if_wpi.c revision 257176
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 257176 2013-10-26 17:58:36Z glebius $"); 23 24/* 25 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 26 * 27 * The 3945ABG network adapter doesn't use traditional hardware as 28 * many other adaptors do. Instead at run time the eeprom is set into a known 29 * state and told to load boot firmware. The boot firmware loads an init and a 30 * main binary firmware image into SRAM on the card via DMA. 31 * Once the firmware is loaded, the driver/hw then 32 * communicate by way of circular dma rings via the SRAM to the firmware. 33 * 34 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 35 * The 4 tx data rings allow for prioritization QoS. 36 * 37 * The rx data ring consists of 32 dma buffers. Two registers are used to 38 * indicate where in the ring the driver and the firmware are up to. The 39 * driver sets the initial read index (reg1) and the initial write index (reg2), 40 * the firmware updates the read index (reg1) on rx of a packet and fires an 41 * interrupt. The driver then processes the buffers starting at reg1 indicating 42 * to the firmware which buffers have been accessed by updating reg2. At the 43 * same time allocating new memory for the processed buffer. 44 * 45 * A similar thing happens with the tx rings. The difference is the firmware 46 * stop processing buffers once the queue is full and until confirmation 47 * of a successful transmition (tx_intr) has occurred. 48 * 49 * The command ring operates in the same manner as the tx queues. 50 * 51 * All communication direct to the card (ie eeprom) is classed as Stage1 52 * communication 53 * 54 * All communication via the firmware to the card is classed as State2. 55 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 56 * firmware. The bootstrap firmware and runtime firmware are loaded 57 * from host memory via dma to the card then told to execute. From this point 58 * on the majority of communications between the driver and the card goes 59 * via the firmware. 60 */ 61 62#include "opt_wlan.h" 63 64#include <sys/param.h> 65#include <sys/sysctl.h> 66#include <sys/sockio.h> 67#include <sys/mbuf.h> 68#include <sys/kernel.h> 69#include <sys/socket.h> 70#include <sys/systm.h> 71#include <sys/malloc.h> 72#include <sys/queue.h> 73#include <sys/taskqueue.h> 74#include <sys/module.h> 75#include <sys/bus.h> 76#include <sys/endian.h> 77#include <sys/linker.h> 78#include <sys/firmware.h> 79 80#include <machine/bus.h> 81#include <machine/resource.h> 82#include <sys/rman.h> 83 84#include <dev/pci/pcireg.h> 85#include <dev/pci/pcivar.h> 86 87#include <net/bpf.h> 88#include <net/if.h> 89#include <net/if_var.h> 90#include <net/if_arp.h> 91#include <net/ethernet.h> 92#include <net/if_dl.h> 93#include <net/if_media.h> 94#include <net/if_types.h> 95 96#include <net80211/ieee80211_var.h> 97#include <net80211/ieee80211_radiotap.h> 98#include <net80211/ieee80211_regdomain.h> 99#include <net80211/ieee80211_ratectl.h> 100 101#include <netinet/in.h> 102#include <netinet/in_systm.h> 103#include <netinet/in_var.h> 104#include <netinet/ip.h> 105#include <netinet/if_ether.h> 106 107#include <dev/wpi/if_wpireg.h> 108#include <dev/wpi/if_wpivar.h> 109 110#define WPI_DEBUG 111 112#ifdef WPI_DEBUG 113#define DPRINTF(x) do { if (wpi_debug != 0) printf x; } while (0) 114#define DPRINTFN(n, x) do { if (wpi_debug & n) printf x; } while (0) 115#define WPI_DEBUG_SET (wpi_debug != 0) 116 117enum { 118 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ 119 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ 120 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ 121 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ 122 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ 123 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ 124 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ 125 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ 126 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ 127 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ 128 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ 129 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ 130 WPI_DEBUG_ANY = 0xffffffff 131}; 132 133static int wpi_debug = 0; 134SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level"); 135TUNABLE_INT("debug.wpi", &wpi_debug); 136 137#else 138#define DPRINTF(x) 139#define DPRINTFN(n, x) 140#define WPI_DEBUG_SET 0 141#endif 142 143struct wpi_ident { 144 uint16_t vendor; 145 uint16_t device; 146 uint16_t subdevice; 147 const char *name; 148}; 149 150static const struct wpi_ident wpi_ident_table[] = { 151 /* The below entries support ABG regardless of the subid */ 152 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 153 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 154 /* The below entries only support BG */ 155 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 156 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 157 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 158 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 159 { 0, 0, 0, NULL } 160}; 161 162static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 163 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 164 const uint8_t [IEEE80211_ADDR_LEN], 165 const uint8_t [IEEE80211_ADDR_LEN]); 166static void wpi_vap_delete(struct ieee80211vap *); 167static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 168 void **, bus_size_t, bus_size_t, int); 169static void wpi_dma_contig_free(struct wpi_dma_info *); 170static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 171static int wpi_alloc_shared(struct wpi_softc *); 172static void wpi_free_shared(struct wpi_softc *); 173static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 174static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 175static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 176static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 177 int, int); 178static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 179static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 180static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 181static void wpi_mem_lock(struct wpi_softc *); 182static void wpi_mem_unlock(struct wpi_softc *); 183static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 184static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 185static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 186 const uint32_t *, int); 187static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 188static int wpi_alloc_fwmem(struct wpi_softc *); 189static void wpi_free_fwmem(struct wpi_softc *); 190static int wpi_load_firmware(struct wpi_softc *); 191static void wpi_unload_firmware(struct wpi_softc *); 192static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 193static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 194 struct wpi_rx_data *); 195static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 196static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 197static void wpi_notif_intr(struct wpi_softc *); 198static void wpi_intr(void *); 199static uint8_t wpi_plcp_signal(int); 200static void wpi_watchdog(void *); 201static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 202 struct ieee80211_node *, int); 203static void wpi_start(struct ifnet *); 204static void wpi_start_locked(struct ifnet *); 205static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 206 const struct ieee80211_bpf_params *); 207static void wpi_scan_start(struct ieee80211com *); 208static void wpi_scan_end(struct ieee80211com *); 209static void wpi_set_channel(struct ieee80211com *); 210static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 211static void wpi_scan_mindwell(struct ieee80211_scan_state *); 212static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 213static void wpi_read_eeprom(struct wpi_softc *, 214 uint8_t macaddr[IEEE80211_ADDR_LEN]); 215static void wpi_read_eeprom_channels(struct wpi_softc *, int); 216static void wpi_read_eeprom_group(struct wpi_softc *, int); 217static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 218static int wpi_wme_update(struct ieee80211com *); 219static int wpi_mrr_setup(struct wpi_softc *); 220static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 221static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 222#if 0 223static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 224#endif 225static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 226static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 227static int wpi_scan(struct wpi_softc *); 228static int wpi_config(struct wpi_softc *); 229static void wpi_stop_master(struct wpi_softc *); 230static int wpi_power_up(struct wpi_softc *); 231static int wpi_reset(struct wpi_softc *); 232static void wpi_hwreset(void *, int); 233static void wpi_rfreset(void *, int); 234static void wpi_hw_config(struct wpi_softc *); 235static void wpi_init(void *); 236static void wpi_init_locked(struct wpi_softc *, int); 237static void wpi_stop(struct wpi_softc *); 238static void wpi_stop_locked(struct wpi_softc *); 239 240static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 241 int); 242static void wpi_calib_timeout(void *); 243static void wpi_power_calibration(struct wpi_softc *, int); 244static int wpi_get_power_index(struct wpi_softc *, 245 struct wpi_power_group *, struct ieee80211_channel *, int); 246#ifdef WPI_DEBUG 247static const char *wpi_cmd_str(int); 248#endif 249static int wpi_probe(device_t); 250static int wpi_attach(device_t); 251static int wpi_detach(device_t); 252static int wpi_shutdown(device_t); 253static int wpi_suspend(device_t); 254static int wpi_resume(device_t); 255 256 257static device_method_t wpi_methods[] = { 258 /* Device interface */ 259 DEVMETHOD(device_probe, wpi_probe), 260 DEVMETHOD(device_attach, wpi_attach), 261 DEVMETHOD(device_detach, wpi_detach), 262 DEVMETHOD(device_shutdown, wpi_shutdown), 263 DEVMETHOD(device_suspend, wpi_suspend), 264 DEVMETHOD(device_resume, wpi_resume), 265 266 { 0, 0 } 267}; 268 269static driver_t wpi_driver = { 270 "wpi", 271 wpi_methods, 272 sizeof (struct wpi_softc) 273}; 274 275static devclass_t wpi_devclass; 276 277DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0); 278 279MODULE_VERSION(wpi, 1); 280 281static const uint8_t wpi_ridx_to_plcp[] = { 282 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 283 /* R1-R4 (ral/ural is R4-R1) */ 284 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 285 /* CCK: device-dependent */ 286 10, 20, 55, 110 287}; 288static const uint8_t wpi_ridx_to_rate[] = { 289 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 290 2, 4, 11, 22 /*CCK */ 291}; 292 293 294static int 295wpi_probe(device_t dev) 296{ 297 const struct wpi_ident *ident; 298 299 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 300 if (pci_get_vendor(dev) == ident->vendor && 301 pci_get_device(dev) == ident->device) { 302 device_set_desc(dev, ident->name); 303 return 0; 304 } 305 } 306 return ENXIO; 307} 308 309/** 310 * Load the firmare image from disk to the allocated dma buffer. 311 * we also maintain the reference to the firmware pointer as there 312 * is times where we may need to reload the firmware but we are not 313 * in a context that can access the filesystem (ie taskq cause by restart) 314 * 315 * @return 0 on success, an errno on failure 316 */ 317static int 318wpi_load_firmware(struct wpi_softc *sc) 319{ 320 const struct firmware *fp; 321 struct wpi_dma_info *dma = &sc->fw_dma; 322 const struct wpi_firmware_hdr *hdr; 323 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 324 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 325 int error; 326 327 DPRINTFN(WPI_DEBUG_FIRMWARE, 328 ("Attempting Loading Firmware from wpi_fw module\n")); 329 330 WPI_UNLOCK(sc); 331 332 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 333 device_printf(sc->sc_dev, 334 "could not load firmware image 'wpifw'\n"); 335 error = ENOENT; 336 WPI_LOCK(sc); 337 goto fail; 338 } 339 340 fp = sc->fw_fp; 341 342 WPI_LOCK(sc); 343 344 /* Validate the firmware is minimum a particular version */ 345 if (fp->version < WPI_FW_MINVERSION) { 346 device_printf(sc->sc_dev, 347 "firmware version is too old. Need %d, got %d\n", 348 WPI_FW_MINVERSION, 349 fp->version); 350 error = ENXIO; 351 goto fail; 352 } 353 354 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 355 device_printf(sc->sc_dev, 356 "firmware file too short: %zu bytes\n", fp->datasize); 357 error = ENXIO; 358 goto fail; 359 } 360 361 hdr = (const struct wpi_firmware_hdr *)fp->data; 362 363 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 364 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 365 366 rtextsz = le32toh(hdr->rtextsz); 367 rdatasz = le32toh(hdr->rdatasz); 368 itextsz = le32toh(hdr->itextsz); 369 idatasz = le32toh(hdr->idatasz); 370 btextsz = le32toh(hdr->btextsz); 371 372 /* check that all firmware segments are present */ 373 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 374 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 375 device_printf(sc->sc_dev, 376 "firmware file too short: %zu bytes\n", fp->datasize); 377 error = ENXIO; /* XXX appropriate error code? */ 378 goto fail; 379 } 380 381 /* get pointers to firmware segments */ 382 rtext = (const uint8_t *)(hdr + 1); 383 rdata = rtext + rtextsz; 384 itext = rdata + rdatasz; 385 idata = itext + itextsz; 386 btext = idata + idatasz; 387 388 DPRINTFN(WPI_DEBUG_FIRMWARE, 389 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 390 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 391 (le32toh(hdr->version) & 0xff000000) >> 24, 392 (le32toh(hdr->version) & 0x00ff0000) >> 16, 393 (le32toh(hdr->version) & 0x0000ffff), 394 rtextsz, rdatasz, 395 itextsz, idatasz, btextsz)); 396 397 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 398 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 399 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 400 