if_ipw.c revision 206765
1/* $FreeBSD: head/sys/dev/ipw/if_ipw.c 206765 2010-04-17 18:16:14Z bschmidt $ */ 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: head/sys/dev/ipw/if_ipw.c 206765 2010-04-17 18:16:14Z bschmidt $"); 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) 87int ipw_debug = 0; 88SYSCTL_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 94MODULE_DEPEND(ipw, pci, 1, 1, 1); 95MODULE_DEPEND(ipw, wlan, 1, 1, 1); 96MODULE_DEPEND(ipw, firmware, 1, 1, 1); 97 98struct ipw_ident { 99 uint16_t vendor; 100 uint16_t device; 101 const char *name; 102}; 103 104static const struct ipw_ident ipw_ident_table[] = { 105 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" }, 106 107 { 0, 0, NULL } 108}; 109 110static 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]); 114static void ipw_vap_delete(struct ieee80211vap *); 115static int ipw_dma_alloc(struct ipw_softc *); 116static void ipw_release(struct ipw_softc *); 117static void ipw_media_status(struct ifnet *, struct ifmediareq *); 118static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int); 119static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t); 120static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *); 121static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *); 122static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *, 123 struct ipw_soft_bd *, struct ipw_soft_buf *); 124static void ipw_rx_intr(struct ipw_softc *); 125static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *); 126static void ipw_tx_intr(struct ipw_softc *); 127static void ipw_intr(void *); 128static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int); 129static const char * ipw_cmdname(int); 130static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t); 131static int ipw_tx_start(struct ifnet *, struct mbuf *, 132 struct ieee80211_node *); 133static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *, 134 const struct ieee80211_bpf_params *); 135static void ipw_start(struct ifnet *); 136static void ipw_start_locked(struct ifnet *); 137static void ipw_watchdog(void *); 138static int ipw_ioctl(struct ifnet *, u_long, caddr_t); 139static void ipw_stop_master(struct ipw_softc *); 140static int ipw_enable(struct ipw_softc *); 141static int ipw_disable(struct ipw_softc *); 142static int ipw_reset(struct ipw_softc *); 143static int ipw_load_ucode(struct ipw_softc *, const char *, int); 144static int ipw_load_firmware(struct ipw_softc *, const char *, int); 145static int ipw_config(struct ipw_softc *); 146static void ipw_assoc(struct ieee80211com *, struct ieee80211vap *); 147static void ipw_disassoc(struct ieee80211com *, struct ieee80211vap *); 148static void ipw_init_task(void *, int); 149static void ipw_init(void *); 150static void ipw_init_locked(struct ipw_softc *); 151static void ipw_stop(void *); 152static void ipw_stop_locked(struct ipw_softc *); 153static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS); 154static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS); 155static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t); 156static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t); 157#if 0 158static int ipw_read_table2(struct ipw_softc *, uint32_t, void *, 159 uint32_t *); 160static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *, 161 bus_size_t); 162#endif 163static void ipw_write_mem_1(struct ipw_softc *, bus_size_t, 164 const uint8_t *, bus_size_t); 165static int ipw_scan(struct ipw_softc *); 166static void ipw_scan_start(struct ieee80211com *); 167static void ipw_scan_end(struct ieee80211com *); 168static void ipw_set_channel(struct ieee80211com *); 169static void ipw_scan_curchan(struct ieee80211_scan_state *, 170 unsigned long maxdwell); 171static void ipw_scan_mindwell(struct ieee80211_scan_state *); 172 173static int ipw_probe(device_t); 174static int ipw_attach(device_t); 175static int ipw_detach(device_t); 176static int ipw_shutdown(device_t); 177static int ipw_suspend(device_t); 178static int ipw_resume(device_t); 179 180static 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 192static driver_t ipw_driver = { 193 "ipw", 194 ipw_methods, 195 sizeof (struct ipw_softc) 196}; 197 198static devclass_t ipw_devclass; 199 200DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, 0, 0); 201 202static int 203ipw_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 220static int 221ipw_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, IFQ_MAXLEN); 293 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 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; 382fail4: 383 if_free(ifp); 384fail3: 385 ipw_release(sc); 386fail2: 387 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 388fail1: 389 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 390fail: 391 mtx_destroy(&sc->sc_mtx); 392 return ENXIO; 393} 394 395static int 396ipw_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 428static struct ieee80211vap * 429ipw_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 510static void 511ipw_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 519static int 520ipw_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 732fail: ipw_release(sc); 733 return error; 734} 735 736static void 737ipw_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 806static int 807ipw_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 816static int 817ipw_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 826static int 827ipw_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 840static int 841ipw_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 */ 856static void 857ipw_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 869static int 870ipw_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 */ 936static uint16_t 937ipw_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 988static void 989ipw_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 1006static void 1007ipw_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 /* XXX probably need to issue disassoc to fw */ 1044 ieee80211_beacon_miss(ic); 1045 } 1046 break; 1047 1048 case IPW_STATE_SCAN_COMPLETE: 1049 /* 1050 * XXX For some reason scan requests generate scan 1051 * started + scan done events before any traffic is 1052 * received (e.g. probe response frames). We work 1053 * around this by marking the HACK flag and skipping 1054 * the first scan complete event. 