if_wpi.c revision 1.5
1/* $NetBSD: if_wpi.c,v 1.5 2006/10/31 21:53:41 joerg Exp $ */ 2 3/*- 4 * Copyright (c) 2006 5 * Damien Bergamini <damien.bergamini@free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20#include <sys/cdefs.h> 21__KERNEL_RCSID(0, "$NetBSD: if_wpi.c,v 1.5 2006/10/31 21:53:41 joerg Exp $"); 22 23/* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 */ 26 27#include "bpfilter.h" 28 29#include <sys/param.h> 30#include <sys/sockio.h> 31#include <sys/sysctl.h> 32#include <sys/mbuf.h> 33#include <sys/kernel.h> 34#include <sys/socket.h> 35#include <sys/systm.h> 36#include <sys/malloc.h> 37#include <sys/conf.h> 38#include <sys/kauth.h> 39 40#include <machine/bus.h> 41#include <machine/endian.h> 42#include <machine/intr.h> 43 44#include <dev/pci/pcireg.h> 45#include <dev/pci/pcivar.h> 46#include <dev/pci/pcidevs.h> 47 48#if NBPFILTER > 0 49#include <net/bpf.h> 50#endif 51#include <net/if.h> 52#include <net/if_arp.h> 53#include <net/if_dl.h> 54#include <net/if_ether.h> 55#include <net/if_media.h> 56#include <net/if_types.h> 57 58#include <net80211/ieee80211_var.h> 59#include <net80211/ieee80211_amrr.h> 60#include <net80211/ieee80211_radiotap.h> 61 62#include <netinet/in.h> 63#include <netinet/in_systm.h> 64#include <netinet/in_var.h> 65#include <netinet/ip.h> 66 67#include <dev/firmload.h> 68 69#include <dev/pci/if_wpireg.h> 70#include <dev/pci/if_wpivar.h> 71 72#ifdef WPI_DEBUG 73#define DPRINTF(x) if (wpi_debug > 0) printf x 74#define DPRINTFN(n, x) if (wpi_debug >= (n)) printf x 75int wpi_debug = 1; 76#else 77#define DPRINTF(x) 78#define DPRINTFN(n, x) 79#endif 80 81/* 82 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 83 */ 84static const struct ieee80211_rateset wpi_rateset_11a = 85 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 86 87static const struct ieee80211_rateset wpi_rateset_11b = 88 { 4, { 2, 4, 11, 22 } }; 89 90static const struct ieee80211_rateset wpi_rateset_11g = 91 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 92 93static const uint8_t wpi_ridx_to_plcp[] = { 94 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, /* OFDM R1-R4 */ 95 10, 20, 55, 110 /* CCK */ 96}; 97 98static int wpi_match(struct device *, struct cfdata *, void *); 99static void wpi_attach(struct device *, struct device *, void *); 100static int wpi_detach(struct device*, int); 101static void wpi_power(int, void *); 102static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 103 void **, bus_size_t, bus_size_t, int); 104static void wpi_dma_contig_free(struct wpi_softc *, struct wpi_dma_info *); 105static int wpi_alloc_shared(struct wpi_softc *); 106static void wpi_free_shared(struct wpi_softc *); 107static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 108static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 109static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 110static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, int, 111 int); 112static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 113static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 114static struct ieee80211_node * wpi_node_alloc(struct ieee80211_node_table *); 115static int wpi_media_change(struct ifnet *); 116static int wpi_newstate(struct ieee80211com *, enum ieee80211_state, int); 117static void wpi_mem_lock(struct wpi_softc *); 118static void wpi_mem_unlock(struct wpi_softc *); 119static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 120static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 121static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 122 const uint32_t *, int); 123static uint16_t wpi_read_prom_word(struct wpi_softc *, uint32_t); 124static int wpi_load_firmware(struct wpi_softc *, uint32_t, const char *, 125 int); 126static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 127 struct wpi_rx_data *); 128static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 129static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 130static void wpi_notif_intr(struct wpi_softc *); 131static int wpi_intr(void *); 132static uint8_t wpi_plcp_signal(int); 133static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 134 struct ieee80211_node *, int); 135static void wpi_start(struct ifnet *); 136static void wpi_watchdog(struct ifnet *); 137static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 138static void wpi_read_eeprom(struct wpi_softc *); 139static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 140static int wpi_wme_update(struct ieee80211com *); 141static int wpi_mrr_setup(struct wpi_softc *); 142static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 143static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 144static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 145static int wpi_auth(struct wpi_softc *); 146static int wpi_scan(struct wpi_softc *, uint16_t); 147static int wpi_config(struct wpi_softc *); 148static void wpi_stop_master(struct wpi_softc *); 149static int wpi_power_up(struct wpi_softc *); 150static int wpi_reset(struct wpi_softc *); 151static void wpi_hw_config(struct wpi_softc *); 152static int wpi_init(struct ifnet *); 153static void wpi_stop(struct ifnet *, int); 154 155/* rate control algorithm: should be moved to net80211 */ 156static void wpi_iter_func(void *, struct ieee80211_node *); 157static void wpi_amrr_timeout(void *); 158static void wpi_newassoc(struct ieee80211_node *, 159 int); 160 161CFATTACH_DECL(wpi, sizeof (struct wpi_softc), wpi_match, wpi_attach, 162 wpi_detach, NULL); 163 164static int 165wpi_match(struct device *parent __unused, struct cfdata *match __unused, 166 void *aux) 167{ 168 struct pci_attach_args *pa = aux; 169 170 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 171 return 0; 172 173 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_1 || 174 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_3945ABG_2) 175 return 1; 176 177 return 0; 178} 179 180/* Base Address Register */ 181#define WPI_PCI_BAR0 0x10 182 183static void 184wpi_attach(struct device *parent __unused, struct device *self, void *aux) 185{ 186 struct wpi_softc *sc = (struct wpi_softc *)self; 187 struct ieee80211com *ic = &sc->sc_ic; 188 struct ifnet *ifp = &sc->sc_ec.ec_if; 189 struct pci_attach_args *pa = aux; 190 const char *intrstr; 191 char devinfo[256]; 192 bus_space_tag_t memt; 193 bus_space_handle_t memh; 194 bus_addr_t base; 195 pci_intr_handle_t ih; 196 pcireg_t data; 197 int error, ac, revision, i; 198 199 sc->sc_pct = pa->pa_pc; 200 sc->sc_pcitag = pa->pa_tag; 201 202 callout_init(&sc->amrr_ch); 203 204 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 205 revision = PCI_REVISION(pa->pa_class); 206 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 207 208 /* clear device specific PCI configuration register 0x41 */ 209 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 210 data &= ~0x0000ff00; 211 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 212 213 /* enable bus-mastering */ 214 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 215 data |= PCI_COMMAND_MASTER_ENABLE; 216 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 217 218 /* map the register window */ 219 error = pci_mapreg_map(pa, WPI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 220 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, &base, &sc->sc_sz); 221 if (error != 0) { 222 aprint_error("%s: could not map memory space\n", 223 sc->sc_dev.dv_xname); 224 return; 225 } 226 227 sc->sc_st = memt; 228 sc->sc_sh = memh; 229 sc->sc_dmat = pa->pa_dmat; 230 231 if (pci_intr_map(pa, &ih) != 0) { 232 aprint_error("%s: could not map interrupt\n", 233 sc->sc_dev.dv_xname); 234 return; 235 } 236 237 intrstr = pci_intr_string(sc->sc_pct, ih); 238 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, wpi_intr, sc); 239 if (sc->sc_ih == NULL) { 240 aprint_error("%s: could not establish interrupt", 241 sc->sc_dev.dv_xname); 242 if (intrstr != NULL) 243 aprint_error(" at %s", intrstr); 244 aprint_error("\n"); 245 return; 246 } 247 aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 248 249 if (wpi_reset(sc) != 0) { 250 aprint_error("%s: could not reset adapter\n", 251 sc->sc_dev.dv_xname); 252 return; 253 } 254 255 /* 256 * Allocate shared page and Tx/Rx rings. 257 */ 258 if ((error = wpi_alloc_shared(sc)) != 0) { 259 aprint_error("%s: could not allocate shared area\n", 260 sc->sc_dev.dv_xname); 261 return; 262 } 263 264 for (ac = 0; ac < 4; ac++) { 265 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 266 if (error != 0) { 267 aprint_error("%s: could not allocate Tx ring %d\n", 268 sc->sc_dev.dv_xname, ac); 269 goto fail1; 270 } 271 } 272 273 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 274 if (error != 0) { 275 aprint_error("%s: could not allocate command ring\n", 276 sc->sc_dev.dv_xname); 277 goto fail1; 278 } 279 280 error = wpi_alloc_tx_ring(sc, &sc->svcq, WPI_SVC_RING_COUNT, 5); 281 if (error != 0) { 282 aprint_error("%s: could not allocate service ring\n", 283 sc->sc_dev.dv_xname); 284 goto fail2; 285 } 286 287 if (wpi_alloc_rx_ring(sc, &sc->rxq) != 0) { 288 aprint_error("%s: could not allocate Rx ring\n", 289 sc->sc_dev.dv_xname); 290 goto fail3; 291 } 292 293 294 ic->ic_ifp = ifp; 295 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 296 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 297 ic->ic_state = IEEE80211_S_INIT; 298 299 /* set device capabilities */ 300 ic->ic_caps = 301 IEEE80211_C_IBSS | /* IBSS mode support */ 302 IEEE80211_C_WPA | /* 802.11i */ 303 IEEE80211_C_MONITOR | /* monitor mode supported */ 304 IEEE80211_C_TXPMGT | /* tx power management */ 305 IEEE80211_C_SHSLOT | /* short slot time supported */ 306 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 307 IEEE80211_C_WME; /* 802.11e */ 308 309 wpi_read_eeprom(sc); 310 aprint_normal("%s: 802.11 address %s\n", sc->sc_dev.dv_xname, 311 ether_sprintf(ic->ic_myaddr)); 312 313 /* set supported .11a rates */ 314 ic->ic_sup_rates[IEEE80211_MODE_11A] = wpi_rateset_11a; 315 316 /* set supported .11a channels */ 317 for (i = 36; i <= 64; i += 4) { 318 ic->ic_channels[i].ic_freq = 319 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 320 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 321 } 322 for (i = 100; i <= 140; i += 4) { 323 ic->ic_channels[i].ic_freq = 324 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 325 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 326 } 327 for (i = 149; i <= 165; i += 4) { 328 ic->ic_channels[i].ic_freq = 329 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 330 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 331 } 332 333 /* set supported .11b and .11g rates */ 334 ic->ic_sup_rates[IEEE80211_MODE_11B] = wpi_rateset_11b; 335 ic->ic_sup_rates[IEEE80211_MODE_11G] = wpi_rateset_11g; 336 337 /* set supported .11b and .11g channels (1 through 14) */ 338 for (i = 1; i <= 14; i++) { 339 ic->ic_channels[i].ic_freq = 340 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 341 ic->ic_channels[i].ic_flags = 342 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 343 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 344 } 345 346 ic->ic_ibss_chan = &ic->ic_channels[0]; 347 348 ifp->if_softc = sc; 349 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 350 ifp->if_init = wpi_init; 351 ifp->if_stop = wpi_stop; 352 ifp->if_ioctl = wpi_ioctl; 353 ifp->if_start = wpi_start; 354 ifp->if_watchdog = wpi_watchdog; 355 IFQ_SET_READY(&ifp->if_snd); 356 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 357 358 if_attach(ifp); 359 ieee80211_ifattach(ic); 360 /* override default methods */ 361 ic->ic_node_alloc = wpi_node_alloc; 362 ic->ic_newassoc = wpi_newassoc; 363 ic->ic_wme.wme_update = wpi_wme_update; 364 365 /* override state transition machine */ 366 sc->sc_newstate = ic->ic_newstate; 367 ic->ic_newstate = wpi_newstate; 368 ieee80211_media_init(ic, wpi_media_change, ieee80211_media_status); 369 370 sc->amrr.amrr_min_success_threshold = 1; 371 sc->amrr.amrr_max_success_threshold = 15; 372 373 /* set powerhook */ 374 sc->powerhook = powerhook_establish(sc->sc_dev.dv_xname, wpi_power, sc); 375 376#if NBPFILTER > 0 377 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 378 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, 379 &sc->sc_drvbpf); 380 381 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 382 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 383 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 384 385 sc->sc_txtap_len = sizeof sc->sc_txtapu; 386 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 387 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 388#endif 389 390 ieee80211_announce(ic); 391 392 return; 393 394fail3: wpi_free_tx_ring(sc, &sc->svcq); 395fail2: wpi_free_tx_ring(sc, &sc->cmdq); 396fail1: while (--ac >= 0) 397 wpi_free_tx_ring(sc, &sc->txq[ac]); 398 wpi_free_shared(sc); 399} 400 401static int 402wpi_detach(struct device* self, int flags __unused) 403{ 404 struct wpi_softc *sc = (struct wpi_softc *)self; 405 struct ifnet *ifp = &sc->sc_ec.ec_if; 406 int ac; 407 408 wpi_stop(ifp, 1); 409 410#if NBPFILTER > 0 411 if (ifp != NULL) 412 bpfdetach(ifp); 413#endif 414 ieee80211_ifdetach(&sc->sc_ic); 415 if (ifp != NULL) 416 if_detach(ifp); 417 418 for (ac = 0; ac < 4; ac++) 419 wpi_free_tx_ring(sc, &sc->txq[ac]); 420 wpi_free_tx_ring(sc, &sc->cmdq); 421 wpi_free_tx_ring(sc, &sc->svcq); 422 wpi_free_rx_ring(sc, &sc->rxq); 423 wpi_free_shared(sc); 424 425 if (sc->sc_ih != NULL) { 426 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 427 sc->sc_ih = NULL; 428 } 429 430 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 431 432 return 0; 433} 434 435static void 436wpi_power(int why, void *arg) 437{ 438 struct wpi_softc *sc = arg; 439 struct ifnet *ifp; 440 pcireg_t data; 441 int s; 442 443 if (why != PWR_RESUME) 444 return; 445 446 /* clear device specific PCI configuration register 0x41 */ 447 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 448 data &= ~0x0000ff00; 449 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 450 451 s = splnet(); 452 ifp = sc->sc_ic.ic_ifp; 453 if (ifp->if_flags & IFF_UP) { 454 ifp->if_init(ifp); 455 if (ifp->if_flags & IFF_RUNNING) 456 ifp->if_start(ifp); 457 } 458 splx(s); 459} 460 461static int 462wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 463 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 464{ 465 int nsegs, error; 466 467 dma->size = size; 468 469 error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, 470 flags, &dma->map); 471 if (error != 0) { 472 aprint_error("%s: could not create DMA map\n", 473 sc->sc_dev.dv_xname); 474 goto fail; 475 } 476 477 error = bus_dmamem_alloc(sc->sc_dmat, size, alignment, 0, &dma->seg, 478 1, &nsegs, flags); 479 if (error != 0) { 480 aprint_error("%s: could not allocate DMA memory\n", 481 sc->sc_dev.dv_xname); 482 goto fail; 483 } 484 485 error = bus_dmamem_map(sc->sc_dmat, &dma->seg, 1, size, 486 &dma->vaddr, flags); 487 if (error != 0) { 488 aprint_error("%s: could not map DMA memory\n", 489 sc->sc_dev.dv_xname); 490 goto fail; 491 } 492 493 error = bus_dmamap_load(sc->sc_dmat, dma->map, dma->vaddr, 494 size, NULL, flags); 495 if (error != 0) { 496 aprint_error("%s: could not load DMA memory\n", 497 sc->sc_dev.dv_xname); 498 goto fail; 499 } 500 501 memset(dma->vaddr, 0, size); 502 503 dma->paddr = dma->map->dm_segs[0].ds_addr; 504 *kvap = dma->vaddr; 505 506 return 0; 507 508fail: wpi_dma_contig_free(sc, dma); 509 return error; 510} 511 512static void 513wpi_dma_contig_free(struct wpi_softc *sc, struct wpi_dma_info *dma) 514{ 515 if (dma->map != NULL) { 516 if (dma->vaddr != NULL) { 517 bus_dmamap_unload(sc->sc_dmat, dma->map); 518 bus_dmamem_unmap(sc->sc_dmat, dma->vaddr, dma->size); 519 bus_dmamem_free(sc->sc_dmat, &dma->seg, 1); 520 dma->vaddr = NULL; 521 } 522 bus_dmamap_destroy(sc->sc_dmat, dma->map); 523 dma->map = NULL; 524 } 525} 526 527/* 528 * Allocate a shared page between host and NIC. 529 */ 530static int 531wpi_alloc_shared(struct wpi_softc *sc) 532{ 533 int error; 534 /* must be aligned on a 4K-page boundary */ 535 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 536 (void **)&sc->shared, sizeof (struct wpi_shared), PAGE_SIZE, 537 BUS_DMA_NOWAIT); 538 if (error != 0) 539 aprint_error("%s: could not allocate shared area DMA memory\n", 540 sc->sc_dev.dv_xname); 541 542 return error; 543} 544 545static void 546wpi_free_shared(struct wpi_softc *sc) 547{ 548 wpi_dma_contig_free(sc, &sc->shared_dma); 549} 550 551static int 552wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 553{ 554 struct wpi_rx_data *data; 555 int i, error; 556 557 ring->cur = 0; 558 559 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 560 (void **)&ring->desc, 561 WPI_RX_RING_COUNT * sizeof (struct wpi_rx_desc), 562 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 563 if (error != 0) { 564 aprint_error("%s: could not allocate rx ring DMA memory\n", 565 sc->sc_dev.dv_xname); 566 goto fail; 567 } 568 569 /* 570 * Allocate Rx buffers. 571 */ 572 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 573 data = &ring->data[i]; 574 575 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 576 0, BUS_DMA_NOWAIT, &data->map); 577 if (error != 0) { 578 aprint_error("%s: could not create rx buf DMA map\n", 579 sc->sc_dev.dv_xname); 580 goto fail; 581 } 582 583 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 584 if (data->m == NULL) { 585 aprint_error("%s: could not allocate rx mbuf\n", 586 sc->sc_dev.dv_xname); 587 error = ENOMEM; 588 goto fail; 589 } 590 591 MCLGET(data->m, M_DONTWAIT); 592 if (!(data->m->m_flags & M_EXT)) { 593 m_freem(data->m); 594 data->m = NULL; 595 aprint_error("%s: could not allocate rx mbuf cluster\n", 596 sc->sc_dev.dv_xname); 597 error = ENOMEM; 598 goto fail; 599 } 600 601 error = bus_dmamap_load(sc->sc_dmat, data->map, 602 mtod(data->m, void *), MCLBYTES, NULL, BUS_DMA_NOWAIT | 603 BUS_DMA_READ); 604 if (error != 0) { 605 aprint_error("%s: could not load rx buf DMA map\n", 606 sc->sc_dev.dv_xname); 607 goto fail; 608 } 609 610 ring->desc[i] = htole32(data->map->dm_segs[0].ds_addr); 611 } 612 613 return 0; 614 615fail: wpi_free_rx_ring(sc, ring); 616 return error; 617} 618 619static void 620wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 621{ 622 int ntries; 623 624 wpi_mem_lock(sc); 625 626 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 627 for (ntries = 0; ntries < 100; ntries++) { 628 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 629 break; 630 DELAY(10); 631 } 632#ifdef WPI_DEBUG 633 if (ntries == 100 && wpi_debug > 0) 634 aprint_error("%s: timeout resetting Rx ring\n", 635 sc->sc_dev.dv_xname); 636#endif 637 wpi_mem_unlock(sc); 638 639 ring->cur = 0; 640} 641 642static void 643wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 644{ 645 struct wpi_rx_data *data; 646 int i; 647 648 wpi_dma_contig_free(sc, &ring->desc_dma); 649 650 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 651 data = &ring->data[i]; 652 653 if (data->m != NULL) { 654 bus_dmamap_unload(sc->sc_dmat, data->map); 655 m_freem(data->m); 656 } 657 bus_dmamap_destroy(sc->sc_dmat, data->map); 658 } 659} 660 661static int 662wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 663 int qid) 664{ 665 struct wpi_tx_data *data; 666 int i, error; 667 668 ring->qid = qid; 669 ring->count = count; 670 ring->queued = 0; 671 ring->cur = 0; 672 673 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 674 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 675 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 676 if (error != 0) { 677 aprint_error("%s: could not allocate tx ring DMA memory\n", 678 sc->sc_dev.dv_xname); 679 goto fail; 680 } 681 682 /* update shared page with ring's base address */ 683 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 684 685 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 686 count * sizeof (struct wpi_tx_cmd), 4, BUS_DMA_NOWAIT); 687 if (error != 0) { 688 aprint_error("%s: could not allocate tx cmd DMA memory\n", 689 sc->sc_dev.dv_xname); 690 goto fail; 691 } 692 693 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 694 M_NOWAIT); 695 if (ring->data == NULL) { 696 aprint_error("%s: could not allocate tx data slots\n", 697 sc->sc_dev.dv_xname); 698 goto fail; 699 } 700 701 memset(ring->data, 0, count * sizeof (struct wpi_tx_data)); 702 703 for (i = 0; i < count; i++) { 704 data = &ring->data[i]; 705 706 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 707 WPI_MAX_SCATTER - 1, MCLBYTES, 0, BUS_DMA_NOWAIT, 708 &data->map); 709 if (error != 0) { 710 aprint_error("%s: could not create tx buf DMA map\n", 711 sc->sc_dev.dv_xname); 712 goto fail; 713 } 714 } 715 716 return 0; 717 718fail: wpi_free_tx_ring(sc, ring); 719 return error; 720} 721 722static void 723wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 