1/* $FreeBSD: stable/10/sys/dev/ipw/if_ipw.c 343907 2019-02-08 13:57:28Z avos $ */ 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: stable/10/sys/dev/ipw/if_ipw.c 343907 2019-02-08 13:57:28Z avos $"); 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 [IFNAMSIZ], int, enum ieee80211_opmode, int, 112 const uint8_t [IEEE80211_ADDR_LEN], 113 const uint8_t [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 202MODULE_VERSION(ipw, 1); 203 204static int 205ipw_probe(device_t dev) 206{ 207 const struct ipw_ident *ident; 208 209 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 210 if (pci_get_vendor(dev) == ident->vendor && 211 pci_get_device(dev) == ident->device) { 212 device_set_desc(dev, ident->name); 213 return 0; 214 } 215 } 216 return ENXIO; 217} 218 219/* Base Address Register */ 220#define IPW_PCI_BAR0 0x10 221 222static int 223ipw_attach(device_t dev) 224{ 225 struct ipw_softc *sc = device_get_softc(dev); 226 struct ifnet *ifp; 227 struct ieee80211com *ic; 228 struct ieee80211_channel *c; 229 uint16_t val; 230 int error, i; 231 uint8_t macaddr[IEEE80211_ADDR_LEN]; 232 233 sc->sc_dev = dev; 234 235 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 236 MTX_DEF | MTX_RECURSE); 237 238 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 239 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 240 241 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 242 device_printf(dev, "chip is in D%d power mode " 243 "-- setting to D0\n", pci_get_powerstate(dev)); 244 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 245 } 246 247 pci_write_config(dev, 0x41, 0, 1); 248 249 /* enable bus-mastering */ 250 pci_enable_busmaster(dev); 251 252 sc->mem_rid = IPW_PCI_BAR0; 253 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 254 RF_ACTIVE); 255 if (sc->mem == NULL) { 256 device_printf(dev, "could not allocate memory resource\n"); 257 goto fail; 258 } 259 260 sc->sc_st = rman_get_bustag(sc->mem); 261 sc->sc_sh = rman_get_bushandle(sc->mem); 262 263 sc->irq_rid = 0; 264 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 265 RF_ACTIVE | RF_SHAREABLE); 266 if (sc->irq == NULL) { 267 device_printf(dev, "could not allocate interrupt resource\n"); 268 goto fail1; 269 } 270 271 if (ipw_reset(sc) != 0) { 272 device_printf(dev, "could not reset adapter\n"); 273 goto fail2; 274 } 275 276 if (ipw_dma_alloc(sc) != 0) { 277 device_printf(dev, "could not allocate DMA resources\n"); 278 goto fail2; 279 } 280 281 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 282 if (ifp == NULL) { 283 device_printf(dev, "can not if_alloc()\n"); 284 goto fail3; 285 } 286 ic = ifp->if_l2com; 287 288 ifp->if_softc = sc; 289 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 290 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 291 ifp->if_init = ipw_init; 292 ifp->if_ioctl = ipw_ioctl; 293 ifp->if_start = ipw_start; 294 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 295 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 296 IFQ_SET_READY(&ifp->if_snd); 297 298 ic->ic_ifp = ifp; 299 ic->ic_opmode = IEEE80211_M_STA; 300 ic->ic_phytype = IEEE80211_T_DS; 301 302 /* set device capabilities */ 303 ic->ic_caps = 304 IEEE80211_C_STA /* station mode supported */ 305 | IEEE80211_C_IBSS /* IBSS mode supported */ 306 | IEEE80211_C_MONITOR /* monitor mode supported */ 307 | IEEE80211_C_PMGT /* power save supported */ 308 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 309 | IEEE80211_C_WPA /* 802.11i supported */ 310 ; 311 312 /* read MAC address from EEPROM */ 313 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 314 macaddr[0] = val >> 8; 315 macaddr[1] = val & 0xff; 316 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 317 macaddr[2] = val >> 8; 318 macaddr[3] = val & 0xff; 319 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 320 macaddr[4] = val >> 8; 321 macaddr[5] = val & 0xff; 322 323 /* set supported .11b channels (read from EEPROM) */ 324 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 325 val = 0x7ff; /* default to channels 1-11 */ 326 val <<= 1; 327 for (i = 1; i < 16; i++) { 328 if (val & (1 << i)) { 329 c = &ic->ic_channels[ic->ic_nchans++]; 330 c->ic_freq = ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 331 c->ic_flags = IEEE80211_CHAN_B; 332 c->ic_ieee = i; 333 } 334 } 335 336 /* check support for radio transmitter switch in EEPROM */ 337 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 338 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 339 340 ieee80211_ifattach(ic, macaddr); 341 ic->ic_scan_start = ipw_scan_start; 342 ic->ic_scan_end = ipw_scan_end; 343 ic->ic_set_channel = ipw_set_channel; 344 ic->ic_scan_curchan = ipw_scan_curchan; 345 ic->ic_scan_mindwell = ipw_scan_mindwell; 346 ic->ic_raw_xmit = ipw_raw_xmit; 347 348 ic->ic_vap_create = ipw_vap_create; 349 ic->ic_vap_delete = ipw_vap_delete; 350 351 ieee80211_radiotap_attach(ic, 352 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 353 IPW_TX_RADIOTAP_PRESENT, 354 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 355 IPW_RX_RADIOTAP_PRESENT); 356 357 /* 358 * Add a few sysctl knobs. 359 */ 360 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 361 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 362 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 363 "radio transmitter switch state (0=off, 1=on)"); 364 365 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 366 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 367 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 368 "statistics"); 369 370 /* 371 * Hook our interrupt after all initialization is complete. 372 */ 373 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 374 NULL, ipw_intr, sc, &sc->sc_ih); 375 if (error != 0) { 376 device_printf(dev, "could not set up interrupt\n"); 377 goto fail4; 378 } 379 380 if (bootverbose) 381 ieee80211_announce(ic); 382 383 return 0; 384fail4: 385 if_free(ifp); 386fail3: 387 ipw_release(sc); 388fail2: 389 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 390fail1: 391 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 392fail: 393 mtx_destroy(&sc->sc_mtx); 394 return ENXIO; 395} 396 397static int 398ipw_detach(device_t dev) 399{ 400 struct ipw_softc *sc = device_get_softc(dev); 401 struct ifnet *ifp = sc->sc_ifp; 402 struct ieee80211com *ic = ifp->if_l2com; 403 404 ieee80211_draintask(ic, &sc->sc_init_task); 405 ipw_stop(sc); 406 407 ieee80211_ifdetach(ic); 408 409 callout_drain(&sc->sc_wdtimer); 410 411 ipw_release(sc); 412 413 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 414 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 415 416 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 417 418 if_free(ifp); 419 420 if (sc->sc_firmware != NULL) { 421 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 422 sc->sc_firmware = NULL; 423 } 424 425 mtx_destroy(&sc->sc_mtx); 426 427 return 0; 428} 429 430static struct ieee80211vap * 431ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 432 enum ieee80211_opmode opmode, int flags, 433 const uint8_t bssid[IEEE80211_ADDR_LEN], 434 const uint8_t mac[IEEE80211_ADDR_LEN]) 435{ 436 struct ifnet *ifp = ic->ic_ifp; 437 struct ipw_softc *sc = ifp->if_softc; 438 struct ipw_vap *ivp; 439 struct ieee80211vap *vap; 440 const struct firmware *fp; 441 const struct ipw_firmware_hdr *hdr; 442 const char *imagename; 443 444 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 445 return NULL; 446 447 switch (opmode) { 448 case IEEE80211_M_STA: 449 imagename = "ipw_bss"; 450 break; 451 case IEEE80211_M_IBSS: 452 imagename = "ipw_ibss"; 453 break; 454 case IEEE80211_M_MONITOR: 455 imagename = "ipw_monitor"; 456 break; 457 default: 458 return NULL; 459 } 460 461 /* 462 * Load firmware image using the firmware(9) subsystem. Doing 463 * this unlocked is ok since we're single-threaded by the 464 * 802.11 layer. 465 */ 466 if (sc->sc_firmware == NULL || 467 strcmp(sc->sc_firmware->name, imagename) != 0) { 468 if (sc->sc_firmware != NULL) 469 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 470 sc->sc_firmware = firmware_get(imagename); 471 } 472 if (sc->sc_firmware == NULL) { 473 device_printf(sc->sc_dev, 474 "could not load firmware image '%s'\n", imagename); 475 return NULL; 476 } 477 fp = sc->sc_firmware; 478 if (fp->datasize < sizeof *hdr) { 479 device_printf(sc->sc_dev, 480 "firmware image too short %zu\n", fp->datasize); 481 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 482 sc->sc_firmware = NULL; 483 return NULL; 484 } 485 hdr = (const struct ipw_firmware_hdr *)fp->data; 486 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 487 le32toh(hdr->ucodesz)) { 488 device_printf(sc->sc_dev, 489 "firmware image too short %zu\n", fp->datasize); 490 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 491 sc->sc_firmware = NULL; 492 return NULL; 493 } 494 495 ivp = (struct ipw_vap *) malloc(sizeof(struct ipw_vap), 496 M_80211_VAP, M_NOWAIT | M_ZERO); 497 if (ivp == NULL) 498 return NULL; 499 vap = &ivp->vap; 500 501 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 502 /* override with driver methods */ 503 ivp->newstate = vap->iv_newstate; 504 vap->iv_newstate = ipw_newstate; 505 506 /* complete setup */ 507 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status); 508 ic->ic_opmode = opmode; 509 return vap; 510} 511 512static void 513ipw_vap_delete(struct ieee80211vap *vap) 514{ 515 struct ipw_vap *ivp = IPW_VAP(vap); 516 517 ieee80211_vap_detach(vap); 518 free(ivp, M_80211_VAP); 519} 520 521static int 522ipw_dma_alloc(struct ipw_softc *sc) 523{ 524 struct ipw_soft_bd *sbd; 525 struct ipw_soft_hdr *shdr; 526 struct ipw_soft_buf *sbuf; 527 bus_addr_t physaddr; 528 int error, i; 529 530 /* 531 * Allocate parent DMA tag for subsequent allocations. 