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 [IFNAMSIZ], int, enum ieee80211_opmode, int, 112 const uint8_t [IEEE80211_ADDR_LEN], 113 const uint8_t [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_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *); 122 static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *, 123 struct ipw_soft_bd *, struct ipw_soft_buf *); 124 static void ipw_rx_intr(struct ipw_softc *); 125 static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *); 126 static void ipw_tx_intr(struct ipw_softc *); 127 static void ipw_intr(void *); 128 static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int); 129 static const char * ipw_cmdname(int); 130 static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t); 131 static int ipw_tx_start(struct ifnet *, struct mbuf *, 132 struct ieee80211_node *); 133 static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *, 134 const struct ieee80211_bpf_params *); 135 static void ipw_start(struct ifnet *); 136 static void ipw_start_locked(struct ifnet *); 137 static void ipw_watchdog(void *); 138 static int ipw_ioctl(struct ifnet *, u_long, caddr_t); 139 static void ipw_stop_master(struct ipw_softc *); 140 static int ipw_enable(struct ipw_softc *); 141 static int ipw_disable(struct ipw_softc *); 142 static int ipw_reset(struct ipw_softc *); 143 static int ipw_load_ucode(struct ipw_softc *, const char *, int); 144 static int ipw_load_firmware(struct ipw_softc *, const char *, int); 145 static int ipw_config(struct ipw_softc *); 146 static void ipw_assoc(struct ieee80211com *, struct ieee80211vap *); 147 static void ipw_disassoc(struct ieee80211com *, struct ieee80211vap *); 148 static void ipw_init_task(void *, int); 149 static void ipw_init(void *); 150 static void ipw_init_locked(struct ipw_softc *); 151 static void ipw_stop(void *); 152 static void ipw_stop_locked(struct ipw_softc *); 153 static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS); 154 static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS); 155 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t); 156 static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t); 157 #if 0 158 static int ipw_read_table2(struct ipw_softc *, uint32_t, void *, 159 uint32_t *); 160 static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *, 161 bus_size_t); 162 #endif 163 static void ipw_write_mem_1(struct ipw_softc *, bus_size_t, 164 const uint8_t *, bus_size_t); 165 static int ipw_scan(struct ipw_softc *); 166 static void ipw_scan_start(struct ieee80211com *); 167 static void ipw_scan_end(struct ieee80211com *); 168 static void ipw_set_channel(struct ieee80211com *); 169 static void ipw_scan_curchan(struct ieee80211_scan_state *, 170 unsigned long maxdwell); 171 static void ipw_scan_mindwell(struct ieee80211_scan_state *); 172 173 static int ipw_probe(device_t); 174 static int ipw_attach(device_t); 175 static int ipw_detach(device_t); 176 static int ipw_shutdown(device_t); 177 static int ipw_suspend(device_t); 178 static int ipw_resume(device_t); 179 180 static device_method_t ipw_methods[] = { 181 /* Device interface */ 182 DEVMETHOD(device_probe, ipw_probe), 183 DEVMETHOD(device_attach, ipw_attach), 184 DEVMETHOD(device_detach, ipw_detach), 185 DEVMETHOD(device_shutdown, ipw_shutdown), 186 DEVMETHOD(device_suspend, ipw_suspend), 187 DEVMETHOD(device_resume, ipw_resume), 188 189 { 0, 0 } 190 }; 191 192 static driver_t ipw_driver = { 193 "ipw", 194 ipw_methods, 195 sizeof (struct ipw_softc) 196 }; 197 198 static devclass_t ipw_devclass; 199 200 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0); 201 202 MODULE_VERSION(ipw, 1); 203 204 static int 205 ipw_probe(device_t dev) 206 { 207 const struct ipw_ident *ident; 208 209 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 210 if (pci_get_vendor(dev) == ident->vendor && 211 pci_get_device(dev) == ident->device) { 212 device_set_desc(dev, ident->name); 213 return 0; 214 } 215 } 216 return ENXIO; 217 } 218 219 /* Base Address Register */ 220 #define IPW_PCI_BAR0 0x10 221 222 static int 223 ipw_attach(device_t dev) 224 { 225 struct ipw_softc *sc = device_get_softc(dev); 226 struct ifnet *ifp; 227 struct ieee80211com *ic; 228 struct ieee80211_channel *c; 229 uint16_t val; 230 int error, i; 231 uint8_t macaddr[IEEE80211_ADDR_LEN]; 232 233 sc->sc_dev = dev; 234 235 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 236 MTX_DEF | MTX_RECURSE); 237 238 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 239 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 240 241 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 242 device_printf(dev, "chip is in D%d power mode " 243 "-- setting to D0\n", pci_get_powerstate(dev)); 244 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 245 } 246 247 pci_write_config(dev, 0x41, 0, 1); 248 249 /* enable bus-mastering */ 250 pci_enable_busmaster(dev); 251 252 sc->mem_rid = IPW_PCI_BAR0; 253 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 254 RF_ACTIVE); 255 if (sc->mem == NULL) { 256 device_printf(dev, "could not allocate memory resource\n"); 257 goto fail; 258 } 259 260 sc->sc_st = rman_get_bustag(sc->mem); 261 sc->sc_sh = rman_get_bushandle(sc->mem); 262 263 sc->irq_rid = 0; 264 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 265 RF_ACTIVE | RF_SHAREABLE); 266 if (sc->irq == NULL) { 267 device_printf(dev, "could not allocate interrupt resource\n"); 268 goto fail1; 269 } 270 271 if (ipw_reset(sc) != 0) { 272 device_printf(dev, "could not reset adapter\n"); 273 goto fail2; 274 } 275 276 if (ipw_dma_alloc(sc) != 0) { 277 device_printf(dev, "could not allocate DMA resources\n"); 278 goto fail2; 279 } 280 281 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 282 if (ifp == NULL) { 283 device_printf(dev, "can not if_alloc()\n"); 284 goto fail3; 285 } 286 ic = ifp->if_l2com; 287 288 ifp->if_softc = sc; 289 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 290 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 291 ifp->if_init = ipw_init; 292 ifp->if_ioctl = ipw_ioctl; 293 ifp->if_start = ipw_start; 294 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 295 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 296 IFQ_SET_READY(&ifp->if_snd); 297 298 ic->ic_ifp = ifp; 299 ic->ic_opmode = IEEE80211_M_STA; 300 ic->ic_phytype = IEEE80211_T_DS; 301 302 /* set device capabilities */ 303 ic->ic_caps = 304 IEEE80211_C_STA /* station mode supported */ 305 | IEEE80211_C_IBSS /* IBSS mode supported */ 306 | IEEE80211_C_MONITOR /* monitor mode supported */ 307 | IEEE80211_C_PMGT /* power save supported */ 308 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 309 | IEEE80211_C_WPA /* 802.11i supported */ 310 ; 311 312 /* read MAC address from EEPROM */ 313 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 314 macaddr[0] = val >> 8; 315 macaddr[1] = val & 0xff; 316 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 317 macaddr[2] = val >> 8; 318 macaddr[3] = val & 0xff; 319 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 320 macaddr[4] = val >> 8; 321 macaddr[5] = val & 0xff; 322 323 /* set supported .11b channels (read from EEPROM) */ 324 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 325 val = 0x7ff; /* default to channels 1-11 */ 326 val <<= 1; 327 for (i = 1; i < 16; i++) { 328 if (val & (1 << i)) { 329 c = &ic->ic_channels[ic->ic_nchans++]; 330 c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 331 c->ic_flags = IEEE80211_CHAN_B; 332 c->ic_ieee = i; 333 } 334 } 335 336 /* check support for radio transmitter switch in EEPROM */ 337 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 338 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 339 340 ieee80211_ifattach(ic, macaddr); 341 ic->ic_scan_start = ipw_scan_start; 342 ic->ic_scan_end = ipw_scan_end; 343 ic->ic_set_channel = ipw_set_channel; 344 ic->ic_scan_curchan = ipw_scan_curchan; 345 ic->ic_scan_mindwell = ipw_scan_mindwell; 346 ic->ic_raw_xmit = ipw_raw_xmit; 347 348 ic->ic_vap_create = ipw_vap_create; 349 ic->ic_vap_delete = ipw_vap_delete; 350 351 ieee80211_radiotap_attach(ic, 352 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 353 IPW_TX_RADIOTAP_PRESENT, 354 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 355 IPW_RX_RADIOTAP_PRESENT); 356 357 /* 358 * Add a few sysctl knobs. 359 */ 360 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 361 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 362 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 363 "radio transmitter switch state (0=off, 1=on)"); 364 365 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 366 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 367 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 368 "statistics"); 369 370 /* 371 * Hook our interrupt after all initialization is complete. 