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 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 | CTLFLAG_NEEDGIANT, sc, 0, 334 ipw_sysctl_radio, "I", 335 "radio transmitter switch state (0=off, 1=on)"); 336 337 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 338 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 339 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0, 340 ipw_sysctl_stats, "S", "statistics"); 341 342 /* 343 * Hook our interrupt after all initialization is complete. 344 */ 345 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 346 NULL, ipw_intr, sc, &sc->sc_ih); 347 if (error != 0) { 348 device_printf(dev, "could not set up interrupt\n"); 349 goto fail3; 350 } 351 352 if (bootverbose) 353 ieee80211_announce(ic); 354 355 return 0; 356 fail3: 357 ipw_release(sc); 358 fail2: 359 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 360 fail1: 361 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 362 sc->mem); 363 fail: 364 mtx_destroy(&sc->sc_mtx); 365 return ENXIO; 366 } 367 368 static int 369 ipw_detach(device_t dev) 370 { 371 struct ipw_softc *sc = device_get_softc(dev); 372 struct ieee80211com *ic = &sc->sc_ic; 373 374 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 375 376 ieee80211_draintask(ic, &sc->sc_init_task); 377 ipw_stop(sc); 378 379 ieee80211_ifdetach(ic); 380 381 callout_drain(&sc->sc_wdtimer); 382 mbufq_drain(&sc->sc_snd); 383 384 ipw_release(sc); 385 386 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 387 388 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 389 sc->mem); 390 391 if (sc->sc_firmware != NULL) { 392 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 393 sc->sc_firmware = NULL; 394 } 395 396 mtx_destroy(&sc->sc_mtx); 397 398 return 0; 399 } 400 401 static struct ieee80211vap * 402 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 403 enum ieee80211_opmode opmode, int flags, 404 const uint8_t bssid[IEEE80211_ADDR_LEN], 405 const uint8_t mac[IEEE80211_ADDR_LEN]) 406 { 407 struct ipw_softc *sc = ic->ic_softc; 408 struct ipw_vap *ivp; 409 struct ieee80211vap *vap; 410 const struct firmware *fp; 411 const struct ipw_firmware_hdr *hdr; 412 const char *imagename; 413 414 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 415 return NULL; 416 417 switch (opmode) { 418 case IEEE80211_M_STA: 419 imagename = "ipw_bss"; 420 break; 421 case IEEE80211_M_IBSS: 422 imagename = "ipw_ibss"; 423 break; 424 case IEEE80211_M_MONITOR: 425 imagename = "ipw_monitor"; 426 break; 427 default: 428 return NULL; 429 } 430 431 /* 432 * Load firmware image using the firmware(9) subsystem. Doing 433 * this unlocked is ok since we're single-threaded by the 434 * 802.11 layer. 435 */ 436 if (sc->sc_firmware == NULL || 437 strcmp(sc->sc_firmware->name, imagename) != 0) { 438 if (sc->sc_firmware != NULL) 439 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 440 sc->sc_firmware = firmware_get(imagename); 441 } 442 if (sc->sc_firmware == NULL) { 443 device_printf(sc->sc_dev, 444 "could not load firmware image '%s'\n", imagename); 445 return NULL; 446 } 447 fp = sc->sc_firmware; 448 if (fp->datasize < sizeof *hdr) { 449 device_printf(sc->sc_dev, 450 "firmware image too short %zu\n", fp->datasize); 451 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 452 sc->sc_firmware = NULL; 453 return NULL; 454 } 455 hdr = (const struct ipw_firmware_hdr *)fp->data; 456 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 457 le32toh(hdr->ucodesz)) { 458 device_printf(sc->sc_dev, 459 "firmware image too short %zu\n", fp->datasize); 460 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 461 sc->sc_firmware = NULL; 462 return NULL; 463 } 464 465 ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO); 466 vap = &ivp->vap; 467 468 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 469 /* override with driver methods */ 470 ivp->newstate = vap->iv_newstate; 471 vap->iv_newstate = ipw_newstate; 472 473 /* complete setup */ 474 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status, 475 mac); 476 ic->ic_opmode = opmode; 477 return vap; 478 } 479 480 static void 481 ipw_vap_delete(struct ieee80211vap *vap) 482 { 483 struct ipw_vap *ivp = IPW_VAP(vap); 484 485 ieee80211_vap_detach(vap); 486 free(ivp, M_80211_VAP); 487 } 488 489 static int 490 ipw_dma_alloc(struct ipw_softc *sc) 491 { 492 struct ipw_soft_bd *sbd; 493 struct ipw_soft_hdr *shdr; 494 struct ipw_soft_buf *sbuf; 495 bus_addr_t physaddr; 496 int error, i; 497 498 /* 499 * Allocate parent DMA tag for subsequent allocations. 500 */ 501 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 502 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 503 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 504 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat); 505 if (error != 0) { 506 device_printf(sc->sc_dev, "could not create parent DMA tag\n"); 507 goto fail; 508 } 509 510 /* 511 * Allocate and map tx ring. 512 */ 513 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 514 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 515 NULL, &sc->tbd_dmat); 516 if (error != 0) { 517 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 518 goto fail; 519 } 520 521 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 522 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 523 if (error != 0) { 524 device_printf(sc->sc_dev, 525 "could not allocate tx ring DMA memory\n"); 526 goto fail; 527 } 528 529 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 530 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 531 if (error != 0) { 532 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 533 goto fail; 534 } 535 536 /* 537 * Allocate and map rx ring. 538 */ 539 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 540 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 541 NULL, &sc->rbd_dmat); 542 if (error != 0) { 543 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 544 goto fail; 545 } 546 547 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 548 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 549 if (error != 0) { 550 device_printf(sc->sc_dev, 551 "could not allocate rx ring DMA memory\n"); 552 goto fail; 553 } 554 555 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 556 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 557 if (error != 0) { 558 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 559 goto fail; 560 } 561 562 /* 563 * Allocate and map status ring. 564 */ 565 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 566 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 567 NULL, NULL, &sc->status_dmat); 568 if (error != 0) { 569 device_printf(sc->sc_dev, 570 "could not create status ring DMA tag\n"); 571 goto fail; 572 } 573 574 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 575 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 576 if (error != 0) { 577 device_printf(sc->sc_dev, 578 "could not allocate status ring DMA memory\n"); 579 goto fail; 580 } 581 582 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 583 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 584 0); 585 if (error != 0) { 586 device_printf(sc->sc_dev, 587 "could not map status ring DMA memory\n"); 588 goto fail; 589 } 590 591 /* 592 * Allocate command DMA map. 593 */ 594 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 595 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 596 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 597 if (error != 0) { 598 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 599 goto fail; 600 } 601 602 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 603 if (error != 0) { 604 device_printf(sc->sc_dev, 605 "could not create command DMA map\n"); 606 goto fail; 607 } 608 609 /* 610 * Allocate headers DMA maps. 611 */ 612 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 613 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 614 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 615 if (error != 0) { 616 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 617 goto fail; 618 } 619 620 SLIST_INIT(&sc->free_shdr); 621 for (i = 0; i < IPW_NDATA; i++) { 622 shdr = &sc->shdr_list[i]; 623 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 624 if (error != 0) { 625 