1 /* $FreeBSD$ */ 2 3 /*- 4 * Copyright (c) 2004-2006 5 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 6 * Copyright (c) 2006 Sam Leffler, Errno Consulting 7 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice unmodified, this list of conditions, and the following 14 * disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 /*- 36 * Intel(R) PRO/Wireless 2100 MiniPCI driver 37 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 38 */ 39 40 #include <sys/param.h> 41 #include <sys/sysctl.h> 42 #include <sys/sockio.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/queue.h> 49 #include <sys/taskqueue.h> 50 #include <sys/module.h> 51 #include <sys/bus.h> 52 #include <sys/endian.h> 53 #include <sys/linker.h> 54 #include <sys/firmware.h> 55 56 #include <machine/bus.h> 57 #include <machine/resource.h> 58 #include <sys/rman.h> 59 60 #include <dev/pci/pcireg.h> 61 #include <dev/pci/pcivar.h> 62 63 #include <net/bpf.h> 64 #include <net/if.h> 65 #include <net/if_arp.h> 66 #include <net/ethernet.h> 67 #include <net/if_dl.h> 68 #include <net/if_media.h> 69 #include <net/if_types.h> 70 71 #include <net80211/ieee80211_var.h> 72 #include <net80211/ieee80211_radiotap.h> 73 74 #include <netinet/in.h> 75 #include <netinet/in_systm.h> 76 #include <netinet/in_var.h> 77 #include <netinet/ip.h> 78 #include <netinet/if_ether.h> 79 80 #include <dev/ipw/if_ipwreg.h> 81 #include <dev/ipw/if_ipwvar.h> 82 83 #define IPW_DEBUG 84 #ifdef IPW_DEBUG 85 #define DPRINTF(x) do { if (ipw_debug > 0) printf x; } while (0) 86 #define DPRINTFN(n, x) do { if (ipw_debug >= (n)) printf x; } while (0) 87 int ipw_debug = 0; 88 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level"); 89 #else 90 #define DPRINTF(x) 91 #define DPRINTFN(n, x) 92 #endif 93 94 MODULE_DEPEND(ipw, pci, 1, 1, 1); 95 MODULE_DEPEND(ipw, wlan, 1, 1, 1); 96 MODULE_DEPEND(ipw, firmware, 1, 1, 1); 97 98 struct ipw_ident { 99 uint16_t vendor; 100 uint16_t device; 101 const char *name; 102 }; 103 104 static const struct ipw_ident ipw_ident_table[] = { 105 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" }, 106 107 { 0, 0, NULL } 108 }; 109 110 static int ipw_dma_alloc(struct ipw_softc *); 111 static void ipw_release(struct ipw_softc *); 112 static int ipw_media_change(struct ifnet *); 113 static void ipw_media_status(struct ifnet *, struct ifmediareq *); 114 static int ipw_newstate(struct ieee80211com *, enum ieee80211_state, int); 115 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t); 116 static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *); 117 static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *); 118 static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *, 119 struct ipw_soft_bd *, struct ipw_soft_buf *); 120 static void ipw_rx_intr(struct ipw_softc *); 121 static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *); 122 static void ipw_tx_intr(struct ipw_softc *); 123 static void ipw_intr(void *); 124 static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int); 125 static const char * ipw_cmdname(int); 126 static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t); 127 static int ipw_tx_start(struct ifnet *, struct mbuf *, 128 struct ieee80211_node *); 129 static void ipw_start(struct ifnet *); 130 static void ipw_start_locked(struct ifnet *); 131 static void ipw_watchdog(void *); 132 static int ipw_ioctl(struct ifnet *, u_long, caddr_t); 133 static void ipw_stop_master(struct ipw_softc *); 134 static int ipw_enable(struct ipw_softc *); 135 static int ipw_disable(struct ipw_softc *); 136 static int ipw_reset(struct ipw_softc *); 137 static int ipw_load_ucode(struct ipw_softc *, const char *, int); 138 static int ipw_load_firmware(struct ipw_softc *, const char *, int); 139 static int ipw_config(struct ipw_softc *); 140 static void ipw_assoc_task(void *, int); 141 static int ipw_auth_and_assoc(struct ipw_softc *); 142 static void ipw_disassoc_task(void *, int); 143 static int ipw_disassociate(struct ipw_softc *); 144 static void ipw_init_task(void *, int); 145 static void ipw_init(void *); 146 static void ipw_init_locked(struct ipw_softc *, int); 147 static void ipw_stop(void *); 148 static void ipw_stop_locked(struct ipw_softc *); 149 static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS); 150 static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS); 151 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t); 152 static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t); 153 #if 0 154 static int ipw_read_table2(struct ipw_softc *, uint32_t, void *, 155 uint32_t *); 156 static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *, 157 bus_size_t); 158 #endif 159 static void ipw_write_mem_1(struct ipw_softc *, bus_size_t, 160 const uint8_t *, bus_size_t); 161 static void ipw_scan_task(void *, int); 162 static int ipw_scan(struct ipw_softc *); 163 static void ipw_scan_start(struct ieee80211com *); 164 static void ipw_scan_end(struct ieee80211com *); 165 static void ipw_set_channel(struct ieee80211com *); 166 static void ipw_scan_curchan(struct ieee80211com *, unsigned long maxdwell); 167 static void ipw_scan_mindwell(struct ieee80211com *); 168 169 static int ipw_probe(device_t); 170 static int ipw_attach(device_t); 171 static int ipw_detach(device_t); 172 static int ipw_shutdown(device_t); 173 static int ipw_suspend(device_t); 174 static int ipw_resume(device_t); 175 176 static device_method_t ipw_methods[] = { 177 /* Device interface */ 178 DEVMETHOD(device_probe, ipw_probe), 179 DEVMETHOD(device_attach, ipw_attach), 180 DEVMETHOD(device_detach, ipw_detach), 181 DEVMETHOD(device_shutdown, ipw_shutdown), 182 DEVMETHOD(device_suspend, ipw_suspend), 183 DEVMETHOD(device_resume, ipw_resume), 184 185 { 0, 0 } 186 }; 187 188 static driver_t ipw_driver = { 189 "ipw", 190 ipw_methods, 191 sizeof (struct ipw_softc) 192 }; 193 194 static devclass_t ipw_devclass; 195 196 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0); 197 DRIVER_MODULE(ipw, cardbus, ipw_driver, ipw_devclass, 0, 0); 198 199 static int 200 ipw_probe(device_t dev) 201 { 202 const struct ipw_ident *ident; 203 204 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 205 if (pci_get_vendor(dev) == ident->vendor && 206 pci_get_device(dev) == ident->device) { 207 device_set_desc(dev, ident->name); 208 return 0; 209 } 210 } 211 return ENXIO; 212 } 213 214 /* Base Address Register */ 215 #define IPW_PCI_BAR0 0x10 216 217 static int 218 ipw_attach(device_t dev) 219 { 220 struct ipw_softc *sc = device_get_softc(dev); 221 struct ifnet *ifp; 222 struct ieee80211com *ic = &sc->sc_ic; 223 struct ieee80211_channel *c; 224 uint16_t val; 225 int error, i; 226 227 sc->sc_dev = dev; 228 229 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 230 MTX_DEF | MTX_RECURSE); 231 232 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 233 TASK_INIT(&sc->sc_scan_task, 0, ipw_scan_task, sc); 234 TASK_INIT(&sc->sc_assoc_task, 0, ipw_assoc_task, sc); 235 TASK_INIT(&sc->sc_disassoc_task, 0, ipw_disassoc_task, sc); 236 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 237 238 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 239 device_printf(dev, "chip is in D%d power mode " 240 "-- setting to D0\n", pci_get_powerstate(dev)); 241 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 242 } 243 244 pci_write_config(dev, 0x41, 0, 1); 245 246 /* enable bus-mastering */ 247 pci_enable_busmaster(dev); 248 249 sc->mem_rid = IPW_PCI_BAR0; 250 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 251 RF_ACTIVE); 252 if (sc->mem == NULL) { 253 device_printf(dev, "could not allocate memory resource\n"); 254 goto fail; 255 } 256 257 sc->sc_st = rman_get_bustag(sc->mem); 258 sc->sc_sh = rman_get_bushandle(sc->mem); 259 260 sc->irq_rid = 0; 261 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 262 RF_ACTIVE | RF_SHAREABLE); 263 if (sc->irq == NULL) { 264 device_printf(dev, "could not allocate interrupt resource\n"); 265 goto fail; 266 } 267 268 if (ipw_reset(sc) != 0) { 269 device_printf(dev, "could not reset adapter\n"); 270 goto fail; 271 } 272 273 if (ipw_dma_alloc(sc) != 0) { 274 device_printf(dev, "could not allocate DMA resources\n"); 275 goto fail; 276 } 277 278 ifp = sc->sc_ifp = if_alloc(IFT_ETHER); 279 if (ifp == NULL) { 280 device_printf(dev, "can not if_alloc()\n"); 281 goto fail; 282 } 283 284 ifp->if_softc = sc; 285 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 286 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 287 ifp->if_init = ipw_init; 288 ifp->if_ioctl = ipw_ioctl; 289 ifp->if_start = ipw_start; 290 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 291 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 292 IFQ_SET_READY(&ifp->if_snd); 293 294 ic->ic_ifp = ifp; 295 ic->ic_phytype = IEEE80211_T_DS; 296 ic->ic_opmode = IEEE80211_M_STA; 297 ic->ic_state = IEEE80211_S_INIT; 298 299 /* set device capabilities */ 300 ic->ic_caps = IEEE80211_C_IBSS /* IBSS mode supported */ 301 | IEEE80211_C_MONITOR /* monitor mode supported */ 302 | IEEE80211_C_PMGT /* power save supported */ 303 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 304 | IEEE80211_C_WPA /* 802.11i supported */ 305 ; 306 307 /* read MAC address from EEPROM */ 308 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 309 ic->ic_myaddr[0] = val >> 8; 310 ic->ic_myaddr[1] = val & 0xff; 311 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 312 ic->ic_myaddr[2] = val >> 8; 313 ic->ic_myaddr[3] = val & 0xff; 314 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 315 ic->ic_myaddr[4] = val >> 8; 316 ic->ic_myaddr[5] = val & 0xff; 317 318 /* set supported .11b channels (read from EEPROM) */ 319 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 320 val = 0x7ff; /* default to channels 1-11 */ 321 val <<= 1; 322 for (i = 1; i < 16; i++) { 323 if (val & (1 << i)) { 324 c = &ic->ic_channels[ic->ic_nchans++]; 325 c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 326 c->ic_flags = IEEE80211_CHAN_B; 327 c->ic_ieee = i; 328 } 329 } 330 331 /* check support for radio transmitter switch in EEPROM */ 332 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 333 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 334 335 ieee80211_ifattach(ic); 336 /* override state transition machine */ 337 sc->sc_newstate = ic->ic_newstate; 338 ic->ic_newstate = ipw_newstate; 339 ieee80211_media_init(ic, ipw_media_change, ipw_media_status); 340 341 ic->ic_scan_start = ipw_scan_start; 342 ic->ic_scan_end = ipw_scan_end; 343 ic->ic_set_channel = ipw_set_channel; 344 ic->ic_scan_curchan = ipw_scan_curchan; 345 ic->ic_scan_mindwell = ipw_scan_mindwell; 346 347 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 348 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap), 349 &sc->sc_drvbpf); 350 351 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 352 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 353 sc->sc_rxtap.wr_ihdr.it_present = htole32(IPW_RX_RADIOTAP_PRESENT); 354 355 sc->sc_txtap_len = sizeof sc->sc_txtap; 356 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 357 sc->sc_txtap.wt_ihdr.it_present = htole32(IPW_TX_RADIOTAP_PRESENT); 358 359 /* 360 * Add a few sysctl knobs. 