1/*- 2 * Copyright (c) 2004-2006 3 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 4 * Copyright (c) 2006 Sam Leffler, Errno Consulting 5 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: stable/11/sys/dev/ipw/if_ipw.c 343907 2019-02-08 13:57:28Z avos $"); 32 33/*- 34 * Intel(R) PRO/Wireless 2100 MiniPCI driver 35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 36 */ 37 38#include <sys/param.h> 39#include <sys/sysctl.h> 40#include <sys/sockio.h> 41#include <sys/mbuf.h> 42#include <sys/kernel.h> 43#include <sys/socket.h> 44#include <sys/systm.h> 45#include <sys/malloc.h> 46#include <sys/queue.h> 47#include <sys/taskqueue.h> 48#include <sys/module.h> 49#include <sys/bus.h> 50#include <sys/endian.h> 51#include <sys/linker.h> 52#include <sys/firmware.h> 53 54#include <machine/bus.h> 55#include <machine/resource.h> 56#include <sys/rman.h> 57 58#include <dev/pci/pcireg.h> 59#include <dev/pci/pcivar.h> 60 61#include <net/bpf.h> 62#include <net/if.h> 63#include <net/if_var.h> 64#include <net/if_arp.h> 65#include <net/ethernet.h> 66#include <net/if_dl.h> 67#include <net/if_media.h> 68#include <net/if_types.h> 69 70#include <net80211/ieee80211_var.h> 71#include <net80211/ieee80211_radiotap.h> 72 73#include <netinet/in.h> 74#include <netinet/in_systm.h> 75#include <netinet/in_var.h> 76#include <netinet/ip.h> 77#include <netinet/if_ether.h> 78 79#include <dev/ipw/if_ipwreg.h> 80#include <dev/ipw/if_ipwvar.h> 81 82#define IPW_DEBUG 83#ifdef IPW_DEBUG 84#define DPRINTF(x) do { if (ipw_debug > 0) printf x; } while (0) 85#define DPRINTFN(n, x) do { if (ipw_debug >= (n)) printf x; } while (0) 86int ipw_debug = 0; 87SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level"); 88#else 89#define DPRINTF(x) 90#define DPRINTFN(n, x) 91#endif 92 93MODULE_DEPEND(ipw, pci, 1, 1, 1); 94MODULE_DEPEND(ipw, wlan, 1, 1, 1); 95MODULE_DEPEND(ipw, firmware, 1, 1, 1); 96 97struct ipw_ident { 98 uint16_t vendor; 99 uint16_t device; 100 const char *name; 101}; 102 103static const struct ipw_ident ipw_ident_table[] = { 104 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" }, 105 106 { 0, 0, NULL } 107}; 108 109static struct ieee80211vap *ipw_vap_create(struct ieee80211com *, 110 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 111 const uint8_t [IEEE80211_ADDR_LEN], 112 const uint8_t [IEEE80211_ADDR_LEN]); 113static void ipw_vap_delete(struct ieee80211vap *); 114static int ipw_dma_alloc(struct ipw_softc *); 115static void ipw_release(struct ipw_softc *); 116static void ipw_media_status(struct ifnet *, struct ifmediareq *); 117static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int); 118static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t); 119static uint16_t ipw_read_chanmask(struct ipw_softc *); 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 ipw_softc *, struct mbuf *, 132 struct ieee80211_node *); 133static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *, 134 const struct ieee80211_bpf_params *); 135static int ipw_transmit(struct ieee80211com *, struct mbuf *); 136static void ipw_start(struct ipw_softc *); 137static void ipw_watchdog(void *); 138static void ipw_parent(struct ieee80211com *); 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_getradiocaps(struct ieee80211com *, int, int *, 169 struct ieee80211_channel[]); 170static void ipw_set_channel(struct ieee80211com *); 171static void ipw_scan_curchan(struct ieee80211_scan_state *, 172 unsigned long maxdwell); 173static void ipw_scan_mindwell(struct ieee80211_scan_state *); 174 175static int ipw_probe(device_t); 176static int ipw_attach(device_t); 177static int ipw_detach(device_t); 178static int ipw_shutdown(device_t); 179static int ipw_suspend(device_t); 180static int ipw_resume(device_t); 181 182static device_method_t ipw_methods[] = { 183 /* Device interface */ 184 DEVMETHOD(device_probe, ipw_probe), 185 DEVMETHOD(device_attach, ipw_attach), 186 DEVMETHOD(device_detach, ipw_detach), 187 DEVMETHOD(device_shutdown, ipw_shutdown), 188 DEVMETHOD(device_suspend, ipw_suspend), 189 DEVMETHOD(device_resume, ipw_resume), 190 191 DEVMETHOD_END 192}; 193 194static driver_t ipw_driver = { 195 "ipw", 196 ipw_methods, 197 sizeof (struct ipw_softc) 198}; 199 200static devclass_t ipw_devclass; 201 202DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL); 203 204MODULE_VERSION(ipw, 1); 205 206static int 207ipw_probe(device_t dev) 208{ 209 const struct ipw_ident *ident; 210 211 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 212 if (pci_get_vendor(dev) == ident->vendor && 213 pci_get_device(dev) == ident->device) { 214 device_set_desc(dev, ident->name); 215 return (BUS_PROBE_DEFAULT); 216 } 217 } 218 return ENXIO; 219} 220 221/* Base Address Register */ 222static int 223ipw_attach(device_t dev) 224{ 225 struct ipw_softc *sc = device_get_softc(dev); 226 struct ieee80211com *ic = &sc->sc_ic; 227 uint16_t val; 228 int error, i; 229 230 sc->sc_dev = dev; 231 232 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 233 MTX_DEF | MTX_RECURSE); 234 mbufq_init(&sc->sc_snd, ifqmaxlen); 235 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 236 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 237 238 pci_write_config(dev, 0x41, 0, 1); 239 240 /* enable bus-mastering */ 241 pci_enable_busmaster(dev); 242 243 i = PCIR_BAR(0); 244 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE); 245 if (sc->mem == NULL) { 246 device_printf(dev, "could not allocate memory resource\n"); 247 goto fail; 248 } 249 250 sc->sc_st = rman_get_bustag(sc->mem); 251 sc->sc_sh = rman_get_bushandle(sc->mem); 252 253 i = 0; 254 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i, 255 RF_ACTIVE | RF_SHAREABLE); 256 if (sc->irq == NULL) { 257 device_printf(dev, "could not allocate interrupt resource\n"); 258 goto fail1; 259 } 260 261 if (ipw_reset(sc) != 0) { 262 device_printf(dev, "could not reset adapter\n"); 263 goto fail2; 264 } 265 266 if (ipw_dma_alloc(sc) != 0) { 267 device_printf(dev, "could not allocate DMA resources\n"); 268 goto fail2; 269 } 270 271 ic->ic_softc = sc; 272 ic->ic_name = device_get_nameunit(dev); 273 ic->ic_opmode = IEEE80211_M_STA; 274 ic->ic_phytype = IEEE80211_T_DS; 275 276 /* set device capabilities */ 277 ic->ic_caps = 278 IEEE80211_C_STA /* station mode supported */ 279 | IEEE80211_C_IBSS /* IBSS mode supported */ 280 | IEEE80211_C_MONITOR /* monitor mode supported */ 281 | IEEE80211_C_PMGT /* power save supported */ 282 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 283 | IEEE80211_C_WPA /* 802.11i supported */ 284 ; 285 286 /* read MAC address from EEPROM */ 287 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 288 ic->ic_macaddr[0] = val >> 8; 289 ic->ic_macaddr[1] = val & 0xff; 290 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 291 ic->ic_macaddr[2] = val >> 8; 292 ic->ic_macaddr[3] = val & 0xff; 293 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 294 ic->ic_macaddr[4] = val >> 8; 295 ic->ic_macaddr[5] = val & 0xff; 296 297 sc->chanmask = ipw_read_chanmask(sc); 298 ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, 299 ic->ic_channels); 300 301 /* check support for radio transmitter switch in EEPROM */ 302 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 303 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 304 305 ieee80211_ifattach(ic); 306 ic->ic_scan_start = ipw_scan_start; 307 ic->ic_scan_end = ipw_scan_end; 308 ic->ic_getradiocaps = ipw_getradiocaps; 309 ic->ic_set_channel = ipw_set_channel; 310 ic->ic_scan_curchan = ipw_scan_curchan; 311 ic->ic_scan_mindwell = ipw_scan_mindwell; 312 ic->ic_raw_xmit = ipw_raw_xmit; 313 ic->ic_vap_create = ipw_vap_create; 314 ic->ic_vap_delete = ipw_vap_delete; 315 ic->ic_transmit = ipw_transmit; 316 ic->ic_parent = ipw_parent; 317 318 ieee80211_radiotap_attach(ic, 319 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 320 IPW_TX_RADIOTAP_PRESENT, 321 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 322 IPW_RX_RADIOTAP_PRESENT); 323 324 /* 325 * Add a few sysctl knobs. 326 */ 327 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 328 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 329 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 330 "radio transmitter switch state (0=off, 1=on)"); 331 332 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 333 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 334 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 335 "statistics"); 336 337 /* 338 * Hook our interrupt after all initialization is complete. 