if_iwi.c revision 1.4.2.1
1 /* $NetBSD: if_iwi.c,v 1.4.2.1 2005/04/29 11:29:06 kent 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 1.4.2.1 2005/04/29 11:29:06 kent Exp $"); 32 33 /*- 34 * Intel(R) PRO/Wireless 2200BG/2915ABG driver 35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 36 */ 37 38 #include "bpfilter.h" 39 40 #include <sys/param.h> 41 #include <sys/sockio.h> 42 #include <sys/sysctl.h> 43 #include <sys/mbuf.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/systm.h> 47 #include <sys/malloc.h> 48 #include <sys/conf.h> 49 50 #include <machine/bus.h> 51 #include <machine/endian.h> 52 #include <machine/intr.h> 53 54 #include <dev/pci/pcireg.h> 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/pcidevs.h> 57 58 #if NBPFILTER > 0 59 #include <net/bpf.h> 60 #endif 61 #include <net/if.h> 62 #include <net/if_arp.h> 63 #include <net/if_dl.h> 64 #include <net/if_ether.h> 65 #include <net/if_media.h> 66 #include <net/if_types.h> 67 68 #include <net80211/ieee80211_var.h> 69 #include <net80211/ieee80211_radiotap.h> 70 71 #include <netinet/in.h> 72 #include <netinet/in_systm.h> 73 #include <netinet/in_var.h> 74 #include <netinet/ip.h> 75 76 #include <crypto/arc4/arc4.h> 77 78 #include <dev/pci/if_iwireg.h> 79 #include <dev/pci/if_iwivar.h> 80 81 static const struct ieee80211_rateset iwi_rateset_11a = 82 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 83 84 static const struct ieee80211_rateset iwi_rateset_11b = 85 { 4, { 2, 4, 11, 22 } }; 86 87 static const struct ieee80211_rateset iwi_rateset_11g = 88 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 89 90 static int iwi_match(struct device *, struct cfdata *, void *); 91 static void iwi_attach(struct device *, struct device *, void *); 92 static int iwi_detach(struct device *, int); 93 static int iwi_dma_alloc(struct iwi_softc *); 94 static void iwi_release(struct iwi_softc *); 95 static int iwi_media_change(struct ifnet *); 96 static void iwi_media_status(struct ifnet *, struct ifmediareq *); 97 static u_int16_t iwi_read_prom_word(struct iwi_softc *, u_int8_t); 98 static int iwi_newstate(struct ieee80211com *, enum ieee80211_state, int); 99 static void iwi_fix_channel(struct ieee80211com *, struct mbuf *); 100 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_buf *, int, 101 struct iwi_frame *); 102 static void iwi_notification_intr(struct iwi_softc *, struct iwi_rx_buf *, 103 struct iwi_notif *); 104 static void iwi_rx_intr(struct iwi_softc *); 105 static void iwi_tx_intr(struct iwi_softc *); 106 static int iwi_intr(void *); 107 static int iwi_cmd(struct iwi_softc *, u_int8_t, void *, u_int8_t, int); 108 static int iwi_tx_start(struct ifnet *, struct mbuf *, struct ieee80211_node *); 109 static void iwi_start(struct ifnet *); 110 static void iwi_watchdog(struct ifnet *); 111 static int iwi_get_table0(struct iwi_softc *, u_int32_t *); 112 static int iwi_get_radio(struct iwi_softc *, int *); 113 static int iwi_ioctl(struct ifnet *, u_long, caddr_t); 114 static void iwi_stop_master(struct iwi_softc *); 115 static int iwi_reset(struct iwi_softc *); 116 static int iwi_load_ucode(struct iwi_softc *, void *, int); 117 static int iwi_load_firmware(struct iwi_softc *, void *, int); 118 static int iwi_cache_firmware(struct iwi_softc *, void *); 119 static void iwi_free_firmware(struct iwi_softc *); 120 static int iwi_config(struct iwi_softc *); 121 static int iwi_scan(struct iwi_softc *); 122 static int iwi_auth_and_assoc(struct iwi_softc *); 123 static int iwi_init(struct ifnet *); 124 static void iwi_stop(struct ifnet *, int); 125 126 static __inline u_int8_t MEM_READ_1(struct iwi_softc *sc, u_int32_t addr) 127 { 128 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 129 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 130 } 131 132 static __inline u_int32_t MEM_READ_4(struct iwi_softc *sc, u_int32_t addr) 133 { 134 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 135 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 136 } 137 138 #ifdef IWI_DEBUG 139 #define DPRINTF(x) if (iwi_debug > 0) printf x 140 #define DPRINTFN(n, x) if (iwi_debug >= (n)) printf x 141 int iwi_debug = 0; 142 #else 143 #define DPRINTF(x) 144 #define DPRINTFN(n, x) 145 #endif 146 147 CFATTACH_DECL(iwi, sizeof (struct iwi_softc), iwi_match, iwi_attach, 148 iwi_detach, NULL); 149 150 static int 151 iwi_match(struct device *parent, struct cfdata *match, void *aux) 152 { 153 struct pci_attach_args *pa = aux; 154 155 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 156 return 0; 157 158 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2200BG || 159 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG) 160 return 1; 161 162 return 0; 163 } 164 165 /* Base Address Register */ 166 #define IWI_PCI_BAR0 0x10 167 168 static void 169 iwi_attach(struct device *parent, struct device *self, void *aux) 170 { 171 struct iwi_softc *sc = (struct iwi_softc *)self; 172 struct ieee80211com *ic = &sc->sc_ic; 173 struct ifnet *ifp = &ic->ic_if; 174 struct pci_attach_args *pa = aux; 175 const char *intrstr; 176 char devinfo[256]; 177 bus_space_tag_t memt; 178 bus_space_handle_t memh; 179 bus_addr_t base; 180 pci_intr_handle_t ih; 181 pcireg_t data; 182 u_int16_t val; 183 int error, revision, i; 184 185 sc->sc_pct = pa->pa_pc; 186 sc->sc_pcitag = pa->pa_tag; 187 188 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 189 revision = PCI_REVISION(pa->pa_class); 190 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 191 192 /* clear device specific PCI configuration register 0x41 */ 193 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 194 data &= ~0x0000ff00; 195 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 196 197 /* enable bus-mastering */ 198 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 199 data |= PCI_COMMAND_MASTER_ENABLE; 200 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 201 202 /* map the register window */ 203 error = pci_mapreg_map(pa, IWI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 204 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, &base, &sc->sc_sz); 205 if (error != 0) { 206 aprint_error("%s: could not map memory space\n", 207 sc->sc_dev.dv_xname); 208 return; 209 } 210 211 sc->sc_st = memt; 212 sc->sc_sh = memh; 213 sc->sc_dmat = pa->pa_dmat; 214 215 /* disable interrupts */ 216 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 217 218 if (pci_intr_map(pa, &ih) != 0) { 219 aprint_error("%s: could not map interrupt\n", 220 sc->sc_dev.dv_xname); 221 return; 222 } 223 224 intrstr = pci_intr_string(sc->sc_pct, ih); 225 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, iwi_intr, sc); 226 if (sc->sc_ih == NULL) { 227 aprint_error("%s: could not establish interrupt", 228 sc->sc_dev.dv_xname); 229 if (intrstr != NULL) 230 aprint_error(" at %s", intrstr); 231 aprint_error("\n"); 232 return; 233 } 234 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 235 236 if (iwi_reset(sc) != 0) { 237 aprint_error("%s: could not reset adapter\n", 238 sc->sc_dev.dv_xname); 239 return; 240 } 241 242 if (iwi_dma_alloc(sc) != 0) { 243 aprint_error("%s: could not allocate DMA resources\n", 244 sc->sc_dev.dv_xname); 245 return; 246 } 247 248 ic->ic_phytype = IEEE80211_T_OFDM; 249 ic->ic_opmode = IEEE80211_M_STA; 250 ic->ic_state = IEEE80211_S_INIT; 251 252 /* set device capabilities */ 253 ic->ic_caps = IEEE80211_C_IBSS | IEEE80211_C_PMGT | IEEE80211_C_WEP | 254 