1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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_var.h> 66 #include <net/if_arp.h> 67 #include <net/ethernet.h> 68 #include <net/if_dl.h> 69 #include <net/if_media.h> 70 #include <net/if_types.h> 71 72 #include <net80211/ieee80211_var.h> 73 #include <net80211/ieee80211_radiotap.h> 74 75 #include <netinet/in.h> 76 #include <netinet/in_systm.h> 77 #include <netinet/in_var.h> 78 #include <netinet/ip.h> 79 #include <netinet/if_ether.h> 80 81 #include <dev/ipw/if_ipwreg.h> 82 #include <dev/ipw/if_ipwvar.h> 83 84 #define IPW_DEBUG 85 #ifdef IPW_DEBUG 86 #define DPRINTF(x) do { if (ipw_debug > 0) printf x; } while (0) 87 #define DPRINTFN(n, x) do { if (ipw_debug >= (n)) printf x; } while (0) 88 int ipw_debug = 0; 89 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level"); 90 #else 91 #define DPRINTF(x) 92 #define DPRINTFN(n, x) 93 #endif 94 95 MODULE_DEPEND(ipw, pci, 1, 1, 1); 96 MODULE_DEPEND(ipw, wlan, 1, 1, 1); 97 MODULE_DEPEND(ipw, firmware, 1, 1, 1); 98 99 struct ipw_ident { 100 uint16_t vendor; 101 uint16_t device; 102 const char *name; 103 }; 104 105 static const struct ipw_ident ipw_ident_table[] = { 106 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" }, 107 108 { 0, 0, NULL } 109 }; 110 111 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *, 112 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 113 const uint8_t [IEEE80211_ADDR_LEN], 114 const uint8_t [IEEE80211_ADDR_LEN]); 115 static void ipw_vap_delete(struct ieee80211vap *); 116 static int ipw_dma_alloc(struct ipw_softc *); 117 static void ipw_release(struct ipw_softc *); 118 static void ipw_media_status(struct ifnet *, struct ifmediareq *); 119 static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int); 120 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t); 121 static uint16_t ipw_read_chanmask(struct ipw_softc *); 122 static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *); 123 static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *); 124 static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *, 125 struct ipw_soft_bd *, struct ipw_soft_buf *); 126 static void ipw_rx_intr(struct ipw_softc *); 127 static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *); 128 static void ipw_tx_intr(struct ipw_softc *); 129 static void ipw_intr(void *); 130 static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int); 131 static const char * ipw_cmdname(int); 132 static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t); 133 static int ipw_tx_start(struct ipw_softc *, struct mbuf *, 134 struct ieee80211_node *); 135 static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *, 136 const struct ieee80211_bpf_params *); 137 static int ipw_transmit(struct ieee80211com *, struct mbuf *); 138 static void ipw_start(struct ipw_softc *); 139 static void ipw_watchdog(void *); 140 static void ipw_parent(struct ieee80211com *); 141 static void ipw_stop_master(struct ipw_softc *); 142 static int ipw_enable(struct ipw_softc *); 143 static int ipw_disable(struct ipw_softc *); 144 static int ipw_reset(struct ipw_softc *); 145 static int ipw_load_ucode(struct ipw_softc *, const char *, int); 146 static int ipw_load_firmware(struct ipw_softc *, const char *, int); 147 static int ipw_config(struct ipw_softc *); 148 static void ipw_assoc(struct ieee80211com *, struct ieee80211vap *); 149 static void ipw_disassoc(struct ieee80211com *, struct ieee80211vap *); 150 static void ipw_init_task(void *, int); 151 static void ipw_init(void *); 152 static void ipw_init_locked(struct ipw_softc *); 153 static void ipw_stop(void *); 154 static void ipw_stop_locked(struct ipw_softc *); 155 static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS); 156 static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS); 157 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t); 158 static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t); 159 #if 0 160 static int ipw_read_table2(struct ipw_softc *, uint32_t, void *, 161 uint32_t *); 162 static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *, 163 bus_size_t); 164 #endif 165 static void ipw_write_mem_1(struct ipw_softc *, bus_size_t, 166 const uint8_t *, bus_size_t); 167 static int ipw_scan(struct ipw_softc *); 168 static void ipw_scan_start(struct ieee80211com *); 169 static void ipw_scan_end(struct ieee80211com *); 170 static void ipw_getradiocaps(struct ieee80211com *, int, int *, 171 struct ieee80211_channel[]); 172 static void ipw_set_channel(struct ieee80211com *); 173 static void ipw_scan_curchan(struct ieee80211_scan_state *, 174 unsigned long maxdwell); 175 static void ipw_scan_mindwell(struct ieee80211_scan_state *); 176 177 static int ipw_probe(device_t); 178 static int ipw_attach(device_t); 179 static int ipw_detach(device_t); 180 static int ipw_shutdown(device_t); 181 static int ipw_suspend(device_t); 182 static int ipw_resume(device_t); 183 184 static device_method_t ipw_methods[] = { 185 /* Device interface */ 186 DEVMETHOD(device_probe, ipw_probe), 187 DEVMETHOD(device_attach, ipw_attach), 188 DEVMETHOD(device_detach, ipw_detach), 189 DEVMETHOD(device_shutdown, ipw_shutdown), 190 DEVMETHOD(device_suspend, ipw_suspend), 191 DEVMETHOD(device_resume, ipw_resume), 192 193 DEVMETHOD_END 194 }; 195 196 static driver_t ipw_driver = { 197 "ipw", 198 ipw_methods, 199 sizeof (struct ipw_softc) 200 }; 201 202 static devclass_t ipw_devclass; 203 204 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL); 205 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, ipw, ipw_ident_table, 206 sizeof(ipw_ident_table[0]), nitems(ipw_ident_table) - 1); 207 208 MODULE_VERSION(ipw, 1); 209 210 static int 211 ipw_probe(device_t dev) 212 { 213 const struct ipw_ident *ident; 214 215 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 216 if (pci_get_vendor(dev) == ident->vendor && 217 pci_get_device(dev) == ident->device) { 218 device_set_desc(dev, ident->name); 219 return (BUS_PROBE_DEFAULT); 220 } 221 } 222 return ENXIO; 223 } 224 225 /* Base Address Register */ 226 static int 227 ipw_attach(device_t dev) 228 { 229 struct ipw_softc *sc = device_get_softc(dev); 230 struct ieee80211com *ic = &sc->sc_ic; 231 uint16_t val; 232 int error, i; 233 234 sc->sc_dev = dev; 235 236 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 237 MTX_DEF | MTX_RECURSE); 238 mbufq_init(&sc->sc_snd, ifqmaxlen); 239 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 240 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 241 242 pci_write_config(dev, 0x41, 0, 1); 243 244 /* enable bus-mastering */ 245 pci_enable_busmaster(dev); 246 247 i = PCIR_BAR(0); 248 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE); 249 if (sc->mem == NULL) { 250 device_printf(dev, "could not allocate memory resource\n"); 251 goto fail; 252 } 253 254 sc->sc_st = rman_get_bustag(sc->mem); 255 sc->sc_sh = rman_get_bushandle(sc->mem); 256 257 i = 0; 258 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i, 259 RF_ACTIVE | RF_SHAREABLE); 260 if (sc->irq == NULL) { 261 device_printf(dev, "could not allocate interrupt resource\n"); 262 goto fail1; 263 } 264 265 if (ipw_reset(sc) != 0) { 266 device_printf(dev, "could not reset adapter\n"); 267 goto fail2; 268 } 269 270 if (ipw_dma_alloc(sc) != 0) { 271 device_printf(dev, "could not allocate DMA resources\n"); 272 goto fail2; 273 } 274 275 ic->ic_softc = sc; 276 ic->ic_name = device_get_nameunit(dev); 277 ic->ic_opmode = IEEE80211_M_STA; 278 ic->ic_phytype = IEEE80211_T_DS; 279 280 /* set device capabilities */ 281 ic->ic_caps = 282 IEEE80211_C_STA /* station mode supported */ 283 | IEEE80211_C_IBSS /* IBSS mode supported */ 284 | IEEE80211_C_MONITOR /* monitor mode supported */ 285 | IEEE80211_C_PMGT /* power save supported */ 286 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 287 | IEEE80211_C_WPA /* 802.11i supported */ 288 ; 289 290 /* read MAC address from EEPROM */ 291 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 292 ic->ic_macaddr[0] = val >> 8; 293 ic->ic_macaddr[1] = val & 0xff; 294 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 295 ic->ic_macaddr[2] = val >> 8; 296 ic->ic_macaddr[3] = val & 0xff; 297 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 298 ic->ic_macaddr[4] = val >> 8; 299 ic->ic_macaddr[5] = val & 0xff; 300 301 sc->chanmask = ipw_read_chanmask(sc); 302 ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, 303 ic->ic_channels); 304 305 /* check support for radio transmitter switch in EEPROM */ 306 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 307 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 308 309 ieee80211_ifattach(ic); 310 ic->ic_scan_start = ipw_scan_start; 311 ic->ic_scan_end = ipw_scan_end; 312 ic->ic_getradiocaps = ipw_getradiocaps; 313 ic->ic_set_channel = ipw_set_channel; 314 ic->ic_scan_curchan = ipw_scan_curchan; 315 ic->ic_scan_mindwell = ipw_scan_mindwell; 316 ic->ic_raw_xmit = ipw_raw_xmit; 317 ic->ic_vap_create = ipw_vap_create; 318 ic->ic_vap_delete = ipw_vap_delete; 319 ic->ic_transmit = ipw_transmit; 320 ic->ic_parent = ipw_parent; 321 322 ieee80211_radiotap_attach(ic, 323 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 324 IPW_TX_RADIOTAP_PRESENT, 325 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 326 IPW_RX_RADIOTAP_PRESENT); 327 328 /* 329 * Add a few sysctl knobs. 