1 /*- 2 * Copyright (c) 2004-2006 3 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 4 * Copyright (c) 2006 Sam Leffler, Errno Consulting 5 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 /*- 34 * Intel(R) PRO/Wireless 2100 MiniPCI driver 35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 36 */ 37 38 #include <sys/param.h> 39 #include <sys/sysctl.h> 40 #include <sys/sockio.h> 41 #include <sys/mbuf.h> 42 #include <sys/kernel.h> 43 #include <sys/socket.h> 44 #include <sys/systm.h> 45 #include <sys/malloc.h> 46 #include <sys/queue.h> 47 #include <sys/taskqueue.h> 48 #include <sys/module.h> 49 #include <sys/bus.h> 50 #include <sys/endian.h> 51 #include <sys/linker.h> 52 #include <sys/firmware.h> 53 54 #include <machine/bus.h> 55 #include <machine/resource.h> 56 #include <sys/rman.h> 57 58 #include <dev/pci/pcireg.h> 59 #include <dev/pci/pcivar.h> 60 61 #include <net/bpf.h> 62 #include <net/if.h> 63 #include <net/if_var.h> 64 #include <net/if_arp.h> 65 #include <net/ethernet.h> 66 #include <net/if_dl.h> 67 #include <net/if_media.h> 68 #include <net/if_types.h> 69 70 #include <net80211/ieee80211_var.h> 71 #include <net80211/ieee80211_radiotap.h> 72 73 #include <netinet/in.h> 74 #include <netinet/in_systm.h> 75 #include <netinet/in_var.h> 76 #include <netinet/ip.h> 77 #include <netinet/if_ether.h> 78 79 #include <dev/ipw/if_ipwreg.h> 80 #include <dev/ipw/if_ipwvar.h> 81 82 #define IPW_DEBUG 83 #ifdef IPW_DEBUG 84 #define DPRINTF(x) do { if (ipw_debug > 0) printf x; } while (0) 85 #define DPRINTFN(n, x) do { if (ipw_debug >= (n)) printf x; } while (0) 86 int ipw_debug = 0; 87 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level"); 88 #else 89 #define DPRINTF(x) 90 #define DPRINTFN(n, x) 91 #endif 92 93 MODULE_DEPEND(ipw, pci, 1, 1, 1); 94 MODULE_DEPEND(ipw, wlan, 1, 1, 1); 95 MODULE_DEPEND(ipw, firmware, 1, 1, 1); 96 97 struct ipw_ident { 98 uint16_t vendor; 99 uint16_t device; 100 const char *name; 101 }; 102 103 static const struct ipw_ident ipw_ident_table[] = { 104 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" }, 105 106 { 0, 0, NULL } 107 }; 108 109 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *, 110 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 111 const uint8_t [IEEE80211_ADDR_LEN], 112 const uint8_t [IEEE80211_ADDR_LEN]); 113 static void ipw_vap_delete(struct ieee80211vap *); 114 static int ipw_dma_alloc(struct ipw_softc *); 115 static void ipw_release(struct ipw_softc *); 116 static void ipw_media_status(struct ifnet *, struct ifmediareq *); 117 static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int); 118 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t); 119 static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *); 120 static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *); 121 static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *, 122 struct ipw_soft_bd *, struct ipw_soft_buf *); 123 static void ipw_rx_intr(struct ipw_softc *); 124 static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *); 125 static void ipw_tx_intr(struct ipw_softc *); 126 static void ipw_intr(void *); 127 static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int); 128 static const char * ipw_cmdname(int); 129 static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t); 130 static int ipw_tx_start(struct ifnet *, struct mbuf *, 131 struct ieee80211_node *); 132 static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *, 133 const struct ieee80211_bpf_params *); 134 static void ipw_start(struct ifnet *); 135 static void ipw_start_locked(struct ifnet *); 136 static void ipw_watchdog(void *); 137 static int ipw_ioctl(struct ifnet *, u_long, caddr_t); 138 static void ipw_stop_master(struct ipw_softc *); 139 static int ipw_enable(struct ipw_softc *); 140 static int ipw_disable(struct ipw_softc *); 141 static int ipw_reset(struct ipw_softc *); 142 static int ipw_load_ucode(struct ipw_softc *, const char *, int); 143 static int ipw_load_firmware(struct ipw_softc *, const char *, int); 144 static int ipw_config(struct ipw_softc *); 145 static void ipw_assoc(struct ieee80211com *, struct ieee80211vap *); 146 static void ipw_disassoc(struct ieee80211com *, struct ieee80211vap *); 147 static void ipw_init_task(void *, int); 148 static void ipw_init(void *); 149 static void ipw_init_locked(struct ipw_softc *); 150 static void ipw_stop(void *); 151 static void ipw_stop_locked(struct ipw_softc *); 152 static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS); 153 static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS); 154 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t); 155 static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t); 156 #if 0 157 static int ipw_read_table2(struct ipw_softc *, uint32_t, void *, 158 uint32_t *); 159 static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *, 160 bus_size_t); 161 #endif 162 static void ipw_write_mem_1(struct ipw_softc *, bus_size_t, 163 const uint8_t *, bus_size_t); 164 static int ipw_scan(struct ipw_softc *); 165 static void ipw_scan_start(struct ieee80211com *); 166 static void ipw_scan_end(struct ieee80211com *); 167 static void ipw_set_channel(struct ieee80211com *); 168 static void ipw_scan_curchan(struct ieee80211_scan_state *, 169 unsigned long maxdwell); 170 static void ipw_scan_mindwell(struct ieee80211_scan_state *); 171 172 static int ipw_probe(device_t); 173 static int ipw_attach(device_t); 174 static int ipw_detach(device_t); 175 static int ipw_shutdown(device_t); 176 static int ipw_suspend(device_t); 177 static int ipw_resume(device_t); 178 179 static device_method_t ipw_methods[] = { 180 /* Device interface */ 181 DEVMETHOD(device_probe, ipw_probe), 182 DEVMETHOD(device_attach, ipw_attach), 183 DEVMETHOD(device_detach, ipw_detach), 184 DEVMETHOD(device_shutdown, ipw_shutdown), 185 DEVMETHOD(device_suspend, ipw_suspend), 186 DEVMETHOD(device_resume, ipw_resume), 187 188 DEVMETHOD_END 189 }; 190 191 static driver_t ipw_driver = { 192 "ipw", 193 ipw_methods, 194 sizeof (struct ipw_softc) 195 }; 196 197 static devclass_t ipw_devclass; 198 199 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL); 200 201 MODULE_VERSION(ipw, 1); 202 203 static int 204 ipw_probe(device_t dev) 205 { 206 const struct ipw_ident *ident; 207 208 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 209 if (pci_get_vendor(dev) == ident->vendor && 210 pci_get_device(dev) == ident->device) { 211 device_set_desc(dev, ident->name); 212 return (BUS_PROBE_DEFAULT); 213 } 214 } 215 return ENXIO; 216 } 217 218 /* Base Address Register */ 219 static int 220 ipw_attach(device_t dev) 221 { 222 struct ipw_softc *sc = device_get_softc(dev); 223 struct ifnet *ifp; 224 struct ieee80211com *ic; 225 struct ieee80211_channel *c; 226 uint16_t val; 227 int error, i; 228 uint8_t macaddr[IEEE80211_ADDR_LEN]; 229 230 sc->sc_dev = dev; 231 232 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 233 MTX_DEF | MTX_RECURSE); 234 235 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 236 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 237 238 pci_write_config(dev, 0x41, 0, 1); 239 240 /* enable bus-mastering */ 241 pci_enable_busmaster(dev); 242 243 i = PCIR_BAR(0); 244 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE); 245 if (sc->mem == NULL) { 246 device_printf(dev, "could not allocate memory resource\n"); 247 goto fail; 248 } 249 250 sc->sc_st = rman_get_bustag(sc->mem); 251 sc->sc_sh = rman_get_bushandle(sc->mem); 252 253 i = 0; 254 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i, 255 RF_ACTIVE | RF_SHAREABLE); 256 if (sc->irq == NULL) { 257 device_printf(dev, "could not allocate interrupt resource\n"); 258 goto fail1; 259 } 260 261 if (ipw_reset(sc) != 0) { 262 device_printf(dev, "could not reset adapter\n"); 263 goto fail2; 264 } 265 266 if (ipw_dma_alloc(sc) != 0) { 267 device_printf(dev, "could not allocate DMA resources\n"); 268 goto fail2; 269 } 270 271 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 272 if (ifp == NULL) { 273 device_printf(dev, "can not if_alloc()\n"); 274 goto fail3; 275 } 276 ic = ifp->if_l2com; 277 278 ifp->if_softc = sc; 279 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 280 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 281 ifp->if_init = ipw_init; 282 ifp->if_ioctl = ipw_ioctl; 283 ifp->if_start = ipw_start; 284 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 285 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 286 IFQ_SET_READY(&ifp->if_snd); 287 288 ic->ic_ifp = ifp; 289 ic->ic_softc = sc; 290 ic->ic_name = device_get_nameunit(dev); 291 ic->ic_opmode = IEEE80211_M_STA; 292 ic->ic_phytype = IEEE80211_T_DS; 293 294 /* set device capabilities */ 295 ic->ic_caps = 296 IEEE80211_C_STA /* station mode supported */ 297 | IEEE80211_C_IBSS /* IBSS mode supported */ 298 | IEEE80211_C_MONITOR /* monitor mode supported */ 299 | IEEE80211_C_PMGT /* power save supported */ 300 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 301 | IEEE80211_C_WPA /* 802.11i supported */ 302 ; 303 304 /* read MAC address from EEPROM */ 305 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 306 macaddr[0] = val >> 8; 307 macaddr[1] = val & 0xff; 308 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 309 macaddr[2] = val >> 8; 310 macaddr[3] = val & 0xff; 311 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 312 macaddr[4] = val >> 8; 313 macaddr[5] = val & 0xff; 314 315 /* set supported .11b channels (read from EEPROM) */ 316 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 317 val = 0x7ff; /* default to channels 1-11 */ 318 val <<= 1; 319 for (i = 1; i < 16; i++) { 320 if (val & (1 << i)) { 321 c = &ic->ic_channels[ic->ic_nchans++]; 322 c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 323 c->ic_flags = IEEE80211_CHAN_B; 324 c->ic_ieee = i; 325 } 326 } 327 328 /* check support for radio transmitter switch in EEPROM */ 329 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 330 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 331 332 ieee80211_ifattach(ic, macaddr); 333 ic->ic_scan_start = ipw_scan_start; 334 ic->ic_scan_end = ipw_scan_end; 335 ic->ic_set_channel = ipw_set_channel; 336 ic->ic_scan_curchan = ipw_scan_curchan; 337 ic->ic_scan_mindwell = ipw_scan_mindwell; 338 ic->ic_raw_xmit = ipw_raw_xmit; 339 340 ic->ic_vap_create = ipw_vap_create; 341 ic->ic_vap_delete = ipw_vap_delete; 342 343 ieee80211_radiotap_attach(ic, 344 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 345 IPW_TX_RADIOTAP_PRESENT, 346 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 347 IPW_RX_RADIOTAP_PRESENT); 348 349 /* 350 * Add a few sysctl knobs. 