if_ipw.c revision 192468
1/* $FreeBSD: head/sys/dev/ipw/if_ipw.c 192468 2009-05-20 20:00:40Z sam $ */ 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 192468 2009-05-20 20:00:40Z sam $"); 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_auth_and_assoc. On completing 892 * the join we are then called again with an 893 * AUTH -> RUN transition and we want to do nothing. 894 * This is 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 ipw_assoc(ic, vap); 908 break; 909 910 case IEEE80211_S_ASSOC: 911 /* 912 * If we are not transitioning from AUTH the resend the 913 * association request. 914 */ 915 if (ostate != IEEE80211_S_AUTH) 916 ipw_assoc(ic, vap); 917 break; 918 919 default: 920 break; 921 } 922 IEEE80211_LOCK(ic); 923 return ivp->newstate(vap, nstate, arg); 924} 925 926/* 927 * Read 16 bits at address 'addr' from the serial EEPROM. 928 */ 929static uint16_t 930ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 931{ 932 uint32_t tmp; 933 uint16_t val; 934 int n; 935 936 /* clock C once before the first command */ 937 IPW_EEPROM_CTL(sc, 0); 938 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 939 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 940 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 941 942 /* write start bit (1) */ 943 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 944 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 945 946 /* write READ opcode (10) */ 947 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 948 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 949 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 950 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 951 952 /* write address A7-A0 */ 953 for (n = 7; n >= 0; n--) { 954 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 955 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 956 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 957 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 958 } 959 960 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 961 962 /* read data Q15-Q0 */ 963 val = 0; 964 for (n = 15; n >= 0; n--) { 965 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 966 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 967 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 968 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 969 } 970 971 IPW_EEPROM_CTL(sc, 0); 972 973 /* clear Chip Select and clock C */ 974 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 975 IPW_EEPROM_CTL(sc, 0); 976 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 977 978 return le16toh(val); 979} 980 981static void 982ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 983{ 984 struct ipw_cmd *cmd; 985 986 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 987 988 cmd = mtod(sbuf->m, struct ipw_cmd *); 989 990 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 991 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 992 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 993 le32toh(cmd->status))); 994 995 sc->flags &= ~IPW_FLAG_BUSY; 996 wakeup(sc); 997} 998 999static void 1000ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1001{ 1002#define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1003 struct ifnet *ifp = sc->sc_ifp; 1004 struct ieee80211com *ic = ifp->if_l2com; 1005 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1006 uint32_t state; 1007 1008 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1009 1010 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1011 1012 switch (state) { 1013 case IPW_STATE_ASSOCIATED: 1014 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1015 IEEESTATE(vap), sc->flags)); 1016 /* XXX suppress state change in case the fw auto-associates */ 1017 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1018 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1019 IEEESTATE(vap), sc->flags)); 1020 break; 1021 } 1022 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1023 sc->flags |= IPW_FLAG_ASSOCIATED; 1024 ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 1025 break; 1026 1027 case IPW_STATE_SCANNING: 1028 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1029 IEEESTATE(vap), sc->flags)); 1030 /* 1031 * NB: Check driver state for association on assoc 1032 * loss as the firmware will immediately start to 1033 * scan and we would treat it as a beacon miss if 1034 * we checked the 802.11 layer state. 1035 */ 1036 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1037 /* XXX probably need to issue disassoc to fw */ 1038 ieee80211_beacon_miss(ic); 1039 } 1040 break; 1041 1042 case IPW_STATE_SCAN_COMPLETE: 1043 /* 1044 * XXX For some reason scan requests generate scan 1045 * started + scan done events before any traffic is 1046 * received (e.g. probe response frames). We work 1047 * around this by marking the HACK flag and skipping 1048 * the first scan complete event. 1049 */ 1050 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1051 IEEESTATE(vap), sc->flags)); 1052 if (sc->flags & IPW_FLAG_HACK) { 1053 sc->flags &= ~IPW_FLAG_HACK; 1054 break; 1055 } 1056 if (sc->flags & IPW_FLAG_SCANNING) { 1057 ieee80211_scan_done(vap); 1058 sc->flags &= ~IPW_FLAG_SCANNING; 1059 sc->sc_scan_timer = 0; 1060 } 1061 break; 1062 1063 case IPW_STATE_ASSOCIATION_LOST: 1064 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1065 IEEESTATE(vap), sc->flags)); 1066 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1067 if (vap->iv_state == IEEE80211_S_RUN) 1068 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1069 break; 1070 1071 case IPW_STATE_DISABLED: 1072 /* XXX? is this right? */ 1073 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1074 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1075 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1076 IEEESTATE(vap), sc->flags)); 1077 break; 1078 1079 case IPW_STATE_RADIO_DISABLED: 1080 device_printf(sc->sc_dev, "radio turned off\n"); 1081 ieee80211_notify_radio(ic, 0); 1082 ipw_stop_locked(sc); 1083 /* XXX start polling thread to detect radio on */ 1084 break; 1085 1086 default: 1087 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1088 __func__, state, IEEESTATE(vap), sc->flags)); 1089 break; 1090 } 1091#undef IEEESTATE 1092} 1093 1094/* 1095 * Set driver state for current channel. 