if_iwi.c revision 1.18
1 /* $NetBSD: if_iwi.c,v 1.18 2005/08/30 21:14:29 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2004, 2005 5 * Damien Bergamini <damien.bergamini (at) free.fr>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: if_iwi.c,v 1.18 2005/08/30 21:14:29 skrll Exp $"); 32 33 /*- 34 * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver 35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 36 */ 37 38 #include "bpfilter.h" 39 40 #include <sys/param.h> 41 #include <sys/sockio.h> 42 #include <sys/sysctl.h> 43 #include <sys/mbuf.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/systm.h> 47 #include <sys/malloc.h> 48 #include <sys/conf.h> 49 50 #include <machine/bus.h> 51 #include <machine/endian.h> 52 #include <machine/intr.h> 53 54 #include <dev/pci/pcireg.h> 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/pcidevs.h> 57 58 #if NBPFILTER > 0 59 #include <net/bpf.h> 60 #endif 61 #include <net/if.h> 62 #include <net/if_arp.h> 63 #include <net/if_dl.h> 64 #include <net/if_ether.h> 65 #include <net/if_media.h> 66 #include <net/if_types.h> 67 68 #include <net80211/ieee80211_var.h> 69 #include <net80211/ieee80211_radiotap.h> 70 71 #include <netinet/in.h> 72 #include <netinet/in_systm.h> 73 #include <netinet/in_var.h> 74 #include <netinet/ip.h> 75 76 #include <crypto/arc4/arc4.h> 77 78 #include <dev/pci/if_iwireg.h> 79 #include <dev/pci/if_iwivar.h> 80 81 static const struct ieee80211_rateset iwi_rateset_11a = 82 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 83 84 static const struct ieee80211_rateset iwi_rateset_11b = 85 { 4, { 2, 4, 11, 22 } }; 86 87 static const struct ieee80211_rateset iwi_rateset_11g = 88 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 89 90 static int iwi_match(struct device *, struct cfdata *, void *); 91 static void iwi_attach(struct device *, struct device *, void *); 92 static int iwi_detach(struct device *, int); 93 94 static void iwi_shutdown(void *); 95 static int iwi_suspend(struct iwi_softc *); 96 static int iwi_resume(struct iwi_softc *); 97 static void iwi_powerhook(int, void *); 98 99 static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *, 100 int); 101 static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 102 static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 103 static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *, 104 int); 105 static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 106 static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 107 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *, 108 int); 109 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 110 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 111 112 static int iwi_media_change(struct ifnet *); 113 static void iwi_media_status(struct ifnet *, struct ifmediareq *); 114 static u_int16_t iwi_read_prom_word(struct iwi_softc *, u_int8_t); 115 static int iwi_newstate(struct ieee80211com *, enum ieee80211_state, int); 116 static void iwi_fix_channel(struct ieee80211com *, struct mbuf *); 117 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int, 118 struct iwi_frame *); 119 static void iwi_notification_intr(struct iwi_softc *, struct iwi_rx_data *, 120 struct iwi_notif *); 121 static void iwi_rx_intr(struct iwi_softc *); 122 static void iwi_tx_intr(struct iwi_softc *); 123 static int iwi_intr(void *); 124 static int iwi_cmd(struct iwi_softc *, u_int8_t, void *, u_int8_t, int); 125 static int iwi_tx_start(struct ifnet *, struct mbuf *, struct ieee80211_node *); 126 static void iwi_start(struct ifnet *); 127 static void iwi_watchdog(struct ifnet *); 128 static int iwi_get_table0(struct iwi_softc *, u_int32_t *); 129 static int iwi_get_radio(struct iwi_softc *, int *); 130 static int iwi_ioctl(struct ifnet *, u_long, caddr_t); 131 static void iwi_stop_master(struct iwi_softc *); 132 static int iwi_reset(struct iwi_softc *); 133 static int iwi_load_ucode(struct iwi_softc *, void *, int); 134 static int iwi_load_firmware(struct iwi_softc *, void *, int); 135 static int iwi_cache_firmware(struct iwi_softc *, void *); 136 static void iwi_free_firmware(struct iwi_softc *); 137 static int iwi_config(struct iwi_softc *); 138 static int iwi_set_chan(struct iwi_softc *, struct ieee80211_channel *); 139 static int iwi_scan(struct iwi_softc *); 140 static int iwi_auth_and_assoc(struct iwi_softc *); 141 static int iwi_init(struct ifnet *); 142 static void iwi_stop(struct ifnet *, int); 143 144 static __inline u_int8_t 145 MEM_READ_1(struct iwi_softc *sc, u_int32_t addr) 146 { 147 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 148 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 149 } 150 151 static __inline u_int32_t 152 MEM_READ_4(struct iwi_softc *sc, u_int32_t addr) 153 { 154 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 155 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 156 } 157 158 #ifdef IWI_DEBUG 159 #define DPRINTF(x) if (iwi_debug > 0) printf x 160 #define DPRINTFN(n, x) if (iwi_debug >= (n)) printf x 161 int iwi_debug = 0; 162 #else 163 #define DPRINTF(x) 164 #define DPRINTFN(n, x) 165 #endif 166 167 CFATTACH_DECL(iwi, sizeof (struct iwi_softc), iwi_match, iwi_attach, 168 iwi_detach, NULL); 169 170 static int 171 iwi_match(struct device *parent, struct cfdata *match, void *aux) 172 { 173 struct pci_attach_args *pa = aux; 174 175 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 176 return 0; 177 178 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2200BG || 179 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2225BG || 180 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 181 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) 182 return 1; 183 184 return 0; 185 } 186 187 /* Base Address Register */ 188 #define IWI_PCI_BAR0 0x10 189 190 static void 191 iwi_attach(struct device *parent, struct device *self, void *aux) 192 { 193 struct iwi_softc *sc = (struct iwi_softc *)self; 194 struct ieee80211com *ic = &sc->sc_ic; 195 struct ifnet *ifp = &sc->sc_if; 196 struct pci_attach_args *pa = aux; 197 const char *intrstr; 198 char devinfo[256]; 199 bus_space_tag_t memt; 200 bus_space_handle_t memh; 201 bus_addr_t base; 202 pci_intr_handle_t ih; 203 pcireg_t data; 204 u_int16_t val; 205 int error, revision, i; 206 207 sc->sc_pct = pa->pa_pc; 208 sc->sc_pcitag = pa->pa_tag; 209 210 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 211 revision = PCI_REVISION(pa->pa_class); 212 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 213 214 /* clear device specific PCI configuration register 0x41 */ 215 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 216 data &= ~0x0000ff00; 217 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 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, IWI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 226 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, &base, &sc->sc_sz); 227 if (error != 0) { 228 aprint_error("%s: could not map memory space\n", 229 sc->sc_dev.dv_xname); 230 return; 231 } 232 233 sc->sc_st = memt; 234 sc->sc_sh = memh; 235 sc->sc_dmat = pa->pa_dmat; 236 237 /* disable interrupts */ 238 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 239 240 if (pci_intr_map(pa, &ih) != 0) { 241 aprint_error("%s: could not map interrupt\n", 242 sc->sc_dev.dv_xname); 243 return; 244 } 245 246 intrstr = pci_intr_string(sc->sc_pct, ih); 247 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, iwi_intr, sc); 248 if (sc->sc_ih == NULL) { 249 aprint_error("%s: could not establish interrupt", 250 sc->sc_dev.dv_xname); 251 if (intrstr != NULL) 252 aprint_error(" at %s", intrstr); 253 aprint_error("\n"); 254 return; 255 } 256 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 257 258 if (iwi_reset(sc) != 0) { 259 aprint_error("%s: could not reset adapter\n", 260 sc->sc_dev.dv_xname); 261 return; 262 } 263 264 /* 265 * Allocate rings. 