if_ipw.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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/11/sys/dev/ipw/if_ipw.c 330897 2018-03-14 03:19:51Z eadler $"); 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_var.h> 66#include <net/if_arp.h> 67#include <net/ethernet.h> 68#include <net/if_dl.h> 69#include <net/if_media.h> 70#include <net/if_types.h> 71 72#include <net80211/ieee80211_var.h> 73#include <net80211/ieee80211_radiotap.h> 74 75#include <netinet/in.h> 76#include <netinet/in_systm.h> 77#include <netinet/in_var.h> 78#include <netinet/ip.h> 79#include <netinet/if_ether.h> 80 81#include <dev/ipw/if_ipwreg.h> 82#include <dev/ipw/if_ipwvar.h> 83 84#define IPW_DEBUG 85#ifdef IPW_DEBUG 86#define DPRINTF(x) do { if (ipw_debug > 0) printf x; } while (0) 87#define DPRINTFN(n, x) do { if (ipw_debug >= (n)) printf x; } while (0) 88int ipw_debug = 0; 89SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level"); 90#else 91#define DPRINTF(x) 92#define DPRINTFN(n, x) 93#endif 94 95MODULE_DEPEND(ipw, pci, 1, 1, 1); 96MODULE_DEPEND(ipw, wlan, 1, 1, 1); 97MODULE_DEPEND(ipw, firmware, 1, 1, 1); 98 99struct ipw_ident { 100 uint16_t vendor; 101 uint16_t device; 102 const char *name; 103}; 104 105static const struct ipw_ident ipw_ident_table[] = { 106 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" }, 107 108 { 0, 0, NULL } 109}; 110 111static struct ieee80211vap *ipw_vap_create(struct ieee80211com *, 112 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 113 const uint8_t [IEEE80211_ADDR_LEN], 114 const uint8_t [IEEE80211_ADDR_LEN]); 115static void ipw_vap_delete(struct ieee80211vap *); 116static int ipw_dma_alloc(struct ipw_softc *); 117static void ipw_release(struct ipw_softc *); 118static void ipw_media_status(struct ifnet *, struct ifmediareq *); 119static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int); 120static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t); 121static uint16_t ipw_read_chanmask(struct ipw_softc *); 122static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *); 123static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *); 124static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *, 125 struct ipw_soft_bd *, struct ipw_soft_buf *); 126static void ipw_rx_intr(struct ipw_softc *); 127static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *); 128static void ipw_tx_intr(struct ipw_softc *); 129static void ipw_intr(void *); 130static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int); 131static const char * ipw_cmdname(int); 132static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t); 133static int ipw_tx_start(struct ipw_softc *, struct mbuf *, 134 struct ieee80211_node *); 135static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *, 136 const struct ieee80211_bpf_params *); 137static int ipw_transmit(struct ieee80211com *, struct mbuf *); 138static void ipw_start(struct ipw_softc *); 139static void ipw_watchdog(void *); 140static void ipw_parent(struct ieee80211com *); 141static void ipw_stop_master(struct ipw_softc *); 142static int ipw_enable(struct ipw_softc *); 143static int ipw_disable(struct ipw_softc *); 144static int ipw_reset(struct ipw_softc *); 145static int ipw_load_ucode(struct ipw_softc *, const char *, int); 146static int ipw_load_firmware(struct ipw_softc *, const char *, int); 147static int ipw_config(struct ipw_softc *); 148static void ipw_assoc(struct ieee80211com *, struct ieee80211vap *); 149static void ipw_disassoc(struct ieee80211com *, struct ieee80211vap *); 150static void ipw_init_task(void *, int); 151static void ipw_init(void *); 152static void ipw_init_locked(struct ipw_softc *); 153static void ipw_stop(void *); 154static void ipw_stop_locked(struct ipw_softc *); 155static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS); 156static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS); 157static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t); 158static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t); 159#if 0 160static int ipw_read_table2(struct ipw_softc *, uint32_t, void *, 161 uint32_t *); 162static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *, 163 bus_size_t); 164#endif 165static void ipw_write_mem_1(struct ipw_softc *, bus_size_t, 166 const uint8_t *, bus_size_t); 167static int ipw_scan(struct ipw_softc *); 168static void ipw_scan_start(struct ieee80211com *); 169static void ipw_scan_end(struct ieee80211com *); 170static void ipw_getradiocaps(struct ieee80211com *, int, int *, 171 struct ieee80211_channel[]); 172static void ipw_set_channel(struct ieee80211com *); 173static void ipw_scan_curchan(struct ieee80211_scan_state *, 174 unsigned long maxdwell); 175static void ipw_scan_mindwell(struct ieee80211_scan_state *); 176 177static int ipw_probe(device_t); 178static int ipw_attach(device_t); 179static int ipw_detach(device_t); 180static int ipw_shutdown(device_t); 181static int ipw_suspend(device_t); 182static int ipw_resume(device_t); 183 184static device_method_t ipw_methods[] = { 185 /* Device interface */ 186 DEVMETHOD(device_probe, ipw_probe), 187 DEVMETHOD(device_attach, ipw_attach), 188 DEVMETHOD(device_detach, ipw_detach), 189 DEVMETHOD(device_shutdown, ipw_shutdown), 190 DEVMETHOD(device_suspend, ipw_suspend), 191 DEVMETHOD(device_resume, ipw_resume), 192 193 DEVMETHOD_END 194}; 195 196static driver_t ipw_driver = { 197 "ipw", 198 ipw_methods, 199 sizeof (struct ipw_softc) 200}; 201 202static devclass_t ipw_devclass; 203 204DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL); 205 206MODULE_VERSION(ipw, 1); 207 208static int 209ipw_probe(device_t dev) 210{ 211 const struct ipw_ident *ident; 212 213 for (ident = ipw_ident_table; ident->name != NULL; ident++) { 214 if (pci_get_vendor(dev) == ident->vendor && 215 pci_get_device(dev) == ident->device) { 216 device_set_desc(dev, ident->name); 217 return (BUS_PROBE_DEFAULT); 218 } 219 } 220 return ENXIO; 221} 222 223/* Base Address Register */ 224static int 225ipw_attach(device_t dev) 226{ 227 struct ipw_softc *sc = device_get_softc(dev); 228 struct ieee80211com *ic = &sc->sc_ic; 229 uint16_t val; 230 int error, i; 231 232 sc->sc_dev = dev; 233 234 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 235 MTX_DEF | MTX_RECURSE); 236 mbufq_init(&sc->sc_snd, ifqmaxlen); 237 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc); 238 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 239 240 pci_write_config(dev, 0x41, 0, 1); 241 242 /* enable bus-mastering */ 243 pci_enable_busmaster(dev); 244 245 i = PCIR_BAR(0); 246 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE); 247 if (sc->mem == NULL) { 248 device_printf(dev, "could not allocate memory resource\n"); 249 goto fail; 250 } 251 252 sc->sc_st = rman_get_bustag(sc->mem); 253 sc->sc_sh = rman_get_bushandle(sc->mem); 254 255 i = 0; 256 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i, 257 RF_ACTIVE | RF_SHAREABLE); 258 if (sc->irq == NULL) { 259 device_printf(dev, "could not allocate interrupt resource\n"); 260 goto fail1; 261 } 262 263 if (ipw_reset(sc) != 0) { 264 device_printf(dev, "could not reset adapter\n"); 265 goto fail2; 266 } 267 268 if (ipw_dma_alloc(sc) != 0) { 269 device_printf(dev, "could not allocate DMA resources\n"); 270 goto fail2; 271 } 272 273 ic->ic_softc = sc; 274 ic->ic_name = device_get_nameunit(dev); 275 ic->ic_opmode = IEEE80211_M_STA; 276 ic->ic_phytype = IEEE80211_T_DS; 277 278 /* set device capabilities */ 279 ic->ic_caps = 280 IEEE80211_C_STA /* station mode supported */ 281 | IEEE80211_C_IBSS /* IBSS mode supported */ 282 | IEEE80211_C_MONITOR /* monitor mode supported */ 283 | IEEE80211_C_PMGT /* power save supported */ 284 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 285 | IEEE80211_C_WPA /* 802.11i supported */ 286 ; 287 288 /* read MAC address from EEPROM */ 289 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0); 290 ic->ic_macaddr[0] = val >> 8; 291 ic->ic_macaddr[1] = val & 0xff; 292 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1); 293 ic->ic_macaddr[2] = val >> 8; 294 ic->ic_macaddr[3] = val & 0xff; 295 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2); 296 ic->ic_macaddr[4] = val >> 8; 297 ic->ic_macaddr[5] = val & 0xff; 298 299 sc->chanmask = ipw_read_chanmask(sc); 300 ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, 301 ic->ic_channels); 302 303 /* check support for radio transmitter switch in EEPROM */ 304 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8)) 305 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH; 306 307 ieee80211_ifattach(ic); 308 ic->ic_scan_start = ipw_scan_start; 309 ic->ic_scan_end = ipw_scan_end; 310 ic->ic_getradiocaps = ipw_getradiocaps; 311 ic->ic_set_channel = ipw_set_channel; 312 ic->ic_scan_curchan = ipw_scan_curchan; 313 ic->ic_scan_mindwell = ipw_scan_mindwell; 314 ic->ic_raw_xmit = ipw_raw_xmit; 315 ic->ic_vap_create = ipw_vap_create; 316 ic->ic_vap_delete = ipw_vap_delete; 317 ic->ic_transmit = ipw_transmit; 318 ic->ic_parent = ipw_parent; 319 320 ieee80211_radiotap_attach(ic, 321 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 322 IPW_TX_RADIOTAP_PRESENT, 323 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 324 IPW_RX_RADIOTAP_PRESENT); 325 326 /* 327 * Add a few sysctl knobs. 