351 */ 352 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 353 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 354 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 355 "radio transmitter switch state (0=off, 1=on)"); 356 357 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 358 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 359 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 360 "statistics"); 361 362 /* 363 * Hook our interrupt after all initialization is complete. 364 */ 365 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 366 NULL, ipw_intr, sc, &sc->sc_ih); 367 if (error != 0) { 368 device_printf(dev, "could not set up interrupt\n"); 369 goto fail4; 370 } 371 372 if (bootverbose) 373 ieee80211_announce(ic); 374 375 return 0; 376 fail4: 377 if_free(ifp); 378 fail3: 379 ipw_release(sc); 380 fail2: 381 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 382 fail1: 383 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 384 sc->mem); 385 fail: 386 mtx_destroy(&sc->sc_mtx); 387 return ENXIO; 388 } 389 390 static int 391 ipw_detach(device_t dev) 392 { 393 struct ipw_softc *sc = device_get_softc(dev); 394 struct ifnet *ifp = sc->sc_ifp; 395 struct ieee80211com *ic = ifp->if_l2com; 396 397 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 398 399 ieee80211_draintask(ic, &sc->sc_init_task); 400 ipw_stop(sc); 401 402 ieee80211_ifdetach(ic); 403 404 callout_drain(&sc->sc_wdtimer); 405 406 ipw_release(sc); 407 408 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 409 410 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 411 sc->mem); 412 413 if_free(ifp); 414 415 if (sc->sc_firmware != NULL) { 416 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 417 sc->sc_firmware = NULL; 418 } 419 420 mtx_destroy(&sc->sc_mtx); 421 422 return 0; 423 } 424 425 static struct ieee80211vap * 426 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 427 enum ieee80211_opmode opmode, int flags, 428 const uint8_t bssid[IEEE80211_ADDR_LEN], 429 const uint8_t mac[IEEE80211_ADDR_LEN]) 430 { 431 struct ifnet *ifp = ic->ic_ifp; 432 struct ipw_softc *sc = ifp->if_softc; 433 struct ipw_vap *ivp; 434 struct ieee80211vap *vap; 435 const struct firmware *fp; 436 const struct ipw_firmware_hdr *hdr; 437 const char *imagename; 438 439 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 440 return NULL; 441 442 switch (opmode) { 443 case IEEE80211_M_STA: 444 imagename = "ipw_bss"; 445 break; 446 case IEEE80211_M_IBSS: 447 imagename = "ipw_ibss"; 448 break; 449 case IEEE80211_M_MONITOR: 450 imagename = "ipw_monitor"; 451 break; 452 default: 453 return NULL; 454 } 455 456 /* 457 * Load firmware image using the firmware(9) subsystem. Doing 458 * this unlocked is ok since we're single-threaded by the 459 * 802.11 layer. 460 */ 461 if (sc->sc_firmware == NULL || 462 strcmp(sc->sc_firmware->name, imagename) != 0) { 463 if (sc->sc_firmware != NULL) 464 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 465 sc->sc_firmware = firmware_get(imagename); 466 } 467 if (sc->sc_firmware == NULL) { 468 device_printf(sc->sc_dev, 469 "could not load firmware image '%s'\n", imagename); 470 return NULL; 471 } 472 fp = sc->sc_firmware; 473 if (fp->datasize < sizeof *hdr) { 474 device_printf(sc->sc_dev, 475 "firmware image too short %zu\n", fp->datasize); 476 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 477 sc->sc_firmware = NULL; 478 return NULL; 479 } 480 hdr = (const struct ipw_firmware_hdr *)fp->data; 481 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 482 le32toh(hdr->ucodesz)) { 483 device_printf(sc->sc_dev, 484 "firmware image too short %zu\n", fp->datasize); 485 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 486 sc->sc_firmware = NULL; 487 return NULL; 488 } 489 490 ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap), 491 M_80211_VAP, M_NOWAIT | M_ZERO); 492 if (ivp == NULL) 493 return NULL; 494 vap = &ivp->vap; 495 496 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 497 /* override with driver methods */ 498 ivp->newstate = vap->iv_newstate; 499 vap->iv_newstate = ipw_newstate; 500 501 /* complete setup */ 502 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status); 503 ic->ic_opmode = opmode; 504 return vap; 505 } 506 507 static void 508 ipw_vap_delete(struct ieee80211vap *vap) 509 { 510 struct ipw_vap *ivp = IPW_VAP(vap); 511 512 ieee80211_vap_detach(vap); 513 free(ivp, M_80211_VAP); 514 } 515 516 static int 517 ipw_dma_alloc(struct ipw_softc *sc) 518 { 519 struct ipw_soft_bd *sbd; 520 struct ipw_soft_hdr *shdr; 521 struct ipw_soft_buf *sbuf; 522 bus_addr_t physaddr; 523 int error, i; 524 525 /* 526 * Allocate parent DMA tag for subsequent allocations. 527 */ 528 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 529 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 530 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 531 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat); 532 if (error != 0) { 533 device_printf(sc->sc_dev, "could not create parent DMA tag\n"); 534 goto fail; 535 } 536 537 /* 538 * Allocate and map tx ring. 539 */ 540 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 541 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 542 NULL, &sc->tbd_dmat); 543 if (error != 0) { 544 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 545 goto fail; 546 } 547 548 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 549 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 550 if (error != 0) { 551 device_printf(sc->sc_dev, 552 "could not allocate tx ring DMA memory\n"); 553 goto fail; 554 } 555 556 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 557 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 558 if (error != 0) { 559 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 560 goto fail; 561 } 562 563 /* 564 * Allocate and map rx ring. 565 */ 566 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 567 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 568 NULL, &sc->rbd_dmat); 569 if (error != 0) { 570 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 571 goto fail; 572 } 573 574 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 575 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 576 if (error != 0) { 577 device_printf(sc->sc_dev, 578 "could not allocate rx ring DMA memory\n"); 579 goto fail; 580 } 581 582 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 583 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 584 if (error != 0) { 585 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 586 goto fail; 587 } 588 589 /* 590 * Allocate and map status ring. 591 */ 592 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 593 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 594 NULL, NULL, &sc->status_dmat); 595 if (error != 0) { 596 device_printf(sc->sc_dev, 597 "could not create status ring DMA tag\n"); 598 goto fail; 599 } 600 601 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 602 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 603 if (error != 0) { 604 device_printf(sc->sc_dev, 605 "could not allocate status ring DMA memory\n"); 606 goto fail; 607 } 608 609 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 610 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 611 0); 612 if (error != 0) { 613 device_printf(sc->sc_dev, 614 "could not map status ring DMA memory\n"); 615 goto fail; 616 } 617 618 /* 619 * Allocate command DMA map. 620 */ 621 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 622 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 623 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 624 if (error != 0) { 625 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 626 goto fail; 627 } 628 629 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 630 if (error != 0) { 631 device_printf(sc->sc_dev, 632 "could not create command DMA map\n"); 633 goto fail; 634 } 635 636 /* 637 * Allocate headers DMA maps. 638 */ 639 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 640 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 641 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 642 if (error != 0) { 643 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 644 goto fail; 645 } 646 647 SLIST_INIT(&sc->free_shdr); 648 for (i = 0; i < IPW_NDATA; i++) { 649 shdr = &sc->shdr_list[i]; 650 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 651 if (error != 0) { 652 device_printf(sc->sc_dev, 653 "could not create header DMA map\n"); 654 goto fail; 655 } 656 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 657 } 658 659 /* 660 * Allocate tx buffers DMA maps. 661 */ 662 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 663 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 664 NULL, NULL, &sc->txbuf_dmat); 665 if (error != 0) { 666 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 