372 */ 373 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 374 NULL, ipw_intr, sc, &sc->sc_ih); 375 if (error != 0) { 376 device_printf(dev, "could not set up interrupt\n"); 377 goto fail4; 378 } 379 380 if (bootverbose) 381 ieee80211_announce(ic); 382 383 return 0; 384 fail4: 385 if_free(ifp); 386 fail3: 387 ipw_release(sc); 388 fail2: 389 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 390 fail1: 391 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 392 fail: 393 mtx_destroy(&sc->sc_mtx); 394 return ENXIO; 395 } 396 397 static int 398 ipw_detach(device_t dev) 399 { 400 struct ipw_softc *sc = device_get_softc(dev); 401 struct ifnet *ifp = sc->sc_ifp; 402 struct ieee80211com *ic = ifp->if_l2com; 403 404 ieee80211_draintask(ic, &sc->sc_init_task); 405 ipw_stop(sc); 406 407 ieee80211_ifdetach(ic); 408 409 callout_drain(&sc->sc_wdtimer); 410 411 ipw_release(sc); 412 413 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 414 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 415 416 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 417 418 if_free(ifp); 419 420 if (sc->sc_firmware != NULL) { 421 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 422 sc->sc_firmware = NULL; 423 } 424 425 mtx_destroy(&sc->sc_mtx); 426 427 return 0; 428 } 429 430 static struct ieee80211vap * 431 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 432 enum ieee80211_opmode opmode, int flags, 433 const uint8_t bssid[IEEE80211_ADDR_LEN], 434 const uint8_t mac[IEEE80211_ADDR_LEN]) 435 { 436 struct ifnet *ifp = ic->ic_ifp; 437 struct ipw_softc *sc = ifp->if_softc; 438 struct ipw_vap *ivp; 439 struct ieee80211vap *vap; 440 const struct firmware *fp; 441 const struct ipw_firmware_hdr *hdr; 442 const char *imagename; 443 444 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 445 return NULL; 446 447 switch (opmode) { 448 case IEEE80211_M_STA: 449 imagename = "ipw_bss"; 450 break; 451 case IEEE80211_M_IBSS: 452 imagename = "ipw_ibss"; 453 break; 454 case IEEE80211_M_MONITOR: 455 imagename = "ipw_monitor"; 456 break; 457 default: 458 return NULL; 459 } 460 461 /* 462 * Load firmware image using the firmware(9) subsystem. Doing 463 * this unlocked is ok since we're single-threaded by the 464 * 802.11 layer. 465 */ 466 if (sc->sc_firmware == NULL || 467 strcmp(sc->sc_firmware->name, imagename) != 0) { 468 if (sc->sc_firmware != NULL) 469 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 470 sc->sc_firmware = firmware_get(imagename); 471 } 472 if (sc->sc_firmware == NULL) { 473 device_printf(sc->sc_dev, 474 "could not load firmware image '%s'\n", imagename); 475 return NULL; 476 } 477 fp = sc->sc_firmware; 478 if (fp->datasize < sizeof *hdr) { 479 device_printf(sc->sc_dev, 480 "firmware image too short %zu\n", fp->datasize); 481 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 482 sc->sc_firmware = NULL; 483 return NULL; 484 } 485 hdr = (const struct ipw_firmware_hdr *)fp->data; 486 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 487 le32toh(hdr->ucodesz)) { 488 device_printf(sc->sc_dev, 489 "firmware image too short %zu\n", fp->datasize); 490 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 491 sc->sc_firmware = NULL; 492 return NULL; 493 } 494 495 ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap), 496 M_80211_VAP, M_NOWAIT | M_ZERO); 497 if (ivp == NULL) 498 return NULL; 499 vap = &ivp->vap; 500 501 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 502 /* override with driver methods */ 503 ivp->newstate = vap->iv_newstate; 504 vap->iv_newstate = ipw_newstate; 505 506 /* complete setup */ 507 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status); 508 ic->ic_opmode = opmode; 509 return vap; 510 } 511 512 static void 513 ipw_vap_delete(struct ieee80211vap *vap) 514 { 515 struct ipw_vap *ivp = IPW_VAP(vap); 516 517 ieee80211_vap_detach(vap); 518 free(ivp, M_80211_VAP); 519 } 520 521 static int 522 ipw_dma_alloc(struct ipw_softc *sc) 523 { 524 struct ipw_soft_bd *sbd; 525 struct ipw_soft_hdr *shdr; 526 struct ipw_soft_buf *sbuf; 527 bus_addr_t physaddr; 528 int error, i; 529 530 /* 531 * Allocate parent DMA tag for subsequent allocations. 532 */ 533 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 534 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 535 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 536 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat); 537 if (error != 0) { 538 device_printf(sc->sc_dev, "could not create parent DMA tag\n"); 539 goto fail; 540 } 541 542 /* 543 * Allocate and map tx ring. 544 */ 545 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 546 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 547 NULL, &sc->tbd_dmat); 548 if (error != 0) { 549 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 550 goto fail; 551 } 552 553 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 554 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 555 if (error != 0) { 556 device_printf(sc->sc_dev, 557 "could not allocate tx ring DMA memory\n"); 558 goto fail; 559 } 560 561 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 562 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 563 if (error != 0) { 564 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 565 goto fail; 566 } 567 568 /* 569 * Allocate and map rx ring. 570 */ 571 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 572 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 573 NULL, &sc->rbd_dmat); 574 if (error != 0) { 575 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 576 goto fail; 577 } 578 579 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 580 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 581 if (error != 0) { 582 device_printf(sc->sc_dev, 583 "could not allocate rx ring DMA memory\n"); 584 goto fail; 585 } 586 587 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 588 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 589 if (error != 0) { 590 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 591 goto fail; 592 } 593 594 /* 595 * Allocate and map status ring. 596 */ 597 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 598 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 599 NULL, NULL, &sc->status_dmat); 600 if (error != 0) { 601 device_printf(sc->sc_dev, 602 "could not create status ring DMA tag\n"); 603 goto fail; 604 } 605 606 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 607 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 608 if (error != 0) { 609 device_printf(sc->sc_dev, 610 "could not allocate status ring DMA memory\n"); 611 goto fail; 612 } 613 614 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 615 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 616 0); 617 if (error != 0) { 618 device_printf(sc->sc_dev, 619 "could not map status ring DMA memory\n"); 620 goto fail; 621 } 622 623 /* 624 * Allocate command DMA map. 625 */ 626 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 627 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 628 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 629 if (error != 0) { 630 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 631 goto fail; 632 } 633 634 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 635 if (error != 0) { 636 device_printf(sc->sc_dev, 637 "could not create command DMA map\n"); 638 goto fail; 639 } 640 641 /* 642 * Allocate headers DMA maps. 643 */ 644 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 645 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 646 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 647 if (error != 0) { 648 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 649 goto fail; 650 } 651 652 SLIST_INIT(&sc->free_shdr); 653 for (i = 0; i < IPW_NDATA; i++) { 654 shdr = &sc->shdr_list[i]; 655 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 656 if (error != 0) { 657 device_printf(sc->sc_dev, 658 "could not create header DMA map\n"); 659 goto fail; 660 } 661 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 662 } 663 664 /* 665 * Allocate tx buffers DMA maps. 666 */ 667 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 668 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 669 NULL, NULL, &sc->txbuf_dmat); 670 if (error != 0) { 671 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 672 goto fail; 673 } 674 675 SLIST_INIT(&sc->free_sbuf); 676 for (i = 0; i < IPW_NDATA; i++) { 677 sbuf = &sc->tx_sbuf_list[i]; 678 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 679 if (error != 0) { 680 device_printf(sc->sc_dev, 681 "could not create tx DMA map\n"); 682 goto fail; 683 } 684 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 685 } 686 687 /* 688 * Initialize tx ring. 689 */ 690 for (i = 0; i < IPW_NTBD; i++) { 691 sbd = &sc->stbd_list[i]; 692 sbd->bd = &sc->tbd_list[i]; 693 sbd->type = IPW_SBD_TYPE_NOASSOC; 694 } 695 696 /* 697 * Pre-allocate rx buffers and DMA maps. 698 */ 699 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 700 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 701 NULL, &sc->rxbuf_dmat); 702 if (error != 0) { 703 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 704 goto fail; 705 } 706 707 for (i = 0; i < IPW_NRBD; i++) { 708 sbd = &sc->srbd_list[i]; 709 sbuf = &sc->rx_sbuf_list[i]; 710 sbd->bd = &sc->rbd_list[i]; 711 712 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 713 if (sbuf->m == NULL) { 714 device_printf(sc->sc_dev, 715 "could not allocate rx mbuf\n"); 716 error = ENOMEM; 717 goto fail; 718 } 719 720 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 721 if (error != 0) { 722 device_printf(sc->sc_dev, 723 "could not create rx DMA map\n"); 724 goto fail; 725 } 726 727 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 728 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 729 &physaddr, 0); 730 if (error != 0) { 731 device_printf(sc->sc_dev, 732 "could not map rx DMA memory\n"); 733 goto fail; 734 } 735 736 sbd->type = IPW_SBD_TYPE_DATA; 737 sbd->priv = sbuf; 738 sbd->bd->physaddr = htole32(physaddr); 739 