330 */ 331 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 332 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 333 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 334 "radio transmitter switch state (0=off, 1=on)"); 335 336 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 337 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 338 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 339 "statistics"); 340 341 /* 342 * Hook our interrupt after all initialization is complete. 343 */ 344 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 345 NULL, ipw_intr, sc, &sc->sc_ih); 346 if (error != 0) { 347 device_printf(dev, "could not set up interrupt\n"); 348 goto fail3; 349 } 350 351 if (bootverbose) 352 ieee80211_announce(ic); 353 354 return 0; 355 fail3: 356 ipw_release(sc); 357 fail2: 358 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 359 fail1: 360 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 361 sc->mem); 362 fail: 363 mtx_destroy(&sc->sc_mtx); 364 return ENXIO; 365 } 366 367 static int 368 ipw_detach(device_t dev) 369 { 370 struct ipw_softc *sc = device_get_softc(dev); 371 struct ieee80211com *ic = &sc->sc_ic; 372 373 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 374 375 ieee80211_draintask(ic, &sc->sc_init_task); 376 ipw_stop(sc); 377 378 ieee80211_ifdetach(ic); 379 380 callout_drain(&sc->sc_wdtimer); 381 mbufq_drain(&sc->sc_snd); 382 383 ipw_release(sc); 384 385 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 386 387 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 388 sc->mem); 389 390 if (sc->sc_firmware != NULL) { 391 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 392 sc->sc_firmware = NULL; 393 } 394 395 mtx_destroy(&sc->sc_mtx); 396 397 return 0; 398 } 399 400 static struct ieee80211vap * 401 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 402 enum ieee80211_opmode opmode, int flags, 403 const uint8_t bssid[IEEE80211_ADDR_LEN], 404 const uint8_t mac[IEEE80211_ADDR_LEN]) 405 { 406 struct ipw_softc *sc = ic->ic_softc; 407 struct ipw_vap *ivp; 408 struct ieee80211vap *vap; 409 const struct firmware *fp; 410 const struct ipw_firmware_hdr *hdr; 411 const char *imagename; 412 413 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 414 return NULL; 415 416 switch (opmode) { 417 case IEEE80211_M_STA: 418 imagename = "ipw_bss"; 419 break; 420 case IEEE80211_M_IBSS: 421 imagename = "ipw_ibss"; 422 break; 423 case IEEE80211_M_MONITOR: 424 imagename = "ipw_monitor"; 425 break; 426 default: 427 return NULL; 428 } 429 430 /* 431 * Load firmware image using the firmware(9) subsystem. Doing 432 * this unlocked is ok since we're single-threaded by the 433 * 802.11 layer. 434 */ 435 if (sc->sc_firmware == NULL || 436 strcmp(sc->sc_firmware->name, imagename) != 0) { 437 if (sc->sc_firmware != NULL) 438 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 439 sc->sc_firmware = firmware_get(imagename); 440 } 441 if (sc->sc_firmware == NULL) { 442 device_printf(sc->sc_dev, 443 "could not load firmware image '%s'\n", imagename); 444 return NULL; 445 } 446 fp = sc->sc_firmware; 447 if (fp->datasize < sizeof *hdr) { 448 device_printf(sc->sc_dev, 449 "firmware image too short %zu\n", fp->datasize); 450 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 451 sc->sc_firmware = NULL; 452 return NULL; 453 } 454 hdr = (const struct ipw_firmware_hdr *)fp->data; 455 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 456 le32toh(hdr->ucodesz)) { 457 device_printf(sc->sc_dev, 458 "firmware image too short %zu\n", fp->datasize); 459 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 460 sc->sc_firmware = NULL; 461 return NULL; 462 } 463 464 ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO); 465 vap = &ivp->vap; 466 467 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 468 /* override with driver methods */ 469 ivp->newstate = vap->iv_newstate; 470 vap->iv_newstate = ipw_newstate; 471 472 /* complete setup */ 473 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status, 474 mac); 475 ic->ic_opmode = opmode; 476 return vap; 477 } 478 479 static void 480 ipw_vap_delete(struct ieee80211vap *vap) 481 { 482 struct ipw_vap *ivp = IPW_VAP(vap); 483 484 ieee80211_vap_detach(vap); 485 free(ivp, M_80211_VAP); 486 } 487 488 static int 489 ipw_dma_alloc(struct ipw_softc *sc) 490 { 491 struct ipw_soft_bd *sbd; 492 struct ipw_soft_hdr *shdr; 493 struct ipw_soft_buf *sbuf; 494 bus_addr_t physaddr; 495 int error, i; 496 497 /* 498 * Allocate parent DMA tag for subsequent allocations. 499 */ 500 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 501 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 502 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 503 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat); 504 if (error != 0) { 505 device_printf(sc->sc_dev, "could not create parent DMA tag\n"); 506 goto fail; 507 } 508 509 /* 510 * Allocate and map tx ring. 511 */ 512 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 513 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 514 NULL, &sc->tbd_dmat); 515 if (error != 0) { 516 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 517 goto fail; 518 } 519 520 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 521 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 522 if (error != 0) { 523 device_printf(sc->sc_dev, 524 "could not allocate tx ring DMA memory\n"); 525 goto fail; 526 } 527 528 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 529 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 530 if (error != 0) { 531 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 532 goto fail; 533 } 534 535 /* 536 * Allocate and map rx ring. 537 */ 538 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 539 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 540 NULL, &sc->rbd_dmat); 541 if (error != 0) { 542 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 543 goto fail; 544 } 545 546 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 547 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 548 if (error != 0) { 549 device_printf(sc->sc_dev, 550 "could not allocate rx ring DMA memory\n"); 551 goto fail; 552 } 553 554 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 555 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 556 if (error != 0) { 557 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 558 goto fail; 559 } 560 561 /* 562 * Allocate and map status ring. 563 */ 564 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 565 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 566 NULL, NULL, &sc->status_dmat); 567 if (error != 0) { 568 device_printf(sc->sc_dev, 569 "could not create status ring DMA tag\n"); 570 goto fail; 571 } 572 573 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 574 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 575 if (error != 0) { 576 device_printf(sc->sc_dev, 577 "could not allocate status ring DMA memory\n"); 578 goto fail; 579 } 580 581 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 582 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 583 0); 584 if (error != 0) { 585 device_printf(sc->sc_dev, 586 "could not map status ring DMA memory\n"); 587 goto fail; 588 } 589 590 /* 591 * Allocate command DMA map. 592 */ 593 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 594 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 595 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 596 if (error != 0) { 597 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 598 goto fail; 599 } 600 601 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 602 if (error != 0) { 603 device_printf(sc->sc_dev, 604 "could not create command DMA map\n"); 605 goto fail; 606 } 607 608 /* 609 * Allocate headers DMA maps. 610 */ 611 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 612 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 613 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 614 if (error != 0) { 615 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 616 goto fail; 617 } 618 619 SLIST_INIT(&sc->free_shdr); 620 for (i = 0; i < IPW_NDATA; i++) { 621 shdr = &sc->shdr_list[i]; 622 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 623 if (error != 0) { 624 device_printf(sc->sc_dev, 625 "could not create header DMA map\n"); 626 goto fail; 627 } 628 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 629 } 630 631 /* 632 * Allocate tx buffers DMA maps. 633 */ 634 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 635 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 636 NULL, NULL, &sc->txbuf_dmat); 637 if (error != 0) { 638 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 639 goto fail; 640 } 641 642 SLIST_INIT(&sc->free_sbuf); 643 for (i = 0; i < IPW_NDATA; i++) { 644 sbuf = &sc->tx_sbuf_list[i]; 645 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 646 if (error != 0) { 647 device_printf(sc->sc_dev, 648 "could not create tx DMA map\n"); 649 goto fail; 650 } 651 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 652 } 653 654 /* 655 * Initialize tx ring. 656 */ 657 for (i = 0; i < IPW_NTBD; i++) { 658 sbd = &sc->stbd_list[i]; 659 sbd->bd = &sc->tbd_list[i]; 660 sbd->type = IPW_SBD_TYPE_NOASSOC; 661 } 662 663 /* 664 * Pre-allocate rx buffers and DMA maps. 665 */ 666 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 667 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 668 NULL, &sc->rxbuf_dmat); 669 if (error != 0) { 670 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 