339 */ 340 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 341 NULL, ipw_intr, sc, &sc->sc_ih); 342 if (error != 0) { 343 device_printf(dev, "could not set up interrupt\n"); 344 goto fail3; 345 } 346 347 if (bootverbose) 348 ieee80211_announce(ic); 349 350 return 0; 351fail3: 352 ipw_release(sc); 353fail2: 354 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 355fail1: 356 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 357 sc->mem); 358fail: 359 mtx_destroy(&sc->sc_mtx); 360 return ENXIO; 361} 362 363static int 364ipw_detach(device_t dev) 365{ 366 struct ipw_softc *sc = device_get_softc(dev); 367 struct ieee80211com *ic = &sc->sc_ic; 368 369 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 370 371 ieee80211_draintask(ic, &sc->sc_init_task); 372 ipw_stop(sc); 373 374 ieee80211_ifdetach(ic); 375 376 callout_drain(&sc->sc_wdtimer); 377 mbufq_drain(&sc->sc_snd); 378 379 ipw_release(sc); 380 381 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 382 383 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 384 sc->mem); 385 386 if (sc->sc_firmware != NULL) { 387 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 388 sc->sc_firmware = NULL; 389 } 390 391 mtx_destroy(&sc->sc_mtx); 392 393 return 0; 394} 395 396static struct ieee80211vap * 397ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 398 enum ieee80211_opmode opmode, int flags, 399 const uint8_t bssid[IEEE80211_ADDR_LEN], 400 const uint8_t mac[IEEE80211_ADDR_LEN]) 401{ 402 struct ipw_softc *sc = ic->ic_softc; 403 struct ipw_vap *ivp; 404 struct ieee80211vap *vap; 405 const struct firmware *fp; 406 const struct ipw_firmware_hdr *hdr; 407 const char *imagename; 408 409 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 410 return NULL; 411 412 switch (opmode) { 413 case IEEE80211_M_STA: 414 imagename = "ipw_bss"; 415 break; 416 case IEEE80211_M_IBSS: 417 imagename = "ipw_ibss"; 418 break; 419 case IEEE80211_M_MONITOR: 420 imagename = "ipw_monitor"; 421 break; 422 default: 423 return NULL; 424 } 425 426 /* 427 * Load firmware image using the firmware(9) subsystem. Doing 428 * this unlocked is ok since we're single-threaded by the 429 * 802.11 layer. 430 */ 431 if (sc->sc_firmware == NULL || 432 strcmp(sc->sc_firmware->name, imagename) != 0) { 433 if (sc->sc_firmware != NULL) 434 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 435 sc->sc_firmware = firmware_get(imagename); 436 } 437 if (sc->sc_firmware == NULL) { 438 device_printf(sc->sc_dev, 439 "could not load firmware image '%s'\n", imagename); 440 return NULL; 441 } 442 fp = sc->sc_firmware; 443 if (fp->datasize < sizeof *hdr) { 444 device_printf(sc->sc_dev, 445 "firmware image too short %zu\n", fp->datasize); 446 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 447 sc->sc_firmware = NULL; 448 return NULL; 449 } 450 hdr = (const struct ipw_firmware_hdr *)fp->data; 451 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 452 le32toh(hdr->ucodesz)) { 453 device_printf(sc->sc_dev, 454 "firmware image too short %zu\n", fp->datasize); 455 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 456 sc->sc_firmware = NULL; 457 return NULL; 458 } 459 460 ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO); 461 vap = &ivp->vap; 462 463 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 464 /* override with driver methods */ 465 ivp->newstate = vap->iv_newstate; 466 vap->iv_newstate = ipw_newstate; 467 468 /* complete setup */ 469 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status, 470 mac); 471 ic->ic_opmode = opmode; 472 return vap; 473} 474 475static void 476ipw_vap_delete(struct ieee80211vap *vap) 477{ 478 struct ipw_vap *ivp = IPW_VAP(vap); 479 480 ieee80211_vap_detach(vap); 481 free(ivp, M_80211_VAP); 482} 483 484static int 485ipw_dma_alloc(struct ipw_softc *sc) 486{ 487 struct ipw_soft_bd *sbd; 488 struct ipw_soft_hdr *shdr; 489 struct ipw_soft_buf *sbuf; 490 bus_addr_t physaddr; 491 int error, i; 492 493 /* 494 * Allocate parent DMA tag for subsequent allocations. 495 */ 496 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 497 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 498 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 499 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat); 500 if (error != 0) { 501 device_printf(sc->sc_dev, "could not create parent DMA tag\n"); 502 goto fail; 503 } 504 505 /* 506 * Allocate and map tx ring. 507 */ 508 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 509 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 510 NULL, &sc->tbd_dmat); 511 if (error != 0) { 512 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 513 goto fail; 514 } 515 516 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 517 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 518 if (error != 0) { 519 device_printf(sc->sc_dev, 520 "could not allocate tx ring DMA memory\n"); 521 goto fail; 522 } 523 524 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 525 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 526 if (error != 0) { 527 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 528 goto fail; 529 } 530 531 /* 532 * Allocate and map rx ring. 533 */ 534 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 535 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 536 NULL, &sc->rbd_dmat); 537 if (error != 0) { 538 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 539 goto fail; 540 } 541 542 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 543 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 544 if (error != 0) { 545 device_printf(sc->sc_dev, 546 "could not allocate rx ring DMA memory\n"); 547 goto fail; 548 } 549 550 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 551 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 552 if (error != 0) { 553 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 554 goto fail; 555 } 556 557 /* 558 * Allocate and map status ring. 559 */ 560 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 561 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 562 NULL, NULL, &sc->status_dmat); 563 if (error != 0) { 564 device_printf(sc->sc_dev, 565 "could not create status ring DMA tag\n"); 566 goto fail; 567 } 568 569 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 570 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 571 if (error != 0) { 572 device_printf(sc->sc_dev, 573 "could not allocate status ring DMA memory\n"); 574 goto fail; 575 } 576 577 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 578 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 579 0); 580 if (error != 0) { 581 device_printf(sc->sc_dev, 582 "could not map status ring DMA memory\n"); 583 goto fail; 584 } 585 586 /* 587 * Allocate command DMA map. 588 */ 589 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 590 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 591 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 592 if (error != 0) { 593 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 594 goto fail; 595 } 596 597 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 598 if (error != 0) { 599 device_printf(sc->sc_dev, 600 "could not create command DMA map\n"); 601 goto fail; 602 } 603 604 /* 605 * Allocate headers DMA maps. 606 */ 607 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 608 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 609 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 610 if (error != 0) { 611 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 612 goto fail; 613 } 614 615 SLIST_INIT(&sc->free_shdr); 616 for (i = 0; i < IPW_NDATA; i++) { 617 shdr = &sc->shdr_list[i]; 618 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 619 if (error != 0) { 620 device_printf(sc->sc_dev, 621 "could not create header DMA map\n"); 622 goto fail; 623 } 624 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 625 } 626 627 /* 628 * Allocate tx buffers DMA maps. 629 */ 630 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 631 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 632 NULL, NULL, &sc->txbuf_dmat); 633 if (error != 0) { 634 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 635 goto fail; 636 } 637 638 SLIST_INIT(&sc->free_sbuf); 639 for (i = 0; i < IPW_NDATA; i++) { 640 sbuf = &sc->tx_sbuf_list[i]; 641 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 642 if (error != 0) { 643 device_printf(sc->sc_dev, 644 "could not create tx DMA map\n"); 645 goto fail; 646 } 647 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 648 } 649 650 /* 651 * Initialize tx ring. 652 */ 653 for (i = 0; i < IPW_NTBD; i++) { 654 sbd = &sc->stbd_list[i]; 655 sbd->bd = &sc->tbd_list[i]; 656 sbd->type = IPW_SBD_TYPE_NOASSOC; 657 } 658 659 /* 660 * Pre-allocate rx buffers and DMA maps. 661 */ 662 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 663 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 664 NULL, &sc->rxbuf_dmat); 665 if (error != 0) { 666 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 667 goto fail; 668 } 669 670 for (i = 0; i < IPW_NRBD; i++) { 671 sbd = &sc->srbd_list[i]; 672 sbuf = &sc->rx_sbuf_list[i]; 673 sbd->bd = &sc->rbd_list[i]; 674 675 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 676 if (sbuf->m == NULL) { 677 device_printf(sc->sc_dev, 678 "could not allocate rx mbuf\n"); 679 error = ENOMEM; 680 goto fail; 681 } 682 683 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 684 if (error != 0) { 685 device_printf(sc->sc_dev, 686 "could not create rx DMA map\n"); 687 goto fail; 688 } 689 690 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 691 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 692 &physaddr, 0); 693 if (error != 0) { 694 device_printf(sc->sc_dev, 