266 */ 267 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) { 268 aprint_error("%s: could not allocate command ring\n", 269 sc->sc_dev.dv_xname); 270 goto fail; 271 } 272 273 if (iwi_alloc_tx_ring(sc, &sc->txq, IWI_TX_RING_COUNT) != 0) { 274 aprint_error("%s: could not allocate Tx ring\n", 275 sc->sc_dev.dv_xname); 276 goto fail; 277 } 278 279 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) { 280 aprint_error("%s: could not allocate Rx ring\n", 281 sc->sc_dev.dv_xname); 282 goto fail; 283 } 284 285 ic->ic_ifp = ifp; 286 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 287 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 288 ic->ic_state = IEEE80211_S_INIT; 289 290 /* set device capabilities */ 291 ic->ic_caps = IEEE80211_C_WPA | IEEE80211_C_PMGT | IEEE80211_C_TXPMGT | 292 IEEE80211_C_SHPREAMBLE | IEEE80211_C_MONITOR; 293 294 /* read MAC address from EEPROM */ 295 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 296 ic->ic_myaddr[0] = val >> 8; 297 ic->ic_myaddr[1] = val & 0xff; 298 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 299 ic->ic_myaddr[2] = val >> 8; 300 ic->ic_myaddr[3] = val & 0xff; 301 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 302 ic->ic_myaddr[4] = val >> 8; 303 ic->ic_myaddr[5] = val & 0xff; 304 305 aprint_normal("%s: 802.11 address %s\n", sc->sc_dev.dv_xname, 306 ether_sprintf(ic->ic_myaddr)); 307 308 309 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 310 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) { 311 /* set supported .11a rates (2915ABG only) */ 312 ic->ic_sup_rates[IEEE80211_MODE_11A] = iwi_rateset_11a; 313 314 /* set supported .11a channels */ 315 for (i = 36; i <= 64; i += 4) { 316 ic->ic_channels[i].ic_freq = 317 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 318 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 319 } 320 for (i = 149; i <= 165; i += 4) { 321 ic->ic_channels[i].ic_freq = 322 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 323 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 324 } 325 } 326 327 /* set supported .11b and .11g rates */ 328 ic->ic_sup_rates[IEEE80211_MODE_11B] = iwi_rateset_11b; 329 ic->ic_sup_rates[IEEE80211_MODE_11G] = iwi_rateset_11g; 330 331 /* set supported .11b and .11g channels (1 through 14) */ 332 for (i = 1; i <= 14; i++) { 333 ic->ic_channels[i].ic_freq = 334 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 335 ic->ic_channels[i].ic_flags = 336 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 337 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 338 } 339 340 ifp->if_softc = sc; 341 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 342 ifp->if_init = iwi_init; 343 ifp->if_stop = iwi_stop; 344 ifp->if_ioctl = iwi_ioctl; 345 ifp->if_start = iwi_start; 346 ifp->if_watchdog = iwi_watchdog; 347 IFQ_SET_READY(&ifp->if_snd); 348 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 349 350 if_attach(ifp); 351 ieee80211_ifattach(ic); 352 /* override state transition machine */ 353 sc->sc_newstate = ic->ic_newstate; 354 ic->ic_newstate = iwi_newstate; 355 ieee80211_media_init(ic, iwi_media_change, iwi_media_status); 356 357 #if NBPFILTER > 0 358 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 359 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf); 360 361 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 362 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 363 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT); 364 365 sc->sc_txtap_len = sizeof sc->sc_txtapu; 366 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 367 sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT); 368 #endif 369 370 /* 371 * Make sure the interface is shutdown during reboot. 372 */ 373 sc->sc_sdhook = shutdownhook_establish(iwi_shutdown, sc); 374 if (sc->sc_sdhook == NULL) 375 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 376 sc->sc_dev.dv_xname); 377 sc->sc_powerhook = powerhook_establish(iwi_powerhook, sc); 378 if (sc->sc_powerhook == NULL) 379 printf("%s: WARNING: unable to establish power hook\n", 380 sc->sc_dev.dv_xname); 381 382 ieee80211_announce(ic); 383 /* 384 * Add a few sysctl knobs. 385 * XXX: Not yet. 386 */ 387 sc->dwelltime = 100; 388 sc->bluetooth = 1; 389 sc->antenna = 0; 390 391 return; 392 393 fail: iwi_detach(self, 0); 394 } 395 396 static int 397 iwi_detach(struct device* self, int flags) 398 { 399 struct iwi_softc *sc = (struct iwi_softc *)self; 400 struct ifnet *ifp = &sc->sc_if; 401 402 iwi_stop(ifp, 1); 403 iwi_free_firmware(sc); 404 405 #if NBPFILTER > 0 406 bpfdetach(ifp); 407 #endif 408 ieee80211_ifdetach(&sc->sc_ic); 409 if_detach(ifp); 410 411 iwi_free_cmd_ring(sc, &sc->cmdq); 412 iwi_free_tx_ring(sc, &sc->txq); 413 iwi_free_rx_ring(sc, &sc->rxq); 414 415 if (sc->sc_ih != NULL) { 416 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 417 sc->sc_ih = NULL; 418 } 419 420 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 421 422 powerhook_disestablish(sc->sc_powerhook); 423 shutdownhook_disestablish(sc->sc_sdhook); 424 425 return 0; 426 } 427 428 static int 429 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, 430 int count) 431 { 432 int error, nsegs; 433 434 ring->count = count; 435 ring->queued = 0; 436 ring->cur = ring->next = 0; 437 438 /* 439 * Allocate and map command ring 440 */ 441 error = bus_dmamap_create(sc->sc_dmat, 442 sizeof (struct iwi_cmd_desc) * count, 1, 443 sizeof (struct iwi_cmd_desc) * count, 0, 444 BUS_DMA_NOWAIT, &ring->desc_map); 445 if (error != 0) { 446 aprint_error("%s: could not create command ring DMA map\n", 447 sc->sc_dev.dv_xname); 448 goto fail; 449 } 450 451 error = bus_dmamem_alloc(sc->sc_dmat, 452 sizeof (struct iwi_cmd_desc) * count, PAGE_SIZE, 0, 453 &sc->cmdq.desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 454 if (error != 0) { 455 aprint_error("%s: could not allocate command ring DMA memory\n", 456 sc->sc_dev.dv_xname); 457 goto fail; 458 } 459 460 error = bus_dmamem_map(sc->sc_dmat, &sc->cmdq.desc_seg, nsegs, 461 sizeof (struct iwi_cmd_desc) * count, 462 (caddr_t *)&sc->cmdq.desc, BUS_DMA_NOWAIT); 463 if (error != 0) { 464 aprint_error("%s: could not map command ring DMA memory\n", 465 sc->sc_dev.dv_xname); 466 goto fail; 467 } 468 469 error = bus_dmamap_load(sc->sc_dmat, sc->cmdq.desc_map, sc->cmdq.desc, 470 sizeof (struct iwi_cmd_desc) * count, NULL, 471 BUS_DMA_NOWAIT); 472 if (error != 0) { 473 aprint_error("%s: could not load command ring DMA map\n", 474 sc->sc_dev.dv_xname); 475 goto fail; 476 } 477 478 memset(sc->cmdq.desc, 0, 479 sizeof (struct iwi_cmd_desc) * count); 480 481 return 0; 482 483 fail: iwi_free_cmd_ring(sc, ring); 484 return error; 485 } 486 487 static void 488 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 489 { 490 ring->queued = 0; 491 ring->cur = ring->next = 0; 492 } 493 494 static void 495 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 496 { 497 if (ring->desc_map != NULL) { 498 if (ring->desc != NULL) { 499 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 500 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 501 sizeof (struct iwi_cmd_desc) * ring->count); 502 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 503 } 504 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 505 } 506 } 507 508 static int 509 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, 510 int count) 511 { 512 int i, error, nsegs; 513 514 ring->count = count; 515 ring->queued = 0; 516 ring->cur = ring->next = 0; 517 518 /* 519 * Allocate and map Tx ring 520 */ 521 error = bus_dmamap_create(sc->sc_dmat, 522 sizeof (struct iwi_tx_desc) * count, 1, 523 sizeof (struct iwi_tx_desc) * count, 0, BUS_DMA_NOWAIT, 524 &ring->desc_map); 525 if (error != 0) { 526 aprint_error("%s: could not create tx ring DMA map\n", 527 sc->sc_dev.dv_xname); 528 goto fail; 529 } 530 531 error = bus_dmamem_alloc(sc->sc_dmat, 532 sizeof (struct iwi_tx_desc) * count, PAGE_SIZE, 0, 533 &ring->desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 534 if (error != 0) { 535 aprint_error("%s: could not allocate tx ring DMA memory\n", 536 sc->sc_dev.dv_xname); 537 goto fail; 538 } 539 540 error = bus_dmamem_map(sc->sc_dmat, &ring->desc_seg, nsegs, 541 sizeof (struct iwi_tx_desc) * count, 542 (caddr_t *)&ring->desc, BUS_DMA_NOWAIT); 543 if (error != 0) { 544 aprint_error("%s: could not map tx ring DMA memory\n", 545 sc->sc_dev.dv_xname); 546 goto fail; 547 } 548 549 error = bus_dmamap_load(sc->sc_dmat, ring->desc_map, ring->desc, 550 sizeof (struct iwi_tx_desc) * count, NULL, 551 BUS_DMA_NOWAIT); 552 if (error != 0) { 553 aprint_error("%s: could not load tx ring DMA map\n", 554 sc->sc_dev.dv_xname); 555 goto fail; 556 } 557 558 memset(ring->desc, 0, sizeof (struct iwi_tx_desc) * count); 559 560 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 561 M_NOWAIT | M_ZERO); 562 if (ring->data == NULL) { 563 aprint_error("%s: could not allocate soft data\n", 564 sc->sc_dev.dv_xname); 565 error = ENOMEM; 566 goto fail; 567 } 568 569 /* 570 * Allocate Tx buffers DMA maps 571 */ 572 for (i = 0; i < count; i++) { 573 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, IWI_MAX_NSEG, 574 MCLBYTES, 0, BUS_DMA_NOWAIT, &ring->data[i].map); 575 if (error != 0) { 576 aprint_error("%s: could not create tx buf DMA map", 577 sc->sc_dev.dv_xname); 578 goto fail; 579 } 580 } 581 return 0; 582 583 fail: iwi_free_tx_ring(sc, ring); 584 return error; 585 } 586 587 static void 588 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 589 { 590 struct iwi_tx_data *data; 591 int i; 592 593 for (i = 0; i < ring->count; i++) { 594 data = &ring->data[i]; 595 596 if (data->m != NULL) { 597 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 598 MCLBYTES, BUS_DMASYNC_POSTWRITE); 599 bus_dmamap_unload(sc->sc_dmat, data->map); 600 m_freem(data->m); 601 data->m = NULL; 602 } 603 604 if (data->ni != NULL) { 605 ieee80211_free_node(data->ni); 606 data->ni = NULL; 607 } 608 } 609 610 ring->queued = 0; 611 ring->cur = ring->next = 0; 612 } 613 614 static void 615 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 616 { 617 int i; 618 619 if (ring->desc_map != NULL) { 620 if (ring->desc != NULL) { 621 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 622 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 623 sizeof (struct iwi_tx_desc) * ring->count); 624 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 625 } 626 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 627 } 628 629 for (i = 0; i < ring->count; i++) { 630 if (ring->data[i].m != NULL) { 631 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 632 m_freem(ring->data[i].m); 633 } 634 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 635 } 636 } 637 638 static int 639 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, 640 int count) 641 { 642 int i, error; 643 644 ring->count = count; 645 ring->cur = 0; 646 647 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 648 M_NOWAIT | M_ZERO); 649 if (ring->data == NULL) { 650 aprint_error("%s: could not allocate soft data\n", 651 sc->sc_dev.dv_xname); 652 error = ENOMEM; 653 goto fail; 654 } 655 656 /* 657 * Allocate and map Rx buffers 658 */ 659 for (i = 0; i < count; i++) { 660 661 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 662 0, BUS_DMA_NOWAIT, &ring->data[i].map); 663 if (error != 0) { 664 aprint_error("%s: could not create rx buf DMA map", 665 sc->sc_dev.dv_xname); 666 goto fail; 667 } 668 669 MGETHDR(ring->data[i].m, M_DONTWAIT, MT_DATA); 670 if (ring->data[i].m == NULL) { 671 aprint_error("%s: could not allocate rx mbuf\n", 672 sc->sc_dev.dv_xname); 673 error = ENOMEM; 674 goto fail; 675 } 676 677 MCLGET(ring->data[i].m, M_DONTWAIT); 678 if (!(ring->data[i].m->m_flags & M_EXT)) { 679 m_freem(ring->data[i].m); 680 aprint_error("%s: could not allocate rx mbuf cluster\n", 681 sc->sc_dev.dv_xname); 682 error = ENOMEM; 683 goto fail; 684 } 685 686 error = bus_dmamap_load(sc->sc_dmat, ring->data[i].map, 687 mtod(ring->data[i].m, void *), MCLBYTES, NULL, 688 BUS_DMA_NOWAIT); 689 if (error != 0) { 690 aprint_error("%s: could not load rx buffer DMA map\n", 691 sc->sc_dev.dv_xname); 692 goto fail; 693 } 694 } 695 696 return 0; 697 698 fail: iwi_free_rx_ring(sc, ring); 699 return error; 700 } 701 702 static void 703 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 704 { 705 ring->cur = 0; 706 } 707 708 static void 709 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 710 { 711 int i; 712 713 for (i = 0; i < ring->count; i++) { 714 if (ring->data[i].m != NULL) { 715 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 716 m_freem(ring->data[i].m); 717 } 718 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 719 } 720 } 721 722 static void 723 iwi_shutdown(void *arg) 724 { 725 struct iwi_softc *sc = (struct iwi_softc *)arg; 726 struct ifnet *ifp = sc->sc_ic.ic_ifp; 727 728 iwi_stop(ifp, 1); 729 } 730 731 static int 732 iwi_suspend(struct iwi_softc *sc) 733 { 734 struct ifnet *ifp = sc->sc_ic.ic_ifp; 735 736 iwi_stop(ifp, 1); 737 738 return 0; 739 } 740 741 static int 742 iwi_resume(struct iwi_softc *sc) 743 { 744 struct ifnet *ifp = sc->sc_ic.ic_ifp; 745 pcireg_t data; 746 747 /* clear device specific PCI configuration register 0x41 */ 748 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 749 data &= ~0x0000ff00; 750 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 751 752 if (ifp->if_flags & IFF_UP) { 753 iwi_init(ifp); 754 if (ifp->if_flags & IFF_RUNNING) 755 iwi_start(ifp); 756 } 757 758 return 0; 759 } 760 761 static void 762 iwi_powerhook(int why, void *arg) 763 { 764 struct iwi_softc *sc = arg; 765 int s; 766 767 s = splnet(); 768 switch (why) { 769 case PWR_SUSPEND: 770 case PWR_STANDBY: 771 iwi_suspend(sc); 772 break; 773 case PWR_RESUME: 774 iwi_resume(sc); 775 break; 776 case PWR_SOFTSUSPEND: 777 case PWR_SOFTSTANDBY: 778 case PWR_SOFTRESUME: 779 break; 780 } 781 splx(s); 782 } 783 784 static int 785 iwi_media_change(struct ifnet *ifp) 786 { 787 int error; 788 789 error = ieee80211_media_change(ifp); 790 if (error != ENETRESET) 791 return error; 792 793 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 794 iwi_init(ifp); 795 796 return 0; 797 } 798 799 static void 800 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 801 { 802 struct iwi_softc *sc = ifp->if_softc; 803 struct ieee80211com *ic = &sc->sc_ic; 804 #define N(a) (sizeof (a) / sizeof (a[0])) 805 static const struct { 806 u_int32_t val; 807 int rate; 808 } rates[] = { 809 { IWI_RATE_DS1, 2 }, 810 { IWI_RATE_DS2, 4 }, 811 { IWI_RATE_DS5, 11 }, 812 { IWI_RATE_DS11, 22 }, 813 { IWI_RATE_OFDM6, 12 }, 814 { IWI_RATE_OFDM9, 18 }, 815 { IWI_RATE_OFDM12, 24 }, 816 { IWI_RATE_OFDM18, 36 }, 817 { IWI_RATE_OFDM24, 48 }, 818 { IWI_RATE_OFDM36, 72 }, 819 { IWI_RATE_OFDM48, 96 }, 820 { IWI_RATE_OFDM54, 108 }, 821 }; 822 u_int32_t val; 823 int rate, i; 824 825 imr->ifm_status = IFM_AVALID; 826 imr->ifm_active = IFM_IEEE80211; 827 if (ic->ic_state == IEEE80211_S_RUN) 828 imr->ifm_status |= IFM_ACTIVE; 829 830 /* read current transmission rate from adapter */ 831 val = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 832 833 /* convert rate to 802.11 rate */ 834 for (i = 0; i < N(rates) && rates[i].val != val; i++); 835 rate = (i < N(rates)) ? rates[i].rate : 0; 836 837 imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode); 838 switch (ic->ic_opmode) { 839 case IEEE80211_M_STA: 840 break; 841 842 case IEEE80211_M_IBSS: 843 imr->ifm_active |= IFM_IEEE80211_ADHOC; 844 break; 845 846 case IEEE80211_M_MONITOR: 847 imr->ifm_active |= IFM_IEEE80211_MONITOR; 848 break; 849 850 case IEEE80211_M_AHDEMO: 851 case IEEE80211_M_HOSTAP: 852 /* should not get there */ 853 break; 854 } 855 #undef N 856 } 857 858 static int 859 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 860 { 861 struct iwi_softc *sc = ic->ic_ifp->if_softc; 862 863 switch (nstate) { 864 case IEEE80211_S_SCAN: 865 if (sc->flags & IWI_FLAG_SCANNING) 866 break; 867 868 ieee80211_node_table_reset(&ic->ic_scan); 869 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 870 sc->flags |= IWI_FLAG_SCANNING; 871 iwi_scan(sc); 872 break; 873 874 case IEEE80211_S_AUTH: 875 iwi_auth_and_assoc(sc); 876 break; 877 878 case IEEE80211_S_RUN: 879 if (ic->ic_opmode == IEEE80211_M_IBSS) 880 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1); 881 else if (ic->ic_opmode == IEEE80211_M_MONITOR) 882 iwi_set_chan(sc, ic->ic_ibss_chan); 883 884 return (*sc->sc_newstate)(ic, nstate, 885 IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 886 887 case IEEE80211_S_ASSOC: 888 break; 889 890 case IEEE80211_S_INIT: 891 sc->flags &= ~IWI_FLAG_SCANNING; 892 break; 893 } 894 895 ic->ic_state = nstate; 896 return 0; 897 } 898 899 /* 900 * Read 16 bits at address 'addr' from the serial EEPROM. 901 * DON'T PLAY WITH THIS CODE UNLESS YOU KNOW *EXACTLY* WHAT YOU'RE DOING! 