724{ 725 struct wpi_tx_data *data; 726 int i, ntries; 727 728 wpi_mem_lock(sc); 729 730 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 731 for (ntries = 0; ntries < 100; ntries++) { 732 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 733 break; 734 DELAY(10); 735 } 736#ifdef WPI_DEBUG 737 if (ntries == 100 && wpi_debug > 0) { 738 aprint_error("%s: timeout resetting Tx ring %d\n", 739 sc->sc_dev.dv_xname, ring->qid); 740 } 741#endif 742 wpi_mem_unlock(sc); 743 744 for (i = 0; i < ring->count; i++) { 745 data = &ring->data[i]; 746 747 if (data->m != NULL) { 748 bus_dmamap_unload(sc->sc_dmat, data->map); 749 m_freem(data->m); 750 data->m = NULL; 751 } 752 } 753 754 ring->queued = 0; 755 ring->cur = 0; 756} 757 758static void 759wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 760{ 761 struct wpi_tx_data *data; 762 int i; 763 764 wpi_dma_contig_free(sc, &ring->desc_dma); 765 wpi_dma_contig_free(sc, &ring->cmd_dma); 766 767 if (ring->data != NULL) { 768 for (i = 0; i < ring->count; i++) { 769 data = &ring->data[i]; 770 771 if (data->m != NULL) { 772 bus_dmamap_unload(sc->sc_dmat, data->map); 773 m_freem(data->m); 774 } 775 } 776 free(ring->data, M_DEVBUF); 777 } 778} 779 780/*ARGUSED*/ 781static struct ieee80211_node * 782wpi_node_alloc(struct ieee80211_node_table *ic __unused) 783{ 784 struct wpi_node *wn; 785 786 wn = malloc(sizeof (struct wpi_node), M_DEVBUF, M_NOWAIT); 787 788 if (wn != NULL) 789 memset(wn, 0, sizeof (struct wpi_node)); 790 return (struct ieee80211_node *)wn; 791} 792 793static int 794wpi_media_change(struct ifnet *ifp) 795{ 796 int error; 797 798 error = ieee80211_media_change(ifp); 799 if (error != ENETRESET) 800 return error; 801 802 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 803 wpi_init(ifp); 804 805 return 0; 806} 807 808static int 809wpi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 810{ 811 struct ifnet *ifp = ic->ic_ifp; 812 struct wpi_softc *sc = ifp->if_softc; 813 int error; 814 815 callout_stop(&sc->amrr_ch); 816 817 switch (nstate) { 818 case IEEE80211_S_SCAN: 819 ieee80211_node_table_reset(&ic->ic_scan); 820 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 821 822 /* make the link LED blink while we're scanning */ 823 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 824 825 if ((error = wpi_scan(sc, IEEE80211_CHAN_G)) != 0) { 826 aprint_error("%s: could not initiate scan\n", 827 sc->sc_dev.dv_xname); 828 ic->ic_flags &= ~(IEEE80211_F_SCAN | IEEE80211_F_ASCAN); 829 return error; 830 } 831 832 ic->ic_state = nstate; 833 return 0; 834 835 case IEEE80211_S_AUTH: 836 sc->config.state &= ~htole16(WPI_STATE_ASSOCIATED); 837 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 838 if ((error = wpi_auth(sc)) != 0) { 839 aprint_error("%s: could not send authentication request\n", 840 sc->sc_dev.dv_xname); 841 return error; 842 } 843 break; 844 845 case IEEE80211_S_RUN: 846 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 847 /* link LED blinks while monitoring */ 848 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 849 break; 850 } 851 852 if (ic->ic_opmode != IEEE80211_M_STA) { 853 (void) wpi_auth(sc); /* XXX */ 854 wpi_setup_beacon(sc, ic->ic_bss); 855 } 856 857 wpi_enable_tsf(sc, ic->ic_bss); 858 859 /* update adapter's configuration */ 860 sc->config.state = htole16(WPI_STATE_ASSOCIATED); 861 /* short preamble/slot time are negotiated when associating */ 862 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 863 WPI_CONFIG_SHSLOT); 864 if (ic->ic_flags & IEEE80211_F_SHSLOT) 865 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 866 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 867 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 868 sc->config.filter |= htole32(WPI_FILTER_BSS); 869 if (ic->ic_opmode != IEEE80211_M_STA) 870 sc->config.filter |= htole32(WPI_FILTER_BEACON); 871 872/* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 873 874 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 875 sc->config.flags)); 876 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 877 sizeof (struct wpi_config), 1); 878 if (error != 0) { 879 aprint_error("%s: could not update configuration\n", 880 sc->sc_dev.dv_xname); 881 return error; 882 } 883 884 if (ic->ic_opmode == IEEE80211_M_STA) { 885 /* fake a join to init the tx rate */ 886 wpi_newassoc(ic->ic_bss, 1); 887 } 888 889 /* enable automatic rate adaptation in STA mode */ 890 if (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 891 callout_reset(&sc->amrr_ch, hz, wpi_amrr_timeout, sc); 892 893 /* link LED always on while associated */ 894 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 895 break; 896 897 case IEEE80211_S_ASSOC: 898 case IEEE80211_S_INIT: 899 break; 900 } 901 902 return sc->sc_newstate(ic, nstate, arg); 903} 904 905/* 906 * Grab exclusive access to NIC memory. 907 */ 908static void 909wpi_mem_lock(struct wpi_softc *sc) 910{ 911 uint32_t tmp; 912 int ntries; 913 914 tmp = WPI_READ(sc, WPI_GPIO_CTL); 915 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 916 917 /* spin until we actually get the lock */ 918 for (ntries = 0; ntries < 1000; ntries++) { 919 if ((WPI_READ(sc, WPI_GPIO_CTL) & 920 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 921 break; 922 DELAY(10); 923 } 924 if (ntries == 1000) 925 aprint_error("%s: could not lock memory\n", sc->sc_dev.dv_xname); 926} 927 928/* 929 * Release lock on NIC memory. 930 */ 931static void 932wpi_mem_unlock(struct wpi_softc *sc) 933{ 934 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 935 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 936} 937 938static uint32_t 939wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 940{ 941 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 942 return WPI_READ(sc, WPI_READ_MEM_DATA); 943} 944 945static void 946wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 947{ 948 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 949 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 950} 951 952static void 953wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 954 const uint32_t *data, int wlen) 955{ 956 for (; wlen > 0; wlen--, data++, addr += 4) 957 wpi_mem_write(sc, addr, *data); 958} 959 960/* 961 * Read 16 bits from the EEPROM. We access EEPROM through the MAC instead of 962 * using the traditional bit-bang method. 963 */ 964static uint16_t 965wpi_read_prom_word(struct wpi_softc *sc, uint32_t addr) 966{ 967 int ntries; 968 uint32_t val; 969 970 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 971 972 wpi_mem_lock(sc); 973 for (ntries = 0; ntries < 10; ntries++) { 974 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 975 break; 976 DELAY(10); 977 } 978 wpi_mem_unlock(sc); 979 980 if (ntries == 10) { 981 aprint_error("%s: could not read EEPROM\n", sc->sc_dev.dv_xname); 982 return 0xdead; 983 } 984 return val >> 16; 985} 986 987/* 988 * The firmware boot code is small and is intended to be copied directly into 989 * the NIC internal memory. 990 */ 991static int 992wpi_load_microcode(struct wpi_softc *sc, const char *ucode, int size) 993{ 994 /* check that microcode size is a multiple of 4 */ 995 if (size & 3) 996 return EINVAL; 997 998 size /= sizeof (uint32_t); 999 1000 wpi_mem_lock(sc); 1001 1002 /* copy microcode image into NIC memory */ 1003 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, (const uint32_t *)ucode, 1004 size); 1005 1006 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1007 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1008 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1009 1010 /* run microcode */ 1011 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1012 1013 wpi_mem_unlock(sc); 1014 1015 return 0; 1016} 1017 1018/* 1019 * The firmware text and data segments are transferred to the NIC using DMA. 1020 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1021 * where to find it. Once the NIC has copied the firmware into its internal 1022 * memory, we can free our local copy in the driver. 1023 */ 1024static int 1025wpi_load_firmware(struct wpi_softc *sc, uint32_t target, const char *fw, 1026 int size) 1027{ 1028 bus_dmamap_t map; 1029 bus_dma_segment_t seg; 1030 caddr_t virtaddr; 1031 struct wpi_tx_desc desc; 1032 int i, ntries, nsegs, error; 1033 1034 /* 1035 * Allocate DMA-safe memory to store the firmware. 1036 */ 1037 error = bus_dmamap_create(sc->sc_dmat, size, WPI_MAX_SCATTER, 1038 WPI_MAX_SEG_LEN, 0, BUS_DMA_NOWAIT, &map); 1039 if (error != 0) { 1040 aprint_error("%s: could not create firmware DMA map\n", 1041 sc->sc_dev.dv_xname); 1042 goto fail1; 1043 } 1044 1045 error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 1046 &nsegs, BUS_DMA_NOWAIT); 1047 if (error != 0) { 1048 aprint_error("%s: could not allocate firmware DMA memory\n", 1049 sc->sc_dev.dv_xname); 1050 goto fail2; 1051 } 1052 1053 error = bus_dmamem_map(sc->sc_dmat, &seg, nsegs, size, &virtaddr, 1054 BUS_DMA_NOWAIT); 1055 if (error != 0) { 1056 aprint_error("%s: could not map firmware DMA memory\n", 1057 sc->sc_dev.dv_xname); 1058 goto fail3; 1059 } 1060 1061 error = bus_dmamap_load(sc->sc_dmat, map, virtaddr, size, NULL, 1062 BUS_DMA_NOWAIT | BUS_DMA_WRITE); 1063 if (error != 0) { 1064 aprint_error("%s: could not load firmware DMA map\n", 1065 sc->sc_dev.dv_xname); 1066 goto fail4; 1067 } 1068 1069 /* copy firmware image to DMA-safe memory */ 1070 bcopy(fw, virtaddr, size); 1071 1072 /* make sure the adapter will get up-to-date values */ 1073 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 1074 1075 bzero(&desc, sizeof desc); 1076 desc.flags = htole32(WPI_PAD32(size) << 28 | map->dm_nsegs << 24); 1077 for (i = 0; i < map->dm_nsegs; i++) { 1078 desc.segs[i].addr = htole32(map->dm_segs[i].ds_addr); 1079 desc.segs[i].len = htole32(map->dm_segs[i].ds_len); 1080 } 1081 1082 wpi_mem_lock(sc); 1083 1084 /* tell adapter where to copy image in its internal memory */ 1085 WPI_WRITE(sc, WPI_FW_TARGET, target); 1086 1087 WPI_WRITE(sc, WPI_TX_CONFIG(6), 0); 1088 1089 /* copy firmware descriptor into NIC memory */ 1090 WPI_WRITE_REGION_4(sc, WPI_TX_DESC(6), (uint32_t *)&desc, 1091 sizeof desc / sizeof (uint32_t)); 1092 1093 WPI_WRITE(sc, WPI_TX_CREDIT(6), 0xfffff); 1094 WPI_WRITE(sc, WPI_TX_STATE(6), 0x4001); 1095 WPI_WRITE(sc, WPI_TX_CONFIG(6), 0x80000001); 1096 1097 /* wait while the adapter is busy copying the firmware */ 1098 for (ntries = 0; ntries < 