device_printf(sc->sc_dev, 626 "could not create header DMA map\n"); 627 goto fail; 628 } 629 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 630 } 631 632 /* 633 * Allocate tx buffers DMA maps. 634 */ 635 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 636 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 637 NULL, NULL, &sc->txbuf_dmat); 638 if (error != 0) { 639 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 640 goto fail; 641 } 642 643 SLIST_INIT(&sc->free_sbuf); 644 for (i = 0; i < IPW_NDATA; i++) { 645 sbuf = &sc->tx_sbuf_list[i]; 646 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 647 if (error != 0) { 648 device_printf(sc->sc_dev, 649 "could not create tx DMA map\n"); 650 goto fail; 651 } 652 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 653 } 654 655 /* 656 * Initialize tx ring. 657 */ 658 for (i = 0; i < IPW_NTBD; i++) { 659 sbd = &sc->stbd_list[i]; 660 sbd->bd = &sc->tbd_list[i]; 661 sbd->type = IPW_SBD_TYPE_NOASSOC; 662 } 663 664 /* 665 * Pre-allocate rx buffers and 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, 1, MCLBYTES, 0, NULL, 669 NULL, &sc->rxbuf_dmat); 670 if (error != 0) { 671 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 672 goto fail; 673 } 674 675 for (i = 0; i < IPW_NRBD; i++) { 676 sbd = &sc->srbd_list[i]; 677 sbuf = &sc->rx_sbuf_list[i]; 678 sbd->bd = &sc->rbd_list[i]; 679 680 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 681 if (sbuf->m == NULL) { 682 device_printf(sc->sc_dev, 683 "could not allocate rx mbuf\n"); 684 error = ENOMEM; 685 goto fail; 686 } 687 688 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 689 if (error != 0) { 690 device_printf(sc->sc_dev, 691 "could not create rx DMA map\n"); 692 goto fail; 693 } 694 695 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 696 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 697 &physaddr, 0); 698 if (error != 0) { 699 device_printf(sc->sc_dev, 700 "could not map rx DMA memory\n"); 701 goto fail; 702 } 703 704 sbd->type = IPW_SBD_TYPE_DATA; 705 sbd->priv = sbuf; 706 sbd->bd->physaddr = htole32(physaddr); 707 sbd->bd->len = htole32(MCLBYTES); 708 } 709 710 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 711 712 return 0; 713 714 fail: ipw_release(sc); 715 return error; 716 } 717 718 static void 719 ipw_release(struct ipw_softc *sc) 720 { 721 struct ipw_soft_buf *sbuf; 722 int i; 723 724 if (sc->parent_dmat != NULL) { 725 bus_dma_tag_destroy(sc->parent_dmat); 726 } 727 728 if (sc->tbd_dmat != NULL) { 729 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 730 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map); 731 bus_dma_tag_destroy(sc->tbd_dmat); 732 } 733 734 if (sc->rbd_dmat != NULL) { 735 if (sc->rbd_list != NULL) { 736 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 737 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 738 sc->rbd_map); 739 } 740 bus_dma_tag_destroy(sc->rbd_dmat); 741 } 742 743 if (sc->status_dmat != NULL) { 744 if (sc->status_list != NULL) { 745 bus_dmamap_unload(sc->status_dmat, sc->status_map); 746 bus_dmamem_free(sc->status_dmat, sc->status_list, 747 sc->status_map); 748 } 749 bus_dma_tag_destroy(sc->status_dmat); 750 } 751 752 for (i = 0; i < IPW_NTBD; i++) 753 ipw_release_sbd(sc, &sc->stbd_list[i]); 754 755 if (sc->cmd_dmat != NULL) { 756 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 757 bus_dma_tag_destroy(sc->cmd_dmat); 758 } 759 760 if (sc->hdr_dmat != NULL) { 761 for (i = 0; i < IPW_NDATA; i++) 762 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 763 bus_dma_tag_destroy(sc->hdr_dmat); 764 } 765 766 if (sc->txbuf_dmat != NULL) { 767 for (i = 0; i < IPW_NDATA; i++) { 768 bus_dmamap_destroy(sc->txbuf_dmat, 769 sc->tx_sbuf_list[i].map); 770 } 771 bus_dma_tag_destroy(sc->txbuf_dmat); 772 } 773 774 if (sc->rxbuf_dmat != NULL) { 775 for (i = 0; i < IPW_NRBD; i++) { 776 sbuf = &sc->rx_sbuf_list[i]; 777 if (sbuf->m != NULL) { 778 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 779 BUS_DMASYNC_POSTREAD); 780 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 781 m_freem(sbuf->m); 782 } 783 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 784 } 785 bus_dma_tag_destroy(sc->rxbuf_dmat); 786 } 787 } 788 789 static int 790 ipw_shutdown(device_t dev) 791 { 792 struct ipw_softc *sc = device_get_softc(dev); 793 794 ipw_stop(sc); 795 796 return 0; 797 } 798 799 static int 800 ipw_suspend(device_t dev) 801 { 802 struct ipw_softc *sc = device_get_softc(dev); 803 struct ieee80211com *ic = &sc->sc_ic; 804 805 ieee80211_suspend_all(ic); 806 return 0; 807 } 808 809 static int 810 ipw_resume(device_t dev) 811 { 812 struct ipw_softc *sc = device_get_softc(dev); 813 struct ieee80211com *ic = &sc->sc_ic; 814 815 pci_write_config(dev, 0x41, 0, 1); 816 817 ieee80211_resume_all(ic); 818 return 0; 819 } 820 821 static int 822 ipw_cvtrate(int ipwrate) 823 { 824 switch (ipwrate) { 825 case IPW_RATE_DS1: return 2; 826 case IPW_RATE_DS2: return 4; 827 case IPW_RATE_DS5: return 11; 828 case IPW_RATE_DS11: return 22; 829 } 830 return 0; 831 } 832 833 /* 834 * The firmware automatically adapts the transmit speed. We report its current 835 * value here. 836 */ 837 static void 838 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 839 { 840 struct ieee80211vap *vap = ifp->if_softc; 841 struct ieee80211com *ic = vap->iv_ic; 842 struct ipw_softc *sc = ic->ic_softc; 843 844 /* read current transmission rate from adapter */ 845 vap->iv_bss->ni_txrate = ipw_cvtrate( 846 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 847 ieee80211_media_status(ifp, imr); 848 } 849 850 static int 851 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 852 { 853 struct ipw_vap *ivp = IPW_VAP(vap); 854 struct ieee80211com *ic = vap->iv_ic; 855 struct ipw_softc *sc = ic->ic_softc; 856 enum ieee80211_state ostate; 857 858 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 859 ieee80211_state_name[vap->iv_state], 860 ieee80211_state_name[nstate], sc->flags)); 861 862 ostate = vap->iv_state; 863 IEEE80211_UNLOCK(ic); 864 865 switch (nstate) { 866 case IEEE80211_S_RUN: 867 if (ic->ic_opmode == IEEE80211_M_IBSS) { 868 /* 869 * XXX when joining an ibss network we are called 870 * with a SCAN -> RUN transition on scan complete. 871 * Use that to call ipw_assoc. On completing the 872 * join we are then called again with an AUTH -> RUN 873 * transition and we want to do nothing. This is 874 * all totally bogus and needs to be redone. 875 */ 876 if (ostate == IEEE80211_S_SCAN) 877 ipw_assoc(ic, vap); 878 } 879 break; 880 881 case IEEE80211_S_INIT: 882 if (sc->flags & IPW_FLAG_ASSOCIATED) 883 ipw_disassoc(ic, vap); 884 break; 885 886 case IEEE80211_S_AUTH: 887 /* 888 * Move to ASSOC state after the ipw_assoc() call. Firmware 889 * takes care of authentication, after the call we'll receive 890 * only an assoc response which would otherwise be discared 891 * if we are still in AUTH state. 892 */ 893 nstate = IEEE80211_S_ASSOC; 894 ipw_assoc(ic, vap); 895 break; 896 897 case IEEE80211_S_ASSOC: 898 /* 899 * If we are not transitioning from AUTH then resend the 900 * association request. 901 */ 902 if (ostate != IEEE80211_S_AUTH) 903 ipw_assoc(ic, vap); 904 break; 905 906 default: 907 break; 908 } 909 IEEE80211_LOCK(ic); 910 return ivp->newstate(vap, nstate, arg); 911 } 912 913 /* 914 * Read 16 bits at address 'addr' from the serial EEPROM. 