671 goto fail; 672 } 673 674 for (i = 0; i < IPW_NRBD; i++) { 675 sbd = &sc->srbd_list[i]; 676 sbuf = &sc->rx_sbuf_list[i]; 677 sbd->bd = &sc->rbd_list[i]; 678 679 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 680 if (sbuf->m == NULL) { 681 device_printf(sc->sc_dev, 682 "could not allocate rx mbuf\n"); 683 error = ENOMEM; 684 goto fail; 685 } 686 687 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 688 if (error != 0) { 689 device_printf(sc->sc_dev, 690 "could not create rx DMA map\n"); 691 goto fail; 692 } 693 694 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 695 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 696 &physaddr, 0); 697 if (error != 0) { 698 device_printf(sc->sc_dev, 699 "could not map rx DMA memory\n"); 700 goto fail; 701 } 702 703 sbd->type = IPW_SBD_TYPE_DATA; 704 sbd->priv = sbuf; 705 sbd->bd->physaddr = htole32(physaddr); 706 sbd->bd->len = htole32(MCLBYTES); 707 } 708 709 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 710 711 return 0; 712 713 fail: ipw_release(sc); 714 return error; 715 } 716 717 static void 718 ipw_release(struct ipw_softc *sc) 719 { 720 struct ipw_soft_buf *sbuf; 721 int i; 722 723 if (sc->parent_dmat != NULL) { 724 bus_dma_tag_destroy(sc->parent_dmat); 725 } 726 727 if (sc->tbd_dmat != NULL) { 728 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 729 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map); 730 bus_dma_tag_destroy(sc->tbd_dmat); 731 } 732 733 if (sc->rbd_dmat != NULL) { 734 if (sc->rbd_list != NULL) { 735 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 736 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 737 sc->rbd_map); 738 } 739 bus_dma_tag_destroy(sc->rbd_dmat); 740 } 741 742 if (sc->status_dmat != NULL) { 743 if (sc->status_list != NULL) { 744 bus_dmamap_unload(sc->status_dmat, sc->status_map); 745 bus_dmamem_free(sc->status_dmat, sc->status_list, 746 sc->status_map); 747 } 748 bus_dma_tag_destroy(sc->status_dmat); 749 } 750 751 for (i = 0; i < IPW_NTBD; i++) 752 ipw_release_sbd(sc, &sc->stbd_list[i]); 753 754 if (sc->cmd_dmat != NULL) { 755 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 756 bus_dma_tag_destroy(sc->cmd_dmat); 757 } 758 759 if (sc->hdr_dmat != NULL) { 760 for (i = 0; i < IPW_NDATA; i++) 761 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 762 bus_dma_tag_destroy(sc->hdr_dmat); 763 } 764 765 if (sc->txbuf_dmat != NULL) { 766 for (i = 0; i < IPW_NDATA; i++) { 767 bus_dmamap_destroy(sc->txbuf_dmat, 768 sc->tx_sbuf_list[i].map); 769 } 770 bus_dma_tag_destroy(sc->txbuf_dmat); 771 } 772 773 if (sc->rxbuf_dmat != NULL) { 774 for (i = 0; i < IPW_NRBD; i++) { 775 sbuf = &sc->rx_sbuf_list[i]; 776 if (sbuf->m != NULL) { 777 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 778 BUS_DMASYNC_POSTREAD); 779 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 780 m_freem(sbuf->m); 781 } 782 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 783 } 784 bus_dma_tag_destroy(sc->rxbuf_dmat); 785 } 786 } 787 788 static int 789 ipw_shutdown(device_t dev) 790 { 791 struct ipw_softc *sc = device_get_softc(dev); 792 793 ipw_stop(sc); 794 795 return 0; 796 } 797 798 static int 799 ipw_suspend(device_t dev) 800 { 801 struct ipw_softc *sc = device_get_softc(dev); 802 struct ieee80211com *ic = &sc->sc_ic; 803 804 ieee80211_suspend_all(ic); 805 return 0; 806 } 807 808 static int 809 ipw_resume(device_t dev) 810 { 811 struct ipw_softc *sc = device_get_softc(dev); 812 struct ieee80211com *ic = &sc->sc_ic; 813 814 pci_write_config(dev, 0x41, 0, 1); 815 816 ieee80211_resume_all(ic); 817 return 0; 818 } 819 820 static int 821 ipw_cvtrate(int ipwrate) 822 { 823 switch (ipwrate) { 824 case IPW_RATE_DS1: return 2; 825 case IPW_RATE_DS2: return 4; 826 case IPW_RATE_DS5: return 11; 827 case IPW_RATE_DS11: return 22; 828 } 829 return 0; 830 } 831 832 /* 833 * The firmware automatically adapts the transmit speed. We report its current 834 * value here. 835 */ 836 static void 837 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 838 { 839 struct ieee80211vap *vap = ifp->if_softc; 840 struct ieee80211com *ic = vap->iv_ic; 841 struct ipw_softc *sc = ic->ic_softc; 842 843 /* read current transmission rate from adapter */ 844 vap->iv_bss->ni_txrate = ipw_cvtrate( 845 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 846 ieee80211_media_status(ifp, imr); 847 } 848 849 static int 850 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 851 { 852 struct ipw_vap *ivp = IPW_VAP(vap); 853 struct ieee80211com *ic = vap->iv_ic; 854 struct ipw_softc *sc = ic->ic_softc; 855 enum ieee80211_state ostate; 856 857 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 858 ieee80211_state_name[vap->iv_state], 859 ieee80211_state_name[nstate], sc->flags)); 860 861 ostate = vap->iv_state; 862 IEEE80211_UNLOCK(ic); 863 864 switch (nstate) { 865 case IEEE80211_S_RUN: 866 if (ic->ic_opmode == IEEE80211_M_IBSS) { 867 /* 868 * XXX when joining an ibss network we are called 869 * with a SCAN -> RUN transition on scan complete. 870 * Use that to call ipw_assoc. On completing the 871 * join we are then called again with an AUTH -> RUN 872 * transition and we want to do nothing. This is 873 * all totally bogus and needs to be redone. 874 */ 875 if (ostate == IEEE80211_S_SCAN) 876 ipw_assoc(ic, vap); 877 } 878 break; 879 880 case IEEE80211_S_INIT: 881 if (sc->flags & IPW_FLAG_ASSOCIATED) 882 ipw_disassoc(ic, vap); 883 break; 884 885 case IEEE80211_S_AUTH: 886 /* 887 * Move to ASSOC state after the ipw_assoc() call. Firmware 888 * takes care of authentication, after the call we'll receive 889 * only an assoc response which would otherwise be discared 890 * if we are still in AUTH state. 891 */ 892 nstate = IEEE80211_S_ASSOC; 893 ipw_assoc(ic, vap); 894 break; 895 896 case IEEE80211_S_ASSOC: 897 /* 898 * If we are not transitioning from AUTH then resend the 899 * association request. 900 */ 901 if (ostate != IEEE80211_S_AUTH) 902 ipw_assoc(ic, vap); 903 break; 904 905 default: 906 break; 907 } 908 IEEE80211_LOCK(ic); 909 return ivp->newstate(vap, nstate, arg); 910 } 911 912 /* 913 * Read 16 bits at address 'addr' from the serial EEPROM. 914 */ 915 static uint16_t 916 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 917 { 918 uint32_t tmp; 919 uint16_t val; 920 int n; 921 922 /* clock C once before the first command */ 923 IPW_EEPROM_CTL(sc, 0); 924 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 925 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 926 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 927 928 /* write start bit (1) */ 929 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 930 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 931 932 /* write READ opcode (10) */ 933 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 934 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 935 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 936 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 937 938 /* write address A7-A0 */ 939 for (n = 7; n >= 0; n--) { 940 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 941 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 942 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 943 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 944 } 945 946 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 947 948 /* read data Q15-Q0 */ 949 val = 0; 950 for (n = 15; n >= 0; n--) { 951 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 952 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 953 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 954 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 955 } 956 957 IPW_EEPROM_CTL(sc, 0); 958 959 /* clear Chip Select and clock C */ 960 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 961 IPW_EEPROM_CTL(sc, 0); 962 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 963 964 return le16toh(val); 965 } 966 967 static uint16_t 968 ipw_read_chanmask(struct ipw_softc *sc) 969 { 970 uint16_t val; 971 972 /* set supported .11b channels (read from EEPROM) */ 973 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 974 val = 0x7ff; /* default to channels 1-11 */ 975 val <<= 1; 976 977 return (val); 978 } 979 980 static void 981 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 982 { 983 struct ipw_cmd *cmd; 984 985 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 986 987 cmd = mtod(sbuf->m, struct ipw_cmd *); 988 989 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 990 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 991 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 992 le32toh(cmd->status))); 993 994 sc->flags &= ~IPW_FLAG_BUSY; 995 wakeup(sc); 996 } 997 998 static void 999 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1000 { 1001 #define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1002 struct ieee80211com *ic = &sc->sc_ic; 1003 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1004 uint32_t state; 1005 1006 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1007 1008 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1009 1010 switch (state) { 1011 case IPW_STATE_ASSOCIATED: 1012 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1013 IEEESTATE(vap), sc->flags)); 1014 /* XXX suppress state change in case the fw auto-associates */ 1015 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1016 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1017 IEEESTATE(vap), sc->flags)); 1018 break; 1019 } 1020 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1021 sc->flags |= IPW_FLAG_ASSOCIATED; 1022 break; 1023 1024 case IPW_STATE_SCANNING: 1025 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1026 IEEESTATE(vap), sc->flags)); 1027 /* 1028 * NB: Check driver state for association on assoc 1029 * loss as the firmware will immediately start to 1030 * scan and we would treat it as a beacon miss if 1031 * we checked the 802.11 layer state. 