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 struct ieee80211vap *ipw_vap_create(struct ieee80211com *, 111 const char name[IFNAMSIZ], int unit, int opmode, int flags, 112 const uint8_t bssid[IEEE80211_ADDR_LEN], 113 const uint8_t mac[IEEE80211_ADDR_LEN]); 114 static void ipw_vap_delete(struct ieee80211vap *); 115 static int ipw_dma_alloc(struct ipw_softc *); 116 static void ipw_release(struct ipw_softc *); 117 static void ipw_media_status(struct ifnet *, struct ifmediareq *); 118 static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int); 119 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t); 120 static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *); 121 static void ipw_assocsuccess(void *, int); 122 static void ipw_assocfailed(void *, int); 123 static void ipw_scandone(void *, int); 124 static void ipw_bmiss(void *, int); 125 static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *); 126 static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *, 127 struct ipw_soft_bd *, struct ipw_soft_buf *); 128 static void ipw_rx_intr(struct ipw_softc *); 129 static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *); 130 static void ipw_tx_intr(struct ipw_softc *); 131 static void ipw_intr(void *); 132 static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int); 133 static const char * ipw_cmdname(int); 134 static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t); 135 static int ipw_tx_start(struct ifnet *, struct mbuf *, 136 struct ieee80211_node *); 137 static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *, 138 const struct ieee80211_bpf_params *); 139 static void ipw_start(struct ifnet *); 140 static void ipw_start_locked(struct ifnet *); 141 static void ipw_watchdog(void *); 142 static int ipw_ioctl(struct ifnet *, u_long, caddr_t); 143 static void ipw_stop_master(struct ipw_softc *); 144 static int ipw_enable(struct ipw_softc *); 145 static int ipw_disable(struct ipw_softc *); 146 static int ipw_reset(struct ipw_softc *); 147 static int ipw_load_ucode(struct ipw_softc *, const char *, int); 148 static int ipw_load_firmware(struct ipw_softc *, const char *, int); 149 static int ipw_config(struct ipw_softc *); 150 static void ipw_assoc_task(void *, int); 151 static void ipw_disassoc_task(void *, int); 152 static void ipw_init_task(void *, int); 153 static void ipw_init(void *); 154 static void ipw_init_locked(struct ipw_softc *); 155 static void ipw_stop(void *); 156 static void ipw_stop_locked(struct ipw_softc *); 157 static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS); 158 static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS); 159 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t); 160 static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t); 161 #if 0 162 static int ipw_read_table2(struct ipw_softc *, uint32_t, void *, 163 uint32_t *); 164 static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *, 165 bus_size_t); 166 #endif 167 static void ipw_write_mem_1(struct ipw_softc *, bus_size_t, 168 const uint8_t *, bus_size_t); 169 static void ipw_scan_task(void *, int); 170 static int ipw_scan(struct ipw_softc *); 171 static void ipw_scan_start(struct ieee80211com *); 172 static void ipw_scan_end(struct ieee80211com *); 173 static void ipw_set_channel(struct ieee80211com *); 174 static void ipw_scan_curchan(struct ieee80211_scan_state *, 175 unsigned long maxdwell); 176 static void ipw_scan_mindwell(struct ieee80211_scan_state *); 177 178 static int ipw_probe(device_t); 179 static int ipw_attach(device_t); 180 static int ipw_detach(device_t); 181 static int ipw_shutdown(device_t); 182 static int ipw_suspend(device_t); 183 static int ipw_resume(device_t); 184 185 static device_method_t ipw_methods[] = { 186 /* Device interface */ 187 DEVMETHOD(device_probe, ipw_probe), 188 DEVMETHOD(device_attach, ipw_attach), 189 DEVMETHOD(device_detach, ipw_detach), 190 DEVMETHOD(device_shutdown, ipw_shutdown), 191 DEVMETHOD(device_suspend, ipw_suspend), 192 DEVMETHOD(device_resume, ipw_resume), 193 194 { 0, 0 } 195 }; 196 197 static driver_t ipw_driver = { 198 "ipw", 199 ipw_methods, 200 sizeof (struct ipw_softc) 201 }; 202 203 static devclass_t ipw_devclass; 204 205 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0); 206 207 static int 208 ipw_probe(device_t dev) 209 { 210 const struct ipw_ident *ident; 211 212 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 213 if (pci_get_vendor(dev) == ident->vendor && 214 pci_get_device(dev) == ident->device) { 215 device_set_desc(dev, ident->name); 216 return 0; 217 } 218 } 219 return ENXIO; 220 } 221 222 /* Base Address Register */ 223 #define IPW_PCI_BAR0 0x10 224 225 static int 226 ipw_attach(device_t dev) 227 { 228 struct ipw_softc *sc = device_get_softc(dev); 229 struct ifnet *ifp; 230 struct ieee80211com *ic; 231 struct ieee80211_channel *c; 232 uint16_t val; 233 int error, i; 234 235 sc->sc_dev = dev; 236 237 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 238 MTX_DEF | MTX_RECURSE); 239 240 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 241 TASK_INIT(&sc->sc_scan_task, 0, ipw_scan_task, sc); 242 TASK_INIT(&sc->sc_bmiss_task, 0, ipw_bmiss, sc); 243 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 244 245 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 246 device_printf(dev, "chip is in D%d power mode " 247 "-- setting to D0\n", pci_get_powerstate(dev)); 248 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 249 } 250 251 pci_write_config(dev, 0x41, 0, 1); 252 253 /* enable bus-mastering */ 254 pci_enable_busmaster(dev); 255 256 sc->mem_rid = IPW_PCI_BAR0; 257 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 258 RF_ACTIVE); 259 if (sc->mem == NULL) { 260 device_printf(dev, "could not allocate memory resource\n"); 261 goto fail; 262 } 263 264 sc->sc_st = rman_get_bustag(sc->mem); 265 sc->sc_sh = rman_get_bushandle(sc->mem); 266 267 sc->irq_rid = 0; 268 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 269 RF_ACTIVE | RF_SHAREABLE); 270 if (sc->irq == NULL) { 271 device_printf(dev, "could not allocate interrupt resource\n"); 272 goto fail1; 273 } 274 275 if (ipw_reset(sc) != 0) { 276 device_printf(dev, "could not reset adapter\n"); 277 goto fail2; 278 } 279 280 if (ipw_dma_alloc(sc) != 0) { 281 device_printf(dev, "could not allocate DMA resources\n"); 282 goto fail2; 283 } 284 285 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 286 if (ifp == NULL) { 287 device_printf(dev, "can not if_alloc()\n"); 288 goto fail3; 289 } 290 ic = ifp->if_l2com; 291 292 ifp->if_softc = sc; 293 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 294 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 295 ifp->if_init = ipw_init; 296 ifp->if_ioctl = ipw_ioctl; 297 ifp->if_start = ipw_start; 298 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 299 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 300 IFQ_SET_READY(&ifp->if_snd); 301 302 ic->ic_ifp = ifp; 303 ic->ic_opmode = IEEE80211_M_STA; 304 ic->ic_phytype = IEEE80211_T_DS; 305 306 /* set device capabilities */ 307 ic->ic_caps = 308 IEEE80211_C_STA /* station mode supported */ 309 | IEEE80211_C_IBSS /* IBSS mode supported */ 310 | IEEE80211_C_MONITOR /* monitor mode supported */ 311 | IEEE80211_C_PMGT /* power save supported */ 312 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 313 | IEEE80211_C_WPA /* 802.11i supported */ 314 ; 315 316 /* read MAC address from EEPROM */ 317 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 318 ic->ic_myaddr[0] = val >> 8; 319 ic->ic_myaddr[1] = val & 0xff; 320 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 321 ic->ic_myaddr[2] = val >> 8; 322 ic->ic_myaddr[3] = val & 0xff; 323 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 324 ic->ic_myaddr[4] = val >> 8; 325 ic->ic_myaddr[5] = val & 0xff; 326 327 /* set supported .11b channels (read from EEPROM) */ 328 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 329 val = 0x7ff; /* default to channels 1-11 */ 330 val <<= 1; 331 for (i = 1; i < 16; i++) { 332 if (val & (1 << i)) { 333 c = &ic->ic_channels[ic->ic_nchans++]; 334 c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 335 c->ic_flags = IEEE80211_CHAN_B; 336 c->ic_ieee = i; 337 } 338 } 339 340 /* check support for radio transmitter switch in EEPROM */ 341 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 342 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 343 344 ieee80211_ifattach(ic); 345 ic->ic_scan_start = ipw_scan_start; 346 ic->ic_scan_end = ipw_scan_end; 347 ic->ic_set_channel = ipw_set_channel; 348 ic->ic_scan_curchan = ipw_scan_curchan; 349 ic->ic_scan_mindwell = ipw_scan_mindwell; 350 ic->ic_raw_xmit = ipw_raw_xmit; 351 352 ic->ic_vap_create = ipw_vap_create; 353 ic->ic_vap_delete = ipw_vap_delete; 354 355 bpfattach(ifp, DLT_IEEE802_11_RADIO, 356 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap)); 357 358 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 359 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 360 sc->sc_rxtap.wr_ihdr.it_present = htole32(IPW_RX_RADIOTAP_PRESENT); 361 362 sc->sc_txtap_len = sizeof sc->sc_txtap; 363 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 364 sc->sc_txtap.wt_ihdr.it_present = htole32(IPW_TX_RADIOTAP_PRESENT); 365 366 /* 367 * Add a few sysctl knobs. 