if_wpi.c revision 1.34
1 /* $NetBSD: if_wpi.c,v 1.34 2008/01/09 20:15:40 degroote 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 1.34 2008/01/09 20:15:40 degroote 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(device_t, struct cfdata *, void *); 95 static void wpi_attach(device_t, device_t, void *); 96 static int wpi_detach(device_t , 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 static int wpi_getrfkill(struct wpi_softc *); 168 static void wpi_sysctlattach(struct wpi_softc *); 169 170 CFATTACH_DECL_NEW(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 171 wpi_detach, NULL); 172 173 static int 174 wpi_match(device_t parent, struct cfdata *match __unused, void *aux) 175 { 176 struct pci_attach_args *pa = aux; 177 178 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 179 return 0; 180 181 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 182 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 183 return 1; 184 185 return 0; 186 } 187 188 /* Base Address Register */ 189 #define WPI_PCI_BAR0 0x10 190 191 static void 192 wpi_attach(device_t parent __unused, device_t self, void *aux) 193 { 194 struct wpi_softc *sc = device_private(self); 195 struct ieee80211com *ic = &sc->sc_ic; 196 struct ifnet *ifp = &sc->sc_ec.ec_if; 197 struct pci_attach_args *pa = aux; 198 const char *intrstr; 199 char devinfo[256]; 200 bus_space_tag_t memt; 201 bus_space_handle_t memh; 202 pci_intr_handle_t ih; 203 pcireg_t data; 204 int error, ac, revision; 205 206 sc->sc_dev = self; 207 sc->sc_pct = pa->pa_pc; 208 sc->sc_pcitag = pa->pa_tag; 209 210 callout_init(&sc->calib_to, 0); 211 callout_setfunc(&sc->calib_to, wpi_calib_timeout, sc); 212 213 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 214 revision = PCI_REVISION(pa->pa_class); 215 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 216 217 pci_disable_retry(pa->pa_pc, pa->pa_tag); 218 219 /* enable bus-mastering */ 220 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 221 data |= PCI_COMMAND_MASTER_ENABLE; 222 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 223 224 /* map the register window */ 225 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 226 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 227 if (error != 0) { 228 aprint_error_dev(self, "could not map memory space\n"); 229 return; 230 } 231 232 sc->sc_st = memt; 233 sc->sc_sh = memh; 234 sc->sc_dmat = pa->pa_dmat; 235 236 if (pci_intr_map(pa, &ih) != 0) { 237 aprint_error_dev(self, "could not map interrupt\n"); 238 return; 239 } 240 241 intrstr = pci_intr_string(sc->sc_pct, ih); 242 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 243 if (sc->sc_ih == NULL) { 244 aprint_error_dev(self, "could not establish interrupt"); 245 if (intrstr != NULL) 246 aprint_error(" at %s", intrstr); 247 aprint_error("\n"); 248 return; 249 } 250 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 251 252 if (wpi_reset(sc) != 0) { 253 aprint_error_dev(self, "could not reset adapter\n"); 254 return; 255 } 256 257 /* 258 * Allocate DMA memory for firmware transfers. 259 */ 260 if ((error = wpi_alloc_fwmem(sc)) != 0) 261 return; 262 263 /* 264 * Allocate shared page and Tx/Rx rings. 265 */ 266 if ((error = wpi_alloc_shared(sc)) != 0) { 267 aprint_error_dev(self, "could not allocate shared area\n"); 268 goto fail1; 269 } 270 271 if ((error = wpi_alloc_rpool(sc)) != 0) { 272 aprint_error_dev(self, "could not allocate Rx buffers\n"); 273 goto fail2; 274 } 275 276 for (ac = 0; ac < 4; ac++) { 277 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 278 if (error != 0) { 279 aprint_error_dev(self, "could not allocate Tx ring %d\n", ac); 280 goto fail3; 281 } 282 } 283 284 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 285 if (error != 0) { 286 aprint_error_dev(self, "could not allocate command ring\n"); 287 goto fail3; 288 } 289 290 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 291 aprint_error_dev(self, "could not allocate Rx ring\n"); 292 goto fail4; 293 } 294 295 ic->ic_ifp = ifp; 296 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 297 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 298 ic->ic_state = IEEE80211_S_INIT; 299 300 /* set device capabilities */ 301 ic->ic_caps = 302 IEEE80211_C_IBSS | /* IBSS mode support */ 303 IEEE80211_C_WPA | /* 802.11i */ 304 IEEE80211_C_MONITOR | /* monitor mode supported */ 305 IEEE80211_C_TXPMGT | /* tx power management */ 306 IEEE80211_C_SHSLOT | /* short slot time supported */ 307 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 308 IEEE80211_C_WME; /* 802.11e */ 309 310 /* read supported channels and MAC address from EEPROM */ 311 wpi_read_eeprom(sc); 312 313 /* set supported .11a, .11b, .11g rates */ 314 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 315 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 316 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 317 318 ic->ic_ibss_chan = &ic->ic_channels[0]; 319 320 ifp->if_softc = sc; 321 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 322 ifp->if_init = wpi_init; 323 ifp->if_stop = wpi_stop; 324 ifp->if_ioctl = wpi_ioctl; 325 ifp->if_start = wpi_start; 326 ifp->if_watchdog = wpi_watchdog; 327 IFQ_SET_READY(&ifp->if_snd); 328 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 329 330 if_attach(ifp); 331 ieee80211_ifattach(ic); 332 /* override default methods */ 333 ic->ic_node_alloc = wpi_node_alloc; 334 ic->ic_newassoc = wpi_newassoc; 335 ic->ic_wme.wme_update = wpi_wme_update; 336 337 /* override state transition machine */ 338 sc->sc_newstate = ic->ic_newstate; 339 ic->ic_newstate = wpi_newstate; 340 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 341 342 sc->amrr.amrr_min_success_threshold = 1; 343 sc->amrr.amrr_max_success_threshold = 15; 344 345 wpi_sysctlattach(sc); 346 347 if (!pmf_device_register(self, NULL, wpi_resume)) 348 aprint_error_dev(self, "couldn't establish power handler\n"); 349 else 350 pmf_class_network_register(self, ifp); 351 352 #if NBPFILTER > 0 353 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 354 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 355 &sc->sc_drvbpf); 356 357 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 358 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 359 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 360 361 sc->sc_txtap_len = sizeof sc->sc_txtapu; 362 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 363 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 364 #endif 365 366 ieee80211_announce(ic); 367 368 return; 369 370 fail4: wpi_free_tx_ring(sc, &sc->cmdq); 371 fail3: while (--ac >= 0) 372 wpi_free_tx_ring(sc, &sc->txq[ac]); 373 wpi_free_rpool(sc); 374 fail2: wpi_free_shared(sc); 375 fail1: wpi_free_fwmem(sc); 376 } 377 378 static int 379 wpi_detach(device_t self, int flags __unused) 380 { 381 struct wpi_softc *sc = device_private(self); 382 struct ifnet *ifp = sc->sc_ic.ic_ifp; 383 int ac; 384 385 wpi_stop(ifp, 1); 386 387 #if NBPFILTER > 0 388 if (ifp != NULL) 389 bpfdetach(ifp); 390 #endif 391 ieee80211_ifdetach(&sc->sc_ic); 392 if (ifp != NULL) 393 if_detach(ifp); 394 395 for (ac = 0; ac < 4; ac++) 396 wpi_free_tx_ring(sc, &sc->txq[ac]); 397 wpi_free_tx_ring(sc, &sc->cmdq); 398 wpi_free_rx_ring(sc, &sc->rxq); 399 wpi_free_rpool(sc); 400 wpi_free_shared(sc); 401 402 if (sc->sc_ih != NULL) { 403 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 404 sc->sc_ih = NULL; 405 } 406 407 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 408 409 return 0; 410 } 411 412 static int 413 wpi_dma_contig_alloc(bus_dma_tag_t tag, struct wpi_dma_info *dma, 414 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 415 { 416 int nsegs, error; 417 418 dma->tag = tag; 419 dma->size = size; 420 421 error = bus_dmamap_create(tag, size, 1, size, 0, flags, &dma->map); 422 if (error != 0) 423 goto fail; 424 425 error = bus_dmamem_alloc(tag, size, alignment, 0, &dma->seg, 1, &nsegs, 426 flags); 427 if (error != 0) 428 goto fail; 429 430 error = bus_dmamem_map(tag, &dma->seg, 1, size, &dma->vaddr, flags); 431 if (error != 0) 432 goto fail; 433 434 error = bus_dmamap_load(tag, dma->map, dma->vaddr, size, NULL, flags); 435 if (error != 0) 436 goto fail; 437 438 memset(dma->vaddr, 0, size); 439 440 dma->paddr = dma->map->dm_segs[0].ds_addr; 441 if (kvap != NULL) 442 *kvap = dma->vaddr; 443 444 return 0; 445 446 fail: wpi_dma_contig_free(dma); 447 return error; 448 } 449 450 static void 451 wpi_dma_contig_free(struct wpi_dma_info *dma) 452 { 453 if (dma->map != NULL) { 454 if (dma->vaddr != NULL) { 455 bus_dmamap_unload(dma->tag, dma->map); 456 bus_dmamem_unmap(dma->tag, dma->vaddr, dma->size); 457 bus_dmamem_free(dma->tag, &dma->seg, 1); 458 dma->vaddr = NULL; 459 } 460 bus_dmamap_destroy(dma->tag, dma->map); 461 dma->map = NULL; 462 } 463 } 464 465 /* 466 * Allocate a shared page between host and NIC. 467 */ 468 static int 469 wpi_alloc_shared(struct wpi_softc *sc) 470 { 471 int error; 472 /* must be aligned on a 4K-page boundary */ 473 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->shared_dma, 474 (void **)&sc->shared, sizeof (struct wpi_shared), 475 WPI_BUF_ALIGN,BUS_DMA_NOWAIT); 476 if (error != 0) 477 aprint_error_dev(sc->sc_dev, 478 "could not allocate shared area DMA memory\n"); 479 480 return error; 481 } 482 483 static void 484 wpi_free_shared(struct wpi_softc *sc) 485 { 486 wpi_dma_contig_free(&sc->shared_dma); 487 } 488 489 /* 490 * Allocate DMA-safe memory for firmware transfer. 491 */ 492 static int 493 wpi_alloc_fwmem(struct wpi_softc *sc) 494 { 495 int error; 496 /* allocate enough contiguous space to store text and data */ 497 error = wpi_dma_contig_alloc(sc->sc_dmat, &sc->fw_dma, NULL, 498 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 0, 499 BUS_DMA_NOWAIT); 500 501 if (error != 0) 502 aprint_error_dev(sc->sc_dev, 503 "could not allocate firmware transfer area" 504 "DMA memory\n"); 505 return error; 506 } 507 508 static void 509 wpi_free_fwmem(struct wpi_softc *sc) 510 { 511 wpi_dma_contig_free(&sc->fw_dma); 512 } 513 514 515 static struct wpi_rbuf * 516 wpi_alloc_rbuf(struct wpi_softc *sc) 517 { 518 struct wpi_rbuf *rbuf; 519 520 rbuf = SLIST_FIRST(&sc->rxq.freelist); 521 if (rbuf == NULL) 522 return NULL; 523 SLIST_REMOVE_HEAD(&sc->rxq.freelist, next); 524 sc->rxq.nb_free_entries --; 525 526 return rbuf; 527 } 528 529 /* 530 * This is called automatically by the network stack when the mbuf to which our 531 * Rx buffer is attached is freed. 