1 /* $FreeBSD$ */ 2 3 /*- 4 * Copyright (c) 2004-2006 5 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 6 * Copyright (c) 2006 Sam Leffler, Errno Consulting 7 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice unmodified, this list of conditions, and the following 14 * disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 /*- 36 * Intel(R) PRO/Wireless 2100 MiniPCI driver 37 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 38 */ 39 40 #include <sys/param.h> 41 #include <sys/sysctl.h> 42 #include <sys/sockio.h> 43 #include <sys/mbuf.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/systm.h> 47 #include <sys/malloc.h> 48 #include <sys/queue.h> 49 #include <sys/taskqueue.h> 50 #include <sys/module.h> 51 #include <sys/bus.h> 52 #include <sys/endian.h> 53 #include <sys/linker.h> 54 #include <sys/firmware.h> 55 56 #include <machine/bus.h> 57 #include <machine/resource.h> 58 #include <sys/rman.h> 59 60 #include <dev/pci/pcireg.h> 61 #include <dev/pci/pcivar.h> 62 63 #include <net/bpf.h> 64 #include <net/if.h> 65 #include <net/if_arp.h> 66 #include <net/ethernet.h> 67 #include <net/if_dl.h> 68 #include <net/if_media.h> 69 #include <net/if_types.h> 70 71 #include <net80211/ieee80211_var.h> 72 #include <net80211/ieee80211_radiotap.h> 73 74 #include <netinet/in.h> 75 #include <netinet/in_systm.h> 76 #include <netinet/in_var.h> 77 #include <netinet/ip.h> 78 #include <netinet/if_ether.h> 79 80 #include <dev/ipw/if_ipwreg.h> 81 #include <dev/ipw/if_ipwvar.h> 82 83 #define IPW_DEBUG 84 #ifdef IPW_DEBUG 85 #define DPRINTF(x) do { if (ipw_debug > 0) printf x; } while (0) 86 #define DPRINTFN(n, x) do { if (ipw_debug >= (n)) printf x; } while (0) 87 int ipw_debug = 0; 88 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level"); 89 #else 90 #define DPRINTF(x) 91 #define DPRINTFN(n, x) 92 #endif 93 94 MODULE_DEPEND(ipw, pci, 1, 1, 1); 95 MODULE_DEPEND(ipw, wlan, 1, 1, 1); 96 MODULE_DEPEND(ipw, firmware, 1, 1, 1); 97 98 struct ipw_ident { 99 uint16_t vendor; 100 uint16_t device; 101 const char *name; 102 }; 103 104 static const struct ipw_ident ipw_ident_table[] = { 105 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" }, 106 107 { 0, 0, NULL } 108 }; 109 110 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *, 111 const char name[IFNAMSIZ], int unit, int opmode, int flags, 112 const uint8_t bssid[IEEE80211_ADDR_LEN], 113 const uint8_t mac[IEEE80211_ADDR_LEN]); 114 static void ipw_vap_delete(struct ieee80211vap *); 115 static int ipw_dma_alloc(struct ipw_softc *); 116 static void ipw_release(struct ipw_softc *); 117 static void ipw_media_status(struct ifnet *, struct ifmediareq *); 118 static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int); 119 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t); 120 static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *); 121 static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *); 122 static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *, 123 struct ipw_soft_bd *, struct ipw_soft_buf *); 124 static void ipw_rx_intr(struct ipw_softc *); 125 static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *); 126 static void ipw_tx_intr(struct ipw_softc *); 127 static void ipw_intr(void *); 128 static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int); 129 static const char * ipw_cmdname(int); 130 static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t); 131 static int ipw_tx_start(struct ifnet *, struct mbuf *, 132 struct ieee80211_node *); 133 static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *, 134 const struct ieee80211_bpf_params *); 135 static void ipw_start(struct ifnet *); 136 static void ipw_start_locked(struct ifnet *); 137 static void ipw_watchdog(void *); 138 static int ipw_ioctl(struct ifnet *, u_long, caddr_t); 139 static void ipw_stop_master(struct ipw_softc *); 140 static int ipw_enable(struct ipw_softc *); 141 static int ipw_disable(struct ipw_softc *); 142 static int ipw_reset(struct ipw_softc *); 143 static int ipw_load_ucode(struct ipw_softc *, const char *, int); 144 static int ipw_load_firmware(struct ipw_softc *, const char *, int); 145 static int ipw_config(struct ipw_softc *); 146 static void ipw_assoc(struct ieee80211com *, struct ieee80211vap *); 147 static void ipw_disassoc(struct ieee80211com *, struct ieee80211vap *); 148 static void ipw_init_task(void *, int); 149 static void ipw_init(void *); 150 static void ipw_init_locked(struct ipw_softc *); 151 static void ipw_stop(void *); 152 static void ipw_stop_locked(struct ipw_softc *); 153 static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS); 154 static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS); 155 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t); 156 static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t); 157 #if 0 158 static int ipw_read_table2(struct ipw_softc *, uint32_t, void *, 159 uint32_t *); 160 static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *, 161 bus_size_t); 162 #endif 163 static void ipw_write_mem_1(struct ipw_softc *, bus_size_t, 164 const uint8_t *, bus_size_t); 165 static int ipw_scan(struct ipw_softc *); 166 static void ipw_scan_start(struct ieee80211com *); 167 static void ipw_scan_end(struct ieee80211com *); 168 static void ipw_set_channel(struct ieee80211com *); 169 static void ipw_scan_curchan(struct ieee80211_scan_state *, 170 unsigned long maxdwell); 171 static void ipw_scan_mindwell(struct ieee80211_scan_state *); 172 173 static int ipw_probe(device_t); 174 static int ipw_attach(device_t); 175 static int ipw_detach(device_t); 176 static int ipw_shutdown(device_t); 177 static int ipw_suspend(device_t); 178 static int ipw_resume(device_t); 179 180 static device_method_t ipw_methods[] = { 181 /* Device interface */ 182 DEVMETHOD(device_probe, ipw_probe), 183 DEVMETHOD(device_attach, ipw_attach), 184 DEVMETHOD(device_detach, ipw_detach), 185 DEVMETHOD(device_shutdown, ipw_shutdown), 186 DEVMETHOD(device_suspend, ipw_suspend), 187 DEVMETHOD(device_resume, ipw_resume), 188 189 { 0, 0 } 190 }; 191 192 static driver_t ipw_driver = { 193 "ipw", 194 ipw_methods, 195 sizeof (struct ipw_softc) 196 }; 197 198 static devclass_t ipw_devclass; 199 200 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0); 201 202 static int 203 ipw_probe(device_t dev) 204 { 205 const struct ipw_ident *ident; 206 207 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 208 if (pci_get_vendor(dev) == ident->vendor && 209 pci_get_device(dev) == ident->device) { 210 device_set_desc(dev, ident->name); 211 return 0; 212 } 213 } 214 return ENXIO; 215 } 216 217 /* Base Address Register */ 218 #define IPW_PCI_BAR0 0x10 219 220 static int 221 ipw_attach(device_t dev) 222 { 223 struct ipw_softc *sc = device_get_softc(dev); 224 struct ifnet *ifp; 225 struct ieee80211com *ic; 226 struct ieee80211_channel *c; 227 uint16_t val; 228 int error, i; 229 uint8_t macaddr[IEEE80211_ADDR_LEN]; 230 231 sc->sc_dev = dev; 232 233 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 234 MTX_DEF | MTX_RECURSE); 235 236 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 237 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 238 239 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 240 device_printf(dev, "chip is in D%d power mode " 241 "-- setting to D0\n", pci_get_powerstate(dev)); 242 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 243 } 244 245 pci_write_config(dev, 0x41, 0, 1); 246 247 /* enable bus-mastering */ 248 pci_enable_busmaster(dev); 249 250 sc->mem_rid = IPW_PCI_BAR0; 251 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 252 RF_ACTIVE); 253 if (sc->mem == NULL) { 254 device_printf(dev, "could not allocate memory resource\n"); 255 goto fail; 256 } 257 258 sc->sc_st = rman_get_bustag(sc->mem); 259 sc->sc_sh = rman_get_bushandle(sc->mem); 260 261 sc->irq_rid = 0; 262 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 263 RF_ACTIVE | RF_SHAREABLE); 264 if (sc->irq == NULL) { 265 device_printf(dev, "could not allocate interrupt resource\n"); 266 goto fail1; 267 } 268 269 if (ipw_reset(sc) != 0) { 270 device_printf(dev, "could not reset adapter\n"); 271 goto fail2; 272 } 273 274 if (ipw_dma_alloc(sc) != 0) { 275 device_printf(dev, "could not allocate DMA resources\n"); 276 goto fail2; 277 } 278 279 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 280 if (ifp == NULL) { 281 device_printf(dev, "can not if_alloc()\n"); 282 goto fail3; 283 } 284 ic = ifp->if_l2com; 285 286 ifp->if_softc = sc; 287 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 288 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 289 ifp->if_init = ipw_init; 290 ifp->if_ioctl = ipw_ioctl; 291 ifp->if_start = ipw_start; 292 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 293 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 294 IFQ_SET_READY(&ifp->if_snd); 295 296 ic->ic_ifp = ifp; 297 ic->ic_opmode = IEEE80211_M_STA; 298 ic->ic_phytype = IEEE80211_T_DS; 299 300 /* set device capabilities */ 301 ic->ic_caps = 302 IEEE80211_C_STA /* station mode supported */ 303 | IEEE80211_C_IBSS /* IBSS mode supported */ 304 | IEEE80211_C_MONITOR /* monitor mode supported */ 305 | IEEE80211_C_PMGT /* power save supported */ 306 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 307 | IEEE80211_C_WPA /* 802.11i supported */ 308 ; 309 310 /* read MAC address from EEPROM */ 311 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 312 macaddr[0] = val >> 8; 313 macaddr[1] = val & 0xff; 314 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 315 macaddr[2] = val >> 8; 316 macaddr[3] = val & 0xff; 317 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 318 macaddr[4] = val >> 8; 319 macaddr[5] = val & 0xff; 320 321 /* set supported .11b channels (read from EEPROM) */ 322 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 323 val = 0x7ff; /* default to channels 1-11 */ 324 val <<= 1; 325 for (i = 1; i < 16; i++) { 326 if (val & (1 << i)) { 327 c = &ic->ic_channels[ic->ic_nchans++]; 328 c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 329 c->ic_flags = IEEE80211_CHAN_B; 330 c->ic_ieee = i; 331 } 332 } 333 334 /* check support for radio transmitter switch in EEPROM */ 335 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 336 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 337 338 ieee80211_ifattach(ic, macaddr); 339 ic->ic_scan_start = ipw_scan_start; 340 ic->ic_scan_end = ipw_scan_end; 341 ic->ic_set_channel = ipw_set_channel; 342 ic->ic_scan_curchan = ipw_scan_curchan; 343 ic->ic_scan_mindwell = ipw_scan_mindwell; 344 ic->ic_raw_xmit = ipw_raw_xmit; 345 346 ic->ic_vap_create = ipw_vap_create; 347 ic->ic_vap_delete = ipw_vap_delete; 348 349 ieee80211_radiotap_attach(ic, 350 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 351 IPW_TX_RADIOTAP_PRESENT, 352 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 353 IPW_RX_RADIOTAP_PRESENT); 354 355 /* 356 * Add a few sysctl knobs. 