if_wpi.c revision 1.17.4.9
1 /* $NetBSD: if_wpi.c,v 1.17.4.9 2007/11/06 14:27:26 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007 5 * Damien Bergamini <damien.bergamini (at) free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __KERNEL_RCSID(0, "$NetBSD: if_wpi.c,v 1.17.4.9 2007/11/06 14:27:26 joerg Exp $"); 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27 #include "bpfilter.h" 28 29 #include <sys/param.h> 30 #include <sys/sockio.h> 31 #include <sys/sysctl.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/conf.h> 38 #include <sys/kauth.h> 39 #include <sys/callout.h> 40 41 #include <sys/bus.h> 42 #include <machine/endian.h> 43 #include <sys/intr.h> 44 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcidevs.h> 48 49 #if NBPFILTER > 0 50 #include <net/bpf.h> 51 #endif 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_dl.h> 55 #include <net/if_ether.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_amrr.h> 61 #include <net80211/ieee80211_radiotap.h> 62 63 #include <netinet/in.h> 64 #include <netinet/in_systm.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip.h> 67 68 #include <dev/firmload.h> 69 70 #include <dev/pci/if_wpireg.h> 71 #include <dev/pci/if_wpivar.h> 72 73 #ifdef WPI_DEBUG 74 #define DPRINTF(x) if (wpi_debug > 0) printf x 75 #define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 76 int wpi_debug = 1; 77 #else 78 #define DPRINTF(x) 79 #define DPRINTFN(n, x) 80 #endif 81 82 /* 83 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 84 */ 85 static const struct ieee80211_rateset wpi_rateset_11a = 86 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 87 88 static const struct ieee80211_rateset wpi_rateset_11b = 89 { 4, { 2, 4, 11, 22 } }; 90 91 static const struct ieee80211_rateset wpi_rateset_11g = 92 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 93 94 static int wpi_match(struct device *, struct cfdata *, void *); 95 static void wpi_attach(struct device *, struct device *, void *); 96 static int wpi_detach(struct device*, int); 97 static int wpi_dma_contig_alloc(bus_dma_tag_t, struct wpi_dma_info *, 98 void **, bus_size_t, bus_size_t, int); 99 static void wpi_dma_contig_free(struct wpi_dma_info *); 100 static int wpi_alloc_shared(struct wpi_softc *); 101 static void wpi_free_shared(struct wpi_softc *); 102 static int wpi_alloc_fwmem(struct wpi_softc *); 103 static void wpi_free_fwmem(struct wpi_softc *); 104 static struct wpi_rbuf *wpi_alloc_rbuf(struct wpi_softc *); 105 static void wpi_free_rbuf(struct mbuf *, void *, size_t, void *); 106 static int wpi_alloc_rpool(struct wpi_softc *); 107 static void wpi_free_rpool(struct wpi_softc *); 108 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 109 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 110 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 111 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 112 int); 113 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 114 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 115 static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 116 static void wpi_newassoc(struct ieee80211_node *, int); 117 static int wpi_media_change(struct ifnet *); 118 static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 119 static void wpi_fix_channel(struct ieee80211com *, struct mbuf *); 120 static void wpi_mem_lock(struct wpi_softc *); 121 static void wpi_mem_unlock(struct wpi_softc *); 122 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 123 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 124 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 125 const uint32_t *, int); 126 static int wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 127 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 128 static int wpi_load_firmware(struct wpi_softc *); 129 static void wpi_calib_timeout(void *); 130 static void wpi_iter_func(void *, struct ieee80211_node *); 131 static void wpi_power_calibration(struct wpi_softc *, int); 132 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 133 struct wpi_rx_data *); 134 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 135 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 136 static void wpi_notif_intr(struct wpi_softc *); 137 static int wpi_intr(void *); 138 static void wpi_read_eeprom(struct wpi_softc *); 139 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 140 static void wpi_read_eeprom_group(struct wpi_softc *, int); 141 static uint8_t wpi_plcp_signal(int); 142 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 143 struct ieee80211_node *, int); 144 static void wpi_start(struct ifnet *); 145 static void wpi_watchdog(struct ifnet *); 146 static int wpi_ioctl(struct ifnet *, u_long, void *); 147 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 148 static int wpi_wme_update(struct ieee80211com *); 149 static int wpi_mrr_setup(struct wpi_softc *); 150 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 151 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 152 static int wpi_set_txpower(struct wpi_softc *, 153 struct ieee80211_channel *, int); 154 static int wpi_get_power_index(struct wpi_softc *, 155 struct wpi_power_group *, struct ieee80211_channel *, int); 156 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 157 static int wpi_auth(struct wpi_softc *); 158 static int wpi_scan(struct wpi_softc *, uint16_t); 159 static int wpi_config(struct wpi_softc *); 160 static void wpi_stop_master(struct wpi_softc *); 161 static int wpi_power_up(struct wpi_softc *); 162 static int wpi_reset(struct wpi_softc *); 163 static void wpi_hw_config(struct wpi_softc *); 164 static int wpi_init(struct ifnet *); 165 static void wpi_stop(struct ifnet *, int); 166 static bool wpi_resume(device_t); 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 callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); 209 210 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 211 revision = PCI_REVISION(pa->pa_class); 212 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 213 214 pci_disable_retry(pa->pa_pc, pa->pa_tag); 215 216 /* enable bus-mastering */ 217 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 218 data |= PCI_COMMAND_MASTER_ENABLE; 219 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 220 221 /* map the register window */ 222 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 223 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 224 if (error != 0) { 225 aprint_error("%s: could not map memory space\n", 226 sc->sc_dev.dv_xname); 227 return; 228 } 229 230 sc->sc_st = memt; 231 sc->sc_sh = memh; 232 sc->sc_dmat = pa->pa_dmat; 233 234 if (pci_intr_map(pa, &ih) != 0) { 235 aprint_error("%s: could not map interrupt\n", 236 sc->sc_dev.dv_xname); 237 return; 238 } 239 240 intrstr = pci_intr_string(sc->sc_pct, ih); 241 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 242 if (sc->sc_ih == NULL) { 243 aprint_error("%s: could not establish interrupt", 244 sc->sc_dev.dv_xname); 245 if (intrstr != NULL) 246 aprint_error(" at %s", intrstr); 247 aprint_error("\n"); 248 return; 249 } 250 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 251 252 if (wpi_reset(sc) != 0) { 253 aprint_error("%s: could not reset adapter\n", 254 sc->sc_dev.dv_xname); 255 return; 256 } 257 258 /* 259 * Allocate DMA memory for firmware transfers. 260 */ 261 if ((error = wpi_alloc_fwmem(sc)) != 0) { 262 aprint_error(": could not allocate firmware memory\n"); 263 return; 264 } 265 266 /* 267 * Allocate shared page and Tx/Rx rings. 268 */ 269 if ((error = wpi_alloc_shared(sc)) != 0) { 270 aprint_error("%s: could not allocate shared area\n", 271 sc->sc_dev.dv_xname); 272 goto fail1; 273 } 274 275 if ((error = wpi_alloc_rpool(sc)) != 0) { 276 aprint_error("%s: could not allocate Rx buffers\n", 277 sc->sc_dev.dv_xname); 278 goto fail2; 279 } 280 281 for (ac = 0; ac < 4; ac++) { 282 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 283 if (error != 0) { 284 aprint_error("%s: could not allocate Tx ring %d\n", 285 sc->sc_dev.dv_xname, ac); 286 goto fail3; 287 } 288 } 289 290 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 291 if (error != 0) { 292 aprint_error("%s: could not allocate command ring\n", 293 sc->sc_dev.dv_xname); 294 goto fail3; 295 } 296 297 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 298 aprint_error("%s: could not allocate Rx ring\n", 299 sc->sc_dev.dv_xname); 300 goto fail4; 301 } 302 303 ic->ic_ifp = ifp; 304 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 305 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 306 ic->ic_state = IEEE80211_S_INIT; 307 308 /* set device capabilities */ 309 ic->ic_caps = 310 IEEE80211_C_IBSS | /* IBSS mode support */ 311 IEEE80211_C_WPA | /* 802.11i */ 312 IEEE80211_C_MONITOR | /* monitor mode supported */ 313 IEEE80211_C_TXPMGT | /* tx power management */ 314 IEEE80211_C_SHSLOT | /* short slot time supported */ 315 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 316 IEEE80211_C_WME; /* 802.11e */ 317 318 /* read supported channels and MAC address from EEPROM */ 319 wpi_read_eeprom(sc); 320 321 /* set supported .11a, .11b, .11g rates */ 322 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 323 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 324 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 325 326 ic->ic_ibss_chan = &ic->ic_channels[0]; 327 328 ifp->if_softc = sc; 329 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 330 ifp->if_init = wpi_init; 331 ifp->if_stop = wpi_stop; 332 ifp->if_ioctl = wpi_ioctl; 333 ifp->if_start = wpi_start; 334 ifp->if_watchdog = wpi_watchdog; 335 IFQ_SET_READY(&ifp->if_snd); 336 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 337 338 if_attach(ifp); 339 ieee80211_ifattach(ic); 340 /* override default methods */ 341 ic->ic_node_alloc = wpi_node_alloc; 342 ic->ic_newassoc = wpi_newassoc; 343 ic->ic_wme.wme_update = wpi_wme_update; 344 345 /* override state transition machine */ 346 sc->sc_newstate = ic->ic_newstate; 347 ic->ic_newstate = wpi_newstate; 348 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 349 350 sc->amrr.amrr_min_success_threshold = 1; 351 sc->amrr.amrr_max_success_threshold = 15; 352 353 if (!pnp_device_register(self, NULL, wpi_resume)) 354 aprint_error_dev(self, "couldn't establish power handler\n"); 355 else 356 pnp_class_network_register(self, ifp); 357 358 #if NBPFILTER > 0 359 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 360 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 361 &sc->sc_drvbpf); 362 363 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 364 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 365 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 366 367 sc->sc_txtap_len = sizeof sc->sc_txtapu; 368 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 369 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 370 #endif 371 372 ieee80211_announce(ic); 373 374 return; 375 376 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 377 fail3: while (--ac >= 0) 378 wpi_free_tx_ring(sc, &sc->txq[ac]); 379 wpi_free_rpool(sc); 380 fail2: wpi_free_shared(sc); 381 fail1: wpi_free_fwmem(sc); 382 } 383 384 static int 385 wpi_detach(struct device* self, int flags __unused) 386 { 387 struct wpi_softc *sc = (struct wpi_softc *)self; 388 struct ifnet *ifp = sc->sc_ic.ic_ifp; 389 int ac; 390 391 wpi_stop(ifp, 1); 392 393 #if NBPFILTER > 0 394 if (ifp != NULL) 395 bpfdetach(ifp); 396 #endif 397 ieee80211_ifdetach(&sc->sc_ic); 398 if (ifp != NULL) 