1096 */ 1097static void 1098ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1099{ 1100 struct ifnet *ifp = sc->sc_ifp; 1101 struct ieee80211com *ic = ifp->if_l2com; 1102 1103 ic->ic_curchan = chan; 1104 ieee80211_radiotap_chan_change(ic); 1105} 1106 1107/* 1108 * XXX: Hack to set the current channel to the value advertised in beacons or 1109 * probe responses. Only used during AP detection. 1110 */ 1111static void 1112ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1113{ 1114 struct ifnet *ifp = sc->sc_ifp; 1115 struct ieee80211com *ic = ifp->if_l2com; 1116 struct ieee80211_channel *c; 1117 struct ieee80211_frame *wh; 1118 uint8_t subtype; 1119 uint8_t *frm, *efrm; 1120 1121 wh = mtod(m, struct ieee80211_frame *); 1122 1123 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1124 return; 1125 1126 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1127 1128 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1129 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1130 return; 1131 1132 /* XXX use ieee80211_parse_beacon */ 1133 frm = (uint8_t *)(wh + 1); 1134 efrm = mtod(m, uint8_t *) + m->m_len; 1135 1136 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1137 while (frm < efrm) { 1138 if (*frm == IEEE80211_ELEMID_DSPARMS) 1139#if IEEE80211_CHAN_MAX < 255 1140 if (frm[2] <= IEEE80211_CHAN_MAX) 1141#endif 1142 { 1143 DPRINTF(("Fixing channel to %d\n", frm[2])); 1144 c = ieee80211_find_channel(ic, 1145 ieee80211_ieee2mhz(frm[2], 0), 1146 IEEE80211_CHAN_B); 1147 if (c == NULL) 1148 c = &ic->ic_channels[0]; 1149 ipw_setcurchan(sc, c); 1150 } 1151 1152 frm += frm[1] + 2; 1153 } 1154} 1155 1156static void 1157ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1158 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1159{ 1160 struct ifnet *ifp = sc->sc_ifp; 1161 struct ieee80211com *ic = ifp->if_l2com; 1162 struct mbuf *mnew, *m; 1163 struct ieee80211_node *ni; 1164 bus_addr_t physaddr; 1165 int error; 1166 int8_t rssi, nf; 1167 IPW_LOCK_DECL; 1168 1169 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1170 status->rssi)); 1171 1172 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1173 le32toh(status->len) > MCLBYTES) 1174 return; 1175 1176 /* 1177 * Try to allocate a new mbuf for this ring element and load it before 1178 * processing the current mbuf. If the ring element cannot be loaded, 1179 * drop the received packet and reuse the old mbuf. In the unlikely 1180 * case that the old mbuf can't be reloaded either, explicitly panic. 1181 */ 1182 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1183 if (mnew == NULL) { 1184 ifp->if_ierrors++; 1185 return; 1186 } 1187 1188 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1189 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1190 1191 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1192 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1193 if (error != 0) { 1194 m_freem(mnew); 1195 1196 /* try to reload the old mbuf */ 1197 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1198 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1199 &physaddr, 0); 1200 if (error != 0) { 1201 /* very unlikely that it will fail... */ 1202 panic("%s: could not load old rx mbuf", 1203 device_get_name(sc->sc_dev)); 1204 } 1205 ifp->if_ierrors++; 1206 return; 1207 } 1208 1209 /* 1210 * New mbuf successfully loaded, update Rx ring and continue 1211 * processing. 1212 */ 1213 m = sbuf->m; 1214 sbuf->m = mnew; 1215 sbd->bd->physaddr = htole32(physaddr); 1216 1217 /* finalize mbuf */ 1218 m->m_pkthdr.rcvif = ifp; 1219 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1220 1221 rssi = status->rssi + IPW_RSSI_TO_DBM; 1222 nf = -95; 1223 if (ieee80211_radiotap_active(ic)) { 1224 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1225 1226 tap->wr_flags = 0; 1227 tap->wr_antsignal = rssi; 1228 tap->wr_antnoise = nf; 1229 } 1230 1231 if (sc->flags & IPW_FLAG_SCANNING) 1232 ipw_fix_channel(sc, m); 1233 1234 IPW_UNLOCK(sc); 1235 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1236 if (ni != NULL) { 1237 (void) ieee80211_input(ni, m, rssi, nf); 1238 ieee80211_free_node(ni); 1239 } else 1240 (void) ieee80211_input_all(ic, m, rssi, nf); 1241 IPW_LOCK(sc); 1242 1243 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1244} 1245 1246static void 1247ipw_rx_intr(struct ipw_softc *sc) 1248{ 1249 struct ipw_status *status; 1250 struct ipw_soft_bd *sbd; 1251 struct ipw_soft_buf *sbuf; 1252 uint32_t r, i; 1253 1254 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1255 return; 1256 1257 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1258 1259 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1260 1261 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1262 status = &sc->status_list[i]; 1263 sbd = &sc->srbd_list[i]; 1264 sbuf = sbd->priv; 1265 1266 switch (le16toh(status->code) & 0xf) { 1267 case IPW_STATUS_CODE_COMMAND: 1268 ipw_rx_cmd_intr(sc, sbuf); 1269 break; 1270 1271 case IPW_STATUS_CODE_NEWSTATE: 1272 ipw_rx_newstate_intr(sc, sbuf); 1273 break; 1274 1275 case IPW_STATUS_CODE_DATA_802_3: 1276 case IPW_STATUS_CODE_DATA_802_11: 1277 ipw_rx_data_intr(sc, status, sbd, sbuf); 1278 break; 1279 1280 case IPW_STATUS_CODE_NOTIFICATION: 1281 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1282 le32toh(status->len), status->flags)); 1283 /* XXX maybe drive state machine AUTH->ASSOC? */ 1284 break; 1285 1286 default: 1287 device_printf(sc->sc_dev, "unexpected status code %u\n", 1288 le16toh(status->code)); 1289 } 1290 1291 /* firmware was killed, stop processing received frames */ 1292 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1293 return; 1294 1295 sbd->bd->flags = 0; 1296 } 1297 1298 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1299 1300 /* kick the firmware */ 1301 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1302 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1303} 1304 1305static void 1306ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1307{ 1308 struct ipw_soft_hdr *shdr; 1309 struct ipw_soft_buf *sbuf; 1310 1311 switch (sbd->type) { 1312 case IPW_SBD_TYPE_COMMAND: 1313 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1314 BUS_DMASYNC_POSTWRITE); 1315 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1316 break; 1317 1318 case IPW_SBD_TYPE_HEADER: 1319 shdr = sbd->priv; 1320 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1321 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1322 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1323 break; 1324 1325 case IPW_SBD_TYPE_DATA: 1326 sbuf = sbd->priv; 1327 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1328 BUS_DMASYNC_POSTWRITE); 