532 */ 533 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 534 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 535 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 536 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat); 537 if (error != 0) { 538 device_printf(sc->sc_dev, "could not create parent DMA tag\n"); 539 goto fail; 540 } 541 542 /* 543 * Allocate and map tx ring. 544 */ 545 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 546 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 547 NULL, &sc->tbd_dmat); 548 if (error != 0) { 549 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 550 goto fail; 551 } 552 553 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 554 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 555 if (error != 0) { 556 device_printf(sc->sc_dev, 557 "could not allocate tx ring DMA memory\n"); 558 goto fail; 559 } 560 561 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 562 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 563 if (error != 0) { 564 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 565 goto fail; 566 } 567 568 /* 569 * Allocate and map rx ring. 570 */ 571 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 572 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 573 NULL, &sc->rbd_dmat); 574 if (error != 0) { 575 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 576 goto fail; 577 } 578 579 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 580 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 581 if (error != 0) { 582 device_printf(sc->sc_dev, 583 "could not allocate rx ring DMA memory\n"); 584 goto fail; 585 } 586 587 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 588 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 589 if (error != 0) { 590 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 591 goto fail; 592 } 593 594 /* 595 * Allocate and map status ring. 596 */ 597 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 598 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 599 NULL, NULL, &sc->status_dmat); 600 if (error != 0) { 601 device_printf(sc->sc_dev, 602 "could not create status ring DMA tag\n"); 603 goto fail; 604 } 605 606 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 607 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 608 if (error != 0) { 609 device_printf(sc->sc_dev, 610 "could not allocate status ring DMA memory\n"); 611 goto fail; 612 } 613 614 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 615 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 616 0); 617 if (error != 0) { 618 device_printf(sc->sc_dev, 619 "could not map status ring DMA memory\n"); 620 goto fail; 621 } 622 623 /* 624 * Allocate command DMA map. 625 */ 626 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 627 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 628 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 629 if (error != 0) { 630 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 631 goto fail; 632 } 633 634 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 635 if (error != 0) { 636 device_printf(sc->sc_dev, 637 "could not create command DMA map\n"); 638 goto fail; 639 } 640 641 /* 642 * Allocate headers DMA maps. 643 */ 644 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 645 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 646 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 647 if (error != 0) { 648 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 649 goto fail; 650 } 651 652 SLIST_INIT(&sc->free_shdr); 653 for (i = 0; i < IPW_NDATA; i++) { 654 shdr = &sc->shdr_list[i]; 655 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 656 if (error != 0) { 657 device_printf(sc->sc_dev, 658 "could not create header DMA map\n"); 659 goto fail; 660 } 661 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 662 } 663 664 /* 665 * Allocate tx buffers DMA maps. 666 */ 667 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 668 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 669 NULL, NULL, &sc->txbuf_dmat); 670 if (error != 0) { 671 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 672 goto fail; 673 } 674 675 SLIST_INIT(&sc->free_sbuf); 676 for (i = 0; i < IPW_NDATA; i++) { 677 sbuf = &sc->tx_sbuf_list[i]; 678 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 679 if (error != 0) { 680 device_printf(sc->sc_dev, 681 "could not create tx DMA map\n"); 682 goto fail; 683 } 684 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 685 } 686 687 /* 688 * Initialize tx ring. 689 */ 690 for (i = 0; i < IPW_NTBD; i++) { 691 sbd = &sc->stbd_list[i]; 692 sbd->bd = &sc->tbd_list[i]; 693 sbd->type = IPW_SBD_TYPE_NOASSOC; 694 } 695 696 /* 697 * Pre-allocate rx buffers and DMA maps. 698 */ 699 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 700 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 701 NULL, &sc->rxbuf_dmat); 702 if (error != 0) { 703 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 704 goto fail; 705 } 706 707 for (i = 0; i < IPW_NRBD; i++) { 708 sbd = &sc->srbd_list[i]; 709 sbuf = &sc->rx_sbuf_list[i]; 710 sbd->bd = &sc->rbd_list[i]; 711 712 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 713 if (sbuf->m == NULL) { 714 device_printf(sc->sc_dev, 715 "could not allocate rx mbuf\n"); 716 error = ENOMEM; 717 goto fail; 718 } 719 720 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 721 if (error != 0) { 722 device_printf(sc->sc_dev, 723 "could not create rx DMA map\n"); 724 goto fail; 725 } 726 727 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 728 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 729 &physaddr, 0); 730 if (error != 0) { 731 device_printf(sc->sc_dev, 732 "could not map rx DMA memory\n"); 733 goto fail; 734 } 735 736 sbd->type = IPW_SBD_TYPE_DATA; 737 sbd->priv = sbuf; 738 sbd->bd->physaddr = htole32(physaddr); 739 sbd->bd->len = htole32(MCLBYTES); 740 } 741 742 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 743 744 return 0; 745 746fail: ipw_release(sc); 747 return error; 748} 749 750static void 751ipw_release(struct ipw_softc *sc) 752{ 753 struct ipw_soft_buf *sbuf; 754 int i; 755 756 if (sc->parent_dmat != NULL) { 757 bus_dma_tag_destroy(sc->parent_dmat); 758 } 759 760 if (sc->tbd_dmat != NULL) { 761 if (sc->stbd_list != NULL) { 762 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 763 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, 764 sc->tbd_map); 765 } 766 bus_dma_tag_destroy(sc->tbd_dmat); 767 } 768 769 if (sc->rbd_dmat != NULL) { 770 if (sc->rbd_list != NULL) { 771 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 772 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 773 sc->rbd_map); 774 } 775 bus_dma_tag_destroy(sc->rbd_dmat); 776 } 777 778 if (sc->status_dmat != NULL) { 779 if (sc->status_list != NULL) { 780 bus_dmamap_unload(sc->status_dmat, sc->status_map); 781 bus_dmamem_free(sc->status_dmat, sc->status_list, 782 sc->status_map); 783 } 784 bus_dma_tag_destroy(sc->status_dmat); 785 } 786 787 for (i = 0; i < IPW_NTBD; i++) 788 ipw_release_sbd(sc, &sc->stbd_list[i]); 789 790 if (sc->cmd_dmat != NULL) { 791 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 792 bus_dma_tag_destroy(sc->cmd_dmat); 793 } 794 795 if (sc->hdr_dmat != NULL) { 796 for (i = 0; i < IPW_NDATA; i++) 797 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 798 bus_dma_tag_destroy(sc->hdr_dmat); 799 } 800 801 if (sc->txbuf_dmat != NULL) { 802 for (i = 0; i < IPW_NDATA; i++) { 803 bus_dmamap_destroy(sc->txbuf_dmat, 804 sc->tx_sbuf_list[i].map); 805 } 806 bus_dma_tag_destroy(sc->txbuf_dmat); 807 } 808 809 if (sc->rxbuf_dmat != NULL) { 810 for (i = 0; i < IPW_NRBD; i++) { 811 sbuf = &sc->rx_sbuf_list[i]; 812 if (sbuf->m != NULL) { 813 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 814 BUS_DMASYNC_POSTREAD); 815 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 816 m_freem(sbuf->m); 817 } 818 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 819 } 820 bus_dma_tag_destroy(sc->rxbuf_dmat); 821 } 822} 823 824static int 825ipw_shutdown(device_t dev) 826{ 827 struct ipw_softc *sc = device_get_softc(dev); 828 829 ipw_stop(sc); 830 831 return 0; 832} 833 834static int 835ipw_suspend(device_t