328 */ 329 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 330 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio", 331 CTLTYPE_INT | CTLFLAG_RD, sc, 0, ipw_sysctl_radio, "I", 332 "radio transmitter switch state (0=off, 1=on)"); 333 334 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 335 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats", 336 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, ipw_sysctl_stats, "S", 337 "statistics"); 338 339 /* 340 * Hook our interrupt after all initialization is complete. 341 */ 342 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 343 NULL, ipw_intr, sc, &sc->sc_ih); 344 if (error != 0) { 345 device_printf(dev, "could not set up interrupt\n"); 346 goto fail3; 347 } 348 349 if (bootverbose) 350 ieee80211_announce(ic); 351 352 return 0; 353fail3: 354 ipw_release(sc); 355fail2: 356 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 357fail1: 358 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 359 sc->mem); 360fail: 361 mtx_destroy(&sc->sc_mtx); 362 return ENXIO; 363} 364 365static int 366ipw_detach(device_t dev) 367{ 368 struct ipw_softc *sc = device_get_softc(dev); 369 struct ieee80211com *ic = &sc->sc_ic; 370 371 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 372 373 ieee80211_draintask(ic, &sc->sc_init_task); 374 ipw_stop(sc); 375 376 ieee80211_ifdetach(ic); 377 378 callout_drain(&sc->sc_wdtimer); 379 mbufq_drain(&sc->sc_snd); 380 381 ipw_release(sc); 382 383 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 384 385 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 386 sc->mem); 387 388 if (sc->sc_firmware != NULL) { 389 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 390 sc->sc_firmware = NULL; 391 } 392 393 mtx_destroy(&sc->sc_mtx); 394 395 return 0; 396} 397 398static struct ieee80211vap * 399ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 400 enum ieee80211_opmode opmode, int flags, 401 const uint8_t bssid[IEEE80211_ADDR_LEN], 402 const uint8_t mac[IEEE80211_ADDR_LEN]) 403{ 404 struct ipw_softc *sc = ic->ic_softc; 405 struct ipw_vap *ivp; 406 struct ieee80211vap *vap; 407 const struct firmware *fp; 408 const struct ipw_firmware_hdr *hdr; 409 const char *imagename; 410 411 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 412 return NULL; 413 414 switch (opmode) { 415 case IEEE80211_M_STA: 416 imagename = "ipw_bss"; 417 break; 418 case IEEE80211_M_IBSS: 419 imagename = "ipw_ibss"; 420 break; 421 case IEEE80211_M_MONITOR: 422 imagename = "ipw_monitor"; 423 break; 424 default: 425 return NULL; 426 } 427 428 /* 429 * Load firmware image using the firmware(9) subsystem. Doing 430 * this unlocked is ok since we're single-threaded by the 431 * 802.11 layer. 432 */ 433 if (sc->sc_firmware == NULL || 434 strcmp(sc->sc_firmware->name, imagename) != 0) { 435 if (sc->sc_firmware != NULL) 436 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 437 sc->sc_firmware = firmware_get(imagename); 438 } 439 if (sc->sc_firmware == NULL) { 440 device_printf(sc->sc_dev, 441 "could not load firmware image '%s'\n", imagename); 442 return NULL; 443 } 444 fp = sc->sc_firmware; 445 if (fp->datasize < sizeof *hdr) { 446 device_printf(sc->sc_dev, 447 "firmware image too short %zu\n", fp->datasize); 448 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 449 sc->sc_firmware = NULL; 450 return NULL; 451 } 452 hdr = (const struct ipw_firmware_hdr *)fp->data; 453 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) + 454 le32toh(hdr->ucodesz)) { 455 device_printf(sc->sc_dev, 456 "firmware image too short %zu\n", fp->datasize); 457 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD); 458 sc->sc_firmware = NULL; 459 return NULL; 460 } 461 462 ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO); 463 vap = &ivp->vap; 464 465 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 466 /* override with driver methods */ 467 ivp->newstate = vap->iv_newstate; 468 vap->iv_newstate = ipw_newstate; 469 470 /* complete setup */ 471 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status, 472 mac); 473 ic->ic_opmode = opmode; 474 return vap; 475} 476 477static void 478ipw_vap_delete(struct ieee80211vap *vap) 479{ 480 struct ipw_vap *ivp = IPW_VAP(vap); 481 482 ieee80211_vap_detach(vap); 483 free(ivp, M_80211_VAP); 484} 485 486static int 487ipw_dma_alloc(struct ipw_softc *sc) 488{ 489 struct ipw_soft_bd *sbd; 490 struct ipw_soft_hdr *shdr; 491 struct ipw_soft_buf *sbuf; 492 bus_addr_t physaddr; 493 int error, i; 494 495 /* 496 * Allocate parent DMA tag for subsequent allocations. 497 */ 498 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 499 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 500 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 501 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat); 502 if (error != 0) { 503 device_printf(sc->sc_dev, "could not create parent DMA tag\n"); 504 goto fail; 505 } 506 507 /* 508 * Allocate and map tx ring. 509 */ 510 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 511 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL, 512 NULL, &sc->tbd_dmat); 513 if (error != 0) { 514 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 515 goto fail; 516 } 517 518 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list, 519 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map); 520 if (error != 0) { 521 device_printf(sc->sc_dev, 522 "could not allocate tx ring DMA memory\n"); 523 goto fail; 524 } 525 526 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list, 527 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0); 528 if (error != 0) { 529 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n"); 530 goto fail; 531 } 532 533 /* 534 * Allocate and map rx ring. 535 */ 536 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 537 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL, 538 NULL, &sc->rbd_dmat); 539 if (error != 0) { 540 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n"); 541 goto fail; 542 } 543 544 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list, 545 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map); 546 if (error != 0) { 547 device_printf(sc->sc_dev, 548 "could not allocate rx ring DMA memory\n"); 549 goto fail; 550 } 551 552 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list, 553 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0); 554 if (error != 0) { 555 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n"); 556 goto fail; 557 } 558 559 /* 560 * Allocate and map status ring. 561 */ 562 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT, 563 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0, 564 NULL, NULL, &sc->status_dmat); 565 if (error != 0) { 566 device_printf(sc->sc_dev, 567 "could not create status ring DMA tag\n"); 568 goto fail; 569 } 570 571 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list, 572 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map); 573 if (error != 0) { 574 device_printf(sc->sc_dev, 575 "could not allocate status ring DMA memory\n"); 576 goto fail; 577 } 578 579 error = bus_dmamap_load(sc->status_dmat, sc->status_map, 580 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys, 581 0); 582 if (error != 0) { 583 device_printf(sc->sc_dev, 584 "could not map status ring DMA memory\n"); 585 goto fail; 586 } 587 588 /* 589 * Allocate command DMA map. 590 */ 591 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 592 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1, 593 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat); 594 if (error != 0) { 595 device_printf(sc->sc_dev, "could not create command DMA tag\n"); 596 goto fail; 597 } 598 599 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map); 600 if (error != 0) { 601 device_printf(sc->sc_dev, 602 "could not create command DMA map\n"); 603 goto fail; 604 } 605 606 /* 607 * Allocate headers DMA maps. 608 */ 609 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 610 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1, 611 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat); 612 if (error != 0) { 613 device_printf(sc->sc_dev, "could not create header DMA tag\n"); 614 goto fail; 615 } 616 617 SLIST_INIT(&sc->free_shdr); 618 for (i = 0; i < IPW_NDATA; i++) { 619 shdr = &sc->shdr_list[i]; 620 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map); 621 if (error != 0) { 622 device_printf(sc->sc_dev, 623 "could not create header DMA map\n"); 624 goto fail; 625 } 626 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 627 } 628 629 /* 630 * Allocate tx buffers DMA maps. 631 */ 632 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 633 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0, 634 NULL, NULL, &sc->txbuf_dmat); 635 if (error != 0) { 636 device_printf(sc->sc_dev, "could not create tx DMA tag\n"); 637 goto fail; 638 } 639 640 SLIST_INIT(&sc->free_sbuf); 641 for (i = 0; i < IPW_NDATA; i++) { 642 sbuf = &sc->tx_sbuf_list[i]; 643 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map); 644 if (error != 0) { 645 device_printf(sc->sc_dev, 646 "could not create tx DMA map\n"); 647 goto fail; 648 } 649 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 650 } 651 652 /* 653 * Initialize tx ring. 654 */ 655 for (i = 0; i < IPW_NTBD; i++) { 656 sbd = &sc->stbd_list[i]; 657 sbd->bd = &sc->tbd_list[i]; 658 sbd->type = IPW_SBD_TYPE_NOASSOC; 659 } 660 661 /* 662 * Pre-allocate rx buffers and DMA maps. 663 */ 664 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT, 665 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL, 666 NULL, &sc->rxbuf_dmat); 667 if (error != 0) { 668 device_printf(sc->sc_dev, "could not create rx DMA tag\n"); 