667 goto fail; 668 } 669 670 SLIST_INIT(&sc->free_sbuf); 671 for (i = 0; i < IPW_NDATA; i++) { 672 sbuf = &sc->tx_sbuf_list[i]; 673 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 674 if (error != 0) { 675 device_printf(sc->sc_dev, 676 "could not create tx DMA map\n"); 677 goto fail; 678 } 679 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 680 } 681 682 /* 683 * Initialize tx ring. 684 */ 685 for (i = 0; i < IPW_NTBD; i++) { 686 sbd = &sc->stbd_list[i]; 687 sbd->bd = &sc->tbd_list[i]; 688 sbd->type = IPW_SBD_TYPE_NOASSOC; 689 } 690 691 /* 692 * Pre-allocate rx buffers and DMA maps. 693 */ 694 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 695 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 696 NULL, &sc->rxbuf_dmat); 697 if (error != 0) { 698 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 699 goto fail; 700 } 701 702 for (i = 0; i < IPW_NRBD; i++) { 703 sbd = &sc->srbd_list[i]; 704 sbuf = &sc->rx_sbuf_list[i]; 705 sbd->bd = &sc->rbd_list[i]; 706 707 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 708 if (sbuf->m == NULL) { 709 device_printf(sc->sc_dev, 710 "could not allocate rx mbuf\n"); 711 error = ENOMEM; 712 goto fail; 713 } 714 715 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 716 if (error != 0) { 717 device_printf(sc->sc_dev, 718 "could not create rx DMA map\n"); 719 goto fail; 720 } 721 722 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 723 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 724 &physaddr, 0); 725 if (error != 0) { 726 device_printf(sc->sc_dev, 727 "could not map rx DMA memory\n"); 728 goto fail; 729 } 730 731 sbd->type = IPW_SBD_TYPE_DATA; 732 sbd->priv = sbuf; 733 sbd->bd->physaddr = htole32(physaddr); 734 sbd->bd->len = htole32(MCLBYTES); 735 } 736 737 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 738 739 return 0; 740 741 fail: ipw_release(sc); 742 return error; 743 } 744 745 static void 746 ipw_release(struct ipw_softc *sc) 747 { 748 struct ipw_soft_buf *sbuf; 749 int i; 750 751 if (sc->parent_dmat != NULL) { 752 bus_dma_tag_destroy(sc->parent_dmat); 753 } 754 755 if (sc->tbd_dmat != NULL) { 756 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 757 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map); 758 bus_dma_tag_destroy(sc->tbd_dmat); 759 } 760 761 if (sc->rbd_dmat != NULL) { 762 if (sc->rbd_list != NULL) { 763 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 764 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 765 sc->rbd_map); 766 } 767 bus_dma_tag_destroy(sc->rbd_dmat); 768 } 769 770 if (sc->status_dmat != NULL) { 771 if (sc->status_list != NULL) { 772 bus_dmamap_unload(sc->status_dmat, sc->status_map); 773 bus_dmamem_free(sc->status_dmat, sc->status_list, 774 sc->status_map); 775 } 776 bus_dma_tag_destroy(sc->status_dmat); 777 } 778 779 for (i = 0; i < IPW_NTBD; i++) 780 ipw_release_sbd(sc, &sc->stbd_list[i]); 781 782 if (sc->cmd_dmat != NULL) { 783 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 784 bus_dma_tag_destroy(sc->cmd_dmat); 785 } 786 787 if (sc->hdr_dmat != NULL) { 788 for (i = 0; i < IPW_NDATA; i++) 789 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 790 bus_dma_tag_destroy(sc->hdr_dmat); 791 } 792 793 if (sc->txbuf_dmat != NULL) { 794 for (i = 0; i < IPW_NDATA; i++) { 795 bus_dmamap_destroy(sc->txbuf_dmat, 796 sc->tx_sbuf_list[i].map); 797 } 798 bus_dma_tag_destroy(sc->txbuf_dmat); 799 } 800 801 if (sc->rxbuf_dmat != NULL) { 802 for (i = 0; i < IPW_NRBD; i++) { 803 sbuf = &sc->rx_sbuf_list[i]; 804 if (sbuf->m != NULL) { 805 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 806 BUS_DMASYNC_POSTREAD); 807 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 808 m_freem(sbuf->m); 809 } 810 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 811 } 812 bus_dma_tag_destroy(sc->rxbuf_dmat); 813 } 814 } 815 816 static int 817 ipw_shutdown(device_t dev) 818 { 819 struct ipw_softc *sc = device_get_softc(dev); 820 821 ipw_stop(sc); 822 823 return 0; 824 } 825 826 static int 827 ipw_suspend(device_t dev) 828 { 829 struct ipw_softc *sc = device_get_softc(dev); 830 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 831 832 ieee80211_suspend_all(ic); 833 return 0; 834 } 835 836 static int 837 ipw_resume(device_t dev) 838 { 839 struct ipw_softc *sc = device_get_softc(dev); 840 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 841 842 pci_write_config(dev, 0x41, 0, 1); 843 844 ieee80211_resume_all(ic); 845 return 0; 846 } 847 848 static int 849 ipw_cvtrate(int ipwrate) 850 { 851 switch (ipwrate) { 852 case IPW_RATE_DS1: return 2; 853 case IPW_RATE_DS2: return 4; 854 case IPW_RATE_DS5: return 11; 855 case IPW_RATE_DS11: return 22; 856 } 857 return 0; 858 } 859 860 /* 861 * The firmware automatically adapts the transmit speed. We report its current 862 * value here. 863 */ 864 static void 865 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 866 { 867 struct ieee80211vap *vap = ifp->if_softc; 868 struct ieee80211com *ic = vap->iv_ic; 869 struct ipw_softc *sc = ic->ic_ifp->if_softc; 870 871 /* read current transmission rate from adapter */ 872 vap->iv_bss->ni_txrate = ipw_cvtrate( 873 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 874 ieee80211_media_status(ifp, imr); 875 } 876 877 static int 878 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 879 { 880 struct ipw_vap *ivp = IPW_VAP(vap); 881 struct ieee80211com *ic = vap->iv_ic; 882 struct ifnet *ifp = ic->ic_ifp; 883 struct ipw_softc *sc = ifp->if_softc; 884 enum ieee80211_state ostate; 885 886 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 887 ieee80211_state_name[vap->iv_state], 888 ieee80211_state_name[nstate], sc->flags)); 889 890 ostate = vap->iv_state; 891 IEEE80211_UNLOCK(ic); 892 893 switch (nstate) { 894 case IEEE80211_S_RUN: 895 if (ic->ic_opmode == IEEE80211_M_IBSS) { 896 /* 897 * XXX when joining an ibss network we are called 898 * with a SCAN -> RUN transition on scan complete. 899 * Use that to call ipw_assoc. On completing the 900 * join we are then called again with an AUTH -> RUN 901 * transition and we want to do nothing. This is 902 * all totally bogus and needs to be redone. 903 */ 904 if (ostate == IEEE80211_S_SCAN) 905 ipw_assoc(ic, vap); 906 } 907 break; 908 909 case IEEE80211_S_INIT: 910 if (sc->flags & IPW_FLAG_ASSOCIATED) 911 ipw_disassoc(ic, vap); 912 break; 913 914 case IEEE80211_S_AUTH: 915 /* 916 * Move to ASSOC state after the ipw_assoc() call. Firmware 917 * takes care of authentication, after the call we'll receive 918 * only an assoc response which would otherwise be discared 919 * if we are still in AUTH state. 920 */ 921 nstate = IEEE80211_S_ASSOC; 922 ipw_assoc(ic, vap); 923 break; 924 925 case IEEE80211_S_ASSOC: 926 /* 927 * If we are not transitioning from AUTH then resend the 928 * association request. 929 */ 930 if (ostate != IEEE80211_S_AUTH) 931 ipw_assoc(ic, vap); 932 break; 933 934 default: 935 break; 936 } 937 IEEE80211_LOCK(ic); 938 return ivp->newstate(vap, nstate, arg); 939 } 940 941 /* 942 * Read 16 bits at address 'addr' from the serial EEPROM. 943 */ 944 static uint16_t 945 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 946 { 947 uint32_t tmp; 948 uint16_t val; 949 int n; 950 951 /* clock C once before the first command */ 952 IPW_EEPROM_CTL(sc, 0); 953 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 954 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 955 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 956 957 /* write start bit (1) */ 958 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 959 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 960 961 /* write READ opcode (10) */ 962 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 963 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 964 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 965 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 966 967 /* write address A7-A0 */ 968 for (n = 7; n >= 0; n--) { 969 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 970 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 971 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 972 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 973 } 974 975 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 976 977 /* read data Q15-Q0 */ 978 val = 0; 979 for (n = 15; n >= 0; n--) { 980 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 981 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 982 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 983 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 984 } 985 986 IPW_EEPROM_CTL(sc, 0); 987 988 /* clear Chip Select and clock C */ 989 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 990 IPW_EEPROM_CTL(sc, 0); 991 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 992 993 return le16toh(val); 994 } 995 996 static void 997 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 998 { 999 struct ipw_cmd *cmd; 1000 1001 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1002 1003 cmd = mtod(sbuf->m, struct ipw_cmd *); 1004 1005 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 1006 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 1007 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 1008 le32toh(cmd->status))); 1009 1010 sc->flags &= ~IPW_FLAG_BUSY; 1011 wakeup(sc); 1012 } 1013 1014 static void 1015 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1016 { 1017 #define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1018 struct ifnet *ifp = sc->sc_ifp; 1019 struct ieee80211com *ic = ifp->if_l2com; 1020 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1021 uint32_t state; 1022 1023 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1024 1025 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1026 1027 switch (state) { 1028 case IPW_STATE_ASSOCIATED: 1029 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1030 IEEESTATE(vap), sc->flags)); 1031 /* XXX suppress state change in case the fw auto-associates */ 1032 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1033 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1034 IEEESTATE(vap), sc->flags)); 1035 break; 1036 } 1037 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1038 sc->flags |= IPW_FLAG_ASSOCIATED; 1039 break; 1040 1041 case IPW_STATE_SCANNING: 1042 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1043 IEEESTATE(vap), sc->flags)); 1044 /* 1045 * NB: Check driver state for association on assoc 1046 * loss as the firmware will immediately start to 1047 * scan and we would treat it as a beacon miss if 1048 * we checked the 802.11 layer state. 