if_iwi.c revision 1.34
1 /* $NetBSD: if_iwi.c,v 1.34 2005/10/29 10:48:02 scw 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 1.34 2005/10/29 10:48:02 scw 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 struct mbuf * 108 iwi_alloc_rx_buf(struct iwi_softc *sc); 109 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *, 110 int); 111 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 112 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 113 114 static int iwi_media_change(struct ifnet *); 115 static void iwi_media_status(struct ifnet *, struct ifmediareq *); 116 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t); 117 static int iwi_newstate(struct ieee80211com *, enum ieee80211_state, int); 118 static void iwi_fix_channel(struct ieee80211com *, struct mbuf *); 119 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int, 120 struct iwi_frame *); 121 static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *); 122 static void iwi_rx_intr(struct iwi_softc *); 123 static void iwi_tx_intr(struct iwi_softc *); 124 static int iwi_intr(void *); 125 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t, int); 126 static int iwi_tx_start(struct ifnet *, struct mbuf *, struct ieee80211_node *); 127 static void iwi_start(struct ifnet *); 128 static void iwi_watchdog(struct ifnet *); 129 static int iwi_get_table0(struct iwi_softc *, uint32_t *); 130 static int iwi_get_radio(struct iwi_softc *, int *); 131 static int iwi_ioctl(struct ifnet *, u_long, caddr_t); 132 static void iwi_stop_master(struct iwi_softc *); 133 static int iwi_reset(struct iwi_softc *); 134 static int iwi_load_ucode(struct iwi_softc *, void *, int); 135 static int iwi_load_firmware(struct iwi_softc *, void *, int); 136 static int iwi_cache_firmware(struct iwi_softc *, void *); 137 static void iwi_free_firmware(struct iwi_softc *); 138 static int iwi_config(struct iwi_softc *); 139 static int iwi_set_chan(struct iwi_softc *, struct ieee80211_channel *); 140 static int iwi_scan(struct iwi_softc *); 141 static int iwi_auth_and_assoc(struct iwi_softc *); 142 static int iwi_init(struct ifnet *); 143 static void iwi_stop(struct ifnet *, int); 144 145 /* 146 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 147 */ 148 static const struct ieee80211_rateset iwi_rateset_11a = 149 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 150 151 static const struct ieee80211_rateset iwi_rateset_11b = 152 { 4, { 2, 4, 11, 22 } }; 153 154 static const struct ieee80211_rateset iwi_rateset_11g = 155 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 156 157 static __inline uint8_t 158 MEM_READ_1(struct iwi_softc *sc, uint32_t addr) 159 { 160 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 161 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 162 } 163 164 static __inline uint32_t 165 MEM_READ_4(struct iwi_softc *sc, uint32_t addr) 166 { 167 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 168 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 169 } 170 171 CFATTACH_DECL(iwi, sizeof (struct iwi_softc), iwi_match, iwi_attach, 172 iwi_detach, NULL); 173 174 static int 175 iwi_match(struct device *parent, struct cfdata *match, void *aux) 176 { 177 struct pci_attach_args *pa = aux; 178 179 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 180 return 0; 181 182 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2200BG || 183 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2225BG || 184 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 185 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) 186 return 1; 187 188 return 0; 189 } 190 191 /* Base Address Register */ 192 #define IWI_PCI_BAR0 0x10 193 194 static void 195 iwi_attach(struct device *parent, struct device *self, void *aux) 196 { 197 struct iwi_softc *sc = (struct iwi_softc *)self; 198 struct ieee80211com *ic = &sc->sc_ic; 199 struct ifnet *ifp = &sc->sc_if; 200 struct pci_attach_args *pa = aux; 201 const char *intrstr; 202 char devinfo[256]; 203 bus_space_tag_t memt; 204 bus_space_handle_t memh; 205 bus_addr_t base; 206 pci_intr_handle_t ih; 207 pcireg_t data; 208 uint16_t val; 209 int error, revision, i; 210 211 sc->sc_pct = pa->pa_pc; 212 sc->sc_pcitag = pa->pa_tag; 213 214 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 215 revision = PCI_REVISION(pa->pa_class); 216 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 217 218 /* clear device specific PCI configuration register 0x41 */ 219 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 220 data &= ~0x0000ff00; 221 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 222 223 /* enable bus-mastering */ 224 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 225 data |= PCI_COMMAND_MASTER_ENABLE; 226 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 227 228 /* map the register window */ 229 error = pci_mapreg_map(pa, IWI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 230 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, &base, &sc->sc_sz); 231 if (error != 0) { 232 aprint_error("%s: could not map memory space\n", 233 sc->sc_dev.dv_xname); 234 return; 235 } 236 237 sc->sc_st = memt; 238 sc->sc_sh = memh; 239 sc->sc_dmat = pa->pa_dmat; 240 241 /* disable interrupts */ 242 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 243 244 if (pci_intr_map(pa, &ih) != 0) { 245 aprint_error("%s: could not map interrupt\n", 246 sc->sc_dev.dv_xname); 247 return; 248 } 249 250 intrstr = pci_intr_string(sc->sc_pct, ih); 251 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, iwi_intr, sc); 252 if (sc->sc_ih == NULL) { 253 aprint_error("%s: could not establish interrupt", 254 sc->sc_dev.dv_xname); 255 if (intrstr != NULL) 256 aprint_error(" at %s", intrstr); 257 aprint_error("\n"); 258 return; 259 } 260 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 261 262 if (iwi_reset(sc) != 0) { 263 aprint_error("%s: could not reset adapter\n", 264 sc->sc_dev.dv_xname); 265 return; 266 } 267 268 /* 269 * Allocate rings. 270 */ 271 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) { 272 aprint_error("%s: could not allocate command ring\n", 273 sc->sc_dev.dv_xname); 274 goto fail; 275 } 276 277 if (iwi_alloc_tx_ring(sc, &sc->txq, IWI_TX_RING_COUNT) != 0) { 278 aprint_error("%s: could not allocate Tx ring\n", 279 sc->sc_dev.dv_xname); 280 goto fail; 281 } 282 283 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) { 284 aprint_error("%s: could not allocate Rx ring\n", 285 sc->sc_dev.dv_xname); 286 goto fail; 287 } 288 289 ic->ic_ifp = ifp; 290 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 291 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 292 ic->ic_state = IEEE80211_S_INIT; 293 294 /* set device capabilities */ 295 ic->ic_caps = IEEE80211_C_WPA | IEEE80211_C_PMGT | IEEE80211_C_TXPMGT | 296 IEEE80211_C_SHPREAMBLE | IEEE80211_C_MONITOR; 297 298 /* read MAC address from EEPROM */ 299 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 300 ic->ic_myaddr[0] = val & 0xff; 301 ic->ic_myaddr[1] = val >> 8; 302 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 303 ic->ic_myaddr[2] = val & 0xff; 304 ic->ic_myaddr[3] = val >> 8; 305 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 306 ic->ic_myaddr[4] = val & 0xff; 307 ic->ic_myaddr[5] = val >> 8; 308 309 aprint_normal("%s: 802.11 address %s\n", sc->sc_dev.dv_xname, 310 ether_sprintf(ic->ic_myaddr)); 311 312 313 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 314 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) { 315 /* set supported .11a rates (2915ABG only) */ 316 ic->ic_sup_rates[IEEE80211_MODE_11A] = iwi_rateset_11a; 317 318 /* set supported .11a channels */ 319 for (i = 36; i <= 64; i += 4) { 320 ic->ic_channels[i].ic_freq = 321 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 322 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 323 } 324 for (i = 149; i <= 165; i += 4) { 325 ic->ic_channels[i].ic_freq = 326 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 327 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 328 } 329 } 330 331 /* set supported .11b and .11g rates */ 332 ic->ic_sup_rates[IEEE80211_MODE_11B] = iwi_rateset_11b; 333 ic->ic_sup_rates[IEEE80211_MODE_11G] = iwi_rateset_11g; 334 335 /* set supported .11b and .11g channels (1 through 14) */ 336 for (i = 1; i <= 14; i++) { 337 ic->ic_channels[i].ic_freq = 338 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 339 ic->ic_channels[i].ic_flags = 340 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 341 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 342 } 343 344 ifp->if_softc = sc; 345 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 346 ifp->if_init = iwi_init; 347 ifp->if_stop = iwi_stop; 348 ifp->if_ioctl = iwi_ioctl; 349 ifp->if_start = iwi_start; 350 ifp->if_watchdog = iwi_watchdog; 351 IFQ_SET_READY(&ifp->if_snd); 352 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 353 354 if_attach(ifp); 355 ieee80211_ifattach(ic); 356 /* override state transition machine */ 357 sc->sc_newstate = ic->ic_newstate; 358 ic->ic_newstate = iwi_newstate; 359 ieee80211_media_init(ic, iwi_media_change, iwi_media_status); 360 361 #if NBPFILTER > 0 362 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 363 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf); 364 365 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 366 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 367 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT); 368 369 sc->sc_txtap_len = sizeof sc->sc_txtapu; 370 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 371 sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT); 372 #endif 373 374 /* 375 * Make sure the interface is shutdown during reboot. 376 */ 377 sc->sc_sdhook = shutdownhook_establish(iwi_shutdown, sc); 378 if (sc->sc_sdhook == NULL) 379 aprint_error("%s: WARNING: unable to establish shutdown hook\n", 380 sc->sc_dev.dv_xname); 381 sc->sc_powerhook = powerhook_establish(iwi_powerhook, sc); 382 if (sc->sc_powerhook == NULL) 383 printf("%s: WARNING: unable to establish power hook\n", 384 sc->sc_dev.dv_xname); 385 386 ieee80211_announce(ic); 387 /* 388 * Add a few sysctl knobs. 389 * XXX: Not yet. 390 */ 391 sc->dwelltime = 100; 392 sc->bluetooth = 1; 393 sc->antenna = 0; 394 395 return; 396 397 fail: iwi_detach(self, 0); 398 } 399 400 static int 401 iwi_detach(struct device* self, int flags) 402 { 403 struct iwi_softc *sc = (struct iwi_softc *)self; 404 struct ifnet *ifp = &sc->sc_if; 405 406 iwi_stop(ifp, 1); 407 iwi_free_firmware(sc); 408 409 #if NBPFILTER > 0 410 if (ifp != NULL) 411 bpfdetach(ifp); 412 #endif 413 ieee80211_ifdetach(&sc->sc_ic); 414 if (ifp != NULL) 415 if_detach(ifp); 416 417 iwi_free_cmd_ring(sc, &sc->cmdq); 418 iwi_free_tx_ring(sc, &sc->txq); 419 iwi_free_rx_ring(sc, &sc->rxq); 420 421 if (sc->sc_ih != NULL) { 422 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 423 sc->sc_ih = NULL; 424 } 425 426 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 427 428 powerhook_disestablish(sc->sc_powerhook); 429 shutdownhook_disestablish(sc->sc_sdhook); 430 431 return 0; 432 } 433 434 static int 435 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, 436 int count) 437 { 438 int error, nsegs; 439 440 ring->count = count; 441 ring->queued = 0; 442 ring->cur = ring->next = 0; 443 444 /* 445 * Allocate and map command ring 446 */ 447 error = bus_dmamap_create(sc->sc_dmat, 448 IWI_CMD_DESC_SIZE * count, 1, 449 IWI_CMD_DESC_SIZE * count, 0, 450 BUS_DMA_NOWAIT, &ring->desc_map); 451 if (error != 0) { 452 aprint_error("%s: could not create command ring DMA map\n", 453 sc->sc_dev.dv_xname); 454 goto fail; 455 } 456 457 error = bus_dmamem_alloc(sc->sc_dmat, 458 IWI_CMD_DESC_SIZE * count, PAGE_SIZE, 0, 459 &sc->cmdq.desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 460 if (error != 0) { 461 aprint_error("%s: could not allocate command ring DMA memory\n", 462 sc->sc_dev.dv_xname); 463 goto fail; 464 } 465 466 error = bus_dmamem_map(sc->sc_dmat, &sc->cmdq.desc_seg, nsegs, 467 IWI_CMD_DESC_SIZE * count, 468 (caddr_t *)&sc->cmdq.desc, BUS_DMA_NOWAIT); 469 if (error != 0) { 470 aprint_error("%s: could not map command ring DMA memory\n", 471 sc->sc_dev.dv_xname); 472 goto fail; 473 } 474 475 error = bus_dmamap_load(sc->sc_dmat, sc->cmdq.desc_map, sc->cmdq.desc, 476 IWI_CMD_DESC_SIZE * count, NULL, 477 BUS_DMA_NOWAIT); 478 if (error != 0) { 479 aprint_error("%s: could not load command ring DMA map\n", 480 sc->sc_dev.dv_xname); 481 goto fail; 482 } 483 484 memset(sc->cmdq.desc, 0, 485 IWI_CMD_DESC_SIZE * count); 486 487 return 0; 488 489 fail: iwi_free_cmd_ring(sc, ring); 490 return error; 491 } 492 493 static void 494 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 495 { 496 ring->queued = 0; 497 ring->cur = ring->next = 0; 498 } 499 500 static void 501 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 502 { 503 if (ring->desc_map != NULL) { 504 if (ring->desc != NULL) { 505 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 506 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 507 IWI_CMD_DESC_SIZE * ring->count); 508 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 509 } 510 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 511 } 512 } 513 514 static int 515 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, 516 int count) 517 { 518 int i, error, nsegs; 519 520 ring->count = count; 521 ring->queued = 0; 522 ring->cur = ring->next = 0; 523 524 /* 525 * Allocate and map Tx ring 526 */ 527 error = bus_dmamap_create(sc->sc_dmat, 528 IWI_TX_DESC_SIZE * count, 1, 529 IWI_TX_DESC_SIZE * count, 0, BUS_DMA_NOWAIT, 530 &ring->desc_map); 531 if (error != 0) { 532 aprint_error("%s: could not create tx ring DMA map\n", 533 sc->sc_dev.dv_xname); 534 goto fail; 535 } 536 537 error = bus_dmamem_alloc(sc->sc_dmat, 538 IWI_TX_DESC_SIZE * count, PAGE_SIZE, 0, 539 &ring->desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 540 if (error != 0) { 541 aprint_error("%s: could not allocate tx ring DMA memory\n", 542 sc->sc_dev.dv_xname); 543 goto fail; 544 } 545 546 error = bus_dmamem_map(sc->sc_dmat, &ring->desc_seg, nsegs, 547 IWI_TX_DESC_SIZE * count, 548 (caddr_t *)&ring->desc, BUS_DMA_NOWAIT); 549 if (error != 0) { 550 aprint_error("%s: could not map tx ring DMA memory\n", 551 sc->sc_dev.dv_xname); 552 goto fail; 553 } 554 555 error = bus_dmamap_load(sc->sc_dmat, ring->desc_map, ring->desc, 556 IWI_TX_DESC_SIZE * count, NULL, 557 BUS_DMA_NOWAIT); 558 if (error != 0) { 559 aprint_error("%s: could not load tx ring DMA map\n", 560 sc->sc_dev.dv_xname); 561 goto fail; 562 } 563 564 memset(ring->desc, 0, IWI_TX_DESC_SIZE * count); 565 566 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 567 M_NOWAIT | M_ZERO); 568 if (ring->data == NULL) { 569 aprint_error("%s: could not allocate soft data\n", 570 sc->sc_dev.dv_xname); 571 error = ENOMEM; 572 goto fail; 573 } 574 575 /* 576 * Allocate Tx buffers DMA maps 577 */ 578 for (i = 0; i < count; i++) { 579 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, IWI_MAX_NSEG, 580 MCLBYTES, 0, BUS_DMA_NOWAIT, &ring->data[i].map); 581 if (error != 0) { 582 aprint_error("%s: could not create tx buf DMA map", 583 sc->sc_dev.dv_xname); 584 goto fail; 585 } 586 } 587 return 0; 588 589 fail: iwi_free_tx_ring(sc, ring); 590 return error; 591 } 592 593 static void 594 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 595 { 596 struct iwi_tx_data *data; 597 int i; 598 599 for (i = 0; i < ring->count; i++) { 600 data = &ring->data[i]; 601 602 if (data->m != NULL) { 603 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 604 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 605 bus_dmamap_unload(sc->sc_dmat, data->map); 606 m_freem(data->m); 607 data->m = NULL; 608 } 609 610 if (data->ni != NULL) { 611 ieee80211_free_node(data->ni); 612 data->ni = NULL; 613 } 614 } 615 616 ring->queued = 0; 617 ring->cur = ring->next = 0; 618 } 619 620 static void 621 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 622 { 623 int i; 624 625 if (ring->desc_map != NULL) { 626 if (ring->desc != NULL) { 