 581 { 582 struct wpi_rbuf *rbuf; 583 584 rbuf = SLIST_FIRST(&sc->rxq.freelist); 585 if (rbuf == NULL) 586 return NULL; 587 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 588 sc->rxq.nb_free_entries --; 589 590 return rbuf; 591 } 592 593 /* 594 * This is called automatically by the network stack when the mbuf to which our 595 * Rx buffer is attached is freed. 596 */ 597 static void 598 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 599 { 600 struct wpi_rbuf *rbuf = arg; 601 struct wpi_softc *sc = rbuf->sc; 602 int s; 603 604 /* put the buffer back in the free list */ 605 606 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 607 sc->rxq.nb_free_entries ++; 608 609 if (__predict_true(m != NULL)) { 610 s = splvm(); 611 pool_cache_put(&mbpool_cache, m); 612 splx(s); 613 } 614 } 615 616 static int 617 wpi_alloc_rpool(struct wpi_softc *sc) 618 { 619 struct wpi_rx_ring *ring = &sc->rxq; 620 struct wpi_rbuf *rbuf; 621 int i, error; 622 623 /* allocate a big chunk of DMA'able memory.. */ 624 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 625 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 626 if (error != 0) { 627 aprint_normal("%s: could not allocate Rx buffers DMA memory\n", 628 sc->sc_dev.dv_xname); 629 return error; 630 } 631 632 /* ..and split it into 3KB chunks */ 633 SLIST_INIT(&ring->freelist); 634 for (i = 0; i < WPI_RBUF_COUNT; i++) { 635 rbuf = &ring->rbuf[i]; 636 rbuf->sc = sc; /* backpointer for callbacks */ 637 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 638 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 639 640 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 641 } 642 643 ring->nb_free_entries = WPI_RBUF_COUNT; 644 return 0; 645 } 646 647 static void 648 wpi_free_rpool(struct wpi_softc *sc) 649 { 650 wpi_dma_contig_free(&sc->rxq.buf_dma); 651 } 652 653 static int 654 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 655 { 656 struct wpi_rx_data *data; 657 struct wpi_rbuf *rbuf; 658 int i, error; 659 660 ring->cur = 0; 661 662 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 663 (void **)&ring->desc, 664 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 665 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 666 if (error != 0) { 667 aprint_error("%s: could not allocate rx ring DMA memory\n", 668 sc->sc_dev.dv_xname); 669 goto fail; 670 } 671 672 /* 673 * Setup Rx buffers. 674 */ 675 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 676 data = &ring->data[i]; 677 678 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 679 if (data->m == NULL) { 680 aprint_error("%s: could not allocate rx mbuf\n", 681 sc->sc_dev.dv_xname); 682 error = ENOMEM; 683 goto fail; 684 } 685 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 686 m_freem(data->m); 687 data->m = NULL; 688 aprint_error("%s: could not allocate rx cluster\n", 689 sc->sc_dev.dv_xname); 690 error = ENOMEM; 691 goto fail; 692 } 693 /* attach Rx buffer to mbuf */ 694 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 695 rbuf); 696 data->m->m_flags |= M_EXT_RW; 697 698 ring->desc[i] = htole32(rbuf->paddr); 699 } 700 701 return 0; 702 703 fail: wpi_free_rx_ring(sc, ring); 704 return error; 705 } 706 707 static void 708 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 709 { 710 int ntries; 711 712 wpi_mem_lock(sc); 713 714 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 715 for (ntries = 0; ntries < 100; ntries++) { 716 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 717 break; 718 DELAY(10); 719 } 720 #ifdef WPI_DEBUG 721 if (ntries == 100 && wpi_debug > 0) 722 aprint_error("%s: timeout resetting Rx ring\n", 723 sc->sc_dev.dv_xname); 724 #endif 725 wpi_mem_unlock(sc); 726 727 ring->cur = 0; 728 } 729 730 static void 731 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 732 { 733 int i; 734 735 wpi_dma_contig_free(&ring->desc_dma); 736 737 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 738 if (ring->data[i].m != NULL) 739 m_freem(ring->data[i].m); 740 } 741 } 742 743 static int 744 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 745 int qid) 746 { 747 struct wpi_tx_data *data; 748 int i, error; 749 750 ring->qid = qid; 751 ring->count = count; 752 ring->queued = 0; 753 ring->cur = 0; 754 755 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 756 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 757 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 758 if (error != 0) { 759 aprint_error("%s: could not allocate tx ring DMA memory\n", 760 sc->sc_dev.dv_xname); 761 goto fail; 762 } 763 764 /* update shared page with ring's base address */ 765 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 766 767 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 768 (void **)&ring->cmd, 769 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 770 if (error != 0) { 771 aprint_error("%s: could not allocate tx cmd DMA memory\n", 772 sc->sc_dev.dv_xname); 773 goto fail; 774 } 775 776 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 777 M_NOWAIT); 778 if (ring->data == NULL) { 779 aprint_error("%s: could not allocate tx data slots\n", 780 sc->sc_dev.dv_xname); 781 goto fail; 782 } 783 784 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 785 786 for (i = 0; i < count; i++) { 787 data = &ring->data[i]; 788 789 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 790 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 791 &data->map); 792 if (error != 0) { 793 aprint_error("%s: could not create tx buf DMA map\n", 794 sc->sc_dev.dv_xname); 795 goto fail; 796 } 797 } 798 799 return 0; 800 801 fail: wpi_free_tx_ring(sc, ring); 802 return error; 803 } 804 805 static void 806 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 807 { 808 struct wpi_tx_data *data; 809 int i, ntries; 810 811 wpi_mem_lock(sc); 812 813 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 814 for (ntries = 0; ntries < 100; ntries++) { 815 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 816 break; 817 DELAY(10); 818 } 819 #ifdef WPI_DEBUG 820 if (ntries == 100 && wpi_debug > 0) { 821 aprint_error("%s: timeout resetting Tx ring %d\n", 822 sc->sc_dev.dv_xname, ring->qid); 823 } 824 #endif 825 wpi_mem_unlock(sc); 826 827 for (i = 0; i < ring->count; i++) { 828 data = &ring->data[i]; 829 830 if (data->m != NULL) { 831 bus_dmamap_unload(sc->sc_dmat, data->map); 832 m_freem(data->m); 833 data->m = NULL; 834 } 835 } 836 837 ring->queued = 0; 838 ring->cur = 0; 839 } 840 841 static void 842 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 843 { 844 struct wpi_tx_data *data; 845 int i; 846 847 wpi_dma_contig_free(&ring->desc_dma); 848 wpi_dma_contig_free(&ring->cmd_dma); 849 850 if (ring->data != NULL) { 851 for (i = 0; i < ring->count; i++) { 852 data = &ring->data[i]; 853 854 if (data->m != NULL) { 855 bus_dmamap_unload(sc->sc_dmat, data->map); 856 m_freem(data->m); 857 } 858 } 859 free(ring->data, M_DEVBUF); 860 } 861 } 862 863 /*ARGUSED*/ 864 static struct ieee80211_node * 865 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 866 { 867 struct wpi_node *wn; 868 869 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 870 871 if (wn != NULL) 872 memset(wn, 0, sizeof (struct wpi_node)); 873 return (struct ieee80211_node *)wn; 874 } 875 876 static void 877 wpi_newassoc(struct ieee80211_node *ni, int isnew) 878 { 879 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 880 int i; 881 882 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 883 884 /* set rate to some reasonable initial value */ 885 for (i = ni->ni_rates.rs_nrates - 1; 886 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 887 i--); 888 ni->ni_txrate = i; 889 } 890 891 static int 892 wpi_media_change(struct ifnet *ifp) 893 { 894 int error; 895 896 error = ieee80211_media_change(ifp); 897 if (error != ENETRESET) 898 return error; 899 900 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 901 wpi_init(ifp); 902 903 return 0; 904 } 905 906 static int 907 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 908 { 909 struct ifnet *ifp = ic->ic_ifp; 910 struct wpi_softc *sc = ifp->if_softc; 911 struct ieee80211_node *ni; 912 int error; 913 914 callout_stop(&sc->calib_to); 915 916 switch (nstate) { 917 case IEEE80211_S_SCAN: 918 919 if (sc->is_scanning) 920 break; 921 922 sc->is_scanning = true; 923 ieee80211_node_table_reset(&ic->ic_scan); 924 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 925 926 /* make the link LED blink while we're scanning */ 927 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 928 929 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 930 aprint_error("%s: could not initiate scan\n", 931 sc->sc_dev.dv_xname); 932 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 933 return error; 934 } 935 936 ic->ic_state = nstate; 937 return 0; 938 939 case IEEE80211_S_ASSOC: 940 if (ic->ic_state != IEEE80211_S_RUN) 941 break; 942 /* FALLTHROUGH */ 943 case IEEE80211_S_AUTH: 944 sc->config.associd = 0; 945 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 946 if ((error = wpi_auth(sc)) != 0) { 947 aprint_error("%s: could not send authentication request\n", 948 sc->sc_dev.dv_xname); 949 return error; 950 } 951 break; 952 953 case IEEE80211_S_RUN: 954 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 955 /* link LED blinks while monitoring */ 956 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 957 break; 958 } 959 960 ni = ic->ic_bss; 961 962 if (ic->ic_opmode != IEEE80211_M_STA) { 963 (void) wpi_auth(sc); /* XXX */ 964 wpi_setup_beacon(sc, ni); 965 } 966 967 wpi_enable_tsf(sc, ni); 968 969 /* update adapter's configuration */ 970 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 971 /* short