357 */ 358 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 359 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 360 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 361 "radio transmitter switch state (0=off, 1=on)"); 362 363 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 364 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 365 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 366 "statistics"); 367 368 /* 369 * Hook our interrupt after all initialization is complete. 370 */ 371 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 372 NULL, ipw_intr, sc, &sc->sc_ih); 373 if (error != 0) { 374 device_printf(dev, "could not set up interrupt\n"); 375 goto fail4; 376 } 377 378 if (bootverbose) 379 ieee80211_announce(ic); 380 381 return 0; 382 fail4: 383 if_free(ifp); 384 fail3: 385 ipw_release(sc); 386 fail2: 387 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 388 fail1: 389 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 390 fail: 391 mtx_destroy(&sc->sc_mtx); 392 return ENXIO; 393 } 394 395 static int 396 ipw_detach(device_t dev) 397 { 398 struct ipw_softc *sc = device_get_softc(dev); 399 struct ifnet *ifp = sc->sc_ifp; 400 struct ieee80211com *ic = ifp->if_l2com; 401 402 ieee80211_draintask(ic, &sc->sc_init_task); 403 ipw_stop(sc); 404 405 ieee80211_ifdetach(ic); 406 407 callout_drain(&sc->sc_wdtimer); 408 409 ipw_release(sc); 410 411 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 412 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 413 414 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 415 416 if_free(ifp); 417 418 if (sc->sc_firmware != NULL) { 419 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 420 sc->sc_firmware = NULL; 421 } 422 423 mtx_destroy(&sc->sc_mtx); 424 425 return 0; 426 } 427 428 static struct ieee80211vap * 429 ipw_vap_create(struct ieee80211com *ic, 430 const char name[IFNAMSIZ], int unit, int opmode, int flags, 431 const uint8_t bssid[IEEE80211_ADDR_LEN], 432 const uint8_t mac[IEEE80211_ADDR_LEN]) 433 { 434 struct ifnet *ifp = ic->ic_ifp; 435 struct ipw_softc *sc = ifp->if_softc; 436 struct ipw_vap *ivp; 437 struct ieee80211vap *vap; 438 const struct firmware *fp; 439 const struct ipw_firmware_hdr *hdr; 440 const char *imagename; 441 442 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 443 return NULL; 444 445 switch (opmode) { 446 case IEEE80211_M_STA: 447 imagename = "ipw_bss"; 448 break; 449 case IEEE80211_M_IBSS: 450 imagename = "ipw_ibss"; 451 break; 452 case IEEE80211_M_MONITOR: 453 imagename = "ipw_monitor"; 454 break; 455 default: 456 return NULL; 457 } 458 459 /* 460 * Load firmware image using the firmware(9) subsystem. Doing 461 * this unlocked is ok since we're single-threaded by the 462 * 802.11 layer. 463 */ 464 if (sc->sc_firmware == NULL || 465 strcmp(sc->sc_firmware->name, imagename) != 0) { 466 if (sc->sc_firmware != NULL) 467 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 468 sc->sc_firmware = firmware_get(imagename); 469 } 470 if (sc->sc_firmware == NULL) { 471 device_printf(sc->sc_dev, 472 "could not load firmware image '%s'\n", imagename); 473 return NULL; 474 } 475 fp = sc->sc_firmware; 476 if (fp->datasize < sizeof *hdr) { 477 device_printf(sc->sc_dev, 478 "firmware image too short %zu\n", fp->datasize); 479 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 480 sc->sc_firmware = NULL; 481 return NULL; 482 } 483 hdr = (const struct ipw_firmware_hdr *)fp->data; 484 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 485 le32toh(hdr->ucodesz)) { 486 device_printf(sc->sc_dev, 487 "firmware image too short %zu\n", fp->datasize); 488 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 489 sc->sc_firmware = NULL; 490 return NULL; 491 } 492 493 ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap), 494 M_80211_VAP, M_NOWAIT | M_ZERO); 495 if (ivp == NULL) 496 return NULL; 497 vap = &ivp->vap; 498 499 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 500 /* override with driver methods */ 501 ivp->newstate = vap->iv_newstate; 502 vap->iv_newstate = ipw_newstate; 503 504 /* complete setup */ 505 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status); 506 ic->ic_opmode = opmode; 507 return vap; 508 } 509 510 static void 511 ipw_vap_delete(struct ieee80211vap *vap) 512 { 513 struct ipw_vap *ivp = IPW_VAP(vap); 514 515 ieee80211_vap_detach(vap); 516 free(ivp, M_80211_VAP); 517 } 518 519 static int 520 ipw_dma_alloc(struct ipw_softc *sc) 521 { 522 struct ipw_soft_bd *sbd; 523 struct ipw_soft_hdr *shdr; 524 struct ipw_soft_buf *sbuf; 525 bus_addr_t physaddr; 526 int error, i; 527 528 /* 529 * Allocate and map tx ring. 530 */ 531 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 532 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 533 NULL, &sc->tbd_dmat); 534 if (error != 0) { 535 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 536 goto fail; 537 } 538 539 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 540 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 541 if (error != 0) { 542 device_printf(sc->sc_dev, 543 "could not allocate tx ring DMA memory\n"); 544 goto fail; 545 } 546 547 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 548 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 549 if (error != 0) { 550 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 551 goto fail; 552 } 553 554 /* 555 * Allocate and map rx ring. 556 */ 557 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 558 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 559 NULL, &sc->rbd_dmat); 560 if (error != 0) { 561 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 562 goto fail; 563 } 564 565 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 566 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 567 if (error != 0) { 568 device_printf(sc->sc_dev, 569 "could not allocate rx ring DMA memory\n"); 570 goto fail; 571 } 572 573 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 574 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 575 if (error != 0) { 576 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 577 goto fail; 578 } 579 580 /* 581 * Allocate and map status ring. 582 */ 583 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 584 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 585 NULL, NULL, &sc->status_dmat); 586 if (error != 0) { 587 device_printf(sc->sc_dev, 588 "could not create status ring DMA tag\n"); 589 goto fail; 590 } 591 592 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 593 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 594 if (error != 0) { 595 device_printf(sc->sc_dev, 596 "could not allocate status ring DMA memory\n"); 597 goto fail; 598 } 599 600 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 601 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 602 0); 603 if (error != 0) { 604 device_printf(sc->sc_dev, 605 "could not map status ring DMA memory\n"); 606 goto fail; 607 } 608 609 /* 610 * Allocate command DMA map. 611 */ 612 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 613 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 614 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 615 if (error != 0) { 616 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 617 goto fail; 618 } 619 620 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 621 if (error != 0) { 622 device_printf(sc->sc_dev, 623 "could not create command DMA map\n"); 624 goto fail; 625 } 626 627 /* 628 * Allocate headers DMA maps. 629 */ 630 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 631 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 632 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 633 if (error != 0) { 634 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 635 goto fail; 636 } 637 638 SLIST_INIT(&sc->free_shdr); 639 for (i = 0; i < IPW_NDATA; i++) { 640 shdr = &sc->shdr_list[i]; 641 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 642 if (error != 0) { 643 device_printf(sc->sc_dev, 644 "could not create header DMA map\n"); 645 goto fail; 646 } 647 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 648 } 649 650 /* 651 * Allocate tx buffers DMA maps. 652 */ 653 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 654 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 655 NULL, NULL, &sc->txbuf_dmat); 656 if (error != 0) { 657 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 658 goto fail; 659 } 660 661 SLIST_INIT(&sc->free_sbuf); 