1/*- 2 * Copyright (c) 2006,2007 3 * Damien Bergamini <damien.bergamini@free.fr> 4 * Benjamin Close <Benjamin.Close@clearchain.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19#define VERSION "20071127" 20 21#include <sys/cdefs.h> 22__FBSDID("$FreeBSD$"); 23 24/* 25 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 26 * 27 * The 3945ABG network adapter doesn't use traditional hardware as 28 * many other adaptors do. Instead at run time the eeprom is set into a known 29 * state and told to load boot firmware. The boot firmware loads an init and a 30 * main binary firmware image into SRAM on the card via DMA. 31 * Once the firmware is loaded, the driver/hw then 32 * communicate by way of circular dma rings via the SRAM to the firmware. 33 * 34 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 35 * The 4 tx data rings allow for prioritization QoS. 36 * 37 * The rx data ring consists of 32 dma buffers. Two registers are used to 38 * indicate where in the ring the driver and the firmware are up to. The 39 * driver sets the initial read index (reg1) and the initial write index (reg2), 40 * the firmware updates the read index (reg1) on rx of a packet and fires an 41 * interrupt. The driver then processes the buffers starting at reg1 indicating 42 * to the firmware which buffers have been accessed by updating reg2. At the 43 * same time allocating new memory for the processed buffer. 44 * 45 * A similar thing happens with the tx rings. The difference is the firmware 46 * stop processing buffers once the queue is full and until confirmation 47 * of a successful transmition (tx_intr) has occurred. 48 * 49 * The command ring operates in the same manner as the tx queues. 50 * 51 * All communication direct to the card (ie eeprom) is classed as Stage1 52 * communication 53 * 54 * All communication via the firmware to the card is classed as State2. 55 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 56 * firmware. The bootstrap firmware and runtime firmware are loaded 57 * from host memory via dma to the card then told to execute. From this point 58 * on the majority of communications between the driver and the card goes 59 * via the firmware. 60 */ 61 62#include <sys/param.h> 63#include <sys/sysctl.h> 64#include <sys/sockio.h> 65#include <sys/mbuf.h> 66#include <sys/kernel.h> 67#include <sys/socket.h> 68#include <sys/systm.h> 69#include <sys/malloc.h> 70#include <sys/queue.h> 71#include <sys/taskqueue.h> 72#include <sys/module.h> 73#include <sys/bus.h> 74#include <sys/endian.h> 75#include <sys/linker.h> 76#include <sys/firmware.h> 77 78#include <machine/bus.h> 79#include <machine/resource.h> 80#include <sys/rman.h> 81 82#include <dev/pci/pcireg.h> 83#include <dev/pci/pcivar.h> 84 85#include <net/bpf.h> 86#include <net/if.h> 87#include <net/if_arp.h> 88#include <net/ethernet.h> 89#include <net/if_dl.h> 90#include <net/if_media.h> 91#include <net/if_types.h> 92 93#include <net80211/ieee80211_var.h> 94#include <net80211/ieee80211_radiotap.h> 95#include <net80211/ieee80211_regdomain.h> 96#include <net80211/ieee80211_ratectl.h> 97 98#include <netinet/in.h> 99#include <netinet/in_systm.h> 100#include <netinet/in_var.h> 101#include <netinet/ip.h> 102#include <netinet/if_ether.h> 103 104#include <dev/wpi/if_wpireg.h> 105#include <dev/wpi/if_wpivar.h> 106 107#define WPI_DEBUG 108 109#ifdef WPI_DEBUG 110#define DPRINTF(x) do { if (wpi_debug != 0) printf x; } while (0) 111#define DPRINTFN(n, x) do { if (wpi_debug & n) printf x; } while (0) 112#define WPI_DEBUG_SET (wpi_debug != 0) 113 114enum { 115 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ 116 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ 117 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ 118 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ 119 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ 120 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ 121 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ 122 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ 123 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ 124 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ 125 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ 126 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ 127 WPI_DEBUG_ANY = 0xffffffff 128}; 129 130static int wpi_debug = 0; 131SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level"); 132TUNABLE_INT("debug.wpi", &wpi_debug); 133 134#else 135#define DPRINTF(x) 136#define DPRINTFN(n, x) 137#define WPI_DEBUG_SET 0 138#endif 139 140struct wpi_ident { 141 uint16_t vendor; 142 uint16_t device; 143 uint16_t subdevice; 144 const char *name; 145}; 146 147static const struct wpi_ident wpi_ident_table[] = { 148 /* The below entries support ABG regardless of the subid */ 149 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 150 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 151 /* The below entries only support BG */ 152 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 153 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 154 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 155 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 156 { 0, 0, 0, NULL } 157}; 158 159static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 160 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 161 const uint8_t [IEEE80211_ADDR_LEN], 162 const uint8_t [IEEE80211_ADDR_LEN]); 163static void wpi_vap_delete(struct ieee80211vap *); 164static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 165 void **, bus_size_t, bus_size_t, int); 166static void wpi_dma_contig_free(struct wpi_dma_info *); 167static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 168static int wpi_alloc_shared(struct wpi_softc *); 169static void wpi_free_shared(struct wpi_softc *); 170static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 171static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 172static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 173static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 174 int, int); 175static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 176static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 177static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 178static void wpi_mem_lock(struct wpi_softc *); 179static void wpi_mem_unlock(struct wpi_softc *); 180static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 181static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 182static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 183 const uint32_t *, int); 184static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 185static int wpi_alloc_fwmem(struct wpi_softc *); 186static void wpi_free_fwmem(struct wpi_softc *); 187static int wpi_load_firmware(struct wpi_softc *); 188static void wpi_unload_firmware(struct wpi_softc *); 189static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 190static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 191 struct wpi_rx_data *); 192static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 193static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 194static void wpi_notif_intr(struct wpi_softc *); 195static void wpi_intr(void *); 196static uint8_t wpi_plcp_signal(int); 197static void wpi_watchdog(void *); 198static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 199 struct ieee80211_node *, int); 200static void wpi_start(struct ifnet *); 201static void wpi_start_locked(struct ifnet *); 202static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 203 const struct ieee80211_bpf_params *); 204static void wpi_scan_start(struct ieee80211com *); 205static void wpi_scan_end(struct ieee80211com *); 206static void wpi_set_channel(struct ieee80211com *); 207static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 208static void wpi_scan_mindwell(struct ieee80211_scan_state *); 209static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 210static void wpi_read_eeprom(struct wpi_softc *, 211 uint8_t macaddr[IEEE80211_ADDR_LEN]); 212static void wpi_read_eeprom_channels(struct wpi_softc *, int); 213static void wpi_read_eeprom_group(struct wpi_softc *, int); 214static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 215static int wpi_wme_update(struct ieee80211com *); 216static int wpi_mrr_setup(struct wpi_softc *); 217static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 218static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 219#if 0 220static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 221#endif 222static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 223static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 224static int wpi_scan(struct wpi_softc *); 225static int wpi_config(struct wpi_softc *); 226static void wpi_stop_master(struct wpi_softc *); 227static int wpi_power_up(struct wpi_softc *); 228static int wpi_reset(struct wpi_softc *); 229static void wpi_hwreset(void *, int); 230static void wpi_rfreset(void *, int); 231static void wpi_hw_config(struct wpi_softc *); 232static void wpi_init(void *); 233static void wpi_init_locked(struct wpi_softc *, int); 234static void wpi_stop(struct wpi_softc *); 235static void wpi_stop_locked(struct wpi_softc *); 236 237static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 238 int); 239static void wpi_calib_timeout(void *); 240static void wpi_power_calibration(struct wpi_softc *, int); 241static int wpi_get_power_index(struct wpi_softc *, 242 struct wpi_power_group *, struct ieee80211_channel *, int); 243#ifdef WPI_DEBUG 244static const char *wpi_cmd_str(int); 245#endif 246static int wpi_probe(device_t); 247static int wpi_attach(device_t); 248static int wpi_detach(device_t); 249static int wpi_shutdown(device_t); 250static int wpi_suspend(device_t); 251static int wpi_resume(device_t); 252 253 254static device_method_t wpi_methods[] = { 255 /* Device interface */ 256 DEVMETHOD(device_probe, wpi_probe), 257 DEVMETHOD(device_attach, wpi_attach), 258 DEVMETHOD(device_detach, wpi_detach), 259 DEVMETHOD(device_shutdown, wpi_shutdown), 260 DEVMETHOD(device_suspend, wpi_suspend), 261 DEVMETHOD(device_resume, wpi_resume), 262 263 { 0, 0 } 264}; 265 266static driver_t wpi_driver = { 267 "wpi", 268 wpi_methods, 269 sizeof (struct wpi_softc) 270}; 271 272static devclass_t wpi_devclass; 273 274DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0); 275 276MODULE_VERSION(wpi, 1); 277 278static const uint8_t wpi_ridx_to_plcp[] = { 279 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 280 /* R1-R4 (ral/ural is R4-R1) */ 281 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 282 /* CCK: device-dependent */ 283 10, 20, 55, 110 284}; 285static const uint8_t wpi_ridx_to_rate[] = { 286 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 287 2, 4, 11, 22 /*CCK */ 288}; 289 290 291static int 292wpi_probe(device_t dev) 293{ 294 const struct wpi_ident *ident; 295 296 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 297 if (pci_get_vendor(dev) == ident->vendor && 298 pci_get_device(dev) == ident->device) { 299 device_set_desc(dev, ident->name); 300 return 0; 301 } 302 } 303 return ENXIO; 304} 305 306/** 307 * Load the firmare image from disk to the allocated dma buffer. 308 * we also maintain the reference to the firmware pointer as there 309 * is times where we may need to reload the firmware but we are not 310 * in a context that can access the filesystem (ie taskq cause by restart) 311 * 312 * @return 0 on success, an errno on failure 313 */ 314static int 315wpi_load_firmware(struct wpi_softc *sc) 316{ 317 const struct firmware *fp; 318 struct wpi_dma_info *dma = &sc->fw_dma; 319 const struct wpi_firmware_hdr *hdr; 320 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 321 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 322 int error; 323 324 DPRINTFN(WPI_DEBUG_FIRMWARE, 325 ("Attempting Loading Firmware from wpi_fw module\n")); 326 327 WPI_UNLOCK(sc); 328 329 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 330 device_printf(sc->sc_dev, 331 "could not load firmware image 'wpifw'\n"); 332 error = ENOENT; 333 WPI_LOCK(sc); 334 goto fail; 335 } 336 337 fp = sc->fw_fp; 338 339 WPI_LOCK(sc); 340 341 /* Validate the firmware is minimum a particular version */ 342 if (fp->version < WPI_FW_MINVERSION) { 343 device_printf(sc->sc_dev, 344 "firmware version is too old. Need %d, got %d\n", 345 WPI_FW_MINVERSION, 346 fp->version); 347 error = ENXIO; 348 goto fail; 349 } 350 351 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 352 device_printf(sc->sc_dev, 353 "firmware file too short: %zu bytes\n", fp->datasize); 354 error = ENXIO; 355 goto fail; 356 } 357 358 hdr = (const struct wpi_firmware_hdr *)fp->data; 359 360 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 361 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 362 363 rtextsz = le32toh(hdr->rtextsz); 364 rdatasz = le32toh(hdr->rdatasz); 365 itextsz = le32toh(hdr->itextsz); 366 idatasz = le32toh(hdr->idatasz); 367 btextsz = le32toh(hdr->btextsz); 368 369 /* check that all firmware segments are present */ 370 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 371 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 372 device_printf(sc->sc_dev, 373 "firmware file too short: %zu bytes\n", fp->datasize); 374 error = ENXIO; /* XXX appropriate error code? */ 375 goto fail; 376 } 377 378 /* get pointers to firmware segments */ 379 rtext = (const uint8_t *)(hdr + 1); 380 rdata = rtext + rtextsz; 381 itext = rdata + rdatasz; 382 idata = itext + itextsz; 383 btext = idata + idatasz; 384 385 DPRINTFN(WPI_DEBUG_FIRMWARE, 386 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 387 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 388 (le32toh(hdr->version) & 0xff000000) >> 24, 389 (le32toh(hdr->version) & 0x00ff0000) >> 16, 390 (le32toh(hdr->version) & 0x0000ffff), 391 rtextsz, rdatasz, 392 itextsz, idatasz, btextsz)); 393 394 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 395 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 396 