361 */ 362 sc->dwelltime = 100; 363 364 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 365 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 366 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 367 "radio transmitter switch state (0=off, 1=on)"); 368 369 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 370 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 371 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 372 "statistics"); 373 374 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 375 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell", 376 CTLFLAG_RW, &sc->dwelltime, 0, 377 "channel dwell time (ms) for AP/station scanning"); 378 379 /* 380 * Hook our interrupt after all initialization is complete. 381 */ 382 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 383 NULL, ipw_intr, sc, &sc->sc_ih); 384 if (error != 0) { 385 device_printf(dev, "could not set up interrupt\n"); 386 goto fail; 387 } 388 389 if (bootverbose) 390 ieee80211_announce(ic); 391 392 return 0; 393 394 fail: ipw_detach(dev); 395 return ENXIO; 396 } 397 398 static int 399 ipw_detach(device_t dev) 400 { 401 struct ipw_softc *sc = device_get_softc(dev); 402 struct ieee80211com *ic = &sc->sc_ic; 403 struct ifnet *ifp = ic->ic_ifp; 404 405 ipw_stop(sc); 406 callout_drain(&sc->sc_wdtimer); 407 taskqueue_drain(taskqueue_fast, &sc->sc_init_task); 408 taskqueue_drain(taskqueue_fast, &sc->sc_scan_task); 409 taskqueue_drain(taskqueue_fast, &sc->sc_assoc_task); 410 taskqueue_drain(taskqueue_fast, &sc->sc_disassoc_task); 411 412 if (ifp != NULL) { 413 bpfdetach(ifp); 414 ieee80211_ifdetach(ic); 415 } 416 417 ipw_release(sc); 418 419 if (sc->irq != NULL) { 420 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 421 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 422 } 423 424 if (sc->mem != NULL) 425 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 426 427 if (ifp != NULL) 428 if_free(ifp); 429 430 if (sc->sc_firmware != NULL) { 431 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 432 sc->sc_firmware = NULL; 433 } 434 435 mtx_destroy(&sc->sc_mtx); 436 437 return 0; 438 } 439 440 static int 441 ipw_dma_alloc(struct ipw_softc *sc) 442 { 443 struct ipw_soft_bd *sbd; 444 struct ipw_soft_hdr *shdr; 445 struct ipw_soft_buf *sbuf; 446 bus_addr_t physaddr; 447 int error, i; 448 449 /* 450 * Allocate and map tx ring. 451 */ 452 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 453 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 454 NULL, &sc->tbd_dmat); 455 if (error != 0) { 456 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 457 goto fail; 458 } 459 460 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 461 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 462 if (error != 0) { 463 device_printf(sc->sc_dev, 464 "could not allocate tx ring DMA memory\n"); 465 goto fail; 466 } 467 468 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 469 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 470 if (error != 0) { 471 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 472 goto fail; 473 } 474 475 /* 476 * Allocate and map rx ring. 477 */ 478 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 479 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 480 NULL, &sc->rbd_dmat); 481 if (error != 0) { 482 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 483 goto fail; 484 } 485 486 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 487 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 488 if (error != 0) { 489 device_printf(sc->sc_dev, 490 "could not allocate rx ring DMA memory\n"); 491 goto fail; 492 } 493 494 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 495 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 496 if (error != 0) { 497 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 498 goto fail; 499 } 500 501 /* 502 * Allocate and map status ring. 503 */ 504 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 505 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 506 NULL, NULL, &sc->status_dmat); 507 if (error != 0) { 508 device_printf(sc->sc_dev, 509 "could not create status ring DMA tag\n"); 510 goto fail; 511 } 512 513 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 514 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 515 if (error != 0) { 516 device_printf(sc->sc_dev, 517 "could not allocate status ring DMA memory\n"); 518 goto fail; 519 } 520 521 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 522 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 523 0); 524 if (error != 0) { 525 device_printf(sc->sc_dev, 526 "could not map status ring DMA memory\n"); 527 goto fail; 528 } 529 530 /* 531 * Allocate command DMA map. 532 */ 533 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 534 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 535 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 536 if (error != 0) { 537 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 538 goto fail; 539 } 540 541 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 542 if (error != 0) { 543 device_printf(sc->sc_dev, 544 "could not create command DMA map\n"); 545 goto fail; 546 } 547 548 /* 549 * Allocate headers DMA maps. 550 */ 551 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 552 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 553 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 554 if (error != 0) { 555 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 556 goto fail; 557 } 558 559 SLIST_INIT(&sc->free_shdr); 560 for (i = 0; i < IPW_NDATA; i++) { 561 shdr = &sc->shdr_list[i]; 562 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 563 if (error != 0) { 564 device_printf(sc->sc_dev, 565 "could not create header DMA map\n"); 566 goto fail; 567 } 568 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 569 } 570 571 /* 572 * Allocate tx buffers DMA maps. 573 */ 574 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 575 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 576 NULL, NULL, &sc->txbuf_dmat); 577 if (error != 0) { 578 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 579 goto fail; 580 } 581 582 SLIST_INIT(&sc->free_sbuf); 583 for (i = 0; i < IPW_NDATA; i++) { 584 sbuf = &sc->tx_sbuf_list[i]; 585 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 586 if (error != 0) { 587 device_printf(sc->sc_dev, 588 "could not create tx DMA map\n"); 589 goto fail; 590 } 591 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 592 } 593 594 /* 595 * Initialize tx ring. 596 */ 597 for (i = 0; i < IPW_NTBD; i++) { 598 sbd = &sc->stbd_list[i]; 599 sbd->bd = &sc->tbd_list[i]; 600 sbd->type = IPW_SBD_TYPE_NOASSOC; 601 } 602 603 /* 604 * Pre-allocate rx buffers and DMA maps. 605 */ 606 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 607 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 608 NULL, &sc->rxbuf_dmat); 609 if (error != 0) { 610 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 611 goto fail; 612 } 613 614 for (i = 0; i < IPW_NRBD; i++) { 615 sbd = &sc->srbd_list[i]; 616 sbuf = &sc->rx_sbuf_list[i]; 617 sbd->bd = &sc->rbd_list[i]; 618 619 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 620 if (sbuf->m == NULL) { 621 device_printf(sc->sc_dev, 622 "could not allocate rx mbuf\n"); 623 error = ENOMEM; 624 goto fail; 625 } 626 627 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 628 if (error != 0) { 629 device_printf(sc->sc_dev, 630 "could not create rx DMA map\n"); 631 goto fail; 632 } 633 634 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 635 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 636 &physaddr, 0); 637 if (error != 0) { 638 device_printf(sc->sc_dev, 639 "could not map rx DMA memory\n"); 640 goto fail; 641 } 642 643 sbd->type = IPW_SBD_TYPE_DATA; 644 sbd->priv = sbuf; 645 sbd->bd->physaddr = htole32(physaddr); 646 sbd->bd->len = htole32(MCLBYTES); 647 } 648 649 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 650 651 return 0; 652 653 fail: ipw_release(sc); 654 return error; 655 } 656 657 static void 658 ipw_release(struct ipw_softc *sc) 659 { 660 struct ipw_soft_buf *sbuf; 661 int i; 662 663 if (sc->tbd_dmat != NULL) { 664 if (sc->stbd_list != NULL) { 665 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 666 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, 667 sc->tbd_map); 668 } 669 bus_dma_tag_destroy(sc->tbd_dmat); 670 } 671 672 if (sc->rbd_dmat != NULL) { 673 if (sc->rbd_list != NULL) { 674 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 675 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 676 sc->rbd_map); 677 } 678 bus_dma_tag_destroy(sc->rbd_dmat); 679 } 680 681 if (sc->status_dmat != NULL) { 682 if (sc->status_list != NULL) { 683 bus_dmamap_unload(sc->status_dmat, sc->status_map); 684 bus_dmamem_free(sc->status_dmat, sc->status_list, 685 sc->status_map); 686 } 687 bus_dma_tag_destroy(sc->status_dmat); 688 } 689 690 for (i = 0; i < IPW_NTBD; i++) 691 ipw_release_sbd(sc, &sc->stbd_list[i]); 692 693 if (sc->cmd_dmat != NULL) { 694 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 