dev) 836{ 837 struct ipw_softc *sc = device_get_softc(dev); 838 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 839 840 ieee80211_suspend_all(ic); 841 return 0; 842} 843 844static int 845ipw_resume(device_t dev) 846{ 847 struct ipw_softc *sc = device_get_softc(dev); 848 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 849 850 pci_write_config(dev, 0x41, 0, 1); 851 852 ieee80211_resume_all(ic); 853 return 0; 854} 855 856static int 857ipw_cvtrate(int ipwrate) 858{ 859 switch (ipwrate) { 860 case IPW_RATE_DS1: return 2; 861 case IPW_RATE_DS2: return 4; 862 case IPW_RATE_DS5: return 11; 863 case IPW_RATE_DS11: return 22; 864 } 865 return 0; 866} 867 868/* 869 * The firmware automatically adapts the transmit speed. We report its current 870 * value here. 871 */ 872static void 873ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 874{ 875 struct ieee80211vap *vap = ifp->if_softc; 876 struct ieee80211com *ic = vap->iv_ic; 877 struct ipw_softc *sc = ic->ic_ifp->if_softc; 878 879 /* read current transmission rate from adapter */ 880 vap->iv_bss->ni_txrate = ipw_cvtrate( 881 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 882 ieee80211_media_status(ifp, imr); 883} 884 885static int 886ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 887{ 888 struct ipw_vap *ivp = IPW_VAP(vap); 889 struct ieee80211com *ic = vap->iv_ic; 890 struct ifnet *ifp = ic->ic_ifp; 891 struct ipw_softc *sc = ifp->if_softc; 892 enum ieee80211_state ostate; 893 894 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 895 ieee80211_state_name[vap->iv_state], 896 ieee80211_state_name[nstate], sc->flags)); 897 898 ostate = vap->iv_state; 899 IEEE80211_UNLOCK(ic); 900 901 switch (nstate) { 902 case IEEE80211_S_RUN: 903 if (ic->ic_opmode == IEEE80211_M_IBSS) { 904 /* 905 * XXX when joining an ibss network we are called 906 * with a SCAN -> RUN transition on scan complete. 907 * Use that to call ipw_assoc. On completing the 908 * join we are then called again with an AUTH -> RUN 909 * transition and we want to do nothing. This is 910 * all totally bogus and needs to be redone. 911 */ 912 if (ostate == IEEE80211_S_SCAN) 913 ipw_assoc(ic, vap); 914 } 915 break; 916 917 case IEEE80211_S_INIT: 918 if (sc->flags & IPW_FLAG_ASSOCIATED) 919 ipw_disassoc(ic, vap); 920 break; 921 922 case IEEE80211_S_AUTH: 923 /* 924 * Move to ASSOC state after the ipw_assoc() call. Firmware 925 * takes care of authentication, after the call we'll receive 926 * only an assoc response which would otherwise be discared 927 * if we are still in AUTH state. 928 */ 929 nstate = IEEE80211_S_ASSOC; 930 ipw_assoc(ic, vap); 931 break; 932 933 case IEEE80211_S_ASSOC: 934 /* 935 * If we are not transitioning from AUTH then resend the 936 * association request. 937 */ 938 if (ostate != IEEE80211_S_AUTH) 939 ipw_assoc(ic, vap); 940 break; 941 942 default: 943 break; 944 } 945 IEEE80211_LOCK(ic); 946 return ivp->newstate(vap, nstate, arg); 947} 948 949/* 950 * Read 16 bits at address 'addr' from the serial EEPROM. 951 */ 952static uint16_t 953ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 954{ 955 uint32_t tmp; 956 uint16_t val; 957 int n; 958 959 /* clock C once before the first command */ 960 IPW_EEPROM_CTL(sc, 0); 961 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 962 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 963 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 964 965 /* write start bit (1) */ 966 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 967 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 968 969 /* write READ opcode (10) */ 970 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 971 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 972 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 973 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 974 975 /* write address A7-A0 */ 976 for (n = 7; n >= 0; n--) { 977 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 978 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 979 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 980 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 981 } 982 983 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 984 985 /* read data Q15-Q0 */ 986 val = 0; 987 for (n = 15; n >= 0; n--) { 988 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 989 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 990 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 991 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 992 } 993 994 IPW_EEPROM_CTL(sc, 0); 995 996 /* clear Chip Select and clock C */ 997 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 998 IPW_EEPROM_CTL(sc, 0); 999 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 1000 1001 return le16toh(val); 1002} 1003 1004static void 1005ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1006{ 1007 struct ipw_cmd *cmd; 1008 1009 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1010 1011 cmd = mtod(sbuf->m, struct ipw_cmd *); 1012 1013 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 1014 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 1015 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 1016 le32toh(cmd->status))); 1017 1018 sc->flags &= ~IPW_FLAG_BUSY; 1019 wakeup(sc); 1020} 1021 1022static void 1023ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 1024{ 1025#define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1026 struct ifnet *ifp = sc->sc_ifp; 1027 struct ieee80211com *ic = ifp->if_l2com; 1028 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1029 uint32_t state; 1030 1031 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1032 1033 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1034 1035 switch (state) { 1036 case IPW_STATE_ASSOCIATED: 1037 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1038 IEEESTATE(vap), sc->flags)); 1039 /* XXX suppress state change in case the fw auto-associates */ 1040 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1041 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1042 IEEESTATE(vap), sc->flags)); 1043 break; 1044 } 1045 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1046 sc->flags |= IPW_FLAG_ASSOCIATED; 1047 break; 1048 1049 case IPW_STATE_SCANNING: 1050 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1051 IEEESTATE(vap), sc->flags)); 1052 /* 1053 * NB: Check driver state for association on assoc 1054 * loss as the firmware will immediately start to 1055 * scan and we would treat it as a beacon miss if 1056 * we checked the 802.11 layer state. 1057 */ 1058 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1059 IPW_UNLOCK(sc); 1060 /* XXX probably need to issue disassoc to fw */ 1061 ieee80211_beacon_miss(ic); 1062 IPW_LOCK(sc); 1063 } 1064 break; 1065 1066 case IPW_STATE_SCAN_COMPLETE: 1067 /* 1068 * XXX For some reason scan requests generate scan 1069 * started + scan done events before any traffic is 1070 * received (e.g. probe response frames). We work 1071 * around this by marking the HACK flag and skipping 1072 * the first scan complete event. 1073 */ 1074 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1075 IEEESTATE(vap), sc->flags)); 1076 if (sc->flags & IPW_FLAG_HACK) { 1077 sc->flags &= ~IPW_FLAG_HACK; 1078 break; 1079 } 1080 if (sc->flags & IPW_FLAG_SCANNING) { 1081 IPW_UNLOCK(sc); 1082 ieee80211_scan_done(vap); 1083 IPW_LOCK(sc); 1084 sc->flags &= ~IPW_FLAG_SCANNING; 1085 sc->sc_scan_timer = 0; 1086 } 1087 break; 1088 1089 case IPW_STATE_ASSOCIATION_LOST: 1090 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1091 IEEESTATE(vap), sc->flags)); 1092 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1093 if (vap->iv_state == IEEE80211_S_RUN) { 1094 IPW_UNLOCK(sc); 1095 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1096 IPW_LOCK(sc); 1097 } 1098 break; 1099 1100 case IPW_STATE_DISABLED: 1101 /* XXX? is this right? */ 1102 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1103 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1104 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1105 IEEESTATE(vap), sc->flags)); 1106 break; 1107 1108 case IPW_STATE_RADIO_DISABLED: 1109 device_printf(sc->sc_dev, "radio turned off\n"); 1110 ieee80211_notify_radio(ic, 0); 1111 ipw_stop_locked(sc); 1112 /* XXX start polling thread to detect radio on */ 1113 break; 1114 1115 default: 1116 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1117 __func__, state, IEEESTATE(vap), sc->flags)); 1118 break; 1119 } 1120#undef IEEESTATE 1121} 1122 1123/* 1124 * Set driver state for current channel. 1125 */ 1126static void 1127ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1128{ 1129 struct ifnet *ifp = sc->sc_ifp; 1130 struct ieee80211com *ic = ifp->if_l2com; 1131 1132 ic->ic_curchan = chan; 1133 ieee80211_radiotap_chan_change(ic); 1134} 1135 1136/* 1137 * XXX: Hack to set the current channel to the value advertised in beacons or 1138 * probe responses. Only used during AP detection. 