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 397 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 398 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 399 400 /* sanity checks */ 401 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 402 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 403 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 404 idatasz > WPI_FW_INIT_DATA_MAXSZ || 405 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 406 (btextsz & 3) != 0) { 407 device_printf(sc->sc_dev, "firmware invalid\n"); 408 error = EINVAL; 409 goto fail; 410 } 411 412 /* copy initialization images into pre-allocated DMA-safe memory */ 413 memcpy(dma->vaddr, idata, idatasz); 414 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 415 416 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 417 418 /* tell adapter where to find initialization images */ 419 wpi_mem_lock(sc); 420 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 421 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 422 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 423 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 424 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 425 wpi_mem_unlock(sc); 426 427 /* load firmware boot code */ 428 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 429 device_printf(sc->sc_dev, "Failed to load microcode\n"); 430 goto fail; 431 } 432 433 /* now press "execute" */ 434 WPI_WRITE(sc, WPI_RESET, 0); 435 436 /* wait at most one second for the first alive notification */ 437 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 438 device_printf(sc->sc_dev, 439 "timeout waiting for adapter to initialize\n"); 440 goto fail; 441 } 442 443 /* copy runtime images into pre-allocated DMA-sage memory */ 444 memcpy(dma->vaddr, rdata, rdatasz); 445 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 446 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 447 448 /* tell adapter where to find runtime images */ 449 wpi_mem_lock(sc); 450 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 451 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 452 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 453 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 454 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 455 wpi_mem_unlock(sc); 456 457 /* wait at most one second for the first alive notification */ 458 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 459 device_printf(sc->sc_dev, 460 "timeout waiting for adapter to initialize2\n"); 461 goto fail; 462 } 463 464 DPRINTFN(WPI_DEBUG_FIRMWARE, 465 ("Firmware loaded to driver successfully\n")); 466 return error; 467fail: 468 wpi_unload_firmware(sc); 469 return error; 470} 471 472/** 473 * Free the referenced firmware image 474 */ 475static void 476wpi_unload_firmware(struct wpi_softc *sc) 477{ 478 479 if (sc->fw_fp) { 480 WPI_UNLOCK(sc); 481 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 482 WPI_LOCK(sc); 483 sc->fw_fp = NULL; 484 } 485} 486 487static int 488wpi_attach(device_t dev) 489{ 490 struct wpi_softc *sc = device_get_softc(dev); 491 struct ifnet *ifp; 492 struct ieee80211com *ic; 493 int ac, error, supportsa = 1; 494 uint32_t tmp; 495 const struct wpi_ident *ident; 496 uint8_t macaddr[IEEE80211_ADDR_LEN]; 497 498 sc->sc_dev = dev; 499 500 if (bootverbose || WPI_DEBUG_SET) 501 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 502 503 /* 504 * Some card's only support 802.11b/g not a, check to see if 505 * this is one such card. A 0x0 in the subdevice table indicates 506 * the entire subdevice range is to be ignored. 507 */ 508 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 509 if (ident->subdevice && 510 pci_get_subdevice(dev) == ident->subdevice) { 511 supportsa = 0; 512 break; 513 } 514 } 515 516 /* Create the tasks that can be queued */ 517 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc); 518 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc); 519 520 WPI_LOCK_INIT(sc); 521 522 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 523 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 524 525 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 526 device_printf(dev, "chip is in D%d power mode " 527 "-- setting to D0\n", pci_get_powerstate(dev)); 528 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 529 } 530 531 /* disable the retry timeout register */ 532 pci_write_config(dev, 0x41, 0, 1); 533 534 /* enable bus-mastering */ 535 pci_enable_busmaster(dev); 536 537 sc->mem_rid = PCIR_BAR(0); 538 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 539 RF_ACTIVE); 540 if (sc->mem == NULL) { 541 device_printf(dev, "could not allocate memory resource\n"); 542 error = ENOMEM; 543 goto fail; 544 } 545 546 sc->sc_st = rman_get_bustag(sc->mem); 547 sc->sc_sh = rman_get_bushandle(sc->mem); 548 549 sc->irq_rid = 0; 550 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 551 RF_ACTIVE | RF_SHAREABLE); 552 if (sc->irq == NULL) { 553 device_printf(dev, "could not allocate interrupt resource\n"); 554 error = ENOMEM; 555 goto fail; 556 } 557 558 /* 559 * Allocate DMA memory for firmware transfers. 560 */ 561 if ((error = wpi_alloc_fwmem(sc)) != 0) { 562 printf(": could not allocate firmware memory\n"); 563 error = ENOMEM; 564 goto fail; 565 } 566 567 /* 568 * Put adapter into a known state. 569 */ 570 if ((error = wpi_reset(sc)) != 0) { 571 device_printf(dev, "could not reset adapter\n"); 572 goto fail; 573 } 574 575 wpi_mem_lock(sc); 576 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 577 if (bootverbose || WPI_DEBUG_SET) 578 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 579 580 wpi_mem_unlock(sc); 581 582 /* Allocate shared page */ 583 if ((error = wpi_alloc_shared(sc)) != 0) { 584 device_printf(dev, "could not allocate shared page\n"); 585 goto fail; 586 } 587 588 /* tx data queues - 4 for QoS purposes */ 589 for (ac = 0; ac < WME_NUM_AC; ac++) { 590 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 591 if (error != 0) { 592 device_printf(dev, "could not allocate Tx ring %d\n",ac); 593 goto fail; 594 } 595 } 596 597 /* command queue to talk to the card's firmware */ 598 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 599 if (error != 0) { 600 device_printf(dev, "could not allocate command ring\n"); 601 goto fail; 602 } 603 604 /* receive data queue */ 605 error = wpi_alloc_rx_ring(sc, &sc->rxq); 606 if (error != 0) { 607 device_printf(dev, "could not allocate Rx ring\n"); 608 goto fail; 609 } 610 611 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 612 if (ifp == NULL) { 613 device_printf(dev, "can not if_alloc()\n"); 614 error = ENOMEM; 615 goto fail; 616 } 617 ic = ifp->if_l2com; 618 619 ic->ic_ifp = ifp; 620 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 621 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 622 623 /* set device capabilities */ 624 ic->ic_caps = 625 IEEE80211_C_STA /* station mode supported */ 626 | IEEE80211_C_MONITOR /* monitor mode supported */ 627 | IEEE80211_C_TXPMGT /* tx power management */ 628 | IEEE80211_C_SHSLOT /* short slot time supported */ 629 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 630 | IEEE80211_C_WPA /* 802.11i */ 631/* XXX looks like WME is partly supported? */ 632#if 0 633 | IEEE80211_C_IBSS /* IBSS mode support */ 634 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 635 | IEEE80211_C_WME /* 802.11e */ 636 | IEEE80211_C_HOSTAP /* Host access point mode */ 637#endif 638 ; 639 640 /* 641 * Read in the eeprom and also setup the channels for 642 * net80211. We don't set the rates as net80211 does this for us 643 */ 644 wpi_read_eeprom(sc, macaddr); 645 646 if (bootverbose || WPI_DEBUG_SET) { 647 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 648 device_printf(sc->sc_dev, "Hardware Type: %c\n", 649 sc->type > 1 ? 'B': '?'); 650 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 651 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 652 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 653 supportsa ? "does" : "does not"); 654 655 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 656 what sc->rev really represents - benjsc 20070615 */ 657 } 658 659 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 660 ifp->if_softc = sc; 661 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 662 ifp->if_init = wpi_init; 663 ifp->if_ioctl = wpi_ioctl; 664 ifp->if_start = wpi_start; 665 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 666 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 667 IFQ_SET_READY(&ifp->if_snd); 668 669 ieee80211_ifattach(ic, macaddr); 670 /* override default methods */ 671 ic->ic_raw_xmit = wpi_raw_xmit; 672 ic->ic_wme.wme_update = wpi_wme_update; 673 ic->ic_scan_start = wpi_scan_start; 674 ic->ic_scan_end = wpi_scan_end; 675 ic->ic_set_channel = wpi_set_channel; 676 ic->ic_scan_curchan = wpi_scan_curchan; 677 ic->ic_scan_mindwell = wpi_scan_mindwell; 678 679 ic->ic_vap_create = wpi_vap_create; 680 ic->ic_vap_delete = wpi_vap_delete; 681 682 ieee80211_radiotap_attach(ic, 683 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 684 WPI_TX_RADIOTAP_PRESENT, 685 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 686 WPI_RX_RADIOTAP_PRESENT); 687 688 /* 689 * Hook our interrupt after all initialization is complete. 690 */ 691 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 692 NULL, wpi_intr, sc, &sc->sc_ih); 693 if (error != 0) { 694 device_printf(dev, "could not set up interrupt\n"); 695 goto fail; 696 } 697 698 if (bootverbose) 699 ieee80211_announce(ic); 700#ifdef XXX_DEBUG 701 ieee80211_announce_channels(ic); 702#endif 703 return 0; 704 705fail: wpi_detach(dev); 706 return ENXIO; 707} 708 709static int 710wpi_detach(device_t dev) 711{ 712 struct wpi_softc *sc = device_get_softc(dev); 713 struct ifnet *ifp = sc->sc_ifp; 714 struct ieee80211com *ic; 715 int ac; 716 717 if (ifp != NULL) { 718 ic = ifp->if_l2com; 719 720 ieee80211_draintask(ic, &sc->sc_restarttask); 721 ieee80211_draintask(ic, &sc->sc_radiotask); 722 wpi_stop(sc); 723 callout_drain(&sc->watchdog_to); 724 callout_drain(&sc->calib_to); 725 ieee80211_ifdetach(ic); 726 } 727 728 WPI_LOCK(sc); 729 if (sc->txq[0].data_dmat) { 730 for (ac = 0; ac < WME_NUM_AC; ac++) 731 wpi_free_tx_ring(sc, &sc->txq[ac]); 732 733 wpi_free_tx_ring(sc, &sc->cmdq); 734 wpi_free_rx_ring(sc, &sc->rxq); 735 wpi_free_shared(sc); 736 } 737 738 if (sc->fw_fp != NULL) { 739 wpi_unload_firmware(sc); 740 } 741 742 if (sc->fw_dma.tag) 743 wpi_free_fwmem(sc); 744 WPI_UNLOCK(sc); 745 746 if (sc->irq != NULL) { 747 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 748 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 749 } 750 751 if (sc->mem != NULL) 752 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 753 754 if (ifp != NULL) 755 if_free(ifp); 756 757 WPI_LOCK_DESTROY(sc); 758 759 return 0; 760} 761 762static struct ieee80211vap * 763wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 764 enum ieee80211_opmode opmode, int flags, 765 const uint8_t bssid[IEEE80211_ADDR_LEN], 766 const uint8_t mac[IEEE80211_ADDR_LEN]) 767{ 768 struct wpi_vap *wvp; 769 struct ieee80211vap *vap; 770 771 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 772 return NULL; 773 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 774 M_80211_VAP, M_NOWAIT | M_ZERO); 775 if (wvp == NULL) 776 return NULL; 777 vap = &wvp->vap; 778 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 779 /* override with driver methods */ 780 wvp->newstate = vap->iv_newstate; 781 vap->iv_newstate = wpi_newstate; 782 783 ieee80211_ratectl_init(vap); 784 /* complete setup */ 785 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 786 ic->ic_opmode = opmode; 787 return vap; 788} 789 790static void 791wpi_vap_delete(struct ieee80211vap *vap) 792{ 793 struct wpi_vap *wvp = WPI_VAP(vap); 794 795 ieee80211_ratectl_deinit(vap); 796 ieee80211_vap_detach(vap); 797 free(wvp, M_80211_VAP); 798} 799 800static void 801wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 802{ 803 if (error != 0) 804 return; 805 806 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 807 808 *(bus_addr_t *)arg = segs[0].ds_addr; 809} 810 811/* 812 * Allocates a contiguous block of dma memory of the requested size and 813 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 814 * allocations greater than 4096 may fail. Hence if the requested alignment is 815 * greater we allocate 'alignment' size extra memory and shift the vaddr and 816 * paddr after the dma load. This bypasses the problem at the cost of a little 817 * more memory. 818 */ 819static int 820wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 821 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 822{ 823 int error; 824 bus_size_t align; 825 bus_size_t reqsize; 826 827 DPRINTFN(WPI_DEBUG_DMA, 828 ("Size: %zd - alignment %zd\n", size, alignment)); 829 830 dma->size = size; 831 dma->tag = NULL; 832 833 if (alignment > 4096) { 834 align = PAGE_SIZE; 835 reqsize = size + alignment; 836 } else { 837 align = alignment; 838 reqsize = size; 839 } 840 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 841 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 842 NULL, NULL, reqsize, 843 1, reqsize, flags, 844 NULL, NULL, &dma->tag); 845 if (error != 0) { 846 device_printf(sc->sc_dev, 847 "could not create shared page DMA tag\n"); 848 goto fail; 849 } 850 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 851 flags | BUS_DMA_ZERO, &dma->map); 852 if (error != 0) { 853 device_printf(sc->sc_dev, 854 "could not allocate shared page DMA memory\n"); 855 goto fail; 856 } 857 858 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 859 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 860 861 /* Save the original pointers so we can free all the memory */ 862 dma->paddr = dma->paddr_start; 863 dma->vaddr = dma->vaddr_start; 864 865 /* 866 * Check the alignment and increment by 4096 until we get the 867 * requested alignment. Fail if can't obtain the alignment 868 * we requested. 