if_wpi.c revision 1.17.4.10
1 /* $NetBSD: if_wpi.c,v 1.17.4.10 2007/11/11 16:47:42 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 1.17.4.10 2007/11/11 16:47:42 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; 545 546 /* put the buffer back in the free list */ 547 548 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 549 sc->rxq.nb_free_entries ++; 550 551 if (__predict_true(m != NULL)) 552 pool_cache_put(mb_cache, m); 553 } 554 555 static int 556 wpi_alloc_rpool(struct wpi_softc *sc) 557 { 558 struct wpi_rx_ring *ring = &sc->rxq; 559 struct wpi_rbuf *rbuf; 560 int i, error; 561 562 /* allocate a big chunk of DMA'able memory.. */ 563 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 564 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 565 if (error != 0) { 566 aprint_normal("%s: could not allocate Rx buffers DMA memory\n", 567 sc->sc_dev.dv_xname); 568 return error; 569 } 570 571 /* ..and split it into 3KB chunks */ 572 SLIST_INIT(&ring->freelist); 573 for (i = 0; i < WPI_RBUF_COUNT; i++) { 574 rbuf = &ring->rbuf[i]; 575 rbuf->sc = sc; /* backpointer for callbacks */ 576 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 577 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 578 579 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 580 } 581 582 ring->nb_free_entries = WPI_RBUF_COUNT; 583 return 0; 584 } 585 586 static void 587 wpi_free_rpool(struct wpi_softc *sc) 588 { 589 wpi_dma_contig_free(&sc->rxq.buf_dma); 590 } 591 592 static int 593 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 594 { 595 struct wpi_rx_data *data; 596 struct wpi_rbuf *rbuf; 597 int i, error; 598 599 ring->cur = 0; 600 601 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 602 (void **)&ring->desc, 603 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 604 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 605 if (error != 0) { 606 aprint_error("%s: could not allocate rx ring DMA memory\n", 607 sc->sc_dev.dv_xname); 608 goto fail; 609 } 610 611 /* 612 * Setup Rx buffers. 613 */ 614 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 615 data = &ring->data[i]; 616 617 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 618 if (data->m == NULL) { 619 aprint_error("%s: could not allocate rx mbuf\n", 620 sc->sc_dev.dv_xname); 621 error = ENOMEM; 622 goto fail; 623 } 624 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 625 m_freem(data->m); 626 data->m = NULL; 627 aprint_error("%s: could not allocate rx cluster\n", 628 sc->sc_dev.dv_xname); 629 error = ENOMEM; 630 goto fail; 631 } 632 /* attach Rx buffer to mbuf */ 633 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 634 rbuf); 635 data->m->m_flags |= M_EXT_RW; 636 637 ring->desc[i] = htole32(rbuf->paddr); 638 } 639 640 return 0; 641 642 fail: wpi_free_rx_ring(sc, ring); 643 return error; 644 } 645 646 static void 647 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 648 { 649 int ntries; 650 651 wpi_mem_lock(sc); 652 653 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 654 for (ntries = 0; ntries < 100; ntries++) { 655 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 656 break; 657 DELAY(10); 658 } 659 #ifdef WPI_DEBUG 660 if (ntries == 100 && wpi_debug > 0) 661 aprint_error("%s: timeout resetting Rx ring\n", 662 sc->sc_dev.dv_xname); 663 #endif 664 wpi_mem_unlock(sc); 665 666 ring->cur = 0; 667 } 668 669 static void 670 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 671 { 672 int i; 673 674 wpi_dma_contig_free(&ring->desc_dma); 675 676 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 677 if (ring->data[i].m != NULL) 678 m_freem(ring->data[i].m); 679 } 680 } 681 682 static int 683 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 684 int qid) 685 { 686 struct wpi_tx_data *data; 687 int i, error; 688 689 ring->qid = qid; 690 ring->count = count; 691 ring->queued = 0; 692 ring->cur = 0; 693 694 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 695 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 696 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 697 if (error != 0) { 698 aprint_error("%s: could not allocate tx ring DMA memory\n", 699 sc->sc_dev.dv_xname); 700 goto fail; 701 } 702 703 /* update shared page with ring's base address */ 704 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 705 706 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 707 (void **)&ring->cmd, 708 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 709 if (error != 0) { 710 aprint_error("%s: could not allocate tx cmd DMA memory\n", 711 sc->sc_dev.dv_xname); 712 goto fail; 713 } 714 715 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 716 M_NOWAIT); 717 if (ring->data == NULL) { 718 aprint_error("%s: could not allocate tx data slots\n", 719 sc->sc_dev.dv_xname); 720 goto fail; 721 } 722 723 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 724 725 for (i = 0; i < count; i++) { 726 data = &ring->data[i]; 727 728 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 729 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 730 &data->map); 731 if (error != 0) { 732 aprint_error("%s: could not create tx buf DMA map\n", 733 sc->sc_dev.dv_xname); 734 goto fail; 735 } 736 } 737 738 return 0; 739 740 fail: wpi_free_tx_ring(sc, ring); 741 return error; 742 } 743 744 static void 745 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 746 { 747 struct wpi_tx_data *data; 748 int i, ntries; 749 750 wpi_mem_lock(sc); 751 752 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 753 for (ntries = 0; ntries < 100; ntries++) { 754 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 755 break; 756 DELAY(10); 757 } 758 #ifdef WPI_DEBUG 759 if (ntries == 100 && wpi_debug > 0) { 760 aprint_error("%s: timeout resetting Tx ring %d\n", 761 sc->sc_dev.dv_xname, ring->qid); 762 } 763 #endif 764 wpi_mem_unlock(sc); 765 766 for (i = 0; i < ring->count; i++) { 767 data = &ring->data[i]; 768 769 if (data->m != NULL) { 770 bus_dmamap_unload(sc->sc_dmat, data->map); 771 m_freem(data->m); 772 data->m = NULL; 773 } 774 } 775 776 ring->queued = 0; 777 ring->cur = 0; 778 } 779 780 static void 781 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 782 { 783 struct wpi_tx_data *data; 784 int i; 785 786 wpi_dma_contig_free(&ring->desc_dma); 787 wpi_dma_contig_free(&ring->cmd_dma); 788 789 if (ring->data != NULL) { 790 for (i = 0; i < ring->count; i++) { 791 data = &ring->data[i]; 792 793 if (data->m != NULL) { 794 bus_dmamap_unload(sc->sc_dmat, data->map); 795 m_freem(data->m); 796 } 797 } 798 free(ring->data, M_DEVBUF); 799 } 800 } 801 802 /*ARGUSED*/ 803 static struct ieee80211_node * 804 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 805 { 806 struct wpi_node *wn; 807 808 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 809 810 if (wn != NULL) 811 memset(wn, 0, sizeof (struct wpi_node)); 812 return (struct ieee80211_node *)wn; 813 } 814 815 static void 816 wpi_newassoc(struct ieee80211_node *ni, int isnew) 817 { 818 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 819 int i; 820 821 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 822 823 /* set rate to some reasonable initial value */ 824 for (i = ni->ni_rates.rs_nrates - 1; 825 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 826 i--); 827 ni->ni_txrate = i; 828 } 829 830 static int 831 wpi_media_change(struct ifnet *ifp) 832 { 833 int error; 834 835 error = ieee80211_media_change(ifp); 836 if (error != ENETRESET) 837 return error; 838 839 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 840 wpi_init(ifp); 841 842 return 0; 843 } 844 845 static int 846 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 847 { 848 struct ifnet *ifp = ic->ic_ifp; 849 struct wpi_softc *sc = ifp->if_softc; 850 struct ieee80211_node *ni; 851 int error; 852 853 callout_stop(&sc->calib_to); 854 855 switch (nstate) { 856 case IEEE80211_S_SCAN: 857 858 if (sc->is_scanning) 859 break; 860 861 sc->is_scanning = true; 862 ieee80211_node_table_reset(&ic->ic_scan); 863 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 864 865 /* make the link LED blink while we're scanning */ 866 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 867 868 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 869 aprint_error("%s: could not initiate scan\n", 870 sc->sc_dev.dv_xname); 871 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 872 return error; 873 } 874 875 ic->ic_state = nstate; 876 return 0; 877 878 case IEEE80211_S_ASSOC: 879 if (ic->ic_state != IEEE80211_S_RUN) 880 break; 881 /* FALLTHROUGH */ 882 case IEEE80211_S_AUTH: 883 sc->config.associd = 0; 884 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 885 if ((error = wpi_auth(sc)) != 0) { 886 aprint_error("%s: could not send authentication request\n", 887 sc->sc_dev.dv_xname); 888 return error; 889 } 890 break; 891 892 case IEEE80211_S_RUN: 893 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 894 /* link LED blinks while monitoring */ 895 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 896 break; 897 } 898 899 ni = ic->ic_bss; 900 901 if (ic->ic_opmode != IEEE80211_M_STA) { 902 (void) wpi_auth(sc); /* XXX */ 903 wpi_setup_beacon(sc, ni); 904 } 905 906 wpi_enable_tsf(sc, ni); 907 908 /* update adapter's configuration */ 909 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 910 /* short preamble/slot time are negotiated when associating */ 911 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 912 WPI_CONFIG_SHSLOT); 913 if (ic->ic_flags & IEEE80211_F_SHSLOT) 914 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 915 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 916 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 917 sc->config.filter |= htole32(WPI_FILTER_BSS); 918 if (ic->ic_opmode != IEEE80211_M_STA) 919 sc->config.filter |= htole32(WPI_FILTER_BEACON); 920 921 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 922 923 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 924 sc->config.flags)); 925 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 926 sizeof (struct wpi_config), 1); 927 if (error != 0) { 928 aprint_error("%s: could not update configuration\n", 929 sc->sc_dev.dv_xname); 930 return error; 931 } 932 933 /* configuration has changed, set Tx power accordingly */ 934 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 935 aprint_error("%s: could not set Tx power\n", 936 sc->sc_dev.dv_xname); 937 return error; 938 } 939 940 if (ic->ic_opmode == IEEE80211_M_STA) { 941 /* fake a join to init the tx rate */ 942 wpi_newassoc(ni, 1); 943 } 944 945 /* start periodic calibration timer */ 946 sc->calib_cnt = 0; 947 callout_schedule(&sc->calib_to, hz/2); 948 949 /* link LED always on while associated */ 950 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 951 break; 952 953 case IEEE80211_S_INIT: 954 sc->is_scanning = false; 955 break; 956 } 957 958 return sc->sc_newstate(ic, nstate, arg); 959 } 960 961 /* 962 * XXX: Hack to set the current channel to the value advertised in beacons or 963 * probe responses. Only used during AP detection. 