preamble/slot time are negotiated when associating */ 972 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 973 WPI_CONFIG_SHSLOT); 974 if (ic->ic_flags & IEEE80211_F_SHSLOT) 975 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 976 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 977 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 978 sc->config.filter |= htole32(WPI_FILTER_BSS); 979 if (ic->ic_opmode != IEEE80211_M_STA) 980 sc->config.filter |= htole32(WPI_FILTER_BEACON); 981 982 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 983 984 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 985 sc->config.flags)); 986 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 987 sizeof (struct wpi_config), 1); 988 if (error != 0) { 989 aprint_error("%s: could not update configuration\n", 990 sc->sc_dev.dv_xname); 991 return error; 992 } 993 994 /* configuration has changed, set Tx power accordingly */ 995 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 996 aprint_error("%s: could not set Tx power\n", 997 sc->sc_dev.dv_xname); 998 return error; 999 } 1000 1001 if (ic->ic_opmode == IEEE80211_M_STA) { 1002 /* fake a join to init the tx rate */ 1003 wpi_newassoc(ni, 1); 1004 } 1005 1006 /* start periodic calibration timer */ 1007 sc->calib_cnt = 0; 1008 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 1009 1010 /* link LED always on while associated */ 1011 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 1012 break; 1013 1014 case IEEE80211_S_INIT: 1015 sc->is_scanning = false; 1016 break; 1017 } 1018 1019 return sc->sc_newstate(ic, nstate, arg); 1020 } 1021 1022 /* 1023 * XXX: Hack to set the current channel to the value advertised in beacons or 1024 * probe responses. Only used during AP detection. 1025 * XXX: Duplicated from if_iwi.c 1026 */ 1027 static void 1028 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 1029 { 1030 struct ieee80211_frame *wh; 1031 uint8_t subtype; 1032 uint8_t *frm, *efrm; 1033 1034 wh = mtod(m, struct ieee80211_frame *); 1035 1036 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1037 return; 1038 1039 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1040 1041 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1042 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1043 return; 1044 1045 frm = (uint8_t *)(wh + 1); 1046 efrm = mtod(m, uint8_t *) + m->m_len; 1047 1048 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1049 while (frm < efrm) { 1050 if (*frm == IEEE80211_ELEMID_DSPARMS) 1051 #if IEEE80211_CHAN_MAX < 255 1052 if (frm[2] <= IEEE80211_CHAN_MAX) 1053 #endif 1054 ic->ic_curchan = &ic->ic_channels[frm[2]]; 1055 1056 frm += frm[1] + 2; 1057 } 1058 } 1059 1060 /* 1061 * Grab exclusive access to NIC memory. 1062 */ 1063 static void 1064 wpi_mem_lock(struct wpi_softc *sc) 1065 { 1066 uint32_t tmp; 1067 int ntries; 1068 1069 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1070 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1071 1072 /* spin until we actually get the lock */ 1073 for (ntries = 0; ntries < 1000; ntries++) { 1074 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1075 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1076 break; 1077 DELAY(10); 1078 } 1079 if (ntries == 1000) 1080 aprint_error("%s: could not lock memory\n", sc->sc_dev.dv_xname); 1081 } 1082 1083 /* 1084 * Release lock on NIC memory. 1085 */ 1086 static void 1087 wpi_mem_unlock(struct wpi_softc *sc) 1088 { 1089 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1090 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1091 } 1092 1093 static uint32_t 1094 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1095 { 1096 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1097 return WPI_READ(sc, WPI_READ_MEM_DATA); 1098 } 1099 1100 static void 1101 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1102 { 1103 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1104 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1105 } 1106 1107 static void 1108 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1109 const uint32_t *data, int wlen) 1110 { 1111 for (; wlen > 0; wlen--, data++, addr += 4) 1112 wpi_mem_write(sc, addr, *data); 1113 } 1114 1115 1116 /* 1117 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1118 * instead of using the traditional bit-bang method. 1119 */ 1120 static int 1121 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1122 { 1123 uint8_t *out = data; 1124 uint32_t val; 1125 int ntries; 1126 1127 wpi_mem_lock(sc); 1128 for (; len > 0; len -= 2, addr++) { 1129 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1130 1131 for (ntries = 0; ntries < 10; ntries++) { 1132 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1133 WPI_EEPROM_READY) 1134 break; 1135 DELAY(5); 1136 } 1137 if (ntries == 10) { 1138 aprint_error("%s: could not read EEPROM\n", 1139 sc->sc_dev.dv_xname); 1140 return ETIMEDOUT; 1141 } 1142 *out++ = val >> 16; 1143 if (len > 1) 1144 *out++ = val >> 24; 1145 } 1146 wpi_mem_unlock(sc); 1147 1148 return 0; 1149 } 1150 1151 /* 1152 * The firmware boot code is small and is intended to be copied directly into 1153 * the NIC internal memory. 1154 */ 1155 int 1156 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1157 { 1158 int ntries; 1159 1160 size /= sizeof (uint32_t); 1161 1162 wpi_mem_lock(sc); 1163 1164 /* copy microcode image into NIC memory */ 1165 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1166 (const uint32_t *)ucode, size); 1167 1168 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1169 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1170 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1171 1172 /* run microcode */ 1173 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1174 1175 /* wait for transfer to complete */ 1176 for (ntries = 0; ntries < 1000; ntries++) { 1177 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1178 break; 1179 DELAY(10); 1180 } 1181 if (ntries == 1000) { 1182 wpi_mem_unlock(sc); 1183 printf("%s: could not load boot firmware\n", 1184 sc->sc_dev.dv_xname); 1185 return ETIMEDOUT; 1186 } 1187 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1188 1189 wpi_mem_unlock(sc); 1190 1191 return 0; 1192 } 1193 1194 static int 1195 wpi_load_firmware(struct wpi_softc *sc) 1196 { 1197 struct wpi_dma_info *dma = &sc->fw_dma; 1198 struct wpi_firmware_hdr hdr; 1199 const uint8_t *init_text, *init_data, *main_text, *main_data; 1200 const uint8_t *boot_text; 1201 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1202 uint32_t boot_textsz; 1203 firmware_handle_t fw; 1204 u_char *dfw; 1205 size_t size; 1206 int error; 1207 1208 /* load firmware image from disk */ 1209 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1210 aprint_error("%s: could not read firmware file\n", 1211 sc->sc_dev.dv_xname); 1212 goto fail1; 1213 } 1214 1215 size = firmware_get_size(fw); 1216 1217 /* extract firmware header information */ 1218 if (size < sizeof (struct wpi_firmware_hdr)) { 1219 aprint_error("%s: truncated firmware header: %zu bytes\n", 1220 sc->sc_dev.dv_xname, size); 1221 error = EINVAL; 1222 goto fail2; 1223 } 1224 1225 if ((error = firmware_read(fw, 0, &hdr, 1226 sizeof (struct wpi_firmware_hdr))) != 0) { 1227 aprint_error("%s: can't get firmware header\n", 1228 sc->sc_dev.dv_xname); 1229 goto fail2; 1230 } 1231 1232 main_textsz = le32toh(hdr.main_textsz); 1233 main_datasz = le32toh(hdr.main_datasz); 1234 init_textsz = le32toh(hdr.init_textsz); 1235 init_datasz = le32toh(hdr.init_datasz); 1236 boot_textsz = le32toh(hdr.boot_textsz); 1237 1238 /* sanity-check firmware segments sizes */ 1239 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1240 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1241 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1242 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1243 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1244 (boot_textsz & 3) != 0) { 1245 printf("%s: invalid firmware header\n", sc->sc_dev.dv_xname); 1246 error = EINVAL; 1247 goto fail2; 1248 } 1249 1250 /* check that all firmware segments are present */ 1251 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1252 main_datasz + init_textsz + init_datasz + boot_textsz) { 1253 aprint_error("%s: firmware file too short: %zu bytes\n", 1254 sc->sc_dev.dv_xname, size); 1255 error = EINVAL; 1256 goto fail2; 1257 } 1258 1259 dfw = firmware_malloc(size); 1260 if (dfw == NULL) { 1261 aprint_error("%s: not enough memory to stock firmware\n", 1262 sc->sc_dev.dv_xname); 1263 error = ENOMEM; 1264 goto fail2; 1265 } 1266 1267 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1268 aprint_error("%s: can't get firmware\n", 1269 sc->sc_dev.dv_xname); 1270 goto fail2; 1271 } 1272 1273 /* get pointers to firmware segments */ 1274 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1275 main_data = main_text + main_textsz; 1276 init_text = main_data + main_datasz; 1277 init_data = init_text + init_textsz; 1278 boot_text = init_data + init_datasz; 1279 1280 /* copy initialization images into pre-allocated DMA-safe memory */ 1281 memcpy(dma->vaddr, init_data, init_datasz); 1282 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1283 1284 /* tell adapter where to find initialization images */ 1285 wpi_mem_lock(sc); 1286 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1287 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1288 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1289 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1290 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1291 wpi_mem_unlock(sc); 1292 1293 /* load firmware boot code */ 1294 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1295 