1055 */ 1056 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1057 IEEESTATE(vap), sc->flags)); 1058 if (sc->flags & IPW_FLAG_HACK) { 1059 sc->flags &= ~IPW_FLAG_HACK; 1060 break; 1061 } 1062 if (sc->flags & IPW_FLAG_SCANNING) { 1063 ieee80211_scan_done(vap); 1064 sc->flags &= ~IPW_FLAG_SCANNING; 1065 sc->sc_scan_timer = 0; 1066 } 1067 break; 1068 1069 case IPW_STATE_ASSOCIATION_LOST: 1070 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1071 IEEESTATE(vap), sc->flags)); 1072 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1073 if (vap->iv_state == IEEE80211_S_RUN) 1074 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1075 break; 1076 1077 case IPW_STATE_DISABLED: 1078 /* XXX? is this right? */ 1079 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1080 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1081 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1082 IEEESTATE(vap), sc->flags)); 1083 break; 1084 1085 case IPW_STATE_RADIO_DISABLED: 1086 device_printf(sc->sc_dev, "radio turned off\n"); 1087 ieee80211_notify_radio(ic, 0); 1088 ipw_stop_locked(sc); 1089 /* XXX start polling thread to detect radio on */ 1090 break; 1091 1092 default: 1093 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1094 __func__, state, IEEESTATE(vap), sc->flags)); 1095 break; 1096 } 1097#undef IEEESTATE 1098} 1099 1100/* 1101 * Set driver state for current channel. 1102 */ 1103static void 1104ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1105{ 1106 struct ifnet *ifp = sc->sc_ifp; 1107 struct ieee80211com *ic = ifp->if_l2com; 1108 1109 ic->ic_curchan = chan; 1110 ieee80211_radiotap_chan_change(ic); 1111} 1112 1113/* 1114 * XXX: Hack to set the current channel to the value advertised in beacons or 1115 * probe responses. Only used during AP detection. 1116 */ 1117static void 1118ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1119{ 1120 struct ifnet *ifp = sc->sc_ifp; 1121 struct ieee80211com *ic = ifp->if_l2com; 1122 struct ieee80211_channel *c; 1123 struct ieee80211_frame *wh; 1124 uint8_t subtype; 1125 uint8_t *frm, *efrm; 1126 1127 wh = mtod(m, struct ieee80211_frame *); 1128 1129 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1130 return; 1131 1132 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1133 1134 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1135 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1136 return; 1137 1138 /* XXX use ieee80211_parse_beacon */ 1139 frm = (uint8_t *)(wh + 1); 1140 efrm = mtod(m, uint8_t *) + m->m_len; 1141 1142 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1143 while (frm < efrm) { 1144 if (*frm == IEEE80211_ELEMID_DSPARMS) 1145#if IEEE80211_CHAN_MAX < 255 1146 if (frm[2] <= IEEE80211_CHAN_MAX) 1147#endif 1148 { 1149 DPRINTF(("Fixing channel to %d\n", frm[2])); 1150 c = ieee80211_find_channel(ic, 1151 ieee80211_ieee2mhz(frm[2], 0), 1152 IEEE80211_CHAN_B); 1153 if (c == NULL) 1154 c = &ic->ic_channels[0]; 1155 ipw_setcurchan(sc, c); 1156 } 1157 1158 frm += frm[1] + 2; 1159 } 1160} 1161 1162static void 1163ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1164 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1165{ 1166 struct ifnet *ifp = sc->sc_ifp; 1167 struct ieee80211com *ic = ifp->if_l2com; 1168 struct mbuf *mnew, *m; 1169 struct ieee80211_node *ni; 1170 bus_addr_t physaddr; 1171 int error; 1172 int8_t rssi, nf; 1173 IPW_LOCK_DECL; 1174 1175 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1176 status->rssi)); 1177 1178 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1179 le32toh(status->len) > MCLBYTES) 1180 return; 1181 1182 /* 1183 * Try to allocate a new mbuf for this ring element and load it before 1184 * processing the current mbuf. If the ring element cannot be loaded, 1185 * drop the received packet and reuse the old mbuf. In the unlikely 1186 * case that the old mbuf can't be reloaded either, explicitly panic. 1187 */ 1188 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1189 if (mnew == NULL) { 1190 ifp->if_ierrors++; 1191 return; 1192 } 1193 1194 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1195 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1196 1197 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1198 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1199 if (error != 0) { 1200 m_freem(mnew); 1201 1202 /* try to reload the old mbuf */ 1203 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1204 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1205 &physaddr, 0); 1206 if (error != 0) { 1207 /* very unlikely that it will fail... */ 1208 panic("%s: could not load old rx mbuf", 1209 device_get_name(sc->sc_dev)); 1210 } 1211 ifp->if_ierrors++; 1212 return; 1213 } 1214 1215 /* 1216 * New mbuf successfully loaded, update Rx ring and continue 1217 * processing. 1218 */ 1219 m = sbuf->m; 1220 sbuf->m = mnew; 1221 sbd->bd->physaddr = htole32(physaddr); 1222 1223 /* finalize mbuf */ 1224 m->m_pkthdr.rcvif = ifp; 1225 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1226 1227 rssi = status->rssi + IPW_RSSI_TO_DBM; 1228 nf = -95; 1229 if (ieee80211_radiotap_active(ic)) { 1230 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1231 1232 tap->wr_flags = 0; 1233 tap->wr_antsignal = rssi; 1234 tap->wr_antnoise = nf; 1235 } 1236 1237 if (sc->flags & IPW_FLAG_SCANNING) 1238 ipw_fix_channel(sc, m); 1239 1240 IPW_UNLOCK(sc); 1241 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1242 if (ni != NULL) { 1243 (void) ieee80211_input(ni, m, rssi - nf, nf); 1244 ieee80211_free_node(ni); 1245 } else 1246 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1247 IPW_LOCK(sc); 1248 1249 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1250} 1251 1252static void 1253ipw_rx_intr(struct ipw_softc *sc) 1254{ 1255 struct ipw_status *status; 1256 struct ipw_soft_bd *sbd; 1257 struct ipw_soft_buf *sbuf; 1258 uint32_t r, i; 1259 1260 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1261 return; 1262 1263 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1264 1265 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1266 1267 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1268 status = &sc->status_list[i]; 1269 sbd = &sc->srbd_list[i]; 1270 sbuf = sbd->priv; 1271 1272 switch (le16toh(status->code) & 0xf) { 1273 case IPW_STATUS_CODE_COMMAND: 1274 ipw_rx_cmd_intr(sc, sbuf); 1275 break; 1276 1277 case IPW_STATUS_CODE_NEWSTATE: 1278 ipw_rx_newstate_intr(sc, sbuf); 1279 break; 1280 1281 case IPW_STATUS_CODE_DATA_802_3: 1282 case IPW_STATUS_CODE_DATA_802_11: 1283 ipw_rx_data_intr(sc, status, sbd, sbuf); 1284 break; 1285 1286 case IPW_STATUS_CODE_NOTIFICATION: 1287 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1288 le32toh(status->len), status->flags)); 1289 /* XXX maybe drive state machine AUTH->ASSOC? */ 1290 break; 1291 1292 default: 1293 device_printf(sc->sc_dev, "unexpected status code %u\n", 1294 le16toh(status->code)); 1295 } 1296 1297 /* firmware was