627 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 628 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 629 IWI_TX_DESC_SIZE * ring->count); 630 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 631 } 632 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 633 } 634 635 for (i = 0; i < ring->count; i++) { 636 if (ring->data[i].m != NULL) { 637 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 638 m_freem(ring->data[i].m); 639 } 640 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 641 } 642 } 643 644 static int 645 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, 646 int count) 647 { 648 int i, error; 649 650 ring->count = count; 651 ring->cur = 0; 652 653 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 654 M_NOWAIT | M_ZERO); 655 if (ring->data == NULL) { 656 aprint_error("%s: could not allocate soft data\n", 657 sc->sc_dev.dv_xname); 658 error = ENOMEM; 659 goto fail; 660 } 661 662 /* 663 * Allocate and map Rx buffers 664 */ 665 for (i = 0; i < count; i++) { 666 667 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 668 0, BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, &ring->data[i].map); 669 if (error != 0) { 670 aprint_error("%s: could not create rx buf DMA map", 671 sc->sc_dev.dv_xname); 672 goto fail; 673 } 674 675 if ((ring->data[i].m = iwi_alloc_rx_buf(sc)) == NULL) { 676 error = ENOMEM; 677 goto fail; 678 } 679 680 error = bus_dmamap_load_mbuf(sc->sc_dmat, ring->data[i].map, 681 ring->data[i].m, BUS_DMA_READ | BUS_DMA_NOWAIT); 682 if (error != 0) { 683 aprint_error("%s: could not load rx buffer DMA map\n", 684 sc->sc_dev.dv_xname); 685 goto fail; 686 } 687 } 688 689 return 0; 690 691 fail: iwi_free_rx_ring(sc, ring); 692 return error; 693 } 694 695 static void 696 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 697 { 698 ring->cur = 0; 699 } 700 701 static void 702 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 703 { 704 int i; 705 706 for (i = 0; i < ring->count; i++) { 707 if (ring->data[i].m != NULL) { 708 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 709 m_freem(ring->data[i].m); 710 } 711 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 712 } 713 } 714 715 static void 716 iwi_shutdown(void *arg) 717 { 718 struct iwi_softc *sc = (struct iwi_softc *)arg; 719 struct ifnet *ifp = sc->sc_ic.ic_ifp; 720 721 iwi_stop(ifp, 1); 722 } 723 724 static int 725 iwi_suspend(struct iwi_softc *sc) 726 { 727 struct ifnet *ifp = sc->sc_ic.ic_ifp; 728 729 iwi_stop(ifp, 1); 730 731 return 0; 732 } 733 734 static int 735 iwi_resume(struct iwi_softc *sc) 736 { 737 struct ifnet *ifp = sc->sc_ic.ic_ifp; 738 pcireg_t data; 739 740 /* clear device specific PCI configuration register 0x41 */ 741 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 742 data &= ~0x0000ff00; 743 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 744 745 if (ifp->if_flags & IFF_UP) { 746 iwi_init(ifp); 747 if (ifp->if_flags & IFF_RUNNING) 748 iwi_start(ifp); 749 } 750 751 return 0; 752 } 753 754 static void 755 iwi_powerhook(int why, void *arg) 756 { 757 struct iwi_softc *sc = arg; 758 int s; 759 760 s = splnet(); 761 switch (why) { 762 case PWR_SUSPEND: 763 case PWR_STANDBY: 764 iwi_suspend(sc); 765 break; 766 case PWR_RESUME: 767 iwi_resume(sc); 768 break; 769 case PWR_SOFTSUSPEND: 770 case PWR_SOFTSTANDBY: 771 case PWR_SOFTRESUME: 772 break; 773 } 774 splx(s); 775 } 776 777 static int 778 iwi_media_change(struct ifnet *ifp) 779 { 780 int error; 781 782 error = ieee80211_media_change(ifp); 783 if (error != ENETRESET) 784 return error; 785 786 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 787 iwi_init(ifp); 788 789 return 0; 790 } 791 792 /* 793 * The firmware automaticly adapt the transmit speed. We report the current 794 * transmit speed here. 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 uint32_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 uint32_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 return (*sc->sc_newstate)(ic, nstate, arg); 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 */ 899 static uint16_t 900 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 901 { 902 uint32_t tmp; 903 uint16_t val; 904 int n; 905 906 /* Clock C once before the first command */ 907 IWI_EEPROM_CTL(sc, 0); 908 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 909 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 910 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 911 912 /* Write start bit (1) */ 913 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 914 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 915 916 /* Write READ opcode (10) */ 917 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 918 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 919 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 920 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 921 922 /* Write address A7-A0 */ 923 for (n = 7; n >= 0; n--) { 924 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 925 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 926 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 927 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 928 } 929 930 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 931 932 /* Read data Q15-Q0 */ 933 val = 0; 934 for (n = 15; n >= 0; n--) { 935 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 936 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 937 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 938 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 939 } 940 941 IWI_EEPROM_CTL(sc, 0); 942 943 /* Clear Chip Select and clock C */ 944 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 945 IWI_EEPROM_CTL(sc, 0); 946 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 947 948 return val; 949 } 950 951 /* 952 * XXX: Hack to set the current channel to the value advertised in beacons or 953 * probe responses. Only used during AP detection. 954 */ 955 static void 956 iwi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 957 { 958 struct ieee80211_frame *wh; 959 uint8_t subtype; 960 uint8_t *frm, *efrm; 961 962 wh = mtod(m, struct ieee80211_frame *); 963 964 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 965 return; 966 967 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 968 969 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 970 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 971 return; 972 973 frm = (uint8_t *)(wh + 1); 974 efrm = mtod(m, uint8_t *) + m->m_len; 975 976 frm += 12; /* skip tstamp, bintval and capinfo fields */ 977 while (frm < efrm) { 978 if (*frm == IEEE80211_ELEMID_DSPARMS) 979 #if IEEE80211_CHAN_MAX < 255 980 if (frm[2] <= IEEE80211_CHAN_MAX) 981 #endif 982 ic->ic_bss->ni_chan = &ic->ic_channels[frm[2]]; 983 984 frm += frm[1] + 2; 985 } 986 } 987 988 static struct mbuf * 989 iwi_alloc_rx_buf(struct iwi_softc *sc) 990 { 991 struct mbuf *m; 992 993 MGETHDR(m, M_DONTWAIT, MT_DATA); 994 if (m == NULL) { 995 aprint_error("%s: could not allocate rx mbuf\n", 996 sc->sc_dev.dv_xname); 997 return NULL; 998 } 999 1000 MCLGET(m, M_DONTWAIT); 1001 if (!(m->m_flags & M_EXT)) { 1002 aprint_error("%s: could not allocate rx mbuf cluster\n", 1003 sc->sc_dev.dv_xname); 1004 m_freem(m); 1005 return NULL; 1006 } 1007 1008 m->m_pkthdr.len = m->m_len = m->m_ext.ext_size; 1009 return m; 1010 } 1011 1012 static void 1013 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 1014 struct iwi_frame *frame) 1015 { 1016 struct ieee80211com *ic = &sc->sc_ic; 1017 struct ifnet *ifp = ic->ic_ifp; 1018 struct mbuf *m, *m_new; 1019 struct ieee80211_frame *wh; 1020 struct ieee80211_node *ni; 1021 int error; 1022 1023 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u\n", 1024 le16toh(frame->len), frame->chan, frame->rssi_dbm)); 1025 1026 bus_dmamap_sync(sc->sc_dmat, data->map, sizeof (struct iwi_hdr), 1027 sizeof (struct iwi_frame) + le16toh(frame->len), 1028 BUS_DMASYNC_POSTREAD); 1029 1030 if (le16toh(frame->len) < sizeof (struct ieee80211_frame) || 1031 le16toh(frame->len) > MCLBYTES) { 1032 DPRINTF(("%s: bad frame length\n", sc->sc_dev.dv_xname)); 1033 ifp->if_ierrors++; 1034 return; 1035 } 1036 1037 /* 1038 * Try to allocate a new mbuf for this ring element and 1039 * load it before processing the current mbuf. If the ring 1040 * element cannot be reloaded, drop the received packet 1041 * and reuse the old mbuf. In the unlikely case that 1042 * the old mbuf can't be reloaded either, explicitly panic. 