399 if_detach(ifp); 400 401 for (ac = 0; ac < 4; ac++) 402 wpi_free_tx_ring(sc, &sc->txq[ac]); 403 wpi_free_tx_ring(sc, &sc->cmdq); 404 wpi_free_rx_ring(sc, &sc->rxq); 405 wpi_free_rpool(sc); 406 wpi_free_shared(sc); 407 408 if (sc->sc_ih != NULL) { 409 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 410 sc->sc_ih = NULL; 411 } 412 413 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 414 415 return 0; 416 } 417 418 static int 419 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 420 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 421 { 422 int nsegs, error; 423 424 dma->tag = tag; 425 dma->size = size; 426 427 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 428 if (error != 0) 429 goto fail; 430 431 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 432 flags); 433 if (error != 0) 434 goto fail; 435 436 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 437 if (error != 0) 438 goto fail; 439 440 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 441 if (error != 0) 442 goto fail; 443 444 memset(dma->vaddr, 0, size); 445 446 dma->paddr = dma->map->dm_segs[0].ds_addr; 447 if (kvap != NULL) 448 *kvap = dma->vaddr; 449 450 return 0; 451 452 fail: wpi_dma_contig_free(dma); 453 return error; 454 } 455 456 static void 457 wpi_dma_contig_free(struct wpi_dma_info *dma) 458 { 459 if (dma->map != NULL) { 460 if (dma->vaddr != NULL) { 461 bus_dmamap_unload(dma->tag, dma->map); 462 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 463 bus_dmamem_free(dma->tag, &dma->seg, 1); 464 dma->vaddr = NULL; 465 } 466 bus_dmamap_destroy(dma->tag, dma->map); 467 dma->map = NULL; 468 } 469 } 470 471 /* 472 * Allocate a shared page between host and NIC. 473 */ 474 static int 475 wpi_alloc_shared(struct wpi_softc *sc) 476 { 477 int error; 478 /* must be aligned on a 4K-page boundary */ 479 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 480 (void **)&sc->shared, sizeof (struct wpi_shared), 481 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 482 if (error != 0) 483 aprint_error( 484 "%s: could not allocate shared area DMA memory\n", 485 sc->sc_dev.dv_xname); 486 487 return error; 488 } 489 490 static void 491 wpi_free_shared(struct wpi_softc *sc) 492 { 493 wpi_dma_contig_free(&sc->shared_dma); 494 } 495 496 /* 497 * Allocate DMA-safe memory for firmware transfer. 498 */ 499 static int 500 wpi_alloc_fwmem(struct wpi_softc *sc) 501 { 502 int error; 503 /* allocate enough contiguous space to store text and data */ 504 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 505 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 506 BUS_DMA_NOWAIT); 507 508 if (error != 0) 509 aprint_error( 510 "%s: could not allocate firmware transfer area" 511 "DMA memory\n", sc->sc_dev.dv_xname); 512 return error; 513 } 514 515 static void 516 wpi_free_fwmem(struct wpi_softc *sc) 517 { 518 wpi_dma_contig_free(&sc->fw_dma); 519 } 520 521 522 static struct wpi_rbuf * 523 wpi_alloc_rbuf(struct wpi_softc *sc) 524 { 525 struct wpi_rbuf *rbuf; 526 527 rbuf = SLIST_FIRST(&sc->rxq.freelist); 528 if (rbuf == NULL) 529 return NULL; 530 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 531 sc->rxq.nb_free_entries --; 532 533 return rbuf; 534 } 535 536 /* 537 * This is called automatically by the network stack when the mbuf to which our 538 * Rx buffer is attached is freed. 539 */ 540 static void 541 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 542 { 543 struct wpi_rbuf *rbuf = arg; 544 struct wpi_softc *sc = rbuf->sc; 545 int s; 546 547 /* put the buffer back in the free list */ 548 549 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 550 sc->rxq.nb_free_entries ++; 551 552 if (__predict_true(m != NULL)) { 553 s = splvm(); 554 pool_cache_put(&mbpool_cache, m); 555 splx(s); 556 } 557 } 558 559 static int 560 wpi_alloc_rpool(struct wpi_softc *sc) 561 { 562 struct wpi_rx_ring *ring = &sc->rxq; 563 struct wpi_rbuf *rbuf; 564 int i, error; 565 566 /* allocate a big chunk of DMA'able memory.. */ 567 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 568 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 569 if (error != 0) { 570 aprint_normal("%s: could not allocate Rx buffers DMA memory\n", 571 sc->sc_dev.dv_xname); 572 return error; 573 } 574 575 /* ..and split it into 3KB chunks */ 576 SLIST_INIT(&ring->freelist); 577 for (i = 0; i < WPI_RBUF_COUNT; i++) { 578 rbuf = &ring->rbuf[i]; 579 rbuf->sc = sc; /* backpointer for callbacks */ 580 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 581 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 582 583 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 584 } 585 586 ring->nb_free_entries = WPI_RBUF_COUNT; 587 return 0; 588 } 589 590 static void 591 wpi_free_rpool(struct wpi_softc *sc) 592 { 593 wpi_dma_contig_free(&sc->rxq.buf_dma); 594 } 595 596 static int 597 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 598 { 599 struct wpi_rx_data *data; 600 struct wpi_rbuf *rbuf; 601 int i, error; 602 603 ring->cur = 0; 604 605 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 606 (void **)&ring->desc, 607 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 608 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 609 if (error != 0) { 610 aprint_error("%s: could not allocate rx ring DMA memory\n", 611 sc->sc_dev.dv_xname); 612 goto fail; 613 } 614 615 /* 616 * Setup Rx buffers. 617 */ 618 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 619 data = &ring->data[i]; 620 621 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 622 if (data->m == NULL) { 623 aprint_error("%s: could not allocate rx mbuf\n", 624 sc->sc_dev.dv_xname); 625 error = ENOMEM; 626 goto fail; 627 } 628 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 629 m_freem(data->m); 630 data->m = NULL; 631 aprint_error("%s: could not allocate rx cluster\n", 632 sc->sc_dev.dv_xname); 633 error = ENOMEM; 634 goto fail; 635 } 636 /* attach Rx buffer to mbuf */ 637 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 638 rbuf); 639 data->m->m_flags |= M_EXT_RW; 640 641 ring->desc[i] = htole32(rbuf->paddr); 642 } 643 644 return 0; 645 646 fail: wpi_free_rx_ring(sc, ring); 647 return error; 648 } 649 650 static void 651 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 652 { 653 int ntries; 654 655 wpi_mem_lock(sc); 656 657 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 658 for (ntries = 0; ntries < 100; ntries++) { 659 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 660 break; 661 DELAY(10); 662 } 663 #ifdef WPI_DEBUG 664 if (ntries == 100 && wpi_debug > 0) 665 aprint_error("%s: timeout resetting Rx ring\n", 666 sc->sc_dev.dv_xname); 667 #endif 668 wpi_mem_unlock(sc); 669 670 ring->cur = 0; 671 } 672 673 static void 674 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 675 { 676 int i; 677 678 wpi_dma_contig_free(&ring->desc_dma); 679 680 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 681 if (ring->data[i].m != NULL) 682 m_freem(ring->data[i].m); 683 } 684 } 685 686 static int 687 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 688 int qid) 689 { 690 struct wpi_tx_data *data; 691 int i, error; 692 693 ring->qid = qid; 694 ring->count = count; 695 ring->queued = 0; 696 ring->cur = 0; 697 698 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 699 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 700 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 701 if (error != 0) { 702 aprint_error("%s: could not allocate tx ring DMA memory\n", 703 sc->sc_dev.dv_xname); 704 goto fail; 705 } 706 707 /* update shared page with ring's base address */ 708 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 709 710 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 711 (void **)&ring->cmd, 712 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 713 if (error != 0) { 714 aprint_error("%s: could not allocate tx cmd DMA memory\n", 715 sc->sc_dev.dv_xname); 716 goto fail; 717 } 718 719 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 720 M_NOWAIT); 721 if (ring->data == NULL) { 722 aprint_error("%s: could not allocate tx data slots\n", 723 sc->sc_dev.dv_xname); 724 goto fail; 725 } 726 727 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 728 729 for (i = 0; i < count; i++) { 730 data = &ring->data[i]; 731 732 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 733 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 734 &data->map); 735 if (error != 0) { 736 aprint_error("%s: could not create tx buf DMA map\n", 737 sc->sc_dev.dv_xname); 738 goto fail; 739 } 740 } 741 742 return 0; 743 744 fail: wpi_free_tx_ring(sc, ring); 745 return error; 746 } 747 748 static void 749 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 750 { 751 struct wpi_tx_data *data; 752 int i, ntries; 753 754 wpi_mem_lock(sc); 755 756 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 757 for (ntries = 0; ntries < 100; ntries++) { 758 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 759 break; 760 DELAY(10); 761 } 762 #ifdef WPI_DEBUG 763 if (ntries == 100 && wpi_debug > 0) { 764 aprint_error("%s: timeout resetting Tx ring %d\n", 765 sc->sc_dev.dv_xname, ring->qid); 766 } 767 #endif 768 wpi_mem_unlock(sc); 769 770 for (i = 0; i < ring->count; i++) { 771 data = &ring->data[i]; 772 773 if (data->m != NULL) { 774 bus_dmamap_unload(sc->sc_dmat, data->map); 775 m_freem(data->m); 776 data->m = NULL; 777 } 778 } 779 780 ring->queued = 0; 781 ring->cur = 0; 782 } 783 784 static void 785 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 786 { 787 struct wpi_tx_data *data; 788 int i; 789 790 wpi_dma_contig_free(&ring->desc_dma); 791 wpi_dma_contig_free(&ring->cmd_dma); 792 793 if (ring->data != NULL) { 794 for (i = 0; i < ring->count; i++) { 795 data = &ring->data[i]; 796 797 if (data->m != NULL) { 798 bus_dmamap_unload(sc->sc_dmat, data->map); 799 m_freem(data->m); 800 } 801 } 802 free(ring->data, M_DEVBUF); 803 } 804 } 805 806 /*ARGUSED*/ 807 static struct ieee80211_node * 808 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 809 { 810 struct wpi_node *wn; 811 812 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 813 814 if (wn != NULL) 815 memset(wn, 0, sizeof (struct wpi_node)); 816 return (struct ieee80211_node *)wn; 817 } 818 819 static void 820 wpi_newassoc(struct ieee80211_node *ni, int isnew) 821 { 822 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 823 int i; 824 825 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 826 827 /* set rate to some reasonable initial value */ 828 for (i = ni->ni_rates.rs_nrates - 1; 829 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 830 i--); 831 ni->ni_txrate = i; 832 } 833 834 static int 835 wpi_media_change(struct ifnet *ifp) 836 { 837 int error; 838 839 error = ieee80211_media_change(ifp); 840 if (error != ENETRESET) 841 return error; 842 843 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 844 wpi_init(ifp); 845 846 return 0; 847 } 848 849 static int 850 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 851 { 852 struct ifnet *ifp = ic->ic_ifp; 853 struct wpi_softc *sc = ifp->if_softc; 854 struct ieee80211_node *ni; 855 int error; 856 857 callout_stop(&sc->calib_to); 858 859 switch (nstate) { 860 case IEEE80211_S_SCAN: 861 862 if (sc->is_scanning) 863 break; 864 865 sc->is_scanning = true; 866 ieee80211_node_table_reset(&ic->ic_scan); 867 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 868 869 /* make the link LED blink while we're scanning */ 870 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 