if_iwi.c revision 1.27
1 /* $NetBSD: if_iwi.c,v 1.27 2005/09/25 15:18:21 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 1.27 2005/09/25 15:18:21 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 #ifdef IWI_DEBUG 82 #define DPRINTF(x) if (iwi_debug > 0) printf x 83 #define DPRINTFN(n, x) if (iwi_debug >= (n)) printf x 84 int iwi_debug = 4; 85 #else 86 #define DPRINTF(x) 87 #define DPRINTFN(n, x) 88 #endif 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 uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_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_notif *); 120 static void iwi_rx_intr(struct iwi_softc *); 121 static void iwi_tx_intr(struct iwi_softc *); 122 static int iwi_intr(void *); 123 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t, int); 124 static int iwi_tx_start(struct ifnet *, struct mbuf *, struct ieee80211_node *); 125 static void iwi_start(struct ifnet *); 126 static void iwi_watchdog(struct ifnet *); 127 static int iwi_get_table0(struct iwi_softc *, uint32_t *); 128 static int iwi_get_radio(struct iwi_softc *, int *); 129 static int iwi_ioctl(struct ifnet *, u_long, caddr_t); 130 static void iwi_stop_master(struct iwi_softc *); 131 static int iwi_reset(struct iwi_softc *); 132 static int iwi_load_ucode(struct iwi_softc *, void *, int); 133 static int iwi_load_firmware(struct iwi_softc *, void *, int); 134 static int iwi_cache_firmware(struct iwi_softc *, void *); 135 static void iwi_free_firmware(struct iwi_softc *); 136 static int iwi_config(struct iwi_softc *); 137 static int iwi_set_chan(struct iwi_softc *, struct ieee80211_channel *); 138 static int iwi_scan(struct iwi_softc *); 139 static int iwi_auth_and_assoc(struct iwi_softc *); 140 static int iwi_init(struct ifnet *); 141 static void iwi_stop(struct ifnet *, int); 142 143 /* 144 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 145 */ 146 static const struct ieee80211_rateset iwi_rateset_11a = 147 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 148 149 static const struct ieee80211_rateset iwi_rateset_11b = 150 { 4, { 2, 4, 11, 22 } }; 151 152 static const struct ieee80211_rateset iwi_rateset_11g = 153 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 154 155 static __inline uint8_t 156 MEM_READ_1(struct iwi_softc *sc, uint32_t addr) 157 { 158 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 159 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 160 } 161 162 static __inline uint32_t 163 MEM_READ_4(struct iwi_softc *sc, uint32_t addr) 164 { 165 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 166 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 167 } 168 169 CFATTACH_DECL(iwi, sizeof (struct iwi_softc), iwi_match, iwi_attach, 170 iwi_detach, NULL); 171 172 static int 173 iwi_match(struct device *parent, struct cfdata *match, void *aux) 174 { 175 struct pci_attach_args *pa = aux; 176 177 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 178 return 0; 179 180 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2200BG || 181 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2225BG || 182 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 183 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) 184 return 1; 185 186 return 0; 187 } 188 189 /* Base Address Register */ 190 #define IWI_PCI_BAR0 0x10 191 192 static void 193 iwi_attach(struct device *parent, struct device *self, void *aux) 194 { 195 struct iwi_softc *sc = (struct iwi_softc *)self; 196 struct ieee80211com *ic = &sc->sc_ic; 197 struct ifnet *ifp = &sc->sc_if; 198 struct pci_attach_args *pa = aux; 199 const char *intrstr; 200 char devinfo[256]; 201 bus_space_tag_t memt; 202 bus_space_handle_t memh; 203 bus_addr_t base; 204 pci_intr_handle_t ih; 205 pcireg_t data; 206 uint16_t val; 207 int error, revision, i; 208 209 sc->sc_pct = pa->pa_pc; 210 sc->sc_pcitag = pa->pa_tag; 211 212 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 213 revision = PCI_REVISION(pa->pa_class); 214 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 215 216 /* clear device specific PCI configuration register 0x41 */ 217 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 218 data &= ~0x0000ff00; 219 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 220 221 /* enable bus-mastering */ 222 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 223 data |= PCI_COMMAND_MASTER_ENABLE; 224 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 225 226 /* map the register window */ 227 error = pci_mapreg_map(pa, IWI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 228 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, &base, &sc->sc_sz); 229 if (error != 0) { 230 aprint_error("%s: could not map memory space\n", 231 sc->sc_dev.dv_xname); 232 return; 233 } 234 235 sc->sc_st = memt; 236 sc->sc_sh = memh; 237 sc->sc_dmat = pa->pa_dmat; 238 239 /* disable interrupts */ 240 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 241 242 if (pci_intr_map(pa, &ih) != 0) { 243 aprint_error("%s: could not map interrupt\n", 244 sc->sc_dev.dv_xname); 245 return; 246 } 247 248 intrstr = pci_intr_string(sc->sc_pct, ih); 249 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, iwi_intr, sc); 250 if (sc->sc_ih == NULL) { 251 aprint_error("%s: could not establish interrupt", 252 sc->sc_dev.dv_xname); 253 if (intrstr != NULL) 254 aprint_error(" at %s", intrstr); 255 aprint_error("\n"); 256 return; 257 } 258 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 259 260 if (iwi_reset(sc) != 0) { 261 aprint_error("%s: could not reset adapter\n", 262 sc->sc_dev.dv_xname); 263 return; 264 } 265 266 /* 267 * Allocate rings. 268 */ 269 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) { 270 aprint_error("%s: could not allocate command ring\n", 271 sc->sc_dev.dv_xname); 272 goto fail; 273 } 274 275 if (iwi_alloc_tx_ring(sc, &sc->txq, IWI_TX_RING_COUNT) != 0) { 276 aprint_error("%s: could not allocate Tx ring\n", 277 sc->sc_dev.dv_xname); 278 goto fail; 279 } 280 281 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) { 282 aprint_error("%s: could not allocate Rx ring\n", 283 sc->sc_dev.dv_xname); 284 goto fail; 285 } 286 287 ic->ic_ifp = ifp; 288 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 289 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 290 ic->ic_state = IEEE80211_S_INIT; 291 292 /* set device capabilities */ 293 ic->ic_caps = IEEE80211_C_WPA | IEEE80211_C_PMGT | IEEE80211_C_TXPMGT | 294 IEEE80211_C_SHPREAMBLE | IEEE80211_C_MONITOR; 295 296 /* read MAC address from EEPROM */ 297 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 298 ic->ic_myaddr[0] = val >> 8; 299 ic->ic_myaddr[1] = val & 0xff; 300 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 301 ic->ic_myaddr[2] = val >> 8; 302 ic->ic_myaddr[3] = val & 0xff; 303 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 304 ic->ic_myaddr[4] = val >> 8; 305 ic->ic_myaddr[5] = val & 0xff; 306 307 aprint_normal("%s: 802.11 address %s\n", sc->sc_dev.dv_xname, 308 ether_sprintf(ic->ic_myaddr)); 309 310 311 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 312 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) { 313 /* set supported .11a rates (2915ABG only) */ 314 ic->ic_sup_rates[IEEE80211_MODE_11A] = iwi_rateset_11a; 315 316 /* set supported .11a channels */ 317 for (i = 36; i <= 64; i += 4) { 318 ic->ic_channels[i].ic_freq = 319 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 320 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 321 } 322 for (i = 149; i <= 165; i += 4) { 323 ic->ic_channels[i].ic_freq = 324 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 325 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 326 } 327 } 328 329 /* set supported .11b and .11g rates */ 330 ic->ic_sup_rates[IEEE80211_MODE_11B] = iwi_rateset_11b; 331 ic->ic_sup_rates[IEEE80211_MODE_11G] = iwi_rateset_11g; 332 333 /* set supported .11b and .11g channels (1 through 14) */ 334 for (i = 1; i <= 14; i++) { 335 ic->ic_channels[i].ic_freq = 336 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 337 ic->ic_channels[i].ic_flags = 338 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 339 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 340 } 341 342 ifp->if_softc = sc; 343 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 344 ifp->if_init = iwi_init; 345 ifp->if_stop = iwi_stop; 346 ifp->if_ioctl = iwi_ioctl; 347 ifp->if_start = iwi_start; 348 ifp->if_watchdog = iwi_watchdog; 349 IFQ_SET_READY(&ifp->if_snd); 350 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 351 352 if_attach(ifp); 353 ieee80211_ifattach(ic); 354 /* override state transition machine */ 355 sc->sc_newstate = ic->ic_newstate; 356 ic->ic_newstate = iwi_newstate; 357 ieee80211_media_init(ic, iwi_media_change, iwi_media_status); 358 359 #if NBPFILTER > 0 360 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 361 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf); 362 363 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 364 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 365 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT); 366 367 sc->sc_txtap_len = sizeof sc->sc_txtapu; 368 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 369 sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT); 370 #endif 371 372 /* 373 * Make sure the interface is shutdown during reboot. 