IEEE80211_C_TXPMGT | IEEE80211_C_SHPREAMBLE; 255 256 /* read MAC address from EEPROM */ 257 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 258 ic->ic_myaddr[0] = val >> 8; 259 ic->ic_myaddr[1] = val & 0xff; 260 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 261 ic->ic_myaddr[2] = val >> 8; 262 ic->ic_myaddr[3] = val & 0xff; 263 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 264 ic->ic_myaddr[4] = val >> 8; 265 ic->ic_myaddr[5] = val & 0xff; 266 267 aprint_normal("%s: 802.11 address %s\n", sc->sc_dev.dv_xname, 268 ether_sprintf(ic->ic_myaddr)); 269 270 if (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_INTEL_PRO_WL_2200BG) { 271 /* set supported .11a rates */ 272 ic->ic_sup_rates[IEEE80211_MODE_11A] = iwi_rateset_11a; 273 274 /* set supported .11a channels */ 275 for (i = 36; i <= 64; i += 4) { 276 ic->ic_channels[i].ic_freq = 277 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 278 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 279 } 280 for (i = 149; i <= 161; i += 4) { 281 ic->ic_channels[i].ic_freq = 282 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 283 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 284 } 285 } 286 287 /* set supported .11b and .11g rates */ 288 ic->ic_sup_rates[IEEE80211_MODE_11B] = iwi_rateset_11b; 289 ic->ic_sup_rates[IEEE80211_MODE_11G] = iwi_rateset_11g; 290 291 /* set supported .11b and .11g channels (1 through 14) */ 292 for (i = 1; i <= 14; i++) { 293 ic->ic_channels[i].ic_freq = 294 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 295 ic->ic_channels[i].ic_flags = 296 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 297 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 298 } 299 300 /* default to authmode OPEN */ 301 sc->authmode = IEEE80211_AUTH_OPEN; 302 303 /* IBSS channel undefined for now */ 304 ic->ic_ibss_chan = &ic->ic_channels[0]; 305 306 ifp->if_softc = sc; 307 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 308 ifp->if_init = iwi_init; 309 ifp->if_stop = iwi_stop; 310 ifp->if_ioctl = iwi_ioctl; 311 ifp->if_start = iwi_start; 312 ifp->if_watchdog = iwi_watchdog; 313 IFQ_SET_READY(&ifp->if_snd); 314 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 315 316 if_attach(ifp); 317 ieee80211_ifattach(ifp); 318 /* override state transition machine */ 319 sc->sc_newstate = ic->ic_newstate; 320 ic->ic_newstate = iwi_newstate; 321 ieee80211_media_init(ifp, iwi_media_change, iwi_media_status); 322 323 #if NBPFILTER > 0 324 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 325 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf); 326 327 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 328 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 329 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT); 330 331 sc->sc_txtap_len = sizeof sc->sc_txtapu; 332 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 333 sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT); 334 #endif 335 } 336 337 static int 338 iwi_detach(struct device* self, int flags) 339 { 340 struct iwi_softc *sc = (struct iwi_softc *)self; 341 struct ifnet *ifp = &sc->sc_ic.ic_if; 342 343 iwi_stop(ifp, 1); 344 iwi_free_firmware(sc); 345 346 #if NBPFILTER > 0 347 bpfdetach(ifp); 348 #endif 349 ieee80211_ifdetach(ifp); 350 if_detach(ifp); 351 352 iwi_release(sc); 353 354 if (sc->sc_ih != NULL) { 355 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 356 sc->sc_ih = NULL; 357 } 358 359 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 360 361 return 0; 362 } 363 364 static int 365 iwi_dma_alloc(struct iwi_softc *sc) 366 { 367 int i, nsegs, error; 368 369 /* 370 * Allocate and map Tx ring 371 */ 372 error = bus_dmamap_create(sc->sc_dmat, 373 sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE, 1, 374 sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE, 0, BUS_DMA_NOWAIT, 375 &sc->tx_ring_map); 376 if (error != 0) { 377 aprint_error("%s: could not create tx ring DMA map\n", 378 sc->sc_dev.dv_xname); 379 goto fail; 380 } 381 382 error = bus_dmamem_alloc(sc->sc_dmat, 383 sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE, PAGE_SIZE, 0, 384 &sc->tx_ring_seg, 1, &nsegs, BUS_DMA_NOWAIT); 385 if (error != 0) { 386 aprint_error("%s: could not allocate tx ring DMA memory\n", 387 sc->sc_dev.dv_xname); 388 goto fail; 389 } 390 391 error = bus_dmamem_map(sc->sc_dmat, &sc->tx_ring_seg, nsegs, 392 sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE, 393 (caddr_t *)&sc->tx_desc, BUS_DMA_NOWAIT); 394 if (error != 0) { 395 aprint_error("%s: could not map tx ring DMA memory\n", 396 sc->sc_dev.dv_xname); 397 goto fail; 398 } 399 400 error = bus_dmamap_load(sc->sc_dmat, sc->tx_ring_map, sc->tx_desc, 401 sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE, NULL, 402 BUS_DMA_NOWAIT); 403 if (error != 0) { 404 aprint_error("%s: could not load tx ring DMA map\n", 405 sc->sc_dev.dv_xname); 406 goto fail; 407 } 408 409 memset(sc->tx_desc, 0, sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE); 410 411 /* 412 * Allocate and map command ring 413 */ 414 error = bus_dmamap_create(sc->sc_dmat, 415 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE, 1, 416 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE, 0, 417 BUS_DMA_NOWAIT, &sc->cmd_ring_map); 418 if (error != 0) { 419 aprint_error("%s: could not create command ring DMA map\n", 420 sc->sc_dev.dv_xname); 421 goto fail; 422 } 423 424 error = bus_dmamem_alloc(sc->sc_dmat, 425 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE, PAGE_SIZE, 0, 426 &sc->cmd_ring_seg, 1, &nsegs, BUS_DMA_NOWAIT); 427 if (error != 0) { 428 aprint_error("%s: could not allocate command ring DMA memory\n", 429 sc->sc_dev.dv_xname); 430 goto fail; 431 } 432 433 error = bus_dmamem_map(sc->sc_dmat, &sc->cmd_ring_seg, nsegs, 434 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE, 435 (caddr_t *)&sc->cmd_desc, BUS_DMA_NOWAIT); 436 if (error != 0) { 437 aprint_error("%s: could not map command ring DMA memory\n", 438 sc->sc_dev.dv_xname); 439 goto fail; 440 } 441 442 error = bus_dmamap_load(sc->sc_dmat, sc->cmd_ring_map, sc->cmd_desc, 443 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE, NULL, 444 BUS_DMA_NOWAIT); 445 if (error != 0) { 446 aprint_error("%s: could not load command ring DMA map\n", 447 sc->sc_dev.dv_xname); 448 goto fail; 449 } 450 451 memset(sc->cmd_desc, 0, 452 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE); 453 454 /* 455 * Allocate Tx buffers DMA maps 456 */ 457 for (i = 0; i < IWI_TX_RING_SIZE; i++) { 458 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, IWI_MAX_NSEG, 459 MCLBYTES, 0, BUS_DMA_NOWAIT, &sc->tx_buf[i].map); 460 if (error != 0) { 461 aprint_error("%s: could not create tx buf DMA map", 462 sc->sc_dev.dv_xname); 463 goto fail; 464 } 465 } 466 467 /* 468 * Allocate and map Rx buffers 469 */ 470 for (i = 0; i < IWI_RX_RING_SIZE; i++) { 471 472 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 473 0, BUS_DMA_NOWAIT, &sc->rx_buf[i].map); 474 if (error != 0) { 475 aprint_error("%s: could not create rx buf DMA map", 476 sc->sc_dev.dv_xname); 477 goto fail; 478 } 479 480 MGETHDR(sc->rx_buf[i].m, M_DONTWAIT, MT_DATA); 481 if (sc->rx_buf[i].m == NULL) { 482 aprint_error("%s: could not allocate rx mbuf\n", 483 sc->sc_dev.dv_xname); 484 error = ENOMEM; 485 goto fail; 486 } 487 488 MCLGET(sc->rx_buf[i].m, M_DONTWAIT); 489 if (!