sbd->bd->len = htole32(MCLBYTES); 740 } 741 742 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 743 744 return 0; 745 746 fail: ipw_release(sc); 747 return error; 748 } 749 750 static void 751 ipw_release(struct ipw_softc *sc) 752 { 753 struct ipw_soft_buf *sbuf; 754 int i; 755 756 if (sc->parent_dmat != NULL) { 757 bus_dma_tag_destroy(sc->parent_dmat); 758 } 759 760 if (sc->tbd_dmat != NULL) { 761 if (sc->stbd_list != NULL) { 762 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 763 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, 764 sc->tbd_map); 765 } 766 bus_dma_tag_destroy(sc->tbd_dmat); 767 } 768 769 if (sc->rbd_dmat != NULL) { 770 if (sc->rbd_list != NULL) { 771 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 772 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 773 sc->rbd_map); 774 } 775 bus_dma_tag_destroy(sc->rbd_dmat); 776 } 777 778 if (sc->status_dmat != NULL) { 779 if (sc->status_list != NULL) { 780 bus_dmamap_unload(sc->status_dmat, sc->status_map); 781 bus_dmamem_free(sc->status_dmat, sc->status_list, 782 sc->status_map); 783 } 784 bus_dma_tag_destroy(sc->status_dmat); 785 } 786 787 for (i = 0; i < IPW_NTBD; i++) 788 ipw_release_sbd(sc, &sc->stbd_list[i]); 789 790 if (sc->cmd_dmat != NULL) { 791 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 792 bus_dma_tag_destroy(sc->cmd_dmat); 793 } 794 795 if (sc->hdr_dmat != NULL) { 796 for (i = 0; i < IPW_NDATA; i++) 797 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 798 bus_dma_tag_destroy(sc->hdr_dmat); 799 } 800 801 if (sc->txbuf_dmat != NULL) { 802 for (i = 0; i < IPW_NDATA; i++) { 803 bus_dmamap_destroy(sc->txbuf_dmat, 804 sc->tx_sbuf_list[i].map); 805 } 806 bus_dma_tag_destroy(sc->txbuf_dmat); 807 } 808 809 if (sc->rxbuf_dmat != NULL) { 810 for (i = 0; i < IPW_NRBD; i++) { 811 sbuf = &sc->rx_sbuf_list[i]; 812 if (sbuf->m != NULL) { 813 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 814 BUS_DMASYNC_POSTREAD); 815 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 816 m_freem(sbuf->m); 817 } 818 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 819 } 820 bus_dma_tag_destroy(sc->rxbuf_dmat); 821 } 822 } 823 824 static int 825 ipw_shutdown(device_t dev) 826 { 827 struct ipw_softc *sc = device_get_softc(dev); 828 829 ipw_stop(sc); 830 831 return 0; 832 } 833 834 static int 835 ipw_suspend(device_t dev) 836 { 837 struct ipw_softc *sc = device_get_softc(dev); 838 839 ipw_stop(sc); 840 841 return 0; 842 } 843 844 static int 845 ipw_resume(device_t dev) 846 { 847 struct ipw_softc *sc = device_get_softc(dev); 848 struct ifnet *ifp = sc->sc_ifp; 849 850 pci_write_config(dev, 0x41, 0, 1); 851 852 if (ifp->if_flags & IFF_UP) 853 ipw_init(sc); 854 855 return 0; 856 } 857 858 static int 859 ipw_cvtrate(int ipwrate) 860 { 861 switch (ipwrate) { 862 case IPW_RATE_DS1: return 2; 863 case IPW_RATE_DS2: return 4; 864 case IPW_RATE_DS5: return 11; 865 case IPW_RATE_DS11: return 22; 866 } 867 return 0; 868 } 869 870 /* 871 * The firmware automatically adapts the transmit speed. We report its current 872 * value here. 873 */ 874 static void 875 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 876 { 877 struct ieee80211vap *vap = ifp->if_softc; 878 struct ieee80211com *ic = vap->iv_ic; 879 struct ipw_softc *sc = ic->ic_ifp->if_softc; 880 881 /* read current transmission rate from adapter */ 882 vap->iv_bss->ni_txrate = ipw_cvtrate( 883 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 884 ieee80211_media_status(ifp, imr); 885 } 886 887 static int 888 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 889 { 890 struct ipw_vap *ivp = IPW_VAP(vap); 891 struct ieee80211com *ic = vap->iv_ic; 892 struct ifnet *ifp = ic->ic_ifp; 893 struct ipw_softc *sc = ifp->if_softc; 894 enum ieee80211_state ostate; 895 896 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 897 ieee80211_state_name[vap->iv_state], 898 ieee80211_state_name[nstate], sc->flags)); 899 900 ostate = vap->iv_state; 901 IEEE80211_UNLOCK(ic); 902 903 switch (nstate) { 904 case IEEE80211_S_RUN: 905 if (ic->ic_opmode == IEEE80211_M_IBSS) { 906 /* 907 * XXX when joining an ibss network we are called 908 * with a SCAN -> RUN transition on scan complete. 909 * Use that to call ipw_assoc. On completing the 910 * join we are then called again with an AUTH -> RUN 911 * transition and we want to do nothing. This is 912 * all totally bogus and needs to be redone. 913 */ 914 if (ostate == IEEE80211_S_SCAN) 915 ipw_assoc(ic, vap); 916 } 917 break; 918 919 case IEEE80211_S_INIT: 920 if (sc->flags & IPW_FLAG_ASSOCIATED) 921 ipw_disassoc(ic, vap); 922 break; 923 924 case IEEE80211_S_AUTH: 925 /* 926 * Move to ASSOC state after the ipw_assoc() call. Firmware 927 * takes care of authentication, after the call we'll receive 928 * only an assoc response which would otherwise be discared 929 * if we are still in AUTH state. 930 */ 931 nstate = IEEE80211_S_ASSOC; 932 ipw_assoc(ic, vap); 933 break; 934 935 case IEEE80211_S_ASSOC: 936 /* 937 * If we are not transitioning from AUTH then resend the 938 * association request. 939 */ 940 if (ostate != IEEE80211_S_AUTH) 941 ipw_assoc(ic, vap); 942 break; 943 944 default: 945 break; 946 } 947 IEEE80211_LOCK(ic); 948 return ivp->newstate(vap, nstate, arg); 949 } 950 951 /* 952 * Read 16 bits at address 'addr' from the serial EEPROM. 953 */ 954 static uint16_t 955 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 956 { 957 uint32_t tmp; 958 uint16_t val; 959 int n; 960 961 /* clock C once before the first command */ 962 IPW_EEPROM_CTL(sc, 0); 963 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 964 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 965 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 966 967 /* write start bit (1) */ 968 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 969 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 970 971 /* write READ opcode (10) */ 972 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 973 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 974 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 975 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 976 977 /* write address A7-A0 */ 978 for (n = 7; n >= 0; n--) { 979 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 980 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 981 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 982 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 983 } 984 985 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 986 987 /* read data Q15-Q0 */ 988 val = 0; 989 for (n = 15; n >= 0; n--) { 990 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 991 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 992 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 993 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 994 } 995 996 IPW_EEPROM_CTL(sc, 0); 997 998 /* clear Chip Select and clock C */ 999 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 1000 IPW_EEPROM_CTL(sc, 0); 1001 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 1002 1003 return le16toh(val); 1004 } 1005 1006 static void 1007 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1008 { 1009 struct ipw_cmd *cmd; 1010 1011 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1012 1013 cmd = mtod(sbuf->m, struct ipw_cmd *); 1014 1015 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 1016 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 1017 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 1018 le32toh(cmd->status))); 1019 1020 sc->flags &= ~IPW_FLAG_BUSY; 1021 wakeup(sc); 1022 } 1023 1024 static void 1025 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1026 { 1027 #define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1028 struct ifnet *ifp = sc->sc_ifp; 1029 struct ieee80211com *ic = ifp->if_l2com; 1030 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1031 uint32_t state; 1032 1033 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1034 1035 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1036 1037 switch (state) { 1038 case IPW_STATE_ASSOCIATED: 1039 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1040 IEEESTATE(vap), sc->flags)); 1041 /* XXX suppress state change in case the fw auto-associates */ 1042 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1043 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1044 IEEESTATE(vap), sc->flags)); 1045 break; 1046 } 1047 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1048 sc->flags |= IPW_FLAG_ASSOCIATED; 1049 break; 1050 1051 case IPW_STATE_SCANNING: 1052 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1053 IEEESTATE(vap), sc->flags)); 1054 /* 1055 * NB: Check driver state for association on assoc 1056 * loss as the firmware will immediately start to 1057 * scan and we would treat it as a beacon miss if 1058 * we checked the 802.11 layer state. 1059 */ 1060 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1061 IPW_UNLOCK(sc); 1062 /* XXX probably need to issue disassoc to fw */ 1063 ieee80211_beacon_miss(ic); 1064 IPW_LOCK(sc); 1065 } 1066 break; 1067 1068 case IPW_STATE_SCAN_COMPLETE: 1069 /* 1070 * XXX For some reason scan requests generate scan 1071 * started + scan done events before any traffic is 1072 * received (e.g. probe response frames). We work 1073 * around this by marking the HACK flag and skipping 1074 * the first scan complete event. 