if_wpi.c revision 178957
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 178957 2008-05-12 00:15:30Z sam $"); 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 112enum { 113 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ 114 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ 115 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ 116 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ 117 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ 118 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ 119 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ 120 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ 121 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ 122 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ 123 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ 124 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ 125 WPI_DEBUG_ANY = 0xffffffff 126}; 127 128int wpi_debug = 0; 129SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level"); 130 131#else 132#define DPRINTF(x) 133#define DPRINTFN(n, x) 134#endif 135 136struct wpi_ident { 137 uint16_t vendor; 138 uint16_t device; 139 uint16_t subdevice; 140 const char *name; 141}; 142 143static const struct wpi_ident wpi_ident_table[] = { 144 /* The below entries support ABG regardless of the subid */ 145 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 146 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 147 /* The below entries only support BG */ 148 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945AB" }, 149 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945AB" }, 150 { 0x8086, 0x4222, 0x1014, "Intel(R) PRO/Wireless 3945AB" }, 151 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945AB" }, 152 { 0, 0, 0, NULL } 153}; 154 155static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 156 const char name[IFNAMSIZ], int unit, int opmode, 157 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 158 const uint8_t mac[IEEE80211_ADDR_LEN]); 159static void wpi_vap_delete(struct ieee80211vap *); 160static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 161 void **, bus_size_t, bus_size_t, int); 162static void wpi_dma_contig_free(struct wpi_dma_info *); 163static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 164static int wpi_alloc_shared(struct wpi_softc *); 165static void wpi_free_shared(struct wpi_softc *); 166static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 167static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 168static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 169static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 170 int, int); 171static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 172static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 173static struct ieee80211_node *wpi_node_alloc(struct ieee80211_node_table *); 174static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 175static void wpi_mem_lock(struct wpi_softc *); 176static void wpi_mem_unlock(struct wpi_softc *); 177static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 178static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 179static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 180 const uint32_t *, int); 181static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 182static int wpi_alloc_fwmem(struct wpi_softc *); 183static void wpi_free_fwmem(struct wpi_softc *); 184static int wpi_load_firmware(struct wpi_softc *); 185static void wpi_unload_firmware(struct wpi_softc *); 186static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 187static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 188 struct wpi_rx_data *); 189static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 190static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 191static void wpi_notif_intr(struct wpi_softc *); 192static void wpi_intr(void *); 193static void wpi_ops(void *, int); 194static uint8_t wpi_plcp_signal(int); 195static int wpi_queue_cmd(struct wpi_softc *, int, int, int); 196static void wpi_watchdog(void *); 197static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 198 struct ieee80211_node *, int); 199static void wpi_start(struct ifnet *); 200static void wpi_start_locked(struct ifnet *); 201static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 202 const struct ieee80211_bpf_params *); 203static void wpi_scan_start(struct ieee80211com *); 204static void wpi_scan_end(struct ieee80211com *); 205static void wpi_set_channel(struct ieee80211com *); 206static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 207static void wpi_scan_mindwell(struct ieee80211_scan_state *); 208static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 209static void wpi_read_eeprom(struct wpi_softc *); 210static void wpi_read_eeprom_channels(struct wpi_softc *, int); 211static void wpi_read_eeprom_group(struct wpi_softc *, int); 212static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 213static int wpi_wme_update(struct ieee80211com *); 214static int wpi_mrr_setup(struct wpi_softc *); 215static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 216static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 217#if 0 218static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 219#endif 220static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 221static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 222static int wpi_scan(struct wpi_softc *); 223static int wpi_config(struct wpi_softc *); 224static void wpi_stop_master(struct wpi_softc *); 225static int wpi_power_up(struct wpi_softc *); 226static int wpi_reset(struct wpi_softc *); 227static void wpi_hw_config(struct wpi_softc *); 228static void wpi_init(void *); 229static void wpi_init_locked(struct wpi_softc *, int); 230static void wpi_stop(struct wpi_softc *); 231static void wpi_stop_locked(struct wpi_softc *); 232 233static void wpi_newassoc(struct ieee80211_node *, int); 234static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 235 int); 236static void wpi_calib_timeout(void *); 237static void wpi_power_calibration(struct wpi_softc *, int); 238static int wpi_get_power_index(struct wpi_softc *, 239 struct wpi_power_group *, struct ieee80211_channel *, int); 240static const char *wpi_cmd_str(int); 241static int wpi_probe(device_t); 242static int wpi_attach(device_t); 243static int wpi_detach(device_t); 244static int wpi_shutdown(device_t); 245static int wpi_suspend(device_t); 246static int wpi_resume(device_t); 247 248 249static device_method_t wpi_methods[] = { 250 /* Device interface */ 251 DEVMETHOD(device_probe, wpi_probe), 252 DEVMETHOD(device_attach, wpi_attach), 253 DEVMETHOD(device_detach, wpi_detach), 254 DEVMETHOD(device_shutdown, wpi_shutdown), 255 DEVMETHOD(device_suspend, wpi_suspend), 256 DEVMETHOD(device_resume, wpi_resume), 257 258 { 0, 0 } 259}; 260 261static driver_t wpi_driver = { 262 "wpi", 263 wpi_methods, 264 sizeof (struct wpi_softc) 265}; 266 267static devclass_t wpi_devclass; 268 269DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0); 270 271static const uint8_t wpi_ridx_to_plcp[] = { 272 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 273 /* R1-R4 (ral/ural is R4-R1) */ 274 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 275 /* CCK: device-dependent */ 276 10, 20, 55, 110 277}; 278static const uint8_t wpi_ridx_to_rate[] = { 279 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 280 2, 4, 11, 22 /*CCK */ 281}; 282 283 284static int 285wpi_probe(device_t dev) 286{ 287 const struct wpi_ident *ident; 288 289 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 290 if (pci_get_vendor(dev) == ident->vendor && 291 pci_get_device(dev) == ident->device) { 292 device_set_desc(dev, ident->name); 293 return 0; 294 } 295 } 296 return ENXIO; 297} 298 299/** 300 * Load the firmare image from disk to the allocated dma buffer. 