killed, stop processing received frames */ 1298 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1299 return; 1300 1301 sbd->bd->flags = 0; 1302 } 1303 1304 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1305 1306 /* kick the firmware */ 1307 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1308 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1309} 1310 1311static void 1312ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1313{ 1314 struct ipw_soft_hdr *shdr; 1315 struct ipw_soft_buf *sbuf; 1316 1317 switch (sbd->type) { 1318 case IPW_SBD_TYPE_COMMAND: 1319 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1320 BUS_DMASYNC_POSTWRITE); 1321 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1322 break; 1323 1324 case IPW_SBD_TYPE_HEADER: 1325 shdr = sbd->priv; 1326 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1327 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1328 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1329 break; 1330 1331 case IPW_SBD_TYPE_DATA: 1332 sbuf = sbd->priv; 1333 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1334 BUS_DMASYNC_POSTWRITE); 1335 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1336 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1337 1338 if (sbuf->m->m_flags & M_TXCB) 1339 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1340 m_freem(sbuf->m); 1341 ieee80211_free_node(sbuf->ni); 1342 1343 sc->sc_tx_timer = 0; 1344 break; 1345 } 1346 1347 sbd->type = IPW_SBD_TYPE_NOASSOC; 1348} 1349 1350static void 1351ipw_tx_intr(struct ipw_softc *sc) 1352{ 1353 struct ifnet *ifp = sc->sc_ifp; 1354 struct ipw_soft_bd *sbd; 1355 uint32_t r, i; 1356 1357 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1358 return; 1359 1360 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1361 1362 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1363 sbd = &sc->stbd_list[i]; 1364 1365 if (sbd->type == IPW_SBD_TYPE_DATA) 1366 ifp->if_opackets++; 1367 1368 ipw_release_sbd(sc, sbd); 1369 sc->txfree++; 1370 } 1371 1372 /* remember what the firmware has processed */ 1373 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1374 1375 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1376 ipw_start_locked(ifp); 1377} 1378 1379static void 1380ipw_fatal_error_intr(struct ipw_softc *sc) 1381{ 1382 struct ifnet *ifp = sc->sc_ifp; 1383 struct ieee80211com *ic = ifp->if_l2com; 1384 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1385 1386 device_printf(sc->sc_dev, "firmware error\n"); 1387 if (vap != NULL) 1388 ieee80211_cancel_scan(vap); 1389 ieee80211_runtask(ic, &sc->sc_init_task); 1390} 1391 1392static void 1393ipw_intr(void *arg) 1394{ 1395 struct ipw_softc *sc = arg; 1396 uint32_t r; 1397 IPW_LOCK_DECL; 1398 1399 IPW_LOCK(sc); 1400 1401 r = CSR_READ_4(sc, IPW_CSR_INTR); 1402 if (r == 0 || r == 0xffffffff) 1403 goto done; 1404 1405 /* disable interrupts */ 1406 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1407 1408 /* acknowledge all interrupts */ 1409 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1410 1411 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1412 ipw_fatal_error_intr(sc); 1413 goto done; 1414 } 1415 1416 if (r & IPW_INTR_FW_INIT_DONE) 1417 wakeup(sc); 1418 1419 if (r & IPW_INTR_RX_TRANSFER) 1420 ipw_rx_intr(sc); 1421 1422 if (r & IPW_INTR_TX_TRANSFER) 1423 ipw_tx_intr(sc); 1424 1425 /* re-enable interrupts */ 1426 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1427done: 1428 IPW_UNLOCK(sc); 1429} 1430 1431static void 1432ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1433{ 1434 if (error != 0) 1435 return; 1436 1437 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1438 1439 *(bus_addr_t *)arg = segs[0].ds_addr; 1440} 1441 1442static const char * 1443ipw_cmdname(int cmd) 1444{ 1445#define N(a) (sizeof(a) / sizeof(a[0])) 1446 static const struct { 1447 int cmd; 1448 const char *name; 1449 } cmds[] = { 1450 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1451 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1452 { IPW_CMD_DISABLE, "DISABLE" }, 1453 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1454 { IPW_CMD_ENABLE, "ENABLE" }, 1455 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1456 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1457 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1458 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1459 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1460 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1461 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1462 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1463 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1464 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1465 { IPW_CMD_SET_MODE, "SET_MODE" }, 1466 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1467 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1468 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1469 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1470 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1471 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1472 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1473 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1474 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1475 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1476 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1477 1478 }; 1479 static char buf[12]; 1480 int i; 1481 1482 for (i = 0; i < N(cmds); i++) 1483 if (cmds[i].cmd == cmd) 1484 return cmds[i].name; 1485 snprintf(buf, sizeof(buf), "%u", cmd); 1486 return buf; 1487#undef N 1488} 1489 1490/* 1491 * Send a command to the firmware and wait for the acknowledgement. 