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 401 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 402 403 /* sanity checks */ 404 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 405 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 406 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 407 idatasz > WPI_FW_INIT_DATA_MAXSZ || 408 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 409 (btextsz & 3) != 0) { 410 device_printf(sc->sc_dev, "firmware invalid\n"); 411 error = EINVAL; 412 goto fail; 413 } 414 415 /* copy initialization images into pre-allocated DMA-safe memory */ 416 memcpy(dma->vaddr, idata, idatasz); 417 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 418 419 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 420 421 /* tell adapter where to find initialization images */ 422 wpi_mem_lock(sc); 423 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 424 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 425 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 426 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 427 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 428 wpi_mem_unlock(sc); 429 430 /* load firmware boot code */ 431 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 432 device_printf(sc->sc_dev, "Failed to load microcode\n"); 433 goto fail; 434 } 435 436 /* now press "execute" */ 437 WPI_WRITE(sc, WPI_RESET, 0); 438 439 /* wait at most one second for the first alive notification */ 440 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 441 device_printf(sc->sc_dev, 442 "timeout waiting for adapter to initialize\n"); 443 goto fail; 444 } 445 446 /* copy runtime images into pre-allocated DMA-sage memory */ 447 memcpy(dma->vaddr, rdata, rdatasz); 448 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 449 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 450 451 /* tell adapter where to find runtime images */ 452 wpi_mem_lock(sc); 453 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 454 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 455 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 456 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 457 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 458 wpi_mem_unlock(sc); 459 460 /* wait at most one second for the first alive notification */ 461 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 462 device_printf(sc->sc_dev, 463 "timeout waiting for adapter to initialize2\n"); 464 goto fail; 465 } 466 467 DPRINTFN(WPI_DEBUG_FIRMWARE, 468 ("Firmware loaded to driver successfully\n")); 469 return error; 470fail: 471 wpi_unload_firmware(sc); 472 return error; 473} 474 475/** 476 * Free the referenced firmware image 477 */ 478static void 479wpi_unload_firmware(struct wpi_softc *sc) 480{ 481 482 if (sc->fw_fp) { 483 WPI_UNLOCK(sc); 484 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 485 WPI_LOCK(sc); 486 sc->fw_fp = NULL; 487 } 488} 489 490static int 491wpi_attach(device_t dev) 492{ 493 struct wpi_softc *sc = device_get_softc(dev); 494 struct ifnet *ifp; 495 struct ieee80211com *ic; 496 int ac, error, supportsa = 1; 497 uint32_t tmp; 498 const struct wpi_ident *ident; 499 uint8_t macaddr[IEEE80211_ADDR_LEN]; 500 501 sc->sc_dev = dev; 502 503 if (bootverbose || WPI_DEBUG_SET) 504 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 505 506 /* 507 * Some card's only support 802.11b/g not a, check to see if 508 * this is one such card. A 0x0 in the subdevice table indicates 509 * the entire subdevice range is to be ignored. 510 */ 511 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 512 if (ident->subdevice && 513 pci_get_subdevice(dev) == ident->subdevice) { 514 supportsa = 0; 515 break; 516 } 517 } 518 519 /* Create the tasks that can be queued */ 520 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc); 521 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc); 522 523 WPI_LOCK_INIT(sc); 524 525 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 526 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 527 528 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 529 device_printf(dev, "chip is in D%d power mode " 530 "-- setting to D0\n", pci_get_powerstate(dev)); 531 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 532 } 533 534 /* disable the retry timeout register */ 535 pci_write_config(dev, 0x41, 0, 1); 536 537 /* enable bus-mastering */ 538 pci_enable_busmaster(dev); 539 540 sc->mem_rid = PCIR_BAR(0); 541 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 542 RF_ACTIVE); 543 if (sc->mem == NULL) { 544 device_printf(dev, "could not allocate memory resource\n"); 545 error = ENOMEM; 546 goto fail; 547 } 548 549 sc->sc_st = rman_get_bustag(sc->mem); 550 sc->sc_sh = rman_get_bushandle(sc->mem); 551 552 sc->irq_rid = 0; 553 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 554 RF_ACTIVE | RF_SHAREABLE); 555 if (sc->irq == NULL) { 556 device_printf(dev, "could not allocate interrupt resource\n"); 557 error = ENOMEM; 558 goto fail; 559 } 560 561 /* 562 * Allocate DMA memory for firmware transfers. 563 */ 564 if ((error = wpi_alloc_fwmem(sc)) != 0) { 565 printf(": could not allocate firmware memory\n"); 566 error = ENOMEM; 567 goto fail; 568 } 569 570 /* 571 * Put adapter into a known state. 572 */ 573 if ((error = wpi_reset(sc)) != 0) { 574 device_printf(dev, "could not reset adapter\n"); 575 goto fail; 576 } 577 578 wpi_mem_lock(sc); 579 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 580 if (bootverbose || WPI_DEBUG_SET) 581 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 582 583 wpi_mem_unlock(sc); 584 585 /* Allocate shared page */ 586 if ((error = wpi_alloc_shared(sc)) != 0) { 587 device_printf(dev, "could not allocate shared page\n"); 588 goto fail; 589 } 590 591 /* tx data queues - 4 for QoS purposes */ 592 for (ac = 0; ac < WME_NUM_AC; ac++) { 593 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 594 if (error != 0) { 595 device_printf(dev, "could not allocate Tx ring %d\n",ac); 596 goto fail; 597 } 598 } 599 600 /* command queue to talk to the card's firmware */ 601 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 602 if (error != 0) { 603 device_printf(dev, "could not allocate command ring\n"); 604 goto fail; 605 } 606 607 /* receive data queue */ 608 error = wpi_alloc_rx_ring(sc, &sc->rxq); 609 if (error != 0) { 610 device_printf(dev, "could not allocate Rx ring\n"); 611 goto fail; 612 } 613 614 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 615 if (ifp == NULL) { 616 device_printf(dev, "can not if_alloc()\n"); 617 error = ENOMEM; 618 goto fail; 619 } 620 ic = ifp->if_l2com; 621 622 ic->ic_ifp = ifp; 623 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 624 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 625 626 /* set device capabilities */ 627 ic->ic_caps = 628 IEEE80211_C_STA /* station mode supported */ 629 | IEEE80211_C_MONITOR /* monitor mode supported */ 630 | IEEE80211_C_TXPMGT /* tx power management */ 631 | IEEE80211_C_SHSLOT /* short slot time supported */ 632 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 633 | IEEE80211_C_WPA /* 802.11i */ 634/* XXX looks like WME is partly supported? */ 635#if 0 636 | IEEE80211_C_IBSS /* IBSS mode support */ 637 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 638 | IEEE80211_C_WME /* 802.11e */ 639 | IEEE80211_C_HOSTAP /* Host access point mode */ 640#endif 641 ; 642 643 /* 644 * Read in the eeprom and also setup the channels for 645 * net80211. We don't set the rates as net80211 does this for us 646 */ 647 wpi_read_eeprom(sc, macaddr); 648 649 if (bootverbose || WPI_DEBUG_SET) { 650 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 651 device_printf(sc->sc_dev, "Hardware Type: %c\n", 652 sc->type > 1 ? 'B': '?'); 653 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 654 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 655 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 656 supportsa ? "does" : "does not"); 657 658 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 659 what sc->rev really represents - benjsc 20070615 */ 660 } 661 662 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 663 ifp->if_softc = sc; 664 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 665 ifp->if_init = wpi_init; 666 ifp->if_ioctl = wpi_ioctl; 667 ifp->if_start = wpi_start; 668 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 669 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 670 IFQ_SET_READY(&ifp->if_snd); 671 672 ieee80211_ifattach(ic, macaddr); 673 /* override default methods */ 674 ic->ic_raw_xmit = wpi_raw_xmit; 675 ic->ic_wme.wme_update = wpi_wme_update; 676 ic->ic_scan_start = wpi_scan_start; 677 ic->ic_scan_end = wpi_scan_end; 678 ic->ic_set_channel = wpi_set_channel; 679 ic->ic_scan_curchan = wpi_scan_curchan; 680 ic->ic_scan_mindwell = wpi_scan_mindwell; 681 682 ic->ic_vap_create = wpi_vap_create; 683 ic->ic_vap_delete = wpi_vap_delete; 684 685 ieee80211_radiotap_attach(ic, 686 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 687 WPI_TX_RADIOTAP_PRESENT, 688 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 689 WPI_RX_RADIOTAP_PRESENT); 690 691 /* 692 * Hook our interrupt after all initialization is complete. 693 */ 694 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 695 NULL, wpi_intr, sc, &sc->sc_ih); 696 if (error != 0) { 697 device_printf(dev, "could not set up interrupt\n"); 698 goto fail; 699 } 700 701 if (bootverbose) 702 ieee80211_announce(ic); 703#ifdef XXX_DEBUG 704 ieee80211_announce_channels(ic); 705#endif 706 return 0; 707 708fail: wpi_detach(dev); 709 return ENXIO; 710} 711 712static int 713wpi_detach(device_t dev) 714{ 715 struct wpi_softc *sc = device_get_softc(dev); 716 struct ifnet *ifp = sc->sc_ifp; 717 struct ieee80211com *ic; 718 int ac; 719 720 if (ifp != NULL) { 721 ic = ifp->if_l2com; 722 723 ieee80211_draintask(ic, &sc->sc_restarttask); 724 ieee80211_draintask(ic, &sc->sc_radiotask); 725 wpi_stop(sc); 726 callout_drain(&sc->watchdog_to); 727 callout_drain(&sc->calib_to); 728 ieee80211_ifdetach(ic); 729 } 730 731 WPI_LOCK(sc); 732 if (sc->txq[0].data_dmat) { 733 for (ac = 0; ac < WME_NUM_AC; ac++) 734 wpi_free_tx_ring(sc, &sc->txq[ac]); 735 736 wpi_free_tx_ring(sc, &sc->cmdq); 737 wpi_free_rx_ring(sc, &sc->rxq); 738 wpi_free_shared(sc); 739 } 740 741 if (sc->fw_fp != NULL) { 742 wpi_unload_firmware(sc); 743 } 744 745 if (sc->fw_dma.tag) 746 wpi_free_fwmem(sc); 747 WPI_UNLOCK(sc); 748 749 if (sc->irq != NULL) { 750 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 751 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 752 } 753 754 if (sc->mem != NULL) 755 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 756 757 if (ifp != NULL) 758 if_free(ifp); 759 760 WPI_LOCK_DESTROY(sc); 761 762 return 0; 763} 764 765static struct ieee80211vap * 766wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 767 enum ieee80211_opmode opmode, int flags, 768 const uint8_t bssid[IEEE80211_ADDR_LEN], 769 const uint8_t mac[IEEE80211_ADDR_LEN]) 770{ 771 struct wpi_vap *wvp; 772 struct ieee80211vap *vap; 773 774 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 775 return NULL; 776 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 777 M_80211_VAP, M_NOWAIT | M_ZERO); 778 if (wvp == NULL) 779 return NULL; 780 vap = &wvp->vap; 781 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 782 /* override with driver methods */ 783 wvp->newstate = vap->iv_newstate; 784 vap->iv_newstate = wpi_newstate; 785 786 ieee80211_ratectl_init(vap); 787 /* complete setup */ 788 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 789 ic->ic_opmode = opmode; 790 return vap; 791} 792 793static void 794wpi_vap_delete(struct ieee80211vap *vap) 795{ 796 struct wpi_vap *wvp = WPI_VAP(vap); 797 798 ieee80211_ratectl_deinit(vap); 799 ieee80211_vap_detach(vap); 800 free(wvp, M_80211_VAP); 801} 802 803static void 804wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 805{ 806 if (error != 0) 807 return; 808 809 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 810 811 *(bus_addr_t *)arg = segs[0].ds_addr; 812} 813 814/* 815 * Allocates a contiguous block of dma memory of the requested size and 816 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 817 * allocations greater than 4096 may fail. Hence if the requested alignment is 818 * greater we allocate 'alignment' size extra memory and shift the vaddr and 819 * paddr after the dma load. This bypasses the problem at the cost of a little 820 * more memory. 821 */ 822static int 823wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 824 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 825{ 826 int error; 827 bus_size_t align; 828 bus_size_t reqsize; 829 830 DPRINTFN(WPI_DEBUG_DMA, 831 ("Size: %zd - alignment %zd\n", size, alignment)); 832 833 dma->size = size; 834 dma->tag = NULL; 835 836 if (alignment > 4096) { 837 align = PAGE_SIZE; 838 reqsize = size + alignment; 839 } else { 840 align = alignment; 841 reqsize = size; 842 } 843 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 844 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 845 NULL, NULL, reqsize, 846 1, reqsize, flags, 847 NULL, NULL, &dma->tag); 848 if (error != 0) { 849 device_printf(sc->sc_dev, 850 "could not create shared page DMA tag\n"); 851 goto fail; 852 } 853 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 854 flags | BUS_DMA_ZERO, &dma->map); 855 if (error != 0) { 856 device_printf(sc->sc_dev, 857 "could not allocate shared page DMA memory\n"); 858 goto fail; 859 } 860 861 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 862 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 863 864 /* Save the original pointers so we can free all the memory */ 865 dma->paddr = dma->paddr_start; 866 dma->vaddr = dma->vaddr_start; 867 868 /* 869 * Check the alignment and increment by 4096 until we get the 870 * requested alignment. Fail if can't obtain the alignment 871 * we requested. 