869 */ 870 if ((dma->paddr & (alignment -1 )) != 0) { 871 int i; 872 873 for (i = 0; i < alignment / 4096; i++) { 874 if ((dma->paddr & (alignment - 1 )) == 0) 875 break; 876 dma->paddr += 4096; 877 dma->vaddr += 4096; 878 } 879 if (i == alignment / 4096) { 880 device_printf(sc->sc_dev, 881 "alignment requirement was not satisfied\n"); 882 goto fail; 883 } 884 } 885 886 if (error != 0) { 887 device_printf(sc->sc_dev, 888 "could not load shared page DMA map\n"); 889 goto fail; 890 } 891 892 if (kvap != NULL) 893 *kvap = dma->vaddr; 894 895 return 0; 896 897fail: 898 wpi_dma_contig_free(dma); 899 return error; 900} 901 902static void 903wpi_dma_contig_free(struct wpi_dma_info *dma) 904{ 905 if (dma->tag) { 906 if (dma->map != NULL) { 907 if (dma->paddr_start != 0) { 908 bus_dmamap_sync(dma->tag, dma->map, 909 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 910 bus_dmamap_unload(dma->tag, dma->map); 911 } 912 bus_dmamem_free(dma->tag, &dma->vaddr_start, dma->map); 913 } 914 bus_dma_tag_destroy(dma->tag); 915 } 916} 917 918/* 919 * Allocate a shared page between host and NIC. 920 */ 921static int 922wpi_alloc_shared(struct wpi_softc *sc) 923{ 924 int error; 925 926 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 927 (void **)&sc->shared, sizeof (struct wpi_shared), 928 PAGE_SIZE, 929 BUS_DMA_NOWAIT); 930 931 if (error != 0) { 932 device_printf(sc->sc_dev, 933 "could not allocate shared area DMA memory\n"); 934 } 935 936 return error; 937} 938 939static void 940wpi_free_shared(struct wpi_softc *sc) 941{ 942 wpi_dma_contig_free(&sc->shared_dma); 943} 944 945static int 946wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 947{ 948 949 int i, error; 950 951 ring->cur = 0; 952 953 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 954 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 955 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 956 957 if (error != 0) { 958 device_printf(sc->sc_dev, 959 "%s: could not allocate rx ring DMA memory, error %d\n", 960 __func__, error); 961 goto fail; 962 } 963 964 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 965 BUS_SPACE_MAXADDR_32BIT, 966 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 967 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 968 if (error != 0) { 969 device_printf(sc->sc_dev, 970 "%s: bus_dma_tag_create_failed, error %d\n", 971 __func__, error); 972 goto fail; 973 } 974 975 /* 976 * Setup Rx buffers. 977 */ 978 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 979 struct wpi_rx_data *data = &ring->data[i]; 980 struct mbuf *m; 981 bus_addr_t paddr; 982 983 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 984 if (error != 0) { 985 device_printf(sc->sc_dev, 986 "%s: bus_dmamap_create failed, error %d\n", 987 __func__, error); 988 goto fail; 989 } 990 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 991 if (m == NULL) { 992 device_printf(sc->sc_dev, 993 "%s: could not allocate rx mbuf\n", __func__); 994 error = ENOMEM; 995 goto fail; 996 } 997 /* map page */ 998 error = bus_dmamap_load(ring->data_dmat, data->map, 999 mtod(m, caddr_t), MJUMPAGESIZE, 1000 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1001 if (error != 0 && error != EFBIG) { 1002 device_printf(sc->sc_dev, 1003 "%s: bus_dmamap_load failed, error %d\n", 1004 __func__, error); 1005 m_freem(m); 1006 error = ENOMEM; /* XXX unique code */ 1007 goto fail; 1008 } 1009 bus_dmamap_sync(ring->data_dmat, data->map, 1010 BUS_DMASYNC_PREWRITE); 1011 1012 data->m = m; 1013 ring->desc[i] = htole32(paddr); 1014 } 1015 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1016 BUS_DMASYNC_PREWRITE); 1017 return 0; 1018fail: 1019 wpi_free_rx_ring(sc, ring); 1020 return error; 1021} 1022 1023static void 1024wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1025{ 1026 int ntries; 1027 1028 wpi_mem_lock(sc); 1029 1030 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1031 1032 for (ntries = 0; ntries < 100; ntries++) { 1033 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1034 break; 1035 DELAY(10); 1036 } 1037 1038 wpi_mem_unlock(sc); 1039 1040#ifdef WPI_DEBUG 1041 if (ntries == 100 && wpi_debug > 0) 1042 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1043#endif 1044 1045 ring->cur = 0; 1046} 1047 1048static void 1049wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1050{ 1051 int i; 1052 1053 wpi_dma_contig_free(&ring->desc_dma); 1054 1055 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1056 struct wpi_rx_data *data = &ring->data[i]; 1057 1058 if (data->m != NULL) { 1059 bus_dmamap_sync(ring->data_dmat, data->map, 1060 BUS_DMASYNC_POSTREAD); 1061 bus_dmamap_unload(ring->data_dmat, data->map); 1062 m_freem(data->m); 1063 } 1064 if (data->map != NULL) 1065 bus_dmamap_destroy(ring->data_dmat, data->map); 1066 } 1067} 1068 1069static int 1070wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1071 int qid) 1072{ 1073 struct wpi_tx_data *data; 1074 int i, error; 1075 1076 ring->qid = qid; 1077 ring->count = count; 1078 ring->queued = 0; 1079 ring->cur = 0; 1080 ring->data = NULL; 1081 1082 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1083 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1084 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1085 1086 if (error != 0) { 1087 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1088 goto fail; 1089 } 1090 1091 /* update shared page with ring's base address */ 1092 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1093 1094 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1095 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1096 BUS_DMA_NOWAIT); 1097 1098 if (error != 0) { 1099 device_printf(sc->sc_dev, 1100 "could not allocate tx command DMA memory\n"); 1101 goto fail; 1102 } 1103 1104 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1105 M_NOWAIT | M_ZERO); 1106 if (ring->data == NULL) { 1107 device_printf(sc->sc_dev, 1108 "could not allocate tx data slots\n"); 1109 goto fail; 1110 } 1111 1112 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1113 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1114 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1115 &ring->data_dmat); 1116 if (error != 0) { 1117 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1118 goto fail; 1119 } 1120 1121 for (i = 0; i < count; i++) { 1122 data = &ring->data[i]; 1123 1124 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1125 if (error != 0) { 1126 device_printf(sc->sc_dev, 1127 "could not create tx buf DMA map\n"); 1128 goto fail; 1129 } 1130 bus_dmamap_sync(ring->data_dmat, data->map, 1131 BUS_DMASYNC_PREWRITE); 1132 } 1133 1134 return 0; 1135 1136fail: 1137 wpi_free_tx_ring(sc, ring); 1138 return error; 1139} 1140 1141static void 1142wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1143{ 1144 struct wpi_tx_data *data; 1145 int i, ntries; 1146 1147 wpi_mem_lock(sc); 1148 1149 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1150 for (ntries = 0; ntries < 100; ntries++) { 1151 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1152 break; 1153 DELAY(10); 1154 } 1155#ifdef WPI_DEBUG 1156 if (ntries == 100 && wpi_debug > 0) 1157 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1158 ring->qid); 1159#endif 1160 wpi_mem_unlock(sc); 1161 1162 for (i = 0; i < ring->count; i++) { 1163 data = &ring->data[i]; 1164 1165 if (data->m != NULL) { 1166 bus_dmamap_unload(ring->data_dmat, data->map); 1167 m_freem(data->m); 1168 data->m = NULL; 1169 } 1170 } 1171 1172 ring->queued = 0; 1173 ring->cur = 0; 1174} 1175 1176static void 1177wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1178{ 1179 struct wpi_tx_data *data; 1180 int i; 1181 1182 wpi_dma_contig_free(&ring->desc_dma); 1183 wpi_dma_contig_free(&ring->cmd_dma); 1184 1185 if (ring->data != NULL) { 1186 for (i = 0; i < ring->count; i++) { 1187 data = &ring->data[i]; 1188 1189 if (data->m != NULL) { 1190 bus_dmamap_sync(ring->data_dmat, data->map, 1191 BUS_DMASYNC_POSTWRITE); 1192 bus_dmamap_unload(ring->data_dmat, data->map); 1193 m_freem(data->m); 1194 data->m = NULL; 1195 } 1196 } 1197 free(ring->data, M_DEVBUF); 1198 } 1199 1200 if (ring->data_dmat != NULL) 1201 bus_dma_tag_destroy(ring->data_dmat); 1202} 1203 1204static int 1205wpi_shutdown(device_t dev) 1206{ 1207 struct wpi_softc *sc = device_get_softc(dev); 1208 1209 WPI_LOCK(sc); 1210 wpi_stop_locked(sc); 1211 wpi_unload_firmware(sc); 1212 WPI_UNLOCK(sc); 1213 1214 return 0; 1215} 1216 1217static int 1218wpi_suspend(device_t dev) 1219{ 1220 struct wpi_softc *sc = device_get_softc(dev); 1221 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1222 1223 ieee80211_suspend_all(ic); 1224 return 0; 1225} 1226 1227static int 1228wpi_resume(device_t dev) 1229{ 1230 struct wpi_softc *sc = device_get_softc(dev); 1231 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1232 1233 pci_write_config(dev, 0x41, 0, 1); 1234 1235 ieee80211_resume_all(ic); 1236 return 0; 1237} 1238 1239/** 1240 * Called by net80211 when ever there is a change to 80211 state machine 1241 */ 1242static int 1243wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1244{ 1245 struct wpi_vap *wvp = WPI_VAP(vap); 1246 struct ieee80211com *ic = vap->iv_ic; 1247 struct ifnet *ifp = ic->ic_ifp; 1248 struct wpi_softc *sc = ifp->if_softc; 1249 int error; 1250 1251 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1252 ieee80211_state_name[vap->iv_state], 1253 ieee80211_state_name[nstate], sc->flags)); 1254 1255 IEEE80211_UNLOCK(ic); 1256 WPI_LOCK(sc); 1257 if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) { 1258 /* 1259 * On !INIT -> SCAN transitions, we need to clear any possible 1260 * knowledge about associations. 1261 */ 1262 error = wpi_config(sc); 1263 if (error != 0) { 1264 device_printf(sc->sc_dev, 1265 "%s: device config failed, error %d\n", 1266 __func__, error); 1267 } 1268 } 1269 if (nstate == IEEE80211_S_AUTH || 1270 (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) { 1271 /* 1272 * The node must be registered in the firmware before auth. 1273 * Also the associd must be cleared on RUN -> ASSOC 1274 * transitions. 1275 */ 1276 error = wpi_auth(sc, vap); 1277 if (error != 0) { 1278 device_printf(sc->sc_dev, 1279 "%s: could not move to auth state, error %d\n", 1280 __func__, error); 1281 } 1282 } 1283 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1284 error = wpi_run(sc, vap); 1285 if (error != 0) { 1286 device_printf(sc->sc_dev, 1287 "%s: could not move to run state, error %d\n", 1288 __func__, error); 1289 } 1290 } 1291 if (nstate == IEEE80211_S_RUN) { 1292 /* RUN -> RUN transition; just restart the timers */ 1293 wpi_calib_timeout(sc); 1294 /* XXX split out rate control timer */ 1295 } 1296 WPI_UNLOCK(sc); 1297 IEEE80211_LOCK(ic); 1298 return wvp->newstate(vap, nstate, arg); 1299} 1300 1301/* 1302 * Grab exclusive access to NIC memory. 1303 */ 1304static void 1305wpi_mem_lock(struct wpi_softc *sc) 1306{ 1307 int ntries; 1308 uint32_t tmp; 1309 1310 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1311 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1312 1313 /* spin until we actually get the lock */ 1314 for (ntries = 0; ntries < 100; ntries++) { 1315 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1316 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1317 break; 1318 DELAY(10); 1319 } 1320 if (ntries == 100) 1321 device_printf(sc->sc_dev, "could not lock memory\n"); 1322} 1323 1324/* 1325 * Release lock on NIC memory. 1326 */ 1327static void 1328wpi_mem_unlock(struct wpi_softc *sc) 1329{ 1330 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1331 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1332} 1333 1334static uint32_t 1335wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1336{ 1337 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1338 return WPI_READ(sc, WPI_READ_MEM_DATA); 1339} 1340 1341static void 1342wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1343{ 1344 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1345 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1346} 1347 1348static void 1349wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1350 const uint32_t *data, int wlen) 1351{ 1352 for (; wlen > 0; wlen--, data++, addr+=4) 1353 wpi_mem_write(sc, addr, *data); 1354} 1355 1356/* 1357 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1358 * using the traditional bit-bang method. Data is read up until len bytes have 1359 * been obtained. 1360 */ 1361static uint16_t 1362wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1363{ 1364 int ntries; 1365 uint32_t val; 1366 uint8_t *out = data; 1367 1368 wpi_mem_lock(sc); 1369 1370 for (; len > 0; len -= 2, addr++) { 1371 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1372 1373 for (ntries = 0; ntries < 10; ntries++) { 1374 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1375 break; 1376 DELAY(5); 1377 } 1378 1379 if (ntries == 10) { 1380 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1381 return ETIMEDOUT; 1382 } 1383 1384 *out++= val >> 16; 1385 if (len > 1) 1386 *out ++= val >> 24; 1387 } 1388 1389 wpi_mem_unlock(sc); 1390 1391 return 0; 1392} 1393 1394/* 1395 * The firmware text and data segments are transferred to the NIC using DMA. 1396 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1397 * where to find it. Once the NIC has copied the firmware into its internal 1398 * memory, we can free our local copy in the driver. 