printf("%s: could not load boot firmware\n", 1296 sc->sc_dev.dv_xname); 1297 goto fail3; 1298 } 1299 1300 /* now press "execute" ;-) */ 1301 WPI_WRITE(sc, WPI_RESET, 0); 1302 1303 /* ..and wait at most one second for adapter to initialize */ 1304 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1305 /* this isn't what was supposed to happen.. */ 1306 aprint_error("%s: timeout waiting for adapter to initialize\n", 1307 sc->sc_dev.dv_xname); 1308 } 1309 1310 /* copy runtime images into pre-allocated DMA-safe memory */ 1311 memcpy(dma->vaddr, main_data, main_datasz); 1312 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1313 1314 /* tell adapter where to find runtime images */ 1315 wpi_mem_lock(sc); 1316 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1317 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1318 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1319 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1320 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1321 wpi_mem_unlock(sc); 1322 1323 /* wait at most one second for second alive notification */ 1324 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1325 /* this isn't what was supposed to happen.. */ 1326 printf("%s: timeout waiting for adapter to initialize\n", 1327 sc->sc_dev.dv_xname); 1328 } 1329 1330 1331 fail3: firmware_free(dfw,size); 1332 fail2: firmware_close(fw); 1333 fail1: return error; 1334 } 1335 1336 static void 1337 wpi_calib_timeout(void *arg) 1338 { 1339 struct wpi_softc *sc = arg; 1340 struct ieee80211com *ic = &sc->sc_ic; 1341 int temp, s; 1342 1343 /* automatic rate control triggered every 500ms */ 1344 if (ic->ic_fixed_rate == -1) { 1345 s = splnet(); 1346 if (ic->ic_opmode == IEEE80211_M_STA) 1347 wpi_iter_func(sc, ic->ic_bss); 1348 else 1349 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1350 splx(s); 1351 } 1352 1353 /* update sensor data */ 1354 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1355 1356 /* automatic power calibration every 60s */ 1357 if (++sc->calib_cnt >= 120) { 1358 wpi_power_calibration(sc, temp); 1359 sc->calib_cnt = 0; 1360 } 1361 1362 callout_reset(&sc->calib_to, hz/2, wpi_calib_timeout, sc); 1363 } 1364 1365 static void 1366 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1367 { 1368 struct wpi_softc *sc = arg; 1369 struct wpi_node *wn = (struct wpi_node *)ni; 1370 1371 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1372 } 1373 1374 /* 1375 * This function is called periodically (every 60 seconds) to adjust output 1376 * power to temperature changes. 1377 */ 1378 void 1379 wpi_power_calibration(struct wpi_softc *sc, int temp) 1380 { 1381 /* sanity-check read value */ 1382 if (temp < -260 || temp > 25) { 1383 /* this can't be correct, ignore */ 1384 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1385 return; 1386 } 1387 1388 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1389 1390 /* adjust Tx power if need be */ 1391 if (abs(temp - sc->temp) <= 6) 1392 return; 1393 1394 sc->temp = temp; 1395 1396 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1397 /* just warn, too bad for the automatic calibration... */ 1398 aprint_error("%s: could not adjust Tx power\n", 1399 sc->sc_dev.dv_xname); 1400 } 1401 } 1402 1403 static void 1404 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1405 struct wpi_rx_data *data) 1406 { 1407 struct ieee80211com *ic = &sc->sc_ic; 1408 struct ifnet *ifp = ic->ic_ifp; 1409 struct wpi_rx_ring *ring = &sc->rxq; 1410 struct wpi_rx_stat *stat; 1411 struct wpi_rx_head *head; 1412 struct wpi_rx_tail *tail; 1413 struct wpi_rbuf *rbuf; 1414 struct ieee80211_frame *wh; 1415 struct ieee80211_node *ni; 1416 struct mbuf *m, *mnew; 1417 int data_off ; 1418 1419 stat = (struct wpi_rx_stat *)(desc + 1); 1420 1421 if (stat->len > WPI_STAT_MAXLEN) { 1422 aprint_error("%s: invalid rx statistic header\n", 1423 sc->sc_dev.dv_xname); 1424 ifp->if_ierrors++; 1425 return; 1426 } 1427 1428 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1429 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1430 1431 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1432 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1433 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1434 le64toh(tail->tstamp))); 1435 1436 /* 1437 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1438 * to radiotap in monitor mode). 1439 */ 1440 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1441 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1442 ifp->if_ierrors++; 1443 return; 1444 } 1445 1446 /* Compute where are the useful datas */ 1447 data_off = (char*)(head + 1) - mtod(data->m, char*); 1448 1449 /* 1450 * If the number of free entry is too low 1451 * just dup the data->m socket and reuse the same rbuf entry 1452 */ 1453 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1454 1455 /* Prepare the mbuf for the m_dup */ 1456 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1457 data->m->m_data = (char*) data->m->m_data + data_off; 1458 1459 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1460 1461 /* Restore the m_data pointer for future use */ 1462 data->m->m_data = (char*) data->m->m_data - data_off; 1463 1464 if (m == NULL) { 1465 ifp->if_ierrors++; 1466 return; 1467 } 1468 } else { 1469 1470 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1471 if (mnew == NULL) { 1472 ifp->if_ierrors++; 1473 return; 1474 } 1475 1476 rbuf = wpi_alloc_rbuf(sc); 1477 KASSERT(rbuf != NULL); 1478 1479 /* attach Rx buffer to mbuf */ 1480 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1481 rbuf); 1482 mnew->m_flags |= M_EXT_RW; 1483 1484 m = data->m; 1485 data->m = mnew; 1486 1487 /* update Rx descriptor */ 1488 ring->desc[ring->cur] = htole32(rbuf->paddr); 1489 1490 m->m_data = (char*)m->m_data + data_off; 1491 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1492 } 1493 1494 /* finalize mbuf */ 1495 m->m_pkthdr.rcvif = ifp; 1496 1497 if (ic->ic_state == IEEE80211_S_SCAN) 1498 wpi_fix_channel(ic, m); 1499 1500 #if NBPFILTER > 0 1501 if (sc->sc_drvbpf != NULL) { 1502 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1503 1504 tap->wr_flags = 0; 1505 tap->wr_chan_freq = 1506 htole16(ic->ic_channels[head->chan].ic_freq); 1507 tap->wr_chan_flags = 1508 htole16(ic->ic_channels[head->chan].ic_flags); 1509 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1510 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1511 tap->wr_tsft = tail->tstamp; 1512 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1513 switch (head->rate) { 1514 /* CCK rates */ 1515 case 10: tap->wr_rate = 2; break; 1516 case 20: tap->wr_rate = 4; break; 1517 case 55: tap->wr_rate = 11; break; 1518 case 110: tap->wr_rate = 22; break; 1519 /* OFDM rates */ 1520 case 0xd: tap->wr_rate = 12; break; 1521 case 0xf: tap->wr_rate = 18; break; 1522 case 0x5: tap->wr_rate = 24; break; 1523 case 0x7: tap->wr_rate = 36; break; 1524 case 0x9: tap->wr_rate = 48; break; 1525 case 0xb: tap->wr_rate = 72; break; 1526 case 0x1: tap->wr_rate = 96; break; 1527 case 0x3: tap->wr_rate = 108; break; 1528 /* unknown rate: should not happen */ 1529 default: tap->wr_rate = 0; 1530 } 1531 if (le16toh(head->flags) & 0x4) 1532 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1533 1534 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1535 } 1536 #endif 1537 1538 /* grab a reference to the source node */ 1539 wh = mtod(m, struct ieee80211_frame *); 1540 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1541 1542 /* send the frame to the 802.11 layer */ 1543 ieee80211_input(ic, m, ni, stat->rssi, 0); 1544 1545 /* release node reference */ 1546 ieee80211_free_node(ni); 1547 } 1548 1549 static void 1550 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1551 { 1552 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1553 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1554 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1555 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1556 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1557 1558 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1559 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1560 stat->nkill, stat->rate, le32toh(stat->duration), 1561 le32toh(stat->status))); 1562 1563 /* 1564 * Update rate control statistics for the node. 1565 * XXX we should not count mgmt frames since they're always sent at 1566 * the lowest available bit-rate. 1567 */ 1568 wn->amn.amn_txcnt++; 1569 if (stat->ntries > 0) { 1570 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1571 wn->amn.amn_retrycnt++; 1572 } 1573 1574 if ((le32toh(stat->status) & 0xff) != 1) 1575 ifp->if_oerrors++; 1576 else 1577 ifp->if_opackets++; 1578 1579 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1580 m_freem(txdata->m); 1581 txdata->m = NULL; 1582 ieee80211_free_node(txdata->ni); 1583 txdata->ni = NULL; 1584 1585 ring->queued--; 1586 1587 sc->sc_tx_timer = 0; 1588 ifp->if_flags &= ~IFF_OACTIVE; 1589 wpi_start(ifp); 1590 } 1591 1592 static void 1593 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1594 { 1595 struct wpi_tx_ring *ring = &sc->cmdq; 1596 struct wpi_tx_data *data; 1597 1598 if ((desc->qid & 7) != 4) 1599 return; /* not a command ack */ 1600 1601 data = &ring->data[desc->idx]; 1602 1603 /* if the command was mapped in a mbuf, free it */ 1604 if (data->m != NULL) { 1605 bus_dmamap_unload(sc->sc_dmat, data->map); 1606 m_freem(data->m); 1607 data->m = NULL; 1608 } 1609 1610 wakeup(&ring->cmd[desc->idx]); 1611 } 1612 1613 static void 1614 wpi_notif_intr(struct wpi_softc *sc) 1615 { 1616 struct ieee80211com *ic = &sc->sc_ic; 1617 struct ifnet *ifp = ic->ic_ifp; 1618 struct wpi_rx_desc *desc; 1619 struct wpi_rx_data *data; 1620 uint32_t hw; 1621 1622 hw = le32toh(sc->shared->next); 1623 while (sc->rxq.cur != hw) { 1624 data = &sc->rxq.data[sc->rxq.cur]; 1625 1626 desc = mtod(data->m, struct wpi_rx_desc *); 1627 1628 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1629 "len=%d\n", desc->qid, desc->idx, desc->flags, 1630 desc->type, le32toh(desc->len))); 1631 1632 if (!