if_wpi.c revision 216238
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: head/sys/dev/wpi/if_wpi.c 216238 2010-12-06 19:05:44Z bschmidt $"); 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 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 name[IFNAMSIZ], int unit, int opmode, 161 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 162 const uint8_t mac[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 void wpi_newassoc(struct ieee80211_node *, int); 178static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 179static void wpi_mem_lock(struct wpi_softc *); 180static void wpi_mem_unlock(struct wpi_softc *); 181static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 182static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 183static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 184 const uint32_t *, int); 185static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 186static int wpi_alloc_fwmem(struct wpi_softc *); 187static void wpi_free_fwmem(struct wpi_softc *); 188static int wpi_load_firmware(struct wpi_softc *); 189static void wpi_unload_firmware(struct wpi_softc *); 190static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 191static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 192 struct wpi_rx_data *); 193static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 194static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 195static void wpi_notif_intr(struct wpi_softc *); 196static void wpi_intr(void *); 197static uint8_t wpi_plcp_signal(int); 198static void wpi_watchdog(void *); 199static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 200 struct ieee80211_node *, int); 201static void wpi_start(struct ifnet *); 202static void wpi_start_locked(struct ifnet *); 203static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 204 const struct ieee80211_bpf_params *); 205static void wpi_scan_start(struct ieee80211com *); 206static void wpi_scan_end(struct ieee80211com *); 207static void wpi_set_channel(struct ieee80211com *); 208static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 209static void wpi_scan_mindwell(struct ieee80211_scan_state *); 210static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 211static void wpi_read_eeprom(struct wpi_softc *, 212 uint8_t macaddr[IEEE80211_ADDR_LEN]); 213static void wpi_read_eeprom_channels(struct wpi_softc *, int); 214static void wpi_read_eeprom_group(struct wpi_softc *, int); 215static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 216static int wpi_wme_update(struct ieee80211com *); 217static int wpi_mrr_setup(struct wpi_softc *); 218static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 219static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 220#if 0 221static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 222#endif 223static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 224static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 225static int wpi_scan(struct wpi_softc *); 226static int wpi_config(struct wpi_softc *); 227static void wpi_stop_master(struct wpi_softc *); 228static int wpi_power_up(struct wpi_softc *); 229static int wpi_reset(struct wpi_softc *); 230static void wpi_hwreset(void *, int); 231static void wpi_rfreset(void *, int); 232static void wpi_hw_config(struct wpi_softc *); 233static void wpi_init(void *); 234static void wpi_init_locked(struct wpi_softc *, int); 235static void wpi_stop(struct wpi_softc *); 236static void wpi_stop_locked(struct wpi_softc *); 237 238static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 239 int); 240static void wpi_calib_timeout(void *); 241static void wpi_power_calibration(struct wpi_softc *, int); 242static int wpi_get_power_index(struct wpi_softc *, 243 struct wpi_power_group *, struct ieee80211_channel *, int); 244#ifdef WPI_DEBUG 245static const char *wpi_cmd_str(int); 246#endif 247static int wpi_probe(device_t); 248static int wpi_attach(device_t); 249static int wpi_detach(device_t); 250static int wpi_shutdown(device_t); 251static int wpi_suspend(device_t); 252static int wpi_resume(device_t); 253 254 255static device_method_t wpi_methods[] = { 256 /* Device interface */ 257 DEVMETHOD(device_probe, wpi_probe), 258 DEVMETHOD(device_attach, wpi_attach), 259 DEVMETHOD(device_detach, wpi_detach), 260 DEVMETHOD(device_shutdown, wpi_shutdown), 261 DEVMETHOD(device_suspend, wpi_suspend), 262 DEVMETHOD(device_resume, wpi_resume), 263 264 { 0, 0 } 265}; 266 267static driver_t wpi_driver = { 268 "wpi", 269 wpi_methods, 270 sizeof (struct wpi_softc) 271}; 272 273static devclass_t wpi_devclass; 274 275DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0); 276 277static const uint8_t wpi_ridx_to_plcp[] = { 278 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 279 /* R1-R4 (ral/ural is R4-R1) */ 280 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 281 /* CCK: device-dependent */ 282 10, 20, 55, 110 283}; 284static const uint8_t wpi_ridx_to_rate[] = { 285 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 286 2, 4, 11, 22 /*CCK */ 287}; 288 289 290static int 291wpi_probe(device_t dev) 292{ 293 const struct wpi_ident *ident; 294 295 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 296 if (pci_get_vendor(dev) == ident->vendor && 297 pci_get_device(dev) == ident->device) { 298 device_set_desc(dev, ident->name); 299 return 0; 300 } 301 } 302 return ENXIO; 303} 304 305/** 306 * Load the firmare image from disk to the allocated dma buffer. 307 * we also maintain the reference to the firmware pointer as there 308 * is times where we may need to reload the firmware but we are not 309 * in a context that can access the filesystem (ie taskq cause by restart) 310 * 311 * @return 0 on success, an errno on failure 312 */ 313static int 314wpi_load_firmware(struct wpi_softc *sc) 315{ 316 const struct firmware *fp; 317 struct wpi_dma_info *dma = &sc->fw_dma; 318 const struct wpi_firmware_hdr *hdr; 319 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 320 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 321 int error; 322 323 DPRINTFN(WPI_DEBUG_FIRMWARE, 324 ("Attempting Loading Firmware from wpi_fw module\n")); 325 326 WPI_UNLOCK(sc); 327 328 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 329 device_printf(sc->sc_dev, 330 "could not load firmware image 'wpifw'\n"); 331 error = ENOENT; 332 WPI_LOCK(sc); 333 goto fail; 334 } 335 336 fp = sc->fw_fp; 337 338 WPI_LOCK(sc); 339 340 /* Validate the firmware is minimum a particular version */ 341 if (fp->version < WPI_FW_MINVERSION) { 342 device_printf(sc->sc_dev, 343 "firmware version is too old. Need %d, got %d\n", 344 WPI_FW_MINVERSION, 345 fp->version); 346 error = ENXIO; 347 goto fail; 348 } 349 350 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 351 device_printf(sc->sc_dev, 352 "firmware file too short: %zu bytes\n", fp->datasize); 353 error = ENXIO; 354 goto fail; 355 } 356 357 hdr = (const struct wpi_firmware_hdr *)fp->data; 358 359 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 360 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 361 362 rtextsz = le32toh(hdr->rtextsz); 363 rdatasz = le32toh(hdr->rdatasz); 364 itextsz = le32toh(hdr->itextsz); 365 idatasz = le32toh(hdr->idatasz); 366 btextsz = le32toh(hdr->btextsz); 367 368 /* check that all firmware segments are present */ 369 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 370 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 371 device_printf(sc->sc_dev, 372 "firmware file too short: %zu bytes\n", fp->datasize); 373 error = ENXIO; /* XXX appropriate error code? */ 374 goto fail; 375 } 376 377 /* get pointers to firmware segments */ 378 rtext = (const uint8_t *)(hdr + 1); 379 rdata = rtext + rtextsz; 380 itext = rdata + rdatasz; 381 idata = itext + itextsz; 382 btext = idata + idatasz; 383 384 DPRINTFN(WPI_DEBUG_FIRMWARE, 385 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 386 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 387 (le32toh(hdr->version) & 0xff000000) >> 24, 388 (le32toh(hdr->version) & 0x00ff0000) >> 16, 389 (le32toh(hdr->version) & 0x0000ffff), 390 rtextsz, rdatasz, 391 itextsz, idatasz, btextsz)); 392 393 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 394 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 395 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 396 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 397 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 398 399 /* sanity checks */ 400 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 401 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 402 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 403 idatasz > WPI_FW_INIT_DATA_MAXSZ || 404 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 405 (btextsz & 3) != 0) { 406 device_printf(sc->sc_dev, "firmware invalid\n"); 407 error = EINVAL; 408 goto fail; 409 } 410 411 /* copy initialization images into pre-allocated DMA-safe memory */ 412 memcpy(dma->vaddr, idata, idatasz); 413 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 414 415 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 416 417 /* tell adapter where to find initialization images */ 418 wpi_mem_lock(sc); 419 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 420 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 421 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 422 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 423 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 424 wpi_mem_unlock(sc); 425 426 /* load firmware boot code */ 427 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 428 device_printf(sc->sc_dev, "Failed to load microcode\n"); 429 goto fail; 430 } 431 432 /* now press "execute" */ 433 WPI_WRITE(sc, WPI_RESET, 0); 434 435 /* wait at most one second for the first alive notification */ 436 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 437 device_printf(sc->sc_dev, 438 "timeout waiting for adapter to initialize\n"); 439 goto fail; 440 } 441 442 /* copy runtime images into pre-allocated DMA-sage memory */ 443 memcpy(dma->vaddr, rdata, rdatasz); 444 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 445 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 446 447 /* tell adapter where to find runtime images */ 448 wpi_mem_lock(sc); 449 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 450 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 451 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 452 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 453 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 454 wpi_mem_unlock(sc); 455 456 /* wait at most one second for the first alive notification */ 457 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 458 device_printf(sc->sc_dev, 459 "timeout waiting for adapter to initialize2\n"); 460 goto fail; 461 } 462 463 DPRINTFN(WPI_DEBUG_FIRMWARE, 464 ("Firmware loaded to driver successfully\n")); 465 return error; 466fail: 467 wpi_unload_firmware(sc); 468 return error; 469} 470 471/** 472 * Free the referenced firmware image 473 */ 474static void 475wpi_unload_firmware(struct wpi_softc *sc) 476{ 477 478 if (sc->fw_fp) { 479 WPI_UNLOCK(sc); 480 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 481 WPI_LOCK(sc); 482 sc->fw_fp = NULL; 483 } 484} 485 486static int 487wpi_attach(device_t dev) 488{ 489 struct wpi_softc *sc = device_get_softc(dev); 490 struct ifnet *ifp; 491 struct ieee80211com *ic; 492 int ac, error, supportsa = 1; 493 uint32_t tmp; 494 const struct wpi_ident *ident; 495 uint8_t macaddr[IEEE80211_ADDR_LEN]; 496 497 sc->sc_dev = dev; 498 499 if (bootverbose || WPI_DEBUG_SET) 500 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 501 502 /* 503 * Some card's only support 802.11b/g not a, check to see if 504 * this is one such card. A 0x0 in the subdevice table indicates 505 * the entire subdevice range is to be ignored. 