(sc->rx_buf[i].m->m_flags & M_EXT)) { 490 m_freem(sc->rx_buf[i].m); 491 aprint_error("%s: could not allocate rx mbuf cluster\n", 492 sc->sc_dev.dv_xname); 493 error = ENOMEM; 494 goto fail; 495 } 496 497 error = bus_dmamap_load(sc->sc_dmat, sc->rx_buf[i].map, 498 mtod(sc->rx_buf[i].m, void *), MCLBYTES, NULL, 499 BUS_DMA_NOWAIT); 500 if (error != 0) { 501 aprint_error("%s: could not load rx buffer DMA map\n", 502 sc->sc_dev.dv_xname); 503 goto fail; 504 } 505 } 506 507 return 0; 508 509 fail: iwi_release(sc); 510 return error; 511 } 512 513 static void 514 iwi_release(struct iwi_softc *sc) 515 { 516 int i; 517 518 if (sc->tx_ring_map != NULL) { 519 if (sc->tx_desc != NULL) { 520 bus_dmamap_unload(sc->sc_dmat, sc->tx_ring_map); 521 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->tx_desc, 522 sizeof (struct iwi_tx_desc) * IWI_TX_RING_SIZE); 523 bus_dmamem_free(sc->sc_dmat, &sc->tx_ring_seg, 1); 524 } 525 bus_dmamap_destroy(sc->sc_dmat, sc->tx_ring_map); 526 } 527 528 if (sc->cmd_ring_map != NULL) { 529 if (sc->cmd_desc != NULL) { 530 bus_dmamap_unload(sc->sc_dmat, sc->cmd_ring_map); 531 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->cmd_desc, 532 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_SIZE); 533 bus_dmamem_free(sc->sc_dmat, &sc->cmd_ring_seg, 1); 534 } 535 bus_dmamap_destroy(sc->sc_dmat, sc->cmd_ring_map); 536 } 537 538 for (i = 0; i < IWI_TX_RING_SIZE; i++) { 539 if (sc->tx_buf[i].m != NULL) { 540 bus_dmamap_unload(sc->sc_dmat, sc->tx_buf[i].map); 541 m_freem(sc->tx_buf[i].m); 542 } 543 bus_dmamap_destroy(sc->sc_dmat, sc->tx_buf[i].map); 544 } 545 546 for (i = 0; i < IWI_RX_RING_SIZE; i++) { 547 if (sc->rx_buf[i].m != NULL) { 548 bus_dmamap_unload(sc->sc_dmat, sc->rx_buf[i].map); 549 m_freem(sc->rx_buf[i].m); 550 } 551 bus_dmamap_destroy(sc->sc_dmat, sc->rx_buf[i].map); 552 } 553 } 554 555 static int 556 iwi_media_change(struct ifnet *ifp) 557 { 558 int error; 559 560 error = ieee80211_media_change(ifp); 561 if (error != ENETRESET) 562 return error; 563 564 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 565 iwi_init(ifp); 566 567 return 0; 568 } 569 570 static void 571 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 572 { 573 struct iwi_softc *sc = ifp->if_softc; 574 struct ieee80211com *ic = &sc->sc_ic; 575 #define N(a) (sizeof (a) / sizeof (a[0])) 576 static const struct { 577 u_int32_t val; 578 int rate; 579 } rates[] = { 580 { IWI_RATE_DS1, 2 }, 581 { IWI_RATE_DS2, 4 }, 582 { IWI_RATE_DS5, 11 }, 583 { IWI_RATE_DS11, 22 }, 584 { IWI_RATE_OFDM6, 12 }, 585 { IWI_RATE_OFDM9, 18 }, 586 { IWI_RATE_OFDM12, 24 }, 587 { IWI_RATE_OFDM18, 36 }, 588 { IWI_RATE_OFDM24, 48 }, 589 { IWI_RATE_OFDM36, 72 }, 590 { IWI_RATE_OFDM48, 96 }, 591 { IWI_RATE_OFDM54, 108 }, 592 }; 593 u_int32_t val; 594 int rate, i; 595 596 imr->ifm_status = IFM_AVALID; 597 imr->ifm_active = IFM_IEEE80211; 598 if (ic->ic_state == IEEE80211_S_RUN) 599 imr->ifm_status |= IFM_ACTIVE; 600 601 /* read current transmission rate from adapter */ 602 val = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 603 604 /* convert rate to 802.11 rate */ 605 for (i = 0; i < N(rates) && rates[i].val != val; i++); 606 rate = (i < N(rates)) ? rates[i].rate : 0; 607 608 imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode); 609 switch (ic->ic_opmode) { 610 case IEEE80211_M_STA: 611 break; 612 613 case IEEE80211_M_IBSS: 614 imr->ifm_active |= IFM_IEEE80211_ADHOC; 615 break; 616 617 case IEEE80211_M_MONITOR: 618 imr->ifm_active |= IFM_IEEE80211_MONITOR; 619 break; 620 621 case IEEE80211_M_AHDEMO: 622 case IEEE80211_M_HOSTAP: 623 /* should not get there */ 624 break; 625 } 626 #undef N 627 } 628 629 static int 630 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 631 { 632 struct iwi_softc *sc = ic->ic_softc; 633 634 switch (nstate) { 635 case IEEE80211_S_SCAN: 636 iwi_scan(sc); 637 break; 638 639 case IEEE80211_S_AUTH: 640 iwi_auth_and_assoc(sc); 641 break; 642 643 case IEEE80211_S_RUN: 644 if (ic->ic_opmode == IEEE80211_M_IBSS) 645 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1); 646 break; 647 648 case IEEE80211_S_ASSOC: 649 case IEEE80211_S_INIT: 650 break; 651 } 652 653 ic->ic_state = nstate; 654 return 0; 655 } 656 657 /* 658 * Read 16 bits at address 'addr' from the serial EEPROM. 659 * DON'T PLAY WITH THIS CODE UNLESS YOU KNOW *EXACTLY* WHAT YOU'RE DOING! 660 */ 661 static u_int16_t 662 iwi_read_prom_word(struct iwi_softc *sc, u_int8_t addr) 663 { 664 u_int32_t tmp; 665 u_int16_t val; 666 int n; 667 668 /* Clock C once before the first command */ 669 IWI_EEPROM_CTL(sc, 0); 670 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 671 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 672 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 673 674 /* Write start bit (1) */ 675 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 676 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 677 678 /* Write READ opcode (10) */ 679 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 680 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 681 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 682 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 683 684 /* Write address A7-A0 */ 685 for (n = 7; n >= 0; n--) { 686 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 687 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 688 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 689 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 690 } 691 692 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 693 694 /* Read data Q15-Q0 */ 695 val = 0; 696 for (n = 15; n >= 0; n--) { 697 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 698 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 699 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 700 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 701 } 702 703 IWI_EEPROM_CTL(sc, 0); 704 705 /* Clear Chip Select and clock C */ 706 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 707 IWI_EEPROM_CTL(sc, 0); 708 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 709 710 return be16toh(val); 711 } 712 713 /* 714 * XXX: Hack to set the current channel to the value advertised in beacons or 715 * probe responses. Only used during AP detection. 716 */ 717 static void 718 iwi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 719 { 720 struct ieee80211_frame *wh; 721 u_int8_t subtype; 722 u_int8_t *frm, *efrm; 723 724 wh = mtod(m, struct ieee80211_frame *); 725 726 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 727 return; 728 729 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 730 731 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 732 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 733 return; 734 735 frm = (u_int8_t *)(wh + 1); 736 efrm = mtod(m, u_int8_t *) + m->m_len; 737 738 frm += 12; /* skip tstamp, bintval and capinfo fields */ 739 while (frm < efrm) { 740 if (*frm == IEEE80211_ELEMID_DSPARMS) 741 #if IEEE80211_CHAN_MAX < 255 742 if (frm[2] <= IEEE80211_CHAN_MAX) 743 #endif 744 ic->ic_bss->ni_chan = &ic->ic_channels[frm[2]]; 745 746 frm += frm[1] + 2; 747 } 748 } 749 750 static void 751 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_buf *buf, int i, 752 struct iwi_frame *frame) 753 { 754 struct ieee80211com *ic = &sc->sc_ic; 755 struct ifnet *ifp = &ic->ic_if; 756 struct mbuf *m; 757 struct ieee80211_frame *wh; 758 struct ieee80211_node *ni; 759 int error; 760 761 DPRINTFN(5, ("RX!DATA!%u!%u!