if_wpi.c revision 195562
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 195562 2009-07-10 15:28:33Z rpaulo $"); 23 24/* 25 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 26 * 27 * The 3945ABG network adapter doesn't use traditional hardware as 28 * many other adaptors do. Instead at run time the eeprom is set into a known 29 * state and told to load boot firmware. The boot firmware loads an init and a 30 * main binary firmware image into SRAM on the card via DMA. 31 * Once the firmware is loaded, the driver/hw then 32 * communicate by way of circular dma rings via the the SRAM to the firmware. 33 * 34 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 35 * The 4 tx data rings allow for prioritization QoS. 36 * 37 * The rx data ring consists of 32 dma buffers. Two registers are used to 38 * indicate where in the ring the driver and the firmware are up to. The 39 * driver sets the initial read index (reg1) and the initial write index (reg2), 40 * the firmware updates the read index (reg1) on rx of a packet and fires an 41 * interrupt. The driver then processes the buffers starting at reg1 indicating 42 * to the firmware which buffers have been accessed by updating reg2. At the 43 * same time allocating new memory for the processed buffer. 44 * 45 * A similar thing happens with the tx rings. The difference is the firmware 46 * stop processing buffers once the queue is full and until confirmation 47 * of a successful transmition (tx_intr) has occurred. 48 * 49 * The command ring operates in the same manner as the tx queues. 50 * 51 * All communication direct to the card (ie eeprom) is classed as Stage1 52 * communication 53 * 54 * All communication via the firmware to the card is classed as State2. 55 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 56 * firmware. The bootstrap firmware and runtime firmware are loaded 57 * from host memory via dma to the card then told to execute. From this point 58 * on the majority of communications between the driver and the card goes 59 * via the firmware. 60 */ 61 62#include <sys/param.h> 63#include <sys/sysctl.h> 64#include <sys/sockio.h> 65#include <sys/mbuf.h> 66#include <sys/kernel.h> 67#include <sys/socket.h> 68#include <sys/systm.h> 69#include <sys/malloc.h> 70#include <sys/queue.h> 71#include <sys/taskqueue.h> 72#include <sys/module.h> 73#include <sys/bus.h> 74#include <sys/endian.h> 75#include <sys/linker.h> 76#include <sys/firmware.h> 77 78#include <machine/bus.h> 79#include <machine/resource.h> 80#include <sys/rman.h> 81 82#include <dev/pci/pcireg.h> 83#include <dev/pci/pcivar.h> 84 85#include <net/bpf.h> 86#include <net/if.h> 87#include <net/if_arp.h> 88#include <net/ethernet.h> 89#include <net/if_dl.h> 90#include <net/if_media.h> 91#include <net/if_types.h> 92 93#include <net80211/ieee80211_var.h> 94#include <net80211/ieee80211_radiotap.h> 95#include <net80211/ieee80211_regdomain.h> 96 97#include <netinet/in.h> 98#include <netinet/in_systm.h> 99#include <netinet/in_var.h> 100#include <netinet/ip.h> 101#include <netinet/if_ether.h> 102 103#include <dev/wpi/if_wpireg.h> 104#include <dev/wpi/if_wpivar.h> 105 106#define WPI_DEBUG 107 108#ifdef WPI_DEBUG 109#define DPRINTF(x) do { if (wpi_debug != 0) printf x; } while (0) 110#define DPRINTFN(n, x) do { if (wpi_debug & n) printf x; } while (0) 111#define WPI_DEBUG_SET (wpi_debug != 0) 112 113enum { 114 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ 115 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ 116 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ 117 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ 118 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ 119 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ 120 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ 121 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ 122 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ 123 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ 124 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ 125 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ 126 WPI_DEBUG_ANY = 0xffffffff 127}; 128 129static int wpi_debug = 1; 130SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level"); 131TUNABLE_INT("debug.wpi", &wpi_debug); 132 133#else 134#define DPRINTF(x) 135#define DPRINTFN(n, x) 136#define WPI_DEBUG_SET 0 137#endif 138 139struct wpi_ident { 140 uint16_t vendor; 141 uint16_t device; 142 uint16_t subdevice; 143 const char *name; 144}; 145 146static const struct wpi_ident wpi_ident_table[] = { 147 /* The below entries support ABG regardless of the subid */ 148 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 149 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 150 /* The below entries only support BG */ 151 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 152 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 153 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 154 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 155 { 0, 0, 0, NULL } 156}; 157 158static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 159 const char name[IFNAMSIZ], int unit, int opmode, 160 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 161 const uint8_t mac[IEEE80211_ADDR_LEN]); 162static void wpi_vap_delete(struct ieee80211vap *); 163static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 164 void **, bus_size_t, bus_size_t, int); 165static void wpi_dma_contig_free(struct wpi_dma_info *); 166static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 167static int wpi_alloc_shared(struct wpi_softc *); 168static void wpi_free_shared(struct wpi_softc *); 169static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 170static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 171static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 172static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 173 int, int); 174static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 175static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 176static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 177 const uint8_t mac[IEEE80211_ADDR_LEN]); 178static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 179static void wpi_mem_lock(struct wpi_softc *); 180static void wpi_mem_unlock(struct wpi_softc *); 181static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 182static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 183static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 184 const uint32_t *, int); 185static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 186static int wpi_alloc_fwmem(struct wpi_softc *); 187static void wpi_free_fwmem(struct wpi_softc *); 188static int wpi_load_firmware(struct wpi_softc *); 189static void wpi_unload_firmware(struct wpi_softc *); 190static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 191static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 192 struct wpi_rx_data *); 193static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 194static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 195static void wpi_notif_intr(struct wpi_softc *); 196static void wpi_intr(void *); 197static uint8_t wpi_plcp_signal(int); 198static void wpi_watchdog(void *); 199static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 200 struct ieee80211_node *, int); 201static void wpi_start(struct ifnet *); 202static void wpi_start_locked(struct ifnet *); 203static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 204 const struct ieee80211_bpf_params *); 205static void wpi_scan_start(struct ieee80211com *); 206static void wpi_scan_end(struct ieee80211com *); 207static void wpi_set_channel(struct ieee80211com *); 208static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 209static void wpi_scan_mindwell(struct ieee80211_scan_state *); 210static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 211static void wpi_read_eeprom(struct wpi_softc *, 212 uint8_t macaddr[IEEE80211_ADDR_LEN]); 213static void wpi_read_eeprom_channels(struct wpi_softc *, int); 214static void wpi_read_eeprom_group(struct wpi_softc *, int); 215static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 216static int wpi_wme_update(struct ieee80211com *); 217static int wpi_mrr_setup(struct wpi_softc *); 218static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 219static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 220#if 0 221static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 222#endif 223static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 224static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 225static int wpi_scan(struct wpi_softc *); 226static int wpi_config(struct wpi_softc *); 227static void wpi_stop_master(struct wpi_softc *); 228static int wpi_power_up(struct wpi_softc *); 229static int wpi_reset(struct wpi_softc *); 230static void wpi_hwreset(void *, int); 231static void wpi_rfreset(void *, int); 232static void wpi_hw_config(struct wpi_softc *); 233static void wpi_init(void *); 234static void wpi_init_locked(struct wpi_softc *, int); 235static void wpi_stop(struct wpi_softc *); 236static void wpi_stop_locked(struct wpi_softc *); 237 238static void wpi_newassoc(struct ieee80211_node *, int); 239static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 240 int); 241static void wpi_calib_timeout(void *); 242static void wpi_power_calibration(struct wpi_softc *, int); 243static int wpi_get_power_index(struct wpi_softc *, 244 struct wpi_power_group *, struct ieee80211_channel *, int); 245#ifdef WPI_DEBUG 246static const char *wpi_cmd_str(int); 247#endif 248static int wpi_probe(device_t); 249static int wpi_attach(device_t); 250static int wpi_detach(device_t); 251static int wpi_shutdown(device_t); 252static int wpi_suspend(device_t); 253static int wpi_resume(device_t); 254 255 256static device_method_t wpi_methods[] = { 257 /* Device interface */ 258 DEVMETHOD(device_probe, wpi_probe), 259 DEVMETHOD(device_attach, wpi_attach), 260 DEVMETHOD(device_detach, wpi_detach), 261 DEVMETHOD(device_shutdown, wpi_shutdown), 262 DEVMETHOD(device_suspend, wpi_suspend), 263 DEVMETHOD(device_resume, wpi_resume), 264 265 { 0, 0 } 266}; 267 268static driver_t wpi_driver = { 269 "wpi", 270 wpi_methods, 271 sizeof (struct wpi_softc) 272}; 273 274static devclass_t wpi_devclass; 275 276DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0); 277 278static const uint8_t wpi_ridx_to_plcp[] = { 279 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 280 /* R1-R4 (ral/ural is R4-R1) */ 281 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 282 /* CCK: device-dependent */ 283 10, 20, 55, 110 284}; 285static const uint8_t wpi_ridx_to_rate[] = { 286 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 287 2, 4, 11, 22 /*CCK */ 288}; 289 290 291static int 292wpi_probe(device_t dev) 293{ 294 const struct wpi_ident *ident; 295 296 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 297 if (pci_get_vendor(dev) == ident->vendor && 298 pci_get_device(dev) == ident->device) { 299 device_set_desc(dev, ident->name); 300 return 0; 301 } 302 } 303 return ENXIO; 304} 305 306/** 307 * Load the firmare image from disk to the allocated dma buffer. 308 * we also maintain the reference to the firmware pointer as there 309 * is times where we may need to reload the firmware but we are not 310 * in a context that can access the filesystem (ie taskq cause by restart) 311 * 312 * @return 0 on success, an errno on failure 313 */ 314static int 315wpi_load_firmware(struct wpi_softc *sc) 316{ 317 const struct firmware *fp; 318 struct wpi_dma_info *dma = &sc->fw_dma; 319 const struct wpi_firmware_hdr *hdr; 320 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 321 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 322 int error; 323 324 DPRINTFN(WPI_DEBUG_FIRMWARE, 325 ("Attempting Loading Firmware from wpi_fw module\n")); 326 327 WPI_UNLOCK(sc); 328 329 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 330 device_printf(sc->sc_dev, 331 "could not load firmware image 'wpifw'\n"); 332 error = ENOENT; 333 WPI_LOCK(sc); 334 goto fail; 335 } 336 337 fp = sc->fw_fp; 338 339 WPI_LOCK(sc); 340 341 /* Validate the firmware is minimum a particular version */ 342 if (fp->version < WPI_FW_MINVERSION) { 343 device_printf(sc->sc_dev, 344 "firmware version is too old. Need %d, got %d\n", 345 WPI_FW_MINVERSION, 346 fp->version); 347 error = ENXIO; 348 goto fail; 349 } 350 351 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 352 device_printf(sc->sc_dev, 353 "firmware file too short: %zu bytes\n", fp->datasize); 354 error = ENXIO; 355 goto fail; 356 } 357 358 hdr = (const struct wpi_firmware_hdr *)fp->data; 359 360 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 361 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 362 363 rtextsz = le32toh(hdr->rtextsz); 364 rdatasz = le32toh(hdr->rdatasz); 365 itextsz = le32toh(hdr->itextsz); 366 idatasz = le32toh(hdr->idatasz); 367 btextsz = le32toh(hdr->btextsz); 368 369 /* check that all firmware segments are present */ 370 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 371 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 372 device_printf(sc->sc_dev, 373 "firmware file too short: %zu bytes\n", fp->datasize); 374 error = ENXIO; /* XXX appropriate error code? */ 375 goto fail; 376 } 377 378 /* get pointers to firmware segments */ 379 rtext = (const uint8_t *)(hdr + 1); 380 rdata = rtext + rtextsz; 381 itext = rdata + rdatasz; 382 idata = itext + itextsz; 383 btext = idata + idatasz; 384 385 DPRINTFN(WPI_DEBUG_FIRMWARE, 386 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 387 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 388 (le32toh(hdr->version) & 0xff000000) >> 24, 389 (le32toh(hdr->version) & 0x00ff0000) >> 16, 390 (le32toh(hdr->version) & 0x0000ffff), 391 rtextsz, rdatasz, 392 itextsz, idatasz, btextsz)); 393 394 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 395 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 