695 bus_dma_tag_destroy(sc->cmd_dmat); 696 } 697 698 if (sc->hdr_dmat != NULL) { 699 for (i = 0; i < IPW_NDATA; i++) 700 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 701 bus_dma_tag_destroy(sc->hdr_dmat); 702 } 703 704 if (sc->txbuf_dmat != NULL) { 705 for (i = 0; i < IPW_NDATA; i++) { 706 bus_dmamap_destroy(sc->txbuf_dmat, 707 sc->tx_sbuf_list[i].map); 708 } 709 bus_dma_tag_destroy(sc->txbuf_dmat); 710 } 711 712 if (sc->rxbuf_dmat != NULL) { 713 for (i = 0; i < IPW_NRBD; i++) { 714 sbuf = &sc->rx_sbuf_list[i]; 715 if (sbuf->m != NULL) { 716 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 717 BUS_DMASYNC_POSTREAD); 718 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 719 m_freem(sbuf->m); 720 } 721 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 722 } 723 bus_dma_tag_destroy(sc->rxbuf_dmat); 724 } 725 } 726 727 static int 728 ipw_shutdown(device_t dev) 729 { 730 struct ipw_softc *sc = device_get_softc(dev); 731 732 ipw_stop(sc); 733 734 return 0; 735 } 736 737 static int 738 ipw_suspend(device_t dev) 739 { 740 struct ipw_softc *sc = device_get_softc(dev); 741 742 ipw_stop(sc); 743 744 return 0; 745 } 746 747 static int 748 ipw_resume(device_t dev) 749 { 750 struct ipw_softc *sc = device_get_softc(dev); 751 struct ifnet *ifp = sc->sc_ic.ic_ifp; 752 IPW_LOCK_DECL; 753 754 IPW_LOCK(sc); 755 756 pci_write_config(dev, 0x41, 0, 1); 757 758 if (ifp->if_flags & IFF_UP) { 759 ipw_init_locked(sc, 0); 760 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 761 ipw_start_locked(ifp); 762 } 763 764 IPW_UNLOCK(sc); 765 766 return 0; 767 } 768 769 static int 770 ipw_media_change(struct ifnet *ifp) 771 { 772 struct ipw_softc *sc = ifp->if_softc; 773 int error; 774 IPW_LOCK_DECL; 775 776 IPW_LOCK(sc); 777 error = ieee80211_media_change(ifp); 778 if (error == ENETRESET) { 779 if ((ifp->if_flags & IFF_UP) && 780 (ifp->if_drv_flags & IFF_DRV_RUNNING)) 781 ipw_init_locked(sc, 0); 782 error = 0; 783 } 784 IPW_UNLOCK(sc); 785 786 return (error); 787 } 788 789 static int 790 ipw_cvtrate(int ipwrate) 791 { 792 switch (ipwrate) { 793 case IPW_RATE_DS1: return 2; 794 case IPW_RATE_DS2: return 4; 795 case IPW_RATE_DS5: return 11; 796 case IPW_RATE_DS11: return 22; 797 } 798 return 0; 799 } 800 801 /* 802 * The firmware automatically adapts the transmit speed. We report its current 803 * value here. 804 */ 805 static void 806 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 807 { 808 struct ipw_softc *sc = ifp->if_softc; 809 struct ieee80211com *ic = &sc->sc_ic; 810 int rate; 811 812 imr->ifm_status = IFM_AVALID; 813 imr->ifm_active = IFM_IEEE80211; 814 if (ic->ic_state == IEEE80211_S_RUN) 815 imr->ifm_status |= IFM_ACTIVE; 816 817 /* read current transmission rate from adapter */ 818 rate = ipw_cvtrate(ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 819 imr->ifm_active |= ieee80211_rate2media(ic, rate, IEEE80211_MODE_11B); 820 821 switch (ic->ic_opmode) { 822 case IEEE80211_M_STA: 823 break; 824 825 case IEEE80211_M_IBSS: 826 imr->ifm_active |= IFM_IEEE80211_IBSS; 827 break; 828 829 case IEEE80211_M_MONITOR: 830 imr->ifm_active |= IFM_IEEE80211_MONITOR; 831 break; 832 833 case IEEE80211_M_AHDEMO: 834 case IEEE80211_M_HOSTAP: 835 case IEEE80211_M_WDS: 836 /* should not get there */ 837 break; 838 } 839 } 840 841 static int 842 ipw_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 843 { 844 struct ifnet *ifp = ic->ic_ifp; 845 struct ipw_softc *sc = ifp->if_softc; 846 847 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 848 ieee80211_state_name[ic->ic_state], 849 ieee80211_state_name[nstate], sc->flags)); 850 851 switch (nstate) { 852 case IEEE80211_S_RUN: 853 if (ic->ic_opmode == IEEE80211_M_IBSS) { 854 /* 855 * XXX when joining an ibss network we are called 856 * with a SCAN -> RUN transition on scan complete. 857 * Use that to call ipw_auth_and_assoc. On completing 858 * the join we are then called again with an 859 * AUTH -> RUN transition and we want to do nothing. 860 * This is all totally bogus and needs to be redone. 861 */ 862 if (ic->ic_state == IEEE80211_S_SCAN) 863 taskqueue_enqueue_fast(taskqueue_fast, 864 &sc->sc_assoc_task); 865 } 866 break; 867 868 case IEEE80211_S_INIT: 869 if (sc->flags & IPW_FLAG_ASSOCIATED) 870 taskqueue_enqueue_fast(taskqueue_fast, 871 &sc->sc_disassoc_task); 872 break; 873 874 case IEEE80211_S_AUTH: 875 taskqueue_enqueue_fast(taskqueue_fast, &sc->sc_assoc_task); 876 break; 877 878 case IEEE80211_S_ASSOC: 879 /* 880 * If we are not transitioning from AUTH the resend the 881 * association request. 882 */ 883 if (ic->ic_state != IEEE80211_S_AUTH) 884 taskqueue_enqueue_fast(taskqueue_fast, 885 &sc->sc_assoc_task); 886 break; 887 888 default: 889 break; 890 } 891 return (*sc->sc_newstate)(ic, nstate, arg); 892 } 893 894 /* 895 * Read 16 bits at address 'addr' from the serial EEPROM. 896 */ 897 static uint16_t 898 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 899 { 900 uint32_t tmp; 901 uint16_t val; 902 int n; 903 904 /* clock C once before the first command */ 905 IPW_EEPROM_CTL(sc, 0); 906 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 907 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 908 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 909 910 /* write start bit (1) */ 911 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 912 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 913 914 /* write READ opcode (10) */ 915 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 916 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 917 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 918 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 919 920 /* write address A7-A0 */ 921 for (n = 7; n >= 0; n--) { 922 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 923 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 924 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 925 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 926 } 927 928 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 929 930 /* read data Q15-Q0 */ 931 val = 0; 932 for (n = 15; n >= 0; n--) { 933 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 934 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 935 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 936 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 937 } 938 939 IPW_EEPROM_CTL(sc, 0); 940 941 /* clear Chip Select and clock C */ 942 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 943 IPW_EEPROM_CTL(sc, 0); 944 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 945 946 return le16toh(val); 947 } 948 949 static void 950 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 951 { 952 struct ipw_cmd *cmd; 953 954 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 955 956 cmd = mtod(sbuf->m, struct ipw_cmd *); 957 958 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 959 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 960 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 961 le32toh(cmd->status))); 962 963 sc->flags &= ~IPW_FLAG_BUSY; 964 wakeup(sc); 965 } 966 967 static void 968 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 969 { 970 #define IEEESTATE(ic) ieee80211_state_name[ic->ic_state] 971 struct ieee80211com *ic = &sc->sc_ic; 972 uint32_t state; 973 974 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 975 976 state = le32toh(*mtod(sbuf->m, uint32_t *)); 977 978 switch (state) { 979 case IPW_STATE_ASSOCIATED: 980 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 981 IEEESTATE(ic), sc->flags)); 982 sc->flags |= IPW_FLAG_ASSOCIATED; 983 /* XXX suppress state change in case the fw auto-associates */ 984 if (ic->ic_state != IEEE80211_S_ASSOC) { 985 DPRINTF(("Unexpected association (state %u)\n", 986 ic->ic_state)); 987 } else 988 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 989 break; 990 991 case IPW_STATE_SCANNING: 992 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 993 IEEESTATE(ic), sc->flags)); 994 /* 995 * NB: Check driver state for association on assoc 996 * loss as the firmware will immediately start to 997 * scan and we would treat it as a beacon miss if 998 * we checked the 802.11 layer state. 999 */ 1000 if (sc->flags & IPW_FLAG_ASSOCIATED) 1001 ieee80211_beacon_miss(ic); 1002 break; 1003 1004 case IPW_STATE_SCAN_COMPLETE: 1005 /* 1006 * XXX For some reason scan requests generate scan 1007 * started + scan done events before any traffic is 1008 * received (e.g. probe response frames). We work 1009 * around this by marking the HACK flag and skipping 1010 * the first scan complete event. 1011 */ 1012 if (sc->flags & IPW_FLAG_HACK) { 1013 sc->flags &= ~IPW_FLAG_HACK; 1014 break; 1015 } 1016 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1017 IEEESTATE(ic), sc->flags)); 1018 if (sc->flags & IPW_FLAG_SCANNING) { 1019 ieee80211_scan_done(ic); 1020 sc->flags &= ~IPW_FLAG_SCANNING; 1021 sc->sc_scan_timer = 0; 1022 } 1023 break; 1024 1025 case IPW_STATE_ASSOCIATION_LOST: 1026 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1027 IEEESTATE(ic), sc->flags)); 1028 sc->flags &= ~IPW_FLAG_ASSOCIATED; 1029 if (ic->ic_state == IEEE80211_S_RUN) 1030 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 1031 break; 1032 1033 case IPW_STATE_DISABLED: 1034 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1035 IEEESTATE(ic), sc->flags)); 1036 break; 1037 1038 case IPW_STATE_RADIO_DISABLED: 1039 DPRINTFN(2, ("Radio off (%s flags 0x%x)\n", 1040 IEEESTATE(ic), sc->flags)); 1041 ic->ic_ifp->if_flags &= ~IFF_UP; 1042 ipw_stop_locked(sc); 1043 break; 1044 1045 default: 1046 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1047 __func__, state, IEEESTATE(ic), sc->flags)); 1048 break; 1049 } 1050 #undef IEEESTATE 1051 } 1052 1053 /* 1054 * Set driver state for current channel. 1055 */ 1056 static void 1057 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1058 { 1059 struct ieee80211com *ic = &sc->sc_ic; 1060 1061 ic->ic_curchan = chan; 1062 sc->sc_rxtap.wr_chan_freq = sc->sc_txtap.wt_chan_freq = 1063 htole16(ic->ic_curchan->ic_freq); 1064 sc->sc_rxtap.wr_chan_flags = sc->sc_txtap.wt_chan_flags = 1065 htole16(ic->ic_curchan->ic_flags); 1066 } 1067 1068 /* 1069 * XXX: Hack to set the current channel to the value advertised in beacons or 1070 * probe responses. Only used during AP detection. 