1139 */ 1140static void 1141ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1142{ 1143 struct ifnet *ifp = sc->sc_ifp; 1144 struct ieee80211com *ic = ifp->if_l2com; 1145 struct ieee80211_channel *c; 1146 struct ieee80211_frame *wh; 1147 uint8_t subtype; 1148 uint8_t *frm, *efrm; 1149 1150 wh = mtod(m, struct ieee80211_frame *); 1151 1152 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1153 return; 1154 1155 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1156 1157 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1158 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1159 return; 1160 1161 /* XXX use ieee80211_parse_beacon */ 1162 frm = (uint8_t *)(wh + 1); 1163 efrm = mtod(m, uint8_t *) + m->m_len; 1164 1165 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1166 while (frm < efrm) { 1167 if (*frm == IEEE80211_ELEMID_DSPARMS) 1168#if IEEE80211_CHAN_MAX < 255 1169 if (frm[2] <= IEEE80211_CHAN_MAX) 1170#endif 1171 { 1172 DPRINTF(("Fixing channel to %d\n", frm[2])); 1173 c = ieee80211_find_channel(ic, 1174 ieee80211_ieee2mhz(frm[2], 0), 1175 IEEE80211_CHAN_B); 1176 if (c == NULL) 1177 c = &ic->ic_channels[0]; 1178 ipw_setcurchan(sc, c); 1179 } 1180 1181 frm += frm[1] + 2; 1182 } 1183} 1184 1185static void 1186ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1187 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1188{ 1189 struct ifnet *ifp = sc->sc_ifp; 1190 struct ieee80211com *ic = ifp->if_l2com; 1191 struct mbuf *mnew, *m; 1192 struct ieee80211_node *ni; 1193 bus_addr_t physaddr; 1194 int error; 1195 int8_t rssi, nf; 1196 1197 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1198 status->rssi)); 1199 1200 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1201 le32toh(status->len) > MCLBYTES) 1202 return; 1203 1204 /* 1205 * Try to allocate a new mbuf for this ring element and load it before 1206 * processing the current mbuf. If the ring element cannot be loaded, 1207 * drop the received packet and reuse the old mbuf. In the unlikely 1208 * case that the old mbuf can't be reloaded either, explicitly panic. 1209 */ 1210 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1211 if (mnew == NULL) { 1212 ifp->if_ierrors++; 1213 return; 1214 } 1215 1216 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1217 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1218 1219 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1220 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1221 if (error != 0) { 1222 m_freem(mnew); 1223 1224 /* try to reload the old mbuf */ 1225 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1226 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1227 &physaddr, 0); 1228 if (error != 0) { 1229 /* very unlikely that it will fail... */ 1230 panic("%s: could not load old rx mbuf", 1231 device_get_name(sc->sc_dev)); 1232 } 1233 ifp->if_ierrors++; 1234 return; 1235 } 1236 1237 /* 1238 * New mbuf successfully loaded, update Rx ring and continue 1239 * processing. 1240 */ 1241 m = sbuf->m; 1242 sbuf->m = mnew; 1243 sbd->bd->physaddr = htole32(physaddr); 1244 1245 /* finalize mbuf */ 1246 m->m_pkthdr.rcvif = ifp; 1247 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1248 1249 rssi = status->rssi + IPW_RSSI_TO_DBM; 1250 nf = -95; 1251 if (ieee80211_radiotap_active(ic)) { 1252 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1253 1254 tap->wr_flags = 0; 1255 tap->wr_antsignal = rssi; 1256 tap->wr_antnoise = nf; 1257 } 1258 1259 if (sc->flags & IPW_FLAG_SCANNING) 1260 ipw_fix_channel(sc, m); 1261 1262 IPW_UNLOCK(sc); 1263 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1264 if (ni != NULL) { 1265 (void) ieee80211_input(ni, m, rssi - nf, nf); 1266 ieee80211_free_node(ni); 1267 } else 1268 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1269 IPW_LOCK(sc); 1270 1271 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1272} 1273 1274static void 1275ipw_rx_intr(struct ipw_softc *sc) 1276{ 1277 struct ipw_status *status; 1278 struct ipw_soft_bd *sbd; 1279 struct ipw_soft_buf *sbuf; 1280 uint32_t r, i; 1281 1282 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1283 return; 1284 1285 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1286 1287 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1288 1289 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1290 status = &sc->status_list[i]; 1291 sbd = &sc->srbd_list[i]; 1292 sbuf = sbd->priv; 1293 1294 switch (le16toh(status->code) & 0xf) { 1295 case IPW_STATUS_CODE_COMMAND: 1296 ipw_rx_cmd_intr(sc, sbuf); 1297 break; 1298 1299 case IPW_STATUS_CODE_NEWSTATE: 1300 ipw_rx_newstate_intr(sc, sbuf); 1301 break; 1302 1303 case IPW_STATUS_CODE_DATA_802_3: 1304 case IPW_STATUS_CODE_DATA_802_11: 1305 ipw_rx_data_intr(sc, status, sbd, sbuf); 1306 break; 1307 1308 case IPW_STATUS_CODE_NOTIFICATION: 1309 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1310 le32toh(status->len), status->flags)); 1311 /* XXX maybe drive state machine AUTH->ASSOC? */ 1312 break; 1313 1314 default: 1315 device_printf(sc->sc_dev, "unexpected status code %u\n", 1316 le16toh(status->code)); 1317 } 1318 1319 /* firmware was killed, stop processing received frames */ 1320 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1321 return; 1322 1323 sbd->bd->flags = 0; 1324 } 1325 1326 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1327 1328 /* kick the firmware */ 1329 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1330 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1331} 1332 1333static void 1334ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1335{ 1336 struct ipw_soft_hdr *shdr; 1337 struct ipw_soft_buf *sbuf; 1338 1339 switch (sbd->type) { 1340 case IPW_SBD_TYPE_COMMAND: 1341 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1342 BUS_DMASYNC_POSTWRITE); 1343 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1344 break; 1345 1346 case IPW_SBD_TYPE_HEADER: 1347 shdr = sbd->priv; 1348 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1349 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1350 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1351 break; 1352 1353 case IPW_SBD_TYPE_DATA: 1354 sbuf = sbd->priv; 1355 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1356 BUS_DMASYNC_POSTWRITE); 1357 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1358 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1359 1360 ieee80211_tx_complete(sbuf->ni, sbuf->m, 0/*XXX*/); 1361 1362 sc->sc_tx_timer = 0; 1363 break; 1364 } 1365 1366 sbd->type = IPW_SBD_TYPE_NOASSOC; 1367} 1368 1369static void 1370ipw_tx_intr(struct ipw_softc *sc) 1371{ 1372 struct ifnet *ifp = sc->sc_ifp; 1373 struct ipw_soft_bd *sbd; 1374 uint32_t r, i; 1375 1376 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1377 return; 1378 1379 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1380 1381 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1382 sbd = &sc->stbd_list[i]; 1383 1384 if (sbd->type == IPW_SBD_TYPE_DATA) 1385 ifp->if_opackets++; 1386 1387 ipw_release_sbd(sc, sbd); 1388 sc->txfree++; 1389 } 1390 1391 /* remember what the firmware has processed */ 1392 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1393 1394 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1395 ipw_start_locked(ifp); 1396} 1397 1398static void 1399ipw_fatal_error_intr(struct ipw_softc *sc) 1400{ 1401 struct ifnet *ifp = sc->sc_ifp; 1402 struct ieee80211com *ic = ifp->if_l2com; 1403 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1404 1405 device_printf(sc->sc_dev, "firmware error\n"); 1406 if (vap != NULL) { 1407 IPW_UNLOCK(sc); 1408 ieee80211_cancel_scan(vap); 1409 IPW_LOCK(sc); 1410 } 1411 ieee80211_runtask(ic, &sc->sc_init_task); 1412} 1413 1414static void 1415ipw_intr(void *arg) 1416{ 1417 struct ipw_softc *sc = arg; 1418 uint32_t r; 1419 1420 IPW_LOCK(sc); 1421 1422 r = CSR_READ_4(sc, IPW_CSR_INTR); 1423 if (r == 0 || r == 0xffffffff) 1424 goto done; 1425 1426 /* disable interrupts */ 1427 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1428 1429 /* acknowledge all interrupts */ 1430 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1431 1432 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1433 ipw_fatal_error_intr(sc); 1434 goto done; 1435 } 1436 1437 if (r & IPW_INTR_FW_INIT_DONE) 1438 wakeup(sc); 1439 1440 if (r & IPW_INTR_RX_TRANSFER) 1441 ipw_rx_intr(sc); 1442 1443 if (r & IPW_INTR_TX_TRANSFER) 1444 ipw_tx_intr(sc); 1445 1446 /* re-enable interrupts */ 1447 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1448done: 1449 IPW_UNLOCK(sc); 1450} 1451 1452static void 1453ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1454{ 1455 if (error != 0) 1456 return; 1457 1458 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1459 1460 *(bus_addr_t *)arg = segs[0].ds_addr; 1461} 1462 1463static const char * 1464ipw_cmdname(int cmd) 1465{ 1466#define N(a) (sizeof(a) / sizeof(a[0])) 1467 static const struct { 1468 int cmd; 1469 const char *name; 1470 } cmds[] = { 1471 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1472 