902 */ 903 static u_int16_t 904 iwi_read_prom_word(struct iwi_softc *sc, u_int8_t addr) 905 { 906 u_int32_t tmp; 907 u_int16_t val; 908 int n; 909 910 /* Clock C once before the first command */ 911 IWI_EEPROM_CTL(sc, 0); 912 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 913 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 914 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 915 916 /* Write start bit (1) */ 917 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 918 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 919 920 /* Write READ opcode (10) */ 921 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 922 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 923 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 924 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 925 926 /* Write address A7-A0 */ 927 for (n = 7; n >= 0; n--) { 928 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 929 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 930 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 931 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 932 } 933 934 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 935 936 /* Read data Q15-Q0 */ 937 val = 0; 938 for (n = 15; n >= 0; n--) { 939 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 940 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 941 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 942 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 943 } 944 945 IWI_EEPROM_CTL(sc, 0); 946 947 /* Clear Chip Select and clock C */ 948 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 949 IWI_EEPROM_CTL(sc, 0); 950 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 951 952 return be16toh(val); 953 } 954 955 /* 956 * XXX: Hack to set the current channel to the value advertised in beacons or 957 * probe responses. Only used during AP detection. 958 */ 959 static void 960 iwi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 961 { 962 struct ieee80211_frame *wh; 963 u_int8_t subtype; 964 u_int8_t *frm, *efrm; 965 966 wh = mtod(m, struct ieee80211_frame *); 967 968 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 969 return; 970 971 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 972 973 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 974 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 975 return; 976 977 frm = (u_int8_t *)(wh + 1); 978 efrm = mtod(m, u_int8_t *) + m->m_len; 979 980 frm += 12; /* skip tstamp, bintval and capinfo fields */ 981 while (frm < efrm) { 982 if (*frm == IEEE80211_ELEMID_DSPARMS) 983 #if IEEE80211_CHAN_MAX < 255 984 if (frm[2] <= IEEE80211_CHAN_MAX) 985 #endif 986 ic->ic_bss->ni_chan = &ic->ic_channels[frm[2]]; 987 988 frm += frm[1] + 2; 989 } 990 } 991 992 static void 993 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 994 struct iwi_frame *frame) 995 { 996 struct ieee80211com *ic = &sc->sc_ic; 997 struct ifnet *ifp = ic->ic_ifp; 998 struct mbuf *m; 999 struct ieee80211_frame *wh; 1000 struct ieee80211_node *ni; 1001 int error; 1002 1003 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u\n", 1004 le16toh(frame->len), frame->chan, frame->rssi_dbm)); 1005 1006 bus_dmamap_sync(sc->sc_dmat, data->map, sizeof (struct iwi_hdr), 1007 sizeof (struct iwi_frame) + le16toh(frame->len), 1008 BUS_DMASYNC_POSTREAD); 1009 1010 if (le16toh(frame->len) < sizeof (struct ieee80211_frame) || 1011 le16toh(frame->len) > MCLBYTES) { 1012 DPRINTF(("%s: bad frame length\n", sc->sc_dev.dv_xname)); 1013 ifp->if_ierrors++; 1014 return; 1015 } 1016 1017 bus_dmamap_unload(sc->sc_dmat, data->map); 1018 1019 /* Finalize mbuf */ 1020 m = data->m; 1021 m->m_pkthdr.rcvif = ifp; 1022 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1023 sizeof (struct iwi_frame) + le16toh(frame->len); 1024 1025 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1026 1027 if (ic->ic_state == IEEE80211_S_SCAN) 1028 iwi_fix_channel(ic, m); 1029 1030 #if NBPFILTER > 0 1031 if (sc->sc_drvbpf != NULL) { 1032 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1033 1034 tap->wr_flags = 0; 1035 tap->wr_rate = frame->rate; 1036 tap->wr_chan_freq = 1037 htole16(ic->ic_channels[frame->chan].ic_freq); 1038 tap->wr_chan_flags = 1039 htole16(ic->ic_channels[frame->chan].ic_flags); 1040 tap->wr_antsignal = frame->signal; 1041 tap->wr_antenna = frame->antenna; 1042 1043 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m); 1044 } 1045 #endif 1046 1047 wh = mtod(m, struct ieee80211_frame *); 1048 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1049 1050 /* Send the frame to the upper layer */ 1051 ieee80211_input(ic, m, ni, frame->rssi_dbm, 0); 1052 1053 /* node is no longer needed */ 1054 ieee80211_free_node(ni); 1055 1056 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 1057 if (data->m == NULL) { 1058 aprint_error("%s: could not allocate rx mbuf\n", 1059 sc->sc_dev.dv_xname); 1060 return; 1061 } 1062 1063 MCLGET(data->m, M_DONTWAIT); 1064 if (!(data->m->m_flags & M_EXT)) { 1065 aprint_error("%s: could not allocate rx mbuf cluster\n", 1066 sc->sc_dev.dv_xname); 1067 m_freem(data->m); 1068 data->m = NULL; 1069 return; 1070 } 1071 1072 error = bus_dmamap_load(sc->sc_dmat, data->map, mtod(data->m, void *), 1073 MCLBYTES, NULL, BUS_DMA_NOWAIT); 1074 if (error != 0) { 1075 aprint_error("%s: could not load rx buf DMA map\n", 1076 sc->sc_dev.dv_xname); 1077 m_freem(data->m); 1078 data->m = NULL; 1079 return; 1080 } 1081 1082 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, data->map->dm_segs[0].ds_addr); 1083 } 1084 1085 static void 1086 iwi_notification_intr(struct iwi_softc *sc, struct iwi_rx_data *buf, 1087 struct iwi_notif *notif) 1088 { 1089 struct ieee80211com *ic = &sc->sc_ic; 1090 struct iwi_notif_scan_channel *chan; 1091 struct iwi_notif_scan_complete *scan; 1092 struct iwi_notif_authentication *auth; 1093 struct iwi_notif_association *assoc; 1094 1095 bus_dmamap_sync(sc->sc_dmat, buf->map, sizeof (struct iwi_hdr), 1096 sizeof (struct iwi_notif) + le16toh(notif->len), 1097 BUS_DMASYNC_POSTREAD); 1098 1099 switch (notif->type) { 1100 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1101 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1102 1103 DPRINTFN(2, ("Scanning channel (%u)\n", chan->nchan)); 1104 break; 1105 1106 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1107 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1108 1109 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1110 scan->status)); 1111 1112 /* monitor mode uses scan to set the channel ... */ 1113 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1114 sc->flags &= ~IWI_FLAG_SCANNING; 1115 ieee80211_end_scan(ic); 1116 } else 1117 iwi_set_chan(sc, ic->ic_ibss_chan); 1118 break; 1119 1120 case IWI_NOTIF_TYPE_AUTHENTICATION: 1121 auth = (struct iwi_notif_authentication *)(notif + 1); 1122 1123 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 1124 1125 switch (auth->state) { 1126 case IWI_AUTHENTICATED: 1127 ieee80211_node_authorize(ic, ic->ic_bss); 1128 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1129 break; 1130 1131 case IWI_DEAUTHENTICATED: 1132 break; 1133 1134 default: 1135 aprint_error("%s: unknown authentication state %u\n", 1136 sc->sc_dev.dv_xname, auth->state); 1137 } 1138 break; 1139 1140 case IWI_NOTIF_TYPE_ASSOCIATION: 1141 assoc = (struct iwi_notif_association *)(notif + 1); 1142 1143 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 1144 assoc->status)); 1145 1146 switch (assoc->state) { 1147 case IWI_AUTHENTICATED: 1148 /* re-association, do nothing */ 1149 break; 1150 1151 case IWI_ASSOCIATED: 1152 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1153 break; 1154 1155 case IWI_DEASSOCIATED: 1156 ieee80211_begin_scan(ic, 1); 1157 break; 1158 1159 default: 1160 aprint_error("%s: unknown association state %u\n", 1161 sc->sc_dev.dv_xname, assoc->state); 1162 } 1163 break; 1164 1165 case IWI_NOTIF_TYPE_CALIBRATION: 1166 case IWI_NOTIF_TYPE_BEACON: 1167 case IWI_NOTIF_TYPE_NOISE: 1168 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1169 break; 1170 1171 default: 1172 aprint_error("%s: unknown notification type %u\n", 1173 sc->sc_dev.dv_xname, notif->type); 1174 } 1175 } 1176 1177 static void 1178 iwi_rx_intr(struct iwi_softc *sc) 1179 { 1180 struct iwi_rx_data *data; 1181 struct iwi_hdr *hdr; 1182 uint32_t hw; 1183 1184 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1185 1186 for (; sc->rxq.cur != hw;) { 1187 data = &sc->rxq.data[sc->rxq.cur]; 1188 1189 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1190 sizeof (struct iwi_hdr), BUS_DMASYNC_POSTREAD); 1191 1192 hdr = mtod(data->m, struct iwi_hdr *); 1193 1194 switch (hdr->type) { 1195 case IWI_HDR_TYPE_FRAME: 1196 iwi_frame_intr(sc, data, sc->rxq.cur, 1197 (struct iwi_frame *)(hdr + 1)); 1198 break; 1199 1200 case IWI_HDR_TYPE_NOTIF: 1201 iwi_notification_intr(sc, data, 1202 (struct iwi_notif *)(hdr + 1)); 1203 break; 1204 1205 default: 1206 aprint_error("%s: unknown hdr type %u\n", 1207 sc->sc_dev.dv_xname, hdr->type); 