695 "could not map rx DMA memory\n"); 696 goto fail; 697 } 698 699 sbd->type = IPW_SBD_TYPE_DATA; 700 sbd->priv = sbuf; 701 sbd->bd->physaddr = htole32(physaddr); 702 sbd->bd->len = htole32(MCLBYTES); 703 } 704 705 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 706 707 return 0; 708 709fail: ipw_release(sc); 710 return error; 711} 712 713static void 714ipw_release(struct ipw_softc *sc) 715{ 716 struct ipw_soft_buf *sbuf; 717 int i; 718 719 if (sc->parent_dmat != NULL) { 720 bus_dma_tag_destroy(sc->parent_dmat); 721 } 722 723 if (sc->tbd_dmat != NULL) { 724 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 725 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map); 726 bus_dma_tag_destroy(sc->tbd_dmat); 727 } 728 729 if (sc->rbd_dmat != NULL) { 730 if (sc->rbd_list != NULL) { 731 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 732 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 733 sc->rbd_map); 734 } 735 bus_dma_tag_destroy(sc->rbd_dmat); 736 } 737 738 if (sc->status_dmat != NULL) { 739 if (sc->status_list != NULL) { 740 bus_dmamap_unload(sc->status_dmat, sc->status_map); 741 bus_dmamem_free(sc->status_dmat, sc->status_list, 742 sc->status_map); 743 } 744 bus_dma_tag_destroy(sc->status_dmat); 745 } 746 747 for (i = 0; i < IPW_NTBD; i++) 748 ipw_release_sbd(sc, &sc->stbd_list[i]); 749 750 if (sc->cmd_dmat != NULL) { 751 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 752 bus_dma_tag_destroy(sc->cmd_dmat); 753 } 754 755 if (sc->hdr_dmat != NULL) { 756 for (i = 0; i < IPW_NDATA; i++) 757 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 758 bus_dma_tag_destroy(sc->hdr_dmat); 759 } 760 761 if (sc->txbuf_dmat != NULL) { 762 for (i = 0; i < IPW_NDATA; i++) { 763 bus_dmamap_destroy(sc->txbuf_dmat, 764 sc->tx_sbuf_list[i].map); 765 } 766 bus_dma_tag_destroy(sc->txbuf_dmat); 767 } 768 769 if (sc->rxbuf_dmat != NULL) { 770 for (i = 0; i < IPW_NRBD; i++) { 771 sbuf = &sc->rx_sbuf_list[i]; 772 if (sbuf->m != NULL) { 773 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 774 BUS_DMASYNC_POSTREAD); 775 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 776 m_freem(sbuf->m); 777 } 778 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 779 } 780 bus_dma_tag_destroy(sc->rxbuf_dmat); 781 } 782} 783 784static int 785ipw_shutdown(device_t dev) 786{ 787 struct ipw_softc *sc = device_get_softc(dev); 788 789 ipw_stop(sc); 790 791 return 0; 792} 793 794static int 795ipw_suspend(device_t dev) 796{ 797 struct ipw_softc *sc = device_get_softc(dev); 798 struct ieee80211com *ic = &sc->sc_ic; 799 800 ieee80211_suspend_all(ic); 801 return 0; 802} 803 804static int 805ipw_resume(device_t dev) 806{ 807 struct ipw_softc *sc = device_get_softc(dev); 808 struct ieee80211com *ic = &sc->sc_ic; 809 810 pci_write_config(dev, 0x41, 0, 1); 811 812 ieee80211_resume_all(ic); 813 return 0; 814} 815 816static int 817ipw_cvtrate(int ipwrate) 818{ 819 switch (ipwrate) { 820 case IPW_RATE_DS1: return 2; 821 case IPW_RATE_DS2: return 4; 822 case IPW_RATE_DS5: return 11; 823 case IPW_RATE_DS11: return 22; 824 } 825 return 0; 826} 827 828/* 829 * The firmware automatically adapts the transmit speed. We report its current 830 * value here. 831 */ 832static void 833ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 834{ 835 struct ieee80211vap *vap = ifp->if_softc; 836 struct ieee80211com *ic = vap->iv_ic; 837 struct ipw_softc *sc = ic->ic_softc; 838 839 /* read current transmission rate from adapter */ 840 vap->iv_bss->ni_txrate = ipw_cvtrate( 841 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 842 ieee80211_media_status(ifp, imr); 843} 844 845static int 846ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 847{ 848 struct ipw_vap *ivp = IPW_VAP(vap); 849 struct ieee80211com *ic = vap->iv_ic; 850 struct ipw_softc *sc = ic->ic_softc; 851 enum ieee80211_state ostate; 852 853 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 854 ieee80211_state_name[vap->iv_state], 855 ieee80211_state_name[nstate], sc->flags)); 856 857 ostate = vap->iv_state; 858 IEEE80211_UNLOCK(ic); 859 860 switch (nstate) { 861 case IEEE80211_S_RUN: 862 if (ic->ic_opmode == IEEE80211_M_IBSS) { 863 /* 864 * XXX when joining an ibss network we are called 865 * with a SCAN -> RUN transition on scan complete. 866 * Use that to call ipw_assoc. On completing the 867 * join we are then called again with an AUTH -> RUN 868 * transition and we want to do nothing. This is 869 * all totally bogus and needs to be redone. 870 */ 871 if (ostate == IEEE80211_S_SCAN) 872 ipw_assoc(ic, vap); 873 } 874 break; 875 876 case IEEE80211_S_INIT: 877 if (sc->flags & IPW_FLAG_ASSOCIATED) 878 ipw_disassoc(ic, vap); 879 break; 880 881 case IEEE80211_S_AUTH: 882 /* 883 * Move to ASSOC state after the ipw_assoc() call. Firmware 884 * takes care of authentication, after the call we'll receive 885 * only an assoc response which would otherwise be discared 886 * if we are still in AUTH state. 887 */ 888 nstate = IEEE80211_S_ASSOC; 889 ipw_assoc(ic, vap); 890 break; 891 892 case IEEE80211_S_ASSOC: 893 /* 894 * If we are not transitioning from AUTH then resend the 895 * association request. 896 */ 897 if (ostate != IEEE80211_S_AUTH) 898 ipw_assoc(ic, vap); 899 break; 900 901 default: 902 break; 903 } 904 IEEE80211_LOCK(ic); 905 return ivp->newstate(vap, nstate, arg); 906} 907 908/* 909 * Read 16 bits at address 'addr' from the serial EEPROM. 910 */ 911static uint16_t 912ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 913{ 914 uint32_t tmp; 915 uint16_t val; 916 int n; 917 918 /* clock C once before the first command */ 919 IPW_EEPROM_CTL(sc, 0); 920 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 921 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 922 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 923 924 /* write start bit (1) */ 925 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 926 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 927 928 /* write READ opcode (10) */ 929 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 930 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 931 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 932 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 933 934 /* write address A7-A0 */ 935 for (n = 7; n >= 0; n--) { 936 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 937 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 938 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 939 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 940 } 941 942 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 943 944 /* read data Q15-Q0 */ 945 val = 0; 946 for (n = 15; n >= 0; n--) { 947 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 948 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 949 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 950 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 951 } 952 953 IPW_EEPROM_CTL(sc, 0); 954 955 /* clear Chip Select and clock C */ 956 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 957 IPW_EEPROM_CTL(sc, 0); 958 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 959 960 return le16toh(val); 961} 962 963static uint16_t 964ipw_read_chanmask(struct ipw_softc *sc) 965{ 966 uint16_t val; 967 968 /* set supported .11b channels (read from EEPROM) */ 969 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 970 val = 0x7ff; /* default to channels 1-11 */ 971 val <<= 1; 972 973 return (val); 974} 975 976static void 977ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 978{ 979 struct ipw_cmd *cmd; 980 981 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 982 983 cmd = mtod(sbuf->m, struct ipw_cmd *); 984 985 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 986 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 987 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 988 le32toh(cmd->status))); 989 990 sc->flags &= ~IPW_FLAG_BUSY; 991 wakeup(sc); 992} 993 994static void 995ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 996{ 997#define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 998 struct ieee80211com *ic = &sc->sc_ic; 999 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1000 uint32_t state; 1001 1002 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1003 1004 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1005 1006 switch (state) { 1007 case IPW_STATE_ASSOCIATED: 1008 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1009 IEEESTATE(vap), sc->flags)); 1010 /* XXX suppress state change in case the fw auto-associates */ 1011 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1012 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1013 IEEESTATE(vap), sc->flags)); 1014 break; 1015 } 1016 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1017 sc->flags |= IPW_FLAG_ASSOCIATED; 1018 break; 1019 1020 case IPW_STATE_SCANNING: 1021 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1022 IEEESTATE(vap), sc->flags)); 1023 /* 1024 * NB: Check driver state for association on assoc 1025 * loss as the firmware will immediately start to 1026 * scan and we would treat it as a beacon miss if 1027 * we checked the 802.11 layer state. 