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1473 { IPW_CMD_DISABLE, "DISABLE" }, 1474 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1475 { IPW_CMD_ENABLE, "ENABLE" }, 1476 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1477 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1478 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1479 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1480 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1481 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1482 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1483 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1484 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1485 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1486 { IPW_CMD_SET_MODE, "SET_MODE" }, 1487 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1488 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1489 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1490 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1491 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1492 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1493 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1494 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1495 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1496 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1497 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1498 1499 }; 1500 static char buf[12]; 1501 int i; 1502 1503 for (i = 0; i < N(cmds); i++) 1504 if (cmds[i].cmd == cmd) 1505 return cmds[i].name; 1506 snprintf(buf, sizeof(buf), "%u", cmd); 1507 return buf; 1508#undef N 1509} 1510 1511/* 1512 * Send a command to the firmware and wait for the acknowledgement. 1513 */ 1514static int 1515ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1516{ 1517 struct ipw_soft_bd *sbd; 1518 bus_addr_t physaddr; 1519 int error; 1520 1521 IPW_LOCK_ASSERT(sc); 1522 1523 if (sc->flags & IPW_FLAG_BUSY) { 1524 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1525 __func__, ipw_cmdname(type)); 1526 return EAGAIN; 1527 } 1528 sc->flags |= IPW_FLAG_BUSY; 1529 1530 sbd = &sc->stbd_list[sc->txcur]; 1531 1532 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1533 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1534 if (error != 0) { 1535 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1536 sc->flags &= ~IPW_FLAG_BUSY; 1537 return error; 1538 } 1539 1540 sc->cmd.type = htole32(type); 1541 sc->cmd.subtype = 0; 1542 sc->cmd.len = htole32(len); 1543 sc->cmd.seq = 0; 1544 memcpy(sc->cmd.data, data, len); 1545 1546 sbd->type = IPW_SBD_TYPE_COMMAND; 1547 sbd->bd->physaddr = htole32(physaddr); 1548 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1549 sbd->bd->nfrag = 1; 1550 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1551 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1552 1553 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1554 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1555 1556#ifdef IPW_DEBUG 1557 if (ipw_debug >= 4) { 1558 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1559 0, 0, len); 1560 /* Print the data buffer in the higher debug level */ 1561 if (ipw_debug >= 9 && len > 0) { 1562 printf(" data: 0x"); 1563 for (int i = 1; i <= len; i++) 1564 printf("%1D", (u_char *)data + len - i, ""); 1565 } 1566 printf("\n"); 1567 } 1568#endif 1569 1570 /* kick firmware */ 1571 sc->txfree--; 1572 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1573 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1574 1575 /* wait at most one second for command to complete */ 1576 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1577 if (error != 0) { 1578 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1579 __func__, ipw_cmdname(type), error); 1580 sc->flags &= ~IPW_FLAG_BUSY; 1581 return (error); 1582 } 1583 return (0); 1584} 1585 1586static int 1587ipw_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1588{ 1589 struct ipw_softc *sc = ifp->if_softc; 1590 struct ieee80211com *ic = ifp->if_l2com; 1591 struct ieee80211vap *vap = ni->ni_vap; 1592 struct ieee80211_frame *wh; 1593 struct ipw_soft_bd *sbd; 1594 struct ipw_soft_hdr *shdr; 1595 struct ipw_soft_buf *sbuf; 1596 struct ieee80211_key *k; 1597 struct mbuf *mnew; 1598 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1599 bus_addr_t physaddr; 1600 int nsegs, error, i; 1601 1602 wh = mtod(m0, struct ieee80211_frame *); 1603 1604 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1605 k = ieee80211_crypto_encap(ni, m0); 1606 if (k == NULL) { 1607 m_freem(m0); 1608 return ENOBUFS; 1609 } 1610 /* packet header may have moved, reset our local pointer */ 1611 wh = mtod(m0, struct ieee80211_frame *); 1612 } 1613 1614 if (ieee80211_radiotap_active_vap(vap)) { 1615 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1616 1617 tap->wt_flags = 0; 1618 1619 ieee80211_radiotap_tx(vap, m0); 1620 } 1621 1622 shdr = SLIST_FIRST(&sc->free_shdr); 1623 sbuf = SLIST_FIRST(&sc->free_sbuf); 1624 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1625 1626 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1627 shdr->hdr.subtype = 0; 1628 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0; 1629 shdr->hdr.encrypt = 0; 1630 shdr->hdr.keyidx = 0; 1631 shdr->hdr.keysz = 0; 1632 shdr->hdr.fragmentsz = 0; 1633 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1634 if (ic->ic_opmode == IEEE80211_M_STA) 1635 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1636 else 1637 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1638 1639 /* trim IEEE802.11 header */ 1640 m_adj(m0, sizeof (struct ieee80211_frame)); 1641 1642 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1643 &nsegs, 0); 1644 if (error != 0 && error != EFBIG) { 1645 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1646 error); 1647 m_freem(m0); 1648 return error; 1649 } 1650 if (error != 0) { 1651 mnew = m_defrag(m0, M_NOWAIT); 1652 if (mnew == NULL) { 1653 device_printf(sc->sc_dev, 1654 "could not defragment mbuf\n"); 1655 m_freem(m0); 1656 return ENOBUFS; 1657 } 1658 m0 = mnew; 1659 1660 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1661 segs, &nsegs, 0); 1662 if (error != 0) { 1663 device_printf(sc->sc_dev, 1664 "could not map mbuf (error %d)\n", error); 1665 m_freem(m0); 1666 return error; 1667 } 1668 } 1669 1670 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1671 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1672 if (error != 0) { 1673 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1674 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1675 m_freem(m0); 1676 return error; 1677 } 1678 1679 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1680 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1681 1682 sbd = &sc->stbd_list[sc->txcur]; 1683 sbd->type = IPW_SBD_TYPE_HEADER; 1684 sbd->priv = shdr; 1685 sbd->bd->physaddr = htole32(physaddr); 1686 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1687 sbd->bd->nfrag = 1 + nsegs; 1688 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1689 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1690 1691 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1692 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1693 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1694 ":")); 1695 1696 sc->txfree--; 1697 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1698 1699 sbuf->m = m0; 1700 sbuf->ni = ni; 1701 1702 for (i = 0; i < nsegs; i++) { 1703 sbd = &sc->stbd_list[sc->txcur]; 1704 1705 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1706 sbd->bd->len = htole32(segs[i].ds_len); 1707 sbd->bd->nfrag = 0; 1708 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1709 if (i == nsegs - 1) { 1710 sbd->type = IPW_SBD_TYPE_DATA; 1711 sbd->priv = sbuf; 1712 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1713 } else { 1714 sbd->type = IPW_SBD_TYPE_NOASSOC; 1715 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1716 } 1717 1718 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1719 1720 sc->txfree--; 1721 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1722 } 1723 1724 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1725 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1726 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1727 1728 /* kick firmware */ 1729 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1730 1731 return 0; 1732} 1733 1734static int 1735ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1736 const struct ieee80211_bpf_params *params) 1737{ 1738 /* no support; just discard */ 1739 m_freem(m); 1740 ieee80211_free_node(ni); 1741 return 0; 1742} 1743 1744static void 1745ipw_start(struct ifnet *ifp) 1746{ 1747 struct ipw_softc *sc = ifp->if_softc; 1748 1749 IPW_LOCK(sc); 1750 ipw_start_locked(ifp); 1751 IPW_UNLOCK(sc); 1752} 1753 1754static void 1755ipw_start_locked(struct ifnet *ifp) 1756{ 1757 struct ipw_softc *sc = ifp->if_softc; 