1399 */ 1400static int 1401wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1402{ 1403 int error, ntries; 1404 1405 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1406 1407 size /= sizeof(uint32_t); 1408 1409 wpi_mem_lock(sc); 1410 1411 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1412 (const uint32_t *)fw, size); 1413 1414 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1415 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1416 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1417 1418 /* run microcode */ 1419 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1420 1421 /* wait while the adapter is busy copying the firmware */ 1422 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1423 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1424 DPRINTFN(WPI_DEBUG_HW, 1425 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1426 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1427 if (status & WPI_TX_IDLE(6)) { 1428 DPRINTFN(WPI_DEBUG_HW, 1429 ("Status Match! - ntries = %d\n", ntries)); 1430 break; 1431 } 1432 DELAY(10); 1433 } 1434 if (ntries == 1000) { 1435 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1436 error = ETIMEDOUT; 1437 } 1438 1439 /* start the microcode executing */ 1440 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1441 1442 wpi_mem_unlock(sc); 1443 1444 return (error); 1445} 1446 1447static void 1448wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1449 struct wpi_rx_data *data) 1450{ 1451 struct ifnet *ifp = sc->sc_ifp; 1452 struct ieee80211com *ic = ifp->if_l2com; 1453 struct wpi_rx_ring *ring = &sc->rxq; 1454 struct wpi_rx_stat *stat; 1455 struct wpi_rx_head *head; 1456 struct wpi_rx_tail *tail; 1457 struct ieee80211_node *ni; 1458 struct mbuf *m, *mnew; 1459 bus_addr_t paddr; 1460 int error; 1461 1462 stat = (struct wpi_rx_stat *)(desc + 1); 1463 1464 if (stat->len > WPI_STAT_MAXLEN) { 1465 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1466 ifp->if_ierrors++; 1467 return; 1468 } 1469 1470 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1471 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1472 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1473 1474 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1475 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1476 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1477 (uintmax_t)le64toh(tail->tstamp))); 1478 1479 /* discard Rx frames with bad CRC early */ 1480 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1481 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1482 le32toh(tail->flags))); 1483 ifp->if_ierrors++; 1484 return; 1485 } 1486 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1487 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1488 le16toh(head->len))); 1489 ifp->if_ierrors++; 1490 return; 1491 } 1492 1493 /* XXX don't need mbuf, just dma buffer */ 1494 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1495 if (mnew == NULL) { 1496 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1497 __func__)); 1498 ifp->if_ierrors++; 1499 return; 1500 } 1501 bus_dmamap_unload(ring->data_dmat, data->map); 1502 1503 error = bus_dmamap_load(ring->data_dmat, data->map, 1504 mtod(mnew, caddr_t), MJUMPAGESIZE, 1505 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1506 if (error != 0 && error != EFBIG) { 1507 device_printf(sc->sc_dev, 1508 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1509 m_freem(mnew); 1510 ifp->if_ierrors++; 1511 return; 1512 } 1513 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1514 1515 /* finalize mbuf and swap in new one */ 1516 m = data->m; 1517 m->m_pkthdr.rcvif = ifp; 1518 m->m_data = (caddr_t)(head + 1); 1519 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1520 1521 data->m = mnew; 1522 /* update Rx descriptor */ 1523 ring->desc[ring->cur] = htole32(paddr); 1524 1525 if (ieee80211_radiotap_active(ic)) { 1526 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1527 1528 tap->wr_flags = 0; 1529 tap->wr_chan_freq = 1530 htole16(ic->ic_channels[head->chan].ic_freq); 1531 tap->wr_chan_flags = 1532 htole16(ic->ic_channels[head->chan].ic_flags); 1533 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1534 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1535 tap->wr_tsft = tail->tstamp; 1536 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1537 switch (head->rate) { 1538 /* CCK rates */ 1539 case 10: tap->wr_rate = 2; break; 1540 case 20: tap->wr_rate = 4; break; 1541 case 55: tap->wr_rate = 11; break; 1542 case 110: tap->wr_rate = 22; break; 1543 /* OFDM rates */ 1544 case 0xd: tap->wr_rate = 12; break; 1545 case 0xf: tap->wr_rate = 18; break; 1546 case 0x5: tap->wr_rate = 24; break; 1547 case 0x7: tap->wr_rate = 36; break; 1548 case 0x9: tap->wr_rate = 48; break; 1549 case 0xb: tap->wr_rate = 72; break; 1550 case 0x1: tap->wr_rate = 96; break; 1551 case 0x3: tap->wr_rate = 108; break; 1552 /* unknown rate: should not happen */ 1553 default: tap->wr_rate = 0; 1554 } 1555 if (le16toh(head->flags) & 0x4) 1556 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1557 } 1558 1559 WPI_UNLOCK(sc); 1560 1561 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1562 if (ni != NULL) { 1563 (void) ieee80211_input(ni, m, stat->rssi, 0); 1564 ieee80211_free_node(ni); 1565 } else 1566 (void) ieee80211_input_all(ic, m, stat->rssi, 0); 1567 1568 WPI_LOCK(sc); 1569} 1570 1571static void 1572wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1573{ 1574 struct ifnet *ifp = sc->sc_ifp; 1575 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1576 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1577 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1578 struct ieee80211_node *ni = txdata->ni; 1579 struct ieee80211vap *vap = ni->ni_vap; 1580 int retrycnt = 0; 1581 1582 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1583 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1584 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1585 le32toh(stat->status))); 1586 1587 /* 1588 * Update rate control statistics for the node. 1589 * XXX we should not count mgmt frames since they're always sent at 1590 * the lowest available bit-rate. 1591 * XXX frames w/o ACK shouldn't be used either 1592 */ 1593 if (stat->ntries > 0) { 1594 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1595 retrycnt = 1; 1596 } 1597 ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS, 1598 &retrycnt, NULL); 1599 1600 /* XXX oerrors should only count errors !maxtries */ 1601 if ((le32toh(stat->status) & 0xff) != 1) 1602 ifp->if_oerrors++; 1603 else 1604 ifp->if_opackets++; 1605 1606 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1607 bus_dmamap_unload(ring->data_dmat, txdata->map); 1608 /* XXX handle M_TXCB? */ 1609 m_freem(txdata->m); 1610 txdata->m = NULL; 1611 ieee80211_free_node(txdata->ni); 1612 txdata->ni = NULL; 1613 1614 ring->queued--; 1615 1616 sc->sc_tx_timer = 0; 1617 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1618 wpi_start_locked(ifp); 1619} 1620 1621static void 1622wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1623{ 1624 struct wpi_tx_ring *ring = &sc->cmdq; 1625 struct wpi_tx_data *data; 1626 1627 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1628 "type=%s len=%d\n", desc->qid, desc->idx, 1629 desc->flags, wpi_cmd_str(desc->type), 1630 le32toh(desc->len))); 1631 1632 if ((desc->qid & 7) != 4) 1633 return; /* not a command ack */ 1634 1635 data = &ring->data[desc->idx]; 1636 1637 /* if the command was mapped in a mbuf, free it */ 1638 if (data->m != NULL) { 1639 bus_dmamap_unload(ring->data_dmat, data->map); 1640 m_freem(data->m); 1641 data->m = NULL; 1642 } 1643 1644 sc->flags &= ~WPI_FLAG_BUSY; 1645 wakeup(&ring->cmd[desc->idx]); 1646} 1647 1648static void 1649wpi_notif_intr(struct wpi_softc *sc) 1650{ 1651 struct ifnet *ifp = sc->sc_ifp; 1652 struct ieee80211com *ic = ifp->if_l2com; 1653 struct wpi_rx_desc *desc; 1654 struct wpi_rx_data *data; 1655 uint32_t hw; 1656 1657 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1658 BUS_DMASYNC_POSTREAD); 1659 1660 hw = le32toh(sc->shared->next); 1661 while (sc->rxq.cur != hw) { 1662 data = &sc->rxq.data[sc->rxq.cur]; 1663 1664 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1665 BUS_DMASYNC_POSTREAD); 1666 desc = (void *)data->m->m_ext.ext_buf; 1667 1668 DPRINTFN(WPI_DEBUG_NOTIFY, 1669 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1670 desc->qid, 1671 desc->idx, 1672 desc->flags, 1673 desc->type, 1674 le32toh(desc->len))); 1675 1676 if (!(desc->qid & 0x80)) /* reply to a command */ 1677 wpi_cmd_intr(sc, desc); 1678 1679 switch (desc->type) { 1680 case WPI_RX_DONE: 1681 /* a 802.11 frame was received */ 1682 wpi_rx_intr(sc, desc, data); 1683 break; 1684 1685 case WPI_TX_DONE: 1686 /* a 802.11 frame has been transmitted */ 1687 wpi_tx_intr(sc, desc); 1688 break; 1689 1690 case WPI_UC_READY: 1691 { 1692 struct wpi_ucode_info *uc = 1693 (struct wpi_ucode_info *)(desc + 1); 1694 1695 /* the microcontroller is ready */ 1696 DPRINTF(("microcode alive notification version %x " 1697 "alive %x\n", le32toh(uc->version), 1698 le32toh(uc->valid))); 1699 1700 if (le32toh(uc->valid) != 1) { 1701 device_printf(sc->sc_dev, 1702 "microcontroller initialization failed\n"); 1703 wpi_stop_locked(sc); 1704 } 1705 break; 1706 } 1707 case WPI_STATE_CHANGED: 1708 { 1709 uint32_t *status = (uint32_t *)(desc + 1); 1710 1711 /* enabled/disabled notification */ 1712 DPRINTF(("state changed to %x\n", le32toh(*status))); 1713 1714 if (le32toh(*status) & 1) { 1715 device_printf(sc->sc_dev, 1716 "Radio transmitter is switched off\n"); 1717 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1718 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1719 /* Disable firmware commands */ 1720 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1721 } 1722 break; 1723 } 1724 case WPI_START_SCAN: 1725 { 1726#ifdef WPI_DEBUG 1727 struct wpi_start_scan *scan = 1728 (struct wpi_start_scan *)(desc + 1); 1729#endif 1730 1731 DPRINTFN(WPI_DEBUG_SCANNING, 1732 ("scanning channel %d status %x\n", 1733 scan->chan, le32toh(scan->status))); 1734 break; 1735 } 1736 case WPI_STOP_SCAN: 1737 { 1738#ifdef WPI_DEBUG 1739 struct wpi_stop_scan *scan = 1740 (struct wpi_stop_scan *)(desc + 1); 1741#endif 1742 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1743 1744 DPRINTFN(WPI_DEBUG_SCANNING, 1745 ("scan finished nchan=%d status=%d chan=%d\n", 1746 scan->nchan, scan->status, scan->chan)); 1747 1748 sc->sc_scan_timer = 0; 1749 ieee80211_scan_next(vap); 1750 break; 1751 } 1752 case WPI_MISSED_BEACON: 1753 { 1754 struct wpi_missed_beacon *beacon = 1755 (struct wpi_missed_beacon *)(desc + 1); 1756 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1757 1758 if (le32toh(beacon->consecutive) >= 1759 vap->iv_bmissthreshold) { 1760 DPRINTF(("Beacon miss: %u >= %u\n", 1761 le32toh(beacon->consecutive), 1762 vap->iv_bmissthreshold)); 1763 ieee80211_beacon_miss(ic); 1764 } 1765 break; 1766 } 1767 } 1768 1769 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1770 } 1771 1772 /* tell the firmware what we have processed */ 1773 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1774 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1775} 1776 1777static void 1778wpi_intr(void *arg) 1779{ 1780 struct wpi_softc *sc = arg; 1781 uint32_t r; 1782 1783 WPI_LOCK(sc); 1784 1785#if !defined(__HAIKU__) 1786 r = WPI_READ(sc, WPI_INTR); 1787 if (r == 0 || r == 0xffffffff) { 1788 WPI_UNLOCK(sc); 1789 return; 1790 } 1791 1792 /* disable interrupts */ 1793 WPI_WRITE(sc, WPI_MASK, 0); 1794#else 1795 r = atomic_get((int32 *)&sc->sc_intr_status); 1796#endif 1797 1798 /* ack interrupts */ 1799 WPI_WRITE(sc, WPI_INTR, r); 1800 1801 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1802 struct ifnet *ifp = sc->sc_ifp; 1803 struct ieee80211com *ic = ifp->if_l2com; 1804 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1805 1806 device_printf(sc->sc_dev, "fatal firmware error\n"); 1807 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1808 "(Hardware Error)")); 1809 if (vap != NULL) 1810 ieee80211_cancel_scan(vap); 1811 ieee80211_runtask(ic, &sc->sc_restarttask); 1812 sc->flags &= ~WPI_FLAG_BUSY; 1813 WPI_UNLOCK(sc); 1814 return; 1815 } 1816 1817 if (r & WPI_RX_INTR) 1818 wpi_notif_intr(sc); 1819 1820 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1821 wakeup(sc); 1822 1823 /* re-enable interrupts */ 1824 if (sc->sc_ifp->if_flags & IFF_UP) 1825 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1826 1827 WPI_UNLOCK(sc); 1828} 1829 1830static uint8_t 1831wpi_plcp_signal(int rate) 1832{ 1833 switch (rate) { 1834 /* CCK rates (returned values are device-dependent) */ 1835 case 2: return 10; 1836 case 4: return 20; 1837 case 11: return 55; 1838 case 22: return 110; 1839 1840 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1841 /* R1-R4 (ral/ural is R4-R1) */ 1842 case 12: return 0xd; 1843 case 18: return 0xf; 1844 case 24: return 0x5; 1845 case 36: return 0x7; 1846 case 48: return 0x9; 1847 case 72: return 0xb; 1848 case 96: return 0x1; 1849 case 108: return 0x3; 1850 1851 /* unsupported rates (should not get there) */ 1852 default: return 0; 1853 } 1854} 1855 1856/* quickly determine if a given rate is CCK or OFDM */ 1857#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1858 1859/* 1860 * Construct the data packet for a transmit buffer and acutally put 1861 * the buffer onto the transmit ring, kicking the card to process the 1862 * the buffer. 