if_iwi.c revision 1.17
1 /* $NetBSD: if_iwi.c,v 1.17 2005/08/30 21:05:47 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 1.17 2005/08/30 21:05:47 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 return 0; 423 } 424 425 static int 426 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, 427 int count) 428 { 429 int error, nsegs; 430 431 ring->count = count; 432 ring->queued = 0; 433 ring->cur = ring->next = 0; 434 435 /* 436 * Allocate and map command ring 437 */ 438 error = bus_dmamap_create(sc->sc_dmat, 439 sizeof (struct iwi_cmd_desc) * count, 1, 440 sizeof (struct iwi_cmd_desc) * count, 0, 441 BUS_DMA_NOWAIT, &ring->desc_map); 442 if (error != 0) { 443 aprint_error("%s: could not create command ring DMA map\n", 444 sc->sc_dev.dv_xname); 445 goto fail; 446 } 447 448 error = bus_dmamem_alloc(sc->sc_dmat, 449 sizeof (struct iwi_cmd_desc) * count, PAGE_SIZE, 0, 450 &sc->cmdq.desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 451 if (error != 0) { 452 aprint_error("%s: could not allocate command ring DMA memory\n", 453 sc->sc_dev.dv_xname); 454 goto fail; 455 } 456 457 error = bus_dmamem_map(sc->sc_dmat, &sc->cmdq.desc_seg, nsegs, 458 sizeof (struct iwi_cmd_desc) * count, 459 (caddr_t *)&sc->cmdq.desc, BUS_DMA_NOWAIT); 460 if (error != 0) { 461 aprint_error("%s: could not map command ring DMA memory\n", 462 sc->sc_dev.dv_xname); 463 goto fail; 464 } 465 466 error = bus_dmamap_load(sc->sc_dmat, sc->cmdq.desc_map, sc->cmdq.desc, 467 sizeof (struct iwi_cmd_desc) * count, NULL, 468 BUS_DMA_NOWAIT); 469 if (error != 0) { 470 aprint_error("%s: could not load command ring DMA map\n", 471 sc->sc_dev.dv_xname); 472 goto fail; 473 } 474 475 memset(sc->cmdq.desc, 0, 476 sizeof (struct iwi_cmd_desc) * count); 477 478 return 0; 479 480 fail: iwi_free_cmd_ring(sc, ring); 481 return error; 482 } 483 484 static void 485 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 486 { 487 ring->queued = 0; 488 ring->cur = ring->next = 0; 489 } 490 491 static void 492 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 493 { 494 if (ring->desc_map != NULL) { 495 if (ring->desc != NULL) { 496 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 497 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 498 sizeof (struct iwi_cmd_desc) * ring->count); 499 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 500 } 501 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 502 } 503 } 504 505 static int 506 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, 507 int count) 508 { 509 int i, error, nsegs; 510 511 ring->count = count; 512 ring->queued = 0; 513 ring->cur = ring->next = 0; 514 515 /* 516 * Allocate and map Tx ring 517 */ 518 error = bus_dmamap_create(sc->sc_dmat, 519 sizeof (struct iwi_tx_desc) * count, 1, 520 sizeof (struct iwi_tx_desc) * count, 0, BUS_DMA_NOWAIT, 521 &ring->desc_map); 522 if (error != 0) { 523 aprint_error("%s: could not create tx ring DMA map\n", 524 sc->sc_dev.dv_xname); 525 goto fail; 526 } 527 528 error = bus_dmamem_alloc(sc->sc_dmat, 529 sizeof (struct iwi_tx_desc) * count, PAGE_SIZE, 0, 530 &ring->desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 531 if (error != 0) { 532 aprint_error("%s: could not allocate tx ring DMA memory\n", 533 sc->sc_dev.dv_xname); 534 goto fail; 535 } 536 537 error = bus_dmamem_map(sc->sc_dmat, &ring->desc_seg, nsegs, 538 sizeof (struct iwi_tx_desc) * count, 539 (caddr_t *)&ring->desc, BUS_DMA_NOWAIT); 540 if (error != 0) { 541 aprint_error("%s: could not map tx ring DMA memory\n", 542 sc->sc_dev.dv_xname); 543 goto fail; 544 } 545 546 error = bus_dmamap_load(sc->sc_dmat, ring->desc_map, ring->desc, 547 sizeof (struct iwi_tx_desc) * count, NULL, 548 BUS_DMA_NOWAIT); 549 if (error != 0) { 550 aprint_error("%s: could not load tx ring DMA map\n", 551 sc->sc_dev.dv_xname); 552 goto fail; 553 } 554 555 memset(ring->desc, 0, sizeof (struct iwi_tx_desc) * count); 556 557 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 558 M_NOWAIT | M_ZERO); 559 if (ring->data == NULL) { 560 aprint_error("%s: could not allocate soft data\n", 561 sc->sc_dev.dv_xname); 562 error = ENOMEM; 563 goto fail; 564 } 565 566 /* 567 * Allocate Tx buffers DMA maps 568 */ 569 for (i = 0; i < count; i++) { 570 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, IWI_MAX_NSEG, 571 MCLBYTES, 0, BUS_DMA_NOWAIT, &ring->data[i].map); 572 if (error != 0) { 573 aprint_error("%s: could not create tx buf DMA map", 574 sc->sc_dev.dv_xname); 575 goto fail; 576 } 577 } 578 return 0; 579 580 fail: iwi_free_tx_ring(sc, ring); 581 return error; 582 } 583 584 static void 585 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 586 { 587 struct iwi_tx_data *data; 588 int i; 589 590 for (i = 0; i < ring->count; i++) { 591 data = &ring->data[i]; 592 593 if (data->m != NULL) { 594 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 595 MCLBYTES, BUS_DMASYNC_POSTWRITE); 596 bus_dmamap_unload(sc->sc_dmat, data->map); 597 m_freem(data->m); 598 data->m = NULL; 599 } 600 601 if (data->ni != NULL) { 602 ieee80211_free_node(data->ni); 603 data->ni = NULL; 604 } 605 } 606 607 ring->queued = 0; 608 ring->cur = ring->next = 0; 609 } 610 611 static void 612 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 613 { 614 int i; 615 616 if (ring->desc_map != NULL) { 617 if (ring->desc != NULL) { 618 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 619 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 620 sizeof (struct iwi_tx_desc) * ring->count); 621 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 622 } 623 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 624 } 625 626 for (i = 0; i < ring->count; i++) { 627 if (ring->data[i].m != NULL) { 628 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 629 m_freem(ring->data[i].m); 630 } 631 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 632 } 633 } 634 635 static int 636 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, 637 int count) 638 { 639 int i, error; 640 641 ring->count = count; 642 ring->cur = 0; 643 644 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 645 M_NOWAIT | M_ZERO); 646 if (ring->data == NULL) { 647 aprint_error("%s: could not allocate soft data\n", 648 sc->sc_dev.dv_xname); 649 error = ENOMEM; 650 goto fail; 651 } 652 653 /* 654 * Allocate and map Rx buffers 655 */ 656 for (i = 0; i < count; i++) { 657 658 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 659 0, BUS_DMA_NOWAIT, &ring->data[i].map); 660 if (error != 0) { 661 aprint_error("%s: could not create rx buf DMA map", 662 sc->sc_dev.dv_xname); 663 goto fail; 664 } 665 666 MGETHDR(ring->data[i].m, M_DONTWAIT, MT_DATA); 667 if (ring->data[i].m == NULL) { 668 aprint_error("%s: could not allocate rx mbuf\n", 669 sc->sc_dev.dv_xname); 670 error = ENOMEM; 671 goto fail; 672 } 673 674 MCLGET(ring->data[i].m, M_DONTWAIT); 675 if (!