506 */ 507 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 508 if (ident->subdevice && 509 pci_get_subdevice(dev) == ident->subdevice) { 510 supportsa = 0; 511 break; 512 } 513 } 514 515 /* Create the tasks that can be queued */ 516 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc); 517 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc); 518 519 WPI_LOCK_INIT(sc); 520 521 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 522 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 523 524 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 525 device_printf(dev, "chip is in D%d power mode " 526 "-- setting to D0\n", pci_get_powerstate(dev)); 527 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 528 } 529 530 /* disable the retry timeout register */ 531 pci_write_config(dev, 0x41, 0, 1); 532 533 /* enable bus-mastering */ 534 pci_enable_busmaster(dev); 535 536 sc->mem_rid = PCIR_BAR(0); 537 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 538 RF_ACTIVE); 539 if (sc->mem == NULL) { 540 device_printf(dev, "could not allocate memory resource\n"); 541 error = ENOMEM; 542 goto fail; 543 } 544 545 sc->sc_st = rman_get_bustag(sc->mem); 546 sc->sc_sh = rman_get_bushandle(sc->mem); 547 548 sc->irq_rid = 0; 549 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 550 RF_ACTIVE | RF_SHAREABLE); 551 if (sc->irq == NULL) { 552 device_printf(dev, "could not allocate interrupt resource\n"); 553 error = ENOMEM; 554 goto fail; 555 } 556 557 /* 558 * Allocate DMA memory for firmware transfers. 559 */ 560 if ((error = wpi_alloc_fwmem(sc)) != 0) { 561 printf(": could not allocate firmware memory\n"); 562 error = ENOMEM; 563 goto fail; 564 } 565 566 /* 567 * Put adapter into a known state. 568 */ 569 if ((error = wpi_reset(sc)) != 0) { 570 device_printf(dev, "could not reset adapter\n"); 571 goto fail; 572 } 573 574 wpi_mem_lock(sc); 575 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 576 if (bootverbose || WPI_DEBUG_SET) 577 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 578 579 wpi_mem_unlock(sc); 580 581 /* Allocate shared page */ 582 if ((error = wpi_alloc_shared(sc)) != 0) { 583 device_printf(dev, "could not allocate shared page\n"); 584 goto fail; 585 } 586 587 /* tx data queues - 4 for QoS purposes */ 588 for (ac = 0; ac < WME_NUM_AC; ac++) { 589 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 590 if (error != 0) { 591 device_printf(dev, "could not allocate Tx ring %d\n",ac); 592 goto fail; 593 } 594 } 595 596 /* command queue to talk to the card's firmware */ 597 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 598 if (error != 0) { 599 device_printf(dev, "could not allocate command ring\n"); 600 goto fail; 601 } 602 603 /* receive data queue */ 604 error = wpi_alloc_rx_ring(sc, &sc->rxq); 605 if (error != 0) { 606 device_printf(dev, "could not allocate Rx ring\n"); 607 goto fail; 608 } 609 610 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 611 if (ifp == NULL) { 612 device_printf(dev, "can not if_alloc()\n"); 613 error = ENOMEM; 614 goto fail; 615 } 616 ic = ifp->if_l2com; 617 618 ic->ic_ifp = ifp; 619 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 620 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 621 622 /* set device capabilities */ 623 ic->ic_caps = 624 IEEE80211_C_STA /* station mode supported */ 625 | IEEE80211_C_MONITOR /* monitor mode supported */ 626 | IEEE80211_C_TXPMGT /* tx power management */ 627 | IEEE80211_C_SHSLOT /* short slot time supported */ 628 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 629 | IEEE80211_C_WPA /* 802.11i */ 630/* XXX looks like WME is partly supported? */ 631#if 0 632 | IEEE80211_C_IBSS /* IBSS mode support */ 633 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 634 | IEEE80211_C_WME /* 802.11e */ 635 | IEEE80211_C_HOSTAP /* Host access point mode */ 636#endif 637 ; 638 639 /* 640 * Read in the eeprom and also setup the channels for 641 * net80211. We don't set the rates as net80211 does this for us 642 */ 643 wpi_read_eeprom(sc, macaddr); 644 645 if (bootverbose || WPI_DEBUG_SET) { 646 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 647 device_printf(sc->sc_dev, "Hardware Type: %c\n", 648 sc->type > 1 ? 'B': '?'); 649 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 650 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 651 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 652 supportsa ? "does" : "does not"); 653 654 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 655 what sc->rev really represents - benjsc 20070615 */ 656 } 657 658 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 659 ifp->if_softc = sc; 660 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 661 ifp->if_init = wpi_init; 662 ifp->if_ioctl = wpi_ioctl; 663 ifp->if_start = wpi_start; 664 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 665 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 666 IFQ_SET_READY(&ifp->if_snd); 667 668 ieee80211_ifattach(ic, macaddr); 669 /* override default methods */ 670 ic->ic_raw_xmit = wpi_raw_xmit; 671 ic->ic_newassoc = wpi_newassoc; 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, 764 const char name[IFNAMSIZ], int unit, int 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 if (ring->data[i].m != NULL) 1057 m_freem(ring->data[i].m); 1058} 1059 1060static int 1061wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1062 int qid) 1063{ 1064 struct wpi_tx_data *data; 1065 int i, error; 1066 1067 ring->qid = qid; 1068 ring->count = count; 1069 ring->queued = 0; 1070 ring->cur = 0; 1071 ring->data = NULL; 1072 1073 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1074 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1075 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1076 1077 if (error != 0) { 1078 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1079 goto fail; 1080 } 1081 1082 /* update shared page with ring's base address */ 1083 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1084 1085 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1086 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1087 BUS_DMA_NOWAIT); 1088 1089 if (error != 0) { 1090 device_printf(sc->sc_dev, 1091 "could not allocate tx command DMA memory\n"); 1092 goto fail; 1093 } 1094 1095 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1096 M_NOWAIT | M_ZERO); 1097 if (ring->data == NULL) { 1098 device_printf(sc->sc_dev, 1099 "could not allocate tx data slots\n"); 1100 goto fail; 1101 } 1102 1103 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1104 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1105 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1106 &ring->data_dmat); 1107 if (error != 0) { 1108 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1109 goto fail; 1110 } 1111 1112 for (i = 0; i < count; i++) { 1113 data = &ring->data[i]; 1114 1115 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1116 if (error != 0) { 1117 device_printf(sc->sc_dev, 1118 "could not create tx buf DMA map\n"); 1119 goto fail; 1120 } 1121 bus_dmamap_sync(ring->data_dmat, data->map, 1122 BUS_DMASYNC_PREWRITE); 1123 } 1124 1125 return 0; 1126 1127fail: 1128 wpi_free_tx_ring(sc, ring); 1129 return error; 1130} 1131 1132static void 1133wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1134{ 1135 struct wpi_tx_data *data; 1136 int i, ntries; 1137 1138 wpi_mem_lock(sc); 1139 1140 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1141 for (ntries = 0; ntries < 100; ntries++) { 1142 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1143 break; 1144 DELAY(10); 1145 } 1146#ifdef WPI_DEBUG 1147 if (ntries == 100 && wpi_debug > 0) 1148 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1149 ring->qid); 1150#endif 1151 wpi_mem_unlock(sc); 1152 1153 for (i = 0; i < ring->count; i++) { 1154 data = &ring->data[i]; 1155 1156 if (data->m != NULL) { 1157 bus_dmamap_unload(ring->data_dmat, data->map); 1158 m_freem(data->m); 1159 data->m = NULL; 1160 } 1161 } 1162 1163 ring->queued = 0; 1164 ring->cur = 0; 1165} 1166 1167static void 1168wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1169{ 1170 struct wpi_tx_data *data; 1171 int i; 1172 1173 wpi_dma_contig_free(&ring->desc_dma); 1174 wpi_dma_contig_free(&ring->cmd_dma); 1175 1176 if (ring->data != NULL) { 1177 for (i = 0; i < ring->count; i++) { 1178 data = &ring->data[i]; 1179 1180 if (data->m != NULL) { 1181 bus_dmamap_sync(ring->data_dmat, data->map, 1182 BUS_DMASYNC_POSTWRITE); 1183 bus_dmamap_unload(ring->data_dmat, data->map); 1184 m_freem(data->m); 1185 data->m = NULL; 1186 } 1187 } 1188 free(ring->data, M_DEVBUF); 1189 } 1190 1191 if (ring->data_dmat != NULL) 1192 bus_dma_tag_destroy(ring->data_dmat); 1193} 1194 1195static int 1196wpi_shutdown(device_t dev) 1197{ 1198 struct wpi_softc *sc = device_get_softc(dev); 1199 1200 WPI_LOCK(sc); 1201 wpi_stop_locked(sc); 1202 wpi_unload_firmware(sc); 1203 WPI_UNLOCK(sc); 1204 1205 return 0; 1206} 1207 1208static int 1209wpi_suspend(device_t dev) 1210{ 1211 struct wpi_softc *sc = device_get_softc(dev); 1212 1213 wpi_stop(sc); 1214 return 0; 1215} 1216 1217static int 1218wpi_resume(device_t dev) 1219{ 1220 struct wpi_softc *sc = device_get_softc(dev); 1221 struct ifnet *ifp = sc->sc_ifp; 1222 1223 pci_write_config(dev, 0x41, 0, 1); 1224 1225 if (ifp->if_flags & IFF_UP) { 1226 wpi_init(ifp->if_softc); 1227 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1228 wpi_start(ifp); 1229 } 1230 return 0; 1231} 1232 1233/** 1234 * Called by net80211 when ever there is a change to 80211 state machine 1235 */ 1236static int 1237wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1238{ 1239 struct wpi_vap *wvp = WPI_VAP(vap); 1240 struct ieee80211com *ic = vap->iv_ic; 1241 struct ifnet *ifp = ic->ic_ifp; 1242 struct wpi_softc *sc = ifp->if_softc; 1243 int error; 1244 1245 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1246 ieee80211_state_name[vap->iv_state], 1247 ieee80211_state_name[nstate], sc->flags)); 1248 1249 IEEE80211_UNLOCK(ic); 1250 WPI_LOCK(sc); 1251 if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) { 1252 /* 1253 * On !INIT -> SCAN transitions, we need to clear any possible 1254 * knowledge about associations. 1255 */ 1256 error = wpi_config(sc); 1257 if (error != 0) { 1258 device_printf(sc->sc_dev, 1259 "%s: device config failed, error %d\n", 1260 __func__, error); 1261 } 1262 } 1263 if (nstate == IEEE80211_S_AUTH || 1264 (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) { 1265 /* 1266 * The node must be registered in the firmware before auth. 1267 * Also the associd must be cleared on RUN -> ASSOC 1268 * transitions. 1269 */ 1270 error = wpi_auth(sc, vap); 1271 if (error != 0) { 1272 device_printf(sc->sc_dev, 1273 "%s: could not move to auth state, error %d\n", 1274 __func__, error); 1275 } 1276 } 1277 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1278 error = wpi_run(sc, vap); 1279 if (error != 0) { 1280 device_printf(sc->sc_dev, 1281 "%s: could not move to run state, error %d\n", 1282 __func__, error); 1283 } 1284 } 1285 if (nstate == IEEE80211_S_RUN) { 1286 /* RUN -> RUN transition; just restart the timers */ 1287 wpi_calib_timeout(sc); 1288 /* XXX split out rate control timer */ 1289 } 1290 WPI_UNLOCK(sc); 1291 IEEE80211_LOCK(ic); 1292 return wvp->newstate(vap, nstate, arg); 1293} 1294 1295/* 1296 * Grab exclusive access to NIC memory. 1297 */ 1298static void 1299wpi_mem_lock(struct wpi_softc *sc) 1300{ 1301 int ntries; 1302 uint32_t tmp; 1303 1304 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1305 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1306 1307 /* spin until we actually get the lock */ 1308 for (ntries = 0; ntries < 100; ntries++) { 1309 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1310 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1311 break; 1312 DELAY(10); 1313 } 1314 if (ntries == 100) 1315 device_printf(sc->sc_dev, "could not lock memory\n"); 1316} 1317 1318/* 1319 * Release lock on NIC memory. 