1863 */ 1864static int 1865wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1866 int ac) 1867{ 1868 struct ieee80211vap *vap = ni->ni_vap; 1869 struct ifnet *ifp = sc->sc_ifp; 1870 struct ieee80211com *ic = ifp->if_l2com; 1871 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1872 struct wpi_tx_ring *ring = &sc->txq[ac]; 1873 struct wpi_tx_desc *desc; 1874 struct wpi_tx_data *data; 1875 struct wpi_tx_cmd *cmd; 1876 struct wpi_cmd_data *tx; 1877 struct ieee80211_frame *wh; 1878 const struct ieee80211_txparam *tp; 1879 struct ieee80211_key *k; 1880 struct mbuf *mnew; 1881 int i, error, nsegs, rate, hdrlen, ismcast; 1882 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1883 1884 desc = &ring->desc[ring->cur]; 1885 data = &ring->data[ring->cur]; 1886 1887 wh = mtod(m0, struct ieee80211_frame *); 1888 1889 hdrlen = ieee80211_hdrsize(wh); 1890 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1891 1892 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1893 k = ieee80211_crypto_encap(ni, m0); 1894 if (k == NULL) { 1895 m_freem(m0); 1896 return ENOBUFS; 1897 } 1898 /* packet header may have moved, reset our local pointer */ 1899 wh = mtod(m0, struct ieee80211_frame *); 1900 } 1901 1902 cmd = &ring->cmd[ring->cur]; 1903 cmd->code = WPI_CMD_TX_DATA; 1904 cmd->flags = 0; 1905 cmd->qid = ring->qid; 1906 cmd->idx = ring->cur; 1907 1908 tx = (struct wpi_cmd_data *)cmd->data; 1909 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1910 tx->timeout = htole16(0); 1911 tx->ofdm_mask = 0xff; 1912 tx->cck_mask = 0x0f; 1913 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1914 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1915 tx->len = htole16(m0->m_pkthdr.len); 1916 1917 if (!ismcast) { 1918 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1919 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1920 tx->flags |= htole32(WPI_TX_NEED_ACK); 1921 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1922 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1923 tx->rts_ntries = 7; 1924 } 1925 } 1926 /* pick a rate */ 1927 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1928 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1929 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1930 /* tell h/w to set timestamp in probe responses */ 1931 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1932 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1933 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1934 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1935 tx->timeout = htole16(3); 1936 else 1937 tx->timeout = htole16(2); 1938 rate = tp->mgmtrate; 1939 } else if (ismcast) { 1940 rate = tp->mcastrate; 1941 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1942 rate = tp->ucastrate; 1943 } else { 1944 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1945 rate = ni->ni_txrate; 1946 } 1947 tx->rate = wpi_plcp_signal(rate); 1948 1949 /* be very persistant at sending frames out */ 1950#if 0 1951 tx->data_ntries = tp->maxretry; 1952#else 1953 tx->data_ntries = 15; /* XXX way too high */ 1954#endif 1955 1956 if (ieee80211_radiotap_active_vap(vap)) { 1957 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1958 tap->wt_flags = 0; 1959 tap->wt_rate = rate; 1960 tap->wt_hwqueue = ac; 1961 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1962 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1963 1964 ieee80211_radiotap_tx(vap, m0); 1965 } 1966 1967 /* save and trim IEEE802.11 header */ 1968 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1969 m_adj(m0, hdrlen); 1970 1971 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 1972 &nsegs, BUS_DMA_NOWAIT); 1973 if (error != 0 && error != EFBIG) { 1974 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1975 error); 1976 m_freem(m0); 1977 return error; 1978 } 1979 if (error != 0) { 1980 /* XXX use m_collapse */ 1981 mnew = m_defrag(m0, M_DONTWAIT); 1982 if (mnew == NULL) { 1983 device_printf(sc->sc_dev, 1984 "could not defragment mbuf\n"); 1985 m_freem(m0); 1986 return ENOBUFS; 1987 } 1988 m0 = mnew; 1989 1990 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 1991 m0, segs, &nsegs, BUS_DMA_NOWAIT); 1992 if (error != 0) { 1993 device_printf(sc->sc_dev, 1994 "could not map mbuf (error %d)\n", error); 1995 m_freem(m0); 1996 return error; 1997 } 1998 } 1999 2000 data->m = m0; 2001 data->ni = ni; 2002 2003 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 2004 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 2005 2006 /* first scatter/gather segment is used by the tx data command */ 2007 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2008 (1 + nsegs) << 24); 2009 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2010 ring->cur * sizeof (struct wpi_tx_cmd)); 2011 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 2012 for (i = 1; i <= nsegs; i++) { 2013 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 2014 desc->segs[i].len = htole32(segs[i - 1].ds_len); 2015 } 2016 2017 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2018 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2019 BUS_DMASYNC_PREWRITE); 2020 2021 ring->queued++; 2022 2023 /* kick ring */ 2024 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2025 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2026 2027 return 0; 2028} 2029 2030/** 2031 * Process data waiting to be sent on the IFNET output queue 2032 */ 2033static void 2034wpi_start(struct ifnet *ifp) 2035{ 2036 struct wpi_softc *sc = ifp->if_softc; 2037 2038 WPI_LOCK(sc); 2039 wpi_start_locked(ifp); 2040 WPI_UNLOCK(sc); 2041} 2042 2043static void 2044wpi_start_locked(struct ifnet *ifp) 2045{ 2046 struct wpi_softc *sc = ifp->if_softc; 2047 struct ieee80211_node *ni; 2048 struct mbuf *m; 2049 int ac; 2050 2051 WPI_LOCK_ASSERT(sc); 2052 2053 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2054 return; 2055 2056 for (;;) { 2057 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2058 if (m == NULL) 2059 break; 2060 ac = M_WME_GETAC(m); 2061 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2062 /* there is no place left in this ring */ 2063 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2064 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2065 break; 2066 } 2067 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2068 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2069 ieee80211_free_node(ni); 2070 ifp->if_oerrors++; 2071 break; 2072 } 2073 sc->sc_tx_timer = 5; 2074 } 2075} 2076 2077static int 2078wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2079 const struct ieee80211_bpf_params *params) 2080{ 2081 struct ieee80211com *ic = ni->ni_ic; 2082 struct ifnet *ifp = ic->ic_ifp; 2083 struct wpi_softc *sc = ifp->if_softc; 2084 2085 /* prevent management frames from being sent if we're not ready */ 2086 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2087 m_freem(m); 2088 ieee80211_free_node(ni); 2089 return ENETDOWN; 2090 } 2091 WPI_LOCK(sc); 2092 2093 /* management frames go into ring 0 */ 2094 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2095 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2096 m_freem(m); 2097 WPI_UNLOCK(sc); 2098 ieee80211_free_node(ni); 2099 return ENOBUFS; /* XXX */ 2100 } 2101 2102 ifp->if_opackets++; 2103 if (wpi_tx_data(sc, m, ni, 0) != 0) 2104 goto bad; 2105 sc->sc_tx_timer = 5; 2106 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2107 2108 WPI_UNLOCK(sc); 2109 return 0; 2110bad: 2111 ifp->if_oerrors++; 2112 WPI_UNLOCK(sc); 2113 ieee80211_free_node(ni); 2114 return EIO; /* XXX */ 2115} 2116 2117static int 2118wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2119{ 2120 struct wpi_softc *sc = ifp->if_softc; 2121 struct ieee80211com *ic = ifp->if_l2com; 2122 struct ifreq *ifr = (struct ifreq *) data; 2123 int error = 0, startall = 0; 2124 2125 switch (cmd) { 2126 case SIOCSIFFLAGS: 2127 WPI_LOCK(sc); 2128 if ((ifp->if_flags & IFF_UP)) { 2129 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2130 wpi_init_locked(sc, 0); 2131 startall = 1; 2132 } 2133 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2134 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2135 wpi_stop_locked(sc); 2136 WPI_UNLOCK(sc); 2137 if (startall) 2138 ieee80211_start_all(ic); 2139 break; 2140 case SIOCGIFMEDIA: 2141 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2142 break; 2143 case SIOCGIFADDR: 2144 error = ether_ioctl(ifp, cmd, data); 2145 break; 2146 default: 2147 error = EINVAL; 2148 break; 2149 } 2150 return error; 2151} 2152 2153/* 2154 * Extract various information from EEPROM. 2155 */ 2156static void 2157wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2158{ 2159 int i; 2160 2161 /* read the hardware capabilities, revision and SKU type */ 2162 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2163 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2164 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2165 2166 /* read the regulatory domain */ 2167 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2168 2169 /* read in the hw MAC address */ 2170 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2171 2172 /* read the list of authorized channels */ 2173 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2174 wpi_read_eeprom_channels(sc,i); 2175 2176 /* read the power level calibration info for each group */ 2177 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2178 wpi_read_eeprom_group(sc,i); 2179} 2180 2181/* 2182 * Send a command to the firmware. 2183 */ 2184static int 2185wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2186{ 2187 struct wpi_tx_ring *ring = &sc->cmdq; 2188 struct wpi_tx_desc *desc; 2189 struct wpi_tx_cmd *cmd; 2190 2191#ifdef WPI_DEBUG 2192 if (!async) { 2193 WPI_LOCK_ASSERT(sc); 2194 } 2195#endif 2196 2197 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2198 async)); 2199 2200 if (sc->flags & WPI_FLAG_BUSY) { 2201 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2202 __func__, code); 2203 return EAGAIN; 2204 } 2205 sc->flags|= WPI_FLAG_BUSY; 2206 2207 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2208 code, size)); 2209 2210 desc = &ring->desc[ring->cur]; 2211 cmd = &ring->cmd[ring->cur]; 2212 2213 cmd->code = code; 2214 cmd->flags = 0; 2215 cmd->qid = ring->qid; 2216 cmd->idx = ring->cur; 2217 memcpy(cmd->data, buf, size); 2218 2219 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2220 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2221 ring->cur * sizeof (struct wpi_tx_cmd)); 2222 desc->segs[0].len = htole32(4 + size); 2223 2224 /* kick cmd ring */ 2225 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2226 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2227 2228 if (async) { 2229 sc->flags &= ~ WPI_FLAG_BUSY; 2230 return 0; 2231 } 2232 2233 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2234} 2235 2236static int 2237wpi_wme_update(struct ieee80211com *ic) 2238{ 2239#define WPI_EXP2(v) htole16((1 << (v)) - 1) 2240#define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2241 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2242 const struct wmeParams *wmep; 2243 struct wpi_wme_setup wme; 2244 int ac; 2245 2246 /* don't override default WME values if WME is not actually enabled */ 2247 if (!(ic->ic_flags & IEEE80211_F_WME)) 2248 return 0; 2249 2250 wme.flags = 0; 2251 for (ac = 0; ac < WME_NUM_AC; ac++) { 2252 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2253 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2254 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2255 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2256 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2257 2258 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2259 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2260 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2261 } 2262 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2263#undef WPI_USEC 2264#undef WPI_EXP2 2265} 2266 2267/* 2268 * Configure h/w multi-rate retries. 2269 */ 2270static int 2271wpi_mrr_setup(struct wpi_softc *sc) 2272{ 2273 struct ifnet *ifp = sc->sc_ifp; 2274 struct ieee80211com *ic = ifp->if_l2com; 2275 struct wpi_mrr_setup mrr; 2276 int i, error; 2277 2278 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2279 2280 /* CCK rates (not used with 802.11a) */ 2281 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2282 mrr.rates[i].flags = 0; 2283 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2284 /* fallback to the immediate lower CCK rate (if any) */ 2285 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2286 /* try one time at this rate before falling back to "next" */ 2287 mrr.rates[i].ntries = 1; 2288 } 2289 2290 /* OFDM rates (not used with 802.11b) */ 2291 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2292 mrr.rates[i].flags = 0; 2293 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2294 /* fallback to the immediate lower OFDM rate (if any) */ 2295 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2296 mrr.rates[i].next = (i == WPI_OFDM6) ? 2297 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2298 WPI_OFDM6 : WPI_CCK2) : 2299 i - 1; 2300 /* try one time at this rate before falling back to "next" */ 2301 mrr.rates[i].ntries = 1; 2302 } 2303 2304 /* setup MRR for control frames */ 2305 mrr.which = WPI_MRR_CTL; 2306 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2307 if (error != 0) { 2308 device_printf(sc->sc_dev, 2309 "could not setup MRR for control frames\n"); 2310 return error; 2311 } 2312 2313 /* setup MRR for data frames */ 2314 mrr.which = WPI_MRR_DATA; 2315 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2316 if (error != 0) { 2317 device_printf(sc->sc_dev, 2318 "could not setup MRR for data frames\n"); 2319 return error; 2320 } 2321 2322 return 0; 2323} 2324 2325static void 2326wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2327{ 2328 struct wpi_cmd_led led; 2329 2330 led.which = which; 2331 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2332 led.off = off; 2333 led.on = on; 2334 2335 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2336} 2337 2338static void 2339wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2340{ 2341 struct wpi_cmd_tsf tsf; 2342 uint64_t val, mod; 2343 2344 memset(&tsf, 0, sizeof tsf); 2345 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2346 tsf.bintval = htole16(ni->ni_intval); 2347 tsf.lintval = htole16(10); 2348 2349 /* compute remaining time until next beacon */ 2350 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2351 mod = le64toh(tsf.tstamp) % val; 2352 tsf.binitval = htole32((uint32_t)(val - mod)); 2353 2354 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2355 device_printf(sc->sc_dev, "could not enable TSF\n"); 2356} 2357 2358#if 0 2359/* 2360 * Build a beacon frame that the firmware will broadcast periodically in 2361 * IBSS or HostAP modes. 