(desc->qid & 0x80)) /* reply to a command */ 1633 wpi_cmd_intr(sc, desc); 1634 1635 switch (desc->type) { 1636 case WPI_RX_DONE: 1637 /* a 802.11 frame was received */ 1638 wpi_rx_intr(sc, desc, data); 1639 break; 1640 1641 case WPI_TX_DONE: 1642 /* a 802.11 frame has been transmitted */ 1643 wpi_tx_intr(sc, desc); 1644 break; 1645 1646 case WPI_UC_READY: 1647 { 1648 struct wpi_ucode_info *uc = 1649 (struct wpi_ucode_info *)(desc + 1); 1650 1651 /* the microcontroller is ready */ 1652 DPRINTF(("microcode alive notification version %x " 1653 "alive %x\n", le32toh(uc->version), 1654 le32toh(uc->valid))); 1655 1656 if (le32toh(uc->valid) != 1) { 1657 aprint_error("%s: microcontroller " 1658 "initialization failed\n", 1659 sc->sc_dev.dv_xname); 1660 } 1661 break; 1662 } 1663 case WPI_STATE_CHANGED: 1664 { 1665 uint32_t *status = (uint32_t *)(desc + 1); 1666 1667 /* enabled/disabled notification */ 1668 DPRINTF(("state changed to %x\n", le32toh(*status))); 1669 1670 if (le32toh(*status) & 1) { 1671 /* the radio button has to be pushed */ 1672 aprint_error("%s: Radio transmitter is off\n", 1673 sc->sc_dev.dv_xname); 1674 /* turn the interface down */ 1675 ifp->if_flags &= ~IFF_UP; 1676 wpi_stop(ifp, 1); 1677 return; /* no further processing */ 1678 } 1679 break; 1680 } 1681 case WPI_START_SCAN: 1682 { 1683 struct wpi_start_scan *scan = 1684 (struct wpi_start_scan *)(desc + 1); 1685 1686 DPRINTFN(2, ("scanning channel %d status %x\n", 1687 scan->chan, le32toh(scan->status))); 1688 1689 /* fix current channel */ 1690 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1691 break; 1692 } 1693 case WPI_STOP_SCAN: 1694 { 1695 struct wpi_stop_scan *scan = 1696 (struct wpi_stop_scan *)(desc + 1); 1697 1698 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1699 scan->nchan, scan->status, scan->chan)); 1700 1701 if (scan->status == 1 && scan->chan <= 14) { 1702 /* 1703 * We just finished scanning 802.11g channels, 1704 * start scanning 802.11a ones. 1705 */ 1706 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1707 break; 1708 } 1709 sc->is_scanning = false; 1710 ieee80211_end_scan(ic); 1711 break; 1712 } 1713 } 1714 1715 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1716 } 1717 1718 /* tell the firmware what we have processed */ 1719 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1720 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1721 } 1722 1723 static int 1724 wpi_intr(void *arg) 1725 { 1726 struct wpi_softc *sc = arg; 1727 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1728 uint32_t r; 1729 1730 r = WPI_READ(sc, WPI_INTR); 1731 if (r == 0 || r == 0xffffffff) 1732 return 0; /* not for us */ 1733 1734 DPRINTFN(5, ("interrupt reg %x\n", r)); 1735 1736 /* disable interrupts */ 1737 WPI_WRITE(sc, WPI_MASK, 0); 1738 /* ack interrupts */ 1739 WPI_WRITE(sc, WPI_INTR, r); 1740 1741 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1742 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1743 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1744 wpi_stop(sc->sc_ic.ic_ifp, 1); 1745 return 1; 1746 } 1747 1748 if (r & WPI_RX_INTR) 1749 wpi_notif_intr(sc); 1750 1751 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1752 wakeup(sc); 1753 1754 /* re-enable interrupts */ 1755 if (ifp->if_flags & IFF_UP) 1756 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1757 1758 return 1; 1759 } 1760 1761 static uint8_t 1762 wpi_plcp_signal(int rate) 1763 { 1764 switch (rate) { 1765 /* CCK rates (returned values are device-dependent) */ 1766 case 2: return 10; 1767 case 4: return 20; 1768 case 11: return 55; 1769 case 22: return 110; 1770 1771 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1772 /* R1-R4, (u)ral is R4-R1 */ 1773 case 12: return 0xd; 1774 case 18: return 0xf; 1775 case 24: return 0x5; 1776 case 36: return 0x7; 1777 case 48: return 0x9; 1778 case 72: return 0xb; 1779 case 96: return 0x1; 1780 case 108: return 0x3; 1781 1782 /* unsupported rates (should not get there) */ 1783 default: return 0; 1784 } 1785 } 1786 1787 /* quickly determine if a given rate is CCK or OFDM */ 1788 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1789 1790 static int 1791 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1792 int ac) 1793 { 1794 struct ieee80211com *ic = &sc->sc_ic; 1795 struct wpi_tx_ring *ring = &sc->txq[ac]; 1796 struct wpi_tx_desc *desc; 1797 struct wpi_tx_data *data; 1798 struct wpi_tx_cmd *cmd; 1799 struct wpi_cmd_data *tx; 1800 struct ieee80211_frame *wh; 1801 struct ieee80211_key *k; 1802 const struct chanAccParams *cap; 1803 struct mbuf *mnew; 1804 int i, error, rate, hdrlen, noack = 0; 1805 1806 desc = &ring->desc[ring->cur]; 1807 data = &ring->data[ring->cur]; 1808 1809 wh = mtod(m0, struct ieee80211_frame *); 1810 1811 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1812 hdrlen = sizeof (struct ieee80211_qosframe); 1813 cap = &ic->ic_wme.wme_chanParams; 1814 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1815 } else 1816 hdrlen = sizeof (struct ieee80211_frame); 1817 1818 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1819 k = ieee80211_crypto_encap(ic, ni, m0); 1820 if (k == NULL) { 1821 m_freem(m0); 1822 return ENOBUFS; 1823 } 1824 1825 /* packet header may have moved, reset our local pointer */ 1826 wh = mtod(m0, struct ieee80211_frame *); 1827 } 1828 1829 /* pickup a rate */ 1830 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1831 IEEE80211_FC0_TYPE_MGT) { 1832 /* mgmt frames are sent at the lowest available bit-rate */ 1833 rate = ni->ni_rates.rs_rates[0]; 1834 } else { 1835 if (ic->ic_fixed_rate != -1) { 1836 rate = ic->ic_sup_rates[ic->ic_curmode]. 1837 rs_rates[ic->ic_fixed_rate]; 1838 } else 1839 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1840 } 1841 rate &= IEEE80211_RATE_VAL; 1842 1843 1844 #if NBPFILTER > 0 1845 if (sc->sc_drvbpf != NULL) { 1846 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1847 1848 tap->wt_flags = 0; 1849 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1850 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1851 tap->wt_rate = rate; 1852 tap->wt_hwqueue = ac; 1853 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1854 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1855 1856 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1857 } 1858 #endif 1859 1860 cmd = &ring->cmd[ring->cur]; 1861 cmd->code = WPI_CMD_TX_DATA; 1862 cmd->flags = 0; 1863 cmd->qid = ring->qid; 1864 cmd->idx = ring->cur; 1865 1866 tx = (struct wpi_cmd_data *)cmd->data; 1867 tx->flags = 0; 1868 1869 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1870 tx->flags |= htole32(WPI_TX_NEED_ACK); 1871 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1872 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1873 1874 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1875 1876 /* retrieve destination node's id */ 1877 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1878 WPI_ID_BSS; 1879 1880 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1881 IEEE80211_FC0_TYPE_MGT) { 1882 /* tell h/w to set timestamp in probe responses */ 1883 if ((wh->i_fc[0] & 1884 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1885 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1886 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1887 1888 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1889 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1890 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1891 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1892 tx->timeout = htole16(3); 1893 else 1894 tx->timeout = htole16(2); 1895 } else 1896 tx->timeout = htole16(0); 1897 1898 tx->rate = wpi_plcp_signal(rate); 1899 1900 /* be very persistant at sending frames out */ 1901 tx->rts_ntries = 7; 1902 tx->data_ntries = 15; 1903 1904 tx->ofdm_mask = 0xff; 1905 tx->cck_mask = 0xf; 1906 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1907 1908 tx->len = htole16(m0->m_pkthdr.len); 1909 1910 /* save and trim IEEE802.11 header */ 1911 m_copydata(m0, 0, hdrlen, (void *)&tx->wh); 1912 m_adj(m0, hdrlen); 1913 1914 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1915 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1916 if (error != 0 && error != EFBIG) { 1917 aprint_error("%s: could not map mbuf (error %d)\n", 1918 sc->sc_dev.dv_xname, error); 1919 m_freem(m0); 1920 return error; 1921 } 1922 if (error != 0) { 1923 /* too many fragments, linearize */ 1924 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1925 if (mnew == NULL) { 1926 m_freem(m0); 1927 return ENOMEM; 1928 } 1929 1930 M_COPY_PKTHDR(mnew, m0); 1931 if (m0->m_pkthdr.len > MHLEN) { 1932 MCLGET(mnew, M_DONTWAIT); 1933 if (!