662 for (i = 0; i < IPW_NDATA; i++) { 663 sbuf = &sc->tx_sbuf_list[i]; 664 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 665 if (error != 0) { 666 device_printf(sc->sc_dev, 667 "could not create tx DMA map\n"); 668 goto fail; 669 } 670 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 671 } 672 673 /* 674 * Initialize tx ring. 675 */ 676 for (i = 0; i < IPW_NTBD; i++) { 677 sbd = &sc->stbd_list[i]; 678 sbd->bd = &sc->tbd_list[i]; 679 sbd->type = IPW_SBD_TYPE_NOASSOC; 680 } 681 682 /* 683 * Pre-allocate rx buffers and DMA maps. 684 */ 685 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 686 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 687 NULL, &sc->rxbuf_dmat); 688 if (error != 0) { 689 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 690 goto fail; 691 } 692 693 for (i = 0; i < IPW_NRBD; i++) { 694 sbd = &sc->srbd_list[i]; 695 sbuf = &sc->rx_sbuf_list[i]; 696 sbd->bd = &sc->rbd_list[i]; 697 698 sbuf->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 699 if (sbuf->m == NULL) { 700 device_printf(sc->sc_dev, 701 "could not allocate rx mbuf\n"); 702 error = ENOMEM; 703 goto fail; 704 } 705 706 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 707 if (error != 0) { 708 device_printf(sc->sc_dev, 709 "could not create rx DMA map\n"); 710 goto fail; 711 } 712 713 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 714 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 715 &physaddr, 0); 716 if (error != 0) { 717 device_printf(sc->sc_dev, 718 "could not map rx DMA memory\n"); 719 goto fail; 720 } 721 722 sbd->type = IPW_SBD_TYPE_DATA; 723 sbd->priv = sbuf; 724 sbd->bd->physaddr = htole32(physaddr); 725 sbd->bd->len = htole32(MCLBYTES); 726 } 727 728 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 729 730 return 0; 731 732 fail: ipw_release(sc); 733 return error; 734 } 735 736 static void 737 ipw_release(struct ipw_softc *sc) 738 { 739 struct ipw_soft_buf *sbuf; 740 int i; 741 742 if (sc->tbd_dmat != NULL) { 743 if (sc->stbd_list != NULL) { 744 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 745 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, 746 sc->tbd_map); 747 } 748 bus_dma_tag_destroy(sc->tbd_dmat); 749 } 750 751 if (sc->rbd_dmat != NULL) { 752 if (sc->rbd_list != NULL) { 753 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 754 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 755 sc->rbd_map); 756 } 757 bus_dma_tag_destroy(sc->rbd_dmat); 758 } 759 760 if (sc->status_dmat != NULL) { 761 if (sc->status_list != NULL) { 762 bus_dmamap_unload(sc->status_dmat, sc->status_map); 763 bus_dmamem_free(sc->status_dmat, sc->status_list, 764 sc->status_map); 765 } 766 bus_dma_tag_destroy(sc->status_dmat); 767 } 768 769 for (i = 0; i < IPW_NTBD; i++) 770 ipw_release_sbd(sc, &sc->stbd_list[i]); 771 772 if (sc->cmd_dmat != NULL) { 773 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 774 bus_dma_tag_destroy(sc->cmd_dmat); 775 } 776 777 if (sc->hdr_dmat != NULL) { 778 for (i = 0; i < IPW_NDATA; i++) 779 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 780 bus_dma_tag_destroy(sc->hdr_dmat); 781 } 782 783 if (sc->txbuf_dmat != NULL) { 784 for (i = 0; i < IPW_NDATA; i++) { 785 bus_dmamap_destroy(sc->txbuf_dmat, 786 sc->tx_sbuf_list[i].map); 787 } 788 bus_dma_tag_destroy(sc->txbuf_dmat); 789 } 790 791 if (sc->rxbuf_dmat != NULL) { 792 for (i = 0; i < IPW_NRBD; i++) { 793 sbuf = &sc->rx_sbuf_list[i]; 794 if (sbuf->m != NULL) { 795 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 796 BUS_DMASYNC_POSTREAD); 797 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 798 m_freem(sbuf->m); 799 } 800 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 801 } 802 bus_dma_tag_destroy(sc->rxbuf_dmat); 803 } 804 } 805 806 static int 807 ipw_shutdown(device_t dev) 808 { 809 struct ipw_softc *sc = device_get_softc(dev); 810 811 ipw_stop(sc); 812 813 return 0; 814 } 815 816 static int 817 ipw_suspend(device_t dev) 818 { 819 struct ipw_softc *sc = device_get_softc(dev); 820 821 ipw_stop(sc); 822 823 return 0; 824 } 825 826 static int 827 ipw_resume(device_t dev) 828 { 829 struct ipw_softc *sc = device_get_softc(dev); 830 struct ifnet *ifp = sc->sc_ifp; 831 832 pci_write_config(dev, 0x41, 0, 1); 833 834 if (ifp->if_flags & IFF_UP) 835 ipw_init(sc); 836 837 return 0; 838 } 839 840 static int 841 ipw_cvtrate(int ipwrate) 842 { 843 switch (ipwrate) { 844 case IPW_RATE_DS1: return 2; 845 case IPW_RATE_DS2: return 4; 846 case IPW_RATE_DS5: return 11; 847 case IPW_RATE_DS11: return 22; 848 } 849 return 0; 850 } 851 852 /* 853 * The firmware automatically adapts the transmit speed. We report its current 854 * value here. 855 */ 856 static void 857 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 858 { 859 struct ieee80211vap *vap = ifp->if_softc; 860 struct ieee80211com *ic = vap->iv_ic; 861 struct ipw_softc *sc = ic->ic_ifp->if_softc; 862 863 /* read current transmission rate from adapter */ 864 vap->iv_bss->ni_txrate = ipw_cvtrate( 865 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 866 ieee80211_media_status(ifp, imr); 867 } 868 869 static int 870 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 871 { 872 struct ipw_vap *ivp = IPW_VAP(vap); 873 struct ieee80211com *ic = vap->iv_ic; 874 struct ifnet *ifp = ic->ic_ifp; 875 struct ipw_softc *sc = ifp->if_softc; 876 enum ieee80211_state ostate; 877 878 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 879 ieee80211_state_name[vap->iv_state], 880 ieee80211_state_name[nstate], sc->flags)); 881 882 ostate = vap->iv_state; 883 IEEE80211_UNLOCK(ic); 884 885 switch (nstate) { 886 case IEEE80211_S_RUN: 887 if (ic->ic_opmode == IEEE80211_M_IBSS) { 888 /* 889 * XXX when joining an ibss network we are called 890 * with a SCAN -> RUN transition on scan complete. 891 * Use that to call ipw_assoc. On completing the 892 * join we are then called again with an AUTH -> RUN 893 * transition and we want to do nothing. This is 894 * all totally bogus and needs to be redone. 895 */ 896 if (ostate == IEEE80211_S_SCAN) 897 ipw_assoc(ic, vap); 898 } 899 break; 900 901 case IEEE80211_S_INIT: 902 if (sc->flags & IPW_FLAG_ASSOCIATED) 903 ipw_disassoc(ic, vap); 904 break; 905 906 case IEEE80211_S_AUTH: 907 /* 908 * Move to ASSOC state after the ipw_assoc() call. Firmware 909 * takes care of authentication, after the call we'll receive 910 * only an assoc response which would otherwise be discared 911 * if we are still in AUTH state. 912 */ 913 nstate = IEEE80211_S_ASSOC; 914 ipw_assoc(ic, vap); 915 break; 916 917 case IEEE80211_S_ASSOC: 918 /* 919 * If we are not transitioning from AUTH then resend the 920 * association request. 921 */ 922 if (ostate != IEEE80211_S_AUTH) 923 ipw_assoc(ic, vap); 924 break; 925 926 default: 927 break; 928 } 929 IEEE80211_LOCK(ic); 930 return ivp->newstate(vap, nstate, arg); 931 } 932 933 /* 934 * Read 16 bits at address 'addr' from the serial EEPROM. 935 */ 936 static uint16_t 937 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 938 { 939 uint32_t tmp; 940 uint16_t val; 941 int n; 942 943 /* clock C once before the first command */ 944 IPW_EEPROM_CTL(sc, 0); 945 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 946 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 947 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 948 949 /* write start bit (1) */ 950 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 951 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 952 953 /* write READ opcode (10) */ 954 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 955 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 956 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 957 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 958 959 /* write address A7-A0 */ 960 for (n = 7; n >= 0; n--) { 961 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 962 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 963 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 964 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 965 } 966 967 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 968 969 /* read data Q15-Q0 */ 970 val = 0; 971 for (n = 15; n >= 0; n--) { 972 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 973 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 974 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 975 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 976 } 977 978 IPW_EEPROM_CTL(sc, 0); 979 980 /* clear Chip Select and clock C */ 981 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 982 IPW_EEPROM_CTL(sc, 0); 983 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 984 985 return le16toh(val); 986 } 987 988 static void 989 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 990 { 991 struct ipw_cmd *cmd; 992 993 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 994 995 cmd = mtod(sbuf->m, struct ipw_cmd *); 996 997 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 998 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 999 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 1000 le32toh(cmd->status))); 1001 1002 sc->flags &= ~IPW_FLAG_BUSY; 1003 wakeup(sc); 1004 } 1005 1006 static void 1007 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1008 { 1009 #define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1010 struct ifnet *ifp = sc->sc_ifp; 1011 struct ieee80211com *ic = ifp->if_l2com; 1012 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1013 uint32_t state; 1014 1015 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1016 1017 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1018 1019 switch (state) { 1020 case IPW_STATE_ASSOCIATED: 1021 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1022 IEEESTATE(vap), sc->flags)); 1023 /* XXX suppress state change in case the fw auto-associates */ 1024 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1025 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1026 IEEESTATE(vap), sc->flags)); 1027 break; 1028 } 1029 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1030 sc->flags |= IPW_FLAG_ASSOCIATED; 1031 break; 1032 1033 case IPW_STATE_SCANNING: 1034 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1035 IEEESTATE(vap), sc->flags)); 1036 /* 1037 * NB: Check driver state for association on assoc 1038 * loss as the firmware will immediately start to 1039 * scan and we would treat it as a beacon miss if 1040 * we checked the 802.11 layer state. 