1758 struct ieee80211_node *ni; 1759 struct mbuf *m; 1760 1761 IPW_LOCK_ASSERT(sc); 1762 1763 for (;;) { 1764 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1765 if (m == NULL) 1766 break; 1767 if (sc->txfree < 1 + IPW_MAX_NSEG) { 1768 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1769 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1770 break; 1771 } 1772 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1773 if (ipw_tx_start(ifp, m, ni) != 0) { 1774 ieee80211_free_node(ni); 1775 ifp->if_oerrors++; 1776 break; 1777 } 1778 /* start watchdog timer */ 1779 sc->sc_tx_timer = 5; 1780 } 1781} 1782 1783static void 1784ipw_watchdog(void *arg) 1785{ 1786 struct ipw_softc *sc = arg; 1787 struct ifnet *ifp = sc->sc_ifp; 1788 struct ieee80211com *ic = ifp->if_l2com; 1789 1790 IPW_LOCK_ASSERT(sc); 1791 1792 if (sc->sc_tx_timer > 0) { 1793 if (--sc->sc_tx_timer == 0) { 1794 if_printf(ifp, "device timeout\n"); 1795 ifp->if_oerrors++; 1796 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1797 } 1798 } 1799 if (sc->sc_scan_timer > 0) { 1800 if (--sc->sc_scan_timer == 0) { 1801 DPRINTFN(3, ("Scan timeout\n")); 1802 /* End the scan */ 1803 if (sc->flags & IPW_FLAG_SCANNING) { 1804 IPW_UNLOCK(sc); 1805 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1806 IPW_LOCK(sc); 1807 sc->flags &= ~IPW_FLAG_SCANNING; 1808 } 1809 } 1810 } 1811 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1812 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1813} 1814 1815static int 1816ipw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1817{ 1818 struct ipw_softc *sc = ifp->if_softc; 1819 struct ieee80211com *ic = ifp->if_l2com; 1820 struct ifreq *ifr = (struct ifreq *) data; 1821 int error = 0, startall = 0; 1822 1823 switch (cmd) { 1824 case SIOCSIFFLAGS: 1825 IPW_LOCK(sc); 1826 if (ifp->if_flags & IFF_UP) { 1827 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1828 ipw_init_locked(sc); 1829 startall = 1; 1830 } 1831 } else { 1832 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1833 ipw_stop_locked(sc); 1834 } 1835 IPW_UNLOCK(sc); 1836 if (startall) 1837 ieee80211_start_all(ic); 1838 break; 1839 case SIOCGIFMEDIA: 1840 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1841 break; 1842 case SIOCGIFADDR: 1843 error = ether_ioctl(ifp, cmd, data); 1844 break; 1845 default: 1846 error = EINVAL; 1847 break; 1848 } 1849 return error; 1850} 1851 1852static void 1853ipw_stop_master(struct ipw_softc *sc) 1854{ 1855 uint32_t tmp; 1856 int ntries; 1857 1858 /* disable interrupts */ 1859 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1860 1861 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1862 for (ntries = 0; ntries < 50; ntries++) { 1863 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1864 break; 1865 DELAY(10); 1866 } 1867 if (ntries == 50) 1868 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1869 1870 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1871 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1872 1873 /* Clear all flags except the following */ 1874 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1875} 1876 1877static int 1878ipw_reset(struct ipw_softc *sc) 1879{ 1880 uint32_t tmp; 1881 int ntries; 1882 1883 ipw_stop_master(sc); 1884 1885 /* move adapter to D0 state */ 1886 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1887 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1888 1889 /* wait for clock stabilization */ 1890 for (ntries = 0; ntries < 1000; ntries++) { 1891 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1892 break; 1893 DELAY(200); 1894 } 1895 if (ntries == 1000) 1896 return EIO; 1897 1898 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1899 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1900 1901 DELAY(10); 1902 1903 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1904 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1905 1906 return 0; 1907} 1908 1909static int 1910ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1911{ 1912 int ms = hz < 1000 ? 1 : hz/10; 1913 int i, error; 1914 1915 for (i = 0; i < 100; i++) { 1916 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1917 return 0; 1918 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1919 if (error == 0 || error != EWOULDBLOCK) 1920 return 0; 1921 } 1922 DPRINTF(("%s: timeout waiting for %s\n", 1923 __func__, waitfor ? "disable" : "enable")); 1924 return ETIMEDOUT; 1925} 1926 1927static int 1928ipw_enable(struct ipw_softc *sc) 1929{ 1930 int error; 1931 1932 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1933 DPRINTF(("Enable adapter\n")); 1934 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1935 if (error != 0) 1936 return error; 1937 error = ipw_waitfordisable(sc, 0); 1938 if (error != 0) 1939 return error; 1940 sc->flags |= IPW_FLAG_ENABLED; 1941 } 1942 return 0; 1943} 1944 1945static int 1946ipw_disable(struct ipw_softc *sc) 1947{ 1948 int error; 1949 1950 if (sc->flags & IPW_FLAG_ENABLED) { 1951 DPRINTF(("Disable adapter\n")); 1952 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1953 if (error != 0) 1954 return error; 1955 error = ipw_waitfordisable(sc, 1); 1956 if (error != 0) 1957 return error; 1958 sc->flags &= ~IPW_FLAG_ENABLED; 1959 } 1960 return 0; 1961} 1962 1963/* 1964 * Upload the microcode to the device. 1965 */ 1966static int 1967ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1968{ 1969 int ntries; 1970 1971 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1972 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1973 1974 MEM_WRITE_2(sc, 0x220000, 0x0703); 1975 MEM_WRITE_2(sc, 0x220000, 0x0707); 1976 1977 MEM_WRITE_1(sc, 0x210014, 0x72); 1978 MEM_WRITE_1(sc, 0x210014, 0x72); 1979 1980 MEM_WRITE_1(sc, 0x210000, 0x40); 1981 MEM_WRITE_1(sc, 0x210000, 0x00); 1982 MEM_WRITE_1(sc, 0x210000, 0x40); 1983 1984 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1985 1986 MEM_WRITE_1(sc, 0x210000, 0x00); 1987 MEM_WRITE_1(sc, 0x210000, 0x00); 1988 MEM_WRITE_1(sc, 0x210000, 0x80); 1989 1990 MEM_WRITE_2(sc, 0x220000, 0x0703); 1991 MEM_WRITE_2(sc, 0x220000, 0x0707); 1992 1993 MEM_WRITE_1(sc, 0x210014, 0x72); 1994 MEM_WRITE_1(sc, 0x210014, 0x72); 1995 1996 MEM_WRITE_1(sc, 0x210000, 0x00); 1997 MEM_WRITE_1(sc, 0x210000, 0x80); 1998 1999 for (ntries = 0; ntries < 10; ntries++) { 2000 if (MEM_READ_1(sc, 0x210000) & 1) 2001 break; 2002 DELAY(10); 2003 } 2004 if (ntries == 10) { 2005 device_printf(sc->sc_dev, 2006 "timeout waiting for ucode to initialize\n"); 2007 return EIO; 2008 } 2009 2010 MEM_WRITE_4(sc, 0x3000e0, 0); 2011 2012 return 0; 2013} 2014 2015/* set of macros to handle unaligned little endian data in firmware image */ 2016#define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2017#define GETLE16(p) ((p)[0] | (p)[1] << 8) 2018static int 2019ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 2020{ 2021 const uint8_t *p, *end; 2022 uint32_t tmp, dst; 2023 uint16_t len; 2024 int error; 2025 2026 p = fw; 2027 end = fw + size; 2028 while (p < end) { 2029 dst = GETLE32(p); p += 4; 2030 len = GETLE16(p); p += 2; 2031 2032 ipw_write_mem_1(sc, dst, p, len); 2033 p += len; 2034 } 2035 2036 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 2037 IPW_IO_LED_OFF); 2038 2039 /* enable interrupts */ 2040 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 2041 2042 /* kick the firmware */ 2043 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 2044 2045 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 2046 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 2047 2048 /* wait at most one second for firmware initialization to complete */ 2049 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 2050 device_printf(sc->sc_dev, "timeout waiting for firmware " 2051 "initialization to complete\n"); 2052 return error; 2053 } 2054 2055 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2056 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2057 IPW_IO_GPIO3_MASK); 2058 2059 return 0; 2060} 2061 2062static int 2063ipw_setwepkeys(struct ipw_softc *sc) 2064{ 2065 struct ifnet *ifp = sc->sc_ifp; 2066 struct ieee80211com *ic = ifp->if_l2com; 2067 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2068 struct ipw_wep_key wepkey; 2069 struct ieee80211_key *wk; 2070 int error, i; 2071 2072 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2073 wk = &vap->iv_nw_keys[i]; 2074 2075 if (wk->wk_cipher == NULL || 2076 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2077 continue; 2078 2079 wepkey.idx = i; 2080 wepkey.len = wk->wk_keylen; 2081 memset(wepkey.key, 0, sizeof wepkey.key); 2082 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2083 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2084 wepkey.len)); 2085 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2086 sizeof wepkey); 2087 if (error != 0) 2088 return error; 2089 } 2090 return 0; 2091} 2092 2093static int 2094ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2095{ 2096 struct ipw_wpa_ie wpaie; 2097 2098 memset(&wpaie, 0, sizeof(wpaie)); 2099 wpaie.len = htole32(ielen); 2100 /* XXX verify length */ 2101 memcpy(&wpaie.ie, ie, ielen); 2102 DPRINTF(("Setting WPA IE\n")); 2103 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2104} 2105 2106static int 2107ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2108{ 2109 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2110 2111 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2112 DPRINTF(("Setting mandatory BSSID to null\n")); 2113 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2114 } else { 2115 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2116 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2117 bssid, IEEE80211_ADDR_LEN); 2118 } 2119} 2120 2121static int 2122ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2123{ 2124 if (ssidlen == 0) { 2125 /* 2126 * A bug in the firmware breaks the ``don't associate'' 2127 * bit in the scan options command. To compensate for 2128 * this install a bogus ssid when no ssid is specified 2129 * so the firmware won't try to associate. 