%u\n", le16toh(frame->len), frame->chan, 762 frame->rssi_dbm)); 763 764 bus_dmamap_sync(sc->sc_dmat, buf->map, sizeof (struct iwi_hdr), 765 sizeof (struct iwi_frame) + le16toh(frame->len), 766 BUS_DMASYNC_POSTREAD); 767 768 if (le16toh(frame->len) < sizeof (struct ieee80211_frame_min) || 769 le16toh(frame->len) > MCLBYTES) { 770 aprint_error("%s: bad frame length\n", sc->sc_dev.dv_xname); 771 } 772 773 bus_dmamap_unload(sc->sc_dmat, buf->map); 774 775 /* Finalize mbuf */ 776 m = buf->m; 777 m->m_pkthdr.rcvif = ifp; 778 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 779 sizeof (struct iwi_frame) + le16toh(frame->len); 780 781 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 782 783 wh = mtod(m, struct ieee80211_frame *); 784 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 785 /* 786 * Hardware decrypts the frame itself but leaves the WEP bit 787 * set in the 802.11 header and don't remove the iv and crc 788 * fields 789 */ 790 wh->i_fc[1] &= ~IEEE80211_FC1_WEP; 791 memmove((char *)wh + IEEE80211_WEP_IVLEN + 792 IEEE80211_WEP_KIDLEN, wh, sizeof (struct ieee80211_frame)); 793 m_adj(m, IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN); 794 m_adj(m, -IEEE80211_WEP_CRCLEN); 795 wh = mtod(m, struct ieee80211_frame *); 796 } 797 798 #if NBPFILTER > 0 799 if (sc->sc_drvbpf != NULL) { 800 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 801 802 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m); 803 } 804 #endif 805 806 if (ic->ic_state == IEEE80211_S_SCAN) 807 iwi_fix_channel(ic, m); 808 809 ni = ieee80211_find_rxnode(ic, wh); 810 811 /* Send the frame to the upper layer */ 812 ieee80211_input(ifp, m, ni, IWI_RSSIDBM2RAW(frame->rssi_dbm), 0); 813 814 ieee80211_release_node(ic, ni); 815 816 MGETHDR(buf->m, M_DONTWAIT, MT_DATA); 817 if (buf->m == NULL) { 818 aprint_error("%s: could not allocate rx mbuf\n", 819 sc->sc_dev.dv_xname); 820 return; 821 } 822 823 MCLGET(buf->m, M_DONTWAIT); 824 if (!(buf->m->m_flags & M_EXT)) { 825 aprint_error("%s: could not allocate rx mbuf cluster\n", 826 sc->sc_dev.dv_xname); 827 m_freem(buf->m); 828 buf->m = NULL; 829 return; 830 } 831 832 error = bus_dmamap_load(sc->sc_dmat, buf->map, mtod(buf->m, void *), 833 MCLBYTES, NULL, BUS_DMA_NOWAIT); 834 if (error != 0) { 835 aprint_error("%s: could not load rx buf DMA map\n", 836 sc->sc_dev.dv_xname); 837 m_freem(buf->m); 838 buf->m = NULL; 839 return; 840 } 841 842 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, buf->map->dm_segs[0].ds_addr); 843 } 844 845 static void 846 iwi_notification_intr(struct iwi_softc *sc, struct iwi_rx_buf *buf, 847 struct iwi_notif *notif) 848 { 849 struct ieee80211com *ic = &sc->sc_ic; 850 struct iwi_notif_scan_channel *chan; 851 struct iwi_notif_scan_complete *scan; 852 struct iwi_notif_authentication *auth; 853 struct iwi_notif_association *assoc; 854 855 bus_dmamap_sync(sc->sc_dmat, buf->map, sizeof (struct iwi_hdr), 856 sizeof (struct iwi_notif) + le16toh(notif->len), 857 BUS_DMASYNC_POSTREAD); 858 859 switch (notif->type) { 860 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 861 chan = (struct iwi_notif_scan_channel *)(notif + 1); 862 863 DPRINTFN(2, ("Scan channel (%u)\n", chan->nchan)); 864 break; 865 866 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 867 scan = (struct iwi_notif_scan_complete *)(notif + 1); 868 869 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 870 scan->status)); 871 872 ieee80211_end_scan(ic); 873 break; 874 875 case IWI_NOTIF_TYPE_AUTHENTICATION: 876 auth = (struct iwi_notif_authentication *)(notif + 1); 877 878 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 879 880 switch (auth->state) { 881 case IWI_AUTHENTICATED: 882 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 883 break; 884 885 case IWI_DEAUTHENTICATED: 886 break; 887 888 default: 889 aprint_error("%s: unknown authentication state %u\n", 890 sc->sc_dev.dv_xname, auth->state); 891 } 892 break; 893 894 case IWI_NOTIF_TYPE_ASSOCIATION: 895 assoc = (struct iwi_notif_association *)(notif + 1); 896 897 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 898 assoc->status)); 899 900 switch (assoc->state) { 901 case IWI_ASSOCIATED: 902 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 903 break; 904 905 case IWI_DEASSOCIATED: 906 ieee80211_begin_scan(ic); 907 break; 908 909 default: 910 aprint_error("%s: unknown association state %u\n", 911 sc->sc_dev.dv_xname, assoc->state); 912 } 913 break; 914 915 case IWI_NOTIF_TYPE_CALIBRATION: 916 case IWI_NOTIF_TYPE_BEACON: 917 case IWI_NOTIF_TYPE_NOISE: 918 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 919 break; 920 921 default: 922 aprint_error("%s: unknown notification type %u\n", 923 sc->sc_dev.dv_xname, notif->type); 924 } 925 } 926 927 static void 928 iwi_rx_intr(struct iwi_softc *sc) 929 { 930 struct iwi_rx_buf *buf; 931 struct iwi_hdr *hdr; 932 u_int32_t r, i; 933 934 r = CSR_READ_4(sc, IWI_CSR_RX_READ_INDEX); 935 936 for (i = (sc->rx_cur + 1) % IWI_RX_RING_SIZE; i != r; 937 i = (i + 1) % IWI_RX_RING_SIZE) { 938 939 buf = &sc->rx_buf[i]; 940 941 bus_dmamap_sync(sc->sc_dmat, buf->map, 0, 942 sizeof (struct iwi_hdr), BUS_DMASYNC_POSTREAD); 943 944 hdr = mtod(buf->m, struct iwi_hdr *); 945 946 switch (hdr->type) { 947 case IWI_HDR_TYPE_FRAME: 948 iwi_frame_intr(sc, buf, i, 949 (struct iwi_frame *)(hdr + 1)); 950 break; 951 952 case IWI_HDR_TYPE_NOTIF: 953 iwi_notification_intr(sc, buf, 954 (struct iwi_notif *)(hdr + 1)); 955 break; 956 957 default: 958 aprint_error("%s: unknown hdr type %u\n", 959 sc->sc_dev.dv_xname, hdr->type); 960 } 961 } 962 963 /* Tell the firmware what we have processed */ 964 sc->rx_cur = (r == 0) ? IWI_RX_RING_SIZE - 1 : r - 1; 965 CSR_WRITE_4(sc, IWI_CSR_RX_WRITE_INDEX, sc->rx_cur); 966 } 967 968 static void 969 iwi_tx_intr(struct iwi_softc *sc) 970 { 971 struct ieee80211com *ic = &sc->sc_ic; 972 struct ifnet *ifp = &ic->ic_if; 973 struct iwi_tx_buf *buf; 974 u_int32_t r, i; 975 976 r = CSR_READ_4(sc, IWI_CSR_TX1_READ_INDEX); 977 978 for (i = (sc->tx_old + 1) % IWI_TX_RING_SIZE; i != r; 979 i = (i + 1) % IWI_TX_RING_SIZE) { 980 981 buf = &sc->tx_buf[i]; 982 983 bus_dmamap_unload(sc->sc_dmat, buf->map); 984 m_freem(buf->m); 985 buf->m = NULL; 986 ieee80211_release_node(ic, buf->ni); 987 buf->ni = NULL; 988 989 sc->tx_queued--; 990 991 /* kill watchdog timer */ 992 sc->sc_tx_timer = 0; 993 } 994 995 /* Remember what the firmware has processed */ 996 sc->tx_old = (r == 0) ? IWI_TX_RING_SIZE - 1 : r - 1; 997 998 /* Call start() since some buffer descriptors have been released */ 999 ifp->if_flags &= ~IFF_OACTIVE; 1000 (*ifp->if_start)(ifp); 1001 } 1002 1003 static int 1004 iwi_intr(void *arg) 1005 { 1006 struct iwi_softc *sc = arg; 1007 u_int32_t r; 1008 1009 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1010 return 0; 1011 1012 /* Disable interrupts */ 1013 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1014 1015 DPRINTFN(8, ("INTR!0x%08x\n", r)); 1016 1017 if (r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)) { 1018 aprint_error("%s: fatal error\n", sc->sc_dev.dv_xname); 1019 iwi_stop(&sc->sc_ic.ic_if, 1); 1020 } 1021 1022 if (r & IWI_INTR_FW_INITED) { 1023 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1024 wakeup(sc); 1025 } 1026 1027 if (r & IWI_INTR_RADIO_OFF) { 1028 DPRINTF(("radio transmitter off\n")); 1029 iwi_stop(&sc->sc_ic.ic_if, 1); 1030 } 1031 1032 if (r & IWI_INTR_RX_TRANSFER) 1033 iwi_rx_intr(sc); 1034 1035 if (r & IWI_INTR_CMD_TRANSFER) 1036 wakeup(sc); 1037 1038 if (r & IWI_INTR_TX1_TRANSFER) 1039 iwi_tx_intr(sc); 1040 1041 /* Acknowledge interrupts */ 1042 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1043 1044 /* Re-enable interrupts */ 1045 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1046 1047 return 1; 1048 } 1049 1050 static int 1051 iwi_cmd(struct iwi_softc *sc, u_int8_t type, void *data, u_int8_t len, 1052 int async) 1053 { 1054 struct iwi_cmd_desc *desc; 1055 1056 DPRINTFN(2, ("TX!CMD!