301 * we also maintain the reference to the firmware pointer as there 302 * is times where we may need to reload the firmware but we are not 303 * in a context that can access the filesystem (ie taskq cause by restart) 304 * 305 * @return 0 on success, an errno on failure 306 */ 307static int 308wpi_load_firmware(struct wpi_softc *sc) 309{ 310 const struct firmware *fp; 311 struct wpi_dma_info *dma = &sc->fw_dma; 312 const struct wpi_firmware_hdr *hdr; 313 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 314 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 315 int error; 316 317 DPRINTFN(WPI_DEBUG_FIRMWARE, 318 ("Attempting Loading Firmware from wpi_fw module\n")); 319 320 WPI_UNLOCK(sc); 321 322 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 323 device_printf(sc->sc_dev, 324 "could not load firmware image 'wpifw'\n"); 325 error = ENOENT; 326 WPI_LOCK(sc); 327 goto fail; 328 } 329 330 fp = sc->fw_fp; 331 332 WPI_LOCK(sc); 333 334 /* Validate the firmware is minimum a particular version */ 335 if (fp->version < WPI_FW_MINVERSION) { 336 device_printf(sc->sc_dev, 337 "firmware version is too old. Need %d, got %d\n", 338 WPI_FW_MINVERSION, 339 fp->version); 340 error = ENXIO; 341 goto fail; 342 } 343 344 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 345 device_printf(sc->sc_dev, 346 "firmware file too short: %zu bytes\n", fp->datasize); 347 error = ENXIO; 348 goto fail; 349 } 350 351 hdr = (const struct wpi_firmware_hdr *)fp->data; 352 353 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 354 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 355 356 rtextsz = le32toh(hdr->rtextsz); 357 rdatasz = le32toh(hdr->rdatasz); 358 itextsz = le32toh(hdr->itextsz); 359 idatasz = le32toh(hdr->idatasz); 360 btextsz = le32toh(hdr->btextsz); 361 362 /* check that all firmware segments are present */ 363 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 364 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 365 device_printf(sc->sc_dev, 366 "firmware file too short: %zu bytes\n", fp->datasize); 367 error = ENXIO; /* XXX appropriate error code? */ 368 goto fail; 369 } 370 371 /* get pointers to firmware segments */ 372 rtext = (const uint8_t *)(hdr + 1); 373 rdata = rtext + rtextsz; 374 itext = rdata + rdatasz; 375 idata = itext + itextsz; 376 btext = idata + idatasz; 377 378 DPRINTFN(WPI_DEBUG_FIRMWARE, 379 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 380 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 381 (le32toh(hdr->version) & 0xff000000) >> 24, 382 (le32toh(hdr->version) & 0x00ff0000) >> 16, 383 (le32toh(hdr->version) & 0x0000ffff), 384 rtextsz, rdatasz, 385 itextsz, idatasz, btextsz)); 386 387 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 388 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 389 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 390 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 391 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 392 393 /* sanity checks */ 394 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 395 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 396 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 397 idatasz > WPI_FW_INIT_DATA_MAXSZ || 398 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 399 (btextsz & 3) != 0) { 400 device_printf(sc->sc_dev, "firmware invalid\n"); 401 error = EINVAL; 402 goto fail; 403 } 404 405 /* copy initialization images into pre-allocated DMA-safe memory */ 406 memcpy(dma->vaddr, idata, idatasz); 407 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 408 409 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 410 411 /* tell adapter where to find initialization images */ 412 wpi_mem_lock(sc); 413 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 414 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 415 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 416 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 417 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 418 wpi_mem_unlock(sc); 419 420 /* load firmware boot code */ 421 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 422 device_printf(sc->sc_dev, "Failed to load microcode\n"); 423 goto fail; 424 } 425 426 /* now press "execute" */ 427 WPI_WRITE(sc, WPI_RESET, 0); 428 429 /* wait at most one second for the first alive notification */ 430 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 431 device_printf(sc->sc_dev, 432 "timeout waiting for adapter to initialize\n"); 433 goto fail; 434 } 435 436 /* copy runtime images into pre-allocated DMA-sage memory */ 437 memcpy(dma->vaddr, rdata, rdatasz); 438 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 439 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 440 441 /* tell adapter where to find runtime images */ 442 wpi_mem_lock(sc); 443 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 444 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 445 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 446 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 447 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 448 wpi_mem_unlock(sc); 449 450 /* wait at most one second for the first alive notification */ 451 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 452 device_printf(sc->sc_dev, 453 "timeout waiting for adapter to initialize2\n"); 454 goto fail; 455 } 456 457 DPRINTFN(WPI_DEBUG_FIRMWARE, 458 ("Firmware loaded to driver successfully\n")); 459 return error; 460fail: 461 wpi_unload_firmware(sc); 462 return error; 463} 464 465/** 466 * Free the referenced firmware image 467 */ 468static void 469wpi_unload_firmware(struct wpi_softc *sc) 470{ 471 472 if (sc->fw_fp) { 473 WPI_UNLOCK(sc); 474 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 475 WPI_LOCK(sc); 476 sc->fw_fp = NULL; 477 } 478} 479 480static int 481wpi_attach(device_t dev) 482{ 483 struct wpi_softc *sc = device_get_softc(dev); 484 struct ifnet *ifp; 485 struct ieee80211com *ic; 486 int ac, error, supportsa = 1; 487 uint32_t tmp; 488 const struct wpi_ident *ident; 489 490 sc->sc_dev = dev; 491 492 if (bootverbose || wpi_debug) 493 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 494 495 /* 496 * Some card's only support 802.11b/g not a, check to see if 497 * this is one such card. A 0x0 in the subdevice table indicates 498 * the entire subdevice range is to be ignored. 499 */ 500 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 501 if (ident->subdevice && 502 pci_get_subdevice(dev) == ident->subdevice) { 503 supportsa = 0; 504 break; 505 } 506 } 507 508 /* 509 * Create the taskqueues used by the driver. Primarily 510 * sc_tq handles most the task 511 */ 512 sc->sc_tq = taskqueue_create("wpi_taskq", M_NOWAIT | M_ZERO, 513 taskqueue_thread_enqueue, &sc->sc_tq); 514 taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq", 515 device_get_nameunit(dev)); 516 517 /* Create the tasks that can be queued */ 518 TASK_INIT(&sc->sc_opstask, 0, wpi_ops, sc); 519 520 WPI_LOCK_INIT(sc); 521 WPI_CMD_LOCK_INIT(sc); 522 523 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 524 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 525 526 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 527 device_printf(dev, "chip is in D%d power mode " 528 "-- setting to D0\n", pci_get_powerstate(dev)); 529 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 530 } 531 532 /* disable the retry timeout register */ 533 pci_write_config(dev, 0x41, 0, 1); 534 535 /* enable bus-mastering */ 536 pci_enable_busmaster(dev); 537 538 sc->mem_rid = PCIR_BAR(0); 539 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 540 RF_ACTIVE); 541 if (sc->mem == NULL) { 542 device_printf(dev, "could not allocate memory resource\n"); 543 error = ENOMEM; 544 goto fail; 545 } 546 547 sc->sc_st = rman_get_bustag(sc->mem); 548 sc->sc_sh = rman_get_bushandle(sc->mem); 549 550 sc->irq_rid = 0; 551 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 552 RF_ACTIVE | RF_SHAREABLE); 553 if (sc->irq == NULL) { 554 device_printf(dev, "could not allocate interrupt resource\n"); 555 error = ENOMEM; 556 goto fail; 557 } 558 559 /* 560 * Allocate DMA memory for firmware transfers. 561 */ 562 if ((error = wpi_alloc_fwmem(sc)) != 0) { 563 printf(": could not allocate firmware memory\n"); 564 error = ENOMEM; 565 goto fail; 566 } 567 568 /* 569 * Put adapter into a known state. 570 */ 571 if ((error = wpi_reset(sc)) != 0) { 572 device_printf(dev, "could not reset adapter\n"); 573 goto fail; 574 } 575 576 wpi_mem_lock(sc); 577 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 578 if (bootverbose || wpi_debug) 579 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 580 581 wpi_mem_unlock(sc); 582 583 /* Allocate shared page */ 584 if ((error = wpi_alloc_shared(sc)) != 0) { 585 device_printf(dev, "could not allocate shared page\n"); 586 goto fail; 587 } 588 589 /* tx data queues - 4 for QoS purposes */ 590 for (ac = 0; ac < WME_NUM_AC; ac++) { 591 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 592 if (error != 0) { 593 device_printf(dev, "could not allocate Tx ring %d\n",ac); 594 goto fail; 595 } 596 } 597 598 /* command queue to talk to the card's firmware */ 599 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 600 if (error != 0) { 601 device_printf(dev, "could not allocate command ring\n"); 602 goto fail; 603 } 604 605 /* receive data queue */ 606 error = wpi_alloc_rx_ring(sc, &sc->rxq); 607 if (error != 0) { 608 device_printf(dev, "could not allocate Rx ring\n"); 609 goto fail; 610 } 611 612 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 613 if (ifp == NULL) { 614 device_printf(dev, "can not if_alloc()\n"); 615 error = ENOMEM; 616 goto fail; 617 } 618 ic = ifp->if_l2com; 619 620 ic->ic_ifp = ifp; 621 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 622 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 623 624 /* set device capabilities */ 625 ic->ic_caps = 626 IEEE80211_C_STA /* station mode supported */ 627 | IEEE80211_C_MONITOR /* monitor mode supported */ 628 | IEEE80211_C_TXPMGT /* tx power management */ 629 | IEEE80211_C_SHSLOT /* short slot time supported */ 630 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 631 | IEEE80211_C_WPA /* 802.11i */ 632/* XXX looks like WME is partly supported? */ 633#if 0 634 | IEEE80211_C_IBSS /* IBSS mode support */ 635 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 636 | IEEE80211_C_WME /* 802.11e */ 637 | IEEE80211_C_HOSTAP /* Host access point mode */ 638#endif 639 ; 640 641 /* 642 * Read in the eeprom and also setup the channels for 643 * net80211. We don't set the rates as net80211 does this for us 644 */ 645 wpi_read_eeprom(sc); 646 647 if (bootverbose || wpi_debug) { 648 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 649 device_printf(sc->sc_dev, "Hardware Type: %c\n", 650 sc->type > 1 ? 