1028 */ 1029 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1030 IPW_UNLOCK(sc); 1031 /* XXX probably need to issue disassoc to fw */ 1032 ieee80211_beacon_miss(ic); 1033 IPW_LOCK(sc); 1034 } 1035 break; 1036 1037 case IPW_STATE_SCAN_COMPLETE: 1038 /* 1039 * XXX For some reason scan requests generate scan 1040 * started + scan done events before any traffic is 1041 * received (e.g. probe response frames). We work 1042 * around this by marking the HACK flag and skipping 1043 * the first scan complete event. 1044 */ 1045 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1046 IEEESTATE(vap), sc->flags)); 1047 if (sc->flags & IPW_FLAG_HACK) { 1048 sc->flags &= ~IPW_FLAG_HACK; 1049 break; 1050 } 1051 if (sc->flags & IPW_FLAG_SCANNING) { 1052 IPW_UNLOCK(sc); 1053 ieee80211_scan_done(vap); 1054 IPW_LOCK(sc); 1055 sc->flags &= ~IPW_FLAG_SCANNING; 1056 sc->sc_scan_timer = 0; 1057 } 1058 break; 1059 1060 case IPW_STATE_ASSOCIATION_LOST: 1061 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1062 IEEESTATE(vap), sc->flags)); 1063 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1064 if (vap->iv_state == IEEE80211_S_RUN) { 1065 IPW_UNLOCK(sc); 1066 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1067 IPW_LOCK(sc); 1068 } 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 ieee80211com *ic = &sc->sc_ic; 1101 1102 ic->ic_curchan = chan; 1103 ieee80211_radiotap_chan_change(ic); 1104} 1105 1106/* 1107 * XXX: Hack to set the current channel to the value advertised in beacons or 1108 * probe responses. Only used during AP detection. 1109 */ 1110static void 1111ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1112{ 1113 struct ieee80211com *ic = &sc->sc_ic; 1114 struct ieee80211_channel *c; 1115 struct ieee80211_frame *wh; 1116 uint8_t subtype; 1117 uint8_t *frm, *efrm; 1118 1119 wh = mtod(m, struct ieee80211_frame *); 1120 1121 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1122 return; 1123 1124 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1125 1126 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1127 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1128 return; 1129 1130 /* XXX use ieee80211_parse_beacon */ 1131 frm = (uint8_t *)(wh + 1); 1132 efrm = mtod(m, uint8_t *) + m->m_len; 1133 1134 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1135 while (frm < efrm) { 1136 if (*frm == IEEE80211_ELEMID_DSPARMS) 1137#if IEEE80211_CHAN_MAX < 255 1138 if (frm[2] <= IEEE80211_CHAN_MAX) 1139#endif 1140 { 1141 DPRINTF(("Fixing channel to %d\n", frm[2])); 1142 c = ieee80211_find_channel(ic, 1143 ieee80211_ieee2mhz(frm[2], 0), 1144 IEEE80211_CHAN_B); 1145 if (c == NULL) 1146 c = &ic->ic_channels[0]; 1147 ipw_setcurchan(sc, c); 1148 } 1149 1150 frm += frm[1] + 2; 1151 } 1152} 1153 1154static void 1155ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1156 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1157{ 1158 struct ieee80211com *ic = &sc->sc_ic; 1159 struct mbuf *mnew, *m; 1160 struct ieee80211_node *ni; 1161 bus_addr_t physaddr; 1162 int error; 1163 int8_t rssi, nf; 1164 1165 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1166 status->rssi)); 1167 1168 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1169 le32toh(status->len) > MCLBYTES) 1170 return; 1171 1172 /* 1173 * Try to allocate a new mbuf for this ring element and load it before 1174 * processing the current mbuf. If the ring element cannot be loaded, 1175 * drop the received packet and reuse the old mbuf. In the unlikely 1176 * case that the old mbuf can't be reloaded either, explicitly panic. 1177 */ 1178 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1179 if (mnew == NULL) { 1180 counter_u64_add(ic->ic_ierrors, 1); 1181 return; 1182 } 1183 1184 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1185 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1186 1187 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1188 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1189 if (error != 0) { 1190 m_freem(mnew); 1191 1192 /* try to reload the old mbuf */ 1193 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1194 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1195 &physaddr, 0); 1196 if (error != 0) { 1197 /* very unlikely that it will fail... */ 1198 panic("%s: could not load old rx mbuf", 1199 device_get_name(sc->sc_dev)); 1200 } 1201 counter_u64_add(ic->ic_ierrors, 1); 1202 return; 1203 } 1204 1205 /* 1206 * New mbuf successfully loaded, update Rx ring and continue 1207 * processing. 1208 */ 1209 m = sbuf->m; 1210 sbuf->m = mnew; 1211 sbd->bd->physaddr = htole32(physaddr); 1212 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1213 1214 rssi = status->rssi + IPW_RSSI_TO_DBM; 1215 nf = -95; 1216 if (ieee80211_radiotap_active(ic)) { 1217 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1218 1219 tap->wr_flags = 0; 1220 tap->wr_antsignal = rssi; 1221 tap->wr_antnoise = nf; 1222 } 1223 1224 if (sc->flags & IPW_FLAG_SCANNING) 1225 ipw_fix_channel(sc, m); 1226 1227 IPW_UNLOCK(sc); 1228 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1229 if (ni != NULL) { 1230 (void) ieee80211_input(ni, m, rssi - nf, nf); 1231 ieee80211_free_node(ni); 1232 } else 1233 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1234 IPW_LOCK(sc); 1235 1236 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1237} 1238 1239static void 1240ipw_rx_intr(struct ipw_softc *sc) 1241{ 1242 struct ipw_status *status; 1243 struct ipw_soft_bd *sbd; 1244 struct ipw_soft_buf *sbuf; 1245 uint32_t r, i; 1246 1247 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1248 return; 1249 1250 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1251 1252 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1253 1254 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1255 status = &sc->status_list[i]; 1256 sbd = &sc->srbd_list[i]; 1257 sbuf = sbd->priv; 1258 1259 switch (le16toh(status->code) & 0xf) { 1260 case IPW_STATUS_CODE_COMMAND: 1261 ipw_rx_cmd_intr(sc, sbuf); 1262 break; 1263 1264 case IPW_STATUS_CODE_NEWSTATE: 1265 ipw_rx_newstate_intr(sc, sbuf); 1266 break; 1267 1268 case IPW_STATUS_CODE_DATA_802_3: 1269 case IPW_STATUS_CODE_DATA_802_11: 1270 ipw_rx_data_intr(sc, status, sbd, sbuf); 1271 break; 1272 1273 case IPW_STATUS_CODE_NOTIFICATION: 1274 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1275 le32toh(status->len), status->flags)); 1276 /* XXX maybe drive state machine AUTH->ASSOC? */ 1277 break; 1278 1279 default: 1280 device_printf(sc->sc_dev, "unexpected status code %u\n", 1281 le16toh(status->code)); 1282 } 1283 1284 /* firmware was killed, stop processing received frames */ 1285 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1286 return; 1287 1288 sbd->bd->flags = 0; 1289 } 1290 1291 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1292 1293 /* kick the firmware */ 1294 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1295 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1296} 1297 1298static void 1299ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1300{ 1301 struct ipw_soft_hdr *shdr; 1302 struct ipw_soft_buf *sbuf; 1303 1304 switch (sbd->type) { 1305 case IPW_SBD_TYPE_COMMAND: 1306 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1307 BUS_DMASYNC_POSTWRITE); 1308 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1309 break; 1310 1311 case IPW_SBD_TYPE_HEADER: 1312 shdr = sbd->priv; 1313 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1314 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1315 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1316 break; 1317 1318 case IPW_SBD_TYPE_DATA: 1319 sbuf = sbd->priv; 1320 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1321 BUS_DMASYNC_POSTWRITE); 1322 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1323 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1324 1325 ieee80211_tx_complete(sbuf->ni, sbuf->m, 0/*XXX*/); 1326 1327 sc->sc_tx_timer = 0; 1328 break; 1329 } 1330 1331 sbd->type = IPW_SBD_TYPE_NOASSOC; 1332} 1333 1334static void 1335ipw_tx_intr(struct ipw_softc *sc) 1336{ 1337 struct ipw_soft_bd *sbd; 1338 uint32_t r, i; 1339 1340 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1341 return; 1342 1343 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1344 1345 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1346 sbd = &sc->stbd_list[i]; 1347 ipw_release_sbd(sc, sbd); 1348 sc->txfree++; 1349 } 1350 1351 /* remember what the firmware has processed */ 1352 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1353 1354 ipw_start(sc); 1355} 1356 1357static void 1358ipw_fatal_error_intr(struct ipw_softc *sc) 1359{ 1360 struct ieee80211com *ic = &sc->sc_ic; 1361 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1362 1363 device_printf(sc->sc_dev, "firmware error\n"); 1364 if (vap != NULL) { 1365 IPW_UNLOCK(sc); 1366 ieee80211_cancel_scan(vap); 1367 IPW_LOCK(sc); 1368 } 1369 ieee80211_runtask(ic, &sc->sc_init_task); 1370} 1371 1372static void 1373ipw_intr(void *arg) 1374{ 1375 struct ipw_softc *sc = arg; 1376 uint32_t r; 1377 1378 IPW_LOCK(sc); 