532 */ 533 static void 534 wpi_free_rbuf(struct mbuf* m, void *buf, size_t size, void *arg) 535 { 536 struct wpi_rbuf *rbuf = arg; 537 struct wpi_softc *sc = rbuf->sc; 538 539 /* put the buffer back in the free list */ 540 541 SLIST_INSERT_HEAD(&sc->rxq.freelist, rbuf, next); 542 sc->rxq.nb_free_entries ++; 543 544 if (__predict_true(m != NULL)) 545 pool_cache_put(mb_cache, m); 546 } 547 548 static int 549 wpi_alloc_rpool(struct wpi_softc *sc) 550 { 551 struct wpi_rx_ring *ring = &sc->rxq; 552 struct wpi_rbuf *rbuf; 553 int i, error; 554 555 /* allocate a big chunk of DMA'able memory.. */ 556 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->buf_dma, NULL, 557 WPI_RBUF_COUNT * WPI_RBUF_SIZE, WPI_BUF_ALIGN, BUS_DMA_NOWAIT); 558 if (error != 0) { 559 aprint_normal_dev(sc->sc_dev, 560 "could not allocate Rx buffers DMA memory\n"); 561 return error; 562 } 563 564 /* ..and split it into 3KB chunks */ 565 SLIST_INIT(&ring->freelist); 566 for (i = 0; i < WPI_RBUF_COUNT; i++) { 567 rbuf = &ring->rbuf[i]; 568 rbuf->sc = sc; /* backpointer for callbacks */ 569 rbuf->vaddr = (char *)ring->buf_dma.vaddr + i * WPI_RBUF_SIZE; 570 rbuf->paddr = ring->buf_dma.paddr + i * WPI_RBUF_SIZE; 571 572 SLIST_INSERT_HEAD(&ring->freelist, rbuf, next); 573 } 574 575 ring->nb_free_entries = WPI_RBUF_COUNT; 576 return 0; 577 } 578 579 static void 580 wpi_free_rpool(struct wpi_softc *sc) 581 { 582 wpi_dma_contig_free(&sc->rxq.buf_dma); 583 } 584 585 static int 586 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 587 { 588 struct wpi_rx_data *data; 589 struct wpi_rbuf *rbuf; 590 int i, error; 591 592 ring->cur = 0; 593 594 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 595 (void **)&ring->desc, 596 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 597 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 598 if (error != 0) { 599 aprint_error_dev(sc->sc_dev, "could not allocate rx ring DMA memory\n"); 600 goto fail; 601 } 602 603 /* 604 * Setup Rx buffers. 605 */ 606 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 607 data = &ring->data[i]; 608 609 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 610 if (data->m == NULL) { 611 aprint_error_dev(sc->sc_dev, "could not allocate rx mbuf\n"); 612 error = ENOMEM; 613 goto fail; 614 } 615 if ((rbuf = wpi_alloc_rbuf(sc)) == NULL) { 616 m_freem(data->m); 617 data->m = NULL; 618 aprint_error_dev(sc->sc_dev, "could not allocate rx cluster\n"); 619 error = ENOMEM; 620 goto fail; 621 } 622 /* attach Rx buffer to mbuf */ 623 MEXTADD(data->m, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 624 rbuf); 625 data->m->m_flags |= M_EXT_RW; 626 627 ring->desc[i] = htole32(rbuf->paddr); 628 } 629 630 return 0; 631 632 fail: wpi_free_rx_ring(sc, ring); 633 return error; 634 } 635 636 static void 637 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 638 { 639 int ntries; 640 641 wpi_mem_lock(sc); 642 643 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 644 for (ntries = 0; ntries < 100; ntries++) { 645 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 646 break; 647 DELAY(10); 648 } 649 #ifdef WPI_DEBUG 650 if (ntries == 100 && wpi_debug > 0) 651 aprint_error_dev(sc->sc_dev, "timeout resetting Rx ring\n"); 652 #endif 653 wpi_mem_unlock(sc); 654 655 ring->cur = 0; 656 } 657 658 static void 659 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 660 { 661 int i; 662 663 wpi_dma_contig_free(&ring->desc_dma); 664 665 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 666 if (ring->data[i].m != NULL) 667 m_freem(ring->data[i].m); 668 } 669 } 670 671 static int 672 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 673 int qid) 674 { 675 struct wpi_tx_data *data; 676 int i, error; 677 678 ring->qid = qid; 679 ring->count = count; 680 ring->queued = 0; 681 ring->cur = 0; 682 683 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->desc_dma, 684 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 685 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 686 if (error != 0) { 687 aprint_error_dev(sc->sc_dev, "could not allocate tx ring DMA memory\n"); 688 goto fail; 689 } 690 691 /* update shared page with ring's base address */ 692 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 693 694 error = wpi_dma_contig_alloc(sc->sc_dmat, &ring->cmd_dma, 695 (void **)&ring->cmd, 696 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 697 if (error != 0) { 698 aprint_error_dev(sc->sc_dev, "could not allocate tx cmd DMA memory\n"); 699 goto fail; 700 } 701 702 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 703 M_NOWAIT); 704 if (ring->data == NULL) { 705 aprint_error_dev(sc->sc_dev, "could not allocate tx data slots\n"); 706 goto fail; 707 } 708 709 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 710 711 for (i = 0; i < count; i++) { 712 data = &ring->data[i]; 713 714 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 715 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 716 &data->map); 717 if (error != 0) { 718 aprint_error_dev(sc->sc_dev, "could not create tx buf DMA map\n"); 719 goto fail; 720 } 721 } 722 723 return 0; 724 725 fail: wpi_free_tx_ring(sc, ring); 726 return error; 727 } 728 729 static void 730 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 731 { 732 struct wpi_tx_data *data; 733 int i, ntries; 734 735 wpi_mem_lock(sc); 736 737 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 738 for (ntries = 0; ntries < 100; ntries++) { 739 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 740 break; 741 DELAY(10); 742 } 743 #ifdef WPI_DEBUG 744 if (ntries == 100 && wpi_debug > 0) { 745 aprint_error_dev(sc->sc_dev, "timeout resetting Tx ring %d\n", 746 ring->qid); 747 } 748 #endif 749 wpi_mem_unlock(sc); 750 751 for (i = 0; i < ring->count; i++) { 752 data = &ring->data[i]; 753 754 if (data->m != NULL) { 755 bus_dmamap_unload(sc->sc_dmat, data->map); 756 m_freem(data->m); 757 data->m = NULL; 758 } 759 } 760 761 ring->queued = 0; 762 ring->cur = 0; 763 } 764 765 static void 766 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 767 { 768 struct wpi_tx_data *data; 769 int i; 770 771 wpi_dma_contig_free(&ring->desc_dma); 772 wpi_dma_contig_free(&ring->cmd_dma); 773 774 if (ring->data != NULL) { 775 for (i = 0; i < ring->count; i++) { 776 data = &ring->data[i]; 777 778 if (data->m != NULL) { 779 bus_dmamap_unload(sc->sc_dmat, data->map); 780 m_freem(data->m); 781 } 782 } 783 free(ring->data, M_DEVBUF); 784 } 785 } 786 787 /*ARGUSED*/ 788 static struct ieee80211_node * 789 wpi_node_alloc(struct ieee80211_node_table *nt __unused) 790 { 791 struct wpi_node *wn; 792 793 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 794 795 if (wn != NULL) 796 memset(wn, 0, sizeof (struct wpi_node)); 797 return (struct ieee80211_node *)wn; 798 } 799 800 static void 801 wpi_newassoc(struct ieee80211_node *ni, int isnew) 802 { 803 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 804 int i; 805 806 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 807 808 /* set rate to some reasonable initial value */ 809 for (i = ni->ni_rates.rs_nrates - 1; 810 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 811 i--); 812 ni->ni_txrate = i; 813 } 814 815 static int 816 wpi_media_change(struct ifnet *ifp) 817 { 818 int error; 819 820 error = ieee80211_media_change(ifp); 821 if (error != ENETRESET) 822 return error; 823 824 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 825 wpi_init(ifp); 826 827 return 0; 828 } 829 830 static int 831 wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 832 { 833 struct ifnet *ifp = ic->ic_ifp; 834 struct wpi_softc *sc = ifp->if_softc; 835 struct ieee80211_node *ni; 836 int error; 837 838 callout_stop(&sc->calib_to); 839 840 switch (nstate) { 841 case IEEE80211_S_SCAN: 842 843 if (sc->is_scanning) 844 break; 845 846 sc->is_scanning = true; 847 ieee80211_node_table_reset(&ic->ic_scan); 848 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 849 850 /* make the link LED blink while we're scanning */ 851 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 852 853 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 854 aprint_error_dev(sc->sc_dev, "could not initiate scan\n"); 855 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 856 return error; 857 } 858 859 ic->ic_state = nstate; 860 return 0; 861 862 case IEEE80211_S_ASSOC: 863 if (ic->ic_state != IEEE80211_S_RUN) 864 break; 865 /* FALLTHROUGH */ 866 case IEEE80211_S_AUTH: 867 sc->config.associd = 0; 868 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 869 if ((error = wpi_auth(sc)) != 0) { 870 aprint_error_dev(sc->sc_dev, 871 "could not send authentication request\n"); 872 return error; 873 } 874 break; 875 876 case IEEE80211_S_RUN: 877 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 878 /* link LED blinks while monitoring */ 879 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 880 break; 881 } 882 883 ni = ic->ic_bss; 884 885 if (ic->ic_opmode != IEEE80211_M_STA) { 886 (void) wpi_auth(sc); /* XXX */ 887 wpi_setup_beacon(sc, ni); 888 } 889 890 wpi_enable_tsf(sc, ni); 891 892 /* update adapter's configuration */ 893 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 894 /* short preamble/slot time are negotiated when associating */ 895 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 896 WPI_CONFIG_SHSLOT); 897 if (ic->ic_flags & IEEE80211_F_SHSLOT) 898 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 899 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 900 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 901 sc->config.filter |= htole32(WPI_FILTER_BSS); 902 if (ic->ic_opmode != IEEE80211_M_STA) 903 sc->config.filter |= htole32(WPI_FILTER_BEACON); 904 905 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 906 907 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 908 sc->config.flags)); 909 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 910 sizeof (struct wpi_config), 1); 911 if (error != 0) { 912 aprint_error_dev(sc->sc_dev, "could not update configuration\n"); 913 return error; 914 } 915 916 /* configuration has changed, set Tx power accordingly */ 917 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 918 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 919 return error; 920 } 921 922 if (ic->ic_opmode == IEEE80211_M_STA) { 923 /* fake a join to init the tx rate */ 924 wpi_newassoc(ni, 1); 925 } 926 927 /* start periodic calibration timer */ 928 sc->calib_cnt = 0; 929 callout_schedule(&sc->calib_to, hz/2); 930 931 /* link LED always on while associated */ 932 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 933 break; 934 935 case IEEE80211_S_INIT: 936 sc->is_scanning = false; 937 break; 938 } 939 940 return sc->sc_newstate(ic, nstate, arg); 941 } 942 943 /* 944 * XXX: Hack to set the current channel to the value advertised in beacons or 945 * probe responses. Only used during AP detection. 946 * XXX: Duplicated from if_iwi.c 947 */ 948 static void 949 wpi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 950 { 951 struct ieee80211_frame *wh; 952 uint8_t subtype; 953 uint8_t *frm, *efrm; 954 955 wh = mtod(m, struct ieee80211_frame *); 956 957 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 958 return; 959 960 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 961 962 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 963 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 964 return; 965 966 frm = (uint8_t *)(wh + 1); 967 efrm = mtod(m, uint8_t *) + m->m_len; 968 969 frm += 12; /* skip tstamp, bintval and capinfo fields */ 970 while (frm < efrm) { 971 if (*frm == IEEE80211_ELEMID_DSPARMS) 972 #if IEEE80211_CHAN_MAX < 255 973 if (frm[2] <= IEEE80211_CHAN_MAX) 974 #endif 975 ic->ic_curchan = &ic->ic_channels[frm[2]]; 976 977 frm += frm[1] + 2; 978 } 979 } 980 981 /* 982 * Grab exclusive access to NIC memory. 