915 */ 916 static uint16_t 917 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 918 { 919 uint32_t tmp; 920 uint16_t val; 921 int n; 922 923 /* clock C once before the first command */ 924 IPW_EEPROM_CTL(sc, 0); 925 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 926 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 927 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 928 929 /* write start bit (1) */ 930 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 931 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 932 933 /* write READ opcode (10) */ 934 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 935 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 936 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 937 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 938 939 /* write address A7-A0 */ 940 for (n = 7; n >= 0; n--) { 941 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 942 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 943 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 944 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 945 } 946 947 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 948 949 /* read data Q15-Q0 */ 950 val = 0; 951 for (n = 15; n >= 0; n--) { 952 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 953 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 954 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 955 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 956 } 957 958 IPW_EEPROM_CTL(sc, 0); 959 960 /* clear Chip Select and clock C */ 961 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 962 IPW_EEPROM_CTL(sc, 0); 963 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 964 965 return le16toh(val); 966 } 967 968 static uint16_t 969 ipw_read_chanmask(struct ipw_softc *sc) 970 { 971 uint16_t val; 972 973 /* set supported .11b channels (read from EEPROM) */ 974 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 975 val = 0x7ff; /* default to channels 1-11 */ 976 val <<= 1; 977 978 return (val); 979 } 980 981 static void 982 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 983 { 984 struct ipw_cmd *cmd; 985 986 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 987 988 cmd = mtod(sbuf->m, struct ipw_cmd *); 989 990 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 991 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 992 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 993 le32toh(cmd->status))); 994 995 sc->flags &= ~IPW_FLAG_BUSY; 996 wakeup(sc); 997 } 998 999 static void 1000 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1001 { 1002 #define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1003 struct ieee80211com *ic = &sc->sc_ic; 1004 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1005 uint32_t state; 1006 1007 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1008 1009 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1010 1011 switch (state) { 1012 case IPW_STATE_ASSOCIATED: 1013 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1014 IEEESTATE(vap), sc->flags)); 1015 /* XXX suppress state change in case the fw auto-associates */ 1016 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1017 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1018 IEEESTATE(vap), sc->flags)); 1019 break; 1020 } 1021 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1022 sc->flags |= IPW_FLAG_ASSOCIATED; 1023 break; 1024 1025 case IPW_STATE_SCANNING: 1026 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1027 IEEESTATE(vap), sc->flags)); 1028 /* 1029 * NB: Check driver state for association on assoc 1030 * loss as the firmware will immediately start to 1031 * scan and we would treat it as a beacon miss if 1032 * we checked the 802.11 layer state. 1033 */ 1034 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1035 IPW_UNLOCK(sc); 1036 /* XXX probably need to issue disassoc to fw */ 1037 ieee80211_beacon_miss(ic); 1038 IPW_LOCK(sc); 1039 } 1040 break; 1041 1042 case IPW_STATE_SCAN_COMPLETE: 1043 /* 1044 * XXX For some reason scan requests generate scan 1045 * started + scan done events before any traffic is 1046 * received (e.g. probe response frames). We work 1047 * around this by marking the HACK flag and skipping 1048 * the first scan complete event. 1049 */ 1050 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1051 IEEESTATE(vap), sc->flags)); 1052 if (sc->flags & IPW_FLAG_HACK) { 1053 sc->flags &= ~IPW_FLAG_HACK; 1054 break; 1055 } 1056 if (sc->flags & IPW_FLAG_SCANNING) { 1057 IPW_UNLOCK(sc); 1058 ieee80211_scan_done(vap); 1059 IPW_LOCK(sc); 1060 sc->flags &= ~IPW_FLAG_SCANNING; 1061 sc->sc_scan_timer = 0; 1062 } 1063 break; 1064 1065 case IPW_STATE_ASSOCIATION_LOST: 1066 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1067 IEEESTATE(vap), sc->flags)); 1068 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1069 if (vap->iv_state == IEEE80211_S_RUN) { 1070 IPW_UNLOCK(sc); 1071 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1072 IPW_LOCK(sc); 1073 } 1074 break; 1075 1076 case IPW_STATE_DISABLED: 1077 /* XXX? is this right? */ 1078 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1079 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1080 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1081 IEEESTATE(vap), sc->flags)); 1082 break; 1083 1084 case IPW_STATE_RADIO_DISABLED: 1085 device_printf(sc->sc_dev, "radio turned off\n"); 1086 ieee80211_notify_radio(ic, 0); 1087 ipw_stop_locked(sc); 1088 /* XXX start polling thread to detect radio on */ 1089 break; 1090 1091 default: 1092 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1093 __func__, state, IEEESTATE(vap), sc->flags)); 1094 break; 1095 } 1096 #undef IEEESTATE 1097 } 1098 1099 /* 1100 * Set driver state for current channel. 1101 */ 1102 static void 1103 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1104 { 1105 struct ieee80211com *ic = &sc->sc_ic; 1106 1107 ic->ic_curchan = chan; 1108 ieee80211_radiotap_chan_change(ic); 1109 } 1110 1111 /* 1112 * XXX: Hack to set the current channel to the value advertised in beacons or 1113 * probe responses. Only used during AP detection. 1114 */ 1115 static void 1116 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1117 { 1118 struct ieee80211com *ic = &sc->sc_ic; 1119 struct ieee80211_channel *c; 1120 struct ieee80211_frame *wh; 1121 uint8_t subtype; 1122 uint8_t *frm, *efrm; 1123 1124 wh = mtod(m, struct ieee80211_frame *); 1125 1126 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1127 return; 1128 1129 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1130 1131 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1132 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1133 return; 1134 1135 /* XXX use ieee80211_parse_beacon */ 1136 frm = (uint8_t *)(wh + 1); 1137 efrm = mtod(m, uint8_t *) + m->m_len; 1138 1139 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1140 while (frm < efrm) { 1141 if (*frm == IEEE80211_ELEMID_DSPARMS) 1142 #if IEEE80211_CHAN_MAX < 255 1143 if (frm[2] <= IEEE80211_CHAN_MAX) 1144 #endif 1145 { 1146 DPRINTF(("Fixing channel to %d\n", frm[2])); 1147 c = ieee80211_find_channel(ic, 1148 ieee80211_ieee2mhz(frm[2], 0), 1149 IEEE80211_CHAN_B); 1150 if (c == NULL) 1151 c = &ic->ic_channels[0]; 1152 ipw_setcurchan(sc, c); 1153 } 1154 1155 frm += frm[1] + 2; 1156 } 1157 } 1158 1159 static void 1160 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1161 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1162 { 1163 struct epoch_tracker et; 1164 struct ieee80211com *ic = &sc->sc_ic; 1165 struct mbuf *mnew, *m; 1166 struct ieee80211_node *ni; 1167 bus_addr_t physaddr; 1168 int error; 1169 int8_t rssi, nf; 1170 1171 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1172 status->rssi)); 1173 1174 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1175 le32toh(status->len) > MCLBYTES) 1176 return; 1177 1178 /* 1179 * Try to allocate a new mbuf for this ring element and load it before 1180 * processing the current mbuf. If the ring element cannot be loaded, 1181 * drop the received packet and reuse the old mbuf. In the unlikely 1182 * case that the old mbuf can't be reloaded either, explicitly panic. 1183 */ 1184 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1185 if (mnew == NULL) { 1186 counter_u64_add(ic->ic_ierrors, 1); 1187 return; 1188 } 1189 1190 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1191 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1192 1193 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1194 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1195 if (error != 0) { 1196 m_freem(mnew); 1197 1198 /* try to reload the old mbuf */ 1199 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1200 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1201 &physaddr, 0); 1202 if (error != 0) { 1203 /* very unlikely that it will fail... */ 1204 panic("%s: could not load old rx mbuf", 1205 device_get_name(sc->sc_dev)); 1206 } 1207 counter_u64_add(ic->ic_ierrors, 1); 1208 return; 1209 } 1210 1211 /* 1212 * New mbuf successfully loaded, update Rx ring and continue 1213 * processing. 