1492 */ 1493static int 1494ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1495{ 1496 struct ipw_soft_bd *sbd; 1497 bus_addr_t physaddr; 1498 int error; 1499 1500 IPW_LOCK_ASSERT(sc); 1501 1502 if (sc->flags & IPW_FLAG_BUSY) { 1503 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1504 __func__, ipw_cmdname(type)); 1505 return EAGAIN; 1506 } 1507 sc->flags |= IPW_FLAG_BUSY; 1508 1509 sbd = &sc->stbd_list[sc->txcur]; 1510 1511 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1512 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1513 if (error != 0) { 1514 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1515 sc->flags &= ~IPW_FLAG_BUSY; 1516 return error; 1517 } 1518 1519 sc->cmd.type = htole32(type); 1520 sc->cmd.subtype = 0; 1521 sc->cmd.len = htole32(len); 1522 sc->cmd.seq = 0; 1523 memcpy(sc->cmd.data, data, len); 1524 1525 sbd->type = IPW_SBD_TYPE_COMMAND; 1526 sbd->bd->physaddr = htole32(physaddr); 1527 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1528 sbd->bd->nfrag = 1; 1529 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1530 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1531 1532 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1533 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1534 1535#ifdef IPW_DEBUG 1536 if (ipw_debug >= 4) { 1537 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1538 0, 0, len); 1539 /* Print the data buffer in the higher debug level */ 1540 if (ipw_debug >= 9 && len > 0) { 1541 printf(" data: 0x"); 1542 for (int i = 1; i <= len; i++) 1543 printf("%1D", (u_char *)data + len - i, ""); 1544 } 1545 printf("\n"); 1546 } 1547#endif 1548 1549 /* kick firmware */ 1550 sc->txfree--; 1551 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1552 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1553 1554 /* wait at most one second for command to complete */ 1555 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1556 if (error != 0) { 1557 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1558 __func__, ipw_cmdname(type), error); 1559 sc->flags &= ~IPW_FLAG_BUSY; 1560 return (error); 1561 } 1562 return (0); 1563} 1564 1565static int 1566ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1567{ 1568 struct ipw_softc *sc = ifp->if_softc; 1569 struct ieee80211com *ic = ifp->if_l2com; 1570 struct ieee80211vap *vap = ni->ni_vap; 1571 struct ieee80211_frame *wh; 1572 struct ipw_soft_bd *sbd; 1573 struct ipw_soft_hdr *shdr; 1574 struct ipw_soft_buf *sbuf; 1575 struct ieee80211_key *k; 1576 struct mbuf *mnew; 1577 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1578 bus_addr_t physaddr; 1579 int nsegs, error, i; 1580 1581 wh = mtod(m0, struct ieee80211_frame *); 1582 1583 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1584 k = ieee80211_crypto_encap(ni, m0); 1585 if (k == NULL) { 1586 m_freem(m0); 1587 return ENOBUFS; 1588 } 1589 /* packet header may have moved, reset our local pointer */ 1590 wh = mtod(m0, struct ieee80211_frame *); 1591 } 1592 1593 if (ieee80211_radiotap_active_vap(vap)) { 1594 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1595 1596 tap->wt_flags = 0; 1597 1598 ieee80211_radiotap_tx(vap, m0); 1599 } 1600 1601 shdr = SLIST_FIRST(&sc->free_shdr); 1602 sbuf = SLIST_FIRST(&sc->free_sbuf); 1603 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1604 1605 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1606 shdr->hdr.subtype = 0; 1607 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0; 1608 shdr->hdr.encrypt = 0; 1609 shdr->hdr.keyidx = 0; 1610 shdr->hdr.keysz = 0; 1611 shdr->hdr.fragmentsz = 0; 1612 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1613 if (ic->ic_opmode == IEEE80211_M_STA) 1614 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1615 else 1616 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1617 1618 /* trim IEEE802.11 header */ 1619 m_adj(m0, sizeof (struct ieee80211_frame)); 1620 1621 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1622 &nsegs, 0); 1623 if (error != 0 && error != EFBIG) { 1624 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1625 error); 1626 m_freem(m0); 1627 return error; 1628 } 1629 if (error != 0) { 1630 mnew = m_defrag(m0, M_DONTWAIT); 1631 if (mnew == NULL) { 1632 device_printf(sc->sc_dev, 1633 "could not defragment mbuf\n"); 1634 m_freem(m0); 1635 return ENOBUFS; 1636 } 1637 m0 = mnew; 1638 1639 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1640 segs, &nsegs, 0); 1641 if (error != 0) { 1642 device_printf(sc->sc_dev, 1643 "could not map mbuf (error %d)\n", error); 1644 m_freem(m0); 1645 return error; 1646 } 1647 } 1648 1649 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1650 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1651 if (error != 0) { 1652 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1653 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1654 m_freem(m0); 1655 return error; 1656 } 1657 1658 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1659 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1660 1661 sbd = &sc->stbd_list[sc->txcur]; 1662 sbd->type = IPW_SBD_TYPE_HEADER; 1663 sbd->priv = shdr; 1664 sbd->bd->physaddr = htole32(physaddr); 1665 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1666 sbd->bd->nfrag = 1 + nsegs; 1667 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1668 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1669 1670 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1671 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1672 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1673 ":")); 1674 1675 sc->txfree--; 1676 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1677 1678 sbuf->m = m0; 1679 sbuf->ni = ni; 1680 1681 for (i = 0; i < nsegs; i++) { 1682 sbd = &sc->stbd_list[sc->txcur]; 1683 1684 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1685 sbd->bd->len = htole32(segs[i].ds_len); 1686 sbd->bd->nfrag = 0; 1687 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1688 if (i == nsegs - 1) { 1689 sbd->type = IPW_SBD_TYPE_DATA; 1690 sbd->priv = sbuf; 1691 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1692 } else { 1693 sbd->type = IPW_SBD_TYPE_NOASSOC; 1694 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1695 } 1696 1697 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1698 1699 sc->txfree--; 1700 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1701 } 1702 1703 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1704 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1705 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1706 1707 /* kick firmware */ 1708 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1709 1710 return 0; 1711} 1712 1713static int 1714ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1715 const struct ieee80211_bpf_params *params) 1716{ 1717 /* no support; just discard */ 1718 m_freem(m); 1719 ieee80211_free_node(ni); 1720 return 0; 1721} 1722 1723static void 1724ipw_start(struct ifnet *ifp) 1725{ 1726 struct ipw_softc *sc = ifp->if_softc; 1727 IPW_LOCK_DECL; 1728 1729 IPW_LOCK(sc); 1730 ipw_start_locked(ifp); 1731 IPW_UNLOCK(sc); 1732} 1733 1734static void 1735ipw_start_locked(struct ifnet *ifp) 1736{ 1737 struct ipw_softc *sc = ifp->if_softc; 1738 struct ieee80211_node *ni; 1739 struct mbuf *m; 1740 1741 IPW_LOCK_ASSERT(sc); 1742 1743 for (;;) { 1744 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1745 if (m == NULL) 1746 break; 1747 if (sc->txfree < 1 + IPW_MAX_NSEG) { 1748 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1749 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1750 break; 1751 } 1752 