1071 */ 1072 static void 1073 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1074 { 1075 struct ieee80211com *ic = &sc->sc_ic; 1076 struct ieee80211_channel *c; 1077 struct ieee80211_frame *wh; 1078 uint8_t subtype; 1079 uint8_t *frm, *efrm; 1080 1081 wh = mtod(m, struct ieee80211_frame *); 1082 1083 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1084 return; 1085 1086 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1087 1088 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1089 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1090 return; 1091 1092 frm = (uint8_t *)(wh + 1); 1093 efrm = mtod(m, uint8_t *) + m->m_len; 1094 1095 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1096 while (frm < efrm) { 1097 if (*frm == IEEE80211_ELEMID_DSPARMS) 1098 #if IEEE80211_CHAN_MAX < 255 1099 if (frm[2] <= IEEE80211_CHAN_MAX) 1100 #endif 1101 { 1102 DPRINTF(("Fixing channel to %d\n", frm[2])); 1103 c = ieee80211_find_channel(ic, 1104 ieee80211_ieee2mhz(frm[2], 0), 1105 IEEE80211_CHAN_B); 1106 if (c == NULL) 1107 c = &ic->ic_channels[0]; 1108 ipw_setcurchan(sc, c); 1109 } 1110 1111 frm += frm[1] + 2; 1112 } 1113 } 1114 1115 static void 1116 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1117 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1118 { 1119 struct ieee80211com *ic = &sc->sc_ic; 1120 struct ifnet *ifp = ic->ic_ifp; 1121 struct mbuf *mnew, *m; 1122 struct ieee80211_frame *wh; 1123 struct ieee80211_node *ni; 1124 bus_addr_t physaddr; 1125 int error; 1126 IPW_LOCK_DECL; 1127 1128 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1129 status->rssi)); 1130 1131 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1132 le32toh(status->len) > MCLBYTES) 1133 return; 1134 1135 /* 1136 * Try to allocate a new mbuf for this ring element and load it before 1137 * processing the current mbuf. If the ring element cannot be loaded, 1138 * drop the received packet and reuse the old mbuf. In the unlikely 1139 * case that the old mbuf can't be reloaded either, explicitly panic. 1140 */ 1141 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1142 if (mnew == NULL) { 1143 ifp->if_ierrors++; 1144 return; 1145 } 1146 1147 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1148 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1149 1150 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1151 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1152 if (error != 0) { 1153 m_freem(mnew); 1154 1155 /* try to reload the old mbuf */ 1156 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1157 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1158 &physaddr, 0); 1159 if (error != 0) { 1160 /* very unlikely that it will fail... */ 1161 panic("%s: could not load old rx mbuf", 1162 device_get_name(sc->sc_dev)); 1163 } 1164 ifp->if_ierrors++; 1165 return; 1166 } 1167 1168 /* 1169 * New mbuf successfully loaded, update Rx ring and continue 1170 * processing. 1171 */ 1172 m = sbuf->m; 1173 sbuf->m = mnew; 1174 sbd->bd->physaddr = htole32(physaddr); 1175 1176 /* finalize mbuf */ 1177 m->m_pkthdr.rcvif = ifp; 1178 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1179 1180 if (bpf_peers_present(sc->sc_drvbpf)) { 1181 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1182 1183 tap->wr_flags = 0; 1184 tap->wr_antsignal = status->rssi + IPW_RSSI_TO_DBM; 1185 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 1186 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 1187 1188 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1189 } 1190 1191 if (sc->flags & IPW_FLAG_SCANNING) 1192 ipw_fix_channel(sc, m); 1193 1194 wh = mtod(m, struct ieee80211_frame *); 1195 IPW_UNLOCK(sc); 1196 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1197 1198 /* send the frame to the 802.11 layer */ 1199 ieee80211_input(ic, m, ni, status->rssi, -95/*XXX*/, 0); 1200 1201 /* node is no longer needed */ 1202 ieee80211_free_node(ni); 1203 IPW_LOCK(sc); 1204 1205 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1206 } 1207 1208 static void 1209 ipw_rx_intr(struct ipw_softc *sc) 1210 { 1211 struct ieee80211com *ic = &sc->sc_ic; 1212 struct ipw_status *status; 1213 struct ipw_soft_bd *sbd; 1214 struct ipw_soft_buf *sbuf; 1215 uint32_t r, i; 1216 1217 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1218 return; 1219 1220 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1221 1222 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1223 1224 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1225 status = &sc->status_list[i]; 1226 sbd = &sc->srbd_list[i]; 1227 sbuf = sbd->priv; 1228 1229 switch (le16toh(status->code) & 0xf) { 1230 case IPW_STATUS_CODE_COMMAND: 1231 ipw_rx_cmd_intr(sc, sbuf); 1232 break; 1233 1234 case IPW_STATUS_CODE_NEWSTATE: 1235 ipw_rx_newstate_intr(sc, sbuf); 1236 break; 1237 1238 case IPW_STATUS_CODE_DATA_802_3: 1239 case IPW_STATUS_CODE_DATA_802_11: 1240 ipw_rx_data_intr(sc, status, sbd, sbuf); 1241 break; 1242 1243 case IPW_STATUS_CODE_NOTIFICATION: 1244 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1245 le32toh(status->len), status->flags)); 1246 if (ic->ic_state == IEEE80211_S_AUTH) { 1247 /* XXX assume auth notification */ 1248 ieee80211_node_authorize(ic->ic_bss); 1249 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1250 } 1251 break; 1252 1253 default: 1254 device_printf(sc->sc_dev, "unexpected status code %u\n", 1255 le16toh(status->code)); 1256 } 1257 1258 /* firmware was killed, stop processing received frames */ 1259 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1260 return; 1261 1262 sbd->bd->flags = 0; 1263 } 1264 1265 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1266 1267 /* kick the firmware */ 1268 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1269 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1270 } 1271 1272 static void 1273 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1274 { 1275 struct ipw_soft_hdr *shdr; 1276 struct ipw_soft_buf *sbuf; 1277 1278 switch (sbd->type) { 1279 case IPW_SBD_TYPE_COMMAND: 1280 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1281 BUS_DMASYNC_POSTWRITE); 1282 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1283 break; 1284 1285 case IPW_SBD_TYPE_HEADER: 1286 shdr = sbd->priv; 1287 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1288 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1289 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1290 break; 1291 1292 case IPW_SBD_TYPE_DATA: 1293 sbuf = sbd->priv; 1294 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1295 BUS_DMASYNC_POSTWRITE); 1296 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1297 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1298 1299 if (sbuf->m->m_flags & M_TXCB) 1300 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1301 m_freem(sbuf->m); 1302 ieee80211_free_node(sbuf->ni); 1303 1304 sc->sc_tx_timer = 0; 1305 break; 1306 } 1307 1308 sbd->type = IPW_SBD_TYPE_NOASSOC; 1309 } 1310 1311 static void 1312 ipw_tx_intr(struct ipw_softc *sc) 1313 { 1314 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1315 struct ipw_soft_bd *sbd; 1316 uint32_t r, i; 1317 1318 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1319 return; 1320 1321 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1322 1323 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1324 sbd = &sc->stbd_list[i]; 1325 1326 if (sbd->type == IPW_SBD_TYPE_DATA) 1327 ifp->if_opackets++; 1328 1329 ipw_release_sbd(sc, sbd); 1330 sc->txfree++; 1331 } 1332 1333 /* remember what the firmware has processed */ 1334 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1335 1336 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1337 ipw_start_locked(ifp); 1338 } 1339 1340 static void 1341 ipw_intr(void *arg) 1342 { 1343 struct ipw_softc *sc = arg; 1344 uint32_t r; 1345 IPW_LOCK_DECL; 1346 1347 IPW_LOCK(sc); 1348 1349 if ((r = CSR_READ_4(sc, IPW_CSR_INTR)) == 0 || r == 0xffffffff) { 1350 IPW_UNLOCK(sc); 1351 return; 1352 } 1353 1354 /* disable interrupts */ 1355 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1356 1357 /* acknowledge all interrupts */ 1358 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1359 1360 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1361 device_printf(sc->sc_dev, "firmware error\n"); 1362 taskqueue_enqueue_fast(taskqueue_fast, &sc->sc_init_task); 1363 r = 0; /* don't process more interrupts */ 1364 } 1365 1366 if (r & IPW_INTR_FW_INIT_DONE) 1367 wakeup(sc); 1368 1369 if (r & IPW_INTR_RX_TRANSFER) 1370 ipw_rx_intr(sc); 1371 1372 if (r & IPW_INTR_TX_TRANSFER) 1373 ipw_tx_intr(sc); 1374 1375 /* re-enable interrupts */ 1376 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1377 1378 IPW_UNLOCK(sc); 1379 } 1380 1381 static void 1382 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1383 { 1384 if (error != 0) 1385 return; 1386 1387 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1388 1389 *(bus_addr_t *)arg = segs[0].ds_addr; 1390 } 1391 1392 static const char * 1393 ipw_cmdname(int cmd) 1394 { 1395 #define N(a) (sizeof(a) / sizeof(a[0])) 1396 static const struct { 1397 int cmd; 1398 const char *name; 1399 } cmds[] = { 1400 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1401 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1402 { IPW_CMD_DISABLE, "DISABLE" }, 1403 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1404 { IPW_CMD_ENABLE, "ENABLE" }, 1405 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1406 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1407 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1408 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1409 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1410 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1411 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1412 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1413 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1414 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1415 { IPW_CMD_SET_MODE, "SET_MODE" }, 1416 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1417 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1418 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1419 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1420 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1421 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1422 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1423 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1424 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1425 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1426 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1427 1428 }; 1429 static char buf[12]; 1430 int i; 1431 1432 for (i = 0; i < N(cmds); i++) 1433 if (cmds[i].cmd == cmd) 1434 return cmds[i].name; 1435 snprintf(buf, sizeof(buf), "%u", cmd); 1436 return buf; 1437 #undef N 1438 } 1439 1440 /* 1441 * Send a command to the firmware and wait for the acknowledgement. 