1041 */ 1042 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1043 IPW_UNLOCK(sc); 1044 /* XXX probably need to issue disassoc to fw */ 1045 ieee80211_beacon_miss(ic); 1046 IPW_LOCK(sc); 1047 } 1048 break; 1049 1050 case IPW_STATE_SCAN_COMPLETE: 1051 /* 1052 * XXX For some reason scan requests generate scan 1053 * started + scan done events before any traffic is 1054 * received (e.g. probe response frames). We work 1055 * around this by marking the HACK flag and skipping 1056 * the first scan complete event. 1057 */ 1058 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1059 IEEESTATE(vap), sc->flags)); 1060 if (sc->flags & IPW_FLAG_HACK) { 1061 sc->flags &= ~IPW_FLAG_HACK; 1062 break; 1063 } 1064 if (sc->flags & IPW_FLAG_SCANNING) { 1065 IPW_UNLOCK(sc); 1066 ieee80211_scan_done(vap); 1067 IPW_LOCK(sc); 1068 sc->flags &= ~IPW_FLAG_SCANNING; 1069 sc->sc_scan_timer = 0; 1070 } 1071 break; 1072 1073 case IPW_STATE_ASSOCIATION_LOST: 1074 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1075 IEEESTATE(vap), sc->flags)); 1076 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1077 if (vap->iv_state == IEEE80211_S_RUN) { 1078 IPW_UNLOCK(sc); 1079 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1080 IPW_LOCK(sc); 1081 } 1082 break; 1083 1084 case IPW_STATE_DISABLED: 1085 /* XXX? is this right? */ 1086 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1087 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1088 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1089 IEEESTATE(vap), sc->flags)); 1090 break; 1091 1092 case IPW_STATE_RADIO_DISABLED: 1093 device_printf(sc->sc_dev, "radio turned off\n"); 1094 ieee80211_notify_radio(ic, 0); 1095 ipw_stop_locked(sc); 1096 /* XXX start polling thread to detect radio on */ 1097 break; 1098 1099 default: 1100 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1101 __func__, state, IEEESTATE(vap), sc->flags)); 1102 break; 1103 } 1104 #undef IEEESTATE 1105 } 1106 1107 /* 1108 * Set driver state for current channel. 1109 */ 1110 static void 1111 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1112 { 1113 struct ifnet *ifp = sc->sc_ifp; 1114 struct ieee80211com *ic = ifp->if_l2com; 1115 1116 ic->ic_curchan = chan; 1117 ieee80211_radiotap_chan_change(ic); 1118 } 1119 1120 /* 1121 * XXX: Hack to set the current channel to the value advertised in beacons or 1122 * probe responses. Only used during AP detection. 1123 */ 1124 static void 1125 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1126 { 1127 struct ifnet *ifp = sc->sc_ifp; 1128 struct ieee80211com *ic = ifp->if_l2com; 1129 struct ieee80211_channel *c; 1130 struct ieee80211_frame *wh; 1131 uint8_t subtype; 1132 uint8_t *frm, *efrm; 1133 1134 wh = mtod(m, struct ieee80211_frame *); 1135 1136 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1137 return; 1138 1139 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1140 1141 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1142 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1143 return; 1144 1145 /* XXX use ieee80211_parse_beacon */ 1146 frm = (uint8_t *)(wh + 1); 1147 efrm = mtod(m, uint8_t *) + m->m_len; 1148 1149 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1150 while (frm < efrm) { 1151 if (*frm == IEEE80211_ELEMID_DSPARMS) 1152 #if IEEE80211_CHAN_MAX < 255 1153 if (frm[2] <= IEEE80211_CHAN_MAX) 1154 #endif 1155 { 1156 DPRINTF(("Fixing channel to %d\n", frm[2])); 1157 c = ieee80211_find_channel(ic, 1158 ieee80211_ieee2mhz(frm[2], 0), 1159 IEEE80211_CHAN_B); 1160 if (c == NULL) 1161 c = &ic->ic_channels[0]; 1162 ipw_setcurchan(sc, c); 1163 } 1164 1165 frm += frm[1] + 2; 1166 } 1167 } 1168 1169 static void 1170 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1171 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1172 { 1173 struct ifnet *ifp = sc->sc_ifp; 1174 struct ieee80211com *ic = ifp->if_l2com; 1175 struct mbuf *mnew, *m; 1176 struct ieee80211_node *ni; 1177 bus_addr_t physaddr; 1178 int error; 1179 int8_t rssi, nf; 1180 1181 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1182 status->rssi)); 1183 1184 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1185 le32toh(status->len) > MCLBYTES) 1186 return; 1187 1188 /* 1189 * Try to allocate a new mbuf for this ring element and load it before 1190 * processing the current mbuf. If the ring element cannot be loaded, 1191 * drop the received packet and reuse the old mbuf. In the unlikely 1192 * case that the old mbuf can't be reloaded either, explicitly panic. 1193 */ 1194 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1195 if (mnew == NULL) { 1196 ifp->if_ierrors++; 1197 return; 1198 } 1199 1200 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1201 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1202 1203 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1204 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1205 if (error != 0) { 1206 m_freem(mnew); 1207 1208 /* try to reload the old mbuf */ 1209 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1210 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1211 &physaddr, 0); 1212 if (error != 0) { 1213 /* very unlikely that it will fail... */ 1214 panic("%s: could not load old rx mbuf", 1215 device_get_name(sc->sc_dev)); 1216 } 1217 ifp->if_ierrors++; 1218 return; 1219 } 1220 1221 /* 1222 * New mbuf successfully loaded, update Rx ring and continue 1223 * processing. 1224 */ 1225 m = sbuf->m; 1226 sbuf->m = mnew; 1227 sbd->bd->physaddr = htole32(physaddr); 1228 1229 /* finalize mbuf */ 1230 m->m_pkthdr.rcvif = ifp; 1231 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1232 1233 rssi = status->rssi + IPW_RSSI_TO_DBM; 1234 nf = -95; 1235 if (ieee80211_radiotap_active(ic)) { 1236 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1237 1238 tap->wr_flags = 0; 1239 tap->wr_antsignal = rssi; 1240 tap->wr_antnoise = nf; 1241 } 1242 1243 if (sc->flags & IPW_FLAG_SCANNING) 1244 ipw_fix_channel(sc, m); 1245 1246 IPW_UNLOCK(sc); 1247 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1248 if (ni != NULL) { 1249 (void) ieee80211_input(ni, m, rssi - nf, nf); 1250 ieee80211_free_node(ni); 1251 } else 1252 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1253 IPW_LOCK(sc); 1254 1255 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1256 } 1257 1258 static void 1259 ipw_rx_intr(struct ipw_softc *sc) 1260 { 1261 struct ipw_status *status; 1262 struct ipw_soft_bd *sbd; 1263 struct ipw_soft_buf *sbuf; 1264 uint32_t r, i; 1265 1266 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1267 return; 1268 1269 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1270 1271 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1272 1273 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1274 status = &sc->status_list[i]; 1275 sbd = &sc->srbd_list[i]; 1276 sbuf = sbd->priv; 1277 1278 switch (le16toh(status->code) & 0xf) { 1279 case IPW_STATUS_CODE_COMMAND: 1280 ipw_rx_cmd_intr(sc, sbuf); 1281 break; 1282 1283 case IPW_STATUS_CODE_NEWSTATE: 1284 ipw_rx_newstate_intr(sc, sbuf); 1285 break; 1286 1287 case IPW_STATUS_CODE_DATA_802_3: 1288 case IPW_STATUS_CODE_DATA_802_11: 1289 ipw_rx_data_intr(sc, status, sbd, sbuf); 1290 break; 1291 1292 case IPW_STATUS_CODE_NOTIFICATION: 1293 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1294 le32toh(status->len), status->flags)); 1295 /* XXX maybe drive state machine AUTH->ASSOC? */ 1296 break; 1297 1298 default: 1299 device_printf(sc->sc_dev, "unexpected status code %u\n", 1300 le16toh(status->code)); 1301 } 1302 1303 /* firmware was killed, stop processing received frames */ 1304 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1305 return; 1306 1307 sbd->bd->flags = 0; 1308 } 1309 1310 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1311 1312 /* kick the firmware */ 1313 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1314 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1315 } 1316 1317 static void 1318 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1319 { 1320 struct ipw_soft_hdr *shdr; 1321 struct ipw_soft_buf *sbuf; 1322 1323 switch (sbd->type) { 1324 case IPW_SBD_TYPE_COMMAND: 1325 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1326 BUS_DMASYNC_POSTWRITE); 1327 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1328 break; 1329 1330 case IPW_SBD_TYPE_HEADER: 1331 shdr = sbd->priv; 1332 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1333 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1334 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1335 break; 1336 1337 case IPW_SBD_TYPE_DATA: 1338 sbuf = sbd->priv; 1339 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1340 BUS_DMASYNC_POSTWRITE); 1341 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1342 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1343 1344 if (sbuf->m->m_flags & M_TXCB) 1345 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1346 m_freem(sbuf->m); 1347 