374 */ 375 sc->sc_sdhook = shutdownhook_establish(iwi_shutdown, sc); 376 if (sc->sc_sdhook == NULL) 377 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 378 sc->sc_dev.dv_xname); 379 sc->sc_powerhook = powerhook_establish(iwi_powerhook, sc); 380 if (sc->sc_powerhook == NULL) 381 printf("%s: WARNING: unable to establish power hook\n", 382 sc->sc_dev.dv_xname); 383 384 ieee80211_announce(ic); 385 /* 386 * Add a few sysctl knobs. 387 * XXX: Not yet. 388 */ 389 sc->dwelltime = 100; 390 sc->bluetooth = 1; 391 sc->antenna = 0; 392 393 return; 394 395 fail: iwi_detach(self, 0); 396 } 397 398 static int 399 iwi_detach(struct device* self, int flags) 400 { 401 struct iwi_softc *sc = (struct iwi_softc *)self; 402 struct ifnet *ifp = &sc->sc_if; 403 404 iwi_stop(ifp, 1); 405 iwi_free_firmware(sc); 406 407 #if NBPFILTER > 0 408 if (ifp != NULL) 409 bpfdetach(ifp); 410 #endif 411 ieee80211_ifdetach(&sc->sc_ic); 412 if (ifp != NULL) 413 if_detach(ifp); 414 415 iwi_free_cmd_ring(sc, &sc->cmdq); 416 iwi_free_tx_ring(sc, &sc->txq); 417 iwi_free_rx_ring(sc, &sc->rxq); 418 419 if (sc->sc_ih != NULL) { 420 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 421 sc->sc_ih = NULL; 422 } 423 424 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 425 426 powerhook_disestablish(sc->sc_powerhook); 427 shutdownhook_disestablish(sc->sc_sdhook); 428 429 return 0; 430 } 431 432 static int 433 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, 434 int count) 435 { 436 int error, nsegs; 437 438 ring->count = count; 439 ring->queued = 0; 440 ring->cur = ring->next = 0; 441 442 /* 443 * Allocate and map command ring 444 */ 445 error = bus_dmamap_create(sc->sc_dmat, 446 IWI_CMD_DESC_SIZE * count, 1, 447 IWI_CMD_DESC_SIZE * count, 0, 448 BUS_DMA_NOWAIT, &ring->desc_map); 449 if (error != 0) { 450 aprint_error("%s: could not create command ring DMA map\n", 451 sc->sc_dev.dv_xname); 452 goto fail; 453 } 454 455 error = bus_dmamem_alloc(sc->sc_dmat, 456 IWI_CMD_DESC_SIZE * count, PAGE_SIZE, 0, 457 &sc->cmdq.desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 458 if (error != 0) { 459 aprint_error("%s: could not allocate command ring DMA memory\n", 460 sc->sc_dev.dv_xname); 461 goto fail; 462 } 463 464 error = bus_dmamem_map(sc->sc_dmat, &sc->cmdq.desc_seg, nsegs, 465 IWI_CMD_DESC_SIZE * count, 466 (caddr_t *)&sc->cmdq.desc, BUS_DMA_NOWAIT); 467 if (error != 0) { 468 aprint_error("%s: could not map command ring DMA memory\n", 469 sc->sc_dev.dv_xname); 470 goto fail; 471 } 472 473 error = bus_dmamap_load(sc->sc_dmat, sc->cmdq.desc_map, sc->cmdq.desc, 474 IWI_CMD_DESC_SIZE * count, NULL, 475 BUS_DMA_NOWAIT); 476 if (error != 0) { 477 aprint_error("%s: could not load command ring DMA map\n", 478 sc->sc_dev.dv_xname); 479 goto fail; 480 } 481 482 memset(sc->cmdq.desc, 0, 483 IWI_CMD_DESC_SIZE * count); 484 485 return 0; 486 487 fail: iwi_free_cmd_ring(sc, ring); 488 return error; 489 } 490 491 static void 492 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 493 { 494 ring->queued = 0; 495 ring->cur = ring->next = 0; 496 } 497 498 static void 499 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 500 { 501 if (ring->desc_map != NULL) { 502 if (ring->desc != NULL) { 503 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 504 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 505 IWI_CMD_DESC_SIZE * ring->count); 506 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 507 } 508 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 509 } 510 } 511 512 static int 513 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, 514 int count) 515 { 516 int i, error, nsegs; 517 518 ring->count = count; 519 ring->queued = 0; 520 ring->cur = ring->next = 0; 521 522 /* 523 * Allocate and map Tx ring 524 */ 525 error = bus_dmamap_create(sc->sc_dmat, 526 IWI_TX_DESC_SIZE * count, 1, 527 IWI_TX_DESC_SIZE * count, 0, BUS_DMA_NOWAIT, 528 &ring->desc_map); 529 if (error != 0) { 530 aprint_error("%s: could not create tx ring DMA map\n", 531 sc->sc_dev.dv_xname); 532 goto fail; 533 } 534 535 error = bus_dmamem_alloc(sc->sc_dmat, 536 IWI_TX_DESC_SIZE * count, PAGE_SIZE, 0, 537 &ring->desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 538 if (error != 0) { 539 aprint_error("%s: could not allocate tx ring DMA memory\n", 540 sc->sc_dev.dv_xname); 541 goto fail; 542 } 543 544 error = bus_dmamem_map(sc->sc_dmat, &ring->desc_seg, nsegs, 545 IWI_TX_DESC_SIZE * count, 546 (caddr_t *)&ring->desc, BUS_DMA_NOWAIT); 547 if (error != 0) { 548 aprint_error("%s: could not map tx ring DMA memory\n", 549 sc->sc_dev.dv_xname); 550 goto fail; 551 } 552 553 error = bus_dmamap_load(sc->sc_dmat, ring->desc_map, ring->desc, 554 IWI_TX_DESC_SIZE * count, NULL, 555 BUS_DMA_NOWAIT); 556 if (error != 0) { 557 aprint_error("%s: could not load tx ring DMA map\n", 558 sc->sc_dev.dv_xname); 559 goto fail; 560 } 561 562 memset(ring->desc, 0, IWI_TX_DESC_SIZE * count); 563 564 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 565 M_NOWAIT | M_ZERO); 566 if (ring->data == NULL) { 567 aprint_error("%s: could not allocate soft data\n", 568 sc->sc_dev.dv_xname); 569 error = ENOMEM; 570 goto fail; 571 } 572 573 /* 574 * Allocate Tx buffers DMA maps 575 */ 576 for (i = 0; i < count; i++) { 577 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, IWI_MAX_NSEG, 578 MCLBYTES, 0, BUS_DMA_NOWAIT, &ring->data[i].map); 579 if (error != 0) { 580 aprint_error("%s: could not create tx buf DMA map", 581 sc->sc_dev.dv_xname); 582 goto fail; 583 } 584 } 585 return 0; 586 587 fail: iwi_free_tx_ring(sc, ring); 588 return error; 589 } 590 591 static void 592 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 593 { 594 struct iwi_tx_data *data; 595 int i; 596 597 for (i = 0; i < ring->count; i++) { 598 data = &ring->data[i]; 599 600 if (data->m != NULL) { 601 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 602 MCLBYTES, BUS_DMASYNC_POSTWRITE); 603 bus_dmamap_unload(sc->sc_dmat, data->map); 604 m_freem(data->m); 605 data->m = NULL; 606 } 607 608 if (data->ni != NULL) { 609 ieee80211_free_node(data->ni); 610 data->ni = NULL; 611 } 612 } 613 614 ring->queued = 0; 615 ring->cur = ring->next = 0; 616 } 617 618 static void 619 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 620 { 621 int i; 622 623 if (ring->desc_map != NULL) { 624 if (ring->desc != NULL) { 625 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 626 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 627 IWI_TX_DESC_SIZE * ring->count); 628 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 629 } 630 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 631 } 632 633 for (i = 0; i < ring->count; i++) { 634 if (ring->data[i].m != NULL) { 635 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 636 m_freem(ring->data[i].m); 637 } 638 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 639 } 640 } 641 642 static int 643 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, 644 int count) 645 { 646 int i, error; 647 648 ring->count = count; 649 ring->cur = 0; 650 651 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 652 M_NOWAIT | M_ZERO); 653 if (ring->data == NULL) { 654 aprint_error("%s: could not allocate soft data\n", 655 sc->sc_dev.dv_xname); 656 error = ENOMEM; 657 goto fail; 658 } 659 660 /* 661 * Allocate and map Rx buffers 662 */ 663 for (i = 0; i < count; i++) { 664 665 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 666 0, BUS_DMA_NOWAIT, &ring->data[i].map); 667 if (error != 0) { 668 aprint_error("%s: could not create rx buf DMA map", 669 sc->sc_dev.dv_xname); 670 goto fail; 671 } 672 673 MGETHDR(ring->data[i].m, M_DONTWAIT, MT_DATA); 674 if (ring->data[i].m == NULL) { 675 aprint_error("%s: could not allocate rx mbuf\n", 676 sc->sc_dev.dv_xname); 677 error = ENOMEM; 678 goto fail; 679 } 680 681 MCLGET(ring->data[i].m, M_DONTWAIT); 682 if (!