1075 */ 1076 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1077 IEEESTATE(vap), sc->flags)); 1078 if (sc->flags & IPW_FLAG_HACK) { 1079 sc->flags &= ~IPW_FLAG_HACK; 1080 break; 1081 } 1082 if (sc->flags & IPW_FLAG_SCANNING) { 1083 IPW_UNLOCK(sc); 1084 ieee80211_scan_done(vap); 1085 IPW_LOCK(sc); 1086 sc->flags &= ~IPW_FLAG_SCANNING; 1087 sc->sc_scan_timer = 0; 1088 } 1089 break; 1090 1091 case IPW_STATE_ASSOCIATION_LOST: 1092 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1093 IEEESTATE(vap), sc->flags)); 1094 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1095 if (vap->iv_state == IEEE80211_S_RUN) { 1096 IPW_UNLOCK(sc); 1097 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1098 IPW_LOCK(sc); 1099 } 1100 break; 1101 1102 case IPW_STATE_DISABLED: 1103 /* XXX? is this right? */ 1104 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1105 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1106 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1107 IEEESTATE(vap), sc->flags)); 1108 break; 1109 1110 case IPW_STATE_RADIO_DISABLED: 1111 device_printf(sc->sc_dev, "radio turned off\n"); 1112 ieee80211_notify_radio(ic, 0); 1113 ipw_stop_locked(sc); 1114 /* XXX start polling thread to detect radio on */ 1115 break; 1116 1117 default: 1118 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1119 __func__, state, IEEESTATE(vap), sc->flags)); 1120 break; 1121 } 1122 #undef IEEESTATE 1123 } 1124 1125 /* 1126 * Set driver state for current channel. 1127 */ 1128 static void 1129 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1130 { 1131 struct ifnet *ifp = sc->sc_ifp; 1132 struct ieee80211com *ic = ifp->if_l2com; 1133 1134 ic->ic_curchan = chan; 1135 ieee80211_radiotap_chan_change(ic); 1136 } 1137 1138 /* 1139 * XXX: Hack to set the current channel to the value advertised in beacons or 1140 * probe responses. Only used during AP detection. 1141 */ 1142 static void 1143 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1144 { 1145 struct ifnet *ifp = sc->sc_ifp; 1146 struct ieee80211com *ic = ifp->if_l2com; 1147 struct ieee80211_channel *c; 1148 struct ieee80211_frame *wh; 1149 uint8_t subtype; 1150 uint8_t *frm, *efrm; 1151 1152 wh = mtod(m, struct ieee80211_frame *); 1153 1154 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1155 return; 1156 1157 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1158 1159 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1160 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1161 return; 1162 1163 /* XXX use ieee80211_parse_beacon */ 1164 frm = (uint8_t *)(wh + 1); 1165 efrm = mtod(m, uint8_t *) + m->m_len; 1166 1167 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1168 while (frm < efrm) { 1169 if (*frm == IEEE80211_ELEMID_DSPARMS) 1170 #if IEEE80211_CHAN_MAX < 255 1171 if (frm[2] <= IEEE80211_CHAN_MAX) 1172 #endif 1173 { 1174 DPRINTF(("Fixing channel to %d\n", frm[2])); 1175 c = ieee80211_find_channel(ic, 1176 ieee80211_ieee2mhz(frm[2], 0), 1177 IEEE80211_CHAN_B); 1178 if (c == NULL) 1179 c = &ic->ic_channels[0]; 1180 ipw_setcurchan(sc, c); 1181 } 1182 1183 frm += frm[1] + 2; 1184 } 1185 } 1186 1187 static void 1188 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1189 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1190 { 1191 struct ifnet *ifp = sc->sc_ifp; 1192 struct ieee80211com *ic = ifp->if_l2com; 1193 struct mbuf *mnew, *m; 1194 struct ieee80211_node *ni; 1195 bus_addr_t physaddr; 1196 int error; 1197 int8_t rssi, nf; 1198 1199 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1200 status->rssi)); 1201 1202 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1203 le32toh(status->len) > MCLBYTES) 1204 return; 1205 1206 /* 1207 * Try to allocate a new mbuf for this ring element and load it before 1208 * processing the current mbuf. If the ring element cannot be loaded, 1209 * drop the received packet and reuse the old mbuf. In the unlikely 1210 * case that the old mbuf can't be reloaded either, explicitly panic. 1211 */ 1212 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1213 if (mnew == NULL) { 1214 ifp->if_ierrors++; 1215 return; 1216 } 1217 1218 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1219 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1220 1221 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1222 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1223 if (error != 0) { 1224 m_freem(mnew); 1225 1226 /* try to reload the old mbuf */ 1227 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1228 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1229 &physaddr, 0); 1230 if (error != 0) { 1231 /* very unlikely that it will fail... */ 1232 panic("%s: could not load old rx mbuf", 1233 device_get_name(sc->sc_dev)); 1234 } 1235 ifp->if_ierrors++; 1236 return; 1237 } 1238 1239 /* 1240 * New mbuf successfully loaded, update Rx ring and continue 1241 * processing. 1242 */ 1243 m = sbuf->m; 1244 sbuf->m = mnew; 1245 sbd->bd->physaddr = htole32(physaddr); 1246 1247 /* finalize mbuf */ 1248 m->m_pkthdr.rcvif = ifp; 1249 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1250 1251 rssi = status->rssi + IPW_RSSI_TO_DBM; 1252 nf = -95; 1253 if (ieee80211_radiotap_active(ic)) { 1254 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1255 1256 tap->wr_flags = 0; 1257 tap->wr_antsignal = rssi; 1258 tap->wr_antnoise = nf; 1259 } 1260 1261 if (sc->flags & IPW_FLAG_SCANNING) 1262 ipw_fix_channel(sc, m); 1263 1264 IPW_UNLOCK(sc); 1265 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1266 if (ni != NULL) { 1267 (void) ieee80211_input(ni, m, rssi - nf, nf); 1268 ieee80211_free_node(ni); 1269 } else 1270 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1271 IPW_LOCK(sc); 1272 1273 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1274 } 1275 1276 static void 1277 ipw_rx_intr(struct ipw_softc *sc) 1278 { 1279 struct ipw_status *status; 1280 struct ipw_soft_bd *sbd; 1281 struct ipw_soft_buf *sbuf; 1282 uint32_t r, i; 1283 1284 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1285 return; 1286 1287 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1288 1289 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1290 1291 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1292 status = &sc->status_list[i]; 1293 sbd = &sc->srbd_list[i]; 1294 sbuf = sbd->priv; 1295 1296 switch (le16toh(status->code) & 0xf) { 1297 case IPW_STATUS_CODE_COMMAND: 1298 ipw_rx_cmd_intr(sc, sbuf); 1299 break; 1300 1301 case IPW_STATUS_CODE_NEWSTATE: 1302 ipw_rx_newstate_intr(sc, sbuf); 1303 break; 1304 1305 case IPW_STATUS_CODE_DATA_802_3: 1306 case IPW_STATUS_CODE_DATA_802_11: 1307 ipw_rx_data_intr(sc, status, sbd, sbuf); 1308 break; 1309 1310 case IPW_STATUS_CODE_NOTIFICATION: 1311 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1312 le32toh(status->len), status->flags)); 1313 /* XXX maybe drive state machine AUTH->ASSOC? */ 1314 break; 1315 1316 default: 1317 device_printf(sc->sc_dev, "unexpected status code %u\n", 1318 le16toh(status->code)); 1319 } 1320 1321 /* firmware was killed, stop processing received frames */ 1322 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1323 return; 1324 1325 sbd->bd->flags = 0; 1326 } 1327 1328 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1329 1330 /* kick the firmware */ 1331 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1332 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1333 } 1334 1335 static void 1336 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1337 { 1338 struct ipw_soft_hdr *shdr; 1339 struct ipw_soft_buf *sbuf; 1340 1341 switch (sbd->type) { 1342 case IPW_SBD_TYPE_COMMAND: 1343 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1344 BUS_DMASYNC_POSTWRITE); 1345 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1346 break; 1347 1348 case IPW_SBD_TYPE_HEADER: 1349 shdr = sbd->priv; 1350 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1351 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1352 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1353 break; 1354 1355 case IPW_SBD_TYPE_DATA: 1356 sbuf = sbd->priv; 1357 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1358 BUS_DMASYNC_POSTWRITE); 1359 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1360 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1361 1362 if (sbuf->m->m_flags & M_TXCB) 1363 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1364 m_freem(sbuf->m); 1365 ieee80211_free_node(sbuf->ni); 1366 1367 sc->sc_tx_timer = 0; 1368 break; 1369 } 1370 1371 sbd->type = IPW_SBD_TYPE_NOASSOC; 1372 } 1373 1374 static void 1375 ipw_tx_intr(struct ipw_softc *sc) 1376 { 1377 struct ifnet *ifp = sc->sc_ifp; 1378 struct ipw_soft_bd *sbd; 1379 uint32_t r, i; 1380 1381 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1382 return; 1383 1384 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1385 1386 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1387 sbd = &sc->stbd_list[i]; 1388 1389 if (sbd->type == IPW_SBD_TYPE_DATA) 1390 ifp->if_opackets++; 1391 1392 ipw_release_sbd(sc, sbd); 1393 sc->txfree++; 1394 } 1395 1396 /* remember what the firmware has processed */ 1397 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1398 1399 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1400 ipw_start_locked(ifp); 1401 } 1402 1403 static void 1404 ipw_fatal_error_intr(struct ipw_softc *sc) 1405 { 1406 struct ifnet *ifp = sc->sc_ifp; 1407 struct ieee80211com *ic = ifp->if_l2com; 1408 