368 */ 369 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 370 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 371 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 372 "radio transmitter switch state (0=off, 1=on)"); 373 374 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 375 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 376 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 377 "statistics"); 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 fail4; 387 } 388 389 if (bootverbose) 390 ieee80211_announce(ic); 391 392 return 0; 393 fail4: 394 if_free(ifp); 395 fail3: 396 ipw_release(sc); 397 fail2: 398 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 399 fail1: 400 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 401 fail: 402 mtx_destroy(&sc->sc_mtx); 403 return ENXIO; 404 } 405 406 static int 407 ipw_detach(device_t dev) 408 { 409 struct ipw_softc *sc = device_get_softc(dev); 410 struct ifnet *ifp = sc->sc_ifp; 411 struct ieee80211com *ic = ifp->if_l2com; 412 413 ipw_stop(sc); 414 415 bpfdetach(ifp); 416 ieee80211_ifdetach(ic); 417 418 callout_drain(&sc->sc_wdtimer); 419 taskqueue_drain(taskqueue_fast, &sc->sc_init_task); 420 taskqueue_drain(taskqueue_fast, &sc->sc_scan_task); 421 taskqueue_drain(taskqueue_fast, &sc->sc_bmiss_task); 422 423 ipw_release(sc); 424 425 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 426 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 427 428 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 429 430 if_free(ifp); 431 432 if (sc->sc_firmware != NULL) { 433 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 434 sc->sc_firmware = NULL; 435 } 436 437 mtx_destroy(&sc->sc_mtx); 438 439 return 0; 440 } 441 442 static struct ieee80211vap * 443 ipw_vap_create(struct ieee80211com *ic, 444 const char name[IFNAMSIZ], int unit, int opmode, int flags, 445 const uint8_t bssid[IEEE80211_ADDR_LEN], 446 const uint8_t mac[IEEE80211_ADDR_LEN]) 447 { 448 struct ifnet *ifp = ic->ic_ifp; 449 struct ipw_softc *sc = ifp->if_softc; 450 struct ipw_vap *ivp; 451 struct ieee80211vap *vap; 452 const struct firmware *fp; 453 const struct ipw_firmware_hdr *hdr; 454 const char *imagename; 455 456 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 457 return NULL; 458 459 switch (opmode) { 460 case IEEE80211_M_STA: 461 imagename = "ipw_bss"; 462 break; 463 case IEEE80211_M_IBSS: 464 imagename = "ipw_ibss"; 465 break; 466 case IEEE80211_M_MONITOR: 467 imagename = "ipw_monitor"; 468 break; 469 default: 470 return NULL; 471 } 472 473 /* 474 * Load firmware image using the firmware(9) subsystem. Doing 475 * this unlocked is ok since we're single-threaded by the 476 * 802.11 layer. 477 */ 478 if (sc->sc_firmware == NULL || 479 strcmp(sc->sc_firmware->name, imagename) != 0) { 480 if (sc->sc_firmware != NULL) 481 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 482 sc->sc_firmware = firmware_get(imagename); 483 } 484 if (sc->sc_firmware == NULL) { 485 device_printf(sc->sc_dev, 486 "could not load firmware image '%s'\n", imagename); 487 return NULL; 488 } 489 fp = sc->sc_firmware; 490 if (fp->datasize < sizeof *hdr) { 491 device_printf(sc->sc_dev, 492 "firmware image too short %zu\n", fp->datasize); 493 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 494 sc->sc_firmware = NULL; 495 return NULL; 496 } 497 hdr = (const struct ipw_firmware_hdr *)fp->data; 498 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 499 le32toh(hdr->ucodesz)) { 500 device_printf(sc->sc_dev, 501 "firmware image too short %zu\n", fp->datasize); 502 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 503 sc->sc_firmware = NULL; 504 return NULL; 505 } 506 507 ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap), 508 M_80211_VAP, M_NOWAIT | M_ZERO); 509 if (ivp == NULL) 510 return NULL; 511 vap = &ivp->vap; 512 513 TASK_INIT(&ivp->assoc_task, 0, ipw_assoc_task, vap); 514 TASK_INIT(&ivp->disassoc_task, 0, ipw_disassoc_task, vap); 515 TASK_INIT(&ivp->assoc_success_task, 0, ipw_assocsuccess, vap); 516 TASK_INIT(&ivp->assoc_failed_task, 0, ipw_assocfailed, vap); 517 TASK_INIT(&ivp->scandone_task, 0, ipw_scandone, vap); 518 519 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 520 /* override with driver methods */ 521 ivp->newstate = vap->iv_newstate; 522 vap->iv_newstate = ipw_newstate; 523 524 /* complete setup */ 525 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status); 526 ic->ic_opmode = opmode; 527 return vap; 528 } 529 530 static void 531 ipw_vap_delete(struct ieee80211vap *vap) 532 { 533 struct ipw_vap *ivp = IPW_VAP(vap); 534 535 ieee80211_vap_detach(vap); 536 free(ivp, M_80211_VAP); 537 } 538 539 static int 540 ipw_dma_alloc(struct ipw_softc *sc) 541 { 542 struct ipw_soft_bd *sbd; 543 struct ipw_soft_hdr *shdr; 544 struct ipw_soft_buf *sbuf; 545 bus_addr_t physaddr; 546 int error, i; 547 548 /* 549 * Allocate and map tx ring. 550 */ 551 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 552 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 553 NULL, &sc->tbd_dmat); 554 if (error != 0) { 555 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 556 goto fail; 557 } 558 559 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 560 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 561 if (error != 0) { 562 device_printf(sc->sc_dev, 563 "could not allocate tx ring DMA memory\n"); 564 goto fail; 565 } 566 567 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 568 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 569 if (error != 0) { 570 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 571 goto fail; 572 } 573 574 /* 575 * Allocate and map rx ring. 576 */ 577 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 578 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 579 NULL, &sc->rbd_dmat); 580 if (error != 0) { 581 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 582 goto fail; 583 } 584 585 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 586 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 587 if (error != 0) { 588 device_printf(sc->sc_dev, 589 "could not allocate rx ring DMA memory\n"); 590 goto fail; 591 } 592 593 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 594 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 595 if (error != 0) { 596 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 597 goto fail; 598 } 599 600 /* 601 * Allocate and map status ring. 602 */ 603 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 604 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 605 NULL, NULL, &sc->status_dmat); 606 if (error != 0) { 607 device_printf(sc->sc_dev, 608 "could not create status ring DMA tag\n"); 609 goto fail; 610 } 611 612 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 613 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 614 if (error != 0) { 615 device_printf(sc->sc_dev, 616 "could not allocate status ring DMA memory\n"); 617 goto fail; 618 } 619 620 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 621 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 622 0); 623 if (error != 0) { 624 device_printf(sc->sc_dev, 625 "could not map status ring DMA memory\n"); 626 goto fail; 627 } 628 629 /* 630 * Allocate command DMA map. 631 */ 632 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 633 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 634 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 635 if (error != 0) { 636 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 637 goto fail; 638 } 639 640 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 641 if (error != 0) { 642 device_printf(sc->sc_dev, 643 "could not create command DMA map\n"); 644 goto fail; 645 } 646 647 /* 648 * Allocate headers DMA maps. 649 */ 650 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 651 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 652 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 653 if (error != 0) { 654 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 655 goto fail; 656 } 657 658 SLIST_INIT(&sc->free_shdr); 659 for (i = 0; i < IPW_NDATA; i++) { 660 shdr = &sc->shdr_list[i]; 661 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 662 if (error != 0) { 663 device_printf(sc->sc_dev, 664 "could not create header DMA map\n"); 665 goto fail; 666 } 667 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 668 } 669 670 /* 671 * Allocate tx buffers DMA maps. 672 */ 673 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 674 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 675 NULL, NULL, &sc->txbuf_dmat); 676 if (error != 0) { 677 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 678 goto fail; 679 } 680 681 SLIST_INIT(&sc->free_sbuf); 682 for (i = 0; i < IPW_NDATA; i++) { 683 sbuf = &sc->tx_sbuf_list[i]; 684 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 685 if (error != 0) { 686 device_printf(sc->sc_dev, 687 "could not create tx DMA map\n"); 688 goto fail; 689 } 690 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 691 } 692 693 /* 694 * Initialize tx ring. 695 */ 696 for (i = 0; i < IPW_NTBD; i++) { 697 sbd = &sc->stbd_list[i]; 698 sbd->bd = &sc->tbd_list[i]; 699 sbd->type = IPW_SBD_TYPE_NOASSOC; 700 } 701 702 /* 703 * Pre-allocate rx buffers and DMA maps. 704 */ 705 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 706 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 707 NULL, &sc->rxbuf_dmat); 708 if (error != 0) { 709 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 710 goto fail; 711 } 712 713 for (i = 0; i < IPW_NRBD; i++) { 714 sbd = &sc->srbd_list[i]; 715 sbuf = &sc->rx_sbuf_list[i]; 716 sbd->bd = &sc->rbd_list[i]; 717 718 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 719 if (sbuf->m == NULL) { 720 device_printf(sc->sc_dev, 721 "could not allocate rx mbuf\n"); 722 error = ENOMEM; 723 goto fail; 724 } 725 726 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 727 if (error != 0) { 728 device_printf(sc->sc_dev, 729 "could not create rx DMA map\n"); 730 goto fail; 731 } 732 733 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 734 