1320 */ 1321static void 1322wpi_mem_unlock(struct wpi_softc *sc) 1323{ 1324 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1325 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1326} 1327 1328static uint32_t 1329wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1330{ 1331 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1332 return WPI_READ(sc, WPI_READ_MEM_DATA); 1333} 1334 1335static void 1336wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1337{ 1338 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1339 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1340} 1341 1342static void 1343wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1344 const uint32_t *data, int wlen) 1345{ 1346 for (; wlen > 0; wlen--, data++, addr+=4) 1347 wpi_mem_write(sc, addr, *data); 1348} 1349 1350/* 1351 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1352 * using the traditional bit-bang method. Data is read up until len bytes have 1353 * been obtained. 1354 */ 1355static uint16_t 1356wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1357{ 1358 int ntries; 1359 uint32_t val; 1360 uint8_t *out = data; 1361 1362 wpi_mem_lock(sc); 1363 1364 for (; len > 0; len -= 2, addr++) { 1365 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1366 1367 for (ntries = 0; ntries < 10; ntries++) { 1368 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1369 break; 1370 DELAY(5); 1371 } 1372 1373 if (ntries == 10) { 1374 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1375 return ETIMEDOUT; 1376 } 1377 1378 *out++= val >> 16; 1379 if (len > 1) 1380 *out ++= val >> 24; 1381 } 1382 1383 wpi_mem_unlock(sc); 1384 1385 return 0; 1386} 1387 1388/* 1389 * The firmware text and data segments are transferred to the NIC using DMA. 1390 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1391 * where to find it. Once the NIC has copied the firmware into its internal 1392 * memory, we can free our local copy in the driver. 1393 */ 1394static int 1395wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1396{ 1397 int error, ntries; 1398 1399 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1400 1401 size /= sizeof(uint32_t); 1402 1403 wpi_mem_lock(sc); 1404 1405 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1406 (const uint32_t *)fw, size); 1407 1408 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1409 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1410 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1411 1412 /* run microcode */ 1413 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1414 1415 /* wait while the adapter is busy copying the firmware */ 1416 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1417 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1418 DPRINTFN(WPI_DEBUG_HW, 1419 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1420 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1421 if (status & WPI_TX_IDLE(6)) { 1422 DPRINTFN(WPI_DEBUG_HW, 1423 ("Status Match! - ntries = %d\n", ntries)); 1424 break; 1425 } 1426 DELAY(10); 1427 } 1428 if (ntries == 1000) { 1429 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1430 error = ETIMEDOUT; 1431 } 1432 1433 /* start the microcode executing */ 1434 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1435 1436 wpi_mem_unlock(sc); 1437 1438 return (error); 1439} 1440 1441static void 1442wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1443 struct wpi_rx_data *data) 1444{ 1445 struct ifnet *ifp = sc->sc_ifp; 1446 struct ieee80211com *ic = ifp->if_l2com; 1447 struct wpi_rx_ring *ring = &sc->rxq; 1448 struct wpi_rx_stat *stat; 1449 struct wpi_rx_head *head; 1450 struct wpi_rx_tail *tail; 1451 struct ieee80211_node *ni; 1452 struct mbuf *m, *mnew; 1453 bus_addr_t paddr; 1454 int error; 1455 1456 stat = (struct wpi_rx_stat *)(desc + 1); 1457 1458 if (stat->len > WPI_STAT_MAXLEN) { 1459 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1460 ifp->if_ierrors++; 1461 return; 1462 } 1463 1464 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1465 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1466 1467 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1468 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1469 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1470 (uintmax_t)le64toh(tail->tstamp))); 1471 1472 /* discard Rx frames with bad CRC early */ 1473 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1474 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1475 le32toh(tail->flags))); 1476 ifp->if_ierrors++; 1477 return; 1478 } 1479 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1480 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1481 le16toh(head->len))); 1482 ifp->if_ierrors++; 1483 return; 1484 } 1485 1486 /* XXX don't need mbuf, just dma buffer */ 1487 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1488 if (mnew == NULL) { 1489 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1490 __func__)); 1491 ifp->if_ierrors++; 1492 return; 1493 } 1494 error = bus_dmamap_load(ring->data_dmat, data->map, 1495 mtod(mnew, caddr_t), MJUMPAGESIZE, 1496 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1497 if (error != 0 && error != EFBIG) { 1498 device_printf(sc->sc_dev, 1499 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1500 m_freem(mnew); 1501 ifp->if_ierrors++; 1502 return; 1503 } 1504 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1505 1506 /* finalize mbuf and swap in new one */ 1507 m = data->m; 1508 m->m_pkthdr.rcvif = ifp; 1509 m->m_data = (caddr_t)(head + 1); 1510 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1511 1512 data->m = mnew; 1513 /* update Rx descriptor */ 1514 ring->desc[ring->cur] = htole32(paddr); 1515 1516 if (ieee80211_radiotap_active(ic)) { 1517 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1518 1519 tap->wr_flags = 0; 1520 tap->wr_chan_freq = 1521 htole16(ic->ic_channels[head->chan].ic_freq); 1522 tap->wr_chan_flags = 1523 htole16(ic->ic_channels[head->chan].ic_flags); 1524 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1525 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1526 tap->wr_tsft = tail->tstamp; 1527 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1528 switch (head->rate) { 1529 /* CCK rates */ 1530 case 10: tap->wr_rate = 2; break; 1531 case 20: tap->wr_rate = 4; break; 1532 case 55: tap->wr_rate = 11; break; 1533 case 110: tap->wr_rate = 22; break; 1534 /* OFDM rates */ 1535 case 0xd: tap->wr_rate = 12; break; 1536 case 0xf: tap->wr_rate = 18; break; 1537 case 0x5: tap->wr_rate = 24; break; 1538 case 0x7: tap->wr_rate = 36; break; 1539 case 0x9: tap->wr_rate = 48; break; 1540 case 0xb: tap->wr_rate = 72; break; 1541 case 0x1: tap->wr_rate = 96; break; 1542 case 0x3: tap->wr_rate = 108; break; 1543 /* unknown rate: should not happen */ 1544 default: tap->wr_rate = 0; 1545 } 1546 if (le16toh(head->flags) & 0x4) 1547 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1548 } 1549 1550 WPI_UNLOCK(sc); 1551 1552 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1553 if (ni != NULL) { 1554 (void) ieee80211_input(ni, m, stat->rssi, 0); 1555 ieee80211_free_node(ni); 1556 } else 1557 (void) ieee80211_input_all(ic, m, stat->rssi, 0); 1558 1559 WPI_LOCK(sc); 1560} 1561 1562static void 1563wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1564{ 1565 struct ifnet *ifp = sc->sc_ifp; 1566 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1567 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1568 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1569 struct ieee80211_node *ni = txdata->ni; 1570 struct ieee80211vap *vap = ni->ni_vap; 1571 int retrycnt = 0; 1572 1573 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1574 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1575 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1576 le32toh(stat->status))); 1577 1578 /* 1579 * Update rate control statistics for the node. 1580 * XXX we should not count mgmt frames since they're always sent at 1581 * the lowest available bit-rate. 1582 * XXX frames w/o ACK shouldn't be used either 1583 */ 1584 if (stat->ntries > 0) { 1585 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1586 retrycnt = 1; 1587 } 1588 ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS, 1589 &retrycnt, NULL); 1590 1591 /* XXX oerrors should only count errors !maxtries */ 1592 if ((le32toh(stat->status) & 0xff) != 1) 1593 ifp->if_oerrors++; 1594 else 1595 ifp->if_opackets++; 1596 1597 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1598 bus_dmamap_unload(ring->data_dmat, txdata->map); 1599 /* XXX handle M_TXCB? */ 1600 m_freem(txdata->m); 1601 txdata->m = NULL; 1602 ieee80211_free_node(txdata->ni); 1603 txdata->ni = NULL; 1604 1605 ring->queued--; 1606 1607 sc->sc_tx_timer = 0; 1608 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1609 wpi_start_locked(ifp); 1610} 1611 1612static void 1613wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1614{ 1615 struct wpi_tx_ring *ring = &sc->cmdq; 1616 struct wpi_tx_data *data; 1617 1618 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1619 "type=%s len=%d\n", desc->qid, desc->idx, 1620 desc->flags, wpi_cmd_str(desc->type), 1621 le32toh(desc->len))); 1622 1623 if ((desc->qid & 7) != 4) 1624 return; /* not a command ack */ 1625 1626 data = &ring->data[desc->idx]; 1627 1628 /* if the command was mapped in a mbuf, free it */ 1629 if (data->m != NULL) { 1630 bus_dmamap_unload(ring->data_dmat, data->map); 1631 m_freem(data->m); 1632 data->m = NULL; 1633 } 1634 1635 sc->flags &= ~WPI_FLAG_BUSY; 1636 wakeup(&ring->cmd[desc->idx]); 1637} 1638 1639static void 1640wpi_notif_intr(struct wpi_softc *sc) 1641{ 1642 struct ifnet *ifp = sc->sc_ifp; 1643 struct ieee80211com *ic = ifp->if_l2com; 1644 struct wpi_rx_desc *desc; 1645 struct wpi_rx_data *data; 1646 uint32_t hw; 1647 1648 hw = le32toh(sc->shared->next); 1649 while (sc->rxq.cur != hw) { 1650 data = &sc->rxq.data[sc->rxq.cur]; 1651 desc = (void *)data->m->m_ext.ext_buf; 1652 1653 DPRINTFN(WPI_DEBUG_NOTIFY, 1654 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1655 desc->qid, 1656 desc->idx, 1657 desc->flags, 1658 desc->type, 1659 le32toh(desc->len))); 1660 1661 if (!(desc->qid & 0x80)) /* reply to a command */ 1662 wpi_cmd_intr(sc, desc); 1663 1664 switch (desc->type) { 1665 case WPI_RX_DONE: 1666 /* a 802.11 frame was received */ 1667 wpi_rx_intr(sc, desc, data); 1668 break; 1669 1670 case WPI_TX_DONE: 1671 /* a 802.11 frame has been transmitted */ 1672 wpi_tx_intr(sc, desc); 1673 break; 1674 1675 case WPI_UC_READY: 1676 { 1677 struct wpi_ucode_info *uc = 1678 (struct wpi_ucode_info *)(desc + 1); 1679 1680 /* the microcontroller is ready */ 1681 DPRINTF(("microcode alive notification version %x " 1682 "alive %x\n", le32toh(uc->version), 1683 le32toh(uc->valid))); 1684 1685 if (le32toh(uc->valid) != 1) { 1686 device_printf(sc->sc_dev, 1687 "microcontroller initialization failed\n"); 1688 wpi_stop_locked(sc); 1689 } 1690 break; 1691 } 1692 case WPI_STATE_CHANGED: 1693 { 1694 uint32_t *status = (uint32_t *)(desc + 1); 1695 1696 /* enabled/disabled notification */ 1697 DPRINTF(("state changed to %x\n", le32toh(*status))); 1698 1699 if (le32toh(*status) & 1) { 1700 device_printf(sc->sc_dev, 1701 "Radio transmitter is switched off\n"); 1702 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1703 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1704 /* Disable firmware commands */ 1705 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1706 } 1707 break; 1708 } 1709 case WPI_START_SCAN: 1710 { 1711#ifdef WPI_DEBUG 1712 struct wpi_start_scan *scan = 1713 (struct wpi_start_scan *)(desc + 1); 1714#endif 1715 1716 DPRINTFN(WPI_DEBUG_SCANNING, 1717 ("scanning channel %d status %x\n", 1718 scan->chan, le32toh(scan->status))); 1719 break; 1720 } 1721 case WPI_STOP_SCAN: 1722 { 1723#ifdef WPI_DEBUG 1724 struct wpi_stop_scan *scan = 1725 (struct wpi_stop_scan *)(desc + 1); 1726#endif 1727 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1728 1729 DPRINTFN(WPI_DEBUG_SCANNING, 1730 ("scan finished nchan=%d status=%d chan=%d\n", 1731 scan->nchan, scan->status, scan->chan)); 1732 1733 sc->sc_scan_timer = 0; 1734 ieee80211_scan_next(vap); 1735 break; 1736 } 1737 case WPI_MISSED_BEACON: 1738 { 1739 