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1409 1410 device_printf(sc->sc_dev, "firmware error\n"); 1411 if (vap != NULL) { 1412 IPW_UNLOCK(sc); 1413 ieee80211_cancel_scan(vap); 1414 IPW_LOCK(sc); 1415 } 1416 ieee80211_runtask(ic, &sc->sc_init_task); 1417 } 1418 1419 static void 1420 ipw_intr(void *arg) 1421 { 1422 struct ipw_softc *sc = arg; 1423 uint32_t r; 1424 1425 IPW_LOCK(sc); 1426 1427 r = CSR_READ_4(sc, IPW_CSR_INTR); 1428 if (r == 0 || r == 0xffffffff) 1429 goto done; 1430 1431 /* disable interrupts */ 1432 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1433 1434 /* acknowledge all interrupts */ 1435 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1436 1437 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1438 ipw_fatal_error_intr(sc); 1439 goto done; 1440 } 1441 1442 if (r & IPW_INTR_FW_INIT_DONE) 1443 wakeup(sc); 1444 1445 if (r & IPW_INTR_RX_TRANSFER) 1446 ipw_rx_intr(sc); 1447 1448 if (r & IPW_INTR_TX_TRANSFER) 1449 ipw_tx_intr(sc); 1450 1451 /* re-enable interrupts */ 1452 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1453 done: 1454 IPW_UNLOCK(sc); 1455 } 1456 1457 static void 1458 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1459 { 1460 if (error != 0) 1461 return; 1462 1463 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1464 1465 *(bus_addr_t *)arg = segs[0].ds_addr; 1466 } 1467 1468 static const char * 1469 ipw_cmdname(int cmd) 1470 { 1471 #define N(a) (sizeof(a) / sizeof(a[0])) 1472 static const struct { 1473 int cmd; 1474 const char *name; 1475 } cmds[] = { 1476 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1477 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1478 { IPW_CMD_DISABLE, "DISABLE" }, 1479 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1480 { IPW_CMD_ENABLE, "ENABLE" }, 1481 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1482 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1483 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1484 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1485 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1486 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1487 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1488 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1489 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1490 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1491 { IPW_CMD_SET_MODE, "SET_MODE" }, 1492 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1493 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1494 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1495 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1496 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1497 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1498 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1499 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1500 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1501 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1502 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1503 1504 }; 1505 static char buf[12]; 1506 int i; 1507 1508 for (i = 0; i < N(cmds); i++) 1509 if (cmds[i].cmd == cmd) 1510 return cmds[i].name; 1511 snprintf(buf, sizeof(buf), "%u", cmd); 1512 return buf; 1513 #undef N 1514 } 1515 1516 /* 1517 * Send a command to the firmware and wait for the acknowledgement. 1518 */ 1519 static int 1520 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1521 { 1522 struct ipw_soft_bd *sbd; 1523 bus_addr_t physaddr; 1524 int error; 1525 1526 IPW_LOCK_ASSERT(sc); 1527 1528 if (sc->flags & IPW_FLAG_BUSY) { 1529 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1530 __func__, ipw_cmdname(type)); 1531 return EAGAIN; 1532 } 1533 sc->flags |= IPW_FLAG_BUSY; 1534 1535 sbd = &sc->stbd_list[sc->txcur]; 1536 1537 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1538 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1539 if (error != 0) { 1540 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1541 sc->flags &= ~IPW_FLAG_BUSY; 1542 return error; 1543 } 1544 1545 sc->cmd.type = htole32(type); 1546 sc->cmd.subtype = 0; 1547 sc->cmd.len = htole32(len); 1548 sc->cmd.seq = 0; 1549 memcpy(sc->cmd.data, data, len); 1550 1551 sbd->type = IPW_SBD_TYPE_COMMAND; 1552 sbd->bd->physaddr = htole32(physaddr); 1553 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1554 sbd->bd->nfrag = 1; 1555 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1556 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1557 1558 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1559 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1560 1561 #ifdef IPW_DEBUG 1562 if (ipw_debug >= 4) { 1563 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1564 0, 0, len); 1565 /* Print the data buffer in the higher debug level */ 1566 if (ipw_debug >= 9 && len > 0) { 1567 printf(" data: 0x"); 1568 for (int i = 1; i <= len; i++) 1569 printf("%1D", (u_char *)data + len - i, ""); 1570 } 1571 printf("\n"); 1572 } 1573 #endif 1574 1575 /* kick firmware */ 1576 sc->txfree--; 1577 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1578 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1579 1580 /* wait at most one second for command to complete */ 1581 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1582 if (error != 0) { 1583 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1584 __func__, ipw_cmdname(type), error); 1585 sc->flags &= ~IPW_FLAG_BUSY; 1586 return (error); 1587 } 1588 return (0); 1589 } 1590 1591 static int 1592 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1593 { 1594 struct ipw_softc *sc = ifp->if_softc; 1595 struct ieee80211com *ic = ifp->if_l2com; 1596 struct ieee80211vap *vap = ni->ni_vap; 1597 struct ieee80211_frame *wh; 1598 struct ipw_soft_bd *sbd; 1599 struct ipw_soft_hdr *shdr; 1600 struct ipw_soft_buf *sbuf; 1601 struct ieee80211_key *k; 1602 struct mbuf *mnew; 1603 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1604 bus_addr_t physaddr; 1605 int nsegs, error, i; 1606 1607 wh = mtod(m0, struct ieee80211_frame *); 1608 1609 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1610 k = ieee80211_crypto_encap(ni, m0); 1611 if (k == NULL) { 1612 m_freem(m0); 1613 return ENOBUFS; 1614 } 1615 /* packet header may have moved, reset our local pointer */ 1616 wh = mtod(m0, struct ieee80211_frame *); 1617 } 1618 1619 if (ieee80211_radiotap_active_vap(vap)) { 1620 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1621 1622 tap->wt_flags = 0; 1623 1624 ieee80211_radiotap_tx(vap, m0); 1625 } 1626 1627 shdr = SLIST_FIRST(&sc->free_shdr); 1628 sbuf = SLIST_FIRST(&sc->free_sbuf); 1629 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1630 1631 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1632 shdr->hdr.subtype = 0; 1633 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0; 1634 shdr->hdr.encrypt = 0; 1635 shdr->hdr.keyidx = 0; 1636 shdr->hdr.keysz = 0; 1637 shdr->hdr.fragmentsz = 0; 1638 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1639 if (ic->ic_opmode == IEEE80211_M_STA) 1640 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1641 else 1642 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1643 1644 /* trim IEEE802.11 header */ 1645 m_adj(m0, sizeof (struct ieee80211_frame)); 1646 1647 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1648 &nsegs, 0); 1649 if (error != 0 && error != EFBIG) { 1650 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1651 error); 1652 m_freem(m0); 1653 return error; 1654 } 1655 if (error != 0) { 1656 mnew = m_defrag(m0, M_DONTWAIT); 1657 if (mnew == NULL) { 1658 device_printf(sc->sc_dev, 1659 "could not defragment mbuf\n"); 1660 m_freem(m0); 1661 return ENOBUFS; 1662 } 1663 m0 = mnew; 1664 1665 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1666 segs, &nsegs, 0); 1667 if (error != 0) { 1668 device_printf(sc->sc_dev, 1669 "could not map mbuf (error %d)\n", error); 1670 m_freem(m0); 1671 return error; 1672 } 1673 } 1674 1675 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1676 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1677 if (error != 0) { 1678 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1679 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1680 m_freem(m0); 1681 return error; 1682 } 1683 1684 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1685 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1686 1687 sbd = &sc->stbd_list[sc->txcur]; 1688 sbd->type = IPW_SBD_TYPE_HEADER; 1689 sbd->priv = shdr; 1690 sbd->bd->physaddr = htole32(physaddr); 1691 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1692 sbd->bd->nfrag = 1 + nsegs; 1693 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1694 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1695 1696 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1697 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1698 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1699 ":")); 1700 1701 sc->txfree--; 1702 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1703 1704 sbuf->m = m0; 1705 sbuf->ni = ni; 1706 1707 for (i = 0; i < nsegs; i++) { 1708 sbd = &sc->stbd_list[sc->txcur]; 1709 1710 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1711 sbd->bd->len = htole32(segs[i].ds_len); 1712 sbd->bd->nfrag = 0; 1713 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1714 if (i == nsegs - 1) { 1715 sbd->type = IPW_SBD_TYPE_DATA; 1716 sbd->priv = sbuf; 1717 