1442 */ 1443 static int 1444 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1445 { 1446 struct ipw_soft_bd *sbd; 1447 bus_addr_t physaddr; 1448 int error; 1449 1450 if (sc->flags & IPW_FLAG_BUSY) { 1451 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1452 __func__, ipw_cmdname(type)); 1453 return EAGAIN; 1454 } 1455 sc->flags |= IPW_FLAG_BUSY; 1456 1457 sbd = &sc->stbd_list[sc->txcur]; 1458 1459 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1460 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1461 if (error != 0) { 1462 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1463 sc->flags &= ~IPW_FLAG_BUSY; 1464 return error; 1465 } 1466 1467 sc->cmd.type = htole32(type); 1468 sc->cmd.subtype = 0; 1469 sc->cmd.len = htole32(len); 1470 sc->cmd.seq = 0; 1471 memcpy(sc->cmd.data, data, len); 1472 1473 sbd->type = IPW_SBD_TYPE_COMMAND; 1474 sbd->bd->physaddr = htole32(physaddr); 1475 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1476 sbd->bd->nfrag = 1; 1477 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1478 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1479 1480 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1481 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1482 1483 #ifdef IPW_DEBUG 1484 if (ipw_debug >= 4) { 1485 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1486 0, 0, len); 1487 /* Print the data buffer in the higher debug level */ 1488 if (ipw_debug >= 9 && len > 0) { 1489 printf(" data: 0x"); 1490 for (int i = 1; i <= len; i++) 1491 printf("%1D", (u_char *)data + len - i, ""); 1492 } 1493 printf("\n"); 1494 } 1495 #endif 1496 1497 /* kick firmware */ 1498 sc->txfree--; 1499 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1500 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1501 1502 /* wait at most one second for command to complete */ 1503 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1504 if (error != 0) { 1505 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1506 __func__, ipw_cmdname(type), error); 1507 sc->flags &= ~IPW_FLAG_BUSY; 1508 return (error); 1509 } 1510 return (0); 1511 } 1512 1513 static int 1514 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1515 { 1516 struct ipw_softc *sc = ifp->if_softc; 1517 struct ieee80211com *ic = &sc->sc_ic; 1518 struct ieee80211_frame *wh; 1519 struct ipw_soft_bd *sbd; 1520 struct ipw_soft_hdr *shdr; 1521 struct ipw_soft_buf *sbuf; 1522 struct ieee80211_key *k; 1523 struct mbuf *mnew; 1524 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1525 bus_addr_t physaddr; 1526 int nsegs, error, i; 1527 1528 wh = mtod(m0, struct ieee80211_frame *); 1529 1530 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1531 k = ieee80211_crypto_encap(ic, ni, m0); 1532 if (k == NULL) { 1533 m_freem(m0); 1534 return ENOBUFS; 1535 } 1536 1537 /* packet header may have moved, reset our local pointer */ 1538 wh = mtod(m0, struct ieee80211_frame *); 1539 } 1540 1541 if (bpf_peers_present(sc->sc_drvbpf)) { 1542 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1543 1544 tap->wt_flags = 0; 1545 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1546 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1547 1548 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1549 } 1550 1551 shdr = SLIST_FIRST(&sc->free_shdr); 1552 sbuf = SLIST_FIRST(&sc->free_sbuf); 1553 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1554 1555 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1556 shdr->hdr.subtype = 0; 1557 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0; 1558 shdr->hdr.encrypt = 0; 1559 shdr->hdr.keyidx = 0; 1560 shdr->hdr.keysz = 0; 1561 shdr->hdr.fragmentsz = 0; 1562 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1563 if (ic->ic_opmode == IEEE80211_M_STA) 1564 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1565 else 1566 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1567 1568 /* trim IEEE802.11 header */ 1569 m_adj(m0, sizeof (struct ieee80211_frame)); 1570 1571 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1572 &nsegs, 0); 1573 if (error != 0 && error != EFBIG) { 1574 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1575 error); 1576 m_freem(m0); 1577 return error; 1578 } 1579 if (error != 0) { 1580 mnew = m_defrag(m0, M_DONTWAIT); 1581 if (mnew == NULL) { 1582 device_printf(sc->sc_dev, 1583 "could not defragment mbuf\n"); 1584 m_freem(m0); 1585 return ENOBUFS; 1586 } 1587 m0 = mnew; 1588 1589 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1590 segs, &nsegs, 0); 1591 if (error != 0) { 1592 device_printf(sc->sc_dev, 1593 "could not map mbuf (error %d)\n", error); 1594 m_freem(m0); 1595 return error; 1596 } 1597 } 1598 1599 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1600 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1601 if (error != 0) { 1602 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1603 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1604 m_freem(m0); 1605 return error; 1606 } 1607 1608 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1609 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1610 1611 sbd = &sc->stbd_list[sc->txcur]; 1612 sbd->type = IPW_SBD_TYPE_HEADER; 1613 sbd->priv = shdr; 1614 sbd->bd->physaddr = htole32(physaddr); 1615 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1616 sbd->bd->nfrag = 1 + nsegs; 1617 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1618 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1619 1620 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1621 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1622 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1623 ":")); 1624 1625 sc->txfree--; 1626 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1627 1628 sbuf->m = m0; 1629 sbuf->ni = ni; 1630 1631 for (i = 0; i < nsegs; i++) { 1632 sbd = &sc->stbd_list[sc->txcur]; 1633 1634 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1635 sbd->bd->len = htole32(segs[i].ds_len); 1636 sbd->bd->nfrag = 0; 1637 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1638 if (i == nsegs - 1) { 1639 sbd->type = IPW_SBD_TYPE_DATA; 1640 sbd->priv = sbuf; 1641 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1642 } else { 1643 sbd->type = IPW_SBD_TYPE_NOASSOC; 1644 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1645 } 1646 1647 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1648 1649 sc->txfree--; 1650 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1651 } 1652 1653 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1654 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1655 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1656 1657 /* kick firmware */ 1658 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1659 1660 return 0; 1661 } 1662 1663 static void 1664 ipw_start(struct ifnet *ifp) 1665 { 1666 struct ipw_softc *sc = ifp->if_softc; 1667 IPW_LOCK_DECL; 1668 1669 IPW_LOCK(sc); 1670 ipw_start_locked(ifp); 1671 IPW_UNLOCK(sc); 1672 } 1673 1674 static void 1675 ipw_start_locked(struct ifnet *ifp) 1676 { 1677 struct ipw_softc *sc = ifp->if_softc; 1678 struct ieee80211com *ic = &sc->sc_ic; 1679 struct mbuf *m0; 1680 struct ether_header *eh; 1681 struct ieee80211_node *ni; 1682 1683 IPW_LOCK_ASSERT(sc); 1684 1685 if (ic->ic_state != IEEE80211_S_RUN) 1686 return; 1687 1688 for (;;) { 1689 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0); 1690 if (m0 == NULL) 1691 break; 1692 1693 if (sc->txfree < 1 + IPW_MAX_NSEG) { 1694 IFQ_DRV_PREPEND(&ifp->if_snd, m0); 1695 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1696 break; 1697 } 1698 1699 if (m0->m_len < sizeof (struct ether_header) && 1700 (m0 = m_pullup(m0, sizeof (struct ether_header))) == NULL) 1701 continue; 1702 1703 eh = mtod(m0, struct ether_header *); 1704 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1705 if (ni == NULL) { 1706 m_freem(m0); 1707 continue; 1708 } 1709 BPF_MTAP(ifp, m0); 1710 1711 m0 = ieee80211_encap(ic, m0, ni); 1712 if (m0 == NULL) { 1713 ieee80211_free_node(ni); 1714 continue; 1715 } 1716 1717 if (bpf_peers_present(ic->ic_rawbpf)) 1718 bpf_mtap(ic->ic_rawbpf, m0); 1719 1720 if (ipw_tx_start(ifp, m0, ni) != 0) { 1721 ieee80211_free_node(ni); 1722 ifp->if_oerrors++; 1723 break; 1724 } 1725 1726 /* start watchdog timer */ 1727 sc->sc_tx_timer = 5; 1728 } 1729 } 1730 1731 static void 1732 ipw_watchdog(void *arg) 1733 { 1734 struct ipw_softc *sc = arg; 1735 struct ieee80211com *ic = &sc->sc_ic; 1736 struct ifnet *ifp = sc->sc_ifp; 1737 1738 IPW_LOCK_ASSERT(sc); 1739 1740 if (sc->sc_tx_timer > 0) { 1741 if (--sc->sc_tx_timer == 0) { 1742 if_printf(ifp, "device timeout\n"); 1743 ifp->if_oerrors++; 1744 taskqueue_enqueue_fast(taskqueue_fast, 1745 &sc->sc_init_task); 1746 } 1747 } 1748 if (sc->sc_scan_timer > 0) { 1749 if (--sc->sc_scan_timer == 0) { 1750 DPRINTFN(3, ("Scan timeout\n")); 1751 /* End the scan */ 1752 if (sc->flags & IPW_FLAG_SCANNING) { 1753 ieee80211_scan_done(ic); 1754 sc->flags &= ~IPW_FLAG_SCANNING; 1755 } 1756 } 1757 } 1758 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1759 