964 * XXX: Duplicated from if_iwi.c 965 */ 966 static void 967 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 968 { 969 struct ieee80211_frame *wh; 970 uint8_t subtype; 971 uint8_t *frm, *efrm; 972 973 wh = mtod(m, struct ieee80211_frame *); 974 975 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 976 return; 977 978 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 979 980 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 981 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 982 return; 983 984 frm = (uint8_t *)(wh + 1); 985 efrm = mtod(m, uint8_t *) + m->m_len; 986 987 frm += 12; /* skip tstamp, bintval and capinfo fields */ 988 while (frm < efrm) { 989 if (*frm == IEEE80211_ELEMID_DSPARMS) 990 #if IEEE80211_CHAN_MAX < 255 991 if (frm[2] <= IEEE80211_CHAN_MAX) 992 #endif 993 ic->ic_curchan = &ic->ic_channels[frm[2]]; 994 995 frm += frm[1] + 2; 996 } 997 } 998 999 /* 1000 * Grab exclusive access to NIC memory. 1001 */ 1002 static void 1003 wpi_mem_lock(struct wpi_softc *sc) 1004 { 1005 uint32_t tmp; 1006 int ntries; 1007 1008 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1009 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1010 1011 /* spin until we actually get the lock */ 1012 for (ntries = 0; ntries < 1000; ntries++) { 1013 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1014 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1015 break; 1016 DELAY(10); 1017 } 1018 if (ntries == 1000) 1019 aprint_error_dev(&sc->sc_dev, "could not lock memory\n"); 1020 } 1021 1022 /* 1023 * Release lock on NIC memory. 1024 */ 1025 static void 1026 wpi_mem_unlock(struct wpi_softc *sc) 1027 { 1028 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1029 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1030 } 1031 1032 static uint32_t 1033 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1034 { 1035 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1036 return WPI_READ(sc, WPI_READ_MEM_DATA); 1037 } 1038 1039 static void 1040 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1041 { 1042 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1043 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1044 } 1045 1046 static void 1047 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1048 const uint32_t *data, int wlen) 1049 { 1050 for (; wlen > 0; wlen--, data++, addr += 4) 1051 wpi_mem_write(sc, addr, *data); 1052 } 1053 1054 1055 /* 1056 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1057 * instead of using the traditional bit-bang method. 1058 */ 1059 static int 1060 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1061 { 1062 uint8_t *out = data; 1063 uint32_t val; 1064 int ntries; 1065 1066 wpi_mem_lock(sc); 1067 for (; len > 0; len -= 2, addr++) { 1068 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1069 1070 for (ntries = 0; ntries < 10; ntries++) { 1071 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1072 WPI_EEPROM_READY) 1073 break; 1074 DELAY(5); 1075 } 1076 if (ntries == 10) { 1077 aprint_error("%s: could not read EEPROM\n", 1078 sc->sc_dev.dv_xname); 1079 return ETIMEDOUT; 1080 } 1081 *out++ = val >> 16; 1082 if (len > 1) 1083 *out++ = val >> 24; 1084 } 1085 wpi_mem_unlock(sc); 1086 1087 return 0; 1088 } 1089 1090 /* 1091 * The firmware boot code is small and is intended to be copied directly into 1092 * the NIC internal memory. 1093 */ 1094 int 1095 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1096 { 1097 int ntries; 1098 1099 size /= sizeof (uint32_t); 1100 1101 wpi_mem_lock(sc); 1102 1103 /* copy microcode image into NIC memory */ 1104 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1105 (const uint32_t *)ucode, size); 1106 1107 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1108 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1109 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1110 1111 /* run microcode */ 1112 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1113 1114 /* wait for transfer to complete */ 1115 for (ntries = 0; ntries < 1000; ntries++) { 1116 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1117 break; 1118 DELAY(10); 1119 } 1120 if (ntries == 1000) { 1121 wpi_mem_unlock(sc); 1122 printf("%s: could not load boot firmware\n", 1123 sc->sc_dev.dv_xname); 1124 return ETIMEDOUT; 1125 } 1126 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1127 1128 wpi_mem_unlock(sc); 1129 1130 return 0; 1131 } 1132 1133 static int 1134 wpi_load_firmware(struct wpi_softc *sc) 1135 { 1136 struct wpi_dma_info *dma = &sc->fw_dma; 1137 struct wpi_firmware_hdr hdr; 1138 const uint8_t *init_text, *init_data, *main_text, *main_data; 1139 const uint8_t *boot_text; 1140 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1141 uint32_t boot_textsz; 1142 firmware_handle_t fw; 1143 u_char *dfw; 1144 size_t size; 1145 int error; 1146 1147 /* load firmware image from disk */ 1148 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1149 aprint_error("%s: could not read firmware file\n", 1150 sc->sc_dev.dv_xname); 1151 goto fail1; 1152 } 1153 1154 size = firmware_get_size(fw); 1155 1156 /* extract firmware header information */ 1157 if (size < sizeof (struct wpi_firmware_hdr)) { 1158 aprint_error("%s: truncated firmware header: %zu bytes\n", 1159 sc->sc_dev.dv_xname, size); 1160 error = EINVAL; 1161 goto fail2; 1162 } 1163 1164 if ((error = firmware_read(fw, 0, &hdr, 1165 sizeof (struct wpi_firmware_hdr))) != 0) { 1166 aprint_error("%s: can't get firmware header\n", 1167 sc->sc_dev.dv_xname); 1168 goto fail2; 1169 } 1170 1171 main_textsz = le32toh(hdr.main_textsz); 1172 main_datasz = le32toh(hdr.main_datasz); 1173 init_textsz = le32toh(hdr.init_textsz); 1174 init_datasz = le32toh(hdr.init_datasz); 1175 boot_textsz = le32toh(hdr.boot_textsz); 1176 1177 /* sanity-check firmware segments sizes */ 1178 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1179 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1180 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1181 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1182 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1183 (boot_textsz & 3) != 0) { 1184 printf("%s: invalid firmware header\n", sc->sc_dev.dv_xname); 1185 error = EINVAL; 1186 goto fail2; 1187 } 1188 1189 /* check that all firmware segments are present */ 1190 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1191 main_datasz + init_textsz + init_datasz + boot_textsz) { 1192 aprint_error("%s: firmware file too short: %zu bytes\n", 1193 sc->sc_dev.dv_xname, size); 1194 error = EINVAL; 1195 goto fail2; 1196 } 1197 1198 dfw = firmware_malloc(size); 1199 if (dfw == NULL) { 1200 aprint_error("%s: not enough memory to stock firmware\n", 1201 sc->sc_dev.dv_xname); 1202 error = ENOMEM; 1203 goto fail2; 1204 } 1205 1206 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1207 aprint_error("%s: can't get firmware\n", 1208 sc->sc_dev.dv_xname); 1209 goto fail2; 1210 } 1211 1212 /* get pointers to firmware segments */ 1213 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1214 main_data = main_text + main_textsz; 1215 init_text = main_data + main_datasz; 1216 init_data = init_text + init_textsz; 1217 boot_text = init_data + init_datasz; 1218 1219 /* copy initialization images into pre-allocated DMA-safe memory */ 1220 memcpy(dma->vaddr, init_data, init_datasz); 1221 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1222 1223 /* tell adapter where to find initialization images */ 1224 wpi_mem_lock(sc); 1225 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1226 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1227 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1228 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1229 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1230 wpi_mem_unlock(sc); 1231 1232 /* load firmware boot code */ 1233 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1234 printf("%s: could not load boot firmware\n", 1235 sc->sc_dev.dv_xname); 1236 goto fail3; 1237 } 1238 1239 /* now press "execute" ;-) */ 1240 WPI_WRITE(sc, WPI_RESET, 0); 1241 1242 /* ..and wait at most one second for adapter to initialize */ 1243 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1244 /* this isn't what was