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1753 if (ipw_tx_start(ifp, m, ni) != 0) { 1754 ieee80211_free_node(ni); 1755 ifp->if_oerrors++; 1756 break; 1757 } 1758 /* start watchdog timer */ 1759 sc->sc_tx_timer = 5; 1760 } 1761} 1762 1763static void 1764ipw_watchdog(void *arg) 1765{ 1766 struct ipw_softc *sc = arg; 1767 struct ifnet *ifp = sc->sc_ifp; 1768 struct ieee80211com *ic = ifp->if_l2com; 1769 1770 IPW_LOCK_ASSERT(sc); 1771 1772 if (sc->sc_tx_timer > 0) { 1773 if (--sc->sc_tx_timer == 0) { 1774 if_printf(ifp, "device timeout\n"); 1775 ifp->if_oerrors++; 1776 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1777 } 1778 } 1779 if (sc->sc_scan_timer > 0) { 1780 if (--sc->sc_scan_timer == 0) { 1781 DPRINTFN(3, ("Scan timeout\n")); 1782 /* End the scan */ 1783 if (sc->flags & IPW_FLAG_SCANNING) { 1784 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1785 sc->flags &= ~IPW_FLAG_SCANNING; 1786 } 1787 } 1788 } 1789 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1790 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1791} 1792 1793static int 1794ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1795{ 1796 struct ipw_softc *sc = ifp->if_softc; 1797 struct ieee80211com *ic = ifp->if_l2com; 1798 struct ifreq *ifr = (struct ifreq *) data; 1799 int error = 0, startall = 0; 1800 IPW_LOCK_DECL; 1801 1802 switch (cmd) { 1803 case SIOCSIFFLAGS: 1804 IPW_LOCK(sc); 1805 if (ifp->if_flags & IFF_UP) { 1806 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1807 ipw_init_locked(sc); 1808 startall = 1; 1809 } 1810 } else { 1811 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1812 ipw_stop_locked(sc); 1813 } 1814 IPW_UNLOCK(sc); 1815 if (startall) 1816 ieee80211_start_all(ic); 1817 break; 1818 case SIOCGIFMEDIA: 1819 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1820 break; 1821 case SIOCGIFADDR: 1822 error = ether_ioctl(ifp, cmd, data); 1823 break; 1824 default: 1825 error = EINVAL; 1826 break; 1827 } 1828 return error; 1829} 1830 1831static void 1832ipw_stop_master(struct ipw_softc *sc) 1833{ 1834 uint32_t tmp; 1835 int ntries; 1836 1837 /* disable interrupts */ 1838 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1839 1840 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1841 for (ntries = 0; ntries < 50; ntries++) { 1842 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1843 break; 1844 DELAY(10); 1845 } 1846 if (ntries == 50) 1847 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1848 1849 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1850 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1851 1852 /* Clear all flags except the following */ 1853 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1854} 1855 1856static int 1857ipw_reset(struct ipw_softc *sc) 1858{ 1859 uint32_t tmp; 1860 int ntries; 1861 1862 ipw_stop_master(sc); 1863 1864 /* move adapter to D0 state */ 1865 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1866 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1867 1868 /* wait for clock stabilization */ 1869 for (ntries = 0; ntries < 1000; ntries++) { 1870 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1871 break; 1872 DELAY(200); 1873 } 1874 if (ntries == 1000) 1875 return EIO; 1876 1877 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1878 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1879 1880 DELAY(10); 1881 1882 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1883 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1884 1885 return 0; 1886} 1887 1888static int 1889ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1890{ 1891 int ms = hz < 1000 ? 1 : hz/10; 1892 int i, error; 1893 1894 for (i = 0; i < 100; i++) { 1895 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1896 return 0; 1897 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1898 if (error == 0 || error != EWOULDBLOCK) 1899 return 0; 1900 } 1901 DPRINTF(("%s: timeout waiting for %s\n", 1902 __func__, waitfor ? "disable" : "enable")); 1903 return ETIMEDOUT; 1904} 1905 1906static int 1907ipw_enable(struct ipw_softc *sc) 1908{ 1909 int error; 1910 1911 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1912 DPRINTF(("Enable adapter\n")); 1913 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1914 if (error != 0) 1915 return error; 1916 error = ipw_waitfordisable(sc, 0); 1917 if (error != 0) 1918 return error; 1919 sc->flags |= IPW_FLAG_ENABLED; 1920 } 1921 return 0; 1922} 1923 1924static int 1925ipw_disable(struct ipw_softc *sc) 1926{ 1927 int error; 1928 1929 if (sc->flags & IPW_FLAG_ENABLED) { 1930 DPRINTF(("Disable adapter\n")); 1931 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1932 if (error != 0) 1933 return error; 1934 error = ipw_waitfordisable(sc, 1); 1935 if (error != 0) 1936 return error; 1937 sc->flags &= ~IPW_FLAG_ENABLED; 1938 } 1939 return 0; 1940} 1941 1942/* 1943 * Upload the microcode to the device. 1944 */ 1945static int 1946ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1947{ 1948 int ntries; 1949 1950 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1951 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1952 1953 MEM_WRITE_2(sc, 0x220000, 0x0703); 1954 MEM_WRITE_2(sc, 0x220000, 0x0707); 1955 1956 MEM_WRITE_1(sc, 0x210014, 0x72); 1957 MEM_WRITE_1(sc, 0x210014, 0x72); 1958 1959 MEM_WRITE_1(sc, 0x210000, 0x40); 1960 MEM_WRITE_1(sc, 0x210000, 0x00); 1961 MEM_WRITE_1(sc, 0x210000, 0x40); 1962 1963 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1964 1965 MEM_WRITE_1(sc, 0x210000, 0x00); 1966 MEM_WRITE_1(sc, 0x210000, 0x00); 1967 MEM_WRITE_1(sc, 0x210000, 0x80); 1968 1969 MEM_WRITE_2(sc, 0x220000, 0x0703); 1970 MEM_WRITE_2(sc, 0x220000, 0x0707); 1971 1972 MEM_WRITE_1(sc, 0x210014, 0x72); 1973 MEM_WRITE_1(sc, 0x210014, 0x72); 1974 1975 MEM_WRITE_1(sc, 0x210000, 0x00); 1976 MEM_WRITE_1(sc, 0x210000, 0x80); 1977 1978 for (ntries = 0; ntries < 10; ntries++) { 1979 if (MEM_READ_1(sc, 0x210000) & 1) 1980 break; 1981 DELAY(10); 1982 } 1983 if (ntries == 10) { 1984 device_printf(sc->sc_dev, 1985 "timeout waiting for ucode to initialize\n"); 1986 return EIO; 1987 } 1988 1989 MEM_WRITE_4(sc, 0x3000e0, 0); 1990 1991 return 0; 1992} 1993 1994/* set of macros to handle unaligned little endian data in firmware image */ 1995#define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1996#define GETLE16(p) ((p)[0] | (p)[1] << 8) 1997static int 1998ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 1999{ 2000 const uint8_t *p, *end; 2001 uint32_t tmp, dst; 2002 uint16_t len; 2003 int error; 2004 2005 p = fw; 2006 end = fw + size; 2007 while (p < end) { 2008 dst = GETLE32(p); p += 4; 2009 len = GETLE16(p); p += 2; 2010 2011 ipw_write_mem_1(sc, dst, p, len); 