%u!%u\n", type, len)); 1057 1058 desc = &sc->cmd_desc[sc->cmd_cur]; 1059 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1060 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1061 desc->type = type; 1062 desc->len = len; 1063 memcpy(desc->data, data, len); 1064 1065 bus_dmamap_sync(sc->sc_dmat, sc->cmd_ring_map, 1066 sc->cmd_cur * sizeof (struct iwi_cmd_desc), 1067 sizeof (struct iwi_cmd_desc), BUS_DMASYNC_PREWRITE); 1068 1069 sc->cmd_cur = (sc->cmd_cur + 1) % IWI_CMD_RING_SIZE; 1070 CSR_WRITE_4(sc, IWI_CSR_CMD_WRITE_INDEX, sc->cmd_cur); 1071 1072 return async ? 0 : tsleep(sc, 0, "iwicmd", hz); 1073 } 1074 1075 static int 1076 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1077 { 1078 struct iwi_softc *sc = ifp->if_softc; 1079 struct ieee80211com *ic = &sc->sc_ic; 1080 struct ieee80211_frame *wh; 1081 struct iwi_tx_buf *buf; 1082 struct iwi_tx_desc *desc; 1083 struct mbuf *mnew; 1084 int error, i; 1085 1086 #if NBPFILTER > 0 1087 if (sc->sc_drvbpf != NULL) { 1088 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1089 1090 tap->wt_flags = 0; 1091 tap->wt_chan_freq = htole16(ic->ic_bss->ni_chan->ic_freq); 1092 tap->wt_chan_flags = htole16(ic->ic_bss->ni_chan->ic_flags); 1093 1094 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1095 } 1096 #endif 1097 1098 buf = &sc->tx_buf[sc->tx_cur]; 1099 desc = &sc->tx_desc[sc->tx_cur]; 1100 1101 wh = mtod(m0, struct ieee80211_frame *); 1102 1103 /* trim IEEE802.11 header */ 1104 m_adj(m0, sizeof (struct ieee80211_frame)); 1105 1106 error = bus_dmamap_load_mbuf(sc->sc_dmat, buf->map, m0, BUS_DMA_NOWAIT); 1107 if (error != 0 && error != EFBIG) { 1108 aprint_error("%s: could not map mbuf (error %d)\n", 1109 sc->sc_dev.dv_xname, error); 1110 m_freem(m0); 1111 return error; 1112 } 1113 if (error != 0) { 1114 /* too many fragments, linearize */ 1115 1116 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1117 if (mnew == NULL) { 1118 m_freem(m0); 1119 return ENOMEM; 1120 } 1121 1122 M_COPY_PKTHDR(mnew, m0); 1123 MCLGET(mnew, M_DONTWAIT); 1124 if (!(mnew->m_flags & M_EXT)) { 1125 m_freem(m0); 1126 m_freem(mnew); 1127 return ENOMEM; 1128 } 1129 1130 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, caddr_t)); 1131 m_freem(m0); 1132 mnew->m_len = mnew->m_pkthdr.len; 1133 m0 = mnew; 1134 1135 error = bus_dmamap_load_mbuf(sc->sc_dmat, buf->map, m0, 1136 BUS_DMA_NOWAIT); 1137 if (error != 0) { 1138 aprint_error("%s: could not map mbuf (error %d)\n", 1139 sc->sc_dev.dv_xname, error); 1140 m_freem(m0); 1141 return error; 1142 } 1143 } 1144 1145 buf->m = m0; 1146 buf->ni = ni; 1147 1148 desc->hdr.type = IWI_HDR_TYPE_DATA; 1149 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1150 desc->cmd = IWI_DATA_CMD_TX; 1151 desc->len = htole16(m0->m_pkthdr.len); 1152 desc->flags = 0; 1153 if (ic->ic_opmode == IEEE80211_M_IBSS) { 1154 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) 1155 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1156 } else if (!IEEE80211_IS_MULTICAST(wh->i_addr3)) 1157 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1158 1159 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 1160 wh->i_fc[1] |= IEEE80211_FC1_WEP; 1161 desc->wep_txkey = ic->ic_wep_txkey; 1162 } else 1163 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1164 1165 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1166 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1167 1168 memcpy(&desc->wh, wh, sizeof (struct ieee80211_frame)); 1169 desc->nseg = htole32(buf->map->dm_nsegs); 1170 for (i = 0; i < buf->map->dm_nsegs; i++) { 1171 desc->seg_addr[i] = htole32(buf->map->dm_segs[i].ds_addr); 1172 desc->seg_len[i] = htole32(buf->map->dm_segs[i].ds_len); 1173 } 1174 1175 bus_dmamap_sync(sc->sc_dmat, sc->tx_ring_map, 1176 sc->tx_cur * sizeof (struct iwi_tx_desc), 1177 sizeof (struct iwi_tx_desc), BUS_DMASYNC_PREWRITE); 1178 1179 bus_dmamap_sync(sc->sc_dmat, buf->map, 0, MCLBYTES, 1180 BUS_DMASYNC_PREWRITE); 1181 1182 DPRINTFN(5, ("TX!DATA!%u!%u\n", desc->len, desc->nseg)); 1183 1184 /* Inform firmware about this new packet */ 1185 sc->tx_queued++; 1186 sc->tx_cur = (sc->tx_cur + 1) % IWI_TX_RING_SIZE; 1187 CSR_WRITE_4(sc, IWI_CSR_TX1_WRITE_INDEX, sc->tx_cur); 1188 1189 return 0; 1190 } 1191 1192 static void 1193 iwi_start(struct ifnet *ifp) 1194 { 1195 struct iwi_softc *sc = ifp->if_softc; 1196 struct ieee80211com *ic = &sc->sc_ic; 1197 struct mbuf *m0; 1198 struct ieee80211_node *ni; 1199 1200 if (ic->ic_state != IEEE80211_S_RUN) 1201 return; 1202 1203 for (;;) { 1204 IF_DEQUEUE(&ifp->if_snd, m0); 1205 if (m0 == NULL) 1206 break; 1207 1208 if (sc->tx_queued >= IWI_TX_RING_SIZE - 4) { 1209 IF_PREPEND(&ifp->if_snd, m0); 1210 ifp->if_flags |= IFF_OACTIVE; 1211 break; 1212 } 1213 1214 #if NBPFILTER > 0 1215 if (ifp->if_bpf != NULL) 1216 bpf_mtap(ifp->if_bpf, m0); 1217 #endif 1218 1219 m0 = ieee80211_encap(ifp, m0, &ni); 1220 if (m0 == NULL) 1221 continue; 1222 1223 #if NBPFILTER > 0 1224 if (ic->ic_rawbpf != NULL) 1225 bpf_mtap(ic->ic_rawbpf, m0); 1226 #endif 1227 1228 if (iwi_tx_start(ifp, m0, ni) != 0) { 1229 if (ni != NULL) 1230 ieee80211_release_node(ic, ni); 1231 break; 1232 } 1233 1234 /* start watchdog timer */ 1235 sc->sc_tx_timer = 5; 1236 ifp->if_timer = 1; 1237 } 1238 } 1239 1240 static void 1241 iwi_watchdog(struct ifnet *ifp) 1242 { 1243 struct iwi_softc *sc = ifp->if_softc; 1244 1245 ifp->if_timer = 0; 1246 1247 if (sc->sc_tx_timer > 0) { 1248 if (--sc->sc_tx_timer == 0) { 1249 aprint_error("%s: device timeout\n", 1250 sc->sc_dev.dv_xname); 1251 iwi_stop(ifp, 1); 1252 return; 1253 } 1254 ifp->if_timer = 1; 1255 } 1256 1257 ieee80211_watchdog(ifp); 1258 } 1259 1260 static int 1261 iwi_get_table0(struct iwi_softc *sc, u_int32_t *tbl) 1262 { 1263 u_int32_t size, buf[128]; 1264 1265 if (!(sc->flags & IWI_FLAG_FW_INITED)) { 1266 memset(buf, 0, sizeof buf); 1267 return copyout(buf, tbl, sizeof buf); 1268 } 1269 1270 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 1271 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 1272 1273 return copyout(buf, tbl, sizeof buf); 1274 } 1275 1276 static int 1277 iwi_get_radio(struct iwi_softc *sc, int *ret) 1278 { 1279 int val; 1280 1281 val = (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1 : 0; 1282 return copyout(&val, ret, sizeof val); 1283 } 1284 1285 static int 1286 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1287 { 1288 struct iwi_softc *sc = ifp->if_softc; 1289 struct ifreq *ifr; 1290 int s, error = 0; 1291 1292 s = splnet(); 1293 1294 switch (cmd) { 1295 case SIOCSIFFLAGS: 1296 if (ifp->if_flags & IFF_UP) { 1297 if (!