396 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 397 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 398 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 399 400 /* sanity checks */ 401 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 402 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 403 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 404 idatasz > WPI_FW_INIT_DATA_MAXSZ || 405 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 406 (btextsz & 3) != 0) { 407 device_printf(sc->sc_dev, "firmware invalid\n"); 408 error = EINVAL; 409 goto fail; 410 } 411 412 /* copy initialization images into pre-allocated DMA-safe memory */ 413 memcpy(dma->vaddr, idata, idatasz); 414 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 415 416 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 417 418 /* tell adapter where to find initialization images */ 419 wpi_mem_lock(sc); 420 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 421 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 422 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 423 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 424 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 425 wpi_mem_unlock(sc); 426 427 /* load firmware boot code */ 428 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 429 device_printf(sc->sc_dev, "Failed to load microcode\n"); 430 goto fail; 431 } 432 433 /* now press "execute" */ 434 WPI_WRITE(sc, WPI_RESET, 0); 435 436 /* wait at most one second for the first alive notification */ 437 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 438 device_printf(sc->sc_dev, 439 "timeout waiting for adapter to initialize\n"); 440 goto fail; 441 } 442 443 /* copy runtime images into pre-allocated DMA-sage memory */ 444 memcpy(dma->vaddr, rdata, rdatasz); 445 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 446 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 447 448 /* tell adapter where to find runtime images */ 449 wpi_mem_lock(sc); 450 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 451 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 452 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 453 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 454 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 455 wpi_mem_unlock(sc); 456 457 /* wait at most one second for the first alive notification */ 458 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 459 device_printf(sc->sc_dev, 460 "timeout waiting for adapter to initialize2\n"); 461 goto fail; 462 } 463 464 DPRINTFN(WPI_DEBUG_FIRMWARE, 465 ("Firmware loaded to driver successfully\n")); 466 return error; 467fail: 468 wpi_unload_firmware(sc); 469 return error; 470} 471 472/** 473 * Free the referenced firmware image 474 */ 475static void 476wpi_unload_firmware(struct wpi_softc *sc) 477{ 478 479 if (sc->fw_fp) { 480 WPI_UNLOCK(sc); 481 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 482 WPI_LOCK(sc); 483 sc->fw_fp = NULL; 484 } 485} 486 487static int 488wpi_attach(device_t dev) 489{ 490 struct wpi_softc *sc = device_get_softc(dev); 491 struct ifnet *ifp; 492 struct ieee80211com *ic; 493 int ac, error, supportsa = 1; 494 uint32_t tmp; 495 const struct wpi_ident *ident; 496 uint8_t macaddr[IEEE80211_ADDR_LEN]; 497 498 sc->sc_dev = dev; 499 500 if (bootverbose || WPI_DEBUG_SET) 501 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 502 503 /* 504 * Some card's only support 802.11b/g not a, check to see if 505 * this is one such card. A 0x0 in the subdevice table indicates 506 * the entire subdevice range is to be ignored. 507 */ 508 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 509 if (ident->subdevice && 510 pci_get_subdevice(dev) == ident->subdevice) { 511 supportsa = 0; 512 break; 513 } 514 } 515 516 /* Create the tasks that can be queued */ 517 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc); 518 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc); 519 520 WPI_LOCK_INIT(sc); 521 522 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 523 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 524 525 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 526 device_printf(dev, "chip is in D%d power mode " 527 "-- setting to D0\n", pci_get_powerstate(dev)); 528 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 529 } 530 531 /* disable the retry timeout register */ 532 pci_write_config(dev, 0x41, 0, 1); 533 534 /* enable bus-mastering */ 535 pci_enable_busmaster(dev); 536 537 sc->mem_rid = PCIR_BAR(0); 538 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 539 RF_ACTIVE); 540 if (sc->mem == NULL) { 541 device_printf(dev, "could not allocate memory resource\n"); 542 error = ENOMEM; 543 goto fail; 544 } 545 546 sc->sc_st = rman_get_bustag(sc->mem); 547 sc->sc_sh = rman_get_bushandle(sc->mem); 548 549 sc->irq_rid = 0; 550 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 551 RF_ACTIVE | RF_SHAREABLE); 552 if (sc->irq == NULL) { 553 device_printf(dev, "could not allocate interrupt resource\n"); 554 error = ENOMEM; 555 goto fail; 556 } 557 558 /* 559 * Allocate DMA memory for firmware transfers. 560 */ 561 if ((error = wpi_alloc_fwmem(sc)) != 0) { 562 printf(": could not allocate firmware memory\n"); 563 error = ENOMEM; 564 goto fail; 565 } 566 567 /* 568 * Put adapter into a known state. 569 */ 570 if ((error = wpi_reset(sc)) != 0) { 571 device_printf(dev, "could not reset adapter\n"); 572 goto fail; 573 } 574 575 wpi_mem_lock(sc); 576 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 577 if (bootverbose || WPI_DEBUG_SET) 578 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 579 580 wpi_mem_unlock(sc); 581 582 /* Allocate shared page */ 583 if ((error = wpi_alloc_shared(sc)) != 0) { 584 device_printf(dev, "could not allocate shared page\n"); 585 goto fail; 586 } 587 588 /* tx data queues - 4 for QoS purposes */ 589 for (ac = 0; ac < WME_NUM_AC; ac++) { 590 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 591 if (error != 0) { 592 device_printf(dev, "could not allocate Tx ring %d\n",ac); 593 goto fail; 594 } 595 } 596 597 /* command queue to talk to the card's firmware */ 598 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 599 if (error != 0) { 600 device_printf(dev, "could not allocate command ring\n"); 601 goto fail; 602 } 603 604 /* receive data queue */ 605 error = wpi_alloc_rx_ring(sc, &sc->rxq); 606 if (error != 0) { 607 device_printf(dev, "could not allocate Rx ring\n"); 608 goto fail; 609 } 610 611 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 612 if (ifp == NULL) { 613 device_printf(dev, "can not if_alloc()\n"); 614 error = ENOMEM; 615 goto fail; 616 } 617 ic = ifp->if_l2com; 618 619 ic->ic_ifp = ifp; 620 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 621 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 622 623 /* set device capabilities */ 624 ic->ic_caps = 625 IEEE80211_C_STA /* station mode supported */ 626 | IEEE80211_C_MONITOR /* monitor mode supported */ 627 | IEEE80211_C_TXPMGT /* tx power management */ 628 | IEEE80211_C_SHSLOT /* short slot time supported */ 629 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 630 | IEEE80211_C_WPA /* 802.11i */ 631/* XXX looks like WME is partly supported? */ 632#if 0 633 | IEEE80211_C_IBSS /* IBSS mode support */ 634 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 635 | IEEE80211_C_WME /* 802.11e */ 636 | IEEE80211_C_HOSTAP /* Host access point mode */ 637#endif 638 ; 639 640 /* 641 * Read in the eeprom and also setup the channels for 642 * net80211. We don't set the rates as net80211 does this for us 643 */ 644 wpi_read_eeprom(sc, macaddr); 645 646 if (bootverbose || WPI_DEBUG_SET) { 647 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 648 device_printf(sc->sc_dev, "Hardware Type: %c\n", 649 sc->type > 1 ? 'B': '?'); 650 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 651 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 652 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 653 supportsa ? "does" : "does not"); 654 655 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 656 what sc->rev really represents - benjsc 20070615 */ 657 } 658 659 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 660 ifp->if_softc = sc; 661 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 662 ifp->if_init = wpi_init; 663 ifp->if_ioctl = wpi_ioctl; 664 ifp->if_start = wpi_start; 665 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 666 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 667 IFQ_SET_READY(&ifp->if_snd); 668 669 ieee80211_ifattach(ic, macaddr); 670 /* override default methods */ 671 ic->ic_node_alloc = wpi_node_alloc; 672 ic->ic_newassoc = wpi_newassoc; 673 ic->ic_raw_xmit = wpi_raw_xmit; 674 ic->ic_wme.wme_update = wpi_wme_update; 675 ic->ic_scan_start = wpi_scan_start; 676 ic->ic_scan_end = wpi_scan_end; 677 ic->ic_set_channel = wpi_set_channel; 678 ic->ic_scan_curchan = wpi_scan_curchan; 679 ic->ic_scan_mindwell = wpi_scan_mindwell; 680 681 ic->ic_vap_create = wpi_vap_create; 682 ic->ic_vap_delete = wpi_vap_delete; 683 684 ieee80211_radiotap_attach(ic, 685 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 686 WPI_TX_RADIOTAP_PRESENT, 687 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 688 WPI_RX_RADIOTAP_PRESENT); 689 690 /* 691 * Hook our interrupt after all initialization is complete. 692 */ 693 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 694 NULL, wpi_intr, sc, &sc->sc_ih); 695 if (error != 0) { 696 device_printf(dev, "could not set up interrupt\n"); 697 goto fail; 698 } 699 700 if (bootverbose) 701 ieee80211_announce(ic); 702#ifdef XXX_DEBUG 703 ieee80211_announce_channels(ic); 704#endif 705 return 0; 706 707fail: wpi_detach(dev); 708 return ENXIO; 709} 710 711static int 712wpi_detach(device_t dev) 713{ 714 struct wpi_softc *sc = device_get_softc(dev); 715 struct ifnet *ifp = sc->sc_ifp; 716 struct ieee80211com *ic = ifp->if_l2com; 717 int ac; 718 719 ieee80211_draintask(ic, &sc->sc_restarttask); 720 ieee80211_draintask(ic, &sc->sc_radiotask); 721 722 if (ifp != NULL) { 723 wpi_stop(sc); 724 callout_drain(&sc->watchdog_to); 725 callout_drain(&sc->calib_to); 726 ieee80211_ifdetach(ic); 727 } 728 729 WPI_LOCK(sc); 730 if (sc->txq[0].data_dmat) { 731 for (ac = 0; ac < WME_NUM_AC; ac++) 732 wpi_free_tx_ring(sc, &sc->txq[ac]); 733 734 wpi_free_tx_ring(sc, &sc->cmdq); 735 wpi_free_rx_ring(sc, &sc->rxq); 736 wpi_free_shared(sc); 737 } 738 739 if (sc->fw_fp != NULL) { 740 wpi_unload_firmware(sc); 741 } 742 743 if (sc->fw_dma.tag) 744 wpi_free_fwmem(sc); 745 WPI_UNLOCK(sc); 746 747 if (sc->irq != NULL) { 748 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 749 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 750 } 751 752 if (sc->mem != NULL) 753 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 754 755 if (ifp != NULL) 756 if_free(ifp); 757 758 WPI_LOCK_DESTROY(sc); 759 760 return 0; 761} 762 763static struct ieee80211vap * 764wpi_vap_create(struct ieee80211com *ic, 765 const char name[IFNAMSIZ], int unit, int opmode, int flags, 766 const uint8_t bssid[IEEE80211_ADDR_LEN], 767 const uint8_t mac[IEEE80211_ADDR_LEN]) 768{ 769 struct wpi_vap *wvp; 770 struct ieee80211vap *vap; 771 772 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 773 return NULL; 774 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 775 M_80211_VAP, M_NOWAIT | M_ZERO); 776 if (wvp == NULL) 777 return NULL; 778 vap = &wvp->vap; 779 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 780 /* override with driver methods */ 781 wvp->newstate = vap->iv_newstate; 782 vap->iv_newstate = wpi_newstate; 783 784 ieee80211_amrr_init(&wvp->amrr, vap, 785 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD, 786 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD, 787 500 /*ms*/); 788 789 /* complete setup */ 790 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 791 ic->ic_opmode = opmode; 792 return vap; 793} 794 795static void 796wpi_vap_delete(struct ieee80211vap *vap) 797{ 798 struct wpi_vap *wvp = WPI_VAP(vap); 799 800 ieee80211_amrr_cleanup(&wvp->amrr); 801 ieee80211_vap_detach(vap); 802 free(wvp, M_80211_VAP); 803} 804 805static void 806wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 807{ 808 if (error != 0) 809 return; 810 811 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 812 813 *(bus_addr_t *)arg = segs[0].ds_addr; 814} 815 816/* 817 * Allocates a contiguous block of dma memory of the requested size and 818 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 819 * allocations greater than 4096 may fail. Hence if the requested alignment is 820 * greater we allocate 'alignment' size extra memory and shift the vaddr and 821 * paddr after the dma load. This bypasses the problem at the cost of a little 822 * more memory. 823 */ 824static int 825wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 826 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 827{ 828 int error; 829 bus_size_t align; 830 bus_size_t reqsize; 831 832 DPRINTFN(WPI_DEBUG_DMA, 833 ("Size: %zd - alignment %zd\n", size, alignment)); 834 835 dma->size = size; 836 dma->tag = NULL; 837 838 if (alignment > 4096) { 839 align = PAGE_SIZE; 840 reqsize = size + alignment; 841 } else { 842 align = alignment; 843 reqsize = size; 844 } 845 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 846 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 847 NULL, NULL, reqsize, 848 1, reqsize, flags, 849 NULL, NULL, &dma->tag); 850 if (error != 0) { 851 device_printf(sc->sc_dev, 852 "could not create shared page DMA tag\n"); 853 goto fail; 854 } 855 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 856 flags | BUS_DMA_ZERO, &dma->map); 857 if (error != 0) { 858 device_printf(sc->sc_dev, 859 "could not allocate shared page DMA memory\n"); 860 goto fail; 861 } 862 863 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 864 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 865 866 /* Save the original pointers so we can free all the memory */ 867 dma->paddr = dma->paddr_start; 868 dma->vaddr = dma->vaddr_start; 869 870 /* 871 * Check the alignment and increment by 4096 until we get the 872 * requested alignment. Fail if can't obtain the alignment 873 * we requested. 