(ring->data[i].m->m_flags & M_EXT)) { 683 m_freem(ring->data[i].m); 684 aprint_error("%s: could not allocate rx mbuf cluster\n", 685 sc->sc_dev.dv_xname); 686 error = ENOMEM; 687 goto fail; 688 } 689 690 error = bus_dmamap_load(sc->sc_dmat, ring->data[i].map, 691 mtod(ring->data[i].m, void *), MCLBYTES, NULL, 692 BUS_DMA_NOWAIT); 693 if (error != 0) { 694 aprint_error("%s: could not load rx buffer DMA map\n", 695 sc->sc_dev.dv_xname); 696 goto fail; 697 } 698 } 699 700 return 0; 701 702 fail: iwi_free_rx_ring(sc, ring); 703 return error; 704 } 705 706 static void 707 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 708 { 709 ring->cur = 0; 710 } 711 712 static void 713 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 714 { 715 int i; 716 717 for (i = 0; i < ring->count; i++) { 718 if (ring->data[i].m != NULL) { 719 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 720 m_freem(ring->data[i].m); 721 } 722 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 723 } 724 } 725 726 static void 727 iwi_shutdown(void *arg) 728 { 729 struct iwi_softc *sc = (struct iwi_softc *)arg; 730 struct ifnet *ifp = sc->sc_ic.ic_ifp; 731 732 iwi_stop(ifp, 1); 733 } 734 735 static int 736 iwi_suspend(struct iwi_softc *sc) 737 { 738 struct ifnet *ifp = sc->sc_ic.ic_ifp; 739 740 iwi_stop(ifp, 1); 741 742 return 0; 743 } 744 745 static int 746 iwi_resume(struct iwi_softc *sc) 747 { 748 struct ifnet *ifp = sc->sc_ic.ic_ifp; 749 pcireg_t data; 750 751 /* clear device specific PCI configuration register 0x41 */ 752 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 753 data &= ~0x0000ff00; 754 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 755 756 if (ifp->if_flags & IFF_UP) { 757 iwi_init(ifp); 758 if (ifp->if_flags & IFF_RUNNING) 759 iwi_start(ifp); 760 } 761 762 return 0; 763 } 764 765 static void 766 iwi_powerhook(int why, void *arg) 767 { 768 struct iwi_softc *sc = arg; 769 int s; 770 771 s = splnet(); 772 switch (why) { 773 case PWR_SUSPEND: 774 case PWR_STANDBY: 775 iwi_suspend(sc); 776 break; 777 case PWR_RESUME: 778 iwi_resume(sc); 779 break; 780 case PWR_SOFTSUSPEND: 781 case PWR_SOFTSTANDBY: 782 case PWR_SOFTRESUME: 783 break; 784 } 785 splx(s); 786 } 787 788 static int 789 iwi_media_change(struct ifnet *ifp) 790 { 791 int error; 792 793 error = ieee80211_media_change(ifp); 794 if (error != ENETRESET) 795 return error; 796 797 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 798 iwi_init(ifp); 799 800 return 0; 801 } 802 803 /* 804 * The firmware automaticly adapt the transmit speed. We report the current 805 * transmit speed here. 806 */ 807 static void 808 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 809 { 810 struct iwi_softc *sc = ifp->if_softc; 811 struct ieee80211com *ic = &sc->sc_ic; 812 #define N(a) (sizeof (a) / sizeof (a[0])) 813 static const struct { 814 uint32_t val; 815 int rate; 816 } rates[] = { 817 { IWI_RATE_DS1, 2 }, 818 { IWI_RATE_DS2, 4 }, 819 { IWI_RATE_DS5, 11 }, 820 { IWI_RATE_DS11, 22 }, 821 { IWI_RATE_OFDM6, 12 }, 822 { IWI_RATE_OFDM9, 18 }, 823 { IWI_RATE_OFDM12, 24 }, 824 { IWI_RATE_OFDM18, 36 }, 825 { IWI_RATE_OFDM24, 48 }, 826 { IWI_RATE_OFDM36, 72 }, 827 { IWI_RATE_OFDM48, 96 }, 828 { IWI_RATE_OFDM54, 108 }, 829 }; 830 uint32_t val; 831 int rate, i; 832 833 imr->ifm_status = IFM_AVALID; 834 imr->ifm_active = IFM_IEEE80211; 835 if (ic->ic_state == IEEE80211_S_RUN) 836 imr->ifm_status |= IFM_ACTIVE; 837 838 /* read current transmission rate from adapter */ 839 val = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 840 841 /* convert rate to 802.11 rate */ 842 for (i = 0; i < N(rates) && rates[i].val != val; i++); 843 rate = (i < N(rates)) ? rates[i].rate : 0; 844 845 imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode); 846 switch (ic->ic_opmode) { 847 case IEEE80211_M_STA: 848 break; 849 850 case IEEE80211_M_IBSS: 851 imr->ifm_active |= IFM_IEEE80211_ADHOC; 852 break; 853 854 case IEEE80211_M_MONITOR: 855 imr->ifm_active |= IFM_IEEE80211_MONITOR; 856 break; 857 858 case IEEE80211_M_AHDEMO: 859 case IEEE80211_M_HOSTAP: 860 /* should not get there */ 861 break; 862 } 863 #undef N 864 } 865 866 static int 867 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 868 { 869 struct iwi_softc *sc = ic->ic_ifp->if_softc; 870 871 switch (nstate) { 872 case IEEE80211_S_SCAN: 873 if (sc->flags & IWI_FLAG_SCANNING) 874 break; 875 876 ieee80211_node_table_reset(&ic->ic_scan); 877 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 878 sc->flags |= IWI_FLAG_SCANNING; 879 iwi_scan(sc); 880 break; 881 882 case IEEE80211_S_AUTH: 883 iwi_auth_and_assoc(sc); 884 break; 885 886 case IEEE80211_S_RUN: 887 if (ic->ic_opmode == IEEE80211_M_IBSS) 888 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1); 889 else if (ic->ic_opmode == IEEE80211_M_MONITOR) 890 iwi_set_chan(sc, ic->ic_ibss_chan); 891 892 return (*sc->sc_newstate)(ic, nstate, 893 IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 894 895 case IEEE80211_S_ASSOC: 896 break; 897 898 case IEEE80211_S_INIT: 899 sc->flags &= ~IWI_FLAG_SCANNING; 900 return (*sc->sc_newstate)(ic, nstate, arg); 901 } 902 903 ic->ic_state = nstate; 904 return 0; 905 } 906 907 /* 908 * Read 16 bits at address 'addr' from the serial EEPROM. 909 */ 910 static uint16_t 911 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 912 { 913 uint32_t tmp; 914 uint16_t val; 915 int n; 916 917 /* Clock C once before the first command */ 918 IWI_EEPROM_CTL(sc, 0); 919 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 920 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 921 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 922 923 /* Write start bit (1) */ 924 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 925 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 926 927 /* Write READ opcode (10) */ 928 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 929 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 930 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 931 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 932 933 /* Write address A7-A0 */ 934 for (n = 7; n >= 0; n--) { 935 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 936 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 937 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 938 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 939 } 940 941 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 942 943 /* Read data Q15-Q0 */ 944 val = 0; 945 for (n = 15; n >= 0; n--) { 946 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 947 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 948 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 949 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 950 } 951 952 IWI_EEPROM_CTL(sc, 0); 953 954 /* Clear Chip Select and clock C */ 955 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 956 IWI_EEPROM_CTL(sc, 0); 957 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 958 959 return be16toh(val); 960 } 961 962 /* 963 * XXX: Hack to set the current channel to the value advertised in beacons or 964 * probe responses. Only used during AP detection. 