1032 */ 1033 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1034 IPW_UNLOCK(sc); 1035 /* XXX probably need to issue disassoc to fw */ 1036 ieee80211_beacon_miss(ic); 1037 IPW_LOCK(sc); 1038 } 1039 break; 1040 1041 case IPW_STATE_SCAN_COMPLETE: 1042 /* 1043 * XXX For some reason scan requests generate scan 1044 * started + scan done events before any traffic is 1045 * received (e.g. probe response frames). We work 1046 * around this by marking the HACK flag and skipping 1047 * the first scan complete event. 1048 */ 1049 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1050 IEEESTATE(vap), sc->flags)); 1051 if (sc->flags & IPW_FLAG_HACK) { 1052 sc->flags &= ~IPW_FLAG_HACK; 1053 break; 1054 } 1055 if (sc->flags & IPW_FLAG_SCANNING) { 1056 IPW_UNLOCK(sc); 1057 ieee80211_scan_done(vap); 1058 IPW_LOCK(sc); 1059 sc->flags &= ~IPW_FLAG_SCANNING; 1060 sc->sc_scan_timer = 0; 1061 } 1062 break; 1063 1064 case IPW_STATE_ASSOCIATION_LOST: 1065 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1066 IEEESTATE(vap), sc->flags)); 1067 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1068 if (vap->iv_state == IEEE80211_S_RUN) { 1069 IPW_UNLOCK(sc); 1070 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1071 IPW_LOCK(sc); 1072 } 1073 break; 1074 1075 case IPW_STATE_DISABLED: 1076 /* XXX? is this right? */ 1077 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1078 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1079 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1080 IEEESTATE(vap), sc->flags)); 1081 break; 1082 1083 case IPW_STATE_RADIO_DISABLED: 1084 device_printf(sc->sc_dev, "radio turned off\n"); 1085 ieee80211_notify_radio(ic, 0); 1086 ipw_stop_locked(sc); 1087 /* XXX start polling thread to detect radio on */ 1088 break; 1089 1090 default: 1091 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1092 __func__, state, IEEESTATE(vap), sc->flags)); 1093 break; 1094 } 1095 #undef IEEESTATE 1096 } 1097 1098 /* 1099 * Set driver state for current channel. 1100 */ 1101 static void 1102 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1103 { 1104 struct ieee80211com *ic = &sc->sc_ic; 1105 1106 ic->ic_curchan = chan; 1107 ieee80211_radiotap_chan_change(ic); 1108 } 1109 1110 /* 1111 * XXX: Hack to set the current channel to the value advertised in beacons or 1112 * probe responses. Only used during AP detection. 1113 */ 1114 static void 1115 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1116 { 1117 struct ieee80211com *ic = &sc->sc_ic; 1118 struct ieee80211_channel *c; 1119 struct ieee80211_frame *wh; 1120 uint8_t subtype; 1121 uint8_t *frm, *efrm; 1122 1123 wh = mtod(m, struct ieee80211_frame *); 1124 1125 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1126 return; 1127 1128 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1129 1130 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1131 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1132 return; 1133 1134 /* XXX use ieee80211_parse_beacon */ 1135 frm = (uint8_t *)(wh + 1); 1136 efrm = mtod(m, uint8_t *) + m->m_len; 1137 1138 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1139 while (frm < efrm) { 1140 if (*frm == IEEE80211_ELEMID_DSPARMS) 1141 #if IEEE80211_CHAN_MAX < 255 1142 if (frm[2] <= IEEE80211_CHAN_MAX) 1143 #endif 1144 { 1145 DPRINTF(("Fixing channel to %d\n", frm[2])); 1146 c = ieee80211_find_channel(ic, 1147 ieee80211_ieee2mhz(frm[2], 0), 1148 IEEE80211_CHAN_B); 1149 if (c == NULL) 1150 c = &ic->ic_channels[0]; 1151 ipw_setcurchan(sc, c); 1152 } 1153 1154 frm += frm[1] + 2; 1155 } 1156 } 1157 1158 static void 1159 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1160 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1161 { 1162 struct ieee80211com *ic = &sc->sc_ic; 1163 struct mbuf *mnew, *m; 1164 struct ieee80211_node *ni; 1165 bus_addr_t physaddr; 1166 int error; 1167 int8_t rssi, nf; 1168 1169 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1170 status->rssi)); 1171 1172 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1173 le32toh(status->len) > MCLBYTES) 1174 return; 1175 1176 /* 1177 * Try to allocate a new mbuf for this ring element and load it before 1178 * processing the current mbuf. If the ring element cannot be loaded, 1179 * drop the received packet and reuse the old mbuf. In the unlikely 1180 * case that the old mbuf can't be reloaded either, explicitly panic. 1181 */ 1182 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1183 if (mnew == NULL) { 1184 counter_u64_add(ic->ic_ierrors, 1); 1185 return; 1186 } 1187 1188 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1189 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1190 1191 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1192 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1193 if (error != 0) { 1194 m_freem(mnew); 1195 1196 /* try to reload the old mbuf */ 1197 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1198 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1199 &physaddr, 0); 1200 if (error != 0) { 1201 /* very unlikely that it will fail... */ 1202 panic("%s: could not load old rx mbuf", 1203 device_get_name(sc->sc_dev)); 1204 } 1205 counter_u64_add(ic->ic_ierrors, 1); 1206 return; 1207 } 1208 1209 /* 1210 * New mbuf successfully loaded, update Rx ring and continue 1211 * processing. 1212 */ 1213 m = sbuf->m; 1214 sbuf->m = mnew; 1215 sbd->bd->physaddr = htole32(physaddr); 1216 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1217 1218 rssi = status->rssi + IPW_RSSI_TO_DBM; 1219 nf = -95; 1220 if (ieee80211_radiotap_active(ic)) { 1221 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1222 1223 tap->wr_flags = 0; 1224 tap->wr_antsignal = rssi; 1225 tap->wr_antnoise = nf; 1226 } 1227 1228 if (sc->flags & IPW_FLAG_SCANNING) 1229 ipw_fix_channel(sc, m); 1230 1231 IPW_UNLOCK(sc); 1232 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1233 if (ni != NULL) { 1234 (void) ieee80211_input(ni, m, rssi - nf, nf); 1235 ieee80211_free_node(ni); 1236 } else 1237 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1238 IPW_LOCK(sc); 1239 1240 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1241 } 1242 1243 static void 1244 ipw_rx_intr(struct ipw_softc *sc) 1245 { 1246 struct ipw_status *status; 1247 struct ipw_soft_bd *sbd; 1248 struct ipw_soft_buf *sbuf; 1249 uint32_t r, i; 1250 1251 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1252 return; 1253 1254 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1255 1256 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1257 1258 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1259 status = &sc->status_list[i]; 1260 sbd = &sc->srbd_list[i]; 1261 sbuf = sbd->priv; 1262 1263 switch (le16toh(status->code) & 0xf) { 1264 case IPW_STATUS_CODE_COMMAND: 1265 ipw_rx_cmd_intr(sc, sbuf); 1266 break; 1267 1268 case IPW_STATUS_CODE_NEWSTATE: 1269 ipw_rx_newstate_intr(sc, sbuf); 1270 break; 1271 1272 case IPW_STATUS_CODE_DATA_802_3: 1273 case IPW_STATUS_CODE_DATA_802_11: 1274 ipw_rx_data_intr(sc, status, sbd, sbuf); 1275 break; 1276 1277 case IPW_STATUS_CODE_NOTIFICATION: 1278 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1279 le32toh(status->len), status->flags)); 1280 /* XXX maybe drive state machine AUTH->ASSOC? */ 1281 break; 1282 1283 default: 1284 device_printf(sc->sc_dev, "unexpected status code %u\n", 1285 le16toh(status->code)); 1286 } 1287 1288 /* firmware was killed, stop processing received frames */ 1289 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1290 return; 1291 1292 sbd->bd->flags = 0; 1293 } 1294 1295 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1296 1297 /* kick the firmware */ 1298 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1299 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1300 } 1301 1302 static void 1303 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1304 { 1305 struct ipw_soft_hdr *shdr; 1306 struct ipw_soft_buf *sbuf; 1307 1308 switch (sbd->type) { 1309 case IPW_SBD_TYPE_COMMAND: 1310 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1311 BUS_DMASYNC_POSTWRITE); 1312 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1313 break; 1314 1315 case IPW_SBD_TYPE_HEADER: 1316 shdr = sbd->priv; 1317 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1318 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1319 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1320 break; 1321 1322 case IPW_SBD_TYPE_DATA: 1323 sbuf = sbd->priv; 1324 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1325 BUS_DMASYNC_POSTWRITE); 1326 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1327 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1328 1329 if (sbuf->m->m_flags & M_TXCB) 1330 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1331 m_freem(sbuf->m); 1332 ieee80211_free_node(sbuf->ni); 1333 1334 sc->sc_tx_timer = 0; 1335 break; 1336 } 1337 1338 sbd->type = IPW_SBD_TYPE_NOASSOC; 1339 } 