2362 */ 2363static int 2364wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2365{ 2366 struct ifnet *ifp = sc->sc_ifp; 2367 struct ieee80211com *ic = ifp->if_l2com; 2368 struct wpi_tx_ring *ring = &sc->cmdq; 2369 struct wpi_tx_desc *desc; 2370 struct wpi_tx_data *data; 2371 struct wpi_tx_cmd *cmd; 2372 struct wpi_cmd_beacon *bcn; 2373 struct ieee80211_beacon_offsets bo; 2374 struct mbuf *m0; 2375 bus_addr_t physaddr; 2376 int error; 2377 2378 desc = &ring->desc[ring->cur]; 2379 data = &ring->data[ring->cur]; 2380 2381 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2382 if (m0 == NULL) { 2383 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2384 return ENOMEM; 2385 } 2386 2387 cmd = &ring->cmd[ring->cur]; 2388 cmd->code = WPI_CMD_SET_BEACON; 2389 cmd->flags = 0; 2390 cmd->qid = ring->qid; 2391 cmd->idx = ring->cur; 2392 2393 bcn = (struct wpi_cmd_beacon *)cmd->data; 2394 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2395 bcn->id = WPI_ID_BROADCAST; 2396 bcn->ofdm_mask = 0xff; 2397 bcn->cck_mask = 0x0f; 2398 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2399 bcn->len = htole16(m0->m_pkthdr.len); 2400 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2401 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2402 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2403 2404 /* save and trim IEEE802.11 header */ 2405 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2406 m_adj(m0, sizeof (struct ieee80211_frame)); 2407 2408 /* assume beacon frame is contiguous */ 2409 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2410 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2411 if (error != 0) { 2412 device_printf(sc->sc_dev, "could not map beacon\n"); 2413 m_freem(m0); 2414 return error; 2415 } 2416 2417 data->m = m0; 2418 2419 /* first scatter/gather segment is used by the beacon command */ 2420 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2421 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2422 ring->cur * sizeof (struct wpi_tx_cmd)); 2423 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2424 desc->segs[1].addr = htole32(physaddr); 2425 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2426 2427 /* kick cmd ring */ 2428 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2429 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2430 2431 return 0; 2432} 2433#endif 2434 2435static int 2436wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2437{ 2438 struct ieee80211com *ic = vap->iv_ic; 2439 struct ieee80211_node *ni = vap->iv_bss; 2440 struct wpi_node_info node; 2441 int error; 2442 2443 2444 /* update adapter's configuration */ 2445 sc->config.associd = 0; 2446 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2447 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2448 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2449 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2450 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2451 WPI_CONFIG_24GHZ); 2452 } else { 2453 sc->config.flags &= ~htole32(WPI_CONFIG_AUTO | 2454 WPI_CONFIG_24GHZ); 2455 } 2456 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2457 sc->config.cck_mask = 0; 2458 sc->config.ofdm_mask = 0x15; 2459 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2460 sc->config.cck_mask = 0x03; 2461 sc->config.ofdm_mask = 0; 2462 } else { 2463 /* XXX assume 802.11b/g */ 2464 sc->config.cck_mask = 0x0f; 2465 sc->config.ofdm_mask = 0x15; 2466 } 2467 2468 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2469 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2470 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2471 sizeof (struct wpi_config), 1); 2472 if (error != 0) { 2473 device_printf(sc->sc_dev, "could not configure\n"); 2474 return error; 2475 } 2476 2477 /* configuration has changed, set Tx power accordingly */ 2478 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2479 device_printf(sc->sc_dev, "could not set Tx power\n"); 2480 return error; 2481 } 2482 2483 /* add default node */ 2484 memset(&node, 0, sizeof node); 2485 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2486 node.id = WPI_ID_BSS; 2487 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2488 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2489 node.action = htole32(WPI_ACTION_SET_RATE); 2490 node.antenna = WPI_ANTENNA_BOTH; 2491 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2492 if (error != 0) 2493 device_printf(sc->sc_dev, "could not add BSS node\n"); 2494 2495 return (error); 2496} 2497 2498static int 2499wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2500{ 2501 struct ieee80211com *ic = vap->iv_ic; 2502 struct ieee80211_node *ni = vap->iv_bss; 2503 int error; 2504 2505 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2506 /* link LED blinks while monitoring */ 2507 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2508 return 0; 2509 } 2510 2511 wpi_enable_tsf(sc, ni); 2512 2513 /* update adapter's configuration */ 2514 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2515 /* short preamble/slot time are negotiated when associating */ 2516 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2517 WPI_CONFIG_SHSLOT); 2518 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2519 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2520 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2521 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2522 sc->config.filter |= htole32(WPI_FILTER_BSS); 2523 2524 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2525 2526 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2527 sc->config.flags)); 2528 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2529 wpi_config), 1); 2530 if (error != 0) { 2531 device_printf(sc->sc_dev, "could not update configuration\n"); 2532 return error; 2533 } 2534 2535 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2536 if (error != 0) { 2537 device_printf(sc->sc_dev, "could set txpower\n"); 2538 return error; 2539 } 2540 2541 /* link LED always on while associated */ 2542 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2543 2544 /* start automatic rate control timer */ 2545 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2546 2547 return (error); 2548} 2549 2550/* 2551 * Send a scan request to the firmware. Since this command is huge, we map it 2552 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2553 * much of this code is similar to that in wpi_cmd but because we must manually 2554 * construct the probe & channels, we duplicate what's needed here. XXX In the 2555 * future, this function should be modified to use wpi_cmd to help cleanup the 2556 * code base. 2557 */ 2558static int 2559wpi_scan(struct wpi_softc *sc) 2560{ 2561 struct ifnet *ifp = sc->sc_ifp; 2562 struct ieee80211com *ic = ifp->if_l2com; 2563 struct ieee80211_scan_state *ss = ic->ic_scan; 2564 struct wpi_tx_ring *ring = &sc->cmdq; 2565 struct wpi_tx_desc *desc; 2566 struct wpi_tx_data *data; 2567 struct wpi_tx_cmd *cmd; 2568 struct wpi_scan_hdr *hdr; 2569 struct wpi_scan_chan *chan; 2570 struct ieee80211_frame *wh; 2571 struct ieee80211_rateset *rs; 2572 struct ieee80211_channel *c; 2573 enum ieee80211_phymode mode; 2574 uint8_t *frm; 2575 int nrates, pktlen, error, i, nssid; 2576 bus_addr_t physaddr; 2577 2578 desc = &ring->desc[ring->cur]; 2579 data = &ring->data[ring->cur]; 2580 2581 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2582 if (data->m == NULL) { 2583 device_printf(sc->sc_dev, 2584 "could not allocate mbuf for scan command\n"); 2585 return ENOMEM; 2586 } 2587 2588 cmd = mtod(data->m, struct wpi_tx_cmd *); 2589 cmd->code = WPI_CMD_SCAN; 2590 cmd->flags = 0; 2591 cmd->qid = ring->qid; 2592 cmd->idx = ring->cur; 2593 2594 hdr = (struct wpi_scan_hdr *)cmd->data; 2595 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2596 2597 /* 2598 * Move to the next channel if no packets are received within 5 msecs 2599 * after sending the probe request (this helps to reduce the duration 2600 * of active scans). 2601 */ 2602 hdr->quiet = htole16(5); 2603 hdr->threshold = htole16(1); 2604 2605 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2606 /* send probe requests at 6Mbps */ 2607 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2608 2609 /* Enable crc checking */ 2610 hdr->promotion = htole16(1); 2611 } else { 2612 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2613 /* send probe requests at 1Mbps */ 2614 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2615 } 2616 hdr->tx.id = WPI_ID_BROADCAST; 2617 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2618 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2619 2620 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2621 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2622 for (i = 0; i < nssid; i++) { 2623 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2624 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2625 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2626 hdr->scan_essids[i].esslen); 2627#ifdef WPI_DEBUG 2628 if (wpi_debug & WPI_DEBUG_SCANNING) { 2629 printf("Scanning Essid: "); 2630 ieee80211_print_essid(hdr->scan_essids[i].essid, 2631 hdr->scan_essids[i].esslen); 2632 printf("\n"); 2633 } 2634#endif 2635 } 2636 2637 /* 2638 * Build a probe request frame. Most of the following code is a 2639 * copy & paste of what is done in net80211. 2640 */ 2641 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2642 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2643 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2644 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2645 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2646 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2647 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2648 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2649 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2650 2651 frm = (uint8_t *)(wh + 1); 2652 2653 /* add essid IE, the hardware will fill this in for us */ 2654 *frm++ = IEEE80211_ELEMID_SSID; 2655 *frm++ = 0; 2656 2657 mode = ieee80211_chan2mode(ic->ic_curchan); 2658 rs = &ic->ic_sup_rates[mode]; 2659 2660 /* add supported rates IE */ 2661 *frm++ = IEEE80211_ELEMID_RATES; 2662 nrates = rs->rs_nrates; 2663 if (nrates > IEEE80211_RATE_SIZE) 2664 nrates = IEEE80211_RATE_SIZE; 2665 *frm++ = nrates; 2666 memcpy(frm, rs->rs_rates, nrates); 2667 frm += nrates; 2668 2669 /* add supported xrates IE */ 2670 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2671 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2672 *frm++ = IEEE80211_ELEMID_XRATES; 2673 *frm++ = nrates; 2674 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2675 frm += nrates; 2676 } 2677 2678 /* setup length of probe request */ 2679 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2680 2681 /* 2682 * Construct information about the channel that we 2683 * want to scan. The firmware expects this to be directly 2684 * after the scan probe request 2685 */ 2686 c = ic->ic_curchan; 2687 chan = (struct wpi_scan_chan *)frm; 2688 chan->chan = ieee80211_chan2ieee(ic, c); 2689 chan->flags = 0; 2690 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2691 chan->flags |= WPI_CHAN_ACTIVE; 2692 if (nssid != 0) 2693 chan->flags |= WPI_CHAN_DIRECT; 2694 } 2695 chan->gain_dsp = 0x6e; /* Default level */ 2696 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2697 chan->active = htole16(10); 2698 chan->passive = htole16(ss->ss_maxdwell); 2699 chan->gain_radio = 0x3b; 2700 } else { 2701 chan->active = htole16(20); 2702 chan->passive = htole16(ss->ss_maxdwell); 2703 chan->gain_radio = 0x28; 2704 } 2705 2706 DPRINTFN(WPI_DEBUG_SCANNING, 2707 ("Scanning %u Passive: %d\n", 2708 chan->chan, 2709 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2710 2711 hdr->nchan++; 2712 chan++; 2713 2714 frm += sizeof (struct wpi_scan_chan); 2715#if 0 2716 // XXX All Channels.... 2717 for (c = &ic->ic_channels[1]; 2718 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2719 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2720 continue; 2721 2722 chan->chan = ieee80211_chan2ieee(ic, c); 2723 chan->flags = 0; 2724 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2725 chan->flags |= WPI_CHAN_ACTIVE; 2726 if (ic->ic_des_ssid[0].len != 0) 2727 chan->flags |= WPI_CHAN_DIRECT; 2728 } 2729 chan->gain_dsp = 0x6e; /* Default level */ 2730 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2731 chan->active = htole16(10); 2732 chan->passive = htole16(110); 2733 chan->gain_radio = 0x3b; 2734 } else { 2735 chan->active = htole16(20); 2736 chan->passive = htole16(120); 2737 chan->gain_radio = 0x28; 2738 } 2739 2740 DPRINTFN(WPI_DEBUG_SCANNING, 2741 ("Scanning %u Passive: %d\n", 2742 chan->chan, 2743 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2744 2745 hdr->nchan++; 2746 chan++; 2747 2748 frm += sizeof (struct wpi_scan_chan); 2749 } 2750#endif 2751 2752 hdr->len = htole16(frm - (uint8_t *)hdr); 2753 pktlen = frm - (uint8_t *)cmd; 2754 2755 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2756 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2757 if (error != 0) { 2758 device_printf(sc->sc_dev, "could not map scan command\n"); 2759 m_freem(data->m); 2760 data->m = NULL; 2761 return error; 2762 } 2763 2764 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2765 desc->segs[0].addr = htole32(physaddr); 2766 desc->segs[0].len = htole32(pktlen); 2767 2768 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2769 BUS_DMASYNC_PREWRITE); 2770 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2771 2772 /* kick cmd ring */ 2773 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2774 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2775 2776 sc->sc_scan_timer = 5; 2777 return 0; /* will be notified async. of failure/success */ 2778} 2779 2780/** 2781 * Configure the card to listen to a particular channel, this transisions the 2782 * card in to being able to receive frames from remote devices. 