1214 */ 1215 m = sbuf->m; 1216 sbuf->m = mnew; 1217 sbd->bd->physaddr = htole32(physaddr); 1218 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1219 1220 rssi = status->rssi + IPW_RSSI_TO_DBM; 1221 nf = -95; 1222 if (ieee80211_radiotap_active(ic)) { 1223 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1224 1225 tap->wr_flags = 0; 1226 tap->wr_antsignal = rssi; 1227 tap->wr_antnoise = nf; 1228 } 1229 1230 if (sc->flags & IPW_FLAG_SCANNING) 1231 ipw_fix_channel(sc, m); 1232 1233 IPW_UNLOCK(sc); 1234 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1235 NET_EPOCH_ENTER(et); 1236 if (ni != NULL) { 1237 (void) ieee80211_input(ni, m, rssi - nf, nf); 1238 ieee80211_free_node(ni); 1239 } else 1240 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1241 NET_EPOCH_EXIT(et); 1242 IPW_LOCK(sc); 1243 1244 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1245 } 1246 1247 static void 1248 ipw_rx_intr(struct ipw_softc *sc) 1249 { 1250 struct ipw_status *status; 1251 struct ipw_soft_bd *sbd; 1252 struct ipw_soft_buf *sbuf; 1253 uint32_t r, i; 1254 1255 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1256 return; 1257 1258 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1259 1260 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1261 1262 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1263 status = &sc->status_list[i]; 1264 sbd = &sc->srbd_list[i]; 1265 sbuf = sbd->priv; 1266 1267 switch (le16toh(status->code) & 0xf) { 1268 case IPW_STATUS_CODE_COMMAND: 1269 ipw_rx_cmd_intr(sc, sbuf); 1270 break; 1271 1272 case IPW_STATUS_CODE_NEWSTATE: 1273 ipw_rx_newstate_intr(sc, sbuf); 1274 break; 1275 1276 case IPW_STATUS_CODE_DATA_802_3: 1277 case IPW_STATUS_CODE_DATA_802_11: 1278 ipw_rx_data_intr(sc, status, sbd, sbuf); 1279 break; 1280 1281 case IPW_STATUS_CODE_NOTIFICATION: 1282 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1283 le32toh(status->len), status->flags)); 1284 /* XXX maybe drive state machine AUTH->ASSOC? */ 1285 break; 1286 1287 default: 1288 device_printf(sc->sc_dev, "unexpected status code %u\n", 1289 le16toh(status->code)); 1290 } 1291 1292 /* firmware was killed, stop processing received frames */ 1293 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1294 return; 1295 1296 sbd->bd->flags = 0; 1297 } 1298 1299 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1300 1301 /* kick the firmware */ 1302 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1303 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1304 } 1305 1306 static void 1307 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1308 { 1309 struct ipw_soft_hdr *shdr; 1310 struct ipw_soft_buf *sbuf; 1311 1312 switch (sbd->type) { 1313 case IPW_SBD_TYPE_COMMAND: 1314 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1315 BUS_DMASYNC_POSTWRITE); 1316 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1317 break; 1318 1319 case IPW_SBD_TYPE_HEADER: 1320 shdr = sbd->priv; 1321 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1322 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1323 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1324 break; 1325 1326 case IPW_SBD_TYPE_DATA: 1327 sbuf = sbd->priv; 1328 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1329 BUS_DMASYNC_POSTWRITE); 1330 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1331 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1332 1333 ieee80211_tx_complete(sbuf->ni, sbuf->m, 0/*XXX*/); 1334 1335 sc->sc_tx_timer = 0; 1336 break; 1337 } 1338 1339 sbd->type = IPW_SBD_TYPE_NOASSOC; 1340 } 1341 1342 static void 1343 ipw_tx_intr(struct ipw_softc *sc) 1344 { 1345 struct ipw_soft_bd *sbd; 1346 uint32_t r, i; 1347 1348 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1349 return; 1350 1351 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1352 1353 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1354 sbd = &sc->stbd_list[i]; 1355 ipw_release_sbd(sc, sbd); 1356 sc->txfree++; 1357 } 1358 1359 /* remember what the firmware has processed */ 1360 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1361 1362 ipw_start(sc); 1363 } 1364 1365 static void 1366 ipw_fatal_error_intr(struct ipw_softc *sc) 1367 { 1368 struct ieee80211com *ic = &sc->sc_ic; 1369 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1370 1371 device_printf(sc->sc_dev, "firmware error\n"); 1372 if (vap != NULL) { 1373 IPW_UNLOCK(sc); 1374 ieee80211_cancel_scan(vap); 1375 IPW_LOCK(sc); 1376 } 1377 ieee80211_runtask(ic, &sc->sc_init_task); 1378 } 1379 1380 static void 1381 ipw_intr(void *arg) 1382 { 1383 struct ipw_softc *sc = arg; 1384 uint32_t r; 1385 1386 IPW_LOCK(sc); 1387 1388 r = CSR_READ_4(sc, IPW_CSR_INTR); 1389 if (r == 0 || r == 0xffffffff) 1390 goto done; 1391 1392 /* disable interrupts */ 1393 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1394 1395 /* acknowledge all interrupts */ 1396 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1397 1398 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1399 ipw_fatal_error_intr(sc); 1400 goto done; 1401 } 1402 1403 if (r & IPW_INTR_FW_INIT_DONE) 1404 wakeup(sc); 1405 1406 if (r & IPW_INTR_RX_TRANSFER) 1407 ipw_rx_intr(sc); 1408 1409 if (r & IPW_INTR_TX_TRANSFER) 1410 ipw_tx_intr(sc); 1411 1412 /* re-enable interrupts */ 1413 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1414 done: 1415 IPW_UNLOCK(sc); 1416 } 1417 1418 static void 1419 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1420 { 1421 if (error != 0) 1422 return; 1423 1424 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1425 1426 *(bus_addr_t *)arg = segs[0].ds_addr; 1427 } 1428 1429 static const char * 1430 ipw_cmdname(int cmd) 1431 { 1432 static const struct { 1433 int cmd; 1434 const char *name; 1435 } cmds[] = { 1436 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1437 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1438 { IPW_CMD_DISABLE, "DISABLE" }, 1439 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1440 { IPW_CMD_ENABLE, "ENABLE" }, 1441 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1442 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1443 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1444 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1445 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1446 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1447 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1448 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1449 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1450 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1451 { IPW_CMD_SET_MODE, "SET_MODE" }, 1452 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1453 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1454 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1455 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1456 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1457 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1458 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1459 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1460 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1461 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1462 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1463 1464 }; 1465 static char buf[12]; 1466 int i; 1467 1468 for (i = 0; i < nitems(cmds); i++) 1469 if (cmds[i].cmd == cmd) 1470 return cmds[i].name; 1471 snprintf(buf, sizeof(buf), "%u", cmd); 1472 return buf; 1473 } 1474 1475 /* 1476 * Send a command to the firmware and wait for the acknowledgement. 