1340 1341 static void 1342 ipw_tx_intr(struct ipw_softc *sc) 1343 { 1344 struct ipw_soft_bd *sbd; 1345 uint32_t r, i; 1346 1347 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1348 return; 1349 1350 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1351 1352 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1353 sbd = &sc->stbd_list[i]; 1354 ipw_release_sbd(sc, sbd); 1355 sc->txfree++; 1356 } 1357 1358 /* remember what the firmware has processed */ 1359 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1360 1361 ipw_start(sc); 1362 } 1363 1364 static void 1365 ipw_fatal_error_intr(struct ipw_softc *sc) 1366 { 1367 struct ieee80211com *ic = &sc->sc_ic; 1368 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1369 1370 device_printf(sc->sc_dev, "firmware error\n"); 1371 if (vap != NULL) { 1372 IPW_UNLOCK(sc); 1373 ieee80211_cancel_scan(vap); 1374 IPW_LOCK(sc); 1375 } 1376 ieee80211_runtask(ic, &sc->sc_init_task); 1377 } 1378 1379 static void 1380 ipw_intr(void *arg) 1381 { 1382 struct ipw_softc *sc = arg; 1383 uint32_t r; 1384 1385 IPW_LOCK(sc); 1386 1387 r = CSR_READ_4(sc, IPW_CSR_INTR); 1388 if (r == 0 || r == 0xffffffff) 1389 goto done; 1390 1391 /* disable interrupts */ 1392 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1393 1394 /* acknowledge all interrupts */ 1395 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1396 1397 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1398 ipw_fatal_error_intr(sc); 1399 goto done; 1400 } 1401 1402 if (r & IPW_INTR_FW_INIT_DONE) 1403 wakeup(sc); 1404 1405 if (r & IPW_INTR_RX_TRANSFER) 1406 ipw_rx_intr(sc); 1407 1408 if (r & IPW_INTR_TX_TRANSFER) 1409 ipw_tx_intr(sc); 1410 1411 /* re-enable interrupts */ 1412 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1413 done: 1414 IPW_UNLOCK(sc); 1415 } 1416 1417 static void 1418 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1419 { 1420 if (error != 0) 1421 return; 1422 1423 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1424 1425 *(bus_addr_t *)arg = segs[0].ds_addr; 1426 } 1427 1428 static const char * 1429 ipw_cmdname(int cmd) 1430 { 1431 static const struct { 1432 int cmd; 1433 const char *name; 1434 } cmds[] = { 1435 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1436 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1437 { IPW_CMD_DISABLE, "DISABLE" }, 1438 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1439 { IPW_CMD_ENABLE, "ENABLE" }, 1440 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1441 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1442 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1443 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1444 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1445 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1446 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1447 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1448 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1449 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1450 { IPW_CMD_SET_MODE, "SET_MODE" }, 1451 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1452 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1453 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1454 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1455 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1456 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1457 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1458 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1459 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1460 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1461 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1462 1463 }; 1464 static char buf[12]; 1465 int i; 1466 1467 for (i = 0; i < nitems(cmds); i++) 1468 if (cmds[i].cmd == cmd) 1469 return cmds[i].name; 1470 snprintf(buf, sizeof(buf), "%u", cmd); 1471 return buf; 1472 } 1473 1474 /* 1475 * Send a command to the firmware and wait for the acknowledgement. 1476 */ 1477 static int 1478 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1479 { 1480 struct ipw_soft_bd *sbd; 1481 bus_addr_t physaddr; 1482 int error; 1483 1484 IPW_LOCK_ASSERT(sc); 1485 1486 if (sc->flags & IPW_FLAG_BUSY) { 1487 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1488 __func__, ipw_cmdname(type)); 1489 return EAGAIN; 1490 } 1491 sc->flags |= IPW_FLAG_BUSY; 1492 1493 sbd = &sc->stbd_list[sc->txcur]; 1494 1495 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1496 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1497 if (error != 0) { 1498 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1499 sc->flags &= ~IPW_FLAG_BUSY; 1500 return error; 1501 } 1502 1503 sc->cmd.type = htole32(type); 1504 sc->cmd.subtype = 0; 1505 sc->cmd.len = htole32(len); 1506 sc->cmd.seq = 0; 1507 memcpy(sc->cmd.data, data, len); 1508 1509 sbd->type = IPW_SBD_TYPE_COMMAND; 1510 sbd->bd->physaddr = htole32(physaddr); 1511 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1512 sbd->bd->nfrag = 1; 1513 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1514 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1515 1516 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1517 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1518 1519 #ifdef IPW_DEBUG 1520 if (ipw_debug >= 4) { 1521 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1522 0, 0, len); 1523 /* Print the data buffer in the higher debug level */ 1524 if (ipw_debug >= 9 && len > 0) { 1525 printf(" data: 0x"); 1526 for (int i = 1; i <= len; i++) 1527 printf("%1D", (u_char *)data + len - i, ""); 1528 } 1529 printf("\n"); 1530 } 1531 #endif 1532 1533 /* kick firmware */ 1534 sc->txfree--; 1535 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1536 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1537 1538 /* wait at most one second for command to complete */ 1539 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1540 if (error != 0) { 1541 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1542 __func__, ipw_cmdname(type), error); 1543 sc->flags &= ~IPW_FLAG_BUSY; 1544 return (error); 1545 } 1546 return (0); 1547 } 1548 1549 static int 1550 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1551 { 1552 struct ieee80211com *ic = &sc->sc_ic; 1553 struct ieee80211vap *vap = ni->ni_vap; 1554 struct ieee80211_frame *wh; 1555 struct ipw_soft_bd *sbd; 1556 struct ipw_soft_hdr *shdr; 1557 struct ipw_soft_buf *sbuf; 1558 struct ieee80211_key *k; 1559 struct mbuf *mnew; 1560 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1561 bus_addr_t physaddr; 1562 int nsegs, error, i; 1563 1564 wh = mtod(m0, struct ieee80211_frame *); 1565 1566 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1567 k = ieee80211_crypto_encap(ni, m0); 1568 if (k == NULL) { 1569 m_freem(m0); 1570 return ENOBUFS; 1571 } 1572 /* packet header may have moved, reset our local pointer */ 1573 wh = mtod(m0, struct ieee80211_frame *); 1574 } 1575 1576 if (ieee80211_radiotap_active_vap(vap)) { 1577 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1578 1579 tap->wt_flags = 0; 1580 1581 ieee80211_radiotap_tx(vap, m0); 1582 } 1583 1584 shdr = SLIST_FIRST(&sc->free_shdr); 1585 sbuf = SLIST_FIRST(&sc->free_sbuf); 1586 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1587 1588 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1589 shdr->hdr.subtype = 0; 1590 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0; 1591 shdr->hdr.encrypt = 0; 1592 shdr->hdr.keyidx = 0; 1593 shdr->hdr.keysz = 0; 1594 shdr->hdr.fragmentsz = 0; 1595 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1596 if (ic->ic_opmode == IEEE80211_M_STA) 1597 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1598 else 1599 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1600 1601 /* trim IEEE802.11 header */ 1602 m_adj(m0, sizeof (struct ieee80211_frame)); 1603 1604 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1605 &nsegs, 0); 1606 if (error != 0 && error != EFBIG) { 1607 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1608 error); 1609 m_freem(m0); 1610 return error; 1611 } 1612 if (error != 0) { 1613 mnew = m_defrag(m0, M_NOWAIT); 1614 if (mnew == NULL) { 1615 device_printf(sc->sc_dev, 1616 "could not defragment mbuf\n"); 1617 m_freem(m0); 1618 return ENOBUFS; 1619 } 1620 m0 = mnew; 1621 1622 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1623 segs, &nsegs, 0); 1624 if (error != 0) { 1625 device_printf(sc->sc_dev, 1626 "could not map mbuf (error %d)\n", error); 1627 m_freem(m0); 1628 return error; 1629 } 1630 } 1631 1632 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1633 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1634 if (error != 0) { 1635 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1636 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1637 m_freem(m0); 1638 return error; 1639 } 1640 1641 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1642 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1643 1644 sbd = &sc->stbd_list[sc->txcur]; 1645 sbd->type = IPW_SBD_TYPE_HEADER; 1646 sbd->priv = shdr; 1647 sbd->bd->physaddr = htole32(physaddr); 1648 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1649 sbd->bd->nfrag = 1 + nsegs; 1650 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1651 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1652 1653 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1654 