struct wpi_missed_beacon *beacon = 1740 (struct wpi_missed_beacon *)(desc + 1); 1741 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1742 1743 if (le32toh(beacon->consecutive) >= 1744 vap->iv_bmissthreshold) { 1745 DPRINTF(("Beacon miss: %u >= %u\n", 1746 le32toh(beacon->consecutive), 1747 vap->iv_bmissthreshold)); 1748 ieee80211_beacon_miss(ic); 1749 } 1750 break; 1751 } 1752 } 1753 1754 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1755 } 1756 1757 /* tell the firmware what we have processed */ 1758 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1759 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1760} 1761 1762static void 1763wpi_intr(void *arg) 1764{ 1765 struct wpi_softc *sc = arg; 1766 uint32_t r; 1767 1768 WPI_LOCK(sc); 1769 1770 r = WPI_READ(sc, WPI_INTR); 1771 if (r == 0 || r == 0xffffffff) { 1772 WPI_UNLOCK(sc); 1773 return; 1774 } 1775 1776 /* disable interrupts */ 1777 WPI_WRITE(sc, WPI_MASK, 0); 1778 /* ack interrupts */ 1779 WPI_WRITE(sc, WPI_INTR, r); 1780 1781 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1782 struct ifnet *ifp = sc->sc_ifp; 1783 struct ieee80211com *ic = ifp->if_l2com; 1784 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1785 1786 device_printf(sc->sc_dev, "fatal firmware error\n"); 1787 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1788 "(Hardware Error)")); 1789 if (vap != NULL) 1790 ieee80211_cancel_scan(vap); 1791 ieee80211_runtask(ic, &sc->sc_restarttask); 1792 sc->flags &= ~WPI_FLAG_BUSY; 1793 WPI_UNLOCK(sc); 1794 return; 1795 } 1796 1797 if (r & WPI_RX_INTR) 1798 wpi_notif_intr(sc); 1799 1800 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1801 wakeup(sc); 1802 1803 /* re-enable interrupts */ 1804 if (sc->sc_ifp->if_flags & IFF_UP) 1805 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1806 1807 WPI_UNLOCK(sc); 1808} 1809 1810static uint8_t 1811wpi_plcp_signal(int rate) 1812{ 1813 switch (rate) { 1814 /* CCK rates (returned values are device-dependent) */ 1815 case 2: return 10; 1816 case 4: return 20; 1817 case 11: return 55; 1818 case 22: return 110; 1819 1820 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1821 /* R1-R4 (ral/ural is R4-R1) */ 1822 case 12: return 0xd; 1823 case 18: return 0xf; 1824 case 24: return 0x5; 1825 case 36: return 0x7; 1826 case 48: return 0x9; 1827 case 72: return 0xb; 1828 case 96: return 0x1; 1829 case 108: return 0x3; 1830 1831 /* unsupported rates (should not get there) */ 1832 default: return 0; 1833 } 1834} 1835 1836/* quickly determine if a given rate is CCK or OFDM */ 1837#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1838 1839/* 1840 * Construct the data packet for a transmit buffer and acutally put 1841 * the buffer onto the transmit ring, kicking the card to process the 1842 * the buffer. 1843 */ 1844static int 1845wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1846 int ac) 1847{ 1848 struct ieee80211vap *vap = ni->ni_vap; 1849 struct ifnet *ifp = sc->sc_ifp; 1850 struct ieee80211com *ic = ifp->if_l2com; 1851 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1852 struct wpi_tx_ring *ring = &sc->txq[ac]; 1853 struct wpi_tx_desc *desc; 1854 struct wpi_tx_data *data; 1855 struct wpi_tx_cmd *cmd; 1856 struct wpi_cmd_data *tx; 1857 struct ieee80211_frame *wh; 1858 const struct ieee80211_txparam *tp; 1859 struct ieee80211_key *k; 1860 struct mbuf *mnew; 1861 int i, error, nsegs, rate, hdrlen, ismcast; 1862 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1863 1864 desc = &ring->desc[ring->cur]; 1865 data = &ring->data[ring->cur]; 1866 1867 wh = mtod(m0, struct ieee80211_frame *); 1868 1869 hdrlen = ieee80211_hdrsize(wh); 1870 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1871 1872 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1873 k = ieee80211_crypto_encap(ni, m0); 1874 if (k == NULL) { 1875 m_freem(m0); 1876 return ENOBUFS; 1877 } 1878 /* packet header may have moved, reset our local pointer */ 1879 wh = mtod(m0, struct ieee80211_frame *); 1880 } 1881 1882 cmd = &ring->cmd[ring->cur]; 1883 cmd->code = WPI_CMD_TX_DATA; 1884 cmd->flags = 0; 1885 cmd->qid = ring->qid; 1886 cmd->idx = ring->cur; 1887 1888 tx = (struct wpi_cmd_data *)cmd->data; 1889 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1890 tx->timeout = htole16(0); 1891 tx->ofdm_mask = 0xff; 1892 tx->cck_mask = 0x0f; 1893 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1894 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1895 tx->len = htole16(m0->m_pkthdr.len); 1896 1897 if (!ismcast) { 1898 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1899 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1900 tx->flags |= htole32(WPI_TX_NEED_ACK); 1901 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1902 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1903 tx->rts_ntries = 7; 1904 } 1905 } 1906 /* pick a rate */ 1907 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1908 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1909 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1910 /* tell h/w to set timestamp in probe responses */ 1911 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1912 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1913 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1914 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1915 tx->timeout = htole16(3); 1916 else 1917 tx->timeout = htole16(2); 1918 rate = tp->mgmtrate; 1919 } else if (ismcast) { 1920 rate = tp->mcastrate; 1921 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1922 rate = tp->ucastrate; 1923 } else { 1924 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1925 rate = ni->ni_txrate; 1926 } 1927 tx->rate = wpi_plcp_signal(rate); 1928 1929 /* be very persistant at sending frames out */ 1930#if 0 1931 tx->data_ntries = tp->maxretry; 1932#else 1933 tx->data_ntries = 15; /* XXX way too high */ 1934#endif 1935 1936 if (ieee80211_radiotap_active_vap(vap)) { 1937 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1938 tap->wt_flags = 0; 1939 tap->wt_rate = rate; 1940 tap->wt_hwqueue = ac; 1941 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1942 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1943 1944 ieee80211_radiotap_tx(vap, m0); 1945 } 1946 1947 /* save and trim IEEE802.11 header */ 1948 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1949 m_adj(m0, hdrlen); 1950 1951 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 1952 &nsegs, BUS_DMA_NOWAIT); 1953 if (error != 0 && error != EFBIG) { 1954 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1955 error); 1956 m_freem(m0); 1957 return error; 1958 } 1959 if (error != 0) { 1960 /* XXX use m_collapse */ 1961 mnew = m_defrag(m0, M_DONTWAIT); 1962 if (mnew == NULL) { 1963 device_printf(sc->sc_dev, 1964 "could not defragment mbuf\n"); 1965 m_freem(m0); 1966 return ENOBUFS; 1967 } 1968 m0 = mnew; 1969 1970 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 1971 m0, segs, &nsegs, BUS_DMA_NOWAIT); 1972 if (error != 0) { 1973 device_printf(sc->sc_dev, 1974 "could not map mbuf (error %d)\n", error); 1975 m_freem(m0); 1976 return error; 1977 } 1978 } 1979 1980 data->m = m0; 1981 data->ni = ni; 1982 1983 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1984 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 1985 1986 /* first scatter/gather segment is used by the tx data command */ 1987 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1988 (1 + nsegs) << 24); 1989 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1990 ring->cur * sizeof (struct wpi_tx_cmd)); 1991 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1992 for (i = 1; i <= nsegs; i++) { 1993 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 1994 desc->segs[i].len = htole32(segs[i - 1].ds_len); 1995 } 1996 1997 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1998 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1999 BUS_DMASYNC_PREWRITE); 2000 2001 ring->queued++; 2002 2003 /* kick ring */ 2004 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2005 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2006 2007 return 0; 2008} 2009 2010/** 2011 * Process data waiting to be sent on the IFNET output queue 2012 */ 2013static void 2014wpi_start(struct ifnet *ifp) 2015{ 2016 struct wpi_softc *sc = ifp->if_softc; 2017 2018 WPI_LOCK(sc); 2019 wpi_start_locked(ifp); 2020 WPI_UNLOCK(sc); 2021} 2022 2023static void 2024wpi_start_locked(struct ifnet *ifp) 2025{ 2026 struct wpi_softc *sc = ifp->if_softc; 2027 struct ieee80211_node *ni; 2028 struct mbuf *m; 2029 int ac; 2030 2031 WPI_LOCK_ASSERT(sc); 2032 2033 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2034 return; 2035 2036 for (;;) { 2037 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2038 if (m == NULL) 2039 break; 2040 ac = M_WME_GETAC(m); 2041 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2042 /* there is no place left in this ring */ 2043 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2044 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2045 break; 2046 } 2047 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2048 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2049 ieee80211_free_node(ni); 2050 ifp->if_oerrors++; 2051 break; 2052 } 2053 sc->sc_tx_timer = 5; 2054 } 2055} 2056 2057static int 2058wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2059 const struct ieee80211_bpf_params *params) 2060{ 2061 struct ieee80211com *ic = ni->ni_ic; 2062 struct ifnet *ifp = ic->ic_ifp; 2063 struct wpi_softc *sc = ifp->if_softc; 2064 2065 /* prevent management frames from being sent if we're not ready */ 2066 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2067 m_freem(m); 2068 ieee80211_free_node(ni); 2069 return ENETDOWN; 2070 } 2071 WPI_LOCK(sc); 2072 2073 /* management frames go into ring 0 */ 2074 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2075 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2076 m_freem(m); 2077 WPI_UNLOCK(sc); 2078 ieee80211_free_node(ni); 2079 return ENOBUFS; /* XXX */ 2080 } 2081 2082 ifp->if_opackets++; 2083 if (wpi_tx_data(sc, m, ni, 0) != 0) 2084 goto bad; 2085 sc->sc_tx_timer = 5; 2086 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2087 2088 WPI_UNLOCK(sc); 2089 return 0; 2090bad: 2091 ifp->if_oerrors++; 2092 WPI_UNLOCK(sc); 2093 ieee80211_free_node(ni); 2094 return EIO; /* XXX */ 2095} 2096 2097static int 2098wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2099{ 2100 struct wpi_softc *sc = ifp->if_softc; 2101 struct ieee80211com *ic = ifp->if_l2com; 2102 struct ifreq *ifr = (struct ifreq *) data; 2103 int error = 0, startall = 0; 2104 2105 switch (cmd) { 2106 case SIOCSIFFLAGS: 2107 WPI_LOCK(sc); 2108 if ((ifp->if_flags & IFF_UP)) { 2109 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2110 wpi_init_locked(sc, 0); 2111 startall = 1; 2112 } 2113 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2114 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2115 wpi_stop_locked(sc); 2116 WPI_UNLOCK(sc); 2117 if (startall) 2118 ieee80211_start_all(ic); 2119 break; 2120 case SIOCGIFMEDIA: 2121 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2122 break; 2123 case SIOCGIFADDR: 2124 error = ether_ioctl(ifp, cmd, data); 2125 break; 2126 default: 2127 error = EINVAL; 2128 break; 2129 } 2130 return error; 2131} 2132 2133/* 2134 * Extract various information from EEPROM. 2135 */ 2136static void 2137wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2138{ 2139 int i; 2140 2141 /* read the hardware capabilities, revision and SKU type */ 2142 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2143 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2144 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2145 2146 /* read the regulatory domain */ 2147 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2148 2149 /* read in the hw MAC address */ 2150 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2151 2152 /* read the list of authorized channels */ 2153 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2154 wpi_read_eeprom_channels(sc,i); 2155 2156 /* read the power level calibration info for each group */ 2157 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2158 wpi_read_eeprom_group(sc,i); 2159} 2160 2161/* 2162 * Send a command to the firmware. 