ieee80211_free_node(sbuf->ni); 1348 1349 sc->sc_tx_timer = 0; 1350 break; 1351 } 1352 1353 sbd->type = IPW_SBD_TYPE_NOASSOC; 1354 } 1355 1356 static void 1357 ipw_tx_intr(struct ipw_softc *sc) 1358 { 1359 struct ifnet *ifp = sc->sc_ifp; 1360 struct ipw_soft_bd *sbd; 1361 uint32_t r, i; 1362 1363 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1364 return; 1365 1366 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1367 1368 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1369 sbd = &sc->stbd_list[i]; 1370 1371 if (sbd->type == IPW_SBD_TYPE_DATA) 1372 ifp->if_opackets++; 1373 1374 ipw_release_sbd(sc, sbd); 1375 sc->txfree++; 1376 } 1377 1378 /* remember what the firmware has processed */ 1379 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1380 1381 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1382 ipw_start_locked(ifp); 1383 } 1384 1385 static void 1386 ipw_fatal_error_intr(struct ipw_softc *sc) 1387 { 1388 struct ifnet *ifp = sc->sc_ifp; 1389 struct ieee80211com *ic = ifp->if_l2com; 1390 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1391 1392 device_printf(sc->sc_dev, "firmware error\n"); 1393 if (vap != NULL) { 1394 IPW_UNLOCK(sc); 1395 ieee80211_cancel_scan(vap); 1396 IPW_LOCK(sc); 1397 } 1398 ieee80211_runtask(ic, &sc->sc_init_task); 1399 } 1400 1401 static void 1402 ipw_intr(void *arg) 1403 { 1404 struct ipw_softc *sc = arg; 1405 uint32_t r; 1406 1407 IPW_LOCK(sc); 1408 1409 r = CSR_READ_4(sc, IPW_CSR_INTR); 1410 if (r == 0 || r == 0xffffffff) 1411 goto done; 1412 1413 /* disable interrupts */ 1414 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1415 1416 /* acknowledge all interrupts */ 1417 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1418 1419 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1420 ipw_fatal_error_intr(sc); 1421 goto done; 1422 } 1423 1424 if (r & IPW_INTR_FW_INIT_DONE) 1425 wakeup(sc); 1426 1427 if (r & IPW_INTR_RX_TRANSFER) 1428 ipw_rx_intr(sc); 1429 1430 if (r & IPW_INTR_TX_TRANSFER) 1431 ipw_tx_intr(sc); 1432 1433 /* re-enable interrupts */ 1434 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1435 done: 1436 IPW_UNLOCK(sc); 1437 } 1438 1439 static void 1440 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1441 { 1442 if (error != 0) 1443 return; 1444 1445 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1446 1447 *(bus_addr_t *)arg = segs[0].ds_addr; 1448 } 1449 1450 static const char * 1451 ipw_cmdname(int cmd) 1452 { 1453 #define N(a) (sizeof(a) / sizeof(a[0])) 1454 static const struct { 1455 int cmd; 1456 const char *name; 1457 } cmds[] = { 1458 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1459 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1460 { IPW_CMD_DISABLE, "DISABLE" }, 1461 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1462 { IPW_CMD_ENABLE, "ENABLE" }, 1463 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1464 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1465 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1466 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1467 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1468 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1469 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1470 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1471 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1472 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1473 { IPW_CMD_SET_MODE, "SET_MODE" }, 1474 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1475 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1476 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1477 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1478 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1479 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1480 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1481 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1482 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1483 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1484 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1485 1486 }; 1487 static char buf[12]; 1488 int i; 1489 1490 for (i = 0; i < N(cmds); i++) 1491 if (cmds[i].cmd == cmd) 1492 return cmds[i].name; 1493 snprintf(buf, sizeof(buf), "%u", cmd); 1494 return buf; 1495 #undef N 1496 } 1497 1498 /* 1499 * Send a command to the firmware and wait for the acknowledgement. 1500 */ 1501 static int 1502 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1503 { 1504 struct ipw_soft_bd *sbd; 1505 bus_addr_t physaddr; 1506 int error; 1507 1508 IPW_LOCK_ASSERT(sc); 1509 1510 if (sc->flags & IPW_FLAG_BUSY) { 1511 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1512 __func__, ipw_cmdname(type)); 1513 return EAGAIN; 1514 } 1515 sc->flags |= IPW_FLAG_BUSY; 1516 1517 sbd = &sc->stbd_list[sc->txcur]; 1518 1519 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1520 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1521 if (error != 0) { 1522 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1523 sc->flags &= ~IPW_FLAG_BUSY; 1524 return error; 1525 } 1526 1527 sc->cmd.type = htole32(type); 1528 sc->cmd.subtype = 0; 1529 sc->cmd.len = htole32(len); 1530 sc->cmd.seq = 0; 1531 memcpy(sc->cmd.data, data, len); 1532 1533 sbd->type = IPW_SBD_TYPE_COMMAND; 1534 sbd->bd->physaddr = htole32(physaddr); 1535 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1536 sbd->bd->nfrag = 1; 1537 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1538 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1539 1540 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1541 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1542 1543 #ifdef IPW_DEBUG 1544 if (ipw_debug >= 4) { 1545 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1546 0, 0, len); 1547 /* Print the data buffer in the higher debug level */ 1548 if (ipw_debug >= 9 && len > 0) { 1549 printf(" data: 0x"); 1550 for (int i = 1; i <= len; i++) 1551 printf("%1D", (u_char *)data + len - i, ""); 1552 } 1553 printf("\n"); 1554 } 1555 #endif 1556 1557 /* kick firmware */ 1558 sc->txfree--; 1559 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1560 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1561 1562 /* wait at most one second for command to complete */ 1563 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1564 if (error != 0) { 1565 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1566 __func__, ipw_cmdname(type), error); 1567 sc->flags &= ~IPW_FLAG_BUSY; 1568 return (error); 1569 } 1570 return (0); 1571 } 1572 1573 static int 1574 ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1575 { 1576 struct ipw_softc *sc = ifp->if_softc; 1577 struct ieee80211com *ic = ifp->if_l2com; 1578 struct ieee80211vap *vap = ni->ni_vap; 1579 struct ieee80211_frame *wh; 1580 struct ipw_soft_bd *sbd; 1581 struct ipw_soft_hdr *shdr; 1582 struct ipw_soft_buf *sbuf; 1583 struct ieee80211_key *k; 1584 struct mbuf *mnew; 1585 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1586 bus_addr_t physaddr; 1587 int nsegs, error, i; 1588 1589 wh = mtod(m0, struct ieee80211_frame *); 1590 1591 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1592 k = ieee80211_crypto_encap(ni, m0); 1593 if (k == NULL) { 1594 m_freem(m0); 1595 return ENOBUFS; 1596 } 1597 /* packet header may have moved, reset our local pointer */ 1598 wh = mtod(m0, struct ieee80211_frame *); 1599 } 1600 1601 if (ieee80211_radiotap_active_vap(vap)) { 1602 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1603 1604 tap->wt_flags = 0; 1605 1606 ieee80211_radiotap_tx(vap, m0); 1607 } 1608 1609 shdr = SLIST_FIRST(&sc->free_shdr); 1610 sbuf = SLIST_FIRST(&sc->free_sbuf); 1611 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1612 1613 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1614 shdr->hdr.subtype = 0; 1615 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0; 1616 shdr->hdr.encrypt = 0; 1617 shdr->hdr.keyidx = 0; 1618 shdr->hdr.keysz = 0; 1619 shdr->hdr.fragmentsz = 0; 1620 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1621 if (ic->ic_opmode == IEEE80211_M_STA) 1622 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1623 else 1624 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1625 1626 /* trim IEEE802.11 header */ 1627 m_adj(m0, sizeof (struct ieee80211_frame)); 1628 1629 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1630 &nsegs, 0); 1631 if (error != 0 && error != EFBIG) { 1632 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1633 error); 1634 m_freem(m0); 1635 return error; 1636 } 1637 if (error != 0) { 1638 mnew = m_defrag(m0, M_DONTWAIT); 1639 if (mnew == NULL) { 1640 device_printf(sc->sc_dev, 1641 "could not defragment mbuf\n"); 1642 m_freem(m0); 1643 return ENOBUFS; 1644 } 1645 m0 = mnew; 1646 1647 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1648 segs, &nsegs, 0); 1649 if (error != 0) { 1650 device_printf(sc->sc_dev, 1651 "could not map mbuf (error %d)\n", error); 1652 m_freem(m0); 1653 return error; 1654 } 1655 } 1656 1657 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1658 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1659 if (error != 0) { 1660 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1661 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1662 m_freem(m0); 1663 return error; 1664 } 1665 1666 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1667 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1668 1669 sbd = &sc->stbd_list[sc->txcur]; 1670 sbd->type = IPW_SBD_TYPE_HEADER; 1671 sbd->priv = shdr; 1672 sbd->bd->physaddr = htole32(physaddr); 1673 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1674 sbd->bd->nfrag = 1 + nsegs; 1675 