supposed to happen.. */ 1245 aprint_error("%s: timeout waiting for adapter to initialize\n", 1246 sc->sc_dev.dv_xname); 1247 } 1248 1249 /* copy runtime images into pre-allocated DMA-safe memory */ 1250 memcpy(dma->vaddr, main_data, main_datasz); 1251 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1252 1253 /* tell adapter where to find runtime images */ 1254 wpi_mem_lock(sc); 1255 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1256 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1257 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1258 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1259 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1260 wpi_mem_unlock(sc); 1261 1262 /* wait at most one second for second alive notification */ 1263 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1264 /* this isn't what was supposed to happen.. */ 1265 printf("%s: timeout waiting for adapter to initialize\n", 1266 sc->sc_dev.dv_xname); 1267 } 1268 1269 1270 fail3: firmware_free(dfw,size); 1271 fail2: firmware_close(fw); 1272 fail1: return error; 1273 } 1274 1275 static void 1276 wpi_calib_timeout(void *arg) 1277 { 1278 struct wpi_softc *sc = arg; 1279 struct ieee80211com *ic = &sc->sc_ic; 1280 int temp, s; 1281 1282 /* automatic rate control triggered every 500ms */ 1283 if (ic->ic_fixed_rate == -1) { 1284 s = splnet(); 1285 if (ic->ic_opmode == IEEE80211_M_STA) 1286 wpi_iter_func(sc, ic->ic_bss); 1287 else 1288 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1289 splx(s); 1290 } 1291 1292 /* update sensor data */ 1293 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1294 1295 /* automatic power calibration every 60s */ 1296 if (++sc->calib_cnt >= 120) { 1297 wpi_power_calibration(sc, temp); 1298 sc->calib_cnt = 0; 1299 } 1300 1301 callout_schedule(&sc->calib_to, hz/2); 1302 } 1303 1304 static void 1305 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1306 { 1307 struct wpi_softc *sc = arg; 1308 struct wpi_node *wn = (struct wpi_node *)ni; 1309 1310 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1311 } 1312 1313 /* 1314 * This function is called periodically (every 60 seconds) to adjust output 1315 * power to temperature changes. 1316 */ 1317 void 1318 wpi_power_calibration(struct wpi_softc *sc, int temp) 1319 { 1320 /* sanity-check read value */ 1321 if (temp < -260 || temp > 25) { 1322 /* this can't be correct, ignore */ 1323 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1324 return; 1325 } 1326 1327 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1328 1329 /* adjust Tx power if need be */ 1330 if (abs(temp - sc->temp) <= 6) 1331 return; 1332 1333 sc->temp = temp; 1334 1335 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1336 /* just warn, too bad for the automatic calibration... */ 1337 aprint_error("%s: could not adjust Tx power\n", 1338 sc->sc_dev.dv_xname); 1339 } 1340 } 1341 1342 static void 1343 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1344 struct wpi_rx_data *data) 1345 { 1346 struct ieee80211com *ic = &sc->sc_ic; 1347 struct ifnet *ifp = ic->ic_ifp; 1348 struct wpi_rx_ring *ring = &sc->rxq; 1349 struct wpi_rx_stat *stat; 1350 struct wpi_rx_head *head; 1351 struct wpi_rx_tail *tail; 1352 struct wpi_rbuf *rbuf; 1353 struct ieee80211_frame *wh; 1354 struct ieee80211_node *ni; 1355 struct mbuf *m, *mnew; 1356 int data_off ; 1357 1358 stat = (struct wpi_rx_stat *)(desc + 1); 1359 1360 if (stat->len > WPI_STAT_MAXLEN) { 1361 aprint_error("%s: invalid rx statistic header\n", 1362 sc->sc_dev.dv_xname); 1363 ifp->if_ierrors++; 1364 return; 1365 } 1366 1367 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1368 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1369 1370 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1371 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1372 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1373 le64toh(tail->tstamp))); 1374 1375 /* 1376 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1377 * to radiotap in monitor mode). 1378 */ 1379 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1380 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1381 ifp->if_ierrors++; 1382 return; 1383 } 1384 1385 /* Compute where are the useful datas */ 1386 data_off = (char*)(head + 1) - mtod(data->m, char*); 1387 1388 /* 1389 * If the number of free entry is too low 1390 * just dup the data->m socket and reuse the same rbuf entry 1391 */ 1392 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1393 1394 /* Prepare the mbuf for the m_dup */ 1395 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1396 data->m->m_data = (char*) data->m->m_data + data_off; 1397 1398 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1399 1400 /* Restore the m_data pointer for future use */ 1401 data->m->m_data = (char*) data->m->m_data - data_off; 1402 1403 if (m == NULL) { 1404 ifp->if_ierrors++; 1405 return; 1406 } 1407 } else { 1408 1409 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1410 if (mnew == NULL) { 1411 ifp->if_ierrors++; 1412 return; 1413 } 1414 1415 rbuf = wpi_alloc_rbuf(sc); 1416 KASSERT(rbuf != NULL); 1417 1418 /* attach Rx buffer to mbuf */ 1419 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1420 rbuf); 1421 mnew->m_flags |= M_EXT_RW; 1422 1423 m = data->m; 1424 data->m = mnew; 1425 1426 /* update Rx descriptor */ 1427 ring->desc[ring->cur] = htole32(rbuf->paddr); 1428 1429 m->m_data = (char*)m->m_data + data_off; 1430 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1431 } 1432 1433 /* finalize mbuf */ 1434 m->m_pkthdr.rcvif = ifp; 1435 1436 if (ic->ic_state == IEEE80211_S_SCAN) 1437 wpi_fix_channel(ic, m); 1438 1439 #if NBPFILTER > 0 1440 if (sc->sc_drvbpf != NULL) { 1441 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1442 1443 tap->wr_flags = 0; 1444 tap->wr_chan_freq = 1445 htole16(ic->ic_channels[head->chan].ic_freq); 1446 tap->wr_chan_flags = 1447 htole16(ic->ic_channels[head->chan].ic_flags); 1448 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1449 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1450 tap->wr_tsft = tail->tstamp; 1451 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1452 switch (head->rate) { 1453 /* CCK rates */ 1454 case 10: tap->wr_rate = 2; break; 1455 case 20: tap->wr_rate = 4; break; 1456 case 55: tap->wr_rate = 11; break; 1457 case 110: tap->wr_rate = 22; break; 1458 /* OFDM rates */ 1459 case 0xd: tap->wr_rate = 12; break; 1460 case 0xf: tap->wr_rate = 18; break; 1461 case 0x5: tap->wr_rate = 24; break; 1462 case 0x7: tap->wr_rate = 36; break; 1463 case 0x9: tap->wr_rate = 48; break; 1464 case 0xb: tap->wr_rate = 72; break; 1465 case 0x1: tap->wr_rate = 96; break; 1466 case 0x3: tap->wr_rate = 108; break; 1467 /* unknown rate: should not happen */ 1468 default: tap->wr_rate = 0; 1469 } 1470 if (le16toh(head->flags) & 0x4) 1471 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1472 1473 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1474 } 1475 #endif 1476 1477 /* grab a reference to the source node */ 1478 wh = mtod(m, struct ieee80211_frame *); 1479 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1480 1481 /* send the frame to the 802.11 layer */ 1482 ieee80211_input(ic, m, ni, stat->rssi, 0); 1483 1484 /* release node reference */ 1485 ieee80211_free_node(ni); 1486 } 1487 1488 static void 1489 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1490 { 1491 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1492 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1493 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1494 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1495 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1496 1497 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1498 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1499 stat->nkill, stat->rate, le32toh(stat->duration), 1500 le32toh(stat->status))); 1501 1502 /* 1503 * Update rate control statistics for the node. 1504 * XXX we should not count mgmt frames since they're always sent at 1505 * the lowest available bit-rate. 1506 */ 1507 wn->amn.amn_txcnt++; 1508 if (stat->ntries > 0) { 1509 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1510 wn->amn.amn_retrycnt++; 1511 } 1512 1513 if ((le32toh(stat->status) & 0xff) != 1) 1514 ifp->if_oerrors++; 1515 else 1516 ifp->if_opackets++; 1517 1518 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1519 m_freem(txdata->m); 1520 txdata->m = NULL; 1521 ieee80211_free_node(txdata->ni); 1522 txdata->ni = NULL; 1523 1524 ring->queued--; 1525 1526 sc->sc_tx_timer = 0; 1527 ifp->if_flags &= ~IFF_OACTIVE; 1528 wpi_start(ifp); 1529 } 1530 1531 static void 1532 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1533 { 1534 struct wpi_tx_ring *ring = &sc->cmdq; 1535 struct wpi_tx_data *data; 1536 1537 if ((desc->qid & 7) != 4) 1538 return; /* not a command ack */ 1539 1540 data = &ring->data[desc->idx]; 1541 1542 /* if the command was mapped in a mbuf, free it */ 1543 if (data->m != NULL) { 1544 bus_dmamap_unload(sc->sc_dmat, data->map); 1545 m_freem(data->m); 1546 data->m = NULL; 1547 } 1548 1549 wakeup(&ring->cmd[desc->idx]); 1550 } 1551 1552 static void 1553 wpi_notif_intr(struct wpi_softc *sc) 1554 { 1555 struct ieee80211com *ic = &sc->sc_ic; 1556 struct ifnet *ifp = ic->ic_ifp; 1557 struct wpi_rx_desc *desc; 1558 struct wpi_rx_data *data; 1559 uint32_t hw; 1560 1561 hw = le32toh(sc->shared->next); 1562 while (sc->rxq.cur != hw) { 1563 data = &sc->rxq.data[sc->rxq.cur]; 1564 1565 desc = mtod(data->m, struct wpi_rx_desc *); 1566 1567 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1568 "len=%d\n", desc->qid, desc->idx, desc->flags, 1569 desc->type, le32toh(desc->len))); 1570 1571 if (!