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1655 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1656 ":")); 1657 1658 sc->txfree--; 1659 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1660 1661 sbuf->m = m0; 1662 sbuf->ni = ni; 1663 1664 for (i = 0; i < nsegs; i++) { 1665 sbd = &sc->stbd_list[sc->txcur]; 1666 1667 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1668 sbd->bd->len = htole32(segs[i].ds_len); 1669 sbd->bd->nfrag = 0; 1670 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1671 if (i == nsegs - 1) { 1672 sbd->type = IPW_SBD_TYPE_DATA; 1673 sbd->priv = sbuf; 1674 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1675 } else { 1676 sbd->type = IPW_SBD_TYPE_NOASSOC; 1677 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1678 } 1679 1680 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1681 1682 sc->txfree--; 1683 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1684 } 1685 1686 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1687 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1688 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1689 1690 /* kick firmware */ 1691 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1692 1693 return 0; 1694 } 1695 1696 static int 1697 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1698 const struct ieee80211_bpf_params *params) 1699 { 1700 /* no support; just discard */ 1701 m_freem(m); 1702 ieee80211_free_node(ni); 1703 return 0; 1704 } 1705 1706 static int 1707 ipw_transmit(struct ieee80211com *ic, struct mbuf *m) 1708 { 1709 struct ipw_softc *sc = ic->ic_softc; 1710 int error; 1711 1712 IPW_LOCK(sc); 1713 if ((sc->flags & IPW_FLAG_RUNNING) == 0) { 1714 IPW_UNLOCK(sc); 1715 return (ENXIO); 1716 } 1717 error = mbufq_enqueue(&sc->sc_snd, m); 1718 if (error) { 1719 IPW_UNLOCK(sc); 1720 return (error); 1721 } 1722 ipw_start(sc); 1723 IPW_UNLOCK(sc); 1724 return (0); 1725 } 1726 1727 static void 1728 ipw_start(struct ipw_softc *sc) 1729 { 1730 struct ieee80211_node *ni; 1731 struct mbuf *m; 1732 1733 IPW_LOCK_ASSERT(sc); 1734 1735 while (sc->txfree < 1 + IPW_MAX_NSEG && 1736 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1737 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1738 if (ipw_tx_start(sc, m, ni) != 0) { 1739 if_inc_counter(ni->ni_vap->iv_ifp, 1740 IFCOUNTER_OERRORS, 1); 1741 ieee80211_free_node(ni); 1742 break; 1743 } 1744 /* start watchdog timer */ 1745 sc->sc_tx_timer = 5; 1746 } 1747 } 1748 1749 static void 1750 ipw_watchdog(void *arg) 1751 { 1752 struct ipw_softc *sc = arg; 1753 struct ieee80211com *ic = &sc->sc_ic; 1754 1755 IPW_LOCK_ASSERT(sc); 1756 1757 if (sc->sc_tx_timer > 0) { 1758 if (--sc->sc_tx_timer == 0) { 1759 device_printf(sc->sc_dev, "device timeout\n"); 1760 counter_u64_add(ic->ic_oerrors, 1); 1761 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1762 } 1763 } 1764 if (sc->sc_scan_timer > 0) { 1765 if (--sc->sc_scan_timer == 0) { 1766 DPRINTFN(3, ("Scan timeout\n")); 1767 /* End the scan */ 1768 if (sc->flags & IPW_FLAG_SCANNING) { 1769 IPW_UNLOCK(sc); 1770 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1771 IPW_LOCK(sc); 1772 sc->flags &= ~IPW_FLAG_SCANNING; 1773 } 1774 } 1775 } 1776 if (sc->flags & IPW_FLAG_RUNNING) 1777 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1778 } 1779 1780 static void 1781 ipw_parent(struct ieee80211com *ic) 1782 { 1783 struct ipw_softc *sc = ic->ic_softc; 1784 int startall = 0; 1785 1786 IPW_LOCK(sc); 1787 if (ic->ic_nrunning > 0) { 1788 if (!(sc->flags & IPW_FLAG_RUNNING)) { 1789 ipw_init_locked(sc); 1790 startall = 1; 1791 } 1792 } else if (sc->flags & IPW_FLAG_RUNNING) 1793 ipw_stop_locked(sc); 1794 IPW_UNLOCK(sc); 1795 if (startall) 1796 ieee80211_start_all(ic); 1797 } 1798 1799 static void 1800 ipw_stop_master(struct ipw_softc *sc) 1801 { 1802 uint32_t tmp; 1803 int ntries; 1804 1805 /* disable interrupts */ 1806 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1807 1808 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1809 for (ntries = 0; ntries < 50; ntries++) { 1810 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1811 break; 1812 DELAY(10); 1813 } 1814 if (ntries == 50) 1815 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1816 1817 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1818 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1819 1820 /* Clear all flags except the following */ 1821 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1822 } 1823 1824 static int 1825 ipw_reset(struct ipw_softc *sc) 1826 { 1827 uint32_t tmp; 1828 int ntries; 1829 1830 ipw_stop_master(sc); 1831 1832 /* move adapter to D0 state */ 1833 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1834 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1835 1836 /* wait for clock stabilization */ 1837 for (ntries = 0; ntries < 1000; ntries++) { 1838 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1839 break; 1840 DELAY(200); 1841 } 1842 if (ntries == 1000) 1843 return EIO; 1844 1845 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1846 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1847 1848 DELAY(10); 1849 1850 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1851 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1852 1853 return 0; 1854 } 1855 1856 static int 1857 ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1858 { 1859 int ms = hz < 1000 ? 1 : hz/10; 1860 int i, error; 1861 1862 for (i = 0; i < 100; i++) { 1863 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1864 return 0; 1865 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1866 if (error == 0 || error != EWOULDBLOCK) 1867 return 0; 1868 } 1869 DPRINTF(("%s: timeout waiting for %s\n", 1870 __func__, waitfor ? "disable" : "enable")); 1871 return ETIMEDOUT; 1872 } 1873 1874 static int 1875 ipw_enable(struct ipw_softc *sc) 1876 { 1877 int error; 1878 1879 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1880 DPRINTF(("Enable adapter\n")); 1881 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1882 if (error != 0) 1883 return error; 1884 error = ipw_waitfordisable(sc, 0); 1885 if (error != 0) 1886 return error; 1887 sc->flags |= IPW_FLAG_ENABLED; 1888 } 1889 return 0; 1890 } 1891 1892 static int 1893 ipw_disable(struct ipw_softc *sc) 1894 { 1895 int error; 1896 1897 if (sc->flags & IPW_FLAG_ENABLED) { 1898 DPRINTF(("Disable adapter\n")); 1899 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1900 if (error != 0) 1901 return error; 1902 error = ipw_waitfordisable(sc, 1); 1903 if (error != 0) 1904 return error; 1905 sc->flags &= ~IPW_FLAG_ENABLED; 1906 } 1907 return 0; 1908 } 1909 1910 /* 1911 * Upload the microcode to the device. 1912 */ 1913 static int 1914 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1915 { 1916 int ntries; 1917 1918 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1919 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1920 1921 MEM_WRITE_2(sc, 0x220000, 0x0703); 1922 MEM_WRITE_2(sc, 0x220000, 0x0707); 1923 1924 MEM_WRITE_1(sc, 0x210014, 0x72); 1925 MEM_WRITE_1(sc, 0x210014, 0x72); 1926 1927 MEM_WRITE_1(sc, 0x210000, 0x40); 1928 MEM_WRITE_1(sc, 0x210000, 0x00); 1929 MEM_WRITE_1(sc, 0x210000, 0x40); 1930 1931 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1932 1933 MEM_WRITE_1(sc, 0x210000, 0x00); 1934 MEM_WRITE_1(sc, 0x210000, 0x00); 1935 MEM_WRITE_1(sc, 0x210000, 0x80); 1936 1937 MEM_WRITE_2(sc, 0x220000, 0x0703); 1938 MEM_WRITE_2(sc, 0x220000, 0x0707); 1939 1940 MEM_WRITE_1(sc, 0x210014, 0x72); 1941 MEM_WRITE_1(sc, 0x210014, 0x72); 1942 1943 MEM_WRITE_1(sc, 0x210000, 0x00); 1944 MEM_WRITE_1(sc, 0x210000, 0x80); 1945 1946 for (ntries = 0; ntries < 10; ntries++) { 1947 if (MEM_READ_1(sc, 0x210000) & 1) 1948 break; 1949 DELAY(10); 1950 } 1951 if (ntries == 10) { 1952 device_printf(sc->sc_dev, 1953 "timeout waiting for ucode to initialize\n"); 1954 return EIO; 1955 } 1956 1957 MEM_WRITE_4(sc, 0x3000e0, 0); 1958 1959 return 0; 1960 } 1961 1962 /* set of macros to handle unaligned little endian data in firmware image */ 1963 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1964 #define GETLE16(p) ((p)[0] | (p)[1] << 8) 1965 static int 1966 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 1967 { 1968 const uint8_t *p, *end; 1969 uint32_t tmp, dst; 1970 uint16_t len; 1971 int error; 1972 1973 p = fw; 1974 end = fw + size; 1975 while (p < end) { 1976 dst = GETLE32(p); p += 4; 1977 len = GETLE16(p); p += 2; 1978 1979 ipw_write_mem_1(sc, dst, p, len); 1980 p += len; 1981 } 1982 1983 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 1984 IPW_IO_LED_OFF); 1985 1986 /* enable interrupts */ 1987 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1988 1989 /* kick the firmware */ 1990 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1991 1992 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1993 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 1994 1995 /* wait at most one second for firmware initialization to complete */ 1996 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 1997 device_printf(sc->sc_dev, "timeout waiting for firmware " 1998 "initialization to complete\n"); 1999 return error; 2000 } 2001 2002 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2003 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2004 IPW_IO_GPIO3_MASK); 2005 2006 return 0; 2007 } 2008 2009 static int 2010 ipw_setwepkeys(struct ipw_softc *sc) 2011 { 2012 struct ieee80211com *ic = &sc->sc_ic; 2013 