1043 * 1044 * XXX Reorganize buffer by moving elements from the logical 1045 * end of the ring to the front instead of dropping. 1046 */ 1047 if ((m_new = iwi_alloc_rx_buf(sc)) == NULL) { 1048 ifp->if_ierrors++; 1049 return; 1050 } 1051 1052 bus_dmamap_unload(sc->sc_dmat, data->map); 1053 1054 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m_new, 1055 BUS_DMA_READ | BUS_DMA_NOWAIT); 1056 if (error != 0) { 1057 aprint_error("%s: could not load rx buf DMA map\n", 1058 sc->sc_dev.dv_xname); 1059 m_freem(m_new); 1060 ifp->if_ierrors++; 1061 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, 1062 data->m, BUS_DMA_READ | BUS_DMA_NOWAIT); 1063 if (error) 1064 panic("%s: unable to remap rx buf", 1065 sc->sc_dev.dv_xname); 1066 return; 1067 } 1068 1069 /* 1070 * New mbuf successfully loaded, update RX ring and continue 1071 * processing. 1072 */ 1073 m = data->m; 1074 data->m = m_new; 1075 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, data->map->dm_segs[0].ds_addr); 1076 1077 /* Finalize mbuf */ 1078 m->m_pkthdr.rcvif = ifp; 1079 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1080 sizeof (struct iwi_frame) + le16toh(frame->len); 1081 1082 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1083 1084 if (ic->ic_state == IEEE80211_S_SCAN) 1085 iwi_fix_channel(ic, m); 1086 1087 #if NBPFILTER > 0 1088 if (sc->sc_drvbpf != NULL) { 1089 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1090 1091 tap->wr_flags = 0; 1092 tap->wr_rate = frame->rate; 1093 tap->wr_chan_freq = 1094 htole16(ic->ic_channels[frame->chan].ic_freq); 1095 tap->wr_chan_flags = 1096 htole16(ic->ic_channels[frame->chan].ic_flags); 1097 tap->wr_antsignal = frame->signal; 1098 tap->wr_antenna = frame->antenna; 1099 1100 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1101 } 1102 #endif 1103 1104 wh = mtod(m, struct ieee80211_frame *); 1105 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1106 1107 /* Send the frame to the upper layer */ 1108 ieee80211_input(ic, m, ni, frame->rssi_dbm, 0); 1109 1110 /* node is no longer needed */ 1111 ieee80211_free_node(ni); 1112 } 1113 1114 static void 1115 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif) 1116 { 1117 struct ieee80211com *ic = &sc->sc_ic; 1118 struct iwi_notif_scan_channel *chan; 1119 struct iwi_notif_scan_complete *scan; 1120 struct iwi_notif_authentication *auth; 1121 struct iwi_notif_association *assoc; 1122 1123 switch (notif->type) { 1124 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1125 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1126 1127 DPRINTFN(2, ("Finished scanning channel (%u)\n", chan->nchan)); 1128 break; 1129 1130 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1131 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1132 1133 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1134 scan->status)); 1135 1136 /* monitor mode uses scan to set the channel ... */ 1137 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1138 sc->flags &= ~IWI_FLAG_SCANNING; 1139 ieee80211_end_scan(ic); 1140 } else 1141 iwi_set_chan(sc, ic->ic_ibss_chan); 1142 break; 1143 1144 case IWI_NOTIF_TYPE_AUTHENTICATION: 1145 auth = (struct iwi_notif_authentication *)(notif + 1); 1146 1147 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 1148 1149 switch (auth->state) { 1150 case IWI_AUTHENTICATED: 1151 ieee80211_node_authorize(ic, ic->ic_bss); 1152 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1153 break; 1154 1155 case IWI_DEAUTHENTICATED: 1156 break; 1157 1158 default: 1159 aprint_error("%s: unknown authentication state %u\n", 1160 sc->sc_dev.dv_xname, auth->state); 1161 } 1162 break; 1163 1164 case IWI_NOTIF_TYPE_ASSOCIATION: 1165 assoc = (struct iwi_notif_association *)(notif + 1); 1166 1167 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 1168 assoc->status)); 1169 1170 switch (assoc->state) { 1171 case IWI_AUTHENTICATED: 1172 /* re-association, do nothing */ 1173 break; 1174 1175 case IWI_ASSOCIATED: 1176 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1177 break; 1178 1179 case IWI_DEASSOCIATED: 1180 ieee80211_begin_scan(ic, 1); 1181 break; 1182 1183 default: 1184 aprint_error("%s: unknown association state %u\n", 1185 sc->sc_dev.dv_xname, assoc->state); 1186 } 1187 break; 1188 1189 case IWI_NOTIF_TYPE_CALIBRATION: 1190 case IWI_NOTIF_TYPE_BEACON: 1191 case IWI_NOTIF_TYPE_NOISE: 1192 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1193 break; 1194 1195 default: 1196 aprint_error("%s: unknown notification type %u\n", 1197 sc->sc_dev.dv_xname, notif->type); 1198 } 1199 } 1200 1201 static void 1202 iwi_rx_intr(struct iwi_softc *sc) 1203 { 1204 struct iwi_rx_data *data; 1205 struct iwi_hdr *hdr; 1206 uint32_t hw; 1207 1208 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1209 1210 for (; sc->rxq.cur != hw;) { 1211 data = &sc->rxq.data[sc->rxq.cur]; 1212 1213 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1214 data->map->dm_mapsize, BUS_DMASYNC_POSTREAD); 1215 1216 hdr = mtod(data->m, struct iwi_hdr *); 1217 1218 switch (hdr->type) { 1219 case IWI_HDR_TYPE_FRAME: 1220 iwi_frame_intr(sc, data, sc->rxq.cur, 1221 (struct iwi_frame *)(hdr + 1)); 1222 break; 1223 1224 case IWI_HDR_TYPE_NOTIF: 1225 iwi_notification_intr(sc, 1226 (struct iwi_notif *)(hdr + 1)); 1227 break; 1228 1229 default: 1230 aprint_error("%s: unknown hdr type %u\n", 1231 sc->sc_dev.dv_xname, hdr->type); 1232 } 1233 1234 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1235 1236 sc->rxq.cur = (sc->rxq.cur + 1) % sc->rxq.count; 1237 } 1238 1239 1240 /* Tell the firmware what we have processed */ 1241 hw = (hw == 0) ? sc->rxq.count - 1 : hw - 1; 1242 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1243 } 1244 1245 static void 1246 iwi_tx_intr(struct iwi_softc *sc) 1247 { 1248 struct ifnet *ifp = &sc->sc_if; 1249 struct iwi_tx_data *data; 1250 uint32_t hw; 1251 1252 hw = CSR_READ_4(sc, IWI_CSR_TX1_RIDX); 1253 1254 for (; sc->txq.next != hw;) { 1255 data = &sc->txq.data[sc->txq.next]; 1256 1257 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1258 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1259 bus_dmamap_unload(sc->sc_dmat, data->map); 1260 m_freem(data->m); 1261 data->m = NULL; 1262 ieee80211_free_node(data->ni); 1263 data->ni = NULL; 1264 1265 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next)); 1266 1267 ifp->if_opackets++; 1268 1269 sc->txq.queued--; 1270 sc->txq.next = (sc->txq.next + 1) % sc->txq.count; 1271 } 1272 1273 sc->sc_tx_timer = 0; 1274 ifp->if_flags &= ~IFF_OACTIVE; 1275 1276 /* Call start() since some buffer descriptors have been released */ 1277 (*ifp->if_start)(ifp); 1278 } 1279 1280 static int 1281 iwi_intr(void *arg) 1282 { 1283 struct iwi_softc *sc = arg; 1284 uint32_t r; 1285 1286 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1287 return 0; 1288 1289 /* Acknowledge interrupts */ 1290 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1291 1292 if (r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)) { 1293 aprint_error("%s: fatal error\n", sc->sc_dev.dv_xname); 1294 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1295 iwi_stop(&sc->sc_if, 1); 1296 } 1297 1298 if (r & IWI_INTR_FW_INITED) { 1299 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1300 wakeup(sc); 1301 } 1302 1303 if (r & IWI_INTR_RADIO_OFF) { 1304 DPRINTF(("radio transmitter off\n")); 1305 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1306 iwi_stop(&sc->sc_if, 1); 1307 } 1308 1309 if (r & IWI_INTR_RX_DONE) 1310 iwi_rx_intr(sc); 1311 1312 if (r & IWI_INTR_CMD_DONE) 1313 wakeup(sc); 1314 1315 if (r & IWI_INTR_TX1_DONE) 1316 iwi_tx_intr(sc); 1317 1318 return 1; 1319 } 1320 1321 static int 1322 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len, 1323 int async) 1324 { 1325 struct iwi_cmd_desc *desc; 1326 1327 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1328 1329 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1330 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1331 desc->type = type; 1332 desc->len = len; 1333 memcpy(desc->data, data, len); 1334 1335 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 1336 sc->cmdq.cur * IWI_CMD_DESC_SIZE, 1337 IWI_CMD_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1338 1339 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur, 1340 type, len)); 1341 1342 sc->cmdq.cur = (sc->cmdq.cur + 1) % sc->cmdq.count; 1343 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1344 1345 return async ? 