100; ntries++) { 1099 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(6)) 1100 break; 1101 DELAY(1000); 1102 } 1103 if (ntries == 100) { 1104 aprint_error("%s: timeout transferring firmware\n", 1105 sc->sc_dev.dv_xname); 1106 error = ETIMEDOUT; 1107 } 1108 1109 WPI_WRITE(sc, WPI_TX_CREDIT(6), 0); 1110 1111 wpi_mem_unlock(sc); 1112 1113 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 1114 bus_dmamap_unload(sc->sc_dmat, map); 1115fail4: bus_dmamem_unmap(sc->sc_dmat, virtaddr, size); 1116fail3: bus_dmamem_free(sc->sc_dmat, &seg, 1); 1117fail2: bus_dmamap_destroy(sc->sc_dmat, map); 1118fail1: return error; 1119} 1120 1121static void 1122wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1123 struct wpi_rx_data *data) 1124{ 1125 struct ieee80211com *ic = &sc->sc_ic; 1126 struct ifnet *ifp = ic->ic_ifp; 1127 struct wpi_rx_ring *ring = &sc->rxq; 1128 struct wpi_rx_stat *stat; 1129 struct wpi_rx_head *head; 1130 struct wpi_rx_tail *tail; 1131 struct ieee80211_frame *wh; 1132 struct ieee80211_node *ni; 1133 struct mbuf *m, *mnew; 1134 int error; 1135 1136 stat = (struct wpi_rx_stat *)(desc + 1); 1137 1138 if (stat->len > WPI_STAT_MAXLEN) { 1139 aprint_error("%s: invalid rx statistic header\n", 1140 sc->sc_dev.dv_xname); 1141 ifp->if_ierrors++; 1142 return; 1143 } 1144 1145 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1146 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1147 1148 DPRINTFN(4, ("rx intr: idx=%d len=%d stat len=%d rssi=%d rate=%x " 1149 "chan=%d tstamp=%llu\n", ring->cur, le32toh(desc->len), 1150 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1151 le64toh(tail->tstamp))); 1152 1153 /* 1154 * Discard Rx frames with bad CRC early (XXX we may want to pass them 1155 * to radiotap in monitor mode). 1156 */ 1157 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1158 DPRINTF(("rx tail flags error %x\n", le32toh(tail->flags))); 1159 ifp->if_ierrors++; 1160 return; 1161 } 1162 1163 1164 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1165 if (mnew == NULL) { 1166 ifp->if_ierrors++; 1167 return; 1168 } 1169 1170 MCLGET(mnew, M_DONTWAIT); 1171 if (!(mnew->m_flags & M_EXT)) { 1172 m_freem(mnew); 1173 ifp->if_ierrors++; 1174 return; 1175 } 1176 1177 bus_dmamap_unload(sc->sc_dmat, data->map); 1178 1179 error = bus_dmamap_load(sc->sc_dmat, data->map, mtod(mnew, void *), 1180 MCLBYTES, NULL, BUS_DMA_NOWAIT); 1181 if (error != 0) { 1182 m_freem(mnew); 1183 1184 /* try to reload the old mbuf */ 1185 error = bus_dmamap_load(sc->sc_dmat, data->map, 1186 mtod(data->m, void *), MCLBYTES, NULL, BUS_DMA_NOWAIT); 1187 if (error != 0) { 1188 /* very unlikely that it will fail... */ 1189 panic("%s: could not load old rx mbuf", 1190 sc->sc_dev.dv_xname); 1191 } 1192 ifp->if_ierrors++; 1193 return; 1194 } 1195 1196 m = data->m; 1197 data->m = mnew; 1198 1199 /* update Rx descriptor */ 1200 ring->desc[ring->cur] = htole32(data->map->dm_segs[0].ds_addr); 1201 1202 /* finalize mbuf */ 1203 m->m_pkthdr.rcvif = ifp; 1204 m->m_data = (caddr_t)(head + 1); 1205 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1206 1207#if NBPFILTER > 0 1208 if (sc->sc_drvbpf != NULL) { 1209 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1210 1211 tap->wr_flags = 0; 1212 tap->wr_chan_freq = 1213 htole16(ic->ic_channels[head->chan].ic_freq); 1214 tap->wr_chan_flags = 1215 htole16(ic->ic_channels[head->chan].ic_flags); 1216 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1217 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1218 tap->wr_tsft = tail->tstamp; 1219 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1220 switch (head->rate) { 1221 /* CCK rates */ 1222 case 10: tap->wr_rate = 2; break; 1223 case 20: tap->wr_rate = 4; break; 1224 case 55: tap->wr_rate = 11; break; 1225 case 110: tap->wr_rate = 22; break; 1226 /* OFDM rates */ 1227 case 0xd: tap->wr_rate = 12; break; 1228 case 0xf: tap->wr_rate = 18; break; 1229 case 0x5: tap->wr_rate = 24; break; 1230 case 0x7: tap->wr_rate = 36; break; 1231 case 0x9: tap->wr_rate = 48; break; 1232 case 0xb: tap->wr_rate = 72; break; 1233 case 0x1: tap->wr_rate = 96; break; 1234 case 0x3: tap->wr_rate = 108; break; 1235 /* unknown rate: should not happen */ 1236 default: tap->wr_rate = 0; 1237 } 1238 if (le16toh(head->flags) & 0x4) 1239 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1240 1241 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1242 } 1243#endif 1244 1245 /* grab a reference to the source node */ 1246 wh = mtod(m, struct ieee80211_frame *); 1247 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1248 1249 /* send the frame to the 802.11 layer */ 1250 ieee80211_input(ic, m, ni, stat->rssi, 0); 1251 1252 /* release node reference */ 1253 ieee80211_free_node(ni); 1254} 1255 1256static void 1257wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1258{ 1259 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1260 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1261 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1262 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1263 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1264 1265 DPRINTFN(4, ("tx done: qid=%d idx=%d retries=%d nkill=%d rate=%x " 1266 "duration=%d status=%x\n", desc->qid, desc->idx, stat->ntries, 1267 stat->nkill, stat->rate, le32toh(stat->duration), 1268 le32toh(stat->status))); 1269 1270 /* 1271 * Update rate control statistics for the node. 1272 * XXX we should not count mgmt frames since they're always sent at 1273 * the lowest available bit-rate. 1274 */ 1275 wn->amn.amn_txcnt++; 1276 if (stat->ntries > 0) { 1277 DPRINTFN(3, ("tx intr ntries %d\n", stat->ntries)); 1278 wn->amn.amn_retrycnt++; 1279 } 1280 1281 if ((le32toh(stat->status) & 0xff) != 1) 1282 ifp->if_oerrors++; 1283 else 1284 ifp->if_opackets++; 1285 1286 bus_dmamap_unload(sc->sc_dmat, txdata->map); 1287 m_freem(txdata->m); 1288 txdata->m = NULL; 1289 ieee80211_free_node(txdata->ni); 1290 txdata->ni = NULL; 1291 1292 ring->queued--; 1293 1294 sc->sc_tx_timer = 0; 1295 ifp->if_flags &= ~IFF_OACTIVE; 1296 wpi_start(ifp); 1297} 1298 1299static void 1300wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1301{ 1302 struct wpi_tx_ring *ring = &sc->cmdq; 1303 struct wpi_tx_data *data; 1304 1305 if ((desc->qid & 7) != 4) 1306 return; /* not a command ack */ 1307 1308 data = &ring->data[desc->idx]; 1309 1310 /* if the command was mapped in a mbuf, free it */ 1311 if (data->m != NULL) { 1312 bus_dmamap_unload(sc->sc_dmat, data->map); 1313 m_freem(data->m); 1314 data->m = NULL; 1315 } 1316 1317 wakeup(&ring->cmd[desc->idx]); 1318} 1319 1320static void 1321wpi_notif_intr(struct wpi_softc *sc) 1322{ 1323 struct ieee80211com *ic = &sc->sc_ic; 1324 struct wpi_rx_desc *desc; 1325 struct wpi_rx_data *data; 1326 uint32_t hw; 1327 1328 hw = le32toh(sc->shared->next); 1329 while (sc->rxq.cur != hw) { 1330 data = &sc->rxq.data[sc->rxq.cur]; 1331 1332 desc = mtod(data->m, struct wpi_rx_desc *); 1333 1334 DPRINTFN(4, ("rx notification qid=%x idx=%d flags=%x type=%d " 1335 "len=%d\n", desc->qid, desc->idx, desc->flags, 1336 desc->type, le32toh(desc->len))); 1337 1338 if (!(desc->qid & 0x80)) /* reply to a command */ 1339 wpi_cmd_intr(sc, desc); 1340 1341 switch (desc->type) { 1342 case WPI_RX_DONE: 1343 /* a 802.11 frame was received */ 1344 wpi_rx_intr(sc, desc, data); 1345 break; 1346 1347 case WPI_TX_DONE: 1348 /* a 802.11 frame has been transmitted */ 1349 wpi_tx_intr(sc, desc); 1350 break; 1351 1352 case WPI_UC_READY: 1353 { 1354 struct wpi_ucode_info *uc = 1355 (struct wpi_ucode_info *)(desc + 1); 1356 1357 /* the microcontroller is ready */ 1358 DPRINTF(("microcode alive notification version %x " 1359 "alive %x\n", le32toh(uc->version), 1360 le32toh(uc->valid))); 1361 1362 if (le32toh(uc->valid) != 1) { 1363 aprint_error("%s: microcontroller " 1364 "initialization failed\n", 1365 sc->sc_dev.dv_xname); 1366 } 1367 break; 1368 } 1369 case WPI_STATE_CHANGED: 1370 { 1371 uint32_t *status = (uint32_t *)(desc + 1); 1372 1373 /* enabled/disabled notification */ 1374 DPRINTF(("state changed to %x\n", le32toh(*status))); 1375 1376 if (le32toh(*status) & 1) { 1377 /* the radio button has to be pushed */ 1378 aprint_error("%s: Radio transmitter is off\n", 1379 sc->sc_dev.dv_xname); 1380 } 1381 break; 1382 } 1383 case WPI_START_SCAN: 1384 { 1385 struct wpi_start_scan *scan = 1386 (struct wpi_start_scan *)(desc + 1); 1387 1388 DPRINTFN(2, ("scanning channel %d status %x\n", 1389 scan->chan, le32toh(scan->status))); 1390 1391 /* fix current channel */ 1392 ic->ic_bss->ni_chan = &ic->ic_channels[scan->chan]; 1393 break; 1394 } 1395 case WPI_STOP_SCAN: 1396 { 1397 struct wpi_stop_scan *scan = 1398 (struct wpi_stop_scan *)(desc + 1); 1399 1400 DPRINTF(("scan finished nchan=%d status=%d chan=%d\n", 1401 scan->nchan, scan->status, scan->chan)); 1402 1403 if (scan->status == 1 && scan->chan <= 14) { 1404 /* 1405 * We just finished scanning 802.11g channels, 1406 * start scanning 802.11a ones. 1407 */ 1408 if (wpi_scan(sc, IEEE80211_CHAN_A) == 0) 1409 break; 1410 } 1411 ieee80211_end_scan(ic); 1412 break; 1413 } 1414 } 1415 1416 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1417 } 1418 1419 /* tell the firmware what we have processed */ 1420 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1421 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1422} 1423 1424static int 1425wpi_intr(void *arg) 1426{ 1427 struct wpi_softc *sc = arg; 1428 uint32_t r; 1429 1430 r = WPI_READ(sc, WPI_INTR); 1431 if (r == 0 || r == 0xffffffff) 1432 return 0; /* not for us */ 1433 1434 DPRINTFN(5, ("interrupt reg %x\n", r)); 1435 1436 /* disable interrupts */ 1437 WPI_WRITE(sc, WPI_MASK, 0); 1438 /* ack interrupts */ 1439 WPI_WRITE(sc, WPI_INTR, r); 1440 1441 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1442 /* SYSTEM FAILURE, SYSTEM FAILURE */ 1443 aprint_error("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1444 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1445 wpi_stop(&sc->sc_ec.ec_if, 1); 1446 return 1; 1447 } 1448 1449 if (r & WPI_RX_INTR) 1450 wpi_notif_intr(sc); 1451 1452 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1453 wakeup(sc); 1454 1455 /* re-enable interrupts */ 1456 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1457 1458 return 1; 1459} 1460 1461static uint8_t 1462wpi_plcp_signal(int rate) 1463{ 1464 switch (rate) { 1465 /* CCK rates (returned