(mnew->m_flags & M_EXT)) { 1934 m_freem(m0); 1935 m_freem(mnew); 1936 return ENOMEM; 1937 } 1938 } 1939 1940 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1941 m_freem(m0); 1942 mnew->m_len = mnew->m_pkthdr.len; 1943 m0 = mnew; 1944 1945 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1946 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1947 if (error != 0) { 1948 aprint_error("%s: could not map mbuf (error %d)\n", 1949 sc->sc_dev.dv_xname, error); 1950 m_freem(m0); 1951 return error; 1952 } 1953 } 1954 1955 data->m = m0; 1956 data->ni = ni; 1957 1958 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1959 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1960 1961 /* first scatter/gather segment is used by the tx data command */ 1962 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1963 (1 + data->map->dm_nsegs) << 24); 1964 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1965 ring->cur * sizeof (struct wpi_tx_cmd)); 1966 /*XXX The next line might be wrong. I don't use hdrlen*/ 1967 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1968 1969 for (i = 1; i <= data->map->dm_nsegs; i++) { 1970 desc->segs[i].addr = 1971 htole32(data->map->dm_segs[i - 1].ds_addr); 1972 desc->segs[i].len = 1973 htole32(data->map->dm_segs[i - 1].ds_len); 1974 } 1975 1976 ring->queued++; 1977 1978 /* kick ring */ 1979 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1980 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1981 1982 return 0; 1983 } 1984 1985 static void 1986 wpi_start(struct ifnet *ifp) 1987 { 1988 struct wpi_softc *sc = ifp->if_softc; 1989 struct ieee80211com *ic = &sc->sc_ic; 1990 struct ieee80211_node *ni; 1991 struct ether_header *eh; 1992 struct mbuf *m0; 1993 int ac; 1994 1995 /* 1996 * net80211 may still try to send management frames even if the 1997 * IFF_RUNNING flag is not set... 1998 */ 1999 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2000 return; 2001 2002 for (;;) { 2003 IF_DEQUEUE(&ic->ic_mgtq, m0); 2004 if (m0 != NULL) { 2005 2006 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 2007 m0->m_pkthdr.rcvif = NULL; 2008 2009 /* management frames go into ring 0 */ 2010 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2011 ifp->if_oerrors++; 2012 continue; 2013 } 2014 #if NBPFILTER > 0 2015 if (ic->ic_rawbpf != NULL) 2016 bpf_mtap(ic->ic_rawbpf, m0); 2017 #endif 2018 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 2019 ifp->if_oerrors++; 2020 break; 2021 } 2022 } else { 2023 if (ic->ic_state != IEEE80211_S_RUN) 2024 break; 2025 IFQ_POLL(&ifp->if_snd, m0); 2026 if (m0 == NULL) 2027 break; 2028 2029 if (m0->m_len < sizeof (*eh) && 2030 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 2031 ifp->if_oerrors++; 2032 continue; 2033 } 2034 eh = mtod(m0, struct ether_header *); 2035 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 2036 if (ni == NULL) { 2037 m_freem(m0); 2038 ifp->if_oerrors++; 2039 continue; 2040 } 2041 2042 /* classify mbuf so we can find which tx ring to use */ 2043 if (ieee80211_classify(ic, m0, ni) != 0) { 2044 m_freem(m0); 2045 ieee80211_free_node(ni); 2046 ifp->if_oerrors++; 2047 continue; 2048 } 2049 2050 /* no QoS encapsulation for EAPOL frames */ 2051 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 2052 M_WME_GETAC(m0) : WME_AC_BE; 2053 2054 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2055 /* there is no place left in this ring */ 2056 ifp->if_flags |= IFF_OACTIVE; 2057 break; 2058 } 2059 IFQ_DEQUEUE(&ifp->if_snd, m0); 2060 #if NBPFILTER > 0 2061 if (ifp->if_bpf != NULL) 2062 bpf_mtap(ifp->if_bpf, m0); 2063 #endif 2064 m0 = ieee80211_encap(ic, m0, ni); 2065 if (m0 == NULL) { 2066 ieee80211_free_node(ni); 2067 ifp->if_oerrors++; 2068 continue; 2069 } 2070 #if NBPFILTER > 0 2071 if (ic->ic_rawbpf != NULL) 2072 bpf_mtap(ic->ic_rawbpf, m0); 2073 #endif 2074 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2075 ieee80211_free_node(ni); 2076 ifp->if_oerrors++; 2077 break; 2078 } 2079 } 2080 2081 sc->sc_tx_timer = 5; 2082 ifp->if_timer = 1; 2083 } 2084 } 2085 2086 static void 2087 wpi_watchdog(struct ifnet *ifp) 2088 { 2089 struct wpi_softc *sc = ifp->if_softc; 2090 2091 ifp->if_timer = 0; 2092 2093 if (sc->sc_tx_timer > 0) { 2094 if (--sc->sc_tx_timer == 0) { 2095 aprint_error("%s: device timeout\n", 2096 sc->sc_dev.dv_xname); 2097 ifp->if_oerrors++; 2098 ifp->if_flags &= ~IFF_UP; 2099 wpi_stop(ifp, 1); 2100 return; 2101 } 2102 ifp->if_timer = 1; 2103 } 2104 2105 ieee80211_watchdog(&sc->sc_ic); 2106 } 2107 2108 static int 2109 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2110 { 2111 #define IS_RUNNING(ifp) \ 2112 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2113 2114 struct wpi_softc *sc = ifp->if_softc; 2115 struct ieee80211com *ic = &sc->sc_ic; 2116 int s, error = 0; 2117 2118 s = splnet(); 2119 2120 switch (cmd) { 2121 case SIOCSIFFLAGS: 2122 if (ifp->if_flags & IFF_UP) { 2123 if (!(ifp->if_flags & IFF_RUNNING)) 2124 wpi_init(ifp); 2125 } else { 2126 if (ifp->if_flags & IFF_RUNNING) 2127 wpi_stop(ifp, 1); 2128 } 2129 break; 2130 2131 case SIOCADDMULTI: 2132 case SIOCDELMULTI: 2133 /* XXX no h/w multicast filter? --dyoung */ 2134 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2135 /* setup multicast filter, etc */ 2136 error = 0; 2137 } 2138 break; 2139 2140 default: 2141 error = ieee80211_ioctl(ic, cmd, data); 2142 } 2143 2144 if (error == ENETRESET) { 2145 if (IS_RUNNING(ifp) && 2146 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2147 wpi_init(ifp); 2148 error = 0; 2149 } 2150 2151 splx(s); 2152 return error; 2153 2154 #undef IS_RUNNING 2155 } 2156 2157 /* 2158 * Extract various information from EEPROM. 2159 */ 2160 static void 2161 wpi_read_eeprom(struct wpi_softc *sc) 2162 { 2163 struct ieee80211com *ic = &sc->sc_ic; 2164 char domain[4]; 2165 int i; 2166 2167 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2168 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2169 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2170 2171 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2172 sc->type)); 2173 2174 /* read and print regulatory domain */ 2175 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2176 aprint_normal(", %.4s", domain); 2177 2178 /* read and print MAC address */ 2179 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2180 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2181 2182 /* read the list of authorized channels */ 2183 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2184 wpi_read_eeprom_channels(sc, i); 2185 2186 /* read the list of power groups */ 2187 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2188 wpi_read_eeprom_group(sc, i); 2189 } 2190 2191 static void 2192 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2193 { 2194 struct ieee80211com *ic = &sc->sc_ic; 2195 const struct wpi_chan_band *band = &wpi_bands[n]; 2196 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2197 int chan, i; 2198 2199 wpi_read_prom_data(sc, band->addr, channels, 2200 band->nchan * sizeof (struct wpi_eeprom_chan)); 2201 2202 for (i = 0; i < band->nchan; i++) { 2203 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2204 continue; 2205 2206 chan = band->chan[i]; 2207 2208 if (n == 0) { /* 2GHz band */ 2209 ic->ic_channels[chan].ic_freq = 2210 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2211 ic->ic_channels[chan].ic_flags = 2212 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2213 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2214 2215 } else { /* 5GHz band */ 2216 /* 2217 * Some 3945abg adapters support channels 7, 8, 11 2218 * and 12 in the 2GHz *and* 5GHz bands. 2219 * Because of limitations in our net80211(9) stack, 2220 * we can't support these channels in 5GHz band. 2221 */ 2222 if (chan <= 14) 2223 continue; 2224 2225 ic->ic_channels[chan].ic_freq = 2226 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2227 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2228 } 2229 2230 /* is active scan allowed on this channel? */ 2231 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2232 ic->ic_channels[chan].ic_flags |= 2233 IEEE80211_CHAN_PASSIVE; 2234 } 2235 2236 /* save maximum allowed power for this channel */ 2237 sc->maxpwr[chan] = channels[i].maxpwr; 2238 2239 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2240 chan, channels[i].flags, sc->maxpwr[chan])); 2241 } 2242 } 2243 2244 static void 2245 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2246 { 2247 struct wpi_power_group *group = &sc->groups[n]; 2248 struct wpi_eeprom_group rgroup; 2249 int i; 2250 2251 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2252 sizeof rgroup); 2253 2254 /* save power group information */ 2255 group->chan = rgroup.chan; 2256 group->maxpwr = rgroup.maxpwr; 2257 /* temperature at which the samples were taken */ 2258 group->temp = (int16_t)le16toh(rgroup.temp); 2259 2260 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2261 group->chan, group->maxpwr, group->temp)); 2262 2263 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2264 group->samples[i].index = rgroup.samples[i].index; 2265 group->samples[i].power = rgroup.samples[i].power; 2266 2267 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2268 group->samples[i].index, group->samples[i].power)); 2269 } 2270 } 2271 2272 /* 2273 * Send a command to the firmware. 2274 */ 2275 static int 2276 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2277 { 2278 struct wpi_tx_ring *ring = &sc->cmdq; 2279 struct wpi_tx_desc *desc; 2280 struct wpi_tx_cmd *cmd; 2281 2282 KASSERT(size <= sizeof cmd->data); 2283 2284 desc = &ring->desc[ring->cur]; 2285 cmd = &ring->cmd[ring->cur]; 2286 2287 cmd->code = code; 2288 cmd->flags = 0; 2289 cmd->qid = ring->qid; 2290 cmd->idx = ring->cur; 2291 memcpy(cmd->data, buf, size); 2292 2293 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2294 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2295 ring->cur * sizeof (struct wpi_tx_cmd)); 2296 desc->segs[0].len = htole32(4 + size); 2297 2298 /* kick cmd ring */ 2299 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2300 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2301 2302 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2303 } 2304 2305 static int 2306 wpi_wme_update(struct ieee80211com *ic) 2307 { 2308 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2309 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2310 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2311 const struct wmeParams *wmep; 2312 struct wpi_wme_setup wme; 2313 int ac; 2314 2315 /* don't override default WME values if WME is not actually enabled */ 2316 if (!