1477 */ 1478 static int 1479 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1480 { 1481 struct ipw_soft_bd *sbd; 1482 bus_addr_t physaddr; 1483 int error; 1484 1485 IPW_LOCK_ASSERT(sc); 1486 1487 if (sc->flags & IPW_FLAG_BUSY) { 1488 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1489 __func__, ipw_cmdname(type)); 1490 return EAGAIN; 1491 } 1492 sc->flags |= IPW_FLAG_BUSY; 1493 1494 sbd = &sc->stbd_list[sc->txcur]; 1495 1496 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1497 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1498 if (error != 0) { 1499 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1500 sc->flags &= ~IPW_FLAG_BUSY; 1501 return error; 1502 } 1503 1504 sc->cmd.type = htole32(type); 1505 sc->cmd.subtype = 0; 1506 sc->cmd.len = htole32(len); 1507 sc->cmd.seq = 0; 1508 memcpy(sc->cmd.data, data, len); 1509 1510 sbd->type = IPW_SBD_TYPE_COMMAND; 1511 sbd->bd->physaddr = htole32(physaddr); 1512 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1513 sbd->bd->nfrag = 1; 1514 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1515 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1516 1517 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1518 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1519 1520 #ifdef IPW_DEBUG 1521 if (ipw_debug >= 4) { 1522 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1523 0, 0, len); 1524 /* Print the data buffer in the higher debug level */ 1525 if (ipw_debug >= 9 && len > 0) { 1526 printf(" data: 0x"); 1527 for (int i = 1; i <= len; i++) 1528 printf("%1D", (u_char *)data + len - i, ""); 1529 } 1530 printf("\n"); 1531 } 1532 #endif 1533 1534 /* kick firmware */ 1535 sc->txfree--; 1536 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1537 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1538 1539 /* wait at most one second for command to complete */ 1540 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1541 if (error != 0) { 1542 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1543 __func__, ipw_cmdname(type), error); 1544 sc->flags &= ~IPW_FLAG_BUSY; 1545 return (error); 1546 } 1547 return (0); 1548 } 1549 1550 static int 1551 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1552 { 1553 struct ieee80211com *ic = &sc->sc_ic; 1554 struct ieee80211vap *vap = ni->ni_vap; 1555 struct ieee80211_frame *wh; 1556 struct ipw_soft_bd *sbd; 1557 struct ipw_soft_hdr *shdr; 1558 struct ipw_soft_buf *sbuf; 1559 struct ieee80211_key *k; 1560 struct mbuf *mnew; 1561 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1562 bus_addr_t physaddr; 1563 int nsegs, error, i; 1564 1565 wh = mtod(m0, struct ieee80211_frame *); 1566 1567 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1568 k = ieee80211_crypto_encap(ni, m0); 1569 if (k == NULL) { 1570 m_freem(m0); 1571 return ENOBUFS; 1572 } 1573 /* packet header may have moved, reset our local pointer */ 1574 wh = mtod(m0, struct ieee80211_frame *); 1575 } 1576 1577 if (ieee80211_radiotap_active_vap(vap)) { 1578 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1579 1580 tap->wt_flags = 0; 1581 1582 ieee80211_radiotap_tx(vap, m0); 1583 } 1584 1585 shdr = SLIST_FIRST(&sc->free_shdr); 1586 sbuf = SLIST_FIRST(&sc->free_sbuf); 1587 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1588 1589 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1590 shdr->hdr.subtype = 0; 1591 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0; 1592 shdr->hdr.encrypt = 0; 1593 shdr->hdr.keyidx = 0; 1594 shdr->hdr.keysz = 0; 1595 shdr->hdr.fragmentsz = 0; 1596 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1597 if (ic->ic_opmode == IEEE80211_M_STA) 1598 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1599 else 1600 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1601 1602 /* trim IEEE802.11 header */ 1603 m_adj(m0, sizeof (struct ieee80211_frame)); 1604 1605 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1606 &nsegs, 0); 1607 if (error != 0 && error != EFBIG) { 1608 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1609 error); 1610 m_freem(m0); 1611 return error; 1612 } 1613 if (error != 0) { 1614 mnew = m_defrag(m0, M_NOWAIT); 1615 if (mnew == NULL) { 1616 device_printf(sc->sc_dev, 1617 "could not defragment mbuf\n"); 1618 m_freem(m0); 1619 return ENOBUFS; 1620 } 1621 m0 = mnew; 1622 1623 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1624 segs, &nsegs, 0); 1625 if (error != 0) { 1626 device_printf(sc->sc_dev, 1627 "could not map mbuf (error %d)\n", error); 1628 m_freem(m0); 1629 return error; 1630 } 1631 } 1632 1633 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1634 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1635 if (error != 0) { 1636 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1637 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1638 m_freem(m0); 1639 return error; 1640 } 1641 1642 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1643 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1644 1645 sbd = &sc->stbd_list[sc->txcur]; 1646 sbd->type = IPW_SBD_TYPE_HEADER; 1647 sbd->priv = shdr; 1648 sbd->bd->physaddr = htole32(physaddr); 1649 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1650 sbd->bd->nfrag = 1 + nsegs; 1651 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1652 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1653 1654 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1655 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1656 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1657 ":")); 1658 1659 sc->txfree--; 1660 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1661 1662 sbuf->m = m0; 1663 sbuf->ni = ni; 1664 1665 for (i = 0; i < nsegs; i++) { 1666 sbd = &sc->stbd_list[sc->txcur]; 1667 1668 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1669 sbd->bd->len = htole32(segs[i].ds_len); 1670 sbd->bd->nfrag = 0; 1671 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1672 if (i == nsegs - 1) { 1673 sbd->type = IPW_SBD_TYPE_DATA; 1674 sbd->priv = sbuf; 1675 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1676 } else { 1677 sbd->type = IPW_SBD_TYPE_NOASSOC; 1678 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1679 } 1680 1681 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1682 1683 sc->txfree--; 1684 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1685 } 1686 1687 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1688 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1689 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1690 1691 /* kick firmware */ 1692 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1693 1694 return 0; 1695 } 1696 1697 static int 1698 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1699 const struct ieee80211_bpf_params *params) 1700 { 1701 /* no support; just discard */ 1702 m_freem(m); 1703 ieee80211_free_node(ni); 1704 return 0; 1705 } 1706 1707 static int 1708 ipw_transmit(struct ieee80211com *ic, struct mbuf *m) 1709 { 1710 struct ipw_softc *sc = ic->ic_softc; 1711 int error; 1712 1713 IPW_LOCK(sc); 1714 if ((sc->flags & IPW_FLAG_RUNNING) == 0) { 1715 IPW_UNLOCK(sc); 1716 return (ENXIO); 1717 } 1718 error = mbufq_enqueue(&sc->sc_snd, m); 1719 if (error) { 1720 IPW_UNLOCK(sc); 1721 return (error); 1722 } 1723 ipw_start(sc); 1724 IPW_UNLOCK(sc); 1725 return (0); 1726 } 1727 1728 static void 1729 ipw_start(struct ipw_softc *sc) 1730 { 1731 struct ieee80211_node *ni; 1732 struct mbuf *m; 1733 1734 IPW_LOCK_ASSERT(sc); 1735 1736 while (sc->txfree >= 1 + IPW_MAX_NSEG && 1737 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1738 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1739 if (ipw_tx_start(sc, m, ni) != 0) { 1740 if_inc_counter(ni->ni_vap->iv_ifp, 1741 IFCOUNTER_OERRORS, 1); 1742 ieee80211_free_node(ni); 1743 break; 1744 } 1745 /* start watchdog timer */ 1746 sc->sc_tx_timer = 5; 1747 } 1748 } 1749 1750 static void 1751 ipw_watchdog(void *arg) 1752 { 1753 struct ipw_softc *sc = arg; 1754 struct ieee80211com *ic = &sc->sc_ic; 1755 1756 IPW_LOCK_ASSERT(sc); 1757 1758 if (sc->sc_tx_timer > 0) { 1759 if (--sc->sc_tx_timer == 0) { 1760 device_printf(sc->sc_dev, "device timeout\n"); 1761 counter_u64_add(ic->ic_oerrors, 1); 1762 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1763 } 1764 } 1765 if (sc->sc_scan_timer > 0) { 1766 if (--sc->sc_scan_timer == 0) { 1767 DPRINTFN(3, ("Scan timeout\n")); 1768 /* End the scan */ 1769 if (sc->flags & IPW_FLAG_SCANNING) { 1770 IPW_UNLOCK(sc); 1771 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1772 IPW_LOCK(sc); 1773 sc->flags &= ~IPW_FLAG_SCANNING; 1774 } 1775 } 1776 } 1777 if (sc->flags & IPW_FLAG_RUNNING) 1778 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1779 } 1780 1781 static void 1782 ipw_parent(struct ieee80211com *ic) 1783 { 1784 struct ipw_softc *sc = ic->ic_softc; 1785 int startall = 0; 1786 1787 IPW_LOCK(sc); 1788 if (ic->ic_nrunning > 0) { 1789 if (!