871 872 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 873 aprint_error("%s: could not initiate scan\n", 874 sc->sc_dev.dv_xname); 875 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 876 return error; 877 } 878 879 ic->ic_state = nstate; 880 return 0; 881 882 case IEEE80211_S_ASSOC: 883 if (ic->ic_state != IEEE80211_S_RUN) 884 break; 885 /* FALLTHROUGH */ 886 case IEEE80211_S_AUTH: 887 sc->config.associd = 0; 888 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 889 if ((error = wpi_auth(sc)) != 0) { 890 aprint_error("%s: could not send authentication request\n", 891 sc->sc_dev.dv_xname); 892 return error; 893 } 894 break; 895 896 case IEEE80211_S_RUN: 897 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 898 /* link LED blinks while monitoring */ 899 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 900 break; 901 } 902 903 ni = ic->ic_bss; 904 905 if (ic->ic_opmode != IEEE80211_M_STA) { 906 (void) wpi_auth(sc); /* XXX */ 907 wpi_setup_beacon(sc, ni); 908 } 909 910 wpi_enable_tsf(sc, ni); 911 912 /* update adapter's configuration */ 913 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 914 /* short preamble/slot time are negotiated when associating */ 915 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 916 WPI_CONFIG_SHSLOT); 917 if (ic->ic_flags & IEEE80211_F_SHSLOT) 918 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 919 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 920 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 921 sc->config.filter |= htole32(WPI_FILTER_BSS); 922 if (ic->ic_opmode != IEEE80211_M_STA) 923 sc->config.filter |= htole32(WPI_FILTER_BEACON); 924 925 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 926 927 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 928 sc->config.flags)); 929 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 930 sizeof (struct wpi_config), 1); 931 if (error != 0) { 932 aprint_error("%s: could not update configuration\n", 933 sc->sc_dev.dv_xname); 934 return error; 935 } 936 937 /* configuration has changed, set Tx power accordingly */ 938 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 939 aprint_error("%s: could not set Tx power\n", 940 sc->sc_dev.dv_xname); 941 return error; 942 } 943 944 if (ic->ic_opmode == IEEE80211_M_STA) { 945 /* fake a join to init the tx rate */ 946 wpi_newassoc(ni, 1); 947 } 948 949 /* start periodic calibration timer */ 950 sc->calib_cnt = 0; 951 callout_schedule(&sc->calib_to, hz/2); 952 953 /* link LED always on while associated */ 954 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 955 break; 956 957 case IEEE80211_S_INIT: 958 sc->is_scanning = false; 959 break; 960 } 961 962 return sc->sc_newstate(ic, nstate, arg); 963 } 964 965 /* 966 * XXX: Hack to set the current channel to the value advertised in beacons or 967 * probe responses. Only used during AP detection. 968 * XXX: Duplicated from if_iwi.c 969 */ 970 static void 971 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 972 { 973 struct ieee80211_frame *wh; 974 uint8_t subtype; 975 uint8_t *frm, *efrm; 976 977 wh = mtod(m, struct ieee80211_frame *); 978 979 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 980 return; 981 982 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 983 984 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 985 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 986 return; 987 988 frm = (uint8_t *)(wh + 1); 989 efrm = mtod(m, uint8_t *) + m->m_len; 990 991 frm += 12; /* skip tstamp, bintval and capinfo fields */ 992 while (frm < efrm) { 993 if (*frm == IEEE80211_ELEMID_DSPARMS) 994 #if IEEE80211_CHAN_MAX < 255 995 if (frm[2] <= IEEE80211_CHAN_MAX) 996 #endif 997 ic->ic_curchan = &ic->ic_channels[frm[2]]; 998 999 frm += frm[1] + 2; 1000 } 1001 } 1002 1003 /* 1004 * Grab exclusive access to NIC memory. 1005 */ 1006 static void 1007 wpi_mem_lock(struct wpi_softc *sc) 1008 { 1009 uint32_t tmp; 1010 int ntries; 1011 1012 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1013 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1014 1015 /* spin until we actually get the lock */ 1016 for (ntries = 0; ntries < 1000; ntries++) { 1017 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1018 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1019 break; 1020 DELAY(10); 1021 } 1022 if (ntries == 1000) 1023 aprint_error_dev(&sc->sc_dev, "could not lock memory\n"); 1024 } 1025 1026 /* 1027 * Release lock on NIC memory. 1028 */ 1029 static void 1030 wpi_mem_unlock(struct wpi_softc *sc) 1031 { 1032 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1033 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1034 } 1035 1036 static uint32_t 1037 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1038 { 1039 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1040 return WPI_READ(sc, WPI_READ_MEM_DATA); 1041 } 1042 1043 static void 1044 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1045 { 1046 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1047 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1048 } 1049 1050 static void 1051 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1052 const uint32_t *data, int wlen) 1053 { 1054 for (; wlen > 0; wlen--, data++, addr += 4) 1055 wpi_mem_write(sc, addr, *data); 1056 } 1057 1058 1059 /* 1060 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1061 * instead of using the traditional bit-bang method. 1062 */ 1063 static int 1064 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1065 { 1066 uint8_t *out = data; 1067 uint32_t val; 1068 int ntries; 1069 1070 wpi_mem_lock(sc); 1071 for (; len > 0; len -= 2, addr++) { 1072 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1073 1074 for (ntries = 0; ntries < 10; ntries++) { 1075 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1076 WPI_EEPROM_READY) 1077 break; 1078 DELAY(5); 1079 } 1080 if (ntries == 10) { 1081 aprint_error("%s: could not read EEPROM\n", 1082 sc->sc_dev.dv_xname); 1083 return ETIMEDOUT; 1084 } 1085 *out++ = val >> 16; 1086 if (len > 1) 1087 *out++ = val >> 24; 1088 } 1089 wpi_mem_unlock(sc); 1090 1091 return 0; 1092 } 1093 1094 /* 1095 * The firmware boot code is small and is intended to be copied directly into 1096 * the NIC internal memory. 1097 */ 1098 int 1099 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1100 { 1101 int ntries; 1102 1103 size /= sizeof (uint32_t); 1104 1105 wpi_mem_lock(sc); 1106 1107 /* copy microcode image into NIC memory */ 1108 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1109 (const uint32_t *)ucode, size); 1110 1111 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1112 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1113 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1114 1115 /* run microcode */ 1116 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1117 1118 /* wait for transfer to complete */ 1119 for (ntries = 0; ntries < 1000; ntries++) { 1120 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1121 break; 1122 DELAY(10); 1123 } 1124 if (ntries == 1000) { 1125 wpi_mem_unlock(sc); 1126 printf("%s: could not load boot firmware\n", 1127 sc->sc_dev.dv_xname); 1128 return ETIMEDOUT; 1129 } 1130 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1131 1132 wpi_mem_unlock(sc); 1133 1134 return 0; 1135 } 1136 1137 static int 1138 wpi_load_firmware(struct wpi_softc *sc) 1139 { 1140 struct wpi_dma_info *dma = &sc->fw_dma; 1141 struct wpi_firmware_hdr hdr; 1142 const uint8_t *init_text, *init_data, *main_text, *main_data; 1143 const uint8_t *boot_text; 1144 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1145 uint32_t boot_textsz; 1146 firmware_handle_t fw; 1147 u_char *dfw; 1148 size_t size; 1149 int error; 1150 1151 /* load firmware image from disk */ 1152 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1153 aprint_error("%s: could not read firmware file\n", 1154 sc->sc_dev.dv_xname); 1155 goto fail1; 1156 } 1157 1158 size = firmware_get_size(fw); 1159 1160 /* extract firmware header information */ 1161 if (size < sizeof (struct wpi_firmware_hdr)) { 1162 aprint_error("%s: truncated firmware header: %zu bytes\n", 1163 sc->sc_dev.dv_xname, size); 1164 error = EINVAL; 1165 goto fail2; 1166 } 1167 1168 if ((error = firmware_read(fw, 0, &hdr, 1169 sizeof (struct wpi_firmware_hdr))) != 0) { 1170 aprint_error("%s: can't get firmware header\n", 1171 sc->sc_dev.dv_xname); 1172 goto fail2; 1173 } 1174 1175 main_textsz = le32toh(hdr.main_textsz); 1176 main_datasz = le32toh(hdr.main_datasz); 1177 init_textsz = le32toh(hdr.init_textsz); 1178 init_datasz = le32toh(hdr.init_datasz); 1179 boot_textsz = le32toh(hdr.boot_textsz); 1180 1181 /* sanity-check firmware segments sizes */ 1182 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1183 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1184 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1185 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1186 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1187 (boot_textsz & 3) != 0) { 1188 printf("%s: invalid firmware header\n", sc->sc_dev.dv_xname); 1189 error = EINVAL; 1190 goto fail2; 1191 } 1192 1193 /* check that all firmware segments are present */ 1194 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1195 main_datasz + init_textsz + init_datasz + boot_textsz) { 1196 aprint_error("%s: firmware file too short: %zu bytes\n", 1197 sc->sc_dev.dv_xname, size); 1198 error = EINVAL; 1199 goto fail2; 1200 } 1201 1202 dfw = firmware_malloc(size); 1203 if (dfw == NULL) { 1204 aprint_error("%s: not enough memory to stock firmware\n", 1205 sc->sc_dev.dv_xname); 1206 error = ENOMEM; 1207 goto fail2; 1208 } 1209 1210 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1211 aprint_error("%s: can't get firmware\n", 1212 sc->sc_dev.dv_xname); 1213 goto fail2; 1214 } 1215 1216 /* get pointers to firmware segments */ 1217 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1218 main_data = main_text + main_textsz; 1219 init_text = main_data + main_datasz; 1220 init_data = init_text + init_textsz; 1221 boot_text = init_data + init_datasz; 1222 1223 /* copy initialization images into pre-allocated DMA-safe memory */ 1224 memcpy(dma->vaddr, init_data, init_datasz); 1225 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1226 1227 /* tell adapter where to find initialization images */ 1228 wpi_mem_lock(sc); 1229 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1230 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1231 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1232 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1233 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1234 wpi_mem_unlock(sc); 1235 1236 /* load firmware boot code */ 1237 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1238 printf("%s: could not load boot firmware\n", 1239 sc->sc_dev.dv_xname); 1240 goto fail3; 1241 } 1242 1243 /* now press "execute" ;-) */ 1244 WPI_WRITE(sc, WPI_RESET, 0); 1245 1246 /* ..and wait at most one second for adapter to initialize */ 1247 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1248 /* this isn't what was supposed to happen.. */ 1249 aprint_error("%s: timeout waiting for adapter to initialize\n", 1250 sc->sc_dev.dv_xname); 1251 } 1252 1253 /* copy runtime images into pre-allocated DMA-safe memory */ 1254 memcpy(dma->vaddr, main_data, main_datasz); 1255 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1256 1257 /* tell adapter where to find runtime images */ 1258 