(desc->qid & 0x80)) /* reply to a command */ 1572 wpi_cmd_intr(sc, desc); 1573 1574 switch (desc->type) { 1575 case WPI_RX_DONE: 1576 /* a 802.11 frame was received */ 1577 wpi_rx_intr(sc, desc, data); 1578 break; 1579 1580 case WPI_TX_DONE: 1581 /* a 802.11 frame has been transmitted */ 1582 wpi_tx_intr(sc, desc); 1583 break; 1584 1585 case WPI_UC_READY: 1586 { 1587 struct wpi_ucode_info *uc = 1588 (struct wpi_ucode_info *)(desc + 1); 1589 1590 /* the microcontroller is ready */ 1591 DPRINTF(("microcode alive notification version %x " 1592 "alive %x\n", le32toh(uc->version), 1593 le32toh(uc->valid))); 1594 1595 if (le32toh(uc->valid) != 1) { 1596 aprint_error("%s: microcontroller " 1597 "initialization failed\n", 1598 sc->sc_dev.dv_xname); 1599 } 1600 break; 1601 } 1602 case WPI_STATE_CHANGED: 1603 { 1604 uint32_t *status = (uint32_t *)(desc + 1); 1605 1606 /* enabled/disabled notification */ 1607 DPRINTF(("state changed to %x\n", le32toh(*status))); 1608 1609 if (le32toh(*status) & 1) { 1610 /* the radio button has to be pushed */ 1611 aprint_error("%s: Radio transmitter is off\n", 1612 sc->sc_dev.dv_xname); 1613 /* turn the interface down */ 1614 ifp->if_flags &= ~IFF_UP; 1615 wpi_stop(ifp, 1); 1616 return; /* no further processing */ 1617 } 1618 break; 1619 } 1620 case WPI_START_SCAN: 1621 { 1622 struct wpi_start_scan *scan = 1623 (struct wpi_start_scan *)(desc + 1); 1624 1625 DPRINTFN(2, ("scanning channel %d status %x\n", 1626 scan->chan, le32toh(scan->status))); 1627 1628 /* fix current channel */ 1629 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1630 break; 1631 } 1632 case WPI_STOP_SCAN: 1633 { 1634 struct wpi_stop_scan *scan = 1635 (struct wpi_stop_scan *)(desc + 1); 1636 1637 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1638 scan->nchan, scan->status, scan->chan)); 1639 1640 if (scan->status == 1 && scan->chan <= 14) { 1641 /* 1642 * We just finished scanning 802.11g channels, 1643 * start scanning 802.11a ones. 1644 */ 1645 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1646 break; 1647 } 1648 sc->is_scanning = false; 1649 ieee80211_end_scan(ic); 1650 break; 1651 } 1652 } 1653 1654 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1655 } 1656 1657 /* tell the firmware what we have processed */ 1658 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1659 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1660 } 1661 1662 static int 1663 wpi_intr(void *arg) 1664 { 1665 struct wpi_softc *sc = arg; 1666 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1667 uint32_t r; 1668 1669 r = WPI_READ(sc, WPI_INTR); 1670 if (r == 0 || r == 0xffffffff) 1671 return 0; /* not for us */ 1672 1673 DPRINTFN(5, ("interrupt reg %x\n", r)); 1674 1675 /* disable interrupts */ 1676 WPI_WRITE(sc, WPI_MASK, 0); 1677 /* ack interrupts */ 1678 WPI_WRITE(sc, WPI_INTR, r); 1679 1680 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1681 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1682 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1683 wpi_stop(sc->sc_ic.ic_ifp, 1); 1684 return 1; 1685 } 1686 1687 if (r & WPI_RX_INTR) 1688 wpi_notif_intr(sc); 1689 1690 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1691 wakeup(sc); 1692 1693 /* re-enable interrupts */ 1694 if (ifp->if_flags & IFF_UP) 1695 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1696 1697 return 1; 1698 } 1699 1700 static uint8_t 1701 wpi_plcp_signal(int rate) 1702 { 1703 switch (rate) { 1704 /* CCK rates (returned values are device-dependent) */ 1705 case 2: return 10; 1706 case 4: return 20; 1707 case 11: return 55; 1708 case 22: return 110; 1709 1710 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1711 /* R1-R4, (u)ral is R4-R1 */ 1712 case 12: return 0xd; 1713 case 18: return 0xf; 1714 case 24: return 0x5; 1715 case 36: return 0x7; 1716 case 48: return 0x9; 1717 case 72: return 0xb; 1718 case 96: return 0x1; 1719 case 108: return 0x3; 1720 1721 /* unsupported rates (should not get there) */ 1722 default: return 0; 1723 } 1724 } 1725 1726 /* quickly determine if a given rate is CCK or OFDM */ 1727 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1728 1729 static int 1730 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1731 int ac) 1732 { 1733 struct ieee80211com *ic = &sc->sc_ic; 1734 struct wpi_tx_ring *ring = &sc->txq[ac]; 1735 struct wpi_tx_desc *desc; 1736 struct wpi_tx_data *data; 1737 struct wpi_tx_cmd *cmd; 1738 struct wpi_cmd_data *tx; 1739 struct ieee80211_frame *wh; 1740 struct ieee80211_key *k; 1741 const struct chanAccParams *cap; 1742 struct mbuf *mnew; 1743 int i, error, rate, hdrlen, noack = 0; 1744 1745 desc = &ring->desc[ring->cur]; 1746 data = &ring->data[ring->cur]; 1747 1748 wh = mtod(m0, struct ieee80211_frame *); 1749 1750 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1751 cap = &ic->ic_wme.wme_chanParams; 1752 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1753 } 1754 1755 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1756 k = ieee80211_crypto_encap(ic, ni, m0); 1757 if (k == NULL) { 1758 m_freem(m0); 1759 return ENOBUFS; 1760 } 1761 1762 /* packet header may have moved, reset our local pointer */ 1763 wh = mtod(m0, struct ieee80211_frame *); 1764 } 1765 1766 hdrlen = ieee80211_anyhdrsize(wh); 1767 1768 /* pickup a rate */ 1769 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1770 IEEE80211_FC0_TYPE_MGT) { 1771 /* mgmt frames are sent at the lowest available bit-rate */ 1772 rate = ni->ni_rates.rs_rates[0]; 1773 } else { 1774 if (ic->ic_fixed_rate != -1) { 1775 rate = ic->ic_sup_rates[ic->ic_curmode]. 1776 rs_rates[ic->ic_fixed_rate]; 1777 } else 1778 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1779 } 1780 rate &= IEEE80211_RATE_VAL; 1781 1782 1783 #if NBPFILTER > 0 1784 if (sc->sc_drvbpf != NULL) { 1785 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1786 1787 tap->wt_flags = 0; 1788 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1789 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1790 tap->wt_rate = rate; 1791 tap->wt_hwqueue = ac; 1792 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1793 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1794 1795 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1796 } 1797 #endif 1798 1799 cmd = &ring->cmd[ring->cur]; 1800 cmd->code = WPI_CMD_TX_DATA; 1801 cmd->flags = 0; 1802 cmd->qid = ring->qid; 1803 cmd->idx = ring->cur; 1804 1805 tx = (struct wpi_cmd_data *)cmd->data; 1806 tx->flags = 0; 1807 1808 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1809 tx->flags |= htole32(WPI_TX_NEED_ACK); 1810 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1811 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1812 1813 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1814 1815 /* retrieve destination node's id */ 1816 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1817 WPI_ID_BSS; 1818 1819 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1820 IEEE80211_FC0_TYPE_MGT) { 1821 /* tell h/w to set timestamp in probe responses */ 1822 if ((wh->i_fc[0] & 1823 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1824 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1825 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1826 1827 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1828 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1829 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1830 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1831 tx->timeout = htole16(3); 1832 else 1833 tx->timeout = htole16(2); 1834 } else 1835 tx->timeout = htole16(0); 1836 1837 tx->rate = wpi_plcp_signal(rate); 1838 1839 /* be very persistant at sending frames out */ 1840 tx->rts_ntries = 7; 1841 tx->data_ntries = 15; 1842 1843 tx->ofdm_mask = 0xff; 1844 tx->cck_mask = 0xf; 1845 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1846 1847 tx->len = htole16(m0->m_pkthdr.len); 1848 1849 /* save and trim IEEE802.11 header */ 1850 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 1851 m_adj(m0, hdrlen); 1852 1853 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1854 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1855 if (error != 0 && error != EFBIG) { 1856 aprint_error("%s: could not map mbuf (error %d)\n", 1857 sc->sc_dev.dv_xname, error); 1858 m_freem(m0); 1859 return error; 1860 } 1861 if (error != 0) { 1862 /* too many fragments, linearize */ 1863 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1864 if (mnew == NULL) { 1865 m_freem(m0); 1866 return ENOMEM; 1867 } 1868 1869 M_COPY_PKTHDR(mnew, m0); 1870 if (m0->m_pkthdr.len > MHLEN) { 1871 MCLGET(mnew, M_DONTWAIT); 1872 if (!