872 */ 873 if ((dma->paddr & (alignment -1 )) != 0) { 874 int i; 875 876 for (i = 0; i < alignment / 4096; i++) { 877 if ((dma->paddr & (alignment - 1 )) == 0) 878 break; 879 dma->paddr += 4096; 880 dma->vaddr += 4096; 881 } 882 if (i == alignment / 4096) { 883 device_printf(sc->sc_dev, 884 "alignment requirement was not satisfied\n"); 885 goto fail; 886 } 887 } 888 889 if (error != 0) { 890 device_printf(sc->sc_dev, 891 "could not load shared page DMA map\n"); 892 goto fail; 893 } 894 895 if (kvap != NULL) 896 *kvap = dma->vaddr; 897 898 return 0; 899 900fail: 901 wpi_dma_contig_free(dma); 902 return error; 903} 904 905static void 906wpi_dma_contig_free(struct wpi_dma_info *dma) 907{ 908 if (dma->tag) { 909 if (dma->map != NULL) { 910 if (dma->paddr_start != 0) { 911 bus_dmamap_sync(dma->tag, dma->map, 912 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 913 bus_dmamap_unload(dma->tag, dma->map); 914 } 915 bus_dmamem_free(dma->tag, &dma->vaddr_start, dma->map); 916 } 917 bus_dma_tag_destroy(dma->tag); 918 } 919} 920 921/* 922 * Allocate a shared page between host and NIC. 923 */ 924static int 925wpi_alloc_shared(struct wpi_softc *sc) 926{ 927 int error; 928 929 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 930 (void **)&sc->shared, sizeof (struct wpi_shared), 931 PAGE_SIZE, 932 BUS_DMA_NOWAIT); 933 934 if (error != 0) { 935 device_printf(sc->sc_dev, 936 "could not allocate shared area DMA memory\n"); 937 } 938 939 return error; 940} 941 942static void 943wpi_free_shared(struct wpi_softc *sc) 944{ 945 wpi_dma_contig_free(&sc->shared_dma); 946} 947 948static int 949wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 950{ 951 952 int i, error; 953 954 ring->cur = 0; 955 956 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 957 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 958 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 959 960 if (error != 0) { 961 device_printf(sc->sc_dev, 962 "%s: could not allocate rx ring DMA memory, error %d\n", 963 __func__, error); 964 goto fail; 965 } 966 967 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 968 BUS_SPACE_MAXADDR_32BIT, 969 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 970 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 971 if (error != 0) { 972 device_printf(sc->sc_dev, 973 "%s: bus_dma_tag_create_failed, error %d\n", 974 __func__, error); 975 goto fail; 976 } 977 978 /* 979 * Setup Rx buffers. 980 */ 981 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 982 struct wpi_rx_data *data = &ring->data[i]; 983 struct mbuf *m; 984 bus_addr_t paddr; 985 986 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 987 if (error != 0) { 988 device_printf(sc->sc_dev, 989 "%s: bus_dmamap_create failed, error %d\n", 990 __func__, error); 991 goto fail; 992 } 993 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 994 if (m == NULL) { 995 device_printf(sc->sc_dev, 996 "%s: could not allocate rx mbuf\n", __func__); 997 error = ENOMEM; 998 goto fail; 999 } 1000 /* map page */ 1001 error = bus_dmamap_load(ring->data_dmat, data->map, 1002 mtod(m, caddr_t), MJUMPAGESIZE, 1003 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1004 if (error != 0 && error != EFBIG) { 1005 device_printf(sc->sc_dev, 1006 "%s: bus_dmamap_load failed, error %d\n", 1007 __func__, error); 1008 m_freem(m); 1009 error = ENOMEM; /* XXX unique code */ 1010 goto fail; 1011 } 1012 bus_dmamap_sync(ring->data_dmat, data->map, 1013 BUS_DMASYNC_PREWRITE); 1014 1015 data->m = m; 1016 ring->desc[i] = htole32(paddr); 1017 } 1018 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1019 BUS_DMASYNC_PREWRITE); 1020 return 0; 1021fail: 1022 wpi_free_rx_ring(sc, ring); 1023 return error; 1024} 1025 1026static void 1027wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1028{ 1029 int ntries; 1030 1031 wpi_mem_lock(sc); 1032 1033 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1034 1035 for (ntries = 0; ntries < 100; ntries++) { 1036 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1037 break; 1038 DELAY(10); 1039 } 1040 1041 wpi_mem_unlock(sc); 1042 1043#ifdef WPI_DEBUG 1044 if (ntries == 100 && wpi_debug > 0) 1045 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1046#endif 1047 1048 ring->cur = 0; 1049} 1050 1051static void 1052wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1053{ 1054 int i; 1055 1056 wpi_dma_contig_free(&ring->desc_dma); 1057 1058 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1059 struct wpi_rx_data *data = &ring->data[i]; 1060 1061 if (data->m != NULL) { 1062 bus_dmamap_sync(ring->data_dmat, data->map, 1063 BUS_DMASYNC_POSTREAD); 1064 bus_dmamap_unload(ring->data_dmat, data->map); 1065 m_freem(data->m); 1066 } 1067 if (data->map != NULL) 1068 bus_dmamap_destroy(ring->data_dmat, data->map); 1069 } 1070} 1071 1072static int 1073wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1074 int qid) 1075{ 1076 struct wpi_tx_data *data; 1077 int i, error; 1078 1079 ring->qid = qid; 1080 ring->count = count; 1081 ring->queued = 0; 1082 ring->cur = 0; 1083 ring->data = NULL; 1084 1085 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1086 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1087 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1088 1089 if (error != 0) { 1090 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1091 goto fail; 1092 } 1093 1094 /* update shared page with ring's base address */ 1095 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1096 1097 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1098 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1099 BUS_DMA_NOWAIT); 1100 1101 if (error != 0) { 1102 device_printf(sc->sc_dev, 1103 "could not allocate tx command DMA memory\n"); 1104 goto fail; 1105 } 1106 1107 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1108 M_NOWAIT | M_ZERO); 1109 if (ring->data == NULL) { 1110 device_printf(sc->sc_dev, 1111 "could not allocate tx data slots\n"); 1112 goto fail; 1113 } 1114 1115 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1116 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1117 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1118 &ring->data_dmat); 1119 if (error != 0) { 1120 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1121 goto fail; 1122 } 1123 1124 for (i = 0; i < count; i++) { 1125 data = &ring->data[i]; 1126 1127 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1128 if (error != 0) { 1129 device_printf(sc->sc_dev, 1130 "could not create tx buf DMA map\n"); 1131 goto fail; 1132 } 1133 bus_dmamap_sync(ring->data_dmat, data->map, 1134 BUS_DMASYNC_PREWRITE); 1135 } 1136 1137 return 0; 1138 1139fail: 1140 wpi_free_tx_ring(sc, ring); 1141 return error; 1142} 1143 1144static void 1145wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1146{ 1147 struct wpi_tx_data *data; 1148 int i, ntries; 1149 1150 wpi_mem_lock(sc); 1151 1152 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1153 for (ntries = 0; ntries < 100; ntries++) { 1154 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1155 break; 1156 DELAY(10); 1157 } 1158#ifdef WPI_DEBUG 1159 if (ntries == 100 && wpi_debug > 0) 1160 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1161 ring->qid); 1162#endif 1163 wpi_mem_unlock(sc); 1164 1165 for (i = 0; i < ring->count; i++) { 1166 data = &ring->data[i]; 1167 1168 if (data->m != NULL) { 1169 bus_dmamap_unload(ring->data_dmat, data->map); 1170 m_freem(data->m); 1171 data->m = NULL; 1172 } 1173 } 1174 1175 ring->queued = 0; 1176 ring->cur = 0; 1177} 1178 1179static void 1180wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1181{ 1182 struct wpi_tx_data *data; 1183 int i; 1184 1185 wpi_dma_contig_free(&ring->desc_dma); 1186 wpi_dma_contig_free(&ring->cmd_dma); 1187 1188 if (ring->data != NULL) { 1189 for (i = 0; i < ring->count; i++) { 1190 data = &ring->data[i]; 1191 1192 if (data->m != NULL) { 1193 bus_dmamap_sync(ring->data_dmat, data->map, 1194 BUS_DMASYNC_POSTWRITE); 1195 bus_dmamap_unload(ring->data_dmat, data->map); 1196 m_freem(data->m); 1197 data->m = NULL; 1198 } 1199 } 1200 free(ring->data, M_DEVBUF); 1201 } 1202 1203 if (ring->data_dmat != NULL) 1204 bus_dma_tag_destroy(ring->data_dmat); 1205} 1206 1207static int 1208wpi_shutdown(device_t dev) 1209{ 1210 struct wpi_softc *sc = device_get_softc(dev); 1211 1212 WPI_LOCK(sc); 1213 wpi_stop_locked(sc); 1214 wpi_unload_firmware(sc); 1215 WPI_UNLOCK(sc); 1216 1217 return 0; 1218} 1219 1220static int 1221wpi_suspend(device_t dev) 1222{ 1223 struct wpi_softc *sc = device_get_softc(dev); 1224 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1225 1226 ieee80211_suspend_all(ic); 1227 return 0; 1228} 1229 1230static int 1231wpi_resume(device_t dev) 1232{ 1233 struct wpi_softc *sc = device_get_softc(dev); 1234 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1235 1236 pci_write_config(dev, 0x41, 0, 1); 1237 1238 ieee80211_resume_all(ic); 1239 return 0; 1240} 1241 1242/** 1243 * Called by net80211 when ever there is a change to 80211 state machine 1244 */ 1245static int 1246wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1247{ 1248 struct wpi_vap *wvp = WPI_VAP(vap); 1249 struct ieee80211com *ic = vap->iv_ic; 1250 struct ifnet *ifp = ic->ic_ifp; 1251 struct wpi_softc *sc = ifp->if_softc; 1252 int error; 1253 1254 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1255 ieee80211_state_name[vap->iv_state], 1256 ieee80211_state_name[nstate], sc->flags)); 1257 1258 IEEE80211_UNLOCK(ic); 1259 WPI_LOCK(sc); 1260 if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) { 1261 /* 1262 * On !INIT -> SCAN transitions, we need to clear any possible 1263 * knowledge about associations. 1264 */ 1265 error = wpi_config(sc); 1266 if (error != 0) { 1267 device_printf(sc->sc_dev, 1268 "%s: device config failed, error %d\n", 1269 __func__, error); 1270 } 1271 } 1272 if (nstate == IEEE80211_S_AUTH || 1273 (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) { 1274 /* 1275 * The node must be registered in the firmware before auth. 1276 * Also the associd must be cleared on RUN -> ASSOC 1277 * transitions. 1278 */ 1279 error = wpi_auth(sc, vap); 1280 if (error != 0) { 1281 device_printf(sc->sc_dev, 1282 "%s: could not move to auth state, error %d\n", 1283 __func__, error); 1284 } 1285 } 1286 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1287 error = wpi_run(sc, vap); 1288 if (error != 0) { 1289 device_printf(sc->sc_dev, 1290 "%s: could not move to run state, error %d\n", 1291 __func__, error); 1292 } 1293 } 1294 if (nstate == IEEE80211_S_RUN) { 1295 /* RUN -> RUN transition; just restart the timers */ 1296 wpi_calib_timeout(sc); 1297 /* XXX split out rate control timer */ 1298 } 1299 WPI_UNLOCK(sc); 1300 IEEE80211_LOCK(ic); 1301 return wvp->newstate(vap, nstate, arg); 1302} 1303 1304/* 1305 * Grab exclusive access to NIC memory. 1306 */ 1307static void 1308wpi_mem_lock(struct wpi_softc *sc) 1309{ 1310 int ntries; 1311 uint32_t tmp; 1312 1313 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1314 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1315 1316 /* spin until we actually get the lock */ 1317 for (ntries = 0; ntries < 100; ntries++) { 1318 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1319 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1320 break; 1321 DELAY(10); 1322 } 1323 if (ntries == 100) 1324 device_printf(sc->sc_dev, "could not lock memory\n"); 1325} 1326 1327/* 1328 * Release lock on NIC memory. 1329 */ 1330static void 1331wpi_mem_unlock(struct wpi_softc *sc) 1332{ 1333 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1334 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1335} 1336 1337static uint32_t 1338wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1339{ 1340 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1341 return WPI_READ(sc, WPI_READ_MEM_DATA); 1342} 1343 1344static void 1345wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1346{ 1347 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1348 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1349} 1350 1351static void 1352wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1353 const uint32_t *data, int wlen) 1354{ 1355 for (; wlen > 0; wlen--, data++, addr+=4) 1356 wpi_mem_write(sc, addr, *data); 1357} 1358 1359/* 1360 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1361 * using the traditional bit-bang method. Data is read up until len bytes have 1362 * been obtained. 1363 */ 1364static uint16_t 1365wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1366{ 1367 int ntries; 1368 uint32_t val; 1369 uint8_t *out = data; 1370 1371 wpi_mem_lock(sc); 1372 1373 for (; len > 0; len -= 2, addr++) { 1374 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1375 1376 for (ntries = 0; ntries < 10; ntries++) { 1377 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1378 break; 1379 DELAY(5); 1380 } 1381 1382 if (ntries == 10) { 1383 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1384 return ETIMEDOUT; 1385 } 1386 1387 *out++= val >> 16; 1388 if (len > 1) 1389 *out ++= val >> 24; 1390 } 1391 1392 wpi_mem_unlock(sc); 1393 1394 return 0; 1395} 1396 1397/* 1398 * The firmware text and data segments are transferred to the NIC using DMA. 1399 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1400 * where to find it. Once the NIC has copied the firmware into its internal 1401 * memory, we can free our local copy in the driver. 