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1718 } else { 1719 sbd->type = IPW_SBD_TYPE_NOASSOC; 1720 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1721 } 1722 1723 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1724 1725 sc->txfree--; 1726 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1727 } 1728 1729 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1730 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1731 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1732 1733 /* kick firmware */ 1734 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1735 1736 return 0; 1737 } 1738 1739 static int 1740 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1741 const struct ieee80211_bpf_params *params) 1742 { 1743 /* no support; just discard */ 1744 m_freem(m); 1745 ieee80211_free_node(ni); 1746 return 0; 1747 } 1748 1749 static void 1750 ipw_start(struct ifnet *ifp) 1751 { 1752 struct ipw_softc *sc = ifp->if_softc; 1753 1754 IPW_LOCK(sc); 1755 ipw_start_locked(ifp); 1756 IPW_UNLOCK(sc); 1757 } 1758 1759 static void 1760 ipw_start_locked(struct ifnet *ifp) 1761 { 1762 struct ipw_softc *sc = ifp->if_softc; 1763 struct ieee80211_node *ni; 1764 struct mbuf *m; 1765 1766 IPW_LOCK_ASSERT(sc); 1767 1768 for (;;) { 1769 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1770 if (m == NULL) 1771 break; 1772 if (sc->txfree < 1 + IPW_MAX_NSEG) { 1773 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1774 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1775 break; 1776 } 1777 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1778 if (ipw_tx_start(ifp, m, ni) != 0) { 1779 ieee80211_free_node(ni); 1780 ifp->if_oerrors++; 1781 break; 1782 } 1783 /* start watchdog timer */ 1784 sc->sc_tx_timer = 5; 1785 } 1786 } 1787 1788 static void 1789 ipw_watchdog(void *arg) 1790 { 1791 struct ipw_softc *sc = arg; 1792 struct ifnet *ifp = sc->sc_ifp; 1793 struct ieee80211com *ic = ifp->if_l2com; 1794 1795 IPW_LOCK_ASSERT(sc); 1796 1797 if (sc->sc_tx_timer > 0) { 1798 if (--sc->sc_tx_timer == 0) { 1799 if_printf(ifp, "device timeout\n"); 1800 ifp->if_oerrors++; 1801 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1802 } 1803 } 1804 if (sc->sc_scan_timer > 0) { 1805 if (--sc->sc_scan_timer == 0) { 1806 DPRINTFN(3, ("Scan timeout\n")); 1807 /* End the scan */ 1808 if (sc->flags & IPW_FLAG_SCANNING) { 1809 IPW_UNLOCK(sc); 1810 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1811 IPW_LOCK(sc); 1812 sc->flags &= ~IPW_FLAG_SCANNING; 1813 } 1814 } 1815 } 1816 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1817 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1818 } 1819 1820 static int 1821 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1822 { 1823 struct ipw_softc *sc = ifp->if_softc; 1824 struct ieee80211com *ic = ifp->if_l2com; 1825 struct ifreq *ifr = (struct ifreq *) data; 1826 int error = 0, startall = 0; 1827 1828 switch (cmd) { 1829 case SIOCSIFFLAGS: 1830 IPW_LOCK(sc); 1831 if (ifp->if_flags & IFF_UP) { 1832 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1833 ipw_init_locked(sc); 1834 startall = 1; 1835 } 1836 } else { 1837 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1838 ipw_stop_locked(sc); 1839 } 1840 IPW_UNLOCK(sc); 1841 if (startall) 1842 ieee80211_start_all(ic); 1843 break; 1844 case SIOCGIFMEDIA: 1845 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1846 break; 1847 case SIOCGIFADDR: 1848 error = ether_ioctl(ifp, cmd, data); 1849 break; 1850 default: 1851 error = EINVAL; 1852 break; 1853 } 1854 return error; 1855 } 1856 1857 static void 1858 ipw_stop_master(struct ipw_softc *sc) 1859 { 1860 uint32_t tmp; 1861 int ntries; 1862 1863 /* disable interrupts */ 1864 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1865 1866 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1867 for (ntries = 0; ntries < 50; ntries++) { 1868 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1869 break; 1870 DELAY(10); 1871 } 1872 if (ntries == 50) 1873 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1874 1875 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1876 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1877 1878 /* Clear all flags except the following */ 1879 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1880 } 1881 1882 static int 1883 ipw_reset(struct ipw_softc *sc) 1884 { 1885 uint32_t tmp; 1886 int ntries; 1887 1888 ipw_stop_master(sc); 1889 1890 /* move adapter to D0 state */ 1891 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1892 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1893 1894 /* wait for clock stabilization */ 1895 for (ntries = 0; ntries < 1000; ntries++) { 1896 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1897 break; 1898 DELAY(200); 1899 } 1900 if (ntries == 1000) 1901 return EIO; 1902 1903 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1904 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1905 1906 DELAY(10); 1907 1908 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1909 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1910 1911 return 0; 1912 } 1913 1914 static int 1915 ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1916 { 1917 int ms = hz < 1000 ? 1 : hz/10; 1918 int i, error; 1919 1920 for (i = 0; i < 100; i++) { 1921 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1922 return 0; 1923 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1924 if (error == 0 || error != EWOULDBLOCK) 1925 return 0; 1926 } 1927 DPRINTF(("%s: timeout waiting for %s\n", 1928 __func__, waitfor ? "disable" : "enable")); 1929 return ETIMEDOUT; 1930 } 1931 1932 static int 1933 ipw_enable(struct ipw_softc *sc) 1934 { 1935 int error; 1936 1937 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1938 DPRINTF(("Enable adapter\n")); 1939 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1940 if (error != 0) 1941 return error; 1942 error = ipw_waitfordisable(sc, 0); 1943 if (error != 0) 1944 return error; 1945 sc->flags |= IPW_FLAG_ENABLED; 1946 } 1947 return 0; 1948 } 1949 1950 static int 1951 ipw_disable(struct ipw_softc *sc) 1952 { 1953 int error; 1954 1955 if (sc->flags & IPW_FLAG_ENABLED) { 1956 DPRINTF(("Disable adapter\n")); 1957 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1958 if (error != 0) 1959 return error; 1960 error = ipw_waitfordisable(sc, 1); 1961 if (error != 0) 1962 return error; 1963 sc->flags &= ~IPW_FLAG_ENABLED; 1964 } 1965 return 0; 1966 } 1967 1968 /* 1969 * Upload the microcode to the device. 1970 */ 1971 static int 1972 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1973 { 1974 int ntries; 1975 1976 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1977 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1978 1979 MEM_WRITE_2(sc, 0x220000, 0x0703); 1980 MEM_WRITE_2(sc, 0x220000, 0x0707); 1981 1982 MEM_WRITE_1(sc, 0x210014, 0x72); 1983 MEM_WRITE_1(sc, 0x210014, 0x72); 1984 1985 MEM_WRITE_1(sc, 0x210000, 0x40); 1986 MEM_WRITE_1(sc, 0x210000, 0x00); 1987 MEM_WRITE_1(sc, 0x210000, 0x40); 1988 1989 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1990 1991 MEM_WRITE_1(sc, 0x210000, 0x00); 1992 MEM_WRITE_1(sc, 0x210000, 0x00); 1993 MEM_WRITE_1(sc, 0x210000, 0x80); 1994 1995 MEM_WRITE_2(sc, 0x220000, 0x0703); 1996 MEM_WRITE_2(sc, 0x220000, 0x0707); 1997 1998 MEM_WRITE_1(sc, 0x210014, 0x72); 1999 MEM_WRITE_1(sc, 0x210014, 0x72); 2000 2001 MEM_WRITE_1(sc, 0x210000, 0x00); 2002 MEM_WRITE_1(sc, 0x210000, 0x80); 2003 2004 for (ntries = 0; ntries < 10; ntries++) { 2005 if (MEM_READ_1(sc, 0x210000) & 1) 2006 break; 2007 DELAY(10); 2008 } 2009 if (ntries == 10) { 2010 device_printf(sc->sc_dev, 2011 "timeout waiting for ucode to initialize\n"); 2012 return EIO; 2013 } 2014 2015 MEM_WRITE_4(sc, 0x3000e0, 0); 2016 2017 return 0; 2018 } 2019 2020 /* set of macros to handle unaligned little endian data in firmware image */ 2021 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2022 #define GETLE16(p) ((p)[0] | (p)[1] << 8) 2023 static int 2024 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 2025 { 2026 const uint8_t *p, *end; 2027 uint32_t tmp, dst; 2028 uint16_t len; 2029 int error; 2030 2031 p = fw; 2032 end = fw + size; 2033 while (p < end) { 2034 dst = GETLE32(p); p += 4; 2035 len = GETLE16(p); p += 2; 2036 2037 ipw_write_mem_1(sc, dst, p, len); 2038 p += len; 2039 } 2040 2041 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 2042 IPW_IO_LED_OFF); 2043 2044 /* enable interrupts */ 2045 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 2046 2047 /* kick the firmware */ 2048 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 2049 2050 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 2051 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 2052 2053 /* wait at most one second for firmware initialization to complete */ 2054 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 2055 device_printf(sc->sc_dev, "timeout waiting for firmware " 2056 "initialization to complete\n"); 2057 return error; 2058 } 2059 2060 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2061 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2062 IPW_IO_GPIO3_MASK); 2063 2064 return 0; 2065 } 2066 2067 static int 2068 ipw_setwepkeys(struct ipw_softc *sc) 2069 { 2070 struct ifnet *ifp = sc->sc_ifp; 2071 struct ieee80211com *ic = ifp->if_l2com; 2072 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2073 struct ipw_wep_key wepkey; 2074 struct ieee80211_key *wk; 