(ic->ic_flags & IEEE80211_F_WME)) 2317 return 0; 2318 2319 wme.flags = 0; 2320 for (ac = 0; ac < WME_NUM_AC; ac++) { 2321 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2322 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2323 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2324 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2325 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2326 2327 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2328 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2329 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2330 } 2331 2332 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2333 #undef WPI_USEC 2334 #undef WPI_EXP2 2335 } 2336 2337 /* 2338 * Configure h/w multi-rate retries. 2339 */ 2340 static int 2341 wpi_mrr_setup(struct wpi_softc *sc) 2342 { 2343 struct ieee80211com *ic = &sc->sc_ic; 2344 struct wpi_mrr_setup mrr; 2345 int i, error; 2346 2347 /* CCK rates (not used with 802.11a) */ 2348 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2349 mrr.rates[i].flags = 0; 2350 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2351 /* fallback to the immediate lower CCK rate (if any) */ 2352 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2353 /* try one time at this rate before falling back to "next" */ 2354 mrr.rates[i].ntries = 1; 2355 } 2356 2357 /* OFDM rates (not used with 802.11b) */ 2358 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2359 mrr.rates[i].flags = 0; 2360 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2361 /* fallback to the immediate lower rate (if any) */ 2362 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2363 mrr.rates[i].next = (i == WPI_OFDM6) ? 2364 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2365 WPI_OFDM6 : WPI_CCK2) : 2366 i - 1; 2367 /* try one time at this rate before falling back to "next" */ 2368 mrr.rates[i].ntries = 1; 2369 } 2370 2371 /* setup MRR for control frames */ 2372 mrr.which = htole32(WPI_MRR_CTL); 2373 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2374 if (error != 0) { 2375 aprint_error("%s: could not setup MRR for control frames\n", 2376 sc->sc_dev.dv_xname); 2377 return error; 2378 } 2379 2380 /* setup MRR for data frames */ 2381 mrr.which = htole32(WPI_MRR_DATA); 2382 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2383 if (error != 0) { 2384 aprint_error("%s: could not setup MRR for data frames\n", 2385 sc->sc_dev.dv_xname); 2386 return error; 2387 } 2388 2389 return 0; 2390 } 2391 2392 static void 2393 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2394 { 2395 struct wpi_cmd_led led; 2396 2397 led.which = which; 2398 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2399 led.off = off; 2400 led.on = on; 2401 2402 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2403 } 2404 2405 static void 2406 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2407 { 2408 struct wpi_cmd_tsf tsf; 2409 uint64_t val, mod; 2410 2411 memset(&tsf, 0, sizeof tsf); 2412 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2413 tsf.bintval = htole16(ni->ni_intval); 2414 tsf.lintval = htole16(10); 2415 2416 /* compute remaining time until next beacon */ 2417 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2418 mod = le64toh(tsf.tstamp) % val; 2419 tsf.binitval = htole32((uint32_t)(val - mod)); 2420 2421 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2422 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2423 2424 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2425 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2426 } 2427 2428 /* 2429 * Update Tx power to match what is defined for channel `c'. 2430 */ 2431 static int 2432 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2433 { 2434 struct ieee80211com *ic = &sc->sc_ic; 2435 struct wpi_power_group *group; 2436 struct wpi_cmd_txpower txpower; 2437 u_int chan; 2438 int i; 2439 2440 /* get channel number */ 2441 chan = ieee80211_chan2ieee(ic, c); 2442 2443 /* find the power group to which this channel belongs */ 2444 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2445 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2446 if (chan <= group->chan) 2447 break; 2448 } else 2449 group = &sc->groups[0]; 2450 2451 memset(&txpower, 0, sizeof txpower); 2452 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2453 txpower.chan = htole16(chan); 2454 2455 /* set Tx power for all OFDM and CCK rates */ 2456 for (i = 0; i <= 11 ; i++) { 2457 /* retrieve Tx power for this channel/rate combination */ 2458 int idx = wpi_get_power_index(sc, group, c, 2459 wpi_ridx_to_rate[i]); 2460 2461 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2462 2463 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2464 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2465 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2466 } else { 2467 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2468 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2469 } 2470 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2471 wpi_ridx_to_rate[i], idx)); 2472 } 2473 2474 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2475 } 2476 2477 /* 2478 * Determine Tx power index for a given channel/rate combination. 2479 * This takes into account the regulatory information from EEPROM and the 2480 * current temperature. 2481 */ 2482 static int 2483 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2484 struct ieee80211_channel *c, int rate) 2485 { 2486 /* fixed-point arithmetic division using a n-bit fractional part */ 2487 #define fdivround(a, b, n) \ 2488 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2489 2490 /* linear interpolation */ 2491 #define interpolate(x, x1, y1, x2, y2, n) \ 2492 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2493 2494 struct ieee80211com *ic = &sc->sc_ic; 2495 struct wpi_power_sample *sample; 2496 int pwr, idx; 2497 u_int chan; 2498 2499 /* get channel number */ 2500 chan = ieee80211_chan2ieee(ic, c); 2501 2502 /* default power is group's maximum power - 3dB */ 2503 pwr = group->maxpwr / 2; 2504 2505 /* decrease power for highest OFDM rates to reduce distortion */ 2506 switch (rate) { 2507 case 72: /* 36Mb/s */ 2508 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2509 break; 2510 case 96: /* 48Mb/s */ 2511 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2512 break; 2513 case 108: /* 54Mb/s */ 2514 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2515 break; 2516 } 2517 2518 /* never exceed channel's maximum allowed Tx power */ 2519 pwr = min(pwr, sc->maxpwr[chan]); 2520 2521 /* retrieve power index into gain tables from samples */ 2522 for (sample = group->samples; sample < &group->samples[3]; sample++) 2523 if (pwr > sample[1].power) 2524 break; 2525 /* fixed-point linear interpolation using a 19-bit fractional part */ 2526 idx = interpolate(pwr, sample[0].power, sample[0].index, 2527 sample[1].power, sample[1].index, 19); 2528 2529 /* 2530 * Adjust power index based on current temperature: 2531 * - if cooler than factory-calibrated: decrease output power 2532 * - if warmer than factory-calibrated: increase output power 2533 */ 2534 idx -= (sc->temp - group->temp) * 11 / 100; 2535 2536 /* decrease power for CCK rates (-5dB) */ 2537 if (!WPI_RATE_IS_OFDM(rate)) 2538 idx += 10; 2539 2540 /* keep power index in a valid range */ 2541 if (idx < 0) 2542 return 0; 2543 if (idx > WPI_MAX_PWR_INDEX) 2544 return WPI_MAX_PWR_INDEX; 2545 return idx; 2546 2547 #undef interpolate 2548 #undef fdivround 2549 } 2550 2551 /* 2552 * Build a beacon frame that the firmware will broadcast periodically in 2553 * IBSS or HostAP modes. 2554 */ 2555 static int 2556 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2557 { 2558 struct ieee80211com *ic = &sc->sc_ic; 2559 struct wpi_tx_ring *ring = &sc->cmdq; 2560 struct wpi_tx_desc *desc; 2561 struct wpi_tx_data *data; 2562 struct wpi_tx_cmd *cmd; 2563 struct wpi_cmd_beacon *bcn; 2564 struct ieee80211_beacon_offsets bo; 2565 struct mbuf *m0; 2566 int error; 2567 2568 desc = &ring->desc[ring->cur]; 2569 data = &ring->data[ring->cur]; 2570 2571 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2572 if (m0 == NULL) { 2573 aprint_error("%s: could not allocate beacon frame\n", 2574 sc->sc_dev.dv_xname); 2575 return ENOMEM; 2576 } 2577 2578 cmd = &ring->cmd[ring->cur]; 2579 cmd->code = WPI_CMD_SET_BEACON; 2580 cmd->flags = 0; 2581 cmd->qid = ring->qid; 2582 cmd->idx = ring->cur; 2583 2584 bcn = (struct wpi_cmd_beacon *)cmd->data; 2585 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2586 bcn->id = WPI_ID_BROADCAST; 2587 bcn->ofdm_mask = 0xff; 2588 bcn->cck_mask = 0x0f; 2589 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2590 bcn->len = htole16(m0->m_pkthdr.len); 2591 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2592 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2593 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2594 2595 /* save and trim IEEE802.11 header */ 2596 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2597 m_adj(m0, sizeof (struct ieee80211_frame)); 2598 2599 /* assume beacon frame is contiguous */ 2600 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2601 BUS_DMA_READ | BUS_DMA_NOWAIT); 2602 if (error) { 2603 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2604 