values are device-dependent) */ 1466 case 2: return 10; 1467 case 4: return 20; 1468 case 11: return 55; 1469 case 22: return 110; 1470 1471 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1472 /* R1-R4, (u)ral is R4-R1 */ 1473 case 12: return 0xd; 1474 case 18: return 0xf; 1475 case 24: return 0x5; 1476 case 36: return 0x7; 1477 case 48: return 0x9; 1478 case 72: return 0xb; 1479 case 96: return 0x1; 1480 case 108: return 0x3; 1481 1482 /* unsupported rates (should not get there) */ 1483 default: return 0; 1484 } 1485} 1486 1487/* quickly determine if a given rate is CCK or OFDM */ 1488#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1489 1490static int 1491wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1492 int ac) 1493{ 1494 struct ieee80211com *ic = &sc->sc_ic; 1495 struct wpi_tx_ring *ring = &sc->txq[ac]; 1496 struct wpi_tx_desc *desc; 1497 struct wpi_tx_data *data; 1498 struct wpi_tx_cmd *cmd; 1499 struct wpi_cmd_data *tx; 1500 struct ieee80211_frame *wh; 1501 struct ieee80211_key *k; 1502 const struct chanAccParams *cap; 1503 struct mbuf *mnew; 1504 int i, error, rate, hdrlen, noack = 0; 1505 1506 desc = &ring->desc[ring->cur]; 1507 data = &ring->data[ring->cur]; 1508 1509 wh = mtod(m0, struct ieee80211_frame *); 1510 1511 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1512 hdrlen = sizeof (struct ieee80211_qosframe); 1513 cap = &ic->ic_wme.wme_chanParams; 1514 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1515 } else 1516 hdrlen = sizeof (struct ieee80211_frame); 1517 1518 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1519 k = ieee80211_crypto_encap(ic, ni, m0); 1520 if (k == NULL) { 1521 m_freem(m0); 1522 return ENOBUFS; 1523 } 1524 1525 /* packet header may have moved, reset our local pointer */ 1526 wh = mtod(m0, struct ieee80211_frame *); 1527 } 1528 1529 /* pickup a rate */ 1530 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1531 IEEE80211_FC0_TYPE_MGT) { 1532 /* mgmt frames are sent at the lowest available bit-rate */ 1533 rate = ni->ni_rates.rs_rates[0]; 1534 } else { 1535 if (ic->ic_fixed_rate != -1) { 1536 rate = ic->ic_sup_rates[ic->ic_curmode]. 1537 rs_rates[ic->ic_fixed_rate]; 1538 } else 1539 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1540 } 1541 rate &= IEEE80211_RATE_VAL; 1542 1543 1544#if NBPFILTER > 0 1545 if (sc->sc_drvbpf != NULL) { 1546 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1547 1548 tap->wt_flags = 0; 1549 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1550 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1551 tap->wt_rate = rate; 1552 tap->wt_hwqueue = ac; 1553 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1554 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1555 1556 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1557 } 1558#endif 1559 1560 cmd = &ring->cmd[ring->cur]; 1561 cmd->code = WPI_CMD_TX_DATA; 1562 cmd->flags = 0; 1563 cmd->qid = ring->qid; 1564 cmd->idx = ring->cur; 1565 1566 tx = (struct wpi_cmd_data *)cmd->data; 1567 tx->flags = 0; 1568 1569 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1570 tx->id = WPI_ID_BSS; 1571 tx->flags |= htole32(WPI_TX_NEED_ACK); 1572 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > 1573 ic->ic_rtsthreshold || (WPI_RATE_IS_OFDM(rate) && 1574 (ic->ic_flags & IEEE80211_F_USEPROT))) 1575 tx->flags |= htole32(WPI_TX_NEED_RTS | 1576 WPI_TX_FULL_TXOP); 1577 } else 1578 tx->id = WPI_ID_BROADCAST; 1579 1580 tx->flags |= htole32(WPI_TX_AUTO_SEQ); 1581 1582 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1583 IEEE80211_FC0_TYPE_MGT) { 1584 /* tell h/w to set timestamp in probe responses */ 1585 if ((wh->i_fc[0] & 1586 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1587 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1588 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1589 1590 if (((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1591 IEEE80211_FC0_SUBTYPE_ASSOC_REQ) || 1592 ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1593 IEEE80211_FC0_SUBTYPE_REASSOC_REQ)) 1594 tx->timeout = htole16(3); 1595 else 1596 tx->timeout = htole16(2); 1597 } else 1598 tx->timeout = htole16(0); 1599 1600 tx->rate = wpi_plcp_signal(rate); 1601 1602 /* be very persistant at sending frames out */ 1603 tx->rts_ntries = 7; 1604 tx->data_ntries = 15; 1605 1606 tx->ofdm_mask = 0xff; 1607 tx->cck_mask = 0xf; 1608 tx->lifetime = htole32(0xffffffff); 1609 1610 tx->len = htole16(m0->m_pkthdr.len); 1611 1612 /* save and trim IEEE802.11 header */ 1613 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1614 m_adj(m0, hdrlen); 1615 1616 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1617 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1618 if (error != 0 && error != EFBIG) { 1619 aprint_error("%s: could not map mbuf (error %d)\n", 1620 sc->sc_dev.dv_xname, error); 1621 m_freem(m0); 1622 return error; 1623 } 1624 if (error != 0) { 1625 /* too many fragments, linearize */ 1626 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1627 if (mnew == NULL) { 1628 m_freem(m0); 1629 return ENOMEM; 1630 } 1631 1632 M_COPY_PKTHDR(mnew, m0); 1633 if (m0->m_pkthdr.len > MHLEN) { 1634 MCLGET(mnew, M_DONTWAIT); 1635 if (!(mnew->m_flags & M_EXT)) { 1636 m_freem(m0); 1637 m_freem(mnew); 1638 return ENOMEM; 1639 } 1640 } 1641 1642 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, caddr_t)); 1643 m_freem(m0); 1644 mnew->m_len = mnew->m_pkthdr.len; 1645 m0 = mnew; 1646 1647 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1648 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1649 if (error != 0) { 1650 aprint_error("%s: could not map mbuf (error %d)\n", 1651 sc->sc_dev.dv_xname, error); 1652 m_freem(m0); 1653 return error; 1654 } 1655 } 1656 1657 data->m = m0; 1658 data->ni = ni; 1659 1660 DPRINTFN(4, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1661 ring->qid, ring->cur, m0->m_pkthdr.len, data->map->dm_nsegs)); 1662 1663 /* first scatter/gather segment is used by the tx data command */ 1664 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1665 (1 + data->map->dm_nsegs) << 24); 1666 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1667 ring->cur * sizeof (struct wpi_tx_cmd)); 1668 /*XXX The next line might be wrong. I don't use hdrlen*/ 1669 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1670 1671 for (i = 1; i <= data->map->dm_nsegs; i++) { 1672 desc->segs[i].addr = 1673 htole32(data->map->dm_segs[i - 1].ds_addr); 1674 desc->segs[i].len = 1675 htole32(data->map->dm_segs[i - 1].ds_len); 1676 } 1677 1678 ring->queued++; 1679 1680 /* kick ring */ 1681 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1682 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1683 1684 return 0; 1685} 1686 1687static void 1688wpi_start(struct ifnet *ifp) 1689{ 1690 struct wpi_softc *sc = ifp->if_softc; 1691 struct ieee80211com *ic = &sc->sc_ic; 1692 struct ieee80211_node *ni; 1693 struct ether_header *eh; 1694 struct mbuf *m0; 1695 int ac; 1696 1697 /* 1698 * net80211 may still try to send management frames even if the 1699 * IFF_RUNNING flag is not set... 1700 */ 1701 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1702 return; 1703 1704 for (;;) { 1705 IF_POLL(&ic->ic_mgtq, m0); 1706 if (m0 != NULL) { 1707 IF_DEQUEUE(&ic->ic_mgtq, m0); 1708 1709 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1710 m0->m_pkthdr.rcvif = NULL; 1711 1712 /* management frames go into ring 0 */ 1713 if (sc->txq[0].queued > sc->txq[0].count - 8) { 1714 ifp->if_oerrors++; 1715 continue; 1716 } 1717#if NBPFILTER > 0 1718 if (ic->ic_rawbpf != NULL) 1719 bpf_mtap(ic->ic_rawbpf, m0); 1720#endif 1721 if (wpi_tx_data(sc, m0, ni, 0) != 0) { 1722 ifp->if_oerrors++; 1723 break; 1724 } 1725 } else { 1726 if (ic->ic_state != IEEE80211_S_RUN) 1727 break; 1728 IF_DEQUEUE(&ifp->if_snd, m0); 1729 if (m0 == NULL) 1730 break; 1731 1732 if (m0->m_len < sizeof (*eh) && 1733 (m0 = m_pullup(m0, sizeof (*eh))) != NULL) { 1734 ifp->if_oerrors++; 1735 continue; 1736 } 1737 eh = mtod(m0, struct ether_header *); 1738 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1739 if (ni == NULL) { 1740 m_freem(m0); 1741 ifp->if_oerrors++; 1742 continue; 1743 } 1744 1745 /* classify mbuf so we can find which tx ring to use */ 1746 if (ieee80211_classify(ic, m0, ni) != 0) { 1747 m_freem(m0); 1748 ieee80211_free_node(ni); 1749 ifp->if_oerrors++; 1750 continue; 1751 } 1752 1753 /* no QoS encapsulation for EAPOL frames */ 1754 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 1755 M_WME_GETAC(m0) : WME_AC_BE; 1756 1757 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 1758 /* there is no place left in this ring */ 1759 IF_PREPEND(&ifp->if_snd, m0); 1760 ifp->if_flags |= IFF_OACTIVE; 1761 break; 1762 } 1763#if NBPFILTER > 0 1764 if (ifp->if_bpf != NULL) 1765 bpf_mtap(ifp->if_bpf, m0); 1766#endif 1767 m0 = ieee80211_encap(ic, m0, ni); 1768 if (m0 == NULL) { 1769 ieee80211_free_node(ni); 1770 ifp->if_oerrors++; 1771 continue; 1772 } 1773#if NBPFILTER > 0 1774 if (ic->ic_rawbpf != NULL) 1775 bpf_mtap(ic->ic_rawbpf, m0); 1776#endif 1777 if (wpi_tx_data(sc, m0, ni, ac) != 0) { 1778 ieee80211_free_node(ni); 1779 ifp->if_oerrors++; 1780 break; 1781 } 1782 } 1783 1784 sc->sc_tx_timer = 5; 1785 ifp->if_timer = 1; 1786 } 1787} 1788 1789static void 1790wpi_watchdog(struct ifnet *ifp) 1791{ 1792 struct wpi_softc *sc = ifp->if_softc; 1793 1794 ifp->if_timer = 0; 1795 1796 if (sc->sc_tx_timer > 0) { 1797 if (--sc->sc_tx_timer == 0) { 1798 aprint_error("%s: device timeout\n", 1799 sc->sc_dev.dv_xname); 1800 ifp->if_oerrors++; 1801 ifp->if_flags &= ~IFF_UP; 1802 wpi_stop(ifp, 1); 1803 return; 1804 } 1805 ifp->if_timer = 1; 1806 } 1807 1808 ieee80211_watchdog(&sc->sc_ic); 1809} 1810 1811static int 1812wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1813{ 1814#define IS_RUNNING(ifp) \ 1815 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 1816 1817 struct wpi_softc *sc = ifp->if_softc; 1818 struct ieee80211com *ic = &sc->sc_ic; 1819 struct ifreq *ifr = (struct ifreq *)data; 1820 int s, error = 0; 1821 1822 s = splnet(); 1823 1824 switch (cmd) { 1825 case SIOCSIFFLAGS: 1826 if (ifp->if_flags & IFF_UP) { 1827 if (!(ifp->if_flags & IFF_RUNNING)) 1828 wpi_init(ifp); 1829 } else { 1830 if (ifp->if_flags & IFF_RUNNING) 1831 wpi_stop(ifp, 1); 1832 } 1833 break; 1834 1835 case SIOCADDMULTI: 1836 case SIOCDELMULTI: 1837 error = (cmd == SIOCADDMULTI) ? 