'B': '?'); 651 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 652 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 653 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 654 supportsa ? "does" : "does not"); 655 656 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 657 what sc->rev really represents - benjsc 20070615 */ 658 } 659 660 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 661 ifp->if_softc = sc; 662 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 663 ifp->if_init = wpi_init; 664 ifp->if_ioctl = wpi_ioctl; 665 ifp->if_start = wpi_start; 666 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 667 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 668 IFQ_SET_READY(&ifp->if_snd); 669 670 ieee80211_ifattach(ic); 671 /* override default methods */ 672 ic->ic_node_alloc = wpi_node_alloc; 673 ic->ic_newassoc = wpi_newassoc; 674 ic->ic_raw_xmit = wpi_raw_xmit; 675 ic->ic_wme.wme_update = wpi_wme_update; 676 ic->ic_scan_start = wpi_scan_start; 677 ic->ic_scan_end = wpi_scan_end; 678 ic->ic_set_channel = wpi_set_channel; 679 ic->ic_scan_curchan = wpi_scan_curchan; 680 ic->ic_scan_mindwell = wpi_scan_mindwell; 681 682 ic->ic_vap_create = wpi_vap_create; 683 ic->ic_vap_delete = wpi_vap_delete; 684 685 bpfattach(ifp, DLT_IEEE802_11_RADIO, 686 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap)); 687 688 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 689 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 690 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 691 692 sc->sc_txtap_len = sizeof sc->sc_txtap; 693 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 694 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 695 696 /* 697 * Hook our interrupt after all initialization is complete. 698 */ 699 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 700 NULL, wpi_intr, sc, &sc->sc_ih); 701 if (error != 0) { 702 device_printf(dev, "could not set up interrupt\n"); 703 goto fail; 704 } 705 706 if (bootverbose) 707 ieee80211_announce(ic); 708#ifdef XXX_DEBUG 709 ieee80211_announce_channels(ic); 710#endif 711 return 0; 712 713fail: wpi_detach(dev); 714 return ENXIO; 715} 716 717static int 718wpi_detach(device_t dev) 719{ 720 struct wpi_softc *sc = device_get_softc(dev); 721 struct ifnet *ifp = sc->sc_ifp; 722 struct ieee80211com *ic = ifp->if_l2com; 723 int ac; 724 725 if (ifp != NULL) { 726 wpi_stop(sc); 727 callout_drain(&sc->watchdog_to); 728 callout_drain(&sc->calib_to); 729 bpfdetach(ifp); 730 ieee80211_ifdetach(ic); 731 } 732 733 WPI_LOCK(sc); 734 if (sc->txq[0].data_dmat) { 735 for (ac = 0; ac < WME_NUM_AC; ac++) 736 wpi_free_tx_ring(sc, &sc->txq[ac]); 737 738 wpi_free_tx_ring(sc, &sc->cmdq); 739 wpi_free_rx_ring(sc, &sc->rxq); 740 wpi_free_shared(sc); 741 } 742 743 if (sc->fw_fp != NULL) { 744 wpi_unload_firmware(sc); 745 } 746 747 if (sc->fw_dma.tag) 748 wpi_free_fwmem(sc); 749 WPI_UNLOCK(sc); 750 751 if (sc->irq != NULL) { 752 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 753 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 754 } 755 756 if (sc->mem != NULL) 757 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 758 759 if (ifp != NULL) 760 if_free(ifp); 761 762 taskqueue_free(sc->sc_tq); 763 764 WPI_LOCK_DESTROY(sc); 765 WPI_CMD_LOCK_DESTROY(sc); 766 767 return 0; 768} 769 770static struct ieee80211vap * 771wpi_vap_create(struct ieee80211com *ic, 772 const char name[IFNAMSIZ], int unit, int opmode, int flags, 773 const uint8_t bssid[IEEE80211_ADDR_LEN], 774 const uint8_t mac[IEEE80211_ADDR_LEN]) 775{ 776 struct wpi_vap *wvp; 777 struct ieee80211vap *vap; 778 779 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 780 return NULL; 781 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 782 M_80211_VAP, M_NOWAIT | M_ZERO); 783 if (wvp == NULL) 784 return NULL; 785 vap = &wvp->vap; 786 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 787 /* override with driver methods */ 788 wvp->newstate = vap->iv_newstate; 789 vap->iv_newstate = wpi_newstate; 790 791 ieee80211_amrr_init(&wvp->amrr, vap, 792 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD, 793 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD, 794 500 /*ms*/); 795 796 /* complete setup */ 797 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 798 ic->ic_opmode = opmode; 799 return vap; 800} 801 802static void 803wpi_vap_delete(struct ieee80211vap *vap) 804{ 805 struct wpi_vap *wvp = WPI_VAP(vap); 806 807 ieee80211_amrr_cleanup(&wvp->amrr); 808 ieee80211_vap_detach(vap); 809 free(wvp, M_80211_VAP); 810} 811 812static void 813wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 814{ 815 if (error != 0) 816 return; 817 818 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 819 820 *(bus_addr_t *)arg = segs[0].ds_addr; 821} 822 823/* 824 * Allocates a contiguous block of dma memory of the requested size and 825 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 826 * allocations greater than 4096 may fail. Hence if the requested alignment is 827 * greater we allocate 'alignment' size extra memory and shift the vaddr and 828 * paddr after the dma load. This bypasses the problem at the cost of a little 829 * more memory. 830 */ 831static int 832wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 833 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 834{ 835 int error; 836 bus_size_t align; 837 bus_size_t reqsize; 838 839 DPRINTFN(WPI_DEBUG_DMA, 840 ("Size: %zd - alignment %zd\n", size, alignment)); 841 842 dma->size = size; 843 dma->tag = NULL; 844 845 if (alignment > 4096) { 846 align = PAGE_SIZE; 847 reqsize = size + alignment; 848 } else { 849 align = alignment; 850 reqsize = size; 851 } 852 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 853 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 854 NULL, NULL, reqsize, 855 1, reqsize, flags, 856 NULL, NULL, &dma->tag); 857 if (error != 0) { 858 device_printf(sc->sc_dev, 859 "could not create shared page DMA tag\n"); 860 goto fail; 861 } 862 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 863 flags | BUS_DMA_ZERO, &dma->map); 864 if (error != 0) { 865 device_printf(sc->sc_dev, 866 "could not allocate shared page DMA memory\n"); 867 goto fail; 868 } 869 870 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 871 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 872 873 /* Save the original pointers so we can free all the memory */ 874 dma->paddr = dma->paddr_start; 875 dma->vaddr = dma->vaddr_start; 876 877 /* 878 * Check the alignment and increment by 4096 until we get the 879 * requested alignment. Fail if can't obtain the alignment 880 * we requested. 881 */ 882 if ((dma->paddr & (alignment -1 )) != 0) { 883 int i; 884 885 for (i = 0; i < alignment / 4096; i++) { 886 if ((dma->paddr & (alignment - 1 )) == 0) 887 break; 888 dma->paddr += 4096; 889 dma->vaddr += 4096; 890 } 891 if (i == alignment / 4096) { 892 device_printf(sc->sc_dev, 893 "alignment requirement was not satisfied\n"); 894 goto fail; 895 } 896 } 897 898 if (error != 0) { 899 device_printf(sc->sc_dev, 900 "could not load shared page DMA map\n"); 901 goto fail; 902 } 903 904 if (kvap != NULL) 905 *kvap = dma->vaddr; 906 907 return 0; 908 909fail: 910 wpi_dma_contig_free(dma); 911 return error; 912} 913 914static void 915wpi_dma_contig_free(struct wpi_dma_info *dma) 916{ 917 if (dma->tag) { 918 if (dma->map != NULL) { 919 if (dma->paddr_start != 0) { 920 bus_dmamap_sync(dma->tag, dma->map, 921 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 922 bus_dmamap_unload(dma->tag, dma->map); 923 } 924 bus_dmamem_free(dma->tag, &dma->vaddr_start, dma->map); 925 } 926 bus_dma_tag_destroy(dma->tag); 927 } 928} 929 930/* 931 * Allocate a shared page between host and NIC. 932 */ 933static int 934wpi_alloc_shared(struct wpi_softc *sc) 935{ 936 int error; 937 938 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 939 (void **)&sc->shared, sizeof (struct wpi_shared), 940 PAGE_SIZE, 941 BUS_DMA_NOWAIT); 942 943 if (error != 0) { 944 device_printf(sc->sc_dev, 945 "could not allocate shared area DMA memory\n"); 946 } 947 948 return error; 949} 950 951static void 952wpi_free_shared(struct wpi_softc *sc) 953{ 954 wpi_dma_contig_free(&sc->shared_dma); 955} 956 957static int 958wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 959{ 960 961 int i, error; 962 963 ring->cur = 0; 964 965 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 966 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 967 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 968 969 if (error != 0) { 970 device_printf(sc->sc_dev, 971 "%s: could not allocate rx ring DMA memory, error %d\n", 972 __func__, error); 973 goto fail; 974 } 975 976 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 977 BUS_SPACE_MAXADDR_32BIT, 978 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 979 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 980 if (error != 0) { 981 device_printf(sc->sc_dev, 982 "%s: bus_dma_tag_create_failed, error %d\n", 983 __func__, error); 984 goto fail; 985 } 986 987 /* 988 * Setup Rx buffers. 