(mnew->m_flags & M_EXT)) { 1873 m_freem(m0); 1874 m_freem(mnew); 1875 return ENOMEM; 1876 } 1877 } 1878 1879 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1880 m_freem(m0); 1881 mnew->m_len = mnew->m_pkthdr.len; 1882 m0 = mnew; 1883 1884 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1885 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1886 if (error != 0) { 1887 aprint_error("%s: could not map mbuf (error %d)\n", 1888 sc->sc_dev.dv_xname, error); 1889 m_freem(m0); 1890 return error; 1891 } 1892 } 1893 1894 data->m = m0; 1895 data->ni = ni; 1896 1897 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1898 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1899 1900 /* first scatter/gather segment is used by the tx data command */ 1901 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1902 (1 + data->map->dm_nsegs) << 24); 1903 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1904 ring->cur * sizeof (struct wpi_tx_cmd)); 1905 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 1906 ((hdrlen + 3) & ~3)); 1907 1908 for (i = 1; i <= data->map->dm_nsegs; i++) { 1909 desc->segs[i].addr = 1910 htole32(data->map->dm_segs[i - 1].ds_addr); 1911 desc->segs[i].len = 1912 htole32(data->map->dm_segs[i - 1].ds_len); 1913 } 1914 1915 ring->queued++; 1916 1917 /* kick ring */ 1918 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1919 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1920 1921 return 0; 1922 } 1923 1924 static void 1925 wpi_start(struct ifnet *ifp) 1926 { 1927 struct wpi_softc *sc = ifp->if_softc; 1928 struct ieee80211com *ic = &sc->sc_ic; 1929 struct ieee80211_node *ni; 1930 struct ether_header *eh; 1931 struct mbuf *m0; 1932 int ac; 1933 1934 /* 1935 * net80211 may still try to send management frames even if the 1936 * IFF_RUNNING flag is not set... 1937 */ 1938 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1939 return; 1940 1941 for (;;) { 1942 IF_DEQUEUE(&ic->ic_mgtq, m0); 1943 if (m0 != NULL) { 1944 1945 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1946 m0->m_pkthdr.rcvif = NULL; 1947 1948 /* management frames go into ring 0 */ 1949 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1950 ifp->if_oerrors++; 1951 continue; 1952 } 1953 #if NBPFILTER > 0 1954 if (ic->ic_rawbpf != NULL) 1955 bpf_mtap(ic->ic_rawbpf, m0); 1956 #endif 1957 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1958 ifp->if_oerrors++; 1959 break; 1960 } 1961 } else { 1962 if (ic->ic_state != IEEE80211_S_RUN) 1963 break; 1964 IFQ_POLL(&ifp->if_snd, m0); 1965 if (m0 == NULL) 1966 break; 1967 1968 if (m0->m_len < sizeof (*eh) && 1969 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 1970 ifp->if_oerrors++; 1971 continue; 1972 } 1973 eh = mtod(m0, struct ether_header *); 1974 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1975 if (ni == NULL) { 1976 m_freem(m0); 1977 ifp->if_oerrors++; 1978 continue; 1979 } 1980 1981 /* classify mbuf so we can find which tx ring to use */ 1982 if (ieee80211_classify(ic, m0, ni) != 0) { 1983 m_freem(m0); 1984 ieee80211_free_node(ni); 1985 ifp->if_oerrors++; 1986 continue; 1987 } 1988 1989 /* no QoS encapsulation for EAPOL frames */ 1990 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 1991 M_WME_GETAC(m0) : WME_AC_BE; 1992 1993 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 1994 /* there is no place left in this ring */ 1995 ifp->if_flags |= IFF_OACTIVE; 1996 break; 1997 } 1998 IFQ_DEQUEUE(&ifp->if_snd, m0); 1999 #if NBPFILTER > 0 2000 if (ifp->if_bpf != NULL) 2001 bpf_mtap(ifp->if_bpf, m0); 2002 #endif 2003 m0 = ieee80211_encap(ic, m0, ni); 2004 if (m0 == NULL) { 2005 ieee80211_free_node(ni); 2006 ifp->if_oerrors++; 2007 continue; 2008 } 2009 #if NBPFILTER > 0 2010 if (ic->ic_rawbpf != NULL) 2011 bpf_mtap(ic->ic_rawbpf, m0); 2012 #endif 2013 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 2014 ieee80211_free_node(ni); 2015 ifp->if_oerrors++; 2016 break; 2017 } 2018 } 2019 2020 sc->sc_tx_timer = 5; 2021 ifp->if_timer = 1; 2022 } 2023 } 2024 2025 static void 2026 wpi_watchdog(struct ifnet *ifp) 2027 { 2028 struct wpi_softc *sc = ifp->if_softc; 2029 2030 ifp->if_timer = 0; 2031 2032 if (sc->sc_tx_timer > 0) { 2033 if (--sc->sc_tx_timer == 0) { 2034 aprint_error("%s: device timeout\n", 2035 sc->sc_dev.dv_xname); 2036 ifp->if_oerrors++; 2037 ifp->if_flags &= ~IFF_UP; 2038 wpi_stop(ifp, 1); 2039 return; 2040 } 2041 ifp->if_timer = 1; 2042 } 2043 2044 ieee80211_watchdog(&sc->sc_ic); 2045 } 2046 2047 static int 2048 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2049 { 2050 #define IS_RUNNING(ifp) \ 2051 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2052 2053 struct wpi_softc *sc = ifp->if_softc; 2054 struct ieee80211com *ic = &sc->sc_ic; 2055 int s, error = 0; 2056 2057 s = splnet(); 2058 2059 switch (cmd) { 2060 case SIOCSIFFLAGS: 2061 if (ifp->if_flags & IFF_UP) { 2062 if (!(ifp->if_flags & IFF_RUNNING)) 2063 wpi_init(ifp); 2064 } else { 2065 if (ifp->if_flags & IFF_RUNNING) 2066 wpi_stop(ifp, 1); 2067 } 2068 break; 2069 2070 case SIOCADDMULTI: 2071 case SIOCDELMULTI: 2072 /* XXX no h/w multicast filter? --dyoung */ 2073 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2074 /* setup multicast filter, etc */ 2075 error = 0; 2076 } 2077 break; 2078 2079 default: 2080 error = ieee80211_ioctl(ic, cmd, data); 2081 } 2082 2083 if (error == ENETRESET) { 2084 if (IS_RUNNING(ifp) && 2085 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2086 wpi_init(ifp); 2087 error = 0; 2088 } 2089 2090 splx(s); 2091 return error; 2092 2093 #undef IS_RUNNING 2094 } 2095 2096 /* 2097 * Extract various information from EEPROM. 2098 */ 2099 static void 2100 wpi_read_eeprom(struct wpi_softc *sc) 2101 { 2102 struct ieee80211com *ic = &sc->sc_ic; 2103 char domain[4]; 2104 int i; 2105 2106 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2107 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2108 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2109 2110 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2111 sc->type)); 2112 2113 /* read and print regulatory domain */ 2114 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2115 aprint_normal(", %.4s", domain); 2116 2117 /* read and print MAC address */ 2118 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2119 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2120 2121 /* read the list of authorized channels */ 2122 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2123 wpi_read_eeprom_channels(sc, i); 2124 2125 /* read the list of power groups */ 2126 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2127 wpi_read_eeprom_group(sc, i); 2128 } 2129 2130 static void 2131 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2132 { 2133 struct ieee80211com *ic = &sc->sc_ic; 2134 const struct wpi_chan_band *band = &wpi_bands[n]; 2135 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2136 int chan, i; 2137 2138 wpi_read_prom_data(sc, band->addr, channels, 2139 band->nchan * sizeof (struct wpi_eeprom_chan)); 2140 2141 for (i = 0; i < band->nchan; i++) { 2142 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2143 continue; 2144 2145 chan = band->chan[i]; 2146 2147 if (n == 0) { /* 2GHz band */ 2148 ic->ic_channels[chan].ic_freq = 2149 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2150 ic->ic_channels[chan].ic_flags = 2151 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2152 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2153 2154 } else { /* 5GHz band */ 2155 /* 2156 * Some 3945abg adapters support channels 7, 8, 11 2157 * and 12 in the 2GHz *and* 5GHz bands. 2158 * Because of limitations in our net80211(9) stack, 2159 * we can't support these channels in 5GHz band. 2160 */ 2161 if (chan <= 14) 2162 continue; 2163 2164 ic->ic_channels[chan].ic_freq = 2165 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2166 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2167 } 2168 2169 /* is active scan allowed on this channel? */ 2170 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2171 ic->ic_channels[chan].ic_flags |= 2172 IEEE80211_CHAN_PASSIVE; 2173 } 2174 2175 /* save maximum allowed power for this channel */ 2176 sc->maxpwr[chan] = channels[i].maxpwr; 2177 2178 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2179 chan, channels[i].flags, sc->maxpwr[chan])); 2180 } 2181 } 2182 2183 static void 2184 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2185 { 2186 struct wpi_power_group *group = &sc->groups[n]; 2187 struct wpi_eeprom_group rgroup; 2188 int i; 2189 2190 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2191 sizeof rgroup); 2192 2193 /* save power group information */ 2194 group->chan = rgroup.chan; 2195 group->maxpwr = rgroup.maxpwr; 2196 /* temperature at which the samples were taken */ 2197 group->temp = (int16_t)le16toh(rgroup.temp); 2198 2199 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2200 group->chan, group->maxpwr, group->temp)); 2201 2202 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2203 group->samples[i].index = rgroup.samples[i].index; 2204 group->samples[i].power = rgroup.samples[i].power; 2205 2206 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2207 group->samples[i].index, group->samples[i].power)); 2208 } 2209 } 2210 2211 /* 2212 * Send a command to the firmware. 2213 */ 2214 static int 2215 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2216 { 2217 struct wpi_tx_ring *ring = &sc->cmdq; 2218 struct wpi_tx_desc *desc; 2219 struct wpi_tx_cmd *cmd; 2220 2221 KASSERT(size <= sizeof cmd->data); 2222 2223 desc = &ring->desc[ring->cur]; 2224 cmd = &ring->cmd[ring->cur]; 2225 2226 cmd->code = code; 2227 cmd->flags = 0; 2228 cmd->qid = ring->qid; 2229 cmd->idx = ring->cur; 2230 memcpy(cmd->data, buf, size); 2231 2232 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2233 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2234 ring->cur * sizeof (struct wpi_tx_cmd)); 2235 desc->segs[0].len = htole32(4 + size); 2236 2237 /* kick cmd ring */ 2238 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2239 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2240 2241 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2242 } 2243 2244 static int 2245 wpi_wme_update(struct ieee80211com *ic) 2246 { 2247 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2248 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2249 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2250 const struct wmeParams *wmep; 2251 struct wpi_wme_setup wme; 2252 int ac; 2253 2254 /* don't override default WME values if WME is not actually enabled */ 2255 if (!