1329 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1330 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1331 1332 if (sbuf->m->m_flags & M_TXCB) 1333 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1334 m_freem(sbuf->m); 1335 ieee80211_free_node(sbuf->ni); 1336 1337 sc->sc_tx_timer = 0; 1338 break; 1339 } 1340 1341 sbd->type = IPW_SBD_TYPE_NOASSOC; 1342} 1343 1344static void 1345ipw_tx_intr(struct ipw_softc *sc) 1346{ 1347 struct ifnet *ifp = sc->sc_ifp; 1348 struct ipw_soft_bd *sbd; 1349 uint32_t r, i; 1350 1351 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1352 return; 1353 1354 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1355 1356 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1357 sbd = &sc->stbd_list[i]; 1358 1359 if (sbd->type == IPW_SBD_TYPE_DATA) 1360 ifp->if_opackets++; 1361 1362 ipw_release_sbd(sc, sbd); 1363 sc->txfree++; 1364 } 1365 1366 /* remember what the firmware has processed */ 1367 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1368 1369 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1370 ipw_start_locked(ifp); 1371} 1372 1373static void 1374ipw_fatal_error_intr(struct ipw_softc *sc) 1375{ 1376 struct ifnet *ifp = sc->sc_ifp; 1377 struct ieee80211com *ic = ifp->if_l2com; 1378 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1379 1380 device_printf(sc->sc_dev, "firmware error\n"); 1381 if (vap != NULL) 1382 ieee80211_cancel_scan(vap); 1383 ieee80211_runtask(ic, &sc->sc_init_task); 1384} 1385 1386static void 1387ipw_intr(void *arg) 1388{ 1389 struct ipw_softc *sc = arg; 1390 uint32_t r; 1391 IPW_LOCK_DECL; 1392 1393 IPW_LOCK(sc); 1394 1395 r = CSR_READ_4(sc, IPW_CSR_INTR); 1396 if (r == 0 || r == 0xffffffff) 1397 goto done; 1398 1399 /* disable interrupts */ 1400 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1401 1402 /* acknowledge all interrupts */ 1403 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1404 1405 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1406 ipw_fatal_error_intr(sc); 1407 goto done; 1408 } 1409 1410 if (r & IPW_INTR_FW_INIT_DONE) 1411 wakeup(sc); 1412 1413 if (r & IPW_INTR_RX_TRANSFER) 1414 ipw_rx_intr(sc); 1415 1416 if (r & IPW_INTR_TX_TRANSFER) 1417 ipw_tx_intr(sc); 1418 1419 /* re-enable interrupts */ 1420 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1421done: 1422 IPW_UNLOCK(sc); 1423} 1424 1425static void 1426ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1427{ 1428 if (error != 0) 1429 return; 1430 1431 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1432 1433 *(bus_addr_t *)arg = segs[0].ds_addr; 1434} 1435 1436static const char * 1437ipw_cmdname(int cmd) 1438{ 1439#define N(a) (sizeof(a) / sizeof(a[0])) 1440 static const struct { 1441 int cmd; 1442 const char *name; 1443 } cmds[] = { 1444 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1445 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1446 { IPW_CMD_DISABLE, "DISABLE" }, 1447 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1448 { IPW_CMD_ENABLE, "ENABLE" }, 1449 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1450 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1451 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1452 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1453 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1454 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1455 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1456 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1457 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1458 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1459 { IPW_CMD_SET_MODE, "SET_MODE" }, 1460 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1461 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1462 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1463 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1464 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1465 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1466 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1467 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1468 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1469 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1470 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1471 1472 }; 1473 static char buf[12]; 1474 int i; 1475 1476 for (i = 0; i < N(cmds); i++) 1477 if (cmds[i].cmd == cmd) 1478 return cmds[i].name; 1479 snprintf(buf, sizeof(buf), "%u", cmd); 1480 return buf; 1481#undef N 1482} 1483 1484/* 1485 * Send a command to the firmware and wait for the acknowledgement. 1486 */ 1487static int 1488ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1489{ 1490 struct ipw_soft_bd *sbd; 1491 bus_addr_t physaddr; 1492 int error; 1493 1494 IPW_LOCK_ASSERT(sc); 1495 1496 if (sc->flags & IPW_FLAG_BUSY) { 1497 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1498 __func__, ipw_cmdname(type)); 1499 return EAGAIN; 1500 } 1501 sc->flags |= IPW_FLAG_BUSY; 1502 1503 sbd = &sc->stbd_list[sc->txcur]; 1504 1505 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1506 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1507 if (error != 0) { 1508 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1509 sc->flags &= ~IPW_FLAG_BUSY; 1510 return error; 1511 } 1512 1513 sc->cmd.type = htole32(type); 1514 sc->cmd.subtype = 0; 1515 sc->cmd.len = htole32(len); 1516 sc->cmd.seq = 0; 1517 memcpy(sc->cmd.data, data, len); 1518 1519 sbd->type = IPW_SBD_TYPE_COMMAND; 1520 sbd->bd->physaddr = htole32(physaddr); 1521 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1522 sbd->bd->nfrag = 1; 1523 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1524 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1525 1526 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1527 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1528 1529#ifdef IPW_DEBUG 1530 if (ipw_debug >= 4) { 1531 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1532 0, 0, len); 1533 /* Print the data buffer in the higher debug level */ 1534 if (ipw_debug >= 9 && len > 0) { 1535 printf(" data: 0x"); 1536 for (int i = 1; i <= len; i++) 1537 printf("%1D", (u_char *)data + len - i, ""); 1538 } 1539 printf("\n"); 1540 } 1541#endif 1542 1543 /* kick firmware */ 1544 sc->txfree--; 1545 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1546 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1547 1548 /* wait at most one second for command to complete */ 1549 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1550 if (error != 0) { 1551 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1552 __func__, ipw_cmdname(type), error); 1553 sc->flags &= ~IPW_FLAG_BUSY; 1554 return (error); 1555 } 1556 return (0); 1557} 1558 1559static int 1560ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1561{ 1562 struct ipw_softc *sc = ifp->if_softc; 1563 struct ieee80211com *ic = ifp->if_l2com; 1564 struct ieee80211vap *vap = ni->ni_vap; 1565 struct ieee80211_frame *wh; 1566 struct ipw_soft_bd *sbd; 1567 struct ipw_soft_hdr *shdr; 1568 struct ipw_soft_buf *sbuf; 1569 struct ieee80211_key *k; 1570 struct mbuf *mnew; 1571 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1572 bus_addr_t physaddr; 1573 int nsegs, error, i; 1574 1575 wh = mtod(m0, struct ieee80211_frame *); 1576 1577 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1578 k = ieee80211_crypto_encap(ni, m0); 1579 if (k == NULL) { 1580 m_freem(m0); 1581 return ENOBUFS; 1582 } 1583 /* packet header may have moved, reset our local pointer */ 1584 wh = mtod(m0, struct ieee80211_frame *); 1585 } 1586 1587 if (ieee80211_radiotap_active_vap(vap)) { 1588 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1589 1590 tap->wt_flags = 0; 1591 1592 ieee80211_radiotap_tx(vap, m0); 1593 } 1594 1595 shdr = SLIST_FIRST(&sc->free_shdr); 1596 sbuf = SLIST_FIRST(&sc->free_sbuf); 1597 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1598 1599 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1600 shdr->hdr.subtype = 0; 1601 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_WEP) ? 1 : 0; 1602 shdr->hdr.encrypt = 0; 1603 shdr->hdr.keyidx = 0; 1604 shdr->hdr.keysz = 0; 1605 shdr->hdr.fragmentsz = 0; 1606 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1607 if (ic->ic_opmode == IEEE80211_M_STA) 1608 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1609 else 1610 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1611 1612 /* trim IEEE802.11 header */ 1613 m_adj(m0, sizeof (struct ieee80211_frame)); 1614 1615 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1616 &nsegs, 0); 1617 if (error != 0 && error != EFBIG) { 1618 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1619 error); 1620 m_freem(m0); 1621 return error; 1622 } 1623 if (error != 0) { 1624 mnew = m_defrag(m0, M_DONTWAIT); 1625 if (mnew == NULL) { 1626 device_printf(sc->sc_dev, 1627 "could not defragment mbuf\n"); 1628 m_freem(m0); 1629 return ENOBUFS; 1630 } 1631 m0 = mnew; 1632 1633 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1634 segs, &nsegs, 0); 1635 if (error != 0) { 1636 device_printf(sc->sc_dev, 1637 "could not map mbuf (error %d)\n", error); 1638 m_freem(m0); 1639 return error; 1640 } 1641 } 1642 1643 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1644 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1645 if (error != 0) { 1646 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1647 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1648 m_freem(m0); 1649 return error; 1650 } 1651 1652 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1653 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1654 1655 sbd = &sc->stbd_list[sc->txcur]; 1656 sbd->type = IPW_SBD_TYPE_HEADER; 1657 sbd->priv = shdr; 1658 sbd->bd->physaddr = htole32(physaddr); 1659 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1660 sbd->bd->nfrag = 1 + nsegs; 1661 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1662 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1663 1664 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1665 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1666 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1667 ":")); 1668 1669 sc->txfree--; 1670 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1671 1672 sbuf->m = m0; 1673 sbuf->ni = ni; 1674 1675 for (i = 0; i < nsegs; i++) { 1676 sbd = &sc->stbd_list[sc->txcur]; 1677 1678 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1679 sbd->bd->len = htole32(segs[i].ds_len); 1680 sbd->bd->nfrag = 0; 1681 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1682 if (i == nsegs - 1) { 1683 sbd->type = IPW_SBD_TYPE_DATA; 1684 sbd->priv = sbuf; 1685 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1686 } else { 1687 sbd->type = IPW_SBD_TYPE_NOASSOC; 1688 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1689 } 1690 1691 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1692 1693 sc->txfree--; 1694 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1695 } 1696 1697 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1698 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1699 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1700 1701 /* kick firmware */ 1702 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1703 1704 return 0; 1705} 1706 1707static int 1708ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1709 const struct ieee80211_bpf_params *params) 1710{ 1711 /* no support; just discard */ 1712 m_freem(m); 1713 ieee80211_free_node(ni); 1714 return 0; 1715} 1716 1717static void 1718ipw_start(struct ifnet *ifp) 1719{ 1720 struct ipw_softc *sc = ifp->if_softc; 1721 IPW_LOCK_DECL; 1722 1723 IPW_LOCK(sc); 1724 ipw_start_locked(ifp); 1725 IPW_UNLOCK(sc); 1726} 1727 1728static void 1729ipw_start_locked(struct ifnet *ifp) 1730{ 1731 struct ipw_softc *sc = ifp->if_softc; 1732 struct ieee80211_node *ni; 1733 struct mbuf *m; 1734 1735 IPW_LOCK_ASSERT(sc); 1736 1737 for (;;) { 1738 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1739 if (m == NULL) 1740 break; 1741 if (sc->txfree < 1 + IPW_MAX_NSEG) { 1742 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1743 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1744 break; 1745 } 1746 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1747 if (ipw_tx_start(ifp, m, ni) != 0) { 1748 ieee80211_free_node(ni); 1749 ifp->if_oerrors++; 1750 break; 1751 } 1752 /* start watchdog timer */ 1753 sc->sc_tx_timer = 5; 1754 } 1755} 1756 1757static void 1758ipw_watchdog(void *arg) 1759{ 1760 struct ipw_softc *sc = arg; 1761 struct ifnet *ifp = sc->sc_ifp; 1762 struct ieee80211com *ic = ifp->if_l2com; 1763 1764 IPW_LOCK_ASSERT(sc); 1765 1766 if (sc->sc_tx_timer > 0) { 1767 if (--sc->sc_tx_timer == 0) { 1768 if_printf(ifp, "device timeout\n"); 1769 ifp->if_oerrors++; 1770 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1771 } 1772 } 1773 if (sc->sc_scan_timer > 0) { 1774 if (--sc->sc_scan_timer == 0) { 1775 