1049 */ 1050 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1051 IPW_UNLOCK(sc); 1052 /* XXX probably need to issue disassoc to fw */ 1053 ieee80211_beacon_miss(ic); 1054 IPW_LOCK(sc); 1055 } 1056 break; 1057 1058 case IPW_STATE_SCAN_COMPLETE: 1059 /* 1060 * XXX For some reason scan requests generate scan 1061 * started + scan done events before any traffic is 1062 * received (e.g. probe response frames). We work 1063 * around this by marking the HACK flag and skipping 1064 * the first scan complete event. 1065 */ 1066 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1067 IEEESTATE(vap), sc->flags)); 1068 if (sc->flags & IPW_FLAG_HACK) { 1069 sc->flags &= ~IPW_FLAG_HACK; 1070 break; 1071 } 1072 if (sc->flags & IPW_FLAG_SCANNING) { 1073 IPW_UNLOCK(sc); 1074 ieee80211_scan_done(vap); 1075 IPW_LOCK(sc); 1076 sc->flags &= ~IPW_FLAG_SCANNING; 1077 sc->sc_scan_timer = 0; 1078 } 1079 break; 1080 1081 case IPW_STATE_ASSOCIATION_LOST: 1082 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1083 IEEESTATE(vap), sc->flags)); 1084 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1085 if (vap->iv_state == IEEE80211_S_RUN) { 1086 IPW_UNLOCK(sc); 1087 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1088 IPW_LOCK(sc); 1089 } 1090 break; 1091 1092 case IPW_STATE_DISABLED: 1093 /* XXX? is this right? */ 1094 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1095 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1096 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1097 IEEESTATE(vap), sc->flags)); 1098 break; 1099 1100 case IPW_STATE_RADIO_DISABLED: 1101 device_printf(sc->sc_dev, "radio turned off\n"); 1102 ieee80211_notify_radio(ic, 0); 1103 ipw_stop_locked(sc); 1104 /* XXX start polling thread to detect radio on */ 1105 break; 1106 1107 default: 1108 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1109 __func__, state, IEEESTATE(vap), sc->flags)); 1110 break; 1111 } 1112 #undef IEEESTATE 1113 } 1114 1115 /* 1116 * Set driver state for current channel. 1117 */ 1118 static void 1119 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1120 { 1121 struct ifnet *ifp = sc->sc_ifp; 1122 struct ieee80211com *ic = ifp->if_l2com; 1123 1124 ic->ic_curchan = chan; 1125 ieee80211_radiotap_chan_change(ic); 1126 } 1127 1128 /* 1129 * XXX: Hack to set the current channel to the value advertised in beacons or 1130 * probe responses. Only used during AP detection. 1131 */ 1132 static void 1133 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1134 { 1135 struct ifnet *ifp = sc->sc_ifp; 1136 struct ieee80211com *ic = ifp->if_l2com; 1137 struct ieee80211_channel *c; 1138 struct ieee80211_frame *wh; 1139 uint8_t subtype; 1140 uint8_t *frm, *efrm; 1141 1142 wh = mtod(m, struct ieee80211_frame *); 1143 1144 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1145 return; 1146 1147 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1148 1149 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1150 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1151 return; 1152 1153 /* XXX use ieee80211_parse_beacon */ 1154 frm = (uint8_t *)(wh + 1); 1155 efrm = mtod(m, uint8_t *) + m->m_len; 1156 1157 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1158 while (frm < efrm) { 1159 if (*frm == IEEE80211_ELEMID_DSPARMS) 1160 #if IEEE80211_CHAN_MAX < 255 1161 if (frm[2] <= IEEE80211_CHAN_MAX) 1162 #endif 1163 { 1164 DPRINTF(("Fixing channel to %d\n", frm[2])); 1165 c = ieee80211_find_channel(ic, 1166 ieee80211_ieee2mhz(frm[2], 0), 1167 IEEE80211_CHAN_B); 1168 if (c == NULL) 1169 c = &ic->ic_channels[0]; 1170 ipw_setcurchan(sc, c); 1171 } 1172 1173 frm += frm[1] + 2; 1174 } 1175 } 1176 1177 static void 1178 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1179 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1180 { 1181 struct ifnet *ifp = sc->sc_ifp; 1182 struct ieee80211com *ic = ifp->if_l2com; 1183 struct mbuf *mnew, *m; 1184 struct ieee80211_node *ni; 1185 bus_addr_t physaddr; 1186 int error; 1187 int8_t rssi, nf; 1188 1189 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1190 status->rssi)); 1191 1192 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1193 le32toh(status->len) > MCLBYTES) 1194 return; 1195 1196 /* 1197 * Try to allocate a new mbuf for this ring element and load it before 1198 * processing the current mbuf. If the ring element cannot be loaded, 1199 * drop the received packet and reuse the old mbuf. In the unlikely 1200 * case that the old mbuf can't be reloaded either, explicitly panic. 1201 */ 1202 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1203 if (mnew == NULL) { 1204 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1205 return; 1206 } 1207 1208 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1209 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1210 1211 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1212 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1213 if (error != 0) { 1214 m_freem(mnew); 1215 1216 /* try to reload the old mbuf */ 1217 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1218 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1219 &physaddr, 0); 1220 if (error != 0) { 1221 /* very unlikely that it will fail... */ 1222 panic("%s: could not load old rx mbuf", 1223 device_get_name(sc->sc_dev)); 1224 } 1225 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1226 return; 1227 } 1228 1229 /* 1230 * New mbuf successfully loaded, update Rx ring and continue 1231 * processing. 1232 */ 1233 m = sbuf->m; 1234 sbuf->m = mnew; 1235 sbd->bd->physaddr = htole32(physaddr); 1236 1237 /* finalize mbuf */ 1238 m->m_pkthdr.rcvif = ifp; 1239 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1240 1241 rssi = status->rssi + IPW_RSSI_TO_DBM; 1242 nf = -95; 1243 if (ieee80211_radiotap_active(ic)) { 1244 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1245 1246 tap->wr_flags = 0; 1247 tap->wr_antsignal = rssi; 1248 tap->wr_antnoise = nf; 1249 } 1250 1251 if (sc->flags & IPW_FLAG_SCANNING) 1252 ipw_fix_channel(sc, m); 1253 1254 IPW_UNLOCK(sc); 1255 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1256 if (ni != NULL) { 1257 (void) ieee80211_input(ni, m, rssi - nf, nf); 1258 ieee80211_free_node(ni); 1259 } else 1260 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1261 IPW_LOCK(sc); 1262 1263 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1264 } 1265 1266 static void 1267 ipw_rx_intr(struct ipw_softc *sc) 1268 { 1269 struct ipw_status *status; 1270 struct ipw_soft_bd *sbd; 1271 struct ipw_soft_buf *sbuf; 1272 uint32_t r, i; 1273 1274 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1275 return; 1276 1277 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1278 1279 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1280 1281 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1282 status = &sc->status_list[i]; 1283 sbd = &sc->srbd_list[i]; 1284 sbuf = sbd->priv; 1285 1286 switch (le16toh(status->code) & 0xf) { 1287 case IPW_STATUS_CODE_COMMAND: 1288 ipw_rx_cmd_intr(sc, sbuf); 1289 break; 1290 1291 case IPW_STATUS_CODE_NEWSTATE: 1292 ipw_rx_newstate_intr(sc, sbuf); 1293 break; 1294 1295 case IPW_STATUS_CODE_DATA_802_3: 1296 case IPW_STATUS_CODE_DATA_802_11: 1297 ipw_rx_data_intr(sc, status, sbd, sbuf); 1298 break; 1299 1300 case IPW_STATUS_CODE_NOTIFICATION: 1301 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1302 le32toh(status->len), status->flags)); 1303 /* XXX maybe drive state machine AUTH->ASSOC? */ 1304 break; 1305 1306 default: 1307 device_printf(sc->sc_dev, "unexpected status code %u\n", 1308 le16toh(status->code)); 1309 } 1310 1311 /* firmware was killed, stop processing received frames */ 1312 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1313 return; 1314 1315 sbd->bd->flags = 0; 1316 } 1317 1318 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1319 1320 /* kick the firmware */ 1321 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1322 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1323 } 1324 1325 static void 1326 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1327 { 1328 struct ipw_soft_hdr *shdr; 1329 struct ipw_soft_buf *sbuf; 1330 1331 switch (sbd->type) { 1332 case IPW_SBD_TYPE_COMMAND: 1333 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1334 BUS_DMASYNC_POSTWRITE); 1335 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1336 break; 1337 1338 case IPW_SBD_TYPE_HEADER: 1339 shdr = sbd->priv; 1340 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1341 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1342 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1343 break; 1344 1345 case IPW_SBD_TYPE_DATA: 1346 sbuf = sbd->priv; 1347 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1348 BUS_DMASYNC_POSTWRITE); 1349 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1350 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1351 1352 if (sbuf->m->m_flags & M_TXCB) 1353 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1354 m_freem(sbuf->m); 1355 ieee80211_free_node(sbuf->ni); 1356 1357 sc->sc_tx_timer = 0; 1358 break; 1359 } 1360 1361 sbd->type = IPW_SBD_TYPE_NOASSOC; 1362 } 1363 1364 static void 1365 ipw_tx_intr(struct ipw_softc *sc) 1366 { 1367 struct ifnet *ifp = sc->sc_ifp; 1368 struct ipw_soft_bd *sbd; 1369 uint32_t r, i; 1370 1371 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1372 return; 1373 1374 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1375 1376 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1377 sbd = &sc->stbd_list[i]; 1378 1379 if (sbd->type == IPW_SBD_TYPE_DATA) 1380 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1381 1382 ipw_release_sbd(sc, sbd); 1383 sc->txfree++; 1384 } 1385 1386 /* remember what the firmware has processed */ 1387 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1388 1389 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1390 ipw_start_locked(ifp); 1391 } 1392 1393 static void 1394 ipw_fatal_error_intr(struct ipw_softc *sc) 1395 { 1396 struct ifnet *ifp = sc->sc_ifp; 1397 struct ieee80211com *ic = ifp->if_l2com; 1398 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1399 1400 device_printf(sc->sc_dev, "firmware error\n"); 1401 if (vap != NULL) { 1402 IPW_UNLOCK(sc); 1403 ieee80211_cancel_scan(vap); 1404 IPW_LOCK(sc); 1405 } 1406 ieee80211_runtask(ic, &sc->sc_init_task); 1407 } 1408 1409 static void 1410 ipw_intr(void *arg) 1411 { 1412 struct ipw_softc *sc = arg; 1413 uint32_t r; 1414 1415 IPW_LOCK(sc); 1416 1417 r = CSR_READ_4(sc, IPW_CSR_INTR); 1418 if (r == 0 || r == 0xffffffff) 1419 goto done; 1420 1421 /* disable interrupts */ 1422 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1423 1424 /* acknowledge all interrupts */ 1425 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1426 1427 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1428 ipw_fatal_error_intr(sc); 1429 goto done; 1430 } 1431 1432 if (r & IPW_INTR_FW_INIT_DONE) 1433 wakeup(sc); 1434 1435 if (r & IPW_INTR_RX_TRANSFER) 1436 ipw_rx_intr(sc); 1437 1438 if (r & IPW_INTR_TX_TRANSFER) 1439 ipw_tx_intr(sc); 1440 1441 /* re-enable interrupts */ 1442 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1443 done: 1444 IPW_UNLOCK(sc); 1445 } 1446 1447 static void 1448 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1449 { 1450 if (error != 0) 1451 return; 1452 1453 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1454 1455 *(bus_addr_t *)arg = segs[0].ds_addr; 1456 } 1457 1458 static const char * 1459 ipw_cmdname(int cmd) 1460 { 1461 #define N(a) (sizeof(a) / sizeof(a[0])) 1462 static const struct { 1463 int cmd; 1464 const char *name; 1465 } cmds[] = { 1466 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1467 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1468 { IPW_CMD_DISABLE, "DISABLE" }, 1469 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1470 { IPW_CMD_ENABLE, "ENABLE" }, 1471 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1472 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1473 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1474 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1475 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1476 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1477 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1478 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1479 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1480 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1481 { IPW_CMD_SET_MODE, "SET_MODE" }, 1482 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1483 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1484 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1485 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1486 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1487 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1488 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1489 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1490 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1491 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1492 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1493 1494 }; 1495 static char buf[12]; 1496 int i; 1497 1498 for (i = 0; i < N(cmds); i++) 1499 if (cmds[i].cmd == cmd) 1500 return cmds[i].name; 1501 snprintf(buf, sizeof(buf), "%u", cmd); 1502 return buf; 1503 #undef N 1504 } 1505 1506 /* 1507 * Send a command to the firmware and wait for the acknowledgement. 1508 */ 1509 static int 1510 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1511 { 1512 struct ipw_soft_bd *sbd; 1513 bus_addr_t physaddr; 1514 int error; 1515 1516 IPW_LOCK_ASSERT(sc); 1517 1518 if (sc->flags & IPW_FLAG_BUSY) { 1519 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1520 __func__, ipw_cmdname(type)); 1521 return EAGAIN; 1522 } 1523 sc->flags |= IPW_FLAG_BUSY; 1524 1525 sbd = &sc->stbd_list[sc->txcur]; 1526 1527 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1528 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1529 if (error != 0) { 1530 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1531 sc->flags &= ~IPW_FLAG_BUSY; 1532 return error; 1533 } 1534 1535 sc->cmd.type = htole32(type); 1536 sc->cmd.subtype = 0; 1537 sc->cmd.len = htole32(len); 1538 sc->cmd.seq = 0; 1539 memcpy(sc->cmd.data, data, len); 1540 1541 sbd->type = IPW_SBD_TYPE_COMMAND; 1542 sbd->bd->physaddr = htole32(physaddr); 1543 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1544 sbd->bd->nfrag = 1; 1545 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1546 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1547 1548 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1549 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1550 1551 #ifdef IPW_DEBUG 1552 if (ipw_debug >= 4) { 1553 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1554 0, 0, len); 1555 /* Print the data buffer in the higher debug level */ 1556 if (ipw_debug >= 9 && len > 0) { 1557 printf(" data: 0x"); 1558 for (int i = 1; i <= len; i++) 1559 printf("%1D", (u_char *)data + len - i, ""); 1560 } 1561 printf("\n"); 1562 } 1563 #endif 1564 1565 /* kick firmware */ 1566 sc->txfree--; 1567 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1568 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1569 1570 /* wait at most one second for command to complete */ 1571 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1572 if (error != 0) { 1573 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1574 __func__, ipw_cmdname(type), error); 1575 sc->flags &= ~IPW_FLAG_BUSY; 1576 return (error); 1577 } 1578 return (0); 1579 } 1580 1581 static int 1582 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1583 { 1584 struct ipw_softc *sc = ifp->if_softc; 1585 struct ieee80211com *ic = ifp->if_l2com; 1586 struct ieee80211vap *vap = ni->ni_vap; 1587 struct ieee80211_frame *wh; 1588 struct ipw_soft_bd *sbd; 1589 struct ipw_soft_hdr *shdr; 1590 struct ipw_soft_buf *sbuf; 1591 struct ieee80211_key *k; 1592 struct mbuf *mnew; 1593 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1594 bus_addr_t physaddr; 1595 int nsegs, error, i; 1596 1597 wh = mtod(m0, struct ieee80211_frame *); 1598 1599 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1600 k = ieee80211_crypto_encap(ni, m0); 1601 if (k == NULL) { 1602 m_freem(m0); 1603 return ENOBUFS; 1604 } 1605 /* packet header may have moved, reset our local pointer */ 1606 wh = mtod(m0, struct ieee80211_frame *); 1607 } 1608 1609 if (ieee80211_radiotap_active_vap(vap)) { 1610 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1611 1612 tap->wt_flags = 0; 1613 1614 ieee80211_radiotap_tx(vap, m0); 1615 } 1616 1617 shdr = SLIST_FIRST(&sc->free_shdr); 1618 sbuf = SLIST_FIRST(&sc->free_sbuf); 1619 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1620 1621 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1622 shdr->hdr.subtype = 0; 1623 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0; 1624 shdr->hdr.encrypt = 0; 1625 shdr->hdr.keyidx = 0; 1626 shdr->hdr.keysz = 0; 1627 shdr->hdr.fragmentsz = 0; 1628 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1629 if (ic->ic_opmode == IEEE80211_M_STA) 1630 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1631 else 1632 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1633 1634 /* trim IEEE802.11 header */ 1635 m_adj(m0, sizeof (struct ieee80211_frame)); 1636 1637 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1638 &nsegs, 0); 1639 if (error != 0 && error != EFBIG) { 1640 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1641 error); 1642 m_freem(m0); 1643 return error; 1644 } 1645 if (error != 0) { 1646 mnew = m_defrag(m0, M_NOWAIT); 1647 if (mnew == NULL) { 1648 device_printf(sc->sc_dev, 1649 "could not defragment mbuf\n"); 1650 m_freem(m0); 1651 return ENOBUFS; 1652 } 1653 m0 = mnew; 1654 1655 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1656 segs, &nsegs, 0); 1657 if (error != 0) { 1658 device_printf(sc->sc_dev, 1659 "could not map mbuf (error %d)\n", error); 1660 m_freem(m0); 1661 return error; 1662 } 1663 } 1664 1665 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1666 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1667 if (error != 0) { 1668 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1669 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1670 m_freem(m0); 1671 return error; 1672 } 1673 1674 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1675 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1676 1677 sbd = &sc->stbd_list[sc->txcur]; 1678 sbd->type = IPW_SBD_TYPE_HEADER; 1679 sbd->priv = shdr; 1680 sbd->bd->physaddr = htole32(physaddr); 1681 