(ic->ic_flags & IEEE80211_F_WME)) 2256 return 0; 2257 2258 wme.flags = 0; 2259 for (ac = 0; ac < WME_NUM_AC; ac++) { 2260 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2261 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2262 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2263 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2264 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2265 2266 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2267 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2268 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2269 } 2270 2271 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2272 #undef WPI_USEC 2273 #undef WPI_EXP2 2274 } 2275 2276 /* 2277 * Configure h/w multi-rate retries. 2278 */ 2279 static int 2280 wpi_mrr_setup(struct wpi_softc *sc) 2281 { 2282 struct ieee80211com *ic = &sc->sc_ic; 2283 struct wpi_mrr_setup mrr; 2284 int i, error; 2285 2286 /* CCK rates (not used with 802.11a) */ 2287 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2288 mrr.rates[i].flags = 0; 2289 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2290 /* fallback to the immediate lower CCK rate (if any) */ 2291 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2292 /* try one time at this rate before falling back to "next" */ 2293 mrr.rates[i].ntries = 1; 2294 } 2295 2296 /* OFDM rates (not used with 802.11b) */ 2297 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2298 mrr.rates[i].flags = 0; 2299 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2300 /* fallback to the immediate lower rate (if any) */ 2301 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2302 mrr.rates[i].next = (i == WPI_OFDM6) ? 2303 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2304 WPI_OFDM6 : WPI_CCK2) : 2305 i - 1; 2306 /* try one time at this rate before falling back to "next" */ 2307 mrr.rates[i].ntries = 1; 2308 } 2309 2310 /* setup MRR for control frames */ 2311 mrr.which = htole32(WPI_MRR_CTL); 2312 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2313 if (error != 0) { 2314 aprint_error("%s: could not setup MRR for control frames\n", 2315 sc->sc_dev.dv_xname); 2316 return error; 2317 } 2318 2319 /* setup MRR for data frames */ 2320 mrr.which = htole32(WPI_MRR_DATA); 2321 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2322 if (error != 0) { 2323 aprint_error("%s: could not setup MRR for data frames\n", 2324 sc->sc_dev.dv_xname); 2325 return error; 2326 } 2327 2328 return 0; 2329 } 2330 2331 static void 2332 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2333 { 2334 struct wpi_cmd_led led; 2335 2336 led.which = which; 2337 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2338 led.off = off; 2339 led.on = on; 2340 2341 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2342 } 2343 2344 static void 2345 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2346 { 2347 struct wpi_cmd_tsf tsf; 2348 uint64_t val, mod; 2349 2350 memset(&tsf, 0, sizeof tsf); 2351 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2352 tsf.bintval = htole16(ni->ni_intval); 2353 tsf.lintval = htole16(10); 2354 2355 /* compute remaining time until next beacon */ 2356 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2357 mod = le64toh(tsf.tstamp) % val; 2358 tsf.binitval = htole32((uint32_t)(val - mod)); 2359 2360 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2361 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2362 2363 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2364 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2365 } 2366 2367 /* 2368 * Update Tx power to match what is defined for channel `c'. 2369 */ 2370 static int 2371 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2372 { 2373 struct ieee80211com *ic = &sc->sc_ic; 2374 struct wpi_power_group *group; 2375 struct wpi_cmd_txpower txpower; 2376 u_int chan; 2377 int i; 2378 2379 /* get channel number */ 2380 chan = ieee80211_chan2ieee(ic, c); 2381 2382 /* find the power group to which this channel belongs */ 2383 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2384 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2385 if (chan <= group->chan) 2386 break; 2387 } else 2388 group = &sc->groups[0]; 2389 2390 memset(&txpower, 0, sizeof txpower); 2391 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2392 txpower.chan = htole16(chan); 2393 2394 /* set Tx power for all OFDM and CCK rates */ 2395 for (i = 0; i <= 11 ; i++) { 2396 /* retrieve Tx power for this channel/rate combination */ 2397 int idx = wpi_get_power_index(sc, group, c, 2398 wpi_ridx_to_rate[i]); 2399 2400 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2401 2402 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2403 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2404 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2405 } else { 2406 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2407 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2408 } 2409 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2410 wpi_ridx_to_rate[i], idx)); 2411 } 2412 2413 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2414 } 2415 2416 /* 2417 * Determine Tx power index for a given channel/rate combination. 2418 * This takes into account the regulatory information from EEPROM and the 2419 * current temperature. 2420 */ 2421 static int 2422 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2423 struct ieee80211_channel *c, int rate) 2424 { 2425 /* fixed-point arithmetic division using a n-bit fractional part */ 2426 #define fdivround(a, b, n) \ 2427 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2428 2429 /* linear interpolation */ 2430 #define interpolate(x, x1, y1, x2, y2, n) \ 2431 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2432 2433 struct ieee80211com *ic = &sc->sc_ic; 2434 struct wpi_power_sample *sample; 2435 int pwr, idx; 2436 u_int chan; 2437 2438 /* get channel number */ 2439 chan = ieee80211_chan2ieee(ic, c); 2440 2441 /* default power is group's maximum power - 3dB */ 2442 pwr = group->maxpwr / 2; 2443 2444 /* decrease power for highest OFDM rates to reduce distortion */ 2445 switch (rate) { 2446 case 72: /* 36Mb/s */ 2447 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2448 break; 2449 case 96: /* 48Mb/s */ 2450 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2451 break; 2452 case 108: /* 54Mb/s */ 2453 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2454 break; 2455 } 2456 2457 /* never exceed channel's maximum allowed Tx power */ 2458 pwr = min(pwr, sc->maxpwr[chan]); 2459 2460 /* retrieve power index into gain tables from samples */ 2461 for (sample = group->samples; sample < &group->samples[3]; sample++) 2462 if (pwr > sample[1].power) 2463 break; 2464 /* fixed-point linear interpolation using a 19-bit fractional part */ 2465 idx = interpolate(pwr, sample[0].power, sample[0].index, 2466 sample[1].power, sample[1].index, 19); 2467 2468 /* 2469 * Adjust power index based on current temperature: 2470 * - if cooler than factory-calibrated: decrease output power 2471 * - if warmer than factory-calibrated: increase output power 2472 */ 2473 idx -= (sc->temp - group->temp) * 11 / 100; 2474 2475 /* decrease power for CCK rates (-5dB) */ 2476 if (!WPI_RATE_IS_OFDM(rate)) 2477 idx += 10; 2478 2479 /* keep power index in a valid range */ 2480 if (idx < 0) 2481 return 0; 2482 if (idx > WPI_MAX_PWR_INDEX) 2483 return WPI_MAX_PWR_INDEX; 2484 return idx; 2485 2486 #undef interpolate 2487 #undef fdivround 2488 } 2489 2490 /* 2491 * Build a beacon frame that the firmware will broadcast periodically in 2492 * IBSS or HostAP modes. 2493 */ 2494 static int 2495 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2496 { 2497 struct ieee80211com *ic = &sc->sc_ic; 2498 struct wpi_tx_ring *ring = &sc->cmdq; 2499 struct wpi_tx_desc *desc; 2500 struct wpi_tx_data *data; 2501 struct wpi_tx_cmd *cmd; 2502 struct wpi_cmd_beacon *bcn; 2503 struct ieee80211_beacon_offsets bo; 2504 struct mbuf *m0; 2505 int error; 2506 2507 desc = &ring->desc[ring->cur]; 2508 data = &ring->data[ring->cur]; 2509 2510 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2511 if (m0 == NULL) { 2512 aprint_error("%s: could not allocate beacon frame\n", 2513 sc->sc_dev.dv_xname); 2514 return ENOMEM; 2515 } 2516 2517 cmd = &ring->cmd[ring->cur]; 2518 cmd->code = WPI_CMD_SET_BEACON; 2519 cmd->flags = 0; 2520 cmd->qid = ring->qid; 2521 cmd->idx = ring->cur; 2522 2523 bcn = (struct wpi_cmd_beacon *)cmd->data; 2524 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2525 bcn->id = WPI_ID_BROADCAST; 2526 bcn->ofdm_mask = 0xff; 2527 bcn->cck_mask = 0x0f; 2528 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2529 bcn->len = htole16(m0->m_pkthdr.len); 2530 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2531 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2532 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2533 2534 /* save and trim IEEE802.11 header */ 2535 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2536 m_adj(m0, sizeof (struct ieee80211_frame)); 2537 2538 /* assume beacon frame is contiguous */ 2539 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2540 BUS_DMA_READ | BUS_DMA_NOWAIT); 2541 if (error) { 2542 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2543 m_freem(m0); 2544 return error; 2545 } 2546 2547 data->m = m0; 2548 2549 /* first scatter/gather segment is used by the beacon command */ 2550 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2551 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2552 ring->cur * sizeof (struct