(ifp->if_flags & IFF_RUNNING)) 1298 iwi_init(ifp); 1299 } else { 1300 if (ifp->if_flags & IFF_RUNNING) 1301 iwi_stop(ifp, 1); 1302 } 1303 break; 1304 1305 case SIOCGTABLE0: 1306 ifr = (struct ifreq *)data; 1307 error = iwi_get_table0(sc, (u_int32_t *)ifr->ifr_data); 1308 break; 1309 1310 case SIOCGRADIO: 1311 ifr = (struct ifreq *)data; 1312 error = iwi_get_radio(sc, (int *)ifr->ifr_data); 1313 break; 1314 1315 case SIOCSLOADFW: 1316 /* only super-user can do that! */ 1317 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1318 break; 1319 1320 ifr = (struct ifreq *)data; 1321 error = iwi_cache_firmware(sc, ifr->ifr_data); 1322 break; 1323 1324 case SIOCSKILLFW: 1325 /* only super-user can do that! */ 1326 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1327 break; 1328 1329 iwi_stop(ifp, 1); 1330 iwi_free_firmware(sc); 1331 break; 1332 1333 case SIOCG80211AUTH: 1334 ((struct ieee80211_auth *)data)->i_authtype = sc->authmode; 1335 break; 1336 1337 case SIOCS80211AUTH: 1338 /* only super-user can do that! */ 1339 if ((error = suser(curproc->p_ucred, &curproc->p_acflag)) != 0) 1340 break; 1341 1342 sc->authmode = ((struct ieee80211_auth *)data)->i_authtype; 1343 break; 1344 1345 default: 1346 error = ieee80211_ioctl(ifp, cmd, data); 1347 } 1348 1349 if (error == ENETRESET && cmd != SIOCADDMULTI) { 1350 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1351 (IFF_UP | IFF_RUNNING)) 1352 iwi_init(ifp); 1353 error = 0; 1354 } 1355 1356 splx(s); 1357 return error; 1358 } 1359 1360 static void 1361 iwi_stop_master(struct iwi_softc *sc) 1362 { 1363 int ntries; 1364 1365 /* Disable interrupts */ 1366 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1367 1368 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1369 for (ntries = 0; ntries < 5; ntries++) { 1370 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1371 break; 1372 DELAY(10); 1373 } 1374 if (ntries == 5) 1375 aprint_error("%s: timeout waiting for master\n", 1376 sc->sc_dev.dv_xname); 1377 1378 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1379 IWI_RST_PRINCETON_RESET); 1380 1381 sc->flags &= ~IWI_FLAG_FW_INITED; 1382 } 1383 1384 static int 1385 iwi_reset(struct iwi_softc *sc) 1386 { 1387 int i, ntries; 1388 1389 iwi_stop_master(sc); 1390 1391 /* Move adapter to D0 state */ 1392 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1393 IWI_CTL_INIT); 1394 1395 /* Initialize Phase-Locked Level (PLL) */ 1396 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1397 1398 /* Wait for clock stabilization */ 1399 for (ntries = 0; ntries < 1000; ntries++) { 1400 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1401 break; 1402 DELAY(200); 1403 } 1404 if (ntries == 1000) 1405 return EIO; 1406 1407 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1408 IWI_RST_SW_RESET); 1409 1410 DELAY(10); 1411 1412 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1413 IWI_CTL_INIT); 1414 1415 /* Clear NIC memory */ 1416 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1417 for (i = 0; i < 0xc000; i++) 1418 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1419 1420 return 0; 1421 } 1422 1423 static int 1424 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size) 1425 { 1426 u_int16_t *w; 1427 int ntries, i; 1428 1429 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1430 IWI_RST_STOP_MASTER); 1431 for (ntries = 0; ntries < 5; ntries++) { 1432 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1433 break; 1434 DELAY(10); 1435 } 1436 if (ntries == 5) { 1437 aprint_error("%s: timeout waiting for master\n", 1438 sc->sc_dev.dv_xname); 1439 return EIO; 1440 } 1441 1442 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1443 DELAY(5000); 1444 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1445 ~IWI_RST_PRINCETON_RESET); 1446 DELAY(5000); 1447 MEM_WRITE_4(sc, 0x3000e0, 0); 1448 DELAY(1000); 1449 MEM_WRITE_4(sc, 0x300004, 1); 1450 DELAY(1000); 1451 MEM_WRITE_4(sc, 0x300004, 0); 1452 DELAY(1000); 1453 MEM_WRITE_1(sc, 0x200000, 0x00); 1454 MEM_WRITE_1(sc, 0x200000, 0x40); 1455 1456 /* Adapter is buggy, we must set the address for each word */ 1457 for (w = uc; size > 0; w++, size -= 2) 1458 MEM_WRITE_2(sc, 0x200010, *w); 1459 1460 MEM_WRITE_1(sc, 0x200000, 0x00); 1461 MEM_WRITE_1(sc, 0x200000, 0x80); 1462 1463 /* Wait until we get a response in the uc queue */ 1464 for (ntries = 0; ntries < 100; ntries++) { 1465 if (MEM_READ_1(sc, 0x200000) & 1) 1466 break; 1467 DELAY(100); 1468 } 1469 if (ntries == 100) { 1470 aprint_error("%s: timeout waiting for ucode to initialize\n", 1471 sc->sc_dev.dv_xname); 1472 return EIO; 1473 } 1474 1475 /* Empty the uc queue or the firmware will not initialize properly */ 1476 for (i = 0; i < 7; i++) 1477 MEM_READ_4(sc, 0x200004); 1478 1479 MEM_WRITE_1(sc, 0x200000, 0x00); 1480 1481 return 0; 1482 } 1483 1484 /* macro to handle unaligned little endian data in firmware image */ 1485 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1486 static int 1487 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size) 1488 { 1489 bus_dmamap_t map; 1490 bus_dma_segment_t seg; 1491 caddr_t virtaddr; 1492 u_char *p, *end; 1493 u_int32_t sentinel, ctl, src, dst, sum, len, mlen; 1494 int ntries, nsegs, error; 1495 1496 /* Allocate DMA memory for storing firmware image */ 1497 error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, 1498 BUS_DMA_NOWAIT, &map); 1499 if (error != 0) { 1500 aprint_error("%s: could not create firmware DMA map\n", 1501 sc->sc_dev.dv_xname); 1502 goto fail1; 1503 } 1504 1505 /* 1506 * We cannot map fw directly because of some hardware constraints on 1507 * the mapping address. 1508 */ 1509 error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 1510 &nsegs, BUS_DMA_NOWAIT); 1511 if (error != 0) { 1512 aprint_error("%s: could not allocate firmware DMA memory\n", 1513 sc->sc_dev.dv_xname); 1514 goto fail2; 1515 } 1516 1517 error = bus_dmamem_map(sc->sc_dmat, &seg, nsegs, size, &virtaddr, 1518 BUS_DMA_NOWAIT); 1519 if (error != 0) { 1520 aprint_error("%s: could not load firmware DMA map\n", 1521 sc->sc_dev.dv_xname); 1522 goto fail3; 1523 } 1524 1525 error = bus_dmamap_load(sc->sc_dmat, map, virtaddr, size, NULL, 1526 BUS_DMA_NOWAIT); 1527 if (error != 0) { 1528 aprint_error("%s: could not load fw dma map\n", 1529 sc->sc_dev.dv_xname); 1530 goto fail4; 1531 } 1532 1533 /* Copy firmware image to DMA memory */ 1534 memcpy(virtaddr, fw, size); 1535 1536 /* Make sure the adapter will get up-to-date values */ 1537 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 1538 1539 /* Tell the adapter where the command blocks are stored */ 1540 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 1541 1542 /* 1543 * Store command blocks into adapter's internal memory using register 1544 * indirections. The adapter will read the firmware image through DMA 1545 * using information stored in command blocks. 