965 */ 966 static void 967 iwi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 968 { 969 struct ieee80211_frame *wh; 970 uint8_t subtype; 971 uint8_t *frm, *efrm; 972 973 wh = mtod(m, struct ieee80211_frame *); 974 975 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 976 return; 977 978 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 979 980 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 981 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 982 return; 983 984 frm = (uint8_t *)(wh + 1); 985 efrm = mtod(m, uint8_t *) + m->m_len; 986 987 frm += 12; /* skip tstamp, bintval and capinfo fields */ 988 while (frm < efrm) { 989 if (*frm == IEEE80211_ELEMID_DSPARMS) 990 #if IEEE80211_CHAN_MAX < 255 991 if (frm[2] <= IEEE80211_CHAN_MAX) 992 #endif 993 ic->ic_bss->ni_chan = &ic->ic_channels[frm[2]]; 994 995 frm += frm[1] + 2; 996 } 997 } 998 999 static void 1000 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 1001 struct iwi_frame *frame) 1002 { 1003 struct ieee80211com *ic = &sc->sc_ic; 1004 struct ifnet *ifp = ic->ic_ifp; 1005 struct mbuf *m; 1006 struct ieee80211_frame *wh; 1007 struct ieee80211_node *ni; 1008 int error; 1009 1010 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u\n", 1011 le16toh(frame->len), frame->chan, frame->rssi_dbm)); 1012 1013 bus_dmamap_sync(sc->sc_dmat, data->map, sizeof (struct iwi_hdr), 1014 sizeof (struct iwi_frame) + le16toh(frame->len), 1015 BUS_DMASYNC_POSTREAD); 1016 1017 if (le16toh(frame->len) < sizeof (struct ieee80211_frame) || 1018 le16toh(frame->len) > MCLBYTES) { 1019 DPRINTF(("%s: bad frame length\n", sc->sc_dev.dv_xname)); 1020 ifp->if_ierrors++; 1021 return; 1022 } 1023 1024 bus_dmamap_unload(sc->sc_dmat, data->map); 1025 1026 /* Finalize mbuf */ 1027 m = data->m; 1028 m->m_pkthdr.rcvif = ifp; 1029 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1030 sizeof (struct iwi_frame) + le16toh(frame->len); 1031 1032 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1033 1034 if (ic->ic_state == IEEE80211_S_SCAN) 1035 iwi_fix_channel(ic, m); 1036 1037 #if NBPFILTER > 0 1038 if (sc->sc_drvbpf != NULL) { 1039 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1040 1041 tap->wr_flags = 0; 1042 tap->wr_rate = frame->rate; 1043 tap->wr_chan_freq = 1044 htole16(ic->ic_channels[frame->chan].ic_freq); 1045 tap->wr_chan_flags = 1046 htole16(ic->ic_channels[frame->chan].ic_flags); 1047 tap->wr_antsignal = frame->signal; 1048 tap->wr_antenna = frame->antenna; 1049 1050 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1051 } 1052 #endif 1053 1054 wh = mtod(m, struct ieee80211_frame *); 1055 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1056 1057 /* Send the frame to the upper layer */ 1058 ieee80211_input(ic, m, ni, frame->rssi_dbm, 0); 1059 1060 /* node is no longer needed */ 1061 ieee80211_free_node(ni); 1062 1063 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 1064 if (data->m == NULL) { 1065 aprint_error("%s: could not allocate rx mbuf\n", 1066 sc->sc_dev.dv_xname); 1067 return; 1068 } 1069 1070 MCLGET(data->m, M_DONTWAIT); 1071 if (!(data->m->m_flags & M_EXT)) { 1072 aprint_error("%s: could not allocate rx mbuf cluster\n", 1073 sc->sc_dev.dv_xname); 1074 m_freem(data->m); 1075 data->m = NULL; 1076 return; 1077 } 1078 1079 error = bus_dmamap_load(sc->sc_dmat, data->map, mtod(data->m, void *), 1080 MCLBYTES, NULL, BUS_DMA_NOWAIT); 1081 if (error != 0) { 1082 aprint_error("%s: could not load rx buf DMA map\n", 1083 sc->sc_dev.dv_xname); 1084 m_freem(data->m); 1085 data->m = NULL; 1086 return; 1087 } 1088 1089 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, data->map->dm_segs[0].ds_addr); 1090 } 1091 1092 static void 1093 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif) 1094 { 1095 struct ieee80211com *ic = &sc->sc_ic; 1096 struct iwi_notif_scan_channel *chan; 1097 struct iwi_notif_scan_complete *scan; 1098 struct iwi_notif_authentication *auth; 1099 struct iwi_notif_association *assoc; 1100 1101 switch (notif->type) { 1102 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1103 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1104 1105 DPRINTFN(2, ("Finished scanning channel (%u)\n", chan->nchan)); 1106 break; 1107 1108 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1109 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1110 1111 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1112 scan->status)); 1113 1114 /* monitor mode uses scan to set the channel ... */ 1115 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1116 sc->flags &= ~IWI_FLAG_SCANNING; 1117 ieee80211_end_scan(ic); 1118 } else 1119 iwi_set_chan(sc, ic->ic_ibss_chan); 1120 break; 1121 1122 case IWI_NOTIF_TYPE_AUTHENTICATION: 1123 auth = (struct iwi_notif_authentication *)(notif + 1); 1124 1125 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 1126 1127 switch (auth->state) { 1128 case IWI_AUTHENTICATED: 1129 ieee80211_node_authorize(ic, ic->ic_bss); 1130 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1131 break; 1132 1133 case IWI_DEAUTHENTICATED: 1134 break; 1135 1136 default: 1137 aprint_error("%s: unknown authentication state %u\n", 1138 sc->sc_dev.dv_xname, auth->state); 1139 } 1140 break; 1141 1142 case IWI_NOTIF_TYPE_ASSOCIATION: 1143 assoc = (struct iwi_notif_association *)(notif + 1); 1144 1145 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 1146 assoc->status)); 1147 1148 switch (assoc->state) { 1149 case IWI_AUTHENTICATED: 1150 /* re-association, do nothing */ 1151 break; 1152 1153 case IWI_ASSOCIATED: 1154 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1155 break; 1156 1157 case IWI_DEASSOCIATED: 1158 ieee80211_begin_scan(ic, 1); 1159 break; 1160 1161 default: 1162 aprint_error("%s: unknown association state %u\n", 1163 sc->sc_dev.dv_xname, assoc->state); 1164 } 1165 break; 1166 1167 case IWI_NOTIF_TYPE_CALIBRATION: 1168 case IWI_NOTIF_TYPE_BEACON: 1169 case IWI_NOTIF_TYPE_NOISE: 1170 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1171 break; 1172 1173 default: 1174 aprint_error("%s: unknown notification type %u\n", 1175 sc->sc_dev.dv_xname, notif->type); 1176 } 1177 } 1178 1179 static void 1180 iwi_rx_intr(struct iwi_softc *sc) 1181 { 1182 struct iwi_rx_data *data; 1183 struct iwi_hdr *hdr; 1184 uint32_t hw; 1185 1186 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1187 1188 for (; sc->rxq.cur != hw;) { 1189 data = &sc->rxq.data[sc->rxq.cur]; 1190 1191 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1192 MCLBYTES, BUS_DMASYNC_POSTREAD); 1193 1194 hdr = mtod(data->m, struct iwi_hdr *); 1195 1196 switch (hdr->type) { 1197 case IWI_HDR_TYPE_FRAME: 1198 iwi_frame_intr(sc, data, sc->rxq.cur, 1199 (struct iwi_frame *)(hdr + 1)); 1200 break; 1201 1202 case IWI_HDR_TYPE_NOTIF: 1203 iwi_notification_intr(sc, 1204 (struct iwi_notif *)(hdr + 1)); 1205 break; 1206 1207 default: 1208 aprint_error("%s: unknown hdr type %u\n", 1209 sc->sc_dev.dv_xname, hdr->type); 1210 } 1211 1212 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1213 1214 sc->rxq.cur = (sc->rxq.cur + 1) % sc->rxq.count; 1215 } 1216 1217 1218 /* Tell the firmware what we have processed */ 1219 hw = (hw == 0) ? sc->rxq.count - 1 : hw - 1; 1220 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1221 } 1222 1223 static void 1224 iwi_tx_intr(struct iwi_softc *sc) 1225 { 1226 struct ifnet *ifp = &sc->sc_if; 1227 struct iwi_tx_data *data; 1228 uint32_t hw; 1229 1230 hw = CSR_READ_4(sc, IWI_CSR_TX1_RIDX); 1231 1232 for (; sc->txq.next != hw;) { 1233 data = &sc->txq.data[sc->txq.next]; 1234 1235 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1236 MCLBYTES, BUS_DMASYNC_POSTWRITE); 1237 bus_dmamap_unload(sc->sc_dmat, data->map); 1238 m_freem(data->m); 1239 data->m = NULL; 1240 ieee80211_free_node(data->ni); 1241 data->ni = NULL; 1242 1243 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next)); 1244 1245 ifp->if_opackets++; 1246 1247 sc->txq.queued--; 1248 sc->txq.next = (sc->txq.next + 1) % sc->txq.count; 1249 } 1250 1251 sc->sc_tx_timer = 0; 1252 ifp->if_flags &= ~IFF_OACTIVE; 1253 1254 /* Call start() since some buffer descriptors have been released */ 1255 (*ifp->if_start)(ifp); 1256 } 1257 1258 static int 1259 iwi_intr(void *arg) 1260 { 1261 struct iwi_softc *sc = arg; 1262 uint32_t r; 1263 1264 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1265 