2783 */ 2784static int 2785wpi_config(struct wpi_softc *sc) 2786{ 2787 struct ifnet *ifp = sc->sc_ifp; 2788 struct ieee80211com *ic = ifp->if_l2com; 2789 struct wpi_power power; 2790 struct wpi_bluetooth bluetooth; 2791 struct wpi_node_info node; 2792 int error; 2793 2794 /* set power mode */ 2795 memset(&power, 0, sizeof power); 2796 power.flags = htole32(WPI_POWER_CAM|0x8); 2797 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2798 if (error != 0) { 2799 device_printf(sc->sc_dev, "could not set power mode\n"); 2800 return error; 2801 } 2802 2803 /* configure bluetooth coexistence */ 2804 memset(&bluetooth, 0, sizeof bluetooth); 2805 bluetooth.flags = 3; 2806 bluetooth.lead = 0xaa; 2807 bluetooth.kill = 1; 2808 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2809 0); 2810 if (error != 0) { 2811 device_printf(sc->sc_dev, 2812 "could not configure bluetooth coexistence\n"); 2813 return error; 2814 } 2815 2816 /* configure adapter */ 2817 memset(&sc->config, 0, sizeof (struct wpi_config)); 2818 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2819 /*set default channel*/ 2820 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2821 sc->config.flags = htole32(WPI_CONFIG_TSF); 2822 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2823 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2824 WPI_CONFIG_24GHZ); 2825 } 2826 sc->config.filter = 0; 2827 switch (ic->ic_opmode) { 2828 case IEEE80211_M_STA: 2829 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2830 sc->config.mode = WPI_MODE_STA; 2831 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2832 break; 2833 case IEEE80211_M_IBSS: 2834 case IEEE80211_M_AHDEMO: 2835 sc->config.mode = WPI_MODE_IBSS; 2836 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2837 WPI_FILTER_MULTICAST); 2838 break; 2839 case IEEE80211_M_HOSTAP: 2840 sc->config.mode = WPI_MODE_HOSTAP; 2841 break; 2842 case IEEE80211_M_MONITOR: 2843 sc->config.mode = WPI_MODE_MONITOR; 2844 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2845 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2846 break; 2847 default: 2848 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2849 return EINVAL; 2850 } 2851 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2852 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2853 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2854 sizeof (struct wpi_config), 0); 2855 if (error != 0) { 2856 device_printf(sc->sc_dev, "configure command failed\n"); 2857 return error; 2858 } 2859 2860 /* configuration has changed, set Tx power accordingly */ 2861 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2862 device_printf(sc->sc_dev, "could not set Tx power\n"); 2863 return error; 2864 } 2865 2866 /* add broadcast node */ 2867 memset(&node, 0, sizeof node); 2868 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2869 node.id = WPI_ID_BROADCAST; 2870 node.rate = wpi_plcp_signal(2); 2871 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2872 if (error != 0) { 2873 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2874 return error; 2875 } 2876 2877 /* Setup rate scalling */ 2878 error = wpi_mrr_setup(sc); 2879 if (error != 0) { 2880 device_printf(sc->sc_dev, "could not setup MRR\n"); 2881 return error; 2882 } 2883 2884 return 0; 2885} 2886 2887static void 2888wpi_stop_master(struct wpi_softc *sc) 2889{ 2890 uint32_t tmp; 2891 int ntries; 2892 2893 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2894 2895 tmp = WPI_READ(sc, WPI_RESET); 2896 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2897 2898 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2899 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2900 return; /* already asleep */ 2901 2902 for (ntries = 0; ntries < 100; ntries++) { 2903 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2904 break; 2905 DELAY(10); 2906 } 2907 if (ntries == 100) { 2908 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2909 } 2910} 2911 2912static int 2913wpi_power_up(struct wpi_softc *sc) 2914{ 2915 uint32_t tmp; 2916 int ntries; 2917 2918 wpi_mem_lock(sc); 2919 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2920 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2921 wpi_mem_unlock(sc); 2922 2923 for (ntries = 0; ntries < 5000; ntries++) { 2924 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2925 break; 2926 DELAY(10); 2927 } 2928 if (ntries == 5000) { 2929 device_printf(sc->sc_dev, 2930 "timeout waiting for NIC to power up\n"); 2931 return ETIMEDOUT; 2932 } 2933 return 0; 2934} 2935 2936static int 2937wpi_reset(struct wpi_softc *sc) 2938{ 2939 uint32_t tmp; 2940 int ntries; 2941 2942 DPRINTFN(WPI_DEBUG_HW, 2943 ("Resetting the card - clearing any uploaded firmware\n")); 2944 2945 /* clear any pending interrupts */ 2946 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2947 2948 tmp = WPI_READ(sc, WPI_PLL_CTL); 2949 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2950 2951 tmp = WPI_READ(sc, WPI_CHICKEN); 2952 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2953 2954 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2955 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2956 2957 /* wait for clock stabilization */ 2958 for (ntries = 0; ntries < 25000; ntries++) { 2959 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2960 break; 2961 DELAY(10); 2962 } 2963 if (ntries == 25000) { 2964 device_printf(sc->sc_dev, 2965 "timeout waiting for clock stabilization\n"); 2966 return ETIMEDOUT; 2967 } 2968 2969 /* initialize EEPROM */ 2970 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2971 2972 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2973 device_printf(sc->sc_dev, "EEPROM not found\n"); 2974 return EIO; 2975 } 2976 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2977 2978 return 0; 2979} 2980 2981static void 2982wpi_hw_config(struct wpi_softc *sc) 2983{ 2984 uint32_t rev, hw; 2985 2986 /* voodoo from the Linux "driver".. */ 2987 hw = WPI_READ(sc, WPI_HWCONFIG); 2988 2989 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2990 if ((rev & 0xc0) == 0x40) 2991 hw |= WPI_HW_ALM_MB; 2992 else if (!(rev & 0x80)) 2993 hw |= WPI_HW_ALM_MM; 2994 2995 if (sc->cap == 0x80) 2996 hw |= WPI_HW_SKU_MRC; 2997 2998 hw &= ~WPI_HW_REV_D; 2999 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3000 hw |= WPI_HW_REV_D; 3001 3002 if (sc->type > 1) 3003 hw |= WPI_HW_TYPE_B; 3004 3005 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3006} 3007 3008static void 3009wpi_rfkill_resume(struct wpi_softc *sc) 3010{ 3011 struct ifnet *ifp = sc->sc_ifp; 3012 struct ieee80211com *ic = ifp->if_l2com; 3013 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3014 int ntries; 3015 3016 /* enable firmware again */ 3017 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3018 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3019 3020 /* wait for thermal sensors to calibrate */ 3021 for (ntries = 0; ntries < 1000; ntries++) { 3022 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3023 break; 3024 DELAY(10); 3025 } 3026 3027 if (ntries == 1000) { 3028 device_printf(sc->sc_dev, 3029 "timeout waiting for thermal calibration\n"); 3030 return; 3031 } 3032 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3033 3034 if (wpi_config(sc) != 0) { 3035 device_printf(sc->sc_dev, "device config failed\n"); 3036 return; 3037 } 3038 3039 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3040 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3041 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3042 3043 if (vap != NULL) { 3044 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3045 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3046 ieee80211_beacon_miss(ic); 3047 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3048 } else 3049 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3050 } else { 3051 ieee80211_scan_next(vap); 3052 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3053 } 3054 } 3055 3056 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3057} 3058 3059static void 3060wpi_init_locked(struct wpi_softc *sc, int force) 3061{ 3062 struct ifnet *ifp = sc->sc_ifp; 3063 uint32_t tmp; 3064 int ntries, qid; 3065 3066 wpi_stop_locked(sc); 3067 (void)wpi_reset(sc); 3068 3069 wpi_mem_lock(sc); 3070 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3071 DELAY(20); 3072 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3073 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3074 wpi_mem_unlock(sc); 3075 3076 (void)wpi_power_up(sc); 3077 wpi_hw_config(sc); 3078 3079 /* init Rx ring */ 3080 wpi_mem_lock(sc); 3081 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3082 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3083 offsetof(struct wpi_shared, next)); 3084 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3085 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3086 wpi_mem_unlock(sc); 3087 3088 /* init Tx rings */ 3089 wpi_mem_lock(sc); 3090 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3091 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3092 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3093 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3094 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3095 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3096 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3097 3098 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3099 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3100 3101 for (qid = 0; qid < 6; qid++) { 3102 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3103 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3104 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3105 } 3106 wpi_mem_unlock(sc); 3107 3108 /* clear "radio off" and "disable command" bits (reversed logic) */ 3109 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3110 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3111 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3112 3113 /* clear any pending interrupts */ 3114 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3115 3116 /* enable interrupts */ 3117 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3118 3119 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3120 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3121 3122 if ((wpi_load_firmware(sc)) != 0) { 3123 device_printf(sc->sc_dev, 3124 "A problem occurred loading the firmware to the driver\n"); 3125 return; 3126 } 3127 3128 /* At this point the firmware is up and running. If the hardware 3129 * RF switch is turned off thermal calibration will fail, though 3130 * the card is still happy to continue to accept commands, catch 3131 * this case and schedule a task to watch for it to be turned on. 3132 */ 3133 wpi_mem_lock(sc); 3134 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3135 wpi_mem_unlock(sc); 3136 3137 if (!(tmp & 0x1)) { 3138 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3139 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3140 goto out; 3141 } 3142 3143 /* wait for thermal sensors to calibrate */ 3144 for (ntries = 0; ntries < 1000; ntries++) { 3145 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3146 break; 3147 DELAY(10); 3148 } 3149 3150 if (ntries == 1000) { 3151 device_printf(sc->sc_dev, 3152 "timeout waiting for thermal sensors calibration\n"); 3153 return; 3154 } 3155 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3156 3157 if (wpi_config(sc) != 0) { 3158 device_printf(sc->sc_dev, "device config failed\n"); 3159 return; 3160 } 3161 3162 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3163 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3164out: 3165 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3166} 3167 3168static void 3169wpi_init(void *arg) 3170{ 3171 struct wpi_softc *sc = arg; 3172 struct ifnet *ifp = sc->sc_ifp; 3173 struct ieee80211com *ic = ifp->if_l2com; 3174 3175 WPI_LOCK(sc); 3176 wpi_init_locked(sc, 0); 3177 WPI_UNLOCK(sc); 3178 3179 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3180 ieee80211_start_all(ic); /* start all vaps */ 3181} 3182 3183static void 3184wpi_stop_locked(struct wpi_softc *sc) 3185{ 3186 struct ifnet *ifp = sc->sc_ifp; 3187 uint32_t tmp; 3188 int ac; 3189 3190 sc->sc_tx_timer = 0; 3191 sc->sc_scan_timer = 0; 3192 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3193 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3194 callout_stop(&sc->watchdog_to); 3195 callout_stop(&sc->calib_to); 3196 3197 3198 /* disable interrupts */ 3199 WPI_WRITE(sc, WPI_MASK, 0); 3200 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3201 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3202 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3203 3204 wpi_mem_lock(sc); 3205 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3206 wpi_mem_unlock(sc); 3207 3208 /* reset all Tx rings */ 3209 for (ac = 0; ac < 4; ac++) 3210 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3211 wpi_reset_tx_ring(sc, &sc->cmdq); 3212 3213 /* reset Rx ring */ 3214 wpi_reset_rx_ring(sc, &sc->rxq); 3215 3216 wpi_mem_lock(sc); 3217 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3218 wpi_mem_unlock(sc); 3219 3220 DELAY(5); 3221 3222 wpi_stop_master(sc); 3223 3224 tmp = WPI_READ(sc, WPI_RESET); 3225 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3226 sc->flags &= ~WPI_FLAG_BUSY; 3227} 3228 3229static void 3230wpi_stop(struct wpi_softc *sc) 3231{ 3232 WPI_LOCK(sc); 3233 wpi_stop_locked(sc); 3234 WPI_UNLOCK(sc); 3235} 3236 3237static void 3238wpi_calib_timeout(void *arg) 3239{ 3240 struct wpi_softc *sc = arg; 3241 struct ifnet *ifp = sc->sc_ifp; 3242 struct ieee80211com *ic = ifp->if_l2com; 3243 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3244 int temp; 3245 3246 if (vap->iv_state != IEEE80211_S_RUN) 3247 return; 3248 3249 /* update sensor data */ 3250 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3251 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3252 3253 wpi_power_calibration(sc, temp); 3254 3255 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3256} 3257 3258/* 3259 * This function is called periodically (every 60 seconds) to adjust output 3260 * power to temperature changes. 