983 */ 984 static void 985 wpi_mem_lock(struct wpi_softc *sc) 986 { 987 uint32_t tmp; 988 int ntries; 989 990 tmp = WPI_READ(sc, WPI_GPIO_CTL); 991 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 992 993 /* spin until we actually get the lock */ 994 for (ntries = 0; ntries < 1000; ntries++) { 995 if ((WPI_READ(sc, WPI_GPIO_CTL) & 996 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 997 break; 998 DELAY(10); 999 } 1000 if (ntries == 1000) 1001 aprint_error_dev(sc->sc_dev, "could not lock memory\n"); 1002 } 1003 1004 /* 1005 * Release lock on NIC memory. 1006 */ 1007 static void 1008 wpi_mem_unlock(struct wpi_softc *sc) 1009 { 1010 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1011 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1012 } 1013 1014 static uint32_t 1015 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1016 { 1017 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1018 return WPI_READ(sc, WPI_READ_MEM_DATA); 1019 } 1020 1021 static void 1022 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1023 { 1024 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1025 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1026 } 1027 1028 static void 1029 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1030 const uint32_t *data, int wlen) 1031 { 1032 for (; wlen > 0; wlen--, data++, addr += 4) 1033 wpi_mem_write(sc, addr, *data); 1034 } 1035 1036 1037 /* 1038 * Read `len' bytes from the EEPROM. We access the EEPROM through the MAC 1039 * instead of using the traditional bit-bang method. 1040 */ 1041 static int 1042 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1043 { 1044 uint8_t *out = data; 1045 uint32_t val; 1046 int ntries; 1047 1048 wpi_mem_lock(sc); 1049 for (; len > 0; len -= 2, addr++) { 1050 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1051 1052 for (ntries = 0; ntries < 10; ntries++) { 1053 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & 1054 WPI_EEPROM_READY) 1055 break; 1056 DELAY(5); 1057 } 1058 if (ntries == 10) { 1059 aprint_error_dev(sc->sc_dev, "could not read EEPROM\n"); 1060 return ETIMEDOUT; 1061 } 1062 *out++ = val >> 16; 1063 if (len > 1) 1064 *out++ = val >> 24; 1065 } 1066 wpi_mem_unlock(sc); 1067 1068 return 0; 1069 } 1070 1071 /* 1072 * The firmware boot code is small and is intended to be copied directly into 1073 * the NIC internal memory. 1074 */ 1075 int 1076 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *ucode, int size) 1077 { 1078 int ntries; 1079 1080 size /= sizeof (uint32_t); 1081 1082 wpi_mem_lock(sc); 1083 1084 /* copy microcode image into NIC memory */ 1085 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1086 (const uint32_t *)ucode, size); 1087 1088 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1089 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1090 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1091 1092 /* run microcode */ 1093 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1094 1095 /* wait for transfer to complete */ 1096 for (ntries = 0; ntries < 1000; ntries++) { 1097 if (!(wpi_mem_read(sc, WPI_MEM_UCODE_CTL) & WPI_UC_RUN)) 1098 break; 1099 DELAY(10); 1100 } 1101 if (ntries == 1000) { 1102 wpi_mem_unlock(sc); 1103 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1104 return ETIMEDOUT; 1105 } 1106 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1107 1108 wpi_mem_unlock(sc); 1109 1110 return 0; 1111 } 1112 1113 static int 1114 wpi_load_firmware(struct wpi_softc *sc) 1115 { 1116 struct wpi_dma_info *dma = &sc->fw_dma; 1117 struct wpi_firmware_hdr hdr; 1118 const uint8_t *init_text, *init_data, *main_text, *main_data; 1119 const uint8_t *boot_text; 1120 uint32_t init_textsz, init_datasz, main_textsz, main_datasz; 1121 uint32_t boot_textsz; 1122 firmware_handle_t fw; 1123 u_char *dfw; 1124 size_t size; 1125 int error; 1126 1127 /* load firmware image from disk */ 1128 if ((error = firmware_open("if_wpi","iwlwifi-3945.ucode", &fw) != 0)) { 1129 aprint_error_dev(sc->sc_dev, "could not read firmware file\n"); 1130 goto fail1; 1131 } 1132 1133 size = firmware_get_size(fw); 1134 1135 /* extract firmware header information */ 1136 if (size < sizeof (struct wpi_firmware_hdr)) { 1137 aprint_error_dev(sc->sc_dev, "truncated firmware header: %zu bytes\n", 1138 size); 1139 error = EINVAL; 1140 goto fail2; 1141 } 1142 1143 if ((error = firmware_read(fw, 0, &hdr, 1144 sizeof (struct wpi_firmware_hdr))) != 0) { 1145 aprint_error_dev(sc->sc_dev, "can't get firmware header\n"); 1146 goto fail2; 1147 } 1148 1149 main_textsz = le32toh(hdr.main_textsz); 1150 main_datasz = le32toh(hdr.main_datasz); 1151 init_textsz = le32toh(hdr.init_textsz); 1152 init_datasz = le32toh(hdr.init_datasz); 1153 boot_textsz = le32toh(hdr.boot_textsz); 1154 1155 /* sanity-check firmware segments sizes */ 1156 if (main_textsz > WPI_FW_MAIN_TEXT_MAXSZ || 1157 main_datasz > WPI_FW_MAIN_DATA_MAXSZ || 1158 init_textsz > WPI_FW_INIT_TEXT_MAXSZ || 1159 init_datasz > WPI_FW_INIT_DATA_MAXSZ || 1160 boot_textsz > WPI_FW_BOOT_TEXT_MAXSZ || 1161 (boot_textsz & 3) != 0) { 1162 aprint_error_dev(sc->sc_dev, "invalid firmware header\n"); 1163 error = EINVAL; 1164 goto fail2; 1165 } 1166 1167 /* check that all firmware segments are present */ 1168 if (size < sizeof (struct wpi_firmware_hdr) + main_textsz + 1169 main_datasz + init_textsz + init_datasz + boot_textsz) { 1170 aprint_error_dev(sc->sc_dev, "firmware file too short: %zu bytes\n", 1171 size); 1172 error = EINVAL; 1173 goto fail2; 1174 } 1175 1176 dfw = firmware_malloc(size); 1177 if (dfw == NULL) { 1178 aprint_error_dev(sc->sc_dev, "not enough memory to stock firmware\n"); 1179 error = ENOMEM; 1180 goto fail2; 1181 } 1182 1183 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 1184 aprint_error_dev(sc->sc_dev, "can't get firmware\n"); 1185 goto fail2; 1186 } 1187 1188 /* get pointers to firmware segments */ 1189 main_text = dfw + sizeof (struct wpi_firmware_hdr); 1190 main_data = main_text + main_textsz; 1191 init_text = main_data + main_datasz; 1192 init_data = init_text + init_textsz; 1193 boot_text = init_data + init_datasz; 1194 1195 /* copy initialization images into pre-allocated DMA-safe memory */ 1196 memcpy(dma->vaddr, init_data, init_datasz); 1197 memcpy((char*)dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, init_text, init_textsz); 1198 1199 /* tell adapter where to find initialization images */ 1200 wpi_mem_lock(sc); 1201 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1202 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, init_datasz); 1203 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1204 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 1205 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, init_textsz); 1206 wpi_mem_unlock(sc); 1207 1208 /* load firmware boot code */ 1209 if ((error = wpi_load_microcode(sc, boot_text, boot_textsz)) != 0) { 1210 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 1211 goto fail3; 1212 } 1213 1214 /* now press "execute" ;-) */ 1215 WPI_WRITE(sc, WPI_RESET, 0); 1216 1217 /* ..and wait at most one second for adapter to initialize */ 1218 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1219 /* this isn't what was supposed to happen.. */ 1220 aprint_error_dev(sc->sc_dev, 1221 "timeout waiting for adapter to initialize\n"); 1222 } 1223 1224 /* copy runtime images into pre-allocated DMA-safe memory */ 1225 memcpy(dma->vaddr, main_data, main_datasz); 1226 memcpy((char*)dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, main_text, main_textsz); 1227 1228 /* tell adapter where to find runtime images */ 1229 wpi_mem_lock(sc); 1230 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 1231 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, main_datasz); 1232 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 1233 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 1234 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | main_textsz); 1235 wpi_mem_unlock(sc); 1236 1237 /* wait at most one second for second alive notification */ 1238 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 1239 /* this isn't what was supposed to happen.. */ 1240 aprint_error_dev(sc->sc_dev, 1241 "timeout waiting for adapter to initialize\n"); 1242 } 1243 1244 1245 fail3: firmware_free(dfw,size); 1246 fail2: firmware_close(fw); 1247 fail1: return error; 1248 } 1249 1250 static void 1251 wpi_calib_timeout(void *arg) 1252 { 1253 struct wpi_softc *sc = arg; 1254 struct ieee80211com *ic = &sc->sc_ic; 1255 int temp, s; 1256 1257 /* automatic rate control triggered every 500ms */ 1258 if (ic->ic_fixed_rate == -1) { 1259 s = splnet(); 1260 if (ic->ic_opmode == IEEE80211_M_STA) 1261 wpi_iter_func(sc, ic->ic_bss); 1262 else 1263 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 1264 splx(s); 1265 } 1266 1267 /* update sensor data */ 1268 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 1269 1270 /* automatic power calibration every 60s */ 1271 if (++sc->calib_cnt >= 120) { 1272 wpi_power_calibration(sc, temp); 1273 sc->calib_cnt = 0; 1274 } 1275 1276 callout_schedule(&sc->calib_to, hz/2); 1277 } 1278 1279 static void 1280 wpi_iter_func(void *arg, struct ieee80211_node *ni) 1281 { 1282 struct wpi_softc *sc = arg; 1283 struct wpi_node *wn = (struct wpi_node *)ni; 1284 1285 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 1286 } 1287 1288 /* 1289 * This function is called periodically (every 60 seconds) to adjust output 1290 * power to temperature changes. 1291 */ 1292 void 1293 wpi_power_calibration(struct wpi_softc *sc, int temp) 1294 { 1295 /* sanity-check read value */ 1296 if (temp < -260 || temp > 25) { 1297 /* this can't be correct, ignore */ 1298 DPRINTF(("out-of-range temperature reported: %d\n", temp)); 1299 return; 1300 } 1301 1302 DPRINTF(("temperature %d->%d\n", sc->temp, temp)); 1303 1304 /* adjust Tx power if need be */ 1305 if (abs(temp - sc->temp) <= 6) 1306 return; 1307 1308 sc->temp = temp; 1309 1310 if (wpi_set_txpower(sc, sc->sc_ic.ic_bss->ni_chan, 1) != 0) { 1311 /* just warn, too bad for the automatic calibration... */ 1312 aprint_error_dev(sc->sc_dev, "could not adjust Tx power\n"); 1313 } 1314 } 1315 1316 static void 1317 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1318 struct wpi_rx_data *data) 1319 { 1320 struct ieee80211com *ic = &sc->sc_ic; 1321 struct ifnet *ifp = ic->ic_ifp; 1322 struct wpi_rx_ring *ring = &sc->rxq; 1323 struct wpi_rx_stat *stat; 1324 struct wpi_rx_head *head; 1325 struct wpi_rx_tail *tail; 1326 struct wpi_rbuf *rbuf; 1327 struct ieee80211_frame *wh; 1328 struct ieee80211_node *ni; 1329 struct mbuf *m, *mnew; 1330 int data_off ; 1331 1332 stat = (struct wpi_rx_stat *)(desc + 1); 1333 1334 if (stat->len > WPI_STAT_MAXLEN) { 1335 aprint_error_dev(sc->sc_dev, "invalid rx statistic header\n"); 1336 ifp->if_ierrors++; 1337 return; 1338 } 1339 1340 head = (struct wpi_rx_head *)((char *)(stat + 1) + stat->len); 1341 tail = (struct wpi_rx_tail *)((char *)(head + 1) + le16toh(head->len)); 1342 1343 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1344 "chan=%d tstamp=%" PRId64 "\n", ring->cur, le32toh(desc->len), 1345 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1346 le64toh(tail->tstamp))); 1347 1348 /* 1349 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1350 * to radiotap in monitor mode). 