2075 int error, i; 2076 2077 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2078 wk = &vap->iv_nw_keys[i]; 2079 2080 if (wk->wk_cipher == NULL || 2081 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2082 continue; 2083 2084 wepkey.idx = i; 2085 wepkey.len = wk->wk_keylen; 2086 memset(wepkey.key, 0, sizeof wepkey.key); 2087 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2088 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2089 wepkey.len)); 2090 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2091 sizeof wepkey); 2092 if (error != 0) 2093 return error; 2094 } 2095 return 0; 2096 } 2097 2098 static int 2099 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2100 { 2101 struct ipw_wpa_ie wpaie; 2102 2103 memset(&wpaie, 0, sizeof(wpaie)); 2104 wpaie.len = htole32(ielen); 2105 /* XXX verify length */ 2106 memcpy(&wpaie.ie, ie, ielen); 2107 DPRINTF(("Setting WPA IE\n")); 2108 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2109 } 2110 2111 static int 2112 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2113 { 2114 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2115 2116 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2117 DPRINTF(("Setting mandatory BSSID to null\n")); 2118 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2119 } else { 2120 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2121 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2122 bssid, IEEE80211_ADDR_LEN); 2123 } 2124 } 2125 2126 static int 2127 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2128 { 2129 if (ssidlen == 0) { 2130 /* 2131 * A bug in the firmware breaks the ``don't associate'' 2132 * bit in the scan options command. To compensate for 2133 * this install a bogus ssid when no ssid is specified 2134 * so the firmware won't try to associate. 2135 */ 2136 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2137 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2138 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2139 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2140 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2141 "\x3c\x3d", IEEE80211_NWID_LEN); 2142 } else { 2143 #ifdef IPW_DEBUG 2144 if (ipw_debug > 0) { 2145 printf("Setting ESSID to "); 2146 ieee80211_print_essid(ssid, ssidlen); 2147 printf("\n"); 2148 } 2149 #endif 2150 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2151 } 2152 } 2153 2154 static int 2155 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2156 { 2157 struct ipw_scan_options opts; 2158 2159 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2160 opts.channels = htole32(chanmask); 2161 opts.flags = htole32(flags); 2162 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2163 } 2164 2165 static int 2166 ipw_scan(struct ipw_softc *sc) 2167 { 2168 uint32_t params; 2169 int error; 2170 2171 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2172 2173 if (sc->flags & IPW_FLAG_SCANNING) 2174 return (EBUSY); 2175 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2176 2177 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2178 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2179 if (error != 0) 2180 goto done; 2181 2182 /* 2183 * Setup null/bogus ssid so firmware doesn't use any previous 2184 * ssid to try and associate. This is because the ``don't 2185 * associate'' option bit is broken (sigh). 2186 */ 2187 error = ipw_setssid(sc, NULL, 0); 2188 if (error != 0) 2189 goto done; 2190 2191 /* 2192 * NB: the adapter may be disabled on association lost; 2193 * if so just re-enable it to kick off scanning. 2194 */ 2195 DPRINTF(("Starting scan\n")); 2196 sc->sc_scan_timer = 3; 2197 if (sc->flags & IPW_FLAG_ENABLED) { 2198 params = 0; /* XXX? */ 2199 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2200 ¶ms, sizeof(params)); 2201 } else 2202 error = ipw_enable(sc); 2203 done: 2204 if (error != 0) { 2205 DPRINTF(("Scan failed\n")); 2206 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2207 } 2208 return (error); 2209 } 2210 2211 static int 2212 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2213 { 2214 struct ifnet *ifp = sc->sc_ifp; 2215 struct ieee80211com *ic = ifp->if_l2com; 2216 uint32_t data; 2217 int error; 2218 2219 data = htole32(ieee80211_chan2ieee(ic, chan)); 2220 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2221 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2222 if (error == 0) 2223 ipw_setcurchan(sc, chan); 2224 return error; 2225 } 2226 2227 static void 2228 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2229 { 2230 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2231 struct ipw_softc *sc = ifp->if_softc; 2232 struct ieee80211_node *ni = vap->iv_bss; 2233 struct ipw_security security; 2234 uint32_t data; 2235 int error; 2236 2237 IPW_LOCK(sc); 2238 error = ipw_disable(sc); 2239 if (error != 0) 2240 goto done; 2241 2242 memset(&security, 0, sizeof security); 2243 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2244 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2245 security.ciphers = htole32(IPW_CIPHER_NONE); 2246 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2247 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2248 sizeof security); 2249 if (error != 0) 2250 goto done; 2251 2252 data = htole32(vap->iv_rtsthreshold); 2253 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2254 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2255 if (error != 0) 2256 goto done; 2257 2258 data = htole32(vap->iv_fragthreshold); 2259 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2260 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2261 if (error != 0) 2262 goto done; 2263 2264 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2265 error = ipw_setwepkeys(sc); 2266 if (error != 0) 2267 goto done; 2268 2269 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2270 data = htole32(vap->iv_def_txkey); 2271 DPRINTF(("Setting wep tx key index to %u\n", 2272 le32toh(data))); 2273 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2274 sizeof data); 2275 if (error != 0) 2276 goto done; 2277 } 2278 } 2279 2280 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2281 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2282 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2283 if (error != 0) 2284 goto done; 2285 2286 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2287 if (error != 0) 2288 goto done; 2289 2290 error = ipw_setbssid(sc, ni->ni_bssid); 2291 if (error != 0) 2292 goto done; 2293 2294 if (vap->iv_appie_wpa != NULL) { 2295 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2296 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2297 if (error != 0) 2298 goto done; 2299 } 2300 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2301 error = ipw_setchannel(sc, ni->ni_chan); 2302 if (error != 0) 2303 goto done; 2304 } 2305 2306 /* lock scan to ap's channel and enable associate */ 2307 error = ipw_setscanopts(sc, 2308 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2309 if (error != 0) 2310 goto done; 2311 2312 error = ipw_enable(sc); /* finally, enable adapter */ 2313 if (error == 0) 2314 sc->flags |= IPW_FLAG_ASSOCIATING; 2315 done: 2316 IPW_UNLOCK(sc); 2317 } 2318 2319 static void 2320 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2321 { 2322 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2323 struct ieee80211_node *ni = vap->iv_bss; 2324 struct ipw_softc *sc = ifp->if_softc; 2325 2326 IPW_LOCK(sc); 2327 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2328 /* 2329 * NB: don't try to do this if ipw_stop_master has 2330 * shutdown the firmware and disabled interrupts. 2331 */ 2332 if (sc->flags & IPW_FLAG_FW_INITED) { 2333 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2334 /* 2335 * NB: firmware currently ignores bssid parameter, but 2336 * supply it in case this changes (follow linux driver). 2337 */ 2338 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2339 ni->ni_bssid, IEEE80211_ADDR_LEN); 2340 } 2341 IPW_UNLOCK(sc); 2342 } 2343 2344 /* 2345 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2346 * It is called on firmware panics or on watchdog timeouts. 2347 */ 2348 static void 2349 ipw_init_task(void *context, int pending) 2350 { 2351 ipw_init(context); 2352 } 2353 2354 static void 2355 ipw_init(void *priv) 2356 { 2357 struct ipw_softc *sc = priv; 2358 struct ifnet *ifp = sc->sc_ifp; 2359 struct ieee80211com *ic = ifp->if_l2com; 2360 2361 IPW_LOCK(sc); 2362 ipw_init_locked(sc); 2363 IPW_UNLOCK(sc); 2364 2365 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2366 ieee80211_start_all(ic); /* start all vap's */ 2367 } 2368 2369 static void 2370 ipw_init_locked(struct ipw_softc *sc) 2371 { 2372 struct ifnet *ifp = sc->sc_ifp; 2373 struct ieee80211com *ic = ifp->if_l2com; 2374 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2375 const struct firmware *fp; 2376 const struct ipw_firmware_hdr *hdr; 2377 const char *fw; 2378 2379 IPW_LOCK_ASSERT(sc); 2380 2381 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2382 ieee80211_state_name[vap->iv_state], sc->flags)); 2383 2384 /* 2385 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2386 * when loading the firmware and we don't want to be called during this 2387 * operation. 