(ring->data[i].m->m_flags & M_EXT)) { 676 m_freem(ring->data[i].m); 677 aprint_error("%s: could not allocate rx mbuf cluster\n", 678 sc->sc_dev.dv_xname); 679 error = ENOMEM; 680 goto fail; 681 } 682 683 error = bus_dmamap_load(sc->sc_dmat, ring->data[i].map, 684 mtod(ring->data[i].m, void *), MCLBYTES, NULL, 685 BUS_DMA_NOWAIT); 686 if (error != 0) { 687 aprint_error("%s: could not load rx buffer DMA map\n", 688 sc->sc_dev.dv_xname); 689 goto fail; 690 } 691 } 692 693 return 0; 694 695 fail: iwi_free_rx_ring(sc, ring); 696 return error; 697 } 698 699 static void 700 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 701 { 702 ring->cur = 0; 703 } 704 705 static void 706 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 707 { 708 int i; 709 710 for (i = 0; i < ring->count; i++) { 711 if (ring->data[i].m != NULL) { 712 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 713 m_freem(ring->data[i].m); 714 } 715 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 716 } 717 } 718 719 static void 720 iwi_shutdown(void *arg) 721 { 722 struct iwi_softc *sc = (struct iwi_softc *)arg; 723 struct ifnet *ifp = sc->sc_ic.ic_ifp; 724 725 iwi_stop(ifp, 1); 726 } 727 728 static int 729 iwi_suspend(struct iwi_softc *sc) 730 { 731 struct ifnet *ifp = sc->sc_ic.ic_ifp; 732 733 iwi_stop(ifp, 1); 734 735 return 0; 736 } 737 738 static int 739 iwi_resume(struct iwi_softc *sc) 740 { 741 struct ifnet *ifp = sc->sc_ic.ic_ifp; 742 pcireg_t data; 743 744 /* clear device specific PCI configuration register 0x41 */ 745 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 746 data &= ~0x0000ff00; 747 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 748 749 if (ifp->if_flags & IFF_UP) { 750 iwi_init(ifp); 751 if (ifp->if_flags & IFF_RUNNING) 752 iwi_start(ifp); 753 } 754 755 return 0; 756 } 757 758 static void 759 iwi_powerhook(int why, void *arg) 760 { 761 struct iwi_softc *sc = arg; 762 int s; 763 764 s = splnet(); 765 switch (why) { 766 case PWR_SUSPEND: 767 case PWR_STANDBY: 768 iwi_suspend(sc); 769 break; 770 case PWR_RESUME: 771 iwi_resume(sc); 772 break; 773 case PWR_SOFTSUSPEND: 774 case PWR_SOFTSTANDBY: 775 case PWR_SOFTRESUME: 776 break; 777 } 778 splx(s); 779 } 780 781 static int 782 iwi_media_change(struct ifnet *ifp) 783 { 784 int error; 785 786 error = ieee80211_media_change(ifp); 787 if (error != ENETRESET) 788 return error; 789 790 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 791 iwi_init(ifp); 792 793 return 0; 794 } 795 796 static void 797 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 798 { 799 struct iwi_softc *sc = ifp->if_softc; 800 struct ieee80211com *ic = &sc->sc_ic; 801 #define N(a) (sizeof (a) / sizeof (a[0])) 802 static const struct { 803 u_int32_t val; 804 int rate; 805 } rates[] = { 806 { IWI_RATE_DS1, 2 }, 807 { IWI_RATE_DS2, 4 }, 808 { IWI_RATE_DS5, 11 }, 809 { IWI_RATE_DS11, 22 }, 810 { IWI_RATE_OFDM6, 12 }, 811 { IWI_RATE_OFDM9, 18 }, 812 { IWI_RATE_OFDM12, 24 }, 813 { IWI_RATE_OFDM18, 36 }, 814 { IWI_RATE_OFDM24, 48 }, 815 { IWI_RATE_OFDM36, 72 }, 816 { IWI_RATE_OFDM48, 96 }, 817 { IWI_RATE_OFDM54, 108 }, 818 }; 819 u_int32_t val; 820 int rate, i; 821 822 imr->ifm_status = IFM_AVALID; 823 imr->ifm_active = IFM_IEEE80211; 824 if (ic->ic_state == IEEE80211_S_RUN) 825 imr->ifm_status |= IFM_ACTIVE; 826 827 /* read current transmission rate from adapter */ 828 val = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 829 830 /* convert rate to 802.11 rate */ 831 for (i = 0; i < N(rates) && rates[i].val != val; i++); 832 rate = (i < N(rates)) ? rates[i].rate : 0; 833 834 imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode); 835 switch (ic->ic_opmode) { 836 case IEEE80211_M_STA: 837 break; 838 839 case IEEE80211_M_IBSS: 840 imr->ifm_active |= IFM_IEEE80211_ADHOC; 841 break; 842 843 case IEEE80211_M_MONITOR: 844 imr->ifm_active |= IFM_IEEE80211_MONITOR; 845 break; 846 847 case IEEE80211_M_AHDEMO: 848 case IEEE80211_M_HOSTAP: 849 /* should not get there */ 850 break; 851 } 852 #undef N 853 } 854 855 static int 856 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 857 { 858 struct iwi_softc *sc = ic->ic_ifp->if_softc; 859 860 switch (nstate) { 861 case IEEE80211_S_SCAN: 862 if (sc->flags & IWI_FLAG_SCANNING) 863 break; 864 865 ieee80211_node_table_reset(&ic->ic_scan); 866 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 867 sc->flags |= IWI_FLAG_SCANNING; 868 iwi_scan(sc); 869 break; 870 871 case IEEE80211_S_AUTH: 872 iwi_auth_and_assoc(sc); 873 break; 874 875 case IEEE80211_S_RUN: 876 if (ic->ic_opmode == IEEE80211_M_IBSS) 877 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1); 878 else if (ic->ic_opmode == IEEE80211_M_MONITOR) 879 iwi_set_chan(sc, ic->ic_ibss_chan); 880 881 return (*sc->sc_newstate)(ic, nstate, 882 IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 883 884 case IEEE80211_S_ASSOC: 885 break; 886 887 case IEEE80211_S_INIT: 888 sc->flags &= ~IWI_FLAG_SCANNING; 889 break; 890 } 891 892 ic->ic_state = nstate; 893 return 0; 894 } 895 896 /* 897 * Read 16 bits at address 'addr' from the serial EEPROM. 898 * DON'T PLAY WITH THIS CODE UNLESS YOU KNOW *EXACTLY* WHAT YOU'RE DOING! 899 */ 900 static u_int16_t 901 iwi_read_prom_word(struct iwi_softc *sc, u_int8_t addr) 902 { 903 u_int32_t tmp; 904 u_int16_t val; 905 int n; 906 907 /* Clock C once before the first command */ 908 IWI_EEPROM_CTL(sc, 0); 909 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 910 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 911 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 912 913 /* Write start bit (1) */ 914 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 915 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 916 917 /* Write READ opcode (10) */ 918 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 919 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 920 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 921 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 922 923 /* Write address A7-A0 */ 924 for (n = 7; n >= 0; n--) { 925 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 926 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 927 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 928 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 929 } 930 931 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 932 933 /* Read data Q15-Q0 */ 934 val = 0; 935 for (n = 15; n >= 0; n--) { 936 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 937 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 938 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 939 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 940 } 941 942 IWI_EEPROM_CTL(sc, 0); 943 944 /* Clear Chip Select and clock C */ 945 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 946 IWI_EEPROM_CTL(sc, 0); 947 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 948 949 return be16toh(val); 950 } 951 952 /* 953 * XXX: Hack to set the current channel to the value advertised in beacons or 954 * probe responses. Only used during AP detection. 