1351 */ 1352 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1353 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1354 ifp->if_ierrors++; 1355 return; 1356 } 1357 1358 /* Compute where are the useful datas */ 1359 data_off = (char*)(head + 1) - mtod(data->m, char*); 1360 1361 /* 1362 * If the number of free entry is too low 1363 * just dup the data->m socket and reuse the same rbuf entry 1364 */ 1365 if (sc->rxq.nb_free_entries <= WPI_RBUF_LOW_LIMIT) { 1366 1367 /* Prepare the mbuf for the m_dup */ 1368 data->m->m_pkthdr.len = data->m->m_len = le16toh(head->len); 1369 data->m->m_data = (char*) data->m->m_data + data_off; 1370 1371 m = m_dup(data->m,0,M_COPYALL,M_DONTWAIT); 1372 1373 /* Restore the m_data pointer for future use */ 1374 data->m->m_data = (char*) data->m->m_data - data_off; 1375 1376 if (m == NULL) { 1377 ifp->if_ierrors++; 1378 return; 1379 } 1380 } else { 1381 1382 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1383 if (mnew == NULL) { 1384 ifp->if_ierrors++; 1385 return; 1386 } 1387 1388 rbuf = wpi_alloc_rbuf(sc); 1389 KASSERT(rbuf != NULL); 1390 1391 /* attach Rx buffer to mbuf */ 1392 MEXTADD(mnew, rbuf->vaddr, WPI_RBUF_SIZE, 0, wpi_free_rbuf, 1393 rbuf); 1394 mnew->m_flags |= M_EXT_RW; 1395 1396 m = data->m; 1397 data->m = mnew; 1398 1399 /* update Rx descriptor */ 1400 ring->desc[ring->cur] = htole32(rbuf->paddr); 1401 1402 m->m_data = (char*)m->m_data + data_off; 1403 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1404 } 1405 1406 /* finalize mbuf */ 1407 m->m_pkthdr.rcvif = ifp; 1408 1409 if (ic->ic_state == IEEE80211_S_SCAN) 1410 wpi_fix_channel(ic, m); 1411 1412 #if NBPFILTER > 0 1413 if (sc->sc_drvbpf != NULL) { 1414 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1415 1416 tap->wr_flags = 0; 1417 tap->wr_chan_freq = 1418 htole16(ic->ic_channels[head->chan].ic_freq); 1419 tap->wr_chan_flags = 1420 htole16(ic->ic_channels[head->chan].ic_flags); 1421 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1422 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1423 tap->wr_tsft = tail->tstamp; 1424 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1425 switch (head->rate) { 1426 /* CCK rates */ 1427 case 10: tap->wr_rate = 2; break; 1428 case 20: tap->wr_rate = 4; break; 1429 case 55: tap->wr_rate = 11; break; 1430 case 110: tap->wr_rate = 22; break; 1431 /* OFDM rates */ 1432 case 0xd: tap->wr_rate = 12; break; 1433 case 0xf: tap->wr_rate = 18; break; 1434 case 0x5: tap->wr_rate = 24; break; 1435 case 0x7: tap->wr_rate = 36; break; 1436 case 0x9: tap->wr_rate = 48; break; 1437 case 0xb: tap->wr_rate = 72; break; 1438 case 0x1: tap->wr_rate = 96; break; 1439 case 0x3: tap->wr_rate = 108; break; 1440 /* unknown rate: should not happen */ 1441 default: tap->wr_rate = 0; 1442 } 1443 if (le16toh(head->flags) & 0x4) 1444 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1445 1446 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1447 } 1448 #endif 1449 1450 /* grab a reference to the source node */ 1451 wh = mtod(m, struct ieee80211_frame *); 1452 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1453 1454 /* send the frame to the 802.11 layer */ 1455 ieee80211_input(ic, m, ni, stat->rssi, 0); 1456 1457 /* release node reference */ 1458 ieee80211_free_node(ni); 1459 } 1460 1461 static void 1462 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1463 { 1464 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1465 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1466 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1467 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1468 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1469 1470 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1471 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1472 stat->nkill, stat->rate, le32toh(stat->duration), 1473 le32toh(stat->status))); 1474 1475 /* 1476 * Update rate control statistics for the node. 1477 * XXX we should not count mgmt frames since they're always sent at 1478 * the lowest available bit-rate. 1479 */ 1480 wn->amn.amn_txcnt++; 1481 if (stat->ntries > 0) { 1482 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1483 wn->amn.amn_retrycnt++; 1484 } 1485 1486 if ((le32toh(stat->status) & 0xff) != 1) 1487 ifp->if_oerrors++; 1488 else 1489 ifp->if_opackets++; 1490 1491 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1492 m_freem(txdata->m); 1493 txdata->m = NULL; 1494 ieee80211_free_node(txdata->ni); 1495 txdata->ni = NULL; 1496 1497 ring->queued--; 1498 1499 sc->sc_tx_timer = 0; 1500 ifp->if_flags &= ~IFF_OACTIVE; 1501 wpi_start(ifp); 1502 } 1503 1504 static void 1505 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1506 { 1507 struct wpi_tx_ring *ring = &sc->cmdq; 1508 struct wpi_tx_data *data; 1509 1510 if ((desc->qid & 7) != 4) 1511 return; /* not a command ack */ 1512 1513 data = &ring->data[desc->idx]; 1514 1515 /* if the command was mapped in a mbuf, free it */ 1516 if (data->m != NULL) { 1517 bus_dmamap_unload(sc->sc_dmat, data->map); 1518 m_freem(data->m); 1519 data->m = NULL; 1520 } 1521 1522 wakeup(&ring->cmd[desc->idx]); 1523 } 1524 1525 static void 1526 wpi_notif_intr(struct wpi_softc *sc) 1527 { 1528 struct ieee80211com *ic = &sc->sc_ic; 1529 struct ifnet *ifp = ic->ic_ifp; 1530 struct wpi_rx_desc *desc; 1531 struct wpi_rx_data *data; 1532 uint32_t hw; 1533 1534 hw = le32toh(sc->shared->next); 1535 while (sc->rxq.cur != hw) { 1536 data = &sc->rxq.data[sc->rxq.cur]; 1537 1538 desc = mtod(data->m, struct wpi_rx_desc *); 1539 1540 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1541 "len=%d\n", desc->qid, desc->idx, desc->flags, 1542 desc->type, le32toh(desc->len))); 1543 1544 if (!(desc->qid & 0x80)) /* reply to a command */ 1545 wpi_cmd_intr(sc, desc); 1546 1547 switch (desc->type) { 1548 case WPI_RX_DONE: 1549 /* a 802.11 frame was received */ 1550 wpi_rx_intr(sc, desc, data); 1551 break; 1552 1553 case WPI_TX_DONE: 1554 /* a 802.11 frame has been transmitted */ 1555 wpi_tx_intr(sc, desc); 1556 break; 1557 1558 case WPI_UC_READY: 1559 { 1560 struct wpi_ucode_info *uc = 1561 (struct wpi_ucode_info *)(desc + 1); 1562 1563 /* the microcontroller is ready */ 1564 DPRINTF(("microcode alive notification version %x " 1565 "alive %x\n", le32toh(uc->version), 1566 le32toh(uc->valid))); 1567 1568 if (le32toh(uc->valid) != 1) { 1569 aprint_error_dev(sc->sc_dev, 1570 "microcontroller initialization failed\n"); 1571 } 1572 break; 1573 } 1574 case WPI_STATE_CHANGED: 1575 { 1576 uint32_t *status = (uint32_t *)(desc + 1); 1577 1578 /* enabled/disabled notification */ 1579 DPRINTF(("state changed to %x\n", le32toh(*status))); 1580 1581 if (le32toh(*status) & 1) { 1582 /* the radio button has to be pushed */ 1583 aprint_error_dev(sc->sc_dev, "Radio transmitter is off\n"); 1584 /* turn the interface down */ 1585 ifp->if_flags &= ~IFF_UP; 1586 wpi_stop(ifp, 1); 1587 return; /* no further processing */ 1588 } 1589 break; 1590 } 1591 case WPI_START_SCAN: 1592 { 1593 struct wpi_start_scan *scan = 1594 (struct wpi_start_scan *)(desc + 1); 1595 1596 DPRINTFN(2, ("scanning channel %d status %x\n", 1597 scan->chan, le32toh(scan->status))); 1598 1599 /* fix current channel */ 1600 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1601 break; 1602 } 1603 case WPI_STOP_SCAN: 1604 { 1605 struct wpi_stop_scan *scan = 1606 (struct wpi_stop_scan *)(desc + 1); 1607 1608 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1609 scan->nchan, scan->status, scan->chan)); 1610 1611 if (scan->status == 1 && scan->chan <= 14) { 1612 /* 1613 * We just finished scanning 802.11g channels, 1614 * start scanning 802.11a ones. 1615 */ 1616 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1617 break; 1618 } 1619 sc->is_scanning = false; 1620 ieee80211_end_scan(ic); 1621 break; 1622 } 1623 } 1624 1625 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1626 } 1627 1628 /* tell the firmware what we have processed */ 1629 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1630 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1631 } 1632 1633 static int 1634 wpi_intr(void *arg) 1635 { 1636 struct wpi_softc *sc = arg; 1637 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1638 uint32_t r; 1639 1640 r = WPI_READ(sc, WPI_INTR); 1641 if (r == 0 || r == 0xffffffff) 1642 return 0; /* not for us */ 1643 1644 DPRINTFN(5, ("interrupt reg %x\n", r)); 1645 1646 /* disable interrupts */ 1647 WPI_WRITE(sc, WPI_MASK, 0); 1648 /* ack interrupts */ 1649 WPI_WRITE(sc, WPI_INTR, r); 1650 1651 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1652 aprint_error_dev(sc->sc_dev, "fatal firmware error\n"); 1653 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1654 wpi_stop(sc->sc_ic.ic_ifp, 1); 1655 return 1; 1656 } 1657 1658 if (r & WPI_RX_INTR) 1659 wpi_notif_intr(sc); 1660 1661 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1662 wakeup(sc); 1663 1664 /* re-enable interrupts */ 1665 if (ifp->if_flags & IFF_UP) 1666 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1667 1668 return 1; 1669 } 1670 1671 static uint8_t 1672 wpi_plcp_signal(int rate) 1673 { 1674 switch (rate) { 1675 /* CCK rates (returned values are device-dependent) */ 1676 case 2: return 10; 1677 case 4: return 20; 1678 case 11: return 55; 1679 case 22: return 110; 1680 1681 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1682 /* R1-R4, (u)ral is R4-R1 */ 1683 case 12: return 0xd; 1684 case 18: return 0xf; 1685 case 24: return 0x5; 1686 case 36: return 0x7; 1687 case 48: return 0x9; 1688 case 72: return 0xb; 1689 case 96: return 0x1; 1690 case 108: return 0x3; 1691 1692 /* unsupported rates (should not get there) */ 1693 default: return 0; 1694 } 1695 } 1696 1697 /* quickly determine if a given rate is CCK or OFDM */ 1698 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1699 1700 static int 1701 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1702 int ac) 1703 { 1704 struct ieee80211com *ic = &sc->sc_ic; 1705 struct wpi_tx_ring *ring = &sc->txq[ac]; 1706 struct wpi_tx_desc *desc; 1707 struct wpi_tx_data *data; 1708 struct wpi_tx_cmd *cmd; 1709 struct wpi_cmd_data *tx; 1710 struct ieee80211_frame *wh; 1711 struct ieee80211_key *k; 1712 const struct chanAccParams *cap; 1713 struct mbuf *mnew; 1714 int i, error, rate, hdrlen, noack = 0; 1715 1716 desc = &ring->desc[ring->cur]; 1717 data = &ring->data[ring->cur]; 1718 1719 wh = mtod(m0, struct ieee80211_frame *); 1720 1721 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1722 cap = &ic->ic_wme.wme_chanParams; 1723 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1724 } 1725 1726 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1727 k = ieee80211_crypto_encap(ic, ni, m0); 1728 if (k == NULL) { 1729 m_freem(m0); 1730 return ENOBUFS; 1731 } 1732 1733 /* packet header may have moved, reset our local pointer */ 1734 wh = mtod(m0, struct ieee80211_frame *); 1735 } 1736 1737 hdrlen = ieee80211_anyhdrsize(wh); 1738 1739 /* pickup a rate */ 1740 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1741 IEEE80211_FC0_TYPE_MGT) { 1742 /* mgmt frames are sent at the lowest available bit-rate */ 1743 rate = ni->ni_rates.rs_rates[0]; 1744 } else { 1745 if (ic->ic_fixed_rate != -1) { 1746 rate = ic->ic_sup_rates[ic->ic_curmode]. 