wpi_mem_lock(sc); 1259 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1260 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1261 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1262 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1263 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1264 wpi_mem_unlock(sc); 1265 1266 /* wait at most one second for second alive notification */ 1267 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1268 /* this isn't what was supposed to happen.. */ 1269 printf("%s: timeout waiting for adapter to initialize\n", 1270 sc->sc_dev.dv_xname); 1271 } 1272 1273 1274 fail3: firmware_free(dfw,size); 1275 fail2: firmware_close(fw); 1276 fail1: return error; 1277 } 1278 1279 static void 1280 wpi_calib_timeout(void *arg) 1281 { 1282 struct wpi_softc *sc = arg; 1283 struct ieee80211com *ic = &sc->sc_ic; 1284 int temp, s; 1285 1286 /* automatic rate control triggered every 500ms */ 1287 if (ic->ic_fixed_rate == -1) { 1288 s = splnet(); 1289 if (ic->ic_opmode == IEEE80211_M_STA) 1290 wpi_iter_func(sc, ic->ic_bss); 1291 else 1292 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1293 splx(s); 1294 } 1295 1296 /* update sensor data */ 1297 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1298 1299 /* automatic power calibration every 60s */ 1300 if (++sc->calib_cnt >= 120) { 1301 wpi_power_calibration(sc, temp); 1302 sc->calib_cnt = 0; 1303 } 1304 1305 callout_schedule(&sc->calib_to, hz/2); 1306 } 1307 1308 static void 1309 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1310 { 1311 struct wpi_softc *sc = arg; 1312 struct wpi_node *wn = (struct wpi_node *)ni; 1313 1314 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1315 } 1316 1317 /* 1318 * This function is called periodically (every 60 seconds) to adjust output 1319 * power to temperature changes. 1320 */ 1321 void 1322 wpi_power_calibration(struct wpi_softc *sc, int temp) 1323 { 1324 /* sanity-check read value */ 1325 if (temp < -260 || temp > 25) { 1326 /* this can't be correct, ignore */ 1327 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1328 return; 1329 } 1330 1331 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1332 1333 /* adjust Tx power if need be */ 1334 if (abs(temp - sc->temp) <= 6) 1335 return; 1336 1337 sc->temp = temp; 1338 1339 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1340 /* just warn, too bad for the automatic calibration... */ 1341 aprint_error("%s: could not adjust Tx power\n", 1342 sc->sc_dev.dv_xname); 1343 } 1344 } 1345 1346 static void 1347 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1348 struct wpi_rx_data *data) 1349 { 1350 struct ieee80211com *ic = &sc->sc_ic; 1351 struct ifnet *ifp = ic->ic_ifp; 1352 struct wpi_rx_ring *ring = &sc->rxq; 1353 struct wpi_rx_stat *stat; 1354 struct wpi_rx_head *head; 1355 struct wpi_rx_tail *tail; 1356 struct wpi_rbuf *rbuf; 1357 struct ieee80211_frame *wh; 1358 struct ieee80211_node *ni; 1359 struct mbuf *m, *mnew; 1360 int data_off ; 1361 1362 stat = (struct wpi_rx_stat *)(desc + 1); 1363 1364 if (stat->len > WPI_STAT_MAXLEN) { 1365 aprint_error("%s: invalid rx statistic header\n", 1366 sc->sc_dev.dv_xname); 1367 ifp->if_ierrors++; 1368 return; 1369 } 1370 1371 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1372 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1373 1374 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1375 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1376 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1377 le64toh(tail->tstamp))); 1378 1379 /* 1380 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1381 * to radiotap in monitor mode). 1382 */ 1383 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1384 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1385 ifp->if_ierrors++; 1386 return; 1387 } 1388 1389 /* Compute where are the useful datas */ 1390 data_off = (char*)(head + 1) - mtod(data->m, char*); 1391 1392 /* 1393 * If the number of free entry is too low 1394 * just dup the data->m socket and reuse the same rbuf entry 1395 */ 1396 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1397 1398 /* Prepare the mbuf for the m_dup */ 1399 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1400 data->m->m_data = (char*) data->m->m_data + data_off; 1401 1402 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1403 1404 /* Restore the m_data pointer for future use */ 1405 data->m->m_data = (char*) data->m->m_data - data_off; 1406 1407 if (m == NULL) { 1408 ifp->if_ierrors++; 1409 return; 1410 } 1411 } else { 1412 1413 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1414 if (mnew == NULL) { 1415 ifp->if_ierrors++; 1416 return; 1417 } 1418 1419 rbuf = wpi_alloc_rbuf(sc); 1420 KASSERT(rbuf != NULL); 1421 1422 /* attach Rx buffer to mbuf */ 1423 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1424 rbuf); 1425 mnew->m_flags |= M_EXT_RW; 1426 1427 m = data->m; 1428 data->m = mnew; 1429 1430 /* update Rx descriptor */ 1431 ring->desc[ring->cur] = htole32(rbuf->paddr); 1432 1433 m->m_data = (char*)m->m_data + data_off; 1434 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1435 } 1436 1437 /* finalize mbuf */ 1438 m->m_pkthdr.rcvif = ifp; 1439 1440 if (ic->ic_state == IEEE80211_S_SCAN) 1441 wpi_fix_channel(ic, m); 1442 1443 #if NBPFILTER > 0 1444 if (sc->sc_drvbpf != NULL) { 1445 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1446 1447 tap->wr_flags = 0; 1448 tap->wr_chan_freq = 1449 htole16(ic->ic_channels[head->chan].ic_freq); 1450 tap->wr_chan_flags = 1451 htole16(ic->ic_channels[head->chan].ic_flags); 1452 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1453 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1454 tap->wr_tsft = tail->tstamp; 1455 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1456 switch (head->rate) { 1457 /* CCK rates */ 1458 case 10: tap->wr_rate = 2; break; 1459 case 20: tap->wr_rate = 4; break; 1460 case 55: tap->wr_rate = 11; break; 1461 case 110: tap->wr_rate = 22; break; 1462 /* OFDM rates */ 1463 case 0xd: tap->wr_rate = 12; break; 1464 case 0xf: tap->wr_rate = 18; break; 1465 case 0x5: tap->wr_rate = 24; break; 1466 case 0x7: tap->wr_rate = 36; break; 1467 case 0x9: tap->wr_rate = 48; break; 1468 case 0xb: tap->wr_rate = 72; break; 1469 case 0x1: tap->wr_rate = 96; break; 1470 case 0x3: tap->wr_rate = 108; break; 1471 /* unknown rate: should not happen */ 1472 default: tap->wr_rate = 0; 1473 } 1474 if (le16toh(head->flags) & 0x4) 1475 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1476 1477 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1478 } 1479 #endif 1480 1481 /* grab a reference to the source node */ 1482 wh = mtod(m, struct ieee80211_frame *); 1483 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1484 1485 /* send the frame to the 802.11 layer */ 1486 ieee80211_input(ic, m, ni, stat->rssi, 0); 1487 1488 /* release node reference */ 1489 ieee80211_free_node(ni); 1490 } 1491 1492 static void 1493 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1494 { 1495 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1496 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1497 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1498 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1499 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1500 1501 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1502 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1503 stat->nkill, stat->rate, le32toh(stat->duration), 1504 le32toh(stat->status))); 1505 1506 /* 1507 * Update rate control statistics for the node. 1508 * XXX we should not count mgmt frames since they're always sent at 1509 * the lowest available bit-rate. 1510 */ 1511 wn->amn.amn_txcnt++; 1512 if (stat->ntries > 0) { 1513 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1514 wn->amn.amn_retrycnt++; 1515 } 1516 1517 if ((le32toh(stat->status) & 0xff) != 1) 1518 ifp->if_oerrors++; 1519 else 1520 ifp->if_opackets++; 1521 1522 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1523 m_freem(txdata->m); 1524 txdata->m = NULL; 1525 ieee80211_free_node(txdata->ni); 1526 txdata->ni = NULL; 1527 1528 ring->queued--; 1529 1530 sc->sc_tx_timer = 0; 1531 ifp->if_flags &= ~IFF_OACTIVE; 1532 wpi_start(ifp); 1533 } 1534 1535 static void 1536 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1537 { 1538 struct wpi_tx_ring *ring = &sc->cmdq; 1539 struct wpi_tx_data *data; 1540 1541 if ((desc->qid & 7) != 4) 1542 return; /* not a command ack */ 1543 1544 data = &ring->data[desc->idx]; 1545 1546 /* if the command was mapped in a mbuf, free it */ 1547 if (data->m != NULL) { 1548 bus_dmamap_unload(sc->sc_dmat, data->map); 1549 m_freem(data->m); 1550 data->m = NULL; 1551 } 1552 1553 wakeup(&ring->cmd[desc->idx]); 1554 } 1555 1556 static void 1557 wpi_notif_intr(struct wpi_softc *sc) 1558 { 1559 struct ieee80211com *ic = &sc->sc_ic; 1560 struct ifnet *ifp = ic->ic_ifp; 1561 struct wpi_rx_desc *desc; 1562 struct wpi_rx_data *data; 1563 uint32_t hw; 1564 1565 hw = le32toh(sc->shared->next); 1566 while (sc->rxq.cur != hw) { 1567 data = &sc->rxq.data[sc->rxq.cur]; 1568 1569 desc = mtod(data->m, struct wpi_rx_desc *); 1570 1571 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1572 "len=%d\n", desc->qid, desc->idx, desc->flags, 1573 desc->type, le32toh(desc->len))); 1574 1575 if (!(desc->qid & 0x80)) /* reply to a command */ 1576 wpi_cmd_intr(sc, desc); 1577 1578 switch (desc->type) { 1579 case WPI_RX_DONE: 1580 /* a 802.11 frame was received */ 1581 wpi_rx_intr(sc, desc, data); 1582 break; 1583 1584 case WPI_TX_DONE: 1585 /* a 802.11 frame has been transmitted */ 1586 wpi_tx_intr(sc, desc); 1587 break; 1588 1589 case WPI_UC_READY: 1590 { 1591 struct wpi_ucode_info *uc = 1592 (struct wpi_ucode_info *)(desc + 1); 1593 1594 /* the microcontroller is ready */ 1595 DPRINTF(("microcode alive notification version %x " 1596 "alive %x\n", le32toh(uc->version), 1597 le32toh(uc->valid))); 1598 1599 if (le32toh(uc->valid) != 1) { 1600 aprint_error("%s: microcontroller " 1601 "initialization failed\n", 1602 sc->sc_dev.dv_xname); 1603 } 1604 break; 1605 } 1606 case WPI_STATE_CHANGED: 1607 { 1608 uint32_t *status = (uint32_t *)(desc + 1); 1609 1610 /* enabled/disabled notification */ 1611 DPRINTF(("state changed to %x\n", le32toh(*status))); 1612 1613 if (le32toh(*status) & 1) { 1614 /* the radio button has to be pushed */ 1615 aprint_error("%s: Radio transmitter is off\n", 1616 sc->sc_dev.dv_xname); 1617 /* turn the interface down */ 1618 ifp->if_flags &= ~IFF_UP; 1619 wpi_stop(ifp, 1); 1620 return; /* no further processing */ 1621 } 1622 break; 1623 } 1624 case WPI_START_SCAN: 1625 { 1626 struct wpi_start_scan *scan = 1627 (struct wpi_start_scan *)(desc + 1); 1628 1629 DPRINTFN(2, ("scanning channel %d status %x\n", 1630 scan->chan, le32toh(scan->status))); 1631 1632 /* fix current channel */ 1633 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1634 break; 1635 } 1636 case WPI_STOP_SCAN: 1637 { 1638 struct wpi_stop_scan *scan = 1639 (struct wpi_stop_scan *)(desc + 1); 1640 1641 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1642 scan->nchan, scan->status, scan->chan)); 1643 1644 if (scan->status == 1 && scan->chan <= 14) { 1645 /* 1646 * We just finished scanning 802.11g channels, 1647 * start scanning 802.11a ones. 1648 */ 1649 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1650 break; 1651 } 1652 sc->is_scanning = false; 1653 ieee80211_end_scan(ic); 1654 