1546 */ 1547 src = map->dm_segs[0].ds_addr; 1548 p = virtaddr; 1549 end = p + size; 1550 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 1551 1552 while (p < end) { 1553 dst = GETLE32(p); p += 4; src += 4; 1554 len = GETLE32(p); p += 4; src += 4; 1555 p += len; 1556 1557 while (len > 0) { 1558 mlen = min(len, IWI_CB_MAXDATALEN); 1559 1560 ctl = IWI_CB_DEFAULT_CTL | mlen; 1561 sum = ctl ^ src ^ dst; 1562 1563 /* Write a command block */ 1564 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 1565 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 1566 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 1567 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 1568 1569 src += mlen; 1570 dst += mlen; 1571 len -= mlen; 1572 } 1573 } 1574 1575 /* Write a fictive final command block (sentinel) */ 1576 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 1577 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1578 1579 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1580 ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER)); 1581 1582 /* Tell the adapter to start processing command blocks */ 1583 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 1584 1585 /* Wait until the adapter has processed all command blocks */ 1586 for (ntries = 0; ntries < 400; ntries++) { 1587 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 1588 break; 1589 DELAY(100); 1590 } 1591 if (ntries == 400) { 1592 aprint_error("%s: timeout processing cb\n", 1593 sc->sc_dev.dv_xname); 1594 error = EIO; 1595 goto fail5; 1596 } 1597 1598 /* We're done with command blocks processing */ 1599 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 1600 1601 /* Allow interrupts so we know when the firmware is inited */ 1602 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1603 1604 /* Tell the adapter to initialize the firmware */ 1605 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 1606 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1607 IWI_CTL_ALLOW_STANDBY); 1608 1609 /* Wait at most one second for firmware initialization to complete */ 1610 if ((error = tsleep(sc, 0, "iwiinit", hz)) != 0) { 1611 aprint_error("%s: timeout waiting for firmware initialization " 1612 "to complete\n", sc->sc_dev.dv_xname); 1613 goto fail5; 1614 } 1615 1616 fail5: bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 1617 bus_dmamap_unload(sc->sc_dmat, map); 1618 fail4: bus_dmamem_unmap(sc->sc_dmat, virtaddr, size); 1619 fail3: bus_dmamem_free(sc->sc_dmat, &seg, 1); 1620 fail2: bus_dmamap_destroy(sc->sc_dmat, map); 1621 1622 fail1: return error; 1623 } 1624 1625 /* 1626 * Store firmware into kernel memory so we can download it when we need to, 1627 * e.g when the adapter wakes up from suspend mode. 1628 */ 1629 static int 1630 iwi_cache_firmware(struct iwi_softc *sc, void *data) 1631 { 1632 struct iwi_firmware *kfw = &sc->fw; 1633 struct iwi_firmware ufw; 1634 int error; 1635 1636 iwi_free_firmware(sc); 1637 1638 if ((error = copyin(data, &ufw, sizeof ufw)) != 0) 1639 goto fail1; 1640 1641 kfw->boot_size = ufw.boot_size; 1642 kfw->ucode_size = ufw.ucode_size; 1643 kfw->main_size = ufw.main_size; 1644 1645 kfw->boot = malloc(kfw->boot_size, M_DEVBUF, M_NOWAIT); 1646 if (kfw->boot == NULL) { 1647 error = ENOMEM; 1648 goto fail1; 1649 } 1650 1651 kfw->ucode = malloc(kfw->ucode_size, M_DEVBUF, M_NOWAIT); 1652 if (kfw->ucode == NULL) { 1653 error = ENOMEM; 1654 goto fail2; 1655 } 1656 1657 kfw->main = malloc(kfw->main_size, M_DEVBUF, M_NOWAIT); 1658 if (kfw->main == NULL) { 1659 error = ENOMEM; 1660 goto fail3; 1661 } 1662 1663 if ((error = copyin(ufw.boot, kfw->boot, kfw->boot_size)) != 0) 1664 goto fail4; 1665 1666 if ((error = copyin(ufw.ucode, kfw->ucode, kfw->ucode_size)) != 0) 1667 goto fail4; 1668 1669 if ((error = copyin(ufw.main, kfw->main, kfw->main_size)) != 0) 1670 goto fail4; 1671 1672 DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n", 1673 kfw->boot_size, kfw->ucode_size, kfw->main_size)); 1674 1675 sc->flags |= IWI_FLAG_FW_CACHED; 1676 1677 return 0; 1678 1679 fail4: free(kfw->boot, M_DEVBUF); 1680 fail3: free(kfw->ucode, M_DEVBUF); 1681 fail2: free(kfw->main, M_DEVBUF); 1682 fail1: 1683 return error; 1684 } 1685 1686 static void 1687 iwi_free_firmware(struct iwi_softc *sc) 1688 { 1689 if (!(sc->flags & IWI_FLAG_FW_CACHED)) 1690 return; 1691 1692 free(sc->fw.boot, M_DEVBUF); 1693 free(sc->fw.ucode, M_DEVBUF); 1694 free(sc->fw.main, M_DEVBUF); 1695 1696 sc->flags &= ~IWI_FLAG_FW_CACHED; 1697 } 1698 1699 static int 1700 iwi_config(struct iwi_softc *sc) 1701 { 1702 struct ieee80211com *ic = &sc->sc_ic; 1703 struct ifnet *ifp = &ic->ic_if; 1704 struct iwi_configuration config; 1705 struct iwi_rateset rs; 1706 struct iwi_txpower power; 1707 struct ieee80211_wepkey *k; 1708 struct iwi_wep_key wepkey; 1709 u_int32_t data; 1710 int error, i; 1711 1712 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1713 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 1714 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 1715 IEEE80211_ADDR_LEN, 0); 1716 if (error != 0) 1717 return error; 1718 1719 memset(&config, 0, sizeof config); 1720 config.bluetooth_coexistence = 1; 1721 config.multicast_enabled = 1; 1722 config.noise_reported = 1; 1723 DPRINTF(("Configuring adapter\n")); 1724 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, sizeof config, 1725 0); 1726 if (error != 0) 1727 return error; 1728 1729 data = htole32(IWI_POWER_MODE_CAM); 1730 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 1731 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 1732 if (error != 0) 1733 return error; 1734 1735 data = htole32(ic->ic_rtsthreshold); 1736 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 1737 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 1738 if (error != 0) 1739 return error; 1740 1741 if (ic->ic_opmode == IEEE80211_M_IBSS) { 1742 power.mode = IWI_MODE_11B; 1743 power.nchan = 11; 1744 for (i = 0; i < 11; i++) { 1745 power.chan[i].chan = i + 1; 1746 power.chan[i].power = IWI_TXPOWER_MAX; 1747 } 1748 DPRINTF(("Setting .11b channels tx power\n")); 1749 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 1750 0); 1751 if (error != 0) 1752 return error; 1753 1754 power.mode = IWI_MODE_11G; 1755 DPRINTF(("Setting .11g channels tx power\n")); 1756 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 1757 0); 1758 if (error != 0) 1759 return error; 1760 } 1761 1762 rs.mode = IWI_MODE_11G; 1763 rs.type = IWI_RATESET_TYPE_SUPPORTED; 1764 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 1765 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 1766 rs.nrates); 1767 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 1768 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 1769 if (error != 0) 1770 return error; 1771 1772 rs.mode = IWI_MODE_11A; 1773 rs.type = IWI_RATESET_TYPE_SUPPORTED; 1774 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 1775 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 1776 rs.nrates); 1777 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 1778 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 1779 if (error != 0) 1780 return error; 1781 1782 data = htole32(arc4random()); 1783 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 1784 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0); 1785 if (error != 0) 1786 return error; 1787 1788 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 1789 k = ic->ic_nw_keys; 1790 for (i = 0; i < IEEE80211_WEP_NKID; i++, k++) { 1791 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 1792 wepkey.idx = i; 1793 wepkey.len = k->wk_len; 1794 memset(wepkey.key, 0, sizeof wepkey.key); 1795 memcpy(wepkey.key, k->wk_key, k->wk_len); 1796 DPRINTF(("Setting wep key index %u len %u\n", 1797 wepkey.idx, wepkey.len)); 1798 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 1799 sizeof wepkey, 0); 1800 if (error != 0) 1801 return error; 1802 } 1803 } 1804 1805 /* Enable adapter */ 1806 DPRINTF(("Enabling adapter\n")); 1807 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 1808 } 1809 1810 static int 1811 iwi_scan(struct iwi_softc *sc) 1812 { 1813 struct ieee80211com *ic = &sc->sc_ic; 1814 struct iwi_scan scan; 1815 u_int8_t *p; 1816 int i, count; 1817 1818 memset(&scan, 0, sizeof