m_freem(m0); 2605 return error; 2606 } 2607 2608 data->m = m0; 2609 2610 /* first scatter/gather segment is used by the beacon command */ 2611 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2612 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2613 ring->cur * sizeof (struct wpi_tx_cmd)); 2614 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2615 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2616 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2617 2618 /* kick cmd ring */ 2619 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2620 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2621 2622 return 0; 2623 } 2624 2625 static int 2626 wpi_auth(struct wpi_softc *sc) 2627 { 2628 struct ieee80211com *ic = &sc->sc_ic; 2629 struct ieee80211_node *ni = ic->ic_bss; 2630 struct wpi_node_info node; 2631 int error; 2632 2633 /* update adapter's configuration */ 2634 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2635 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2636 sc->config.flags = htole32(WPI_CONFIG_TSF); 2637 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2638 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2639 WPI_CONFIG_24GHZ); 2640 } 2641 switch (ic->ic_curmode) { 2642 case IEEE80211_MODE_11A: 2643 sc->config.cck_mask = 0; 2644 sc->config.ofdm_mask = 0x15; 2645 break; 2646 case IEEE80211_MODE_11B: 2647 sc->config.cck_mask = 0x03; 2648 sc->config.ofdm_mask = 0; 2649 break; 2650 default: /* assume 802.11b/g */ 2651 sc->config.cck_mask = 0x0f; 2652 sc->config.ofdm_mask = 0x15; 2653 } 2654 2655 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2656 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2657 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2658 sizeof (struct wpi_config), 1); 2659 if (error != 0) { 2660 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2661 return error; 2662 } 2663 2664 /* configuration has changed, set Tx power accordingly */ 2665 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2666 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2667 return error; 2668 } 2669 2670 /* add default node */ 2671 memset(&node, 0, sizeof node); 2672 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2673 node.id = WPI_ID_BSS; 2674 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2675 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2676 node.action = htole32(WPI_ACTION_SET_RATE); 2677 node.antenna = WPI_ANTENNA_BOTH; 2678 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2679 if (error != 0) { 2680 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2681 return error; 2682 } 2683 2684 return 0; 2685 } 2686 2687 /* 2688 * Send a scan request to the firmware. Since this command is huge, we map it 2689 * into a mbuf instead of using the pre-allocated set of commands. 2690 */ 2691 static int 2692 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2693 { 2694 struct ieee80211com *ic = &sc->sc_ic; 2695 struct wpi_tx_ring *ring = &sc->cmdq; 2696 struct wpi_tx_desc *desc; 2697 struct wpi_tx_data *data; 2698 struct wpi_tx_cmd *cmd; 2699 struct wpi_scan_hdr *hdr; 2700 struct wpi_scan_chan *chan; 2701 struct ieee80211_frame *wh; 2702 struct ieee80211_rateset *rs; 2703 struct ieee80211_channel *c; 2704 enum ieee80211_phymode mode; 2705 uint8_t *frm; 2706 int nrates, pktlen, error; 2707 2708 desc = &ring->desc[ring->cur]; 2709 data = &ring->data[ring->cur]; 2710 2711 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2712 if (data->m == NULL) { 2713 aprint_error("%s: could not allocate mbuf for scan command\n", 2714 sc->sc_dev.dv_xname); 2715 return ENOMEM; 2716 } 2717 2718 MCLGET(data->m, M_DONTWAIT); 2719 if (!(data->m->m_flags & M_EXT)) { 2720 m_freem(data->m); 2721 data->m = NULL; 2722 aprint_error("%s: could not allocate mbuf for scan command\n", 2723 sc->sc_dev.dv_xname); 2724 return ENOMEM; 2725 } 2726 2727 cmd = mtod(data->m, struct wpi_tx_cmd *); 2728 cmd->code = WPI_CMD_SCAN; 2729 cmd->flags = 0; 2730 cmd->qid = ring->qid; 2731 cmd->idx = ring->cur; 2732 2733 hdr = (struct wpi_scan_hdr *)cmd->data; 2734 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2735 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2736 hdr->id = WPI_ID_BROADCAST; 2737 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2738 2739 /* 2740 * Move to the next channel if no packets are received within 5 msecs 2741 * after sending the probe request (this helps to reduce the duration 2742 * of active scans). 2743 */ 2744 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2745 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2746 2747 if (flags & IEEE80211_CHAN_A) { 2748 hdr->crc_threshold = htole16(1); 2749 /* send probe requests at 6Mbps */ 2750 hdr->rate = wpi_plcp_signal(12); 2751 } else { 2752 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2753 /* send probe requests at 1Mbps */ 2754 hdr->rate = wpi_plcp_signal(2); 2755 } 2756 2757 /* for directed scans, firmware inserts the essid IE itself */ 2758 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2759 hdr->essid[0].len = ic->ic_des_esslen; 2760 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2761 2762 /* 2763 * Build a probe request frame. Most of the following code is a 2764 * copy & paste of what is done in net80211. 2765 */ 2766 wh = (struct ieee80211_frame *)(hdr + 1); 2767 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2768 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2769 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2770 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2771 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2772 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2773 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2774 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2775 2776 frm = (uint8_t *)(wh + 1); 2777 2778 /* add empty essid IE (firmware generates it for directed scans) */ 2779 *frm++ = IEEE80211_ELEMID_SSID; 2780 *frm++ = 0; 2781 2782 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2783 rs = &ic->ic_sup_rates[mode]; 2784 2785 /* add supported rates IE */ 2786 *frm++ = IEEE80211_ELEMID_RATES; 2787 nrates = rs->rs_nrates; 2788 if (nrates > IEEE80211_RATE_SIZE) 2789 nrates = IEEE80211_RATE_SIZE; 2790 *frm++ = nrates; 2791 memcpy(frm, rs->rs_rates, nrates); 2792 frm += nrates; 2793 2794 /* add supported xrates IE */ 2795 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2796 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2797 *frm++ = IEEE80211_ELEMID_XRATES; 2798 *frm++ = nrates; 2799 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2800 frm += nrates; 2801 } 2802 2803 /* setup length of probe request */ 2804 hdr->paylen = htole16(frm - (uint8_t *)wh); 2805 2806 chan = (struct wpi_scan_chan *)frm; 2807 for (c = &ic->ic_channels[1]; 2808 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2809 if ((c->ic_flags & flags) != flags) 2810 continue; 2811 2812 chan->chan = ieee80211_chan2ieee(ic, c); 2813 chan->flags = 0; 2814 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2815 chan->flags |= WPI_CHAN_ACTIVE; 2816 if (ic->ic_des_esslen != 0) 2817 chan->flags |= WPI_CHAN_DIRECT; 2818 } 2819 chan->dsp_gain = 0x6e; 2820 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2821 chan->rf_gain = 0x3b; 2822 chan->active = htole16(10); 2823 chan->passive = htole16(110); 2824 } else { 2825 chan->rf_gain = 0x28; 2826 chan->active = htole16(20); 2827 chan->passive = htole16(120); 2828 } 2829 hdr->nchan++; 2830 chan++; 2831 2832 frm += sizeof (struct wpi_scan_chan); 2833 } 2834 hdr->len = htole16(frm - (uint8_t *)hdr); 2835 pktlen = frm - (uint8_t *)cmd; 2836 2837 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2838 NULL, BUS_DMA_NOWAIT); 2839 if (error) { 2840 aprint_error("%s: could not map scan command\n", 2841 sc->sc_dev.dv_xname); 2842 m_freem(data->m); 2843 data->m = NULL; 2844 return error; 2845 } 2846 2847 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2848 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2849 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2850 2851 /* kick cmd ring */ 2852 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2853 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2854 2855 return 0; /* will be notified async. of failure/success */ 2856 } 2857 2858 static int 2859 wpi_config(struct wpi_softc *sc) 2860 { 2861 struct ieee80211com *ic = &sc->sc_ic; 2862 struct ifnet *ifp = ic->ic_ifp; 2863 struct wpi_power power; 2864 struct wpi_bluetooth bluetooth; 2865 struct wpi_node_info node; 2866 int error; 2867 2868 memset(&power, 0, sizeof power); 2869 power.flags = htole32(WPI_POWER_CAM | 0x8); 2870 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2871 if (error != 0) { 2872 aprint_error("%s: could not set power mode\n", 2873 sc->sc_dev.dv_xname); 2874 return error; 2875 } 2876 2877 /* configure bluetooth coexistence */ 2878 memset(&bluetooth, 0, sizeof bluetooth); 2879 bluetooth.flags = 3; 2880 bluetooth.lead = 0xaa; 2881 bluetooth.kill = 1; 2882 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2883 0); 2884 if (error != 0) { 2885 aprint_error( 2886 "%s: could not configure bluetooth coexistence\n", 2887 sc->sc_dev.dv_xname); 2888 return error; 2889 } 2890 2891 /* configure adapter */ 2892 memset(&sc->config, 0, sizeof (struct wpi_config)); 2893 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2894 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2895 /*set default channel*/ 2896 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2897 sc->config.flags = htole32(WPI_CONFIG_TSF); 2898 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2899 