874 */ 875 if ((dma->paddr & (alignment -1 )) != 0) { 876 int i; 877 878 for (i = 0; i < alignment / 4096; i++) { 879 if ((dma->paddr & (alignment - 1 )) == 0) 880 break; 881 dma->paddr += 4096; 882 dma->vaddr += 4096; 883 } 884 if (i == alignment / 4096) { 885 device_printf(sc->sc_dev, 886 "alignment requirement was not satisfied\n"); 887 goto fail; 888 } 889 } 890 891 if (error != 0) { 892 device_printf(sc->sc_dev, 893 "could not load shared page DMA map\n"); 894 goto fail; 895 } 896 897 if (kvap != NULL) 898 *kvap = dma->vaddr; 899 900 return 0; 901 902fail: 903 wpi_dma_contig_free(dma); 904 return error; 905} 906 907static void 908wpi_dma_contig_free(struct wpi_dma_info *dma) 909{ 910 if (dma->tag) { 911 if (dma->map != NULL) { 912 if (dma->paddr_start != 0) { 913 bus_dmamap_sync(dma->tag, dma->map, 914 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 915 bus_dmamap_unload(dma->tag, dma->map); 916 } 917 bus_dmamem_free(dma->tag, &dma->vaddr_start, dma->map); 918 } 919 bus_dma_tag_destroy(dma->tag); 920 } 921} 922 923/* 924 * Allocate a shared page between host and NIC. 925 */ 926static int 927wpi_alloc_shared(struct wpi_softc *sc) 928{ 929 int error; 930 931 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 932 (void **)&sc->shared, sizeof (struct wpi_shared), 933 PAGE_SIZE, 934 BUS_DMA_NOWAIT); 935 936 if (error != 0) { 937 device_printf(sc->sc_dev, 938 "could not allocate shared area DMA memory\n"); 939 } 940 941 return error; 942} 943 944static void 945wpi_free_shared(struct wpi_softc *sc) 946{ 947 wpi_dma_contig_free(&sc->shared_dma); 948} 949 950static int 951wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 952{ 953 954 int i, error; 955 956 ring->cur = 0; 957 958 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 959 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 960 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 961 962 if (error != 0) { 963 device_printf(sc->sc_dev, 964 "%s: could not allocate rx ring DMA memory, error %d\n", 965 __func__, error); 966 goto fail; 967 } 968 969 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 970 BUS_SPACE_MAXADDR_32BIT, 971 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 972 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 973 if (error != 0) { 974 device_printf(sc->sc_dev, 975 "%s: bus_dma_tag_create_failed, error %d\n", 976 __func__, error); 977 goto fail; 978 } 979 980 /* 981 * Setup Rx buffers. 982 */ 983 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 984 struct wpi_rx_data *data = &ring->data[i]; 985 struct mbuf *m; 986 bus_addr_t paddr; 987 988 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 989 if (error != 0) { 990 device_printf(sc->sc_dev, 991 "%s: bus_dmamap_create failed, error %d\n", 992 __func__, error); 993 goto fail; 994 } 995 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 996 if (m == NULL) { 997 device_printf(sc->sc_dev, 998 "%s: could not allocate rx mbuf\n", __func__); 999 error = ENOMEM; 1000 goto fail; 1001 } 1002 /* map page */ 1003 error = bus_dmamap_load(ring->data_dmat, data->map, 1004 mtod(m, caddr_t), MJUMPAGESIZE, 1005 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1006 if (error != 0 && error != EFBIG) { 1007 device_printf(sc->sc_dev, 1008 "%s: bus_dmamap_load failed, error %d\n", 1009 __func__, error); 1010 m_freem(m); 1011 error = ENOMEM; /* XXX unique code */ 1012 goto fail; 1013 } 1014 bus_dmamap_sync(ring->data_dmat, data->map, 1015 BUS_DMASYNC_PREWRITE); 1016 1017 data->m = m; 1018 ring->desc[i] = htole32(paddr); 1019 } 1020 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1021 BUS_DMASYNC_PREWRITE); 1022 return 0; 1023fail: 1024 wpi_free_rx_ring(sc, ring); 1025 return error; 1026} 1027 1028static void 1029wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1030{ 1031 int ntries; 1032 1033 wpi_mem_lock(sc); 1034 1035 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1036 1037 for (ntries = 0; ntries < 100; ntries++) { 1038 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1039 break; 1040 DELAY(10); 1041 } 1042 1043 wpi_mem_unlock(sc); 1044 1045#ifdef WPI_DEBUG 1046 if (ntries == 100 && wpi_debug > 0) 1047 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1048#endif 1049 1050 ring->cur = 0; 1051} 1052 1053static void 1054wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1055{ 1056 int i; 1057 1058 wpi_dma_contig_free(&ring->desc_dma); 1059 1060 for (i = 0; i < WPI_RX_RING_COUNT; i++) 1061 if (ring->data[i].m != NULL) 1062 m_freem(ring->data[i].m); 1063} 1064 1065static int 1066wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1067 int qid) 1068{ 1069 struct wpi_tx_data *data; 1070 int i, error; 1071 1072 ring->qid = qid; 1073 ring->count = count; 1074 ring->queued = 0; 1075 ring->cur = 0; 1076 ring->data = NULL; 1077 1078 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1079 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1080 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1081 1082 if (error != 0) { 1083 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1084 goto fail; 1085 } 1086 1087 /* update shared page with ring's base address */ 1088 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1089 1090 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1091 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1092 BUS_DMA_NOWAIT); 1093 1094 if (error != 0) { 1095 device_printf(sc->sc_dev, 1096 "could not allocate tx command DMA memory\n"); 1097 goto fail; 1098 } 1099 1100 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1101 M_NOWAIT | M_ZERO); 1102 if (ring->data == NULL) { 1103 device_printf(sc->sc_dev, 1104 "could not allocate tx data slots\n"); 1105 goto fail; 1106 } 1107 1108 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1109 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1110 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1111 &ring->data_dmat); 1112 if (error != 0) { 1113 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1114 goto fail; 1115 } 1116 1117 for (i = 0; i < count; i++) { 1118 data = &ring->data[i]; 1119 1120 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1121 if (error != 0) { 1122 device_printf(sc->sc_dev, 1123 "could not create tx buf DMA map\n"); 1124 goto fail; 1125 } 1126 bus_dmamap_sync(ring->data_dmat, data->map, 1127 BUS_DMASYNC_PREWRITE); 1128 } 1129 1130 return 0; 1131 1132fail: 1133 wpi_free_tx_ring(sc, ring); 1134 return error; 1135} 1136 1137static void 1138wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1139{ 1140 struct wpi_tx_data *data; 1141 int i, ntries; 1142 1143 wpi_mem_lock(sc); 1144 1145 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1146 for (ntries = 0; ntries < 100; ntries++) { 1147 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1148 break; 1149 DELAY(10); 1150 } 1151#ifdef WPI_DEBUG 1152 if (ntries == 100 && wpi_debug > 0) 1153 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1154 ring->qid); 1155#endif 1156 wpi_mem_unlock(sc); 1157 1158 for (i = 0; i < ring->count; i++) { 1159 data = &ring->data[i]; 1160 1161 if (data->m != NULL) { 1162 bus_dmamap_unload(ring->data_dmat, data->map); 1163 m_freem(data->m); 1164 data->m = NULL; 1165 } 1166 } 1167 1168 ring->queued = 0; 1169 ring->cur = 0; 1170} 1171 1172static void 1173wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1174{ 1175 struct wpi_tx_data *data; 1176 int i; 1177 1178 wpi_dma_contig_free(&ring->desc_dma); 1179 wpi_dma_contig_free(&ring->cmd_dma); 1180 1181 if (ring->data != NULL) { 1182 for (i = 0; i < ring->count; i++) { 1183 data = &ring->data[i]; 1184 1185 if (data->m != NULL) { 1186 bus_dmamap_sync(ring->data_dmat, data->map, 1187 BUS_DMASYNC_POSTWRITE); 1188 bus_dmamap_unload(ring->data_dmat, data->map); 1189 m_freem(data->m); 1190 data->m = NULL; 1191 } 1192 } 1193 free(ring->data, M_DEVBUF); 1194 } 1195 1196 if (ring->data_dmat != NULL) 1197 bus_dma_tag_destroy(ring->data_dmat); 1198} 1199 1200static int 1201wpi_shutdown(device_t dev) 1202{ 1203 struct wpi_softc *sc = device_get_softc(dev); 1204 1205 WPI_LOCK(sc); 1206 wpi_stop_locked(sc); 1207 wpi_unload_firmware(sc); 1208 WPI_UNLOCK(sc); 1209 1210 return 0; 1211} 1212 1213static int 1214wpi_suspend(device_t dev) 1215{ 1216 struct wpi_softc *sc = device_get_softc(dev); 1217 1218 wpi_stop(sc); 1219 return 0; 1220} 1221 1222static int 1223wpi_resume(device_t dev) 1224{ 1225 struct wpi_softc *sc = device_get_softc(dev); 1226 struct ifnet *ifp = sc->sc_ifp; 1227 1228 pci_write_config(dev, 0x41, 0, 1); 1229 1230 if (ifp->if_flags & IFF_UP) { 1231 wpi_init(ifp->if_softc); 1232 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1233 wpi_start(ifp); 1234 } 1235 return 0; 1236} 1237 1238/* ARGSUSED */ 1239static struct ieee80211_node * 1240wpi_node_alloc(struct ieee80211vap *vap __unused, 1241 const uint8_t mac[IEEE80211_ADDR_LEN] __unused) 1242{ 1243 struct wpi_node *wn; 1244 1245 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 1246 1247 return &wn->ni; 1248} 1249 1250/** 1251 * Called by net80211 when ever there is a change to 80211 state machine 1252 */ 1253static int 1254wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1255{ 1256 struct wpi_vap *wvp = WPI_VAP(vap); 1257 struct ieee80211com *ic = vap->iv_ic; 1258 struct ifnet *ifp = ic->ic_ifp; 1259 struct wpi_softc *sc = ifp->if_softc; 1260 int error; 1261 1262 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1263 ieee80211_state_name[vap->iv_state], 1264 ieee80211_state_name[nstate], sc->flags)); 1265 1266 IEEE80211_UNLOCK(ic); 1267 WPI_LOCK(sc); 1268 if (nstate == IEEE80211_S_AUTH) { 1269 /* The node must be registered in the firmware before auth */ 1270 error = wpi_auth(sc, vap); 1271 if (error != 0) { 1272 device_printf(sc->sc_dev, 1273 "%s: could not move to auth state, error %d\n", 1274 __func__, error); 1275 } 1276 } 1277 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1278 error = wpi_run(sc, vap); 1279 if (error != 0) { 1280 device_printf(sc->sc_dev, 1281 "%s: could not move to run state, error %d\n", 1282 __func__, error); 1283 } 1284 } 1285 if (nstate == IEEE80211_S_RUN) { 1286 /* RUN -> RUN transition; just restart the timers */ 1287 wpi_calib_timeout(sc); 1288 /* XXX split out rate control timer */ 1289 } 1290 WPI_UNLOCK(sc); 1291 IEEE80211_LOCK(ic); 1292 return wvp->newstate(vap, nstate, arg); 1293} 1294 1295/* 1296 * Grab exclusive access to NIC memory. 1297 */ 1298static void 1299wpi_mem_lock(struct wpi_softc *sc) 1300{ 1301 int ntries; 1302 uint32_t tmp; 1303 1304 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1305 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1306 1307 /* spin until we actually get the lock */ 1308 for (ntries = 0; ntries < 100; ntries++) { 1309 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1310 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1311 break; 1312 DELAY(10); 1313 } 1314 if (ntries == 100) 1315 device_printf(sc->sc_dev, "could not lock memory\n"); 1316} 1317 1318/* 1319 * Release lock on NIC memory. 1320 */ 1321static void 1322wpi_mem_unlock(struct wpi_softc *sc) 1323{ 1324 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1325 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1326} 1327 1328static uint32_t 1329wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1330{ 1331 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1332 return WPI_READ(sc, WPI_READ_MEM_DATA); 1333} 1334 1335static void 1336wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1337{ 1338 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1339 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1340} 1341 1342static void 1343wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1344 const uint32_t *data, int wlen) 1345{ 1346 for (; wlen > 0; wlen--, data++, addr+=4) 1347 wpi_mem_write(sc, addr, *data); 1348} 1349 1350/* 1351 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1352 * using the traditional bit-bang method. Data is read up until len bytes have 1353 * been obtained. 1354 */ 1355static uint16_t 1356wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1357{ 1358 int ntries; 1359 uint32_t val; 1360 uint8_t *out = data; 1361 1362 wpi_mem_lock(sc); 1363 1364 for (; len > 0; len -= 2, addr++) { 1365 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1366 1367 for (ntries = 0; ntries < 10; ntries++) { 1368 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1369 break; 1370 DELAY(5); 1371 } 1372 1373 if (ntries == 10) { 1374 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1375 return ETIMEDOUT; 1376 } 1377 1378 *out++= val >> 16; 1379 if (len > 1) 1380 *out ++= val >> 24; 1381 } 1382 1383 wpi_mem_unlock(sc); 1384 1385 return 0; 1386} 1387 1388/* 1389 * The firmware text and data segments are transferred to the NIC using DMA. 1390 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1391 * where to find it. Once the NIC has copied the firmware into its internal 1392 * memory, we can free our local copy in the driver. 