2012 p += len; 2013 } 2014 2015 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 2016 IPW_IO_LED_OFF); 2017 2018 /* enable interrupts */ 2019 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 2020 2021 /* kick the firmware */ 2022 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 2023 2024 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 2025 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 2026 2027 /* wait at most one second for firmware initialization to complete */ 2028 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 2029 device_printf(sc->sc_dev, "timeout waiting for firmware " 2030 "initialization to complete\n"); 2031 return error; 2032 } 2033 2034 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2035 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2036 IPW_IO_GPIO3_MASK); 2037 2038 return 0; 2039} 2040 2041static int 2042ipw_setwepkeys(struct ipw_softc *sc) 2043{ 2044 struct ifnet *ifp = sc->sc_ifp; 2045 struct ieee80211com *ic = ifp->if_l2com; 2046 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2047 struct ipw_wep_key wepkey; 2048 struct ieee80211_key *wk; 2049 int error, i; 2050 2051 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2052 wk = &vap->iv_nw_keys[i]; 2053 2054 if (wk->wk_cipher == NULL || 2055 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2056 continue; 2057 2058 wepkey.idx = i; 2059 wepkey.len = wk->wk_keylen; 2060 memset(wepkey.key, 0, sizeof wepkey.key); 2061 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2062 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2063 wepkey.len)); 2064 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2065 sizeof wepkey); 2066 if (error != 0) 2067 return error; 2068 } 2069 return 0; 2070} 2071 2072static int 2073ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2074{ 2075 struct ipw_wpa_ie wpaie; 2076 2077 memset(&wpaie, 0, sizeof(wpaie)); 2078 wpaie.len = htole32(ielen); 2079 /* XXX verify length */ 2080 memcpy(&wpaie.ie, ie, ielen); 2081 DPRINTF(("Setting WPA IE\n")); 2082 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2083} 2084 2085static int 2086ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2087{ 2088 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2089 2090 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2091 DPRINTF(("Setting mandatory BSSID to null\n")); 2092 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2093 } else { 2094 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2095 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2096 bssid, IEEE80211_ADDR_LEN); 2097 } 2098} 2099 2100static int 2101ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2102{ 2103 if (ssidlen == 0) { 2104 /* 2105 * A bug in the firmware breaks the ``don't associate'' 2106 * bit in the scan options command. To compensate for 2107 * this install a bogus ssid when no ssid is specified 2108 * so the firmware won't try to associate. 2109 */ 2110 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2111 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2112 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2113 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2114 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2115 "\x3c\x3d", IEEE80211_NWID_LEN); 2116 } else { 2117#ifdef IPW_DEBUG 2118 if (ipw_debug > 0) { 2119 printf("Setting ESSID to "); 2120 ieee80211_print_essid(ssid, ssidlen); 2121 printf("\n"); 2122 } 2123#endif 2124 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2125 } 2126} 2127 2128static int 2129ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2130{ 2131 struct ipw_scan_options opts; 2132 2133 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2134 opts.channels = htole32(chanmask); 2135 opts.flags = htole32(flags); 2136 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2137} 2138 2139static int 2140ipw_scan(struct ipw_softc *sc) 2141{ 2142 uint32_t params; 2143 int error; 2144 2145 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2146 2147 if (sc->flags & IPW_FLAG_SCANNING) 2148 return (EBUSY); 2149 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2150 2151 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2152 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2153 if (error != 0) 2154 goto done; 2155 2156 /* 2157 * Setup null/bogus ssid so firmware doesn't use any previous 2158 * ssid to try and associate. This is because the ``don't 2159 * associate'' option bit is broken (sigh). 2160 */ 2161 error = ipw_setssid(sc, NULL, 0); 2162 if (error != 0) 2163 goto done; 2164 2165 /* 2166 * NB: the adapter may be disabled on association lost; 2167 * if so just re-enable it to kick off scanning. 2168 */ 2169 DPRINTF(("Starting scan\n")); 2170 sc->sc_scan_timer = 3; 2171 if (sc->flags & IPW_FLAG_ENABLED) { 2172 params = 0; /* XXX? */ 2173 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2174 ¶ms, sizeof(params)); 2175 } else 2176 error = ipw_enable(sc); 2177done: 2178 if (error != 0) { 2179 DPRINTF(("Scan failed\n")); 2180 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2181 } 2182 return (error); 2183} 2184 2185static int 2186ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2187{ 2188 struct ifnet *ifp = sc->sc_ifp; 2189 struct ieee80211com *ic = ifp->if_l2com; 2190 uint32_t data; 2191 int error; 2192 2193 data = htole32(ieee80211_chan2ieee(ic, chan)); 2194 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2195 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2196 if (error == 0) 2197 ipw_setcurchan(sc, chan); 2198 return error; 2199} 2200 2201static void 2202ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2203{ 2204 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2205 struct ipw_softc *sc = ifp->if_softc; 2206 struct ieee80211_node *ni = vap->iv_bss; 2207 struct ipw_security security; 2208 uint32_t data; 2209 int error; 2210 IPW_LOCK_DECL; 2211 2212 IPW_LOCK(sc); 2213 error = ipw_disable(sc); 2214 if (error != 0) 2215 goto done; 2216 2217 memset(&security, 0, sizeof security); 2218 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2219 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2220 security.ciphers = htole32(IPW_CIPHER_NONE); 2221 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2222 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2223 sizeof security); 2224 if (error != 0) 2225 goto done; 2226 2227 data = htole32(vap->iv_rtsthreshold); 2228 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2229 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2230 if (error != 0) 2231 goto done; 2232 2233 data = htole32(vap->iv_fragthreshold); 2234 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2235 