669 goto fail; 670 } 671 672 for (i = 0; i < IPW_NRBD; i++) { 673 sbd = &sc->srbd_list[i]; 674 sbuf = &sc->rx_sbuf_list[i]; 675 sbd->bd = &sc->rbd_list[i]; 676 677 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 678 if (sbuf->m == NULL) { 679 device_printf(sc->sc_dev, 680 "could not allocate rx mbuf\n"); 681 error = ENOMEM; 682 goto fail; 683 } 684 685 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map); 686 if (error != 0) { 687 device_printf(sc->sc_dev, 688 "could not create rx DMA map\n"); 689 goto fail; 690 } 691 692 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 693 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 694 &physaddr, 0); 695 if (error != 0) { 696 device_printf(sc->sc_dev, 697 "could not map rx DMA memory\n"); 698 goto fail; 699 } 700 701 sbd->type = IPW_SBD_TYPE_DATA; 702 sbd->priv = sbuf; 703 sbd->bd->physaddr = htole32(physaddr); 704 sbd->bd->len = htole32(MCLBYTES); 705 } 706 707 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 708 709 return 0; 710 711fail: ipw_release(sc); 712 return error; 713} 714 715static void 716ipw_release(struct ipw_softc *sc) 717{ 718 struct ipw_soft_buf *sbuf; 719 int i; 720 721 if (sc->parent_dmat != NULL) { 722 bus_dma_tag_destroy(sc->parent_dmat); 723 } 724 725 if (sc->tbd_dmat != NULL) { 726 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map); 727 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map); 728 bus_dma_tag_destroy(sc->tbd_dmat); 729 } 730 731 if (sc->rbd_dmat != NULL) { 732 if (sc->rbd_list != NULL) { 733 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map); 734 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list, 735 sc->rbd_map); 736 } 737 bus_dma_tag_destroy(sc->rbd_dmat); 738 } 739 740 if (sc->status_dmat != NULL) { 741 if (sc->status_list != NULL) { 742 bus_dmamap_unload(sc->status_dmat, sc->status_map); 743 bus_dmamem_free(sc->status_dmat, sc->status_list, 744 sc->status_map); 745 } 746 bus_dma_tag_destroy(sc->status_dmat); 747 } 748 749 for (i = 0; i < IPW_NTBD; i++) 750 ipw_release_sbd(sc, &sc->stbd_list[i]); 751 752 if (sc->cmd_dmat != NULL) { 753 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map); 754 bus_dma_tag_destroy(sc->cmd_dmat); 755 } 756 757 if (sc->hdr_dmat != NULL) { 758 for (i = 0; i < IPW_NDATA; i++) 759 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map); 760 bus_dma_tag_destroy(sc->hdr_dmat); 761 } 762 763 if (sc->txbuf_dmat != NULL) { 764 for (i = 0; i < IPW_NDATA; i++) { 765 bus_dmamap_destroy(sc->txbuf_dmat, 766 sc->tx_sbuf_list[i].map); 767 } 768 bus_dma_tag_destroy(sc->txbuf_dmat); 769 } 770 771 if (sc->rxbuf_dmat != NULL) { 772 for (i = 0; i < IPW_NRBD; i++) { 773 sbuf = &sc->rx_sbuf_list[i]; 774 if (sbuf->m != NULL) { 775 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, 776 BUS_DMASYNC_POSTREAD); 777 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 778 m_freem(sbuf->m); 779 } 780 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map); 781 } 782 bus_dma_tag_destroy(sc->rxbuf_dmat); 783 } 784} 785 786static int 787ipw_shutdown(device_t dev) 788{ 789 struct ipw_softc *sc = device_get_softc(dev); 790 791 ipw_stop(sc); 792 793 return 0; 794} 795 796static int 797ipw_suspend(device_t dev) 798{ 799 struct ipw_softc *sc = device_get_softc(dev); 800 struct ieee80211com *ic = &sc->sc_ic; 801 802 ieee80211_suspend_all(ic); 803 return 0; 804} 805 806static int 807ipw_resume(device_t dev) 808{ 809 struct ipw_softc *sc = device_get_softc(dev); 810 struct ieee80211com *ic = &sc->sc_ic; 811 812 pci_write_config(dev, 0x41, 0, 1); 813 814 ieee80211_resume_all(ic); 815 return 0; 816} 817 818static int 819ipw_cvtrate(int ipwrate) 820{ 821 switch (ipwrate) { 822 case IPW_RATE_DS1: return 2; 823 case IPW_RATE_DS2: return 4; 824 case IPW_RATE_DS5: return 11; 825 case IPW_RATE_DS11: return 22; 826 } 827 return 0; 828} 829 830/* 831 * The firmware automatically adapts the transmit speed. We report its current 832 * value here. 833 */ 834static void 835ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 836{ 837 struct ieee80211vap *vap = ifp->if_softc; 838 struct ieee80211com *ic = vap->iv_ic; 839 struct ipw_softc *sc = ic->ic_softc; 840 841 /* read current transmission rate from adapter */ 842 vap->iv_bss->ni_txrate = ipw_cvtrate( 843 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf); 844 ieee80211_media_status(ifp, imr); 845} 846 847static int 848ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 849{ 850 struct ipw_vap *ivp = IPW_VAP(vap); 851 struct ieee80211com *ic = vap->iv_ic; 852 struct ipw_softc *sc = ic->ic_softc; 853 enum ieee80211_state ostate; 854 855 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 856 ieee80211_state_name[vap->iv_state], 857 ieee80211_state_name[nstate], sc->flags)); 858 859 ostate = vap->iv_state; 860 IEEE80211_UNLOCK(ic); 861 862 switch (nstate) { 863 case IEEE80211_S_RUN: 864 if (ic->ic_opmode == IEEE80211_M_IBSS) { 865 /* 866 * XXX when joining an ibss network we are called 867 * with a SCAN -> RUN transition on scan complete. 868 * Use that to call ipw_assoc. On completing the 869 * join we are then called again with an AUTH -> RUN 870 * transition and we want to do nothing. This is 871 * all totally bogus and needs to be redone. 872 */ 873 if (ostate == IEEE80211_S_SCAN) 874 ipw_assoc(ic, vap); 875 } 876 break; 877 878 case IEEE80211_S_INIT: 879 if (sc->flags & IPW_FLAG_ASSOCIATED) 880 ipw_disassoc(ic, vap); 881 break; 882 883 case IEEE80211_S_AUTH: 884 /* 885 * Move to ASSOC state after the ipw_assoc() call. Firmware 886 * takes care of authentication, after the call we'll receive 887 * only an assoc response which would otherwise be discared 888 * if we are still in AUTH state. 889 */ 890 nstate = IEEE80211_S_ASSOC; 891 ipw_assoc(ic, vap); 892 break; 893 894 case IEEE80211_S_ASSOC: 895 /* 896 * If we are not transitioning from AUTH then resend the 897 * association request. 898 */ 899 if (ostate != IEEE80211_S_AUTH) 900 ipw_assoc(ic, vap); 901 break; 902 903 default: 904 break; 905 } 906 IEEE80211_LOCK(ic); 907 return ivp->newstate(vap, nstate, arg); 908} 909 910/* 911 * Read 16 bits at address 'addr' from the serial EEPROM. 912 */ 913static uint16_t 914ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr) 915{ 916 uint32_t tmp; 917 uint16_t val; 918 int n; 919 920 /* clock C once before the first command */ 921 IPW_EEPROM_CTL(sc, 0); 922 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 923 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 924 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 925 926 /* write start bit (1) */ 927 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 928 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 929 930 /* write READ opcode (10) */ 931 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D); 932 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C); 933 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 934 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 935 936 /* write address A7-A0 */ 937 for (n = 7; n >= 0; n--) { 938 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 939 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D)); 940 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | 941 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C); 942 } 943 944 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 945 946 /* read data Q15-Q0 */ 947 val = 0; 948 for (n = 15; n >= 0; n--) { 949 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C); 950 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 951 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL); 952 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n; 953 } 954 955 IPW_EEPROM_CTL(sc, 0); 956 957 /* clear Chip Select and clock C */ 958 IPW_EEPROM_CTL(sc, IPW_EEPROM_S); 959 IPW_EEPROM_CTL(sc, 0); 960 IPW_EEPROM_CTL(sc, IPW_EEPROM_C); 961 962 return le16toh(val); 963} 964 965static uint16_t 966ipw_read_chanmask(struct ipw_softc *sc) 967{ 968 uint16_t val; 969 970 /* set supported .11b channels (read from EEPROM) */ 971 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0) 972 val = 0x7ff; /* default to channels 1-11 */ 973 val <<= 1; 974 975 return (val); 976} 977 978static void 979ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 980{ 981 struct ipw_cmd *cmd; 982 983 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 984 985 cmd = mtod(sbuf->m, struct ipw_cmd *); 986 987 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n", 988 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type), 989 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len), 990 le32toh(cmd->status))); 991 992 sc->flags &= ~IPW_FLAG_BUSY; 993 wakeup(sc); 994} 995 996static void 997ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf) 998{ 999#define IEEESTATE(vap) ieee80211_state_name[vap->iv_state] 1000 struct ieee80211com *ic = &sc->sc_ic; 1001 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1002 uint32_t state; 1003 1004 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1005 1006 state = le32toh(*mtod(sbuf->m, uint32_t *)); 1007 1008 switch (state) { 1009 case IPW_STATE_ASSOCIATED: 1010 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n", 1011 IEEESTATE(vap), sc->flags)); 1012 /* XXX suppress state change in case the fw auto-associates */ 1013 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) { 1014 DPRINTF(("Unexpected association (%s, flags 0x%x)\n", 1015 IEEESTATE(vap), sc->flags)); 1016 break; 1017 } 1018 sc->flags &= ~IPW_FLAG_ASSOCIATING; 1019 sc->flags |= IPW_FLAG_ASSOCIATED; 1020 break; 1021 1022 case IPW_STATE_SCANNING: 1023 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n", 1024 IEEESTATE(vap), sc->flags)); 1025 /* 1026 * NB: Check driver state for association on assoc 1027 * loss as the firmware will immediately start to 1028 * scan and we would treat it as a beacon miss if 1029 * we checked the 802.11 layer state. 