2163 */ 2164static int 2165wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2166{ 2167 struct wpi_tx_ring *ring = &sc->cmdq; 2168 struct wpi_tx_desc *desc; 2169 struct wpi_tx_cmd *cmd; 2170 2171#ifdef WPI_DEBUG 2172 if (!async) { 2173 WPI_LOCK_ASSERT(sc); 2174 } 2175#endif 2176 2177 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2178 async)); 2179 2180 if (sc->flags & WPI_FLAG_BUSY) { 2181 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2182 __func__, code); 2183 return EAGAIN; 2184 } 2185 sc->flags|= WPI_FLAG_BUSY; 2186 2187 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2188 code, size)); 2189 2190 desc = &ring->desc[ring->cur]; 2191 cmd = &ring->cmd[ring->cur]; 2192 2193 cmd->code = code; 2194 cmd->flags = 0; 2195 cmd->qid = ring->qid; 2196 cmd->idx = ring->cur; 2197 memcpy(cmd->data, buf, size); 2198 2199 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2200 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2201 ring->cur * sizeof (struct wpi_tx_cmd)); 2202 desc->segs[0].len = htole32(4 + size); 2203 2204 /* kick cmd ring */ 2205 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2206 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2207 2208 if (async) { 2209 sc->flags &= ~ WPI_FLAG_BUSY; 2210 return 0; 2211 } 2212 2213 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2214} 2215 2216static int 2217wpi_wme_update(struct ieee80211com *ic) 2218{ 2219#define WPI_EXP2(v) htole16((1 << (v)) - 1) 2220#define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2221 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2222 const struct wmeParams *wmep; 2223 struct wpi_wme_setup wme; 2224 int ac; 2225 2226 /* don't override default WME values if WME is not actually enabled */ 2227 if (!(ic->ic_flags & IEEE80211_F_WME)) 2228 return 0; 2229 2230 wme.flags = 0; 2231 for (ac = 0; ac < WME_NUM_AC; ac++) { 2232 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2233 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2234 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2235 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2236 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2237 2238 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2239 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2240 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2241 } 2242 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2243#undef WPI_USEC 2244#undef WPI_EXP2 2245} 2246 2247/* 2248 * Configure h/w multi-rate retries. 2249 */ 2250static int 2251wpi_mrr_setup(struct wpi_softc *sc) 2252{ 2253 struct ifnet *ifp = sc->sc_ifp; 2254 struct ieee80211com *ic = ifp->if_l2com; 2255 struct wpi_mrr_setup mrr; 2256 int i, error; 2257 2258 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2259 2260 /* CCK rates (not used with 802.11a) */ 2261 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2262 mrr.rates[i].flags = 0; 2263 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2264 /* fallback to the immediate lower CCK rate (if any) */ 2265 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2266 /* try one time at this rate before falling back to "next" */ 2267 mrr.rates[i].ntries = 1; 2268 } 2269 2270 /* OFDM rates (not used with 802.11b) */ 2271 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2272 mrr.rates[i].flags = 0; 2273 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2274 /* fallback to the immediate lower OFDM rate (if any) */ 2275 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2276 mrr.rates[i].next = (i == WPI_OFDM6) ? 2277 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2278 WPI_OFDM6 : WPI_CCK2) : 2279 i - 1; 2280 /* try one time at this rate before falling back to "next" */ 2281 mrr.rates[i].ntries = 1; 2282 } 2283 2284 /* setup MRR for control frames */ 2285 mrr.which = htole32(WPI_MRR_CTL); 2286 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2287 if (error != 0) { 2288 device_printf(sc->sc_dev, 2289 "could not setup MRR for control frames\n"); 2290 return error; 2291 } 2292 2293 /* setup MRR for data frames */ 2294 mrr.which = htole32(WPI_MRR_DATA); 2295 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2296 if (error != 0) { 2297 device_printf(sc->sc_dev, 2298 "could not setup MRR for data frames\n"); 2299 return error; 2300 } 2301 2302 return 0; 2303} 2304 2305static void 2306wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2307{ 2308 struct wpi_cmd_led led; 2309 2310 led.which = which; 2311 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2312 led.off = off; 2313 led.on = on; 2314 2315 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2316} 2317 2318static void 2319wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2320{ 2321 struct wpi_cmd_tsf tsf; 2322 uint64_t val, mod; 2323 2324 memset(&tsf, 0, sizeof tsf); 2325 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2326 tsf.bintval = htole16(ni->ni_intval); 2327 tsf.lintval = htole16(10); 2328 2329 /* compute remaining time until next beacon */ 2330 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2331 mod = le64toh(tsf.tstamp) % val; 2332 tsf.binitval = htole32((uint32_t)(val - mod)); 2333 2334 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2335 device_printf(sc->sc_dev, "could not enable TSF\n"); 2336} 2337 2338#if 0 2339/* 2340 * Build a beacon frame that the firmware will broadcast periodically in 2341 * IBSS or HostAP modes. 2342 */ 2343static int 2344wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2345{ 2346 struct ifnet *ifp = sc->sc_ifp; 2347 struct ieee80211com *ic = ifp->if_l2com; 2348 struct wpi_tx_ring *ring = &sc->cmdq; 2349 struct wpi_tx_desc *desc; 2350 struct wpi_tx_data *data; 2351 struct wpi_tx_cmd *cmd; 2352 struct wpi_cmd_beacon *bcn; 2353 struct ieee80211_beacon_offsets bo; 2354 struct mbuf *m0; 2355 bus_addr_t physaddr; 2356 int error; 2357 2358 desc = &ring->desc[ring->cur]; 2359 data = &ring->data[ring->cur]; 2360 2361 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2362 if (m0 == NULL) { 2363 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2364 return ENOMEM; 2365 } 2366 2367 cmd = &ring->cmd[ring->cur]; 2368 cmd->code = WPI_CMD_SET_BEACON; 2369 cmd->flags = 0; 2370 cmd->qid = ring->qid; 2371 cmd->idx = ring->cur; 2372 2373 bcn = (struct wpi_cmd_beacon *)cmd->data; 2374 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2375 bcn->id = WPI_ID_BROADCAST; 2376 bcn->ofdm_mask = 0xff; 2377 bcn->cck_mask = 0x0f; 2378 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2379 bcn->len = htole16(m0->m_pkthdr.len); 2380 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2381 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2382 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2383 2384 /* save and trim IEEE802.11 header */ 2385 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2386 m_adj(m0, sizeof (struct ieee80211_frame)); 2387 2388 /* assume beacon frame is contiguous */ 2389 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2390 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2391 if (error != 0) { 2392 device_printf(sc->sc_dev, "could not map beacon\n"); 2393 m_freem(m0); 2394 return error; 2395 } 2396 2397 data->m = m0; 2398 2399 /* first scatter/gather segment is used by the beacon command */ 2400 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2401 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2402 ring->cur * sizeof (struct wpi_tx_cmd)); 2403 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2404 desc->segs[1].addr = htole32(physaddr); 2405 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2406 2407 /* kick cmd ring */ 2408 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2409 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2410 2411 return 0; 2412} 2413#endif 2414 2415static int 2416wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2417{ 2418 struct ieee80211com *ic = vap->iv_ic; 2419 struct ieee80211_node *ni = vap->iv_bss; 2420 struct wpi_node_info node; 2421 int error; 2422 2423 2424 /* update adapter's configuration */ 2425 sc->config.associd = 0; 2426 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2427 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2428 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2429 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2430 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2431 WPI_CONFIG_24GHZ); 2432 } 2433 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2434 sc->config.cck_mask = 0; 2435 sc->config.ofdm_mask = 0x15; 2436 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2437 sc->config.cck_mask = 0x03; 2438 sc->config.ofdm_mask = 0; 2439 } else { 2440 /* XXX assume 802.11b/g */ 2441 sc->config.cck_mask = 0x0f; 2442 sc->config.ofdm_mask = 0x15; 2443 } 2444 2445 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2446 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2447 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2448 sizeof (struct wpi_config), 1); 2449 if (error != 0) { 2450 device_printf(sc->sc_dev, "could not configure\n"); 2451 return error; 2452 } 2453 2454 /* configuration has changed, set Tx power accordingly */ 2455 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2456 device_printf(sc->sc_dev, "could not set Tx power\n"); 2457 return error; 2458 } 2459 2460 /* add default node */ 2461 memset(&node, 0, sizeof node); 2462 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2463 node.id = WPI_ID_BSS; 2464 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2465 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2466 node.action = htole32(WPI_ACTION_SET_RATE); 2467 node.antenna = WPI_ANTENNA_BOTH; 2468 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2469 if (error != 0) 2470 device_printf(sc->sc_dev, "could not add BSS node\n"); 2471 2472 return (error); 2473} 2474 2475static int 2476wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2477{ 2478 struct ieee80211com *ic = vap->iv_ic; 2479 struct ieee80211_node *ni = vap->iv_bss; 2480 int error; 2481 2482 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2483 /* link LED blinks while monitoring */ 2484 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2485 return 0; 2486 } 2487 2488 wpi_enable_tsf(sc, ni); 2489 2490 /* update adapter's configuration */ 2491 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2492 /* short preamble/slot time are negotiated when associating */ 2493 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2494 WPI_CONFIG_SHSLOT); 2495 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2496 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2497 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2498 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2499 sc->config.filter |= htole32(WPI_FILTER_BSS); 2500 2501 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2502 2503 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2504 sc->config.flags)); 2505 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2506 wpi_config), 1); 2507 if (error != 0) { 2508 device_printf(sc->sc_dev, "could not update configuration\n"); 2509 return error; 2510 } 2511 2512 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2513 if (error != 0) { 2514 device_printf(sc->sc_dev, "could set txpower\n"); 2515 return error; 2516 } 2517 2518 /* link LED always on while associated */ 2519 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2520 2521 /* start automatic rate control timer */ 2522 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2523 2524 return (error); 2525} 2526 2527/* 2528 * Send a scan request to the firmware. Since this command is huge, we map it 2529 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2530 * much of this code is similar to that in wpi_cmd but because we must manually 2531 * construct the probe & channels, we duplicate what's needed here. XXX In the 2532 * future, this function should be modified to use wpi_cmd to help cleanup the 2533 * code base. 2534 */ 2535static int 2536wpi_scan(struct wpi_softc *sc) 2537{ 2538 struct ifnet *ifp = sc->sc_ifp; 2539 struct ieee80211com *ic = ifp->if_l2com; 2540 struct ieee80211_scan_state *ss = ic->ic_scan; 2541 struct wpi_tx_ring *ring = &sc->cmdq; 2542 struct wpi_tx_desc *desc; 2543 struct wpi_tx_data *data; 2544 struct wpi_tx_cmd *cmd; 2545 struct wpi_scan_hdr *hdr; 2546 struct wpi_scan_chan *chan; 2547 struct ieee80211_frame *wh; 2548 struct ieee80211_rateset *rs; 2549 struct ieee80211_channel *c; 2550 enum ieee80211_phymode mode; 2551 uint8_t *frm; 2552 int nrates, pktlen, error, i, nssid; 2553 bus_addr_t physaddr; 2554 2555 desc = &ring->desc[ring->cur]; 2556 data = &ring->data[ring->cur]; 2557 2558 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2559 if (data->m == NULL) { 2560 device_printf(sc->sc_dev, 2561 "could not allocate mbuf for scan command\n"); 2562 return ENOMEM; 2563 } 2564 2565 cmd = mtod(data->m, struct wpi_tx_cmd *); 2566 cmd->code = WPI_CMD_SCAN; 2567 cmd->flags = 0; 2568 cmd->qid = ring->qid; 2569 cmd->idx = ring->cur; 2570 2571 hdr = (struct wpi_scan_hdr *)cmd->data; 2572 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2573 2574 /* 2575 * Move to the next channel if no packets are received within 5 msecs 2576 * after sending the probe request (this helps to reduce the duration 2577 * of active scans). 