return 0; 1266 1267 /* Disable interrupts */ 1268 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1269 1270 if (r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)) { 1271 aprint_error("%s: fatal error\n", sc->sc_dev.dv_xname); 1272 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1273 iwi_stop(&sc->sc_if, 1); 1274 } 1275 1276 if (r & IWI_INTR_FW_INITED) { 1277 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1278 wakeup(sc); 1279 } 1280 1281 if (r & IWI_INTR_RADIO_OFF) { 1282 DPRINTF(("radio transmitter off\n")); 1283 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1284 iwi_stop(&sc->sc_if, 1); 1285 } 1286 1287 if (r & IWI_INTR_RX_DONE) 1288 iwi_rx_intr(sc); 1289 1290 if (r & IWI_INTR_CMD_DONE) 1291 wakeup(sc); 1292 1293 if (r & IWI_INTR_TX1_DONE) 1294 iwi_tx_intr(sc); 1295 1296 /* Acknowledge interrupts */ 1297 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1298 1299 /* Re-enable interrupts */ 1300 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1301 1302 return 1; 1303 } 1304 1305 static int 1306 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len, 1307 int async) 1308 { 1309 struct iwi_cmd_desc *desc; 1310 1311 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1312 1313 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1314 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1315 desc->type = type; 1316 desc->len = len; 1317 memcpy(desc->data, data, len); 1318 1319 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 1320 sc->cmdq.cur * IWI_CMD_DESC_SIZE, 1321 IWI_CMD_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1322 1323 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur, 1324 type, len)); 1325 1326 sc->cmdq.cur = (sc->cmdq.cur + 1) % sc->cmdq.count; 1327 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1328 1329 return async ? 0 : tsleep(sc, 0, "iwicmd", hz); 1330 } 1331 1332 static int 1333 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1334 { 1335 struct iwi_softc *sc = ifp->if_softc; 1336 struct ieee80211com *ic = &sc->sc_ic; 1337 struct ieee80211_frame wh; 1338 struct ieee80211_key *k; 1339 struct iwi_tx_data *data; 1340 struct iwi_tx_desc *desc; 1341 struct mbuf *mnew; 1342 int error, i; 1343 1344 (void)memcpy(&wh, mtod(m0, struct ieee80211_frame *), sizeof(wh)); 1345 if (wh.i_fc[1] & IEEE80211_FC1_WEP) { 1346 k = ieee80211_crypto_encap(ic, ni, m0); 1347 if (k == NULL) { 1348 m_freem(m0); 1349 return ENOBUFS; 1350 } 1351 } 1352 1353 #if NBPFILTER > 0 1354 if (sc->sc_drvbpf != NULL) { 1355 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1356 1357 tap->wt_flags = 0; 1358 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1359 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1360 1361 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1362 } 1363 #endif 1364 1365 data = &sc->txq.data[sc->txq.cur]; 1366 desc = &sc->txq.desc[sc->txq.cur]; 1367 1368 /* trim IEEE802.11 header */ 1369 m_adj(m0, sizeof (struct ieee80211_frame)); 1370 1371 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, BUS_DMA_NOWAIT); 1372 if (error != 0 && error != EFBIG) { 1373 aprint_error("%s: could not map mbuf (error %d)\n", 1374 sc->sc_dev.dv_xname, error); 1375 m_freem(m0); 1376 return error; 1377 } 1378 if (error != 0) { 1379 /* too many fragments, linearize */ 1380 1381 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1382 if (mnew == NULL) { 1383 m_freem(m0); 1384 return ENOMEM; 1385 } 1386 1387 M_COPY_PKTHDR(mnew, m0); 1388 MCLGET(mnew, M_DONTWAIT); 1389 if (!(mnew->m_flags & M_EXT)) { 1390 m_freem(m0); 1391 m_freem(mnew); 1392 return ENOMEM; 1393 } 1394 1395 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, caddr_t)); 1396 m_freem(m0); 1397 mnew->m_len = mnew->m_pkthdr.len; 1398 m0 = mnew; 1399 1400 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1401 BUS_DMA_NOWAIT); 1402 if (error != 0) { 1403 aprint_error("%s: could not map mbuf (error %d)\n", 1404 sc->sc_dev.dv_xname, error); 1405 m_freem(m0); 1406 return error; 1407 } 1408 } 1409 1410 data->m = m0; 1411 data->ni = ni; 1412 1413 desc->hdr.type = IWI_HDR_TYPE_DATA; 1414 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1415 desc->cmd = IWI_DATA_CMD_TX; 1416 desc->len = htole16(m0->m_pkthdr.len); 1417 (void)memcpy(&desc->wh, &wh, sizeof (struct ieee80211_frame)); 1418 desc->flags = 0; 1419 if (!IEEE80211_IS_MULTICAST(wh.i_addr1)) 1420 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1421 1422 #if 0 1423 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 1424 wh.i_fc[1] |= IEEE80211_FC1_WEP; 1425 desc->wep_txkey = ic->ic_crypto.cs_def_txkey; 1426 } else 1427 #endif 1428 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1429 1430 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1431 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1432 1433 desc->nseg = htole32(data->map->dm_nsegs); 1434 for (i = 0; i < data->map->dm_nsegs; i++) { 1435 desc->seg_addr[i] = htole32(data->map->dm_segs[i].ds_addr); 1436 desc->seg_len[i] = htole32(data->map->dm_segs[i].ds_len); 1437 } 1438 1439 bus_dmamap_sync(sc->sc_dmat, sc->txq.desc_map, 1440 sc->txq.cur * IWI_TX_DESC_SIZE, 1441 IWI_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1442 1443 bus_dmamap_sync(sc->sc_dmat, data->map, 0, MCLBYTES, 1444 BUS_DMASYNC_PREWRITE); 1445 1446 DPRINTFN(5, ("sending data frame len=%u nseg=%u\n", 1447 desc->len, desc->nseg)); 1448 1449 /* Inform firmware about this new packet */ 1450 sc->txq.queued++; 1451 sc->txq.cur = (sc->txq.cur + 1) % sc->txq.count; 1452 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq.cur); 1453 1454 return 0; 1455 } 1456 1457 static void 1458 iwi_start(struct ifnet *ifp) 1459 { 1460 struct iwi_softc *sc = ifp->if_softc; 1461 struct ieee80211com *ic = &sc->sc_ic; 1462 struct mbuf *m0; 1463 struct ether_header *eh; 1464 struct ieee80211_node *ni; 1465 1466 if (ic->ic_state != IEEE80211_S_RUN) 1467 return; 1468 1469 for (;;) { 1470 IF_DEQUEUE(&ifp->if_snd, m0); 1471 if (m0 == NULL) 1472 break; 1473 1474 if (sc->txq.queued >= sc->txq.count - 4) { 1475 IF_PREPEND(&ifp->if_snd, m0); 1476 ifp->if_flags |= IFF_OACTIVE; 1477 break; 1478 } 1479 1480 if (m0->m_len < sizeof (struct ether_header) && 1481 (m0 = m_pullup(m0, sizeof (struct ether_header))) == NULL) 1482 continue; 1483 1484 #if NBPFILTER > 0 1485 if (ifp->if_bpf != NULL) 1486 bpf_mtap(ifp->if_bpf, m0); 1487 #endif 1488 1489 eh = mtod(m0, struct ether_header *); 1490 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1491 if (ni == NULL) { 1492 m_freem(m0); 1493 continue; 1494 } 1495 1496 m0 = ieee80211_encap(ic, m0, ni); 1497 if (m0 == NULL) { 1498 ieee80211_free_node(ni); 1499 continue; 1500 } 1501 1502 #if NBPFILTER > 0 1503 if (ic->ic_rawbpf != NULL) 1504 bpf_mtap(ic->ic_rawbpf, m0); 1505 #endif 1506 1507 if (iwi_tx_start(ifp, m0, ni) != 0) { 1508 ieee80211_free_node(ni); 1509 ifp->if_oerrors++; 1510 break; 1511 } 1512 1513 /* start watchdog timer */ 1514 sc->sc_tx_timer = 5; 1515 ifp->if_timer = 1; 1516 } 1517 } 1518 1519 static void 1520 iwi_watchdog(struct ifnet *ifp) 1521 { 1522 struct iwi_softc *sc = ifp->if_softc; 1523 1524 ifp->if_timer = 0; 1525 1526 if (sc->sc_tx_timer > 0) { 1527 if (--sc->sc_tx_timer == 0) { 1528 aprint_error("%s: device timeout\n", 1529 sc->sc_dev.dv_xname); 1530 ifp->if_oerrors++; 1531 ifp->if_flags &= ~IFF_UP; 1532 iwi_stop(ifp, 1); 1533 return; 1534 } 1535 ifp->if_timer = 1; 1536 } 1537 1538 ieee80211_watchdog(&sc->sc_ic); 1539 } 1540 1541 static int 1542 iwi_get_table0(struct iwi_softc *sc, uint32_t *tbl) 1543 { 1544 uint32_t size, buf[128]; 1545 1546 if (!(sc->flags & IWI_FLAG_FW_INITED)) { 1547 memset(buf, 0, sizeof buf); 1548 return copyout(buf, tbl, sizeof buf); 1549 } 1550 1551 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 1552 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 1553 1554 return copyout(buf, tbl, sizeof buf); 1555 } 1556 1557 static int 1558 iwi_get_radio(struct iwi_softc *sc, int *ret) 1559 { 1560 int val; 1561 1562 val = (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1 : 0; 1563 return copyout(&val, ret, sizeof val); 1564 } 1565 1566 static int 1567 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1568 { 1569 struct iwi_softc *sc = ifp->if_softc; 1570 struct ifreq *ifr; 1571 int s, error = 0; 1572 1573 s = splnet(); 1574 1575 switch (cmd) { 1576 case SIOCSIFFLAGS: 1577 if (ifp->if_flags & IFF_UP) { 1578 if (!