1208 } 1209 1210 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1211 1212 sc->rxq.cur = (sc->rxq.cur + 1) % sc->rxq.count; 1213 } 1214 1215 1216 /* Tell the firmware what we have processed */ 1217 hw = (hw == 0) ? sc->rxq.count - 1 : hw - 1; 1218 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1219 } 1220 1221 static void 1222 iwi_tx_intr(struct iwi_softc *sc) 1223 { 1224 struct ifnet *ifp = &sc->sc_if; 1225 struct iwi_tx_data *data; 1226 u_int32_t hw; 1227 1228 hw = CSR_READ_4(sc, IWI_CSR_TX1_RIDX); 1229 1230 for (; sc->txq.next != hw;) { 1231 data = &sc->txq.data[sc->txq.next]; 1232 1233 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1234 MCLBYTES, BUS_DMASYNC_POSTWRITE); 1235 bus_dmamap_unload(sc->sc_dmat, data->map); 1236 m_freem(data->m); 1237 data->m = NULL; 1238 ieee80211_free_node(data->ni); 1239 data->ni = NULL; 1240 1241 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next)); 1242 1243 ifp->if_opackets++; 1244 1245 sc->txq.queued--; 1246 sc->txq.next = (sc->txq.next + 1) % sc->txq.count; 1247 } 1248 1249 sc->sc_tx_timer = 0; 1250 ifp->if_flags &= ~IFF_OACTIVE; 1251 1252 /* Call start() since some buffer descriptors have been released */ 1253 (*ifp->if_start)(ifp); 1254 } 1255 1256 static int 1257 iwi_intr(void *arg) 1258 { 1259 struct iwi_softc *sc = arg; 1260 u_int32_t r; 1261 1262 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1263 return 0; 1264 1265 /* Disable interrupts */ 1266 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1267 1268 if (r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)) { 1269 aprint_error("%s: fatal error\n", sc->sc_dev.dv_xname); 1270 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1271 iwi_stop(&sc->sc_if, 1); 1272 } 1273 1274 if (r & IWI_INTR_FW_INITED) { 1275 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1276 wakeup(sc); 1277 } 1278 1279 if (r & IWI_INTR_RADIO_OFF) { 1280 DPRINTF(("radio transmitter off\n")); 1281 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1282 iwi_stop(&sc->sc_if, 1); 1283 } 1284 1285 if (r & IWI_INTR_RX_DONE) 1286 iwi_rx_intr(sc); 1287 1288 if (r & IWI_INTR_CMD_DONE) 1289 wakeup(sc); 1290 1291 if (r & IWI_INTR_TX1_DONE) 1292 iwi_tx_intr(sc); 1293 1294 /* Acknowledge interrupts */ 1295 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1296 1297 /* Re-enable interrupts */ 1298 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1299 1300 return 1; 1301 } 1302 1303 static int 1304 iwi_cmd(struct iwi_softc *sc, u_int8_t type, void *data, u_int8_t len, 1305 int async) 1306 { 1307 struct iwi_cmd_desc *desc; 1308 1309 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1310 1311 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1312 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1313 desc->type = type; 1314 desc->len = len; 1315 memcpy(desc->data, data, len); 1316 1317 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 1318 sc->cmdq.cur * sizeof (struct iwi_cmd_desc), 1319 sizeof (struct iwi_cmd_desc), BUS_DMASYNC_PREWRITE); 1320 1321 DPRINTFN(2, ("sending command type=%u len=%u\n", 1322 type, len)); 1323 1324 sc->cmdq.cur = (sc->cmdq.cur + 1) % sc->cmdq.count; 1325 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1326 1327 return async ? 0 : tsleep(sc, 0, "iwicmd", hz); 1328 } 1329 1330 static int 1331 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1332 { 1333 struct iwi_softc *sc = ifp->if_softc; 1334 struct ieee80211com *ic = &sc->sc_ic; 1335 struct ieee80211_frame wh; 1336 struct ieee80211_key *k; 1337 struct iwi_tx_data *data; 1338 struct iwi_tx_desc *desc; 1339 struct mbuf *mnew; 1340 int error, i; 1341 1342 (void)memcpy(&wh, mtod(m0, struct ieee80211_frame *), sizeof(wh)); 1343 if (wh.i_fc[1] & IEEE80211_FC1_WEP) { 1344 k = ieee80211_crypto_encap(ic, ni, m0); 1345 if (k == NULL) { 1346 m_freem(m0); 1347 return ENOBUFS; 1348 } 1349 } 1350 1351 #if NBPFILTER > 0 1352 if (sc->sc_drvbpf != NULL) { 1353 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1354 1355 tap->wt_flags = 0; 1356 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1357 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1358 1359 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1360 } 1361 #endif 1362 1363 data = &sc->txq.data[sc->txq.cur]; 1364 desc = &sc->txq.desc[sc->txq.cur]; 1365 1366 /* trim IEEE802.11 header */ 1367 m_adj(m0, sizeof (struct ieee80211_frame)); 1368 1369 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, BUS_DMA_NOWAIT); 1370 if (error != 0 && error != EFBIG) { 1371 aprint_error("%s: could not map mbuf (error %d)\n", 1372 sc->sc_dev.dv_xname, error); 1373 m_freem(m0); 1374 return error; 1375 } 1376 if (error != 0) { 1377 /* too many fragments, linearize */ 1378 1379 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1380 if (mnew == NULL) { 1381 m_freem(m0); 1382 return ENOMEM; 1383 } 1384 1385 M_COPY_PKTHDR(mnew, m0); 1386 MCLGET(mnew, M_DONTWAIT); 1387 if (!(mnew->m_flags & M_EXT)) { 1388 m_freem(m0); 1389 m_freem(mnew); 1390 return ENOMEM; 1391 } 1392 1393 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, caddr_t)); 1394 m_freem(m0); 1395 mnew->m_len = mnew->m_pkthdr.len; 1396 m0 = mnew; 1397 1398 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1399 BUS_DMA_NOWAIT); 1400 if (error != 0) { 1401 aprint_error("%s: could not map mbuf (error %d)\n", 1402 sc->sc_dev.dv_xname, error); 1403 m_freem(m0); 1404 return error; 1405 } 1406 } 1407 1408 data->m = m0; 1409 data->ni = ni; 1410 1411 desc->hdr.type = IWI_HDR_TYPE_DATA; 1412 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1413 desc->cmd = IWI_DATA_CMD_TX; 1414 desc->len = htole16(m0->m_pkthdr.len); 1415 (void)memcpy(&desc->wh, &wh, sizeof (struct ieee80211_frame)); 1416 desc->flags = 0; 1417 if (!IEEE80211_IS_MULTICAST(wh.i_addr1)) 1418 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1419 1420 #if 0 1421 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 1422 wh.i_fc[1] |= IEEE80211_FC1_WEP; 1423 desc->wep_txkey = ic->ic_crypto.cs_def_txkey; 1424 } else 1425 #endif 1426 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1427 1428 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1429 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1430 1431 desc->nseg = htole32(data->map->dm_nsegs); 1432 for (i = 0; i < data->map->dm_nsegs; i++) { 1433 desc->seg_addr[i] = htole32(data->map->dm_segs[i].ds_addr); 1434 desc->seg_len[i] = htole32(data->map->dm_segs[i].ds_len); 1435 } 1436 1437 bus_dmamap_sync(sc->sc_dmat, sc->txq.desc_map, 1438 sc->txq.cur * sizeof (struct iwi_tx_desc), 1439 sizeof (struct iwi_tx_desc), BUS_DMASYNC_PREWRITE); 1440 1441 bus_dmamap_sync(sc->sc_dmat, data->map, 0, MCLBYTES, 1442 BUS_DMASYNC_PREWRITE); 1443 1444 DPRINTFN(5, ("sending data frame len=%u nseg=%u\n", 1445 desc->len, desc->nseg)); 1446 1447 /* Inform firmware about this new packet */ 1448 sc->txq.queued++; 1449 sc->txq.cur = (sc->txq.cur + 1) % sc->txq.count; 1450 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq.cur); 1451 1452 return 0; 1453 } 1454 1455 static void 1456 iwi_start(struct ifnet *ifp) 1457 { 1458 struct iwi_softc *sc = ifp->if_softc; 1459 struct ieee80211com *ic = &sc->sc_ic; 1460 struct mbuf *m0; 1461 struct ether_header *eh; 1462 struct ieee80211_node *ni; 1463 1464 if (ic->ic_state != IEEE80211_S_RUN) 1465 return; 1466 1467 for (;;) { 1468 IF_DEQUEUE(&ifp->if_snd, m0); 1469 if (m0 == NULL) 1470 break; 1471 1472 if (sc->txq.queued >= sc->txq.count - 4) { 1473 IF_PREPEND(&ifp->if_snd, m0); 1474 ifp->if_flags |= IFF_OACTIVE; 1475 break; 1476 } 1477 1478 if (m0->m_len < sizeof (struct ether_header) && 1479 (m0 = m_pullup(m0, sizeof (struct ether_header))) == NULL) 1480 continue; 1481 1482 #if NBPFILTER > 0 1483 if (ifp->if_bpf != NULL) 1484 bpf_mtap(ifp->if_bpf, m0); 1485 #endif 1486 1487 eh = mtod(m0, struct ether_header *); 1488 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1489 if (ni == NULL) { 1490 m_freem(m0); 1491 continue; 1492 } 1493 1494 #if NBPFILTER > 0 1495 if (ic->ic_rawbpf != NULL) 1496 bpf_mtap(ic->ic_rawbpf, m0); 1497 #endif 1498 m0 = ieee80211_encap(ic, m0, ni); 1499 if (m0 == NULL) { 1500 ieee80211_free_node(ni); 1501 continue; 1502 } 1503 1504 if (iwi_tx_start(ifp, m0, ni) != 0) { 1505 ieee80211_free_node(ni); 1506 ifp->if_oerrors++; 1507 break; 1508 } 1509 1510 /* start watchdog timer */ 1511 sc->sc_tx_timer = 5; 1512 ifp->if_timer = 1; 1513 } 1514 } 1515 1516 static void 1517 iwi_watchdog(struct ifnet *ifp) 1518 { 1519 struct iwi_softc *sc = ifp->if_softc; 1520 1521 ifp->if_timer = 0; 1522 1523 if (sc->sc_tx_timer > 0) { 1524 if (--sc->sc_tx_timer == 0) { 1525 aprint_error("%s: device timeout\n", 1526 sc->sc_dev.dv_xname); 1527 ifp->if_oerrors++; 1528 ifp->if_flags &= ~IFF_UP; 1529 iwi_stop(ifp, 1); 1530 return; 1531 } 1532 ifp->if_timer = 1; 1533 } 1534 1535 ieee80211_watchdog(&sc->sc_ic); 1536 } 1537 1538 static int 1539 iwi_get_table0(struct iwi_softc *sc, u_int32_t *tbl) 1540 { 1541 u_int32_t size, buf[128]; 1542 1543 if (!