1838 ether_addmulti(ifr, &sc->sc_ec) : 1839 ether_delmulti(ifr, &sc->sc_ec); 1840 if (error == ENETRESET) { 1841 /* setup multicast filter, etc */ 1842 error = 0; 1843 } 1844 break; 1845 1846 default: 1847 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 1848 } 1849 1850 if (error == ENETRESET) { 1851 if (IS_RUNNING(ifp) && 1852 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1853 wpi_init(ifp); 1854 error = 0; 1855 } 1856 1857 splx(s); 1858 return error; 1859 1860#undef IS_RUNNING 1861} 1862 1863/* 1864 * Extract various information from EEPROM. 1865 */ 1866static void 1867wpi_read_eeprom(struct wpi_softc *sc) 1868{ 1869 struct ieee80211com *ic = &sc->sc_ic; 1870 uint16_t val; 1871 int i; 1872 1873 /* read MAC address */ 1874 val = wpi_read_prom_word(sc, WPI_EEPROM_MAC + 0); 1875 ic->ic_myaddr[0] = val & 0xff; 1876 ic->ic_myaddr[1] = val >> 8; 1877 val = wpi_read_prom_word(sc, WPI_EEPROM_MAC + 1); 1878 ic->ic_myaddr[2] = val & 0xff; 1879 ic->ic_myaddr[3] = val >> 8; 1880 val = wpi_read_prom_word(sc, WPI_EEPROM_MAC + 2); 1881 ic->ic_myaddr[4] = val & 0xff; 1882 ic->ic_myaddr[5] = val >> 8; 1883 1884 /* read power settings for 2.4GHz channels */ 1885 for (i = 0; i < 14; i++) { 1886 sc->pwr1[i] = wpi_read_prom_word(sc, WPI_EEPROM_PWR1 + i); 1887 sc->pwr2[i] = wpi_read_prom_word(sc, WPI_EEPROM_PWR2 + i); 1888 DPRINTFN(2, ("channel %d pwr1 0x%04x pwr2 0x%04x\n", i + 1, 1889 sc->pwr1[i], sc->pwr2[i])); 1890 } 1891} 1892 1893/* 1894 * Send a command to the firmware. 1895 */ 1896static int 1897wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 1898{ 1899 struct wpi_tx_ring *ring = &sc->cmdq; 1900 struct wpi_tx_desc *desc; 1901 struct wpi_tx_cmd *cmd; 1902 1903 KASSERT(size <= sizeof cmd->data); 1904 1905 desc = &ring->desc[ring->cur]; 1906 cmd = &ring->cmd[ring->cur]; 1907 1908 cmd->code = code; 1909 cmd->flags = 0; 1910 cmd->qid = ring->qid; 1911 cmd->idx = ring->cur; 1912 memcpy(cmd->data, buf, size); 1913 1914 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 1915 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1916 ring->cur * sizeof (struct wpi_tx_cmd)); 1917 desc->segs[0].len = htole32(4 + size); 1918 1919 /* kick cmd ring */ 1920 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 1921 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1922 1923 return async ? 0 : tsleep(cmd, PCATCH, "wpicmd", hz); 1924} 1925 1926static int 1927wpi_wme_update(struct ieee80211com *ic) 1928{ 1929#define WPI_EXP2(v) htole16((1 << (v)) - 1) 1930#define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 1931 struct wpi_softc *sc = ic->ic_ifp->if_softc; 1932 const struct wmeParams *wmep; 1933 struct wpi_wme_setup wme; 1934 int ac; 1935 1936 /* don't override default WME values if WME is not actually enabled */ 1937 if (!(ic->ic_flags & IEEE80211_F_WME)) 1938 return 0; 1939 1940 wme.flags = 0; 1941 for (ac = 0; ac < WME_NUM_AC; ac++) { 1942 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 1943 wme.ac[ac].aifsn = wmep->wmep_aifsn; 1944 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 1945 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 1946 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 1947 1948 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 1949 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 1950 wme.ac[ac].cwmax, wme.ac[ac].txop)); 1951 } 1952 1953 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 1954#undef WPI_USEC 1955#undef WPI_EXP2 1956} 1957 1958/* 1959 * Configure h/w multi-rate retries. 1960 */ 1961static int 1962wpi_mrr_setup(struct wpi_softc *sc) 1963{ 1964 struct ieee80211com *ic = &sc->sc_ic; 1965 struct wpi_mrr_setup mrr; 1966 int i, error; 1967 1968 /* CCK rates (not used with 802.11a) */ 1969 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 1970 mrr.rates[i].flags = 0; 1971 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 1972 /* fallback to the immediate lower CCK rate (if any) */ 1973 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 1974 /* try one time at this rate before falling back to "next" */ 1975 mrr.rates[i].ntries = 1; 1976 } 1977 1978 /* OFDM rates (not used with 802.11b) */ 1979 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 1980 mrr.rates[i].flags = 0; 1981 mrr.rates[i].plcp = wpi_ridx_to_plcp[i]; 1982 /* fallback to the immediate lower rate (if any) */ 1983 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 1984 mrr.rates[i].next = (i == WPI_OFDM6) ? 1985 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 1986 WPI_OFDM6 : WPI_CCK2) : 1987 i - 1; 1988 /* try one time at this rate before falling back to "next" */ 1989 mrr.rates[i].ntries = 1; 1990 } 1991 1992 /* setup MRR for control frames */ 1993 mrr.which = htole32(WPI_MRR_CTL); 1994 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 1); 1995 if (error != 0) { 1996 aprint_error("%s: could not setup MRR for control frames\n", 1997 sc->sc_dev.dv_xname); 1998 return error; 1999 } 2000 2001 /* setup MRR for data frames */ 2002 mrr.which = htole32(WPI_MRR_DATA); 2003 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 1); 2004 if (error != 0) { 2005 aprint_error("%s: could not setup MRR for data frames\n", 2006 sc->sc_dev.dv_xname); 2007 return error; 2008 } 2009 2010 return 0; 2011} 2012 2013static void 2014wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2015{ 2016 struct wpi_cmd_led led; 2017 2018 led.which = which; 2019 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2020 led.off = off; 2021 led.on = on; 2022 2023 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2024} 2025 2026static void 2027wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2028{ 2029 struct wpi_cmd_tsf tsf; 2030 uint64_t val, mod; 2031 2032 memset(&tsf, 0, sizeof tsf); 2033 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2034 tsf.bintval = htole16(ni->ni_intval); 2035 tsf.lintval = htole16(10); 2036 2037 /* compute remaining time until next beacon */ 2038 val = (uint64_t)ni->ni_intval * 1024; /* msecs -> usecs */ 2039 mod = le64toh(tsf.tstamp) % val; 2040 tsf.binitval = htole32((uint32_t)(val - mod)); 2041 2042 DPRINTF(("TSF bintval=%u tstamp=%llu, init=%u\n", 2043 ni->ni_intval, le64toh(tsf.tstamp), (uint32_t)(val - mod))); 2044 2045 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2046 aprint_error("%s: could not enable TSF\n", sc->sc_dev.dv_xname); 2047} 2048 2049/* 2050 * Build a beacon frame that the firmware will broadcast periodically in 2051 * IBSS or HostAP modes. 2052 */ 2053static int 2054wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2055{ 2056 struct ieee80211com *ic = &sc->sc_ic; 2057 struct wpi_tx_ring *ring = &sc->cmdq; 2058 struct wpi_tx_desc *desc; 2059 struct wpi_tx_data *data; 2060 struct wpi_tx_cmd *cmd; 2061 struct wpi_cmd_beacon *bcn; 2062 struct ieee80211_beacon_offsets bo; 2063 struct mbuf *m0; 2064 int error; 2065 2066 desc = &ring->desc[ring->cur]; 2067 data = &ring->data[ring->cur]; 2068 2069 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2070 if (m0 == NULL) { 2071 aprint_error("%s: could not allocate beacon frame\n", 2072 sc->sc_dev.dv_xname); 2073 return ENOMEM; 2074 } 2075 2076 cmd = &ring->cmd[ring->cur]; 2077 cmd->code = WPI_CMD_SET_BEACON; 2078 cmd->flags = 0; 2079 cmd->qid = ring->qid; 2080 cmd->idx = ring->cur; 2081 2082 bcn = (struct wpi_cmd_beacon *)cmd->data; 2083 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2084 bcn->id = WPI_ID_BROADCAST; 2085 bcn->ofdm_mask = 0xff; 2086 bcn->cck_mask = 0x0f; 2087 bcn->lifetime = htole32(0xffffffff); 2088 bcn->len = htole16(m0->m_pkthdr.len); 2089 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2090 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2091 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2092 2093 /* save and trim IEEE802.11 header */ 2094 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2095 m_adj(m0, sizeof (struct ieee80211_frame)); 2096 2097 /* assume beacon frame is contiguous */ 2098 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 2099 BUS_DMA_READ | BUS_DMA_NOWAIT); 2100 if (error) { 2101 aprint_error("%s: could not map beacon\n", sc->sc_dev.dv_xname); 2102 m_freem(m0); 2103 return error; 2104 } 2105 2106 data->m = m0; 2107 2108 /* first scatter/gather segment is used by the beacon command */ 2109 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2110 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2111 ring->cur * sizeof (struct wpi_tx_cmd)); 2112 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2113 desc->segs[1].addr = htole32(data->map->dm_segs[0].ds_addr); 2114 desc->segs[1].len = htole32(data->map->dm_segs[0].ds_len); 2115 2116 /* kick cmd ring */ 2117 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2118 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2119 2120 return 0; 2121} 2122 2123static int 2124wpi_auth(struct wpi_softc *sc) 2125{ 2126 struct ieee80211com *ic = &sc->sc_ic; 2127 struct ieee80211_node *ni = ic->ic_bss; 2128 struct wpi_node_info node; 2129 int error; 2130 2131 /* update adapter's configuration */ 2132 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2133 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2134 sc->config.flags = htole32(WPI_CONFIG_TSF); 2135 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2136 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2137 WPI_CONFIG_24GHZ); 2138 } 2139 switch (ic->ic_curmode) { 2140 case IEEE80211_MODE_11A: 2141 sc->config.cck_mask = 0; 2142 sc->config.ofdm_mask = 0x15; 2143 break; 2144 case IEEE80211_MODE_11B: 2145 sc->config.cck_mask = 0x03; 2146 sc->config.ofdm_mask = 0; 2147 break; 2148 default: /* assume 802.11b/g */ 2149 sc->config.cck_mask = 0x0f; 2150 sc->config.ofdm_mask = 0x15; 2151 } 2152 2153 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2154 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2155 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2156 sizeof (struct wpi_config), 1); 2157 if (error != 0) { 2158 aprint_error("%s: could not configure\n", sc->sc_dev.dv_xname); 2159 return error; 2160 } 2161 2162 /* add default node */ 2163 memset(&node, 0, sizeof node); 2164 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2165 node.id = WPI_ID_BSS; 2166 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2167 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2168 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2169 if (error != 0) { 2170 aprint_error("%s: could not add BSS node\n", sc->sc_dev.dv_xname); 2171 return error; 2172 } 2173 2174 error = wpi_mrr_setup(sc); 2175 if (error != 0) { 2176 aprint_error("%s: could not setup MRR\n", sc->sc_dev.dv_xname); 2177 return error; 2178 } 2179 2180 return 0; 2181} 2182 2183/* 2184 * Send a scan request to the firmware. Since this command is huge, we map it 2185 * into a mbuf instead of using the pre-allocated set of commands. 