(ifp->if_flags & IFF_RUNNING)) 1579 iwi_init(ifp); 1580 } else { 1581 if (ifp->if_flags & IFF_RUNNING) 1582 iwi_stop(ifp, 1); 1583 } 1584 break; 1585 1586 case SIOCGTABLE0: 1587 ifr = (struct ifreq *)data; 1588 error = iwi_get_table0(sc, (uint32_t *)ifr->ifr_data); 1589 break; 1590 1591 case SIOCGRADIO: 1592 ifr = (struct ifreq *)data; 1593 error = iwi_get_radio(sc, (int *)ifr->ifr_data); 1594 break; 1595 1596 case SIOCSLOADFW: 1597 /* only super-user can do that! */ 1598 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1599 break; 1600 1601 ifr = (struct ifreq *)data; 1602 error = iwi_cache_firmware(sc, ifr->ifr_data); 1603 break; 1604 1605 case SIOCSKILLFW: 1606 /* only super-user can do that! */ 1607 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1608 break; 1609 1610 ifp->if_flags &= ~IFF_UP; 1611 iwi_stop(ifp, 1); 1612 iwi_free_firmware(sc); 1613 break; 1614 1615 default: 1616 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 1617 } 1618 1619 if (error == ENETRESET && cmd != SIOCADDMULTI) { 1620 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1621 (IFF_UP | IFF_RUNNING)) 1622 iwi_init(ifp); 1623 error = 0; 1624 } 1625 1626 splx(s); 1627 return error; 1628 } 1629 1630 static void 1631 iwi_stop_master(struct iwi_softc *sc) 1632 { 1633 int ntries; 1634 1635 /* Disable interrupts */ 1636 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1637 1638 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1639 for (ntries = 0; ntries < 5; ntries++) { 1640 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1641 break; 1642 DELAY(10); 1643 } 1644 if (ntries == 5) 1645 aprint_error("%s: timeout waiting for master\n", 1646 sc->sc_dev.dv_xname); 1647 1648 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1649 IWI_RST_PRINCETON_RESET); 1650 1651 sc->flags &= ~IWI_FLAG_FW_INITED; 1652 } 1653 1654 static int 1655 iwi_reset(struct iwi_softc *sc) 1656 { 1657 int i, ntries; 1658 1659 iwi_stop_master(sc); 1660 1661 /* Move adapter to D0 state */ 1662 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1663 IWI_CTL_INIT); 1664 1665 /* Initialize Phase-Locked Level (PLL) */ 1666 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1667 1668 /* Wait for clock stabilization */ 1669 for (ntries = 0; ntries < 1000; ntries++) { 1670 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1671 break; 1672 DELAY(200); 1673 } 1674 if (ntries == 1000) { 1675 aprint_error("%s: timeout waiting for clock stabilization\n", 1676 sc->sc_dev.dv_xname); 1677 return EIO; 1678 } 1679 1680 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1681 IWI_RST_SW_RESET); 1682 1683 DELAY(10); 1684 1685 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1686 IWI_CTL_INIT); 1687 1688 /* Clear NIC memory */ 1689 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1690 for (i = 0; i < 0xc000; i++) 1691 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1692 1693 return 0; 1694 } 1695 1696 static int 1697 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size) 1698 { 1699 uint16_t *w; 1700 int ntries, i; 1701 1702 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1703 IWI_RST_STOP_MASTER); 1704 for (ntries = 0; ntries < 5; ntries++) { 1705 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1706 break; 1707 DELAY(10); 1708 } 1709 if (ntries == 5) { 1710 aprint_error("%s: timeout waiting for master\n", 1711 sc->sc_dev.dv_xname); 1712 return EIO; 1713 } 1714 1715 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1716 DELAY(5000); 1717 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1718 ~IWI_RST_PRINCETON_RESET); 1719 DELAY(5000); 1720 MEM_WRITE_4(sc, 0x3000e0, 0); 1721 DELAY(1000); 1722 MEM_WRITE_4(sc, 0x300004, 1); 1723 DELAY(1000); 1724 MEM_WRITE_4(sc, 0x300004, 0); 1725 DELAY(1000); 1726 MEM_WRITE_1(sc, 0x200000, 0x00); 1727 MEM_WRITE_1(sc, 0x200000, 0x40); 1728 DELAY(1000); 1729 1730 /* Adapter is buggy, we must set the address for each word */ 1731 for (w = uc; size > 0; w++, size -= 2) 1732 MEM_WRITE_2(sc, 0x200010, *w); 1733 1734 MEM_WRITE_1(sc, 0x200000, 0x00); 1735 MEM_WRITE_1(sc, 0x200000, 0x80); 1736 1737 /* Wait until we get a response in the uc queue */ 1738 for (ntries = 0; ntries < 100; ntries++) { 1739 if (MEM_READ_1(sc, 0x200000) & 1) 1740 break; 1741 DELAY(100); 1742 } 1743 if (ntries == 100) { 1744 aprint_error("%s: timeout waiting for ucode to initialize\n", 1745 sc->sc_dev.dv_xname); 1746 return EIO; 1747 } 1748 1749 /* Empty the uc queue or the firmware will not initialize properly */ 1750 for (i = 0; i < 7; i++) 1751 MEM_READ_4(sc, 0x200004); 1752 1753 MEM_WRITE_1(sc, 0x200000, 0x00); 1754 1755 return 0; 1756 } 1757 1758 /* macro to handle unaligned little endian data in firmware image */ 1759 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1760 static int 1761 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size) 1762 { 1763 bus_dmamap_t map; 1764 u_char *p, *end; 1765 uint32_t sentinel, ctl, sum; 1766 uint32_t cs, sl, cd, cl; 1767 int ntries, nsegs, error; 1768 int sn; 1769 1770 1771 nsegs = (size + PAGE_SIZE - 1) / PAGE_SIZE; 1772 1773 /* Create a DMA map memory for the firmware image */ 1774 error = bus_dmamap_create(sc->sc_dmat, size, nsegs, size, 0, 1775 BUS_DMA_NOWAIT, &map); 1776 if (error != 0) { 1777 aprint_error("%s: could not create firmware DMA map\n", 1778 sc->sc_dev.dv_xname); 1779 goto fail1; 1780 } 1781 1782 error = bus_dmamap_load(sc->sc_dmat, map, fw, size, NULL, 1783 BUS_DMA_NOWAIT | BUS_DMA_WRITE); 1784 if (error != 0) { 1785 aprint_error("%s: could not load fw dma map(%d)\n", 1786 sc->sc_dev.dv_xname, error); 1787 goto fail2; 1788 } 1789 1790 /* Make sure the adapter will get up-to-date values */ 1791 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 1792 1793 /* Tell the adapter where the command blocks are stored */ 1794 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 1795 1796 /* 1797 * Store command blocks into adapter's internal memory using register 1798 * indirections. The adapter will read the firmware image through DMA 1799 * using information stored in command blocks. 1800 */ 1801 p = fw; 1802 end = p + size; 1803 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 1804 1805 sn = 0; 1806 sl = cl = 0; 1807 cs = cd = 0; 1808 while (p < end) { 1809 if (sl == 0) { 1810 cs = map->dm_segs[sn].ds_addr; 1811 sl = map->dm_segs[sn].ds_len; 1812 sn++; 1813 } 1814 if (cl == 0) { 1815 cd = GETLE32(p); p += 4; cs += 4; sl -= 4; 1816 cl = GETLE32(p); p += 4; cs += 4; sl -= 4; 1817 } 1818 while (sl > 0 && cl > 0) { 1819 int len = min(cl, sl); 1820 1821 sl -= len; 1822 cl -= len; 1823 p += len; 1824 1825 while (len > 0) { 1826 int mlen = min(len, IWI_CB_MAXDATALEN); 1827 1828 ctl = IWI_CB_DEFAULT_CTL | mlen; 1829 sum = ctl ^ cs ^ cd; 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, cs); 1834 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, cd); 1835 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 1836 1837 cs += mlen; 1838 cd += mlen; 1839 len -= mlen; 1840 } 1841 } 1842 } 1843 1844 /* Write a fictive final command block (sentinel) */ 1845 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 1846 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1847 1848 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1849 ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER)); 1850 1851 /* Tell the adapter to start processing command blocks */ 1852 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 1853 1854 /* Wait until the adapter has processed all command blocks */ 1855 for (ntries = 0; ntries < 400; ntries++) { 1856 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 1857 break; 1858 DELAY(100); 1859 } 1860 if (ntries == 400) { 1861 aprint_error("%s: timeout processing cb\n", 1862 sc->sc_dev.dv_xname); 1863 error = EIO; 1864 goto fail2; 1865 } 1866 1867 /* We're done with command blocks processing */ 1868 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 1869 1870 /* Allow