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 735 &physaddr, 0); 736 if (error != 0) { 737 device_printf(sc->sc_dev, 738 "could not map rx DMA memory\n"); 739 goto fail; 740 } 741 742 sbd->type = IPW_SBD_TYPE_DATA; 743 sbd->priv = sbuf; 744 sbd->bd->physaddr = htole32(physaddr); 745 sbd->bd->len = htole32(MCLBYTES); 746 } 747 748 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 749 750 return 0; 751 752 fail: ipw_release(sc); 753 return error; 754 } 755 756 static void 757 ipw_release(struct ipw_softc *sc) 758 { 759 struct ipw_soft_buf *sbuf; 760 int i; 761 762 if (sc->tbd_dmat != NULL) { 763 if (sc->stbd_list != NULL) { 764 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 765 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, 766 sc->tbd_map); 767 } 768 bus_dma_tag_destroy(sc->tbd_dmat); 769 } 770 771 if (sc->rbd_dmat != NULL) { 772 if (sc->rbd_list != NULL) { 773 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 774 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 775 sc->rbd_map); 776 } 777 bus_dma_tag_destroy(sc->rbd_dmat); 778 } 779 780 if (sc->status_dmat != NULL) { 781 if (sc->status_list != NULL) { 782 bus_dmamap_unload(sc->status_dmat, sc->status_map); 783 bus_dmamem_free(sc->status_dmat, sc->status_list, 784 sc->status_map); 785 } 786 bus_dma_tag_destroy(sc->status_dmat); 787 } 788 789 for (i = 0; i < IPW_NTBD; i++) 790 ipw_release_sbd(sc, &sc->stbd_list[i]); 791 792 if (sc->cmd_dmat != NULL) { 793 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 794 bus_dma_tag_destroy(sc->cmd_dmat); 795 } 796 797 if (sc->hdr_dmat != NULL) { 798 for (i = 0; i < IPW_NDATA; i++) 799 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 800 bus_dma_tag_destroy(sc->hdr_dmat); 801 } 802 803 if (sc->txbuf_dmat != NULL) { 804 for (i = 0; i < IPW_NDATA; i++) { 805 bus_dmamap_destroy(sc->txbuf_dmat, 806 sc->tx_sbuf_list[i].map); 807 } 808 bus_dma_tag_destroy(sc->txbuf_dmat); 809 } 810 811 if (sc->rxbuf_dmat != NULL) { 812 for (i = 0; i < IPW_NRBD; i++) { 813 sbuf = &sc->rx_sbuf_list[i]; 814 if (sbuf->m != NULL) { 815 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 816 BUS_DMASYNC_POSTREAD); 817 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 818 m_freem(sbuf->m); 819 } 820 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 821 } 822 bus_dma_tag_destroy(sc->rxbuf_dmat); 823 } 824 } 825 826 static int 827 ipw_shutdown(device_t dev) 828 { 829 struct ipw_softc *sc = device_get_softc(dev); 830 831 ipw_stop(sc); 832 833 return 0; 834 } 835 836 static int 837 ipw_suspend(device_t dev) 838 { 839 struct ipw_softc *sc = device_get_softc(dev); 840 841 ipw_stop(sc); 842 843 return 0; 844 } 845 846 static int 847 ipw_resume(device_t dev) 848 { 849 struct ipw_softc *sc = device_get_softc(dev); 850 struct ifnet *ifp = sc->sc_ifp; 851 852 pci_write_config(dev, 0x41, 0, 1); 853 854 if (ifp->if_flags & IFF_UP) 855 ipw_init(sc); 856 857 return 0; 858 } 859 860 static int 861 ipw_cvtrate(int ipwrate) 862 { 863 switch (ipwrate) { 864 case IPW_RATE_DS1: return 2; 865 case IPW_RATE_DS2: return 4; 866 case IPW_RATE_DS5: return 11; 867 case IPW_RATE_DS11: return 22; 868 } 869 return 0; 870 } 871 872 /* 873 * The firmware automatically adapts the transmit speed. We report its current 874 * value here. 875 */ 876 static void 877 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 878 { 879 struct ieee80211vap *vap = ifp->if_softc; 880 struct ieee80211com *ic = vap->iv_ic; 881 struct ipw_softc *sc = ic->ic_ifp->if_softc; 882 883 /* read current transmission rate from adapter */ 884 vap->iv_bss->ni_txrate = ipw_cvtrate( 885 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 886 ieee80211_media_status(ifp, imr); 887 } 888 889 static int 890 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 891 { 892 struct ipw_vap *ivp = IPW_VAP(vap); 893 struct ieee80211com *ic = vap->iv_ic; 894 struct ifnet *ifp = ic->ic_ifp; 895 struct ipw_softc *sc = ifp->if_softc; 896 897 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 898 ieee80211_state_name[vap->iv_state], 899 ieee80211_state_name[nstate], sc->flags)); 900 901 switch (nstate) { 902 case IEEE80211_S_RUN: 903 if (ic->ic_opmode == IEEE80211_M_IBSS) { 904 /* 905 * XXX when joining an ibss network we are called 906 * with a SCAN -> RUN transition on scan complete. 907 * Use that to call ipw_auth_and_assoc. On completing 908 * the join we are then called again with an 909 * AUTH -> RUN transition and we want to do nothing. 910 * This is all totally bogus and needs to be redone. 911 */ 912 if (vap->iv_state == IEEE80211_S_SCAN) { 913 taskqueue_enqueue(taskqueue_swi, 914 &IPW_VAP(vap)->assoc_task); 915 return EINPROGRESS; 916 } 917 } 918 break; 919 920 case IEEE80211_S_INIT: 921 if (sc->flags & IPW_FLAG_ASSOCIATED) 922 taskqueue_enqueue(taskqueue_swi, 923 &IPW_VAP(vap)->disassoc_task); 924 break; 925 926 case IEEE80211_S_AUTH: 927 taskqueue_enqueue(taskqueue_swi, &IPW_VAP(vap)->assoc_task); 928 return EINPROGRESS; 929 930 case IEEE80211_S_ASSOC: 931 /* 932 * If we are not transitioning from AUTH the resend the 933 * association request. 934 */ 935 if (vap->iv_state != IEEE80211_S_AUTH) { 936 taskqueue_enqueue(taskqueue_swi, 937 &IPW_VAP(vap)->assoc_task); 938 return EINPROGRESS; 939 } 940 break; 941 942 default: 943 break; 944 } 945 return ivp->newstate(vap, nstate, arg); 946 } 947 948 /* 949 * Read 16 bits at address 'addr' from the serial EEPROM. 950 */ 951 static uint16_t 952 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 953 { 954 uint32_t tmp; 955 uint16_t val; 956 int n; 957 958 /* clock C once before the first command */ 959 IPW_EEPROM_CTL(sc, 0); 960 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 961 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 962 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 963 964 /* write start bit (1) */ 965 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 966 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 967 968 /* write READ opcode (10) */ 969 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 970 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 971 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 972 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 973 974 /* write address A7-A0 */ 975 for (n = 7; n >= 0; n--) { 976 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 977 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 978 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 979 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 980 } 981 982 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 983 984 /* read data Q15-Q0 */ 985 val = 0; 986 for (n = 15; n >= 0; n--) { 987 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 988 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 989 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 990 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 991 } 992 993 IPW_EEPROM_CTL(sc, 0); 994 995 /* clear Chip Select and clock C */ 996 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 997 IPW_EEPROM_CTL(sc, 0); 998 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 999 1000 return le16toh(val); 1001 } 1002 1003 static void 1004 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1005 { 1006 struct ipw_cmd *cmd; 1007 1008 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1009 1010 cmd = mtod(sbuf->m, struct ipw_cmd *); 1011 1012 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 1013 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 1014 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 1015 le32toh(cmd->status))); 1016 1017 sc->flags &= ~IPW_FLAG_BUSY; 1018 wakeup(sc); 1019 } 1020 1021 static void 1022 ipw_assocsuccess(void *arg, int npending) 1023 { 1024 struct ieee80211vap *vap = arg; 1025 1026 ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 1027 } 1028 1029 static void 1030 ipw_assocfailed(void *arg, int npending) 1031 { 1032 struct ieee80211vap *vap = arg; 1033 1034 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1035 } 1036 1037 static void 1038 ipw_scandone(void *arg, int npending) 1039 { 1040 struct ieee80211vap *vap = arg; 1041 1042 ieee80211_scan_done(vap); 1043 } 1044 1045 static void 1046 ipw_bmiss(void *arg, int npending) 1047 { 1048 struct ieee80211com *ic = arg; 1049 1050 ieee80211_beacon_miss(ic); 1051 } 1052 1053 static void 1054 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1055 { 1056 #define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1057 struct ifnet *ifp = sc->sc_ifp; 1058 struct ieee80211com *ic = ifp->if_l2com; 1059 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1060 uint32_t state; 1061 1062 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1063 1064 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1065 1066 switch (state) { 1067 case IPW_STATE_ASSOCIATED: 1068 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1069 IEEESTATE(vap), sc->flags)); 1070 /* XXX suppress state change in case the fw auto-associates */ 1071 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1072 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1073 IEEESTATE(vap), sc->flags)); 1074 break; 1075 } 1076 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1077 sc->flags |= IPW_FLAG_ASSOCIATED; 1078 taskqueue_enqueue(taskqueue_swi, 1079 &IPW_VAP(vap)->assoc_success_task); 1080 break; 1081 1082 case IPW_STATE_SCANNING: 1083 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1084 IEEESTATE(vap), sc->flags)); 1085 /* 1086 * NB: Check driver state for association on assoc 1087 * loss as the firmware will immediately start to 1088 * scan and we would treat it as a beacon miss if 1089 * we checked the 802.11 layer state. 