2578 */ 2579 hdr->quiet = htole16(5); 2580 hdr->threshold = htole16(1); 2581 2582 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2583 /* send probe requests at 6Mbps */ 2584 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2585 2586 /* Enable crc checking */ 2587 hdr->promotion = htole16(1); 2588 } else { 2589 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2590 /* send probe requests at 1Mbps */ 2591 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2592 } 2593 hdr->tx.id = WPI_ID_BROADCAST; 2594 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2595 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2596 2597 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2598 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2599 for (i = 0; i < nssid; i++) { 2600 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2601 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2602 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2603 hdr->scan_essids[i].esslen); 2604#ifdef WPI_DEBUG 2605 if (wpi_debug & WPI_DEBUG_SCANNING) { 2606 printf("Scanning Essid: "); 2607 ieee80211_print_essid(hdr->scan_essids[i].essid, 2608 hdr->scan_essids[i].esslen); 2609 printf("\n"); 2610 } 2611#endif 2612 } 2613 2614 /* 2615 * Build a probe request frame. Most of the following code is a 2616 * copy & paste of what is done in net80211. 2617 */ 2618 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2619 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2620 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2621 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2622 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2623 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2624 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2625 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2626 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2627 2628 frm = (uint8_t *)(wh + 1); 2629 2630 /* add essid IE, the hardware will fill this in for us */ 2631 *frm++ = IEEE80211_ELEMID_SSID; 2632 *frm++ = 0; 2633 2634 mode = ieee80211_chan2mode(ic->ic_curchan); 2635 rs = &ic->ic_sup_rates[mode]; 2636 2637 /* add supported rates IE */ 2638 *frm++ = IEEE80211_ELEMID_RATES; 2639 nrates = rs->rs_nrates; 2640 if (nrates > IEEE80211_RATE_SIZE) 2641 nrates = IEEE80211_RATE_SIZE; 2642 *frm++ = nrates; 2643 memcpy(frm, rs->rs_rates, nrates); 2644 frm += nrates; 2645 2646 /* add supported xrates IE */ 2647 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2648 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2649 *frm++ = IEEE80211_ELEMID_XRATES; 2650 *frm++ = nrates; 2651 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2652 frm += nrates; 2653 } 2654 2655 /* setup length of probe request */ 2656 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2657 2658 /* 2659 * Construct information about the channel that we 2660 * want to scan. The firmware expects this to be directly 2661 * after the scan probe request 2662 */ 2663 c = ic->ic_curchan; 2664 chan = (struct wpi_scan_chan *)frm; 2665 chan->chan = ieee80211_chan2ieee(ic, c); 2666 chan->flags = 0; 2667 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2668 chan->flags |= WPI_CHAN_ACTIVE; 2669 if (nssid != 0) 2670 chan->flags |= WPI_CHAN_DIRECT; 2671 } 2672 chan->gain_dsp = 0x6e; /* Default level */ 2673 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2674 chan->active = htole16(10); 2675 chan->passive = htole16(ss->ss_maxdwell); 2676 chan->gain_radio = 0x3b; 2677 } else { 2678 chan->active = htole16(20); 2679 chan->passive = htole16(ss->ss_maxdwell); 2680 chan->gain_radio = 0x28; 2681 } 2682 2683 DPRINTFN(WPI_DEBUG_SCANNING, 2684 ("Scanning %u Passive: %d\n", 2685 chan->chan, 2686 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2687 2688 hdr->nchan++; 2689 chan++; 2690 2691 frm += sizeof (struct wpi_scan_chan); 2692#if 0 2693 // XXX All Channels.... 2694 for (c = &ic->ic_channels[1]; 2695 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2696 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2697 continue; 2698 2699 chan->chan = ieee80211_chan2ieee(ic, c); 2700 chan->flags = 0; 2701 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2702 chan->flags |= WPI_CHAN_ACTIVE; 2703 if (ic->ic_des_ssid[0].len != 0) 2704 chan->flags |= WPI_CHAN_DIRECT; 2705 } 2706 chan->gain_dsp = 0x6e; /* Default level */ 2707 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2708 chan->active = htole16(10); 2709 chan->passive = htole16(110); 2710 chan->gain_radio = 0x3b; 2711 } else { 2712 chan->active = htole16(20); 2713 chan->passive = htole16(120); 2714 chan->gain_radio = 0x28; 2715 } 2716 2717 DPRINTFN(WPI_DEBUG_SCANNING, 2718 ("Scanning %u Passive: %d\n", 2719 chan->chan, 2720 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2721 2722 hdr->nchan++; 2723 chan++; 2724 2725 frm += sizeof (struct wpi_scan_chan); 2726 } 2727#endif 2728 2729 hdr->len = htole16(frm - (uint8_t *)hdr); 2730 pktlen = frm - (uint8_t *)cmd; 2731 2732 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2733 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2734 if (error != 0) { 2735 device_printf(sc->sc_dev, "could not map scan command\n"); 2736 m_freem(data->m); 2737 data->m = NULL; 2738 return error; 2739 } 2740 2741 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2742 desc->segs[0].addr = htole32(physaddr); 2743 desc->segs[0].len = htole32(pktlen); 2744 2745 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2746 BUS_DMASYNC_PREWRITE); 2747 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2748 2749 /* kick cmd ring */ 2750 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2751 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2752 2753 sc->sc_scan_timer = 5; 2754 return 0; /* will be notified async. of failure/success */ 2755} 2756 2757/** 2758 * Configure the card to listen to a particular channel, this transisions the 2759 * card in to being able to receive frames from remote devices. 2760 */ 2761static int 2762wpi_config(struct wpi_softc *sc) 2763{ 2764 struct ifnet *ifp = sc->sc_ifp; 2765 struct ieee80211com *ic = ifp->if_l2com; 2766 struct wpi_power power; 2767 struct wpi_bluetooth bluetooth; 2768 struct wpi_node_info node; 2769 int error; 2770 2771 /* set power mode */ 2772 memset(&power, 0, sizeof power); 2773 power.flags = htole32(WPI_POWER_CAM|0x8); 2774 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2775 if (error != 0) { 2776 device_printf(sc->sc_dev, "could not set power mode\n"); 2777 return error; 2778 } 2779 2780 /* configure bluetooth coexistence */ 2781 memset(&bluetooth, 0, sizeof bluetooth); 2782 bluetooth.flags = 3; 2783 bluetooth.lead = 0xaa; 2784 bluetooth.kill = 1; 2785 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2786 0); 2787 if (error != 0) { 2788 device_printf(sc->sc_dev, 2789 "could not configure bluetooth coexistence\n"); 2790 return error; 2791 } 2792 2793 /* configure adapter */ 2794 memset(&sc->config, 0, sizeof (struct wpi_config)); 2795 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2796 /*set default channel*/ 2797 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2798 sc->config.flags = htole32(WPI_CONFIG_TSF); 2799 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2800 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2801 WPI_CONFIG_24GHZ); 2802 } 2803 sc->config.filter = 0; 2804 switch (ic->ic_opmode) { 2805 case IEEE80211_M_STA: 2806 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2807 sc->config.mode = WPI_MODE_STA; 2808 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2809 break; 2810 case IEEE80211_M_IBSS: 2811 case IEEE80211_M_AHDEMO: 2812 sc->config.mode = WPI_MODE_IBSS; 2813 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2814 WPI_FILTER_MULTICAST); 2815 break; 2816 case IEEE80211_M_HOSTAP: 2817 sc->config.mode = WPI_MODE_HOSTAP; 2818 break; 2819 case IEEE80211_M_MONITOR: 2820 sc->config.mode = WPI_MODE_MONITOR; 2821 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2822 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2823 break; 2824 default: 2825 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2826 return EINVAL; 2827 } 2828 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2829 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2830 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2831 sizeof (struct wpi_config), 0); 2832 if (error != 0) { 2833 device_printf(sc->sc_dev, "configure command failed\n"); 2834 return error; 2835 } 2836 2837 /* configuration has changed, set Tx power accordingly */ 2838 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2839 device_printf(sc->sc_dev, "could not set Tx power\n"); 2840 return error; 2841 } 2842 2843 /* add broadcast node */ 2844 memset(&node, 0, sizeof node); 2845 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2846 node.id = WPI_ID_BROADCAST; 2847 node.rate = wpi_plcp_signal(2); 2848 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2849 if (error != 0) { 2850 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2851 return error; 2852 } 2853 2854 /* Setup rate scalling */ 2855 error = wpi_mrr_setup(sc); 2856 if (error != 0) { 2857 device_printf(sc->sc_dev, "could not setup MRR\n"); 2858 return error; 2859 } 2860 2861 return 0; 2862} 2863 2864static void 2865wpi_stop_master(struct wpi_softc *sc) 2866{ 2867 uint32_t tmp; 2868 int ntries; 2869 2870 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2871 2872 tmp = WPI_READ(sc, WPI_RESET); 2873 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2874 2875 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2876 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2877 return; /* already asleep */ 2878 2879 for (ntries = 0; ntries < 100; ntries++) { 2880 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2881 break; 2882 DELAY(10); 2883 } 2884 if (ntries == 100) { 2885 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2886 } 2887} 2888 2889static int 2890wpi_power_up(struct wpi_softc *sc) 2891{ 2892 uint32_t tmp; 2893 int ntries; 2894 2895 wpi_mem_lock(sc); 2896 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2897 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2898 wpi_mem_unlock(sc); 2899 2900 for (ntries = 0; ntries < 5000; ntries++) { 2901 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2902 break; 2903 DELAY(10); 2904 } 2905 if (ntries == 5000) { 2906 device_printf(sc->sc_dev, 2907 "timeout waiting for NIC to power up\n"); 2908 return ETIMEDOUT; 2909 } 2910 return 0; 2911} 2912 2913static int 2914wpi_reset(struct wpi_softc *sc) 2915{ 2916 uint32_t tmp; 2917 int ntries; 2918 2919 DPRINTFN(WPI_DEBUG_HW, 2920 ("Resetting the card - clearing any uploaded firmware\n")); 2921 2922 /* clear any pending interrupts */ 2923 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2924 2925 tmp = WPI_READ(sc, WPI_PLL_CTL); 2926 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2927 2928 tmp = WPI_READ(sc, WPI_CHICKEN); 2929 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2930 2931 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2932 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2933 2934 /* wait for clock stabilization */ 2935 for (ntries = 0; ntries < 25000; ntries++) { 2936 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2937 break; 2938 DELAY(10); 2939 } 2940 if (ntries == 25000) { 2941 device_printf(sc->sc_dev, 2942 "timeout waiting for clock stabilization\n"); 2943 return ETIMEDOUT; 2944 } 2945 2946 /* initialize EEPROM */ 2947 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2948 2949 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2950 device_printf(sc->sc_dev, "EEPROM not found\n"); 2951 return EIO; 2952 } 2953 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2954 2955 return 0; 2956} 2957 2958static void 2959wpi_hw_config(struct wpi_softc *sc) 2960{ 2961 uint32_t rev, hw; 2962 2963 /* voodoo from the Linux "driver".. */ 2964 hw = WPI_READ(sc, WPI_HWCONFIG); 2965 2966 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2967 if ((rev & 0xc0) == 0x40) 2968 hw |= WPI_HW_ALM_MB; 2969 else if (!