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1760 } 1761 1762 static int 1763 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1764 { 1765 struct ipw_softc *sc = ifp->if_softc; 1766 struct ieee80211com *ic = &sc->sc_ic; 1767 int error = 0; 1768 IPW_LOCK_DECL; 1769 1770 IPW_LOCK(sc); 1771 1772 switch (cmd) { 1773 case SIOCSIFFLAGS: 1774 if (ifp->if_flags & IFF_UP) { 1775 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1776 ipw_init_locked(sc, 0); 1777 } else { 1778 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1779 ipw_stop_locked(sc); 1780 } 1781 break; 1782 1783 default: 1784 error = ieee80211_ioctl(ic, cmd, data); 1785 } 1786 1787 if (error == ENETRESET) { 1788 if ((ifp->if_flags & IFF_UP) && 1789 (ifp->if_drv_flags & IFF_DRV_RUNNING) && 1790 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1791 ipw_init_locked(sc, 0); 1792 error = 0; 1793 } 1794 1795 IPW_UNLOCK(sc); 1796 1797 return error; 1798 } 1799 1800 static void 1801 ipw_stop_master(struct ipw_softc *sc) 1802 { 1803 uint32_t tmp; 1804 int ntries; 1805 1806 /* disable interrupts */ 1807 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1808 1809 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1810 for (ntries = 0; ntries < 50; ntries++) { 1811 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1812 break; 1813 DELAY(10); 1814 } 1815 if (ntries == 50) 1816 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1817 1818 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1819 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1820 1821 /* Clear all flags except the following */ 1822 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1823 } 1824 1825 static int 1826 ipw_reset(struct ipw_softc *sc) 1827 { 1828 uint32_t tmp; 1829 int ntries; 1830 1831 ipw_stop_master(sc); 1832 1833 /* move adapter to D0 state */ 1834 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1835 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1836 1837 /* wait for clock stabilization */ 1838 for (ntries = 0; ntries < 1000; ntries++) { 1839 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1840 break; 1841 DELAY(200); 1842 } 1843 if (ntries == 1000) 1844 return EIO; 1845 1846 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1847 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1848 1849 DELAY(10); 1850 1851 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1852 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1853 1854 return 0; 1855 } 1856 1857 static int 1858 ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1859 { 1860 int ms = hz < 1000 ? 1 : hz/10; 1861 int i, error; 1862 1863 for (i = 0; i < 100; i++) { 1864 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1865 return 0; 1866 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1867 if (error == 0 || error != EWOULDBLOCK) 1868 return 0; 1869 } 1870 DPRINTF(("%s: timeout waiting for %s\n", 1871 __func__, waitfor ? "disable" : "enable")); 1872 return ETIMEDOUT; 1873 } 1874 1875 static int 1876 ipw_enable(struct ipw_softc *sc) 1877 { 1878 int error; 1879 1880 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1881 DPRINTF(("Enable adapter\n")); 1882 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1883 if (error != 0) 1884 return error; 1885 error = ipw_waitfordisable(sc, 0); 1886 if (error != 0) 1887 return error; 1888 sc->flags |= IPW_FLAG_ENABLED; 1889 } 1890 return 0; 1891 } 1892 1893 static int 1894 ipw_disable(struct ipw_softc *sc) 1895 { 1896 int error; 1897 1898 if (sc->flags & IPW_FLAG_ENABLED) { 1899 DPRINTF(("Disable adapter\n")); 1900 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1901 if (error != 0) 1902 return error; 1903 error = ipw_waitfordisable(sc, 1); 1904 if (error != 0) 1905 return error; 1906 sc->flags &= ~IPW_FLAG_ENABLED; 1907 } 1908 return 0; 1909 } 1910 1911 /* 1912 * Upload the microcode to the device. 1913 */ 1914 static int 1915 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1916 { 1917 int ntries; 1918 1919 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1920 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1921 1922 MEM_WRITE_2(sc, 0x220000, 0x0703); 1923 MEM_WRITE_2(sc, 0x220000, 0x0707); 1924 1925 MEM_WRITE_1(sc, 0x210014, 0x72); 1926 MEM_WRITE_1(sc, 0x210014, 0x72); 1927 1928 MEM_WRITE_1(sc, 0x210000, 0x40); 1929 MEM_WRITE_1(sc, 0x210000, 0x00); 1930 MEM_WRITE_1(sc, 0x210000, 0x40); 1931 1932 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1933 1934 MEM_WRITE_1(sc, 0x210000, 0x00); 1935 MEM_WRITE_1(sc, 0x210000, 0x00); 1936 MEM_WRITE_1(sc, 0x210000, 0x80); 1937 1938 MEM_WRITE_2(sc, 0x220000, 0x0703); 1939 MEM_WRITE_2(sc, 0x220000, 0x0707); 1940 1941 MEM_WRITE_1(sc, 0x210014, 0x72); 1942 MEM_WRITE_1(sc, 0x210014, 0x72); 1943 1944 MEM_WRITE_1(sc, 0x210000, 0x00); 1945 MEM_WRITE_1(sc, 0x210000, 0x80); 1946 1947 for (ntries = 0; ntries < 10; ntries++) { 1948 if (MEM_READ_1(sc, 0x210000) & 1) 1949 break; 1950 DELAY(10); 1951 } 1952 if (ntries == 10) { 1953 device_printf(sc->sc_dev, 1954 "timeout waiting for ucode to initialize\n"); 1955 return EIO; 1956 } 1957 1958 MEM_WRITE_4(sc, 0x3000e0, 0); 1959 1960 return 0; 1961 } 1962 1963 /* set of macros to handle unaligned little endian data in firmware image */ 1964 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1965 #define GETLE16(p) ((p)[0] | (p)[1] << 8) 1966 static int 1967 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 1968 { 1969 const uint8_t *p, *end; 1970 uint32_t tmp, dst; 1971 uint16_t len; 1972 int error; 1973 1974 p = fw; 1975 end = fw + size; 1976 while (p < end) { 1977 dst = GETLE32(p); p += 4; 1978 len = GETLE16(p); p += 2; 1979 1980 ipw_write_mem_1(sc, dst, p, len); 1981 p += len; 1982 } 1983 1984 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 1985 IPW_IO_LED_OFF); 1986 1987 /* enable interrupts */ 1988 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1989 1990 /* kick the firmware */ 1991 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1992 1993 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1994 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 1995 1996 /* wait at most one second for firmware initialization to complete */ 1997 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 1998 device_printf(sc->sc_dev, "timeout waiting for firmware " 1999 "initialization to complete\n"); 2000 return error; 2001 } 2002 2003 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2004 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2005 IPW_IO_GPIO3_MASK); 2006 2007 return 0; 2008 } 2009 2010 static int 2011 ipw_setwepkeys(struct ipw_softc *sc) 2012 { 2013 struct ieee80211com *ic = &sc->sc_ic; 2014 struct ipw_wep_key wepkey; 2015 struct ieee80211_key *wk; 2016 int error, i; 2017 2018 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2019 wk = &ic->ic_crypto.cs_nw_keys[i]; 2020 2021 if (wk->wk_cipher == NULL || 2022 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2023 continue; 2024 2025 wepkey.idx = i; 2026 wepkey.len = wk->wk_keylen; 2027 memset(wepkey.key, 0, sizeof wepkey.key); 2028 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2029 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2030 wepkey.len)); 2031 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2032 sizeof wepkey); 2033 if (error != 0) 2034 return error; 2035 } 2036 return 0; 2037 } 2038 2039 static int 2040 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2041 { 2042 struct ipw_wpa_ie wpaie; 2043 2044 memset(&wpaie, 0, sizeof(wpaie)); 2045 wpaie.len = htole32(ielen); 2046 /* XXX verify length */ 2047 memcpy(&wpaie.ie, ie, ielen); 2048 DPRINTF(("Setting WPA IE\n")); 2049 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2050 } 2051 2052 static int 2053 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2054 { 2055 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2056 2057 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2058 DPRINTF(("Setting mandatory BSSID to null\n")); 2059 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2060 } else { 2061 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2062 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2063 bssid, IEEE80211_ADDR_LEN); 2064 } 2065 } 2066 2067 static int 2068 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2069 { 2070 if (ssidlen == 0) { 2071 /* 2072 * A bug in the firmware breaks the ``don't associate'' 2073 * bit in the scan options command. To compensate for 2074 * this install a bogus ssid when no ssid is specified 2075 * so the firmware won't try to associate. 2076 */ 2077 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2078 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2079 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2080 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2081 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2082 "\x3c\x3d", IEEE80211_NWID_LEN); 2083 } else { 2084 #ifdef IPW_DEBUG 2085 if (ipw_debug > 0) { 2086 printf("Setting ESSID to "); 2087 ieee80211_print_essid(ssid, ssidlen); 2088 printf("\n"); 2089 } 2090 #endif 2091 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2092 } 2093 } 2094 2095 static int 2096 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2097 { 2098 struct ipw_scan_options opts; 2099 2100 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2101 opts.channels = htole32(chanmask); 2102 opts.flags = htole32(flags); 2103 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2104 } 2105 2106 /* 2107 * Handler for sc_scan_task. This is a simple wrapper around ipw_scan(). 2108 */ 2109 static void 2110 ipw_scan_task(void *context, int pending) 2111 { 2112 struct ipw_softc *sc = context; 2113 IPW_LOCK_DECL; 2114 2115 IPW_LOCK(sc); 2116 ipw_scan(sc); 2117 IPW_UNLOCK(sc); 2118 } 2119 2120 static int 2121 ipw_scan(struct ipw_softc *sc) 2122 { 2123 uint32_t params; 2124 int error; 2125 2126 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2127 2128 if (sc->flags & IPW_FLAG_SCANNING) 2129 return (EBUSY); 2130 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2131 2132 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2133 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2134 if (error != 0) 2135 goto done; 2136 2137 /* 2138 * Setup null/bogus ssid so firmware doesn't use any previous 2139 * ssid to try and associate. This is because the ``don't 2140 * associate'' option bit is broken (sigh). 