1090 */ 1091 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1092 /* XXX probably need to issue disassoc to fw */ 1093 taskqueue_enqueue(taskqueue_swi, &sc->sc_bmiss_task); 1094 } 1095 break; 1096 1097 case IPW_STATE_SCAN_COMPLETE: 1098 /* 1099 * XXX For some reason scan requests generate scan 1100 * started + scan done events before any traffic is 1101 * received (e.g. probe response frames). We work 1102 * around this by marking the HACK flag and skipping 1103 * the first scan complete event. 1104 */ 1105 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1106 IEEESTATE(vap), sc->flags)); 1107 if (sc->flags & IPW_FLAG_HACK) { 1108 sc->flags &= ~IPW_FLAG_HACK; 1109 break; 1110 } 1111 if (sc->flags & IPW_FLAG_SCANNING) { 1112 taskqueue_enqueue(taskqueue_swi, 1113 &IPW_VAP(vap)->scandone_task); 1114 sc->flags &= ~IPW_FLAG_SCANNING; 1115 sc->sc_scan_timer = 0; 1116 } 1117 break; 1118 1119 case IPW_STATE_ASSOCIATION_LOST: 1120 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1121 IEEESTATE(vap), sc->flags)); 1122 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1123 if (vap->iv_state == IEEE80211_S_RUN) 1124 taskqueue_enqueue(taskqueue_swi, 1125 &IPW_VAP(vap)->assoc_failed_task); 1126 break; 1127 1128 case IPW_STATE_DISABLED: 1129 /* XXX? is this right? */ 1130 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1131 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1132 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1133 IEEESTATE(vap), sc->flags)); 1134 break; 1135 1136 case IPW_STATE_RADIO_DISABLED: 1137 device_printf(sc->sc_dev, "radio turned off\n"); 1138 ieee80211_notify_radio(ic, 0); 1139 ipw_stop_locked(sc); 1140 /* XXX start polling thread to detect radio on */ 1141 break; 1142 1143 default: 1144 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1145 __func__, state, IEEESTATE(vap), sc->flags)); 1146 break; 1147 } 1148 #undef IEEESTATE 1149 } 1150 1151 /* 1152 * Set driver state for current channel. 1153 */ 1154 static void 1155 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1156 { 1157 struct ifnet *ifp = sc->sc_ifp; 1158 struct ieee80211com *ic = ifp->if_l2com; 1159 1160 ic->ic_curchan = chan; 1161 sc->sc_rxtap.wr_chan_freq = sc->sc_txtap.wt_chan_freq = 1162 htole16(ic->ic_curchan->ic_freq); 1163 sc->sc_rxtap.wr_chan_flags = sc->sc_txtap.wt_chan_flags = 1164 htole16(ic->ic_curchan->ic_flags); 1165 } 1166 1167 /* 1168 * XXX: Hack to set the current channel to the value advertised in beacons or 1169 * probe responses. Only used during AP detection. 1170 */ 1171 static void 1172 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1173 { 1174 struct ifnet *ifp = sc->sc_ifp; 1175 struct ieee80211com *ic = ifp->if_l2com; 1176 struct ieee80211_channel *c; 1177 struct ieee80211_frame *wh; 1178 uint8_t subtype; 1179 uint8_t *frm, *efrm; 1180 1181 wh = mtod(m, struct ieee80211_frame *); 1182 1183 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1184 return; 1185 1186 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1187 1188 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1189 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1190 return; 1191 1192 /* XXX use ieee80211_parse_beacon */ 1193 frm = (uint8_t *)(wh + 1); 1194 efrm = mtod(m, uint8_t *) + m->m_len; 1195 1196 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1197 while (frm < efrm) { 1198 if (*frm == IEEE80211_ELEMID_DSPARMS) 1199 #if IEEE80211_CHAN_MAX < 255 1200 if (frm[2] <= IEEE80211_CHAN_MAX) 1201 #endif 1202 { 1203 DPRINTF(("Fixing channel to %d\n", frm[2])); 1204 c = ieee80211_find_channel(ic, 1205 ieee80211_ieee2mhz(frm[2], 0), 1206 IEEE80211_CHAN_B); 1207 if (c == NULL) 1208 c = &ic->ic_channels[0]; 1209 ipw_setcurchan(sc, c); 1210 } 1211 1212 frm += frm[1] + 2; 1213 } 1214 } 1215 1216 static void 1217 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1218 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1219 { 1220 struct ifnet *ifp = sc->sc_ifp; 1221 struct ieee80211com *ic = ifp->if_l2com; 1222 struct mbuf *mnew, *m; 1223 struct ieee80211_node *ni; 1224 bus_addr_t physaddr; 1225 int error; 1226 IPW_LOCK_DECL; 1227 1228 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1229 status->rssi)); 1230 1231 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1232 le32toh(status->len) > MCLBYTES) 1233 return; 1234 1235 /* 1236 * Try to allocate a new mbuf for this ring element and load it before 1237 * processing the current mbuf. If the ring element cannot be loaded, 1238 * drop the received packet and reuse the old mbuf. In the unlikely 1239 * case that the old mbuf can't be reloaded either, explicitly panic. 1240 */ 1241 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1242 if (mnew == NULL) { 1243 ifp->if_ierrors++; 1244 return; 1245 } 1246 1247 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1248 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1249 1250 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1251 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1252 if (error != 0) { 1253 m_freem(mnew); 1254 1255 /* try to reload the old mbuf */ 1256 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1257 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1258 &physaddr, 0); 1259 if (error != 0) { 1260 /* very unlikely that it will fail... */ 1261 panic("%s: could not load old rx mbuf", 1262 device_get_name(sc->sc_dev)); 1263 } 1264 ifp->if_ierrors++; 1265 return; 1266 } 1267 1268 /* 1269 * New mbuf successfully loaded, update Rx ring and continue 1270 * processing. 1271 */ 1272 m = sbuf->m; 1273 sbuf->m = mnew; 1274 sbd->bd->physaddr = htole32(physaddr); 1275 1276 /* finalize mbuf */ 1277 m->m_pkthdr.rcvif = ifp; 1278 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1279 1280 if (bpf_peers_present(ifp->if_bpf)) { 1281 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1282 1283 tap->wr_flags = 0; 1284 tap->wr_antsignal = status->rssi + IPW_RSSI_TO_DBM; 1285 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 1286 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 1287 1288 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m); 1289 } 1290 1291 if (sc->flags & IPW_FLAG_SCANNING) 1292 ipw_fix_channel(sc, m); 1293 1294 IPW_UNLOCK(sc); 1295 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1296 if (ni != NULL) { 1297 (void) ieee80211_input(ni, m, status->rssi, -95, 0); 1298 ieee80211_free_node(ni); 1299 } else 1300 (void) ieee80211_input_all(ic, m, status->rssi, -95, 0); 1301 IPW_LOCK(sc); 1302 1303 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1304 } 1305 1306 static void 1307 ipw_rx_intr(struct ipw_softc *sc) 1308 { 1309 struct ipw_status *status; 1310 struct ipw_soft_bd *sbd; 1311 struct ipw_soft_buf *sbuf; 1312 uint32_t r, i; 1313 1314 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1315 return; 1316 1317 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1318 1319 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1320 1321 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1322 status = &sc->status_list[i]; 1323 sbd = &sc->srbd_list[i]; 1324 sbuf = sbd->priv; 1325 1326 switch (le16toh(status->code) & 0xf) { 1327 case IPW_STATUS_CODE_COMMAND: 1328 ipw_rx_cmd_intr(sc, sbuf); 1329 break; 1330 1331 case IPW_STATUS_CODE_NEWSTATE: 1332 ipw_rx_newstate_intr(sc, sbuf); 1333 break; 1334 1335 case IPW_STATUS_CODE_DATA_802_3: 1336 case IPW_STATUS_CODE_DATA_802_11: 1337 ipw_rx_data_intr(sc, status, sbd, sbuf); 1338 break; 1339 1340 case IPW_STATUS_CODE_NOTIFICATION: 1341 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1342 le32toh(status->len), status->flags)); 1343 /* XXX maybe drive state machine AUTH->ASSOC? */ 1344 break; 1345 1346 default: 1347 device_printf(sc->sc_dev, "unexpected status code %u\n", 1348 le16toh(status->code)); 1349 } 1350 1351 /* firmware was killed, stop processing received frames */ 1352 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1353 return; 1354 1355 sbd->bd->flags = 0; 1356 } 1357 1358 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1359 1360 /* kick the firmware */ 1361 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1362 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1363 } 1364 1365 static void 1366 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1367 { 1368 struct ipw_soft_hdr *shdr; 1369 struct ipw_soft_buf *sbuf; 1370 1371 switch (sbd->type) { 1372 case IPW_SBD_TYPE_COMMAND: 1373 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1374 BUS_DMASYNC_POSTWRITE); 1375 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1376 break; 1377 1378 case IPW_SBD_TYPE_HEADER: 1379 shdr = sbd->priv; 1380 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1381 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1382 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1383 break; 1384 1385 case IPW_SBD_TYPE_DATA: 1386 sbuf = sbd->priv; 1387 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1388 BUS_DMASYNC_POSTWRITE); 1389 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1390 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1391 1392 if (sbuf->m->m_flags & M_TXCB) 1393 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1394 m_freem(sbuf->m); 1395 ieee80211_free_node(sbuf->ni); 1396 1397 sc->sc_tx_timer = 0; 1398 break; 1399 } 1400 1401 sbd->type = IPW_SBD_TYPE_NOASSOC; 1402 } 1403 1404 static void 1405 ipw_tx_intr(struct ipw_softc *sc) 1406 { 1407 struct ifnet *ifp = sc->sc_ifp; 1408 struct ipw_soft_bd *sbd; 1409 uint32_t r, i; 1410 1411 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1412 return; 1413 1414 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1415 1416 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1417 