(rev & 0x80)) 2970 hw |= WPI_HW_ALM_MM; 2971 2972 if (sc->cap == 0x80) 2973 hw |= WPI_HW_SKU_MRC; 2974 2975 hw &= ~WPI_HW_REV_D; 2976 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2977 hw |= WPI_HW_REV_D; 2978 2979 if (sc->type > 1) 2980 hw |= WPI_HW_TYPE_B; 2981 2982 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2983} 2984 2985static void 2986wpi_rfkill_resume(struct wpi_softc *sc) 2987{ 2988 struct ifnet *ifp = sc->sc_ifp; 2989 struct ieee80211com *ic = ifp->if_l2com; 2990 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2991 int ntries; 2992 2993 /* enable firmware again */ 2994 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 2995 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 2996 2997 /* wait for thermal sensors to calibrate */ 2998 for (ntries = 0; ntries < 1000; ntries++) { 2999 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3000 break; 3001 DELAY(10); 3002 } 3003 3004 if (ntries == 1000) { 3005 device_printf(sc->sc_dev, 3006 "timeout waiting for thermal calibration\n"); 3007 WPI_UNLOCK(sc); 3008 return; 3009 } 3010 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3011 3012 if (wpi_config(sc) != 0) { 3013 device_printf(sc->sc_dev, "device config failed\n"); 3014 WPI_UNLOCK(sc); 3015 return; 3016 } 3017 3018 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3019 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3020 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3021 3022 if (vap != NULL) { 3023 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3024 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3025 ieee80211_beacon_miss(ic); 3026 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3027 } else 3028 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3029 } else { 3030 ieee80211_scan_next(vap); 3031 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3032 } 3033 } 3034 3035 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3036} 3037 3038static void 3039wpi_init_locked(struct wpi_softc *sc, int force) 3040{ 3041 struct ifnet *ifp = sc->sc_ifp; 3042 uint32_t tmp; 3043 int ntries, qid; 3044 3045 wpi_stop_locked(sc); 3046 (void)wpi_reset(sc); 3047 3048 wpi_mem_lock(sc); 3049 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3050 DELAY(20); 3051 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3052 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3053 wpi_mem_unlock(sc); 3054 3055 (void)wpi_power_up(sc); 3056 wpi_hw_config(sc); 3057 3058 /* init Rx ring */ 3059 wpi_mem_lock(sc); 3060 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3061 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3062 offsetof(struct wpi_shared, next)); 3063 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3064 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3065 wpi_mem_unlock(sc); 3066 3067 /* init Tx rings */ 3068 wpi_mem_lock(sc); 3069 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3070 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3071 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3072 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3073 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3074 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3075 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3076 3077 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3078 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3079 3080 for (qid = 0; qid < 6; qid++) { 3081 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3082 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3083 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3084 } 3085 wpi_mem_unlock(sc); 3086 3087 /* clear "radio off" and "disable command" bits (reversed logic) */ 3088 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3089 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3090 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3091 3092 /* clear any pending interrupts */ 3093 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3094 3095 /* enable interrupts */ 3096 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3097 3098 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3099 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3100 3101 if ((wpi_load_firmware(sc)) != 0) { 3102 device_printf(sc->sc_dev, 3103 "A problem occurred loading the firmware to the driver\n"); 3104 return; 3105 } 3106 3107 /* At this point the firmware is up and running. If the hardware 3108 * RF switch is turned off thermal calibration will fail, though 3109 * the card is still happy to continue to accept commands, catch 3110 * this case and schedule a task to watch for it to be turned on. 3111 */ 3112 wpi_mem_lock(sc); 3113 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3114 wpi_mem_unlock(sc); 3115 3116 if (!(tmp & 0x1)) { 3117 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3118 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3119 goto out; 3120 } 3121 3122 /* wait for thermal sensors to calibrate */ 3123 for (ntries = 0; ntries < 1000; ntries++) { 3124 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3125 break; 3126 DELAY(10); 3127 } 3128 3129 if (ntries == 1000) { 3130 device_printf(sc->sc_dev, 3131 "timeout waiting for thermal sensors calibration\n"); 3132 return; 3133 } 3134 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3135 3136 if (wpi_config(sc) != 0) { 3137 device_printf(sc->sc_dev, "device config failed\n"); 3138 return; 3139 } 3140 3141 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3142 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3143out: 3144 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3145} 3146 3147static void 3148wpi_init(void *arg) 3149{ 3150 struct wpi_softc *sc = arg; 3151 struct ifnet *ifp = sc->sc_ifp; 3152 struct ieee80211com *ic = ifp->if_l2com; 3153 3154 WPI_LOCK(sc); 3155 wpi_init_locked(sc, 0); 3156 WPI_UNLOCK(sc); 3157 3158 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3159 ieee80211_start_all(ic); /* start all vaps */ 3160} 3161 3162static void 3163wpi_stop_locked(struct wpi_softc *sc) 3164{ 3165 struct ifnet *ifp = sc->sc_ifp; 3166 uint32_t tmp; 3167 int ac; 3168 3169 sc->sc_tx_timer = 0; 3170 sc->sc_scan_timer = 0; 3171 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3172 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3173 callout_stop(&sc->watchdog_to); 3174 callout_stop(&sc->calib_to); 3175 3176 3177 /* disable interrupts */ 3178 WPI_WRITE(sc, WPI_MASK, 0); 3179 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3180 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3181 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3182 3183 wpi_mem_lock(sc); 3184 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3185 wpi_mem_unlock(sc); 3186 3187 /* reset all Tx rings */ 3188 for (ac = 0; ac < 4; ac++) 3189 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3190 wpi_reset_tx_ring(sc, &sc->cmdq); 3191 3192 /* reset Rx ring */ 3193 wpi_reset_rx_ring(sc, &sc->rxq); 3194 3195 wpi_mem_lock(sc); 3196 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3197 wpi_mem_unlock(sc); 3198 3199 DELAY(5); 3200 3201 wpi_stop_master(sc); 3202 3203 tmp = WPI_READ(sc, WPI_RESET); 3204 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3205 sc->flags &= ~WPI_FLAG_BUSY; 3206} 3207 3208static void 3209wpi_stop(struct wpi_softc *sc) 3210{ 3211 WPI_LOCK(sc); 3212 wpi_stop_locked(sc); 3213 WPI_UNLOCK(sc); 3214} 3215 3216static void 3217wpi_newassoc(struct ieee80211_node *ni, int isnew) 3218{ 3219 3220 /* XXX move */ 3221 ieee80211_ratectl_node_init(ni); 3222} 3223 3224static void 3225wpi_calib_timeout(void *arg) 3226{ 3227 struct wpi_softc *sc = arg; 3228 struct ifnet *ifp = sc->sc_ifp; 3229 struct ieee80211com *ic = ifp->if_l2com; 3230 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3231 int temp; 3232 3233 if (vap->iv_state != IEEE80211_S_RUN) 3234 return; 3235 3236 /* update sensor data */ 3237 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3238 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3239 3240 wpi_power_calibration(sc, temp); 3241 3242 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3243} 3244 3245/* 3246 * This function is called periodically (every 60 seconds) to adjust output 3247 * power to temperature changes. 3248 */ 3249static void 3250wpi_power_calibration(struct wpi_softc *sc, int temp) 3251{ 3252 struct ifnet *ifp = sc->sc_ifp; 3253 struct ieee80211com *ic = ifp->if_l2com; 3254 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3255 3256 /* sanity-check read value */ 3257 if (temp < -260 || temp > 25) { 3258 /* this can't be correct, ignore */ 3259 DPRINTFN(WPI_DEBUG_TEMP, 3260 ("out-of-range temperature reported: %d\n", temp)); 3261 return; 3262 } 3263 3264 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3265 3266 /* adjust Tx power if need be */ 3267 if (abs(temp - sc->temp) <= 6) 3268 return; 3269 3270 sc->temp = temp; 3271 3272 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3273 /* just warn, too bad for the automatic calibration... */ 3274 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3275 } 3276} 3277 3278/** 3279 * Read the eeprom to find out what channels are valid for the given 3280 * band and update net80211 with what we find. 3281 */ 3282static void 3283wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3284{ 3285 struct ifnet *ifp = sc->sc_ifp; 3286 struct ieee80211com *ic = ifp->if_l2com; 3287 const struct wpi_chan_band *band = &wpi_bands[n]; 3288 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3289 struct ieee80211_channel *c; 3290 int chan, i, passive; 3291 3292 wpi_read_prom_data(sc, band->addr, channels, 3293 band->nchan * sizeof (struct wpi_eeprom_chan)); 3294 3295 for (i = 0; i < band->nchan; i++) { 3296 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3297 DPRINTFN(WPI_DEBUG_HW, 3298 ("Channel Not Valid: %d, band %d\n", 3299 band->chan[i],n)); 3300 continue; 3301 } 3302 3303 passive = 0; 3304 chan = band->chan[i]; 3305 c = &ic->ic_channels[ic->ic_nchans++]; 3306 3307 /* is active scan allowed on this channel? */ 3308 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3309 passive = IEEE80211_CHAN_PASSIVE; 3310 } 3311 3312 if (n == 0) { /* 2GHz band */ 3313 c->ic_ieee = chan; 3314 c->ic_freq = ieee80211_ieee2mhz(chan, 3315 IEEE80211_CHAN_2GHZ); 3316 c->ic_flags = IEEE80211_CHAN_B | passive; 3317 3318 c = &ic->ic_channels[ic->ic_nchans++]; 3319 c->ic_ieee = chan; 3320 c->ic_freq = ieee80211_ieee2mhz(chan, 3321 IEEE80211_CHAN_2GHZ); 3322 c->ic_flags = IEEE80211_CHAN_G | passive; 3323 3324 } else { /* 5GHz band */ 3325 /* 3326 * Some 3945ABG adapters support channels 7, 8, 11 3327 * and 12 in the 2GHz *and* 5GHz bands. 