wpi_tx_cmd)); 2553 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2554 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2555 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2556 2557 /* kick cmd ring */ 2558 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2559 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2560 2561 return 0; 2562 } 2563 2564 static int 2565 wpi_auth(struct wpi_softc *sc) 2566 { 2567 struct ieee80211com *ic = &sc->sc_ic; 2568 struct ieee80211_node *ni = ic->ic_bss; 2569 struct wpi_node_info node; 2570 int error; 2571 2572 /* update adapter's configuration */ 2573 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2574 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2575 sc->config.flags = htole32(WPI_CONFIG_TSF); 2576 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2577 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2578 WPI_CONFIG_24GHZ); 2579 } 2580 switch (ic->ic_curmode) { 2581 case IEEE80211_MODE_11A: 2582 sc->config.cck_mask = 0; 2583 sc->config.ofdm_mask = 0x15; 2584 break; 2585 case IEEE80211_MODE_11B: 2586 sc->config.cck_mask = 0x03; 2587 sc->config.ofdm_mask = 0; 2588 break; 2589 default: /* assume 802.11b/g */ 2590 sc->config.cck_mask = 0x0f; 2591 sc->config.ofdm_mask = 0x15; 2592 } 2593 2594 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2595 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2596 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2597 sizeof (struct wpi_config), 1); 2598 if (error != 0) { 2599 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2600 return error; 2601 } 2602 2603 /* configuration has changed, set Tx power accordingly */ 2604 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2605 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2606 return error; 2607 } 2608 2609 /* add default node */ 2610 memset(&node, 0, sizeof node); 2611 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2612 node.id = WPI_ID_BSS; 2613 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2614 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2615 node.action = htole32(WPI_ACTION_SET_RATE); 2616 node.antenna = WPI_ANTENNA_BOTH; 2617 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2618 if (error != 0) { 2619 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2620 return error; 2621 } 2622 2623 return 0; 2624 } 2625 2626 /* 2627 * Send a scan request to the firmware. Since this command is huge, we map it 2628 * into a mbuf instead of using the pre-allocated set of commands. 2629 */ 2630 static int 2631 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2632 { 2633 struct ieee80211com *ic = &sc->sc_ic; 2634 struct wpi_tx_ring *ring = &sc->cmdq; 2635 struct wpi_tx_desc *desc; 2636 struct wpi_tx_data *data; 2637 struct wpi_tx_cmd *cmd; 2638 struct wpi_scan_hdr *hdr; 2639 struct wpi_scan_chan *chan; 2640 struct ieee80211_frame *wh; 2641 struct ieee80211_rateset *rs; 2642 struct ieee80211_channel *c; 2643 enum ieee80211_phymode mode; 2644 uint8_t *frm; 2645 int nrates, pktlen, error; 2646 2647 desc = &ring->desc[ring->cur]; 2648 data = &ring->data[ring->cur]; 2649 2650 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2651 if (data->m == NULL) { 2652 aprint_error("%s: could not allocate mbuf for scan command\n", 2653 sc->sc_dev.dv_xname); 2654 return ENOMEM; 2655 } 2656 2657 MCLGET(data->m, M_DONTWAIT); 2658 if (!(data->m->m_flags & M_EXT)) { 2659 m_freem(data->m); 2660 data->m = NULL; 2661 aprint_error("%s: could not allocate mbuf for scan command\n", 2662 sc->sc_dev.dv_xname); 2663 return ENOMEM; 2664 } 2665 2666 cmd = mtod(data->m, struct wpi_tx_cmd *); 2667 cmd->code = WPI_CMD_SCAN; 2668 cmd->flags = 0; 2669 cmd->qid = ring->qid; 2670 cmd->idx = ring->cur; 2671 2672 hdr = (struct wpi_scan_hdr *)cmd->data; 2673 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2674 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2675 hdr->id = WPI_ID_BROADCAST; 2676 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2677 2678 /* 2679 * Move to the next channel if no packets are received within 5 msecs 2680 * after sending the probe request (this helps to reduce the duration 2681 * of active scans). 2682 */ 2683 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2684 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2685 2686 if (flags & IEEE80211_CHAN_A) { 2687 hdr->crc_threshold = htole16(1); 2688 /* send probe requests at 6Mbps */ 2689 hdr->rate = wpi_plcp_signal(12); 2690 } else { 2691 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2692 /* send probe requests at 1Mbps */ 2693 hdr->rate = wpi_plcp_signal(2); 2694 } 2695 2696 /* for directed scans, firmware inserts the essid IE itself */ 2697 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2698 hdr->essid[0].len = ic->ic_des_esslen; 2699 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2700 2701 /* 2702 * Build a probe request frame. Most of the following code is a 2703 * copy & paste of what is done in net80211. 2704 */ 2705 wh = (struct ieee80211_frame *)(hdr + 1); 2706 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2707 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2708 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2709 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2710 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2711 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2712 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2713 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2714 2715 frm = (uint8_t *)(wh + 1); 2716 2717 /* add empty essid IE (firmware generates it for directed scans) */ 2718 *frm++ = IEEE80211_ELEMID_SSID; 2719 *frm++ = 0; 2720 2721 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2722 rs = &ic->ic_sup_rates[mode]; 2723 2724 /* add supported rates IE */ 2725 *frm++ = IEEE80211_ELEMID_RATES; 2726 nrates = rs->rs_nrates; 2727 if (nrates > IEEE80211_RATE_SIZE) 2728 nrates = IEEE80211_RATE_SIZE; 2729 *frm++ = nrates; 2730 memcpy(frm, rs->rs_rates, nrates); 2731 frm += nrates; 2732 2733 /* add supported xrates IE */ 2734 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2735 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2736 *frm++ = IEEE80211_ELEMID_XRATES; 2737 *frm++ = nrates; 2738 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2739 frm += nrates; 2740 } 2741 2742 /* setup length of probe request */ 2743 hdr->paylen = htole16(frm - (uint8_t *)wh); 2744 2745 chan = (struct wpi_scan_chan *)frm; 2746 for (c = &ic->ic_channels[1]; 2747 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2748 if ((c->ic_flags & flags) != flags) 2749 continue; 2750 2751 chan->chan = ieee80211_chan2ieee(ic, c); 2752 chan->flags = 0; 2753 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2754 chan->flags |= WPI_CHAN_ACTIVE; 2755 if (ic->ic_des_esslen != 0) 2756 chan->flags |= WPI_CHAN_DIRECT; 2757 } 2758 chan->dsp_gain = 0x6e; 2759 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2760 chan->rf_gain = 0x3b; 2761 chan->active = htole16(10); 2762 chan->passive = htole16(110); 2763 } else { 2764 chan->rf_gain = 0x28; 2765 chan->active = htole16(20); 2766 chan->passive = htole16(120); 2767 } 2768 hdr->nchan++; 2769 chan++; 2770 2771 frm += sizeof (struct wpi_scan_chan); 2772 } 2773 hdr->len = htole16(frm - (uint8_t *)hdr); 2774 pktlen = frm - (uint8_t *)cmd; 2775 2776 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2777 NULL, BUS_DMA_NOWAIT); 2778 if (error) { 2779 aprint_error("%s: could not map scan command\n", 2780 sc->sc_dev.dv_xname); 2781 m_freem(data->m); 2782 data->m = NULL; 2783 return error; 2784 } 2785 2786 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2787 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2788 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2789 2790 /* kick cmd ring */ 2791 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2792 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2793 2794 return 0; /* will be notified async. of failure/success */ 2795 } 2796 2797 static int 2798 wpi_config(struct wpi_softc *sc) 2799 { 2800 struct ieee80211com *ic = &sc->sc_ic; 2801 struct ifnet *ifp = ic->ic_ifp; 2802 struct wpi_power power; 2803 struct wpi_bluetooth bluetooth; 2804 struct wpi_node_info node; 2805 int error; 2806 2807 memset(&power, 0, sizeof power); 2808 power.flags = htole32(WPI_POWER_CAM | 0x8); 2809 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2810 if (error != 0) { 2811 aprint_error("%s: could not set power mode\n", 2812 sc->sc_dev.dv_xname); 2813 return error; 2814 } 2815 2816 /* configure bluetooth coexistence */ 2817 memset(&bluetooth, 0, sizeof bluetooth); 2818 bluetooth.flags = 3; 2819 bluetooth.lead = 0xaa; 2820 bluetooth.kill = 1; 2821 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2822 0); 2823 if (error != 0) { 2824 aprint_error( 2825 "%s: could not configure bluetooth coexistence\n", 2826 sc->sc_dev.dv_xname); 2827 return error; 2828 } 2829 2830 /* configure adapter */ 2831 memset(&sc->config, 0, sizeof (struct wpi_config)); 2832 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2833 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2834 /*set default channel*/ 2835 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2836 sc->config.flags = htole32(WPI_CONFIG_TSF); 2837 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2838 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2839 WPI_CONFIG_24GHZ); 2840 } 2841 sc->config.filter = 0; 2842 switch (ic->ic_opmode) { 2843 case IEEE80211_M_STA: 2844 sc->config.mode = WPI_MODE_STA; 2845 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2846 break; 2847 case