989 */ 990 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 991 struct wpi_rx_data *data = &ring->data[i]; 992 struct mbuf *m; 993 bus_addr_t paddr; 994 995 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 996 if (error != 0) { 997 device_printf(sc->sc_dev, 998 "%s: bus_dmamap_create failed, error %d\n", 999 __func__, error); 1000 goto fail; 1001 } 1002 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1003 if (m == NULL) { 1004 device_printf(sc->sc_dev, 1005 "%s: could not allocate rx mbuf\n", __func__); 1006 error = ENOMEM; 1007 goto fail; 1008 } 1009 /* map page */ 1010 error = bus_dmamap_load(ring->data_dmat, data->map, 1011 mtod(m, caddr_t), MJUMPAGESIZE, 1012 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1013 if (error != 0 && error != EFBIG) { 1014 device_printf(sc->sc_dev, 1015 "%s: bus_dmamap_load failed, error %d\n", 1016 __func__, error); 1017 m_freem(m); 1018 error = ENOMEM; /* XXX unique code */ 1019 goto fail; 1020 } 1021 bus_dmamap_sync(ring->data_dmat, data->map, 1022 BUS_DMASYNC_PREWRITE); 1023 1024 data->m = m; 1025 ring->desc[i] = htole32(paddr); 1026 } 1027 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1028 BUS_DMASYNC_PREWRITE); 1029 return 0; 1030fail: 1031 wpi_free_rx_ring(sc, ring); 1032 return error; 1033} 1034 1035static void 1036wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1037{ 1038 int ntries; 1039 1040 wpi_mem_lock(sc); 1041 1042 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1043 1044 for (ntries = 0; ntries < 100; ntries++) { 1045 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1046 break; 1047 DELAY(10); 1048 } 1049 1050 wpi_mem_unlock(sc); 1051 1052#ifdef WPI_DEBUG 1053 if (ntries == 100) 1054 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1055#endif 1056 1057 ring->cur = 0; 1058} 1059 1060static void 1061wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1062{ 1063 int i; 1064 1065 wpi_dma_contig_free(&ring->desc_dma); 1066 1067 for (i = 0; i < WPI_RX_RING_COUNT; i++) 1068 if (ring->data[i].m != NULL) 1069 m_freem(ring->data[i].m); 1070} 1071 1072static int 1073wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1074 int qid) 1075{ 1076 struct wpi_tx_data *data; 1077 int i, error; 1078 1079 ring->qid = qid; 1080 ring->count = count; 1081 ring->queued = 0; 1082 ring->cur = 0; 1083 ring->data = NULL; 1084 1085 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1086 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1087 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1088 1089 if (error != 0) { 1090 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1091 goto fail; 1092 } 1093 1094 /* update shared page with ring's base address */ 1095 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1096 1097 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1098 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1099 BUS_DMA_NOWAIT); 1100 1101 if (error != 0) { 1102 device_printf(sc->sc_dev, 1103 "could not allocate tx command DMA memory\n"); 1104 goto fail; 1105 } 1106 1107 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1108 M_NOWAIT | M_ZERO); 1109 if (ring->data == NULL) { 1110 device_printf(sc->sc_dev, 1111 "could not allocate tx data slots\n"); 1112 goto fail; 1113 } 1114 1115 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1116 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1117 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1118 &ring->data_dmat); 1119 if (error != 0) { 1120 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1121 goto fail; 1122 } 1123 1124 for (i = 0; i < count; i++) { 1125 data = &ring->data[i]; 1126 1127 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1128 if (error != 0) { 1129 device_printf(sc->sc_dev, 1130 "could not create tx buf DMA map\n"); 1131 goto fail; 1132 } 1133 bus_dmamap_sync(ring->data_dmat, data->map, 1134 BUS_DMASYNC_PREWRITE); 1135 } 1136 1137 return 0; 1138 1139fail: 1140 wpi_free_tx_ring(sc, ring); 1141 return error; 1142} 1143 1144static void 1145wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1146{ 1147 struct wpi_tx_data *data; 1148 int i, ntries; 1149 1150 wpi_mem_lock(sc); 1151 1152 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1153 for (ntries = 0; ntries < 100; ntries++) { 1154 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1155 break; 1156 DELAY(10); 1157 } 1158#ifdef WPI_DEBUG 1159 if (ntries == 100) 1160 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1161 ring->qid); 1162#endif 1163 wpi_mem_unlock(sc); 1164 1165 for (i = 0; i < ring->count; i++) { 1166 data = &ring->data[i]; 1167 1168 if (data->m != NULL) { 1169 bus_dmamap_unload(ring->data_dmat, data->map); 1170 m_freem(data->m); 1171 data->m = NULL; 1172 } 1173 } 1174 1175 ring->queued = 0; 1176 ring->cur = 0; 1177} 1178 1179static void 1180wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1181{ 1182 struct wpi_tx_data *data; 1183 int i; 1184 1185 wpi_dma_contig_free(&ring->desc_dma); 1186 wpi_dma_contig_free(&ring->cmd_dma); 1187 1188 if (ring->data != NULL) { 1189 for (i = 0; i < ring->count; i++) { 1190 data = &ring->data[i]; 1191 1192 if (data->m != NULL) { 1193 bus_dmamap_sync(ring->data_dmat, data->map, 1194 BUS_DMASYNC_POSTWRITE); 1195 bus_dmamap_unload(ring->data_dmat, data->map); 1196 m_freem(data->m); 1197 data->m = NULL; 1198 } 1199 } 1200 free(ring->data, M_DEVBUF); 1201 } 1202 1203 if (ring->data_dmat != NULL) 1204 bus_dma_tag_destroy(ring->data_dmat); 1205} 1206 1207static int 1208wpi_shutdown(device_t dev) 1209{ 1210 struct wpi_softc *sc = device_get_softc(dev); 1211 1212 WPI_LOCK(sc); 1213 wpi_stop_locked(sc); 1214 wpi_unload_firmware(sc); 1215 WPI_UNLOCK(sc); 1216 1217 return 0; 1218} 1219 1220static int 1221wpi_suspend(device_t dev) 1222{ 1223 struct wpi_softc *sc = device_get_softc(dev); 1224 1225 wpi_stop(sc); 1226 return 0; 1227} 1228 1229static int 1230wpi_resume(device_t dev) 1231{ 1232 struct wpi_softc *sc = device_get_softc(dev); 1233 struct ifnet *ifp = sc->sc_ifp; 1234 1235 pci_write_config(dev, 0x41, 0, 1); 1236 1237 if (ifp->if_flags & IFF_UP) { 1238 wpi_init(ifp->if_softc); 1239 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1240 wpi_start(ifp); 1241 } 1242 return 0; 1243} 1244 1245/* ARGSUSED */ 1246static struct ieee80211_node * 1247wpi_node_alloc(struct ieee80211_node_table *ic) 1248{ 1249 struct wpi_node *wn; 1250 1251 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 1252 1253 return &wn->ni; 1254} 1255 1256/** 1257 * Called by net80211 when ever there is a change to 80211 state machine 1258 */ 1259static int 1260wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1261{ 1262 struct wpi_vap *wvp = WPI_VAP(vap); 1263 struct ieee80211com *ic = vap->iv_ic; 1264 struct ifnet *ifp = ic->ic_ifp; 1265 struct wpi_softc *sc = ifp->if_softc; 1266 int error; 1267 1268 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1269 ieee80211_state_name[vap->iv_state], 1270 ieee80211_state_name[nstate], sc->flags)); 1271 1272 if (nstate == IEEE80211_S_AUTH) { 1273 /* Delay the auth transition until we can update the firmware */ 1274 error = wpi_queue_cmd(sc, WPI_AUTH, arg, WPI_QUEUE_NORMAL); 1275 return (error != 0 ? error : EINPROGRESS); 1276 } 1277 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1278 /* set the association id first */ 1279 error = wpi_queue_cmd(sc, WPI_RUN, arg, WPI_QUEUE_NORMAL); 1280 return (error != 0 ? error : EINPROGRESS); 1281 } 1282 if (nstate == IEEE80211_S_RUN) { 1283 /* RUN -> RUN transition; just restart the timers */ 1284 wpi_calib_timeout(sc); 1285 /* XXX split out rate control timer */ 1286 } 1287 return wvp->newstate(vap, nstate, arg); 1288} 1289 1290/* 1291 * Grab exclusive access to NIC memory. 1292 */ 1293static void 1294wpi_mem_lock(struct wpi_softc *sc) 1295{ 1296 int ntries; 1297 uint32_t tmp; 1298 1299 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1300 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1301 1302 /* spin until we actually get the lock */ 1303 for (ntries = 0; ntries < 100; ntries++) { 1304 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1305 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1306 break; 1307 DELAY(10); 1308 } 1309 if (ntries == 100) 1310 device_printf(sc->sc_dev, "could not lock memory\n"); 1311} 1312 1313/* 1314 * Release lock on NIC memory. 