1393 */ 1394static int 1395wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1396{ 1397 int error, ntries; 1398 1399 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1400 1401 size /= sizeof(uint32_t); 1402 1403 wpi_mem_lock(sc); 1404 1405 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1406 (const uint32_t *)fw, size); 1407 1408 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1409 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1410 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1411 1412 /* run microcode */ 1413 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1414 1415 /* wait while the adapter is busy copying the firmware */ 1416 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1417 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1418 DPRINTFN(WPI_DEBUG_HW, 1419 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1420 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1421 if (status & WPI_TX_IDLE(6)) { 1422 DPRINTFN(WPI_DEBUG_HW, 1423 ("Status Match! - ntries = %d\n", ntries)); 1424 break; 1425 } 1426 DELAY(10); 1427 } 1428 if (ntries == 1000) { 1429 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1430 error = ETIMEDOUT; 1431 } 1432 1433 /* start the microcode executing */ 1434 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1435 1436 wpi_mem_unlock(sc); 1437 1438 return (error); 1439} 1440 1441static void 1442wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1443 struct wpi_rx_data *data) 1444{ 1445 struct ifnet *ifp = sc->sc_ifp; 1446 struct ieee80211com *ic = ifp->if_l2com; 1447 struct wpi_rx_ring *ring = &sc->rxq; 1448 struct wpi_rx_stat *stat; 1449 struct wpi_rx_head *head; 1450 struct wpi_rx_tail *tail; 1451 struct ieee80211_node *ni; 1452 struct mbuf *m, *mnew; 1453 bus_addr_t paddr; 1454 int error; 1455 1456 stat = (struct wpi_rx_stat *)(desc + 1); 1457 1458 if (stat->len > WPI_STAT_MAXLEN) { 1459 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1460 ifp->if_ierrors++; 1461 return; 1462 } 1463 1464 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1465 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1466 1467 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1468 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1469 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1470 (uintmax_t)le64toh(tail->tstamp))); 1471 1472 /* discard Rx frames with bad CRC early */ 1473 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1474 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1475 le32toh(tail->flags))); 1476 ifp->if_ierrors++; 1477 return; 1478 } 1479 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1480 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1481 le16toh(head->len))); 1482 ifp->if_ierrors++; 1483 return; 1484 } 1485 1486 /* XXX don't need mbuf, just dma buffer */ 1487 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1488 if (mnew == NULL) { 1489 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1490 __func__)); 1491 ifp->if_ierrors++; 1492 return; 1493 } 1494 error = bus_dmamap_load(ring->data_dmat, data->map, 1495 mtod(mnew, caddr_t), MJUMPAGESIZE, 1496 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1497 if (error != 0 && error != EFBIG) { 1498 device_printf(sc->sc_dev, 1499 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1500 m_freem(mnew); 1501 ifp->if_ierrors++; 1502 return; 1503 } 1504 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1505 1506 /* finalize mbuf and swap in new one */ 1507 m = data->m; 1508 m->m_pkthdr.rcvif = ifp; 1509 m->m_data = (caddr_t)(head + 1); 1510 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1511 1512 data->m = mnew; 1513 /* update Rx descriptor */ 1514 ring->desc[ring->cur] = htole32(paddr); 1515 1516 if (ieee80211_radiotap_active(ic)) { 1517 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1518 1519 tap->wr_flags = 0; 1520 tap->wr_chan_freq = 1521 htole16(ic->ic_channels[head->chan].ic_freq); 1522 tap->wr_chan_flags = 1523 htole16(ic->ic_channels[head->chan].ic_flags); 1524 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1525 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1526 tap->wr_tsft = tail->tstamp; 1527 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1528 switch (head->rate) { 1529 /* CCK rates */ 1530 case 10: tap->wr_rate = 2; break; 1531 case 20: tap->wr_rate = 4; break; 1532 case 55: tap->wr_rate = 11; break; 1533 case 110: tap->wr_rate = 22; break; 1534 /* OFDM rates */ 1535 case 0xd: tap->wr_rate = 12; break; 1536 case 0xf: tap->wr_rate = 18; break; 1537 case 0x5: tap->wr_rate = 24; break; 1538 case 0x7: tap->wr_rate = 36; break; 1539 case 0x9: tap->wr_rate = 48; break; 1540 case 0xb: tap->wr_rate = 72; break; 1541 case 0x1: tap->wr_rate = 96; break; 1542 case 0x3: tap->wr_rate = 108; break; 1543 /* unknown rate: should not happen */ 1544 default: tap->wr_rate = 0; 1545 } 1546 if (le16toh(head->flags) & 0x4) 1547 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1548 } 1549 1550 WPI_UNLOCK(sc); 1551 1552 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1553 if (ni != NULL) { 1554 (void) ieee80211_input(ni, m, stat->rssi, 0); 1555 ieee80211_free_node(ni); 1556 } else 1557 (void) ieee80211_input_all(ic, m, stat->rssi, 0); 1558 1559 WPI_LOCK(sc); 1560} 1561 1562static void 1563wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1564{ 1565 struct ifnet *ifp = sc->sc_ifp; 1566 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1567 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1568 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1569 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1570 1571 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1572 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1573 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1574 le32toh(stat->status))); 1575 1576 /* 1577 * Update rate control statistics for the node. 1578 * XXX we should not count mgmt frames since they're always sent at 1579 * the lowest available bit-rate. 1580 * XXX frames w/o ACK shouldn't be used either 1581 */ 1582 wn->amn.amn_txcnt++; 1583 if (stat->ntries > 0) { 1584 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1585 wn->amn.amn_retrycnt++; 1586 } 1587 1588 /* XXX oerrors should only count errors !maxtries */ 1589 if ((le32toh(stat->status) & 0xff) != 1) 1590 ifp->if_oerrors++; 1591 else 1592 ifp->if_opackets++; 1593 1594 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1595 bus_dmamap_unload(ring->data_dmat, txdata->map); 1596 /* XXX handle M_TXCB? */ 1597 m_freem(txdata->m); 1598 txdata->m = NULL; 1599 ieee80211_free_node(txdata->ni); 1600 txdata->ni = NULL; 1601 1602 ring->queued--; 1603 1604 sc->sc_tx_timer = 0; 1605 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1606 wpi_start_locked(ifp); 1607} 1608 1609static void 1610wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1611{ 1612 struct wpi_tx_ring *ring = &sc->cmdq; 1613 struct wpi_tx_data *data; 1614 1615 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1616 "type=%s len=%d\n", desc->qid, desc->idx, 1617 desc->flags, wpi_cmd_str(desc->type), 1618 le32toh(desc->len))); 1619 1620 if ((desc->qid & 7) != 4) 1621 return; /* not a command ack */ 1622 1623 data = &ring->data[desc->idx]; 1624 1625 /* if the command was mapped in a mbuf, free it */ 1626 if (data->m != NULL) { 1627 bus_dmamap_unload(ring->data_dmat, data->map); 1628 m_freem(data->m); 1629 data->m = NULL; 1630 } 1631 1632 sc->flags &= ~WPI_FLAG_BUSY; 1633 wakeup(&ring->cmd[desc->idx]); 1634} 1635 1636static void 1637wpi_notif_intr(struct wpi_softc *sc) 1638{ 1639 struct ifnet *ifp = sc->sc_ifp; 1640 struct ieee80211com *ic = ifp->if_l2com; 1641 struct wpi_rx_desc *desc; 1642 struct wpi_rx_data *data; 1643 uint32_t hw; 1644 1645 hw = le32toh(sc->shared->next); 1646 while (sc->rxq.cur != hw) { 1647 data = &sc->rxq.data[sc->rxq.cur]; 1648 desc = (void *)data->m->m_ext.ext_buf; 1649 1650 DPRINTFN(WPI_DEBUG_NOTIFY, 1651 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1652 desc->qid, 1653 desc->idx, 1654 desc->flags, 1655 desc->type, 1656 le32toh(desc->len))); 1657 1658 if (!(desc->qid & 0x80)) /* reply to a command */ 1659 wpi_cmd_intr(sc, desc); 1660 1661 switch (desc->type) { 1662 case WPI_RX_DONE: 1663 /* a 802.11 frame was received */ 1664 wpi_rx_intr(sc, desc, data); 1665 break; 1666 1667 case WPI_TX_DONE: 1668 /* a 802.11 frame has been transmitted */ 1669 wpi_tx_intr(sc, desc); 1670 break; 1671 1672 case WPI_UC_READY: 1673 { 1674 struct wpi_ucode_info *uc = 1675 (struct wpi_ucode_info *)(desc + 1); 1676 1677 /* the microcontroller is ready */ 1678 DPRINTF(("microcode alive notification version %x " 1679 "alive %x\n", le32toh(uc->version), 1680 le32toh(uc->valid))); 1681 1682 if (le32toh(uc->valid) != 1) { 1683 device_printf(sc->sc_dev, 1684 "microcontroller initialization failed\n"); 1685 wpi_stop_locked(sc); 1686 } 1687 break; 1688 } 1689 case WPI_STATE_CHANGED: 1690 { 1691 uint32_t *status = (uint32_t *)(desc + 1); 1692 1693 /* enabled/disabled notification */ 1694 DPRINTF(("state changed to %x\n", le32toh(*status))); 1695 1696 if (le32toh(*status) & 1) { 1697 device_printf(sc->sc_dev, 1698 "Radio transmitter is switched off\n"); 1699 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1700 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1701 /* Disable firmware commands */ 1702 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1703 } 1704 break; 1705 } 1706 case WPI_START_SCAN: 1707 { 1708#ifdef WPI_DEBUG 1709 struct wpi_start_scan *scan = 1710 (struct wpi_start_scan *)(desc + 1); 1711#endif 1712 1713 DPRINTFN(WPI_DEBUG_SCANNING, 1714 ("scanning channel %d status %x\n", 1715 scan->chan, le32toh(scan->status))); 1716 break; 1717 } 1718 case WPI_STOP_SCAN: 1719 { 1720#ifdef WPI_DEBUG 1721 struct wpi_stop_scan *scan = 1722 (struct wpi_stop_scan *)(desc + 1); 1723#endif 1724 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1725 1726 DPRINTFN(WPI_DEBUG_SCANNING, 1727 ("scan finished nchan=%d status=%d chan=%d\n", 1728 scan->nchan, scan->status, scan->chan)); 1729 1730 sc->sc_scan_timer = 0; 1731 ieee80211_scan_next(vap); 1732 break; 1733 } 1734 case WPI_MISSED_BEACON: 1735 { 1736 struct wpi_missed_beacon *beacon = 1737 (struct wpi_missed_beacon *)(desc + 1); 1738 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1739 1740 if (le32toh(beacon->consecutive) >= 1741 vap->iv_bmissthreshold) { 1742 DPRINTF(("Beacon miss: %u >= %u\n", 1743 le32toh(beacon->consecutive), 1744 vap->iv_bmissthreshold)); 1745 ieee80211_beacon_miss(ic); 1746 } 1747 break; 1748 } 1749 } 1750 1751 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1752 } 1753 1754 /* tell the firmware what we have processed */ 1755 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1756 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1757} 1758 1759static void 1760wpi_intr(void *arg) 1761{ 1762 struct wpi_softc *sc = arg; 1763 uint32_t r; 1764 1765 WPI_LOCK(sc); 1766 1767 r = WPI_READ(sc, WPI_INTR); 1768 if (r == 0 || r == 0xffffffff) { 1769 WPI_UNLOCK(sc); 1770 return; 1771 } 1772 1773 /* disable interrupts */ 1774 WPI_WRITE(sc, WPI_MASK, 0); 1775 /* ack interrupts */ 1776 WPI_WRITE(sc, WPI_INTR, r); 1777 1778 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1779 struct ifnet *ifp = sc->sc_ifp; 1780 struct ieee80211com *ic = ifp->if_l2com; 1781 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1782 1783 device_printf(sc->sc_dev, "fatal firmware error\n"); 1784 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1785 "(Hardware Error)")); 1786 if (vap != NULL) 1787 ieee80211_cancel_scan(vap); 1788 ieee80211_runtask(ic, &sc->sc_restarttask); 1789 sc->flags &= ~WPI_FLAG_BUSY; 1790 WPI_UNLOCK(sc); 1791 return; 1792 } 1793 1794 if (r & WPI_RX_INTR) 1795 wpi_notif_intr(sc); 1796 1797 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1798 wakeup(sc); 1799 1800 /* re-enable interrupts */ 1801 if (sc->sc_ifp->if_flags & IFF_UP) 1802 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1803 1804 WPI_UNLOCK(sc); 1805} 1806 1807static uint8_t 1808wpi_plcp_signal(int rate) 1809{ 1810 switch (rate) { 1811 /* CCK rates (returned values are device-dependent) */ 1812 case 2: return 10; 1813 case 4: return 20; 1814 case 11: return 55; 1815 case 22: return 110; 1816 1817 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1818 /* R1-R4 (ral/ural is R4-R1) */ 1819 case 12: return 0xd; 1820 case 18: return 0xf; 1821 case 24: return 0x5; 1822 case 36: return 0x7; 1823 case 48: return 0x9; 1824 case 72: return 0xb; 1825 case 96: return 0x1; 1826 case 108: return 0x3; 1827 1828 /* unsupported rates (should not get there) */ 1829 default: return 0; 1830 } 1831} 1832 1833/* quickly determine if a given rate is CCK or OFDM */ 1834#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1835 1836/* 1837 * Construct the data packet for a transmit buffer and acutally put 1838 * the buffer onto the transmit ring, kicking the card to process the 1839 * the buffer. 