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2236 if (error != 0) 2237 goto done; 2238 2239 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2240 error = ipw_setwepkeys(sc); 2241 if (error != 0) 2242 goto done; 2243 2244 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2245 data = htole32(vap->iv_def_txkey); 2246 DPRINTF(("Setting wep tx key index to %u\n", 2247 le32toh(data))); 2248 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2249 sizeof data); 2250 if (error != 0) 2251 goto done; 2252 } 2253 } 2254 2255 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2256 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2257 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2258 if (error != 0) 2259 goto done; 2260 2261 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2262 if (error != 0) 2263 goto done; 2264 2265 error = ipw_setbssid(sc, ni->ni_bssid); 2266 if (error != 0) 2267 goto done; 2268 2269 if (vap->iv_appie_assocreq != NULL) { 2270 struct ieee80211_appie *ie = vap->iv_appie_assocreq; 2271 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2272 if (error != 0) 2273 goto done; 2274 } 2275 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2276 error = ipw_setchannel(sc, ni->ni_chan); 2277 if (error != 0) 2278 goto done; 2279 } 2280 2281 /* lock scan to ap's channel and enable associate */ 2282 error = ipw_setscanopts(sc, 2283 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2284 if (error != 0) 2285 goto done; 2286 2287 error = ipw_enable(sc); /* finally, enable adapter */ 2288 if (error == 0) 2289 sc->flags |= IPW_FLAG_ASSOCIATING; 2290done: 2291 IPW_UNLOCK(sc); 2292} 2293 2294static void 2295ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2296{ 2297 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2298 struct ieee80211_node *ni = vap->iv_bss; 2299 struct ipw_softc *sc = ifp->if_softc; 2300 IPW_LOCK_DECL; 2301 2302 IPW_LOCK(sc); 2303 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2304 /* 2305 * NB: don't try to do this if ipw_stop_master has 2306 * shutdown the firmware and disabled interrupts. 2307 */ 2308 if (sc->flags & IPW_FLAG_FW_INITED) { 2309 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2310 /* 2311 * NB: firmware currently ignores bssid parameter, but 2312 * supply it in case this changes (follow linux driver). 2313 */ 2314 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2315 ni->ni_bssid, IEEE80211_ADDR_LEN); 2316 } 2317 IPW_UNLOCK(sc); 2318} 2319 2320/* 2321 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2322 * It is called on firmware panics or on watchdog timeouts. 2323 */ 2324static void 2325ipw_init_task(void *context, int pending) 2326{ 2327 ipw_init(context); 2328} 2329 2330static void 2331ipw_init(void *priv) 2332{ 2333 struct ipw_softc *sc = priv; 2334 struct ifnet *ifp = sc->sc_ifp; 2335 struct ieee80211com *ic = ifp->if_l2com; 2336 IPW_LOCK_DECL; 2337 2338 IPW_LOCK(sc); 2339 ipw_init_locked(sc); 2340 IPW_UNLOCK(sc); 2341 2342 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2343 ieee80211_start_all(ic); /* start all vap's */ 2344} 2345 2346static void 2347ipw_init_locked(struct ipw_softc *sc) 2348{ 2349 struct ifnet *ifp = sc->sc_ifp; 2350 struct ieee80211com *ic = ifp->if_l2com; 2351 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2352 const struct firmware *fp; 2353 const struct ipw_firmware_hdr *hdr; 2354 const char *fw; 2355 2356 IPW_LOCK_ASSERT(sc); 2357 2358 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2359 ieee80211_state_name[vap->iv_state], sc->flags)); 2360 2361 /* 2362 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2363 * when loading the firmware and we don't want to be called during this 2364 * operation. 2365 */ 2366 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2367 return; 2368 sc->flags |= IPW_FLAG_INIT_LOCKED; 2369 2370 ipw_stop_locked(sc); 2371 2372 if (ipw_reset(sc) != 0) { 2373 device_printf(sc->sc_dev, "could not reset adapter\n"); 2374 goto fail; 2375 } 2376 2377 if (sc->sc_firmware == NULL) { 2378 device_printf(sc->sc_dev, "no firmware\n"); 2379 goto fail; 2380 } 2381 /* NB: consistency already checked on load */ 2382 fp = sc->sc_firmware; 2383 hdr = (const struct ipw_firmware_hdr *)fp->data; 2384 2385 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2386 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2387 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2388 device_printf(sc->sc_dev, "could not load microcode\n"); 2389 goto fail; 2390 } 2391 2392 ipw_stop_master(sc); 2393 2394 /* 2395 * Setup tx, rx and status rings. 2396 */ 2397 sc->txold = IPW_NTBD - 1; 2398 sc->txcur = 0; 2399 sc->txfree = IPW_NTBD - 2; 2400 sc->rxcur = IPW_NRBD - 1; 2401 2402 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2403 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2404 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2405 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2406 2407 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2408 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2409 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2410 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2411 2412 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2413 2414 fw = (const char *)fp->data + sizeof *hdr; 2415 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2416 device_printf(sc->sc_dev, "could not load firmware\n"); 2417 goto fail; 2418 } 2419 2420 sc->flags |= IPW_FLAG_FW_INITED; 2421 2422 /* retrieve information tables base addresses */ 2423 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2424 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2425 2426 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2427 2428 if (ipw_config(sc) != 0) { 2429 device_printf(sc->sc_dev, "device configuration failed\n"); 2430 goto fail; 2431 } 2432 2433 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2434 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2435 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2436 2437 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2438 return; 2439 2440fail: 2441 ipw_stop_locked(sc); 2442 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2443} 2444 2445static int 2446ipw_config(struct ipw_softc *sc) 2447{ 2448 struct ifnet *ifp = sc->sc_ifp; 2449 struct ieee80211com *ic = ifp->if_l2com; 2450 struct ipw_configuration config; 2451 uint32_t data; 2452 int error; 2453 2454 error = ipw_disable(sc); 2455 if (error != 0) 2456 return error; 2457 2458 switch (ic->ic_opmode) { 2459 case IEEE80211_M_STA: 2460 case IEEE80211_M_HOSTAP: 2461 case IEEE80211_M_WDS: /* XXX */ 2462 data = htole32(IPW_MODE_BSS); 