3328 * Because of limitations in our net80211(9) stack, 3329 * we can't support these channels in 5GHz band. 3330 * XXX not true; just need to map to proper frequency 3331 */ 3332 if (chan <= 14) 3333 continue; 3334 3335 c->ic_ieee = chan; 3336 c->ic_freq = ieee80211_ieee2mhz(chan, 3337 IEEE80211_CHAN_5GHZ); 3338 c->ic_flags = IEEE80211_CHAN_A | passive; 3339 } 3340 3341 /* save maximum allowed power for this channel */ 3342 sc->maxpwr[chan] = channels[i].maxpwr; 3343 3344#if 0 3345 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3346 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3347 //ic->ic_channels[chan].ic_minpower... 3348 //ic->ic_channels[chan].ic_maxregtxpower... 3349#endif 3350 3351 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3352 " passive=%d, offset %d\n", chan, c->ic_freq, 3353 channels[i].flags, sc->maxpwr[chan], 3354 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3355 ic->ic_nchans)); 3356 } 3357} 3358 3359static void 3360wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3361{ 3362 struct wpi_power_group *group = &sc->groups[n]; 3363 struct wpi_eeprom_group rgroup; 3364 int i; 3365 3366 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3367 sizeof rgroup); 3368 3369 /* save power group information */ 3370 group->chan = rgroup.chan; 3371 group->maxpwr = rgroup.maxpwr; 3372 /* temperature at which the samples were taken */ 3373 group->temp = (int16_t)le16toh(rgroup.temp); 3374 3375 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3376 group->chan, group->maxpwr, group->temp)); 3377 3378 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3379 group->samples[i].index = rgroup.samples[i].index; 3380 group->samples[i].power = rgroup.samples[i].power; 3381 3382 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3383 group->samples[i].index, group->samples[i].power)); 3384 } 3385} 3386 3387/* 3388 * Update Tx power to match what is defined for channel `c'. 3389 */ 3390static int 3391wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3392{ 3393 struct ifnet *ifp = sc->sc_ifp; 3394 struct ieee80211com *ic = ifp->if_l2com; 3395 struct wpi_power_group *group; 3396 struct wpi_cmd_txpower txpower; 3397 u_int chan; 3398 int i; 3399 3400 /* get channel number */ 3401 chan = ieee80211_chan2ieee(ic, c); 3402 3403 /* find the power group to which this channel belongs */ 3404 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3405 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3406 if (chan <= group->chan) 3407 break; 3408 } else 3409 group = &sc->groups[0]; 3410 3411 memset(&txpower, 0, sizeof txpower); 3412 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3413 txpower.channel = htole16(chan); 3414 3415 /* set Tx power for all OFDM and CCK rates */ 3416 for (i = 0; i <= 11 ; i++) { 3417 /* retrieve Tx power for this channel/rate combination */ 3418 int idx = wpi_get_power_index(sc, group, c, 3419 wpi_ridx_to_rate[i]); 3420 3421 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3422 3423 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3424 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3425 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3426 } else { 3427 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3428 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3429 } 3430 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3431 chan, wpi_ridx_to_rate[i], idx)); 3432 } 3433 3434 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3435} 3436 3437/* 3438 * Determine Tx power index for a given channel/rate combination. 3439 * This takes into account the regulatory information from EEPROM and the 3440 * current temperature. 3441 */ 3442static int 3443wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3444 struct ieee80211_channel *c, int rate) 3445{ 3446/* fixed-point arithmetic division using a n-bit fractional part */ 3447#define fdivround(a, b, n) \ 3448 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3449 3450/* linear interpolation */ 3451#define interpolate(x, x1, y1, x2, y2, n) \ 3452 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3453 3454 struct ifnet *ifp = sc->sc_ifp; 3455 struct ieee80211com *ic = ifp->if_l2com; 3456 struct wpi_power_sample *sample; 3457 int pwr, idx; 3458 u_int chan; 3459 3460 /* get channel number */ 3461 chan = ieee80211_chan2ieee(ic, c); 3462 3463 /* default power is group's maximum power - 3dB */ 3464 pwr = group->maxpwr / 2; 3465 3466 /* decrease power for highest OFDM rates to reduce distortion */ 3467 switch (rate) { 3468 case 72: /* 36Mb/s */ 3469 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3470 break; 3471 case 96: /* 48Mb/s */ 3472 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3473 break; 3474 case 108: /* 54Mb/s */ 3475 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3476 break; 3477 } 3478 3479 /* never exceed channel's maximum allowed Tx power */ 3480 pwr = min(pwr, sc->maxpwr[chan]); 3481 3482 /* retrieve power index into gain tables from samples */ 3483 for (sample = group->samples; sample < &group->samples[3]; sample++) 3484 if (pwr > sample[1].power) 3485 break; 3486 /* fixed-point linear interpolation using a 19-bit fractional part */ 3487 idx = interpolate(pwr, sample[0].power, sample[0].index, 3488 sample[1].power, sample[1].index, 19); 3489 3490 /* 3491 * Adjust power index based on current temperature 3492 * - if colder than factory-calibrated: decreate output power 3493 * - if warmer than factory-calibrated: increase output power 3494 */ 3495 idx -= (sc->temp - group->temp) * 11 / 100; 3496 3497 /* decrease power for CCK rates (-5dB) */ 3498 if (!WPI_RATE_IS_OFDM(rate)) 3499 idx += 10; 3500 3501 /* keep power index in a valid range */ 3502 if (idx < 0) 3503 return 0; 3504 if (idx > WPI_MAX_PWR_INDEX) 3505 return WPI_MAX_PWR_INDEX; 3506 return idx; 3507 3508#undef interpolate 3509#undef fdivround 3510} 3511 3512/** 3513 * Called by net80211 framework to indicate that a scan 3514 * is starting. This function doesn't actually do the scan, 3515 * wpi_scan_curchan starts things off. This function is more 3516 * of an early warning from the framework we should get ready 3517 * for the scan. 3518 */ 3519static void 3520wpi_scan_start(struct ieee80211com *ic) 3521{ 3522 struct ifnet *ifp = ic->ic_ifp; 3523 struct wpi_softc *sc = ifp->if_softc; 3524 3525 WPI_LOCK(sc); 3526 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3527 WPI_UNLOCK(sc); 3528} 3529 3530/** 3531 * Called by the net80211 framework, indicates that the 3532 * scan has ended. If there is a scan in progress on the card 3533 * then it should be aborted. 3534 */ 3535static void 3536wpi_scan_end(struct ieee80211com *ic) 3537{ 3538 /* XXX ignore */ 3539} 3540 3541/** 3542 * Called by the net80211 framework to indicate to the driver 3543 * that the channel should be changed 3544 */ 3545static void 3546wpi_set_channel(struct ieee80211com *ic) 3547{ 3548 struct ifnet *ifp = ic->ic_ifp; 3549 struct wpi_softc *sc = ifp->if_softc; 3550 int error; 3551 3552 /* 3553 * Only need to set the channel in Monitor mode. AP scanning and auth 3554 * are already taken care of by their respective firmware commands. 3555 */ 3556 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3557 error = wpi_config(sc); 3558 if (error != 0) 3559 device_printf(sc->sc_dev, 3560 "error %d settting channel\n", error); 3561 } 3562} 3563 3564/** 3565 * Called by net80211 to indicate that we need to scan the current 3566 * channel. The channel is previously be set via the wpi_set_channel 3567 * callback. 3568 */ 3569static void 3570wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3571{ 3572 struct ieee80211vap *vap = ss->ss_vap; 3573 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3574 struct wpi_softc *sc = ifp->if_softc; 3575 3576 WPI_LOCK(sc); 3577 if (wpi_scan(sc)) 3578 ieee80211_cancel_scan(vap); 3579 WPI_UNLOCK(sc); 3580} 3581 3582/** 3583 * Called by the net80211 framework to indicate 3584 * the minimum dwell time has been met, terminate the scan. 3585 * We don't actually terminate the scan as the firmware will notify 3586 * us when it's finished and we have no way to interrupt it. 3587 */ 3588static void 3589wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3590{ 3591 /* NB: don't try to abort scan; wait for firmware to finish */ 3592} 3593 3594static void 3595wpi_hwreset(void *arg, int pending) 3596{ 3597 struct wpi_softc *sc = arg; 3598 3599 WPI_LOCK(sc); 3600 wpi_init_locked(sc, 0); 3601 WPI_UNLOCK(sc); 3602} 3603 3604static void 3605wpi_rfreset(void *arg, int pending) 3606{ 3607 struct wpi_softc *sc = arg; 3608 3609 WPI_LOCK(sc); 3610 wpi_rfkill_resume(sc); 3611 WPI_UNLOCK(sc); 3612} 3613 3614/* 3615 * Allocate DMA-safe memory for firmware transfer. 3616 */ 3617static int 3618wpi_alloc_fwmem(struct wpi_softc *sc) 3619{ 3620 /* allocate enough contiguous space to store text and data */ 3621 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3622 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3623 BUS_DMA_NOWAIT); 3624} 3625 3626static void 3627wpi_free_fwmem(struct wpi_softc *sc) 3628{ 3629 wpi_dma_contig_free(&sc->fw_dma); 3630} 3631 3632/** 3633 * Called every second, wpi_watchdog used by the watch dog timer 3634 * to check that the card is still alive 3635 */ 3636static void 3637wpi_watchdog(void *arg) 3638{ 3639 struct wpi_softc *sc = arg; 3640 struct ifnet *ifp = sc->sc_ifp; 3641 struct ieee80211com *ic = ifp->if_l2com; 3642 uint32_t tmp; 3643 3644 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3645 3646 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3647 /* No need to lock firmware memory */ 3648 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3649 3650 if ((tmp & 0x1) == 0) { 3651 /* Radio kill switch is still off */ 3652 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3653 return; 3654 } 3655 3656 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3657 ieee80211_runtask(ic, &sc->sc_radiotask); 3658 return; 3659 } 3660 3661 if (sc->sc_tx_timer > 0) { 3662 if (--sc->sc_tx_timer == 0) { 3663 device_printf(sc->sc_dev,"device timeout\n"); 3664 ifp->if_oerrors++; 3665 ieee80211_runtask(ic, &sc->sc_restarttask); 3666 } 3667 } 3668 if (sc->sc_scan_timer > 0) { 3669 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3670 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3671 device_printf(sc->sc_dev,"scan timeout\n"); 3672 ieee80211_cancel_scan(vap); 3673 ieee80211_runtask(ic, &sc->sc_restarttask); 3674 } 3675 } 3676 3677 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3678 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3679} 3680 3681#ifdef WPI_DEBUG 3682static const char *wpi_cmd_str(int cmd) 3683{ 3684 switch (cmd) { 3685 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3686 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3687 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3688 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3689 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3690 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3691 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3692 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3693 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3694 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3695 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3696 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3697 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3698 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3699 3700 default: 3701 KASSERT(1, ("Unknown Command: %d\n", cmd)); 3702 return "UNKNOWN CMD"; /* Make the compiler happy */ 3703 } 3704} 3705#endif 3706 3707MODULE_DEPEND(wpi, pci, 1, 1, 1); 3708MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3709MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3710