1840 */ 1841static int 1842wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1843 int ac) 1844{ 1845 struct ieee80211vap *vap = ni->ni_vap; 1846 struct ifnet *ifp = sc->sc_ifp; 1847 struct ieee80211com *ic = ifp->if_l2com; 1848 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1849 struct wpi_tx_ring *ring = &sc->txq[ac]; 1850 struct wpi_tx_desc *desc; 1851 struct wpi_tx_data *data; 1852 struct wpi_tx_cmd *cmd; 1853 struct wpi_cmd_data *tx; 1854 struct ieee80211_frame *wh; 1855 const struct ieee80211_txparam *tp; 1856 struct ieee80211_key *k; 1857 struct mbuf *mnew; 1858 int i, error, nsegs, rate, hdrlen, ismcast; 1859 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1860 1861 desc = &ring->desc[ring->cur]; 1862 data = &ring->data[ring->cur]; 1863 1864 wh = mtod(m0, struct ieee80211_frame *); 1865 1866 hdrlen = ieee80211_hdrsize(wh); 1867 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1868 1869 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1870 k = ieee80211_crypto_encap(ni, m0); 1871 if (k == NULL) { 1872 m_freem(m0); 1873 return ENOBUFS; 1874 } 1875 /* packet header may have moved, reset our local pointer */ 1876 wh = mtod(m0, struct ieee80211_frame *); 1877 } 1878 1879 cmd = &ring->cmd[ring->cur]; 1880 cmd->code = WPI_CMD_TX_DATA; 1881 cmd->flags = 0; 1882 cmd->qid = ring->qid; 1883 cmd->idx = ring->cur; 1884 1885 tx = (struct wpi_cmd_data *)cmd->data; 1886 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1887 tx->timeout = htole16(0); 1888 tx->ofdm_mask = 0xff; 1889 tx->cck_mask = 0x0f; 1890 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1891 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1892 tx->len = htole16(m0->m_pkthdr.len); 1893 1894 if (!ismcast) { 1895 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1896 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1897 tx->flags |= htole32(WPI_TX_NEED_ACK); 1898 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1899 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1900 tx->rts_ntries = 7; 1901 } 1902 } 1903 /* pick a rate */ 1904 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1905 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1906 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1907 /* tell h/w to set timestamp in probe responses */ 1908 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1909 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1910 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1911 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1912 tx->timeout = htole16(3); 1913 else 1914 tx->timeout = htole16(2); 1915 rate = tp->mgmtrate; 1916 } else if (ismcast) { 1917 rate = tp->mcastrate; 1918 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1919 rate = tp->ucastrate; 1920 } else { 1921 (void) ieee80211_amrr_choose(ni, &WPI_NODE(ni)->amn); 1922 rate = ni->ni_txrate; 1923 } 1924 tx->rate = wpi_plcp_signal(rate); 1925 1926 /* be very persistant at sending frames out */ 1927#if 0 1928 tx->data_ntries = tp->maxretry; 1929#else 1930 tx->data_ntries = 15; /* XXX way too high */ 1931#endif 1932 1933 if (ieee80211_radiotap_active_vap(vap)) { 1934 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1935 tap->wt_flags = 0; 1936 tap->wt_rate = rate; 1937 tap->wt_hwqueue = ac; 1938 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1939 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1940 1941 ieee80211_radiotap_tx(vap, m0); 1942 } 1943 1944 /* save and trim IEEE802.11 header */ 1945 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1946 m_adj(m0, hdrlen); 1947 1948 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 1949 &nsegs, BUS_DMA_NOWAIT); 1950 if (error != 0 && error != EFBIG) { 1951 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1952 error); 1953 m_freem(m0); 1954 return error; 1955 } 1956 if (error != 0) { 1957 /* XXX use m_collapse */ 1958 mnew = m_defrag(m0, M_DONTWAIT); 1959 if (mnew == NULL) { 1960 device_printf(sc->sc_dev, 1961 "could not defragment mbuf\n"); 1962 m_freem(m0); 1963 return ENOBUFS; 1964 } 1965 m0 = mnew; 1966 1967 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 1968 m0, segs, &nsegs, BUS_DMA_NOWAIT); 1969 if (error != 0) { 1970 device_printf(sc->sc_dev, 1971 "could not map mbuf (error %d)\n", error); 1972 m_freem(m0); 1973 return error; 1974 } 1975 } 1976 1977 data->m = m0; 1978 data->ni = ni; 1979 1980 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1981 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 1982 1983 /* first scatter/gather segment is used by the tx data command */ 1984 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1985 (1 + nsegs) << 24); 1986 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1987 ring->cur * sizeof (struct wpi_tx_cmd)); 1988 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1989 for (i = 1; i <= nsegs; i++) { 1990 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 1991 desc->segs[i].len = htole32(segs[i - 1].ds_len); 1992 } 1993 1994 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1995 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1996 BUS_DMASYNC_PREWRITE); 1997 1998 ring->queued++; 1999 2000 /* kick ring */ 2001 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2002 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2003 2004 return 0; 2005} 2006 2007/** 2008 * Process data waiting to be sent on the IFNET output queue 2009 */ 2010static void 2011wpi_start(struct ifnet *ifp) 2012{ 2013 struct wpi_softc *sc = ifp->if_softc; 2014 2015 WPI_LOCK(sc); 2016 wpi_start_locked(ifp); 2017 WPI_UNLOCK(sc); 2018} 2019 2020static void 2021wpi_start_locked(struct ifnet *ifp) 2022{ 2023 struct wpi_softc *sc = ifp->if_softc; 2024 struct ieee80211_node *ni; 2025 struct mbuf *m; 2026 int ac; 2027 2028 WPI_LOCK_ASSERT(sc); 2029 2030 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2031 return; 2032 2033 for (;;) { 2034 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2035 if (m == NULL) 2036 break; 2037 ac = M_WME_GETAC(m); 2038 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2039 /* there is no place left in this ring */ 2040 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2041 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2042 break; 2043 } 2044 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2045 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2046 ieee80211_free_node(ni); 2047 ifp->if_oerrors++; 2048 break; 2049 } 2050 sc->sc_tx_timer = 5; 2051 } 2052} 2053 2054static int 2055wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2056 const struct ieee80211_bpf_params *params) 2057{ 2058 struct ieee80211com *ic = ni->ni_ic; 2059 struct ifnet *ifp = ic->ic_ifp; 2060 struct wpi_softc *sc = ifp->if_softc; 2061 2062 /* prevent management frames from being sent if we're not ready */ 2063 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2064 m_freem(m); 2065 ieee80211_free_node(ni); 2066 return ENETDOWN; 2067 } 2068 WPI_LOCK(sc); 2069 2070 /* management frames go into ring 0 */ 2071 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2072 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2073 m_freem(m); 2074 WPI_UNLOCK(sc); 2075 ieee80211_free_node(ni); 2076 return ENOBUFS; /* XXX */ 2077 } 2078 2079 ifp->if_opackets++; 2080 if (wpi_tx_data(sc, m, ni, 0) != 0) 2081 goto bad; 2082 sc->sc_tx_timer = 5; 2083 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2084 2085 WPI_UNLOCK(sc); 2086 return 0; 2087bad: 2088 ifp->if_oerrors++; 2089 WPI_UNLOCK(sc); 2090 ieee80211_free_node(ni); 2091 return EIO; /* XXX */ 2092} 2093 2094static int 2095wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2096{ 2097 struct wpi_softc *sc = ifp->if_softc; 2098 struct ieee80211com *ic = ifp->if_l2com; 2099 struct ifreq *ifr = (struct ifreq *) data; 2100 int error = 0, startall = 0; 2101 2102 switch (cmd) { 2103 case SIOCSIFFLAGS: 2104 WPI_LOCK(sc); 2105 if ((ifp->if_flags & IFF_UP)) { 2106 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2107 wpi_init_locked(sc, 0); 2108 startall = 1; 2109 } 2110 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2111 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2112 wpi_stop_locked(sc); 2113 WPI_UNLOCK(sc); 2114 if (startall) 2115 ieee80211_start_all(ic); 2116 break; 2117 case SIOCGIFMEDIA: 2118 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2119 break; 2120 case SIOCGIFADDR: 2121 error = ether_ioctl(ifp, cmd, data); 2122 break; 2123 default: 2124 error = EINVAL; 2125 break; 2126 } 2127 return error; 2128} 2129 2130/* 2131 * Extract various information from EEPROM. 2132 */ 2133static void 2134wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2135{ 2136 int i; 2137 2138 /* read the hardware capabilities, revision and SKU type */ 2139 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2140 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2141 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2142 2143 /* read the regulatory domain */ 2144 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2145 2146 /* read in the hw MAC address */ 2147 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2148 2149 /* read the list of authorized channels */ 2150 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2151 wpi_read_eeprom_channels(sc,i); 2152 2153 /* read the power level calibration info for each group */ 2154 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2155 wpi_read_eeprom_group(sc,i); 2156} 2157 2158/* 2159 * Send a command to the firmware. 2160 */ 2161static int 2162wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2163{ 2164 struct wpi_tx_ring *ring = &sc->cmdq; 2165 struct wpi_tx_desc *desc; 2166 struct wpi_tx_cmd *cmd; 2167 2168#ifdef WPI_DEBUG 2169 if (!async) { 2170 WPI_LOCK_ASSERT(sc); 2171 } 2172#endif 2173 2174 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2175 async)); 2176 2177 if (sc->flags & WPI_FLAG_BUSY) { 2178 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2179 __func__, code); 2180 return EAGAIN; 2181 } 2182 sc->flags|= WPI_FLAG_BUSY; 2183 2184 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2185 code, size)); 2186 2187 desc = &ring->desc[ring->cur]; 2188 cmd = &ring->cmd[ring->cur]; 2189 2190 cmd->code = code; 2191 cmd->flags = 0; 2192 cmd->qid = ring->qid; 2193 cmd->idx = ring->cur; 2194 memcpy(cmd->data, buf, size); 2195 2196 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2197 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2198 ring->cur * sizeof (struct wpi_tx_cmd)); 2199 desc->segs[0].len = htole32(4 + size); 2200 2201 /* kick cmd ring */ 2202 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2203 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2204 2205 if (async) { 2206 sc->flags &= ~ WPI_FLAG_BUSY; 2207 return 0; 2208 } 2209 2210 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2211} 2212 2213static int 2214wpi_wme_update(struct ieee80211com *ic) 2215{ 2216#define WPI_EXP2(v) htole16((1 << (v)) - 1) 2217#define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2218 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2219 const struct wmeParams *wmep; 2220 struct wpi_wme_setup wme; 2221 int ac; 2222 2223 /* don't override default WME values if WME is not actually enabled */ 2224 if (!(ic->ic_flags & IEEE80211_F_WME)) 2225 return 0; 2226 2227 wme.flags = 0; 2228 for (ac = 0; ac < WME_NUM_AC; ac++) { 2229 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2230 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2231 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2232 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2233 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2234 2235 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2236 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2237 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2238 } 2239 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2240#undef WPI_USEC 2241#undef WPI_EXP2 2242} 2243 2244/* 2245 * Configure h/w multi-rate retries. 2246 */ 2247static int 2248wpi_mrr_setup(struct wpi_softc *sc) 2249{ 2250 struct ifnet *ifp = sc->sc_ifp; 2251 struct ieee80211com *ic = ifp->if_l2com; 2252 struct wpi_mrr_setup mrr; 2253 int i, error; 2254 2255 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2256 2257 /* CCK rates (not used with 802.11a) */ 2258 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2259 mrr.rates[i].flags = 0; 2260 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2261 /* fallback to the immediate lower CCK rate (if any) */ 2262 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2263 /* try one time at this rate before falling back to "next" */ 2264 mrr.rates[i].ntries = 1; 2265 } 2266 2267 /* OFDM rates (not used with 802.11b) */ 2268 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2269 mrr.rates[i].flags = 0; 2270 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2271 /* fallback to the immediate lower OFDM rate (if any) */ 2272 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2273 mrr.rates[i].next = (i == WPI_OFDM6) ? 2274 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2275 WPI_OFDM6 : WPI_CCK2) : 2276 i - 1; 2277 /* try one time at this rate before falling back to "next" */ 2278 mrr.rates[i].ntries = 1; 2279 } 2280 2281 /* setup MRR for control frames */ 2282 mrr.which = htole32(WPI_MRR_CTL); 2283 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2284 if (error != 0) { 2285 device_printf(sc->sc_dev, 2286 "could not setup MRR for control frames\n"); 2287 return error; 2288 } 2289 2290 /* setup MRR for data frames */ 2291 mrr.which = htole32(WPI_MRR_DATA); 2292 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2293 if (error != 0) { 2294 device_printf(sc->sc_dev, 2295 "could not setup MRR for data frames\n"); 2296 return error; 2297 } 2298 2299 return 0; 2300} 2301 2302static void 2303wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2304{ 2305 struct wpi_cmd_led led; 2306 2307 led.which = which; 2308 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2309 led.off = off; 2310 led.on = on; 2311 2312 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2313} 2314 2315static void 2316wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2317{ 2318 struct wpi_cmd_tsf tsf; 2319 uint64_t val, mod; 2320 2321 memset(&tsf, 0, sizeof tsf); 2322 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2323 tsf.bintval = htole16(ni->ni_intval); 2324 tsf.lintval = htole16(10); 2325 2326 /* compute remaining time until next beacon */ 2327 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2328 mod = le64toh(tsf.tstamp) % val; 2329 tsf.binitval = htole32((uint32_t)(val - mod)); 2330 2331 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2332 device_printf(sc->sc_dev, "could not enable TSF\n"); 2333} 2334 2335#if 0 2336/* 2337 * Build a beacon frame that the firmware will broadcast periodically in 2338 * IBSS or HostAP modes. 