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1682 sbd->bd->nfrag = 1 + nsegs; 1683 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1684 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1685 1686 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1687 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1688 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1689 ":")); 1690 1691 sc->txfree--; 1692 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1693 1694 sbuf->m = m0; 1695 sbuf->ni = ni; 1696 1697 for (i = 0; i < nsegs; i++) { 1698 sbd = &sc->stbd_list[sc->txcur]; 1699 1700 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1701 sbd->bd->len = htole32(segs[i].ds_len); 1702 sbd->bd->nfrag = 0; 1703 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1704 if (i == nsegs - 1) { 1705 sbd->type = IPW_SBD_TYPE_DATA; 1706 sbd->priv = sbuf; 1707 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1708 } else { 1709 sbd->type = IPW_SBD_TYPE_NOASSOC; 1710 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1711 } 1712 1713 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1714 1715 sc->txfree--; 1716 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1717 } 1718 1719 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1720 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1721 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1722 1723 /* kick firmware */ 1724 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1725 1726 return 0; 1727 } 1728 1729 static int 1730 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1731 const struct ieee80211_bpf_params *params) 1732 { 1733 /* no support; just discard */ 1734 m_freem(m); 1735 ieee80211_free_node(ni); 1736 return 0; 1737 } 1738 1739 static void 1740 ipw_start(struct ifnet *ifp) 1741 { 1742 struct ipw_softc *sc = ifp->if_softc; 1743 1744 IPW_LOCK(sc); 1745 ipw_start_locked(ifp); 1746 IPW_UNLOCK(sc); 1747 } 1748 1749 static void 1750 ipw_start_locked(struct ifnet *ifp) 1751 { 1752 struct ipw_softc *sc = ifp->if_softc; 1753 struct ieee80211_node *ni; 1754 struct mbuf *m; 1755 1756 IPW_LOCK_ASSERT(sc); 1757 1758 for (;;) { 1759 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1760 if (m == NULL) 1761 break; 1762 if (sc->txfree < 1 + IPW_MAX_NSEG) { 1763 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1764 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1765 break; 1766 } 1767 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1768 if (ipw_tx_start(ifp, m, ni) != 0) { 1769 ieee80211_free_node(ni); 1770 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1771 break; 1772 } 1773 /* start watchdog timer */ 1774 sc->sc_tx_timer = 5; 1775 } 1776 } 1777 1778 static void 1779 ipw_watchdog(void *arg) 1780 { 1781 struct ipw_softc *sc = arg; 1782 struct ifnet *ifp = sc->sc_ifp; 1783 struct ieee80211com *ic = ifp->if_l2com; 1784 1785 IPW_LOCK_ASSERT(sc); 1786 1787 if (sc->sc_tx_timer > 0) { 1788 if (--sc->sc_tx_timer == 0) { 1789 if_printf(ifp, "device timeout\n"); 1790 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1791 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1792 } 1793 } 1794 if (sc->sc_scan_timer > 0) { 1795 if (--sc->sc_scan_timer == 0) { 1796 DPRINTFN(3, ("Scan timeout\n")); 1797 /* End the scan */ 1798 if (sc->flags & IPW_FLAG_SCANNING) { 1799 IPW_UNLOCK(sc); 1800 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1801 IPW_LOCK(sc); 1802 sc->flags &= ~IPW_FLAG_SCANNING; 1803 } 1804 } 1805 } 1806 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1807 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1808 } 1809 1810 static int 1811 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1812 { 1813 struct ipw_softc *sc = ifp->if_softc; 1814 struct ieee80211com *ic = ifp->if_l2com; 1815 struct ifreq *ifr = (struct ifreq *) data; 1816 int error = 0, startall = 0; 1817 1818 switch (cmd) { 1819 case SIOCSIFFLAGS: 1820 IPW_LOCK(sc); 1821 if (ifp->if_flags & IFF_UP) { 1822 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1823 ipw_init_locked(sc); 1824 startall = 1; 1825 } 1826 } else { 1827 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1828 ipw_stop_locked(sc); 1829 } 1830 IPW_UNLOCK(sc); 1831 if (startall) 1832 ieee80211_start_all(ic); 1833 break; 1834 case SIOCGIFMEDIA: 1835 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1836 break; 1837 case SIOCGIFADDR: 1838 error = ether_ioctl(ifp, cmd, data); 1839 break; 1840 default: 1841 error = EINVAL; 1842 break; 1843 } 1844 return error; 1845 } 1846 1847 static void 1848 ipw_stop_master(struct ipw_softc *sc) 1849 { 1850 uint32_t tmp; 1851 int ntries; 1852 1853 /* disable interrupts */ 1854 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1855 1856 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1857 for (ntries = 0; ntries < 50; ntries++) { 1858 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1859 break; 1860 DELAY(10); 1861 } 1862 if (ntries == 50) 1863 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1864 1865 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1866 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1867 1868 /* Clear all flags except the following */ 1869 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1870 } 1871 1872 static int 1873 ipw_reset(struct ipw_softc *sc) 1874 { 1875 uint32_t tmp; 1876 int ntries; 1877 1878 ipw_stop_master(sc); 1879 1880 /* move adapter to D0 state */ 1881 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1882 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1883 1884 /* wait for clock stabilization */ 1885 for (ntries = 0; ntries < 1000; ntries++) { 1886 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1887 break; 1888 DELAY(200); 1889 } 1890 if (ntries == 1000) 1891 return EIO; 1892 1893 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1894 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1895 1896 DELAY(10); 1897 1898 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1899 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1900 1901 return 0; 1902 } 1903 1904 static int 1905 ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1906 { 1907 int ms = hz < 1000 ? 1 : hz/10; 1908 int i, error; 1909 1910 for (i = 0; i < 100; i++) { 1911 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1912 return 0; 1913 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1914 if (error == 0 || error != EWOULDBLOCK) 1915 return 0; 1916 } 1917 DPRINTF(("%s: timeout waiting for %s\n", 1918 __func__, waitfor ? "disable" : "enable")); 1919 return ETIMEDOUT; 1920 } 1921 1922 static int 1923 ipw_enable(struct ipw_softc *sc) 1924 { 1925 int error; 1926 1927 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1928 DPRINTF(("Enable adapter\n")); 1929 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1930 if (error != 0) 1931 return error; 1932 error = ipw_waitfordisable(sc, 0); 1933 if (error != 0) 1934 return error; 1935 sc->flags |= IPW_FLAG_ENABLED; 1936 } 1937 return 0; 1938 } 1939 1940 static int 1941 ipw_disable(struct ipw_softc *sc) 1942 { 1943 int error; 1944 1945 if (sc->flags & IPW_FLAG_ENABLED) { 1946 DPRINTF(("Disable adapter\n")); 1947 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1948 if (error != 0) 1949 return error; 1950 error = ipw_waitfordisable(sc, 1); 1951 if (error != 0) 1952 return error; 1953 sc->flags &= ~IPW_FLAG_ENABLED; 1954 } 1955 return 0; 1956 } 1957 1958 /* 1959 * Upload the microcode to the device. 1960 */ 1961 static int 1962 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1963 { 1964 int ntries; 1965 1966 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1967 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1968 1969 MEM_WRITE_2(sc, 0x220000, 0x0703); 1970 MEM_WRITE_2(sc, 0x220000, 0x0707); 1971 1972 MEM_WRITE_1(sc, 0x210014, 0x72); 1973 MEM_WRITE_1(sc, 0x210014, 0x72); 1974 1975 MEM_WRITE_1(sc, 0x210000, 0x40); 1976 MEM_WRITE_1(sc, 0x210000, 0x00); 1977 MEM_WRITE_1(sc, 0x210000, 0x40); 1978 1979 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1980 1981 MEM_WRITE_1(sc, 0x210000, 0x00); 1982 MEM_WRITE_1(sc, 0x210000, 0x00); 1983 MEM_WRITE_1(sc, 0x210000, 0x80); 1984 1985 MEM_WRITE_2(sc, 0x220000, 0x0703); 1986 MEM_WRITE_2(sc, 0x220000, 0x0707); 1987 1988 MEM_WRITE_1(sc, 0x210014, 0x72); 1989 MEM_WRITE_1(sc, 0x210014, 0x72); 1990 1991 MEM_WRITE_1(sc, 0x210000, 0x00); 1992 MEM_WRITE_1(sc, 0x210000, 0x80); 1993 1994 for (ntries = 0; ntries < 10; ntries++) { 1995 if (MEM_READ_1(sc, 0x210000) & 1) 1996 break; 1997 DELAY(10); 1998 } 1999 if (ntries == 10) { 2000 device_printf(sc->sc_dev, 2001 "timeout waiting for ucode to initialize\n"); 2002 return EIO; 2003 } 2004 2005 MEM_WRITE_4(sc, 0x3000e0, 0); 2006 2007 return 0; 2008 } 2009 2010 /* set of macros to handle unaligned little endian data in firmware image */ 2011 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2012 #define GETLE16(p) ((p)[0] | (p)[1] << 8) 2013 static int 2014 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 2015 { 2016 const uint8_t *p, *end; 2017 uint32_t tmp, dst; 2018 uint16_t len; 2019 int error; 2020 2021 p = fw; 2022 end = fw + size; 2023 while (p < end) { 2024 dst = GETLE32(p); p += 4; 2025 len = GETLE16(p); p += 2; 2026 2027 ipw_write_mem_1(sc, dst, p, len); 2028 p += len; 2029 } 2030 2031 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 2032 IPW_IO_LED_OFF); 2033 2034 /* enable interrupts */ 2035 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 2036 2037 /* kick the firmware */ 2038 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 2039 2040 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 2041 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 2042 2043 /* wait at most one second for firmware initialization to complete */ 2044 