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2014 struct ipw_wep_key wepkey; 2015 struct ieee80211_key *wk; 2016 int error, i; 2017 2018 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2019 wk = &vap->iv_nw_keys[i]; 2020 2021 if (wk->wk_cipher == NULL || 2022 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2023 continue; 2024 2025 wepkey.idx = i; 2026 wepkey.len = wk->wk_keylen; 2027 memset(wepkey.key, 0, sizeof wepkey.key); 2028 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2029 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2030 wepkey.len)); 2031 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2032 sizeof wepkey); 2033 if (error != 0) 2034 return error; 2035 } 2036 return 0; 2037 } 2038 2039 static int 2040 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2041 { 2042 struct ipw_wpa_ie wpaie; 2043 2044 memset(&wpaie, 0, sizeof(wpaie)); 2045 wpaie.len = htole32(ielen); 2046 /* XXX verify length */ 2047 memcpy(&wpaie.ie, ie, ielen); 2048 DPRINTF(("Setting WPA IE\n")); 2049 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2050 } 2051 2052 static int 2053 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2054 { 2055 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2056 2057 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2058 DPRINTF(("Setting mandatory BSSID to null\n")); 2059 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2060 } else { 2061 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2062 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2063 bssid, IEEE80211_ADDR_LEN); 2064 } 2065 } 2066 2067 static int 2068 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2069 { 2070 if (ssidlen == 0) { 2071 /* 2072 * A bug in the firmware breaks the ``don't associate'' 2073 * bit in the scan options command. To compensate for 2074 * this install a bogus ssid when no ssid is specified 2075 * so the firmware won't try to associate. 2076 */ 2077 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2078 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2079 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2080 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2081 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2082 "\x3c\x3d", IEEE80211_NWID_LEN); 2083 } else { 2084 #ifdef IPW_DEBUG 2085 if (ipw_debug > 0) { 2086 printf("Setting ESSID to "); 2087 ieee80211_print_essid(ssid, ssidlen); 2088 printf("\n"); 2089 } 2090 #endif 2091 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2092 } 2093 } 2094 2095 static int 2096 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2097 { 2098 struct ipw_scan_options opts; 2099 2100 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2101 opts.channels = htole32(chanmask); 2102 opts.flags = htole32(flags); 2103 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2104 } 2105 2106 static int 2107 ipw_scan(struct ipw_softc *sc) 2108 { 2109 uint32_t params; 2110 int error; 2111 2112 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2113 2114 if (sc->flags & IPW_FLAG_SCANNING) 2115 return (EBUSY); 2116 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2117 2118 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2119 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2120 if (error != 0) 2121 goto done; 2122 2123 /* 2124 * Setup null/bogus ssid so firmware doesn't use any previous 2125 * ssid to try and associate. This is because the ``don't 2126 * associate'' option bit is broken (sigh). 2127 */ 2128 error = ipw_setssid(sc, NULL, 0); 2129 if (error != 0) 2130 goto done; 2131 2132 /* 2133 * NB: the adapter may be disabled on association lost; 2134 * if so just re-enable it to kick off scanning. 2135 */ 2136 DPRINTF(("Starting scan\n")); 2137 sc->sc_scan_timer = 3; 2138 if (sc->flags & IPW_FLAG_ENABLED) { 2139 params = 0; /* XXX? */ 2140 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2141 ¶ms, sizeof(params)); 2142 } else 2143 error = ipw_enable(sc); 2144 done: 2145 if (error != 0) { 2146 DPRINTF(("Scan failed\n")); 2147 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2148 } 2149 return (error); 2150 } 2151 2152 static int 2153 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2154 { 2155 struct ieee80211com *ic = &sc->sc_ic; 2156 uint32_t data; 2157 int error; 2158 2159 data = htole32(ieee80211_chan2ieee(ic, chan)); 2160 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2161 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2162 if (error == 0) 2163 ipw_setcurchan(sc, chan); 2164 return error; 2165 } 2166 2167 static void 2168 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2169 { 2170 struct ipw_softc *sc = ic->ic_softc; 2171 struct ieee80211_node *ni = vap->iv_bss; 2172 struct ipw_security security; 2173 uint32_t data; 2174 int error; 2175 2176 IPW_LOCK(sc); 2177 error = ipw_disable(sc); 2178 if (error != 0) 2179 goto done; 2180 2181 memset(&security, 0, sizeof security); 2182 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2183 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2184 security.ciphers = htole32(IPW_CIPHER_NONE); 2185 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2186 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2187 sizeof security); 2188 if (error != 0) 2189 goto done; 2190 2191 data = htole32(vap->iv_rtsthreshold); 2192 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2193 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2194 if (error != 0) 2195 goto done; 2196 2197 data = htole32(vap->iv_fragthreshold); 2198 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2199 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2200 if (error != 0) 2201 goto done; 2202 2203 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2204 error = ipw_setwepkeys(sc); 2205 if (error != 0) 2206 goto done; 2207 2208 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2209 data = htole32(vap->iv_def_txkey); 2210 DPRINTF(("Setting wep tx key index to %u\n", 2211 le32toh(data))); 2212 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2213 sizeof data); 2214 if (error != 0) 2215 goto done; 2216 } 2217 } 2218 2219 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2220 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2221 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2222 if (error != 0) 2223 goto done; 2224 2225 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2226 if (error != 0) 2227 goto done; 2228 2229 error = ipw_setbssid(sc, ni->ni_bssid); 2230 if (error != 0) 2231 goto done; 2232 2233 if (vap->iv_appie_wpa != NULL) { 2234 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2235 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2236 if (error != 0) 2237 goto done; 2238 } 2239 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2240 error = ipw_setchannel(sc, ni->ni_chan); 2241 if (error != 0) 2242 goto done; 2243 } 2244 2245 /* lock scan to ap's channel and enable associate */ 2246 error = ipw_setscanopts(sc, 2247 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2248 if (error != 0) 2249 goto done; 2250 2251 error = ipw_enable(sc); /* finally, enable adapter */ 2252 if (error == 0) 2253 sc->flags |= IPW_FLAG_ASSOCIATING; 2254 done: 2255 IPW_UNLOCK(sc); 2256 } 2257 2258 static void 2259 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2260 { 2261 struct ieee80211_node *ni = vap->iv_bss; 2262 struct ipw_softc *sc = ic->ic_softc; 2263 2264 IPW_LOCK(sc); 2265 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2266 /* 2267 * NB: don't try to do this if ipw_stop_master has 2268 * shutdown the firmware and disabled interrupts. 2269 */ 2270 if (sc->flags & IPW_FLAG_FW_INITED) { 2271 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2272 /* 2273 * NB: firmware currently ignores bssid parameter, but 2274 * supply it in case this changes (follow linux driver). 2275 */ 2276 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2277 ni->ni_bssid, IEEE80211_ADDR_LEN); 2278 } 2279 IPW_UNLOCK(sc); 2280 } 2281 2282 /* 2283 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2284 * It is called on firmware panics or on watchdog timeouts. 2285 */ 2286 static void 2287 ipw_init_task(void *context, int pending) 2288 { 2289 ipw_init(context); 2290 } 2291 2292 static void 2293 ipw_init(void *priv) 2294 { 2295 struct ipw_softc *sc = priv; 2296 struct ieee80211com *ic = &sc->sc_ic; 2297 2298 IPW_LOCK(sc); 2299 ipw_init_locked(sc); 2300 IPW_UNLOCK(sc); 2301 2302 if (sc->flags & IPW_FLAG_RUNNING) 2303 ieee80211_start_all(ic); /* start all vap's */ 2304 } 2305 2306 static void 2307 ipw_init_locked(struct ipw_softc *sc) 2308 { 2309 struct ieee80211com *ic = &sc->sc_ic; 2310 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2311 const struct firmware *fp; 2312 const struct ipw_firmware_hdr *hdr; 2313 const char *fw; 2314 2315 IPW_LOCK_ASSERT(sc); 2316 2317 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2318 ieee80211_state_name[vap->iv_state], sc->flags)); 2319 2320 /* 2321 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2322 * when loading the firmware and we don't want to be called during this 2323 * operation. 