955 */ 956 static void 957 iwi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 958 { 959 struct ieee80211_frame *wh; 960 u_int8_t subtype; 961 u_int8_t *frm, *efrm; 962 963 wh = mtod(m, struct ieee80211_frame *); 964 965 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 966 return; 967 968 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 969 970 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 971 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 972 return; 973 974 frm = (u_int8_t *)(wh + 1); 975 efrm = mtod(m, u_int8_t *) + m->m_len; 976 977 frm += 12; /* skip tstamp, bintval and capinfo fields */ 978 while (frm < efrm) { 979 if (*frm == IEEE80211_ELEMID_DSPARMS) 980 #if IEEE80211_CHAN_MAX < 255 981 if (frm[2] <= IEEE80211_CHAN_MAX) 982 #endif 983 ic->ic_bss->ni_chan = &ic->ic_channels[frm[2]]; 984 985 frm += frm[1] + 2; 986 } 987 } 988 989 static void 990 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 991 struct iwi_frame *frame) 992 { 993 struct ieee80211com *ic = &sc->sc_ic; 994 struct ifnet *ifp = ic->ic_ifp; 995 struct mbuf *m; 996 struct ieee80211_frame *wh; 997 struct ieee80211_node *ni; 998 int error; 999 1000 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u\n", 1001 le16toh(frame->len), frame->chan, frame->rssi_dbm)); 1002 1003 bus_dmamap_sync(sc->sc_dmat, data->map, sizeof (struct iwi_hdr), 1004 sizeof (struct iwi_frame) + le16toh(frame->len), 1005 BUS_DMASYNC_POSTREAD); 1006 1007 if (le16toh(frame->len) < sizeof (struct ieee80211_frame) || 1008 le16toh(frame->len) > MCLBYTES) { 1009 DPRINTF(("%s: bad frame length\n", sc->sc_dev.dv_xname)); 1010 ifp->if_ierrors++; 1011 return; 1012 } 1013 1014 bus_dmamap_unload(sc->sc_dmat, data->map); 1015 1016 /* Finalize mbuf */ 1017 m = data->m; 1018 m->m_pkthdr.rcvif = ifp; 1019 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1020 sizeof (struct iwi_frame) + le16toh(frame->len); 1021 1022 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1023 1024 if (ic->ic_state == IEEE80211_S_SCAN) 1025 iwi_fix_channel(ic, m); 1026 1027 #if NBPFILTER > 0 1028 if (sc->sc_drvbpf != NULL) { 1029 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1030 1031 tap->wr_flags = 0; 1032 tap->wr_rate = frame->rate; 1033 tap->wr_chan_freq = 1034 htole16(ic->ic_channels[frame->chan].ic_freq); 1035 tap->wr_chan_flags = 1036 htole16(ic->ic_channels[frame->chan].ic_flags); 1037 tap->wr_antsignal = frame->signal; 1038 tap->wr_antenna = frame->antenna; 1039 1040 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m); 1041 } 1042 #endif 1043 1044 wh = mtod(m, struct ieee80211_frame *); 1045 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1046 1047 /* Send the frame to the upper layer */ 1048 ieee80211_input(ic, m, ni, frame->rssi_dbm, 0); 1049 1050 /* node is no longer needed */ 1051 ieee80211_free_node(ni); 1052 1053 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 1054 if (data->m == NULL) { 1055 aprint_error("%s: could not allocate rx mbuf\n", 1056 sc->sc_dev.dv_xname); 1057 return; 1058 } 1059 1060 MCLGET(data->m, M_DONTWAIT); 1061 if (!(data->m->m_flags & M_EXT)) { 1062 aprint_error("%s: could not allocate rx mbuf cluster\n", 1063 sc->sc_dev.dv_xname); 1064 m_freem(data->m); 1065 data->m = NULL; 1066 return; 1067 } 1068 1069 error = bus_dmamap_load(sc->sc_dmat, data->map, mtod(data->m, void *), 1070 MCLBYTES, NULL, BUS_DMA_NOWAIT); 1071 if (error != 0) { 1072 aprint_error("%s: could not load rx buf DMA map\n", 1073 sc->sc_dev.dv_xname); 1074 m_freem(data->m); 1075 data->m = NULL; 1076 return; 1077 } 1078 1079 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, data->map->dm_segs[0].ds_addr); 1080 } 1081 1082 static void 1083 iwi_notification_intr(struct iwi_softc *sc, struct iwi_rx_data *buf, 1084 struct iwi_notif *notif) 1085 { 1086 struct ieee80211com *ic = &sc->sc_ic; 1087 struct iwi_notif_scan_channel *chan; 1088 struct iwi_notif_scan_complete *scan; 1089 struct iwi_notif_authentication *auth; 1090 struct iwi_notif_association *assoc; 1091 1092 bus_dmamap_sync(sc->sc_dmat, buf->map, sizeof (struct iwi_hdr), 1093 sizeof (struct iwi_notif) + le16toh(notif->len), 1094 BUS_DMASYNC_POSTREAD); 1095 1096 switch (notif->type) { 1097 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1098 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1099 1100 DPRINTFN(2, ("Scanning channel (%u)\n", chan->nchan)); 1101 break; 1102 1103 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1104 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1105 1106 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1107 scan->status)); 1108 1109 /* monitor mode uses scan to set the channel ... */ 1110 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1111 sc->flags &= ~IWI_FLAG_SCANNING; 1112 ieee80211_end_scan(ic); 1113 } else 1114 iwi_set_chan(sc, ic->ic_ibss_chan); 1115 break; 1116 1117 case IWI_NOTIF_TYPE_AUTHENTICATION: 1118 auth = (struct iwi_notif_authentication *)(notif + 1); 1119 1120 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 1121 1122 switch (auth->state) { 1123 case IWI_AUTHENTICATED: 1124 ieee80211_node_authorize(ic, ic->ic_bss); 1125 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1126 break; 1127 1128 case IWI_DEAUTHENTICATED: 1129 break; 1130 1131 default: 1132 aprint_error("%s: unknown authentication state %u\n", 1133 sc->sc_dev.dv_xname, auth->state); 1134 } 1135 break; 1136 1137 case IWI_NOTIF_TYPE_ASSOCIATION: 1138 assoc = (struct iwi_notif_association *)(notif + 1); 1139 1140 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 1141 assoc->status)); 1142 1143 switch (assoc->state) { 1144 case IWI_AUTHENTICATED: 1145 /* re-association, do nothing */ 1146 break; 1147 1148 case IWI_ASSOCIATED: 1149 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1150 break; 1151 1152 case IWI_DEASSOCIATED: 1153 ieee80211_begin_scan(ic, 1); 1154 break; 1155 1156 default: 1157 aprint_error("%s: unknown association state %u\n", 1158 sc->sc_dev.dv_xname, assoc->state); 1159 } 1160 break; 1161 1162 case IWI_NOTIF_TYPE_CALIBRATION: 1163 case IWI_NOTIF_TYPE_BEACON: 1164 case IWI_NOTIF_TYPE_NOISE: 1165 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1166 break; 1167 1168 default: 1169 aprint_error("%s: unknown notification type %u\n", 1170 sc->sc_dev.dv_xname, notif->type); 1171 } 1172 } 1173 1174 static void 1175 iwi_rx_intr(struct iwi_softc *sc) 1176 { 1177 struct iwi_rx_data *data; 1178 struct iwi_hdr *hdr; 1179 uint32_t hw; 1180 1181 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1182 1183 for (; sc->rxq.cur != hw;) { 1184 data = &sc->rxq.data[sc->rxq.cur]; 1185 1186 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1187 