1030 */ 1031 if (sc->flags & IPW_FLAG_ASSOCIATED) { 1032 IPW_UNLOCK(sc); 1033 /* XXX probably need to issue disassoc to fw */ 1034 ieee80211_beacon_miss(ic); 1035 IPW_LOCK(sc); 1036 } 1037 break; 1038 1039 case IPW_STATE_SCAN_COMPLETE: 1040 /* 1041 * XXX For some reason scan requests generate scan 1042 * started + scan done events before any traffic is 1043 * received (e.g. probe response frames). We work 1044 * around this by marking the HACK flag and skipping 1045 * the first scan complete event. 1046 */ 1047 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n", 1048 IEEESTATE(vap), sc->flags)); 1049 if (sc->flags & IPW_FLAG_HACK) { 1050 sc->flags &= ~IPW_FLAG_HACK; 1051 break; 1052 } 1053 if (sc->flags & IPW_FLAG_SCANNING) { 1054 IPW_UNLOCK(sc); 1055 ieee80211_scan_done(vap); 1056 IPW_LOCK(sc); 1057 sc->flags &= ~IPW_FLAG_SCANNING; 1058 sc->sc_scan_timer = 0; 1059 } 1060 break; 1061 1062 case IPW_STATE_ASSOCIATION_LOST: 1063 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n", 1064 IEEESTATE(vap), sc->flags)); 1065 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1066 if (vap->iv_state == IEEE80211_S_RUN) { 1067 IPW_UNLOCK(sc); 1068 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1069 IPW_LOCK(sc); 1070 } 1071 break; 1072 1073 case IPW_STATE_DISABLED: 1074 /* XXX? is this right? */ 1075 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING | 1076 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED); 1077 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n", 1078 IEEESTATE(vap), sc->flags)); 1079 break; 1080 1081 case IPW_STATE_RADIO_DISABLED: 1082 device_printf(sc->sc_dev, "radio turned off\n"); 1083 ieee80211_notify_radio(ic, 0); 1084 ipw_stop_locked(sc); 1085 /* XXX start polling thread to detect radio on */ 1086 break; 1087 1088 default: 1089 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n", 1090 __func__, state, IEEESTATE(vap), sc->flags)); 1091 break; 1092 } 1093#undef IEEESTATE 1094} 1095 1096/* 1097 * Set driver state for current channel. 1098 */ 1099static void 1100ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan) 1101{ 1102 struct ieee80211com *ic = &sc->sc_ic; 1103 1104 ic->ic_curchan = chan; 1105 ieee80211_radiotap_chan_change(ic); 1106} 1107 1108/* 1109 * XXX: Hack to set the current channel to the value advertised in beacons or 1110 * probe responses. Only used during AP detection. 1111 */ 1112static void 1113ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m) 1114{ 1115 struct ieee80211com *ic = &sc->sc_ic; 1116 struct ieee80211_channel *c; 1117 struct ieee80211_frame *wh; 1118 uint8_t subtype; 1119 uint8_t *frm, *efrm; 1120 1121 wh = mtod(m, struct ieee80211_frame *); 1122 1123 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1124 return; 1125 1126 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1127 1128 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1129 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1130 return; 1131 1132 /* XXX use ieee80211_parse_beacon */ 1133 frm = (uint8_t *)(wh + 1); 1134 efrm = mtod(m, uint8_t *) + m->m_len; 1135 1136 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1137 while (frm < efrm) { 1138 if (*frm == IEEE80211_ELEMID_DSPARMS) 1139#if IEEE80211_CHAN_MAX < 255 1140 if (frm[2] <= IEEE80211_CHAN_MAX) 1141#endif 1142 { 1143 DPRINTF(("Fixing channel to %d\n", frm[2])); 1144 c = ieee80211_find_channel(ic, 1145 ieee80211_ieee2mhz(frm[2], 0), 1146 IEEE80211_CHAN_B); 1147 if (c == NULL) 1148 c = &ic->ic_channels[0]; 1149 ipw_setcurchan(sc, c); 1150 } 1151 1152 frm += frm[1] + 2; 1153 } 1154} 1155 1156static void 1157ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status, 1158 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf) 1159{ 1160 struct ieee80211com *ic = &sc->sc_ic; 1161 struct mbuf *mnew, *m; 1162 struct ieee80211_node *ni; 1163 bus_addr_t physaddr; 1164 int error; 1165 int8_t rssi, nf; 1166 1167 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len), 1168 status->rssi)); 1169 1170 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) || 1171 le32toh(status->len) > MCLBYTES) 1172 return; 1173 1174 /* 1175 * Try to allocate a new mbuf for this ring element and load it before 1176 * processing the current mbuf. If the ring element cannot be loaded, 1177 * drop the received packet and reuse the old mbuf. In the unlikely 1178 * case that the old mbuf can't be reloaded either, explicitly panic. 1179 */ 1180 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1181 if (mnew == NULL) { 1182 counter_u64_add(ic->ic_ierrors, 1); 1183 return; 1184 } 1185 1186 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD); 1187 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map); 1188 1189 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *), 1190 MCLBYTES, ipw_dma_map_addr, &physaddr, 0); 1191 if (error != 0) { 1192 m_freem(mnew); 1193 1194 /* try to reload the old mbuf */ 1195 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, 1196 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr, 1197 &physaddr, 0); 1198 if (error != 0) { 1199 /* very unlikely that it will fail... */ 1200 panic("%s: could not load old rx mbuf", 1201 device_get_name(sc->sc_dev)); 1202 } 1203 counter_u64_add(ic->ic_ierrors, 1); 1204 return; 1205 } 1206 1207 /* 1208 * New mbuf successfully loaded, update Rx ring and continue 1209 * processing. 1210 */ 1211 m = sbuf->m; 1212 sbuf->m = mnew; 1213 sbd->bd->physaddr = htole32(physaddr); 1214 m->m_pkthdr.len = m->m_len = le32toh(status->len); 1215 1216 rssi = status->rssi + IPW_RSSI_TO_DBM; 1217 nf = -95; 1218 if (ieee80211_radiotap_active(ic)) { 1219 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap; 1220 1221 tap->wr_flags = 0; 1222 tap->wr_antsignal = rssi; 1223 tap->wr_antnoise = nf; 1224 } 1225 1226 if (sc->flags & IPW_FLAG_SCANNING) 1227 ipw_fix_channel(sc, m); 1228 1229 IPW_UNLOCK(sc); 1230 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1231 if (ni != NULL) { 1232 (void) ieee80211_input(ni, m, rssi - nf, nf); 1233 ieee80211_free_node(ni); 1234 } else 1235 (void) ieee80211_input_all(ic, m, rssi - nf, nf); 1236 IPW_LOCK(sc); 1237 1238 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1239} 1240 1241static void 1242ipw_rx_intr(struct ipw_softc *sc) 1243{ 1244 struct ipw_status *status; 1245 struct ipw_soft_bd *sbd; 1246 struct ipw_soft_buf *sbuf; 1247 uint32_t r, i; 1248 1249 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1250 return; 1251 1252 r = CSR_READ_4(sc, IPW_CSR_RX_READ); 1253 1254 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD); 1255 1256 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) { 1257 status = &sc->status_list[i]; 1258 sbd = &sc->srbd_list[i]; 1259 sbuf = sbd->priv; 1260 1261 switch (le16toh(status->code) & 0xf) { 1262 case IPW_STATUS_CODE_COMMAND: 1263 ipw_rx_cmd_intr(sc, sbuf); 1264 break; 1265 1266 case IPW_STATUS_CODE_NEWSTATE: 1267 ipw_rx_newstate_intr(sc, sbuf); 1268 break; 1269 1270 case IPW_STATUS_CODE_DATA_802_3: 1271 case IPW_STATUS_CODE_DATA_802_11: 1272 ipw_rx_data_intr(sc, status, sbd, sbuf); 1273 break; 1274 1275 case IPW_STATUS_CODE_NOTIFICATION: 1276 DPRINTFN(2, ("notification status, len %u flags 0x%x\n", 1277 le32toh(status->len), status->flags)); 1278 /* XXX maybe drive state machine AUTH->ASSOC? */ 1279 break; 1280 1281 default: 1282 device_printf(sc->sc_dev, "unexpected status code %u\n", 1283 le16toh(status->code)); 1284 } 1285 1286 /* firmware was killed, stop processing received frames */ 1287 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1288 return; 1289 1290 sbd->bd->flags = 0; 1291 } 1292 1293 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE); 1294 1295 /* kick the firmware */ 1296 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1; 1297 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 1298} 1299 1300static void 1301ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd) 1302{ 1303 struct ipw_soft_hdr *shdr; 1304 struct ipw_soft_buf *sbuf; 1305 1306 switch (sbd->type) { 1307 case IPW_SBD_TYPE_COMMAND: 1308 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, 1309 BUS_DMASYNC_POSTWRITE); 1310 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map); 1311 break; 1312 1313 case IPW_SBD_TYPE_HEADER: 1314 shdr = sbd->priv; 1315 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE); 1316 bus_dmamap_unload(sc->hdr_dmat, shdr->map); 1317 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next); 1318 break; 1319 1320 case IPW_SBD_TYPE_DATA: 1321 sbuf = sbd->priv; 1322 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, 1323 BUS_DMASYNC_POSTWRITE); 1324 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1325 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next); 1326 1327 if (sbuf->m->m_flags & M_TXCB) 1328 ieee80211_process_callback(sbuf->ni, sbuf->m, 0/*XXX*/); 1329 m_freem(sbuf->m); 1330 ieee80211_free_node(sbuf->ni); 1331 1332 sc->sc_tx_timer = 0; 1333 break; 1334 } 1335 1336 sbd->type = IPW_SBD_TYPE_NOASSOC; 1337} 1338 1339static void 1340ipw_tx_intr(struct ipw_softc *sc) 1341{ 1342 struct ipw_soft_bd *sbd; 1343 uint32_t r, i; 1344 1345 if (!