0 : tsleep(sc, 0, "iwicmd", hz); 1346 } 1347 1348 static int 1349 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1350 { 1351 struct iwi_softc *sc = ifp->if_softc; 1352 struct ieee80211com *ic = &sc->sc_ic; 1353 struct ieee80211_frame wh; 1354 struct ieee80211_key *k; 1355 struct iwi_tx_data *data; 1356 struct iwi_tx_desc *desc; 1357 struct mbuf *mnew; 1358 int error, i; 1359 1360 (void)memcpy(&wh, mtod(m0, struct ieee80211_frame *), sizeof(wh)); 1361 if (wh.i_fc[1] & IEEE80211_FC1_WEP) { 1362 k = ieee80211_crypto_encap(ic, ni, m0); 1363 if (k == NULL) { 1364 m_freem(m0); 1365 return ENOBUFS; 1366 } 1367 } 1368 1369 #if NBPFILTER > 0 1370 if (sc->sc_drvbpf != NULL) { 1371 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1372 1373 tap->wt_flags = 0; 1374 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1375 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1376 1377 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1378 } 1379 #endif 1380 1381 data = &sc->txq.data[sc->txq.cur]; 1382 desc = &sc->txq.desc[sc->txq.cur]; 1383 1384 /* trim IEEE802.11 header */ 1385 m_adj(m0, sizeof (struct ieee80211_frame)); 1386 1387 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1388 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1389 if (error != 0 && error != EFBIG) { 1390 aprint_error("%s: could not map mbuf (error %d)\n", 1391 sc->sc_dev.dv_xname, error); 1392 m_freem(m0); 1393 return error; 1394 } 1395 if (error != 0) { 1396 /* too many fragments, linearize */ 1397 1398 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1399 if (mnew == NULL) { 1400 m_freem(m0); 1401 return ENOMEM; 1402 } 1403 1404 M_COPY_PKTHDR(mnew, m0); 1405 1406 /* If the data won't fit in the header, get a cluster */ 1407 if (m0->m_pkthdr.len > MHLEN) { 1408 MCLGET(mnew, M_DONTWAIT); 1409 if (!(mnew->m_flags & M_EXT)) { 1410 m_freem(m0); 1411 m_freem(mnew); 1412 return ENOMEM; 1413 } 1414 } 1415 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, caddr_t)); 1416 m_freem(m0); 1417 mnew->m_len = mnew->m_pkthdr.len; 1418 m0 = mnew; 1419 1420 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1421 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1422 if (error != 0) { 1423 aprint_error("%s: could not map mbuf (error %d)\n", 1424 sc->sc_dev.dv_xname, error); 1425 m_freem(m0); 1426 return error; 1427 } 1428 } 1429 1430 data->m = m0; 1431 data->ni = ni; 1432 1433 desc->hdr.type = IWI_HDR_TYPE_DATA; 1434 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1435 desc->cmd = IWI_DATA_CMD_TX; 1436 desc->len = htole16(m0->m_pkthdr.len); 1437 (void)memcpy(&desc->wh, &wh, sizeof (struct ieee80211_frame)); 1438 desc->flags = 0; 1439 if (!IEEE80211_IS_MULTICAST(wh.i_addr1)) 1440 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1441 1442 #if 0 1443 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 1444 wh.i_fc[1] |= IEEE80211_FC1_WEP; 1445 desc->wep_txkey = ic->ic_crypto.cs_def_txkey; 1446 } else 1447 #endif 1448 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1449 1450 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1451 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1452 1453 desc->nseg = htole32(data->map->dm_nsegs); 1454 for (i = 0; i < data->map->dm_nsegs; i++) { 1455 desc->seg_addr[i] = htole32(data->map->dm_segs[i].ds_addr); 1456 desc->seg_len[i] = htole16(data->map->dm_segs[i].ds_len); 1457 } 1458 1459 bus_dmamap_sync(sc->sc_dmat, sc->txq.desc_map, 1460 sc->txq.cur * IWI_TX_DESC_SIZE, 1461 IWI_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1462 1463 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1464 BUS_DMASYNC_PREWRITE); 1465 1466 DPRINTFN(5, ("sending data frame len=%u nseg=%u\n", 1467 le16toh(desc->len), le32toh(desc->nseg))); 1468 1469 /* Inform firmware about this new packet */ 1470 sc->txq.queued++; 1471 sc->txq.cur = (sc->txq.cur + 1) % sc->txq.count; 1472 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq.cur); 1473 1474 return 0; 1475 } 1476 1477 static void 1478 iwi_start(struct ifnet *ifp) 1479 { 1480 struct iwi_softc *sc = ifp->if_softc; 1481 struct ieee80211com *ic = &sc->sc_ic; 1482 struct mbuf *m0; 1483 struct ether_header *eh; 1484 struct ieee80211_node *ni; 1485 1486 if (ic->ic_state != IEEE80211_S_RUN) 1487 return; 1488 1489 for (;;) { 1490 IF_DEQUEUE(&ifp->if_snd, m0); 1491 if (m0 == NULL) 1492 break; 1493 1494 if (sc->txq.queued >= sc->txq.count - 4) { 1495 IF_PREPEND(&ifp->if_snd, m0); 1496 ifp->if_flags |= IFF_OACTIVE; 1497 break; 1498 } 1499 1500 if (m0->m_len < sizeof (struct ether_header) && 1501 (m0 = m_pullup(m0, sizeof (struct ether_header))) == NULL) 1502 continue; 1503 1504 #if NBPFILTER > 0 1505 if (ifp->if_bpf != NULL) 1506 bpf_mtap(ifp->if_bpf, m0); 1507 #endif 1508 1509 eh = mtod(m0, struct ether_header *); 1510 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1511 if (ni == NULL) { 1512 m_freem(m0); 1513 continue; 1514 } 1515 1516 m0 = ieee80211_encap(ic, m0, ni); 1517 if (m0 == NULL) { 1518 ieee80211_free_node(ni); 1519 continue; 1520 } 1521 1522 #if NBPFILTER > 0 1523 if (ic->ic_rawbpf != NULL) 1524 bpf_mtap(ic->ic_rawbpf, m0); 1525 #endif 1526 1527 if (iwi_tx_start(ifp, m0, ni) != 0) { 1528 ieee80211_free_node(ni); 1529 ifp->if_oerrors++; 1530 break; 1531 } 1532 1533 /* start watchdog timer */ 1534 sc->sc_tx_timer = 5; 1535 ifp->if_timer = 1; 1536 } 1537 } 1538 1539 static void 1540 iwi_watchdog(struct ifnet *ifp) 1541 { 1542 struct iwi_softc *sc = ifp->if_softc; 1543 1544 ifp->if_timer = 0; 1545 1546 if (sc->sc_tx_timer > 0) { 1547 if (--sc->sc_tx_timer == 0) { 1548 aprint_error("%s: device timeout\n", 1549 sc->sc_dev.dv_xname); 1550 ifp->if_oerrors++; 1551 ifp->if_flags &= ~IFF_UP; 1552 iwi_stop(ifp, 1); 1553 return; 1554 } 1555 ifp->if_timer = 1; 1556 } 1557 1558 ieee80211_watchdog(&sc->sc_ic); 1559 } 1560 1561 static int 1562 iwi_get_table0(struct iwi_softc *sc, uint32_t *tbl) 1563 { 1564 uint32_t size, buf[128]; 1565 1566 if (!(sc->flags & IWI_FLAG_FW_INITED)) { 1567 memset(buf, 0, sizeof buf); 1568 return copyout(buf, tbl, sizeof buf); 1569 } 1570 1571 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 1572 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 1573 1574 return copyout(buf, tbl, sizeof buf); 1575 } 1576 1577 static int 1578 iwi_get_radio(struct iwi_softc *sc, int *ret) 1579 { 1580 int val; 1581 1582 val = (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1 : 0; 1583 return copyout(&val, ret, sizeof val); 1584 } 1585 1586 static int 1587 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1588 { 1589 struct iwi_softc *sc = ifp->if_softc; 1590 struct ifreq *ifr; 1591 int s, error = 0; 1592 1593 s = splnet(); 1594 1595 switch (cmd) { 1596 case SIOCSIFFLAGS: 1597 if (ifp->if_flags & IFF_UP) { 1598 if (!