break; 1655 } 1656 } 1657 1658 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1659 } 1660 1661 /* tell the firmware what we have processed */ 1662 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1663 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1664 } 1665 1666 static int 1667 wpi_intr(void *arg) 1668 { 1669 struct wpi_softc *sc = arg; 1670 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1671 uint32_t r; 1672 1673 r = WPI_READ(sc, WPI_INTR); 1674 if (r == 0 || r == 0xffffffff) 1675 return 0; /* not for us */ 1676 1677 DPRINTFN(5, ("interrupt reg %x\n", r)); 1678 1679 /* disable interrupts */ 1680 WPI_WRITE(sc, WPI_MASK, 0); 1681 /* ack interrupts */ 1682 WPI_WRITE(sc, WPI_INTR, r); 1683 1684 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1685 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1686 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1687 wpi_stop(sc->sc_ic.ic_ifp, 1); 1688 return 1; 1689 } 1690 1691 if (r & WPI_RX_INTR) 1692 wpi_notif_intr(sc); 1693 1694 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1695 wakeup(sc); 1696 1697 /* re-enable interrupts */ 1698 if (ifp->if_flags & IFF_UP) 1699 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1700 1701 return 1; 1702 } 1703 1704 static uint8_t 1705 wpi_plcp_signal(int rate) 1706 { 1707 switch (rate) { 1708 /* CCK rates (returned values are device-dependent) */ 1709 case 2: return 10; 1710 case 4: return 20; 1711 case 11: return 55; 1712 case 22: return 110; 1713 1714 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1715 /* R1-R4, (u)ral is R4-R1 */ 1716 case 12: return 0xd; 1717 case 18: return 0xf; 1718 case 24: return 0x5; 1719 case 36: return 0x7; 1720 case 48: return 0x9; 1721 case 72: return 0xb; 1722 case 96: return 0x1; 1723 case 108: return 0x3; 1724 1725 /* unsupported rates (should not get there) */ 1726 default: return 0; 1727 } 1728 } 1729 1730 /* quickly determine if a given rate is CCK or OFDM */ 1731 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1732 1733 static int 1734 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1735 int ac) 1736 { 1737 struct ieee80211com *ic = &sc->sc_ic; 1738 struct wpi_tx_ring *ring = &sc->txq[ac]; 1739 struct wpi_tx_desc *desc; 1740 struct wpi_tx_data *data; 1741 struct wpi_tx_cmd *cmd; 1742 struct wpi_cmd_data *tx; 1743 struct ieee80211_frame *wh; 1744 struct ieee80211_key *k; 1745 const struct chanAccParams *cap; 1746 struct mbuf *mnew; 1747 int i, error, rate, hdrlen, noack = 0; 1748 1749 desc = &ring->desc[ring->cur]; 1750 data = &ring->data[ring->cur]; 1751 1752 wh = mtod(m0, struct ieee80211_frame *); 1753 1754 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1755 cap = &ic->ic_wme.wme_chanParams; 1756 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1757 } 1758 1759 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1760 k = ieee80211_crypto_encap(ic, ni, m0); 1761 if (k == NULL) { 1762 m_freem(m0); 1763 return ENOBUFS; 1764 } 1765 1766 /* packet header may have moved, reset our local pointer */ 1767 wh = mtod(m0, struct ieee80211_frame *); 1768 } 1769 1770 hdrlen = ieee80211_anyhdrsize(wh); 1771 1772 /* pickup a rate */ 1773 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1774 IEEE80211_FC0_TYPE_MGT) { 1775 /* mgmt frames are sent at the lowest available bit-rate */ 1776 rate = ni->ni_rates.rs_rates[0]; 1777 } else { 1778 if (ic->ic_fixed_rate != -1) { 1779 rate = ic->ic_sup_rates[ic->ic_curmode]. 1780 rs_rates[ic->ic_fixed_rate]; 1781 } else 1782 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1783 } 1784 rate &= IEEE80211_RATE_VAL; 1785 1786 1787 #if NBPFILTER > 0 1788 if (sc->sc_drvbpf != NULL) { 1789 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1790 1791 tap->wt_flags = 0; 1792 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1793 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1794 tap->wt_rate = rate; 1795 tap->wt_hwqueue = ac; 1796 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1797 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1798 1799 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1800 } 1801 #endif 1802 1803 cmd = &ring->cmd[ring->cur]; 1804 cmd->code = WPI_CMD_TX_DATA; 1805 cmd->flags = 0; 1806 cmd->qid = ring->qid; 1807 cmd->idx = ring->cur; 1808 1809 tx = (struct wpi_cmd_data *)cmd->data; 1810 tx->flags = 0; 1811 1812 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1813 tx->flags |= htole32(WPI_TX_NEED_ACK); 1814 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1815 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1816 1817 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1818 1819 /* retrieve destination node's id */ 1820 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1821 WPI_ID_BSS; 1822 1823 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1824 IEEE80211_FC0_TYPE_MGT) { 1825 /* tell h/w to set timestamp in probe responses */ 1826 if ((wh->i_fc[0] & 1827 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1828 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1829 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1830 1831 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1832 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1833 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1834 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1835 tx->timeout = htole16(3); 1836 else 1837 tx->timeout = htole16(2); 1838 } else 1839 tx->timeout = htole16(0); 1840 1841 tx->rate = wpi_plcp_signal(rate); 1842 1843 /* be very persistant at sending frames out */ 1844 tx->rts_ntries = 7; 1845 tx->data_ntries = 15; 1846 1847 tx->ofdm_mask = 0xff; 1848 tx->cck_mask = 0xf; 1849 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1850 1851 tx->len = htole16(m0->m_pkthdr.len); 1852 1853 /* save and trim IEEE802.11 header */ 1854 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 1855 m_adj(m0, hdrlen); 1856 1857 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1858 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1859 if (error != 0 && error != EFBIG) { 1860 aprint_error("%s: could not map mbuf (error %d)\n", 1861 sc->sc_dev.dv_xname, error); 1862 m_freem(m0); 1863 return error; 1864 } 1865 if (error != 0) { 1866 /* too many fragments, linearize */ 1867 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1868 if (mnew == NULL) { 1869 m_freem(m0); 1870 return ENOMEM; 1871 } 1872 1873 M_COPY_PKTHDR(mnew, m0); 1874 if (m0->m_pkthdr.len > MHLEN) { 1875 MCLGET(mnew, M_DONTWAIT); 1876 if (!(mnew->m_flags & M_EXT)) { 1877 m_freem(m0); 1878 m_freem(mnew); 1879 return ENOMEM; 1880 } 1881 } 1882 1883 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1884 m_freem(m0); 1885 mnew->m_len = mnew->m_pkthdr.len; 1886 m0 = mnew; 1887 1888 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1889 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1890 if (error != 0) { 1891 aprint_error("%s: could not map mbuf (error %d)\n", 1892 sc->sc_dev.dv_xname, error); 1893 m_freem(m0); 1894 return error; 1895 } 1896 } 1897 1898 data->m = m0; 1899 data->ni = ni; 1900 1901 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1902 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1903 1904 /* first scatter/gather segment is used by the tx data command */ 1905 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1906 (1 + data->map->dm_nsegs) << 24); 1907 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1908 ring->cur * sizeof (struct wpi_tx_cmd)); 1909 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 1910 ((hdrlen + 3) & ~3)); 1911 1912 for (i = 1; i <= data->map->dm_nsegs; i++) { 1913 desc->segs[i].addr = 1914 htole32(data->map->dm_segs[i - 1].ds_addr); 1915 desc->segs[i].len = 1916 htole32(data->map->dm_segs[i - 1].ds_len); 1917 } 1918 1919 ring->queued++; 1920 1921 /* kick ring */ 1922 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1923 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1924 1925 return 0; 1926 } 1927 1928 static void 1929 wpi_start(struct ifnet *ifp) 1930 { 1931 struct wpi_softc *sc = ifp->if_softc; 1932 struct ieee80211com *ic = &sc->sc_ic; 1933 struct ieee80211_node *ni; 1934 struct ether_header *eh; 1935 struct mbuf *m0; 1936 int ac; 1937 1938 /* 1939 * net80211 may still try to send management frames even if the 1940 * IFF_RUNNING flag is not set... 1941 */ 1942 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1943 return; 1944 1945 for (;;) { 1946 IF_DEQUEUE(&ic->ic_mgtq, m0); 1947 if (m0 != NULL) { 1948 1949 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1950 m0->m_pkthdr.rcvif = NULL; 1951 1952 /* management frames go into ring 0 */ 1953 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1954 ifp->if_oerrors++; 1955 continue; 1956 } 1957 #if NBPFILTER > 0 1958 if (ic->ic_rawbpf != NULL) 1959 bpf_mtap(ic->ic_rawbpf, m0); 1960 #endif 1961 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1962 ifp->if_oerrors++; 1963 break; 1964 } 1965 } else { 1966 if (ic->ic_state != IEEE80211_S_RUN) 1967 break; 1968 IFQ_POLL(&ifp->if_snd, m0); 1969 if (m0 == NULL) 1970 break; 1971 1972 if (m0->m_len < sizeof (*eh) && 1973 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 1974 ifp->if_oerrors++; 1975 continue; 1976 } 1977 eh = mtod(m0, struct ether_header *); 1978 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1979 if (ni == NULL) { 1980 m_freem(m0); 1981 ifp->if_oerrors++; 1982 continue; 1983 } 1984 1985 /* classify mbuf so we can find which tx ring to use */ 1986 if (ieee80211_classify(ic, m0, ni) != 0) { 1987 m_freem(m0); 1988 ieee80211_free_node(ni); 1989 ifp->if_oerrors++; 1990 continue; 1991 } 1992 1993 /* no QoS encapsulation for EAPOL frames */ 1994 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 1995 M_WME_GETAC(m0) : WME_AC_BE; 1996 1997 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 1998 /* there is no place left in this ring */ 1999 ifp->if_flags |= IFF_OACTIVE; 2000 break; 2001 } 2002 IFQ_DEQUEUE(&ifp->if_snd, m0); 2003 #if NBPFILTER > 0 2004 if (ifp->if_bpf != NULL) 2005 bpf_mtap(ifp->if_bpf, m0); 2006 #endif 2007 m0 = ieee80211_encap(ic, m0, ni); 2008 if (m0 == NULL) { 2009 ieee80211_free_node(ni); 2010 ifp->if_oerrors++; 2011 continue; 2012 } 2013 #if NBPFILTER > 0 2014 if (ic->ic_rawbpf != NULL) 2015 bpf_mtap(ic->ic_rawbpf, m0); 2016 #endif 2017 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2018 ieee80211_free_node(ni); 2019 ifp->if_oerrors++; 2020 break; 2021 } 2022 } 2023 2024 sc->sc_tx_timer = 5; 2025 ifp->if_timer = 1; 2026 } 2027 } 2028 2029 static void 2030 wpi_watchdog(struct ifnet *ifp) 2031 { 2032 struct wpi_softc *sc = ifp->if_softc; 2033 2034 ifp->if_timer = 0; 2035 2036 if (sc->sc_tx_timer > 0) { 2037 if (--sc->sc_tx_timer == 0) { 2038 aprint_error("%s: device timeout\n", 2039 sc->sc_dev.dv_xname); 2040 ifp->if_oerrors++; 2041 ifp->if_flags &= ~IFF_UP; 2042 wpi_stop(ifp, 1); 2043 return; 2044 } 2045 ifp->if_timer = 1; 2046 } 2047 2048 ieee80211_watchdog(&sc->sc_ic); 2049 } 2050 2051 static int 2052 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2053 { 2054 #define IS_RUNNING(ifp) \ 2055 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2056 2057 struct wpi_softc *sc = ifp->if_softc; 2058 struct ieee80211com *ic = &sc->sc_ic; 2059 int s, error = 0; 2060 2061 s = splnet(); 2062 2063 switch (cmd) { 2064 case SIOCSIFFLAGS: 2065 if (ifp->if_flags & IFF_UP) { 2066 if (!