3261 */ 3262static void 3263wpi_power_calibration(struct wpi_softc *sc, int temp) 3264{ 3265 struct ifnet *ifp = sc->sc_ifp; 3266 struct ieee80211com *ic = ifp->if_l2com; 3267 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3268 3269 /* sanity-check read value */ 3270 if (temp < -260 || temp > 25) { 3271 /* this can't be correct, ignore */ 3272 DPRINTFN(WPI_DEBUG_TEMP, 3273 ("out-of-range temperature reported: %d\n", temp)); 3274 return; 3275 } 3276 3277 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3278 3279 /* adjust Tx power if need be */ 3280 if (abs(temp - sc->temp) <= 6) 3281 return; 3282 3283 sc->temp = temp; 3284 3285 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3286 /* just warn, too bad for the automatic calibration... */ 3287 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3288 } 3289} 3290 3291/** 3292 * Read the eeprom to find out what channels are valid for the given 3293 * band and update net80211 with what we find. 3294 */ 3295static void 3296wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3297{ 3298 struct ifnet *ifp = sc->sc_ifp; 3299 struct ieee80211com *ic = ifp->if_l2com; 3300 const struct wpi_chan_band *band = &wpi_bands[n]; 3301 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3302 struct ieee80211_channel *c; 3303 int chan, i, passive; 3304 3305 wpi_read_prom_data(sc, band->addr, channels, 3306 band->nchan * sizeof (struct wpi_eeprom_chan)); 3307 3308 for (i = 0; i < band->nchan; i++) { 3309 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3310 DPRINTFN(WPI_DEBUG_HW, 3311 ("Channel Not Valid: %d, band %d\n", 3312 band->chan[i],n)); 3313 continue; 3314 } 3315 3316 passive = 0; 3317 chan = band->chan[i]; 3318 c = &ic->ic_channels[ic->ic_nchans++]; 3319 3320 /* is active scan allowed on this channel? */ 3321 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3322 passive = IEEE80211_CHAN_PASSIVE; 3323 } 3324 3325 if (n == 0) { /* 2GHz band */ 3326 c->ic_ieee = chan; 3327 c->ic_freq = ieee80211_ieee2mhz(chan, 3328 IEEE80211_CHAN_2GHZ); 3329 c->ic_flags = IEEE80211_CHAN_B | passive; 3330 3331 c = &ic->ic_channels[ic->ic_nchans++]; 3332 c->ic_ieee = chan; 3333 c->ic_freq = ieee80211_ieee2mhz(chan, 3334 IEEE80211_CHAN_2GHZ); 3335 c->ic_flags = IEEE80211_CHAN_G | passive; 3336 3337 } else { /* 5GHz band */ 3338 /* 3339 * Some 3945ABG adapters support channels 7, 8, 11 3340 * and 12 in the 2GHz *and* 5GHz bands. 3341 * Because of limitations in our net80211(9) stack, 3342 * we can't support these channels in 5GHz band. 3343 * XXX not true; just need to map to proper frequency 3344 */ 3345 if (chan <= 14) 3346 continue; 3347 3348 c->ic_ieee = chan; 3349 c->ic_freq = ieee80211_ieee2mhz(chan, 3350 IEEE80211_CHAN_5GHZ); 3351 c->ic_flags = IEEE80211_CHAN_A | passive; 3352 } 3353 3354 /* save maximum allowed power for this channel */ 3355 sc->maxpwr[chan] = channels[i].maxpwr; 3356 3357#if 0 3358 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3359 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3360 //ic->ic_channels[chan].ic_minpower... 3361 //ic->ic_channels[chan].ic_maxregtxpower... 3362#endif 3363 3364 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3365 " passive=%d, offset %d\n", chan, c->ic_freq, 3366 channels[i].flags, sc->maxpwr[chan], 3367 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3368 ic->ic_nchans)); 3369 } 3370} 3371 3372static void 3373wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3374{ 3375 struct wpi_power_group *group = &sc->groups[n]; 3376 struct wpi_eeprom_group rgroup; 3377 int i; 3378 3379 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3380 sizeof rgroup); 3381 3382 /* save power group information */ 3383 group->chan = rgroup.chan; 3384 group->maxpwr = rgroup.maxpwr; 3385 /* temperature at which the samples were taken */ 3386 group->temp = (int16_t)le16toh(rgroup.temp); 3387 3388 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3389 group->chan, group->maxpwr, group->temp)); 3390 3391 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3392 group->samples[i].index = rgroup.samples[i].index; 3393 group->samples[i].power = rgroup.samples[i].power; 3394 3395 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3396 group->samples[i].index, group->samples[i].power)); 3397 } 3398} 3399 3400/* 3401 * Update Tx power to match what is defined for channel `c'. 3402 */ 3403static int 3404wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3405{ 3406 struct ifnet *ifp = sc->sc_ifp; 3407 struct ieee80211com *ic = ifp->if_l2com; 3408 struct wpi_power_group *group; 3409 struct wpi_cmd_txpower txpower; 3410 u_int chan; 3411 int i; 3412 3413 /* get channel number */ 3414 chan = ieee80211_chan2ieee(ic, c); 3415 3416 /* find the power group to which this channel belongs */ 3417 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3418 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3419 if (chan <= group->chan) 3420 break; 3421 } else 3422 group = &sc->groups[0]; 3423 3424 memset(&txpower, 0, sizeof txpower); 3425 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3426 txpower.channel = htole16(chan); 3427 3428 /* set Tx power for all OFDM and CCK rates */ 3429 for (i = 0; i <= 11 ; i++) { 3430 /* retrieve Tx power for this channel/rate combination */ 3431 int idx = wpi_get_power_index(sc, group, c, 3432 wpi_ridx_to_rate[i]); 3433 3434 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3435 3436 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3437 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3438 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3439 } else { 3440 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3441 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3442 } 3443 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3444 chan, wpi_ridx_to_rate[i], idx)); 3445 } 3446 3447 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3448} 3449 3450/* 3451 * Determine Tx power index for a given channel/rate combination. 3452 * This takes into account the regulatory information from EEPROM and the 3453 * current temperature. 3454 */ 3455static int 3456wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3457 struct ieee80211_channel *c, int rate) 3458{ 3459/* fixed-point arithmetic division using a n-bit fractional part */ 3460#define fdivround(a, b, n) \ 3461 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3462 3463/* linear interpolation */ 3464#define interpolate(x, x1, y1, x2, y2, n) \ 3465 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3466 3467 struct ifnet *ifp = sc->sc_ifp; 3468 struct ieee80211com *ic = ifp->if_l2com; 3469 struct wpi_power_sample *sample; 3470 int pwr, idx; 3471 u_int chan; 3472 3473 /* get channel number */ 3474 chan = ieee80211_chan2ieee(ic, c); 3475 3476 /* default power is group's maximum power - 3dB */ 3477 pwr = group->maxpwr / 2; 3478 3479 /* decrease power for highest OFDM rates to reduce distortion */ 3480 switch (rate) { 3481 case 72: /* 36Mb/s */ 3482 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3483 break; 3484 case 96: /* 48Mb/s */ 3485 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3486 break; 3487 case 108: /* 54Mb/s */ 3488 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3489 break; 3490 } 3491 3492 /* never exceed channel's maximum allowed Tx power */ 3493 pwr = min(pwr, sc->maxpwr[chan]); 3494 3495 /* retrieve power index into gain tables from samples */ 3496 for (sample = group->samples; sample < &group->samples[3]; sample++) 3497 if (pwr > sample[1].power) 3498 break; 3499 /* fixed-point linear interpolation using a 19-bit fractional part */ 3500 idx = interpolate(pwr, sample[0].power, sample[0].index, 3501 sample[1].power, sample[1].index, 19); 3502 3503 /* 3504 * Adjust power index based on current temperature 3505 * - if colder than factory-calibrated: decreate output power 3506 * - if warmer than factory-calibrated: increase output power 3507 */ 3508 idx -= (sc->temp - group->temp) * 11 / 100; 3509 3510 /* decrease power for CCK rates (-5dB) */ 3511 if (!WPI_RATE_IS_OFDM(rate)) 3512 idx += 10; 3513 3514 /* keep power index in a valid range */ 3515 if (idx < 0) 3516 return 0; 3517 if (idx > WPI_MAX_PWR_INDEX) 3518 return WPI_MAX_PWR_INDEX; 3519 return idx; 3520 3521#undef interpolate 3522#undef fdivround 3523} 3524 3525/** 3526 * Called by net80211 framework to indicate that a scan 3527 * is starting. This function doesn't actually do the scan, 3528 * wpi_scan_curchan starts things off. This function is more 3529 * of an early warning from the framework we should get ready 3530 * for the scan. 3531 */ 3532static void 3533wpi_scan_start(struct ieee80211com *ic) 3534{ 3535 struct ifnet *ifp = ic->ic_ifp; 3536 struct wpi_softc *sc = ifp->if_softc; 3537 3538 WPI_LOCK(sc); 3539 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3540 WPI_UNLOCK(sc); 3541} 3542 3543/** 3544 * Called by the net80211 framework, indicates that the 3545 * scan has ended. If there is a scan in progress on the card 3546 * then it should be aborted. 3547 */ 3548static void 3549wpi_scan_end(struct ieee80211com *ic) 3550{ 3551 /* XXX ignore */ 3552} 3553 3554/** 3555 * Called by the net80211 framework to indicate to the driver 3556 * that the channel should be changed 3557 */ 3558static void 3559wpi_set_channel(struct ieee80211com *ic) 3560{ 3561 struct ifnet *ifp = ic->ic_ifp; 3562 struct wpi_softc *sc = ifp->if_softc; 3563 int error; 3564 3565 /* 3566 * Only need to set the channel in Monitor mode. AP scanning and auth 3567 * are already taken care of by their respective firmware commands. 3568 */ 3569 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3570 WPI_LOCK(sc); 3571 error = wpi_config(sc); 3572 WPI_UNLOCK(sc); 3573 if (error != 0) 3574 device_printf(sc->sc_dev, 3575 "error %d settting channel\n", error); 3576 } 3577} 3578 3579/** 3580 * Called by net80211 to indicate that we need to scan the current 3581 * channel. The channel is previously be set via the wpi_set_channel 3582 * callback. 3583 */ 3584static void 3585wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3586{ 3587 struct ieee80211vap *vap = ss->ss_vap; 3588 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3589 struct wpi_softc *sc = ifp->if_softc; 3590 3591 WPI_LOCK(sc); 3592 if (wpi_scan(sc)) 3593 ieee80211_cancel_scan(vap); 3594 WPI_UNLOCK(sc); 3595} 3596 3597/** 3598 * Called by the net80211 framework to indicate 3599 * the minimum dwell time has been met, terminate the scan. 3600 * We don't actually terminate the scan as the firmware will notify 3601 * us when it's finished and we have no way to interrupt it. 3602 */ 3603static void 3604wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3605{ 3606 /* NB: don't try to abort scan; wait for firmware to finish */ 3607} 3608 3609static void 3610wpi_hwreset(void *arg, int pending) 3611{ 3612 struct wpi_softc *sc = arg; 3613 3614 WPI_LOCK(sc); 3615 wpi_init_locked(sc, 0); 3616 WPI_UNLOCK(sc); 3617} 3618 3619static void 3620wpi_rfreset(void *arg, int pending) 3621{ 3622 struct wpi_softc *sc = arg; 3623 3624 WPI_LOCK(sc); 3625 wpi_rfkill_resume(sc); 3626 WPI_UNLOCK(sc); 3627} 3628 3629/* 3630 * Allocate DMA-safe memory for firmware transfer. 3631 */ 3632static int 3633wpi_alloc_fwmem(struct wpi_softc *sc) 3634{ 3635 /* allocate enough contiguous space to store text and data */ 3636 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3637 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3638 BUS_DMA_NOWAIT); 3639} 3640 3641static void 3642wpi_free_fwmem(struct wpi_softc *sc) 3643{ 3644 wpi_dma_contig_free(&sc->fw_dma); 3645} 3646 3647/** 3648 * Called every second, wpi_watchdog used by the watch dog timer 3649 * to check that the card is still alive 3650 */ 3651static void 3652wpi_watchdog(void *arg) 3653{ 3654 struct wpi_softc *sc = arg; 3655 struct ifnet *ifp = sc->sc_ifp; 3656 struct ieee80211com *ic = ifp->if_l2com; 3657 uint32_t tmp; 3658 3659 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3660 3661 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3662 /* No need to lock firmware memory */ 3663 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3664 3665 if ((tmp & 0x1) == 0) { 3666 /* Radio kill switch is still off */ 3667 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3668 return; 3669 } 3670 3671 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3672 ieee80211_runtask(ic, &sc->sc_radiotask); 3673 return; 3674 } 3675 3676 if (sc->sc_tx_timer > 0) { 3677 if (--sc->sc_tx_timer == 0) { 3678 device_printf(sc->sc_dev,"device timeout\n"); 3679 ifp->if_oerrors++; 3680 ieee80211_runtask(ic, &sc->sc_restarttask); 3681 } 3682 } 3683 if (sc->sc_scan_timer > 0) { 3684 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3685 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3686 device_printf(sc->sc_dev,"scan timeout\n"); 3687 ieee80211_cancel_scan(vap); 3688 ieee80211_runtask(ic, &sc->sc_restarttask); 3689 } 3690 } 3691 3692 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3693 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3694} 3695 3696#ifdef WPI_DEBUG 3697static const char *wpi_cmd_str(int cmd) 3698{ 3699 switch (cmd) { 3700 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3701 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3702 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3703 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3704 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3705 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3706 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3707 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3708 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3709 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3710 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3711 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3712 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3713 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3714 3715 default: 3716 KASSERT(1, ("Unknown Command: %d\n", cmd)); 3717 return "UNKNOWN CMD"; /* Make the compiler happy */ 3718 } 3719} 3720#endif 3721 3722MODULE_DEPEND(wpi, pci, 1, 1, 1); 3723MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3724MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3725