(ifp->if_flags & IFF_RUNNING)) 1599 iwi_init(ifp); 1600 } else { 1601 if (ifp->if_flags & IFF_RUNNING) 1602 iwi_stop(ifp, 1); 1603 } 1604 break; 1605 1606 case SIOCGTABLE0: 1607 ifr = (struct ifreq *)data; 1608 error = iwi_get_table0(sc, (uint32_t *)ifr->ifr_data); 1609 break; 1610 1611 case SIOCGRADIO: 1612 ifr = (struct ifreq *)data; 1613 error = iwi_get_radio(sc, (int *)ifr->ifr_data); 1614 break; 1615 1616 case SIOCSLOADFW: 1617 /* only super-user can do that! */ 1618 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1619 break; 1620 1621 ifr = (struct ifreq *)data; 1622 error = iwi_cache_firmware(sc, ifr->ifr_data); 1623 break; 1624 1625 case SIOCSKILLFW: 1626 /* only super-user can do that! */ 1627 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1628 break; 1629 1630 ifp->if_flags &= ~IFF_UP; 1631 iwi_stop(ifp, 1); 1632 iwi_free_firmware(sc); 1633 break; 1634 1635 default: 1636 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 1637 } 1638 1639 if (error == ENETRESET && cmd != SIOCADDMULTI) { 1640 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1641 (IFF_UP | IFF_RUNNING)) 1642 iwi_init(ifp); 1643 error = 0; 1644 } 1645 1646 splx(s); 1647 return error; 1648 } 1649 1650 static void 1651 iwi_stop_master(struct iwi_softc *sc) 1652 { 1653 int ntries; 1654 1655 /* Disable interrupts */ 1656 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1657 1658 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1659 for (ntries = 0; ntries < 5; ntries++) { 1660 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1661 break; 1662 DELAY(10); 1663 } 1664 if (ntries == 5) 1665 aprint_error("%s: timeout waiting for master\n", 1666 sc->sc_dev.dv_xname); 1667 1668 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1669 IWI_RST_PRINCETON_RESET); 1670 1671 sc->flags &= ~IWI_FLAG_FW_INITED; 1672 } 1673 1674 static int 1675 iwi_reset(struct iwi_softc *sc) 1676 { 1677 int i, ntries; 1678 1679 iwi_stop_master(sc); 1680 1681 /* Move adapter to D0 state */ 1682 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1683 IWI_CTL_INIT); 1684 1685 /* Initialize Phase-Locked Level (PLL) */ 1686 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1687 1688 /* Wait for clock stabilization */ 1689 for (ntries = 0; ntries < 1000; ntries++) { 1690 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1691 break; 1692 DELAY(200); 1693 } 1694 if (ntries == 1000) { 1695 aprint_error("%s: timeout waiting for clock stabilization\n", 1696 sc->sc_dev.dv_xname); 1697 return EIO; 1698 } 1699 1700 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1701 IWI_RST_SW_RESET); 1702 1703 DELAY(10); 1704 1705 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1706 IWI_CTL_INIT); 1707 1708 /* Clear NIC memory */ 1709 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1710 for (i = 0; i < 0xc000; i++) 1711 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1712 1713 return 0; 1714 } 1715 1716 static int 1717 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size) 1718 { 1719 uint16_t *w; 1720 int ntries, i; 1721 1722 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1723 IWI_RST_STOP_MASTER); 1724 for (ntries = 0; ntries < 5; ntries++) { 1725 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1726 break; 1727 DELAY(10); 1728 } 1729 if (ntries == 5) { 1730 aprint_error("%s: timeout waiting for master\n", 1731 sc->sc_dev.dv_xname); 1732 return EIO; 1733 } 1734 1735 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1736 DELAY(5000); 1737 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1738 ~IWI_RST_PRINCETON_RESET); 1739 DELAY(5000); 1740 MEM_WRITE_4(sc, 0x3000e0, 0); 1741 DELAY(1000); 1742 MEM_WRITE_4(sc, 0x300004, 1); 1743 DELAY(1000); 1744 MEM_WRITE_4(sc, 0x300004, 0); 1745 DELAY(1000); 1746 MEM_WRITE_1(sc, 0x200000, 0x00); 1747 MEM_WRITE_1(sc, 0x200000, 0x40); 1748 DELAY(1000); 1749 1750 /* Adapter is buggy, we must set the address for each word */ 1751 for (w = uc; size > 0; w++, size -= 2) 1752 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 1753 1754 MEM_WRITE_1(sc, 0x200000, 0x00); 1755 MEM_WRITE_1(sc, 0x200000, 0x80); 1756 1757 /* Wait until we get a response in the uc queue */ 1758 for (ntries = 0; ntries < 100; ntries++) { 1759 if (MEM_READ_1(sc, 0x200000) & 1) 1760 break; 1761 DELAY(100); 1762 } 1763 if (ntries == 100) { 1764 aprint_error("%s: timeout waiting for ucode to initialize\n", 1765 sc->sc_dev.dv_xname); 1766 return EIO; 1767 } 1768 1769 /* Empty the uc queue or the firmware will not initialize properly */ 1770 for (i = 0; i < 7; i++) 1771 MEM_READ_4(sc, 0x200004); 1772 1773 MEM_WRITE_1(sc, 0x200000, 0x00); 1774 1775 return 0; 1776 } 1777 1778 /* macro to handle unaligned little endian data in firmware image */ 1779 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1780 static int 1781 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size) 1782 { 1783 bus_dmamap_t map; 1784 u_char *p, *end; 1785 uint32_t sentinel, ctl, sum; 1786 uint32_t cs, sl, cd, cl; 1787 int ntries, nsegs, error; 1788 int sn; 1789 1790 nsegs = (size + PAGE_SIZE - 1) / PAGE_SIZE; 1791 1792 /* Create a DMA map for the firmware image */ 1793 error = bus_dmamap_create(sc->sc_dmat, size, nsegs, size, 0, 1794 BUS_DMA_NOWAIT, &map); 1795 if (error != 0) { 1796 aprint_error("%s: could not create firmware DMA map\n", 1797 sc->sc_dev.dv_xname); 1798 goto fail1; 1799 } 1800 1801 error = bus_dmamap_load(sc->sc_dmat, map, fw, size, NULL, 1802 BUS_DMA_NOWAIT | BUS_DMA_WRITE); 1803 if (error != 0) { 1804 aprint_error("%s: could not load fw dma map(%d)\n", 1805 sc->sc_dev.dv_xname, error); 1806 goto fail2; 1807 } 1808 1809 /* Make sure the adapter will get up-to-date values */ 1810 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 1811 1812 /* Tell the adapter where the command blocks are stored */ 1813 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 1814 1815 /* 1816 * Store command blocks into adapter's internal memory using register 1817 * indirections. The adapter will read the firmware image through DMA 1818 * using information stored in command blocks. 1819 */ 1820 p = fw; 1821 end = p + size; 1822 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 1823 1824 sn = 0; 1825 sl = cl = 0; 1826 cs = cd = 0; 1827 while (p < end) { 1828 if (sl == 0) { 1829 cs = map->dm_segs[sn].ds_addr; 1830 sl = map->dm_segs[sn].ds_len; 1831 sn++; 1832 } 1833 if (cl == 0) { 1834 cd = GETLE32(p); p += 4; cs += 4; sl -= 4; 1835 cl = GETLE32(p); p += 4; cs += 4; sl -= 4; 1836 } 1837 while (sl > 0 && cl > 0) { 1838 int len = min(cl, sl); 1839 1840 sl -= len; 1841 cl -= len; 1842 p += len; 1843 1844 while (len > 0) { 1845 int mlen = min(len, IWI_CB_MAXDATALEN); 1846 1847 ctl = IWI_CB_DEFAULT_CTL | mlen; 1848 sum = ctl ^ cs ^ cd; 1849 1850 /* Write a command block */ 1851 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 1852 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, cs); 1853 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, cd); 1854 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 1855 1856 cs += mlen; 1857 cd += mlen; 1858 len -= mlen; 1859 } 1860 } 1861 } 1862 1863 /* Write a fictive final command block (sentinel) */ 1864 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 1865 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1866 1867 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1868 ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER)); 1869 1870 /* Tell the adapter to start processing command blocks */ 1871 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 1872 1873 /* Wait until the adapter has processed all command blocks */ 1874 for (ntries = 0; ntries < 400; ntries++) { 1875 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 1876 break; 1877 DELAY(100); 1878 } 1879 if (ntries == 400) { 1880 aprint_error("%s: timeout processing cb\n", 1881 sc->sc_dev.dv_xname); 1882 error = EIO; 1883 goto fail2; 1884 } 1885 1886 /* We're done with command blocks processing */ 1887 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 1888 1889 /* Allow interrupts so we know when the firmware is inited */ 1890 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1891 1892 /* Tell the adapter to initialize the firmware */ 1893 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 1894 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1895 IWI_CTL_ALLOW_STANDBY); 1896 1897 /* Wait at most one second for firmware