2186 */ 2187static int 2188wpi_scan(struct wpi_softc *sc, uint16_t flags) 2189{ 2190 struct ieee80211com *ic = &sc->sc_ic; 2191 struct wpi_tx_ring *ring = &sc->cmdq; 2192 struct wpi_tx_desc *desc; 2193 struct wpi_tx_data *data; 2194 struct wpi_tx_cmd *cmd; 2195 struct wpi_scan_hdr *hdr; 2196 struct wpi_scan_chan *chan; 2197 struct ieee80211_frame *wh; 2198 struct ieee80211_rateset *rs; 2199 struct ieee80211_channel *c; 2200 enum ieee80211_phymode mode; 2201 uint8_t *frm; 2202 int nrates, pktlen, error; 2203 2204 desc = &ring->desc[ring->cur]; 2205 data = &ring->data[ring->cur]; 2206 2207 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 2208 if (data->m == NULL) { 2209 aprint_error("%s: could not allocate mbuf for scan command\n", 2210 sc->sc_dev.dv_xname); 2211 return ENOMEM; 2212 } 2213 2214 MCLGET(data->m, M_DONTWAIT); 2215 if (!(data->m->m_flags & M_EXT)) { 2216 m_freem(data->m); 2217 data->m = NULL; 2218 aprint_error("%s: could not allocate mbuf for scan command\n", 2219 sc->sc_dev.dv_xname); 2220 return ENOMEM; 2221 } 2222 2223 cmd = mtod(data->m, struct wpi_tx_cmd *); 2224 cmd->code = WPI_CMD_SCAN; 2225 cmd->flags = 0; 2226 cmd->qid = ring->qid; 2227 cmd->idx = ring->cur; 2228 2229 hdr = (struct wpi_scan_hdr *)cmd->data; 2230 memset(hdr, 0, sizeof (struct wpi_scan_hdr)); 2231 hdr->first = 1; 2232 /* 2233 * Move to the next channel if no packets are received within 5 msecs 2234 * after sending the probe request (this helps to reduce the duration 2235 * of active scans). 2236 */ 2237 hdr->quiet = htole16(5); /* timeout in milliseconds */ 2238 hdr->threshold = htole16(1); /* min # of packets */ 2239 2240 if (flags & IEEE80211_CHAN_A) { 2241 hdr->band = htole16(WPI_SCAN_5GHZ); 2242 /* send probe requests at 6Mbps */ 2243 hdr->rate = wpi_plcp_signal(12); 2244 } else { 2245 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2246 /* send probe requests at 1Mbps */ 2247 hdr->rate = wpi_plcp_signal(2); 2248 } 2249 hdr->id = WPI_ID_BROADCAST; 2250 hdr->mask = htole32(0xffffffff); 2251 hdr->magic1 = htole32(1 << 13); 2252 2253 hdr->esslen = ic->ic_des_esslen; 2254 memcpy(hdr->essid, ic->ic_des_essid, ic->ic_des_esslen); 2255 2256 /* 2257 * Build a probe request frame. Most of the following code is a 2258 * copy & paste of what is done in net80211. 2259 */ 2260 wh = (struct ieee80211_frame *)(hdr + 1); 2261 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2262 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2263 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2264 IEEE80211_ADDR_COPY(wh->i_addr1, etherbroadcastaddr); 2265 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2266 IEEE80211_ADDR_COPY(wh->i_addr3, etherbroadcastaddr); 2267 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2268 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2269 2270 frm = (uint8_t *)(wh + 1); 2271 2272 /* add essid IE */ 2273 *frm++ = IEEE80211_ELEMID_SSID; 2274 *frm++ = ic->ic_des_esslen; 2275 memcpy(frm, ic->ic_des_essid, ic->ic_des_esslen); 2276 frm += ic->ic_des_esslen; 2277 2278 mode = ieee80211_chan2mode(ic, ic->ic_ibss_chan); 2279 rs = &ic->ic_sup_rates[mode]; 2280 2281 /* add supported rates IE */ 2282 *frm++ = IEEE80211_ELEMID_RATES; 2283 nrates = rs->rs_nrates; 2284 if (nrates > IEEE80211_RATE_SIZE) 2285 nrates = IEEE80211_RATE_SIZE; 2286 *frm++ = nrates; 2287 memcpy(frm, rs->rs_rates, nrates); 2288 frm += nrates; 2289 2290 /* add supported xrates IE */ 2291 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2292 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2293 *frm++ = IEEE80211_ELEMID_XRATES; 2294 *frm++ = nrates; 2295 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2296 frm += nrates; 2297 } 2298 2299 /* add optionnal IE (usually an RSN IE) */ 2300 if (ic->ic_opt_ie != NULL) { 2301 memcpy(frm, ic->ic_opt_ie, ic->ic_opt_ie_len); 2302 frm += ic->ic_opt_ie_len; 2303 } 2304 2305 /* setup length of probe request */ 2306 hdr->pbrlen = htole16(frm - (uint8_t *)wh); 2307 2308 chan = (struct wpi_scan_chan *)frm; 2309 for (c = &ic->ic_channels[1]; 2310 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2311 if ((c->ic_flags & flags) != flags) 2312 continue; 2313 2314 chan->chan = ieee80211_chan2ieee(ic, c); 2315 chan->flags = (c->ic_flags & IEEE80211_CHAN_PASSIVE) ? 2316 0 : WPI_CHAN_ACTIVE; 2317 chan->magic = htole16(0x62ab); 2318 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2319 chan->active = htole16(10); 2320 chan->passive = htole16(110); 2321 } else { 2322 chan->active = htole16(20); 2323 chan->passive = htole16(120); 2324 } 2325 hdr->nchan++; 2326 chan++; 2327 2328 frm += sizeof (struct wpi_scan_chan); 2329 } 2330 2331 hdr->len = hdr->nchan * sizeof (struct wpi_scan_chan); 2332 pktlen = frm - mtod(data->m, uint8_t *); 2333 2334 error = bus_dmamap_load(sc->sc_dmat, data->map, cmd, pktlen, 2335 NULL, BUS_DMA_NOWAIT); 2336 if (error) { 2337 aprint_error("%s: could not map scan command\n", 2338 sc->sc_dev.dv_xname); 2339 m_freem(data->m); 2340 data->m = NULL; 2341 return error; 2342 } 2343 2344 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2345 desc->segs[0].addr = htole32(data->map->dm_segs[0].ds_addr); 2346 desc->segs[0].len = htole32(data->map->dm_segs[0].ds_len); 2347 2348 /* kick cmd ring */ 2349 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2350 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2351 2352 return 0; /* will be notified async. of failure/success */ 2353} 2354 2355static int 2356wpi_config(struct wpi_softc *sc) 2357{ 2358 struct ieee80211com *ic = &sc->sc_ic; 2359 struct ifnet *ifp = ic->ic_ifp; 2360 struct wpi_txpower txpower; 2361 struct wpi_power power; 2362 struct wpi_bluetooth bluetooth; 2363 struct wpi_node_info node; 2364 int error; 2365 2366 /* set Tx power for 2.4GHz channels (values read from EEPROM) */ 2367 memset(&txpower, 0, sizeof txpower); 2368 memcpy(txpower.pwr1, sc->pwr1, 14 * sizeof (uint16_t)); 2369 memcpy(txpower.pwr2, sc->pwr2, 14 * sizeof (uint16_t)); 2370 error = wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, 0); 2371 if (error != 0) { 2372 aprint_error("%s: could not set txpower\n", 2373 sc->sc_dev.dv_xname); 2374 return error; 2375 } 2376 2377 /* set power mode */ 2378 memset(&power, 0, sizeof power); 2379 power.flags = htole32(0x8); /* XXX */ 2380 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2381 if (error != 0) { 2382 aprint_error("%s: could not set power mode\n", 2383 sc->sc_dev.dv_xname); 2384 return error; 2385 } 2386 2387 /* configure bluetooth coexistence */ 2388 memset(&bluetooth, 0, sizeof bluetooth); 2389 bluetooth.flags = 3; 2390 bluetooth.lead = 0xaa; 2391 bluetooth.kill = 1; 2392 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2393 0); 2394 if (error != 0) { 2395 aprint_error( 2396 "%s: could not configure bluetooth coexistence\n", 2397 sc->sc_dev.dv_xname); 2398 return error; 2399 } 2400 2401 /* configure adapter */ 2402 memset(&sc->config, 0, sizeof (struct wpi_config)); 2403 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 2404 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2405 /*set default channel*/ 2406 sc->config.chan = ieee80211_chan2ieee(ic, ic->ic_ibss_chan); 2407 sc->config.flags = htole32(WPI_CONFIG_TSF); 2408 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_ibss_chan)) { 2409 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2410 WPI_CONFIG_24GHZ); 2411 } 2412 sc->config.filter = 0; 2413 switch (ic->ic_opmode) { 2414 case IEEE80211_M_STA: 2415 sc->config.mode = WPI_MODE_STA; 2416 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2417 break; 2418 case IEEE80211_M_IBSS: 2419 case IEEE80211_M_AHDEMO: 2420 sc->config.mode = WPI_MODE_IBSS; 2421 break; 2422 case IEEE80211_M_HOSTAP: 2423 sc->config.mode = WPI_MODE_HOSTAP; 2424 break; 2425 case IEEE80211_M_MONITOR: 2426 sc->config.mode = WPI_MODE_MONITOR; 2427 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2428 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2429 break; 2430 } 2431 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2432 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2433 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2434 sizeof (struct wpi_config), 0); 2435 if (error != 0) { 2436 aprint_error("%s: configure command failed\n", 2437 sc->sc_dev.dv_xname); 2438 return error; 2439 } 2440 2441 /* add broadcast node */ 2442 memset(&node, 0, sizeof node); 2443 IEEE80211_ADDR_COPY(node.bssid, etherbroadcastaddr); 2444 node.id = WPI_ID_BROADCAST; 2445 node.rate = wpi_plcp_signal(2); 2446 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2447 if (error != 0) { 2448 aprint_error("%s: could not add broadcast node\n", 2449 sc->sc_dev.dv_xname); 2450 return error; 2451 } 2452 2453 return 0; 2454} 2455 2456static void 2457wpi_stop_master(struct wpi_softc *sc) 2458{ 2459 uint32_t tmp; 2460 int ntries; 2461 2462 tmp = WPI_READ(sc, WPI_RESET); 2463 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER); 2464 2465 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2466 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2467 return; /* already asleep */ 2468 2469 for (ntries = 0; ntries < 100; ntries++) { 2470 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2471 break; 2472 DELAY(10); 2473 } 2474 if (ntries == 100) { 2475 aprint_error("%s: timeout waiting for master\n", 2476 sc->sc_dev.dv_xname); 2477 } 2478} 2479 2480static int 2481wpi_power_up(struct wpi_softc *sc) 2482{ 2483 uint32_t tmp; 2484 int ntries; 2485 2486 wpi_mem_lock(sc); 2487 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2488 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2489 wpi_mem_unlock(sc); 2490 2491 for (ntries = 0; ntries < 5000; ntries++) { 2492 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2493 break; 2494 DELAY(10); 2495 } 2496 if (ntries == 5000) { 2497 aprint_error("%s: timeout waiting for NIC to power up\n", 2498 sc->sc_dev.dv_xname); 2499 return ETIMEDOUT; 2500 } 2501 return 0; 2502} 2503 2504static int 2505wpi_reset(struct wpi_softc *sc) 2506{ 2507 uint32_t tmp; 2508 int ntries; 2509 2510 /* clear any pending interrupts */ 2511 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2512 2513 tmp = WPI_READ(sc, WPI_PLL_CTL); 2514 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2515 2516 tmp = WPI_READ(sc, WPI_CHICKEN); 2517 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2518 2519 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2520 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2521 2522 /* wait for clock stabilization */ 2523 for (ntries = 0; ntries < 1000; ntries++) { 2524 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2525 break; 2526 DELAY(10); 2527 } 2528 if (ntries == 1000) { 2529 aprint_error("%s: timeout waiting for clock stabilization\n", 2530 sc->sc_dev.dv_xname); 2531 return ETIMEDOUT; 2532 } 2533 2534 /* initialize EEPROM */ 2535 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2536 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2537 aprint_error("%s: EEPROM not found\n", sc->sc_dev.dv_xname); 2538 return EIO; 2539 } 2540 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2541 2542 return 0; 2543} 2544 2545static void 2546wpi_hw_config(struct wpi_softc *sc) 2547{ 2548 uint16_t val; 2549 uint32_t rev, hw; 2550 2551 /* voodoo from the Linux "driver".. */ 2552 hw = WPI_READ(sc, WPI_HWCONFIG); 2553 2554 rev = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_CLASS_REG); 2555 rev = PCI_REVISION(rev); 2556 if ((rev & 0xc0) == 0x40) 2557 hw |= WPI_HW_ALM_MB; 2558 else if (!