2141 */ 2142 error = ipw_setssid(sc, NULL, 0); 2143 if (error != 0) 2144 goto done; 2145 2146 /* 2147 * NB: the adapter may be disabled on association lost; 2148 * if so just re-enable it to kick off scanning. 2149 */ 2150 DPRINTF(("Starting scan\n")); 2151 sc->sc_scan_timer = 3; 2152 if (sc->flags & IPW_FLAG_ENABLED) { 2153 params = 0; /* XXX? */ 2154 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2155 ¶ms, sizeof(params)); 2156 } else 2157 error = ipw_enable(sc); 2158 done: 2159 if (error != 0) { 2160 DPRINTF(("Scan failed\n")); 2161 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2162 } 2163 return (error); 2164 } 2165 2166 static int 2167 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2168 { 2169 struct ieee80211com *ic = &sc->sc_ic; 2170 uint32_t data; 2171 int error; 2172 2173 data = htole32(ieee80211_chan2ieee(ic, chan)); 2174 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2175 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2176 if (error == 0) 2177 ipw_setcurchan(sc, chan); 2178 return error; 2179 } 2180 2181 static int 2182 ipw_config(struct ipw_softc *sc) 2183 { 2184 struct ieee80211com *ic = &sc->sc_ic; 2185 struct ifnet *ifp = ic->ic_ifp; 2186 struct ipw_security security; 2187 struct ipw_configuration config; 2188 uint32_t data; 2189 int error; 2190 2191 error = ipw_disable(sc); 2192 if (error != 0) 2193 return error; 2194 2195 switch (ic->ic_opmode) { 2196 case IEEE80211_M_STA: 2197 case IEEE80211_M_HOSTAP: 2198 case IEEE80211_M_WDS: /* XXX */ 2199 data = htole32(IPW_MODE_BSS); 2200 break; 2201 case IEEE80211_M_IBSS: 2202 case IEEE80211_M_AHDEMO: 2203 data = htole32(IPW_MODE_IBSS); 2204 break; 2205 case IEEE80211_M_MONITOR: 2206 data = htole32(IPW_MODE_MONITOR); 2207 break; 2208 } 2209 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2210 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2211 if (error != 0) 2212 return error; 2213 2214 if (ic->ic_opmode == IEEE80211_M_IBSS || 2215 ic->ic_opmode == IEEE80211_M_MONITOR) { 2216 error = ipw_setchannel(sc, ic->ic_curchan); 2217 if (error != 0) 2218 return error; 2219 } 2220 2221 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2222 return ipw_enable(sc); 2223 2224 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp)); 2225 DPRINTF(("Setting MAC address to %6D\n", ic->ic_myaddr, ":")); 2226 error = ipw_cmd(sc, IPW_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 2227 IEEE80211_ADDR_LEN); 2228 if (error != 0) 2229 return error; 2230 2231 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2232 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2233 if (ic->ic_opmode == IEEE80211_M_IBSS) 2234 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2235 if (ifp->if_flags & IFF_PROMISC) 2236 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2237 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2238 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2239 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2240 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2241 if (error != 0) 2242 return error; 2243 2244 data = htole32(0x3); /* 1, 2 */ 2245 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2246 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2247 if (error != 0) 2248 return error; 2249 2250 /* NB: use the same rate set */ 2251 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2252 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2253 if (error != 0) 2254 return error; 2255 2256 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2257 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2258 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2259 if (error != 0) 2260 return error; 2261 2262 data = htole32(IPW_POWER_MODE_CAM); 2263 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2264 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2265 if (error != 0) 2266 return error; 2267 2268 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2269 data = htole32(32); /* default value */ 2270 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2271 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2272 sizeof data); 2273 if (error != 0) 2274 return error; 2275 } 2276 2277 data = htole32(ic->ic_rtsthreshold); 2278 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2279 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2280 if (error != 0) 2281 return error; 2282 2283 data = htole32(ic->ic_fragthreshold); 2284 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2285 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2286 if (error != 0) 2287 return error; 2288 2289 error = ipw_setssid(sc, ic->ic_des_ssid[0].ssid, ic->ic_des_ssid[0].len); 2290 if (error != 0) 2291 return error; 2292 2293 error = ipw_setbssid(sc, NULL); 2294 if (error != 0) 2295 return error; 2296 2297 if (ic->ic_flags & IEEE80211_F_DESBSSID) { 2298 DPRINTF(("Setting desired BSSID to %6D\n", ic->ic_des_bssid, 2299 ":")); 2300 error = ipw_cmd(sc, IPW_CMD_SET_DESIRED_BSSID, 2301 ic->ic_des_bssid, IEEE80211_ADDR_LEN); 2302 if (error != 0) 2303 return error; 2304 } 2305 2306 memset(&security, 0, sizeof security); 2307 security.authmode = (ic->ic_bss->ni_authmode == IEEE80211_AUTH_SHARED) ? 2308 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2309 security.ciphers = htole32(IPW_CIPHER_NONE); 2310 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2311 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2312 sizeof security); 2313 if (error != 0) 2314 return error; 2315 2316 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 2317 error = ipw_setwepkeys(sc); 2318 if (error != 0) 2319 return error; 2320 2321 if (ic->ic_crypto.cs_def_txkey != IEEE80211_KEYIX_NONE) { 2322 data = htole32(ic->ic_crypto.cs_def_txkey); 2323 DPRINTF(("Setting wep tx key index to %u\n", 2324 le32toh(data))); 2325 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2326 sizeof data); 2327 if (error != 0) 2328 return error; 2329 } 2330 } 2331 2332 data = htole32((ic->ic_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2333 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2334 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2335 if (error != 0) 2336 return error; 2337 2338 if (ic->ic_opt_ie != NULL) { 2339 error = ipw_setwpaie(sc, ic->ic_opt_ie, ic->ic_opt_ie_len); 2340 if (error != 0) 2341 return error; 2342 } 2343 2344 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2345 data = htole32(ic->ic_bintval); 2346 DPRINTF(("Setting beacon interval to %u\n", le32toh(data))); 2347 error = ipw_cmd(sc, IPW_CMD_SET_BEACON_INTERVAL, &data, 2348 sizeof data); 2349 if (error != 0) 2350 return error; 2351 } 2352 2353 error = ipw_setscanopts(sc, 0x3fff, 0); 2354 if (error != 0) 2355 return error; 2356 2357 return (ipw_enable(sc)); 2358 } 2359 2360 /* 2361 * Handler for sc_assoc_task. This is a simple wrapper around 2362 * ipw_auth_and_assoc(). 2363 */ 2364 static void 2365 ipw_assoc_task(void *context, int pending) 2366 { 2367 struct ipw_softc *sc = context; 2368 IPW_LOCK_DECL; 2369 2370 IPW_LOCK(sc); 2371 ipw_auth_and_assoc(sc); 2372 IPW_UNLOCK(sc); 2373 } 2374 2375 static int 2376 ipw_auth_and_assoc(struct ipw_softc *sc) 2377 { 2378 struct ieee80211com *ic = &sc->sc_ic; 2379 struct ieee80211_node *ni = ic->ic_bss; 2380 struct ipw_security security; 2381 uint32_t data; 2382 int error; 2383 2384 error = ipw_disable(sc); 2385 if (error != 0) 2386 return (error); 2387 2388 memset(&security, 0, sizeof security); 2389 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2390 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2391 security.ciphers = htole32(IPW_CIPHER_NONE); 2392 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2393 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2394 sizeof security); 2395 if (error != 0) 2396 return (error); 2397 2398 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 2399 error = ipw_setwepkeys(sc); 2400 if (error != 0) 2401 return error; 2402 2403 if (ic->ic_crypto.cs_def_txkey != IEEE80211_KEYIX_NONE) { 2404 data = htole32(ic->ic_crypto.cs_def_txkey); 2405 DPRINTF(("Setting wep tx key index to %u\n", 2406 le32toh(data))); 2407 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2408 sizeof data); 2409 if (error != 0) 2410 return error; 2411 } 2412 } 2413 2414 data = htole32((ic->ic_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2415 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2416 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2417 if (error != 0) 2418 return error; 2419 2420 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2421 if (error != 0) 2422 return (error); 2423 2424 error = ipw_setbssid(sc, ni->ni_bssid); 2425 if (error != 0) 2426 return (error); 2427 2428 if (ic->ic_opt_ie != NULL) { 2429 error = ipw_setwpaie(sc, ic->ic_opt_ie, ic->ic_opt_ie_len); 2430 if (error != 0) 2431 return error; 2432 } 2433 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2434 error = ipw_setchannel(sc, ni->ni_chan); 2435 if (error != 0) 2436 return (error); 2437 } 2438 2439 /* lock scan to ap's channel and enable associate */ 2440 error = ipw_setscanopts(sc, 2441 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2442 2443 return ipw_enable(sc); /* finally, enable adapter */ 2444 } 2445 2446 /* 2447 * Handler for sc_disassoc_task. This is a simple wrapper around 2448 * ipw_disassociate(). 2449 */ 2450 static void 2451 ipw_disassoc_task(void *context, int pending) 2452 { 2453 struct ipw_softc *sc = context; 2454 IPW_LOCK_DECL; 2455 2456 IPW_LOCK(sc); 2457 ipw_disassociate(sc); 2458 IPW_UNLOCK(sc); 2459 } 2460 2461 static int 2462 ipw_disassociate(struct ipw_softc *sc) 2463 { 2464 struct ieee80211com *ic = &sc->sc_ic; 2465 struct ieee80211_node *ni = ic->ic_bss; 2466 2467 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2468 2469 /* 2470 * NB: don't try to do this if ipw_stop_master has 2471 * shutdown the firmware and disabled interrupts. 