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2900 WPI_CONFIG_24GHZ); 2901 } 2902 sc->config.filter = 0; 2903 switch (ic->ic_opmode) { 2904 case IEEE80211_M_STA: 2905 sc->config.mode = WPI_MODE_STA; 2906 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2907 break; 2908 case IEEE80211_M_IBSS: 2909 case IEEE80211_M_AHDEMO: 2910 sc->config.mode = WPI_MODE_IBSS; 2911 break; 2912 case IEEE80211_M_HOSTAP: 2913 sc->config.mode = WPI_MODE_HOSTAP; 2914 break; 2915 case IEEE80211_M_MONITOR: 2916 sc->config.mode = WPI_MODE_MONITOR; 2917 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2918 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2919 break; 2920 } 2921 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2922 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2923 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2924 sizeof (struct wpi_config), 0); 2925 if (error != 0) { 2926 aprint_error("%s: configure command failed\n", 2927 sc->sc_dev.dv_xname); 2928 return error; 2929 } 2930 2931 /* configuration has changed, set Tx power accordingly */ 2932 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2933 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2934 return error; 2935 } 2936 2937 /* add broadcast node */ 2938 memset(&node, 0, sizeof node); 2939 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2940 node.id = WPI_ID_BROADCAST; 2941 node.rate = wpi_plcp_signal(2); 2942 node.action = htole32(WPI_ACTION_SET_RATE); 2943 node.antenna = WPI_ANTENNA_BOTH; 2944 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2945 if (error != 0) { 2946 aprint_error("%s: could not add broadcast node\n", 2947 sc->sc_dev.dv_xname); 2948 return error; 2949 } 2950 2951 if ((error = wpi_mrr_setup(sc)) != 0) { 2952 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2953 return error; 2954 } 2955 2956 return 0; 2957 } 2958 2959 static void 2960 wpi_stop_master(struct wpi_softc *sc) 2961 { 2962 uint32_t tmp; 2963 int ntries; 2964 2965 tmp = WPI_READ(sc, WPI_RESET); 2966 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2967 2968 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2969 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2970 return; /* already asleep */ 2971 2972 for (ntries = 0; ntries < 100; ntries++) { 2973 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2974 break; 2975 DELAY(10); 2976 } 2977 if (ntries == 100) { 2978 aprint_error("%s: timeout waiting for master\n", 2979 sc->sc_dev.dv_xname); 2980 } 2981 } 2982 2983 static int 2984 wpi_power_up(struct wpi_softc *sc) 2985 { 2986 uint32_t tmp; 2987 int ntries; 2988 2989 wpi_mem_lock(sc); 2990 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2991 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2992 wpi_mem_unlock(sc); 2993 2994 for (ntries = 0; ntries < 5000; ntries++) { 2995 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2996 break; 2997 DELAY(10); 2998 } 2999 if (ntries == 5000) { 3000 aprint_error("%s: timeout waiting for NIC to power up\n", 3001 sc->sc_dev.dv_xname); 3002 return ETIMEDOUT; 3003 } 3004 return 0; 3005 } 3006 3007 static int 3008 wpi_reset(struct wpi_softc *sc) 3009 { 3010 uint32_t tmp; 3011 int ntries; 3012 3013 /* clear any pending interrupts */ 3014 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3015 3016 tmp = WPI_READ(sc, WPI_PLL_CTL); 3017 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 3018 3019 tmp = WPI_READ(sc, WPI_CHICKEN); 3020 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 3021 3022 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3023 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 3024 3025 /* wait for clock stabilization */ 3026 for (ntries = 0; ntries < 1000; ntries++) { 3027 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 3028 break; 3029 DELAY(10); 3030 } 3031 if (ntries == 1000) { 3032 aprint_error("%s: timeout waiting for clock stabilization\n", 3033 sc->sc_dev.dv_xname); 3034 return ETIMEDOUT; 3035 } 3036 3037 /* initialize EEPROM */ 3038 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3039 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3040 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 3041 return EIO; 3042 } 3043 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3044 3045 return 0; 3046 } 3047 3048 static void 3049 wpi_hw_config(struct wpi_softc *sc) 3050 { 3051 uint32_t rev, hw; 3052 3053 /* voodoo from the reference driver */ 3054 hw = WPI_READ(sc, WPI_HWCONFIG); 3055 3056 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3057 rev = PCI_REVISION(rev); 3058 if ((rev & 0xc0) == 0x40) 3059 hw |= WPI_HW_ALM_MB; 3060 else if (!(rev & 0x80)) 3061 hw |= WPI_HW_ALM_MM; 3062 3063 if (sc->cap == 0x80) 3064 hw |= WPI_HW_SKU_MRC; 3065 3066 hw &= ~WPI_HW_REV_D; 3067 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3068 hw |= WPI_HW_REV_D; 3069 3070 if (sc->type > 1) 3071 hw |= WPI_HW_TYPE_B; 3072 3073 DPRINTF(("setting h/w config %x\n", hw)); 3074 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3075 } 3076 3077 static int 3078 wpi_init(struct ifnet *ifp) 3079 { 3080 struct wpi_softc *sc = ifp->if_softc; 3081 struct ieee80211com *ic = &sc->sc_ic; 3082 uint32_t tmp; 3083 int qid, ntries, error; 3084 3085 wpi_stop(ifp,1); 3086 (void)wpi_reset(sc); 3087 3088 wpi_mem_lock(sc); 3089 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3090 DELAY(20); 3091 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3092 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3093 wpi_mem_unlock(sc); 3094 3095 (void)wpi_power_up(sc); 3096 wpi_hw_config(sc); 3097 3098 /* init Rx ring */ 3099 wpi_mem_lock(sc); 3100 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3101 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3102 offsetof(struct wpi_shared, next)); 3103 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3104 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3105 wpi_mem_unlock(sc); 3106 3107 /* init Tx rings */ 3108 wpi_mem_lock(sc); 3109 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3110 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3111 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3112 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3113 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3114 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3115 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3116 3117 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3118 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3119 3120 for (qid = 0; qid < 6; qid++) { 3121 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3122 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3123 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3124 } 3125 wpi_mem_unlock(sc); 3126 3127 /* clear "radio off" and "disable command" bits (reversed logic) */ 3128 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3129 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3130 3131 /* clear any pending interrupts */ 3132 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3133 /* enable interrupts */ 3134 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3135 3136 /* not sure why/if this is necessary... */ 3137 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3138 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3139 3140 if ((error = wpi_load_firmware(sc)) != 0) { 3141 aprint_error("%s: could not load firmware\n", sc->sc_dev.dv_xname); 3142 goto fail1; 3143 } 3144 3145 /* wait for thermal sensors to calibrate */ 3146 for (ntries = 0; ntries < 1000; ntries++) { 3147 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3148 break; 3149 DELAY(10); 3150 } 3151 if (ntries == 1000) { 3152 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 3153 sc->sc_dev.dv_xname); 3154 error = ETIMEDOUT; 3155 goto fail1; 3156 } 3157 3158 DPRINTF(("temperature %d\n", sc->temp)); 3159 3160 if ((error = wpi_config(sc)) != 0) { 3161 aprint_error("%s: could not configure device\n", 3162 sc->sc_dev.dv_xname); 3163 goto fail1; 3164 } 3165 3166 ifp->if_flags &= ~IFF_OACTIVE; 3167 ifp->if_flags |= IFF_RUNNING; 3168 3169 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3170 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3171 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3172 } 3173 else 3174 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3175 3176 return 0; 3177 3178 fail1: wpi_stop(ifp, 1); 3179 return error; 3180 } 3181 3182 3183 static void 3184 wpi_stop(struct ifnet *ifp, int disable) 3185 { 3186 struct wpi_softc *sc = ifp->if_softc; 3187 struct ieee80211com *ic = &sc->sc_ic; 3188 uint32_t tmp; 3189 int ac; 3190 3191 ifp->if_timer = sc->sc_tx_timer = 0; 3192 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3193 3194 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3195 3196 /* disable interrupts */ 3197 WPI_WRITE(sc, WPI_MASK, 0); 3198 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3199 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3200 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3201 3202 wpi_mem_lock(sc); 3203 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3204 wpi_mem_unlock(sc); 3205 3206 /* reset all Tx rings */ 3207 for (ac = 0; ac < 4; ac++) 3208 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3209 wpi_reset_tx_ring(sc, &sc->cmdq); 3210 3211 /* reset Rx ring */ 3212 wpi_reset_rx_ring(sc, &sc->rxq); 3213 3214 wpi_mem_lock(sc); 3215 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3216 wpi_mem_unlock(sc); 3217 3218 DELAY(5); 3219 3220 wpi_stop_master(sc); 3221 3222 tmp = WPI_READ(sc, WPI_RESET); 3223 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3224 } 3225
Indexes created Thu Oct 02 01:09:59 GMT 2025