sizeof (struct iwi_hdr), BUS_DMASYNC_POSTREAD); 1188 1189 hdr = mtod(data->m, struct iwi_hdr *); 1190 1191 switch (hdr->type) { 1192 case IWI_HDR_TYPE_FRAME: 1193 iwi_frame_intr(sc, data, sc->rxq.cur, 1194 (struct iwi_frame *)(hdr + 1)); 1195 break; 1196 1197 case IWI_HDR_TYPE_NOTIF: 1198 iwi_notification_intr(sc, data, 1199 (struct iwi_notif *)(hdr + 1)); 1200 break; 1201 1202 default: 1203 aprint_error("%s: unknown hdr type %u\n", 1204 sc->sc_dev.dv_xname, hdr->type); 1205 } 1206 1207 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1208 1209 sc->rxq.cur = (sc->rxq.cur + 1) % sc->rxq.count; 1210 } 1211 1212 1213 /* Tell the firmware what we have processed */ 1214 hw = (hw == 0) ? sc->rxq.count - 1 : hw - 1; 1215 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1216 } 1217 1218 static void 1219 iwi_tx_intr(struct iwi_softc *sc) 1220 { 1221 struct ifnet *ifp = &sc->sc_if; 1222 struct iwi_tx_data *data; 1223 u_int32_t hw; 1224 1225 hw = CSR_READ_4(sc, IWI_CSR_TX1_RIDX); 1226 1227 for (; sc->txq.next != hw;) { 1228 data = &sc->txq.data[sc->txq.next]; 1229 1230 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1231 MCLBYTES, BUS_DMASYNC_POSTWRITE); 1232 bus_dmamap_unload(sc->sc_dmat, data->map); 1233 m_freem(data->m); 1234 data->m = NULL; 1235 ieee80211_free_node(data->ni); 1236 data->ni = NULL; 1237 1238 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next)); 1239 1240 ifp->if_opackets++; 1241 1242 sc->txq.queued--; 1243 sc->txq.next = (sc->txq.next + 1) % sc->txq.count; 1244 } 1245 1246 sc->sc_tx_timer = 0; 1247 ifp->if_flags &= ~IFF_OACTIVE; 1248 1249 /* Call start() since some buffer descriptors have been released */ 1250 (*ifp->if_start)(ifp); 1251 } 1252 1253 static int 1254 iwi_intr(void *arg) 1255 { 1256 struct iwi_softc *sc = arg; 1257 u_int32_t r; 1258 1259 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1260 return 0; 1261 1262 /* Disable interrupts */ 1263 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1264 1265 if (r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)) { 1266 aprint_error("%s: fatal error\n", sc->sc_dev.dv_xname); 1267 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1268 iwi_stop(&sc->sc_if, 1); 1269 } 1270 1271 if (r & IWI_INTR_FW_INITED) { 1272 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1273 wakeup(sc); 1274 } 1275 1276 if (r & IWI_INTR_RADIO_OFF) { 1277 DPRINTF(("radio transmitter off\n")); 1278 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1279 iwi_stop(&sc->sc_if, 1); 1280 } 1281 1282 if (r & IWI_INTR_RX_DONE) 1283 iwi_rx_intr(sc); 1284 1285 if (r & IWI_INTR_CMD_DONE) 1286 wakeup(sc); 1287 1288 if (r & IWI_INTR_TX1_DONE) 1289 iwi_tx_intr(sc); 1290 1291 /* Acknowledge interrupts */ 1292 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1293 1294 /* Re-enable interrupts */ 1295 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1296 1297 return 1; 1298 } 1299 1300 static int 1301 iwi_cmd(struct iwi_softc *sc, u_int8_t type, void *data, u_int8_t len, 1302 int async) 1303 { 1304 struct iwi_cmd_desc *desc; 1305 1306 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1307 1308 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1309 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1310 desc->type = type; 1311 desc->len = len; 1312 memcpy(desc->data, data, len); 1313 1314 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 1315 sc->cmdq.cur * sizeof (struct iwi_cmd_desc), 1316 sizeof (struct iwi_cmd_desc), BUS_DMASYNC_PREWRITE); 1317 1318 DPRINTFN(2, ("sending command type=%u len=%u\n", 1319 type, len)); 1320 1321 sc->cmdq.cur = (sc->cmdq.cur + 1) % sc->cmdq.count; 1322 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1323 1324 return async ? 0 : tsleep(sc, 0, "iwicmd", hz); 1325 } 1326 1327 static int 1328 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1329 { 1330 struct iwi_softc *sc = ifp->if_softc; 1331 struct ieee80211com *ic = &sc->sc_ic; 1332 struct ieee80211_frame wh; 1333 struct ieee80211_key *k; 1334 struct iwi_tx_data *data; 1335 struct iwi_tx_desc *desc; 1336 struct mbuf *mnew; 1337 int error, i; 1338 1339 (void)memcpy(&wh, mtod(m0, struct ieee80211_frame *), sizeof(wh)); 1340 if (wh.i_fc[1] & IEEE80211_FC1_WEP) { 1341 k = ieee80211_crypto_encap(ic, ni, m0); 1342 if (k == NULL) { 1343 m_freem(m0); 1344 return ENOBUFS; 1345 } 1346 } 1347 1348 #if NBPFILTER > 0 1349 if (sc->sc_drvbpf != NULL) { 1350 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1351 1352 tap->wt_flags = 0; 1353 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1354 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1355 1356 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1357 } 1358 #endif 1359 1360 data = &sc->txq.data[sc->txq.cur]; 1361 desc = &sc->txq.desc[sc->txq.cur]; 1362 1363 /* trim IEEE802.11 header */ 1364 m_adj(m0, sizeof (struct ieee80211_frame)); 1365 1366 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, BUS_DMA_NOWAIT); 1367 if (error != 0 && error != EFBIG) { 1368 aprint_error("%s: could not map mbuf (error %d)\n", 1369 sc->sc_dev.dv_xname, error); 1370 m_freem(m0); 1371 return error; 1372 } 1373 if (error != 0) { 1374 /* too many fragments, linearize */ 1375 1376 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1377 if (mnew == NULL) { 1378 m_freem(m0); 1379 return ENOMEM; 1380 } 1381 1382 M_COPY_PKTHDR(mnew, m0); 1383 MCLGET(mnew, M_DONTWAIT); 1384 if (!(mnew->m_flags & M_EXT)) { 1385 m_freem(m0); 1386 m_freem(mnew); 1387 return ENOMEM; 1388 } 1389 1390 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, caddr_t)); 1391 m_freem(m0); 1392 mnew->m_len = mnew->m_pkthdr.len; 1393 m0 = mnew; 1394 1395 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1396 BUS_DMA_NOWAIT); 1397 if (error != 0) { 1398 aprint_error("%s: could not map mbuf (error %d)\n", 1399 sc->sc_dev.dv_xname, error); 1400 m_freem(m0); 1401 return error; 1402 } 1403 } 1404 1405 data->m = m0; 1406 data->ni = ni; 1407 1408 desc->hdr.type = IWI_HDR_TYPE_DATA; 1409 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1410 desc->cmd = IWI_DATA_CMD_TX; 1411 desc->len = htole16(m0->m_pkthdr.len); 1412 (void)memcpy(&desc->wh, &wh, sizeof (struct ieee80211_frame)); 1413 desc->flags = 0; 1414 if (!IEEE80211_IS_MULTICAST(wh.i_addr1)) 1415 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1416 1417 #if 0 1418 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 1419 wh.i_fc[1] |= IEEE80211_FC1_WEP; 1420 desc->wep_txkey = ic->ic_crypto.cs_def_txkey; 1421 } else 1422 #endif 1423 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1424 1425 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1426 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1427 1428 desc->nseg = htole32(data->map->dm_nsegs); 1429 for (i = 0; i < data->map->dm_nsegs; i++) { 1430 desc->seg_addr[i] = htole32(data->map->dm_segs[i].ds_addr); 