1747 rs_rates[ic->ic_fixed_rate]; 1748 } else 1749 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1750 } 1751 rate &= IEEE80211_RATE_VAL; 1752 1753 1754 #if NBPFILTER > 0 1755 if (sc->sc_drvbpf != NULL) { 1756 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1757 1758 tap->wt_flags = 0; 1759 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1760 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1761 tap->wt_rate = rate; 1762 tap->wt_hwqueue = ac; 1763 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1764 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1765 1766 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1767 } 1768 #endif 1769 1770 cmd = &ring->cmd[ring->cur]; 1771 cmd->code = WPI_CMD_TX_DATA; 1772 cmd->flags = 0; 1773 cmd->qid = ring->qid; 1774 cmd->idx = ring->cur; 1775 1776 tx = (struct wpi_cmd_data *)cmd->data; 1777 tx->flags = 0; 1778 1779 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1780 tx->flags |= htole32(WPI_TX_NEED_ACK); 1781 } else if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold) 1782 tx->flags |= htole32(WPI_TX_NEED_RTS | WPI_TX_FULL_TXOP); 1783 1784 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1785 1786 /* retrieve destination node's id */ 1787 tx->id = IEEE80211_IS_MULTICAST(wh->i_addr1) ? WPI_ID_BROADCAST : 1788 WPI_ID_BSS; 1789 1790 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1791 IEEE80211_FC0_TYPE_MGT) { 1792 /* tell h/w to set timestamp in probe responses */ 1793 if ((wh->i_fc[0] & 1794 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1795 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1796 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1797 1798 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1799 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1800 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1801 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1802 tx->timeout = htole16(3); 1803 else 1804 tx->timeout = htole16(2); 1805 } else 1806 tx->timeout = htole16(0); 1807 1808 tx->rate = wpi_plcp_signal(rate); 1809 1810 /* be very persistant at sending frames out */ 1811 tx->rts_ntries = 7; 1812 tx->data_ntries = 15; 1813 1814 tx->ofdm_mask = 0xff; 1815 tx->cck_mask = 0xf; 1816 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1817 1818 tx->len = htole16(m0->m_pkthdr.len); 1819 1820 /* save and trim IEEE802.11 header */ 1821 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 1822 m_adj(m0, hdrlen); 1823 1824 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1825 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1826 if (error != 0 && error != EFBIG) { 1827 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", error); 1828 m_freem(m0); 1829 return error; 1830 } 1831 if (error != 0) { 1832 /* too many fragments, linearize */ 1833 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1834 if (mnew == NULL) { 1835 m_freem(m0); 1836 return ENOMEM; 1837 } 1838 1839 M_COPY_PKTHDR(mnew, m0); 1840 if (m0->m_pkthdr.len > MHLEN) { 1841 MCLGET(mnew, M_DONTWAIT); 1842 if (!(mnew->m_flags & M_EXT)) { 1843 m_freem(m0); 1844 m_freem(mnew); 1845 return ENOMEM; 1846 } 1847 } 1848 1849 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1850 m_freem(m0); 1851 mnew->m_len = mnew->m_pkthdr.len; 1852 m0 = mnew; 1853 1854 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1855 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1856 if (error != 0) { 1857 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 1858 error); 1859 m_freem(m0); 1860 return error; 1861 } 1862 } 1863 1864 data->m = m0; 1865 data->ni = ni; 1866 1867 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1868 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1869 1870 /* first scatter/gather segment is used by the tx data command */ 1871 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1872 (1 + data->map->dm_nsegs) << 24); 1873 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1874 ring->cur * sizeof (struct wpi_tx_cmd)); 1875 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data) + 1876 ((hdrlen + 3) & ~3)); 1877 1878 for (i = 1; i <= data->map->dm_nsegs; i++) { 1879 desc->segs[i].addr = 1880 htole32(data->map->dm_segs[i - 1].ds_addr); 1881 desc->segs[i].len = 1882 htole32(data->map->dm_segs[i - 1].ds_len); 1883 } 1884 1885 ring->queued++; 1886 1887 /* kick ring */ 1888 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1889 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1890 1891 return 0; 1892 } 1893 1894 static void 1895 wpi_start(struct ifnet *ifp) 1896 { 1897 struct wpi_softc *sc = ifp->if_softc; 1898 struct ieee80211com *ic = &sc->sc_ic; 1899 struct ieee80211_node *ni; 1900 struct ether_header *eh; 1901 struct mbuf *m0; 1902 int ac; 1903 1904 /* 1905 * net80211 may still try to send management frames even if the 1906 * IFF_RUNNING flag is not set... 1907 */ 1908 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1909 return; 1910 1911 for (;;) { 1912 IF_DEQUEUE(&ic->ic_mgtq, m0); 1913 if (m0 != NULL) { 1914 1915 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1916 m0->m_pkthdr.rcvif = NULL; 1917 1918 /* management frames go into ring 0 */ 1919 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1920 ifp->if_oerrors++; 1921 continue; 1922 } 1923 #if NBPFILTER > 0 1924 if (ic->ic_rawbpf != NULL) 1925 bpf_mtap(ic->ic_rawbpf, m0); 1926 #endif 1927 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1928 ifp->if_oerrors++; 1929 break; 1930 } 1931 } else { 1932 if (ic->ic_state != IEEE80211_S_RUN) 1933 break; 1934 IFQ_POLL(&ifp->if_snd, m0); 1935 if (m0 == NULL) 1936 break; 1937 1938 if (m0->m_len < sizeof (*eh) && 1939 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 1940 ifp->if_oerrors++; 1941 continue; 1942 } 1943 eh = mtod(m0, struct ether_header *); 1944 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1945 if (ni == NULL) { 1946 m_freem(m0); 1947 ifp->if_oerrors++; 1948 continue; 1949 } 1950 1951 /* classify mbuf so we can find which tx ring to use */ 1952 if (ieee80211_classify(ic, m0, ni) != 0) { 1953 m_freem(m0); 1954 ieee80211_free_node(ni); 1955 ifp->if_oerrors++; 1956 continue; 1957 } 1958 1959 /* no QoS encapsulation for EAPOL frames */ 1960 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 1961 M_WME_GETAC(m0) : WME_AC_BE; 1962 1963 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 1964 /* there is no place left in this ring */ 1965 ifp->if_flags |= IFF_OACTIVE; 1966 break; 1967 } 1968 IFQ_DEQUEUE(&ifp->if_snd, m0); 1969 #if NBPFILTER > 0 1970 if (ifp->if_bpf != NULL) 1971 bpf_mtap(ifp->if_bpf, m0); 1972 #endif 1973 m0 = ieee80211_encap(ic, m0, ni); 1974 if (m0 == NULL) { 1975 ieee80211_free_node(ni); 1976 ifp->if_oerrors++; 1977 continue; 1978 } 1979 #if NBPFILTER > 0 1980 if (ic->ic_rawbpf != NULL) 1981 bpf_mtap(ic->ic_rawbpf, m0); 1982 #endif 1983 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 1984 ieee80211_free_node(ni); 1985 ifp->if_oerrors++; 1986 break; 1987 } 1988 } 1989 1990 sc->sc_tx_timer = 5; 1991 ifp->if_timer = 1; 1992 } 1993 } 1994 1995 static void 1996 wpi_watchdog(struct ifnet *ifp) 1997 { 1998 struct wpi_softc *sc = ifp->if_softc; 1999 2000 ifp->if_timer = 0; 2001 2002 if (sc->sc_tx_timer > 0) { 2003 if (--sc->sc_tx_timer == 0) { 2004 aprint_error_dev(sc->sc_dev, "device timeout\n"); 2005 ifp->if_oerrors++; 2006 ifp->if_flags &= ~IFF_UP; 2007 wpi_stop(ifp, 1); 2008 return; 2009 } 2010 ifp->if_timer = 1; 2011 } 2012 2013 ieee80211_watchdog(&sc->sc_ic); 2014 } 2015 2016 static int 2017 wpi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2018 { 2019 #define IS_RUNNING(ifp) \ 2020 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 2021 2022 struct wpi_softc *sc = ifp->if_softc; 2023 struct ieee80211com *ic = &sc->sc_ic; 2024 int s, error = 0; 2025 2026 s = splnet(); 2027 2028 switch (cmd) { 2029 case SIOCSIFFLAGS: 2030 if (ifp->if_flags & IFF_UP) { 2031 if (!(ifp->if_flags & IFF_RUNNING)) 2032 wpi_init(ifp); 2033 } else { 2034 if (ifp->if_flags & IFF_RUNNING) 2035 wpi_stop(ifp, 1); 2036 } 2037 break; 2038 2039 case SIOCADDMULTI: 2040 case SIOCDELMULTI: 2041 /* XXX no h/w multicast filter? --dyoung */ 2042 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 2043 /* setup multicast filter, etc */ 2044 error = 0; 2045 } 2046 break; 2047 2048 default: 2049 error = ieee80211_ioctl(ic, cmd, data); 2050 } 2051 2052 if (error == ENETRESET) { 2053 if (IS_RUNNING(ifp) && 2054 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 2055 wpi_init(ifp); 2056 error = 0; 2057 } 2058 2059 splx(s); 2060 return error; 2061 2062 #undef IS_RUNNING 2063 } 2064 2065 /* 2066 * Extract various information from EEPROM. 2067 */ 2068 static void 2069 wpi_read_eeprom(struct wpi_softc *sc) 2070 { 2071 struct ieee80211com *ic = &sc->sc_ic; 2072 char domain[4]; 2073 int i; 2074 2075 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap, 1); 2076 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev, 2); 2077 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2078 2079 DPRINTF(("cap=%x rev=%x type=%x\n", sc->cap, le16toh(sc->rev), 2080 sc->type)); 2081 2082 /* read and print regulatory domain */ 2083 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, domain, 4); 2084 aprint_normal_dev(sc->sc_dev, "%.4s", domain); 2085 2086 /* read and print MAC address */ 2087 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2088 aprint_normal(", address %s\n", ether_sprintf(ic->ic_myaddr)); 2089 2090 /* read the list of authorized channels */ 2091 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2092 wpi_read_eeprom_channels(sc, i); 2093 2094 /* read the list of power groups */ 2095 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2096 wpi_read_eeprom_group(sc, i); 2097 } 2098 2099 static void 2100 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 2101 { 2102 struct ieee80211com *ic = &sc->sc_ic; 2103 const struct wpi_chan_band *band = &wpi_bands[n]; 2104 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 2105 int chan, i; 2106 2107 wpi_read_prom_data(sc, band->addr, channels, 2108 band->nchan * sizeof (struct wpi_eeprom_chan)); 2109 2110 for (i = 0; i < band->nchan; i++) { 2111 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) 2112 continue; 2113 2114 chan = band->chan[i]; 2115 2116 if (n == 0) { /* 2GHz band */ 2117 ic->ic_channels[chan].ic_freq = 2118 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 2119 ic->ic_channels[chan].ic_flags = 2120 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 2121 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 2122 2123 } else { /* 5GHz band */ 2124 /* 2125 * Some 3945abg adapters support channels 7, 8, 11 2126 * and 12 in the 2GHz *and* 5GHz bands. 