2463 break; 2464 case IEEE80211_M_IBSS: 2465 case IEEE80211_M_AHDEMO: 2466 data = htole32(IPW_MODE_IBSS); 2467 break; 2468 case IEEE80211_M_MONITOR: 2469 data = htole32(IPW_MODE_MONITOR); 2470 break; 2471 default: 2472 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2473 return EINVAL; 2474 } 2475 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2476 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2477 if (error != 0) 2478 return error; 2479 2480 if (ic->ic_opmode == IEEE80211_M_IBSS || 2481 ic->ic_opmode == IEEE80211_M_MONITOR) { 2482 error = ipw_setchannel(sc, ic->ic_curchan); 2483 if (error != 0) 2484 return error; 2485 } 2486 2487 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2488 return ipw_enable(sc); 2489 2490 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2491 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2492 if (ic->ic_opmode == IEEE80211_M_IBSS) 2493 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2494 if (ifp->if_flags & IFF_PROMISC) 2495 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2496 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2497 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2498 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2499 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2500 if (error != 0) 2501 return error; 2502 2503 data = htole32(0x3); /* 1, 2 */ 2504 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2505 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2506 if (error != 0) 2507 return error; 2508 2509 /* NB: use the same rate set */ 2510 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2511 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2512 if (error != 0) 2513 return error; 2514 2515 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2516 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2517 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2518 if (error != 0) 2519 return error; 2520 2521 data = htole32(IPW_POWER_MODE_CAM); 2522 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2523 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2524 if (error != 0) 2525 return error; 2526 2527 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2528 data = htole32(32); /* default value */ 2529 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2530 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2531 sizeof data); 2532 if (error != 0) 2533 return error; 2534 } 2535 2536 return 0; 2537} 2538 2539static void 2540ipw_stop(void *priv) 2541{ 2542 struct ipw_softc *sc = priv; 2543 IPW_LOCK_DECL; 2544 2545 IPW_LOCK(sc); 2546 ipw_stop_locked(sc); 2547 IPW_UNLOCK(sc); 2548} 2549 2550static void 2551ipw_stop_locked(struct ipw_softc *sc) 2552{ 2553 struct ifnet *ifp = sc->sc_ifp; 2554 int i; 2555 2556 IPW_LOCK_ASSERT(sc); 2557 2558 callout_stop(&sc->sc_wdtimer); 2559 ipw_stop_master(sc); 2560 2561 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2562 2563 /* 2564 * Release tx buffers. 2565 */ 2566 for (i = 0; i < IPW_NTBD; i++) 2567 ipw_release_sbd(sc, &sc->stbd_list[i]); 2568 2569 sc->sc_tx_timer = 0; 2570 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2571} 2572 2573static int 2574ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2575{ 2576 struct ipw_softc *sc = arg1; 2577 uint32_t i, size, buf[256]; 2578 2579 memset(buf, 0, sizeof buf); 2580 2581 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2582 return SYSCTL_OUT(req, buf, sizeof buf); 2583 2584 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2585 2586 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2587 for (i = 1; i < size; i++) 2588 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2589 2590 return SYSCTL_OUT(req, buf, size); 2591} 2592 2593static int 2594ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2595{ 2596 struct ipw_softc *sc = arg1; 2597 int val; 2598 2599 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2600 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2601 2602 return SYSCTL_OUT(req, &val, sizeof val); 2603} 2604 2605static uint32_t 2606ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2607{ 2608 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2609} 2610 2611static void 2612ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2613{ 2614 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2615} 2616 2617#if 0 2618static int 2619ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2620{ 2621 uint32_t addr, info; 2622 uint16_t count, size; 2623 uint32_t total; 2624 2625 /* addr[4] + count[2] + size[2] */ 2626 addr = MEM_READ_4(sc, sc->table2_base + off); 2627 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2628 2629 count = info >> 16; 2630 size = info & 0xffff; 2631 total = count * size; 2632 2633 if (total > *len) { 2634 *len = total; 2635 return EINVAL; 2636 } 2637 2638 *len = total; 2639 ipw_read_mem_1(sc, addr, buf, total); 2640 2641 return 0; 2642} 2643 2644static void 2645ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2646 bus_size_t count) 2647{ 2648 for (; count > 0; offset++, datap++, count--) { 2649 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2650 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2651 } 2652} 2653#endif 2654 2655static void 2656ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2657 bus_size_t count) 2658{ 2659 for (; count > 0; offset++, datap++, count--) { 2660 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2661 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2662 } 2663} 2664 2665static void 2666ipw_scan_start(struct ieee80211com *ic) 2667{ 2668 struct ifnet *ifp = ic->ic_ifp; 2669 struct ipw_softc *sc = ifp->if_softc; 2670 IPW_LOCK_DECL; 2671 2672 IPW_LOCK(sc); 2673 ipw_scan(sc); 2674 IPW_UNLOCK(sc); 2675} 2676 2677static void 2678ipw_set_channel(struct ieee80211com *ic) 2679{ 2680 struct ifnet *ifp = ic->ic_ifp; 2681 struct ipw_softc *sc = ifp->if_softc; 2682 IPW_LOCK_DECL; 2683 2684 IPW_LOCK(sc); 2685 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2686 ipw_disable(sc); 2687 ipw_setchannel(sc, ic->ic_curchan); 2688 ipw_enable(sc); 2689 } 2690 IPW_UNLOCK(sc); 2691} 2692 2693static void 2694ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2695{ 2696 /* NB: all channels are scanned at once */ 2697} 2698 2699static void 2700ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2701{ 2702 /* NB: don't try to abort scan; wait for firmware to finish */ 2703} 2704 2705static void 2706ipw_scan_end(struct ieee80211com *ic) 2707{ 2708 struct ifnet *ifp = ic->ic_ifp; 2709 struct ipw_softc *sc = ifp->if_softc; 2710 IPW_LOCK_DECL; 2711 2712 IPW_LOCK(sc); 2713 sc->flags &= ~IPW_FLAG_SCANNING; 2714 IPW_UNLOCK(sc); 2715} 2716