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1676 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1677 1678 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1679 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1680 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1681 ":")); 1682 1683 sc->txfree--; 1684 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1685 1686 sbuf->m = m0; 1687 sbuf->ni = ni; 1688 1689 for (i = 0; i < nsegs; i++) { 1690 sbd = &sc->stbd_list[sc->txcur]; 1691 1692 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1693 sbd->bd->len = htole32(segs[i].ds_len); 1694 sbd->bd->nfrag = 0; 1695 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1696 if (i == nsegs - 1) { 1697 sbd->type = IPW_SBD_TYPE_DATA; 1698 sbd->priv = sbuf; 1699 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1700 } else { 1701 sbd->type = IPW_SBD_TYPE_NOASSOC; 1702 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1703 } 1704 1705 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1706 1707 sc->txfree--; 1708 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1709 } 1710 1711 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1712 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1713 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1714 1715 /* kick firmware */ 1716 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1717 1718 return 0; 1719 } 1720 1721 static int 1722 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1723 const struct ieee80211_bpf_params *params) 1724 { 1725 /* no support; just discard */ 1726 m_freem(m); 1727 ieee80211_free_node(ni); 1728 return 0; 1729 } 1730 1731 static void 1732 ipw_start(struct ifnet *ifp) 1733 { 1734 struct ipw_softc *sc = ifp->if_softc; 1735 1736 IPW_LOCK(sc); 1737 ipw_start_locked(ifp); 1738 IPW_UNLOCK(sc); 1739 } 1740 1741 static void 1742 ipw_start_locked(struct ifnet *ifp) 1743 { 1744 struct ipw_softc *sc = ifp->if_softc; 1745 struct ieee80211_node *ni; 1746 struct mbuf *m; 1747 1748 IPW_LOCK_ASSERT(sc); 1749 1750 for (;;) { 1751 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1752 if (m == NULL) 1753 break; 1754 if (sc->txfree < 1 + IPW_MAX_NSEG) { 1755 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1756 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1757 break; 1758 } 1759 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1760 if (ipw_tx_start(ifp, m, ni) != 0) { 1761 ieee80211_free_node(ni); 1762 ifp->if_oerrors++; 1763 break; 1764 } 1765 /* start watchdog timer */ 1766 sc->sc_tx_timer = 5; 1767 } 1768 } 1769 1770 static void 1771 ipw_watchdog(void *arg) 1772 { 1773 struct ipw_softc *sc = arg; 1774 struct ifnet *ifp = sc->sc_ifp; 1775 struct ieee80211com *ic = ifp->if_l2com; 1776 1777 IPW_LOCK_ASSERT(sc); 1778 1779 if (sc->sc_tx_timer > 0) { 1780 if (--sc->sc_tx_timer == 0) { 1781 if_printf(ifp, "device timeout\n"); 1782 ifp->if_oerrors++; 1783 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1784 } 1785 } 1786 if (sc->sc_scan_timer > 0) { 1787 if (--sc->sc_scan_timer == 0) { 1788 DPRINTFN(3, ("Scan timeout\n")); 1789 /* End the scan */ 1790 if (sc->flags & IPW_FLAG_SCANNING) { 1791 IPW_UNLOCK(sc); 1792 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1793 IPW_LOCK(sc); 1794 sc->flags &= ~IPW_FLAG_SCANNING; 1795 } 1796 } 1797 } 1798 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1799 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1800 } 1801 1802 static int 1803 ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1804 { 1805 struct ipw_softc *sc = ifp->if_softc; 1806 struct ieee80211com *ic = ifp->if_l2com; 1807 struct ifreq *ifr = (struct ifreq *) data; 1808 int error = 0, startall = 0; 1809 1810 switch (cmd) { 1811 case SIOCSIFFLAGS: 1812 IPW_LOCK(sc); 1813 if (ifp->if_flags & IFF_UP) { 1814 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1815 ipw_init_locked(sc); 1816 startall = 1; 1817 } 1818 } else { 1819 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1820 ipw_stop_locked(sc); 1821 } 1822 IPW_UNLOCK(sc); 1823 if (startall) 1824 ieee80211_start_all(ic); 1825 break; 1826 case SIOCGIFMEDIA: 1827 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1828 break; 1829 case SIOCGIFADDR: 1830 error = ether_ioctl(ifp, cmd, data); 1831 break; 1832 default: 1833 error = EINVAL; 1834 break; 1835 } 1836 return error; 1837 } 1838 1839 static void 1840 ipw_stop_master(struct ipw_softc *sc) 1841 { 1842 uint32_t tmp; 1843 int ntries; 1844 1845 /* disable interrupts */ 1846 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1847 1848 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1849 for (ntries = 0; ntries < 50; ntries++) { 1850 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1851 break; 1852 DELAY(10); 1853 } 1854 if (ntries == 50) 1855 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1856 1857 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1858 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1859 1860 /* Clear all flags except the following */ 1861 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1862 } 1863 1864 static int 1865 ipw_reset(struct ipw_softc *sc) 1866 { 1867 uint32_t tmp; 1868 int ntries; 1869 1870 ipw_stop_master(sc); 1871 1872 /* move adapter to D0 state */ 1873 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1874 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1875 1876 /* wait for clock stabilization */ 1877 for (ntries = 0; ntries < 1000; ntries++) { 1878 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1879 break; 1880 DELAY(200); 1881 } 1882 if (ntries == 1000) 1883 return EIO; 1884 1885 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1886 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1887 1888 DELAY(10); 1889 1890 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1891 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1892 1893 return 0; 1894 } 1895 1896 static int 1897 ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1898 { 1899 int ms = hz < 1000 ? 1 : hz/10; 1900 int i, error; 1901 1902 for (i = 0; i < 100; i++) { 1903 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1904 return 0; 1905 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1906 if (error == 0 || error != EWOULDBLOCK) 1907 return 0; 1908 } 1909 DPRINTF(("%s: timeout waiting for %s\n", 1910 __func__, waitfor ? "disable" : "enable")); 1911 return ETIMEDOUT; 1912 } 1913 1914 static int 1915 ipw_enable(struct ipw_softc *sc) 1916 { 1917 int error; 1918 1919 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1920 DPRINTF(("Enable adapter\n")); 1921 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1922 if (error != 0) 1923 return error; 1924 error = ipw_waitfordisable(sc, 0); 1925 if (error != 0) 1926 return error; 1927 sc->flags |= IPW_FLAG_ENABLED; 1928 } 1929 return 0; 1930 } 1931 1932 static int 1933 ipw_disable(struct ipw_softc *sc) 1934 { 1935 int error; 1936 1937 if (sc->flags & IPW_FLAG_ENABLED) { 1938 DPRINTF(("Disable adapter\n")); 1939 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1940 if (error != 0) 1941 return error; 1942 error = ipw_waitfordisable(sc, 1); 1943 if (error != 0) 1944 return error; 1945 sc->flags &= ~IPW_FLAG_ENABLED; 1946 } 1947 return 0; 1948 } 1949 1950 /* 1951 * Upload the microcode to the device. 1952 */ 1953 static int 1954 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1955 { 1956 int ntries; 1957 1958 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1959 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1960 1961 MEM_WRITE_2(sc, 0x220000, 0x0703); 1962 MEM_WRITE_2(sc, 0x220000, 0x0707); 1963 1964 MEM_WRITE_1(sc, 0x210014, 0x72); 1965 MEM_WRITE_1(sc, 0x210014, 0x72); 1966 1967 MEM_WRITE_1(sc, 0x210000, 0x40); 1968 MEM_WRITE_1(sc, 0x210000, 0x00); 1969 MEM_WRITE_1(sc, 0x210000, 0x40); 1970 1971 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1972 1973 MEM_WRITE_1(sc, 0x210000, 0x00); 1974 MEM_WRITE_1(sc, 0x210000, 0x00); 1975 MEM_WRITE_1(sc, 0x210000, 0x80); 1976 1977 MEM_WRITE_2(sc, 0x220000, 0x0703); 1978 MEM_WRITE_2(sc, 0x220000, 0x0707); 1979 1980 MEM_WRITE_1(sc, 0x210014, 0x72); 1981 MEM_WRITE_1(sc, 0x210014, 0x72); 1982 1983 MEM_WRITE_1(sc, 0x210000, 0x00); 1984 MEM_WRITE_1(sc, 0x210000, 0x80); 1985 1986 for (ntries = 0; ntries < 10; ntries++) { 1987 if (MEM_READ_1(sc, 0x210000) & 1) 1988 break; 1989 DELAY(10); 1990 } 1991 if (ntries == 10) { 1992 device_printf(sc->sc_dev, 1993 "timeout waiting for ucode to initialize\n"); 1994 return EIO; 1995 } 1996 1997 MEM_WRITE_4(sc, 0x3000e0, 0); 1998 1999 return 0; 2000 } 2001 2002 /* set of macros to handle unaligned little endian data in firmware image */ 2003 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2004 #define GETLE16(p) ((p)[0] | (p)[1] << 8) 2005 static int 2006 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 2007 { 2008 const uint8_t *p, *end; 2009 uint32_t tmp, dst; 2010 uint16_t len; 2011 int error; 2012 2013 p = fw; 2014 end = fw + size; 2015 while (p < end) { 2016 dst = GETLE32(p); p += 4; 2017 len = GETLE16(p); p += 2; 2018 2019 ipw_write_mem_1(sc, dst, p, len); 2020 p += len; 2021 } 2022 2023 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 2024 IPW_IO_LED_OFF); 2025 2026 /* enable interrupts */ 2027 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 2028 2029 /* kick the firmware */ 2030 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 2031 2032 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 2033 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 2034 2035 /* wait at most one second for firmware initialization to complete */ 2036 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 2037 device_printf(sc->sc_dev, "timeout waiting for