2472 */ 2473 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2474 return (0); 2475 2476 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2477 /* 2478 * NB: firmware currently ignores bssid parameter, but 2479 * supply it in case this changes (follow linux driver). 2480 */ 2481 return ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2482 ni->ni_bssid, IEEE80211_ADDR_LEN); 2483 } 2484 2485 /* 2486 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2487 * It is called on firmware panics or on watchdog timeouts. 2488 */ 2489 static void 2490 ipw_init_task(void *context, int pending) 2491 { 2492 ipw_init(context); 2493 } 2494 2495 static void 2496 ipw_init(void *priv) 2497 { 2498 struct ipw_softc *sc = priv; 2499 IPW_LOCK_DECL; 2500 2501 IPW_LOCK(sc); 2502 ipw_init_locked(sc, 0); 2503 IPW_UNLOCK(sc); 2504 } 2505 2506 static void 2507 ipw_init_locked(struct ipw_softc *sc, int force) 2508 { 2509 struct ieee80211com *ic = &sc->sc_ic; 2510 struct ifnet *ifp = ic->ic_ifp; 2511 const struct firmware *fp; 2512 const struct ipw_firmware_hdr *hdr; 2513 const char *imagename, *fw; 2514 IPW_LOCK_DECL; 2515 2516 IPW_LOCK_ASSERT(sc); 2517 2518 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2519 ieee80211_state_name[ic->ic_state], sc->flags)); 2520 2521 /* 2522 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2523 * when loading the firmware and we don't want to be called during this 2524 * operation. 2525 */ 2526 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2527 return; 2528 sc->flags |= IPW_FLAG_INIT_LOCKED; 2529 2530 ipw_stop_locked(sc); 2531 2532 if (ipw_reset(sc) != 0) { 2533 device_printf(sc->sc_dev, "could not reset adapter\n"); 2534 goto fail1; 2535 } 2536 2537 switch (ic->ic_opmode) { 2538 case IEEE80211_M_STA: 2539 imagename = "ipw_bss"; 2540 break; 2541 case IEEE80211_M_IBSS: 2542 imagename = "ipw_ibss"; 2543 break; 2544 case IEEE80211_M_MONITOR: 2545 imagename = "ipw_monitor"; 2546 break; 2547 default: 2548 imagename = NULL; /* should not get there */ 2549 } 2550 2551 /* 2552 * Load firmware image using the firmware(9) subsystem. We need to 2553 * release the driver's lock first. 2554 */ 2555 if (sc->sc_firmware == NULL || strcmp(sc->sc_firmware->name, 2556 imagename) != 0) { 2557 IPW_UNLOCK(sc); 2558 if (sc->sc_firmware != NULL) 2559 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 2560 sc->sc_firmware = firmware_get(imagename); 2561 IPW_LOCK(sc); 2562 } 2563 2564 if (sc->sc_firmware == NULL) { 2565 device_printf(sc->sc_dev, 2566 "could not load firmware image '%s'\n", imagename); 2567 goto fail1; 2568 } 2569 2570 fp = sc->sc_firmware; 2571 if (fp->datasize < sizeof *hdr) { 2572 device_printf(sc->sc_dev, 2573 "firmware image too short %zu\n", fp->datasize); 2574 goto fail2; 2575 } 2576 2577 hdr = (const struct ipw_firmware_hdr *)fp->data; 2578 2579 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 2580 le32toh(hdr->ucodesz)) { 2581 device_printf(sc->sc_dev, 2582 "firmware image too short %zu\n", fp->datasize); 2583 goto fail2; 2584 } 2585 2586 DPRINTF(("Loading firmware image '%s'\n", imagename)); 2587 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2588 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2589 device_printf(sc->sc_dev, "could not load microcode\n"); 2590 goto fail2; 2591 } 2592 2593 ipw_stop_master(sc); 2594 2595 /* 2596 * Setup tx, rx and status rings. 2597 */ 2598 sc->txold = IPW_NTBD - 1; 2599 sc->txcur = 0; 2600 sc->txfree = IPW_NTBD - 2; 2601 sc->rxcur = IPW_NRBD - 1; 2602 2603 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2604 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2605 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2606 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2607 2608 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2609 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2610 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2611 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2612 2613 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2614 2615 fw = (const char *)fp->data + sizeof *hdr; 2616 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2617 device_printf(sc->sc_dev, "could not load firmware\n"); 2618 goto fail2; 2619 } 2620 2621 sc->flags |= IPW_FLAG_FW_INITED; 2622 2623 /* retrieve information tables base addresses */ 2624 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2625 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2626 2627 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2628 2629 if (ipw_config(sc) != 0) { 2630 device_printf(sc->sc_dev, "device configuration failed\n"); 2631 goto fail1; 2632 } 2633 2634 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2635 /* 2636 * NB: When restarting the adapter clock the state 2637 * machine regardless of the roaming mode; otherwise 2638 * we need to notify user apps so they can manually 2639 * get us going again. 2640 */ 2641 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL || force) 2642 ieee80211_new_state(ic, IEEE80211_S_SCAN, 0); 2643 } else 2644 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2645 2646 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2647 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2648 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2649 2650 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2651 return; 2652 2653 fail2: firmware_put(fp, FIRMWARE_UNLOAD); 2654 sc->sc_firmware = NULL; 2655 fail1: ifp->if_flags &= ~IFF_UP; 2656 ipw_stop_locked(sc); 2657 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2658 } 2659 2660 static void 2661 ipw_stop(void *priv) 2662 { 2663 struct ipw_softc *sc = priv; 2664 IPW_LOCK_DECL; 2665 2666 IPW_LOCK(sc); 2667 ipw_stop_locked(sc); 2668 IPW_UNLOCK(sc); 2669 } 2670 2671 static void 2672 ipw_stop_locked(struct ipw_softc *sc) 2673 { 2674 struct ieee80211com *ic = &sc->sc_ic; 2675 struct ifnet *ifp = ic->ic_ifp; 2676 int i; 2677 2678 IPW_LOCK_ASSERT(sc); 2679 2680 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2681 2682 callout_stop(&sc->sc_wdtimer); 2683 ipw_stop_master(sc); 2684 2685 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2686 2687 /* 2688 * Release tx buffers. 2689 */ 2690 for (i = 0; i < IPW_NTBD; i++) 2691 ipw_release_sbd(sc, &sc->stbd_list[i]); 2692 2693 sc->sc_tx_timer = 0; 2694 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2695 } 2696 2697 static int 2698 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2699 { 2700 struct ipw_softc *sc = arg1; 2701 uint32_t i, size, buf[256]; 2702 2703 memset(buf, 0, sizeof buf); 2704 2705 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2706 return SYSCTL_OUT(req, buf, sizeof buf); 2707 2708 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2709 2710 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2711 for (i = 1; i < size; i++) 2712 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2713 2714 return SYSCTL_OUT(req, buf, size); 2715 } 2716 2717 static int 2718 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2719 { 2720 struct ipw_softc *sc = arg1; 2721 int val; 2722 2723 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2724 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2725 2726 return SYSCTL_OUT(req, &val, sizeof val); 2727 } 2728 2729 static uint32_t 2730 ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2731 { 2732 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2733 } 2734 2735 static void 2736 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2737 { 2738 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2739 } 2740 2741 #if 0 2742 static int 2743 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2744 { 2745 uint32_t addr, info; 2746 uint16_t count, size; 2747 uint32_t total; 2748 2749 /* addr[4] + count[2] + size[2] */ 2750 addr = MEM_READ_4(sc, sc->table2_base + off); 2751 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2752 2753 count = info >> 16; 2754 size = info & 0xffff; 2755 total = count * size; 2756 2757 if (total > *len) { 2758 *len = total; 2759 return EINVAL; 2760 } 2761 2762 *len = total; 2763 ipw_read_mem_1(sc, addr, buf, total); 2764 2765 return 0; 2766 } 2767 2768 static void 2769 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2770 bus_size_t count) 2771 { 2772 for (; count > 0; offset++, datap++, count--) { 2773 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2774 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2775 } 2776 } 2777 #endif 2778 2779 static void 2780 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2781 bus_size_t count) 2782 { 2783 for (; count > 0; offset++, datap++, count--) { 2784 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2785 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2786 } 2787 } 2788 2789 static void 2790 ipw_scan_start(struct ieee80211com *ic) 2791 { 2792 struct ifnet *ifp = ic->ic_ifp; 2793 struct ipw_softc *sc = ifp->if_softc; 2794 IPW_LOCK_DECL; 2795 2796 IPW_LOCK(sc); 2797 if (!(sc->flags & IPW_FLAG_SCANNING)) 2798 taskqueue_enqueue_fast(taskqueue_fast, &sc->sc_scan_task); 2799 IPW_UNLOCK(sc); 2800 } 2801 2802 static void 2803 ipw_set_channel(struct ieee80211com *ic) 2804 { 2805 struct ifnet *ifp = ic->ic_ifp; 2806 struct ipw_softc *sc = ifp->if_softc; 2807 IPW_LOCK_DECL; 2808 2809 IPW_LOCK(sc); 2810 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2811 ipw_disable(sc); 2812 ipw_setchannel(sc, ic->ic_curchan); 2813 ipw_enable(sc); 2814 } 2815 IPW_UNLOCK(sc); 2816 } 2817 2818 static void 2819 ipw_scan_curchan(struct ieee80211com *ic, unsigned long maxdwell) 2820 { 2821 /* NB: all channels are scanned at once */ 2822 } 2823 2824 static void 2825 ipw_scan_mindwell(struct ieee80211com *ic) 2826 { 2827 /* NB: don't try to abort scan; wait for firmware to finish */ 2828 } 2829 2830 static void 2831 ipw_scan_end(struct ieee80211com *ic) 2832 { 2833 struct ifnet *ifp = ic->ic_ifp; 2834 struct ipw_softc *sc = ifp->if_softc; 2835 IPW_LOCK_DECL; 2836 2837 IPW_LOCK(sc); 2838 sc->flags &= ~IPW_FLAG_SCANNING; 2839 IPW_UNLOCK(sc); 2840 } 2841