2127 * Because of limitations in our net80211(9) stack, 2128 * we can't support these channels in 5GHz band. 2129 */ 2130 if (chan <= 14) 2131 continue; 2132 2133 ic->ic_channels[chan].ic_freq = 2134 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 2135 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_A; 2136 } 2137 2138 /* is active scan allowed on this channel? */ 2139 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 2140 ic->ic_channels[chan].ic_flags |= 2141 IEEE80211_CHAN_PASSIVE; 2142 } 2143 2144 /* save maximum allowed power for this channel */ 2145 sc->maxpwr[chan] = channels[i].maxpwr; 2146 2147 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d\n", 2148 chan, channels[i].flags, sc->maxpwr[chan])); 2149 } 2150 } 2151 2152 static void 2153 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 2154 { 2155 struct wpi_power_group *group = &sc->groups[n]; 2156 struct wpi_eeprom_group rgroup; 2157 int i; 2158 2159 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 2160 sizeof rgroup); 2161 2162 /* save power group information */ 2163 group->chan = rgroup.chan; 2164 group->maxpwr = rgroup.maxpwr; 2165 /* temperature at which the samples were taken */ 2166 group->temp = (int16_t)le16toh(rgroup.temp); 2167 2168 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 2169 group->chan, group->maxpwr, group->temp)); 2170 2171 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 2172 group->samples[i].index = rgroup.samples[i].index; 2173 group->samples[i].power = rgroup.samples[i].power; 2174 2175 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 2176 group->samples[i].index, group->samples[i].power)); 2177 } 2178 } 2179 2180 /* 2181 * Send a command to the firmware. 2182 */ 2183 static int 2184 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2185 { 2186 struct wpi_tx_ring *ring = &sc->cmdq; 2187 struct wpi_tx_desc *desc; 2188 struct wpi_tx_cmd *cmd; 2189 2190 KASSERT(size <= sizeof cmd->data); 2191 2192 desc = &ring->desc[ring->cur]; 2193 cmd = &ring->cmd[ring->cur]; 2194 2195 cmd->code = code; 2196 cmd->flags = 0; 2197 cmd->qid = ring->qid; 2198 cmd->idx = ring->cur; 2199 memcpy(cmd->data, buf, size); 2200 2201 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2202 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2203 ring->cur * sizeof (struct wpi_tx_cmd)); 2204 desc->segs[0].len = htole32(4 + size); 2205 2206 /* kick cmd ring */ 2207 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2208 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2209 2210 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 2211 } 2212 2213 static int 2214 wpi_wme_update(struct ieee80211com *ic) 2215 { 2216 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2217 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2218 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2219 const struct wmeParams *wmep; 2220 struct wpi_wme_setup wme; 2221 int ac; 2222 2223 /* don't override default WME values if WME is not actually enabled */ 2224 if (!(ic->ic_flags & IEEE80211_F_WME)) 2225 return 0; 2226 2227 wme.flags = 0; 2228 for (ac = 0; ac < WME_NUM_AC; ac++) { 2229 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2230 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2231 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2232 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2233 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2234 2235 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2236 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2237 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2238 } 2239 2240 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2241 #undef WPI_USEC 2242 #undef WPI_EXP2 2243 } 2244 2245 /* 2246 * Configure h/w multi-rate retries. 2247 */ 2248 static int 2249 wpi_mrr_setup(struct wpi_softc *sc) 2250 { 2251 struct ieee80211com *ic = &sc->sc_ic; 2252 struct wpi_mrr_setup mrr; 2253 int i, error; 2254 2255 /* CCK rates (not used with 802.11a) */ 2256 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2257 mrr.rates[i].flags = 0; 2258 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2259 /* fallback to the immediate lower CCK rate (if any) */ 2260 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2261 /* try one time at this rate before falling back to "next" */ 2262 mrr.rates[i].ntries = 1; 2263 } 2264 2265 /* OFDM rates (not used with 802.11b) */ 2266 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2267 mrr.rates[i].flags = 0; 2268 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 2269 /* fallback to the immediate lower rate (if any) */ 2270 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2271 mrr.rates[i].next = (i == WPI_OFDM6) ? 2272 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2273 WPI_OFDM6 : WPI_CCK2) : 2274 i - 1; 2275 /* try one time at this rate before falling back to "next" */ 2276 mrr.rates[i].ntries = 1; 2277 } 2278 2279 /* setup MRR for control frames */ 2280 mrr.which = htole32(WPI_MRR_CTL); 2281 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2282 if (error != 0) { 2283 aprint_error_dev(sc->sc_dev, "could not setup MRR for control frames\n"); 2284 return error; 2285 } 2286 2287 /* setup MRR for data frames */ 2288 mrr.which = htole32(WPI_MRR_DATA); 2289 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2290 if (error != 0) { 2291 aprint_error_dev(sc->sc_dev, "could not setup MRR for data frames\n"); 2292 return error; 2293 } 2294 2295 return 0; 2296 } 2297 2298 static void 2299 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2300 { 2301 struct wpi_cmd_led led; 2302 2303 led.which = which; 2304 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2305 led.off = off; 2306 led.on = on; 2307 2308 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2309 } 2310 2311 static void 2312 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2313 { 2314 struct wpi_cmd_tsf tsf; 2315 uint64_t val, mod; 2316 2317 memset(&tsf, 0, sizeof tsf); 2318 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2319 tsf.bintval = htole16(ni->ni_intval); 2320 tsf.lintval = htole16(10); 2321 2322 /* compute remaining time until next beacon */ 2323 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2324 mod = le64toh(tsf.tstamp) % val; 2325 tsf.binitval = htole32((uint32_t)(val - mod)); 2326 2327 DPRINTF(("TSF bintval=%u tstamp=%" PRId64 ", init=%u\n", 2328 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2329 2330 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2331 aprint_error_dev(sc->sc_dev, "could not enable TSF\n"); 2332 } 2333 2334 /* 2335 * Update Tx power to match what is defined for channel `c'. 2336 */ 2337 static int 2338 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 2339 { 2340 struct ieee80211com *ic = &sc->sc_ic; 2341 struct wpi_power_group *group; 2342 struct wpi_cmd_txpower txpower; 2343 u_int chan; 2344 int i; 2345 2346 /* get channel number */ 2347 chan = ieee80211_chan2ieee(ic, c); 2348 2349 /* find the power group to which this channel belongs */ 2350 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2351 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 2352 if (chan <= group->chan) 2353 break; 2354 } else 2355 group = &sc->groups[0]; 2356 2357 memset(&txpower, 0, sizeof txpower); 2358 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 2359 txpower.chan = htole16(chan); 2360 2361 /* set Tx power for all OFDM and CCK rates */ 2362 for (i = 0; i <= 11 ; i++) { 2363 /* retrieve Tx power for this channel/rate combination */ 2364 int idx = wpi_get_power_index(sc, group, c, 2365 wpi_ridx_to_rate[i]); 2366 2367 txpower.rates[i].plcp = wpi_ridx_to_plcp[i]; 2368 2369 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2370 txpower.rates[i].rf_gain = wpi_rf_gain_5ghz[idx]; 2371 txpower.rates[i].dsp_gain = wpi_dsp_gain_5ghz[idx]; 2372 } else { 2373 txpower.rates[i].rf_gain = wpi_rf_gain_2ghz[idx]; 2374 txpower.rates[i].dsp_gain = wpi_dsp_gain_2ghz[idx]; 2375 } 2376 DPRINTF(("chan %d/rate %d: power index %d\n", chan, 2377 wpi_ridx_to_rate[i], idx)); 2378 } 2379 2380 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 2381 } 2382 2383 /* 2384 * Determine Tx power index for a given channel/rate combination. 2385 * This takes into account the regulatory information from EEPROM and the 2386 * current temperature. 2387 */ 2388 static int 2389 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 2390 struct ieee80211_channel *c, int rate) 2391 { 2392 /* fixed-point arithmetic division using a n-bit fractional part */ 2393 #define fdivround(a, b, n) \ 2394 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 2395 2396 /* linear interpolation */ 2397 #define interpolate(x, x1, y1, x2, y2, n) \ 2398 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 2399 2400 struct ieee80211com *ic = &sc->sc_ic; 2401 struct wpi_power_sample *sample; 2402 int pwr, idx; 2403 u_int chan; 2404 2405 /* get channel number */ 2406 chan = ieee80211_chan2ieee(ic, c); 2407 2408 /* default power is group's maximum power - 3dB */ 2409 pwr = group->maxpwr / 2; 2410 2411 /* decrease power for highest OFDM rates to reduce distortion */ 2412 switch (rate) { 2413 case 72: /* 36Mb/s */ 2414 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 2415 break; 2416 case 96: /* 48Mb/s */ 2417 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 2418 break; 2419 case 108: /* 54Mb/s */ 2420 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 2421 break; 2422 } 2423 2424 /* never exceed channel's maximum allowed Tx power */ 2425 pwr = min(pwr, sc->maxpwr[chan]); 2426 2427 /* retrieve power index into gain tables from samples */ 2428 for (sample = group->samples; sample < &group->samples[3]; sample++) 2429 if (pwr > sample[1].power) 2430 break; 2431 /* fixed-point linear interpolation using a 19-bit fractional part */ 2432 idx = interpolate(pwr, sample[0].power, sample[0].index, 2433 sample[1].power, sample[1].index, 19); 2434 2435 /* 2436 * Adjust power index based on current temperature: 2437 * - if cooler than factory-calibrated: decrease output power 2438 * - if warmer than factory-calibrated: increase output power 2439 */ 2440 idx -= (sc->temp - group->temp) * 11 / 100; 2441 2442 /* decrease power for CCK rates (-5dB) */ 2443 if (!WPI_RATE_IS_OFDM(rate)) 2444 idx += 10; 2445 2446 /* keep power index in a valid range */ 2447 if (idx < 0) 2448 return 0; 2449 if (idx > WPI_MAX_PWR_INDEX) 2450 return WPI_MAX_PWR_INDEX; 2451 return idx; 2452 2453 #undef interpolate 2454 #undef fdivround 2455 } 2456 2457 /* 2458 * Build a beacon frame that the firmware will broadcast periodically in 2459 * IBSS or HostAP modes. 