interrupts so we know when the firmware is inited */ 1871 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1872 1873 /* Tell the adapter to initialize the firmware */ 1874 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 1875 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1876 IWI_CTL_ALLOW_STANDBY); 1877 1878 /* Wait at most one second for firmware initialization to complete */ 1879 if ((error = tsleep(sc, 0, "iwiinit", hz)) != 0) { 1880 aprint_error("%s: timeout waiting for firmware initialization " 1881 "to complete\n", sc->sc_dev.dv_xname); 1882 goto fail3; 1883 } 1884 1885 fail3: 1886 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 1887 bus_dmamap_unload(sc->sc_dmat, map); 1888 fail2: 1889 bus_dmamap_destroy(sc->sc_dmat, map); 1890 1891 fail1: 1892 return error; 1893 } 1894 1895 /* 1896 * Store firmware into kernel memory so we can download it when we need to, 1897 * e.g when the adapter wakes up from suspend mode. 1898 */ 1899 static int 1900 iwi_cache_firmware(struct iwi_softc *sc, void *data) 1901 { 1902 struct iwi_firmware *kfw = &sc->fw; 1903 struct iwi_firmware ufw; 1904 int error; 1905 1906 iwi_free_firmware(sc); 1907 1908 if ((error = copyin(data, &ufw, sizeof ufw)) != 0) 1909 goto fail1; 1910 1911 kfw->boot_size = ufw.boot_size; 1912 kfw->ucode_size = ufw.ucode_size; 1913 kfw->main_size = ufw.main_size; 1914 1915 kfw->boot = malloc(kfw->boot_size, M_DEVBUF, M_NOWAIT); 1916 if (kfw->boot == NULL) { 1917 error = ENOMEM; 1918 goto fail1; 1919 } 1920 1921 kfw->ucode = malloc(kfw->ucode_size, M_DEVBUF, M_NOWAIT); 1922 if (kfw->ucode == NULL) { 1923 error = ENOMEM; 1924 goto fail2; 1925 } 1926 1927 kfw->main = malloc(kfw->main_size, M_DEVBUF, M_NOWAIT); 1928 if (kfw->main == NULL) { 1929 error = ENOMEM; 1930 goto fail3; 1931 } 1932 1933 if ((error = copyin(ufw.boot, kfw->boot, kfw->boot_size)) != 0) 1934 goto fail4; 1935 1936 if ((error = copyin(ufw.ucode, kfw->ucode, kfw->ucode_size)) != 0) 1937 goto fail4; 1938 1939 if ((error = copyin(ufw.main, kfw->main, kfw->main_size)) != 0) 1940 goto fail4; 1941 1942 DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n", 1943 kfw->boot_size, kfw->ucode_size, kfw->main_size)); 1944 1945 sc->flags |= IWI_FLAG_FW_CACHED; 1946 1947 return 0; 1948 1949 fail4: free(kfw->boot, M_DEVBUF); 1950 fail3: free(kfw->ucode, M_DEVBUF); 1951 fail2: free(kfw->main, M_DEVBUF); 1952 fail1: 1953 return error; 1954 } 1955 1956 static void 1957 iwi_free_firmware(struct iwi_softc *sc) 1958 { 1959 if (!(sc->flags & IWI_FLAG_FW_CACHED)) 1960 return; 1961 1962 free(sc->fw.boot, M_DEVBUF); 1963 free(sc->fw.ucode, M_DEVBUF); 1964 free(sc->fw.main, M_DEVBUF); 1965 1966 sc->flags &= ~IWI_FLAG_FW_CACHED; 1967 } 1968 1969 static int 1970 iwi_config(struct iwi_softc *sc) 1971 { 1972 struct ieee80211com *ic = &sc->sc_ic; 1973 struct ifnet *ifp = &sc->sc_if; 1974 struct iwi_configuration config; 1975 struct iwi_rateset rs; 1976 struct iwi_txpower power; 1977 struct ieee80211_key *wk; 1978 struct iwi_wep_key wepkey; 1979 uint32_t data; 1980 int error, i; 1981 1982 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1983 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 1984 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 1985 IEEE80211_ADDR_LEN, 0); 1986 if (error != 0) 1987 return error; 1988 1989 memset(&config, 0, sizeof config); 1990 config.bluetooth_coexistence = sc->bluetooth; 1991 config.antenna = sc->antenna; 1992 config.multicast_enabled = 1; 1993 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 1994 config.disable_unicast_decryption = 1; 1995 config.disable_multicast_decryption = 1; 1996 DPRINTF(("Configuring adapter\n")); 1997 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, sizeof config, 1998 0); 1999 if (error != 0) 2000 return error; 2001 2002 data = htole32(IWI_POWER_MODE_CAM); 2003 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2004 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 2005 if (error != 0) 2006 return error; 2007 2008 data = htole32(ic->ic_rtsthreshold); 2009 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2010 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 2011 if (error != 0) 2012 return error; 2013 2014 data = htole32(ic->ic_fragthreshold); 2015 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2016 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data, 0); 2017 if (error != 0) 2018 return error; 2019 2020 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2021 power.mode = IWI_MODE_11B; 2022 power.nchan = 11; 2023 for (i = 0; i < 11; i++) { 2024 power.chan[i].chan = i + 1; 2025 power.chan[i].power = IWI_TXPOWER_MAX; 2026 } 2027 DPRINTF(("Setting .11b channels tx power\n")); 2028 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2029 0); 2030 if (error != 0) 2031 return error; 2032 2033 power.mode = IWI_MODE_11G; 2034 DPRINTF(("Setting .11g channels tx power\n")); 2035 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2036 0); 2037 if (error != 0) 2038 return error; 2039 } 2040 2041 rs.mode = IWI_MODE_11G; 2042 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2043 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2044 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2045 rs.nrates); 2046 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2047 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2048 if (error != 0) 2049 return error; 2050 2051 rs.mode = IWI_MODE_11A; 2052 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2053 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2054 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2055 rs.nrates); 2056 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2057 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2058 if (error != 0) 2059 return error; 2060 2061 data = htole32(arc4random()); 2062 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2063 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0); 2064 if (error != 0) 2065 return error; 2066 2067 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2068 wk = &ic->ic_crypto.cs_nw_keys[i]; 2069 2070 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2071 wepkey.idx = i; 2072 wepkey.len = wk->wk_keylen; 2073 memset(wepkey.key, 0, sizeof wepkey.key); 2074 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2075 DPRINTF(("Setting wep key index %u len %u\n", 2076 wepkey.idx, wepkey.len)); 2077 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2078 sizeof wepkey, 0); 2079 if (error != 0) 2080 return error; 2081 } 2082 2083 /* Enable adapter */ 2084 DPRINTF(("Enabling adapter\n")); 2085 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 2086 } 2087 2088 static int 2089 iwi_set_chan(struct iwi_softc *sc, struct ieee80211_channel *chan) 2090 { 2091 struct ieee80211com *ic = &sc->sc_ic; 2092 struct iwi_scan scan; 2093 2094 (void)memset(&scan, 0, sizeof scan); 2095 scan.type = IWI_SCAN_TYPE_PASSIVE; 2096 scan.dwelltime = htole16(2000); 2097 scan.channels[0] = 1 | (IEEE80211_IS_CHAN_5GHZ(chan) ? IWI_CHAN_5GHZ : 2098 IWI_CHAN_2GHZ); 2099 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2100 2101 DPRINTF(("Setting channel to %u\n", ieee80211_chan2ieee(ic, chan))); 2102 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 2103 } 2104 2105 static int 2106 iwi_scan(struct iwi_softc *sc) 2107 { 2108 struct ieee80211com *ic = &sc->sc_ic; 2109 struct iwi_scan_v2 scan; 2110 uint32_t type; 2111 uint8_t *p; 2112 int i, count, idx; 2113 2114 (void)memset(&scan, 0, sizeof scan); 2115 scan.dwelltime[IWI_SCAN_TYPE_ACTIVE_BROADCAST] = 2116 htole16(sc->dwelltime); 2117 scan.dwelltime[IWI_SCAN_TYPE_ACTIVE_BDIRECT] = 2118 htole16(sc->dwelltime); 2119 2120 /* tell the firmware about the desired essid */ 2121 if (ic->ic_des_esslen) { 2122 int error; 2123 2124 DPRINTF(("%s: Setting adapter desired ESSID to %s\n", 2125 __func__, ic->ic_des_essid)); 2126 2127 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, 2128 ic->ic_des_essid, ic->ic_des_esslen, 1); 2129 if (error) 2130 return error; 2131 2132 type = IWI_SCAN_TYPE_ACTIVE_BDIRECT; 2133 } else { 2134 type = IWI_SCAN_TYPE_ACTIVE_BROADCAST; 2135 } 2136 2137 p = &scan.channels[0]; 2138 