IEEE80211_M_IBSS: 2848 case IEEE80211_M_AHDEMO: 2849 sc->config.mode = WPI_MODE_IBSS; 2850 break; 2851 case IEEE80211_M_HOSTAP: 2852 sc->config.mode = WPI_MODE_HOSTAP; 2853 break; 2854 case IEEE80211_M_MONITOR: 2855 sc->config.mode = WPI_MODE_MONITOR; 2856 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2857 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2858 break; 2859 } 2860 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2861 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2862 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2863 sizeof (struct wpi_config), 0); 2864 if (error != 0) { 2865 aprint_error("%s: configure command failed\n", 2866 sc->sc_dev.dv_xname); 2867 return error; 2868 } 2869 2870 /* configuration has changed, set Tx power accordingly */ 2871 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2872 aprint_error("%s: could not set Tx power\n", sc->sc_dev.dv_xname); 2873 return error; 2874 } 2875 2876 /* add broadcast node */ 2877 memset(&node, 0, sizeof node); 2878 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2879 node.id = WPI_ID_BROADCAST; 2880 node.rate = wpi_plcp_signal(2); 2881 node.action = htole32(WPI_ACTION_SET_RATE); 2882 node.antenna = WPI_ANTENNA_BOTH; 2883 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2884 if (error != 0) { 2885 aprint_error("%s: could not add broadcast node\n", 2886 sc->sc_dev.dv_xname); 2887 return error; 2888 } 2889 2890 if ((error = wpi_mrr_setup(sc)) != 0) { 2891 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2892 return error; 2893 } 2894 2895 return 0; 2896 } 2897 2898 static void 2899 wpi_stop_master(struct wpi_softc *sc) 2900 { 2901 uint32_t tmp; 2902 int ntries; 2903 2904 tmp = WPI_READ(sc, WPI_RESET); 2905 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2906 2907 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2908 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2909 return; /* already asleep */ 2910 2911 for (ntries = 0; ntries < 100; ntries++) { 2912 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2913 break; 2914 DELAY(10); 2915 } 2916 if (ntries == 100) { 2917 aprint_error("%s: timeout waiting for master\n", 2918 sc->sc_dev.dv_xname); 2919 } 2920 } 2921 2922 static int 2923 wpi_power_up(struct wpi_softc *sc) 2924 { 2925 uint32_t tmp; 2926 int ntries; 2927 2928 wpi_mem_lock(sc); 2929 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2930 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2931 wpi_mem_unlock(sc); 2932 2933 for (ntries = 0; ntries < 5000; ntries++) { 2934 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2935 break; 2936 DELAY(10); 2937 } 2938 if (ntries == 5000) { 2939 aprint_error("%s: timeout waiting for NIC to power up\n", 2940 sc->sc_dev.dv_xname); 2941 return ETIMEDOUT; 2942 } 2943 return 0; 2944 } 2945 2946 static int 2947 wpi_reset(struct wpi_softc *sc) 2948 { 2949 uint32_t tmp; 2950 int ntries; 2951 2952 /* clear any pending interrupts */ 2953 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2954 2955 tmp = WPI_READ(sc, WPI_PLL_CTL); 2956 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2957 2958 tmp = WPI_READ(sc, WPI_CHICKEN); 2959 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2960 2961 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2962 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2963 2964 /* wait for clock stabilization */ 2965 for (ntries = 0; ntries < 1000; ntries++) { 2966 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2967 break; 2968 DELAY(10); 2969 } 2970 if (ntries == 1000) { 2971 aprint_error("%s: timeout waiting for clock stabilization\n", 2972 sc->sc_dev.dv_xname); 2973 return ETIMEDOUT; 2974 } 2975 2976 /* initialize EEPROM */ 2977 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2978 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2979 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 2980 return EIO; 2981 } 2982 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2983 2984 return 0; 2985 } 2986 2987 static void 2988 wpi_hw_config(struct wpi_softc *sc) 2989 { 2990 uint32_t rev, hw; 2991 2992 /* voodoo from the reference driver */ 2993 hw = WPI_READ(sc, WPI_HWCONFIG); 2994 2995 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 2996 rev = PCI_REVISION(rev); 2997 if ((rev & 0xc0) == 0x40) 2998 hw |= WPI_HW_ALM_MB; 2999 else if (!(rev & 0x80)) 3000 hw |= WPI_HW_ALM_MM; 3001 3002 if (sc->cap == 0x80) 3003 hw |= WPI_HW_SKU_MRC; 3004 3005 hw &= ~WPI_HW_REV_D; 3006 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3007 hw |= WPI_HW_REV_D; 3008 3009 if (sc->type > 1) 3010 hw |= WPI_HW_TYPE_B; 3011 3012 DPRINTF(("setting h/w config %x\n", hw)); 3013 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3014 } 3015 3016 static int 3017 wpi_init(struct ifnet *ifp) 3018 { 3019 struct wpi_softc *sc = ifp->if_softc; 3020 struct ieee80211com *ic = &sc->sc_ic; 3021 uint32_t tmp; 3022 int qid, ntries, error; 3023 3024 wpi_stop(ifp,1); 3025 (void)wpi_reset(sc); 3026 3027 wpi_mem_lock(sc); 3028 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3029 DELAY(20); 3030 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3031 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3032 wpi_mem_unlock(sc); 3033 3034 (void)wpi_power_up(sc); 3035 wpi_hw_config(sc); 3036 3037 /* init Rx ring */ 3038 wpi_mem_lock(sc); 3039 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3040 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3041 offsetof(struct wpi_shared, next)); 3042 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3043 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3044 wpi_mem_unlock(sc); 3045 3046 /* init Tx rings */ 3047 wpi_mem_lock(sc); 3048 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3049 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3050 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3051 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3052 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3053 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3054 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3055 3056 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3057 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3058 3059 for (qid = 0; qid < 6; qid++) { 3060 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3061 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3062 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3063 } 3064 wpi_mem_unlock(sc); 3065 3066 /* clear "radio off" and "disable command" bits (reversed logic) */ 3067 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3068 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3069 3070 /* clear any pending interrupts */ 3071 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3072 /* enable interrupts */ 3073 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3074 3075 /* not sure why/if this is necessary... */ 3076 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3077 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3078 3079 if ((error = wpi_load_firmware(sc)) != 0) { 3080 aprint_error("%s: could not load firmware\n", sc->sc_dev.dv_xname); 3081 goto fail1; 3082 } 3083 3084 /* wait for thermal sensors to calibrate */ 3085 for (ntries = 0; ntries < 1000; ntries++) { 3086 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3087 break; 3088 DELAY(10); 3089 } 3090 if (ntries == 1000) { 3091 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 3092 sc->sc_dev.dv_xname); 3093 error = ETIMEDOUT; 3094 goto fail1; 3095 } 3096 3097 DPRINTF(("temperature %d\n", sc->temp)); 3098 3099 if ((error = wpi_config(sc)) != 0) { 3100 aprint_error("%s: could not configure device\n", 3101 sc->sc_dev.dv_xname); 3102 goto fail1; 3103 } 3104 3105 ifp->if_flags &= ~IFF_OACTIVE; 3106 ifp->if_flags |= IFF_RUNNING; 3107 3108 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3109 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3110 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3111 } 3112 else 3113 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3114 3115 return 0; 3116 3117 fail1: wpi_stop(ifp, 1); 3118 return error; 3119 } 3120 3121 3122 static void 3123 wpi_stop(struct ifnet *ifp, int disable) 3124 { 3125 struct wpi_softc *sc = ifp->if_softc; 3126 struct ieee80211com *ic = &sc->sc_ic; 3127 uint32_t tmp; 3128 int ac; 3129 3130 ifp->if_timer = sc->sc_tx_timer = 0; 3131 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3132 3133 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3134 3135 /* disable interrupts */ 3136 WPI_WRITE(sc, WPI_MASK, 0); 3137 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3138 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3139 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3140 3141 wpi_mem_lock(sc); 3142 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3143 wpi_mem_unlock(sc); 3144 3145 /* reset all Tx rings */ 3146 for (ac = 0; ac < 4; ac++) 3147 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3148 wpi_reset_tx_ring(sc, &sc->cmdq); 3149 3150 /* reset Rx ring */ 3151 wpi_reset_rx_ring(sc, &sc->rxq); 3152 3153 wpi_mem_lock(sc); 3154 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3155 wpi_mem_unlock(sc); 3156 3157 DELAY(5); 3158 3159 wpi_stop_master(sc); 3160 3161 tmp = WPI_READ(sc, WPI_RESET); 3162 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3163 } 3164 3165 static bool 3166 wpi_resume(device_t dv) 3167 { 3168 struct wpi_softc *sc = device_private(dv); 3169 3170 pci_disable_retry(sc->sc_pct, sc->sc_pcitag); 3171 (void)wpi_reset(sc); 3172 3173 return true; 3174 } 3175
Indexes created Thu Oct 02 01:09:59 GMT 2025