DPRINTFN(3, ("Scan timeout\n")); 1776 /* End the scan */ 1777 if (sc->flags & IPW_FLAG_SCANNING) { 1778 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1779 sc->flags &= ~IPW_FLAG_SCANNING; 1780 } 1781 } 1782 } 1783 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1784 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1785} 1786 1787static int 1788ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1789{ 1790 struct ipw_softc *sc = ifp->if_softc; 1791 struct ieee80211com *ic = ifp->if_l2com; 1792 struct ifreq *ifr = (struct ifreq *) data; 1793 int error = 0, startall = 0; 1794 IPW_LOCK_DECL; 1795 1796 switch (cmd) { 1797 case SIOCSIFFLAGS: 1798 IPW_LOCK(sc); 1799 if (ifp->if_flags & IFF_UP) { 1800 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1801 ipw_init_locked(sc); 1802 startall = 1; 1803 } 1804 } else { 1805 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1806 ipw_stop_locked(sc); 1807 } 1808 IPW_UNLOCK(sc); 1809 if (startall) 1810 ieee80211_start_all(ic); 1811 break; 1812 case SIOCGIFMEDIA: 1813 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1814 break; 1815 case SIOCGIFADDR: 1816 error = ether_ioctl(ifp, cmd, data); 1817 break; 1818 default: 1819 error = EINVAL; 1820 break; 1821 } 1822 return error; 1823} 1824 1825static void 1826ipw_stop_master(struct ipw_softc *sc) 1827{ 1828 uint32_t tmp; 1829 int ntries; 1830 1831 /* disable interrupts */ 1832 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1833 1834 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1835 for (ntries = 0; ntries < 50; ntries++) { 1836 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1837 break; 1838 DELAY(10); 1839 } 1840 if (ntries == 50) 1841 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1842 1843 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1844 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1845 1846 /* Clear all flags except the following */ 1847 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1848} 1849 1850static int 1851ipw_reset(struct ipw_softc *sc) 1852{ 1853 uint32_t tmp; 1854 int ntries; 1855 1856 ipw_stop_master(sc); 1857 1858 /* move adapter to D0 state */ 1859 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1860 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1861 1862 /* wait for clock stabilization */ 1863 for (ntries = 0; ntries < 1000; ntries++) { 1864 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1865 break; 1866 DELAY(200); 1867 } 1868 if (ntries == 1000) 1869 return EIO; 1870 1871 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1872 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1873 1874 DELAY(10); 1875 1876 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1877 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1878 1879 return 0; 1880} 1881 1882static int 1883ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1884{ 1885 int ms = hz < 1000 ? 1 : hz/10; 1886 int i, error; 1887 1888 for (i = 0; i < 100; i++) { 1889 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1890 return 0; 1891 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1892 if (error == 0 || error != EWOULDBLOCK) 1893 return 0; 1894 } 1895 DPRINTF(("%s: timeout waiting for %s\n", 1896 __func__, waitfor ? "disable" : "enable")); 1897 return ETIMEDOUT; 1898} 1899 1900static int 1901ipw_enable(struct ipw_softc *sc) 1902{ 1903 int error; 1904 1905 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1906 DPRINTF(("Enable adapter\n")); 1907 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1908 if (error != 0) 1909 return error; 1910 error = ipw_waitfordisable(sc, 0); 1911 if (error != 0) 1912 return error; 1913 sc->flags |= IPW_FLAG_ENABLED; 1914 } 1915 return 0; 1916} 1917 1918static int 1919ipw_disable(struct ipw_softc *sc) 1920{ 1921 int error; 1922 1923 if (sc->flags & IPW_FLAG_ENABLED) { 1924 DPRINTF(("Disable adapter\n")); 1925 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1926 if (error != 0) 1927 return error; 1928 error = ipw_waitfordisable(sc, 1); 1929 if (error != 0) 1930 return error; 1931 sc->flags &= ~IPW_FLAG_ENABLED; 1932 } 1933 return 0; 1934} 1935 1936/* 1937 * Upload the microcode to the device. 1938 */ 1939static int 1940ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1941{ 1942 int ntries; 1943 1944 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1945 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1946 1947 MEM_WRITE_2(sc, 0x220000, 0x0703); 1948 MEM_WRITE_2(sc, 0x220000, 0x0707); 1949 1950 MEM_WRITE_1(sc, 0x210014, 0x72); 1951 MEM_WRITE_1(sc, 0x210014, 0x72); 1952 1953 MEM_WRITE_1(sc, 0x210000, 0x40); 1954 MEM_WRITE_1(sc, 0x210000, 0x00); 1955 MEM_WRITE_1(sc, 0x210000, 0x40); 1956 1957 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1958 1959 MEM_WRITE_1(sc, 0x210000, 0x00); 1960 MEM_WRITE_1(sc, 0x210000, 0x00); 1961 MEM_WRITE_1(sc, 0x210000, 0x80); 1962 1963 MEM_WRITE_2(sc, 0x220000, 0x0703); 1964 MEM_WRITE_2(sc, 0x220000, 0x0707); 1965 1966 MEM_WRITE_1(sc, 0x210014, 0x72); 1967 MEM_WRITE_1(sc, 0x210014, 0x72); 1968 1969 MEM_WRITE_1(sc, 0x210000, 0x00); 1970 MEM_WRITE_1(sc, 0x210000, 0x80); 1971 1972 for (ntries = 0; ntries < 10; ntries++) { 1973 if (MEM_READ_1(sc, 0x210000) & 1) 1974 break; 1975 DELAY(10); 1976 } 1977 if (ntries == 10) { 1978 device_printf(sc->sc_dev, 1979 "timeout waiting for ucode to initialize\n"); 1980 return EIO; 1981 } 1982 1983 MEM_WRITE_4(sc, 0x3000e0, 0); 1984 1985 return 0; 1986} 1987 1988/* set of macros to handle unaligned little endian data in firmware image */ 1989#define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1990#define GETLE16(p) ((p)[0] | (p)[1] << 8) 1991static int 1992ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 1993{ 1994 const uint8_t *p, *end; 1995 uint32_t tmp, dst; 1996 uint16_t len; 1997 int error; 1998 1999 p = fw; 2000 end = fw + size; 2001 while (p < end) { 2002 dst = GETLE32(p); p += 4; 2003 len = GETLE16(p); p += 2; 2004 2005 ipw_write_mem_1(sc, dst, p, len); 2006 p += len; 2007 } 2008 2009 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 2010 IPW_IO_LED_OFF); 2011 2012 /* enable interrupts */ 2013 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 2014 2015 /* kick the firmware */ 2016 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 2017 2018 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 2019 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 2020 2021 /* wait at most one second for firmware initialization to complete */ 