(sc->flags & IPW_FLAG_RUNNING)) { 1790 ipw_init_locked(sc); 1791 startall = 1; 1792 } 1793 } else if (sc->flags & IPW_FLAG_RUNNING) 1794 ipw_stop_locked(sc); 1795 IPW_UNLOCK(sc); 1796 if (startall) 1797 ieee80211_start_all(ic); 1798 } 1799 1800 static void 1801 ipw_stop_master(struct ipw_softc *sc) 1802 { 1803 uint32_t tmp; 1804 int ntries; 1805 1806 /* disable interrupts */ 1807 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1808 1809 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1810 for (ntries = 0; ntries < 50; ntries++) { 1811 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1812 break; 1813 DELAY(10); 1814 } 1815 if (ntries == 50) 1816 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1817 1818 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1819 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1820 1821 /* Clear all flags except the following */ 1822 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1823 } 1824 1825 static int 1826 ipw_reset(struct ipw_softc *sc) 1827 { 1828 uint32_t tmp; 1829 int ntries; 1830 1831 ipw_stop_master(sc); 1832 1833 /* move adapter to D0 state */ 1834 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1835 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1836 1837 /* wait for clock stabilization */ 1838 for (ntries = 0; ntries < 1000; ntries++) { 1839 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1840 break; 1841 DELAY(200); 1842 } 1843 if (ntries == 1000) 1844 return EIO; 1845 1846 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1847 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1848 1849 DELAY(10); 1850 1851 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1852 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1853 1854 return 0; 1855 } 1856 1857 static int 1858 ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1859 { 1860 int ms = hz < 1000 ? 1 : hz/10; 1861 int i, error; 1862 1863 for (i = 0; i < 100; i++) { 1864 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1865 return 0; 1866 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1867 if (error == 0 || error != EWOULDBLOCK) 1868 return 0; 1869 } 1870 DPRINTF(("%s: timeout waiting for %s\n", 1871 __func__, waitfor ? "disable" : "enable")); 1872 return ETIMEDOUT; 1873 } 1874 1875 static int 1876 ipw_enable(struct ipw_softc *sc) 1877 { 1878 int error; 1879 1880 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1881 DPRINTF(("Enable adapter\n")); 1882 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1883 if (error != 0) 1884 return error; 1885 error = ipw_waitfordisable(sc, 0); 1886 if (error != 0) 1887 return error; 1888 sc->flags |= IPW_FLAG_ENABLED; 1889 } 1890 return 0; 1891 } 1892 1893 static int 1894 ipw_disable(struct ipw_softc *sc) 1895 { 1896 int error; 1897 1898 if (sc->flags & IPW_FLAG_ENABLED) { 1899 DPRINTF(("Disable adapter\n")); 1900 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1901 if (error != 0) 1902 return error; 1903 error = ipw_waitfordisable(sc, 1); 1904 if (error != 0) 1905 return error; 1906 sc->flags &= ~IPW_FLAG_ENABLED; 1907 } 1908 return 0; 1909 } 1910 1911 /* 1912 * Upload the microcode to the device. 1913 */ 1914 static int 1915 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1916 { 1917 int ntries; 1918 1919 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1920 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1921 1922 MEM_WRITE_2(sc, 0x220000, 0x0703); 1923 MEM_WRITE_2(sc, 0x220000, 0x0707); 1924 1925 MEM_WRITE_1(sc, 0x210014, 0x72); 1926 MEM_WRITE_1(sc, 0x210014, 0x72); 1927 1928 MEM_WRITE_1(sc, 0x210000, 0x40); 1929 MEM_WRITE_1(sc, 0x210000, 0x00); 1930 MEM_WRITE_1(sc, 0x210000, 0x40); 1931 1932 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1933 1934 MEM_WRITE_1(sc, 0x210000, 0x00); 1935 MEM_WRITE_1(sc, 0x210000, 0x00); 1936 MEM_WRITE_1(sc, 0x210000, 0x80); 1937 1938 MEM_WRITE_2(sc, 0x220000, 0x0703); 1939 MEM_WRITE_2(sc, 0x220000, 0x0707); 1940 1941 MEM_WRITE_1(sc, 0x210014, 0x72); 1942 MEM_WRITE_1(sc, 0x210014, 0x72); 1943 1944 MEM_WRITE_1(sc, 0x210000, 0x00); 1945 MEM_WRITE_1(sc, 0x210000, 0x80); 1946 1947 for (ntries = 0; ntries < 10; ntries++) { 1948 if (MEM_READ_1(sc, 0x210000) & 1) 1949 break; 1950 DELAY(10); 1951 } 1952 if (ntries == 10) { 1953 device_printf(sc->sc_dev, 1954 "timeout waiting for ucode to initialize\n"); 1955 return EIO; 1956 } 1957 1958 MEM_WRITE_4(sc, 0x3000e0, 0); 1959 1960 return 0; 1961 } 1962 1963 /* set of macros to handle unaligned little endian data in firmware image */ 1964 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1965 #define GETLE16(p) ((p)[0] | (p)[1] << 8) 1966 static int 1967 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 1968 { 1969 const uint8_t *p, *end; 1970 uint32_t tmp, dst; 1971 uint16_t len; 1972 int error; 1973 1974 p = fw; 1975 end = fw + size; 1976 while (p < end) { 1977 dst = GETLE32(p); p += 4; 1978 len = GETLE16(p); p += 2; 1979 1980 ipw_write_mem_1(sc, dst, p, len); 1981 p += len; 1982 } 1983 1984 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 1985 IPW_IO_LED_OFF); 1986 1987 /* enable interrupts */ 1988 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1989 1990 /* kick the firmware */ 1991 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1992 1993 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1994 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 1995 1996 /* wait at most one second for firmware initialization to complete */ 1997 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 1998 device_printf(sc->sc_dev, "timeout waiting for firmware " 1999 "initialization to complete\n"); 2000 return error; 2001 } 2002 2003 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2004 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2005 IPW_IO_GPIO3_MASK); 2006 2007 return 0; 2008 } 2009 2010 static int 2011 ipw_setwepkeys(struct ipw_softc *sc) 2012 { 2013 struct ieee80211com *ic = &sc->sc_ic; 2014 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2015 struct ipw_wep_key wepkey; 2016 struct ieee80211_key *wk; 2017 int error, i; 2018 2019 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2020 wk = &vap->iv_nw_keys[i]; 2021 2022 if (wk->wk_cipher == NULL || 2023 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2024 continue; 2025 2026 wepkey.idx = i; 2027 wepkey.len = wk->wk_keylen; 2028 memset(wepkey.key, 0, sizeof wepkey.key); 2029 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2030 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2031 wepkey.len)); 2032 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2033 sizeof wepkey); 2034 if (error != 0) 2035 return error; 2036 } 2037 return 0; 2038 } 2039 2040 static int 2041 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2042 { 2043 struct ipw_wpa_ie wpaie; 2044 2045 memset(&wpaie, 0, sizeof(wpaie)); 2046 wpaie.len = htole32(ielen); 2047 /* XXX verify length */ 2048 memcpy(&wpaie.ie, ie, ielen); 2049 DPRINTF(("Setting WPA IE\n")); 2050 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2051 } 2052 2053 static int 2054 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2055 { 2056 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2057 2058 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2059 DPRINTF(("Setting mandatory BSSID to null\n")); 2060 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2061 } else { 2062 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2063 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2064 bssid, IEEE80211_ADDR_LEN); 2065 } 2066 } 2067 2068 static int 2069 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2070 { 2071 if (ssidlen == 0) { 2072 /* 2073 * A bug in the firmware breaks the ``don't associate'' 2074 * bit in the scan options command. To compensate for 2075 * this install a bogus ssid when no ssid is specified 2076 * so the firmware won't try to associate. 