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 2045 device_printf(sc->sc_dev, "timeout waiting for firmware " 2046 "initialization to complete\n"); 2047 return error; 2048 } 2049 2050 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2051 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2052 IPW_IO_GPIO3_MASK); 2053 2054 return 0; 2055 } 2056 2057 static int 2058 ipw_setwepkeys(struct ipw_softc *sc) 2059 { 2060 struct ifnet *ifp = sc->sc_ifp; 2061 struct ieee80211com *ic = ifp->if_l2com; 2062 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2063 struct ipw_wep_key wepkey; 2064 struct ieee80211_key *wk; 2065 int error, i; 2066 2067 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2068 wk = &vap->iv_nw_keys[i]; 2069 2070 if (wk->wk_cipher == NULL || 2071 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2072 continue; 2073 2074 wepkey.idx = i; 2075 wepkey.len = wk->wk_keylen; 2076 memset(wepkey.key, 0, sizeof wepkey.key); 2077 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2078 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2079 wepkey.len)); 2080 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2081 sizeof wepkey); 2082 if (error != 0) 2083 return error; 2084 } 2085 return 0; 2086 } 2087 2088 static int 2089 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2090 { 2091 struct ipw_wpa_ie wpaie; 2092 2093 memset(&wpaie, 0, sizeof(wpaie)); 2094 wpaie.len = htole32(ielen); 2095 /* XXX verify length */ 2096 memcpy(&wpaie.ie, ie, ielen); 2097 DPRINTF(("Setting WPA IE\n")); 2098 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2099 } 2100 2101 static int 2102 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2103 { 2104 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2105 2106 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2107 DPRINTF(("Setting mandatory BSSID to null\n")); 2108 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2109 } else { 2110 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2111 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2112 bssid, IEEE80211_ADDR_LEN); 2113 } 2114 } 2115 2116 static int 2117 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2118 { 2119 if (ssidlen == 0) { 2120 /* 2121 * A bug in the firmware breaks the ``don't associate'' 2122 * bit in the scan options command. To compensate for 2123 * this install a bogus ssid when no ssid is specified 2124 * so the firmware won't try to associate. 2125 */ 2126 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2127 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2128 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2129 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2130 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2131 "\x3c\x3d", IEEE80211_NWID_LEN); 2132 } else { 2133 #ifdef IPW_DEBUG 2134 if (ipw_debug > 0) { 2135 printf("Setting ESSID to "); 2136 ieee80211_print_essid(ssid, ssidlen); 2137 printf("\n"); 2138 } 2139 #endif 2140 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2141 } 2142 } 2143 2144 static int 2145 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2146 { 2147 struct ipw_scan_options opts; 2148 2149 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2150 opts.channels = htole32(chanmask); 2151 opts.flags = htole32(flags); 2152 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2153 } 2154 2155 static int 2156 ipw_scan(struct ipw_softc *sc) 2157 { 2158 uint32_t params; 2159 int error; 2160 2161 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2162 2163 if (sc->flags & IPW_FLAG_SCANNING) 2164 return (EBUSY); 2165 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2166 2167 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2168 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2169 if (error != 0) 2170 goto done; 2171 2172 /* 2173 * Setup null/bogus ssid so firmware doesn't use any previous 2174 * ssid to try and associate. This is because the ``don't 2175 * associate'' option bit is broken (sigh). 2176 */ 2177 error = ipw_setssid(sc, NULL, 0); 2178 if (error != 0) 2179 goto done; 2180 2181 /* 2182 * NB: the adapter may be disabled on association lost; 2183 * if so just re-enable it to kick off scanning. 2184 */ 2185 DPRINTF(("Starting scan\n")); 2186 sc->sc_scan_timer = 3; 2187 if (sc->flags & IPW_FLAG_ENABLED) { 2188 params = 0; /* XXX? */ 2189 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2190 ¶ms, sizeof(params)); 2191 } else 2192 error = ipw_enable(sc); 2193 done: 2194 if (error != 0) { 2195 DPRINTF(("Scan failed\n")); 2196 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2197 } 2198 return (error); 2199 } 2200 2201 static int 2202 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2203 { 2204 struct ifnet *ifp = sc->sc_ifp; 2205 struct ieee80211com *ic = ifp->if_l2com; 2206 uint32_t data; 2207 int error; 2208 2209 data = htole32(ieee80211_chan2ieee(ic, chan)); 2210 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2211 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2212 if (error == 0) 2213 ipw_setcurchan(sc, chan); 2214 return error; 2215 } 2216 2217 static void 2218 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2219 { 2220 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2221 struct ipw_softc *sc = ifp->if_softc; 2222 struct ieee80211_node *ni = vap->iv_bss; 2223 struct ipw_security security; 2224 uint32_t data; 2225 int error; 2226 2227 IPW_LOCK(sc); 2228 error = ipw_disable(sc); 2229 if (error != 0) 2230 goto done; 2231 2232 memset(&security, 0, sizeof security); 2233 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2234 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2235 security.ciphers = htole32(IPW_CIPHER_NONE); 2236 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2237 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2238 sizeof security); 2239 if (error != 0) 2240 goto done; 2241 2242 data = htole32(vap->iv_rtsthreshold); 2243 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2244 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2245 if (error != 0) 2246 goto done; 2247 2248 data = htole32(vap->iv_fragthreshold); 2249 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2250 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2251 if (error != 0) 2252 goto done; 2253 2254 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2255 error = ipw_setwepkeys(sc); 2256 if (error != 0) 2257 goto done; 2258 2259 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2260 data = htole32(vap->iv_def_txkey); 2261 DPRINTF(("Setting wep tx key index to %u\n", 2262 le32toh(data))); 2263 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2264 sizeof data); 2265 if (error != 0) 2266 goto done; 2267 } 2268 } 2269 2270 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2271 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2272 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2273 if (error != 0) 2274 goto done; 2275 2276 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2277 if (error != 0) 2278 goto done; 2279 2280 error = ipw_setbssid(sc, ni->ni_bssid); 2281 if (error != 0) 2282 goto done; 2283 2284 if (vap->iv_appie_wpa != NULL) { 2285 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2286 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2287 if (error != 0) 2288 goto done; 2289 } 2290 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2291 error = ipw_setchannel(sc, ni->ni_chan); 2292 if (error != 0) 2293 goto done; 2294 } 2295 2296 /* lock scan to ap's channel and enable associate */ 2297 error = ipw_setscanopts(sc, 2298 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2299 if (error != 0) 2300 goto done; 2301 2302 error = ipw_enable(sc); /* finally, enable adapter */ 2303 if (error == 0) 2304 sc->flags |= IPW_FLAG_ASSOCIATING; 2305 done: 2306 IPW_UNLOCK(sc); 2307 } 2308 2309 static void 2310 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2311 { 2312 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2313 struct ieee80211_node *ni = vap->iv_bss; 2314 struct ipw_softc *sc = ifp->if_softc; 2315 2316 IPW_LOCK(sc); 2317 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2318 /* 2319 * NB: don't try to do this if ipw_stop_master has 2320 * shutdown the firmware and disabled interrupts. 2321 */ 2322 if (sc->flags & IPW_FLAG_FW_INITED) { 2323 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2324 /* 2325 * NB: firmware currently ignores bssid parameter, but 2326 * supply it in case this changes (follow linux driver). 2327 */ 2328 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2329 ni->ni_bssid, IEEE80211_ADDR_LEN); 2330 } 2331 IPW_UNLOCK(sc); 2332 } 2333 2334 /* 2335 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2336 * It is called on firmware panics or on watchdog timeouts. 2337 */ 2338 static void 2339 ipw_init_task(void *context, int pending) 2340 { 2341 ipw_init(context); 2342 } 2343 2344 static void 2345 ipw_init(void *priv) 2346 { 2347 struct ipw_softc *sc = priv; 2348 struct ifnet *ifp = sc->sc_ifp; 2349 struct ieee80211com *ic = ifp->if_l2com; 2350 2351 IPW_LOCK(sc); 2352 ipw_init_locked(sc); 2353 IPW_UNLOCK(sc); 2354 2355 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2356 ieee80211_start_all(ic); /* start all vap's */ 2357 } 2358 2359 static void 2360 ipw_init_locked(struct ipw_softc *sc) 2361 { 2362 struct ifnet *ifp = sc->sc_ifp; 2363 struct ieee80211com *ic = ifp->if_l2com; 2364 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2365 const struct firmware *fp; 2366 const struct ipw_firmware_hdr *hdr; 2367 const char *fw; 2368 2369 IPW_LOCK_ASSERT(sc); 2370 2371 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2372 ieee80211_state_name[vap->iv_state], sc->flags)); 2373 2374 /* 2375 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2376 * when loading the firmware and we don't want to be called during this 2377 * operation. 