(sc->flags & IWI_FLAG_FW_INITED)) { 1544 memset(buf, 0, sizeof buf); 1545 return copyout(buf, tbl, sizeof buf); 1546 } 1547 1548 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 1549 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 1550 1551 return copyout(buf, tbl, sizeof buf); 1552 } 1553 1554 static int 1555 iwi_get_radio(struct iwi_softc *sc, int *ret) 1556 { 1557 int val; 1558 1559 val = (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1 : 0; 1560 return copyout(&val, ret, sizeof val); 1561 } 1562 1563 static int 1564 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1565 { 1566 struct iwi_softc *sc = ifp->if_softc; 1567 struct ifreq *ifr; 1568 int s, error = 0; 1569 1570 s = splnet(); 1571 1572 switch (cmd) { 1573 case SIOCSIFFLAGS: 1574 if (ifp->if_flags & IFF_UP) { 1575 if (!(ifp->if_flags & IFF_RUNNING)) 1576 iwi_init(ifp); 1577 } else { 1578 if (ifp->if_flags & IFF_RUNNING) 1579 iwi_stop(ifp, 1); 1580 } 1581 break; 1582 1583 case SIOCGTABLE0: 1584 ifr = (struct ifreq *)data; 1585 error = iwi_get_table0(sc, (u_int32_t *)ifr->ifr_data); 1586 break; 1587 1588 case SIOCGRADIO: 1589 ifr = (struct ifreq *)data; 1590 error = iwi_get_radio(sc, (int *)ifr->ifr_data); 1591 break; 1592 1593 case SIOCSLOADFW: 1594 /* only super-user can do that! */ 1595 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1596 break; 1597 1598 ifr = (struct ifreq *)data; 1599 error = iwi_cache_firmware(sc, ifr->ifr_data); 1600 break; 1601 1602 case SIOCSKILLFW: 1603 /* only super-user can do that! */ 1604 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1605 break; 1606 1607 ifp->if_flags &= ~IFF_UP; 1608 iwi_stop(ifp, 1); 1609 iwi_free_firmware(sc); 1610 break; 1611 1612 default: 1613 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 1614 } 1615 1616 if (error == ENETRESET && cmd != SIOCADDMULTI) { 1617 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1618 (IFF_UP | IFF_RUNNING)) 1619 iwi_init(ifp); 1620 error = 0; 1621 } 1622 1623 splx(s); 1624 return error; 1625 } 1626 1627 static void 1628 iwi_stop_master(struct iwi_softc *sc) 1629 { 1630 int ntries; 1631 1632 /* Disable interrupts */ 1633 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1634 1635 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1636 for (ntries = 0; ntries < 5; ntries++) { 1637 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1638 break; 1639 DELAY(10); 1640 } 1641 if (ntries == 5) 1642 aprint_error("%s: timeout waiting for master\n", 1643 sc->sc_dev.dv_xname); 1644 1645 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1646 IWI_RST_PRINCETON_RESET); 1647 1648 sc->flags &= ~IWI_FLAG_FW_INITED; 1649 } 1650 1651 static int 1652 iwi_reset(struct iwi_softc *sc) 1653 { 1654 int i, ntries; 1655 1656 iwi_stop_master(sc); 1657 1658 /* Move adapter to D0 state */ 1659 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1660 IWI_CTL_INIT); 1661 1662 /* Initialize Phase-Locked Level (PLL) */ 1663 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1664 1665 /* Wait for clock stabilization */ 1666 for (ntries = 0; ntries < 1000; ntries++) { 1667 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1668 break; 1669 DELAY(200); 1670 } 1671 if (ntries == 1000) 1672 return EIO; 1673 1674 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1675 IWI_RST_SW_RESET); 1676 1677 DELAY(10); 1678 1679 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1680 IWI_CTL_INIT); 1681 1682 /* Clear NIC memory */ 1683 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1684 for (i = 0; i < 0xc000; i++) 1685 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1686 1687 return 0; 1688 } 1689 1690 static int 1691 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size) 1692 { 1693 u_int16_t *w; 1694 int ntries, i; 1695 1696 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1697 IWI_RST_STOP_MASTER); 1698 for (ntries = 0; ntries < 5; ntries++) { 1699 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1700 break; 1701 DELAY(10); 1702 } 1703 if (ntries == 5) { 1704 aprint_error("%s: timeout waiting for master\n", 1705 sc->sc_dev.dv_xname); 1706 return EIO; 1707 } 1708 1709 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1710 DELAY(5000); 1711 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1712 ~IWI_RST_PRINCETON_RESET); 1713 DELAY(5000); 1714 MEM_WRITE_4(sc, 0x3000e0, 0); 1715 DELAY(1000); 1716 MEM_WRITE_4(sc, 0x300004, 1); 1717 DELAY(1000); 1718 MEM_WRITE_4(sc, 0x300004, 0); 1719 DELAY(1000); 1720 MEM_WRITE_1(sc, 0x200000, 0x00); 1721 MEM_WRITE_1(sc, 0x200000, 0x40); 1722 DELAY(1000); 1723 1724 /* Adapter is buggy, we must set the address for each word */ 1725 for (w = uc; size > 0; w++, size -= 2) 1726 MEM_WRITE_2(sc, 0x200010, *w); 1727 1728 MEM_WRITE_1(sc, 0x200000, 0x00); 1729 MEM_WRITE_1(sc, 0x200000, 0x80); 1730 1731 /* Wait until we get a response in the uc queue */ 1732 for (ntries = 0; ntries < 100; ntries++) { 1733 if (MEM_READ_1(sc, 0x200000) & 1) 1734 break; 1735 DELAY(100); 1736 } 1737 if (ntries == 100) { 1738 aprint_error("%s: timeout waiting for ucode to initialize\n", 1739 sc->sc_dev.dv_xname); 1740 return EIO; 1741 } 1742 1743 /* Empty the uc queue or the firmware will not initialize properly */ 1744 for (i = 0; i < 7; i++) 1745 MEM_READ_4(sc, 0x200004); 1746 1747 MEM_WRITE_1(sc, 0x200000, 0x00); 1748 1749 return 0; 1750 } 1751 1752 /* macro to handle unaligned little endian data in firmware image */ 1753 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1754 static int 1755 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size) 1756 { 1757 bus_dmamap_t map; 1758 bus_dma_segment_t seg; 1759 caddr_t virtaddr; 1760 u_char *p, *end; 1761 u_int32_t sentinel, ctl, src, dst, sum, len, mlen; 1762 int ntries, nsegs, error; 1763 1764 /* Allocate DMA memory for storing firmware image */ 1765 error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, 1766 BUS_DMA_NOWAIT, &map); 1767 if (error != 0) { 1768 aprint_error("%s: could not create firmware DMA map\n", 1769 sc->sc_dev.dv_xname); 1770 goto fail1; 1771 } 1772 1773 /* 1774 * We cannot map fw directly because of some hardware constraints on 1775 * the mapping address. 1776 */ 1777 error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 1778 &nsegs, BUS_DMA_NOWAIT); 1779 if (error != 0) { 1780 aprint_error("%s: could not allocate firmware DMA memory\n", 1781 sc->sc_dev.dv_xname); 1782 goto fail2; 1783 } 1784 1785 error = bus_dmamem_map(sc->sc_dmat, &seg, nsegs, size, &virtaddr, 1786 BUS_DMA_NOWAIT); 1787 if (error != 0) { 1788 aprint_error("%s: could not load firmware DMA map\n", 1789 sc->sc_dev.dv_xname); 1790 goto fail3; 1791 } 1792 1793 error = bus_dmamap_load(sc->sc_dmat, map, virtaddr, size, NULL, 1794 BUS_DMA_NOWAIT); 1795 if (error != 0) { 1796 aprint_error("%s: could not load fw dma map\n", 1797 sc->sc_dev.dv_xname); 1798 goto fail4; 1799 } 1800 1801 /* Copy firmware image to DMA memory */ 1802 memcpy(virtaddr, fw, size); 1803 1804 /* Make sure the adapter will get up-to-date values */ 1805 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 1806 1807 /* Tell the adapter where the command blocks are stored */ 1808 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 1809 1810 /* 1811 * Store command blocks into adapter's internal memory using register 1812 * indirections. The adapter will read the firmware image through DMA 1813 * using information stored in command blocks. 