2339 */ 2340static int 2341wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2342{ 2343 struct ifnet *ifp = sc->sc_ifp; 2344 struct ieee80211com *ic = ifp->if_l2com; 2345 struct wpi_tx_ring *ring = &sc->cmdq; 2346 struct wpi_tx_desc *desc; 2347 struct wpi_tx_data *data; 2348 struct wpi_tx_cmd *cmd; 2349 struct wpi_cmd_beacon *bcn; 2350 struct ieee80211_beacon_offsets bo; 2351 struct mbuf *m0; 2352 bus_addr_t physaddr; 2353 int error; 2354 2355 desc = &ring->desc[ring->cur]; 2356 data = &ring->data[ring->cur]; 2357 2358 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2359 if (m0 == NULL) { 2360 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2361 return ENOMEM; 2362 } 2363 2364 cmd = &ring->cmd[ring->cur]; 2365 cmd->code = WPI_CMD_SET_BEACON; 2366 cmd->flags = 0; 2367 cmd->qid = ring->qid; 2368 cmd->idx = ring->cur; 2369 2370 bcn = (struct wpi_cmd_beacon *)cmd->data; 2371 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2372 bcn->id = WPI_ID_BROADCAST; 2373 bcn->ofdm_mask = 0xff; 2374 bcn->cck_mask = 0x0f; 2375 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2376 bcn->len = htole16(m0->m_pkthdr.len); 2377 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2378 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2379 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2380 2381 /* save and trim IEEE802.11 header */ 2382 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2383 m_adj(m0, sizeof (struct ieee80211_frame)); 2384 2385 /* assume beacon frame is contiguous */ 2386 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2387 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2388 if (error != 0) { 2389 device_printf(sc->sc_dev, "could not map beacon\n"); 2390 m_freem(m0); 2391 return error; 2392 } 2393 2394 data->m = m0; 2395 2396 /* first scatter/gather segment is used by the beacon command */ 2397 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2398 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2399 ring->cur * sizeof (struct wpi_tx_cmd)); 2400 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2401 desc->segs[1].addr = htole32(physaddr); 2402 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2403 2404 /* kick cmd ring */ 2405 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2406 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2407 2408 return 0; 2409} 2410#endif 2411 2412static int 2413wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2414{ 2415 struct ieee80211com *ic = vap->iv_ic; 2416 struct ieee80211_node *ni = vap->iv_bss; 2417 struct wpi_node_info node; 2418 int error; 2419 2420 2421 /* update adapter's configuration */ 2422 sc->config.associd = 0; 2423 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2424 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2425 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2426 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2427 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2428 WPI_CONFIG_24GHZ); 2429 } 2430 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2431 sc->config.cck_mask = 0; 2432 sc->config.ofdm_mask = 0x15; 2433 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2434 sc->config.cck_mask = 0x03; 2435 sc->config.ofdm_mask = 0; 2436 } else { 2437 /* XXX assume 802.11b/g */ 2438 sc->config.cck_mask = 0x0f; 2439 sc->config.ofdm_mask = 0x15; 2440 } 2441 2442 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2443 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2444 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2445 sizeof (struct wpi_config), 1); 2446 if (error != 0) { 2447 device_printf(sc->sc_dev, "could not configure\n"); 2448 return error; 2449 } 2450 2451 /* configuration has changed, set Tx power accordingly */ 2452 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2453 device_printf(sc->sc_dev, "could not set Tx power\n"); 2454 return error; 2455 } 2456 2457 /* add default node */ 2458 memset(&node, 0, sizeof node); 2459 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2460 node.id = WPI_ID_BSS; 2461 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2462 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2463 node.action = htole32(WPI_ACTION_SET_RATE); 2464 node.antenna = WPI_ANTENNA_BOTH; 2465 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2466 if (error != 0) 2467 device_printf(sc->sc_dev, "could not add BSS node\n"); 2468 2469 return (error); 2470} 2471 2472static int 2473wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2474{ 2475 struct ieee80211com *ic = vap->iv_ic; 2476 struct ieee80211_node *ni = vap->iv_bss; 2477 int error; 2478 2479 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2480 /* link LED blinks while monitoring */ 2481 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2482 return 0; 2483 } 2484 2485 wpi_enable_tsf(sc, ni); 2486 2487 /* update adapter's configuration */ 2488 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2489 /* short preamble/slot time are negotiated when associating */ 2490 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2491 WPI_CONFIG_SHSLOT); 2492 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2493 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2494 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2495 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2496 sc->config.filter |= htole32(WPI_FILTER_BSS); 2497 2498 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2499 2500 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2501 sc->config.flags)); 2502 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2503 wpi_config), 1); 2504 if (error != 0) { 2505 device_printf(sc->sc_dev, "could not update configuration\n"); 2506 return error; 2507 } 2508 2509 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2510 if (error != 0) { 2511 device_printf(sc->sc_dev, "could set txpower\n"); 2512 return error; 2513 } 2514 2515 /* link LED always on while associated */ 2516 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2517 2518 /* start automatic rate control timer */ 2519 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2520 2521 return (error); 2522} 2523 2524/* 2525 * Send a scan request to the firmware. Since this command is huge, we map it 2526 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2527 * much of this code is similar to that in wpi_cmd but because we must manually 2528 * construct the probe & channels, we duplicate what's needed here. XXX In the 2529 * future, this function should be modified to use wpi_cmd to help cleanup the 2530 * code base. 2531 */ 2532static int 2533wpi_scan(struct wpi_softc *sc) 2534{ 2535 struct ifnet *ifp = sc->sc_ifp; 2536 struct ieee80211com *ic = ifp->if_l2com; 2537 struct ieee80211_scan_state *ss = ic->ic_scan; 2538 struct wpi_tx_ring *ring = &sc->cmdq; 2539 struct wpi_tx_desc *desc; 2540 struct wpi_tx_data *data; 2541 struct wpi_tx_cmd *cmd; 2542 struct wpi_scan_hdr *hdr; 2543 struct wpi_scan_chan *chan; 2544 struct ieee80211_frame *wh; 2545 struct ieee80211_rateset *rs; 2546 struct ieee80211_channel *c; 2547 enum ieee80211_phymode mode; 2548 uint8_t *frm; 2549 int nrates, pktlen, error, i, nssid; 2550 bus_addr_t physaddr; 2551 2552 desc = &ring->desc[ring->cur]; 2553 data = &ring->data[ring->cur]; 2554 2555 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2556 if (data->m == NULL) { 2557 device_printf(sc->sc_dev, 2558 "could not allocate mbuf for scan command\n"); 2559 return ENOMEM; 2560 } 2561 2562 cmd = mtod(data->m, struct wpi_tx_cmd *); 2563 cmd->code = WPI_CMD_SCAN; 2564 cmd->flags = 0; 2565 cmd->qid = ring->qid; 2566 cmd->idx = ring->cur; 2567 2568 hdr = (struct wpi_scan_hdr *)cmd->data; 2569 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2570 2571 /* 2572 * Move to the next channel if no packets are received within 5 msecs 2573 * after sending the probe request (this helps to reduce the duration 2574 * of active scans). 2575 */ 2576 hdr->quiet = htole16(5); 2577 hdr->threshold = htole16(1); 2578 2579 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2580 /* send probe requests at 6Mbps */ 2581 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2582 2583 /* Enable crc checking */ 2584 hdr->promotion = htole16(1); 2585 } else { 2586 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2587 /* send probe requests at 1Mbps */ 2588 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2589 } 2590 hdr->tx.id = WPI_ID_BROADCAST; 2591 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2592 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2593 2594 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2595 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2596 for (i = 0; i < nssid; i++) { 2597 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2598 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2599 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2600 hdr->scan_essids[i].esslen); 2601#ifdef WPI_DEBUG 2602 if (wpi_debug & WPI_DEBUG_SCANNING) { 2603 printf("Scanning Essid: "); 2604 ieee80211_print_essid(hdr->scan_essids[i].essid, 2605 hdr->scan_essids[i].esslen); 2606 printf("\n"); 2607 } 2608#endif 2609 } 2610 2611 /* 2612 * Build a probe request frame. Most of the following code is a 2613 * copy & paste of what is done in net80211. 2614 */ 2615 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2616 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2617 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2618 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2619 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2620 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2621 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2622 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2623 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2624 2625 frm = (uint8_t *)(wh + 1); 2626 2627 /* add essid IE, the hardware will fill this in for us */ 2628 *frm++ = IEEE80211_ELEMID_SSID; 2629 *frm++ = 0; 2630 2631 mode = ieee80211_chan2mode(ic->ic_curchan); 2632 rs = &ic->ic_sup_rates[mode]; 2633 2634 /* add supported rates IE */ 2635 *frm++ = IEEE80211_ELEMID_RATES; 2636 nrates = rs->rs_nrates; 2637 if (nrates > IEEE80211_RATE_SIZE) 2638 nrates = IEEE80211_RATE_SIZE; 2639 *frm++ = nrates; 2640 memcpy(frm, rs->rs_rates, nrates); 2641 frm += nrates; 2642 2643 /* add supported xrates IE */ 2644 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2645 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2646 *frm++ = IEEE80211_ELEMID_XRATES; 2647 *frm++ = nrates; 2648 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2649 frm += nrates; 2650 } 2651 2652 /* setup length of probe request */ 2653 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2654 2655 /* 2656 * Construct information about the channel that we 2657 * want to scan. The firmware expects this to be directly 2658 * after the scan probe request 2659 */ 2660 c = ic->ic_curchan; 2661 chan = (struct wpi_scan_chan *)frm; 2662 chan->chan = ieee80211_chan2ieee(ic, c); 2663 chan->flags = 0; 2664 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2665 chan->flags |= WPI_CHAN_ACTIVE; 2666 if (nssid != 0) 2667 chan->flags |= WPI_CHAN_DIRECT; 2668 } 2669 chan->gain_dsp = 0x6e; /* Default level */ 2670 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2671 chan->active = htole16(10); 2672 chan->passive = htole16(ss->ss_maxdwell); 2673 chan->gain_radio = 0x3b; 2674 } else { 2675 chan->active = htole16(20); 2676 chan->passive = htole16(ss->ss_maxdwell); 2677 chan->gain_radio = 0x28; 2678 } 2679 2680 DPRINTFN(WPI_DEBUG_SCANNING, 2681 ("Scanning %u Passive: %d\n", 2682 chan->chan, 2683 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2684 2685 hdr->nchan++; 2686 chan++; 2687 2688 frm += sizeof (struct wpi_scan_chan); 2689#if 0 2690 // XXX All Channels.... 2691 for (c = &ic->ic_channels[1]; 2692 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2693 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2694 continue; 2695 2696 chan->chan = ieee80211_chan2ieee(ic, c); 2697 chan->flags = 0; 2698 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2699 chan->flags |= WPI_CHAN_ACTIVE; 2700 if (ic->ic_des_ssid[0].len != 0) 2701 chan->flags |= WPI_CHAN_DIRECT; 2702 } 2703 chan->gain_dsp = 0x6e; /* Default level */ 2704 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2705 chan->active = htole16(10); 2706 chan->passive = htole16(110); 2707 chan->gain_radio = 0x3b; 2708 } else { 2709 chan->active = htole16(20); 2710 chan->passive = htole16(120); 2711 chan->gain_radio = 0x28; 2712 } 2713 2714 DPRINTFN(WPI_DEBUG_SCANNING, 2715 ("Scanning %u Passive: %d\n", 2716 chan->chan, 2717 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2718 2719 hdr->nchan++; 2720 chan++; 2721 2722 frm += sizeof (struct wpi_scan_chan); 2723 } 2724#endif 2725 2726 hdr->len = htole16(frm - (uint8_t *)hdr); 2727 pktlen = frm - (uint8_t *)cmd; 2728 2729 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2730 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2731 if (error != 0) { 2732 device_printf(sc->sc_dev, "could not map scan command\n"); 2733 m_freem(data->m); 2734 data->m = NULL; 2735 return error; 2736 } 2737 2738 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2739 desc->segs[0].addr = htole32(physaddr); 2740 desc->segs[0].len = htole32(pktlen); 2741 2742 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2743 BUS_DMASYNC_PREWRITE); 2744 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2745 2746 /* kick cmd ring */ 2747 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2748 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2749 2750 sc->sc_scan_timer = 5; 2751 return 0; /* will be notified async. of failure/success */ 2752} 2753 2754/** 2755 * Configure the card to listen to a particular channel, this transisions the 2756 * card in to being able to receive frames from remote devices. 