(sc->flags & IPW_FLAG_FW_INITED)) 1346 return; 1347 1348 r = CSR_READ_4(sc, IPW_CSR_TX_READ); 1349 1350 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) { 1351 sbd = &sc->stbd_list[i]; 1352 ipw_release_sbd(sc, sbd); 1353 sc->txfree++; 1354 } 1355 1356 /* remember what the firmware has processed */ 1357 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1; 1358 1359 ipw_start(sc); 1360} 1361 1362static void 1363ipw_fatal_error_intr(struct ipw_softc *sc) 1364{ 1365 struct ieee80211com *ic = &sc->sc_ic; 1366 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1367 1368 device_printf(sc->sc_dev, "firmware error\n"); 1369 if (vap != NULL) { 1370 IPW_UNLOCK(sc); 1371 ieee80211_cancel_scan(vap); 1372 IPW_LOCK(sc); 1373 } 1374 ieee80211_runtask(ic, &sc->sc_init_task); 1375} 1376 1377static void 1378ipw_intr(void *arg) 1379{ 1380 struct ipw_softc *sc = arg; 1381 uint32_t r; 1382 1383 IPW_LOCK(sc); 1384 1385 r = CSR_READ_4(sc, IPW_CSR_INTR); 1386 if (r == 0 || r == 0xffffffff) 1387 goto done; 1388 1389 /* disable interrupts */ 1390 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1391 1392 /* acknowledge all interrupts */ 1393 CSR_WRITE_4(sc, IPW_CSR_INTR, r); 1394 1395 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) { 1396 ipw_fatal_error_intr(sc); 1397 goto done; 1398 } 1399 1400 if (r & IPW_INTR_FW_INIT_DONE) 1401 wakeup(sc); 1402 1403 if (r & IPW_INTR_RX_TRANSFER) 1404 ipw_rx_intr(sc); 1405 1406 if (r & IPW_INTR_TX_TRANSFER) 1407 ipw_tx_intr(sc); 1408 1409 /* re-enable interrupts */ 1410 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1411done: 1412 IPW_UNLOCK(sc); 1413} 1414 1415static void 1416ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1417{ 1418 if (error != 0) 1419 return; 1420 1421 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 1422 1423 *(bus_addr_t *)arg = segs[0].ds_addr; 1424} 1425 1426static const char * 1427ipw_cmdname(int cmd) 1428{ 1429 static const struct { 1430 int cmd; 1431 const char *name; 1432 } cmds[] = { 1433 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" }, 1434 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" }, 1435 { IPW_CMD_DISABLE, "DISABLE" }, 1436 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" }, 1437 { IPW_CMD_ENABLE, "ENABLE" }, 1438 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" }, 1439 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" }, 1440 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" }, 1441 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" }, 1442 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" }, 1443 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" }, 1444 { IPW_CMD_SET_ESSID, "SET_ESSID" }, 1445 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" }, 1446 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" }, 1447 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" }, 1448 { IPW_CMD_SET_MODE, "SET_MODE" }, 1449 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" }, 1450 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" }, 1451 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" }, 1452 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" }, 1453 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" }, 1454 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" }, 1455 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" }, 1456 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" }, 1457 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" }, 1458 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" }, 1459 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" }, 1460 1461 }; 1462 static char buf[12]; 1463 int i; 1464 1465 for (i = 0; i < nitems(cmds); i++) 1466 if (cmds[i].cmd == cmd) 1467 return cmds[i].name; 1468 snprintf(buf, sizeof(buf), "%u", cmd); 1469 return buf; 1470} 1471 1472/* 1473 * Send a command to the firmware and wait for the acknowledgement. 1474 */ 1475static int 1476ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len) 1477{ 1478 struct ipw_soft_bd *sbd; 1479 bus_addr_t physaddr; 1480 int error; 1481 1482 IPW_LOCK_ASSERT(sc); 1483 1484 if (sc->flags & IPW_FLAG_BUSY) { 1485 device_printf(sc->sc_dev, "%s: %s not sent, busy\n", 1486 __func__, ipw_cmdname(type)); 1487 return EAGAIN; 1488 } 1489 sc->flags |= IPW_FLAG_BUSY; 1490 1491 sbd = &sc->stbd_list[sc->txcur]; 1492 1493 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd, 1494 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0); 1495 if (error != 0) { 1496 device_printf(sc->sc_dev, "could not map command DMA memory\n"); 1497 sc->flags &= ~IPW_FLAG_BUSY; 1498 return error; 1499 } 1500 1501 sc->cmd.type = htole32(type); 1502 sc->cmd.subtype = 0; 1503 sc->cmd.len = htole32(len); 1504 sc->cmd.seq = 0; 1505 memcpy(sc->cmd.data, data, len); 1506 1507 sbd->type = IPW_SBD_TYPE_COMMAND; 1508 sbd->bd->physaddr = htole32(physaddr); 1509 sbd->bd->len = htole32(sizeof (struct ipw_cmd)); 1510 sbd->bd->nfrag = 1; 1511 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND | 1512 IPW_BD_FLAG_TX_LAST_FRAGMENT; 1513 1514 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE); 1515 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1516 1517#ifdef IPW_DEBUG 1518 if (ipw_debug >= 4) { 1519 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type, 1520 0, 0, len); 1521 /* Print the data buffer in the higher debug level */ 1522 if (ipw_debug >= 9 && len > 0) { 1523 printf(" data: 0x"); 1524 for (int i = 1; i <= len; i++) 1525 printf("%1D", (u_char *)data + len - i, ""); 1526 } 1527 printf("\n"); 1528 } 1529#endif 1530 1531 /* kick firmware */ 1532 sc->txfree--; 1533 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1534 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1535 1536 /* wait at most one second for command to complete */ 1537 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz); 1538 if (error != 0) { 1539 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n", 1540 __func__, ipw_cmdname(type), error); 1541 sc->flags &= ~IPW_FLAG_BUSY; 1542 return (error); 1543 } 1544 return (0); 1545} 1546 1547static int 1548ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1549{ 1550 struct ieee80211com *ic = &sc->sc_ic; 1551 struct ieee80211vap *vap = ni->ni_vap; 1552 struct ieee80211_frame *wh; 1553 struct ipw_soft_bd *sbd; 1554 struct ipw_soft_hdr *shdr; 1555 struct ipw_soft_buf *sbuf; 1556 struct ieee80211_key *k; 1557 struct mbuf *mnew; 1558 bus_dma_segment_t segs[IPW_MAX_NSEG]; 1559 bus_addr_t physaddr; 1560 int nsegs, error, i; 1561 1562 wh = mtod(m0, struct ieee80211_frame *); 1563 1564 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1565 k = ieee80211_crypto_encap(ni, m0); 1566 if (k == NULL) { 1567 m_freem(m0); 1568 return ENOBUFS; 1569 } 1570 /* packet header may have moved, reset our local pointer */ 1571 wh = mtod(m0, struct ieee80211_frame *); 1572 } 1573 1574 if (ieee80211_radiotap_active_vap(vap)) { 1575 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap; 1576 1577 tap->wt_flags = 0; 1578 1579 ieee80211_radiotap_tx(vap, m0); 1580 } 1581 1582 shdr = SLIST_FIRST(&sc->free_shdr); 1583 sbuf = SLIST_FIRST(&sc->free_sbuf); 1584 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool")); 1585 1586 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND); 1587 shdr->hdr.subtype = 0; 1588 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0; 1589 shdr->hdr.encrypt = 0; 1590 shdr->hdr.keyidx = 0; 1591 shdr->hdr.keysz = 0; 1592 shdr->hdr.fragmentsz = 0; 1593 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2); 1594 if (ic->ic_opmode == IEEE80211_M_STA) 1595 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3); 1596 else 1597 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1); 1598 1599 /* trim IEEE802.11 header */ 1600 m_adj(m0, sizeof (struct ieee80211_frame)); 1601 1602 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs, 1603 &nsegs, 0); 1604 if (error != 0 && error != EFBIG) { 1605 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1606 error); 1607 m_freem(m0); 1608 return error; 1609 } 1610 if (error != 0) { 1611 mnew = m_defrag(m0, M_NOWAIT); 1612 if (mnew == NULL) { 1613 device_printf(sc->sc_dev, 1614 "could not defragment mbuf\n"); 1615 m_freem(m0); 1616 return ENOBUFS; 1617 } 1618 m0 = mnew; 1619 1620 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, 1621 segs, &nsegs, 0); 1622 if (error != 0) { 1623 device_printf(sc->sc_dev, 1624 "could not map mbuf (error %d)\n", error); 1625 m_freem(m0); 1626 return error; 1627 } 1628 } 1629 1630 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr, 1631 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0); 1632 if (error != 0) { 1633 device_printf(sc->sc_dev, "could not map header DMA memory\n"); 1634 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map); 1635 m_freem(m0); 1636 return error; 1637 } 1638 1639 SLIST_REMOVE_HEAD(&sc->free_sbuf, next); 1640 SLIST_REMOVE_HEAD(&sc->free_shdr, next); 1641 1642 sbd = &sc->stbd_list[sc->txcur]; 1643 sbd->type = IPW_SBD_TYPE_HEADER; 1644 sbd->priv = shdr; 1645 sbd->bd->physaddr = htole32(physaddr); 1646 sbd->bd->len = htole32(sizeof (struct ipw_hdr)); 1647 sbd->bd->nfrag = 1 + nsegs; 1648 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 | 1649 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1650 1651 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n", 1652 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted, 1653 