2022 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 2023 device_printf(sc->sc_dev, "timeout waiting for firmware " 2024 "initialization to complete\n"); 2025 return error; 2026 } 2027 2028 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2029 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2030 IPW_IO_GPIO3_MASK); 2031 2032 return 0; 2033} 2034 2035static int 2036ipw_setwepkeys(struct ipw_softc *sc) 2037{ 2038 struct ifnet *ifp = sc->sc_ifp; 2039 struct ieee80211com *ic = ifp->if_l2com; 2040 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2041 struct ipw_wep_key wepkey; 2042 struct ieee80211_key *wk; 2043 int error, i; 2044 2045 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2046 wk = &vap->iv_nw_keys[i]; 2047 2048 if (wk->wk_cipher == NULL || 2049 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2050 continue; 2051 2052 wepkey.idx = i; 2053 wepkey.len = wk->wk_keylen; 2054 memset(wepkey.key, 0, sizeof wepkey.key); 2055 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2056 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2057 wepkey.len)); 2058 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2059 sizeof wepkey); 2060 if (error != 0) 2061 return error; 2062 } 2063 return 0; 2064} 2065 2066static int 2067ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2068{ 2069 struct ipw_wpa_ie wpaie; 2070 2071 memset(&wpaie, 0, sizeof(wpaie)); 2072 wpaie.len = htole32(ielen); 2073 /* XXX verify length */ 2074 memcpy(&wpaie.ie, ie, ielen); 2075 DPRINTF(("Setting WPA IE\n")); 2076 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2077} 2078 2079static int 2080ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2081{ 2082 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2083 2084 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2085 DPRINTF(("Setting mandatory BSSID to null\n")); 2086 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2087 } else { 2088 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2089 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2090 bssid, IEEE80211_ADDR_LEN); 2091 } 2092} 2093 2094static int 2095ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2096{ 2097 if (ssidlen == 0) { 2098 /* 2099 * A bug in the firmware breaks the ``don't associate'' 2100 * bit in the scan options command. To compensate for 2101 * this install a bogus ssid when no ssid is specified 2102 * so the firmware won't try to associate. 2103 */ 2104 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2105 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2106 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2107 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2108 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2109 "\x3c\x3d", IEEE80211_NWID_LEN); 2110 } else { 2111#ifdef IPW_DEBUG 2112 if (ipw_debug > 0) { 2113 printf("Setting ESSID to "); 2114 ieee80211_print_essid(ssid, ssidlen); 2115 printf("\n"); 2116 } 2117#endif 2118 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2119 } 2120} 2121 2122static int 2123ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2124{ 2125 struct ipw_scan_options opts; 2126 2127 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2128 opts.channels = htole32(chanmask); 2129 opts.flags = htole32(flags); 2130 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2131} 2132 2133static int 2134ipw_scan(struct ipw_softc *sc) 2135{ 2136 uint32_t params; 2137 int error; 2138 2139 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2140 2141 if (sc->flags & IPW_FLAG_SCANNING) 2142 return (EBUSY); 2143 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2144 2145 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2146 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2147 if (error != 0) 2148 goto done; 2149 2150 /* 2151 * Setup null/bogus ssid so firmware doesn't use any previous 2152 * ssid to try and associate. This is because the ``don't 2153 * associate'' option bit is broken (sigh). 2154 */ 2155 error = ipw_setssid(sc, NULL, 0); 2156 if (error != 0) 2157 goto done; 2158 2159 /* 2160 * NB: the adapter may be disabled on association lost; 2161 * if so just re-enable it to kick off scanning. 2162 */ 2163 DPRINTF(("Starting scan\n")); 2164 sc->sc_scan_timer = 3; 2165 if (sc->flags & IPW_FLAG_ENABLED) { 2166 params = 0; /* XXX? */ 2167 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2168 ¶ms, sizeof(params)); 2169 } else 2170 error = ipw_enable(sc); 2171done: 2172 if (error != 0) { 2173 DPRINTF(("Scan failed\n")); 2174 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2175 } 2176 return (error); 2177} 2178 2179static int 2180ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2181{ 2182 struct ifnet *ifp = sc->sc_ifp; 2183 struct ieee80211com *ic = ifp->if_l2com; 2184 uint32_t data; 2185 int error; 2186 2187 data = htole32(ieee80211_chan2ieee(ic, chan)); 2188 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2189 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2190 if (error == 0) 2191 ipw_setcurchan(sc, chan); 2192 return error; 2193} 2194 2195static void 2196ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2197{ 2198 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2199 struct ipw_softc *sc = ifp->if_softc; 2200 struct ieee80211_node *ni = vap->iv_bss; 2201 struct ipw_security security; 2202 uint32_t data; 2203 int error; 2204 IPW_LOCK_DECL; 2205 2206 IPW_LOCK(sc); 2207 error = ipw_disable(sc); 2208 if (error != 0) 2209 goto done; 2210 2211 memset(&security, 0, sizeof security); 2212 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2213 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2214 security.ciphers = htole32(IPW_CIPHER_NONE); 2215 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2216 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2217 sizeof security); 2218 if (error != 0) 2219 goto done; 2220 2221 data = htole32(vap->iv_rtsthreshold); 2222 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2223 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2224 if (error != 0) 2225 goto done; 2226 2227 data = htole32(vap->iv_fragthreshold); 2228 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2229 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2230 if (error != 0) 2231 goto done; 2232 2233 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2234 error = ipw_setwepkeys(sc); 2235 if (error != 0) 2236 goto done; 2237 2238 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2239 data = htole32(vap->iv_def_txkey); 2240 DPRINTF(("Setting wep tx key index to %u\n", 2241 le32toh(data))); 2242 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2243 sizeof data); 2244 if (error != 0) 2245 goto done; 2246 } 2247 } 2248 2249 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2250 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2251 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2252 if (error != 0) 2253 goto done; 2254 2255 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2256 if (error != 0) 2257 goto done; 2258 2259 error = ipw_setbssid(sc, ni->ni_bssid); 2260 if (error != 0) 2261 goto done; 2262 2263 if (vap->iv_appie_assocreq != NULL) { 2264 struct ieee80211_appie *ie = vap->iv_appie_assocreq; 2265 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2266 if (error != 0) 2267 goto done; 2268 } 2269 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2270 error = ipw_setchannel(sc, ni->ni_chan); 2271 if (error != 0) 2272 goto done; 2273 } 2274 2275 /* lock scan to ap's channel and enable associate */ 2276 error = ipw_setscanopts(sc, 2277 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2278 if (error != 0) 2279 goto done; 2280 2281 error = ipw_enable(sc); /* finally, enable adapter */ 2282 if (error == 0) 2283 sc->flags |= IPW_FLAG_ASSOCIATING; 2284done: 2285 IPW_UNLOCK(sc); 2286} 2287 2288static void 2289ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2290{ 2291 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2292 struct ieee80211_node *ni = vap->iv_bss; 2293 struct ipw_softc *sc = ifp->if_softc; 2294 IPW_LOCK_DECL; 2295 2296 IPW_LOCK(sc); 2297 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2298 /* 2299 * NB: don't try to do this if ipw_stop_master has 2300 * shutdown the firmware and disabled interrupts. 2301 */ 2302 if (sc->flags & IPW_FLAG_FW_INITED) { 2303 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2304 /* 2305 * NB: firmware currently ignores bssid parameter, but 2306 * supply it in case this changes (follow linux driver). 2307 */ 2308 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2309 ni->ni_bssid, IEEE80211_ADDR_LEN); 2310 } 2311 IPW_UNLOCK(sc); 2312} 2313 2314/* 2315 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2316 * It is called on firmware panics or on watchdog timeouts. 2317 */ 2318static void 2319ipw_init_task(void *context, int pending) 2320{ 2321 ipw_init(context); 2322} 2323 2324static void 2325ipw_init(void *priv) 2326{ 2327 struct ipw_softc *sc = priv; 2328 struct ifnet *ifp = sc->sc_ifp; 2329 struct ieee80211com *ic = ifp->if_l2com; 2330 IPW_LOCK_DECL; 2331 2332 IPW_LOCK(sc); 2333 ipw_init_locked(sc); 2334 IPW_UNLOCK(sc); 2335 2336 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2337 ieee80211_start_all(ic); /* start all vap's */ 2338} 2339 2340static void 2341ipw_init_locked(struct ipw_softc *sc) 2342{ 2343 struct ifnet *ifp = sc->sc_ifp; 2344 struct ieee80211com *ic = ifp->if_l2com; 2345 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2346 const struct firmware *fp; 2347 const struct ipw_firmware_hdr *hdr; 2348 const char *fw; 2349 2350 IPW_LOCK_ASSERT(sc); 2351 2352 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2353 ieee80211_state_name[vap->iv_state], sc->flags)); 2354 2355 /* 2356 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2357 * when loading the firmware and we don't want to be called during this 2358 * operation. 2359 */ 2360 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2361 return; 2362 sc->flags |= IPW_FLAG_INIT_LOCKED; 2363 2364 ipw_stop_locked(sc); 2365 2366 if (ipw_reset(sc) != 0) { 2367 device_printf(sc->sc_dev, "could not reset adapter\n"); 2368 goto fail; 2369 } 2370 2371 if (sc->sc_firmware == NULL) { 2372 device_printf(sc->sc_dev, "no firmware\n"); 2373 goto fail; 2374 } 2375 /* NB: consistency already checked on load */ 2376 fp = sc->sc_firmware; 2377 hdr = (const struct ipw_firmware_hdr *)fp->data; 2378 2379 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2380 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2381 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2382 device_printf(sc->sc_dev, "could not load microcode\n"); 2383 goto fail; 2384 } 2385 2386 ipw_stop_master(sc); 2387 2388 /* 2389 * Setup tx, rx and status rings. 2390 */ 2391 sc->txold = IPW_NTBD - 1; 2392 sc->txcur = 0; 2393 sc->txfree = IPW_NTBD - 2; 2394 sc->rxcur = IPW_NRBD - 1; 2395 2396 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2397 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2398 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2399 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2400 2401 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2402 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2403 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2404 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2405 2406 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2407 2408 fw = (const char *)fp->data + sizeof *hdr; 2409 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2410 device_printf(sc->sc_dev, "could not load firmware\n"); 2411 goto fail; 2412 } 2413 2414 sc->flags |= IPW_FLAG_FW_INITED; 2415 2416 /* retrieve information tables base addresses */ 2417 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2418 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2419 2420 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2421 2422 if (ipw_config(sc) != 0) { 2423 device_printf(sc->sc_dev, "device configuration failed\n"); 2424 goto fail; 2425 } 2426 2427 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2428 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2429 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2430 2431 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2432 return; 2433 2434fail: 2435 ipw_stop_locked(sc); 2436 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2437} 2438 2439static int 2440ipw_config(struct ipw_softc *sc) 2441{ 2442 struct ifnet *ifp = sc->sc_ifp; 2443 struct ieee80211com *ic = ifp->if_l2com; 2444 struct ipw_configuration config; 2445 uint32_t data; 2446 int error; 2447 2448 error = ipw_disable(sc); 2449 if (error != 0) 2450 return error; 2451 2452 switch (ic->ic_opmode) { 2453 case IEEE80211_M_STA: 2454 case IEEE80211_M_HOSTAP: 2455 case IEEE80211_M_WDS: /* XXX */ 2456 data = htole32(IPW_MODE_BSS); 2457 break; 2458 case IEEE80211_M_IBSS: 2459 case IEEE80211_M_AHDEMO: 2460 data = htole32(IPW_MODE_IBSS); 