sbd = &sc->stbd_list[i]; 1418 1419 if (sbd->type == IPW_SBD_TYPE_DATA) 1420 ifp->if_opackets++; 1421 1422 ipw_release_sbd(sc, sbd); 1423 sc->txfree++; 1424 } 1425 1426 /* remember what the firmware has processed */ 1427 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1428 1429 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1430 ipw_start_locked(ifp); 1431 } 1432 1433 static void 1434 ipw_intr(void *arg) 1435 { 1436 struct ipw_softc *sc = arg; 1437 uint32_t r; 1438 IPW_LOCK_DECL; 1439 1440 IPW_LOCK(sc); 1441 1442 if ((r = CSR_READ_4(sc, IPW_CSR_INTR)) == 0 || r == 0xffffffff) { 1443 IPW_UNLOCK(sc); 1444 return; 1445 } 1446 1447 /* disable interrupts */ 1448 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1449 1450 /* acknowledge all interrupts */ 1451 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1452 1453 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1454 device_printf(sc->sc_dev, "firmware error\n"); 1455 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1456 r = 0; /* don't process more interrupts */ 1457 } 1458 1459 if (r & IPW_INTR_FW_INIT_DONE) 1460 wakeup(sc); 1461 1462 if (r & IPW_INTR_RX_TRANSFER) 1463 ipw_rx_intr(sc); 1464 1465 if (r & IPW_INTR_TX_TRANSFER) 1466 ipw_tx_intr(sc); 1467 1468 /* re-enable interrupts */ 1469 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1470 1471 IPW_UNLOCK(sc); 1472 } 1473 1474 static void 1475 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1476 { 1477 if (error != 0) 1478 return; 1479 1480 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1481 1482 *(bus_addr_t *)arg = segs[0].ds_addr; 1483 } 1484 1485 static const char * 1486 ipw_cmdname(int cmd) 1487 { 1488 #define N(a) (sizeof(a) / sizeof(a[0])) 1489 static const struct { 1490 int cmd; 1491 const char *name; 1492 } cmds[] = { 1493 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1494 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1495 { IPW_CMD_DISABLE, "DISABLE" }, 1496 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1497 { IPW_CMD_ENABLE, "ENABLE" }, 1498 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1499 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1500 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1501 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1502 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1503 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1504 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1505 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1506 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1507 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1508 { IPW_CMD_SET_MODE, "SET_MODE" }, 1509 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1510 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1511 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1512 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1513 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1514 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1515 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1516 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1517 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1518 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1519 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1520 1521 }; 1522 static char buf[12]; 1523 int i; 1524 1525 for (i = 0; i < N(cmds); i++) 1526 if (cmds[i].cmd == cmd) 1527 return cmds[i].name; 1528 snprintf(buf, sizeof(buf), "%u", cmd); 1529 return buf; 1530 #undef N 1531 } 1532 1533 /* 1534 * Send a command to the firmware and wait for the acknowledgement. 1535 */ 1536 static int 1537 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1538 { 1539 struct ipw_soft_bd *sbd; 1540 bus_addr_t physaddr; 1541 int error; 1542 1543 IPW_LOCK_ASSERT(sc); 1544 1545 if (sc->flags & IPW_FLAG_BUSY) { 1546 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1547 __func__, ipw_cmdname(type)); 1548 return EAGAIN; 1549 } 1550 sc->flags |= IPW_FLAG_BUSY; 1551 1552 sbd = &sc->stbd_list[sc->txcur]; 1553 1554 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1555 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1556 if (error != 0) { 1557 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1558 sc->flags &= ~IPW_FLAG_BUSY; 1559 return error; 1560 } 1561 1562 sc->cmd.type = htole32(type); 1563 sc->cmd.subtype = 0; 1564 sc->cmd.len = htole32(len); 1565 sc->cmd.seq = 0; 1566 memcpy(sc->cmd.data, data, len); 1567 1568 sbd->type = IPW_SBD_TYPE_COMMAND; 1569 sbd->bd->physaddr = htole32(physaddr); 1570 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1571 sbd->bd->nfrag = 1; 1572 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1573 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1574 1575 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1576 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1577 1578 #ifdef IPW_DEBUG 1579 if (ipw_debug >= 4) { 1580 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1581 0, 0, len); 1582 /* Print the data buffer in the higher debug level */ 1583 if (ipw_debug >= 9 && len > 0) { 1584 printf(" data: 0x"); 1585 for (int i = 1; i <= len; i++) 1586 printf("%1D", (u_char *)data + len - i, ""); 1587 } 1588 printf("\n"); 1589 } 1590 #endif 1591 1592 /* kick firmware */ 1593 sc->txfree--; 1594 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1595 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1596 1597 /* wait at most one second for command to complete */ 1598 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1599 if (error != 0) { 1600 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1601 __func__, ipw_cmdname(type), error); 1602 sc->flags &= ~IPW_FLAG_BUSY; 1603 return (error); 1604 } 1605 return (0); 1606 } 1607 1608 static int 1609 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1610 { 1611 struct ipw_softc *sc = ifp->if_softc; 1612 struct ieee80211com *ic = ifp->if_l2com; 1613 struct ieee80211_frame *wh; 1614 struct ipw_soft_bd *sbd; 1615 struct ipw_soft_hdr *shdr; 1616 struct ipw_soft_buf *sbuf; 1617 struct ieee80211_key *k; 1618 struct mbuf *mnew; 1619 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1620 bus_addr_t physaddr; 1621 int nsegs, error, i; 1622 1623 wh = mtod(m0, struct ieee80211_frame *); 1624 1625 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1626 k = ieee80211_crypto_encap(ni, m0); 1627 if (k == NULL) { 1628 m_freem(m0); 1629 return ENOBUFS; 1630 } 1631 /* packet header may have moved, reset our local pointer */ 1632 wh = mtod(m0, struct ieee80211_frame *); 1633 } 1634 1635 if (bpf_peers_present(ifp->if_bpf)) { 1636 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1637 1638 tap->wt_flags = 0; 1639 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1640 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1641 1642 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1643 } 1644 1645 shdr = SLIST_FIRST(&sc->free_shdr); 1646 sbuf = SLIST_FIRST(&sc->free_sbuf); 1647 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1648 1649 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1650 shdr->hdr.subtype = 0; 1651 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0; 1652 shdr->hdr.encrypt = 0; 1653 shdr->hdr.keyidx = 0; 1654 shdr->hdr.keysz = 0; 1655 shdr->hdr.fragmentsz = 0; 1656 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1657 if (ic->ic_opmode == IEEE80211_M_STA) 1658 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1659 else 1660 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1661 1662 /* trim IEEE802.11 header */ 1663 m_adj(m0, sizeof (struct ieee80211_frame)); 1664 1665 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1666 &nsegs, 0); 1667 if (error != 0 && error != EFBIG) { 1668 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1669 error); 1670 m_freem(m0); 1671 return error; 1672 } 1673 if (error != 0) { 1674 mnew = m_defrag(m0, M_DONTWAIT); 1675 if (mnew == NULL) { 1676 device_printf(sc->sc_dev, 1677 "could not defragment mbuf\n"); 1678 m_freem(m0); 1679 return ENOBUFS; 1680 } 1681 m0 = mnew; 1682 1683 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1684 segs, &nsegs, 0); 1685 if (error != 0) { 1686 device_printf(sc->sc_dev, 1687 "could not map mbuf (error %d)\n", error); 1688 m_freem(m0); 1689 return error; 1690 } 1691 } 1692 1693 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1694 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1695 if (error != 0) { 1696 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1697 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1698 m_freem(m0); 1699 return error; 1700 } 1701 1702 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1703 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1704 1705 sbd = &sc->stbd_list[sc->txcur]; 1706 sbd->type = IPW_SBD_TYPE_HEADER; 1707 sbd->priv = shdr; 1708 sbd->bd->physaddr = htole32(physaddr); 1709 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1710 sbd->bd->nfrag = 1 + nsegs; 1711 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1712 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1713 1714 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1715 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1716 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1717 ":")); 1718 1719 sc->txfree--; 1720 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1721 1722 sbuf->m = m0; 1723 sbuf->ni = ni; 1724 1725 for (i = 0; i < nsegs; i++) { 1726 sbd = &sc->stbd_list[sc->txcur]; 1727 1728 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1729 sbd->bd->len = htole32(segs[i].ds_len); 1730 sbd->bd->nfrag = 0; 1731 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1732 