2460 */ 2461 static int 2462 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2463 { 2464 struct ieee80211com *ic = &sc->sc_ic; 2465 struct wpi_tx_ring *ring = &sc->cmdq; 2466 struct wpi_tx_desc *desc; 2467 struct wpi_tx_data *data; 2468 struct wpi_tx_cmd *cmd; 2469 struct wpi_cmd_beacon *bcn; 2470 struct ieee80211_beacon_offsets bo; 2471 struct mbuf *m0; 2472 int error; 2473 2474 desc = &ring->desc[ring->cur]; 2475 data = &ring->data[ring->cur]; 2476 2477 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2478 if (m0 == NULL) { 2479 aprint_error_dev(sc->sc_dev, "could not allocate beacon frame\n"); 2480 return ENOMEM; 2481 } 2482 2483 cmd = &ring->cmd[ring->cur]; 2484 cmd->code = WPI_CMD_SET_BEACON; 2485 cmd->flags = 0; 2486 cmd->qid = ring->qid; 2487 cmd->idx = ring->cur; 2488 2489 bcn = (struct wpi_cmd_beacon *)cmd->data; 2490 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2491 bcn->id = WPI_ID_BROADCAST; 2492 bcn->ofdm_mask = 0xff; 2493 bcn->cck_mask = 0x0f; 2494 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2495 bcn->len = htole16(m0->m_pkthdr.len); 2496 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2497 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2498 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2499 2500 /* save and trim IEEE802.11 header */ 2501 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (void *)&bcn->wh); 2502 m_adj(m0, sizeof (struct ieee80211_frame)); 2503 2504 /* assume beacon frame is contiguous */ 2505 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2506 BUS_DMA_READ | BUS_DMA_NOWAIT); 2507 if (error) { 2508 aprint_error_dev(sc->sc_dev, "could not map beacon\n"); 2509 m_freem(m0); 2510 return error; 2511 } 2512 2513 data->m = m0; 2514 2515 /* first scatter/gather segment is used by the beacon command */ 2516 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2517 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2518 ring->cur * sizeof (struct wpi_tx_cmd)); 2519 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2520 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2521 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2522 2523 /* kick cmd ring */ 2524 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2525 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2526 2527 return 0; 2528 } 2529 2530 static int 2531 wpi_auth(struct wpi_softc *sc) 2532 { 2533 struct ieee80211com *ic = &sc->sc_ic; 2534 struct ieee80211_node *ni = ic->ic_bss; 2535 struct wpi_node_info node; 2536 int error; 2537 2538 /* update adapter's configuration */ 2539 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2540 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2541 sc->config.flags = htole32(WPI_CONFIG_TSF); 2542 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2543 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2544 WPI_CONFIG_24GHZ); 2545 } 2546 switch (ic->ic_curmode) { 2547 case IEEE80211_MODE_11A: 2548 sc->config.cck_mask = 0; 2549 sc->config.ofdm_mask = 0x15; 2550 break; 2551 case IEEE80211_MODE_11B: 2552 sc->config.cck_mask = 0x03; 2553 sc->config.ofdm_mask = 0; 2554 break; 2555 default: /* assume 802.11b/g */ 2556 sc->config.cck_mask = 0x0f; 2557 sc->config.ofdm_mask = 0x15; 2558 } 2559 2560 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2561 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2562 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2563 sizeof (struct wpi_config), 1); 2564 if (error != 0) { 2565 aprint_error_dev(sc->sc_dev, "could not configure\n"); 2566 return error; 2567 } 2568 2569 /* configuration has changed, set Tx power accordingly */ 2570 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2571 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2572 return error; 2573 } 2574 2575 /* add default node */ 2576 memset(&node, 0, sizeof node); 2577 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2578 node.id = WPI_ID_BSS; 2579 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2580 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2581 node.action = htole32(WPI_ACTION_SET_RATE); 2582 node.antenna = WPI_ANTENNA_BOTH; 2583 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2584 if (error != 0) { 2585 aprint_error_dev(sc->sc_dev, "could not add BSS node\n"); 2586 return error; 2587 } 2588 2589 return 0; 2590 } 2591 2592 /* 2593 * Send a scan request to the firmware. Since this command is huge, we map it 2594 * into a mbuf instead of using the pre-allocated set of commands. 2595 */ 2596 static int 2597 wpi_scan(struct wpi_softc *sc, uint16_t flags) 2598 { 2599 struct ieee80211com *ic = &sc->sc_ic; 2600 struct wpi_tx_ring *ring = &sc->cmdq; 2601 struct wpi_tx_desc *desc; 2602 struct wpi_tx_data *data; 2603 struct wpi_tx_cmd *cmd; 2604 struct wpi_scan_hdr *hdr; 2605 struct wpi_scan_chan *chan; 2606 struct ieee80211_frame *wh; 2607 struct ieee80211_rateset *rs; 2608 struct ieee80211_channel *c; 2609 enum ieee80211_phymode mode; 2610 uint8_t *frm; 2611 int nrates, pktlen, error; 2612 2613 desc = &ring->desc[ring->cur]; 2614 data = &ring->data[ring->cur]; 2615 2616 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2617 if (data->m == NULL) { 2618 aprint_error_dev(sc->sc_dev, 2619 "could not allocate mbuf for scan command\n"); 2620 return ENOMEM; 2621 } 2622 2623 MCLGET(data->m, M_DONTWAIT); 2624 if (!(data->m->m_flags & M_EXT)) { 2625 m_freem(data->m); 2626 data->m = NULL; 2627 aprint_error_dev(sc->sc_dev, 2628 "could not allocate mbuf for scan command\n"); 2629 return ENOMEM; 2630 } 2631 2632 cmd = mtod(data->m, struct wpi_tx_cmd *); 2633 cmd->code = WPI_CMD_SCAN; 2634 cmd->flags = 0; 2635 cmd->qid = ring->qid; 2636 cmd->idx = ring->cur; 2637 2638 hdr = (struct wpi_scan_hdr *)cmd->data; 2639 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2640 hdr->txflags = htole32(WPI_TX_AUTO_SEQ); 2641 hdr->id = WPI_ID_BROADCAST; 2642 hdr->lifetime = htole32(WPI_LIFETIME_INFINITE); 2643 2644 /* 2645 * Move to the next channel if no packets are received within 5 msecs 2646 * after sending the probe request (this helps to reduce the duration 2647 * of active scans). 2648 */ 2649 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2650 hdr->plcp_threshold = htole16(1); /* min # of packets */ 2651 2652 if (flags & IEEE80211_CHAN_A) { 2653 hdr->crc_threshold = htole16(1); 2654 /* send probe requests at 6Mbps */ 2655 hdr->rate = wpi_plcp_signal(12); 2656 } else { 2657 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2658 /* send probe requests at 1Mbps */ 2659 hdr->rate = wpi_plcp_signal(2); 2660 } 2661 2662 /* for directed scans, firmware inserts the essid IE itself */ 2663 hdr->essid[0].id = IEEE80211_ELEMID_SSID; 2664 hdr->essid[0].len = ic->ic_des_esslen; 2665 memcpy(hdr->essid[0].data, ic->ic_des_essid, ic->ic_des_esslen); 2666 2667 /* 2668 * Build a probe request frame. Most of the following code is a 2669 * copy & paste of what is done in net80211. 2670 */ 2671 wh = (struct ieee80211_frame *)(hdr + 1); 2672 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2673 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2674 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2675 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2676 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2677 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2678 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2679 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2680 2681 frm = (uint8_t *)(wh + 1); 2682 2683 /* add empty essid IE (firmware generates it for directed scans) */ 2684 *frm++ = IEEE80211_ELEMID_SSID; 2685 *frm++ = 0; 2686 2687 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2688 rs = &ic->ic_sup_rates[mode]; 2689 2690 /* add supported rates IE */ 2691 *frm++ = IEEE80211_ELEMID_RATES; 2692 nrates = rs->rs_nrates; 2693 if (nrates > IEEE80211_RATE_SIZE) 2694 nrates = IEEE80211_RATE_SIZE; 2695 *frm++ = nrates; 2696 memcpy(frm, rs->rs_rates, nrates); 2697 frm += nrates; 2698 2699 /* add supported xrates IE */ 2700 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2701 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2702 *frm++ = IEEE80211_ELEMID_XRATES; 2703 *frm++ = nrates; 2704 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2705 frm += nrates; 2706 } 2707 2708 /* setup length of probe request */ 2709 hdr->paylen = htole16(frm - (uint8_t *)wh); 2710 2711 chan = (struct wpi_scan_chan *)frm; 2712 for (c = &ic->ic_channels[1]; 2713 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2714 if ((c->ic_flags & flags) != flags) 2715 continue; 2716 2717 chan->chan = ieee80211_chan2ieee(ic, c); 2718 chan->flags = 0; 2719 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2720 chan->flags |= WPI_CHAN_ACTIVE; 2721 if (ic->ic_des_esslen != 0) 2722 chan->flags |= WPI_CHAN_DIRECT; 2723 } 2724 chan->dsp_gain = 0x6e; 2725 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2726 chan->rf_gain = 0x3b; 2727 chan->active = htole16(10); 2728 chan->passive = htole16(110); 2729 } else { 2730 chan->rf_gain = 0x28; 2731 chan->active = htole16(20); 2732 chan->passive = htole16(120); 2733 } 2734 hdr->nchan++; 2735 chan++; 2736 2737 frm += sizeof (struct wpi_scan_chan); 2738 } 2739 hdr->len = htole16(frm - (uint8_t *)hdr); 2740 pktlen = frm - (uint8_t *)cmd; 2741 2742 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2743 NULL, BUS_DMA_NOWAIT); 2744 if (error) { 2745 aprint_error_dev(sc->sc_dev, "could not map scan command\n"); 2746 m_freem(data->m); 2747 data->m = NULL; 2748 return error; 2749 } 2750 2751 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2752 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2753 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2754 2755 /* kick cmd ring */ 2756 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2757 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2758 2759 return 0; /* will be notified async. of failure/success */ 2760 } 2761 2762 static int 2763 wpi_config(struct wpi_softc *sc) 2764 { 2765 struct ieee80211com *ic = &sc->sc_ic; 2766 struct ifnet *ifp = ic->ic_ifp; 2767 struct wpi_power power; 2768 struct wpi_bluetooth bluetooth; 2769 struct wpi_node_info node; 2770 int error; 2771 2772 memset(&power, 0, sizeof power); 2773 power.flags = htole32(WPI_POWER_CAM | 0x8); 2774 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2775 if (error != 0) { 2776 aprint_error_dev(sc->sc_dev, "could not set power mode\n"); 2777 return error; 2778 } 2779 2780 /* configure bluetooth coexistence */ 2781 memset(&bluetooth, 0, sizeof bluetooth); 2782 bluetooth.flags = 3; 2783 bluetooth.lead = 0xaa; 2784 bluetooth.kill = 1; 2785 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2786 0); 2787 if (error != 0) { 2788 aprint_error_dev(sc->sc_dev, 2789 "could not configure bluetooth coexistence\n"); 2790 return error; 2791 } 2792 2793 /* configure adapter */ 2794 memset(&sc->config, 0, sizeof (struct wpi_config)); 2795 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2796 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2797 /*set default channel*/ 2798 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2799 sc->config.flags = htole32(WPI_CONFIG_TSF); 2800 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2801 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2802 WPI_CONFIG_24GHZ); 2803 } 2804 sc->config.filter = 0; 2805 switch (ic->ic_opmode) { 2806 case IEEE80211_M_STA: 2807 sc->config.mode = WPI_MODE_STA; 2808 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2809 break; 2810 case IEEE80211_M_IBSS: 2811 case IEEE80211_M_AHDEMO: 2812 sc->config.mode = WPI_MODE_IBSS; 2813 break; 2814 case IEEE80211_M_HOSTAP: 2815 sc->config.mode = WPI_MODE_HOSTAP; 2816 break; 2817 case IEEE80211_M_MONITOR: 2818 sc->config.mode = WPI_MODE_MONITOR; 2819 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2820 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2821 break; 2822 } 2823 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2824 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2825 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2826 sizeof (struct wpi_config), 0); 2827 if (error != 0) { 2828 aprint_error_dev(sc->sc_dev, "configure command failed\n"); 