count = idx = 0; 2139 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2140 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) && 2141 isset(ic->ic_chan_active, i)) { 2142 *++p = i; 2143 count++; 2144 idx++; 2145 iwi_scan_type_set(scan, idx, type); 2146 } 2147 } 2148 if (count) { 2149 *(p - count) = IWI_CHAN_5GHZ | count; 2150 p++; 2151 } 2152 2153 count = 0; 2154 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2155 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) && 2156 isset(ic->ic_chan_active, i)) { 2157 *++p = i; 2158 count++; 2159 idx++; 2160 iwi_scan_type_set(scan, idx, type); 2161 } 2162 } 2163 *(p - count) = IWI_CHAN_2GHZ | count; 2164 2165 DPRINTF(("Start scanning\n")); 2166 return iwi_cmd(sc, IWI_CMD_SCAN_V2, &scan, sizeof scan, 1); 2167 } 2168 2169 static int 2170 iwi_auth_and_assoc(struct iwi_softc *sc) 2171 { 2172 struct ieee80211com *ic = &sc->sc_ic; 2173 struct ieee80211_node *ni = ic->ic_bss; 2174 struct ifnet *ifp = &sc->sc_if; 2175 struct iwi_configuration config; 2176 struct iwi_associate assoc; 2177 struct iwi_rateset rs; 2178 uint16_t capinfo; 2179 uint32_t data; 2180 int error; 2181 2182 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2183 memset(&config, 0, sizeof config); 2184 config.bluetooth_coexistence = sc->bluetooth; 2185 config.antenna = sc->antenna; 2186 config.multicast_enabled = 1; 2187 config.use_protection = 1; 2188 config.answer_pbreq = 2189 (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2190 config.disable_unicast_decryption = 1; 2191 config.disable_multicast_decryption = 1; 2192 DPRINTF(("Configuring adapter\n")); 2193 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, 2194 sizeof config, 1); 2195 if (error != 0) 2196 return error; 2197 } 2198 2199 #ifdef IWI_DEBUG 2200 if (iwi_debug > 0) { 2201 printf("Setting ESSID to "); 2202 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2203 printf("\n"); 2204 } 2205 #endif 2206 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 2207 if (error != 0) 2208 return error; 2209 2210 /* the rate set has already been "negotiated" */ 2211 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2212 IWI_MODE_11G; 2213 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2214 rs.nrates = ni->ni_rates.rs_nrates; 2215 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2216 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2217 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 2218 if (error != 0) 2219 return error; 2220 2221 if (ic->ic_opt_ie != NULL) { 2222 DPRINTF(("Setting optional IE (len=%u)\n", ic->ic_opt_ie_len)); 2223 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ic->ic_opt_ie, 2224 ic->ic_opt_ie_len, 1); 2225 if (error != 0) 2226 return error; 2227 } 2228 data = htole32(ni->ni_rssi); 2229 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 2230 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 2231 if (error != 0) 2232 return error; 2233 2234 memset(&assoc, 0, sizeof assoc); 2235 assoc.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2236 IWI_MODE_11G; 2237 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2238 if (ni->ni_authmode == IEEE80211_AUTH_SHARED) 2239 assoc.auth = (ic->ic_crypto.cs_def_txkey << 4) | IWI_AUTH_SHARED; 2240 if (ic->ic_opt_ie != NULL) 2241 assoc.policy |= htole16(IWI_POLICY_OPTIE); 2242 memcpy(assoc.tstamp, ni->ni_tstamp.data, 8); 2243 2244 if (ic->ic_opmode == IEEE80211_M_IBSS) 2245 capinfo = IEEE80211_CAPINFO_IBSS; 2246 else 2247 capinfo = IEEE80211_CAPINFO_ESS; 2248 if (ic->ic_flags & IEEE80211_F_PRIVACY) 2249 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2250 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2251 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2252 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2253 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2254 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2255 assoc.capinfo = htole16(capinfo); 2256 2257 assoc.lintval = htole16(ic->ic_lintval); 2258 assoc.intval = htole16(ni->ni_intval); 2259 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 2260 if (ic->ic_opmode == IEEE80211_M_IBSS) 2261 IEEE80211_ADDR_COPY(assoc.dst, ifp->if_broadcastaddr); 2262 else 2263 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 2264 DPRINTF(("Trying to associate to %s channel %u auth %u\n", 2265 ether_sprintf(assoc.bssid), assoc.chan, assoc.auth)); 2266 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 2267 } 2268 2269 static int 2270 iwi_init(struct ifnet *ifp) 2271 { 2272 struct iwi_softc *sc = ifp->if_softc; 2273 struct ieee80211com *ic = &sc->sc_ic; 2274 struct iwi_firmware *fw = &sc->fw; 2275 int i, error; 2276 2277 /* exit immediately if firmware has not been ioctl'd */ 2278 if (!(sc->flags & IWI_FLAG_FW_CACHED)) { 2279 if (!(sc->flags & IWI_FLAG_FW_WARNED)) 2280 aprint_error("%s: Firmware not loaded\n", 2281 sc->sc_dev.dv_xname); 2282 sc->flags |= IWI_FLAG_FW_WARNED; 2283 ifp->if_flags &= ~IFF_UP; 2284 return EIO; 2285 } 2286 2287 iwi_stop(ifp, 0); 2288 2289 if ((error = iwi_reset(sc)) != 0) { 2290 aprint_error("%s: could not reset adapter\n", 2291 sc->sc_dev.dv_xname); 2292 goto fail; 2293 } 2294 2295 if ((error = iwi_load_firmware(sc, fw->boot, fw->boot_size)) != 0) { 2296 aprint_error("%s: could not load boot firmware\n", 2297 sc->sc_dev.dv_xname); 2298 goto fail; 2299 } 2300 2301 if ((error = iwi_load_ucode(sc, fw->ucode, fw->ucode_size)) != 0) { 2302 aprint_error("%s: could not load microcode\n", 2303 sc->sc_dev.dv_xname); 2304 goto fail; 2305 } 2306 2307 iwi_stop_master(sc); 2308 2309 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.desc_map->dm_segs[0].ds_addr); 2310 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 2311 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 2312 2313 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2314 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq.count); 2315 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq.cur); 2316 2317 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2318 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq.count); 2319 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq.cur); 2320 2321 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2322 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq.count); 2323 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq.cur); 2324 2325 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2326 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq.count); 2327 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq.cur); 2328 2329 for (i = 0; i < sc->rxq.count; i++) 2330 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, 2331 sc->rxq.data[i].map->dm_segs[0].ds_addr); 2332 2333 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count -1); 2334 2335 if ((error = iwi_load_firmware(sc, fw->main, fw->main_size)) != 0) { 2336 aprint_error("%s: could not load main firmware\n", 2337 sc->sc_dev.dv_xname); 2338 goto fail; 2339 } 2340 2341 sc->flags |= IWI_FLAG_FW_INITED; 2342 2343 if ((error = iwi_config(sc)) != 0) { 2344 aprint_error("%s: device configuration failed\n", 2345 sc->sc_dev.dv_xname); 2346 goto fail; 2347 } 2348 2349 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2350 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2351 else 2352 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2353 2354 ifp->if_flags &= ~IFF_OACTIVE; 2355 ifp->if_flags |= IFF_RUNNING; 2356 2357 return 0; 2358 2359 fail: ifp->if_flags &= ~IFF_UP; 2360 iwi_stop(ifp, 0); 2361 2362 return error; 2363 } 2364 2365 static void 2366 iwi_stop(struct ifnet *ifp, int disable) 2367 { 2368 struct iwi_softc *sc = ifp->if_softc; 2369 struct ieee80211com *ic = &sc->sc_ic; 2370 2371 iwi_stop_master(sc); 2372 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2373 2374 /* reset rings */ 2375 iwi_reset_cmd_ring(sc, &sc->cmdq); 2376 iwi_reset_tx_ring(sc, &sc->txq); 2377 iwi_reset_rx_ring(sc, &sc->rxq); 2378 2379 ifp->if_timer = 0; 2380 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2381 2382 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2383 } 2384
Indexes created Fri Oct 03 02:09:57 GMT 2025