1379 1380 r = CSR_READ_4(sc, IPW_CSR_INTR); 1381 if (r == 0 || r == 0xffffffff) 1382 goto done; 1383 1384 /* disable interrupts */ 1385 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1386 1387 /* acknowledge all interrupts */ 1388 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1389 1390 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1391 ipw_fatal_error_intr(sc); 1392 goto done; 1393 } 1394 1395 if (r & IPW_INTR_FW_INIT_DONE) 1396 wakeup(sc); 1397 1398 if (r & IPW_INTR_RX_TRANSFER) 1399 ipw_rx_intr(sc); 1400 1401 if (r & IPW_INTR_TX_TRANSFER) 1402 ipw_tx_intr(sc); 1403 1404 /* re-enable interrupts */ 1405 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1406done: 1407 IPW_UNLOCK(sc); 1408} 1409 1410static void 1411ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1412{ 1413 if (error != 0) 1414 return; 1415 1416 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1417 1418 *(bus_addr_t *)arg = segs[0].ds_addr; 1419} 1420 1421static const char * 1422ipw_cmdname(int cmd) 1423{ 1424 static const struct { 1425 int cmd; 1426 const char *name; 1427 } cmds[] = { 1428 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1429 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1430 { IPW_CMD_DISABLE, "DISABLE" }, 1431 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1432 { IPW_CMD_ENABLE, "ENABLE" }, 1433 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1434 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1435 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1436 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1437 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1438 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1439 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1440 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1441 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1442 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1443 { IPW_CMD_SET_MODE, "SET_MODE" }, 1444 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1445 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1446 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1447 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1448 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1449 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1450 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1451 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1452 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1453 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1454 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1455 1456 }; 1457 static char buf[12]; 1458 int i; 1459 1460 for (i = 0; i < nitems(cmds); i++) 1461 if (cmds[i].cmd == cmd) 1462 return cmds[i].name; 1463 snprintf(buf, sizeof(buf), "%u", cmd); 1464 return buf; 1465} 1466 1467/* 1468 * Send a command to the firmware and wait for the acknowledgement. 1469 */ 1470static int 1471ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1472{ 1473 struct ipw_soft_bd *sbd; 1474 bus_addr_t physaddr; 1475 int error; 1476 1477 IPW_LOCK_ASSERT(sc); 1478 1479 if (sc->flags & IPW_FLAG_BUSY) { 1480 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1481 __func__, ipw_cmdname(type)); 1482 return EAGAIN; 1483 } 1484 sc->flags |= IPW_FLAG_BUSY; 1485 1486 sbd = &sc->stbd_list[sc->txcur]; 1487 1488 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1489 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1490 if (error != 0) { 1491 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1492 sc->flags &= ~IPW_FLAG_BUSY; 1493 return error; 1494 } 1495 1496 sc->cmd.type = htole32(type); 1497 sc->cmd.subtype = 0; 1498 sc->cmd.len = htole32(len); 1499 sc->cmd.seq = 0; 1500 memcpy(sc->cmd.data, data, len); 1501 1502 sbd->type = IPW_SBD_TYPE_COMMAND; 1503 sbd->bd->physaddr = htole32(physaddr); 1504 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1505 sbd->bd->nfrag = 1; 1506 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1507 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1508 1509 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1510 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1511 1512#ifdef IPW_DEBUG 1513 if (ipw_debug >= 4) { 1514 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1515 0, 0, len); 1516 /* Print the data buffer in the higher debug level */ 1517 if (ipw_debug >= 9 && len > 0) { 1518 printf(" data: 0x"); 1519 for (int i = 1; i <= len; i++) 1520 printf("%1D", (u_char *)data + len - i, ""); 1521 } 1522 printf("\n"); 1523 } 1524#endif 1525 1526 /* kick firmware */ 1527 sc->txfree--; 1528 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1529 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1530 1531 /* wait at most one second for command to complete */ 1532 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1533 if (error != 0) { 1534 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1535 __func__, ipw_cmdname(type), error); 1536 sc->flags &= ~IPW_FLAG_BUSY; 1537 return (error); 1538 } 1539 return (0); 1540} 1541 1542static int 1543ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1544{ 1545 struct ieee80211com *ic = &sc->sc_ic; 1546 struct ieee80211vap *vap = ni->ni_vap; 1547 struct ieee80211_frame *wh; 1548 struct ipw_soft_bd *sbd; 1549 struct ipw_soft_hdr *shdr; 1550 struct ipw_soft_buf *sbuf; 1551 struct ieee80211_key *k; 1552 struct mbuf *mnew; 1553 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1554 bus_addr_t physaddr; 1555 int nsegs, error, i; 1556 1557 wh = mtod(m0, struct ieee80211_frame *); 1558 1559 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1560 k = ieee80211_crypto_encap(ni, m0); 1561 if (k == NULL) { 1562 m_freem(m0); 1563 return ENOBUFS; 1564 } 1565 /* packet header may have moved, reset our local pointer */ 1566 wh = mtod(m0, struct ieee80211_frame *); 1567 } 1568 1569 if (ieee80211_radiotap_active_vap(vap)) { 1570 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1571 1572 tap->wt_flags = 0; 1573 1574 ieee80211_radiotap_tx(vap, m0); 1575 } 1576 1577 shdr = SLIST_FIRST(&sc->free_shdr); 1578 sbuf = SLIST_FIRST(&sc->free_sbuf); 1579 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1580 1581 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1582 shdr->hdr.subtype = 0; 1583 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0; 1584 shdr->hdr.encrypt = 0; 1585 shdr->hdr.keyidx = 0; 1586 shdr->hdr.keysz = 0; 1587 shdr->hdr.fragmentsz = 0; 1588 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1589 if (ic->ic_opmode == IEEE80211_M_STA) 1590 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1591 else 1592 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1593 1594 /* trim IEEE802.11 header */ 1595 m_adj(m0, sizeof (struct ieee80211_frame)); 1596 1597 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1598 &nsegs, 0); 1599 if (error != 0 && error != EFBIG) { 1600 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1601 error); 1602 m_freem(m0); 1603 return error; 1604 } 1605 if (error != 0) { 1606 mnew = m_defrag(m0, M_NOWAIT); 1607 if (mnew == NULL) { 1608 device_printf(sc->sc_dev, 1609 "could not defragment mbuf\n"); 1610 m_freem(m0); 1611 return ENOBUFS; 1612 } 1613 m0 = mnew; 1614 1615 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1616 segs, &nsegs, 0); 1617 if (error != 0) { 1618 device_printf(sc->sc_dev, 1619 "could not map mbuf (error %d)\n", error); 1620 m_freem(m0); 1621 return error; 1622 } 1623 } 1624 1625 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1626 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1627 if (error != 0) { 1628 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1629 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1630 m_freem(m0); 1631 return error; 1632 } 1633 1634 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1635 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1636 1637 sbd = &sc->stbd_list[sc->txcur]; 1638 sbd->type = IPW_SBD_TYPE_HEADER; 1639 sbd->priv = shdr; 1640 sbd->bd->physaddr = htole32(physaddr); 1641 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1642 sbd->bd->nfrag = 1 + nsegs; 1643 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1644 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1645 1646 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1647 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1648 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1649 ":")); 1650 1651 sc->txfree--; 1652 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1653 1654 sbuf->m = m0; 1655 sbuf->ni = ni; 1656 1657 for (i = 0; i < nsegs; i++) { 1658 sbd = &sc->stbd_list[sc->txcur]; 1659 1660 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1661 sbd->bd->len = htole32(segs[i].ds_len); 1662 sbd->bd->nfrag = 0; 1663 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1664 if (i == nsegs - 1) { 1665 sbd->type = IPW_SBD_TYPE_DATA; 1666 sbd->priv = sbuf; 1667 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1668 } else { 1669 sbd->type = IPW_SBD_TYPE_NOASSOC; 1670 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1671 } 1672 1673 