2757 */ 2758static int 2759wpi_config(struct wpi_softc *sc) 2760{ 2761 struct ifnet *ifp = sc->sc_ifp; 2762 struct ieee80211com *ic = ifp->if_l2com; 2763 struct wpi_power power; 2764 struct wpi_bluetooth bluetooth; 2765 struct wpi_node_info node; 2766 int error; 2767 2768 /* set power mode */ 2769 memset(&power, 0, sizeof power); 2770 power.flags = htole32(WPI_POWER_CAM|0x8); 2771 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2772 if (error != 0) { 2773 device_printf(sc->sc_dev, "could not set power mode\n"); 2774 return error; 2775 } 2776 2777 /* configure bluetooth coexistence */ 2778 memset(&bluetooth, 0, sizeof bluetooth); 2779 bluetooth.flags = 3; 2780 bluetooth.lead = 0xaa; 2781 bluetooth.kill = 1; 2782 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2783 0); 2784 if (error != 0) { 2785 device_printf(sc->sc_dev, 2786 "could not configure bluetooth coexistence\n"); 2787 return error; 2788 } 2789 2790 /* configure adapter */ 2791 memset(&sc->config, 0, sizeof (struct wpi_config)); 2792 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2793 /*set default channel*/ 2794 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2795 sc->config.flags = htole32(WPI_CONFIG_TSF); 2796 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2797 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2798 WPI_CONFIG_24GHZ); 2799 } 2800 sc->config.filter = 0; 2801 switch (ic->ic_opmode) { 2802 case IEEE80211_M_STA: 2803 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2804 sc->config.mode = WPI_MODE_STA; 2805 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2806 break; 2807 case IEEE80211_M_IBSS: 2808 case IEEE80211_M_AHDEMO: 2809 sc->config.mode = WPI_MODE_IBSS; 2810 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2811 WPI_FILTER_MULTICAST); 2812 break; 2813 case IEEE80211_M_HOSTAP: 2814 sc->config.mode = WPI_MODE_HOSTAP; 2815 break; 2816 case IEEE80211_M_MONITOR: 2817 sc->config.mode = WPI_MODE_MONITOR; 2818 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2819 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2820 break; 2821 default: 2822 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2823 return EINVAL; 2824 } 2825 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2826 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2827 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2828 sizeof (struct wpi_config), 0); 2829 if (error != 0) { 2830 device_printf(sc->sc_dev, "configure command failed\n"); 2831 return error; 2832 } 2833 2834 /* configuration has changed, set Tx power accordingly */ 2835 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2836 device_printf(sc->sc_dev, "could not set Tx power\n"); 2837 return error; 2838 } 2839 2840 /* add broadcast node */ 2841 memset(&node, 0, sizeof node); 2842 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2843 node.id = WPI_ID_BROADCAST; 2844 node.rate = wpi_plcp_signal(2); 2845 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2846 if (error != 0) { 2847 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2848 return error; 2849 } 2850 2851 /* Setup rate scalling */ 2852 error = wpi_mrr_setup(sc); 2853 if (error != 0) { 2854 device_printf(sc->sc_dev, "could not setup MRR\n"); 2855 return error; 2856 } 2857 2858 return 0; 2859} 2860 2861static void 2862wpi_stop_master(struct wpi_softc *sc) 2863{ 2864 uint32_t tmp; 2865 int ntries; 2866 2867 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2868 2869 tmp = WPI_READ(sc, WPI_RESET); 2870 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2871 2872 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2873 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2874 return; /* already asleep */ 2875 2876 for (ntries = 0; ntries < 100; ntries++) { 2877 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2878 break; 2879 DELAY(10); 2880 } 2881 if (ntries == 100) { 2882 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2883 } 2884} 2885 2886static int 2887wpi_power_up(struct wpi_softc *sc) 2888{ 2889 uint32_t tmp; 2890 int ntries; 2891 2892 wpi_mem_lock(sc); 2893 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2894 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2895 wpi_mem_unlock(sc); 2896 2897 for (ntries = 0; ntries < 5000; ntries++) { 2898 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2899 break; 2900 DELAY(10); 2901 } 2902 if (ntries == 5000) { 2903 device_printf(sc->sc_dev, 2904 "timeout waiting for NIC to power up\n"); 2905 return ETIMEDOUT; 2906 } 2907 return 0; 2908} 2909 2910static int 2911wpi_reset(struct wpi_softc *sc) 2912{ 2913 uint32_t tmp; 2914 int ntries; 2915 2916 DPRINTFN(WPI_DEBUG_HW, 2917 ("Resetting the card - clearing any uploaded firmware\n")); 2918 2919 /* clear any pending interrupts */ 2920 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2921 2922 tmp = WPI_READ(sc, WPI_PLL_CTL); 2923 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2924 2925 tmp = WPI_READ(sc, WPI_CHICKEN); 2926 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2927 2928 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2929 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2930 2931 /* wait for clock stabilization */ 2932 for (ntries = 0; ntries < 25000; ntries++) { 2933 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2934 break; 2935 DELAY(10); 2936 } 2937 if (ntries == 25000) { 2938 device_printf(sc->sc_dev, 2939 "timeout waiting for clock stabilization\n"); 2940 return ETIMEDOUT; 2941 } 2942 2943 /* initialize EEPROM */ 2944 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2945 2946 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2947 device_printf(sc->sc_dev, "EEPROM not found\n"); 2948 return EIO; 2949 } 2950 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2951 2952 return 0; 2953} 2954 2955static void 2956wpi_hw_config(struct wpi_softc *sc) 2957{ 2958 uint32_t rev, hw; 2959 2960 /* voodoo from the Linux "driver".. */ 2961 hw = WPI_READ(sc, WPI_HWCONFIG); 2962 2963 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2964 if ((rev & 0xc0) == 0x40) 2965 hw |= WPI_HW_ALM_MB; 2966 else if (!(rev & 0x80)) 2967 hw |= WPI_HW_ALM_MM; 2968 2969 if (sc->cap == 0x80) 2970 hw |= WPI_HW_SKU_MRC; 2971 2972 hw &= ~WPI_HW_REV_D; 2973 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2974 hw |= WPI_HW_REV_D; 2975 2976 if (sc->type > 1) 2977 hw |= WPI_HW_TYPE_B; 2978 2979 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2980} 2981 2982static void 2983wpi_rfkill_resume(struct wpi_softc *sc) 2984{ 2985 struct ifnet *ifp = sc->sc_ifp; 2986 struct ieee80211com *ic = ifp->if_l2com; 2987 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2988 int ntries; 2989 2990 /* enable firmware again */ 2991 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 2992 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 2993 2994 /* wait for thermal sensors to calibrate */ 2995 for (ntries = 0; ntries < 1000; ntries++) { 2996 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 2997 break; 2998 DELAY(10); 2999 } 3000 3001 if (ntries == 1000) { 3002 device_printf(sc->sc_dev, 3003 "timeout waiting for thermal calibration\n"); 3004 WPI_UNLOCK(sc); 3005 return; 3006 } 3007 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3008 3009 if (wpi_config(sc) != 0) { 3010 device_printf(sc->sc_dev, "device config failed\n"); 3011 WPI_UNLOCK(sc); 3012 return; 3013 } 3014 3015 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3016 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3017 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3018 3019 if (vap != NULL) { 3020 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3021 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3022 ieee80211_beacon_miss(ic); 3023 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3024 } else 3025 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3026 } else { 3027 ieee80211_scan_next(vap); 3028 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3029 } 3030 } 3031 3032 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3033} 3034 3035static void 3036wpi_init_locked(struct wpi_softc *sc, int force) 3037{ 3038 struct ifnet *ifp = sc->sc_ifp; 3039 uint32_t tmp; 3040 int ntries, qid; 3041 3042 wpi_stop_locked(sc); 3043 (void)wpi_reset(sc); 3044 3045 wpi_mem_lock(sc); 3046 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3047 DELAY(20); 3048 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3049 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3050 wpi_mem_unlock(sc); 3051 3052 (void)wpi_power_up(sc); 3053 wpi_hw_config(sc); 3054 3055 /* init Rx ring */ 3056 wpi_mem_lock(sc); 3057 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3058 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3059 offsetof(struct wpi_shared, next)); 3060 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3061 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3062 wpi_mem_unlock(sc); 3063 3064 /* init Tx rings */ 3065 wpi_mem_lock(sc); 3066 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3067 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3068 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3069 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3070 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3071 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3072 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3073 3074 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3075 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3076 3077 for (qid = 0; qid < 6; qid++) { 3078 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3079 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3080 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3081 } 3082 wpi_mem_unlock(sc); 3083 3084 /* clear "radio off" and "disable command" bits (reversed logic) */ 3085 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3086 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3087 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3088 3089 /* clear any pending interrupts */ 3090 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3091 3092 /* enable interrupts */ 3093 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3094 3095 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3096 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3097 3098 if ((wpi_load_firmware(sc)) != 0) { 3099 device_printf(sc->sc_dev, 3100 "A problem occurred loading the firmware to the driver\n"); 3101 return; 3102 } 3103 3104 /* At this point the firmware is up and running. If the hardware 3105 * RF switch is turned off thermal calibration will fail, though 3106 * the card is still happy to continue to accept commands, catch 3107 * this case and schedule a task to watch for it to be turned on. 3108 */ 3109 wpi_mem_lock(sc); 3110 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3111 wpi_mem_unlock(sc); 3112 3113 if (!(tmp & 0x1)) { 3114 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3115 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3116 goto out; 3117 } 3118 3119 /* wait for thermal sensors to calibrate */ 3120 for (ntries = 0; ntries < 1000; ntries++) { 3121 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3122 break; 3123 DELAY(10); 3124 } 3125 3126 if (ntries == 1000) { 3127 device_printf(sc->sc_dev, 3128 "timeout waiting for thermal sensors calibration\n"); 3129 return; 3130 } 3131 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3132 3133 if (wpi_config(sc) != 0) { 3134 device_printf(sc->sc_dev, "device config failed\n"); 3135 return; 3136 } 3137 3138 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3139 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3140out: 3141 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3142} 3143 3144static void 3145wpi_init(void *arg) 3146{ 3147 struct wpi_softc *sc = arg; 3148 struct ifnet *ifp = sc->sc_ifp; 3149 struct ieee80211com *ic = ifp->if_l2com; 3150 3151 WPI_LOCK(sc); 3152 wpi_init_locked(sc, 0); 3153 WPI_UNLOCK(sc); 3154 3155 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3156 ieee80211_start_all(ic); /* start all vaps */ 3157} 3158 3159static void 3160wpi_stop_locked(struct wpi_softc *sc) 3161{ 3162 struct ifnet *ifp = sc->sc_ifp; 3163 uint32_t tmp; 3164 int ac; 3165 3166 sc->sc_tx_timer = 0; 3167 sc->sc_scan_timer = 0; 3168 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3169 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3170 callout_stop(&sc->watchdog_to); 3171 callout_stop(&sc->calib_to); 3172 3173 3174 /* disable interrupts */ 3175 WPI_WRITE(sc, WPI_MASK, 0); 3176 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3177 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3178 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3179 3180 wpi_mem_lock(sc); 3181 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3182 wpi_mem_unlock(sc); 3183 3184 /* reset all Tx rings */ 3185 for (ac = 0; ac < 4; ac++) 3186 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3187 wpi_reset_tx_ring(sc, &sc->cmdq); 3188 3189 /* reset Rx ring */ 3190 wpi_reset_rx_ring(sc, &sc->rxq); 3191 3192 wpi_mem_lock(sc); 3193 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3194 wpi_mem_unlock(sc); 3195 3196 DELAY(5); 3197 3198 wpi_stop_master(sc); 3199 3200 tmp = WPI_READ(sc, WPI_RESET); 3201 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3202 sc->flags &= ~WPI_FLAG_BUSY; 3203} 3204 3205static void 3206wpi_stop(struct wpi_softc *sc) 3207{ 3208 WPI_LOCK(sc); 3209 wpi_stop_locked(sc); 3210 WPI_UNLOCK(sc); 3211} 3212 3213static void 3214wpi_newassoc(struct ieee80211_node *ni, int isnew) 3215{ 3216 struct ieee80211vap *vap = ni->ni_vap; 3217 struct wpi_vap *wvp = WPI_VAP(vap); 3218 3219 ieee80211_amrr_node_init(&wvp->amrr, &WPI_NODE(ni)->amn, ni); 3220} 3221 3222static void 3223wpi_calib_timeout(void *arg) 3224{ 3225 struct wpi_softc *sc = arg; 3226 struct ifnet *ifp = sc->sc_ifp; 3227 struct ieee80211com *ic = ifp->if_l2com; 3228 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3229 int temp; 3230 3231 if (vap->iv_state != IEEE80211_S_RUN) 3232 return; 3233 3234 /* update sensor data */ 3235 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3236 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3237 3238 wpi_power_calibration(sc, temp); 3239 3240 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3241} 3242 3243/* 3244 * This function is called periodically (every 60 seconds) to adjust output 3245 * power to temperature changes. 