2077 */ 2078 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2079 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2080 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2081 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2082 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2083 "\x3c\x3d", IEEE80211_NWID_LEN); 2084 } else { 2085 #ifdef IPW_DEBUG 2086 if (ipw_debug > 0) { 2087 printf("Setting ESSID to "); 2088 ieee80211_print_essid(ssid, ssidlen); 2089 printf("\n"); 2090 } 2091 #endif 2092 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2093 } 2094 } 2095 2096 static int 2097 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2098 { 2099 struct ipw_scan_options opts; 2100 2101 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2102 opts.channels = htole32(chanmask); 2103 opts.flags = htole32(flags); 2104 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2105 } 2106 2107 static int 2108 ipw_scan(struct ipw_softc *sc) 2109 { 2110 uint32_t params; 2111 int error; 2112 2113 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2114 2115 if (sc->flags & IPW_FLAG_SCANNING) 2116 return (EBUSY); 2117 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2118 2119 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2120 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2121 if (error != 0) 2122 goto done; 2123 2124 /* 2125 * Setup null/bogus ssid so firmware doesn't use any previous 2126 * ssid to try and associate. This is because the ``don't 2127 * associate'' option bit is broken (sigh). 2128 */ 2129 error = ipw_setssid(sc, NULL, 0); 2130 if (error != 0) 2131 goto done; 2132 2133 /* 2134 * NB: the adapter may be disabled on association lost; 2135 * if so just re-enable it to kick off scanning. 2136 */ 2137 DPRINTF(("Starting scan\n")); 2138 sc->sc_scan_timer = 3; 2139 if (sc->flags & IPW_FLAG_ENABLED) { 2140 params = 0; /* XXX? */ 2141 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2142 ¶ms, sizeof(params)); 2143 } else 2144 error = ipw_enable(sc); 2145 done: 2146 if (error != 0) { 2147 DPRINTF(("Scan failed\n")); 2148 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2149 } 2150 return (error); 2151 } 2152 2153 static int 2154 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2155 { 2156 struct ieee80211com *ic = &sc->sc_ic; 2157 uint32_t data; 2158 int error; 2159 2160 data = htole32(ieee80211_chan2ieee(ic, chan)); 2161 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2162 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2163 if (error == 0) 2164 ipw_setcurchan(sc, chan); 2165 return error; 2166 } 2167 2168 static void 2169 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2170 { 2171 struct ipw_softc *sc = ic->ic_softc; 2172 struct ieee80211_node *ni = vap->iv_bss; 2173 struct ipw_security security; 2174 uint32_t data; 2175 int error; 2176 2177 IPW_LOCK(sc); 2178 error = ipw_disable(sc); 2179 if (error != 0) 2180 goto done; 2181 2182 memset(&security, 0, sizeof security); 2183 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2184 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2185 security.ciphers = htole32(IPW_CIPHER_NONE); 2186 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2187 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2188 sizeof security); 2189 if (error != 0) 2190 goto done; 2191 2192 data = htole32(vap->iv_rtsthreshold); 2193 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2194 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2195 if (error != 0) 2196 goto done; 2197 2198 data = htole32(vap->iv_fragthreshold); 2199 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2200 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2201 if (error != 0) 2202 goto done; 2203 2204 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2205 error = ipw_setwepkeys(sc); 2206 if (error != 0) 2207 goto done; 2208 2209 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2210 data = htole32(vap->iv_def_txkey); 2211 DPRINTF(("Setting wep tx key index to %u\n", 2212 le32toh(data))); 2213 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2214 sizeof data); 2215 if (error != 0) 2216 goto done; 2217 } 2218 } 2219 2220 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2221 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2222 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2223 if (error != 0) 2224 goto done; 2225 2226 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2227 if (error != 0) 2228 goto done; 2229 2230 error = ipw_setbssid(sc, ni->ni_bssid); 2231 if (error != 0) 2232 goto done; 2233 2234 if (vap->iv_appie_wpa != NULL) { 2235 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2236 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2237 if (error != 0) 2238 goto done; 2239 } 2240 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2241 error = ipw_setchannel(sc, ni->ni_chan); 2242 if (error != 0) 2243 goto done; 2244 } 2245 2246 /* lock scan to ap's channel and enable associate */ 2247 error = ipw_setscanopts(sc, 2248 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2249 if (error != 0) 2250 goto done; 2251 2252 error = ipw_enable(sc); /* finally, enable adapter */ 2253 if (error == 0) 2254 sc->flags |= IPW_FLAG_ASSOCIATING; 2255 done: 2256 IPW_UNLOCK(sc); 2257 } 2258 2259 static void 2260 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2261 { 2262 struct ieee80211_node *ni = vap->iv_bss; 2263 struct ipw_softc *sc = ic->ic_softc; 2264 2265 IPW_LOCK(sc); 2266 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2267 /* 2268 * NB: don't try to do this if ipw_stop_master has 2269 * shutdown the firmware and disabled interrupts. 2270 */ 2271 if (sc->flags & IPW_FLAG_FW_INITED) { 2272 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2273 /* 2274 * NB: firmware currently ignores bssid parameter, but 2275 * supply it in case this changes (follow linux driver). 2276 */ 2277 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2278 ni->ni_bssid, IEEE80211_ADDR_LEN); 2279 } 2280 IPW_UNLOCK(sc); 2281 } 2282 2283 /* 2284 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2285 * It is called on firmware panics or on watchdog timeouts. 2286 */ 2287 static void 2288 ipw_init_task(void *context, int pending) 2289 { 2290 ipw_init(context); 2291 } 2292 2293 static void 2294 ipw_init(void *priv) 2295 { 2296 struct ipw_softc *sc = priv; 2297 struct ieee80211com *ic = &sc->sc_ic; 2298 2299 IPW_LOCK(sc); 2300 ipw_init_locked(sc); 2301 IPW_UNLOCK(sc); 2302 2303 if (sc->flags & IPW_FLAG_RUNNING) 2304 ieee80211_start_all(ic); /* start all vap's */ 2305 } 2306 2307 static void 2308 ipw_init_locked(struct ipw_softc *sc) 2309 { 2310 struct ieee80211com *ic = &sc->sc_ic; 2311 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2312 const struct firmware *fp; 2313 const struct ipw_firmware_hdr *hdr; 2314 const char *fw; 2315 2316 IPW_LOCK_ASSERT(sc); 2317 2318 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2319 ieee80211_state_name[vap->iv_state], sc->flags)); 2320 2321 /* 2322 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2323 * when loading the firmware and we don't want to be called during this 2324 * operation. 2325 */ 2326 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2327 return; 2328 sc->flags |= IPW_FLAG_INIT_LOCKED; 2329 2330 ipw_stop_locked(sc); 2331 2332 if (ipw_reset(sc) != 0) { 2333 device_printf(sc->sc_dev, "could not reset adapter\n"); 2334 goto fail; 2335 } 2336 2337 if (sc->sc_firmware == NULL) { 2338 device_printf(sc->sc_dev, "no firmware\n"); 2339 goto fail; 2340 } 2341 /* NB: consistency already checked on load */ 2342 fp = sc->sc_firmware; 2343 hdr = (const struct ipw_firmware_hdr *)fp->data; 2344 2345 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2346 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2347 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2348 device_printf(sc->sc_dev, "could not load microcode\n"); 2349 goto fail; 2350 } 2351 2352 ipw_stop_master(sc); 2353 2354 /* 2355 * Setup tx, rx and status rings. 