1402 */ 1403static int 1404wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1405{ 1406 int error, ntries; 1407 1408 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1409 1410 size /= sizeof(uint32_t); 1411 1412 wpi_mem_lock(sc); 1413 1414 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1415 (const uint32_t *)fw, size); 1416 1417 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1418 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1419 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1420 1421 /* run microcode */ 1422 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1423 1424 /* wait while the adapter is busy copying the firmware */ 1425 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1426 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1427 DPRINTFN(WPI_DEBUG_HW, 1428 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1429 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1430 if (status & WPI_TX_IDLE(6)) { 1431 DPRINTFN(WPI_DEBUG_HW, 1432 ("Status Match! - ntries = %d\n", ntries)); 1433 break; 1434 } 1435 DELAY(10); 1436 } 1437 if (ntries == 1000) { 1438 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1439 error = ETIMEDOUT; 1440 } 1441 1442 /* start the microcode executing */ 1443 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1444 1445 wpi_mem_unlock(sc); 1446 1447 return (error); 1448} 1449 1450static void 1451wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1452 struct wpi_rx_data *data) 1453{ 1454 struct ifnet *ifp = sc->sc_ifp; 1455 struct ieee80211com *ic = ifp->if_l2com; 1456 struct wpi_rx_ring *ring = &sc->rxq; 1457 struct wpi_rx_stat *stat; 1458 struct wpi_rx_head *head; 1459 struct wpi_rx_tail *tail; 1460 struct ieee80211_node *ni; 1461 struct mbuf *m, *mnew; 1462 bus_addr_t paddr; 1463 int error; 1464 1465 stat = (struct wpi_rx_stat *)(desc + 1); 1466 1467 if (stat->len > WPI_STAT_MAXLEN) { 1468 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1469 ifp->if_ierrors++; 1470 return; 1471 } 1472 1473 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1474 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1475 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1476 1477 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1478 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1479 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1480 (uintmax_t)le64toh(tail->tstamp))); 1481 1482 /* discard Rx frames with bad CRC early */ 1483 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1484 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1485 le32toh(tail->flags))); 1486 ifp->if_ierrors++; 1487 return; 1488 } 1489 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1490 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1491 le16toh(head->len))); 1492 ifp->if_ierrors++; 1493 return; 1494 } 1495 1496 /* XXX don't need mbuf, just dma buffer */ 1497 mnew = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1498 if (mnew == NULL) { 1499 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1500 __func__)); 1501 ifp->if_ierrors++; 1502 return; 1503 } 1504 bus_dmamap_unload(ring->data_dmat, data->map); 1505 1506 error = bus_dmamap_load(ring->data_dmat, data->map, 1507 mtod(mnew, caddr_t), MJUMPAGESIZE, 1508 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1509 if (error != 0 && error != EFBIG) { 1510 device_printf(sc->sc_dev, 1511 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1512 m_freem(mnew); 1513 ifp->if_ierrors++; 1514 return; 1515 } 1516 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1517 1518 /* finalize mbuf and swap in new one */ 1519 m = data->m; 1520 m->m_pkthdr.rcvif = ifp; 1521 m->m_data = (caddr_t)(head + 1); 1522 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1523 1524 data->m = mnew; 1525 /* update Rx descriptor */ 1526 ring->desc[ring->cur] = htole32(paddr); 1527 1528 if (ieee80211_radiotap_active(ic)) { 1529 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1530 1531 tap->wr_flags = 0; 1532 tap->wr_chan_freq = 1533 htole16(ic->ic_channels[head->chan].ic_freq); 1534 tap->wr_chan_flags = 1535 htole16(ic->ic_channels[head->chan].ic_flags); 1536 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1537 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1538 tap->wr_tsft = tail->tstamp; 1539 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1540 switch (head->rate) { 1541 /* CCK rates */ 1542 case 10: tap->wr_rate = 2; break; 1543 case 20: tap->wr_rate = 4; break; 1544 case 55: tap->wr_rate = 11; break; 1545 case 110: tap->wr_rate = 22; break; 1546 /* OFDM rates */ 1547 case 0xd: tap->wr_rate = 12; break; 1548 case 0xf: tap->wr_rate = 18; break; 1549 case 0x5: tap->wr_rate = 24; break; 1550 case 0x7: tap->wr_rate = 36; break; 1551 case 0x9: tap->wr_rate = 48; break; 1552 case 0xb: tap->wr_rate = 72; break; 1553 case 0x1: tap->wr_rate = 96; break; 1554 case 0x3: tap->wr_rate = 108; break; 1555 /* unknown rate: should not happen */ 1556 default: tap->wr_rate = 0; 1557 } 1558 if (le16toh(head->flags) & 0x4) 1559 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1560 } 1561 1562 WPI_UNLOCK(sc); 1563 1564 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1565 if (ni != NULL) { 1566 (void) ieee80211_input(ni, m, stat->rssi, 0); 1567 ieee80211_free_node(ni); 1568 } else 1569 (void) ieee80211_input_all(ic, m, stat->rssi, 0); 1570 1571 WPI_LOCK(sc); 1572} 1573 1574static void 1575wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1576{ 1577 struct ifnet *ifp = sc->sc_ifp; 1578 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1579 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1580 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1581 struct ieee80211_node *ni = txdata->ni; 1582 struct ieee80211vap *vap = ni->ni_vap; 1583 int retrycnt = 0; 1584 1585 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1586 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1587 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1588 le32toh(stat->status))); 1589 1590 /* 1591 * Update rate control statistics for the node. 1592 * XXX we should not count mgmt frames since they're always sent at 1593 * the lowest available bit-rate. 1594 * XXX frames w/o ACK shouldn't be used either 1595 */ 1596 if (stat->ntries > 0) { 1597 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1598 retrycnt = 1; 1599 } 1600 ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS, 1601 &retrycnt, NULL); 1602 1603 /* XXX oerrors should only count errors !maxtries */ 1604 if ((le32toh(stat->status) & 0xff) != 1) 1605 ifp->if_oerrors++; 1606 else 1607 ifp->if_opackets++; 1608 1609 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1610 bus_dmamap_unload(ring->data_dmat, txdata->map); 1611 /* XXX handle M_TXCB? */ 1612 m_freem(txdata->m); 1613 txdata->m = NULL; 1614 ieee80211_free_node(txdata->ni); 1615 txdata->ni = NULL; 1616 1617 ring->queued--; 1618 1619 sc->sc_tx_timer = 0; 1620 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1621 wpi_start_locked(ifp); 1622} 1623 1624static void 1625wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1626{ 1627 struct wpi_tx_ring *ring = &sc->cmdq; 1628 struct wpi_tx_data *data; 1629 1630 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1631 "type=%s len=%d\n", desc->qid, desc->idx, 1632 desc->flags, wpi_cmd_str(desc->type), 1633 le32toh(desc->len))); 1634 1635 if ((desc->qid & 7) != 4) 1636 return; /* not a command ack */ 1637 1638 data = &ring->data[desc->idx]; 1639 1640 /* if the command was mapped in a mbuf, free it */ 1641 if (data->m != NULL) { 1642 bus_dmamap_unload(ring->data_dmat, data->map); 1643 m_freem(data->m); 1644 data->m = NULL; 1645 } 1646 1647 sc->flags &= ~WPI_FLAG_BUSY; 1648 wakeup(&ring->cmd[desc->idx]); 1649} 1650 1651static void 1652wpi_notif_intr(struct wpi_softc *sc) 1653{ 1654 struct ifnet *ifp = sc->sc_ifp; 1655 struct ieee80211com *ic = ifp->if_l2com; 1656 struct wpi_rx_desc *desc; 1657 struct wpi_rx_data *data; 1658 uint32_t hw; 1659 1660 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1661 BUS_DMASYNC_POSTREAD); 1662 1663 hw = le32toh(sc->shared->next); 1664 while (sc->rxq.cur != hw) { 1665 data = &sc->rxq.data[sc->rxq.cur]; 1666 1667 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1668 BUS_DMASYNC_POSTREAD); 1669 desc = (void *)data->m->m_ext.ext_buf; 1670 1671 DPRINTFN(WPI_DEBUG_NOTIFY, 1672 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1673 desc->qid, 1674 desc->idx, 1675 desc->flags, 1676 desc->type, 1677 le32toh(desc->len))); 1678 1679 if (!(desc->qid & 0x80)) /* reply to a command */ 1680 wpi_cmd_intr(sc, desc); 1681 1682 switch (desc->type) { 1683 case WPI_RX_DONE: 1684 /* a 802.11 frame was received */ 1685 wpi_rx_intr(sc, desc, data); 1686 break; 1687 1688 case WPI_TX_DONE: 1689 /* a 802.11 frame has been transmitted */ 1690 wpi_tx_intr(sc, desc); 1691 break; 1692 1693 case WPI_UC_READY: 1694 { 1695 struct wpi_ucode_info *uc = 1696 (struct wpi_ucode_info *)(desc + 1); 1697 1698 /* the microcontroller is ready */ 1699 DPRINTF(("microcode alive notification version %x " 1700 "alive %x\n", le32toh(uc->version), 1701 le32toh(uc->valid))); 1702 1703 if (le32toh(uc->valid) != 1) { 1704 device_printf(sc->sc_dev, 1705 "microcontroller initialization failed\n"); 1706 wpi_stop_locked(sc); 1707 } 1708 break; 1709 } 1710 case WPI_STATE_CHANGED: 1711 { 1712 uint32_t *status = (uint32_t *)(desc + 1); 1713 1714 /* enabled/disabled notification */ 1715 DPRINTF(("state changed to %x\n", le32toh(*status))); 1716 1717 if (le32toh(*status) & 1) { 1718 device_printf(sc->sc_dev, 1719 "Radio transmitter is switched off\n"); 1720 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1721 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1722 /* Disable firmware commands */ 1723 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1724 } 1725 break; 1726 } 1727 case WPI_START_SCAN: 1728 { 1729#ifdef WPI_DEBUG 1730 struct wpi_start_scan *scan = 1731 (struct wpi_start_scan *)(desc + 1); 1732#endif 1733 1734 DPRINTFN(WPI_DEBUG_SCANNING, 1735 ("scanning channel %d status %x\n", 1736 scan->chan, le32toh(scan->status))); 1737 break; 1738 } 1739 case WPI_STOP_SCAN: 1740 { 1741#ifdef WPI_DEBUG 1742 struct wpi_stop_scan *scan = 1743 (struct wpi_stop_scan *)(desc + 1); 1744#endif 1745 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1746 1747 DPRINTFN(WPI_DEBUG_SCANNING, 1748 ("scan finished nchan=%d status=%d chan=%d\n", 1749 scan->nchan, scan->status, scan->chan)); 1750 1751 sc->sc_scan_timer = 0; 1752 ieee80211_scan_next(vap); 1753 break; 1754 } 1755 case WPI_MISSED_BEACON: 1756 { 1757 struct wpi_missed_beacon *beacon = 1758 (struct wpi_missed_beacon *)(desc + 1); 1759 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1760 1761 if (le32toh(beacon->consecutive) >= 1762 vap->iv_bmissthreshold) { 1763 DPRINTF(("Beacon miss: %u >= %u\n", 1764 le32toh(beacon->consecutive), 1765 vap->iv_bmissthreshold)); 1766 ieee80211_beacon_miss(ic); 1767 } 1768 break; 1769 } 1770 } 1771 1772 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1773 } 1774 1775 /* tell the firmware what we have processed */ 1776 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1777 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1778} 1779 1780static void 1781wpi_intr(void *arg) 1782{ 1783 struct wpi_softc *sc = arg; 1784 uint32_t r; 1785 1786 WPI_LOCK(sc); 1787 1788 r = WPI_READ(sc, WPI_INTR); 1789 if (r == 0 || r == 0xffffffff) { 1790 WPI_UNLOCK(sc); 1791 return; 1792 } 1793 1794 /* disable interrupts */ 1795 WPI_WRITE(sc, WPI_MASK, 0); 1796 /* ack interrupts */ 1797 WPI_WRITE(sc, WPI_INTR, r); 1798 1799 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1800 struct ifnet *ifp = sc->sc_ifp; 1801 struct ieee80211com *ic = ifp->if_l2com; 1802 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1803 1804 device_printf(sc->sc_dev, "fatal firmware error\n"); 1805 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1806 "(Hardware Error)")); 1807 if (vap != NULL) 1808 ieee80211_cancel_scan(vap); 1809 ieee80211_runtask(ic, &sc->sc_restarttask); 1810 sc->flags &= ~WPI_FLAG_BUSY; 1811 WPI_UNLOCK(sc); 1812 return; 1813 } 1814 1815 if (r & WPI_RX_INTR) 1816 wpi_notif_intr(sc); 1817 1818 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1819 wakeup(sc); 1820 1821 /* re-enable interrupts */ 1822 if (sc->sc_ifp->if_flags & IFF_UP) 1823 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1824 1825 WPI_UNLOCK(sc); 1826} 1827 1828static uint8_t 1829wpi_plcp_signal(int rate) 1830{ 1831 switch (rate) { 1832 /* CCK rates (returned values are device-dependent) */ 1833 case 2: return 10; 1834 case 4: return 20; 1835 case 11: return 55; 1836 case 22: return 110; 1837 1838 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1839 /* R1-R4 (ral/ural is R4-R1) */ 1840 case 12: return 0xd; 1841 case 18: return 0xf; 1842 case 24: return 0x5; 1843 case 36: return 0x7; 1844 case 48: return 0x9; 1845 case 72: return 0xb; 1846 case 96: return 0x1; 1847 case 108: return 0x3; 1848 1849 /* unsupported rates (should not get there) */ 1850 default: return 0; 1851 } 1852} 1853 1854/* quickly determine if a given rate is CCK or OFDM */ 1855#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1856 1857/* 1858 * Construct the data packet for a transmit buffer and acutally put 1859 * the buffer onto the transmit ring, kicking the card to process the 1860 * the buffer. 