1315 */ 1316static void 1317wpi_mem_unlock(struct wpi_softc *sc) 1318{ 1319 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1320 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1321} 1322 1323static uint32_t 1324wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1325{ 1326 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1327 return WPI_READ(sc, WPI_READ_MEM_DATA); 1328} 1329 1330static void 1331wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1332{ 1333 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1334 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1335} 1336 1337static void 1338wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1339 const uint32_t *data, int wlen) 1340{ 1341 for (; wlen > 0; wlen--, data++, addr+=4) 1342 wpi_mem_write(sc, addr, *data); 1343} 1344 1345/* 1346 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1347 * using the traditional bit-bang method. Data is read up until len bytes have 1348 * been obtained. 1349 */ 1350static uint16_t 1351wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1352{ 1353 int ntries; 1354 uint32_t val; 1355 uint8_t *out = data; 1356 1357 wpi_mem_lock(sc); 1358 1359 for (; len > 0; len -= 2, addr++) { 1360 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1361 1362 for (ntries = 0; ntries < 10; ntries++) { 1363 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1364 break; 1365 DELAY(5); 1366 } 1367 1368 if (ntries == 10) { 1369 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1370 return ETIMEDOUT; 1371 } 1372 1373 *out++= val >> 16; 1374 if (len > 1) 1375 *out ++= val >> 24; 1376 } 1377 1378 wpi_mem_unlock(sc); 1379 1380 return 0; 1381} 1382 1383/* 1384 * The firmware text and data segments are transferred to the NIC using DMA. 1385 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1386 * where to find it. Once the NIC has copied the firmware into its internal 1387 * memory, we can free our local copy in the driver. 1388 */ 1389static int 1390wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1391{ 1392 int error, ntries; 1393 1394 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1395 1396 size /= sizeof(uint32_t); 1397 1398 wpi_mem_lock(sc); 1399 1400 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1401 (const uint32_t *)fw, size); 1402 1403 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1404 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1405 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1406 1407 /* run microcode */ 1408 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1409 1410 /* wait while the adapter is busy copying the firmware */ 1411 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1412 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1413 DPRINTFN(WPI_DEBUG_HW, 1414 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1415 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1416 if (status & WPI_TX_IDLE(6)) { 1417 DPRINTFN(WPI_DEBUG_HW, 1418 ("Status Match! - ntries = %d\n", ntries)); 1419 break; 1420 } 1421 DELAY(10); 1422 } 1423 if (ntries == 1000) { 1424 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1425 error = ETIMEDOUT; 1426 } 1427 1428 /* start the microcode executing */ 1429 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1430 1431 wpi_mem_unlock(sc); 1432 1433 return (error); 1434} 1435 1436static void 1437wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1438 struct wpi_rx_data *data) 1439{ 1440 struct ifnet *ifp = sc->sc_ifp; 1441 struct ieee80211com *ic = ifp->if_l2com; 1442 struct wpi_rx_ring *ring = &sc->rxq; 1443 struct wpi_rx_stat *stat; 1444 struct wpi_rx_head *head; 1445 struct wpi_rx_tail *tail; 1446 struct ieee80211_node *ni; 1447 struct mbuf *m, *mnew; 1448 bus_addr_t paddr; 1449 int error; 1450 1451 stat = (struct wpi_rx_stat *)(desc + 1); 1452 1453 if (stat->len > WPI_STAT_MAXLEN) { 1454 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1455 ifp->if_ierrors++; 1456 return; 1457 } 1458 1459 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1460 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1461 1462 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1463 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1464 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1465 (uintmax_t)le64toh(tail->tstamp))); 1466 1467 /* XXX don't need mbuf, just dma buffer */ 1468 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1469 if (mnew == NULL) { 1470 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1471 __func__)); 1472 ic->ic_stats.is_rx_nobuf++; 1473 ifp->if_ierrors++; 1474 return; 1475 } 1476 error = bus_dmamap_load(ring->data_dmat, data->map, 1477 mtod(mnew, caddr_t), MJUMPAGESIZE, 1478 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1479 if (error != 0 && error != EFBIG) { 1480 device_printf(sc->sc_dev, 1481 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1482 m_freem(mnew); 1483 ic->ic_stats.is_rx_nobuf++; /* XXX need stat */ 1484 ifp->if_ierrors++; 1485 return; 1486 } 1487 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1488 1489 /* finalize mbuf and swap in new one */ 1490 m = data->m; 1491 m->m_pkthdr.rcvif = ifp; 1492 m->m_data = (caddr_t)(head + 1); 1493 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1494 1495 data->m = mnew; 1496 /* update Rx descriptor */ 1497 ring->desc[ring->cur] = htole32(paddr); 1498 1499 if (bpf_peers_present(ifp->if_bpf)) { 1500 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1501 1502 tap->wr_flags = 0; 1503 tap->wr_chan_freq = 1504 htole16(ic->ic_channels[head->chan].ic_freq); 1505 tap->wr_chan_flags = 1506 htole16(ic->ic_channels[head->chan].ic_flags); 1507 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1508 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1509 tap->wr_tsft = tail->tstamp; 1510 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1511 switch (head->rate) { 1512 /* CCK rates */ 1513 case 10: tap->wr_rate = 2; break; 1514 case 20: tap->wr_rate = 4; break; 1515 case 55: tap->wr_rate = 11; break; 1516 case 110: tap->wr_rate = 22; break; 1517 /* OFDM rates */ 1518 case 0xd: tap->wr_rate = 12; break; 1519 case 0xf: tap->wr_rate = 18; break; 1520 case 0x5: tap->wr_rate = 24; break; 1521 case 0x7: tap->wr_rate = 36; break; 1522 case 0x9: tap->wr_rate = 48; break; 1523 case 0xb: tap->wr_rate = 72; break; 1524 case 0x1: tap->wr_rate = 96; break; 1525 case 0x3: tap->wr_rate = 108; break; 1526 /* unknown rate: should not happen */ 1527 default: tap->wr_rate = 0; 1528 } 1529 if (le16toh(head->flags) & 0x4) 1530 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1531 1532 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m); 1533 } 1534 1535 WPI_UNLOCK(sc); 1536 1537 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1538 if (ni != NULL) { 1539 (void) ieee80211_input(ni, m, stat->rssi, 0, 0); 1540 ieee80211_free_node(ni); 1541 } else 1542 (void) ieee80211_input_all(ic, m, stat->rssi, 0, 0); 1543 1544 WPI_LOCK(sc); 1545} 1546 1547static void 1548wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1549{ 1550 struct ifnet *ifp = sc->sc_ifp; 1551 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1552 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1553 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1554 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1555 1556 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1557 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1558 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1559 le32toh(stat->status))); 1560 1561 /* 1562 * Update rate control statistics for the node. 1563 * XXX we should not count mgmt frames since they're always sent at 1564 * the lowest available bit-rate. 1565 * XXX frames w/o ACK shouldn't be used either 1566 */ 1567 wn->amn.amn_txcnt++; 1568 if (stat->ntries > 0) { 1569 DPRINTFN(3, ("%d retries\n", stat->ntries)); 1570 wn->amn.amn_retrycnt++; 1571 } 1572 1573 /* XXX oerrors should only count errors !maxtries */ 1574 if ((le32toh(stat->status) & 0xff) != 1) 1575 ifp->if_oerrors++; 1576 else 1577 ifp->if_opackets++; 1578 1579 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1580 bus_dmamap_unload(ring->data_dmat, txdata->map); 1581 /* XXX handle M_TXCB? */ 1582 m_freem(txdata->m); 1583 txdata->m = NULL; 1584 ieee80211_free_node(txdata->ni); 1585 txdata->ni = NULL; 1586 1587 ring->queued--; 1588 1589 sc->sc_tx_timer = 0; 1590 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1591 wpi_start_locked(ifp); 1592} 1593 1594static void 1595wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1596{ 1597 struct wpi_tx_ring *ring = &sc->cmdq; 1598 struct wpi_tx_data *data; 1599 1600 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1601 "type=%s len=%d\n", desc->qid, desc->idx, 1602 desc->flags, wpi_cmd_str(desc->type), 1603 le32toh(desc->len))); 1604 1605 if ((desc->qid & 7) != 4) 1606 return; /* not a command ack */ 1607 1608 data = &ring->data[desc->idx]; 1609 1610 /* if the command was mapped in a mbuf, free it */ 1611 if (data->m != NULL) { 1612 bus_dmamap_unload(ring->data_dmat, data->map); 1613 m_freem(data->m); 1614 data->m = NULL; 1615 } 1616 1617 sc->flags &= ~WPI_FLAG_BUSY; 1618 wakeup(&ring->cmd[desc->idx]); 1619} 1620 1621static void 1622wpi_notif_intr(struct wpi_softc *sc) 1623{ 1624 struct ifnet *ifp = sc->sc_ifp; 1625 struct ieee80211com *ic = ifp->if_l2com; 1626 struct wpi_rx_desc *desc; 1627 struct wpi_rx_data *data; 1628 uint32_t hw; 1629 1630 hw = le32toh(sc->shared->next); 1631 while (sc->rxq.cur != hw) { 1632 data = &sc->rxq.data[sc->rxq.cur]; 1633 desc = (void *)data->m->m_ext.ext_buf; 1634 1635 DPRINTFN(WPI_DEBUG_NOTIFY, 1636 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1637 desc->qid, 1638 desc->idx, 1639 desc->flags, 1640 desc->type, 1641 le32toh(desc->len))); 1642 1643 if (!