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1674 1675 sc->txfree--; 1676 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1677 } 1678 1679 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1680 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1681 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1682 1683 /* kick firmware */ 1684 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1685 1686 return 0; 1687} 1688 1689static int 1690ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1691 const struct ieee80211_bpf_params *params) 1692{ 1693 /* no support; just discard */ 1694 m_freem(m); 1695 ieee80211_free_node(ni); 1696 return 0; 1697} 1698 1699static int 1700ipw_transmit(struct ieee80211com *ic, struct mbuf *m) 1701{ 1702 struct ipw_softc *sc = ic->ic_softc; 1703 int error; 1704 1705 IPW_LOCK(sc); 1706 if ((sc->flags & IPW_FLAG_RUNNING) == 0) { 1707 IPW_UNLOCK(sc); 1708 return (ENXIO); 1709 } 1710 error = mbufq_enqueue(&sc->sc_snd, m); 1711 if (error) { 1712 IPW_UNLOCK(sc); 1713 return (error); 1714 } 1715 ipw_start(sc); 1716 IPW_UNLOCK(sc); 1717 return (0); 1718} 1719 1720static void 1721ipw_start(struct ipw_softc *sc) 1722{ 1723 struct ieee80211_node *ni; 1724 struct mbuf *m; 1725 1726 IPW_LOCK_ASSERT(sc); 1727 1728 while (sc->txfree >= 1 + IPW_MAX_NSEG && 1729 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1730 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1731 if (ipw_tx_start(sc, m, ni) != 0) { 1732 if_inc_counter(ni->ni_vap->iv_ifp, 1733 IFCOUNTER_OERRORS, 1); 1734 ieee80211_free_node(ni); 1735 break; 1736 } 1737 /* start watchdog timer */ 1738 sc->sc_tx_timer = 5; 1739 } 1740} 1741 1742static void 1743ipw_watchdog(void *arg) 1744{ 1745 struct ipw_softc *sc = arg; 1746 struct ieee80211com *ic = &sc->sc_ic; 1747 1748 IPW_LOCK_ASSERT(sc); 1749 1750 if (sc->sc_tx_timer > 0) { 1751 if (--sc->sc_tx_timer == 0) { 1752 device_printf(sc->sc_dev, "device timeout\n"); 1753 counter_u64_add(ic->ic_oerrors, 1); 1754 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1755 } 1756 } 1757 if (sc->sc_scan_timer > 0) { 1758 if (--sc->sc_scan_timer == 0) { 1759 DPRINTFN(3, ("Scan timeout\n")); 1760 /* End the scan */ 1761 if (sc->flags & IPW_FLAG_SCANNING) { 1762 IPW_UNLOCK(sc); 1763 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1764 IPW_LOCK(sc); 1765 sc->flags &= ~IPW_FLAG_SCANNING; 1766 } 1767 } 1768 } 1769 if (sc->flags & IPW_FLAG_RUNNING) 1770 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1771} 1772 1773static void 1774ipw_parent(struct ieee80211com *ic) 1775{ 1776 struct ipw_softc *sc = ic->ic_softc; 1777 int startall = 0; 1778 1779 IPW_LOCK(sc); 1780 if (ic->ic_nrunning > 0) { 1781 if (!(sc->flags & IPW_FLAG_RUNNING)) { 1782 ipw_init_locked(sc); 1783 startall = 1; 1784 } 1785 } else if (sc->flags & IPW_FLAG_RUNNING) 1786 ipw_stop_locked(sc); 1787 IPW_UNLOCK(sc); 1788 if (startall) 1789 ieee80211_start_all(ic); 1790} 1791 1792static void 1793ipw_stop_master(struct ipw_softc *sc) 1794{ 1795 uint32_t tmp; 1796 int ntries; 1797 1798 /* disable interrupts */ 1799 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1800 1801 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1802 for (ntries = 0; ntries < 50; ntries++) { 1803 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1804 break; 1805 DELAY(10); 1806 } 1807 if (ntries == 50) 1808 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1809 1810 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1811 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1812 1813 /* Clear all flags except the following */ 1814 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1815} 1816 1817static int 1818ipw_reset(struct ipw_softc *sc) 1819{ 1820 uint32_t tmp; 1821 int ntries; 1822 1823 ipw_stop_master(sc); 1824 1825 /* move adapter to D0 state */ 1826 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1827 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1828 1829 /* wait for clock stabilization */ 1830 for (ntries = 0; ntries < 1000; ntries++) { 1831 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1832 break; 1833 DELAY(200); 1834 } 1835 if (ntries == 1000) 1836 return EIO; 1837 1838 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1839 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1840 1841 DELAY(10); 1842 1843 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1844 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1845 1846 return 0; 1847} 1848 1849static int 1850ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1851{ 1852 int ms = hz < 1000 ? 1 : hz/10; 1853 int i, error; 1854 1855 for (i = 0; i < 100; i++) { 1856 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1857 return 0; 1858 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1859 if (error == 0 || error != EWOULDBLOCK) 1860 return 0; 1861 } 1862 DPRINTF(("%s: timeout waiting for %s\n", 1863 __func__, waitfor ? "disable" : "enable")); 1864 return ETIMEDOUT; 1865} 1866 1867static int 1868ipw_enable(struct ipw_softc *sc) 1869{ 1870 int error; 1871 1872 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1873 DPRINTF(("Enable adapter\n")); 1874 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1875 if (error != 0) 1876 return error; 1877 error = ipw_waitfordisable(sc, 0); 1878 if (error != 0) 1879 return error; 1880 sc->flags |= IPW_FLAG_ENABLED; 1881 } 1882 return 0; 1883} 1884 1885static int 1886ipw_disable(struct ipw_softc *sc) 1887{ 1888 int error; 1889 1890 if (sc->flags & IPW_FLAG_ENABLED) { 1891 DPRINTF(("Disable adapter\n")); 1892 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1893 if (error != 0) 1894 return error; 1895 error = ipw_waitfordisable(sc, 1); 1896 if (error != 0) 1897 return error; 1898 sc->flags &= ~IPW_FLAG_ENABLED; 1899 } 1900 return 0; 1901} 1902 1903/* 1904 * Upload the microcode to the device. 1905 */ 1906static int 1907ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1908{ 1909 int ntries; 1910 1911 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1912 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1913 1914 MEM_WRITE_2(sc, 0x220000, 0x0703); 1915 MEM_WRITE_2(sc, 0x220000, 0x0707); 1916 1917 MEM_WRITE_1(sc, 0x210014, 0x72); 1918 MEM_WRITE_1(sc, 0x210014, 0x72); 1919 1920 MEM_WRITE_1(sc, 0x210000, 0x40); 1921 MEM_WRITE_1(sc, 0x210000, 0x00); 1922 MEM_WRITE_1(sc, 0x210000, 0x40); 1923 1924 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1925 1926 MEM_WRITE_1(sc, 0x210000, 0x00); 1927 MEM_WRITE_1(sc, 0x210000, 0x00); 1928 MEM_WRITE_1(sc, 0x210000, 0x80); 1929 1930 MEM_WRITE_2(sc, 0x220000, 0x0703); 1931 MEM_WRITE_2(sc, 0x220000, 0x0707); 1932 1933 MEM_WRITE_1(sc, 0x210014, 0x72); 1934 MEM_WRITE_1(sc, 0x210014, 0x72); 1935 1936 MEM_WRITE_1(sc, 0x210000, 0x00); 1937 MEM_WRITE_1(sc, 0x210000, 0x80); 1938 1939 for (ntries = 0; ntries < 10; ntries++) { 1940 if (MEM_READ_1(sc, 0x210000) & 1) 1941 break; 1942 DELAY(10); 1943 } 1944 if (ntries == 10) { 1945 device_printf(sc->sc_dev, 1946 "timeout waiting for ucode to initialize\n"); 1947 return EIO; 1948 } 1949 1950 MEM_WRITE_4(sc, 0x3000e0, 0); 1951 1952 return 0; 1953} 1954 1955/* set of macros to handle unaligned little endian data in firmware image */ 1956#define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1957#define GETLE16(p) ((p)[0] | (p)[1] << 8) 1958static int 1959ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 1960{ 1961 const uint8_t *p, *end; 1962 uint32_t tmp, dst; 1963 uint16_t len; 1964 int error; 1965 1966 p = fw; 1967 end = fw + size; 1968 while (p < end) { 1969 dst = GETLE32(p); p += 4; 1970 len = GETLE16(p); p += 2; 1971 1972 ipw_write_mem_1(sc, dst, p, len); 1973 p += len; 1974 } 1975 1976 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 1977 IPW_IO_LED_OFF); 1978 1979 /* enable interrupts */ 1980 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1981 1982 /* kick the firmware */ 1983 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1984 1985 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1986 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 1987 1988 /* wait at most one second for firmware initialization to complete */ 1989 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 1990 device_printf(sc->sc_dev, "timeout waiting for firmware " 1991 "initialization to complete\n"); 1992 return error; 1993 } 1994 1995 tmp = CSR_READ_4(sc, IPW_CSR_IO); 1996 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 1997 IPW_IO_GPIO3_MASK); 1998 1999 return 0; 2000} 2001 2002static int 2003ipw_setwepkeys(struct ipw_softc *sc) 2004{ 2005 struct ieee80211com *ic = &sc->sc_ic; 2006 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2007 struct ipw_wep_key wepkey; 2008 struct ieee80211_key *wk; 2009 int error, i; 2010 2011 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2012 wk = &vap->iv_nw_keys[i]; 2013 2014 if (wk->wk_cipher == NULL || 2015 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2016 continue; 2017 2018 wepkey.idx = i; 2019 wepkey.len = wk->wk_keylen; 2020 memset(wepkey.key, 0, sizeof wepkey.key); 2021 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2022 