2324 */ 2325 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2326 return; 2327 sc->flags |= IPW_FLAG_INIT_LOCKED; 2328 2329 ipw_stop_locked(sc); 2330 2331 if (ipw_reset(sc) != 0) { 2332 device_printf(sc->sc_dev, "could not reset adapter\n"); 2333 goto fail; 2334 } 2335 2336 if (sc->sc_firmware == NULL) { 2337 device_printf(sc->sc_dev, "no firmware\n"); 2338 goto fail; 2339 } 2340 /* NB: consistency already checked on load */ 2341 fp = sc->sc_firmware; 2342 hdr = (const struct ipw_firmware_hdr *)fp->data; 2343 2344 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2345 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2346 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2347 device_printf(sc->sc_dev, "could not load microcode\n"); 2348 goto fail; 2349 } 2350 2351 ipw_stop_master(sc); 2352 2353 /* 2354 * Setup tx, rx and status rings. 2355 */ 2356 sc->txold = IPW_NTBD - 1; 2357 sc->txcur = 0; 2358 sc->txfree = IPW_NTBD - 2; 2359 sc->rxcur = IPW_NRBD - 1; 2360 2361 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2362 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2363 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2364 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2365 2366 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2367 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2368 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2369 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2370 2371 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2372 2373 fw = (const char *)fp->data + sizeof *hdr; 2374 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2375 device_printf(sc->sc_dev, "could not load firmware\n"); 2376 goto fail; 2377 } 2378 2379 sc->flags |= IPW_FLAG_FW_INITED; 2380 2381 /* retrieve information tables base addresses */ 2382 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2383 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2384 2385 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2386 2387 if (ipw_config(sc) != 0) { 2388 device_printf(sc->sc_dev, "device configuration failed\n"); 2389 goto fail; 2390 } 2391 2392 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2393 sc->flags |= IPW_FLAG_RUNNING; 2394 sc->flags &= ~IPW_FLAG_INIT_LOCKED; 2395 return; 2396 2397 fail: 2398 ipw_stop_locked(sc); 2399 sc->flags &= ~IPW_FLAG_INIT_LOCKED; 2400 } 2401 2402 static int 2403 ipw_config(struct ipw_softc *sc) 2404 { 2405 struct ieee80211com *ic = &sc->sc_ic; 2406 struct ipw_configuration config; 2407 uint32_t data; 2408 int error; 2409 2410 error = ipw_disable(sc); 2411 if (error != 0) 2412 return error; 2413 2414 switch (ic->ic_opmode) { 2415 case IEEE80211_M_STA: 2416 case IEEE80211_M_HOSTAP: 2417 case IEEE80211_M_WDS: /* XXX */ 2418 data = htole32(IPW_MODE_BSS); 2419 break; 2420 case IEEE80211_M_IBSS: 2421 case IEEE80211_M_AHDEMO: 2422 data = htole32(IPW_MODE_IBSS); 2423 break; 2424 case IEEE80211_M_MONITOR: 2425 data = htole32(IPW_MODE_MONITOR); 2426 break; 2427 default: 2428 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2429 return EINVAL; 2430 } 2431 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2432 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2433 if (error != 0) 2434 return error; 2435 2436 if (ic->ic_opmode == IEEE80211_M_IBSS || 2437 ic->ic_opmode == IEEE80211_M_MONITOR) { 2438 error = ipw_setchannel(sc, ic->ic_curchan); 2439 if (error != 0) 2440 return error; 2441 } 2442 2443 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2444 return ipw_enable(sc); 2445 2446 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2447 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2448 if (ic->ic_opmode == IEEE80211_M_IBSS) 2449 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2450 if (ic->ic_promisc > 0) 2451 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2452 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2453 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2454 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2455 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2456 if (error != 0) 2457 return error; 2458 2459 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2460 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2461 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2462 if (error != 0) 2463 return error; 2464 2465 /* Use the same rate set */ 2466 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2467 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2468 if (error != 0) 2469 return error; 2470 2471 /* Use the same rate set */ 2472 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2473 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2474 if (error != 0) 2475 return error; 2476 2477 data = htole32(IPW_POWER_MODE_CAM); 2478 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2479 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2480 if (error != 0) 2481 return error; 2482 2483 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2484 data = htole32(32); /* default value */ 2485 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2486 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2487 sizeof data); 2488 if (error != 0) 2489 return error; 2490 } 2491 2492 return 0; 2493 } 2494 2495 static void 2496 ipw_stop(void *priv) 2497 { 2498 struct ipw_softc *sc = priv; 2499 2500 IPW_LOCK(sc); 2501 ipw_stop_locked(sc); 2502 IPW_UNLOCK(sc); 2503 } 2504 2505 static void 2506 ipw_stop_locked(struct ipw_softc *sc) 2507 { 2508 int i; 2509 2510 IPW_LOCK_ASSERT(sc); 2511 2512 callout_stop(&sc->sc_wdtimer); 2513 ipw_stop_master(sc); 2514 2515 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2516 2517 /* 2518 * Release tx buffers. 2519 */ 2520 for (i = 0; i < IPW_NTBD; i++) 2521 ipw_release_sbd(sc, &sc->stbd_list[i]); 2522 2523 sc->sc_tx_timer = 0; 2524 sc->flags &= ~IPW_FLAG_RUNNING; 2525 } 2526 2527 static int 2528 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2529 { 2530 struct ipw_softc *sc = arg1; 2531 uint32_t i, size, buf[256]; 2532 2533 memset(buf, 0, sizeof buf); 2534 2535 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2536 return SYSCTL_OUT(req, buf, sizeof buf); 2537 2538 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2539 2540 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2541 for (i = 1; i < size; i++) 2542 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2543 2544 return SYSCTL_OUT(req, buf, size); 2545 } 2546 2547 static int 2548 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2549 { 2550 struct ipw_softc *sc = arg1; 2551 int val; 2552 2553 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2554 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2555 2556 return SYSCTL_OUT(req, &val, sizeof val); 2557 } 2558 2559 static uint32_t 2560 ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2561 { 2562 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2563 } 2564 2565 static void 2566 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2567 { 2568 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2569 } 2570 2571 #if 0 2572 static int 2573 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2574 { 2575 uint32_t addr, info; 2576 uint16_t count, size; 2577 uint32_t total; 2578 2579 /* addr[4] + count[2] + size[2] */ 2580 addr = MEM_READ_4(sc, sc->table2_base + off); 2581 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2582 2583 count = info >> 16; 2584 size = info & 0xffff; 2585 total = count * size; 2586 2587 if (total > *len) { 2588 *len = total; 2589 return EINVAL; 2590 } 2591 2592 *len = total; 2593 ipw_read_mem_1(sc, addr, buf, total); 2594 2595 return 0; 2596 } 2597 2598 static void 2599 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2600 bus_size_t count) 2601 { 2602 for (; count > 0; offset++, datap++, count--) { 2603 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2604 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2605 } 2606 } 2607 #endif 2608 2609 static void 2610 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2611 bus_size_t count) 2612 { 2613 for (; count > 0; offset++, datap++, count--) { 2614 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2615 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2616 } 2617 } 2618 2619 static void 2620 ipw_scan_start(struct ieee80211com *ic) 2621 { 2622 struct ipw_softc *sc = ic->ic_softc; 2623 2624 IPW_LOCK(sc); 2625 ipw_scan(sc); 2626 IPW_UNLOCK(sc); 2627 } 2628 2629 static void 2630 ipw_getradiocaps(struct ieee80211com *ic, 2631 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2632 { 2633 struct ipw_softc *sc = ic->ic_softc; 2634 uint8_t bands[IEEE80211_MODE_BYTES]; 2635 int i; 2636 2637 memset(bands, 0, sizeof(bands)); 2638 setbit(bands, IEEE80211_MODE_11B); 2639 2640 for (i = 1; i < 16; i++) { 2641 if (sc->chanmask & (1 << i)) { 2642 ieee80211_add_channel(chans, maxchans, nchans, 2643 i, 0, 0, 0, bands); 2644 } 2645 } 2646 2647 } 2648 2649 static void 2650 ipw_set_channel(struct ieee80211com *ic) 2651 { 2652 struct ipw_softc *sc = ic->ic_softc; 2653 2654 IPW_LOCK(sc); 2655 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2656 ipw_disable(sc); 2657 ipw_setchannel(sc, ic->ic_curchan); 2658 ipw_enable(sc); 2659 } 2660 IPW_UNLOCK(sc); 2661 } 2662 2663 static void 2664 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2665 { 2666 /* NB: all channels are scanned at once */ 2667 } 2668 2669 static void 2670 ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2671 { 2672 /* NB: don't try to abort scan; wait for firmware to finish */ 2673 } 2674 2675 static void 2676 ipw_scan_end(struct ieee80211com *ic) 2677 { 2678 struct ipw_softc *sc = ic->ic_softc; 2679 2680 IPW_LOCK(sc); 2681 sc->flags &= ~IPW_FLAG_SCANNING; 2682 IPW_UNLOCK(sc); 2683 } 2684