2378 */ 2379 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2380 return; 2381 sc->flags |= IPW_FLAG_INIT_LOCKED; 2382 2383 ipw_stop_locked(sc); 2384 2385 if (ipw_reset(sc) != 0) { 2386 device_printf(sc->sc_dev, "could not reset adapter\n"); 2387 goto fail; 2388 } 2389 2390 if (sc->sc_firmware == NULL) { 2391 device_printf(sc->sc_dev, "no firmware\n"); 2392 goto fail; 2393 } 2394 /* NB: consistency already checked on load */ 2395 fp = sc->sc_firmware; 2396 hdr = (const struct ipw_firmware_hdr *)fp->data; 2397 2398 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2399 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2400 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2401 device_printf(sc->sc_dev, "could not load microcode\n"); 2402 goto fail; 2403 } 2404 2405 ipw_stop_master(sc); 2406 2407 /* 2408 * Setup tx, rx and status rings. 2409 */ 2410 sc->txold = IPW_NTBD - 1; 2411 sc->txcur = 0; 2412 sc->txfree = IPW_NTBD - 2; 2413 sc->rxcur = IPW_NRBD - 1; 2414 2415 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2416 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2417 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2418 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2419 2420 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2421 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2422 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2423 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2424 2425 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2426 2427 fw = (const char *)fp->data + sizeof *hdr; 2428 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2429 device_printf(sc->sc_dev, "could not load firmware\n"); 2430 goto fail; 2431 } 2432 2433 sc->flags |= IPW_FLAG_FW_INITED; 2434 2435 /* retrieve information tables base addresses */ 2436 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2437 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2438 2439 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2440 2441 if (ipw_config(sc) != 0) { 2442 device_printf(sc->sc_dev, "device configuration failed\n"); 2443 goto fail; 2444 } 2445 2446 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2447 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2448 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2449 2450 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2451 return; 2452 2453 fail: 2454 ipw_stop_locked(sc); 2455 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2456 } 2457 2458 static int 2459 ipw_config(struct ipw_softc *sc) 2460 { 2461 struct ifnet *ifp = sc->sc_ifp; 2462 struct ieee80211com *ic = ifp->if_l2com; 2463 struct ipw_configuration config; 2464 uint32_t data; 2465 int error; 2466 2467 error = ipw_disable(sc); 2468 if (error != 0) 2469 return error; 2470 2471 switch (ic->ic_opmode) { 2472 case IEEE80211_M_STA: 2473 case IEEE80211_M_HOSTAP: 2474 case IEEE80211_M_WDS: /* XXX */ 2475 data = htole32(IPW_MODE_BSS); 2476 break; 2477 case IEEE80211_M_IBSS: 2478 case IEEE80211_M_AHDEMO: 2479 data = htole32(IPW_MODE_IBSS); 2480 break; 2481 case IEEE80211_M_MONITOR: 2482 data = htole32(IPW_MODE_MONITOR); 2483 break; 2484 default: 2485 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2486 return EINVAL; 2487 } 2488 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2489 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2490 if (error != 0) 2491 return error; 2492 2493 if (ic->ic_opmode == IEEE80211_M_IBSS || 2494 ic->ic_opmode == IEEE80211_M_MONITOR) { 2495 error = ipw_setchannel(sc, ic->ic_curchan); 2496 if (error != 0) 2497 return error; 2498 } 2499 2500 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2501 return ipw_enable(sc); 2502 2503 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2504 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2505 if (ic->ic_opmode == IEEE80211_M_IBSS) 2506 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2507 if (ifp->if_flags & IFF_PROMISC) 2508 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2509 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2510 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2511 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2512 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2513 if (error != 0) 2514 return error; 2515 2516 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2517 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2518 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2519 if (error != 0) 2520 return error; 2521 2522 /* Use the same rate set */ 2523 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2524 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2525 if (error != 0) 2526 return error; 2527 2528 /* Use the same rate set */ 2529 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2530 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2531 if (error != 0) 2532 return error; 2533 2534 data = htole32(IPW_POWER_MODE_CAM); 2535 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2536 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2537 if (error != 0) 2538 return error; 2539 2540 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2541 data = htole32(32); /* default value */ 2542 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2543 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2544 sizeof data); 2545 if (error != 0) 2546 return error; 2547 } 2548 2549 return 0; 2550 } 2551 2552 static void 2553 ipw_stop(void *priv) 2554 { 2555 struct ipw_softc *sc = priv; 2556 2557 IPW_LOCK(sc); 2558 ipw_stop_locked(sc); 2559 IPW_UNLOCK(sc); 2560 } 2561 2562 static void 2563 ipw_stop_locked(struct ipw_softc *sc) 2564 { 2565 struct ifnet *ifp = sc->sc_ifp; 2566 int i; 2567 2568 IPW_LOCK_ASSERT(sc); 2569 2570 callout_stop(&sc->sc_wdtimer); 2571 ipw_stop_master(sc); 2572 2573 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2574 2575 /* 2576 * Release tx buffers. 2577 */ 2578 for (i = 0; i < IPW_NTBD; i++) 2579 ipw_release_sbd(sc, &sc->stbd_list[i]); 2580 2581 sc->sc_tx_timer = 0; 2582 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2583 } 2584 2585 static int 2586 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2587 { 2588 struct ipw_softc *sc = arg1; 2589 uint32_t i, size, buf[256]; 2590 2591 memset(buf, 0, sizeof buf); 2592 2593 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2594 return SYSCTL_OUT(req, buf, sizeof buf); 2595 2596 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2597 2598 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2599 for (i = 1; i < size; i++) 2600 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2601 2602 return SYSCTL_OUT(req, buf, size); 2603 } 2604 2605 static int 2606 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2607 { 2608 struct ipw_softc *sc = arg1; 2609 int val; 2610 2611 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2612 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2613 2614 return SYSCTL_OUT(req, &val, sizeof val); 2615 } 2616 2617 static uint32_t 2618 ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2619 { 2620 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2621 } 2622 2623 static void 2624 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2625 { 2626 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2627 } 2628 2629 #if 0 2630 static int 2631 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2632 { 2633 uint32_t addr, info; 2634 uint16_t count, size; 2635 uint32_t total; 2636 2637 /* addr[4] + count[2] + size[2] */ 2638 addr = MEM_READ_4(sc, sc->table2_base + off); 2639 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2640 2641 count = info >> 16; 2642 size = info & 0xffff; 2643 total = count * size; 2644 2645 if (total > *len) { 2646 *len = total; 2647 return EINVAL; 2648 } 2649 2650 *len = total; 2651 ipw_read_mem_1(sc, addr, buf, total); 2652 2653 return 0; 2654 } 2655 2656 static void 2657 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2658 bus_size_t count) 2659 { 2660 for (; count > 0; offset++, datap++, count--) { 2661 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2662 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2663 } 2664 } 2665 #endif 2666 2667 static void 2668 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2669 bus_size_t count) 2670 { 2671 for (; count > 0; offset++, datap++, count--) { 2672 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2673 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2674 } 2675 } 2676 2677 static void 2678 ipw_scan_start(struct ieee80211com *ic) 2679 { 2680 struct ifnet *ifp = ic->ic_ifp; 2681 struct ipw_softc *sc = ifp->if_softc; 2682 2683 IPW_LOCK(sc); 2684 ipw_scan(sc); 2685 IPW_UNLOCK(sc); 2686 } 2687 2688 static void 2689 ipw_set_channel(struct ieee80211com *ic) 2690 { 2691 struct ifnet *ifp = ic->ic_ifp; 2692 struct ipw_softc *sc = ifp->if_softc; 2693 2694 IPW_LOCK(sc); 2695 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2696 ipw_disable(sc); 2697 ipw_setchannel(sc, ic->ic_curchan); 2698 ipw_enable(sc); 2699 } 2700 IPW_UNLOCK(sc); 2701 } 2702 2703 static void 2704 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2705 { 2706 /* NB: all channels are scanned at once */ 2707 } 2708 2709 static void 2710 ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2711 { 2712 /* NB: don't try to abort scan; wait for firmware to finish */ 2713 } 2714 2715 static void 2716 ipw_scan_end(struct ieee80211com *ic) 2717 { 2718 struct ifnet *ifp = ic->ic_ifp; 2719 struct ipw_softc *sc = ifp->if_softc; 2720 2721 IPW_LOCK(sc); 2722 sc->flags &= ~IPW_FLAG_SCANNING; 2723 IPW_UNLOCK(sc); 2724 } 2725