1431 desc->seg_len[i] = htole32(data->map->dm_segs[i].ds_len); 1432 } 1433 1434 bus_dmamap_sync(sc->sc_dmat, sc->txq.desc_map, 1435 sc->txq.cur * sizeof (struct iwi_tx_desc), 1436 sizeof (struct iwi_tx_desc), BUS_DMASYNC_PREWRITE); 1437 1438 bus_dmamap_sync(sc->sc_dmat, data->map, 0, MCLBYTES, 1439 BUS_DMASYNC_PREWRITE); 1440 1441 DPRINTFN(5, ("sending data frame len=%u nseg=%u\n", 1442 desc->len, desc->nseg)); 1443 1444 /* Inform firmware about this new packet */ 1445 sc->txq.queued++; 1446 sc->txq.cur = (sc->txq.cur + 1) % sc->txq.count; 1447 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq.cur); 1448 1449 return 0; 1450 } 1451 1452 static void 1453 iwi_start(struct ifnet *ifp) 1454 { 1455 struct iwi_softc *sc = ifp->if_softc; 1456 struct ieee80211com *ic = &sc->sc_ic; 1457 struct mbuf *m0; 1458 struct ether_header *eh; 1459 struct ieee80211_node *ni; 1460 1461 if (ic->ic_state != IEEE80211_S_RUN) 1462 return; 1463 1464 for (;;) { 1465 IF_DEQUEUE(&ifp->if_snd, m0); 1466 if (m0 == NULL) 1467 break; 1468 1469 if (sc->txq.queued >= sc->txq.count - 4) { 1470 IF_PREPEND(&ifp->if_snd, m0); 1471 ifp->if_flags |= IFF_OACTIVE; 1472 break; 1473 } 1474 1475 if (m0->m_len < sizeof (struct ether_header) && 1476 (m0 = m_pullup(m0, sizeof (struct ether_header))) == NULL) 1477 continue; 1478 1479 #if NBPFILTER > 0 1480 if (ifp->if_bpf != NULL) 1481 bpf_mtap(ifp->if_bpf, m0); 1482 #endif 1483 1484 eh = mtod(m0, struct ether_header *); 1485 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1486 if (ni == NULL) { 1487 m_freem(m0); 1488 continue; 1489 } 1490 1491 #if NBPFILTER > 0 1492 if (ic->ic_rawbpf != NULL) 1493 bpf_mtap(ic->ic_rawbpf, m0); 1494 #endif 1495 m0 = ieee80211_encap(ic, m0, ni); 1496 if (m0 == NULL) { 1497 ieee80211_free_node(ni); 1498 continue; 1499 } 1500 1501 if (iwi_tx_start(ifp, m0, ni) != 0) { 1502 ieee80211_free_node(ni); 1503 ifp->if_oerrors++; 1504 break; 1505 } 1506 1507 /* start watchdog timer */ 1508 sc->sc_tx_timer = 5; 1509 ifp->if_timer = 1; 1510 } 1511 } 1512 1513 static void 1514 iwi_watchdog(struct ifnet *ifp) 1515 { 1516 struct iwi_softc *sc = ifp->if_softc; 1517 1518 ifp->if_timer = 0; 1519 1520 if (sc->sc_tx_timer > 0) { 1521 if (--sc->sc_tx_timer == 0) { 1522 aprint_error("%s: device timeout\n", 1523 sc->sc_dev.dv_xname); 1524 ifp->if_oerrors++; 1525 ifp->if_flags &= ~IFF_UP; 1526 iwi_stop(ifp, 1); 1527 return; 1528 } 1529 ifp->if_timer = 1; 1530 } 1531 1532 ieee80211_watchdog(&sc->sc_ic); 1533 } 1534 1535 static int 1536 iwi_get_table0(struct iwi_softc *sc, u_int32_t *tbl) 1537 { 1538 u_int32_t size, buf[128]; 1539 1540 if (!(sc->flags & IWI_FLAG_FW_INITED)) { 1541 memset(buf, 0, sizeof buf); 1542 return copyout(buf, tbl, sizeof buf); 1543 } 1544 1545 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 1546 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 1547 1548 return copyout(buf, tbl, sizeof buf); 1549 } 1550 1551 static int 1552 iwi_get_radio(struct iwi_softc *sc, int *ret) 1553 { 1554 int val; 1555 1556 val = (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1 : 0; 1557 return copyout(&val, ret, sizeof val); 1558 } 1559 1560 static int 1561 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1562 { 1563 struct iwi_softc *sc = ifp->if_softc; 1564 struct ifreq *ifr; 1565 int s, error = 0; 1566 1567 s = splnet(); 1568 1569 switch (cmd) { 1570 case SIOCSIFFLAGS: 1571 if (ifp->if_flags & IFF_UP) { 1572 if (!(ifp->if_flags & IFF_RUNNING)) 1573 iwi_init(ifp); 1574 } else { 1575 if (ifp->if_flags & IFF_RUNNING) 1576 iwi_stop(ifp, 1); 1577 } 1578 break; 1579 1580 case SIOCGTABLE0: 1581 ifr = (struct ifreq *)data; 1582 error = iwi_get_table0(sc, (u_int32_t *)ifr->ifr_data); 1583 break; 1584 1585 case SIOCGRADIO: 1586 ifr = (struct ifreq *)data; 1587 error = iwi_get_radio(sc, (int *)ifr->ifr_data); 1588 break; 1589 1590 case SIOCSLOADFW: 1591 /* only super-user can do that! */ 1592 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1593 break; 1594 1595 ifr = (struct ifreq *)data; 1596 error = iwi_cache_firmware(sc, ifr->ifr_data); 1597 break; 1598 1599 case SIOCSKILLFW: 1600 /* only super-user can do that! */ 1601 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1602 break; 1603 1604 ifp->if_flags &= ~IFF_UP; 1605 iwi_stop(ifp, 1); 1606 iwi_free_firmware(sc); 1607 break; 1608 1609 default: 1610 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 1611 } 1612 1613 if (error == ENETRESET && cmd != SIOCADDMULTI) { 1614 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1615 (IFF_UP | IFF_RUNNING)) 1616 iwi_init(ifp); 1617 error = 0; 1618 } 1619 1620 splx(s); 1621 return error; 1622 } 1623 1624 static void 1625 iwi_stop_master(struct iwi_softc *sc) 1626 { 1627 int ntries; 1628 1629 /* Disable interrupts */ 1630 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1631 1632 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1633 for (ntries = 0; ntries < 5; ntries++) { 1634 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1635 break; 1636 DELAY(10); 1637 } 1638 if (ntries == 5) 1639 aprint_error("%s: timeout waiting for master\n", 1640 sc->sc_dev.dv_xname); 1641 1642 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1643 IWI_RST_PRINCETON_RESET); 1644 1645 sc->flags &= ~IWI_FLAG_FW_INITED; 1646 } 1647 1648 static int 1649 iwi_reset(struct iwi_softc *sc) 1650 { 1651 int i, ntries; 1652 1653 iwi_stop_master(sc); 1654 1655 /* Move adapter to D0 state */ 1656 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1657 IWI_CTL_INIT); 1658 1659 /* Initialize Phase-Locked Level (PLL) */ 1660 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1661 1662 /* Wait for clock stabilization */ 1663 for (ntries = 0; ntries < 1000; ntries++) { 1664 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1665 break; 1666 DELAY(200); 1667 } 1668 if (ntries == 1000) 1669 return EIO; 1670 1671 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1672 IWI_RST_SW_RESET); 1673 1674 DELAY(10); 1675 1676 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1677 IWI_CTL_INIT); 1678 1679 /* Clear NIC memory */ 1680 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1681 for (i = 0; i < 0xc000; i++) 1682 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1683 1684 return 0; 1685 } 1686 1687 static int 1688 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size) 1689 { 1690 u_int16_t *w; 1691 int ntries, i; 1692 1693 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1694 IWI_RST_STOP_MASTER); 1695 for (ntries = 0; ntries < 5; ntries++) { 1696 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1697 break; 1698 DELAY(10); 1699 } 1700 if (ntries == 5) { 1701 aprint_error("%s: timeout waiting for master\n", 1702 sc->sc_dev.dv_xname); 1703 return EIO; 1704 } 1705 1706 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1707 DELAY(5000); 1708 