2829 return error; 2830 } 2831 2832 /* configuration has changed, set Tx power accordingly */ 2833 if ((error = wpi_set_txpower(sc, ic->ic_ibss_chan, 0)) != 0) { 2834 aprint_error_dev(sc->sc_dev, "could not set Tx power\n"); 2835 return error; 2836 } 2837 2838 /* add broadcast node */ 2839 memset(&node, 0, sizeof node); 2840 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2841 node.id = WPI_ID_BROADCAST; 2842 node.rate = wpi_plcp_signal(2); 2843 node.action = htole32(WPI_ACTION_SET_RATE); 2844 node.antenna = WPI_ANTENNA_BOTH; 2845 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2846 if (error != 0) { 2847 aprint_error_dev(sc->sc_dev, "could not add broadcast node\n"); 2848 return error; 2849 } 2850 2851 if ((error = wpi_mrr_setup(sc)) != 0) { 2852 aprint_error_dev(sc->sc_dev, "could not setup MRR\n"); 2853 return error; 2854 } 2855 2856 return 0; 2857 } 2858 2859 static void 2860 wpi_stop_master(struct wpi_softc *sc) 2861 { 2862 uint32_t tmp; 2863 int ntries; 2864 2865 tmp = WPI_READ(sc, WPI_RESET); 2866 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2867 2868 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2869 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2870 return; /* already asleep */ 2871 2872 for (ntries = 0; ntries < 100; ntries++) { 2873 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2874 break; 2875 DELAY(10); 2876 } 2877 if (ntries == 100) { 2878 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 2879 } 2880 } 2881 2882 static int 2883 wpi_power_up(struct wpi_softc *sc) 2884 { 2885 uint32_t tmp; 2886 int ntries; 2887 2888 wpi_mem_lock(sc); 2889 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2890 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2891 wpi_mem_unlock(sc); 2892 2893 for (ntries = 0; ntries < 5000; ntries++) { 2894 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2895 break; 2896 DELAY(10); 2897 } 2898 if (ntries == 5000) { 2899 aprint_error_dev(sc->sc_dev, "timeout waiting for NIC to power up\n"); 2900 return ETIMEDOUT; 2901 } 2902 return 0; 2903 } 2904 2905 static int 2906 wpi_reset(struct wpi_softc *sc) 2907 { 2908 uint32_t tmp; 2909 int ntries; 2910 2911 /* clear any pending interrupts */ 2912 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2913 2914 tmp = WPI_READ(sc, WPI_PLL_CTL); 2915 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2916 2917 tmp = WPI_READ(sc, WPI_CHICKEN); 2918 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2919 2920 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2921 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2922 2923 /* wait for clock stabilization */ 2924 for (ntries = 0; ntries < 1000; ntries++) { 2925 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2926 break; 2927 DELAY(10); 2928 } 2929 if (ntries == 1000) { 2930 aprint_error_dev(sc->sc_dev, 2931 "timeout waiting for clock stabilization\n"); 2932 return ETIMEDOUT; 2933 } 2934 2935 /* initialize EEPROM */ 2936 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2937 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2938 aprint_error_dev(sc->sc_dev, "EEPROM not found\n"); 2939 return EIO; 2940 } 2941 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2942 2943 return 0; 2944 } 2945 2946 static void 2947 wpi_hw_config(struct wpi_softc *sc) 2948 { 2949 uint32_t rev, hw; 2950 2951 /* voodoo from the reference driver */ 2952 hw = WPI_READ(sc, WPI_HWCONFIG); 2953 2954 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 2955 rev = PCI_REVISION(rev); 2956 if ((rev & 0xc0) == 0x40) 2957 hw |= WPI_HW_ALM_MB; 2958 else if (!(rev & 0x80)) 2959 hw |= WPI_HW_ALM_MM; 2960 2961 if (sc->cap == 0x80) 2962 hw |= WPI_HW_SKU_MRC; 2963 2964 hw &= ~WPI_HW_REV_D; 2965 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2966 hw |= WPI_HW_REV_D; 2967 2968 if (sc->type > 1) 2969 hw |= WPI_HW_TYPE_B; 2970 2971 DPRINTF(("setting h/w config %x\n", hw)); 2972 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2973 } 2974 2975 static int 2976 wpi_init(struct ifnet *ifp) 2977 { 2978 struct wpi_softc *sc = ifp->if_softc; 2979 struct ieee80211com *ic = &sc->sc_ic; 2980 uint32_t tmp; 2981 int qid, ntries, error; 2982 2983 wpi_stop(ifp,1); 2984 (void)wpi_reset(sc); 2985 2986 wpi_mem_lock(sc); 2987 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 2988 DELAY(20); 2989 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 2990 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 2991 wpi_mem_unlock(sc); 2992 2993 (void)wpi_power_up(sc); 2994 wpi_hw_config(sc); 2995 2996 /* init Rx ring */ 2997 wpi_mem_lock(sc); 2998 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 2999 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3000 offsetof(struct wpi_shared, next)); 3001 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3002 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3003 wpi_mem_unlock(sc); 3004 3005 /* init Tx rings */ 3006 wpi_mem_lock(sc); 3007 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3008 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3009 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3010 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3011 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3012 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3013 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3014 3015 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3016 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3017 3018 for (qid = 0; qid < 6; qid++) { 3019 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3020 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3021 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3022 } 3023 wpi_mem_unlock(sc); 3024 3025 /* clear "radio off" and "disable command" bits (reversed logic) */ 3026 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3027 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3028 3029 /* clear any pending interrupts */ 3030 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3031 /* enable interrupts */ 3032 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3033 3034 /* not sure why/if this is necessary... */ 3035 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3036 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3037 3038 if ((error = wpi_load_firmware(sc)) != 0) { 3039 aprint_error_dev(sc->sc_dev, "could not load firmware\n"); 3040 goto fail1; 3041 } 3042 3043 /* Check the status of the radio switch */ 3044 if (wpi_getrfkill(sc)) { 3045 aprint_error_dev(sc->sc_dev, "Radio is disabled by hardware switch\n"); 3046 error = EBUSY; 3047 goto fail1; 3048 } 3049 3050 /* wait for thermal sensors to calibrate */ 3051 for (ntries = 0; ntries < 1000; ntries++) { 3052 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3053 break; 3054 DELAY(10); 3055 } 3056 if (ntries == 1000) { 3057 aprint_error_dev(sc->sc_dev, 3058 "timeout waiting for thermal sensors calibration\n"); 3059 error = ETIMEDOUT; 3060 goto fail1; 3061 } 3062 3063 DPRINTF(("temperature %d\n", sc->temp)); 3064 3065 if ((error = wpi_config(sc)) != 0) { 3066 aprint_error_dev(sc->sc_dev, "could not configure device\n"); 3067 goto fail1; 3068 } 3069 3070 ifp->if_flags &= ~IFF_OACTIVE; 3071 ifp->if_flags |= IFF_RUNNING; 3072 3073 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 3074 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 3075 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3076 } 3077 else 3078 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 3079 3080 return 0; 3081 3082 fail1: wpi_stop(ifp, 1); 3083 return error; 3084 } 3085 3086 3087 static void 3088 wpi_stop(struct ifnet *ifp, int disable) 3089 { 3090 struct wpi_softc *sc = ifp->if_softc; 3091 struct ieee80211com *ic = &sc->sc_ic; 3092 uint32_t tmp; 3093 int ac; 3094 3095 ifp->if_timer = sc->sc_tx_timer = 0; 3096 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3097 3098 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 3099 3100 /* disable interrupts */ 3101 WPI_WRITE(sc, WPI_MASK, 0); 3102 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3103 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3104 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3105 3106 wpi_mem_lock(sc); 3107 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3108 wpi_mem_unlock(sc); 3109 3110 /* reset all Tx rings */ 3111 for (ac = 0; ac < 4; ac++) 3112 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3113 wpi_reset_tx_ring(sc, &sc->cmdq); 3114 3115 /* reset Rx ring */ 3116 wpi_reset_rx_ring(sc, &sc->rxq); 3117 3118 wpi_mem_lock(sc); 3119 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3120 wpi_mem_unlock(sc); 3121 3122 DELAY(5); 3123 3124 wpi_stop_master(sc); 3125 3126 tmp = WPI_READ(sc, WPI_RESET); 3127 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3128 } 3129 3130 static bool 3131 wpi_resume(device_t dv) 3132 { 3133 struct wpi_softc *sc = device_private(dv); 3134 3135 pci_disable_retry(sc->sc_pct, sc->sc_pcitag); 3136 (void)wpi_reset(sc); 3137 3138 return true; 3139 } 3140 3141 /* 3142 * Return whether or not the radio is enabled in hardware 3143 * (i.e. the rfkill switch is "off"). 3144 */ 3145 static int 3146 wpi_getrfkill(struct wpi_softc *sc) 3147 { 3148 uint32_t tmp; 3149 3150 wpi_mem_lock(sc); 3151 tmp = wpi_mem_read(sc, WPI_MEM_RFKILL); 3152 wpi_mem_unlock(sc); 3153 3154 return !(tmp & 0x01); 3155 } 3156 3157 static int 3158 wpi_sysctl_radio(SYSCTLFN_ARGS) 3159 { 3160 struct sysctlnode node; 3161 struct wpi_softc *sc; 3162 int val, error; 3163 3164 node = *rnode; 3165 sc = (struct wpi_softc *)node.sysctl_data; 3166 3167 val = !wpi_getrfkill(sc); 3168 3169 node.sysctl_data = &val; 3170 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 3171 3172 if (error || newp == NULL) 3173 return error; 3174 3175 return 0; 3176 } 3177 3178 static void 3179 wpi_sysctlattach(struct wpi_softc *sc) 3180 { 3181 int rc; 3182 const struct sysctlnode *rnode; 3183 const struct sysctlnode *cnode; 3184 3185 struct sysctllog **clog = &sc->sc_sysctllog; 3186 3187 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 3188 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 3189 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 3190 goto err; 3191 3192 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 3193 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 3194 SYSCTL_DESCR("wpi controls and statistics"), 3195 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 3196 goto err; 3197 3198 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3199 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 3200 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 3201 wpi_sysctl_radio, 0, sc, 0, CTL_CREATE, CTL_EOL)) != 0) 3202 goto err; 3203 3204 #ifdef WPI_DEBUG 3205 /* control debugging printfs */ 3206 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 3207 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 3208 "debug", SYSCTL_DESCR("Enable debugging output"), 3209 NULL, 0, &wpi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 3210 goto err; 3211 #endif 3212 3213 return; 3214 err: 3215 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 3216 } 3217
Indexes created Mon Sep 29 21:09:56 GMT 2025