3246 */ 3247static void 3248wpi_power_calibration(struct wpi_softc *sc, int temp) 3249{ 3250 struct ifnet *ifp = sc->sc_ifp; 3251 struct ieee80211com *ic = ifp->if_l2com; 3252 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3253 3254 /* sanity-check read value */ 3255 if (temp < -260 || temp > 25) { 3256 /* this can't be correct, ignore */ 3257 DPRINTFN(WPI_DEBUG_TEMP, 3258 ("out-of-range temperature reported: %d\n", temp)); 3259 return; 3260 } 3261 3262 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3263 3264 /* adjust Tx power if need be */ 3265 if (abs(temp - sc->temp) <= 6) 3266 return; 3267 3268 sc->temp = temp; 3269 3270 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3271 /* just warn, too bad for the automatic calibration... */ 3272 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3273 } 3274} 3275 3276/** 3277 * Read the eeprom to find out what channels are valid for the given 3278 * band and update net80211 with what we find. 3279 */ 3280static void 3281wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3282{ 3283 struct ifnet *ifp = sc->sc_ifp; 3284 struct ieee80211com *ic = ifp->if_l2com; 3285 const struct wpi_chan_band *band = &wpi_bands[n]; 3286 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3287 struct ieee80211_channel *c; 3288 int chan, i, passive; 3289 3290 wpi_read_prom_data(sc, band->addr, channels, 3291 band->nchan * sizeof (struct wpi_eeprom_chan)); 3292 3293 for (i = 0; i < band->nchan; i++) { 3294 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3295 DPRINTFN(WPI_DEBUG_HW, 3296 ("Channel Not Valid: %d, band %d\n", 3297 band->chan[i],n)); 3298 continue; 3299 } 3300 3301 passive = 0; 3302 chan = band->chan[i]; 3303 c = &ic->ic_channels[ic->ic_nchans++]; 3304 3305 /* is active scan allowed on this channel? */ 3306 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3307 passive = IEEE80211_CHAN_PASSIVE; 3308 } 3309 3310 if (n == 0) { /* 2GHz band */ 3311 c->ic_ieee = chan; 3312 c->ic_freq = ieee80211_ieee2mhz(chan, 3313 IEEE80211_CHAN_2GHZ); 3314 c->ic_flags = IEEE80211_CHAN_B | passive; 3315 3316 c = &ic->ic_channels[ic->ic_nchans++]; 3317 c->ic_ieee = chan; 3318 c->ic_freq = ieee80211_ieee2mhz(chan, 3319 IEEE80211_CHAN_2GHZ); 3320 c->ic_flags = IEEE80211_CHAN_G | passive; 3321 3322 } else { /* 5GHz band */ 3323 /* 3324 * Some 3945ABG adapters support channels 7, 8, 11 3325 * and 12 in the 2GHz *and* 5GHz bands. 3326 * Because of limitations in our net80211(9) stack, 3327 * we can't support these channels in 5GHz band. 3328 * XXX not true; just need to map to proper frequency 3329 */ 3330 if (chan <= 14) 3331 continue; 3332 3333 c->ic_ieee = chan; 3334 c->ic_freq = ieee80211_ieee2mhz(chan, 3335 IEEE80211_CHAN_5GHZ); 3336 c->ic_flags = IEEE80211_CHAN_A | passive; 3337 } 3338 3339 /* save maximum allowed power for this channel */ 3340 sc->maxpwr[chan] = channels[i].maxpwr; 3341 3342#if 0 3343 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3344 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3345 //ic->ic_channels[chan].ic_minpower... 3346 //ic->ic_channels[chan].ic_maxregtxpower... 3347#endif 3348 3349 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3350 " passive=%d, offset %d\n", chan, c->ic_freq, 3351 channels[i].flags, sc->maxpwr[chan], 3352 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3353 ic->ic_nchans)); 3354 } 3355} 3356 3357static void 3358wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3359{ 3360 struct wpi_power_group *group = &sc->groups[n]; 3361 struct wpi_eeprom_group rgroup; 3362 int i; 3363 3364 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3365 sizeof rgroup); 3366 3367 /* save power group information */ 3368 group->chan = rgroup.chan; 3369 group->maxpwr = rgroup.maxpwr; 3370 /* temperature at which the samples were taken */ 3371 group->temp = (int16_t)le16toh(rgroup.temp); 3372 3373 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3374 group->chan, group->maxpwr, group->temp)); 3375 3376 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3377 group->samples[i].index = rgroup.samples[i].index; 3378 group->samples[i].power = rgroup.samples[i].power; 3379 3380 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3381 group->samples[i].index, group->samples[i].power)); 3382 } 3383} 3384 3385/* 3386 * Update Tx power to match what is defined for channel `c'. 3387 */ 3388static int 3389wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3390{ 3391 struct ifnet *ifp = sc->sc_ifp; 3392 struct ieee80211com *ic = ifp->if_l2com; 3393 struct wpi_power_group *group; 3394 struct wpi_cmd_txpower txpower; 3395 u_int chan; 3396 int i; 3397 3398 /* get channel number */ 3399 chan = ieee80211_chan2ieee(ic, c); 3400 3401 /* find the power group to which this channel belongs */ 3402 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3403 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3404 if (chan <= group->chan) 3405 break; 3406 } else 3407 group = &sc->groups[0]; 3408 3409 memset(&txpower, 0, sizeof txpower); 3410 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3411 txpower.channel = htole16(chan); 3412 3413 /* set Tx power for all OFDM and CCK rates */ 3414 for (i = 0; i <= 11 ; i++) { 3415 /* retrieve Tx power for this channel/rate combination */ 3416 int idx = wpi_get_power_index(sc, group, c, 3417 wpi_ridx_to_rate[i]); 3418 3419 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3420 3421 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3422 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3423 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3424 } else { 3425 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3426 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3427 } 3428 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3429 chan, wpi_ridx_to_rate[i], idx)); 3430 } 3431 3432 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3433} 3434 3435/* 3436 * Determine Tx power index for a given channel/rate combination. 3437 * This takes into account the regulatory information from EEPROM and the 3438 * current temperature. 3439 */ 3440static int 3441wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3442 struct ieee80211_channel *c, int rate) 3443{ 3444/* fixed-point arithmetic division using a n-bit fractional part */ 3445#define fdivround(a, b, n) \ 3446 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3447 3448/* linear interpolation */ 3449#define interpolate(x, x1, y1, x2, y2, n) \ 3450 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3451 3452 struct ifnet *ifp = sc->sc_ifp; 3453 struct ieee80211com *ic = ifp->if_l2com; 3454 struct wpi_power_sample *sample; 3455 int pwr, idx; 3456 u_int chan; 3457 3458 /* get channel number */ 3459 chan = ieee80211_chan2ieee(ic, c); 3460 3461 /* default power is group's maximum power - 3dB */ 3462 pwr = group->maxpwr / 2; 3463 3464 /* decrease power for highest OFDM rates to reduce distortion */ 3465 switch (rate) { 3466 case 72: /* 36Mb/s */ 3467 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3468 break; 3469 case 96: /* 48Mb/s */ 3470 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3471 break; 3472 case 108: /* 54Mb/s */ 3473 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3474 break; 3475 } 3476 3477 /* never exceed channel's maximum allowed Tx power */ 3478 pwr = min(pwr, sc->maxpwr[chan]); 3479 3480 /* retrieve power index into gain tables from samples */ 3481 for (sample = group->samples; sample < &group->samples[3]; sample++) 3482 if (pwr > sample[1].power) 3483 break; 3484 /* fixed-point linear interpolation using a 19-bit fractional part */ 3485 idx = interpolate(pwr, sample[0].power, sample[0].index, 3486 sample[1].power, sample[1].index, 19); 3487 3488 /* 3489 * Adjust power index based on current temperature 3490 * - if colder than factory-calibrated: decreate output power 3491 * - if warmer than factory-calibrated: increase output power 3492 */ 3493 idx -= (sc->temp - group->temp) * 11 / 100; 3494 3495 /* decrease power for CCK rates (-5dB) */ 3496 if (!WPI_RATE_IS_OFDM(rate)) 3497 idx += 10; 3498 3499 /* keep power index in a valid range */ 3500 if (idx < 0) 3501 return 0; 3502 if (idx > WPI_MAX_PWR_INDEX) 3503 return WPI_MAX_PWR_INDEX; 3504 return idx; 3505 3506#undef interpolate 3507#undef fdivround 3508} 3509 3510/** 3511 * Called by net80211 framework to indicate that a scan 3512 * is starting. This function doesn't actually do the scan, 3513 * wpi_scan_curchan starts things off. This function is more 3514 * of an early warning from the framework we should get ready 3515 * for the scan. 3516 */ 3517static void 3518wpi_scan_start(struct ieee80211com *ic) 3519{ 3520 struct ifnet *ifp = ic->ic_ifp; 3521 struct wpi_softc *sc = ifp->if_softc; 3522 3523 WPI_LOCK(sc); 3524 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3525 WPI_UNLOCK(sc); 3526} 3527 3528/** 3529 * Called by the net80211 framework, indicates that the 3530 * scan has ended. If there is a scan in progress on the card 3531 * then it should be aborted. 3532 */ 3533static void 3534wpi_scan_end(struct ieee80211com *ic) 3535{ 3536 /* XXX ignore */ 3537} 3538 3539/** 3540 * Called by the net80211 framework to indicate to the driver 3541 * that the channel should be changed 3542 */ 3543static void 3544wpi_set_channel(struct ieee80211com *ic) 3545{ 3546 struct ifnet *ifp = ic->ic_ifp; 3547 struct wpi_softc *sc = ifp->if_softc; 3548 int error; 3549 3550 /* 3551 * Only need to set the channel in Monitor mode. AP scanning and auth 3552 * are already taken care of by their respective firmware commands. 3553 */ 3554 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3555 error = wpi_config(sc); 3556 if (error != 0) 3557 device_printf(sc->sc_dev, 3558 "error %d settting channel\n", error); 3559 } 3560} 3561 3562/** 3563 * Called by net80211 to indicate that we need to scan the current 3564 * channel. The channel is previously be set via the wpi_set_channel 3565 * callback. 3566 */ 3567static void 3568wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3569{ 3570 struct ieee80211vap *vap = ss->ss_vap; 3571 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3572 struct wpi_softc *sc = ifp->if_softc; 3573 3574 WPI_LOCK(sc); 3575 if (wpi_scan(sc)) 3576 ieee80211_cancel_scan(vap); 3577 WPI_UNLOCK(sc); 3578} 3579 3580/** 3581 * Called by the net80211 framework to indicate 3582 * the minimum dwell time has been met, terminate the scan. 3583 * We don't actually terminate the scan as the firmware will notify 3584 * us when it's finished and we have no way to interrupt it. 3585 */ 3586static void 3587wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3588{ 3589 /* NB: don't try to abort scan; wait for firmware to finish */ 3590} 3591 3592static void 3593wpi_hwreset(void *arg, int pending) 3594{ 3595 struct wpi_softc *sc = arg; 3596 3597 WPI_LOCK(sc); 3598 wpi_init_locked(sc, 0); 3599 WPI_UNLOCK(sc); 3600} 3601 3602static void 3603wpi_rfreset(void *arg, int pending) 3604{ 3605 struct wpi_softc *sc = arg; 3606 3607 WPI_LOCK(sc); 3608 wpi_rfkill_resume(sc); 3609 WPI_UNLOCK(sc); 3610} 3611 3612/* 3613 * Allocate DMA-safe memory for firmware transfer. 3614 */ 3615static int 3616wpi_alloc_fwmem(struct wpi_softc *sc) 3617{ 3618 /* allocate enough contiguous space to store text and data */ 3619 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3620 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3621 BUS_DMA_NOWAIT); 3622} 3623 3624static void 3625wpi_free_fwmem(struct wpi_softc *sc) 3626{ 3627 wpi_dma_contig_free(&sc->fw_dma); 3628} 3629 3630/** 3631 * Called every second, wpi_watchdog used by the watch dog timer 3632 * to check that the card is still alive 3633 */ 3634static void 3635wpi_watchdog(void *arg) 3636{ 3637 struct wpi_softc *sc = arg; 3638 struct ifnet *ifp = sc->sc_ifp; 3639 struct ieee80211com *ic = ifp->if_l2com; 3640 uint32_t tmp; 3641 3642 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3643 3644 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3645 /* No need to lock firmware memory */ 3646 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3647 3648 if ((tmp & 0x1) == 0) { 3649 /* Radio kill switch is still off */ 3650 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3651 return; 3652 } 3653 3654 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3655 ieee80211_runtask(ic, &sc->sc_radiotask); 3656 return; 3657 } 3658 3659 if (sc->sc_tx_timer > 0) { 3660 if (--sc->sc_tx_timer == 0) { 3661 device_printf(sc->sc_dev,"device timeout\n"); 3662 ifp->if_oerrors++; 3663 ieee80211_runtask(ic, &sc->sc_restarttask); 3664 } 3665 } 3666 if (sc->sc_scan_timer > 0) { 3667 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3668 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3669 device_printf(sc->sc_dev,"scan timeout\n"); 3670 ieee80211_cancel_scan(vap); 3671 ieee80211_runtask(ic, &sc->sc_restarttask); 3672 } 3673 } 3674 3675 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3676 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3677} 3678 3679#ifdef WPI_DEBUG 3680static const char *wpi_cmd_str(int cmd) 3681{ 3682 switch (cmd) { 3683 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3684 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3685 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3686 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3687 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3688 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3689 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3690 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3691 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3692 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3693 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3694 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3695 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3696 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3697 3698 default: 3699 KASSERT(1, ("Unknown Command: %d\n", cmd)); 3700 return "UNKNOWN CMD"; /* Make the compiler happy */ 3701 } 3702} 3703#endif 3704 3705MODULE_DEPEND(wpi, pci, 1, 1, 1); 3706MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3707MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3708MODULE_DEPEND(wpi, wlan_amrr, 1, 1, 1); 3709