(desc->qid & 0x80)) /* reply to a command */ 1644 wpi_cmd_intr(sc, desc); 1645 1646 switch (desc->type) { 1647 case WPI_RX_DONE: 1648 /* a 802.11 frame was received */ 1649 wpi_rx_intr(sc, desc, data); 1650 break; 1651 1652 case WPI_TX_DONE: 1653 /* a 802.11 frame has been transmitted */ 1654 wpi_tx_intr(sc, desc); 1655 break; 1656 1657 case WPI_UC_READY: 1658 { 1659 struct wpi_ucode_info *uc = 1660 (struct wpi_ucode_info *)(desc + 1); 1661 1662 /* the microcontroller is ready */ 1663 DPRINTF(("microcode alive notification version %x " 1664 "alive %x\n", le32toh(uc->version), 1665 le32toh(uc->valid))); 1666 1667 if (le32toh(uc->valid) != 1) { 1668 device_printf(sc->sc_dev, 1669 "microcontroller initialization failed\n"); 1670 wpi_stop_locked(sc); 1671 } 1672 break; 1673 } 1674 case WPI_STATE_CHANGED: 1675 { 1676 uint32_t *status = (uint32_t *)(desc + 1); 1677 1678 /* enabled/disabled notification */ 1679 DPRINTF(("state changed to %x\n", le32toh(*status))); 1680 1681 if (le32toh(*status) & 1) { 1682 device_printf(sc->sc_dev, 1683 "Radio transmitter is switched off\n"); 1684 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1685 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1686 /* Disable firmware commands */ 1687 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1688 } 1689 break; 1690 } 1691 case WPI_START_SCAN: 1692 { 1693 struct wpi_start_scan *scan = 1694 (struct wpi_start_scan *)(desc + 1); 1695 1696 DPRINTFN(WPI_DEBUG_SCANNING, 1697 ("scanning channel %d status %x\n", 1698 scan->chan, le32toh(scan->status))); 1699 break; 1700 } 1701 case WPI_STOP_SCAN: 1702 { 1703 struct wpi_stop_scan *scan = 1704 (struct wpi_stop_scan *)(desc + 1); 1705 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1706 1707 DPRINTFN(WPI_DEBUG_SCANNING, 1708 ("scan finished nchan=%d status=%d chan=%d\n", 1709 scan->nchan, scan->status, scan->chan)); 1710 1711 sc->sc_scan_timer = 0; 1712 ieee80211_scan_next(vap); 1713 break; 1714 } 1715 case WPI_MISSED_BEACON: 1716 { 1717 struct wpi_missed_beacon *beacon = 1718 (struct wpi_missed_beacon *)(desc + 1); 1719 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1720 1721 if (le32toh(beacon->consecutive) >= 1722 vap->iv_bmissthreshold) { 1723 DPRINTF(("Beacon miss: %u >= %u\n", 1724 le32toh(beacon->consecutive), 1725 vap->iv_bmissthreshold)); 1726 ieee80211_beacon_miss(ic); 1727 } 1728 break; 1729 } 1730 } 1731 1732 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1733 } 1734 1735 /* tell the firmware what we have processed */ 1736 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1737 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1738} 1739 1740static void 1741wpi_intr(void *arg) 1742{ 1743 struct wpi_softc *sc = arg; 1744 uint32_t r; 1745 1746 WPI_LOCK(sc); 1747 1748 r = WPI_READ(sc, WPI_INTR); 1749 if (r == 0 || r == 0xffffffff) { 1750 WPI_UNLOCK(sc); 1751 return; 1752 } 1753 1754 /* disable interrupts */ 1755 WPI_WRITE(sc, WPI_MASK, 0); 1756 /* ack interrupts */ 1757 WPI_WRITE(sc, WPI_INTR, r); 1758 1759 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1760 device_printf(sc->sc_dev, "fatal firmware error\n"); 1761 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1762 "(Hardware Error)")); 1763 wpi_queue_cmd(sc, WPI_RESTART, 0, WPI_QUEUE_CLEAR); 1764 sc->flags &= ~WPI_FLAG_BUSY; 1765 WPI_UNLOCK(sc); 1766 return; 1767 } 1768 1769 if (r & WPI_RX_INTR) 1770 wpi_notif_intr(sc); 1771 1772 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1773 wakeup(sc); 1774 1775 /* re-enable interrupts */ 1776 if (sc->sc_ifp->if_flags & IFF_UP) 1777 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1778 1779 WPI_UNLOCK(sc); 1780} 1781 1782static uint8_t 1783wpi_plcp_signal(int rate) 1784{ 1785 switch (rate) { 1786 /* CCK rates (returned values are device-dependent) */ 1787 case 2: return 10; 1788 case 4: return 20; 1789 case 11: return 55; 1790 case 22: return 110; 1791 1792 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1793 /* R1-R4 (ral/ural is R4-R1) */ 1794 case 12: return 0xd; 1795 case 18: return 0xf; 1796 case 24: return 0x5; 1797 case 36: return 0x7; 1798 case 48: return 0x9; 1799 case 72: return 0xb; 1800 case 96: return 0x1; 1801 case 108: return 0x3; 1802 1803 /* unsupported rates (should not get there) */ 1804 default: return 0; 1805 } 1806} 1807 1808/* quickly determine if a given rate is CCK or OFDM */ 1809#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1810 1811/* 1812 * Construct the data packet for a transmit buffer and acutally put 1813 * the buffer onto the transmit ring, kicking the card to process the 1814 * the buffer. 1815 */ 1816static int 1817wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1818 int ac) 1819{ 1820 struct ieee80211vap *vap = ni->ni_vap; 1821 struct ifnet *ifp = sc->sc_ifp; 1822 struct ieee80211com *ic = ifp->if_l2com; 1823 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1824 struct wpi_tx_ring *ring = &sc->txq[ac]; 1825 struct wpi_tx_desc *desc; 1826 struct wpi_tx_data *data; 1827 struct wpi_tx_cmd *cmd; 1828 struct wpi_cmd_data *tx; 1829 struct ieee80211_frame *wh; 1830 const struct ieee80211_txparam *tp; 1831 struct ieee80211_key *k; 1832 struct mbuf *mnew; 1833 int i, error, nsegs, rate, hdrlen, ismcast; 1834 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1835 1836 desc = &ring->desc[ring->cur]; 1837 data = &ring->data[ring->cur]; 1838 1839 wh = mtod(m0, struct ieee80211_frame *); 1840 1841 hdrlen = ieee80211_hdrsize(wh); 1842 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1843 1844 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1845 k = ieee80211_crypto_encap(ni, m0); 1846 if (k == NULL) { 1847 m_freem(m0); 1848 return ENOBUFS; 1849 } 1850 /* packet header may have moved, reset our local pointer */ 1851 wh = mtod(m0, struct ieee80211_frame *); 1852 } 1853 1854 cmd = &ring->cmd[ring->cur]; 1855 cmd->code = WPI_CMD_TX_DATA; 1856 cmd->flags = 0; 1857 cmd->qid = ring->qid; 1858 cmd->idx = ring->cur; 1859 1860 tx = (struct wpi_cmd_data *)cmd->data; 1861 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1862 tx->timeout = htole16(0); 1863 tx->ofdm_mask = 0xff; 1864 tx->cck_mask = 0x0f; 1865 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1866 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1867 tx->len = htole16(m0->m_pkthdr.len); 1868 1869 if (!ismcast) { 1870 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1871 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1872 tx->flags |= htole32(WPI_TX_NEED_ACK); 1873 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1874 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1875 tx->rts_ntries = 7; 1876 } 1877 } 1878 /* pick a rate */ 1879 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1880 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1881 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1882 /* tell h/w to set timestamp in probe responses */ 1883 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1884 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1885 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1886 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1887 tx->timeout = htole16(3); 1888 else 1889 tx->timeout = htole16(2); 1890 rate = tp->mgmtrate; 1891 } else if (ismcast) { 1892 rate = tp->mcastrate; 1893 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1894 rate = tp->ucastrate; 1895 } else { 1896 (void) ieee80211_amrr_choose(ni, &WPI_NODE(ni)->amn); 1897 rate = ni->ni_txrate; 1898 } 1899 tx->rate = wpi_plcp_signal(rate); 1900 1901 /* be very persistant at sending frames out */ 1902#if 0 1903 tx->data_ntries = tp->maxretry; 1904#else 1905 tx->data_ntries = 15; /* XXX way too high */ 1906#endif 1907 1908 if (bpf_peers_present(ifp->if_bpf)) { 1909 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1910 tap->wt_flags = 0; 1911 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1912 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1913 tap->wt_rate = rate; 1914 tap->wt_hwqueue = ac; 1915 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1916 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1917 1918 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1919 } 1920 1921 /* save and trim IEEE802.11 header */ 1922 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1923 m_adj(m0, hdrlen); 1924 1925 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 1926 &nsegs, BUS_DMA_NOWAIT); 1927 if (error != 0 && error != EFBIG) { 1928 