(rev & 0x80)) 2559 hw |= WPI_HW_ALM_MM; 2560 2561 val = wpi_read_prom_word(sc, WPI_EEPROM_CAPABILITIES); 2562 if ((val & 0xff) == 0x80) 2563 hw |= WPI_HW_SKU_MRC; 2564 2565 val = wpi_read_prom_word(sc, WPI_EEPROM_REVISION); 2566 hw &= ~WPI_HW_REV_D; 2567 if ((val & 0xf0) == 0xd0) 2568 hw |= WPI_HW_REV_D; 2569 2570 val = wpi_read_prom_word(sc, WPI_EEPROM_TYPE); 2571 if ((val & 0xff) > 1) 2572 hw |= WPI_HW_TYPE_B; 2573 2574 DPRINTF(("setting h/w config %x\n", hw)); 2575 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2576} 2577 2578static int 2579wpi_init(struct ifnet *ifp) 2580{ 2581 struct wpi_softc *sc = ifp->if_softc; 2582 struct ieee80211com *ic = &sc->sc_ic; 2583 struct wpi_firmware_hdr hdr; 2584 const char *boot, *text, *data; 2585 firmware_handle_t fw; 2586 u_char *dfw; 2587 off_t size; 2588 size_t wsize; 2589 uint32_t tmp; 2590 int qid, ntries, error; 2591 2592 (void)wpi_reset(sc); 2593 2594 wpi_mem_lock(sc); 2595 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 2596 DELAY(20); 2597 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 2598 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 2599 wpi_mem_unlock(sc); 2600 2601 (void)wpi_power_up(sc); 2602 wpi_hw_config(sc); 2603 2604 /* init Rx ring */ 2605 wpi_mem_lock(sc); 2606 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 2607 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 2608 offsetof(struct wpi_shared, next)); 2609 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 2610 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 2611 wpi_mem_unlock(sc); 2612 2613 /* init Tx rings */ 2614 wpi_mem_lock(sc); 2615 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 2616 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 2617 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 2618 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 2619 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 2620 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 2621 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 2622 2623 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 2624 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 2625 2626 for (qid = 0; qid < 6; qid++) { 2627 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 2628 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 2629 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 2630 } 2631 wpi_mem_unlock(sc); 2632 2633 /* clear "radio off" and "disable command" bits (reversed logic) */ 2634 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 2635 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 2636 2637 /* clear any pending interrupts */ 2638 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2639 /* enable interrupts */ 2640 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 2641 2642 if ((error = firmware_open("if_wpi", "ipw3945.ucode", &fw)) != 0) { 2643 aprint_error("%s: could not read firmware file\n", 2644 sc->sc_dev.dv_xname); 2645 goto fail1; 2646 } 2647 2648 size = firmware_get_size(fw); 2649 2650 if (size < sizeof (struct wpi_firmware_hdr)) { 2651 aprint_error("%s: firmware file too short\n", 2652 sc->sc_dev.dv_xname); 2653 error = EINVAL; 2654 goto fail2; 2655 } 2656 2657 if ((error = firmware_read(fw, 0, &hdr, 2658 sizeof (struct wpi_firmware_hdr))) != 0) { 2659 aprint_error("%s: can't get firmware header\n", 2660 sc->sc_dev.dv_xname); 2661 goto fail2; 2662 } 2663 2664 wsize = sizeof (struct wpi_firmware_hdr) + le32toh(hdr.textsz) + 2665 le32toh(hdr.datasz) + le32toh(hdr.bootsz); 2666 2667 if (size < wsize) { 2668 aprint_error("%s: fw file too short: should be %d bytes\n", 2669 sc->sc_dev.dv_xname, wsize); 2670 error = EINVAL; 2671 goto fail2; 2672 } 2673 2674 dfw = firmware_malloc(size); 2675 if (dfw == NULL) { 2676 aprint_error("%s: not enough memory to stock firmware\n", 2677 sc->sc_dev.dv_xname); 2678 error = ENOMEM; 2679 goto fail2; 2680 } 2681 2682 if ((error = firmware_read(fw, 0, dfw, size)) != 0) { 2683 aprint_error("%s: can't get firmware\n", 2684 sc->sc_dev.dv_xname); 2685 goto fail2; 2686 } 2687 2688 /* firmware image layout: |HDR|<--TEXT-->|<--DATA-->|<--BOOT-->| */ 2689 text = dfw + sizeof (struct wpi_firmware_hdr); 2690 data = text + le32toh(hdr.textsz); 2691 boot = data + le32toh(hdr.datasz); 2692 2693 /* load firmware boot code into NIC */ 2694 error = wpi_load_microcode(sc, boot, le32toh(hdr.bootsz)); 2695 if (error != 0) { 2696 aprint_error("%s: could not load microcode\n", sc->sc_dev.dv_xname); 2697 goto fail3; 2698 } 2699 2700 /* load firmware .text segment into NIC */ 2701 error = wpi_load_firmware(sc, WPI_FW_TEXT, text, le32toh(hdr.textsz)); 2702 if (error != 0) { 2703 aprint_error("%s: could not load firmware\n", 2704 sc->sc_dev.dv_xname); 2705 goto fail3; 2706 } 2707 2708 /* load firmware .data segment into NIC */ 2709 error = wpi_load_firmware(sc, WPI_FW_DATA, data, le32toh(hdr.datasz)); 2710 if (error != 0) { 2711 aprint_error("%s: could not load firmware\n", 2712 sc->sc_dev.dv_xname); 2713 goto fail3; 2714 } 2715 2716 firmware_free(dfw, 0); 2717 firmware_close(fw); 2718 2719 /* now press "execute" ;-) */ 2720 tmp = WPI_READ(sc, WPI_RESET); 2721 tmp &= ~(WPI_MASTER_DISABLED | WPI_STOP_MASTER | WPI_NEVO_RESET); 2722 WPI_WRITE(sc, WPI_RESET, tmp); 2723 2724 /* ..and wait at most one second for adapter to initialize */ 2725 if ((error = tsleep(sc, PCATCH, "wpiinit", hz)) != 0) { 2726 /* this isn't what was supposed to happen.. */ 2727 aprint_error("%s: timeout waiting for adapter to initialize\n", 2728 sc->sc_dev.dv_xname); 2729 goto fail1; 2730 } 2731 2732 /* wait for thermal sensors to calibrate */ 2733 for (ntries = 0; ntries < 1000; ntries++) { 2734 if (WPI_READ(sc, WPI_TEMPERATURE) != 0) 2735 break; 2736 DELAY(10); 2737 } 2738 if (ntries == 1000) { 2739 aprint_error("%s: timeout waiting for thermal sensors calibration\n", 2740 sc->sc_dev.dv_xname); 2741 error = ETIMEDOUT; 2742 goto fail1; 2743 } 2744 DPRINTF(("temperature %d\n", (int)WPI_READ(sc, WPI_TEMPERATURE))); 2745 2746 if ((error = wpi_config(sc)) != 0) { 2747 aprint_error("%s: could not configure device\n", 2748 sc->sc_dev.dv_xname); 2749 goto fail1; 2750 } 2751 2752 ifp->if_flags &= ~IFF_OACTIVE; 2753 ifp->if_flags |= IFF_RUNNING; 2754 2755 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2756 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 2757 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2758 } 2759 else 2760 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2761 2762 return 0; 2763 2764fail3: firmware_free(dfw, 0); 2765fail2: firmware_close(fw); 2766fail1: wpi_stop(ifp, 1); 2767 return error; 2768} 2769 2770 2771static void 2772wpi_stop(struct ifnet *ifp, int disable __unused) 2773{ 2774 struct wpi_softc *sc = ifp->if_softc; 2775 struct ieee80211com *ic = &sc->sc_ic; 2776 uint32_t tmp; 2777 int ac; 2778 2779 ifp->if_timer = sc->sc_tx_timer = 0; 2780 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2781 2782 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2783 2784 /* disable interrupts */ 2785 WPI_WRITE(sc, WPI_MASK, 0); 2786 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 2787 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 2788 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 2789 2790 wpi_mem_lock(sc); 2791 wpi_mem_write(sc, WPI_MEM_MODE, 0); 2792 wpi_mem_unlock(sc); 2793 2794 /* reset all Tx rings */ 2795 for (ac = 0; ac < 4; ac++) 2796 wpi_reset_tx_ring(sc, &sc->txq[ac]); 2797 wpi_reset_tx_ring(sc, &sc->cmdq); 2798 wpi_reset_tx_ring(sc, &sc->svcq); 2799 2800 /* reset Rx ring */ 2801 wpi_reset_rx_ring(sc, &sc->rxq); 2802 2803 wpi_mem_lock(sc); 2804 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 2805 wpi_mem_unlock(sc); 2806 2807 DELAY(5); 2808 2809 wpi_stop_master(sc); 2810 2811 tmp = WPI_READ(sc, WPI_RESET); 2812 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 2813} 2814 2815static void 2816wpi_iter_func(void *arg, struct ieee80211_node *ni) 2817{ 2818 struct wpi_softc *sc = arg; 2819 struct wpi_node *wn = (struct wpi_node *)ni; 2820 2821 ieee80211_amrr_choose(&sc->amrr, ni, &wn->amn); 2822} 2823 2824static void 2825wpi_amrr_timeout(void *arg) 2826{ 2827 struct wpi_softc *sc = arg; 2828 struct ieee80211com *ic = &sc->sc_ic; 2829 2830 if (ic->ic_opmode == IEEE80211_M_STA) 2831 wpi_iter_func(sc, ic->ic_bss); 2832 else 2833 ieee80211_iterate_nodes(&ic->ic_sta, wpi_iter_func, sc); 2834 2835 callout_reset(&sc->amrr_ch, hz, wpi_amrr_timeout, sc); 2836} 2837 2838static void 2839wpi_newassoc(struct ieee80211_node *ni, int isnew) 2840{ 2841 struct wpi_softc *sc = ni->ni_ic->ic_ifp->if_softc; 2842 int i; 2843 2844 ieee80211_amrr_node_init(&sc->amrr, &((struct wpi_node *)ni)->amn); 2845 /* set rate to some reasonable initial value */ 2846 for (i = ni->ni_rates.rs_nrates - 1; 2847 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2848 i--); 2849 ni->ni_txrate = i; 2850} 2851