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2023 wepkey.len)); 2024 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2025 sizeof wepkey); 2026 if (error != 0) 2027 return error; 2028 } 2029 return 0; 2030} 2031 2032static int 2033ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2034{ 2035 struct ipw_wpa_ie wpaie; 2036 2037 memset(&wpaie, 0, sizeof(wpaie)); 2038 wpaie.len = htole32(ielen); 2039 /* XXX verify length */ 2040 memcpy(&wpaie.ie, ie, ielen); 2041 DPRINTF(("Setting WPA IE\n")); 2042 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2043} 2044 2045static int 2046ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2047{ 2048 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2049 2050 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2051 DPRINTF(("Setting mandatory BSSID to null\n")); 2052 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2053 } else { 2054 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2055 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2056 bssid, IEEE80211_ADDR_LEN); 2057 } 2058} 2059 2060static int 2061ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2062{ 2063 if (ssidlen == 0) { 2064 /* 2065 * A bug in the firmware breaks the ``don't associate'' 2066 * bit in the scan options command. To compensate for 2067 * this install a bogus ssid when no ssid is specified 2068 * so the firmware won't try to associate. 2069 */ 2070 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2071 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2072 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2073 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2074 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2075 "\x3c\x3d", IEEE80211_NWID_LEN); 2076 } else { 2077#ifdef IPW_DEBUG 2078 if (ipw_debug > 0) { 2079 printf("Setting ESSID to "); 2080 ieee80211_print_essid(ssid, ssidlen); 2081 printf("\n"); 2082 } 2083#endif 2084 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2085 } 2086} 2087 2088static int 2089ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2090{ 2091 struct ipw_scan_options opts; 2092 2093 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2094 opts.channels = htole32(chanmask); 2095 opts.flags = htole32(flags); 2096 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2097} 2098 2099static int 2100ipw_scan(struct ipw_softc *sc) 2101{ 2102 uint32_t params; 2103 int error; 2104 2105 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2106 2107 if (sc->flags & IPW_FLAG_SCANNING) 2108 return (EBUSY); 2109 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2110 2111 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2112 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2113 if (error != 0) 2114 goto done; 2115 2116 /* 2117 * Setup null/bogus ssid so firmware doesn't use any previous 2118 * ssid to try and associate. This is because the ``don't 2119 * associate'' option bit is broken (sigh). 2120 */ 2121 error = ipw_setssid(sc, NULL, 0); 2122 if (error != 0) 2123 goto done; 2124 2125 /* 2126 * NB: the adapter may be disabled on association lost; 2127 * if so just re-enable it to kick off scanning. 2128 */ 2129 DPRINTF(("Starting scan\n")); 2130 sc->sc_scan_timer = 3; 2131 if (sc->flags & IPW_FLAG_ENABLED) { 2132 params = 0; /* XXX? */ 2133 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2134 ¶ms, sizeof(params)); 2135 } else 2136 error = ipw_enable(sc); 2137done: 2138 if (error != 0) { 2139 DPRINTF(("Scan failed\n")); 2140 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2141 } 2142 return (error); 2143} 2144 2145static int 2146ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2147{ 2148 struct ieee80211com *ic = &sc->sc_ic; 2149 uint32_t data; 2150 int error; 2151 2152 data = htole32(ieee80211_chan2ieee(ic, chan)); 2153 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2154 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2155 if (error == 0) 2156 ipw_setcurchan(sc, chan); 2157 return error; 2158} 2159 2160static void 2161ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2162{ 2163 struct ipw_softc *sc = ic->ic_softc; 2164 struct ieee80211_node *ni = vap->iv_bss; 2165 struct ipw_security security; 2166 uint32_t data; 2167 int error; 2168 2169 IPW_LOCK(sc); 2170 error = ipw_disable(sc); 2171 if (error != 0) 2172 goto done; 2173 2174 memset(&security, 0, sizeof security); 2175 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2176 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2177 security.ciphers = htole32(IPW_CIPHER_NONE); 2178 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2179 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2180 sizeof security); 2181 if (error != 0) 2182 goto done; 2183 2184 data = htole32(vap->iv_rtsthreshold); 2185 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2186 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2187 if (error != 0) 2188 goto done; 2189 2190 data = htole32(vap->iv_fragthreshold); 2191 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2192 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2193 if (error != 0) 2194 goto done; 2195 2196 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2197 error = ipw_setwepkeys(sc); 2198 if (error != 0) 2199 goto done; 2200 2201 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2202 data = htole32(vap->iv_def_txkey); 2203 DPRINTF(("Setting wep tx key index to %u\n", 2204 le32toh(data))); 2205 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2206 sizeof data); 2207 if (error != 0) 2208 goto done; 2209 } 2210 } 2211 2212 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2213 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2214 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2215 if (error != 0) 2216 goto done; 2217 2218 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2219 if (error != 0) 2220 goto done; 2221 2222 error = ipw_setbssid(sc, ni->ni_bssid); 2223 if (error != 0) 2224 goto done; 2225 2226 if (vap->iv_appie_wpa != NULL) { 2227 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2228 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2229 if (error != 0) 2230 goto done; 2231 } 2232 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2233 error = ipw_setchannel(sc, ni->ni_chan); 2234 if (error != 0) 2235 goto done; 2236 } 2237 2238 /* lock scan to ap's channel and enable associate */ 2239 error = ipw_setscanopts(sc, 2240 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2241 if (error != 0) 2242 goto done; 2243 2244 error = ipw_enable(sc); /* finally, enable adapter */ 2245 if (error == 0) 2246 sc->flags |= IPW_FLAG_ASSOCIATING; 2247done: 2248 IPW_UNLOCK(sc); 2249} 2250 2251static void 2252ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2253{ 2254 struct ieee80211_node *ni = vap->iv_bss; 2255 struct ipw_softc *sc = ic->ic_softc; 2256 2257 IPW_LOCK(sc); 2258 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2259 /* 2260 * NB: don't try to do this if ipw_stop_master has 2261 * shutdown the firmware and disabled interrupts. 2262 */ 2263 if (sc->flags & IPW_FLAG_FW_INITED) { 2264 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2265 /* 2266 * NB: firmware currently ignores bssid parameter, but 2267 * supply it in case this changes (follow linux driver). 2268 */ 2269 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2270 ni->ni_bssid, IEEE80211_ADDR_LEN); 2271 } 2272 IPW_UNLOCK(sc); 2273} 2274 2275/* 2276 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2277 * It is called on firmware panics or on watchdog timeouts. 2278 */ 2279static void 2280ipw_init_task(void *context, int pending) 2281{ 2282 ipw_init(context); 2283} 2284 2285static void 2286ipw_init(void *priv) 2287{ 2288 struct ipw_softc *sc = priv; 2289 struct ieee80211com *ic = &sc->sc_ic; 2290 2291 IPW_LOCK(sc); 2292 ipw_init_locked(sc); 2293 IPW_UNLOCK(sc); 2294 2295 if (sc->flags & IPW_FLAG_RUNNING) 2296 ieee80211_start_all(ic); /* start all vap's */ 2297} 2298 2299static void 2300ipw_init_locked(struct ipw_softc *sc) 2301{ 2302 struct ieee80211com *ic = &sc->sc_ic; 2303 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2304 const struct firmware *fp; 2305 const struct ipw_firmware_hdr *hdr; 2306 const char *fw; 2307 2308 IPW_LOCK_ASSERT(sc); 2309 2310 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2311 ieee80211_state_name[vap->iv_state], sc->flags)); 2312 2313 /* 2314 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2315 * when loading the firmware and we don't want to be called during this 2316 * operation. 2317 */ 2318 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2319 return; 2320 sc->flags |= IPW_FLAG_INIT_LOCKED; 2321 2322 ipw_stop_locked(sc); 2323 2324 if (ipw_reset(sc) != 0) { 2325 device_printf(sc->sc_dev, "could not reset adapter\n"); 2326 goto fail; 2327 } 2328 2329 if (sc->sc_firmware == NULL) { 2330 device_printf(sc->sc_dev, "no firmware\n"); 2331 goto fail; 2332 } 2333 /* NB: consistency already checked on load */ 2334 fp = sc->sc_firmware; 2335 hdr = (const struct ipw_firmware_hdr *)fp->data; 2336 2337 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2338 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2339 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2340 device_printf(sc->sc_dev, "could not load microcode\n"); 2341 goto fail; 2342 } 2343 2344 ipw_stop_master(sc); 2345 2346 /* 2347 * Setup tx, rx and status rings. 