initialization to complete */ 1898 if ((error = tsleep(sc, 0, "iwiinit", hz)) != 0) { 1899 aprint_error("%s: timeout waiting for firmware initialization " 1900 "to complete\n", sc->sc_dev.dv_xname); 1901 goto fail3; 1902 } 1903 1904 fail3: 1905 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 1906 bus_dmamap_unload(sc->sc_dmat, map); 1907 fail2: 1908 bus_dmamap_destroy(sc->sc_dmat, map); 1909 1910 fail1: 1911 return error; 1912 } 1913 1914 /* 1915 * Store firmware into kernel memory so we can download it when we need to, 1916 * e.g when the adapter wakes up from suspend mode. 1917 */ 1918 static int 1919 iwi_cache_firmware(struct iwi_softc *sc, void *data) 1920 { 1921 struct iwi_firmware *kfw = &sc->fw; 1922 struct iwi_firmware ufw; 1923 int error; 1924 1925 iwi_free_firmware(sc); 1926 1927 if ((error = copyin(data, &ufw, sizeof ufw)) != 0) 1928 goto fail1; 1929 1930 kfw->boot_size = ufw.boot_size; 1931 kfw->ucode_size = ufw.ucode_size; 1932 kfw->main_size = ufw.main_size; 1933 1934 kfw->boot = malloc(kfw->boot_size, M_DEVBUF, M_NOWAIT); 1935 if (kfw->boot == NULL) { 1936 error = ENOMEM; 1937 goto fail1; 1938 } 1939 1940 kfw->ucode = malloc(kfw->ucode_size, M_DEVBUF, M_NOWAIT); 1941 if (kfw->ucode == NULL) { 1942 error = ENOMEM; 1943 goto fail2; 1944 } 1945 1946 kfw->main = malloc(kfw->main_size, M_DEVBUF, M_NOWAIT); 1947 if (kfw->main == NULL) { 1948 error = ENOMEM; 1949 goto fail3; 1950 } 1951 1952 if ((error = copyin(ufw.boot, kfw->boot, kfw->boot_size)) != 0) 1953 goto fail4; 1954 1955 if ((error = copyin(ufw.ucode, kfw->ucode, kfw->ucode_size)) != 0) 1956 goto fail4; 1957 1958 if ((error = copyin(ufw.main, kfw->main, kfw->main_size)) != 0) 1959 goto fail4; 1960 1961 DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n", 1962 kfw->boot_size, kfw->ucode_size, kfw->main_size)); 1963 1964 sc->flags |= IWI_FLAG_FW_CACHED; 1965 1966 return 0; 1967 1968 fail4: free(kfw->boot, M_DEVBUF); 1969 fail3: free(kfw->ucode, M_DEVBUF); 1970 fail2: free(kfw->main, M_DEVBUF); 1971 fail1: 1972 return error; 1973 } 1974 1975 static void 1976 iwi_free_firmware(struct iwi_softc *sc) 1977 { 1978 if (!(sc->flags & IWI_FLAG_FW_CACHED)) 1979 return; 1980 1981 free(sc->fw.boot, M_DEVBUF); 1982 free(sc->fw.ucode, M_DEVBUF); 1983 free(sc->fw.main, M_DEVBUF); 1984 1985 sc->flags &= ~IWI_FLAG_FW_CACHED; 1986 } 1987 1988 static int 1989 iwi_config(struct iwi_softc *sc) 1990 { 1991 struct ieee80211com *ic = &sc->sc_ic; 1992 struct ifnet *ifp = &sc->sc_if; 1993 struct iwi_configuration config; 1994 struct iwi_rateset rs; 1995 struct iwi_txpower power; 1996 struct ieee80211_key *wk; 1997 struct iwi_wep_key wepkey; 1998 uint32_t data; 1999 int error, i; 2000 2001 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 2002 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 2003 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 2004 IEEE80211_ADDR_LEN, 0); 2005 if (error != 0) 2006 return error; 2007 2008 memset(&config, 0, sizeof config); 2009 config.bluetooth_coexistence = sc->bluetooth; 2010 config.antenna = sc->antenna; 2011 config.multicast_enabled = 1; 2012 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2013 config.disable_unicast_decryption = 1; 2014 config.disable_multicast_decryption = 1; 2015 DPRINTF(("Configuring adapter\n")); 2016 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, sizeof config, 2017 0); 2018 if (error != 0) 2019 return error; 2020 2021 data = htole32(IWI_POWER_MODE_CAM); 2022 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2023 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 2024 if (error != 0) 2025 return error; 2026 2027 data = htole32(ic->ic_rtsthreshold); 2028 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2029 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 2030 if (error != 0) 2031 return error; 2032 2033 data = htole32(ic->ic_fragthreshold); 2034 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2035 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data, 0); 2036 if (error != 0) 2037 return error; 2038 2039 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2040 power.mode = IWI_MODE_11B; 2041 power.nchan = 11; 2042 for (i = 0; i < 11; i++) { 2043 power.chan[i].chan = i + 1; 2044 power.chan[i].power = IWI_TXPOWER_MAX; 2045 } 2046 DPRINTF(("Setting .11b channels tx power\n")); 2047 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2048 0); 2049 if (error != 0) 2050 return error; 2051 2052 power.mode = IWI_MODE_11G; 2053 DPRINTF(("Setting .11g channels tx power\n")); 2054 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2055 0); 2056 if (error != 0) 2057 return error; 2058 } 2059 2060 rs.mode = IWI_MODE_11G; 2061 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2062 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2063 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2064 rs.nrates); 2065 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2066 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2067 if (error != 0) 2068 return error; 2069 2070 rs.mode = IWI_MODE_11A; 2071 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2072 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2073 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2074 rs.nrates); 2075 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2076 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2077 if (error != 0) 2078 return error; 2079 2080 data = htole32(arc4random()); 2081 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2082 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0); 2083 if (error != 0) 2084 return error; 2085 2086 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2087 wk = &ic->ic_crypto.cs_nw_keys[i]; 2088 2089 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2090 wepkey.idx = i; 2091 wepkey.len = wk->wk_keylen; 2092 memset(wepkey.key, 0, sizeof wepkey.key); 2093 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2094 DPRINTF(("Setting wep key index %u len %u\n", 2095 wepkey.idx, wepkey.len)); 2096 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2097 sizeof wepkey, 0); 2098 if (error != 0) 2099 return error; 2100 } 2101 2102 /* Enable adapter */ 2103 DPRINTF(("Enabling adapter\n")); 2104 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 2105 } 2106 2107 static int 2108 iwi_set_chan(struct iwi_softc *sc, struct ieee80211_channel *chan) 2109 { 2110 struct ieee80211com *ic = &sc->sc_ic; 2111 struct iwi_scan_v2 scan; 2112 2113 (void)memset(&scan, 0, sizeof scan); 2114 2115 scan.dwelltime[IWI_SCAN_TYPE_PASSIVE] = htole16(2000); 2116 scan.channels[0] = 1 | 2117 (IEEE80211_IS_CHAN_5GHZ(chan) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ); 2118 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2119 iwi_scan_type_set(scan, 1, IWI_SCAN_TYPE_PASSIVE); 2120 2121 DPRINTF(("Setting channel to %u\n", ieee80211_chan2ieee(ic, chan))); 2122 return iwi_cmd(sc, IWI_CMD_SCAN_V2, &scan, sizeof scan, 1); 2123 } 2124 2125 static int 2126 iwi_scan(struct iwi_softc *sc) 2127 { 2128 struct ieee80211com *ic = &sc->sc_ic; 2129 struct iwi_scan_v2 scan; 2130 uint32_t type; 2131 uint8_t *p; 2132 int i, count, idx; 2133 2134 (void)memset(&scan, 0, sizeof scan); 2135 scan.dwelltime[IWI_SCAN_TYPE_ACTIVE_BROADCAST] = 2136 htole16(sc->dwelltime); 2137 scan.dwelltime[IWI_SCAN_TYPE_ACTIVE_BDIRECT] = 2138 htole16(sc->dwelltime); 2139 2140 /* tell the firmware about the desired essid */ 2141 if (ic->ic_des_esslen) { 2142 int error; 2143 2144 DPRINTF(("%s: Setting adapter desired ESSID to %s\n", 2145 __func__, ic->ic_des_essid)); 2146 2147 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, 2148 ic->ic_des_essid, ic->ic_des_esslen, 1); 2149 if (error) 2150 return error; 2151 2152 type = IWI_SCAN_TYPE_ACTIVE_BDIRECT; 2153 } else { 2154 type = IWI_SCAN_TYPE_ACTIVE_BROADCAST; 2155 } 2156 2157 p = &scan.channels[0]; 2158 count = idx = 0; 2159 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2160 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) && 2161 isset(ic->ic_chan_active, i)) { 