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr, 1654 ":")); 1655 1656 sc->txfree--; 1657 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1658 1659 sbuf->m = m0; 1660 sbuf->ni = ni; 1661 1662 for (i = 0; i < nsegs; i++) { 1663 sbd = &sc->stbd_list[sc->txcur]; 1664 1665 sbd->bd->physaddr = htole32(segs[i].ds_addr); 1666 sbd->bd->len = htole32(segs[i].ds_len); 1667 sbd->bd->nfrag = 0; 1668 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3; 1669 if (i == nsegs - 1) { 1670 sbd->type = IPW_SBD_TYPE_DATA; 1671 sbd->priv = sbuf; 1672 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT; 1673 } else { 1674 sbd->type = IPW_SBD_TYPE_NOASSOC; 1675 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT; 1676 } 1677 1678 DPRINTFN(5, ("sending fragment (%d)\n", i)); 1679 1680 sc->txfree--; 1681 sc->txcur = (sc->txcur + 1) % IPW_NTBD; 1682 } 1683 1684 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE); 1685 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE); 1686 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE); 1687 1688 /* kick firmware */ 1689 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 1690 1691 return 0; 1692} 1693 1694static int 1695ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1696 const struct ieee80211_bpf_params *params) 1697{ 1698 /* no support; just discard */ 1699 m_freem(m); 1700 ieee80211_free_node(ni); 1701 return 0; 1702} 1703 1704static int 1705ipw_transmit(struct ieee80211com *ic, struct mbuf *m) 1706{ 1707 struct ipw_softc *sc = ic->ic_softc; 1708 int error; 1709 1710 IPW_LOCK(sc); 1711 if ((sc->flags & IPW_FLAG_RUNNING) == 0) { 1712 IPW_UNLOCK(sc); 1713 return (ENXIO); 1714 } 1715 error = mbufq_enqueue(&sc->sc_snd, m); 1716 if (error) { 1717 IPW_UNLOCK(sc); 1718 return (error); 1719 } 1720 ipw_start(sc); 1721 IPW_UNLOCK(sc); 1722 return (0); 1723} 1724 1725static void 1726ipw_start(struct ipw_softc *sc) 1727{ 1728 struct ieee80211_node *ni; 1729 struct mbuf *m; 1730 1731 IPW_LOCK_ASSERT(sc); 1732 1733 while (sc->txfree < 1 + IPW_MAX_NSEG && 1734 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1735 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1736 if (ipw_tx_start(sc, m, ni) != 0) { 1737 if_inc_counter(ni->ni_vap->iv_ifp, 1738 IFCOUNTER_OERRORS, 1); 1739 ieee80211_free_node(ni); 1740 break; 1741 } 1742 /* start watchdog timer */ 1743 sc->sc_tx_timer = 5; 1744 } 1745} 1746 1747static void 1748ipw_watchdog(void *arg) 1749{ 1750 struct ipw_softc *sc = arg; 1751 struct ieee80211com *ic = &sc->sc_ic; 1752 1753 IPW_LOCK_ASSERT(sc); 1754 1755 if (sc->sc_tx_timer > 0) { 1756 if (--sc->sc_tx_timer == 0) { 1757 device_printf(sc->sc_dev, "device timeout\n"); 1758 counter_u64_add(ic->ic_oerrors, 1); 1759 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task); 1760 } 1761 } 1762 if (sc->sc_scan_timer > 0) { 1763 if (--sc->sc_scan_timer == 0) { 1764 DPRINTFN(3, ("Scan timeout\n")); 1765 /* End the scan */ 1766 if (sc->flags & IPW_FLAG_SCANNING) { 1767 IPW_UNLOCK(sc); 1768 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps)); 1769 IPW_LOCK(sc); 1770 sc->flags &= ~IPW_FLAG_SCANNING; 1771 } 1772 } 1773 } 1774 if (sc->flags & IPW_FLAG_RUNNING) 1775 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 1776} 1777 1778static void 1779ipw_parent(struct ieee80211com *ic) 1780{ 1781 struct ipw_softc *sc = ic->ic_softc; 1782 int startall = 0; 1783 1784 IPW_LOCK(sc); 1785 if (ic->ic_nrunning > 0) { 1786 if (!(sc->flags & IPW_FLAG_RUNNING)) { 1787 ipw_init_locked(sc); 1788 startall = 1; 1789 } 1790 } else if (sc->flags & IPW_FLAG_RUNNING) 1791 ipw_stop_locked(sc); 1792 IPW_UNLOCK(sc); 1793 if (startall) 1794 ieee80211_start_all(ic); 1795} 1796 1797static void 1798ipw_stop_master(struct ipw_softc *sc) 1799{ 1800 uint32_t tmp; 1801 int ntries; 1802 1803 /* disable interrupts */ 1804 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0); 1805 1806 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER); 1807 for (ntries = 0; ntries < 50; ntries++) { 1808 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED) 1809 break; 1810 DELAY(10); 1811 } 1812 if (ntries == 50) 1813 device_printf(sc->sc_dev, "timeout waiting for master\n"); 1814 1815 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1816 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET); 1817 1818 /* Clear all flags except the following */ 1819 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH; 1820} 1821 1822static int 1823ipw_reset(struct ipw_softc *sc) 1824{ 1825 uint32_t tmp; 1826 int ntries; 1827 1828 ipw_stop_master(sc); 1829 1830 /* move adapter to D0 state */ 1831 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1832 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1833 1834 /* wait for clock stabilization */ 1835 for (ntries = 0; ntries < 1000; ntries++) { 1836 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY) 1837 break; 1838 DELAY(200); 1839 } 1840 if (ntries == 1000) 1841 return EIO; 1842 1843 tmp = CSR_READ_4(sc, IPW_CSR_RST); 1844 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET); 1845 1846 DELAY(10); 1847 1848 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1849 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT); 1850 1851 return 0; 1852} 1853 1854static int 1855ipw_waitfordisable(struct ipw_softc *sc, int waitfor) 1856{ 1857 int ms = hz < 1000 ? 1 : hz/10; 1858 int i, error; 1859 1860 for (i = 0; i < 100; i++) { 1861 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor) 1862 return 0; 1863 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms); 1864 if (error == 0 || error != EWOULDBLOCK) 1865 return 0; 1866 } 1867 DPRINTF(("%s: timeout waiting for %s\n", 1868 __func__, waitfor ? "disable" : "enable")); 1869 return ETIMEDOUT; 1870} 1871 1872static int 1873ipw_enable(struct ipw_softc *sc) 1874{ 1875 int error; 1876 1877 if ((sc->flags & IPW_FLAG_ENABLED) == 0) { 1878 DPRINTF(("Enable adapter\n")); 1879 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0); 1880 if (error != 0) 1881 return error; 1882 error = ipw_waitfordisable(sc, 0); 1883 if (error != 0) 1884 return error; 1885 sc->flags |= IPW_FLAG_ENABLED; 1886 } 1887 return 0; 1888} 1889 1890static int 1891ipw_disable(struct ipw_softc *sc) 1892{ 1893 int error; 1894 1895 if (sc->flags & IPW_FLAG_ENABLED) { 1896 DPRINTF(("Disable adapter\n")); 1897 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0); 1898 if (error != 0) 1899 return error; 1900 error = ipw_waitfordisable(sc, 1); 1901 if (error != 0) 1902 return error; 1903 sc->flags &= ~IPW_FLAG_ENABLED; 1904 } 1905 return 0; 1906} 1907 1908/* 1909 * Upload the microcode to the device. 1910 */ 1911static int 1912ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size) 1913{ 1914 int ntries; 1915 1916 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1917 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1918 1919 MEM_WRITE_2(sc, 0x220000, 0x0703); 1920 MEM_WRITE_2(sc, 0x220000, 0x0707); 1921 1922 MEM_WRITE_1(sc, 0x210014, 0x72); 1923 MEM_WRITE_1(sc, 0x210014, 0x72); 1924 1925 MEM_WRITE_1(sc, 0x210000, 0x40); 1926 MEM_WRITE_1(sc, 0x210000, 0x00); 1927 MEM_WRITE_1(sc, 0x210000, 0x40); 1928 1929 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size); 1930 1931 MEM_WRITE_1(sc, 0x210000, 0x00); 1932 MEM_WRITE_1(sc, 0x210000, 0x00); 1933 MEM_WRITE_1(sc, 0x210000, 0x80); 1934 1935 MEM_WRITE_2(sc, 0x220000, 0x0703); 1936 MEM_WRITE_2(sc, 0x220000, 0x0707); 1937 1938 MEM_WRITE_1(sc, 0x210014, 0x72); 1939 MEM_WRITE_1(sc, 0x210014, 0x72); 1940 1941 MEM_WRITE_1(sc, 0x210000, 0x00); 1942 MEM_WRITE_1(sc, 0x210000, 0x80); 1943 1944 for (ntries = 0; ntries < 10; ntries++) { 1945 if (MEM_READ_1(sc, 0x210000) & 1) 1946 break; 1947 DELAY(10); 1948 } 1949 if (ntries == 10) { 1950 device_printf(sc->sc_dev, 1951 "timeout waiting for ucode to initialize\n"); 1952 return EIO; 1953 } 1954 1955 MEM_WRITE_4(sc, 0x3000e0, 0); 1956 1957 return 0; 1958} 1959 1960/* set of macros to handle unaligned little endian data in firmware image */ 1961#define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1962#define GETLE16(p) ((p)[0] | (p)[1] << 8) 1963static int 1964ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size) 1965{ 1966 const uint8_t *p, *end; 1967 uint32_t tmp, dst; 1968 uint16_t len; 1969 int error; 1970 1971 p = fw; 1972 end = fw + size; 1973 while (p < end) { 1974 dst = GETLE32(p); p += 4; 1975 len = GETLE16(p); p += 2; 1976 1977 ipw_write_mem_1(sc, dst, p, len); 1978 p += len; 1979 } 1980 1981 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK | 1982 IPW_IO_LED_OFF); 1983 1984 /* enable interrupts */ 1985 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK); 1986 1987 /* kick the firmware */ 1988 CSR_WRITE_4(sc, IPW_CSR_RST, 0); 1989 1990 tmp = CSR_READ_4(sc, IPW_CSR_CTL); 1991 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY); 1992 1993 /* wait at most one second for firmware initialization to complete */ 1994 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) { 1995 device_printf(sc->sc_dev, "timeout waiting for firmware " 1996 "initialization to complete\n"); 1997 return error; 1998 } 1999 2000 tmp = CSR_READ_4(sc, IPW_CSR_IO); 2001 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK | 2002 IPW_IO_GPIO3_MASK); 2003 2004 return 0; 2005} 2006 2007static int 2008ipw_setwepkeys(struct ipw_softc *sc) 2009{ 2010 struct ieee80211com *ic = &sc->sc_ic; 2011 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2012 struct ipw_wep_key wepkey; 2013 struct ieee80211_key *wk; 