(ifp->if_flags & IFF_RUNNING)) 2067 wpi_init(ifp); 2068 } else { 2069 if (ifp->if_flags & IFF_RUNNING) 2070 wpi_stop(ifp, 1); 2071 } 2072 break; 2073 2074 case SIOCADDMULTI: 2075 case SIOCDELMULTI: 2076 /* XXX no h/w multicast filter? --dyoung */ 2077 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2078 /* setup multicast filter, etc */ 2079 error = 0; 2080 } 2081 break; 2082 2083 default: 2084 error = ieee80211_ioctl(ic, cmd, data); 2085 } 2086 2087 if (error == ENETRESET) { 2088 if (IS_RUNNING(ifp) && 2089 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2090 wpi_init(ifp); 2091 error = 0; 2092 } 2093 2094 splx(s); 2095 return error; 2096 2097 #undef IS_RUNNING 2098 } 2099 2100 /* 2101 * Extract various information from EEPROM. 2102 */ 2103 static void 2104 wpi_read_eeprom(struct wpi_softc *sc) 2105 { 2106 struct ieee80211com *ic = &sc->sc_ic; 2107 char domain[4]; 2108 int i; 2109 2110 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2111 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2112 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2113 2114 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2115 sc->type)); 2116 2117 /* read and print regulatory domain */ 2118 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2119 aprint_normal(", %.4s", domain); 2120 2121 /* read and print MAC address */ 2122 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2123 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2124 2125 /* read the list of authorized channels */ 2126 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2127 wpi_read_eeprom_channels(sc, i); 2128 2129 /* read the list of power groups */ 2130 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2131 wpi_read_eeprom_group(sc, i); 2132 } 2133 2134 static void 2135 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2136 { 2137 struct ieee80211com *ic = &sc->sc_ic; 2138 const struct wpi_chan_band *band = &wpi_bands[n]; 2139 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2140 int chan, i; 2141 2142 wpi_read_prom_data(sc, band->addr, channels, 2143 band->nchan * sizeof (struct wpi_eeprom_chan)); 2144 2145 for (i = 0; i < band->nchan; i++) { 2146 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2147 continue; 2148 2149 chan = band->chan[i]; 2150 2151 if (n == 0) { /* 2GHz band */ 2152 ic->ic_channels[chan].ic_freq = 2153 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2154 ic->ic_channels[chan].ic_flags = 2155 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2156 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2157 2158 } else { /* 5GHz band */ 2159 /* 2160 * Some 3945abg adapters support channels 7, 8, 11 2161 * and 12 in the 2GHz *and* 5GHz bands. 2162 * Because of limitations in our net80211(9) stack, 2163 * we can't support these channels in 5GHz band. 2164 */ 2165 if (chan <= 14) 2166 continue; 2167 2168 ic->ic_channels[chan].ic_freq = 2169 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2170 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2171 } 2172 2173 /* is active scan allowed on this channel? */ 2174 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2175 ic->ic_channels[chan].ic_flags |= 2176 IEEE80211_CHAN_PASSIVE; 2177 } 2178 2179 /* save maximum allowed power for this channel */ 2180 sc->maxpwr[chan] = channels[i].maxpwr; 2181 2182 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2183 chan, channels[i].flags, sc->maxpwr[chan])); 2184 } 2185 } 2186 2187 static void 2188 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2189 { 2190 struct wpi_power_group *group = &sc->groups[n]; 2191 struct wpi_eeprom_group rgroup; 2192 int i; 2193 2194 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2195 sizeof rgroup); 2196 2197 /* save power group information */ 2198 group->chan = rgroup.chan; 2199 group->maxpwr = rgroup.maxpwr; 2200 /* temperature at which the samples were taken */ 2201 group->temp = (int16_t)le16toh(rgroup.temp); 2202 2203 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2204 group->chan, group->maxpwr, group->temp)); 2205 2206 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2207 group->samples[i].index = rgroup.samples[i].index; 2208 group->samples[i].power = rgroup.samples[i].power; 2209 2210 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2211 group->samples[i].index, group->samples[i].power)); 2212 } 2213 } 2214 2215 /* 2216 * Send a command to the firmware. 2217 */ 2218 static int 2219 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2220 { 2221 struct wpi_tx_ring *ring = &sc->cmdq; 2222 struct wpi_tx_desc *desc; 2223 struct wpi_tx_cmd *cmd; 2224 2225 KASSERT(size <= sizeof cmd->data); 2226 2227 desc = &ring->desc[ring->cur]; 2228 cmd = &ring->cmd[ring->cur]; 2229 2230 cmd->code = code; 2231 cmd->flags = 0; 2232 cmd->qid = ring->qid; 2233 cmd->idx = ring->cur; 2234 memcpy(cmd->data, buf, size); 2235 2236 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2237 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2238 ring->cur * sizeof (struct wpi_tx_cmd)); 2239 desc->segs[0].len = htole32(4 + size); 2240 2241 /* kick cmd ring */ 2242 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2243 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2244 2245 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2246 } 2247 2248 static int 2249 wpi_wme_update(struct ieee80211com *ic) 2250 { 2251 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2252 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2253 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2254 const struct wmeParams *wmep; 2255 struct wpi_wme_setup wme; 2256 int ac; 2257 2258 /* don't override default WME values if WME is not actually enabled */ 2259 if (!(ic->ic_flags & IEEE80211_F_WME)) 2260 return 0; 2261 2262 wme.flags = 0; 2263 for (ac = 0; ac < WME_NUM_AC; ac++) { 2264 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2265 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2266 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2267 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2268 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2269 2270 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2271 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2272 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2273 } 2274 2275 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2276 #undef WPI_USEC 2277 #undef WPI_EXP2 2278 } 2279 2280 /* 2281 * Configure h/w multi-rate retries. 2282 */ 2283 static int 2284 wpi_mrr_setup(struct wpi_softc *sc) 2285 { 2286 struct ieee80211com *ic = &sc->sc_ic; 2287 struct wpi_mrr_setup mrr; 2288 int i, error; 2289 2290 /* CCK rates (not used with 802.11a) */ 2291 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2292 mrr.rates[i].flags = 0; 2293 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2294 /* fallback to the immediate lower CCK rate (if any) */ 2295 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2296 /* try one time at this rate before falling back to "next" */ 2297 mrr.rates[i].ntries = 1; 2298 } 2299 2300 /* OFDM rates (not used with 802.11b) */ 2301 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2302 mrr.rates[i].flags = 0; 2303 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2304 /* fallback to the immediate lower rate (if any) */ 2305 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2306 mrr.rates[i].next = (i == WPI_OFDM6) ? 2307 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2308 WPI_OFDM6 : WPI_CCK2) : 2309 i - 1; 2310 /* try one time at this rate before falling back to "next" */ 2311 mrr.rates[i].ntries = 1; 2312 } 2313 2314 /* setup MRR for control frames */ 2315 mrr.which = htole32(WPI_MRR_CTL); 2316 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2317 if (error != 0) { 2318 aprint_error("%s: could not setup MRR for control frames\n", 2319 sc->sc_dev.dv_xname); 2320 return error; 2321 } 2322 2323 /* setup MRR for data frames */ 2324 mrr.which = htole32(WPI_MRR_DATA); 2325 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2326 if (error != 0) { 2327 aprint_error("%s: could not setup MRR for data frames\n", 2328 sc->sc_dev.dv_xname); 2329 return error; 2330 } 2331 2332 return 0; 2333 } 2334 2335 static void 2336 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2337 { 2338 struct wpi_cmd_led led; 2339 2340 led.which = which; 2341 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2342 led.off = off; 2343 led.on = on; 2344 2345 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2346 } 2347 2348 static void 2349 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2350 { 2351 struct wpi_cmd_tsf tsf; 2352 uint64_t val, mod; 2353 2354 memset(&tsf, 0, sizeof tsf); 2355 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2356 tsf.bintval = htole16(ni->ni_intval); 2357 tsf.lintval = htole16(10); 2358 2359 /* compute remaining time until next beacon */ 2360 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2361 mod = le64toh(tsf.tstamp) % val; 2362 tsf.binitval = htole32((uint32_t)(val - mod)); 2363 2364 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2365 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2366 2367 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2368 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2369 } 2370 2371 /* 2372 * Update Tx power to match what is defined for channel `c'. 2373 */ 2374 static int 2375 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2376 { 2377 struct ieee80211com *ic = &sc->sc_ic; 2378 struct wpi_power_group *group; 2379 struct wpi_cmd_txpower txpower; 2380 u_int chan; 2381 int i; 2382 2383 /* get channel number */ 2384 chan = ieee80211_chan2ieee(ic, c); 2385 2386 /* find the power group to which this channel belongs */ 2387 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2388 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2389 if (chan <= group->chan) 2390 break; 2391 } else 2392 group = &sc->groups[0]; 2393 2394 memset(&txpower, 0, sizeof txpower); 2395 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2396 txpower.chan = htole16(chan); 2397 2398 /* set Tx power for all OFDM and CCK rates */ 2399 for (i = 0; i <= 11 ; i++) { 2400 /* retrieve Tx power for this channel/rate combination */ 2401 int idx = wpi_get_power_index(sc, group, c, 2402 wpi_ridx_to_rate[i]); 2403 2404 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2405 2406 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2407 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2408 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2409 } else { 2410 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2411 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2412 } 2413 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2414 wpi_ridx_to_rate[i], idx)); 2415 } 2416 2417 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2418 } 2419 2420 /* 2421 * Determine Tx power index for a given channel/rate combination. 2422 * This takes into account the regulatory information from EEPROM and the 2423 * current temperature. 