2461 break; 2462 case IEEE80211_M_MONITOR: 2463 data = htole32(IPW_MODE_MONITOR); 2464 break; 2465 } 2466 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2467 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2468 if (error != 0) 2469 return error; 2470 2471 if (ic->ic_opmode == IEEE80211_M_IBSS || 2472 ic->ic_opmode == IEEE80211_M_MONITOR) { 2473 error = ipw_setchannel(sc, ic->ic_curchan); 2474 if (error != 0) 2475 return error; 2476 } 2477 2478 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2479 return ipw_enable(sc); 2480 2481 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2482 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2483 if (ic->ic_opmode == IEEE80211_M_IBSS) 2484 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2485 if (ifp->if_flags & IFF_PROMISC) 2486 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2487 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2488 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2489 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2490 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2491 if (error != 0) 2492 return error; 2493 2494 data = htole32(0x3); /* 1, 2 */ 2495 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2496 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2497 if (error != 0) 2498 return error; 2499 2500 /* NB: use the same rate set */ 2501 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2502 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2503 if (error != 0) 2504 return error; 2505 2506 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2507 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2508 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2509 if (error != 0) 2510 return error; 2511 2512 data = htole32(IPW_POWER_MODE_CAM); 2513 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2514 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2515 if (error != 0) 2516 return error; 2517 2518 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2519 data = htole32(32); /* default value */ 2520 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2521 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2522 sizeof data); 2523 if (error != 0) 2524 return error; 2525 } 2526 2527 return 0; 2528} 2529 2530static void 2531ipw_stop(void *priv) 2532{ 2533 struct ipw_softc *sc = priv; 2534 IPW_LOCK_DECL; 2535 2536 IPW_LOCK(sc); 2537 ipw_stop_locked(sc); 2538 IPW_UNLOCK(sc); 2539} 2540 2541static void 2542ipw_stop_locked(struct ipw_softc *sc) 2543{ 2544 struct ifnet *ifp = sc->sc_ifp; 2545 int i; 2546 2547 IPW_LOCK_ASSERT(sc); 2548 2549 callout_stop(&sc->sc_wdtimer); 2550 ipw_stop_master(sc); 2551 2552 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2553 2554 /* 2555 * Release tx buffers. 2556 */ 2557 for (i = 0; i < IPW_NTBD; i++) 2558 ipw_release_sbd(sc, &sc->stbd_list[i]); 2559 2560 sc->sc_tx_timer = 0; 2561 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2562} 2563 2564static int 2565ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2566{ 2567 struct ipw_softc *sc = arg1; 2568 uint32_t i, size, buf[256]; 2569 2570 memset(buf, 0, sizeof buf); 2571 2572 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2573 return SYSCTL_OUT(req, buf, sizeof buf); 2574 2575 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2576 2577 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2578 for (i = 1; i < size; i++) 2579 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2580 2581 return SYSCTL_OUT(req, buf, size); 2582} 2583 2584static int 2585ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2586{ 2587 struct ipw_softc *sc = arg1; 2588 int val; 2589 2590 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2591 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2592 2593 return SYSCTL_OUT(req, &val, sizeof val); 2594} 2595 2596static uint32_t 2597ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2598{ 2599 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2600} 2601 2602static void 2603ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2604{ 2605 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2606} 2607 2608#if 0 2609static int 2610ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2611{ 2612 uint32_t addr, info; 2613 uint16_t count, size; 2614 uint32_t total; 2615 2616 /* addr[4] + count[2] + size[2] */ 2617 addr = MEM_READ_4(sc, sc->table2_base + off); 2618 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2619 2620 count = info >> 16; 2621 size = info & 0xffff; 2622 total = count * size; 2623 2624 if (total > *len) { 2625 *len = total; 2626 return EINVAL; 2627 } 2628 2629 *len = total; 2630 ipw_read_mem_1(sc, addr, buf, total); 2631 2632 return 0; 2633} 2634 2635static void 2636ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2637 bus_size_t count) 2638{ 2639 for (; count > 0; offset++, datap++, count--) { 2640 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2641 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2642 } 2643} 2644#endif 2645 2646static void 2647ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2648 bus_size_t count) 2649{ 2650 for (; count > 0; offset++, datap++, count--) { 2651 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2652 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2653 } 2654} 2655 2656static void 2657ipw_scan_start(struct ieee80211com *ic) 2658{ 2659 struct ifnet *ifp = ic->ic_ifp; 2660 struct ipw_softc *sc = ifp->if_softc; 2661 IPW_LOCK_DECL; 2662 2663 IPW_LOCK(sc); 2664 ipw_scan(sc); 2665 IPW_UNLOCK(sc); 2666} 2667 2668static void 2669ipw_set_channel(struct ieee80211com *ic) 2670{ 2671 struct ifnet *ifp = ic->ic_ifp; 2672 struct ipw_softc *sc = ifp->if_softc; 2673 IPW_LOCK_DECL; 2674 2675 IPW_LOCK(sc); 2676 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2677 ipw_disable(sc); 2678 ipw_setchannel(sc, ic->ic_curchan); 2679 ipw_enable(sc); 2680 } 2681 IPW_UNLOCK(sc); 2682} 2683 2684static void 2685ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2686{ 2687 /* NB: all channels are scanned at once */ 2688} 2689 2690static void 2691ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2692{ 2693 /* NB: don't try to abort scan; wait for firmware to finish */ 2694} 2695 2696static void 2697ipw_scan_end(struct ieee80211com *ic) 2698{ 2699 struct ifnet *ifp = ic->ic_ifp; 2700 struct ipw_softc *sc = ifp->if_softc; 2701 IPW_LOCK_DECL; 2702 2703 IPW_LOCK(sc); 2704 sc->flags &= ~IPW_FLAG_SCANNING; 2705 IPW_UNLOCK(sc); 2706} 2707