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1929 error); 1930 m_freem(m0); 1931 return error; 1932 } 1933 if (error != 0) { 1934 /* XXX use m_collapse */ 1935 mnew = m_defrag(m0, M_DONTWAIT); 1936 if (mnew == NULL) { 1937 device_printf(sc->sc_dev, 1938 "could not defragment mbuf\n"); 1939 m_freem(m0); 1940 return ENOBUFS; 1941 } 1942 m0 = mnew; 1943 1944 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 1945 m0, segs, &nsegs, BUS_DMA_NOWAIT); 1946 if (error != 0) { 1947 device_printf(sc->sc_dev, 1948 "could not map mbuf (error %d)\n", error); 1949 m_freem(m0); 1950 return error; 1951 } 1952 } 1953 1954 data->m = m0; 1955 data->ni = ni; 1956 1957 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1958 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 1959 1960 /* first scatter/gather segment is used by the tx data command */ 1961 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1962 (1 + nsegs) << 24); 1963 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1964 ring->cur * sizeof (struct wpi_tx_cmd)); 1965 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1966 for (i = 1; i <= nsegs; i++) { 1967 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 1968 desc->segs[i].len = htole32(segs[i - 1].ds_len); 1969 } 1970 1971 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1972 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1973 BUS_DMASYNC_PREWRITE); 1974 1975 ring->queued++; 1976 1977 /* kick ring */ 1978 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1979 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1980 1981 return 0; 1982} 1983 1984/** 1985 * Process data waiting to be sent on the IFNET output queue 1986 */ 1987static void 1988wpi_start(struct ifnet *ifp) 1989{ 1990 struct wpi_softc *sc = ifp->if_softc; 1991 1992 WPI_LOCK(sc); 1993 wpi_start_locked(ifp); 1994 WPI_UNLOCK(sc); 1995} 1996 1997static void 1998wpi_start_locked(struct ifnet *ifp) 1999{ 2000 struct wpi_softc *sc = ifp->if_softc; 2001 struct ieee80211_node *ni; 2002 struct mbuf *m; 2003 int ac; 2004 2005 WPI_LOCK_ASSERT(sc); 2006 2007 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2008 return; 2009 2010 for (;;) { 2011 IFQ_POLL(&ifp->if_snd, m); 2012 if (m == NULL) 2013 break; 2014 /* no QoS encapsulation for EAPOL frames */ 2015 ac = M_WME_GETAC(m); 2016 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2017 /* there is no place left in this ring */ 2018 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2019 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2020 break; 2021 } 2022 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2023 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2024 m = ieee80211_encap(ni, m); 2025 if (m == NULL) { 2026 ieee80211_free_node(ni); 2027 ifp->if_oerrors++; 2028 continue; 2029 } 2030 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2031 ieee80211_free_node(ni); 2032 ifp->if_oerrors++; 2033 break; 2034 } 2035 sc->sc_tx_timer = 5; 2036 } 2037} 2038 2039static int 2040wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2041 const struct ieee80211_bpf_params *params) 2042{ 2043 struct ieee80211com *ic = ni->ni_ic; 2044 struct ifnet *ifp = ic->ic_ifp; 2045 struct wpi_softc *sc = ifp->if_softc; 2046 2047 /* prevent management frames from being sent if we're not ready */ 2048 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2049 m_freem(m); 2050 ieee80211_free_node(ni); 2051 return ENETDOWN; 2052 } 2053 WPI_LOCK(sc); 2054 2055 /* management frames go into ring 0 */ 2056 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2057 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2058 m_freem(m); 2059 WPI_UNLOCK(sc); 2060 ieee80211_free_node(ni); 2061 return ENOBUFS; /* XXX */ 2062 } 2063 2064 ifp->if_opackets++; 2065 if (wpi_tx_data(sc, m, ni, 0) != 0) 2066 goto bad; 2067 sc->sc_tx_timer = 5; 2068 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2069 2070 WPI_UNLOCK(sc); 2071 return 0; 2072bad: 2073 ifp->if_oerrors++; 2074 WPI_UNLOCK(sc); 2075 ieee80211_free_node(ni); 2076 return EIO; /* XXX */ 2077} 2078 2079static int 2080wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2081{ 2082 struct wpi_softc *sc = ifp->if_softc; 2083 struct ieee80211com *ic = ifp->if_l2com; 2084 struct ifreq *ifr = (struct ifreq *) data; 2085 int error = 0, startall = 0; 2086 2087 switch (cmd) { 2088 case SIOCSIFFLAGS: 2089 WPI_LOCK(sc); 2090 if ((ifp->if_flags & IFF_UP)) { 2091 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2092 wpi_init_locked(sc, 0); 2093 startall = 1; 2094 } 2095 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2096 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2097 wpi_stop_locked(sc); 2098 WPI_UNLOCK(sc); 2099 if (startall) 2100 ieee80211_start_all(ic); 2101 break; 2102 case SIOCGIFMEDIA: 2103 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2104 break; 2105 case SIOCGIFADDR: 2106 error = ether_ioctl(ifp, cmd, data); 2107 break; 2108 default: 2109 error = EINVAL; 2110 break; 2111 } 2112 return error; 2113} 2114 2115/* 2116 * Extract various information from EEPROM. 2117 */ 2118static void 2119wpi_read_eeprom(struct wpi_softc *sc) 2120{ 2121 struct ifnet *ifp = sc->sc_ifp; 2122 struct ieee80211com *ic = ifp->if_l2com; 2123 int i; 2124 2125 /* read the hardware capabilities, revision and SKU type */ 2126 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2127 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2128 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2129 2130 /* read the regulatory domain */ 2131 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2132 2133 /* read in the hw MAC address */ 2134 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2135 2136 /* read the list of authorized channels */ 2137 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2138 wpi_read_eeprom_channels(sc,i); 2139 2140 /* read the power level calibration info for each group */ 2141 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2142 wpi_read_eeprom_group(sc,i); 2143} 2144 2145/* 2146 * Send a command to the firmware. 2147 */ 2148static int 2149wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2150{ 2151 struct wpi_tx_ring *ring = &sc->cmdq; 2152 struct wpi_tx_desc *desc; 2153 struct wpi_tx_cmd *cmd; 2154 2155#ifdef WPI_DEBUG 2156 if (!async) { 2157 WPI_LOCK_ASSERT(sc); 2158 } 2159#endif 2160 2161 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2162 async)); 2163 2164 if (sc->flags & WPI_FLAG_BUSY) { 2165 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2166 __func__, code); 2167 return EAGAIN; 2168 } 2169 sc->flags|= WPI_FLAG_BUSY; 2170 2171 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2172 code, size)); 2173 2174 desc = &ring->desc[ring->cur]; 2175 cmd = &ring->cmd[ring->cur]; 2176 2177 cmd->code = code; 2178 cmd->flags = 0; 2179 cmd->qid = ring->qid; 2180 cmd->idx = ring->cur; 2181 memcpy(cmd->data, buf, size); 2182 2183 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2184 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2185 ring->cur * sizeof (struct wpi_tx_cmd)); 2186 desc->segs[0].len = htole32(4 + size); 2187 2188 /* kick cmd ring */ 2189 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2190 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2191 2192 if (async) { 2193 sc->flags &= ~ WPI_FLAG_BUSY; 2194 return 0; 2195 } 2196 2197 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2198} 2199 2200static int 2201wpi_wme_update(struct ieee80211com *ic) 2202{ 2203#define WPI_EXP2(v) htole16((1 << (v)) - 1) 2204#define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2205 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2206 const struct wmeParams *wmep; 2207 struct wpi_wme_setup wme; 2208 int ac; 2209 2210 /* don't override default WME values if WME is not actually enabled */ 2211 if (!(ic->ic_flags & IEEE80211_F_WME)) 2212 return 0; 2213 2214 wme.flags = 0; 2215 for (ac = 0; ac < WME_NUM_AC; ac++) { 2216 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2217 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2218 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2219 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2220 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2221 2222 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2223 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2224 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2225 } 2226 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2227#undef WPI_USEC 2228#undef WPI_EXP2 2229} 2230 2231/* 2232 * Configure h/w multi-rate retries. 