2424 */ 2425 static int 2426 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2427 struct ieee80211_channel *c, int rate) 2428 { 2429 /* fixed-point arithmetic division using a n-bit fractional part */ 2430 #define fdivround(a, b, n) \ 2431 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2432 2433 /* linear interpolation */ 2434 #define interpolate(x, x1, y1, x2, y2, n) \ 2435 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2436 2437 struct ieee80211com *ic = &sc->sc_ic; 2438 struct wpi_power_sample *sample; 2439 int pwr, idx; 2440 u_int chan; 2441 2442 /* get channel number */ 2443 chan = ieee80211_chan2ieee(ic, c); 2444 2445 /* default power is group's maximum power - 3dB */ 2446 pwr = group->maxpwr / 2; 2447 2448 /* decrease power for highest OFDM rates to reduce distortion */ 2449 switch (rate) { 2450 case 72: /* 36Mb/s */ 2451 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2452 break; 2453 case 96: /* 48Mb/s */ 2454 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2455 break; 2456 case 108: /* 54Mb/s */ 2457 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2458 break; 2459 } 2460 2461 /* never exceed channel's maximum allowed Tx power */ 2462 pwr = min(pwr, sc->maxpwr[chan]); 2463 2464 /* retrieve power index into gain tables from samples */ 2465 for (sample = group->samples; sample < &group->samples[3]; sample++) 2466 if (pwr > sample[1].power) 2467 break; 2468 /* fixed-point linear interpolation using a 19-bit fractional part */ 2469 idx = interpolate(pwr, sample[0].power, sample[0].index, 2470 sample[1].power, sample[1].index, 19); 2471 2472 /* 2473 * Adjust power index based on current temperature: 2474 * - if cooler than factory-calibrated: decrease output power 2475 * - if warmer than factory-calibrated: increase output power 2476 */ 2477 idx -= (sc->temp - group->temp) * 11 / 100; 2478 2479 /* decrease power for CCK rates (-5dB) */ 2480 if (!WPI_RATE_IS_OFDM(rate)) 2481 idx += 10; 2482 2483 /* keep power index in a valid range */ 2484 if (idx < 0) 2485 return 0; 2486 if (idx > WPI_MAX_PWR_INDEX) 2487 return WPI_MAX_PWR_INDEX; 2488 return idx; 2489 2490 #undef interpolate 2491 #undef fdivround 2492 } 2493 2494 /* 2495 * Build a beacon frame that the firmware will broadcast periodically in 2496 * IBSS or HostAP modes. 2497 */ 2498 static int 2499 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2500 { 2501 struct ieee80211com *ic = &sc->sc_ic; 2502 struct wpi_tx_ring *ring = &sc->cmdq; 2503 struct wpi_tx_desc *desc; 2504 struct wpi_tx_data *data; 2505 struct wpi_tx_cmd *cmd; 2506 struct wpi_cmd_beacon *bcn; 2507 struct ieee80211_beacon_offsets bo; 2508 struct mbuf *m0; 2509 int error; 2510 2511 desc = &ring->desc[ring->cur]; 2512 data = &ring->data[ring->cur]; 2513 2514 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2515 if (m0 == NULL) { 2516 aprint_error("%s: could not allocate beacon frame\n", 2517 sc->sc_dev.dv_xname); 2518 return ENOMEM; 2519 } 2520 2521 cmd = &ring->cmd[ring->cur]; 2522 cmd->code = WPI_CMD_SET_BEACON; 2523 cmd->flags = 0; 2524 cmd->qid = ring->qid; 2525 cmd->idx = ring->cur; 2526 2527 bcn = (struct wpi_cmd_beacon *)cmd->data; 2528 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2529 bcn->id = WPI_ID_BROADCAST; 2530 bcn->ofdm_mask = 0xff; 2531 bcn->cck_mask = 0x0f; 2532 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2533 bcn->len = htole16(m0->m_pkthdr.len); 2534 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2535 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2536 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2537 2538 /* save and trim IEEE802.11 header */ 2539 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2540 m_adj(m0, sizeof (struct ieee80211_frame)); 2541 2542 /* assume beacon frame is contiguous */ 2543 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2544 BUS_DMA_READ | BUS_DMA_NOWAIT); 2545 if (error) { 2546 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2547 m_freem(m0); 2548 return error; 2549 } 2550 2551 data->m = m0; 2552 2553 /* first scatter/gather segment is used by the beacon command */ 2554 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2555 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2556 ring->cur * sizeof (struct wpi_tx_cmd)); 2557 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2558 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2559 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2560 2561 /* kick cmd ring */ 2562 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2563 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2564 2565 return 0; 2566 } 2567 2568 static int 2569 wpi_auth(struct wpi_softc *sc) 2570 { 2571 struct ieee80211com *ic = &sc->sc_ic; 2572 struct ieee80211_node *ni = ic->ic_bss; 2573 struct wpi_node_info node; 2574 int error; 2575 2576 /* update adapter's configuration */ 2577 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2578 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2579 sc->config.flags = htole32(WPI_CONFIG_TSF); 2580 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2581 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2582 WPI_CONFIG_24GHZ); 2583 } 2584 switch (ic->ic_curmode) { 2585 case IEEE80211_MODE_11A: 2586 sc->config.cck_mask = 0; 2587 sc->config.ofdm_mask = 0x15; 2588 break; 2589 case IEEE80211_MODE_11B: 2590 sc->config.cck_mask = 0x03; 2591 sc->config.ofdm_mask = 0; 2592 break; 2593 default: /* assume 802.11b/g */ 2594 sc->config.cck_mask = 0x0f; 2595 sc->config.ofdm_mask = 0x15; 2596 } 2597 2598 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2599 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2600 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2601 sizeof (struct wpi_config), 1); 2602 if (error != 0) { 2603 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2604 return error; 2605 } 2606 2607 /* configuration has changed, set Tx power accordingly */ 2608 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2609 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2610 return error; 2611 } 2612 2613 /* add default node */ 2614 memset(&node, 0, sizeof node); 2615 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2616 node.id = WPI_ID_BSS; 2617 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2618 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2619 node.action = htole32(WPI_ACTION_SET_RATE); 2620 node.antenna = WPI_ANTENNA_BOTH; 2621 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2622 if (error != 0) { 2623 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2624 return error; 2625 } 2626 2627 return 0; 2628 } 2629 2630 /* 2631 * Send a scan request to the firmware. Since this command is huge, we map it 2632 * into a mbuf instead of using the pre-allocated set of commands. 2633 */ 2634 static int 2635 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2636 { 2637 struct ieee80211com *ic = &sc->sc_ic; 2638 struct wpi_tx_ring *ring = &sc->cmdq; 2639 struct wpi_tx_desc *desc; 2640 struct wpi_tx_data *data; 2641 struct wpi_tx_cmd *cmd; 2642 struct wpi_scan_hdr *hdr; 2643 struct wpi_scan_chan *chan; 2644 struct ieee80211_frame *wh; 2645 struct ieee80211_rateset *rs; 2646 struct ieee80211_channel *c; 2647 enum ieee80211_phymode mode; 2648 uint8_t *frm; 2649 int nrates, pktlen, error; 2650 2651 desc = &ring->desc[ring->cur]; 2652 data = &ring->data[ring->cur]; 2653 2654 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2655 if (data->m == NULL) { 2656 aprint_error("%s: could not allocate mbuf for scan command\n", 2657 sc->sc_dev.dv_xname); 2658 return ENOMEM; 2659 } 2660 2661 MCLGET(data->m, M_DONTWAIT); 2662 if (!(data->m->m_flags & M_EXT)) { 2663 m_freem(data->m); 2664 data->m = NULL; 2665 aprint_error("%s: could not allocate mbuf for scan command\n", 2666 sc->sc_dev.dv_xname); 2667 return ENOMEM; 2668 } 2669 2670 cmd = mtod(data->m, struct wpi_tx_cmd *); 2671 cmd->code = WPI_CMD_SCAN; 2672 cmd->flags = 0; 2673 cmd->qid = ring->qid; 2674 cmd->idx = ring->cur; 2675 2676 hdr = (struct wpi_scan_hdr *)cmd->data; 2677 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2678 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2679 hdr->id = WPI_ID_BROADCAST; 2680 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2681 2682 /* 2683 * Move to the next channel if no packets are received within 5 msecs 2684 * after sending the probe request (this helps to reduce the duration 2685 * of active scans). 2686 */ 2687 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2688 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2689 2690 if (flags & IEEE80211_CHAN_A) { 2691 hdr->crc_threshold = htole16(1); 2692 /* send probe requests at 6Mbps */ 2693 hdr->rate = wpi_plcp_signal(12); 2694 } else { 2695 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2696 /* send probe requests at 1Mbps */ 2697 hdr->rate = wpi_plcp_signal(2); 2698 } 2699 2700 /* for directed scans, firmware inserts the essid IE itself */ 2701 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2702 hdr->essid[0].len = ic->ic_des_esslen; 2703 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2704 2705 /* 2706 * Build a probe request frame. Most of the following code is a 2707 * copy & paste of what is done in net80211. 2708 */ 2709 wh = (struct ieee80211_frame *)(hdr + 1); 2710 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2711 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2712 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2713 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2714 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2715 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2716 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2717 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2718 2719 frm = (uint8_t *)(wh + 1); 2720 2721 /* add empty essid IE (firmware generates it for directed scans) */ 2722 *frm++ = IEEE80211_ELEMID_SSID; 2723 *frm++ = 0; 2724 2725 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2726 rs = &ic->ic_sup_rates[mode]; 2727 2728 /* add supported rates IE */ 2729 *frm++ = IEEE80211_ELEMID_RATES; 2730 nrates = rs->rs_nrates; 2731 if (nrates > IEEE80211_RATE_SIZE) 2732 nrates = IEEE80211_RATE_SIZE; 2733 *frm++ = nrates; 2734 memcpy(frm, rs->rs_rates, nrates); 2735 frm += nrates; 2736 2737 /* add supported xrates IE */ 2738 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2739 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2740 *frm++ = IEEE80211_ELEMID_XRATES; 2741 *frm++ = nrates; 2742 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2743 frm += nrates; 2744 } 2745 2746 /* setup length of probe request */ 2747 hdr->paylen = htole16(frm - (uint8_t *)wh); 2748 2749 chan = (struct wpi_scan_chan *)frm; 2750 for (c = &ic->ic_channels[1]; 2751 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2752 if ((c->ic_flags & flags) != flags) 2753 continue; 2754 2755 chan->chan = ieee80211_chan2ieee(ic, c); 2756 chan->flags = 0; 2757 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2758 chan->flags |= WPI_CHAN_ACTIVE; 2759 if (ic->ic_des_esslen != 0) 2760 chan->flags |= WPI_CHAN_DIRECT; 2761 } 2762 chan->dsp_gain = 0x6e; 2763 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2764 chan->rf_gain = 0x3b; 2765 chan->active = htole16(10); 2766 chan->passive = htole16(110); 2767 } else { 2768 chan->rf_gain = 0x28; 2769 chan->active = htole16(20); 2770 chan->passive = htole16(120); 2771 } 2772 hdr->nchan++; 2773 chan++; 2774 2775 frm += sizeof (struct wpi_scan_chan); 2776 } 2777 hdr->len = htole16(frm - (uint8_t *)hdr); 2778 pktlen = frm - (uint8_t *)cmd; 2779 2780 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2781 NULL, BUS_DMA_NOWAIT); 2782 if (error) { 2783 aprint_error("%s: could not map scan command\n", 2784 sc->sc_dev.dv_xname); 2785 m_freem(data->m); 2786 data->m = NULL; 2787 return error; 2788 } 2789 2790 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2791 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2792 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2793 