if (i == nsegs - 1) { 1733 sbd->type = IPW_SBD_TYPE_DATA; 1734 sbd->priv = sbuf; 1735 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1736 } else { 1737 sbd->type = IPW_SBD_TYPE_NOASSOC; 1738 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1739 } 1740 1741 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1742 1743 sc->txfree--; 1744 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1745 } 1746 1747 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1748 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1749 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1750 1751 /* kick firmware */ 1752 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1753 1754 return 0; 1755 } 1756 1757 static int 1758 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1759 const struct ieee80211_bpf_params *params) 1760 { 1761 /* no support; just discard */ 1762 m_freem(m); 1763 ieee80211_free_node(ni); 1764 return 0; 1765 } 1766 1767 static void 1768 ipw_start(struct ifnet *ifp) 1769 { 1770 struct ipw_softc *sc = ifp->if_softc; 1771 IPW_LOCK_DECL; 1772 1773 IPW_LOCK(sc); 1774 ipw_start_locked(ifp); 1775 IPW_UNLOCK(sc); 1776 } 1777 1778 static void 1779 ipw_start_locked(struct ifnet *ifp) 1780 { 1781 struct ipw_softc *sc = ifp->if_softc; 1782 struct ieee80211_node *ni; 1783 struct mbuf *m; 1784 1785 IPW_LOCK_ASSERT(sc); 1786 1787 for (;;) { 1788 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1789 if (m == NULL) 1790 break; 1791 if (sc->txfree < 1 + IPW_MAX_NSEG) { 1792 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1793 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1794 break; 1795 } 1796 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1797 m = ieee80211_encap(ni, m); 1798 if (m == NULL) { 1799 ieee80211_free_node(ni); 1800 continue; 1801 } 1802 if (ipw_tx_start(ifp, m, ni) != 0) { 1803 ieee80211_free_node(ni); 1804 ifp->if_oerrors++; 1805 break; 1806 } 1807 /* start watchdog timer */ 1808 sc->sc_tx_timer = 5; 1809 } 1810 } 1811 1812 static void 1813 ipw_watchdog(void *arg) 1814 { 1815 struct ipw_softc *sc = arg; 1816 struct ifnet *ifp = sc->sc_ifp; 1817 struct ieee80211com *ic = ifp->if_l2com; 1818 1819 IPW_LOCK_ASSERT(sc); 1820 1821 if (sc->sc_tx_timer > 0) { 1822 if (--sc->sc_tx_timer == 0) { 1823 if_printf(ifp, "device timeout\n"); 1824 ifp->if_oerrors++; 1825 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1826 } 1827 } 1828 if (sc->sc_scan_timer > 0) { 1829 if (--sc->sc_scan_timer == 0) { 1830 DPRINTFN(3, ("Scan timeout\n")); 1831 /* End the scan */ 1832 if (sc->flags & IPW_FLAG_SCANNING) { 1833 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1834 sc->flags &= ~IPW_FLAG_SCANNING; 1835 } 1836 } 1837 } 1838 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1839 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1840 } 1841 1842 static int 1843 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1844 { 1845 struct ipw_softc *sc = ifp->if_softc; 1846 struct ieee80211com *ic = ifp->if_l2com; 1847 struct ifreq *ifr = (struct ifreq *) data; 1848 int error = 0, startall = 0; 1849 IPW_LOCK_DECL; 1850 1851 switch (cmd) { 1852 case SIOCSIFFLAGS: 1853 IPW_LOCK(sc); 1854 if (ifp->if_flags & IFF_UP) { 1855 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1856 ipw_init_locked(sc); 1857 startall = 1; 1858 } 1859 } else { 1860 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1861 ipw_stop_locked(sc); 1862 } 1863 IPW_UNLOCK(sc); 1864 if (startall) 1865 ieee80211_start_all(ic); 1866 break; 1867 case SIOCGIFMEDIA: 1868 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1869 break; 1870 case SIOCGIFADDR: 1871 error = ether_ioctl(ifp, cmd, data); 1872 break; 1873 default: 1874 error = EINVAL; 1875 break; 1876 } 1877 return error; 1878 } 1879 1880 static void 1881 ipw_stop_master(struct ipw_softc *sc) 1882 { 1883 uint32_t tmp; 1884 int ntries; 1885 1886 /* disable interrupts */ 1887 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1888 1889 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1890 for (ntries = 0; ntries < 50; ntries++) { 1891 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1892 break; 1893 DELAY(10); 1894 } 1895 if (ntries == 50) 1896 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1897 1898 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1899 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1900 1901 /* Clear all flags except the following */ 1902 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1903 } 1904 1905 static int 1906 ipw_reset(struct ipw_softc *sc) 1907 { 1908 uint32_t tmp; 1909 int ntries; 1910 1911 ipw_stop_master(sc); 1912 1913 /* move adapter to D0 state */ 1914 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1915 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1916 1917 /* wait for clock stabilization */ 1918 for (ntries = 0; ntries < 1000; ntries++) { 1919 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1920 break; 1921 DELAY(200); 1922 } 1923 if (ntries == 1000) 1924 return EIO; 1925 1926 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1927 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1928 1929 DELAY(10); 1930 1931 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1932 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1933 1934 return 0; 1935 } 1936 1937 static int 1938 ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1939 { 1940 int ms = hz < 1000 ? 1 : hz/10; 1941 int i, error; 1942 1943 for (i = 0; i < 100; i++) { 1944 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1945 return 0; 1946 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1947 if (error == 0 || error != EWOULDBLOCK) 1948 return 0; 1949 } 1950 DPRINTF(("%s: timeout waiting for %s\n", 1951 __func__, waitfor ? "disable" : "enable")); 1952 return ETIMEDOUT; 1953 } 1954 1955 static int 1956 ipw_enable(struct ipw_softc *sc) 1957 { 1958 int error; 1959 1960 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1961 DPRINTF(("Enable adapter\n")); 1962 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1963 if (error != 0) 1964 return error; 1965 error = ipw_waitfordisable(sc, 0); 1966 if (error != 0) 1967 return error; 1968 sc->flags |= IPW_FLAG_ENABLED; 1969 } 1970 return 0; 1971 } 1972 1973 static int 1974 ipw_disable(struct ipw_softc *sc) 1975 { 1976 int error; 1977 1978 if (sc->flags & IPW_FLAG_ENABLED) { 1979 DPRINTF(("Disable adapter\n")); 1980 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1981 if (error != 0) 1982 return error; 1983 error = ipw_waitfordisable(sc, 1); 1984 if (error != 0) 1985 return error; 1986 sc->flags &= ~IPW_FLAG_ENABLED; 1987 } 1988 return 0; 1989 } 1990 1991 /* 1992 * Upload the microcode to the device. 1993 */ 1994 static int 1995 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1996 { 1997 int ntries; 1998 1999 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 2000 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 2001 2002 MEM_WRITE_2(sc, 0x220000, 0x0703); 2003 MEM_WRITE_2(sc, 0x220000, 0x0707); 2004 2005 MEM_WRITE_1(sc, 0x210014, 0x72); 2006 MEM_WRITE_1(sc, 0x210014, 0x72); 2007 2008 MEM_WRITE_1(sc, 0x210000, 0x40); 2009 MEM_WRITE_1(sc, 0x210000, 0x00); 2010 MEM_WRITE_1(sc, 0x210000, 0x40); 2011 2012 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 2013 2014 MEM_WRITE_1(sc, 0x210000, 0x00); 2015 MEM_WRITE_1(sc, 0x210000, 0x00); 2016 MEM_WRITE_1(sc, 0x210000, 0x80); 2017 2018 MEM_WRITE_2(sc, 0x220000, 0x0703); 2019 MEM_WRITE_2(sc, 0x220000, 0x0707); 2020 2021 MEM_WRITE_1(sc, 0x210014, 0x72); 2022 MEM_WRITE_1(sc, 0x210014, 0x72); 2023 2024 MEM_WRITE_1(sc, 0x210000, 0x00); 2025 MEM_WRITE_1(sc, 0x210000, 0x80); 2026 2027 for (ntries = 0; ntries < 10; ntries++) { 2028 if (MEM_READ_1(sc, 0x210000) & 1) 2029 break; 2030 DELAY(10); 2031 } 2032 if (ntries == 10) { 2033 device_printf(sc->sc_dev, 2034 "timeout waiting for ucode to initialize\n"); 2035 return EIO; 2036 } 2037 2038 MEM_WRITE_4(sc, 0x3000e0, 0); 2039 2040 return 0; 2041 } 2042 2043 /* set of macros to handle unaligned little endian data in firmware image */ 2044 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2045 #define GETLE16(p) ((p)[0] | (p)[1] << 8) 2046 static int 2047 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 2048 { 2049 const uint8_t *p, *end; 2050 uint32_t tmp, dst; 2051 uint16_t len; 2052 int error; 2053 2054 p = fw; 2055 end = fw + size; 2056 while (p < end) { 2057 dst = GETLE32(p); p += 4; 2058 len = GETLE16(p); p += 2; 2059 2060 ipw_write_mem_1(sc, dst, p, len); 2061 p += len; 2062 } 2063 2064 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 2065 IPW_IO_LED_OFF); 2066 2067 /* enable interrupts */ 2068 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 2069 2070 /* kick the firmware */ 2071 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 2072 2073 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 2074 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 2075 2076 /* wait at most one second for firmware initialization to complete */ 2077 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 2078 device_printf(sc->sc_dev, "timeout waiting for firmware " 2079 "initialization to complete\n"); 2080 return error; 2081 } 2082 2083 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2084 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2085 IPW_IO_GPIO3_MASK); 2086 2087 return 0; 2088 } 2089 2090 static int 2091 ipw_setwepkeys(struct ipw_softc *sc) 2092 { 2093 struct ifnet *ifp = sc->sc_ifp; 2094 struct ieee80211com *ic = ifp->if_l2com; 2095 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2096 struct ipw_wep_key wepkey; 2097 struct ieee80211_key *wk; 2098 int error, i; 2099 2100 