scan); 1819 scan.type = IWI_SCAN_TYPE_BROADCAST; 1820 scan.intval = htole16(40); 1821 1822 p = scan.channels; 1823 count = 0; 1824 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 1825 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) && 1826 isset(ic->ic_chan_active, i)) { 1827 *++p = i; 1828 count++; 1829 } 1830 } 1831 *(p - count) = IWI_CHAN_5GHZ | count; 1832 1833 count = 0; 1834 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 1835 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) && 1836 isset(ic->ic_chan_active, i)) { 1837 *++p = i; 1838 count++; 1839 } 1840 } 1841 *(p - count) = IWI_CHAN_2GHZ | count; 1842 1843 DPRINTF(("Start scanning\n")); 1844 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 1845 } 1846 1847 static int 1848 iwi_auth_and_assoc(struct iwi_softc *sc) 1849 { 1850 struct ieee80211com *ic = &sc->sc_ic; 1851 struct ieee80211_node *ni = ic->ic_bss; 1852 struct iwi_configuration config; 1853 struct iwi_associate assoc; 1854 struct iwi_rateset rs; 1855 u_int32_t data; 1856 int error; 1857 1858 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 1859 /* enable b/g autodection */ 1860 memset(&config, 0, sizeof config); 1861 config.bluetooth_coexistence = 1; 1862 config.multicast_enabled = 1; 1863 config.bg_autodetection = 1; 1864 config.noise_reported = 1; 1865 DPRINTF(("Configuring adapter\n")); 1866 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, 1867 sizeof config, 1); 1868 if (error != 0) 1869 return error; 1870 } 1871 1872 #ifdef IWI_DEBUG 1873 if (iwi_debug > 0) { 1874 printf("Setting ESSID to "); 1875 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 1876 printf("\n"); 1877 } 1878 #endif 1879 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 1880 if (error != 0) 1881 return error; 1882 1883 /* the rate set has already been "negociated" */ 1884 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 1885 IWI_MODE_11G; 1886 rs.type = IWI_RATESET_TYPE_NEGOCIATED; 1887 rs.nrates = ni->ni_rates.rs_nrates; 1888 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 1889 DPRINTF(("Setting negociated rates (%u)\n", rs.nrates)); 1890 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 1891 if (error != 0) 1892 return error; 1893 1894 data = htole32(ni->ni_rssi); 1895 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 1896 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 1897 if (error != 0) 1898 return error; 1899 1900 memset(&assoc, 0, sizeof assoc); 1901 assoc.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 1902 IWI_MODE_11G; 1903 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1904 if (sc->authmode == IEEE80211_AUTH_SHARED) 1905 assoc.auth = (ic->ic_wep_txkey << 4) | IWI_AUTH_SHARED; 1906 memcpy(assoc.tstamp, ni->ni_tstamp, 8); 1907 assoc.capinfo = htole16(ni->ni_capinfo); 1908 assoc.lintval = htole16(ic->ic_lintval); 1909 assoc.intval = htole16(ni->ni_intval); 1910 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 1911 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 1912 DPRINTF(("Trying to associate to %s channel %u auth %u\n", 1913 ether_sprintf(assoc.bssid), assoc.chan, assoc.auth)); 1914 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 1915 } 1916 1917 static int 1918 iwi_init(struct ifnet *ifp) 1919 { 1920 struct iwi_softc *sc = ifp->if_softc; 1921 struct ieee80211com *ic = &sc->sc_ic; 1922 struct iwi_firmware *fw = &sc->fw; 1923 int i, error; 1924 1925 /* exit immediately if firmware has not been ioctl'd */ 1926 if (!(sc->flags & IWI_FLAG_FW_CACHED)) { 1927 ifp->if_flags &= ~IFF_UP; 1928 return EIO; 1929 } 1930 1931 if ((error = iwi_reset(sc)) != 0) { 1932 aprint_error("%s: could not reset adapter\n", 1933 sc->sc_dev.dv_xname); 1934 goto fail; 1935 } 1936 1937 if ((error = iwi_load_firmware(sc, fw->boot, fw->boot_size)) != 0) { 1938 aprint_error("%s: could not load boot firmware\n", 1939 sc->sc_dev.dv_xname); 1940 goto fail; 1941 } 1942 1943 if ((error = iwi_load_ucode(sc, fw->ucode, fw->ucode_size)) != 0) { 1944 aprint_error("%s: could not load microcode\n", 1945 sc->sc_dev.dv_xname); 1946 goto fail; 1947 } 1948 1949 iwi_stop_master(sc); 1950 1951 sc->tx_cur = 0; 1952 sc->tx_queued = 0; 1953 sc->tx_old = IWI_TX_RING_SIZE - 1; 1954 sc->cmd_cur = 0; 1955 sc->rx_cur = IWI_RX_RING_SIZE - 1; 1956 1957 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmd_ring_map->dm_segs[0].ds_addr); 1958 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, IWI_CMD_RING_SIZE); 1959 CSR_WRITE_4(sc, IWI_CSR_CMD_READ_INDEX, 0); 1960 CSR_WRITE_4(sc, IWI_CSR_CMD_WRITE_INDEX, sc->cmd_cur); 1961 1962 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->tx_ring_map->dm_segs[0].ds_addr); 1963 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, IWI_TX_RING_SIZE); 1964 CSR_WRITE_4(sc, IWI_CSR_TX1_READ_INDEX, 0); 1965 CSR_WRITE_4(sc, IWI_CSR_TX1_WRITE_INDEX, sc->tx_cur); 1966 1967 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->tx_ring_map->dm_segs[0].ds_addr); 1968 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, IWI_TX_RING_SIZE); 1969 CSR_WRITE_4(sc, IWI_CSR_TX2_READ_INDEX, 0); 1970 CSR_WRITE_4(sc, IWI_CSR_TX2_WRITE_INDEX, 0); 1971 1972 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->tx_ring_map->dm_segs[0].ds_addr); 1973 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, IWI_TX_RING_SIZE); 1974 CSR_WRITE_4(sc, IWI_CSR_TX3_READ_INDEX, 0); 1975 CSR_WRITE_4(sc, IWI_CSR_TX3_WRITE_INDEX, 0); 1976 1977 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->tx_ring_map->dm_segs[0].ds_addr); 1978 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, IWI_TX_RING_SIZE); 1979 CSR_WRITE_4(sc, IWI_CSR_TX4_READ_INDEX, 0); 1980 CSR_WRITE_4(sc, IWI_CSR_TX4_WRITE_INDEX, 0); 1981 1982 for (i = 0; i < IWI_RX_RING_SIZE; i++) 1983 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, 1984 sc->rx_buf[i].map->dm_segs[0].ds_addr); 1985 1986 /* 1987 * Kick Rx 1988 */ 1989 CSR_WRITE_4(sc, IWI_CSR_RX_WRITE_INDEX, sc->rx_cur); 1990 CSR_WRITE_4(sc, IWI_CSR_RX_READ_INDEX, 0); 1991 1992 if ((error = iwi_load_firmware(sc, fw->main, fw->main_size)) != 0) { 1993 aprint_error("%s: could not load main firmware\n", 1994 sc->sc_dev.dv_xname); 1995 goto fail; 1996 } 1997 1998 sc->flags |= IWI_FLAG_FW_INITED; 1999 2000 if ((error = iwi_config(sc)) != 0) { 2001 aprint_error("%s: device configuration failed\n", 2002 sc->sc_dev.dv_xname); 2003 goto fail; 2004 } 2005 2006 ieee80211_begin_scan(ic); 2007 2008 ifp->if_flags &= ~IFF_OACTIVE; 2009 ifp->if_flags |= IFF_RUNNING; 2010 2011 return 0; 2012 2013 fail: iwi_stop(ifp, 0); 2014 2015 return error; 2016 } 2017 2018 static void 2019 iwi_stop(struct ifnet *ifp, int disable) 2020 { 2021 struct iwi_softc *sc = ifp->if_softc; 2022 struct ieee80211com *ic = &sc->sc_ic; 2023 struct iwi_tx_buf *buf; 2024 int i; 2025 2026 iwi_stop_master(sc); 2027 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2028 2029 /* 2030 * Release Tx buffers 2031 */ 2032 for (i = 0; i < IWI_TX_RING_SIZE; i++) { 2033 buf = &sc->tx_buf[i]; 2034 2035 if (buf->m != NULL) { 2036 bus_dmamap_unload(sc->sc_dmat, buf->map); 2037 m_freem(buf->m); 2038 buf->m = NULL; 2039 2040 if (buf->ni != NULL) { 2041 ieee80211_release_node(ic, buf->ni); 2042 buf->ni = NULL; 2043 } 2044 } 2045 } 2046 2047 ifp->if_timer = 0; 2048 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2049 2050 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2051 } 2052
Indexes created Fri Oct 03 02:09:57 GMT 2025