1861 */ 1862static int 1863wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1864 int ac) 1865{ 1866 struct ieee80211vap *vap = ni->ni_vap; 1867 struct ifnet *ifp = sc->sc_ifp; 1868 struct ieee80211com *ic = ifp->if_l2com; 1869 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1870 struct wpi_tx_ring *ring = &sc->txq[ac]; 1871 struct wpi_tx_desc *desc; 1872 struct wpi_tx_data *data; 1873 struct wpi_tx_cmd *cmd; 1874 struct wpi_cmd_data *tx; 1875 struct ieee80211_frame *wh; 1876 const struct ieee80211_txparam *tp; 1877 struct ieee80211_key *k; 1878 struct mbuf *mnew; 1879 int i, error, nsegs, rate, hdrlen, ismcast; 1880 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1881 1882 desc = &ring->desc[ring->cur]; 1883 data = &ring->data[ring->cur]; 1884 1885 wh = mtod(m0, struct ieee80211_frame *); 1886 1887 hdrlen = ieee80211_hdrsize(wh); 1888 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1889 1890 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1891 k = ieee80211_crypto_encap(ni, m0); 1892 if (k == NULL) { 1893 m_freem(m0); 1894 return ENOBUFS; 1895 } 1896 /* packet header may have moved, reset our local pointer */ 1897 wh = mtod(m0, struct ieee80211_frame *); 1898 } 1899 1900 cmd = &ring->cmd[ring->cur]; 1901 cmd->code = WPI_CMD_TX_DATA; 1902 cmd->flags = 0; 1903 cmd->qid = ring->qid; 1904 cmd->idx = ring->cur; 1905 1906 tx = (struct wpi_cmd_data *)cmd->data; 1907 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1908 tx->timeout = htole16(0); 1909 tx->ofdm_mask = 0xff; 1910 tx->cck_mask = 0x0f; 1911 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1912 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1913 tx->len = htole16(m0->m_pkthdr.len); 1914 1915 if (!ismcast) { 1916 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1917 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1918 tx->flags |= htole32(WPI_TX_NEED_ACK); 1919 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1920 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1921 tx->rts_ntries = 7; 1922 } 1923 } 1924 /* pick a rate */ 1925 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1926 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1927 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1928 /* tell h/w to set timestamp in probe responses */ 1929 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1930 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1931 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1932 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1933 tx->timeout = htole16(3); 1934 else 1935 tx->timeout = htole16(2); 1936 rate = tp->mgmtrate; 1937 } else if (ismcast) { 1938 rate = tp->mcastrate; 1939 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1940 rate = tp->ucastrate; 1941 } else { 1942 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1943 rate = ni->ni_txrate; 1944 } 1945 tx->rate = wpi_plcp_signal(rate); 1946 1947 /* be very persistant at sending frames out */ 1948#if 0 1949 tx->data_ntries = tp->maxretry; 1950#else 1951 tx->data_ntries = 15; /* XXX way too high */ 1952#endif 1953 1954 if (ieee80211_radiotap_active_vap(vap)) { 1955 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1956 tap->wt_flags = 0; 1957 tap->wt_rate = rate; 1958 tap->wt_hwqueue = ac; 1959 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1960 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1961 1962 ieee80211_radiotap_tx(vap, m0); 1963 } 1964 1965 /* save and trim IEEE802.11 header */ 1966 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1967 m_adj(m0, hdrlen); 1968 1969 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 1970 &nsegs, BUS_DMA_NOWAIT); 1971 if (error != 0 && error != EFBIG) { 1972 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1973 error); 1974 m_freem(m0); 1975 return error; 1976 } 1977 if (error != 0) { 1978 /* XXX use m_collapse */ 1979 mnew = m_defrag(m0, M_NOWAIT); 1980 if (mnew == NULL) { 1981 device_printf(sc->sc_dev, 1982 "could not defragment mbuf\n"); 1983 m_freem(m0); 1984 return ENOBUFS; 1985 } 1986 m0 = mnew; 1987 1988 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 1989 m0, segs, &nsegs, BUS_DMA_NOWAIT); 1990 if (error != 0) { 1991 device_printf(sc->sc_dev, 1992 "could not map mbuf (error %d)\n", error); 1993 m_freem(m0); 1994 return error; 1995 } 1996 } 1997 1998 data->m = m0; 1999 data->ni = ni; 2000 2001 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 2002 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 2003 2004 /* first scatter/gather segment is used by the tx data command */ 2005 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2006 (1 + nsegs) << 24); 2007 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2008 ring->cur * sizeof (struct wpi_tx_cmd)); 2009 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 2010 for (i = 1; i <= nsegs; i++) { 2011 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 2012 desc->segs[i].len = htole32(segs[i - 1].ds_len); 2013 } 2014 2015 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2016 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2017 BUS_DMASYNC_PREWRITE); 2018 2019 ring->queued++; 2020 2021 /* kick ring */ 2022 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2023 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2024 2025 return 0; 2026} 2027 2028/** 2029 * Process data waiting to be sent on the IFNET output queue 2030 */ 2031static void 2032wpi_start(struct ifnet *ifp) 2033{ 2034 struct wpi_softc *sc = ifp->if_softc; 2035 2036 WPI_LOCK(sc); 2037 wpi_start_locked(ifp); 2038 WPI_UNLOCK(sc); 2039} 2040 2041static void 2042wpi_start_locked(struct ifnet *ifp) 2043{ 2044 struct wpi_softc *sc = ifp->if_softc; 2045 struct ieee80211_node *ni; 2046 struct mbuf *m; 2047 int ac; 2048 2049 WPI_LOCK_ASSERT(sc); 2050 2051 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2052 return; 2053 2054 for (;;) { 2055 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2056 if (m == NULL) 2057 break; 2058 ac = M_WME_GETAC(m); 2059 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2060 /* there is no place left in this ring */ 2061 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2062 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2063 break; 2064 } 2065 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2066 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2067 ieee80211_free_node(ni); 2068 ifp->if_oerrors++; 2069 break; 2070 } 2071 sc->sc_tx_timer = 5; 2072 } 2073} 2074 2075static int 2076wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2077 const struct ieee80211_bpf_params *params) 2078{ 2079 struct ieee80211com *ic = ni->ni_ic; 2080 struct ifnet *ifp = ic->ic_ifp; 2081 struct wpi_softc *sc = ifp->if_softc; 2082 2083 /* prevent management frames from being sent if we're not ready */ 2084 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2085 m_freem(m); 2086 ieee80211_free_node(ni); 2087 return ENETDOWN; 2088 } 2089 WPI_LOCK(sc); 2090 2091 /* management frames go into ring 0 */ 2092 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2093 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2094 m_freem(m); 2095 WPI_UNLOCK(sc); 2096 ieee80211_free_node(ni); 2097 return ENOBUFS; /* XXX */ 2098 } 2099 2100 ifp->if_opackets++; 2101 if (wpi_tx_data(sc, m, ni, 0) != 0) 2102 goto bad; 2103 sc->sc_tx_timer = 5; 2104 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2105 2106 WPI_UNLOCK(sc); 2107 return 0; 2108bad: 2109 ifp->if_oerrors++; 2110 WPI_UNLOCK(sc); 2111 ieee80211_free_node(ni); 2112 return EIO; /* XXX */ 2113} 2114 2115static int 2116wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2117{ 2118 struct wpi_softc *sc = ifp->if_softc; 2119 struct ieee80211com *ic = ifp->if_l2com; 2120 struct ifreq *ifr = (struct ifreq *) data; 2121 int error = 0, startall = 0; 2122 2123 switch (cmd) { 2124 case SIOCSIFFLAGS: 2125 WPI_LOCK(sc); 2126 if ((ifp->if_flags & IFF_UP)) { 2127 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2128 wpi_init_locked(sc, 0); 2129 startall = 1; 2130 } 2131 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2132 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2133 wpi_stop_locked(sc); 2134 WPI_UNLOCK(sc); 2135 if (startall) 2136 ieee80211_start_all(ic); 2137 break; 2138 case SIOCGIFMEDIA: 2139 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2140 break; 2141 case SIOCGIFADDR: 2142 error = ether_ioctl(ifp, cmd, data); 2143 break; 2144 default: 2145 error = EINVAL; 2146 break; 2147 } 2148 return error; 2149} 2150 2151/* 2152 * Extract various information from EEPROM. 2153 */ 2154static void 2155wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2156{ 2157 int i; 2158 2159 /* read the hardware capabilities, revision and SKU type */ 2160 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2161 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2162 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2163 2164 /* read the regulatory domain */ 2165 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2166 2167 /* read in the hw MAC address */ 2168 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2169 2170 /* read the list of authorized channels */ 2171 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2172 wpi_read_eeprom_channels(sc,i); 2173 2174 /* read the power level calibration info for each group */ 2175 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2176 wpi_read_eeprom_group(sc,i); 2177} 2178 2179/* 2180 * Send a command to the firmware. 2181 */ 2182static int 2183wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2184{ 2185 struct wpi_tx_ring *ring = &sc->cmdq; 2186 struct wpi_tx_desc *desc; 2187 struct wpi_tx_cmd *cmd; 2188 2189#ifdef WPI_DEBUG 2190 if (!async) { 2191 WPI_LOCK_ASSERT(sc); 2192 } 2193#endif 2194 2195 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2196 async)); 2197 2198 if (sc->flags & WPI_FLAG_BUSY) { 2199 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2200 __func__, code); 2201 return EAGAIN; 2202 } 2203 sc->flags|= WPI_FLAG_BUSY; 2204 2205 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2206 code, size)); 2207 2208 desc = &ring->desc[ring->cur]; 2209 cmd = &ring->cmd[ring->cur]; 2210 2211 cmd->code = code; 2212 cmd->flags = 0; 2213 cmd->qid = ring->qid; 2214 cmd->idx = ring->cur; 2215 memcpy(cmd->data, buf, size); 2216 2217 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2218 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2219 ring->cur * sizeof (struct wpi_tx_cmd)); 2220 desc->segs[0].len = htole32(4 + size); 2221 2222 /* kick cmd ring */ 2223 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2224 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2225 2226 if (async) { 2227 sc->flags &= ~ WPI_FLAG_BUSY; 2228 return 0; 2229 } 2230 2231 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2232} 2233 2234static int 2235wpi_wme_update(struct ieee80211com *ic) 2236{ 2237#define WPI_EXP2(v) htole16((1 << (v)) - 1) 2238#define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2239 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2240 const struct wmeParams *wmep; 2241 struct wpi_wme_setup wme; 2242 int ac; 2243 2244 /* don't override default WME values if WME is not actually enabled */ 2245 if (!(ic->ic_flags & IEEE80211_F_WME)) 2246 return 0; 2247 2248 wme.flags = 0; 2249 for (ac = 0; ac < WME_NUM_AC; ac++) { 2250 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2251 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2252 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2253 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2254 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2255 2256 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2257 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2258 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2259 } 2260 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2261#undef WPI_USEC 2262#undef WPI_EXP2 2263} 2264 2265/* 2266 * Configure h/w multi-rate retries. 2267 */ 2268static int 2269wpi_mrr_setup(struct wpi_softc *sc) 2270{ 2271 struct ifnet *ifp = sc->sc_ifp; 2272 struct ieee80211com *ic = ifp->if_l2com; 2273 struct wpi_mrr_setup mrr; 2274 int i, error; 2275 2276 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2277 2278 /* CCK rates (not used with 802.11a) */ 2279 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2280 mrr.rates[i].flags = 0; 2281 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2282 /* fallback to the immediate lower CCK rate (if any) */ 2283 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2284 /* try one time at this rate before falling back to "next" */ 2285 mrr.rates[i].ntries = 1; 2286 } 2287 2288 /* OFDM rates (not used with 802.11b) */ 2289 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2290 mrr.rates[i].flags = 0; 2291 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2292 /* fallback to the immediate lower OFDM rate (if any) */ 2293 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2294 mrr.rates[i].next = (i == WPI_OFDM6) ? 2295 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2296 WPI_OFDM6 : WPI_CCK2) : 2297 i - 1; 2298 /* try one time at this rate before falling back to "next" */ 2299 mrr.rates[i].ntries = 1; 2300 } 2301 2302 /* setup MRR for control frames */ 2303 mrr.which = WPI_MRR_CTL; 2304 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2305 if (error != 0) { 2306 device_printf(sc->sc_dev, 2307 "could not setup MRR for control frames\n"); 2308 return error; 2309 } 2310 2311 /* setup MRR for data frames */ 2312 mrr.which = WPI_MRR_DATA; 2313 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2314 if (error != 0) { 2315 device_printf(sc->sc_dev, 2316 "could not setup MRR for data frames\n"); 2317 return error; 2318 } 2319 2320 return 0; 2321} 2322 2323static void 2324wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2325{ 2326 struct wpi_cmd_led led; 2327 2328 led.which = which; 2329 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2330 led.off = off; 2331 led.on = on; 2332 2333 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2334} 2335 2336static void 2337wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2338{ 2339 struct wpi_cmd_tsf tsf; 2340 uint64_t val, mod; 2341 2342 memset(&tsf, 0, sizeof tsf); 2343 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2344 tsf.bintval = htole16(ni->ni_intval); 2345 tsf.lintval = htole16(10); 2346 2347 /* compute remaining time until next beacon */ 2348 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2349 mod = le64toh(tsf.tstamp) % val; 2350 tsf.binitval = htole32((uint32_t)(val - mod)); 2351 2352 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2353 device_printf(sc->sc_dev, "could not enable TSF\n"); 2354} 2355 2356#if 0 2357/* 2358 * Build a beacon frame that the firmware will broadcast periodically in 2359 * IBSS or HostAP modes. 