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2101 wk = &vap->iv_nw_keys[i]; 2102 2103 if (wk->wk_cipher == NULL || 2104 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2105 continue; 2106 2107 wepkey.idx = i; 2108 wepkey.len = wk->wk_keylen; 2109 memset(wepkey.key, 0, sizeof wepkey.key); 2110 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2111 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2112 wepkey.len)); 2113 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2114 sizeof wepkey); 2115 if (error != 0) 2116 return error; 2117 } 2118 return 0; 2119 } 2120 2121 static int 2122 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2123 { 2124 struct ipw_wpa_ie wpaie; 2125 2126 memset(&wpaie, 0, sizeof(wpaie)); 2127 wpaie.len = htole32(ielen); 2128 /* XXX verify length */ 2129 memcpy(&wpaie.ie, ie, ielen); 2130 DPRINTF(("Setting WPA IE\n")); 2131 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2132 } 2133 2134 static int 2135 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2136 { 2137 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2138 2139 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2140 DPRINTF(("Setting mandatory BSSID to null\n")); 2141 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2142 } else { 2143 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2144 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2145 bssid, IEEE80211_ADDR_LEN); 2146 } 2147 } 2148 2149 static int 2150 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2151 { 2152 if (ssidlen == 0) { 2153 /* 2154 * A bug in the firmware breaks the ``don't associate'' 2155 * bit in the scan options command. To compensate for 2156 * this install a bogus ssid when no ssid is specified 2157 * so the firmware won't try to associate. 2158 */ 2159 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2160 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2161 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2162 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2163 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2164 "\x3c\x3d", IEEE80211_NWID_LEN); 2165 } else { 2166 #ifdef IPW_DEBUG 2167 if (ipw_debug > 0) { 2168 printf("Setting ESSID to "); 2169 ieee80211_print_essid(ssid, ssidlen); 2170 printf("\n"); 2171 } 2172 #endif 2173 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2174 } 2175 } 2176 2177 static int 2178 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2179 { 2180 struct ipw_scan_options opts; 2181 2182 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2183 opts.channels = htole32(chanmask); 2184 opts.flags = htole32(flags); 2185 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2186 } 2187 2188 /* 2189 * Handler for sc_scan_task. This is a simple wrapper around ipw_scan(). 2190 */ 2191 static void 2192 ipw_scan_task(void *context, int pending) 2193 { 2194 struct ipw_softc *sc = context; 2195 IPW_LOCK_DECL; 2196 2197 IPW_LOCK(sc); 2198 ipw_scan(sc); 2199 IPW_UNLOCK(sc); 2200 } 2201 2202 static int 2203 ipw_scan(struct ipw_softc *sc) 2204 { 2205 uint32_t params; 2206 int error; 2207 2208 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2209 2210 if (sc->flags & IPW_FLAG_SCANNING) 2211 return (EBUSY); 2212 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2213 2214 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2215 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2216 if (error != 0) 2217 goto done; 2218 2219 /* 2220 * Setup null/bogus ssid so firmware doesn't use any previous 2221 * ssid to try and associate. This is because the ``don't 2222 * associate'' option bit is broken (sigh). 2223 */ 2224 error = ipw_setssid(sc, NULL, 0); 2225 if (error != 0) 2226 goto done; 2227 2228 /* 2229 * NB: the adapter may be disabled on association lost; 2230 * if so just re-enable it to kick off scanning. 2231 */ 2232 DPRINTF(("Starting scan\n")); 2233 sc->sc_scan_timer = 3; 2234 if (sc->flags & IPW_FLAG_ENABLED) { 2235 params = 0; /* XXX? */ 2236 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2237 ¶ms, sizeof(params)); 2238 } else 2239 error = ipw_enable(sc); 2240 done: 2241 if (error != 0) { 2242 DPRINTF(("Scan failed\n")); 2243 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2244 } 2245 return (error); 2246 } 2247 2248 static int 2249 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2250 { 2251 struct ifnet *ifp = sc->sc_ifp; 2252 struct ieee80211com *ic = ifp->if_l2com; 2253 uint32_t data; 2254 int error; 2255 2256 data = htole32(ieee80211_chan2ieee(ic, chan)); 2257 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2258 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2259 if (error == 0) 2260 ipw_setcurchan(sc, chan); 2261 return error; 2262 } 2263 2264 static void 2265 ipw_assoc_task(void *context, int pending) 2266 { 2267 struct ieee80211vap *vap = context; 2268 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2269 struct ieee80211com *ic = ifp->if_l2com; 2270 struct ipw_softc *sc = ifp->if_softc; 2271 struct ieee80211_node *ni = vap->iv_bss; 2272 struct ipw_security security; 2273 uint32_t data; 2274 int error; 2275 IPW_LOCK_DECL; 2276 2277 IPW_LOCK(sc); 2278 error = ipw_disable(sc); 2279 if (error != 0) 2280 goto done; 2281 2282 memset(&security, 0, sizeof security); 2283 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2284 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2285 security.ciphers = htole32(IPW_CIPHER_NONE); 2286 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2287 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2288 sizeof security); 2289 if (error != 0) 2290 goto done; 2291 2292 data = htole32(vap->iv_rtsthreshold); 2293 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2294 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2295 if (error != 0) 2296 goto done; 2297 2298 data = htole32(vap->iv_fragthreshold); 2299 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2300 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2301 if (error != 0) 2302 goto done; 2303 2304 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2305 error = ipw_setwepkeys(sc); 2306 if (error != 0) 2307 goto done; 2308 2309 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2310 data = htole32(vap->iv_def_txkey); 2311 DPRINTF(("Setting wep tx key index to %u\n", 2312 le32toh(data))); 2313 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2314 sizeof data); 2315 if (error != 0) 2316 goto done; 2317 } 2318 } 2319 2320 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2321 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2322 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2323 if (error != 0) 2324 goto done; 2325 2326 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2327 if (error != 0) 2328 goto done; 2329 2330 error = ipw_setbssid(sc, ni->ni_bssid); 2331 if (error != 0) 2332 goto done; 2333 2334 if (vap->iv_appie_assocreq != NULL) { 2335 struct ieee80211_appie *ie = vap->iv_appie_assocreq; 2336 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2337 if (error != 0) 2338 goto done; 2339 } 2340 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2341 error = ipw_setchannel(sc, ni->ni_chan); 2342 if (error != 0) 2343 goto done; 2344 } 2345 2346 /* lock scan to ap's channel and enable associate */ 2347 error = ipw_setscanopts(sc, 2348 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2349 if (error != 0) 2350 goto done; 2351 2352 error = ipw_enable(sc); /* finally, enable adapter */ 2353 if (error == 0) 2354 sc->flags |= IPW_FLAG_ASSOCIATING; 2355 done: 2356 IPW_UNLOCK(sc); 2357 } 2358 2359 static void 2360 ipw_disassoc_task(void *context, int pending) 2361 { 2362 struct ieee80211vap *vap = context; 2363 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2364 struct ieee80211_node *ni = vap->iv_bss; 2365 struct ipw_softc *sc = ifp->if_softc; 2366 IPW_LOCK_DECL; 2367 2368 IPW_LOCK(sc); 2369 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2370 /* 2371 * NB: don't try to do this if ipw_stop_master has 2372 * shutdown the firmware and disabled interrupts. 2373 */ 2374 if (sc->flags & IPW_FLAG_FW_INITED) { 2375 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2376 /* 2377 * NB: firmware currently ignores bssid parameter, but 2378 * supply it in case this changes (follow linux driver). 2379 */ 2380 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2381 ni->ni_bssid, IEEE80211_ADDR_LEN); 2382 } 2383 IPW_UNLOCK(sc); 2384 } 2385 2386 /* 2387 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2388 * It is called on firmware panics or on watchdog timeouts. 2389 */ 2390 static void 2391 ipw_init_task(void *context, int pending) 2392 { 2393 ipw_init(context); 2394 } 2395 2396 static void 2397 ipw_init(void *priv) 2398 { 2399 struct ipw_softc *sc = priv; 2400 struct ifnet *ifp = sc->sc_ifp; 2401 struct ieee80211com *ic = ifp->if_l2com; 2402 IPW_LOCK_DECL; 2403 2404 IPW_LOCK(sc); 2405 ipw_init_locked(sc); 2406 IPW_UNLOCK(sc); 2407 2408 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2409 ieee80211_start_all(ic); /* start all vap's */ 2410 } 2411 2412 static void 2413 ipw_init_locked(struct ipw_softc *sc) 2414 { 2415 struct ifnet *ifp = sc->sc_ifp; 2416 struct ieee80211com *ic = ifp->if_l2com; 2417 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2418 const struct firmware *fp; 2419 const struct ipw_firmware_hdr *hdr; 2420 const char *fw; 2421 2422 IPW_LOCK_ASSERT(sc); 2423 2424 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2425 ieee80211_state_name[vap->iv_state], sc->flags)); 2426 2427 /* 2428 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2429 * when loading the firmware and we don't want to be called during this 2430 * operation. 