2388 */ 2389 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2390 return; 2391 sc->flags |= IPW_FLAG_INIT_LOCKED; 2392 2393 ipw_stop_locked(sc); 2394 2395 if (ipw_reset(sc) != 0) { 2396 device_printf(sc->sc_dev, "could not reset adapter\n"); 2397 goto fail; 2398 } 2399 2400 if (sc->sc_firmware == NULL) { 2401 device_printf(sc->sc_dev, "no firmware\n"); 2402 goto fail; 2403 } 2404 /* NB: consistency already checked on load */ 2405 fp = sc->sc_firmware; 2406 hdr = (const struct ipw_firmware_hdr *)fp->data; 2407 2408 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2409 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2410 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2411 device_printf(sc->sc_dev, "could not load microcode\n"); 2412 goto fail; 2413 } 2414 2415 ipw_stop_master(sc); 2416 2417 /* 2418 * Setup tx, rx and status rings. 2419 */ 2420 sc->txold = IPW_NTBD - 1; 2421 sc->txcur = 0; 2422 sc->txfree = IPW_NTBD - 2; 2423 sc->rxcur = IPW_NRBD - 1; 2424 2425 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2426 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2427 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2428 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2429 2430 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2431 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2432 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2433 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2434 2435 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2436 2437 fw = (const char *)fp->data + sizeof *hdr; 2438 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2439 device_printf(sc->sc_dev, "could not load firmware\n"); 2440 goto fail; 2441 } 2442 2443 sc->flags |= IPW_FLAG_FW_INITED; 2444 2445 /* retrieve information tables base addresses */ 2446 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2447 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2448 2449 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2450 2451 if (ipw_config(sc) != 0) { 2452 device_printf(sc->sc_dev, "device configuration failed\n"); 2453 goto fail; 2454 } 2455 2456 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2457 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2458 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2459 2460 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2461 return; 2462 2463 fail: 2464 ipw_stop_locked(sc); 2465 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2466 } 2467 2468 static int 2469 ipw_config(struct ipw_softc *sc) 2470 { 2471 struct ifnet *ifp = sc->sc_ifp; 2472 struct ieee80211com *ic = ifp->if_l2com; 2473 struct ipw_configuration config; 2474 uint32_t data; 2475 int error; 2476 2477 error = ipw_disable(sc); 2478 if (error != 0) 2479 return error; 2480 2481 switch (ic->ic_opmode) { 2482 case IEEE80211_M_STA: 2483 case IEEE80211_M_HOSTAP: 2484 case IEEE80211_M_WDS: /* XXX */ 2485 data = htole32(IPW_MODE_BSS); 2486 break; 2487 case IEEE80211_M_IBSS: 2488 case IEEE80211_M_AHDEMO: 2489 data = htole32(IPW_MODE_IBSS); 2490 break; 2491 case IEEE80211_M_MONITOR: 2492 data = htole32(IPW_MODE_MONITOR); 2493 break; 2494 default: 2495 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2496 return EINVAL; 2497 } 2498 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2499 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2500 if (error != 0) 2501 return error; 2502 2503 if (ic->ic_opmode == IEEE80211_M_IBSS || 2504 ic->ic_opmode == IEEE80211_M_MONITOR) { 2505 error = ipw_setchannel(sc, ic->ic_curchan); 2506 if (error != 0) 2507 return error; 2508 } 2509 2510 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2511 return ipw_enable(sc); 2512 2513 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2514 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2515 if (ic->ic_opmode == IEEE80211_M_IBSS) 2516 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2517 if (ifp->if_flags & IFF_PROMISC) 2518 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2519 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2520 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2521 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2522 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2523 if (error != 0) 2524 return error; 2525 2526 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2527 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2528 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2529 if (error != 0) 2530 return error; 2531 2532 /* Use the same rate set */ 2533 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2534 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2535 if (error != 0) 2536 return error; 2537 2538 /* Use the same rate set */ 2539 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2540 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2541 if (error != 0) 2542 return error; 2543 2544 data = htole32(IPW_POWER_MODE_CAM); 2545 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2546 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2547 if (error != 0) 2548 return error; 2549 2550 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2551 data = htole32(32); /* default value */ 2552 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2553 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2554 sizeof data); 2555 if (error != 0) 2556 return error; 2557 } 2558 2559 return 0; 2560 } 2561 2562 static void 2563 ipw_stop(void *priv) 2564 { 2565 struct ipw_softc *sc = priv; 2566 2567 IPW_LOCK(sc); 2568 ipw_stop_locked(sc); 2569 IPW_UNLOCK(sc); 2570 } 2571 2572 static void 2573 ipw_stop_locked(struct ipw_softc *sc) 2574 { 2575 struct ifnet *ifp = sc->sc_ifp; 2576 int i; 2577 2578 IPW_LOCK_ASSERT(sc); 2579 2580 callout_stop(&sc->sc_wdtimer); 2581 ipw_stop_master(sc); 2582 2583 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2584 2585 /* 2586 * Release tx buffers. 2587 */ 2588 for (i = 0; i < IPW_NTBD; i++) 2589 ipw_release_sbd(sc, &sc->stbd_list[i]); 2590 2591 sc->sc_tx_timer = 0; 2592 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2593 } 2594 2595 static int 2596 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2597 { 2598 struct ipw_softc *sc = arg1; 2599 uint32_t i, size, buf[256]; 2600 2601 memset(buf, 0, sizeof buf); 2602 2603 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2604 return SYSCTL_OUT(req, buf, sizeof buf); 2605 2606 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2607 2608 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2609 for (i = 1; i < size; i++) 2610 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2611 2612 return SYSCTL_OUT(req, buf, size); 2613 } 2614 2615 static int 2616 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2617 { 2618 struct ipw_softc *sc = arg1; 2619 int val; 2620 2621 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2622 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2623 2624 return SYSCTL_OUT(req, &val, sizeof val); 2625 } 2626 2627 static uint32_t 2628 ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2629 { 2630 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2631 } 2632 2633 static void 2634 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2635 { 2636 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2637 } 2638 2639 #if 0 2640 static int 2641 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2642 { 2643 uint32_t addr, info; 2644 uint16_t count, size; 2645 uint32_t total; 2646 2647 /* addr[4] + count[2] + size[2] */ 2648 addr = MEM_READ_4(sc, sc->table2_base + off); 2649 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2650 2651 count = info >> 16; 2652 size = info & 0xffff; 2653 total = count * size; 2654 2655 if (total > *len) { 2656 *len = total; 2657 return EINVAL; 2658 } 2659 2660 *len = total; 2661 ipw_read_mem_1(sc, addr, buf, total); 2662 2663 return 0; 2664 } 2665 2666 static void 2667 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2668 bus_size_t count) 2669 { 2670 for (; count > 0; offset++, datap++, count--) { 2671 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2672 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2673 } 2674 } 2675 #endif 2676 2677 static void 2678 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2679 bus_size_t count) 2680 { 2681 for (; count > 0; offset++, datap++, count--) { 2682 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2683 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2684 } 2685 } 2686 2687 static void 2688 ipw_scan_start(struct ieee80211com *ic) 2689 { 2690 struct ifnet *ifp = ic->ic_ifp; 2691 struct ipw_softc *sc = ifp->if_softc; 2692 2693 IPW_LOCK(sc); 2694 ipw_scan(sc); 2695 IPW_UNLOCK(sc); 2696 } 2697 2698 static void 2699 ipw_set_channel(struct ieee80211com *ic) 2700 { 2701 struct ifnet *ifp = ic->ic_ifp; 2702 struct ipw_softc *sc = ifp->if_softc; 2703 2704 IPW_LOCK(sc); 2705 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2706 ipw_disable(sc); 2707 ipw_setchannel(sc, ic->ic_curchan); 2708 ipw_enable(sc); 2709 } 2710 IPW_UNLOCK(sc); 2711 } 2712 2713 static void 2714 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2715 { 2716 /* NB: all channels are scanned at once */ 2717 } 2718 2719 static void 2720 ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2721 { 2722 /* NB: don't try to abort scan; wait for firmware to finish */ 2723 } 2724 2725 static void 2726 ipw_scan_end(struct ieee80211com *ic) 2727 { 2728 struct ifnet *ifp = ic->ic_ifp; 2729 struct ipw_softc *sc = ifp->if_softc; 2730 2731 IPW_LOCK(sc); 2732 sc->flags &= ~IPW_FLAG_SCANNING; 2733 IPW_UNLOCK(sc); 2734 } 2735