firmware " 2038 "initialization to complete\n"); 2039 return error; 2040 } 2041 2042 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2043 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2044 IPW_IO_GPIO3_MASK); 2045 2046 return 0; 2047 } 2048 2049 static int 2050 ipw_setwepkeys(struct ipw_softc *sc) 2051 { 2052 struct ifnet *ifp = sc->sc_ifp; 2053 struct ieee80211com *ic = ifp->if_l2com; 2054 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2055 struct ipw_wep_key wepkey; 2056 struct ieee80211_key *wk; 2057 int error, i; 2058 2059 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2060 wk = &vap->iv_nw_keys[i]; 2061 2062 if (wk->wk_cipher == NULL || 2063 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2064 continue; 2065 2066 wepkey.idx = i; 2067 wepkey.len = wk->wk_keylen; 2068 memset(wepkey.key, 0, sizeof wepkey.key); 2069 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2070 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2071 wepkey.len)); 2072 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2073 sizeof wepkey); 2074 if (error != 0) 2075 return error; 2076 } 2077 return 0; 2078 } 2079 2080 static int 2081 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2082 { 2083 struct ipw_wpa_ie wpaie; 2084 2085 memset(&wpaie, 0, sizeof(wpaie)); 2086 wpaie.len = htole32(ielen); 2087 /* XXX verify length */ 2088 memcpy(&wpaie.ie, ie, ielen); 2089 DPRINTF(("Setting WPA IE\n")); 2090 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2091 } 2092 2093 static int 2094 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2095 { 2096 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2097 2098 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2099 DPRINTF(("Setting mandatory BSSID to null\n")); 2100 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2101 } else { 2102 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2103 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2104 bssid, IEEE80211_ADDR_LEN); 2105 } 2106 } 2107 2108 static int 2109 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2110 { 2111 if (ssidlen == 0) { 2112 /* 2113 * A bug in the firmware breaks the ``don't associate'' 2114 * bit in the scan options command. To compensate for 2115 * this install a bogus ssid when no ssid is specified 2116 * so the firmware won't try to associate. 2117 */ 2118 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2119 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2120 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2121 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2122 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2123 "\x3c\x3d", IEEE80211_NWID_LEN); 2124 } else { 2125 #ifdef IPW_DEBUG 2126 if (ipw_debug > 0) { 2127 printf("Setting ESSID to "); 2128 ieee80211_print_essid(ssid, ssidlen); 2129 printf("\n"); 2130 } 2131 #endif 2132 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2133 } 2134 } 2135 2136 static int 2137 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2138 { 2139 struct ipw_scan_options opts; 2140 2141 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2142 opts.channels = htole32(chanmask); 2143 opts.flags = htole32(flags); 2144 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2145 } 2146 2147 static int 2148 ipw_scan(struct ipw_softc *sc) 2149 { 2150 uint32_t params; 2151 int error; 2152 2153 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2154 2155 if (sc->flags & IPW_FLAG_SCANNING) 2156 return (EBUSY); 2157 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2158 2159 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2160 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2161 if (error != 0) 2162 goto done; 2163 2164 /* 2165 * Setup null/bogus ssid so firmware doesn't use any previous 2166 * ssid to try and associate. This is because the ``don't 2167 * associate'' option bit is broken (sigh). 2168 */ 2169 error = ipw_setssid(sc, NULL, 0); 2170 if (error != 0) 2171 goto done; 2172 2173 /* 2174 * NB: the adapter may be disabled on association lost; 2175 * if so just re-enable it to kick off scanning. 2176 */ 2177 DPRINTF(("Starting scan\n")); 2178 sc->sc_scan_timer = 3; 2179 if (sc->flags & IPW_FLAG_ENABLED) { 2180 params = 0; /* XXX? */ 2181 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2182 ¶ms, sizeof(params)); 2183 } else 2184 error = ipw_enable(sc); 2185 done: 2186 if (error != 0) { 2187 DPRINTF(("Scan failed\n")); 2188 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2189 } 2190 return (error); 2191 } 2192 2193 static int 2194 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2195 { 2196 struct ifnet *ifp = sc->sc_ifp; 2197 struct ieee80211com *ic = ifp->if_l2com; 2198 uint32_t data; 2199 int error; 2200 2201 data = htole32(ieee80211_chan2ieee(ic, chan)); 2202 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2203 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2204 if (error == 0) 2205 ipw_setcurchan(sc, chan); 2206 return error; 2207 } 2208 2209 static void 2210 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2211 { 2212 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2213 struct ipw_softc *sc = ifp->if_softc; 2214 struct ieee80211_node *ni = vap->iv_bss; 2215 struct ipw_security security; 2216 uint32_t data; 2217 int error; 2218 2219 IPW_LOCK(sc); 2220 error = ipw_disable(sc); 2221 if (error != 0) 2222 goto done; 2223 2224 memset(&security, 0, sizeof security); 2225 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2226 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2227 security.ciphers = htole32(IPW_CIPHER_NONE); 2228 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2229 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2230 sizeof security); 2231 if (error != 0) 2232 goto done; 2233 2234 data = htole32(vap->iv_rtsthreshold); 2235 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2236 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2237 if (error != 0) 2238 goto done; 2239 2240 data = htole32(vap->iv_fragthreshold); 2241 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2242 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2243 if (error != 0) 2244 goto done; 2245 2246 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2247 error = ipw_setwepkeys(sc); 2248 if (error != 0) 2249 goto done; 2250 2251 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2252 data = htole32(vap->iv_def_txkey); 2253 DPRINTF(("Setting wep tx key index to %u\n", 2254 le32toh(data))); 2255 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2256 sizeof data); 2257 if (error != 0) 2258 goto done; 2259 } 2260 } 2261 2262 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2263 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2264 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2265 if (error != 0) 2266 goto done; 2267 2268 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2269 if (error != 0) 2270 goto done; 2271 2272 error = ipw_setbssid(sc, ni->ni_bssid); 2273 if (error != 0) 2274 goto done; 2275 2276 if (vap->iv_appie_wpa != NULL) { 2277 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2278 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2279 if (error != 0) 2280 goto done; 2281 } 2282 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2283 error = ipw_setchannel(sc, ni->ni_chan); 2284 if (error != 0) 2285 goto done; 2286 } 2287 2288 /* lock scan to ap's channel and enable associate */ 2289 error = ipw_setscanopts(sc, 2290 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2291 if (error != 0) 2292 goto done; 2293 2294 error = ipw_enable(sc); /* finally, enable adapter */ 2295 if (error == 0) 2296 sc->flags |= IPW_FLAG_ASSOCIATING; 2297 done: 2298 IPW_UNLOCK(sc); 2299 } 2300 2301 static void 2302 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2303 { 2304 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2305 struct ieee80211_node *ni = vap->iv_bss; 2306 struct ipw_softc *sc = ifp->if_softc; 2307 2308 IPW_LOCK(sc); 2309 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2310 /* 2311 * NB: don't try to do this if ipw_stop_master has 2312 * shutdown the firmware and disabled interrupts. 2313 */ 2314 if (sc->flags & IPW_FLAG_FW_INITED) { 2315 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2316 /* 2317 * NB: firmware currently ignores bssid parameter, but 2318 * supply it in case this changes (follow linux driver). 2319 */ 2320 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2321 ni->ni_bssid, IEEE80211_ADDR_LEN); 2322 } 2323 IPW_UNLOCK(sc); 2324 } 2325 2326 /* 2327 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2328 * It is called on firmware panics or on watchdog timeouts. 2329 */ 2330 static void 2331 ipw_init_task(void *context, int pending) 2332 { 2333 ipw_init(context); 2334 } 2335 2336 static void 2337 ipw_init(void *priv) 2338 { 2339 struct ipw_softc *sc = priv; 2340 struct ifnet *ifp = sc->sc_ifp; 2341 struct ieee80211com *ic = ifp->if_l2com; 2342 2343 IPW_LOCK(sc); 2344 ipw_init_locked(sc); 2345 IPW_UNLOCK(sc); 2346 2347 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2348 ieee80211_start_all(ic); /* start all vap's */ 2349 } 2350 2351 static void 2352 ipw_init_locked(struct ipw_softc *sc) 2353 { 2354 struct ifnet *ifp = sc->sc_ifp; 2355 struct ieee80211com *ic = ifp->if_l2com; 2356 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2357 const struct firmware *fp; 2358 const struct ipw_firmware_hdr *hdr; 2359 const char *fw; 2360 2361 IPW_LOCK_ASSERT(sc); 2362 2363 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2364 ieee80211_state_name[vap->iv_state], sc->flags)); 2365 2366 /* 2367 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2368 * when loading the firmware and we don't want to be called during this 2369 * operation. 