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1709 ~IWI_RST_PRINCETON_RESET); 1710 DELAY(5000); 1711 MEM_WRITE_4(sc, 0x3000e0, 0); 1712 DELAY(1000); 1713 MEM_WRITE_4(sc, 0x300004, 1); 1714 DELAY(1000); 1715 MEM_WRITE_4(sc, 0x300004, 0); 1716 DELAY(1000); 1717 MEM_WRITE_1(sc, 0x200000, 0x00); 1718 MEM_WRITE_1(sc, 0x200000, 0x40); 1719 DELAY(1000); 1720 1721 /* Adapter is buggy, we must set the address for each word */ 1722 for (w = uc; size > 0; w++, size -= 2) 1723 MEM_WRITE_2(sc, 0x200010, *w); 1724 1725 MEM_WRITE_1(sc, 0x200000, 0x00); 1726 MEM_WRITE_1(sc, 0x200000, 0x80); 1727 1728 /* Wait until we get a response in the uc queue */ 1729 for (ntries = 0; ntries < 100; ntries++) { 1730 if (MEM_READ_1(sc, 0x200000) & 1) 1731 break; 1732 DELAY(100); 1733 } 1734 if (ntries == 100) { 1735 aprint_error("%s: timeout waiting for ucode to initialize\n", 1736 sc->sc_dev.dv_xname); 1737 return EIO; 1738 } 1739 1740 /* Empty the uc queue or the firmware will not initialize properly */ 1741 for (i = 0; i < 7; i++) 1742 MEM_READ_4(sc, 0x200004); 1743 1744 MEM_WRITE_1(sc, 0x200000, 0x00); 1745 1746 return 0; 1747 } 1748 1749 /* macro to handle unaligned little endian data in firmware image */ 1750 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1751 static int 1752 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size) 1753 { 1754 bus_dmamap_t map; 1755 bus_dma_segment_t seg; 1756 caddr_t virtaddr; 1757 u_char *p, *end; 1758 u_int32_t sentinel, ctl, src, dst, sum, len, mlen; 1759 int ntries, nsegs, error; 1760 1761 /* Allocate DMA memory for storing firmware image */ 1762 error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, 1763 BUS_DMA_NOWAIT, &map); 1764 if (error != 0) { 1765 aprint_error("%s: could not create firmware DMA map\n", 1766 sc->sc_dev.dv_xname); 1767 goto fail1; 1768 } 1769 1770 /* 1771 * We cannot map fw directly because of some hardware constraints on 1772 * the mapping address. 1773 */ 1774 error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 1775 &nsegs, BUS_DMA_NOWAIT); 1776 if (error != 0) { 1777 aprint_error("%s: could not allocate firmware DMA memory\n", 1778 sc->sc_dev.dv_xname); 1779 goto fail2; 1780 } 1781 1782 error = bus_dmamem_map(sc->sc_dmat, &seg, nsegs, size, &virtaddr, 1783 BUS_DMA_NOWAIT); 1784 if (error != 0) { 1785 aprint_error("%s: could not load firmware DMA map\n", 1786 sc->sc_dev.dv_xname); 1787 goto fail3; 1788 } 1789 1790 error = bus_dmamap_load(sc->sc_dmat, map, virtaddr, size, NULL, 1791 BUS_DMA_NOWAIT); 1792 if (error != 0) { 1793 aprint_error("%s: could not load fw dma map\n", 1794 sc->sc_dev.dv_xname); 1795 goto fail4; 1796 } 1797 1798 /* Copy firmware image to DMA memory */ 1799 memcpy(virtaddr, fw, size); 1800 1801 /* Make sure the adapter will get up-to-date values */ 1802 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 1803 1804 /* Tell the adapter where the command blocks are stored */ 1805 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 1806 1807 /* 1808 * Store command blocks into adapter's internal memory using register 1809 * indirections. The adapter will read the firmware image through DMA 1810 * using information stored in command blocks. 1811 */ 1812 src = map->dm_segs[0].ds_addr; 1813 p = virtaddr; 1814 end = p + size; 1815 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 1816 1817 while (p < end) { 1818 dst = GETLE32(p); p += 4; src += 4; 1819 len = GETLE32(p); p += 4; src += 4; 1820 p += len; 1821 1822 while (len > 0) { 1823 mlen = min(len, IWI_CB_MAXDATALEN); 1824 1825 ctl = IWI_CB_DEFAULT_CTL | mlen; 1826 sum = ctl ^ src ^ dst; 1827 1828 /* Write a command block */ 1829 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 1830 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 1831 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 1832 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 1833 1834 src += mlen; 1835 dst += mlen; 1836 len -= mlen; 1837 } 1838 } 1839 1840 /* Write a fictive final command block (sentinel) */ 1841 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 1842 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1843 1844 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1845 ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER)); 1846 1847 /* Tell the adapter to start processing command blocks */ 1848 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 1849 1850 /* Wait until the adapter has processed all command blocks */ 1851 for (ntries = 0; ntries < 400; ntries++) { 1852 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 1853 break; 1854 DELAY(100); 1855 } 1856 if (ntries == 400) { 1857 aprint_error("%s: timeout processing cb\n", 1858 sc->sc_dev.dv_xname); 1859 error = EIO; 1860 goto fail5; 1861 } 1862 1863 /* We're done with command blocks processing */ 1864 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 1865 1866 /* Allow interrupts so we know when the firmware is inited */ 1867 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1868 1869 /* Tell the adapter to initialize the firmware */ 1870 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 1871 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1872 IWI_CTL_ALLOW_STANDBY); 1873 1874 /* Wait at most one second for firmware initialization to complete */ 1875 if ((error = tsleep(sc, 0, "iwiinit", hz)) != 0) { 1876 aprint_error("%s: timeout waiting for firmware initialization " 1877 "to complete\n", sc->sc_dev.dv_xname); 1878 goto fail5; 1879 } 1880 1881 fail5: bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 1882 bus_dmamap_unload(sc->sc_dmat, map); 1883 fail4: bus_dmamem_unmap(sc->sc_dmat, virtaddr, size); 1884 fail3: bus_dmamem_free(sc->sc_dmat, &seg, 1); 1885 fail2: bus_dmamap_destroy(sc->sc_dmat, map); 1886 1887 fail1: return error; 1888 } 1889 1890 /* 1891 * Store firmware into kernel memory so we can download it when we need to, 1892 * e.g when the adapter wakes up from suspend mode. 1893 */ 1894 static int 1895 iwi_cache_firmware(struct iwi_softc *sc, void *data) 1896 { 1897 struct iwi_firmware *kfw = &sc->fw; 1898 struct iwi_firmware ufw; 1899 int error; 1900 1901 iwi_free_firmware(sc); 1902 1903 if ((error = copyin(data, &ufw, sizeof ufw)) != 0) 1904 goto fail1; 1905 1906 kfw->boot_size = ufw.boot_size; 1907 kfw->ucode_size = ufw.ucode_size; 1908 kfw->main_size = ufw.main_size; 1909 1910 kfw->boot = malloc(kfw->boot_size, M_DEVBUF, M_NOWAIT); 1911 if (kfw->boot == NULL) { 1912 error = ENOMEM; 1913 goto fail1; 1914 } 1915 1916 kfw->ucode = malloc(kfw->ucode_size, M_DEVBUF, M_NOWAIT); 1917 if (kfw->ucode == NULL) { 1918 error = ENOMEM; 1919 goto fail2; 1920 } 1921 1922 kfw->main = malloc(kfw->main_size, M_DEVBUF, M_NOWAIT); 1923 if (kfw->main == NULL) { 1924 error = ENOMEM; 1925 goto fail3; 1926 } 1927 1928 if ((error = copyin(ufw.boot, kfw->boot, kfw->boot_size)) != 0) 1929 goto fail4; 1930 1931 if ((error = copyin(ufw.ucode, kfw->ucode, kfw->ucode_size)) != 0) 1932 goto fail4; 1933 1934 if ((error = copyin(ufw.main, kfw->main, kfw->main_size)) != 0) 1935 goto fail4; 1936 1937 DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n", 1938 kfw->boot_size, kfw->ucode_size, kfw->main_size)); 1939 1940 sc->flags |= IWI_FLAG_FW_CACHED; 1941 1942 return 0; 1943 1944 fail4: free(kfw->boot, M_DEVBUF); 1945 fail3: free(kfw->ucode, M_DEVBUF); 1946 fail2: free(kfw->main, M_DEVBUF); 1947 fail1: 1948 return error; 1949 } 1950 1951 static void 1952 iwi_free_firmware(struct iwi_softc *sc) 1953 { 1954 if (!