2360 */ 2361static int 2362wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2363{ 2364 struct ifnet *ifp = sc->sc_ifp; 2365 struct ieee80211com *ic = ifp->if_l2com; 2366 struct wpi_tx_ring *ring = &sc->cmdq; 2367 struct wpi_tx_desc *desc; 2368 struct wpi_tx_data *data; 2369 struct wpi_tx_cmd *cmd; 2370 struct wpi_cmd_beacon *bcn; 2371 struct ieee80211_beacon_offsets bo; 2372 struct mbuf *m0; 2373 bus_addr_t physaddr; 2374 int error; 2375 2376 desc = &ring->desc[ring->cur]; 2377 data = &ring->data[ring->cur]; 2378 2379 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2380 if (m0 == NULL) { 2381 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2382 return ENOMEM; 2383 } 2384 2385 cmd = &ring->cmd[ring->cur]; 2386 cmd->code = WPI_CMD_SET_BEACON; 2387 cmd->flags = 0; 2388 cmd->qid = ring->qid; 2389 cmd->idx = ring->cur; 2390 2391 bcn = (struct wpi_cmd_beacon *)cmd->data; 2392 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2393 bcn->id = WPI_ID_BROADCAST; 2394 bcn->ofdm_mask = 0xff; 2395 bcn->cck_mask = 0x0f; 2396 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2397 bcn->len = htole16(m0->m_pkthdr.len); 2398 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2399 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2400 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2401 2402 /* save and trim IEEE802.11 header */ 2403 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2404 m_adj(m0, sizeof (struct ieee80211_frame)); 2405 2406 /* assume beacon frame is contiguous */ 2407 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2408 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2409 if (error != 0) { 2410 device_printf(sc->sc_dev, "could not map beacon\n"); 2411 m_freem(m0); 2412 return error; 2413 } 2414 2415 data->m = m0; 2416 2417 /* first scatter/gather segment is used by the beacon command */ 2418 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2419 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2420 ring->cur * sizeof (struct wpi_tx_cmd)); 2421 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2422 desc->segs[1].addr = htole32(physaddr); 2423 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2424 2425 /* kick cmd ring */ 2426 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2427 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2428 2429 return 0; 2430} 2431#endif 2432 2433static int 2434wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2435{ 2436 struct ieee80211com *ic = vap->iv_ic; 2437 struct ieee80211_node *ni = vap->iv_bss; 2438 struct wpi_node_info node; 2439 int error; 2440 2441 2442 /* update adapter's configuration */ 2443 sc->config.associd = 0; 2444 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2445 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2446 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2447 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2448 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2449 WPI_CONFIG_24GHZ); 2450 } else { 2451 sc->config.flags &= ~htole32(WPI_CONFIG_AUTO | 2452 WPI_CONFIG_24GHZ); 2453 } 2454 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2455 sc->config.cck_mask = 0; 2456 sc->config.ofdm_mask = 0x15; 2457 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2458 sc->config.cck_mask = 0x03; 2459 sc->config.ofdm_mask = 0; 2460 } else { 2461 /* XXX assume 802.11b/g */ 2462 sc->config.cck_mask = 0x0f; 2463 sc->config.ofdm_mask = 0x15; 2464 } 2465 2466 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2467 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2468 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2469 sizeof (struct wpi_config), 1); 2470 if (error != 0) { 2471 device_printf(sc->sc_dev, "could not configure\n"); 2472 return error; 2473 } 2474 2475 /* configuration has changed, set Tx power accordingly */ 2476 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2477 device_printf(sc->sc_dev, "could not set Tx power\n"); 2478 return error; 2479 } 2480 2481 /* add default node */ 2482 memset(&node, 0, sizeof node); 2483 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2484 node.id = WPI_ID_BSS; 2485 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2486 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2487 node.action = htole32(WPI_ACTION_SET_RATE); 2488 node.antenna = WPI_ANTENNA_BOTH; 2489 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2490 if (error != 0) 2491 device_printf(sc->sc_dev, "could not add BSS node\n"); 2492 2493 return (error); 2494} 2495 2496static int 2497wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2498{ 2499 struct ieee80211com *ic = vap->iv_ic; 2500 struct ieee80211_node *ni = vap->iv_bss; 2501 int error; 2502 2503 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2504 /* link LED blinks while monitoring */ 2505 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2506 return 0; 2507 } 2508 2509 wpi_enable_tsf(sc, ni); 2510 2511 /* update adapter's configuration */ 2512 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2513 /* short preamble/slot time are negotiated when associating */ 2514 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2515 WPI_CONFIG_SHSLOT); 2516 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2517 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2518 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2519 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2520 sc->config.filter |= htole32(WPI_FILTER_BSS); 2521 2522 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2523 2524 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2525 sc->config.flags)); 2526 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2527 wpi_config), 1); 2528 if (error != 0) { 2529 device_printf(sc->sc_dev, "could not update configuration\n"); 2530 return error; 2531 } 2532 2533 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2534 if (error != 0) { 2535 device_printf(sc->sc_dev, "could set txpower\n"); 2536 return error; 2537 } 2538 2539 /* link LED always on while associated */ 2540 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2541 2542 /* start automatic rate control timer */ 2543 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2544 2545 return (error); 2546} 2547 2548/* 2549 * Send a scan request to the firmware. Since this command is huge, we map it 2550 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2551 * much of this code is similar to that in wpi_cmd but because we must manually 2552 * construct the probe & channels, we duplicate what's needed here. XXX In the 2553 * future, this function should be modified to use wpi_cmd to help cleanup the 2554 * code base. 2555 */ 2556static int 2557wpi_scan(struct wpi_softc *sc) 2558{ 2559 struct ifnet *ifp = sc->sc_ifp; 2560 struct ieee80211com *ic = ifp->if_l2com; 2561 struct ieee80211_scan_state *ss = ic->ic_scan; 2562 struct wpi_tx_ring *ring = &sc->cmdq; 2563 struct wpi_tx_desc *desc; 2564 struct wpi_tx_data *data; 2565 struct wpi_tx_cmd *cmd; 2566 struct wpi_scan_hdr *hdr; 2567 struct wpi_scan_chan *chan; 2568 struct ieee80211_frame *wh; 2569 struct ieee80211_rateset *rs; 2570 struct ieee80211_channel *c; 2571 enum ieee80211_phymode mode; 2572 uint8_t *frm; 2573 int nrates, pktlen, error, i, nssid; 2574 bus_addr_t physaddr; 2575 2576 desc = &ring->desc[ring->cur]; 2577 data = &ring->data[ring->cur]; 2578 2579 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 2580 if (data->m == NULL) { 2581 device_printf(sc->sc_dev, 2582 "could not allocate mbuf for scan command\n"); 2583 return ENOMEM; 2584 } 2585 2586 cmd = mtod(data->m, struct wpi_tx_cmd *); 2587 cmd->code = WPI_CMD_SCAN; 2588 cmd->flags = 0; 2589 cmd->qid = ring->qid; 2590 cmd->idx = ring->cur; 2591 2592 hdr = (struct wpi_scan_hdr *)cmd->data; 2593 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2594 2595 /* 2596 * Move to the next channel if no packets are received within 5 msecs 2597 * after sending the probe request (this helps to reduce the duration 2598 * of active scans). 2599 */ 2600 hdr->quiet = htole16(5); 2601 hdr->threshold = htole16(1); 2602 2603 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2604 /* send probe requests at 6Mbps */ 2605 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2606 2607 /* Enable crc checking */ 2608 hdr->promotion = htole16(1); 2609 } else { 2610 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2611 /* send probe requests at 1Mbps */ 2612 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2613 } 2614 hdr->tx.id = WPI_ID_BROADCAST; 2615 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2616 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2617 2618 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2619 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2620 for (i = 0; i < nssid; i++) { 2621 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2622 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2623 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2624 hdr->scan_essids[i].esslen); 2625#ifdef WPI_DEBUG 2626 if (wpi_debug & WPI_DEBUG_SCANNING) { 2627 printf("Scanning Essid: "); 2628 ieee80211_print_essid(hdr->scan_essids[i].essid, 2629 hdr->scan_essids[i].esslen); 2630 printf("\n"); 2631 } 2632#endif 2633 } 2634 2635 /* 2636 * Build a probe request frame. Most of the following code is a 2637 * copy & paste of what is done in net80211. 2638 */ 2639 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2640 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2641 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2642 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2643 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2644 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2645 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2646 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2647 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2648 2649 frm = (uint8_t *)(wh + 1); 2650 2651 /* add essid IE, the hardware will fill this in for us */ 2652 *frm++ = IEEE80211_ELEMID_SSID; 2653 *frm++ = 0; 2654 2655 mode = ieee80211_chan2mode(ic->ic_curchan); 2656 rs = &ic->ic_sup_rates[mode]; 2657 2658 /* add supported rates IE */ 2659 *frm++ = IEEE80211_ELEMID_RATES; 2660 nrates = rs->rs_nrates; 2661 if (nrates > IEEE80211_RATE_SIZE) 2662 nrates = IEEE80211_RATE_SIZE; 2663 *frm++ = nrates; 2664 memcpy(frm, rs->rs_rates, nrates); 2665 frm += nrates; 2666 2667 /* add supported xrates IE */ 2668 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2669 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2670 *frm++ = IEEE80211_ELEMID_XRATES; 2671 *frm++ = nrates; 2672 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2673 frm += nrates; 2674 } 2675 2676 /* setup length of probe request */ 2677 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2678 2679 /* 2680 * Construct information about the channel that we 2681 * want to scan. The firmware expects this to be directly 2682 * after the scan probe request 2683 */ 2684 c = ic->ic_curchan; 2685 chan = (struct wpi_scan_chan *)frm; 2686 chan->chan = ieee80211_chan2ieee(ic, c); 2687 chan->flags = 0; 2688 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2689 chan->flags |= WPI_CHAN_ACTIVE; 2690 if (nssid != 0) 2691 chan->flags |= WPI_CHAN_DIRECT; 2692 } 2693 chan->gain_dsp = 0x6e; /* Default level */ 2694 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2695 chan->active = htole16(10); 2696 chan->passive = htole16(ss->ss_maxdwell); 2697 chan->gain_radio = 0x3b; 2698 } else { 2699 chan->active = htole16(20); 2700 chan->passive = htole16(ss->ss_maxdwell); 2701 chan->gain_radio = 0x28; 2702 } 2703 2704 DPRINTFN(WPI_DEBUG_SCANNING, 2705 ("Scanning %u Passive: %d\n", 2706 chan->chan, 2707 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2708 2709 hdr->nchan++; 2710 chan++; 2711 2712 frm += sizeof (struct wpi_scan_chan); 2713#if 0 2714 // XXX All Channels.... 2715 for (c = &ic->ic_channels[1]; 2716 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2717 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2718 continue; 2719 2720 chan->chan = ieee80211_chan2ieee(ic, c); 2721 chan->flags = 0; 2722 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2723 chan->flags |= WPI_CHAN_ACTIVE; 2724 if (ic->ic_des_ssid[0].len != 0) 2725 chan->flags |= WPI_CHAN_DIRECT; 2726 } 2727 chan->gain_dsp = 0x6e; /* Default level */ 2728 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2729 chan->active = htole16(10); 2730 chan->passive = htole16(110); 2731 chan->gain_radio = 0x3b; 2732 } else { 2733 chan->active = htole16(20); 2734 chan->passive = htole16(120); 2735 chan->gain_radio = 0x28; 2736 } 2737 2738 DPRINTFN(WPI_DEBUG_SCANNING, 2739 ("Scanning %u Passive: %d\n", 2740 chan->chan, 2741 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2742 2743 hdr->nchan++; 2744 chan++; 2745 2746 frm += sizeof (struct wpi_scan_chan); 2747 } 2748#endif 2749 2750 hdr->len = htole16(frm - (uint8_t *)hdr); 2751 pktlen = frm - (uint8_t *)cmd; 2752 2753 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2754 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2755 if (error != 0) { 2756 device_printf(sc->sc_dev, "could not map scan command\n"); 2757 m_freem(data->m); 2758 data->m = NULL; 2759 return error; 2760 } 2761 2762 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2763 desc->segs[0].addr = htole32(physaddr); 2764 desc->segs[0].len = htole32(pktlen); 2765 2766 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2767 BUS_DMASYNC_PREWRITE); 2768 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2769 2770 /* kick cmd ring */ 2771 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2772 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2773 2774 sc->sc_scan_timer = 5; 2775 return 0; /* will be notified async. of failure/success */ 2776} 2777 2778/** 2779 * Configure the card to listen to a particular channel, this transisions the 2780 * card in to being able to receive frames from remote devices. 