2130 */ 2131 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2132 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2133 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2134 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2135 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2136 "\x3c\x3d", IEEE80211_NWID_LEN); 2137 } else { 2138#ifdef IPW_DEBUG 2139 if (ipw_debug > 0) { 2140 printf("Setting ESSID to "); 2141 ieee80211_print_essid(ssid, ssidlen); 2142 printf("\n"); 2143 } 2144#endif 2145 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2146 } 2147} 2148 2149static int 2150ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2151{ 2152 struct ipw_scan_options opts; 2153 2154 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2155 opts.channels = htole32(chanmask); 2156 opts.flags = htole32(flags); 2157 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2158} 2159 2160static int 2161ipw_scan(struct ipw_softc *sc) 2162{ 2163 uint32_t params; 2164 int error; 2165 2166 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2167 2168 if (sc->flags & IPW_FLAG_SCANNING) 2169 return (EBUSY); 2170 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2171 2172 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2173 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2174 if (error != 0) 2175 goto done; 2176 2177 /* 2178 * Setup null/bogus ssid so firmware doesn't use any previous 2179 * ssid to try and associate. This is because the ``don't 2180 * associate'' option bit is broken (sigh). 2181 */ 2182 error = ipw_setssid(sc, NULL, 0); 2183 if (error != 0) 2184 goto done; 2185 2186 /* 2187 * NB: the adapter may be disabled on association lost; 2188 * if so just re-enable it to kick off scanning. 2189 */ 2190 DPRINTF(("Starting scan\n")); 2191 sc->sc_scan_timer = 3; 2192 if (sc->flags & IPW_FLAG_ENABLED) { 2193 params = 0; /* XXX? */ 2194 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2195 ¶ms, sizeof(params)); 2196 } else 2197 error = ipw_enable(sc); 2198done: 2199 if (error != 0) { 2200 DPRINTF(("Scan failed\n")); 2201 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2202 } 2203 return (error); 2204} 2205 2206static int 2207ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2208{ 2209 struct ifnet *ifp = sc->sc_ifp; 2210 struct ieee80211com *ic = ifp->if_l2com; 2211 uint32_t data; 2212 int error; 2213 2214 data = htole32(ieee80211_chan2ieee(ic, chan)); 2215 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2216 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2217 if (error == 0) 2218 ipw_setcurchan(sc, chan); 2219 return error; 2220} 2221 2222static void 2223ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2224{ 2225 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2226 struct ipw_softc *sc = ifp->if_softc; 2227 struct ieee80211_node *ni = vap->iv_bss; 2228 struct ipw_security security; 2229 uint32_t data; 2230 int error; 2231 2232 IPW_LOCK(sc); 2233 error = ipw_disable(sc); 2234 if (error != 0) 2235 goto done; 2236 2237 memset(&security, 0, sizeof security); 2238 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2239 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2240 security.ciphers = htole32(IPW_CIPHER_NONE); 2241 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2242 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2243 sizeof security); 2244 if (error != 0) 2245 goto done; 2246 2247 data = htole32(vap->iv_rtsthreshold); 2248 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2249 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2250 if (error != 0) 2251 goto done; 2252 2253 data = htole32(vap->iv_fragthreshold); 2254 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2255 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2256 if (error != 0) 2257 goto done; 2258 2259 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2260 error = ipw_setwepkeys(sc); 2261 if (error != 0) 2262 goto done; 2263 2264 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2265 data = htole32(vap->iv_def_txkey); 2266 DPRINTF(("Setting wep tx key index to %u\n", 2267 le32toh(data))); 2268 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2269 sizeof data); 2270 if (error != 0) 2271 goto done; 2272 } 2273 } 2274 2275 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2276 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2277 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2278 if (error != 0) 2279 goto done; 2280 2281 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2282 if (error != 0) 2283 goto done; 2284 2285 error = ipw_setbssid(sc, ni->ni_bssid); 2286 if (error != 0) 2287 goto done; 2288 2289 if (vap->iv_appie_wpa != NULL) { 2290 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2291 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2292 if (error != 0) 2293 goto done; 2294 } 2295 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2296 error = ipw_setchannel(sc, ni->ni_chan); 2297 if (error != 0) 2298 goto done; 2299 } 2300 2301 /* lock scan to ap's channel and enable associate */ 2302 error = ipw_setscanopts(sc, 2303 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2304 if (error != 0) 2305 goto done; 2306 2307 error = ipw_enable(sc); /* finally, enable adapter */ 2308 if (error == 0) 2309 sc->flags |= IPW_FLAG_ASSOCIATING; 2310done: 2311 IPW_UNLOCK(sc); 2312} 2313 2314static void 2315ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2316{ 2317 struct ifnet *ifp = vap->iv_ic->ic_ifp; 2318 struct ieee80211_node *ni = vap->iv_bss; 2319 struct ipw_softc *sc = ifp->if_softc; 2320 2321 IPW_LOCK(sc); 2322 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2323 /* 2324 * NB: don't try to do this if ipw_stop_master has 2325 * shutdown the firmware and disabled interrupts. 2326 */ 2327 if (sc->flags & IPW_FLAG_FW_INITED) { 2328 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2329 /* 2330 * NB: firmware currently ignores bssid parameter, but 2331 * supply it in case this changes (follow linux driver). 2332 */ 2333 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2334 ni->ni_bssid, IEEE80211_ADDR_LEN); 2335 } 2336 IPW_UNLOCK(sc); 2337} 2338 2339/* 2340 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2341 * It is called on firmware panics or on watchdog timeouts. 2342 */ 2343static void 2344ipw_init_task(void *context, int pending) 2345{ 2346 ipw_init(context); 2347} 2348 2349static void 2350ipw_init(void *priv) 2351{ 2352 struct ipw_softc *sc = priv; 2353 struct ifnet *ifp = sc->sc_ifp; 2354 struct ieee80211com *ic = ifp->if_l2com; 2355 2356 IPW_LOCK(sc); 2357 ipw_init_locked(sc); 2358 IPW_UNLOCK(sc); 2359 2360 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2361 ieee80211_start_all(ic); /* start all vap's */ 2362} 2363 2364static void 2365ipw_init_locked(struct ipw_softc *sc) 2366{ 2367 struct ifnet *ifp = sc->sc_ifp; 2368 struct ieee80211com *ic = ifp->if_l2com; 2369 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2370 const struct firmware *fp; 2371 const struct ipw_firmware_hdr *hdr; 2372 const char *fw; 2373 2374 IPW_LOCK_ASSERT(sc); 2375 2376 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2377 ieee80211_state_name[vap->iv_state], sc->flags)); 2378 2379 /* 2380 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2381 * when loading the firmware and we don't want to be called during this 2382 * operation. 2383 */ 2384 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2385 return; 2386 sc->flags |= IPW_FLAG_INIT_LOCKED; 2387 2388 ipw_stop_locked(sc); 2389 2390 if (ipw_reset(sc) != 0) { 2391 device_printf(sc->sc_dev, "could not reset adapter\n"); 2392 goto fail; 2393 } 2394 2395 if (sc->sc_firmware == NULL) { 2396 device_printf(sc->sc_dev, "no firmware\n"); 2397 goto fail; 2398 } 2399 /* NB: consistency already checked on load */ 2400 fp = sc->sc_firmware; 2401 hdr = (const struct ipw_firmware_hdr *)fp->data; 2402 2403 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2404 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2405 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2406 device_printf(sc->sc_dev, "could not load microcode\n"); 2407 goto fail; 2408 } 2409 2410 ipw_stop_master(sc); 2411 2412 /* 2413 * Setup tx, rx and status rings. 