2356 */ 2357 sc->txold = IPW_NTBD - 1; 2358 sc->txcur = 0; 2359 sc->txfree = IPW_NTBD - 2; 2360 sc->rxcur = IPW_NRBD - 1; 2361 2362 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2363 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2364 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2365 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2366 2367 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2368 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2369 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2370 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2371 2372 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2373 2374 fw = (const char *)fp->data + sizeof *hdr; 2375 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2376 device_printf(sc->sc_dev, "could not load firmware\n"); 2377 goto fail; 2378 } 2379 2380 sc->flags |= IPW_FLAG_FW_INITED; 2381 2382 /* retrieve information tables base addresses */ 2383 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2384 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2385 2386 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2387 2388 if (ipw_config(sc) != 0) { 2389 device_printf(sc->sc_dev, "device configuration failed\n"); 2390 goto fail; 2391 } 2392 2393 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2394 sc->flags |= IPW_FLAG_RUNNING; 2395 sc->flags &= ~IPW_FLAG_INIT_LOCKED; 2396 return; 2397 2398 fail: 2399 ipw_stop_locked(sc); 2400 sc->flags &= ~IPW_FLAG_INIT_LOCKED; 2401 } 2402 2403 static int 2404 ipw_config(struct ipw_softc *sc) 2405 { 2406 struct ieee80211com *ic = &sc->sc_ic; 2407 struct ipw_configuration config; 2408 uint32_t data; 2409 int error; 2410 2411 error = ipw_disable(sc); 2412 if (error != 0) 2413 return error; 2414 2415 switch (ic->ic_opmode) { 2416 case IEEE80211_M_STA: 2417 case IEEE80211_M_HOSTAP: 2418 case IEEE80211_M_WDS: /* XXX */ 2419 data = htole32(IPW_MODE_BSS); 2420 break; 2421 case IEEE80211_M_IBSS: 2422 case IEEE80211_M_AHDEMO: 2423 data = htole32(IPW_MODE_IBSS); 2424 break; 2425 case IEEE80211_M_MONITOR: 2426 data = htole32(IPW_MODE_MONITOR); 2427 break; 2428 default: 2429 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2430 return EINVAL; 2431 } 2432 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2433 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2434 if (error != 0) 2435 return error; 2436 2437 if (ic->ic_opmode == IEEE80211_M_IBSS || 2438 ic->ic_opmode == IEEE80211_M_MONITOR) { 2439 error = ipw_setchannel(sc, ic->ic_curchan); 2440 if (error != 0) 2441 return error; 2442 } 2443 2444 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2445 return ipw_enable(sc); 2446 2447 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2448 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2449 if (ic->ic_opmode == IEEE80211_M_IBSS) 2450 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2451 if (ic->ic_promisc > 0) 2452 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2453 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2454 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2455 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2456 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2457 if (error != 0) 2458 return error; 2459 2460 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2461 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2462 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2463 if (error != 0) 2464 return error; 2465 2466 /* Use the same rate set */ 2467 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2468 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2469 if (error != 0) 2470 return error; 2471 2472 /* Use the same rate set */ 2473 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2474 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2475 if (error != 0) 2476 return error; 2477 2478 data = htole32(IPW_POWER_MODE_CAM); 2479 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2480 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2481 if (error != 0) 2482 return error; 2483 2484 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2485 data = htole32(32); /* default value */ 2486 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2487 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2488 sizeof data); 2489 if (error != 0) 2490 return error; 2491 } 2492 2493 return 0; 2494 } 2495 2496 static void 2497 ipw_stop(void *priv) 2498 { 2499 struct ipw_softc *sc = priv; 2500 2501 IPW_LOCK(sc); 2502 ipw_stop_locked(sc); 2503 IPW_UNLOCK(sc); 2504 } 2505 2506 static void 2507 ipw_stop_locked(struct ipw_softc *sc) 2508 { 2509 int i; 2510 2511 IPW_LOCK_ASSERT(sc); 2512 2513 callout_stop(&sc->sc_wdtimer); 2514 ipw_stop_master(sc); 2515 2516 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2517 2518 /* 2519 * Release tx buffers. 2520 */ 2521 for (i = 0; i < IPW_NTBD; i++) 2522 ipw_release_sbd(sc, &sc->stbd_list[i]); 2523 2524 sc->sc_tx_timer = 0; 2525 sc->flags &= ~IPW_FLAG_RUNNING; 2526 } 2527 2528 static int 2529 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2530 { 2531 struct ipw_softc *sc = arg1; 2532 uint32_t i, size, buf[256]; 2533 2534 memset(buf, 0, sizeof buf); 2535 2536 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2537 return SYSCTL_OUT(req, buf, sizeof buf); 2538 2539 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2540 2541 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2542 for (i = 1; i < size; i++) 2543 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2544 2545 return SYSCTL_OUT(req, buf, size); 2546 } 2547 2548 static int 2549 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2550 { 2551 struct ipw_softc *sc = arg1; 2552 int val; 2553 2554 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2555 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2556 2557 return SYSCTL_OUT(req, &val, sizeof val); 2558 } 2559 2560 static uint32_t 2561 ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2562 { 2563 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2564 } 2565 2566 static void 2567 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2568 { 2569 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2570 } 2571 2572 #if 0 2573 static int 2574 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2575 { 2576 uint32_t addr, info; 2577 uint16_t count, size; 2578 uint32_t total; 2579 2580 /* addr[4] + count[2] + size[2] */ 2581 addr = MEM_READ_4(sc, sc->table2_base + off); 2582 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2583 2584 count = info >> 16; 2585 size = info & 0xffff; 2586 total = count * size; 2587 2588 if (total > *len) { 2589 *len = total; 2590 return EINVAL; 2591 } 2592 2593 *len = total; 2594 ipw_read_mem_1(sc, addr, buf, total); 2595 2596 return 0; 2597 } 2598 2599 static void 2600 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2601 bus_size_t count) 2602 { 2603 for (; count > 0; offset++, datap++, count--) { 2604 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2605 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2606 } 2607 } 2608 #endif 2609 2610 static void 2611 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2612 bus_size_t count) 2613 { 2614 for (; count > 0; offset++, datap++, count--) { 2615 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2616 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2617 } 2618 } 2619 2620 static void 2621 ipw_scan_start(struct ieee80211com *ic) 2622 { 2623 struct ipw_softc *sc = ic->ic_softc; 2624 2625 IPW_LOCK(sc); 2626 ipw_scan(sc); 2627 IPW_UNLOCK(sc); 2628 } 2629 2630 static void 2631 ipw_getradiocaps(struct ieee80211com *ic, 2632 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2633 { 2634 struct ipw_softc *sc = ic->ic_softc; 2635 uint8_t bands[IEEE80211_MODE_BYTES]; 2636 int i; 2637 2638 memset(bands, 0, sizeof(bands)); 2639 setbit(bands, IEEE80211_MODE_11B); 2640 2641 for (i = 1; i < 16; i++) { 2642 if (sc->chanmask & (1 << i)) { 2643 ieee80211_add_channel(chans, maxchans, nchans, 2644 i, 0, 0, 0, bands); 2645 } 2646 } 2647 2648 } 2649 2650 static void 2651 ipw_set_channel(struct ieee80211com *ic) 2652 { 2653 struct ipw_softc *sc = ic->ic_softc; 2654 2655 IPW_LOCK(sc); 2656 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2657 ipw_disable(sc); 2658 ipw_setchannel(sc, ic->ic_curchan); 2659 ipw_enable(sc); 2660 } 2661 IPW_UNLOCK(sc); 2662 } 2663 2664 static void 2665 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2666 { 2667 /* NB: all channels are scanned at once */ 2668 } 2669 2670 static void 2671 ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2672 { 2673 /* NB: don't try to abort scan; wait for firmware to finish */ 2674 } 2675 2676 static void 2677 ipw_scan_end(struct ieee80211com *ic) 2678 { 2679 struct ipw_softc *sc = ic->ic_softc; 2680 2681 IPW_LOCK(sc); 2682 sc->flags &= ~IPW_FLAG_SCANNING; 2683 IPW_UNLOCK(sc); 2684 } 2685