2781 */ 2782static int 2783wpi_config(struct wpi_softc *sc) 2784{ 2785 struct ifnet *ifp = sc->sc_ifp; 2786 struct ieee80211com *ic = ifp->if_l2com; 2787 struct wpi_power power; 2788 struct wpi_bluetooth bluetooth; 2789 struct wpi_node_info node; 2790 int error; 2791 2792 /* set power mode */ 2793 memset(&power, 0, sizeof power); 2794 power.flags = htole32(WPI_POWER_CAM|0x8); 2795 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2796 if (error != 0) { 2797 device_printf(sc->sc_dev, "could not set power mode\n"); 2798 return error; 2799 } 2800 2801 /* configure bluetooth coexistence */ 2802 memset(&bluetooth, 0, sizeof bluetooth); 2803 bluetooth.flags = 3; 2804 bluetooth.lead = 0xaa; 2805 bluetooth.kill = 1; 2806 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2807 0); 2808 if (error != 0) { 2809 device_printf(sc->sc_dev, 2810 "could not configure bluetooth coexistence\n"); 2811 return error; 2812 } 2813 2814 /* configure adapter */ 2815 memset(&sc->config, 0, sizeof (struct wpi_config)); 2816 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2817 /*set default channel*/ 2818 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2819 sc->config.flags = htole32(WPI_CONFIG_TSF); 2820 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2821 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2822 WPI_CONFIG_24GHZ); 2823 } 2824 sc->config.filter = 0; 2825 switch (ic->ic_opmode) { 2826 case IEEE80211_M_STA: 2827 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2828 sc->config.mode = WPI_MODE_STA; 2829 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2830 break; 2831 case IEEE80211_M_IBSS: 2832 case IEEE80211_M_AHDEMO: 2833 sc->config.mode = WPI_MODE_IBSS; 2834 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2835 WPI_FILTER_MULTICAST); 2836 break; 2837 case IEEE80211_M_HOSTAP: 2838 sc->config.mode = WPI_MODE_HOSTAP; 2839 break; 2840 case IEEE80211_M_MONITOR: 2841 sc->config.mode = WPI_MODE_MONITOR; 2842 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2843 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2844 break; 2845 default: 2846 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2847 return EINVAL; 2848 } 2849 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2850 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2851 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2852 sizeof (struct wpi_config), 0); 2853 if (error != 0) { 2854 device_printf(sc->sc_dev, "configure command failed\n"); 2855 return error; 2856 } 2857 2858 /* configuration has changed, set Tx power accordingly */ 2859 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2860 device_printf(sc->sc_dev, "could not set Tx power\n"); 2861 return error; 2862 } 2863 2864 /* add broadcast node */ 2865 memset(&node, 0, sizeof node); 2866 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2867 node.id = WPI_ID_BROADCAST; 2868 node.rate = wpi_plcp_signal(2); 2869 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2870 if (error != 0) { 2871 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2872 return error; 2873 } 2874 2875 /* Setup rate scalling */ 2876 error = wpi_mrr_setup(sc); 2877 if (error != 0) { 2878 device_printf(sc->sc_dev, "could not setup MRR\n"); 2879 return error; 2880 } 2881 2882 return 0; 2883} 2884 2885static void 2886wpi_stop_master(struct wpi_softc *sc) 2887{ 2888 uint32_t tmp; 2889 int ntries; 2890 2891 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2892 2893 tmp = WPI_READ(sc, WPI_RESET); 2894 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2895 2896 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2897 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2898 return; /* already asleep */ 2899 2900 for (ntries = 0; ntries < 100; ntries++) { 2901 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2902 break; 2903 DELAY(10); 2904 } 2905 if (ntries == 100) { 2906 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2907 } 2908} 2909 2910static int 2911wpi_power_up(struct wpi_softc *sc) 2912{ 2913 uint32_t tmp; 2914 int ntries; 2915 2916 wpi_mem_lock(sc); 2917 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2918 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2919 wpi_mem_unlock(sc); 2920 2921 for (ntries = 0; ntries < 5000; ntries++) { 2922 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2923 break; 2924 DELAY(10); 2925 } 2926 if (ntries == 5000) { 2927 device_printf(sc->sc_dev, 2928 "timeout waiting for NIC to power up\n"); 2929 return ETIMEDOUT; 2930 } 2931 return 0; 2932} 2933 2934static int 2935wpi_reset(struct wpi_softc *sc) 2936{ 2937 uint32_t tmp; 2938 int ntries; 2939 2940 DPRINTFN(WPI_DEBUG_HW, 2941 ("Resetting the card - clearing any uploaded firmware\n")); 2942 2943 /* clear any pending interrupts */ 2944 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2945 2946 tmp = WPI_READ(sc, WPI_PLL_CTL); 2947 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2948 2949 tmp = WPI_READ(sc, WPI_CHICKEN); 2950 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2951 2952 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2953 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2954 2955 /* wait for clock stabilization */ 2956 for (ntries = 0; ntries < 25000; ntries++) { 2957 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2958 break; 2959 DELAY(10); 2960 } 2961 if (ntries == 25000) { 2962 device_printf(sc->sc_dev, 2963 "timeout waiting for clock stabilization\n"); 2964 return ETIMEDOUT; 2965 } 2966 2967 /* initialize EEPROM */ 2968 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2969 2970 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2971 device_printf(sc->sc_dev, "EEPROM not found\n"); 2972 return EIO; 2973 } 2974 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2975 2976 return 0; 2977} 2978 2979static void 2980wpi_hw_config(struct wpi_softc *sc) 2981{ 2982 uint32_t rev, hw; 2983 2984 /* voodoo from the Linux "driver".. */ 2985 hw = WPI_READ(sc, WPI_HWCONFIG); 2986 2987 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2988 if ((rev & 0xc0) == 0x40) 2989 hw |= WPI_HW_ALM_MB; 2990 else if (!(rev & 0x80)) 2991 hw |= WPI_HW_ALM_MM; 2992 2993 if (sc->cap == 0x80) 2994 hw |= WPI_HW_SKU_MRC; 2995 2996 hw &= ~WPI_HW_REV_D; 2997 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2998 hw |= WPI_HW_REV_D; 2999 3000 if (sc->type > 1) 3001 hw |= WPI_HW_TYPE_B; 3002 3003 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3004} 3005 3006static void 3007wpi_rfkill_resume(struct wpi_softc *sc) 3008{ 3009 struct ifnet *ifp = sc->sc_ifp; 3010 struct ieee80211com *ic = ifp->if_l2com; 3011 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3012 int ntries; 3013 3014 /* enable firmware again */ 3015 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3016 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3017 3018 /* wait for thermal sensors to calibrate */ 3019 for (ntries = 0; ntries < 1000; ntries++) { 3020 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3021 break; 3022 DELAY(10); 3023 } 3024 3025 if (ntries == 1000) { 3026 device_printf(sc->sc_dev, 3027 "timeout waiting for thermal calibration\n"); 3028 return; 3029 } 3030 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3031 3032 if (wpi_config(sc) != 0) { 3033 device_printf(sc->sc_dev, "device config failed\n"); 3034 return; 3035 } 3036 3037 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3038 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3039 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3040 3041 if (vap != NULL) { 3042 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3043 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3044 ieee80211_beacon_miss(ic); 3045 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3046 } else 3047 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3048 } else { 3049 ieee80211_scan_next(vap); 3050 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3051 } 3052 } 3053 3054 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3055} 3056 3057static void 3058wpi_init_locked(struct wpi_softc *sc, int force) 3059{ 3060 struct ifnet *ifp = sc->sc_ifp; 3061 uint32_t tmp; 3062 int ntries, qid; 3063 3064 wpi_stop_locked(sc); 3065 (void)wpi_reset(sc); 3066 3067 wpi_mem_lock(sc); 3068 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3069 DELAY(20); 3070 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3071 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3072 wpi_mem_unlock(sc); 3073 3074 (void)wpi_power_up(sc); 3075 wpi_hw_config(sc); 3076 3077 /* init Rx ring */ 3078 wpi_mem_lock(sc); 3079 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3080 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3081 offsetof(struct wpi_shared, next)); 3082 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3083 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3084 wpi_mem_unlock(sc); 3085 3086 /* init Tx rings */ 3087 wpi_mem_lock(sc); 3088 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3089 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3090 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3091 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3092 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3093 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3094 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3095 3096 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3097 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3098 3099 for (qid = 0; qid < 6; qid++) { 3100 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3101 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3102 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3103 } 3104 wpi_mem_unlock(sc); 3105 3106 /* clear "radio off" and "disable command" bits (reversed logic) */ 3107 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3108 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3109 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3110 3111 /* clear any pending interrupts */ 3112 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3113 3114 /* enable interrupts */ 3115 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3116 3117 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3118 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3119 3120 if ((wpi_load_firmware(sc)) != 0) { 3121 device_printf(sc->sc_dev, 3122 "A problem occurred loading the firmware to the driver\n"); 3123 return; 3124 } 3125 3126 /* At this point the firmware is up and running. If the hardware 3127 * RF switch is turned off thermal calibration will fail, though 3128 * the card is still happy to continue to accept commands, catch 3129 * this case and schedule a task to watch for it to be turned on. 3130 */ 3131 wpi_mem_lock(sc); 3132 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3133 wpi_mem_unlock(sc); 3134 3135 if (!(tmp & 0x1)) { 3136 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3137 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3138 goto out; 3139 } 3140 3141 /* wait for thermal sensors to calibrate */ 3142 for (ntries = 0; ntries < 1000; ntries++) { 3143 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3144 break; 3145 DELAY(10); 3146 } 3147 3148 if (ntries == 1000) { 3149 device_printf(sc->sc_dev, 3150 "timeout waiting for thermal sensors calibration\n"); 3151 return; 3152 } 3153 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3154 3155 if (wpi_config(sc) != 0) { 3156 device_printf(sc->sc_dev, "device config failed\n"); 3157 return; 3158 } 3159 3160 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3161 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3162out: 3163 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3164} 3165 3166static void 3167wpi_init(void *arg) 3168{ 3169 struct wpi_softc *sc = arg; 3170 struct ifnet *ifp = sc->sc_ifp; 3171 struct ieee80211com *ic = ifp->if_l2com; 3172 3173 WPI_LOCK(sc); 3174 wpi_init_locked(sc, 0); 3175 WPI_UNLOCK(sc); 3176 3177 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3178 ieee80211_start_all(ic); /* start all vaps */ 3179} 3180 3181static void 3182wpi_stop_locked(struct wpi_softc *sc) 3183{ 3184 struct ifnet *ifp = sc->sc_ifp; 3185 uint32_t tmp; 3186 int ac; 3187 3188 sc->sc_tx_timer = 0; 3189 sc->sc_scan_timer = 0; 3190 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3191 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3192 callout_stop(&sc->watchdog_to); 3193 callout_stop(&sc->calib_to); 3194 3195 3196 /* disable interrupts */ 3197 WPI_WRITE(sc, WPI_MASK, 0); 3198 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3199 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3200 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3201 3202 wpi_mem_lock(sc); 3203 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3204 wpi_mem_unlock(sc); 3205 3206 /* reset all Tx rings */ 3207 for (ac = 0; ac < 4; ac++) 3208 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3209 wpi_reset_tx_ring(sc, &sc->cmdq); 3210 3211 /* reset Rx ring */ 3212 wpi_reset_rx_ring(sc, &sc->rxq); 3213 3214 wpi_mem_lock(sc); 3215 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3216 wpi_mem_unlock(sc); 3217 3218 DELAY(5); 3219 3220 wpi_stop_master(sc); 3221 3222 tmp = WPI_READ(sc, WPI_RESET); 3223 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3224 sc->flags &= ~WPI_FLAG_BUSY; 3225} 3226 3227static void 3228wpi_stop(struct wpi_softc *sc) 3229{ 3230 WPI_LOCK(sc); 3231 wpi_stop_locked(sc); 3232 WPI_UNLOCK(sc); 3233} 3234 3235static void 3236wpi_calib_timeout(void *arg) 3237{ 3238 struct wpi_softc *sc = arg; 3239 struct ifnet *ifp = sc->sc_ifp; 3240 struct ieee80211com *ic = ifp->if_l2com; 3241 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3242 int temp; 3243 3244 if (vap->iv_state != IEEE80211_S_RUN) 3245 return; 3246 3247 /* update sensor data */ 3248 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3249 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3250 3251 wpi_power_calibration(sc, temp); 3252 3253 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3254} 3255 3256/* 3257 * This function is called periodically (every 60 seconds) to adjust output 3258 * power to temperature changes. 