2414 */ 2415 sc->txold = IPW_NTBD - 1; 2416 sc->txcur = 0; 2417 sc->txfree = IPW_NTBD - 2; 2418 sc->rxcur = IPW_NRBD - 1; 2419 2420 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2421 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2422 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2423 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2424 2425 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2426 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2427 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2428 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2429 2430 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2431 2432 fw = (const char *)fp->data + sizeof *hdr; 2433 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2434 device_printf(sc->sc_dev, "could not load firmware\n"); 2435 goto fail; 2436 } 2437 2438 sc->flags |= IPW_FLAG_FW_INITED; 2439 2440 /* retrieve information tables base addresses */ 2441 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2442 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2443 2444 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2445 2446 if (ipw_config(sc) != 0) { 2447 device_printf(sc->sc_dev, "device configuration failed\n"); 2448 goto fail; 2449 } 2450 2451 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2452 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2453 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2454 2455 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2456 return; 2457 2458fail: 2459 ipw_stop_locked(sc); 2460 sc->flags &=~ IPW_FLAG_INIT_LOCKED; 2461} 2462 2463static int 2464ipw_config(struct ipw_softc *sc) 2465{ 2466 struct ifnet *ifp = sc->sc_ifp; 2467 struct ieee80211com *ic = ifp->if_l2com; 2468 struct ipw_configuration config; 2469 uint32_t data; 2470 int error; 2471 2472 error = ipw_disable(sc); 2473 if (error != 0) 2474 return error; 2475 2476 switch (ic->ic_opmode) { 2477 case IEEE80211_M_STA: 2478 case IEEE80211_M_HOSTAP: 2479 case IEEE80211_M_WDS: /* XXX */ 2480 data = htole32(IPW_MODE_BSS); 2481 break; 2482 case IEEE80211_M_IBSS: 2483 case IEEE80211_M_AHDEMO: 2484 data = htole32(IPW_MODE_IBSS); 2485 break; 2486 case IEEE80211_M_MONITOR: 2487 data = htole32(IPW_MODE_MONITOR); 2488 break; 2489 default: 2490 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2491 return EINVAL; 2492 } 2493 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2494 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2495 if (error != 0) 2496 return error; 2497 2498 if (ic->ic_opmode == IEEE80211_M_IBSS || 2499 ic->ic_opmode == IEEE80211_M_MONITOR) { 2500 error = ipw_setchannel(sc, ic->ic_curchan); 2501 if (error != 0) 2502 return error; 2503 } 2504 2505 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2506 return ipw_enable(sc); 2507 2508 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2509 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2510 if (ic->ic_opmode == IEEE80211_M_IBSS) 2511 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2512 if (ifp->if_flags & IFF_PROMISC) 2513 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2514 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2515 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2516 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2517 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2518 if (error != 0) 2519 return error; 2520 2521 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2522 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2523 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2524 if (error != 0) 2525 return error; 2526 2527 /* Use the same rate set */ 2528 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2529 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2530 if (error != 0) 2531 return error; 2532 2533 /* Use the same rate set */ 2534 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2535 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2536 if (error != 0) 2537 return error; 2538 2539 data = htole32(IPW_POWER_MODE_CAM); 2540 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2541 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2542 if (error != 0) 2543 return error; 2544 2545 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2546 data = htole32(32); /* default value */ 2547 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2548 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2549 sizeof data); 2550 if (error != 0) 2551 return error; 2552 } 2553 2554 return 0; 2555} 2556 2557static void 2558ipw_stop(void *priv) 2559{ 2560 struct ipw_softc *sc = priv; 2561 2562 IPW_LOCK(sc); 2563 ipw_stop_locked(sc); 2564 IPW_UNLOCK(sc); 2565} 2566 2567static void 2568ipw_stop_locked(struct ipw_softc *sc) 2569{ 2570 struct ifnet *ifp = sc->sc_ifp; 2571 int i; 2572 2573 IPW_LOCK_ASSERT(sc); 2574 2575 callout_stop(&sc->sc_wdtimer); 2576 ipw_stop_master(sc); 2577 2578 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2579 2580 /* 2581 * Release tx buffers. 2582 */ 2583 for (i = 0; i < IPW_NTBD; i++) 2584 ipw_release_sbd(sc, &sc->stbd_list[i]); 2585 2586 sc->sc_tx_timer = 0; 2587 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2588} 2589 2590static int 2591ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2592{ 2593 struct ipw_softc *sc = arg1; 2594 uint32_t i, size, buf[256]; 2595 2596 memset(buf, 0, sizeof buf); 2597 2598 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2599 return SYSCTL_OUT(req, buf, sizeof buf); 2600 2601 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2602 2603 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2604 for (i = 1; i < size; i++) 2605 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2606 2607 return SYSCTL_OUT(req, buf, size); 2608} 2609 2610static int 2611ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2612{ 2613 struct ipw_softc *sc = arg1; 2614 int val; 2615 2616 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2617 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2618 2619 return SYSCTL_OUT(req, &val, sizeof val); 2620} 2621 2622static uint32_t 2623ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2624{ 2625 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2626} 2627 2628static void 2629ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2630{ 2631 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2632} 2633 2634#if 0 2635static int 2636ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2637{ 2638 uint32_t addr, info; 2639 uint16_t count, size; 2640 uint32_t total; 2641 2642 /* addr[4] + count[2] + size[2] */ 2643 addr = MEM_READ_4(sc, sc->table2_base + off); 2644 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2645 2646 count = info >> 16; 2647 size = info & 0xffff; 2648 total = count * size; 2649 2650 if (total > *len) { 2651 *len = total; 2652 return EINVAL; 2653 } 2654 2655 *len = total; 2656 ipw_read_mem_1(sc, addr, buf, total); 2657 2658 return 0; 2659} 2660 2661static void 2662ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2663 bus_size_t count) 2664{ 2665 for (; count > 0; offset++, datap++, count--) { 2666 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2667 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2668 } 2669} 2670#endif 2671 2672static void 2673ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2674 bus_size_t count) 2675{ 2676 for (; count > 0; offset++, datap++, count--) { 2677 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2678 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2679 } 2680} 2681 2682static void 2683ipw_scan_start(struct ieee80211com *ic) 2684{ 2685 struct ifnet *ifp = ic->ic_ifp; 2686 struct ipw_softc *sc = ifp->if_softc; 2687 2688 IPW_LOCK(sc); 2689 ipw_scan(sc); 2690 IPW_UNLOCK(sc); 2691} 2692 2693static void 2694ipw_set_channel(struct ieee80211com *ic) 2695{ 2696 struct ifnet *ifp = ic->ic_ifp; 2697 struct ipw_softc *sc = ifp->if_softc; 2698 2699 IPW_LOCK(sc); 2700 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2701 ipw_disable(sc); 2702 ipw_setchannel(sc, ic->ic_curchan); 2703 ipw_enable(sc); 2704 } 2705 IPW_UNLOCK(sc); 2706} 2707 2708static void 2709ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2710{ 2711 /* NB: all channels are scanned at once */ 2712} 2713 2714static void 2715ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2716{ 2717 /* NB: don't try to abort scan; wait for firmware to finish */ 2718} 2719 2720static void 2721ipw_scan_end(struct ieee80211com *ic) 2722{ 2723 struct ifnet *ifp = ic->ic_ifp; 2724 struct ipw_softc *sc = ifp->if_softc; 2725 2726 IPW_LOCK(sc); 2727 sc->flags &= ~IPW_FLAG_SCANNING; 2728 IPW_UNLOCK(sc); 2729} 2730