1814 */ 1815 src = map->dm_segs[0].ds_addr; 1816 p = virtaddr; 1817 end = p + size; 1818 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 1819 1820 while (p < end) { 1821 dst = GETLE32(p); p += 4; src += 4; 1822 len = GETLE32(p); p += 4; src += 4; 1823 p += len; 1824 1825 while (len > 0) { 1826 mlen = min(len, IWI_CB_MAXDATALEN); 1827 1828 ctl = IWI_CB_DEFAULT_CTL | mlen; 1829 sum = ctl ^ src ^ dst; 1830 1831 /* Write a command block */ 1832 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 1833 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 1834 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 1835 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 1836 1837 src += mlen; 1838 dst += mlen; 1839 len -= mlen; 1840 } 1841 } 1842 1843 /* Write a fictive final command block (sentinel) */ 1844 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 1845 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1846 1847 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1848 ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER)); 1849 1850 /* Tell the adapter to start processing command blocks */ 1851 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 1852 1853 /* Wait until the adapter has processed all command blocks */ 1854 for (ntries = 0; ntries < 400; ntries++) { 1855 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 1856 break; 1857 DELAY(100); 1858 } 1859 if (ntries == 400) { 1860 aprint_error("%s: timeout processing cb\n", 1861 sc->sc_dev.dv_xname); 1862 error = EIO; 1863 goto fail5; 1864 } 1865 1866 /* We're done with command blocks processing */ 1867 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 1868 1869 /* Allow interrupts so we know when the firmware is inited */ 1870 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1871 1872 /* Tell the adapter to initialize the firmware */ 1873 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 1874 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1875 IWI_CTL_ALLOW_STANDBY); 1876 1877 /* Wait at most one second for firmware initialization to complete */ 1878 if ((error = tsleep(sc, 0, "iwiinit", hz)) != 0) { 1879 aprint_error("%s: timeout waiting for firmware initialization " 1880 "to complete\n", sc->sc_dev.dv_xname); 1881 goto fail5; 1882 } 1883 1884 fail5: bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 1885 bus_dmamap_unload(sc->sc_dmat, map); 1886 fail4: bus_dmamem_unmap(sc->sc_dmat, virtaddr, size); 1887 fail3: bus_dmamem_free(sc->sc_dmat, &seg, 1); 1888 fail2: bus_dmamap_destroy(sc->sc_dmat, map); 1889 1890 fail1: return error; 1891 } 1892 1893 /* 1894 * Store firmware into kernel memory so we can download it when we need to, 1895 * e.g when the adapter wakes up from suspend mode. 1896 */ 1897 static int 1898 iwi_cache_firmware(struct iwi_softc *sc, void *data) 1899 { 1900 struct iwi_firmware *kfw = &sc->fw; 1901 struct iwi_firmware ufw; 1902 int error; 1903 1904 iwi_free_firmware(sc); 1905 1906 if ((error = copyin(data, &ufw, sizeof ufw)) != 0) 1907 goto fail1; 1908 1909 kfw->boot_size = ufw.boot_size; 1910 kfw->ucode_size = ufw.ucode_size; 1911 kfw->main_size = ufw.main_size; 1912 1913 kfw->boot = malloc(kfw->boot_size, M_DEVBUF, M_NOWAIT); 1914 if (kfw->boot == NULL) { 1915 error = ENOMEM; 1916 goto fail1; 1917 } 1918 1919 kfw->ucode = malloc(kfw->ucode_size, M_DEVBUF, M_NOWAIT); 1920 if (kfw->ucode == NULL) { 1921 error = ENOMEM; 1922 goto fail2; 1923 } 1924 1925 kfw->main = malloc(kfw->main_size, M_DEVBUF, M_NOWAIT); 1926 if (kfw->main == NULL) { 1927 error = ENOMEM; 1928 goto fail3; 1929 } 1930 1931 if ((error = copyin(ufw.boot, kfw->boot, kfw->boot_size)) != 0) 1932 goto fail4; 1933 1934 if ((error = copyin(ufw.ucode, kfw->ucode, kfw->ucode_size)) != 0) 1935 goto fail4; 1936 1937 if ((error = copyin(ufw.main, kfw->main, kfw->main_size)) != 0) 1938 goto fail4; 1939 1940 DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n", 1941 kfw->boot_size, kfw->ucode_size, kfw->main_size)); 1942 1943 sc->flags |= IWI_FLAG_FW_CACHED; 1944 1945 return 0; 1946 1947 fail4: free(kfw->boot, M_DEVBUF); 1948 fail3: free(kfw->ucode, M_DEVBUF); 1949 fail2: free(kfw->main, M_DEVBUF); 1950 fail1: 1951 return error; 1952 } 1953 1954 static void 1955 iwi_free_firmware(struct iwi_softc *sc) 1956 { 1957 if (!(sc->flags & IWI_FLAG_FW_CACHED)) 1958 return; 1959 1960 free(sc->fw.boot, M_DEVBUF); 1961 free(sc->fw.ucode, M_DEVBUF); 1962 free(sc->fw.main, M_DEVBUF); 1963 1964 sc->flags &= ~IWI_FLAG_FW_CACHED; 1965 } 1966 1967 static int 1968 iwi_config(struct iwi_softc *sc) 1969 { 1970 struct ieee80211com *ic = &sc->sc_ic; 1971 struct ifnet *ifp = &sc->sc_if; 1972 struct iwi_configuration config; 1973 struct iwi_rateset rs; 1974 struct iwi_txpower power; 1975 struct ieee80211_key *wk; 1976 struct iwi_wep_key wepkey; 1977 u_int32_t data; 1978 int error, i; 1979 1980 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1981 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 1982 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 1983 IEEE80211_ADDR_LEN, 0); 1984 if (error != 0) 1985 return error; 1986 1987 memset(&config, 0, sizeof config); 1988 config.bluetooth_coexistence = sc->bluetooth; 1989 config.antenna = sc->antenna; 1990 config.multicast_enabled = 1; 1991 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 1992 config.disable_unicast_decryption = 1; 1993 config.disable_multicast_decryption = 1; 1994 DPRINTF(("Configuring adapter\n")); 1995 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, sizeof config, 1996 0); 1997 if (error != 0) 1998 return error; 1999 2000 data = htole32(IWI_POWER_MODE_CAM); 2001 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2002 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 2003 if (error != 0) 2004 return error; 2005 2006 data = htole32(ic->ic_rtsthreshold); 2007 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2008 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 2009 if (error != 0) 2010 return error; 2011 2012 data = htole32(ic->ic_fragthreshold); 2013 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2014 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data, 0); 2015 if (error != 0) 2016 return error; 2017 2018 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2019 power.mode = IWI_MODE_11B; 2020 power.nchan = 11; 2021 for (i = 0; i < 11; i++) { 2022 power.chan[i].chan = i + 1; 2023 power.chan[i].power = IWI_TXPOWER_MAX; 2024 } 2025 DPRINTF(("Setting .11b channels tx power\n")); 2026 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2027 0); 2028 if (error != 0) 2029 return error; 2030 2031 power.mode = IWI_MODE_11G; 2032 DPRINTF(("Setting .11g channels tx power\n")); 2033 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2034 0); 2035 if (error != 0) 2036 return error; 2037 } 2038 2039 rs.mode = IWI_MODE_11G; 2040 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2041 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2042 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2043 rs.nrates); 2044 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2045 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2046 if (error != 0) 2047 return error; 2048 2049 rs.mode = IWI_MODE_11A; 2050 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2051 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2052 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2053 rs.nrates); 2054 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2055 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2056 if (error != 0) 2057 return error; 2058 2059 data = htole32(arc4random()); 2060 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2061 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0); 2062 if (error != 0) 2063 return error; 2064 2065 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2066 wk = &ic->ic_crypto.cs_nw_keys[i]; 2067 2068 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2069 wepkey.idx = i; 2070 wepkey.len = wk->wk_keylen; 2071 memset(wepkey.key, 0, sizeof wepkey.key); 2072 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2073 DPRINTF(("Setting wep key index %u len %u\n", 2074 wepkey.idx, wepkey.len)); 2075 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2076 sizeof wepkey, 0); 2077 if (error != 0) 2078 return error; 2079 } 2080 2081 /* Enable adapter */ 2082 DPRINTF(("Enabling adapter\n")); 2083 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 2084 } 2085 2086 static int 2087 iwi_set_chan(struct iwi_softc *sc, struct ieee80211_channel *chan) 2088 { 2089 struct ieee80211com *ic = &sc->sc_ic; 2090 struct iwi_scan scan; 2091 2092 (void)memset(&scan, 0, sizeof scan); 2093 scan.type = IWI_SCAN_TYPE_PASSIVE; 2094 scan.dwelltime = htole16(2000); 2095 scan.channels[0] = 1 | (IEEE80211_IS_CHAN_5GHZ(chan) ? IWI_CHAN_5GHZ : 2096 IWI_CHAN_2GHZ); 2097 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2098 2099 DPRINTF(("Setting channel to %u\n", ieee80211_chan2ieee(ic, chan))); 2100 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 2101 } 2102 2103 static int 2104 iwi_scan(struct iwi_softc *sc) 2105 { 2106 struct ieee80211com *ic = &sc->sc_ic; 2107 struct iwi_scan scan; 2108 u_int8_t *p; 2109 int i, count; 2110 2111 (void)memset(&scan, 0, sizeof scan); 2112 scan.type = IWI_SCAN_TYPE_BROADCAST; 2113 scan.dwelltime = htole16(sc->dwelltime); 2114 2115 p = scan.channels; 2116 count = 0; 2117 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2118 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) && 2119 isset(ic->ic_chan_active, i)) { 2120 *++p = i; 2121 count++; 2122 } 2123 } 2124 *(p - count) = IWI_CHAN_5GHZ | count; 2125 2126 count = 0; 2127 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2128 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) && 2129 isset(ic->ic_chan_active, i)) { 2130 *++p = i; 2131 count++; 2132 } 2133 } 2134 *(p - count) = IWI_CHAN_2GHZ | count; 2135 2136 DPRINTF(("Start scanning\n")); 2137 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 2138 } 2139 2140 static int 2141 iwi_auth_and_assoc(struct iwi_softc *sc) 2142 { 2143 struct ieee80211com *ic = &sc->sc_ic; 2144 struct ieee80211_node *ni = ic->ic_bss; 2145 struct ifnet *ifp = &sc->sc_if; 2146 struct iwi_configuration config; 2147 struct iwi_associate assoc; 2148 struct iwi_rateset rs; 2149 u_int16_t capinfo; 2150 u_int32_t data; 2151 int error; 2152 2153 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2154 memset(&config, 0, sizeof config); 2155 config.bluetooth_coexistence = sc->bluetooth; 2156 config.antenna = sc->antenna; 2157 config.multicast_enabled = 1; 2158 config.use_protection = 1; 2159 config.answer_pbreq = 2160 (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2161 config.disable_unicast_decryption = 1; 2162 config.disable_multicast_decryption = 1; 2163 DPRINTF(("Configuring adapter\n")); 2164 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, 2165 sizeof config, 1); 2166 if (error != 0) 2167 return error; 2168 } 2169 2170 #ifdef IWI_DEBUG 2171 if (iwi_debug > 0) { 2172 printf("Setting ESSID to "); 2173 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2174 printf("\n"); 2175 } 2176 #endif 2177 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 2178 if (error != 0) 2179 return error; 2180 2181 /* the rate set has already been "negociated" */ 2182 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2183 IWI_MODE_11G; 2184 rs.type = IWI_RATESET_TYPE_NEGOCIATED; 2185 rs.nrates = ni->ni_rates.rs_nrates; 2186 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2187 DPRINTF(("Setting negociated rates (%u)\n", rs.nrates)); 2188 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 2189 if (error != 0) 2190 return error; 2191 2192 if (ic->ic_opt_ie != NULL) { 2193 DPRINTF(("Setting optional IE (len=%u)\n", ic->ic_opt_ie_len)); 2194 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ic->ic_opt_ie, 2195 ic->ic_opt_ie_len, 1); 2196 if (error != 0) 2197 return error; 2198 } 2199 data = htole32(ni->ni_rssi); 2200 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 2201 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 2202 if (error != 0) 2203 return error; 2204 2205 memset(&assoc, 0, sizeof assoc); 2206 assoc.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2207 IWI_MODE_11G; 2208 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2209 if (ni->ni_authmode == IEEE80211_AUTH_SHARED) 2210 assoc.auth = (ic->ic_crypto.cs_def_txkey << 4) | IWI_AUTH_SHARED; 2211 if (ic->ic_opt_ie != NULL) 2212 assoc.policy |= htole16(IWI_POLICY_OPTIE); 2213 memcpy(assoc.tstamp, ni->ni_tstamp.data, 8); 2214 2215 if (ic->ic_opmode == IEEE80211_M_IBSS) 2216 capinfo = IEEE80211_CAPINFO_IBSS; 2217 else 2218 capinfo = IEEE80211_CAPINFO_ESS; 2219 if (ic->ic_flags & IEEE80211_F_PRIVACY) 2220 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2221 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2222 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2223 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2224 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2225 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2226 assoc.capinfo = htole16(capinfo); 2227 2228 assoc.lintval = htole16(ic->ic_lintval); 2229 assoc.intval = htole16(ni->ni_intval); 2230 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 2231 if (ic->ic_opmode == IEEE80211_M_IBSS) 2232 IEEE80211_ADDR_COPY(assoc.dst, ifp->if_broadcastaddr); 2233 else 2234 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 2235 DPRINTF(("Trying to associate to %s channel %u auth %u\n", 2236 ether_sprintf(assoc.bssid), assoc.chan, assoc.auth)); 2237 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 2238 } 2239 2240 static int 2241 iwi_init(struct ifnet *ifp) 2242 { 2243 struct iwi_softc *sc = ifp->if_softc; 2244 struct ieee80211com *ic = &sc->sc_ic; 2245 struct iwi_firmware *fw = &sc->fw; 2246 int i, error; 2247 2248 /* exit immediately if firmware has not been ioctl'd */ 2249 if (!(sc->flags & IWI_FLAG_FW_CACHED)) { 2250 if (!(sc->flags & IWI_FLAG_FW_WARNED)) 2251 aprint_error("%s: Firmware not loaded\n", 2252 sc->sc_dev.dv_xname); 2253 sc->flags |= IWI_FLAG_FW_WARNED; 2254 ifp->if_flags &= ~IFF_UP; 2255 return EIO; 2256 } 2257 2258 iwi_stop(ifp, 0); 2259 2260 if ((error = iwi_reset(sc)) != 0) { 2261 aprint_error("%s: could not reset adapter\n", 2262 sc->sc_dev.dv_xname); 2263 goto fail; 2264 } 2265 2266 if ((error = iwi_load_firmware(sc, fw->boot, fw->boot_size)) != 0) { 2267 aprint_error("%s: could not load boot firmware\n", 2268 sc->sc_dev.dv_xname); 2269 goto fail; 2270 } 2271 2272 if ((error = iwi_load_ucode(sc, fw->ucode, fw->ucode_size)) != 0) { 2273 aprint_error("%s: could not load microcode\n", 2274 sc->sc_dev.dv_xname); 2275 goto fail; 2276 } 2277 2278 iwi_stop_master(sc); 2279 2280 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.desc_map->dm_segs[0].ds_addr); 2281 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 2282 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 2283 2284 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2285 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq.count); 2286 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq.cur); 2287 2288 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2289 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq.count); 2290 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq.cur); 2291 2292 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2293 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq.count); 2294 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq.cur); 2295 2296 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2297 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq.count); 2298 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq.cur); 2299 2300 for (i = 0; i < sc->rxq.count; i++) 2301 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, 2302 sc->rxq.data[i].map->dm_segs[0].ds_addr); 2303 2304 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count -1); 2305 2306 if ((error = iwi_load_firmware(sc, fw->main, fw->main_size)) != 0) { 2307 aprint_error("%s: could not load main firmware\n", 2308 sc->sc_dev.dv_xname); 2309 goto fail; 2310 } 2311 2312 sc->flags |= IWI_FLAG_FW_INITED; 2313 2314 if ((error = iwi_config(sc)) != 0) { 2315 aprint_error("%s: device configuration failed\n", 2316 sc->sc_dev.dv_xname); 2317 goto fail; 2318 } 2319 2320 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2321 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2322 else 2323 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2324 2325 ifp->if_flags &= ~IFF_OACTIVE; 2326 ifp->if_flags |= IFF_RUNNING; 2327 2328 return 0; 2329 2330 fail: ifp->if_flags &= ~IFF_UP; 2331 iwi_stop(ifp, 0); 2332 2333 return error; 2334 } 2335 2336 static void 2337 iwi_stop(struct ifnet *ifp, int disable) 2338 { 2339 struct iwi_softc *sc = ifp->if_softc; 2340 struct ieee80211com *ic = &sc->sc_ic; 2341 2342 iwi_stop_master(sc); 2343 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2344 2345 /* reset rings */ 2346 iwi_reset_cmd_ring(sc, &sc->cmdq); 2347 iwi_reset_tx_ring(sc, &sc->txq); 2348 iwi_reset_rx_ring(sc, &sc->rxq); 2349 2350 ifp->if_timer = 0; 2351 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2352 2353 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2354 } 2355
Indexes created Fri Oct 03 02:09:57 GMT 2025