3259 */ 3260static void 3261wpi_power_calibration(struct wpi_softc *sc, int temp) 3262{ 3263 struct ifnet *ifp = sc->sc_ifp; 3264 struct ieee80211com *ic = ifp->if_l2com; 3265 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3266 3267 /* sanity-check read value */ 3268 if (temp < -260 || temp > 25) { 3269 /* this can't be correct, ignore */ 3270 DPRINTFN(WPI_DEBUG_TEMP, 3271 ("out-of-range temperature reported: %d\n", temp)); 3272 return; 3273 } 3274 3275 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3276 3277 /* adjust Tx power if need be */ 3278 if (abs(temp - sc->temp) <= 6) 3279 return; 3280 3281 sc->temp = temp; 3282 3283 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3284 /* just warn, too bad for the automatic calibration... */ 3285 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3286 } 3287} 3288 3289/** 3290 * Read the eeprom to find out what channels are valid for the given 3291 * band and update net80211 with what we find. 3292 */ 3293static void 3294wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3295{ 3296 struct ifnet *ifp = sc->sc_ifp; 3297 struct ieee80211com *ic = ifp->if_l2com; 3298 const struct wpi_chan_band *band = &wpi_bands[n]; 3299 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3300 struct ieee80211_channel *c; 3301 int chan, i, passive; 3302 3303 wpi_read_prom_data(sc, band->addr, channels, 3304 band->nchan * sizeof (struct wpi_eeprom_chan)); 3305 3306 for (i = 0; i < band->nchan; i++) { 3307 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3308 DPRINTFN(WPI_DEBUG_HW, 3309 ("Channel Not Valid: %d, band %d\n", 3310 band->chan[i],n)); 3311 continue; 3312 } 3313 3314 passive = 0; 3315 chan = band->chan[i]; 3316 c = &ic->ic_channels[ic->ic_nchans++]; 3317 3318 /* is active scan allowed on this channel? */ 3319 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3320 passive = IEEE80211_CHAN_PASSIVE; 3321 } 3322 3323 if (n == 0) { /* 2GHz band */ 3324 c->ic_ieee = chan; 3325 c->ic_freq = ieee80211_ieee2mhz(chan, 3326 IEEE80211_CHAN_2GHZ); 3327 c->ic_flags = IEEE80211_CHAN_B | passive; 3328 3329 c = &ic->ic_channels[ic->ic_nchans++]; 3330 c->ic_ieee = chan; 3331 c->ic_freq = ieee80211_ieee2mhz(chan, 3332 IEEE80211_CHAN_2GHZ); 3333 c->ic_flags = IEEE80211_CHAN_G | passive; 3334 3335 } else { /* 5GHz band */ 3336 /* 3337 * Some 3945ABG adapters support channels 7, 8, 11 3338 * and 12 in the 2GHz *and* 5GHz bands. 3339 * Because of limitations in our net80211(9) stack, 3340 * we can't support these channels in 5GHz band. 3341 * XXX not true; just need to map to proper frequency 3342 */ 3343 if (chan <= 14) 3344 continue; 3345 3346 c->ic_ieee = chan; 3347 c->ic_freq = ieee80211_ieee2mhz(chan, 3348 IEEE80211_CHAN_5GHZ); 3349 c->ic_flags = IEEE80211_CHAN_A | passive; 3350 } 3351 3352 /* save maximum allowed power for this channel */ 3353 sc->maxpwr[chan] = channels[i].maxpwr; 3354 3355#if 0 3356 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3357 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3358 //ic->ic_channels[chan].ic_minpower... 3359 //ic->ic_channels[chan].ic_maxregtxpower... 3360#endif 3361 3362 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3363 " passive=%d, offset %d\n", chan, c->ic_freq, 3364 channels[i].flags, sc->maxpwr[chan], 3365 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3366 ic->ic_nchans)); 3367 } 3368} 3369 3370static void 3371wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3372{ 3373 struct wpi_power_group *group = &sc->groups[n]; 3374 struct wpi_eeprom_group rgroup; 3375 int i; 3376 3377 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3378 sizeof rgroup); 3379 3380 /* save power group information */ 3381 group->chan = rgroup.chan; 3382 group->maxpwr = rgroup.maxpwr; 3383 /* temperature at which the samples were taken */ 3384 group->temp = (int16_t)le16toh(rgroup.temp); 3385 3386 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3387 group->chan, group->maxpwr, group->temp)); 3388 3389 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3390 group->samples[i].index = rgroup.samples[i].index; 3391 group->samples[i].power = rgroup.samples[i].power; 3392 3393 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3394 group->samples[i].index, group->samples[i].power)); 3395 } 3396} 3397 3398/* 3399 * Update Tx power to match what is defined for channel `c'. 3400 */ 3401static int 3402wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3403{ 3404 struct ifnet *ifp = sc->sc_ifp; 3405 struct ieee80211com *ic = ifp->if_l2com; 3406 struct wpi_power_group *group; 3407 struct wpi_cmd_txpower txpower; 3408 u_int chan; 3409 int i; 3410 3411 /* get channel number */ 3412 chan = ieee80211_chan2ieee(ic, c); 3413 3414 /* find the power group to which this channel belongs */ 3415 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3416 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3417 if (chan <= group->chan) 3418 break; 3419 } else 3420 group = &sc->groups[0]; 3421 3422 memset(&txpower, 0, sizeof txpower); 3423 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3424 txpower.channel = htole16(chan); 3425 3426 /* set Tx power for all OFDM and CCK rates */ 3427 for (i = 0; i <= 11 ; i++) { 3428 /* retrieve Tx power for this channel/rate combination */ 3429 int idx = wpi_get_power_index(sc, group, c, 3430 wpi_ridx_to_rate[i]); 3431 3432 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3433 3434 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3435 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3436 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3437 } else { 3438 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3439 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3440 } 3441 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3442 chan, wpi_ridx_to_rate[i], idx)); 3443 } 3444 3445 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3446} 3447 3448/* 3449 * Determine Tx power index for a given channel/rate combination. 3450 * This takes into account the regulatory information from EEPROM and the 3451 * current temperature. 3452 */ 3453static int 3454wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3455 struct ieee80211_channel *c, int rate) 3456{ 3457/* fixed-point arithmetic division using a n-bit fractional part */ 3458#define fdivround(a, b, n) \ 3459 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3460 3461/* linear interpolation */ 3462#define interpolate(x, x1, y1, x2, y2, n) \ 3463 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3464 3465 struct ifnet *ifp = sc->sc_ifp; 3466 struct ieee80211com *ic = ifp->if_l2com; 3467 struct wpi_power_sample *sample; 3468 int pwr, idx; 3469 u_int chan; 3470 3471 /* get channel number */ 3472 chan = ieee80211_chan2ieee(ic, c); 3473 3474 /* default power is group's maximum power - 3dB */ 3475 pwr = group->maxpwr / 2; 3476 3477 /* decrease power for highest OFDM rates to reduce distortion */ 3478 switch (rate) { 3479 case 72: /* 36Mb/s */ 3480 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3481 break; 3482 case 96: /* 48Mb/s */ 3483 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3484 break; 3485 case 108: /* 54Mb/s */ 3486 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3487 break; 3488 } 3489 3490 /* never exceed channel's maximum allowed Tx power */ 3491 pwr = min(pwr, sc->maxpwr[chan]); 3492 3493 /* retrieve power index into gain tables from samples */ 3494 for (sample = group->samples; sample < &group->samples[3]; sample++) 3495 if (pwr > sample[1].power) 3496 break; 3497 /* fixed-point linear interpolation using a 19-bit fractional part */ 3498 idx = interpolate(pwr, sample[0].power, sample[0].index, 3499 sample[1].power, sample[1].index, 19); 3500 3501 /* 3502 * Adjust power index based on current temperature 3503 * - if colder than factory-calibrated: decreate output power 3504 * - if warmer than factory-calibrated: increase output power 3505 */ 3506 idx -= (sc->temp - group->temp) * 11 / 100; 3507 3508 /* decrease power for CCK rates (-5dB) */ 3509 if (!WPI_RATE_IS_OFDM(rate)) 3510 idx += 10; 3511 3512 /* keep power index in a valid range */ 3513 if (idx < 0) 3514 return 0; 3515 if (idx > WPI_MAX_PWR_INDEX) 3516 return WPI_MAX_PWR_INDEX; 3517 return idx; 3518 3519#undef interpolate 3520#undef fdivround 3521} 3522 3523/** 3524 * Called by net80211 framework to indicate that a scan 3525 * is starting. This function doesn't actually do the scan, 3526 * wpi_scan_curchan starts things off. This function is more 3527 * of an early warning from the framework we should get ready 3528 * for the scan. 3529 */ 3530static void 3531wpi_scan_start(struct ieee80211com *ic) 3532{ 3533 struct ifnet *ifp = ic->ic_ifp; 3534 struct wpi_softc *sc = ifp->if_softc; 3535 3536 WPI_LOCK(sc); 3537 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3538 WPI_UNLOCK(sc); 3539} 3540 3541/** 3542 * Called by the net80211 framework, indicates that the 3543 * scan has ended. If there is a scan in progress on the card 3544 * then it should be aborted. 3545 */ 3546static void 3547wpi_scan_end(struct ieee80211com *ic) 3548{ 3549 /* XXX ignore */ 3550} 3551 3552/** 3553 * Called by the net80211 framework to indicate to the driver 3554 * that the channel should be changed 3555 */ 3556static void 3557wpi_set_channel(struct ieee80211com *ic) 3558{ 3559 struct ifnet *ifp = ic->ic_ifp; 3560 struct wpi_softc *sc = ifp->if_softc; 3561 int error; 3562 3563 /* 3564 * Only need to set the channel in Monitor mode. AP scanning and auth 3565 * are already taken care of by their respective firmware commands. 3566 */ 3567 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3568 WPI_LOCK(sc); 3569 error = wpi_config(sc); 3570 WPI_UNLOCK(sc); 3571 if (error != 0) 3572 device_printf(sc->sc_dev, 3573 "error %d settting channel\n", error); 3574 } 3575} 3576 3577/** 3578 * Called by net80211 to indicate that we need to scan the current 3579 * channel. The channel is previously be set via the wpi_set_channel 3580 * callback. 3581 */ 3582static void 3583wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3584{ 3585 struct ieee80211vap *vap = ss->ss_vap; 3586 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3587 struct wpi_softc *sc = ifp->if_softc; 3588 3589 WPI_LOCK(sc); 3590 if (wpi_scan(sc)) 3591 ieee80211_cancel_scan(vap); 3592 WPI_UNLOCK(sc); 3593} 3594 3595/** 3596 * Called by the net80211 framework to indicate 3597 * the minimum dwell time has been met, terminate the scan. 3598 * We don't actually terminate the scan as the firmware will notify 3599 * us when it's finished and we have no way to interrupt it. 3600 */ 3601static void 3602wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3603{ 3604 /* NB: don't try to abort scan; wait for firmware to finish */ 3605} 3606 3607static void 3608wpi_hwreset(void *arg, int pending) 3609{ 3610 struct wpi_softc *sc = arg; 3611 3612 WPI_LOCK(sc); 3613 wpi_init_locked(sc, 0); 3614 WPI_UNLOCK(sc); 3615} 3616 3617static void 3618wpi_rfreset(void *arg, int pending) 3619{ 3620 struct wpi_softc *sc = arg; 3621 3622 WPI_LOCK(sc); 3623 wpi_rfkill_resume(sc); 3624 WPI_UNLOCK(sc); 3625} 3626 3627/* 3628 * Allocate DMA-safe memory for firmware transfer. 3629 */ 3630static int 3631wpi_alloc_fwmem(struct wpi_softc *sc) 3632{ 3633 /* allocate enough contiguous space to store text and data */ 3634 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3635 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3636 BUS_DMA_NOWAIT); 3637} 3638 3639static void 3640wpi_free_fwmem(struct wpi_softc *sc) 3641{ 3642 wpi_dma_contig_free(&sc->fw_dma); 3643} 3644 3645/** 3646 * Called every second, wpi_watchdog used by the watch dog timer 3647 * to check that the card is still alive 3648 */ 3649static void 3650wpi_watchdog(void *arg) 3651{ 3652 struct wpi_softc *sc = arg; 3653 struct ifnet *ifp = sc->sc_ifp; 3654 struct ieee80211com *ic = ifp->if_l2com; 3655 uint32_t tmp; 3656 3657 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3658 3659 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3660 /* No need to lock firmware memory */ 3661 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3662 3663 if ((tmp & 0x1) == 0) { 3664 /* Radio kill switch is still off */ 3665 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3666 return; 3667 } 3668 3669 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3670 ieee80211_runtask(ic, &sc->sc_radiotask); 3671 return; 3672 } 3673 3674 if (sc->sc_tx_timer > 0) { 3675 if (--sc->sc_tx_timer == 0) { 3676 device_printf(sc->sc_dev,"device timeout\n"); 3677 ifp->if_oerrors++; 3678 ieee80211_runtask(ic, &sc->sc_restarttask); 3679 } 3680 } 3681 if (sc->sc_scan_timer > 0) { 3682 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3683 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3684 device_printf(sc->sc_dev,"scan timeout\n"); 3685 ieee80211_cancel_scan(vap); 3686 ieee80211_runtask(ic, &sc->sc_restarttask); 3687 } 3688 } 3689 3690 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3691 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3692} 3693 3694#ifdef WPI_DEBUG 3695static const char *wpi_cmd_str(int cmd) 3696{ 3697 switch (cmd) { 3698 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3699 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3700 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3701 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3702 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3703 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3704 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3705 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3706 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3707 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3708 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3709 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3710 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3711 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3712 3713 default: 3714 KASSERT(1, ("Unknown Command: %d\n", cmd)); 3715 return "UNKNOWN CMD"; /* Make the compiler happy */ 3716 } 3717} 3718#endif 3719 3720MODULE_DEPEND(wpi, pci, 1, 1, 1); 3721MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3722MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3723