2794 /* kick cmd ring */ 2795 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2796 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2797 2798 return 0; /* will be notified async. of failure/success */ 2799 } 2800 2801 static int 2802 wpi_config(struct wpi_softc *sc) 2803 { 2804 struct ieee80211com *ic = &sc->sc_ic; 2805 struct ifnet *ifp = ic->ic_ifp; 2806 struct wpi_power power; 2807 struct wpi_bluetooth bluetooth; 2808 struct wpi_node_info node; 2809 int error; 2810 2811 memset(&power, 0, sizeof power); 2812 power.flags = htole32(WPI_POWER_CAM | 0x8); 2813 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2814 if (error != 0) { 2815 aprint_error("%s: could not set power mode\n", 2816 sc->sc_dev.dv_xname); 2817 return error; 2818 } 2819 2820 /* configure bluetooth coexistence */ 2821 memset(&bluetooth, 0, sizeof bluetooth); 2822 bluetooth.flags = 3; 2823 bluetooth.lead = 0xaa; 2824 bluetooth.kill = 1; 2825 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2826 0); 2827 if (error != 0) { 2828 aprint_error( 2829 "%s: could not configure bluetooth coexistence\n", 2830 sc->sc_dev.dv_xname); 2831 return error; 2832 } 2833 2834 /* configure adapter */ 2835 memset(&sc->config, 0, sizeof (struct wpi_config)); 2836 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2837 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2838 /*set default channel*/ 2839 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2840 sc->config.flags = htole32(WPI_CONFIG_TSF); 2841 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2842 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2843 WPI_CONFIG_24GHZ); 2844 } 2845 sc->config.filter = 0; 2846 switch (ic->ic_opmode) { 2847 case IEEE80211_M_STA: 2848 sc->config.mode = WPI_MODE_STA; 2849 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2850 break; 2851 case IEEE80211_M_IBSS: 2852 case IEEE80211_M_AHDEMO: 2853 sc->config.mode = WPI_MODE_IBSS; 2854 break; 2855 case IEEE80211_M_HOSTAP: 2856 sc->config.mode = WPI_MODE_HOSTAP; 2857 break; 2858 case IEEE80211_M_MONITOR: 2859 sc->config.mode = WPI_MODE_MONITOR; 2860 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2861 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2862 break; 2863 } 2864 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2865 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2866 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2867 sizeof (struct wpi_config), 0); 2868 if (error != 0) { 2869 aprint_error("%s: configure command failed\n", 2870 sc->sc_dev.dv_xname); 2871 return error; 2872 } 2873 2874 /* configuration has changed, set Tx power accordingly */ 2875 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2876 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2877 return error; 2878 } 2879 2880 /* add broadcast node */ 2881 memset(&node, 0, sizeof node); 2882 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2883 node.id = WPI_ID_BROADCAST; 2884 node.rate = wpi_plcp_signal(2); 2885 node.action = htole32(WPI_ACTION_SET_RATE); 2886 node.antenna = WPI_ANTENNA_BOTH; 2887 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2888 if (error != 0) { 2889 aprint_error("%s: could not add broadcast node\n", 2890 sc->sc_dev.dv_xname); 2891 return error; 2892 } 2893 2894 if ((error = wpi_mrr_setup(sc)) != 0) { 2895 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2896 return error; 2897 } 2898 2899 return 0; 2900 } 2901 2902 static void 2903 wpi_stop_master(struct wpi_softc *sc) 2904 { 2905 uint32_t tmp; 2906 int ntries; 2907 2908 tmp = WPI_READ(sc, WPI_RESET); 2909 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2910 2911 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2912 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2913 return; /* already asleep */ 2914 2915 for (ntries = 0; ntries < 100; ntries++) { 2916 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2917 break; 2918 DELAY(10); 2919 } 2920 if (ntries == 100) { 2921 aprint_error("%s: timeout waiting for master\n", 2922 sc->sc_dev.dv_xname); 2923 } 2924 } 2925 2926 static int 2927 wpi_power_up(struct wpi_softc *sc) 2928 { 2929 uint32_t tmp; 2930 int ntries; 2931 2932 wpi_mem_lock(sc); 2933 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2934 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2935 wpi_mem_unlock(sc); 2936 2937 for (ntries = 0; ntries < 5000; ntries++) { 2938 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2939 break; 2940 DELAY(10); 2941 } 2942 if (ntries == 5000) { 2943 aprint_error("%s: timeout waiting for NIC to power up\n", 2944 sc->sc_dev.dv_xname); 2945 return ETIMEDOUT; 2946 } 2947 return 0; 2948 } 2949 2950 static int 2951 wpi_reset(struct wpi_softc *sc) 2952 { 2953 uint32_t tmp; 2954 int ntries; 2955 2956 /* clear any pending interrupts */ 2957 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2958 2959 tmp = WPI_READ(sc, WPI_PLL_CTL); 2960 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2961 2962 tmp = WPI_READ(sc, WPI_CHICKEN); 2963 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2964 2965 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2966 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2967 2968 /* wait for clock stabilization */ 2969 for (ntries = 0; ntries < 1000; ntries++) { 2970 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2971 break; 2972 DELAY(10); 2973 } 2974 if (ntries == 1000) { 2975 aprint_error("%s: timeout waiting for clock stabilization\n", 2976 sc->sc_dev.dv_xname); 2977 return ETIMEDOUT; 2978 } 2979 2980 /* initialize EEPROM */ 2981 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2982 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2983 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 2984 return EIO; 2985 } 2986 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2987 2988 return 0; 2989 } 2990 2991 static void 2992 wpi_hw_config(struct wpi_softc *sc) 2993 { 2994 uint32_t rev, hw; 2995 2996 /* voodoo from the reference driver */ 2997 hw = WPI_READ(sc, WPI_HWCONFIG); 2998 2999 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 3000 rev = PCI_REVISION(rev); 3001 if ((rev & 0xc0) == 0x40) 3002 hw |= WPI_HW_ALM_MB; 3003 else if (!(rev & 0x80)) 3004 hw |= WPI_HW_ALM_MM; 3005 3006 if (sc->cap == 0x80) 3007 hw |= WPI_HW_SKU_MRC; 3008 3009 hw &= ~WPI_HW_REV_D; 3010 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3011 hw |= WPI_HW_REV_D; 3012 3013 if (sc->type > 1) 3014 hw |= WPI_HW_TYPE_B; 3015 3016 DPRINTF(("setting h/w config %x\n", hw)); 3017 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3018 } 3019 3020 static int 3021 wpi_init(struct ifnet *ifp) 3022 { 3023 struct wpi_softc *sc = ifp->if_softc; 3024 struct ieee80211com *ic = &sc->sc_ic; 3025 uint32_t tmp; 3026 int qid, ntries, error; 3027 3028 wpi_stop(ifp,1); 3029 (void)wpi_reset(sc); 3030 3031 wpi_mem_lock(sc); 3032 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3033 DELAY(20); 3034 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3035 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3036 wpi_mem_unlock(sc); 3037 3038 (void)wpi_power_up(sc); 3039 wpi_hw_config(sc); 3040 3041 /* init Rx ring */ 3042 wpi_mem_lock(sc); 3043 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3044 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3045 offsetof(struct wpi_shared, next)); 3046 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3047 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3048 wpi_mem_unlock(sc); 3049 3050 /* init Tx rings */ 3051 wpi_mem_lock(sc); 3052 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3053 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3054 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3055 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3056 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3057 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3058 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3059 3060 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3061 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3062 3063 for (qid = 0; qid < 6; qid++) { 3064 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3065 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3066 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3067 } 3068 wpi_mem_unlock(sc); 3069 3070 /* clear "radio off" and "disable command" bits (reversed logic) */ 3071 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3072 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3073 3074 /* clear any pending interrupts */ 3075 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3076 /* enable interrupts */ 3077 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3078 3079 /* not sure why/if this is necessary... */ 3080 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3081 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3082 3083 if ((error = wpi_load_firmware(sc)) != 0) { 3084 aprint_error("%s: could not load firmware\n", sc->sc_dev.dv_xname); 3085 goto fail1; 3086 } 3087 3088 /* wait for thermal sensors to calibrate */ 3089 for (ntries = 0; ntries < 1000; ntries++) { 3090 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3091 break; 3092 DELAY(10); 3093 } 3094 if (ntries == 1000) { 3095 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 3096 sc->sc_dev.dv_xname); 3097 error = ETIMEDOUT; 3098 goto fail1; 3099 } 3100 3101 DPRINTF(("temperature %d\n", sc->temp)); 3102 3103 if ((error = wpi_config(sc)) != 0) { 3104 aprint_error("%s: could not configure device\n", 3105 sc->sc_dev.dv_xname); 3106 goto fail1; 3107 } 3108 3109 ifp->if_flags &= ~IFF_OACTIVE; 3110 ifp->if_flags |= IFF_RUNNING; 3111 3112 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3113 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3114 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3115 } 3116 else 3117 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3118 3119 return 0; 3120 3121 fail1: wpi_stop(ifp, 1); 3122 return error; 3123 } 3124 3125 3126 static void 3127 wpi_stop(struct ifnet *ifp, int disable) 3128 { 3129 struct wpi_softc *sc = ifp->if_softc; 3130 struct ieee80211com *ic = &sc->sc_ic; 3131 uint32_t tmp; 3132 int ac; 3133 3134 ifp->if_timer = sc->sc_tx_timer = 0; 3135 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3136 3137 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3138 3139 /* disable interrupts */ 3140 WPI_WRITE(sc, WPI_MASK, 0); 3141 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3142 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3143 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3144 3145 wpi_mem_lock(sc); 3146 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3147 wpi_mem_unlock(sc); 3148 3149 /* reset all Tx rings */ 3150 for (ac = 0; ac < 4; ac++) 3151 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3152 wpi_reset_tx_ring(sc, &sc->cmdq); 3153 3154 /* reset Rx ring */ 3155 wpi_reset_rx_ring(sc, &sc->rxq); 3156 3157 wpi_mem_lock(sc); 3158 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3159 wpi_mem_unlock(sc); 3160 3161 DELAY(5); 3162 3163 wpi_stop_master(sc); 3164 3165 tmp = WPI_READ(sc, WPI_RESET); 3166 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3167 } 3168 3169 static bool 3170 wpi_resume(device_t dv) 3171 { 3172 struct wpi_softc *sc = device_private(dv); 3173 3174 pci_disable_retry(sc->sc_pct, sc->sc_pcitag); 3175 (void)wpi_reset(sc); 3176 3177 return true; 3178 } 3179
Indexes created Thu Oct 02 01:09:59 GMT 2025