2014 int error, i; 2015 2016 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2017 wk = &vap->iv_nw_keys[i]; 2018 2019 if (wk->wk_cipher == NULL || 2020 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 2021 continue; 2022 2023 wepkey.idx = i; 2024 wepkey.len = wk->wk_keylen; 2025 memset(wepkey.key, 0, sizeof wepkey.key); 2026 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2027 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2028 wepkey.len)); 2029 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey, 2030 sizeof wepkey); 2031 if (error != 0) 2032 return error; 2033 } 2034 return 0; 2035} 2036 2037static int 2038ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen) 2039{ 2040 struct ipw_wpa_ie wpaie; 2041 2042 memset(&wpaie, 0, sizeof(wpaie)); 2043 wpaie.len = htole32(ielen); 2044 /* XXX verify length */ 2045 memcpy(&wpaie.ie, ie, ielen); 2046 DPRINTF(("Setting WPA IE\n")); 2047 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie)); 2048} 2049 2050static int 2051ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid) 2052{ 2053 static const uint8_t zerobssid[IEEE80211_ADDR_LEN]; 2054 2055 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) { 2056 DPRINTF(("Setting mandatory BSSID to null\n")); 2057 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0); 2058 } else { 2059 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":")); 2060 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, 2061 bssid, IEEE80211_ADDR_LEN); 2062 } 2063} 2064 2065static int 2066ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen) 2067{ 2068 if (ssidlen == 0) { 2069 /* 2070 * A bug in the firmware breaks the ``don't associate'' 2071 * bit in the scan options command. To compensate for 2072 * this install a bogus ssid when no ssid is specified 2073 * so the firmware won't try to associate. 2074 */ 2075 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n")); 2076 return ipw_cmd(sc, IPW_CMD_SET_ESSID, 2077 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27" 2078 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31" 2079 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b" 2080 "\x3c\x3d", IEEE80211_NWID_LEN); 2081 } else { 2082#ifdef IPW_DEBUG 2083 if (ipw_debug > 0) { 2084 printf("Setting ESSID to "); 2085 ieee80211_print_essid(ssid, ssidlen); 2086 printf("\n"); 2087 } 2088#endif 2089 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen); 2090 } 2091} 2092 2093static int 2094ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags) 2095{ 2096 struct ipw_scan_options opts; 2097 2098 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags)); 2099 opts.channels = htole32(chanmask); 2100 opts.flags = htole32(flags); 2101 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts)); 2102} 2103 2104static int 2105ipw_scan(struct ipw_softc *sc) 2106{ 2107 uint32_t params; 2108 int error; 2109 2110 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags)); 2111 2112 if (sc->flags & IPW_FLAG_SCANNING) 2113 return (EBUSY); 2114 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK; 2115 2116 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */ 2117 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE); 2118 if (error != 0) 2119 goto done; 2120 2121 /* 2122 * Setup null/bogus ssid so firmware doesn't use any previous 2123 * ssid to try and associate. This is because the ``don't 2124 * associate'' option bit is broken (sigh). 2125 */ 2126 error = ipw_setssid(sc, NULL, 0); 2127 if (error != 0) 2128 goto done; 2129 2130 /* 2131 * NB: the adapter may be disabled on association lost; 2132 * if so just re-enable it to kick off scanning. 2133 */ 2134 DPRINTF(("Starting scan\n")); 2135 sc->sc_scan_timer = 3; 2136 if (sc->flags & IPW_FLAG_ENABLED) { 2137 params = 0; /* XXX? */ 2138 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN, 2139 ¶ms, sizeof(params)); 2140 } else 2141 error = ipw_enable(sc); 2142done: 2143 if (error != 0) { 2144 DPRINTF(("Scan failed\n")); 2145 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK); 2146 } 2147 return (error); 2148} 2149 2150static int 2151ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan) 2152{ 2153 struct ieee80211com *ic = &sc->sc_ic; 2154 uint32_t data; 2155 int error; 2156 2157 data = htole32(ieee80211_chan2ieee(ic, chan)); 2158 DPRINTF(("Setting channel to %u\n", le32toh(data))); 2159 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data); 2160 if (error == 0) 2161 ipw_setcurchan(sc, chan); 2162 return error; 2163} 2164 2165static void 2166ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2167{ 2168 struct ipw_softc *sc = ic->ic_softc; 2169 struct ieee80211_node *ni = vap->iv_bss; 2170 struct ipw_security security; 2171 uint32_t data; 2172 int error; 2173 2174 IPW_LOCK(sc); 2175 error = ipw_disable(sc); 2176 if (error != 0) 2177 goto done; 2178 2179 memset(&security, 0, sizeof security); 2180 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ? 2181 IPW_AUTH_SHARED : IPW_AUTH_OPEN; 2182 security.ciphers = htole32(IPW_CIPHER_NONE); 2183 DPRINTF(("Setting authmode to %u\n", security.authmode)); 2184 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security, 2185 sizeof security); 2186 if (error != 0) 2187 goto done; 2188 2189 data = htole32(vap->iv_rtsthreshold); 2190 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2191 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2192 if (error != 0) 2193 goto done; 2194 2195 data = htole32(vap->iv_fragthreshold); 2196 DPRINTF(("Setting frag threshold to %u\n", le32toh(data))); 2197 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2198 if (error != 0) 2199 goto done; 2200 2201 if (vap->iv_flags & IEEE80211_F_PRIVACY) { 2202 error = ipw_setwepkeys(sc); 2203 if (error != 0) 2204 goto done; 2205 2206 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) { 2207 data = htole32(vap->iv_def_txkey); 2208 DPRINTF(("Setting wep tx key index to %u\n", 2209 le32toh(data))); 2210 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data, 2211 sizeof data); 2212 if (error != 0) 2213 goto done; 2214 } 2215 } 2216 2217 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0); 2218 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data))); 2219 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data); 2220 if (error != 0) 2221 goto done; 2222 2223 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen); 2224 if (error != 0) 2225 goto done; 2226 2227 error = ipw_setbssid(sc, ni->ni_bssid); 2228 if (error != 0) 2229 goto done; 2230 2231 if (vap->iv_appie_wpa != NULL) { 2232 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2233 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len); 2234 if (error != 0) 2235 goto done; 2236 } 2237 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2238 error = ipw_setchannel(sc, ni->ni_chan); 2239 if (error != 0) 2240 goto done; 2241 } 2242 2243 /* lock scan to ap's channel and enable associate */ 2244 error = ipw_setscanopts(sc, 2245 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0); 2246 if (error != 0) 2247 goto done; 2248 2249 error = ipw_enable(sc); /* finally, enable adapter */ 2250 if (error == 0) 2251 sc->flags |= IPW_FLAG_ASSOCIATING; 2252done: 2253 IPW_UNLOCK(sc); 2254} 2255 2256static void 2257ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap) 2258{ 2259 struct ieee80211_node *ni = vap->iv_bss; 2260 struct ipw_softc *sc = ic->ic_softc; 2261 2262 IPW_LOCK(sc); 2263 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":")); 2264 /* 2265 * NB: don't try to do this if ipw_stop_master has 2266 * shutdown the firmware and disabled interrupts. 2267 */ 2268 if (sc->flags & IPW_FLAG_FW_INITED) { 2269 sc->flags &= ~IPW_FLAG_ASSOCIATED; 2270 /* 2271 * NB: firmware currently ignores bssid parameter, but 2272 * supply it in case this changes (follow linux driver). 2273 */ 2274 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE, 2275 ni->ni_bssid, IEEE80211_ADDR_LEN); 2276 } 2277 IPW_UNLOCK(sc); 2278} 2279 2280/* 2281 * Handler for sc_init_task. This is a simple wrapper around ipw_init(). 2282 * It is called on firmware panics or on watchdog timeouts. 2283 */ 2284static void 2285ipw_init_task(void *context, int pending) 2286{ 2287 ipw_init(context); 2288} 2289 2290static void 2291ipw_init(void *priv) 2292{ 2293 struct ipw_softc *sc = priv; 2294 struct ieee80211com *ic = &sc->sc_ic; 2295 2296 IPW_LOCK(sc); 2297 ipw_init_locked(sc); 2298 IPW_UNLOCK(sc); 2299 2300 if (sc->flags & IPW_FLAG_RUNNING) 2301 ieee80211_start_all(ic); /* start all vap's */ 2302} 2303 2304static void 2305ipw_init_locked(struct ipw_softc *sc) 2306{ 2307 struct ieee80211com *ic = &sc->sc_ic; 2308 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2309 const struct firmware *fp; 2310 const struct ipw_firmware_hdr *hdr; 2311 const char *fw; 2312 2313 IPW_LOCK_ASSERT(sc); 2314 2315 DPRINTF(("%s: state %s flags 0x%x\n", __func__, 2316 ieee80211_state_name[vap->iv_state], sc->flags)); 2317 2318 /* 2319 * Avoid re-entrant calls. We need to release the mutex in ipw_init() 2320 * when loading the firmware and we don't want to be called during this 2321 * operation. 