2162 *++p = i; 2163 count++; 2164 idx++; 2165 iwi_scan_type_set(scan, idx, type); 2166 } 2167 } 2168 if (count) { 2169 *(p - count) = IWI_CHAN_5GHZ | count; 2170 p++; 2171 } 2172 2173 count = 0; 2174 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2175 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) && 2176 isset(ic->ic_chan_active, i)) { 2177 *++p = i; 2178 count++; 2179 idx++; 2180 iwi_scan_type_set(scan, idx, type); 2181 } 2182 } 2183 *(p - count) = IWI_CHAN_2GHZ | count; 2184 2185 DPRINTF(("Start scanning\n")); 2186 return iwi_cmd(sc, IWI_CMD_SCAN_V2, &scan, sizeof scan, 1); 2187 } 2188 2189 static int 2190 iwi_auth_and_assoc(struct iwi_softc *sc) 2191 { 2192 struct ieee80211com *ic = &sc->sc_ic; 2193 struct ieee80211_node *ni = ic->ic_bss; 2194 struct ifnet *ifp = &sc->sc_if; 2195 struct iwi_configuration config; 2196 struct iwi_associate assoc; 2197 struct iwi_rateset rs; 2198 uint16_t capinfo; 2199 uint32_t data; 2200 int error; 2201 2202 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2203 memset(&config, 0, sizeof config); 2204 config.bluetooth_coexistence = sc->bluetooth; 2205 config.antenna = sc->antenna; 2206 config.multicast_enabled = 1; 2207 config.use_protection = 1; 2208 config.answer_pbreq = 2209 (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2210 config.disable_unicast_decryption = 1; 2211 config.disable_multicast_decryption = 1; 2212 DPRINTF(("Configuring adapter\n")); 2213 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, 2214 sizeof config, 1); 2215 if (error != 0) 2216 return error; 2217 } 2218 2219 #ifdef IWI_DEBUG 2220 if (iwi_debug > 0) { 2221 printf("Setting ESSID to "); 2222 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2223 printf("\n"); 2224 } 2225 #endif 2226 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 2227 if (error != 0) 2228 return error; 2229 2230 /* the rate set has already been "negotiated" */ 2231 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2232 IWI_MODE_11G; 2233 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2234 rs.nrates = ni->ni_rates.rs_nrates; 2235 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2236 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2237 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 2238 if (error != 0) 2239 return error; 2240 2241 if (ic->ic_opt_ie != NULL) { 2242 DPRINTF(("Setting optional IE (len=%u)\n", ic->ic_opt_ie_len)); 2243 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ic->ic_opt_ie, 2244 ic->ic_opt_ie_len, 1); 2245 if (error != 0) 2246 return error; 2247 } 2248 data = htole32(ni->ni_rssi); 2249 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 2250 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 2251 if (error != 0) 2252 return error; 2253 2254 memset(&assoc, 0, sizeof assoc); 2255 assoc.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2256 IWI_MODE_11G; 2257 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2258 if (ni->ni_authmode == IEEE80211_AUTH_SHARED) 2259 assoc.auth = (ic->ic_crypto.cs_def_txkey << 4) | IWI_AUTH_SHARED; 2260 if (ic->ic_opt_ie != NULL) 2261 assoc.policy |= htole16(IWI_POLICY_OPTIE); 2262 memcpy(assoc.tstamp, ni->ni_tstamp.data, 8); 2263 2264 if (ic->ic_opmode == IEEE80211_M_IBSS) 2265 capinfo = IEEE80211_CAPINFO_IBSS; 2266 else 2267 capinfo = IEEE80211_CAPINFO_ESS; 2268 if (ic->ic_flags & IEEE80211_F_PRIVACY) 2269 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2270 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2271 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2272 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2273 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2274 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2275 assoc.capinfo = htole16(capinfo); 2276 2277 assoc.lintval = htole16(ic->ic_lintval); 2278 assoc.intval = htole16(ni->ni_intval); 2279 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 2280 if (ic->ic_opmode == IEEE80211_M_IBSS) 2281 IEEE80211_ADDR_COPY(assoc.dst, ifp->if_broadcastaddr); 2282 else 2283 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 2284 DPRINTF(("Trying to associate to %s channel %u auth %u\n", 2285 ether_sprintf(assoc.bssid), assoc.chan, assoc.auth)); 2286 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 2287 } 2288 2289 static int 2290 iwi_init(struct ifnet *ifp) 2291 { 2292 struct iwi_softc *sc = ifp->if_softc; 2293 struct ieee80211com *ic = &sc->sc_ic; 2294 struct iwi_firmware *fw = &sc->fw; 2295 int i, error; 2296 2297 /* exit immediately if firmware has not been ioctl'd */ 2298 if (!(sc->flags & IWI_FLAG_FW_CACHED)) { 2299 if (!(sc->flags & IWI_FLAG_FW_WARNED)) 2300 aprint_error("%s: Firmware not loaded\n", 2301 sc->sc_dev.dv_xname); 2302 sc->flags |= IWI_FLAG_FW_WARNED; 2303 ifp->if_flags &= ~IFF_UP; 2304 return EIO; 2305 } 2306 2307 iwi_stop(ifp, 0); 2308 2309 if ((error = iwi_reset(sc)) != 0) { 2310 aprint_error("%s: could not reset adapter\n", 2311 sc->sc_dev.dv_xname); 2312 goto fail; 2313 } 2314 2315 if ((error = iwi_load_firmware(sc, fw->boot, fw->boot_size)) != 0) { 2316 aprint_error("%s: could not load boot firmware\n", 2317 sc->sc_dev.dv_xname); 2318 goto fail; 2319 } 2320 2321 if ((error = iwi_load_ucode(sc, fw->ucode, fw->ucode_size)) != 0) { 2322 aprint_error("%s: could not load microcode\n", 2323 sc->sc_dev.dv_xname); 2324 goto fail; 2325 } 2326 2327 iwi_stop_master(sc); 2328 2329 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.desc_map->dm_segs[0].ds_addr); 2330 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 2331 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 2332 2333 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2334 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq.count); 2335 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq.cur); 2336 2337 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2338 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq.count); 2339 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq.cur); 2340 2341 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2342 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq.count); 2343 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq.cur); 2344 2345 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq.desc_map->dm_segs[0].ds_addr); 2346 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq.count); 2347 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq.cur); 2348 2349 for (i = 0; i < sc->rxq.count; i++) 2350 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, 2351 sc->rxq.data[i].map->dm_segs[0].ds_addr); 2352 2353 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count -1); 2354 2355 if ((error = iwi_load_firmware(sc, fw->main, fw->main_size)) != 0) { 2356 aprint_error("%s: could not load main firmware\n", 2357 sc->sc_dev.dv_xname); 2358 goto fail; 2359 } 2360 2361 sc->flags |= IWI_FLAG_FW_INITED; 2362 2363 if ((error = iwi_config(sc)) != 0) { 2364 aprint_error("%s: device configuration failed\n", 2365 sc->sc_dev.dv_xname); 2366 goto fail; 2367 } 2368 2369 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2370 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2371 else 2372 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2373 2374 ifp->if_flags &= ~IFF_OACTIVE; 2375 ifp->if_flags |= IFF_RUNNING; 2376 2377 return 0; 2378 2379 fail: ifp->if_flags &= ~IFF_UP; 2380 iwi_stop(ifp, 0); 2381 2382 return error; 2383 } 2384 2385 static void 2386 iwi_stop(struct ifnet *ifp, int disable) 2387 { 2388 struct iwi_softc *sc = ifp->if_softc; 2389 struct ieee80211com *ic = &sc->sc_ic; 2390 2391 iwi_stop_master(sc); 2392 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2393 2394 /* reset rings */ 2395 iwi_reset_cmd_ring(sc, &sc->cmdq); 2396 iwi_reset_tx_ring(sc, &sc->txq); 2397 iwi_reset_rx_ring(sc, &sc->rxq); 2398 2399 ifp->if_timer = 0; 2400 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2401 2402 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2403 } 2404
Indexes created Fri Oct 03 02:09:57 GMT 2025