2370 */ 2371 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2372 return; 2373 sc->flags |= IPW_FLAG_INIT_LOCKED; 2374 2375 ipw_stop_locked(sc); 2376 2377 if (ipw_reset(sc) != 0) { 2378 device_printf(sc->sc_dev, "could not reset adapter\n"); 2379 goto fail; 2380 } 2381 2382 if (sc->sc_firmware == NULL) { 2383 device_printf(sc->sc_dev, "no firmware\n"); 2384 goto fail; 2385 } 2386 /* NB: consistency already checked on load */ 2387 fp = sc->sc_firmware; 2388 hdr = (const struct ipw_firmware_hdr *)fp->data; 2389 2390 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2391 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2392 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2393 device_printf(sc->sc_dev, "could not load microcode\n"); 2394 goto fail; 2395 } 2396 2397 ipw_stop_master(sc); 2398 2399 /* 2400 * Setup tx, rx and status rings. 2401 */ 2402 sc->txold = IPW_NTBD - 1; 2403 sc->txcur = 0; 2404 sc->txfree = IPW_NTBD - 2; 2405 sc->rxcur = IPW_NRBD - 1; 2406 2407 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2408 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2409 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2410 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2411 2412 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2413 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2414 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2415 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2416 2417 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2418 2419 fw = (const char *)fp->data + sizeof *hdr; 2420 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2421 device_printf(sc->sc_dev, "could not load firmware\n"); 2422 goto fail; 2423 } 2424 2425 sc->flags |= IPW_FLAG_FW_INITED; 2426 2427 /* retrieve information tables base addresses */ 2428 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2429 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2430 2431 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2432 2433 if (ipw_config(sc) != 0) { 2434 device_printf(sc->sc_dev, "device configuration failed\n"); 2435 goto fail; 2436 } 2437 2438 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2439 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2440 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2441 2442 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2443 return; 2444 2445 fail: 2446 ipw_stop_locked(sc); 2447 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2448 } 2449 2450 static int 2451 ipw_config(struct ipw_softc *sc) 2452 { 2453 struct ifnet *ifp = sc->sc_ifp; 2454 struct ieee80211com *ic = ifp->if_l2com; 2455 struct ipw_configuration config; 2456 uint32_t data; 2457 int error; 2458 2459 error = ipw_disable(sc); 2460 if (error != 0) 2461 return error; 2462 2463 switch (ic->ic_opmode) { 2464 case IEEE80211_M_STA: 2465 case IEEE80211_M_HOSTAP: 2466 case IEEE80211_M_WDS: /* XXX */ 2467 data = htole32(IPW_MODE_BSS); 2468 break; 2469 case IEEE80211_M_IBSS: 2470 case IEEE80211_M_AHDEMO: 2471 data = htole32(IPW_MODE_IBSS); 2472 break; 2473 case IEEE80211_M_MONITOR: 2474 data = htole32(IPW_MODE_MONITOR); 2475 break; 2476 default: 2477 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2478 return EINVAL; 2479 } 2480 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2481 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2482 if (error != 0) 2483 return error; 2484 2485 if (ic->ic_opmode == IEEE80211_M_IBSS || 2486 ic->ic_opmode == IEEE80211_M_MONITOR) { 2487 error = ipw_setchannel(sc, ic->ic_curchan); 2488 if (error != 0) 2489 return error; 2490 } 2491 2492 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2493 return ipw_enable(sc); 2494 2495 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2496 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2497 if (ic->ic_opmode == IEEE80211_M_IBSS) 2498 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2499 if (ifp->if_flags & IFF_PROMISC) 2500 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2501 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2502 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2503 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2504 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2505 if (error != 0) 2506 return error; 2507 2508 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2509 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2510 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2511 if (error != 0) 2512 return error; 2513 2514 /* Use the same rate set */ 2515 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2516 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2517 if (error != 0) 2518 return error; 2519 2520 /* Use the same rate set */ 2521 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2522 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2523 if (error != 0) 2524 return error; 2525 2526 data = htole32(IPW_POWER_MODE_CAM); 2527 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2528 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2529 if (error != 0) 2530 return error; 2531 2532 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2533 data = htole32(32); /* default value */ 2534 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2535 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2536 sizeof data); 2537 if (error != 0) 2538 return error; 2539 } 2540 2541 return 0; 2542 } 2543 2544 static void 2545 ipw_stop(void *priv) 2546 { 2547 struct ipw_softc *sc = priv; 2548 2549 IPW_LOCK(sc); 2550 ipw_stop_locked(sc); 2551 IPW_UNLOCK(sc); 2552 } 2553 2554 static void 2555 ipw_stop_locked(struct ipw_softc *sc) 2556 { 2557 struct ifnet *ifp = sc->sc_ifp; 2558 int i; 2559 2560 IPW_LOCK_ASSERT(sc); 2561 2562 callout_stop(&sc->sc_wdtimer); 2563 ipw_stop_master(sc); 2564 2565 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2566 2567 /* 2568 * Release tx buffers. 2569 */ 2570 for (i = 0; i < IPW_NTBD; i++) 2571 ipw_release_sbd(sc, &sc->stbd_list[i]); 2572 2573 sc->sc_tx_timer = 0; 2574 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2575 } 2576 2577 static int 2578 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2579 { 2580 struct ipw_softc *sc = arg1; 2581 uint32_t i, size, buf[256]; 2582 2583 memset(buf, 0, sizeof buf); 2584 2585 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2586 return SYSCTL_OUT(req, buf, sizeof buf); 2587 2588 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2589 2590 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2591 for (i = 1; i < size; i++) 2592 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2593 2594 return SYSCTL_OUT(req, buf, size); 2595 } 2596 2597 static int 2598 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2599 { 2600 struct ipw_softc *sc = arg1; 2601 int val; 2602 2603 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2604 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2605 2606 return SYSCTL_OUT(req, &val, sizeof val); 2607 } 2608 2609 static uint32_t 2610 ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2611 { 2612 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2613 } 2614 2615 static void 2616 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2617 { 2618 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2619 } 2620 2621 #if 0 2622 static int 2623 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2624 { 2625 uint32_t addr, info; 2626 uint16_t count, size; 2627 uint32_t total; 2628 2629 /* addr[4] + count[2] + size[2] */ 2630 addr = MEM_READ_4(sc, sc->table2_base + off); 2631 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2632 2633 count = info >> 16; 2634 size = info & 0xffff; 2635 total = count * size; 2636 2637 if (total > *len) { 2638 *len = total; 2639 return EINVAL; 2640 } 2641 2642 *len = total; 2643 ipw_read_mem_1(sc, addr, buf, total); 2644 2645 return 0; 2646 } 2647 2648 static void 2649 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2650 bus_size_t count) 2651 { 2652 for (; count > 0; offset++, datap++, count--) { 2653 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2654 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2655 } 2656 } 2657 #endif 2658 2659 static void 2660 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2661 bus_size_t count) 2662 { 2663 for (; count > 0; offset++, datap++, count--) { 2664 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2665 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2666 } 2667 } 2668 2669 static void 2670 ipw_scan_start(struct ieee80211com *ic) 2671 { 2672 struct ifnet *ifp = ic->ic_ifp; 2673 struct ipw_softc *sc = ifp->if_softc; 2674 2675 IPW_LOCK(sc); 2676 ipw_scan(sc); 2677 IPW_UNLOCK(sc); 2678 } 2679 2680 static void 2681 ipw_set_channel(struct ieee80211com *ic) 2682 { 2683 struct ifnet *ifp = ic->ic_ifp; 2684 struct ipw_softc *sc = ifp->if_softc; 2685 2686 IPW_LOCK(sc); 2687 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2688 ipw_disable(sc); 2689 ipw_setchannel(sc, ic->ic_curchan); 2690 ipw_enable(sc); 2691 } 2692 IPW_UNLOCK(sc); 2693 } 2694 2695 static void 2696 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2697 { 2698 /* NB: all channels are scanned at once */ 2699 } 2700 2701 static void 2702 ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2703 { 2704 /* NB: don't try to abort scan; wait for firmware to finish */ 2705 } 2706 2707 static void 2708 ipw_scan_end(struct ieee80211com *ic) 2709 { 2710 struct ifnet *ifp = ic->ic_ifp; 2711 struct ipw_softc *sc = ifp->if_softc; 2712 2713 IPW_LOCK(sc); 2714 sc->flags &= ~IPW_FLAG_SCANNING; 2715 IPW_UNLOCK(sc); 2716 } 2717