2431 */ 2432 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2433 return; 2434 sc->flags |= IPW_FLAG_INIT_LOCKED; 2435 2436 ipw_stop_locked(sc); 2437 2438 if (ipw_reset(sc) != 0) { 2439 device_printf(sc->sc_dev, "could not reset adapter\n"); 2440 goto fail; 2441 } 2442 2443 if (sc->sc_firmware == NULL) { 2444 device_printf(sc->sc_dev, "no firmware\n"); 2445 goto fail; 2446 } 2447 /* NB: consistency already checked on load */ 2448 fp = sc->sc_firmware; 2449 hdr = (const struct ipw_firmware_hdr *)fp->data; 2450 2451 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2452 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2453 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2454 device_printf(sc->sc_dev, "could not load microcode\n"); 2455 goto fail; 2456 } 2457 2458 ipw_stop_master(sc); 2459 2460 /* 2461 * Setup tx, rx and status rings. 2462 */ 2463 sc->txold = IPW_NTBD - 1; 2464 sc->txcur = 0; 2465 sc->txfree = IPW_NTBD - 2; 2466 sc->rxcur = IPW_NRBD - 1; 2467 2468 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2469 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2470 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2471 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2472 2473 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2474 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2475 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2476 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2477 2478 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2479 2480 fw = (const char *)fp->data + sizeof *hdr; 2481 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2482 device_printf(sc->sc_dev, "could not load firmware\n"); 2483 goto fail; 2484 } 2485 2486 sc->flags |= IPW_FLAG_FW_INITED; 2487 2488 /* retrieve information tables base addresses */ 2489 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2490 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2491 2492 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2493 2494 if (ipw_config(sc) != 0) { 2495 device_printf(sc->sc_dev, "device configuration failed\n"); 2496 goto fail; 2497 } 2498 2499 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2500 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2501 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2502 2503 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2504 return; 2505 2506 fail: 2507 ipw_stop_locked(sc); 2508 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2509 } 2510 2511 static int 2512 ipw_config(struct ipw_softc *sc) 2513 { 2514 struct ifnet *ifp = sc->sc_ifp; 2515 struct ieee80211com *ic = ifp->if_l2com; 2516 struct ipw_configuration config; 2517 uint32_t data; 2518 int error; 2519 2520 error = ipw_disable(sc); 2521 if (error != 0) 2522 return error; 2523 2524 switch (ic->ic_opmode) { 2525 case IEEE80211_M_STA: 2526 case IEEE80211_M_HOSTAP: 2527 case IEEE80211_M_WDS: /* XXX */ 2528 data = htole32(IPW_MODE_BSS); 2529 break; 2530 case IEEE80211_M_IBSS: 2531 case IEEE80211_M_AHDEMO: 2532 data = htole32(IPW_MODE_IBSS); 2533 break; 2534 case IEEE80211_M_MONITOR: 2535 data = htole32(IPW_MODE_MONITOR); 2536 break; 2537 } 2538 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2539 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2540 if (error != 0) 2541 return error; 2542 2543 if (ic->ic_opmode == IEEE80211_M_IBSS || 2544 ic->ic_opmode == IEEE80211_M_MONITOR) { 2545 error = ipw_setchannel(sc, ic->ic_curchan); 2546 if (error != 0) 2547 return error; 2548 } 2549 2550 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2551 return ipw_enable(sc); 2552 2553 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2554 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2555 if (ic->ic_opmode == IEEE80211_M_IBSS) 2556 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2557 if (ifp->if_flags & IFF_PROMISC) 2558 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2559 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2560 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2561 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2562 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2563 if (error != 0) 2564 return error; 2565 2566 data = htole32(0x3); /* 1, 2 */ 2567 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2568 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2569 if (error != 0) 2570 return error; 2571 2572 /* NB: use the same rate set */ 2573 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2574 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2575 if (error != 0) 2576 return error; 2577 2578 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2579 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2580 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2581 if (error != 0) 2582 return error; 2583 2584 data = htole32(IPW_POWER_MODE_CAM); 2585 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2586 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2587 if (error != 0) 2588 return error; 2589 2590 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2591 data = htole32(32); /* default value */ 2592 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2593 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2594 sizeof data); 2595 if (error != 0) 2596 return error; 2597 } 2598 2599 return 0; 2600 } 2601 2602 static void 2603 ipw_stop(void *priv) 2604 { 2605 struct ipw_softc *sc = priv; 2606 IPW_LOCK_DECL; 2607 2608 IPW_LOCK(sc); 2609 ipw_stop_locked(sc); 2610 IPW_UNLOCK(sc); 2611 } 2612 2613 static void 2614 ipw_stop_locked(struct ipw_softc *sc) 2615 { 2616 struct ifnet *ifp = sc->sc_ifp; 2617 int i; 2618 2619 IPW_LOCK_ASSERT(sc); 2620 2621 callout_stop(&sc->sc_wdtimer); 2622 ipw_stop_master(sc); 2623 2624 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2625 2626 /* 2627 * Release tx buffers. 2628 */ 2629 for (i = 0; i < IPW_NTBD; i++) 2630 ipw_release_sbd(sc, &sc->stbd_list[i]); 2631 2632 sc->sc_tx_timer = 0; 2633 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2634 } 2635 2636 static int 2637 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2638 { 2639 struct ipw_softc *sc = arg1; 2640 uint32_t i, size, buf[256]; 2641 2642 memset(buf, 0, sizeof buf); 2643 2644 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2645 return SYSCTL_OUT(req, buf, sizeof buf); 2646 2647 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2648 2649 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2650 for (i = 1; i < size; i++) 2651 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2652 2653 return SYSCTL_OUT(req, buf, size); 2654 } 2655 2656 static int 2657 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2658 { 2659 struct ipw_softc *sc = arg1; 2660 int val; 2661 2662 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2663 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2664 2665 return SYSCTL_OUT(req, &val, sizeof val); 2666 } 2667 2668 static uint32_t 2669 ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2670 { 2671 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2672 } 2673 2674 static void 2675 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2676 { 2677 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2678 } 2679 2680 #if 0 2681 static int 2682 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2683 { 2684 uint32_t addr, info; 2685 uint16_t count, size; 2686 uint32_t total; 2687 2688 /* addr[4] + count[2] + size[2] */ 2689 addr = MEM_READ_4(sc, sc->table2_base + off); 2690 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2691 2692 count = info >> 16; 2693 size = info & 0xffff; 2694 total = count * size; 2695 2696 if (total > *len) { 2697 *len = total; 2698 return EINVAL; 2699 } 2700 2701 *len = total; 2702 ipw_read_mem_1(sc, addr, buf, total); 2703 2704 return 0; 2705 } 2706 2707 static void 2708 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2709 bus_size_t count) 2710 { 2711 for (; count > 0; offset++, datap++, count--) { 2712 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2713 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2714 } 2715 } 2716 #endif 2717 2718 static void 2719 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2720 bus_size_t count) 2721 { 2722 for (; count > 0; offset++, datap++, count--) { 2723 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2724 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2725 } 2726 } 2727 2728 static void 2729 ipw_scan_start(struct ieee80211com *ic) 2730 { 2731 struct ifnet *ifp = ic->ic_ifp; 2732 struct ipw_softc *sc = ifp->if_softc; 2733 IPW_LOCK_DECL; 2734 2735 IPW_LOCK(sc); 2736 if (!(sc->flags & IPW_FLAG_SCANNING)) 2737 taskqueue_enqueue(taskqueue_swi, &sc->sc_scan_task); 2738 IPW_UNLOCK(sc); 2739 } 2740 2741 static void 2742 ipw_set_channel(struct ieee80211com *ic) 2743 { 2744 struct ifnet *ifp = ic->ic_ifp; 2745 struct ipw_softc *sc = ifp->if_softc; 2746 IPW_LOCK_DECL; 2747 2748 IPW_LOCK(sc); 2749 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2750 ipw_disable(sc); 2751 ipw_setchannel(sc, ic->ic_curchan); 2752 ipw_enable(sc); 2753 } 2754 IPW_UNLOCK(sc); 2755 } 2756 2757 static void 2758 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2759 { 2760 /* NB: all channels are scanned at once */ 2761 } 2762 2763 static void 2764 ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2765 { 2766 /* NB: don't try to abort scan; wait for firmware to finish */ 2767 } 2768 2769 static void 2770 ipw_scan_end(struct ieee80211com *ic) 2771 { 2772 struct ifnet *ifp = ic->ic_ifp; 2773 struct ipw_softc *sc = ifp->if_softc; 2774 IPW_LOCK_DECL; 2775 2776 IPW_LOCK(sc); 2777 sc->flags &= ~IPW_FLAG_SCANNING; 2778 IPW_UNLOCK(sc); 2779 } 2780