2348 */ 2349 sc->txold = IPW_NTBD - 1; 2350 sc->txcur = 0; 2351 sc->txfree = IPW_NTBD - 2; 2352 sc->rxcur = IPW_NRBD - 1; 2353 2354 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2355 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2356 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2357 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2358 2359 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2360 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2361 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2362 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2363 2364 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2365 2366 fw = (const char *)fp->data + sizeof *hdr; 2367 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2368 device_printf(sc->sc_dev, "could not load firmware\n"); 2369 goto fail; 2370 } 2371 2372 sc->flags |= IPW_FLAG_FW_INITED; 2373 2374 /* retrieve information tables base addresses */ 2375 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2376 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2377 2378 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2379 2380 if (ipw_config(sc) != 0) { 2381 device_printf(sc->sc_dev, "device configuration failed\n"); 2382 goto fail; 2383 } 2384 2385 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2386 sc->flags |= IPW_FLAG_RUNNING; 2387 sc->flags &= ~IPW_FLAG_INIT_LOCKED; 2388 return; 2389 2390fail: 2391 ipw_stop_locked(sc); 2392 sc->flags &= ~IPW_FLAG_INIT_LOCKED; 2393} 2394 2395static int 2396ipw_config(struct ipw_softc *sc) 2397{ 2398 struct ieee80211com *ic = &sc->sc_ic; 2399 struct ipw_configuration config; 2400 uint32_t data; 2401 int error; 2402 2403 error = ipw_disable(sc); 2404 if (error != 0) 2405 return error; 2406 2407 switch (ic->ic_opmode) { 2408 case IEEE80211_M_STA: 2409 case IEEE80211_M_HOSTAP: 2410 case IEEE80211_M_WDS: /* XXX */ 2411 data = htole32(IPW_MODE_BSS); 2412 break; 2413 case IEEE80211_M_IBSS: 2414 case IEEE80211_M_AHDEMO: 2415 data = htole32(IPW_MODE_IBSS); 2416 break; 2417 case IEEE80211_M_MONITOR: 2418 data = htole32(IPW_MODE_MONITOR); 2419 break; 2420 default: 2421 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2422 return EINVAL; 2423 } 2424 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2425 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2426 if (error != 0) 2427 return error; 2428 2429 if (ic->ic_opmode == IEEE80211_M_IBSS || 2430 ic->ic_opmode == IEEE80211_M_MONITOR) { 2431 error = ipw_setchannel(sc, ic->ic_curchan); 2432 if (error != 0) 2433 return error; 2434 } 2435 2436 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2437 return ipw_enable(sc); 2438 2439 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2440 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2441 if (ic->ic_opmode == IEEE80211_M_IBSS) 2442 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2443 if (ic->ic_promisc > 0) 2444 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2445 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2446 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2447 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2448 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2449 if (error != 0) 2450 return error; 2451 2452 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2453 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2454 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2455 if (error != 0) 2456 return error; 2457 2458 /* Use the same rate set */ 2459 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2460 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2461 if (error != 0) 2462 return error; 2463 2464 /* Use the same rate set */ 2465 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2466 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2467 if (error != 0) 2468 return error; 2469 2470 data = htole32(IPW_POWER_MODE_CAM); 2471 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2472 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2473 if (error != 0) 2474 return error; 2475 2476 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2477 data = htole32(32); /* default value */ 2478 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2479 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2480 sizeof data); 2481 if (error != 0) 2482 return error; 2483 } 2484 2485 return 0; 2486} 2487 2488static void 2489ipw_stop(void *priv) 2490{ 2491 struct ipw_softc *sc = priv; 2492 2493 IPW_LOCK(sc); 2494 ipw_stop_locked(sc); 2495 IPW_UNLOCK(sc); 2496} 2497 2498static void 2499ipw_stop_locked(struct ipw_softc *sc) 2500{ 2501 int i; 2502 2503 IPW_LOCK_ASSERT(sc); 2504 2505 callout_stop(&sc->sc_wdtimer); 2506 ipw_stop_master(sc); 2507 2508 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2509 2510 /* 2511 * Release tx buffers. 2512 */ 2513 for (i = 0; i < IPW_NTBD; i++) 2514 ipw_release_sbd(sc, &sc->stbd_list[i]); 2515 2516 sc->sc_tx_timer = 0; 2517 sc->flags &= ~IPW_FLAG_RUNNING; 2518} 2519 2520static int 2521ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2522{ 2523 struct ipw_softc *sc = arg1; 2524 uint32_t i, size, buf[256]; 2525 2526 memset(buf, 0, sizeof buf); 2527 2528 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2529 return SYSCTL_OUT(req, buf, sizeof buf); 2530 2531 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2532 2533 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2534 for (i = 1; i < size; i++) 2535 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2536 2537 return SYSCTL_OUT(req, buf, size); 2538} 2539 2540static int 2541ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2542{ 2543 struct ipw_softc *sc = arg1; 2544 int val; 2545 2546 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2547 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2548 2549 return SYSCTL_OUT(req, &val, sizeof val); 2550} 2551 2552static uint32_t 2553ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2554{ 2555 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2556} 2557 2558static void 2559ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2560{ 2561 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2562} 2563 2564#if 0 2565static int 2566ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2567{ 2568 uint32_t addr, info; 2569 uint16_t count, size; 2570 uint32_t total; 2571 2572 /* addr[4] + count[2] + size[2] */ 2573 addr = MEM_READ_4(sc, sc->table2_base + off); 2574 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2575 2576 count = info >> 16; 2577 size = info & 0xffff; 2578 total = count * size; 2579 2580 if (total > *len) { 2581 *len = total; 2582 return EINVAL; 2583 } 2584 2585 *len = total; 2586 ipw_read_mem_1(sc, addr, buf, total); 2587 2588 return 0; 2589} 2590 2591static void 2592ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2593 bus_size_t count) 2594{ 2595 for (; count > 0; offset++, datap++, count--) { 2596 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2597 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2598 } 2599} 2600#endif 2601 2602static void 2603ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2604 bus_size_t count) 2605{ 2606 for (; count > 0; offset++, datap++, count--) { 2607 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2608 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2609 } 2610} 2611 2612static void 2613ipw_scan_start(struct ieee80211com *ic) 2614{ 2615 struct ipw_softc *sc = ic->ic_softc; 2616 2617 IPW_LOCK(sc); 2618 ipw_scan(sc); 2619 IPW_UNLOCK(sc); 2620} 2621 2622static void 2623ipw_getradiocaps(struct ieee80211com *ic, 2624 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2625{ 2626 struct ipw_softc *sc = ic->ic_softc; 2627 uint8_t bands[IEEE80211_MODE_BYTES]; 2628 int i; 2629 2630 memset(bands, 0, sizeof(bands)); 2631 setbit(bands, IEEE80211_MODE_11B); 2632 2633 for (i = 1; i < 16; i++) { 2634 if (sc->chanmask & (1 << i)) { 2635 ieee80211_add_channel(chans, maxchans, nchans, 2636 i, 0, 0, 0, bands); 2637 } 2638 } 2639 2640} 2641 2642static void 2643ipw_set_channel(struct ieee80211com *ic) 2644{ 2645 struct ipw_softc *sc = ic->ic_softc; 2646 2647 IPW_LOCK(sc); 2648 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2649 ipw_disable(sc); 2650 ipw_setchannel(sc, ic->ic_curchan); 2651 ipw_enable(sc); 2652 } 2653 IPW_UNLOCK(sc); 2654} 2655 2656static void 2657ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2658{ 2659 /* NB: all channels are scanned at once */ 2660} 2661 2662static void 2663ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2664{ 2665 /* NB: don't try to abort scan; wait for firmware to finish */ 2666} 2667 2668static void 2669ipw_scan_end(struct ieee80211com *ic) 2670{ 2671 struct ipw_softc *sc = ic->ic_softc; 2672 2673 IPW_LOCK(sc); 2674 sc->flags &= ~IPW_FLAG_SCANNING; 2675 IPW_UNLOCK(sc); 2676} 2677