2322 */ 2323 if (sc->flags & IPW_FLAG_INIT_LOCKED) 2324 return; 2325 sc->flags |= IPW_FLAG_INIT_LOCKED; 2326 2327 ipw_stop_locked(sc); 2328 2329 if (ipw_reset(sc) != 0) { 2330 device_printf(sc->sc_dev, "could not reset adapter\n"); 2331 goto fail; 2332 } 2333 2334 if (sc->sc_firmware == NULL) { 2335 device_printf(sc->sc_dev, "no firmware\n"); 2336 goto fail; 2337 } 2338 /* NB: consistency already checked on load */ 2339 fp = sc->sc_firmware; 2340 hdr = (const struct ipw_firmware_hdr *)fp->data; 2341 2342 DPRINTF(("Loading firmware image '%s'\n", fp->name)); 2343 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz); 2344 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) { 2345 device_printf(sc->sc_dev, "could not load microcode\n"); 2346 goto fail; 2347 } 2348 2349 ipw_stop_master(sc); 2350 2351 /* 2352 * Setup tx, rx and status rings. 2353 */ 2354 sc->txold = IPW_NTBD - 1; 2355 sc->txcur = 0; 2356 sc->txfree = IPW_NTBD - 2; 2357 sc->rxcur = IPW_NRBD - 1; 2358 2359 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys); 2360 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD); 2361 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0); 2362 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur); 2363 2364 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys); 2365 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD); 2366 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0); 2367 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur); 2368 2369 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys); 2370 2371 fw = (const char *)fp->data + sizeof *hdr; 2372 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) { 2373 device_printf(sc->sc_dev, "could not load firmware\n"); 2374 goto fail; 2375 } 2376 2377 sc->flags |= IPW_FLAG_FW_INITED; 2378 2379 /* retrieve information tables base addresses */ 2380 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE); 2381 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE); 2382 2383 ipw_write_table1(sc, IPW_INFO_LOCK, 0); 2384 2385 if (ipw_config(sc) != 0) { 2386 device_printf(sc->sc_dev, "device configuration failed\n"); 2387 goto fail; 2388 } 2389 2390 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc); 2391 sc->flags |= IPW_FLAG_RUNNING; 2392 sc->flags &= ~IPW_FLAG_INIT_LOCKED; 2393 return; 2394 2395fail: 2396 ipw_stop_locked(sc); 2397 sc->flags &= ~IPW_FLAG_INIT_LOCKED; 2398} 2399 2400static int 2401ipw_config(struct ipw_softc *sc) 2402{ 2403 struct ieee80211com *ic = &sc->sc_ic; 2404 struct ipw_configuration config; 2405 uint32_t data; 2406 int error; 2407 2408 error = ipw_disable(sc); 2409 if (error != 0) 2410 return error; 2411 2412 switch (ic->ic_opmode) { 2413 case IEEE80211_M_STA: 2414 case IEEE80211_M_HOSTAP: 2415 case IEEE80211_M_WDS: /* XXX */ 2416 data = htole32(IPW_MODE_BSS); 2417 break; 2418 case IEEE80211_M_IBSS: 2419 case IEEE80211_M_AHDEMO: 2420 data = htole32(IPW_MODE_IBSS); 2421 break; 2422 case IEEE80211_M_MONITOR: 2423 data = htole32(IPW_MODE_MONITOR); 2424 break; 2425 default: 2426 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2427 return EINVAL; 2428 } 2429 DPRINTF(("Setting mode to %u\n", le32toh(data))); 2430 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data); 2431 if (error != 0) 2432 return error; 2433 2434 if (ic->ic_opmode == IEEE80211_M_IBSS || 2435 ic->ic_opmode == IEEE80211_M_MONITOR) { 2436 error = ipw_setchannel(sc, ic->ic_curchan); 2437 if (error != 0) 2438 return error; 2439 } 2440 2441 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2442 return ipw_enable(sc); 2443 2444 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK | 2445 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE); 2446 if (ic->ic_opmode == IEEE80211_M_IBSS) 2447 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START); 2448 if (ic->ic_promisc > 0) 2449 config.flags |= htole32(IPW_CFG_PROMISCUOUS); 2450 config.bss_chan = htole32(0x3fff); /* channels 1-14 */ 2451 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */ 2452 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags))); 2453 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config); 2454 if (error != 0) 2455 return error; 2456 2457 data = htole32(0xf); /* 1, 2, 5.5, 11 */ 2458 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data))); 2459 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data); 2460 if (error != 0) 2461 return error; 2462 2463 /* Use the same rate set */ 2464 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data))); 2465 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data); 2466 if (error != 0) 2467 return error; 2468 2469 /* Use the same rate set */ 2470 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data))); 2471 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data); 2472 if (error != 0) 2473 return error; 2474 2475 data = htole32(IPW_POWER_MODE_CAM); 2476 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2477 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data); 2478 if (error != 0) 2479 return error; 2480 2481 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2482 data = htole32(32); /* default value */ 2483 DPRINTF(("Setting tx power index to %u\n", le32toh(data))); 2484 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data, 2485 sizeof data); 2486 if (error != 0) 2487 return error; 2488 } 2489 2490 return 0; 2491} 2492 2493static void 2494ipw_stop(void *priv) 2495{ 2496 struct ipw_softc *sc = priv; 2497 2498 IPW_LOCK(sc); 2499 ipw_stop_locked(sc); 2500 IPW_UNLOCK(sc); 2501} 2502 2503static void 2504ipw_stop_locked(struct ipw_softc *sc) 2505{ 2506 int i; 2507 2508 IPW_LOCK_ASSERT(sc); 2509 2510 callout_stop(&sc->sc_wdtimer); 2511 ipw_stop_master(sc); 2512 2513 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET); 2514 2515 /* 2516 * Release tx buffers. 2517 */ 2518 for (i = 0; i < IPW_NTBD; i++) 2519 ipw_release_sbd(sc, &sc->stbd_list[i]); 2520 2521 sc->sc_tx_timer = 0; 2522 sc->flags &= ~IPW_FLAG_RUNNING; 2523} 2524 2525static int 2526ipw_sysctl_stats(SYSCTL_HANDLER_ARGS) 2527{ 2528 struct ipw_softc *sc = arg1; 2529 uint32_t i, size, buf[256]; 2530 2531 memset(buf, 0, sizeof buf); 2532 2533 if (!(sc->flags & IPW_FLAG_FW_INITED)) 2534 return SYSCTL_OUT(req, buf, sizeof buf); 2535 2536 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base); 2537 2538 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256); 2539 for (i = 1; i < size; i++) 2540 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA)); 2541 2542 return SYSCTL_OUT(req, buf, size); 2543} 2544 2545static int 2546ipw_sysctl_radio(SYSCTL_HANDLER_ARGS) 2547{ 2548 struct ipw_softc *sc = arg1; 2549 int val; 2550 2551 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) && 2552 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED)); 2553 2554 return SYSCTL_OUT(req, &val, sizeof val); 2555} 2556 2557static uint32_t 2558ipw_read_table1(struct ipw_softc *sc, uint32_t off) 2559{ 2560 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off)); 2561} 2562 2563static void 2564ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info) 2565{ 2566 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info); 2567} 2568 2569#if 0 2570static int 2571ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len) 2572{ 2573 uint32_t addr, info; 2574 uint16_t count, size; 2575 uint32_t total; 2576 2577 /* addr[4] + count[2] + size[2] */ 2578 addr = MEM_READ_4(sc, sc->table2_base + off); 2579 info = MEM_READ_4(sc, sc->table2_base + off + 4); 2580 2581 count = info >> 16; 2582 size = info & 0xffff; 2583 total = count * size; 2584 2585 if (total > *len) { 2586 *len = total; 2587 return EINVAL; 2588 } 2589 2590 *len = total; 2591 ipw_read_mem_1(sc, addr, buf, total); 2592 2593 return 0; 2594} 2595 2596static void 2597ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap, 2598 bus_size_t count) 2599{ 2600 for (; count > 0; offset++, datap++, count--) { 2601 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2602 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3)); 2603 } 2604} 2605#endif 2606 2607static void 2608ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap, 2609 bus_size_t count) 2610{ 2611 for (; count > 0; offset++, datap++, count--) { 2612 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3); 2613 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap); 2614 } 2615} 2616 2617static void 2618ipw_scan_start(struct ieee80211com *ic) 2619{ 2620 struct ipw_softc *sc = ic->ic_softc; 2621 2622 IPW_LOCK(sc); 2623 ipw_scan(sc); 2624 IPW_UNLOCK(sc); 2625} 2626 2627static void 2628ipw_getradiocaps(struct ieee80211com *ic, 2629 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2630{ 2631 struct ipw_softc *sc = ic->ic_softc; 2632 uint8_t bands[IEEE80211_MODE_BYTES]; 2633 int i; 2634 2635 memset(bands, 0, sizeof(bands)); 2636 setbit(bands, IEEE80211_MODE_11B); 2637 2638 for (i = 1; i < 16; i++) { 2639 if (sc->chanmask & (1 << i)) { 2640 ieee80211_add_channel(chans, maxchans, nchans, 2641 i, 0, 0, 0, bands); 2642 } 2643 } 2644 2645} 2646 2647static void 2648ipw_set_channel(struct ieee80211com *ic) 2649{ 2650 struct ipw_softc *sc = ic->ic_softc; 2651 2652 IPW_LOCK(sc); 2653 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2654 ipw_disable(sc); 2655 ipw_setchannel(sc, ic->ic_curchan); 2656 ipw_enable(sc); 2657 } 2658 IPW_UNLOCK(sc); 2659} 2660 2661static void 2662ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 2663{ 2664 /* NB: all channels are scanned at once */ 2665} 2666 2667static void 2668ipw_scan_mindwell(struct ieee80211_scan_state *ss) 2669{ 2670 /* NB: don't try to abort scan; wait for firmware to finish */ 2671} 2672 2673static void 2674ipw_scan_end(struct ieee80211com *ic) 2675{ 2676 struct ipw_softc *sc = ic->ic_softc; 2677 2678 IPW_LOCK(sc); 2679 sc->flags &= ~IPW_FLAG_SCANNING; 2680 IPW_UNLOCK(sc); 2681} 2682