(sc->flags & IWI_FLAG_FW_CACHED)) 1955 return; 1956 1957 free(sc->fw.boot, M_DEVBUF); 1958 free(sc->fw.ucode, M_DEVBUF); 1959 free(sc->fw.main, M_DEVBUF); 1960 1961 sc->flags &= ~IWI_FLAG_FW_CACHED; 1962 } 1963 1964 static int 1965 iwi_config(struct iwi_softc *sc) 1966 { 1967 struct ieee80211com *ic = &sc->sc_ic; 1968 struct ifnet *ifp = &sc->sc_if; 1969 struct iwi_configuration config; 1970 struct iwi_rateset rs; 1971 struct iwi_txpower power; 1972 struct ieee80211_key *wk; 1973 struct iwi_wep_key wepkey; 1974 u_int32_t data; 1975 int error, i; 1976 1977 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1978 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 1979 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 1980 IEEE80211_ADDR_LEN, 0); 1981 if (error != 0) 1982 return error; 1983 1984 memset(&config, 0, sizeof config); 1985 config.bluetooth_coexistence = sc->bluetooth; 1986 config.antenna = sc->antenna; 1987 config.multicast_enabled = 1; 1988 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 1989 config.disable_unicast_decryption = 1; 1990 config.disable_multicast_decryption = 1; 1991 DPRINTF(("Configuring adapter\n")); 1992 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, sizeof config, 1993 0); 1994 if (error != 0) 1995 return error; 1996 1997 data = htole32(IWI_POWER_MODE_CAM); 1998 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 1999 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 2000 if (error != 0) 2001 return error; 2002 2003 data = htole32(ic->ic_rtsthreshold); 2004 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2005 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 2006 if (error != 0) 2007 return error; 2008 2009 data = htole32(ic->ic_fragthreshold); 2010 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2011 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data, 0); 2012 if (error != 0) 2013 return error; 2014 2015 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2016 power.mode = IWI_MODE_11B; 2017 power.nchan = 11; 2018 for (i = 0; i < 11; i++) { 2019 power.chan[i].chan = i + 1; 2020 power.chan[i].power = IWI_TXPOWER_MAX; 2021 } 2022 DPRINTF(("Setting .11b channels tx power\n")); 2023 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2024 0); 2025 if (error != 0) 2026 return error; 2027 2028 power.mode = IWI_MODE_11G; 2029 DPRINTF(("Setting .11g channels tx power\n")); 2030 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2031 0); 2032 if (error != 0) 2033 return error; 2034 } 2035 2036 rs.mode = IWI_MODE_11G; 2037 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2038 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2039 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2040 rs.nrates); 2041 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2042 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2043 if (error != 0) 2044 return error; 2045 2046 rs.mode = IWI_MODE_11A; 2047 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2048 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2049 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2050 rs.nrates); 2051 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2052 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2053 if (error != 0) 2054 return error; 2055 2056 data = htole32(arc4random()); 2057 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2058 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0); 2059 if (error != 0) 2060 return error; 2061 2062 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2063 wk = &ic->ic_crypto.cs_nw_keys[i]; 2064 2065 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2066 wepkey.idx = i; 2067 wepkey.len = wk->wk_keylen; 2068 memset(wepkey.key, 0, sizeof wepkey.key); 2069 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2070 DPRINTF(("Setting wep key index %u len %u\n", 2071 wepkey.idx, wepkey.len)); 2072 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2073 sizeof wepkey, 0); 2074 if (error != 0) 2075 return error; 2076 } 2077 2078 /* Enable adapter */ 2079 DPRINTF(("Enabling adapter\n")); 2080 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 2081 } 2082 2083 static int 2084 iwi_set_chan(struct iwi_softc *sc, struct ieee80211_channel *chan) 2085 { 2086 struct ieee80211com *ic = &sc->sc_ic; 2087 struct iwi_scan scan; 2088 2089 (void)memset(&scan, 0, sizeof scan); 2090 scan.type = IWI_SCAN_TYPE_PASSIVE; 2091 scan.dwelltime = htole16(2000); 2092 scan.channels[0] = 1 | (IEEE80211_IS_CHAN_5GHZ(chan) ? IWI_CHAN_5GHZ : 2093 IWI_CHAN_2GHZ); 2094 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2095 2096 DPRINTF(("Setting channel to %u\n", ieee80211_chan2ieee(ic, chan))); 2097 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 2098 } 2099 2100 static int 2101 iwi_scan(struct iwi_softc *sc) 2102 { 2103 struct ieee80211com *ic = &sc->sc_ic; 2104 struct iwi_scan scan; 2105 u_int8_t *p; 2106 int i, count; 2107 2108 (void)memset(&scan, 0, sizeof scan); 2109 scan.type = IWI_SCAN_TYPE_BROADCAST; 2110 scan.dwelltime = htole16(sc->dwelltime); 2111 2112 p = scan.channels; 2113 count = 0; 2114 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2115 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) && 2116 isset(ic->ic_chan_active, i)) { 2117 *++p = i; 2118 count++; 2119 } 2120 } 2121 *(p - count) = IWI_CHAN_5GHZ | count; 2122 2123 count = 0; 2124 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2125 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) && 2126 isset(ic->ic_chan_active, i)) { 2127 *++p = i; 2128 count++; 2129 } 2130 } 2131 *(p - count) = IWI_CHAN_2GHZ | count; 2132 2133 DPRINTF(("Start scanning\n")); 2134 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 2135 } 2136 2137 static int 2138 iwi_auth_and_assoc(struct iwi_softc *sc) 2139 { 2140 struct ieee80211com *ic = &sc->sc_ic; 2141 struct ieee80211_node *ni = ic->ic_bss; 2142 struct ifnet *ifp = &sc->sc_if; 2143 struct iwi_configuration config; 2144 struct iwi_associate assoc; 2145 struct iwi_rateset rs; 2146 u_int16_t capinfo; 2147 u_int32_t data; 2148 int error; 2149 2150 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2151 memset(&config, 0, sizeof config); 2152 config.bluetooth_coexistence = sc->bluetooth; 2153 config.antenna = sc->antenna; 2154 config.multicast_enabled = 1; 2155 config.use_protection = 1; 2156 config.answer_pbreq = 2157 (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2158 config.disable_unicast_decryption = 1; 2159 config.disable_multicast_decryption = 1; 2160 DPRINTF(("Configuring adapter\n")); 2161 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, 2162 sizeof config, 1); 2163 if (error != 0) 2164 return error; 2165 } 2166 2167 #ifdef IWI_DEBUG 2168 if (iwi_debug > 0) { 2169 printf("Setting ESSID to "); 2170 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2171 printf("\n"); 2172 } 2173 #endif 2174 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 2175 if (error != 0) 2176 return error; 2177 2178 /* the rate set has already been "negociated" */ 2179 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2180 IWI_MODE_11G; 2181 rs.type = IWI_RATESET_TYPE_NEGOCIATED; 2182 rs.nrates = ni->ni_rates.rs_nrates; 2183 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2184 DPRINTF(("Setting negociated rates (%u)\n", rs.nrates)); 2185 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 2186 if (error != 0) 2187 return error; 2188 2189 if (ic->ic_opt_ie != NULL) { 2190 DPRINTF(("Setting optional IE (len=%u)\n", ic->ic_opt_ie_len)); 2191 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ic->ic_opt_ie, 2192 ic->ic_opt_ie_len, 1); 2193 if (error != 0) 2194 return error; 2195 } 2196 data = htole32(ni->ni_rssi); 2197 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 2198 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 2199 if (error != 0) 2200 return error; 2201 2202 memset(&assoc, 0, sizeof assoc); 2203 assoc.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2204 IWI_MODE_11G; 2205 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2206 if (ni->ni_authmode == IEEE80211_AUTH_SHARED) 2207 assoc.auth = (ic->ic_crypto.cs_def_txkey << 4) | IWI_AUTH_SHARED; 2208 if (ic->ic_opt_ie != NULL) 2209 assoc.policy |= htole16(IWI_POLICY_OPTIE); 2210 memcpy(assoc.tstamp, ni->ni_tstamp.data, 8); 2211 2212 if (ic->ic_opmode == IEEE80211_M_IBSS) 2213 capinfo = IEEE80211_CAPINFO_IBSS; 2214 else 2215 capinfo = IEEE80211_CAPINFO_ESS; 2216 if (ic->ic_flags & IEEE80211_F_PRIVACY) 2217 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2218 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2219 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2220 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2221 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2222 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2223 assoc.capinfo = htole16(capinfo); 2224 2225 assoc.lintval = htole16(ic->ic_lintval); 2226 assoc.intval = htole16(ni->ni_intval); 2227 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 2228 if (ic->ic_opmode == IEEE80211_M_IBSS) 2229 IEEE80211_ADDR_COPY(assoc.dst, ifp->if_broadcastaddr); 2230 else 2231 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 2232 DPRINTF(("Trying to associate to %s channel %u auth %u\n", 2233 ether_sprintf(assoc.bssid), assoc.chan, assoc.auth)); 2234 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 2235 } 2236 2237 static int 2238 iwi_init(struct ifnet *ifp) 2239 { 2240 struct iwi_softc *sc = ifp->if_softc; 2241 struct ieee80211com *ic = &sc->sc_ic; 2242 struct iwi_firmware *fw = &sc->fw; 2243 int i, error; 2244 2245 /* exit immediately if firmware has not been ioctl'd */ 2246 if (!(sc->flags & IWI_FLAG_FW_CACHED)) { 2247 if (!(sc->flags & IWI_FLAG_FW_WARNED)) 2248 aprint_error("%s: Firmware not loaded\n", 2249 sc->sc_dev.dv_xname); 2250 sc->flags |= IWI_FLAG_FW_WARNED; 2251 ifp->if_flags &= ~IFF_UP; 2252 return EIO; 2253 } 2254 2255 iwi_stop(ifp, 0); 2256 2257 if ((error = iwi_reset(sc)) != 0) { 2258 aprint_error("%s: could not reset adapter\n", 2259 sc->sc_dev.dv_xname); 2260 goto fail; 2261 } 2262 2263 if ((error = iwi_load_firmware(sc, fw->boot, fw->boot_size)) != 0) { 2264 aprint_error("%s: could not load boot firmware\n", 2265 sc->sc_dev.dv_xname); 2266 goto fail; 2267 } 2268 2269 if ((error = iwi_load_ucode(sc, fw->ucode, fw->ucode_size)) != 0) { 2270 aprint_error("%s: could not load microcode\n", 2271 sc->sc_dev.dv_xname); 2272 goto fail; 2273 } 2274 2275 iwi_stop_master(sc); 2276 2277 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.desc_map->dm_segs[0].ds_addr); 2278 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 2279 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 2280 2281 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2282 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq.count); 2283 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq.cur); 2284 2285 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2286 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq.count); 2287 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq.cur); 2288 2289 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2290 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq.count); 2291 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq.cur); 2292 2293 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2294 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq.count); 2295 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq.cur); 2296 2297 for (i = 0; i < sc->rxq.count; i++) 2298 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, 2299 sc->rxq.data[i].map->dm_segs[0].ds_addr); 2300 2301 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count -1); 2302 2303 if ((error = iwi_load_firmware(sc, fw->main, fw->main_size)) != 0) { 2304 aprint_error("%s: could not load main firmware\n", 2305 sc->sc_dev.dv_xname); 2306 goto fail; 2307 } 2308 2309 sc->flags |= IWI_FLAG_FW_INITED; 2310 2311 if ((error = iwi_config(sc)) != 0) { 2312 aprint_error("%s: device configuration failed\n", 2313 sc->sc_dev.dv_xname); 2314 goto fail; 2315 } 2316 2317 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2318 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2319 else 2320 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2321 2322 ifp->if_flags &= ~IFF_OACTIVE; 2323 ifp->if_flags |= IFF_RUNNING; 2324 2325 return 0; 2326 2327 fail: ifp->if_flags &= ~IFF_UP; 2328 iwi_stop(ifp, 0); 2329 2330 return error; 2331 } 2332 2333 static void 2334 iwi_stop(struct ifnet *ifp, int disable) 2335 { 2336 struct iwi_softc *sc = ifp->if_softc; 2337 struct ieee80211com *ic = &sc->sc_ic; 2338 2339 iwi_stop_master(sc); 2340 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2341 2342 /* reset rings */ 2343 iwi_reset_cmd_ring(sc, &sc->cmdq); 2344 iwi_reset_tx_ring(sc, &sc->txq); 2345 iwi_reset_rx_ring(sc, &sc->rxq); 2346 2347 ifp->if_timer = 0; 2348 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2349 2350 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2351 } 2352
Indexes created Fri Oct 03 02:09:57 GMT 2025