2233 */ 2234static int 2235wpi_mrr_setup(struct wpi_softc *sc) 2236{ 2237 struct ifnet *ifp = sc->sc_ifp; 2238 struct ieee80211com *ic = ifp->if_l2com; 2239 struct wpi_mrr_setup mrr; 2240 int i, error; 2241 2242 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2243 2244 /* CCK rates (not used with 802.11a) */ 2245 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2246 mrr.rates[i].flags = 0; 2247 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2248 /* fallback to the immediate lower CCK rate (if any) */ 2249 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2250 /* try one time at this rate before falling back to "next" */ 2251 mrr.rates[i].ntries = 1; 2252 } 2253 2254 /* OFDM rates (not used with 802.11b) */ 2255 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2256 mrr.rates[i].flags = 0; 2257 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2258 /* fallback to the immediate lower OFDM rate (if any) */ 2259 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2260 mrr.rates[i].next = (i == WPI_OFDM6) ? 2261 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2262 WPI_OFDM6 : WPI_CCK2) : 2263 i - 1; 2264 /* try one time at this rate before falling back to "next" */ 2265 mrr.rates[i].ntries = 1; 2266 } 2267 2268 /* setup MRR for control frames */ 2269 mrr.which = htole32(WPI_MRR_CTL); 2270 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2271 if (error != 0) { 2272 device_printf(sc->sc_dev, 2273 "could not setup MRR for control frames\n"); 2274 return error; 2275 } 2276 2277 /* setup MRR for data frames */ 2278 mrr.which = htole32(WPI_MRR_DATA); 2279 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2280 if (error != 0) { 2281 device_printf(sc->sc_dev, 2282 "could not setup MRR for data frames\n"); 2283 return error; 2284 } 2285 2286 return 0; 2287} 2288 2289static void 2290wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2291{ 2292 struct wpi_cmd_led led; 2293 2294 led.which = which; 2295 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2296 led.off = off; 2297 led.on = on; 2298 2299 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2300} 2301 2302static void 2303wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2304{ 2305 struct wpi_cmd_tsf tsf; 2306 uint64_t val, mod; 2307 2308 memset(&tsf, 0, sizeof tsf); 2309 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2310 tsf.bintval = htole16(ni->ni_intval); 2311 tsf.lintval = htole16(10); 2312 2313 /* compute remaining time until next beacon */ 2314 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2315 mod = le64toh(tsf.tstamp) % val; 2316 tsf.binitval = htole32((uint32_t)(val - mod)); 2317 2318 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2319 device_printf(sc->sc_dev, "could not enable TSF\n"); 2320} 2321 2322#if 0 2323/* 2324 * Build a beacon frame that the firmware will broadcast periodically in 2325 * IBSS or HostAP modes. 2326 */ 2327static int 2328wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2329{ 2330 struct ifnet *ifp = sc->sc_ifp; 2331 struct ieee80211com *ic = ifp->if_l2com; 2332 struct wpi_tx_ring *ring = &sc->cmdq; 2333 struct wpi_tx_desc *desc; 2334 struct wpi_tx_data *data; 2335 struct wpi_tx_cmd *cmd; 2336 struct wpi_cmd_beacon *bcn; 2337 struct ieee80211_beacon_offsets bo; 2338 struct mbuf *m0; 2339 bus_addr_t physaddr; 2340 int error; 2341 2342 desc = &ring->desc[ring->cur]; 2343 data = &ring->data[ring->cur]; 2344 2345 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2346 if (m0 == NULL) { 2347 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2348 return ENOMEM; 2349 } 2350 2351 cmd = &ring->cmd[ring->cur]; 2352 cmd->code = WPI_CMD_SET_BEACON; 2353 cmd->flags = 0; 2354 cmd->qid = ring->qid; 2355 cmd->idx = ring->cur; 2356 2357 bcn = (struct wpi_cmd_beacon *)cmd->data; 2358 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2359 bcn->id = WPI_ID_BROADCAST; 2360 bcn->ofdm_mask = 0xff; 2361 bcn->cck_mask = 0x0f; 2362 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2363 bcn->len = htole16(m0->m_pkthdr.len); 2364 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2365 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2366 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2367 2368 /* save and trim IEEE802.11 header */ 2369 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2370 m_adj(m0, sizeof (struct ieee80211_frame)); 2371 2372 /* assume beacon frame is contiguous */ 2373 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2374 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2375 if (error != 0) { 2376 device_printf(sc->sc_dev, "could not map beacon\n"); 2377 m_freem(m0); 2378 return error; 2379 } 2380 2381 data->m = m0; 2382 2383 /* first scatter/gather segment is used by the beacon command */ 2384 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2385 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2386 ring->cur * sizeof (struct wpi_tx_cmd)); 2387 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2388 desc->segs[1].addr = htole32(physaddr); 2389 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2390 2391 /* kick cmd ring */ 2392 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2393 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2394 2395 return 0; 2396} 2397#endif 2398 2399static int 2400wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2401{ 2402 struct ieee80211com *ic = vap->iv_ic; 2403 struct ieee80211_node *ni = vap->iv_bss; 2404 struct wpi_node_info node; 2405 int error; 2406 2407 2408 /* update adapter's configuration */ 2409 sc->config.associd = 0; 2410 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2411 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2412 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2413 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2414 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2415 WPI_CONFIG_24GHZ); 2416 } 2417 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2418 sc->config.cck_mask = 0; 2419 sc->config.ofdm_mask = 0x15; 2420 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2421 sc->config.cck_mask = 0x03; 2422 sc->config.ofdm_mask = 0; 2423 } else { 2424 /* XXX assume 802.11b/g */ 2425 sc->config.cck_mask = 0x0f; 2426 sc->config.ofdm_mask = 0x15; 2427 } 2428 2429 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2430 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2431 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2432 sizeof (struct wpi_config), 1); 2433 if (error != 0) { 2434 device_printf(sc->sc_dev, "could not configure\n"); 2435 return error; 2436 } 2437 2438 /* configuration has changed, set Tx power accordingly */ 2439 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2440 device_printf(sc->sc_dev, "could not set Tx power\n"); 2441 return error; 2442 } 2443 2444 /* add default node */ 2445 memset(&node, 0, sizeof node); 2446 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2447 node.id = WPI_ID_BSS; 2448 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2449 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2450 node.action = htole32(WPI_ACTION_SET_RATE); 2451 node.antenna = WPI_ANTENNA_BOTH; 2452 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2453 if (error != 0) 2454 device_printf(sc->sc_dev, "could not add BSS node\n"); 2455 2456 return (error); 2457} 2458 2459static int 2460wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2461{ 2462 struct ieee80211com *ic = vap->iv_ic; 2463 struct ieee80211_node *ni = vap->iv_bss; 2464 int error; 2465 2466 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2467 /* link LED blinks while monitoring */ 2468 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2469 return 0; 2470 } 2471 2472 wpi_enable_tsf(sc, ni); 2473 2474 /* update adapter's configuration */ 2475 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2476 /* short preamble/slot time are negotiated when associating */ 2477 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2478 WPI_CONFIG_SHSLOT); 2479 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2480 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2481 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2482 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2483 sc->config.filter |= htole32(WPI_FILTER_BSS); 2484 2485 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2486 2487 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2488 sc->config.flags)); 2489 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2490 wpi_config), 1); 2491 if (error != 0) { 2492 device_printf(sc->sc_dev, "could not update configuration\n"); 2493 return error; 2494 } 2495 2496 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2497 if (error != 0) { 2498 device_printf(sc->sc_dev, "could set txpower\n"); 2499 return error; 2500 } 2501 2502 if (vap->iv_opmode == IEEE80211_M_STA) { 2503 /* fake a join to init the tx rate */ 2504 wpi_newassoc(ni, 1); 2505 } 2506 2507 /* link LED always on while associated */ 2508 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2509 2510 /* start automatic rate control timer */ 2511 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2512 2513 return (error); 2514} 2515 2516/* 2517 * Send a scan request to the firmware. Since this command is huge, we map it 2518 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2519 * much of this code is similar to that in wpi_cmd but because we must manually 2520 * construct the probe & channels, we duplicate what's needed here. XXX In the 2521 * future, this function should be modified to use wpi_cmd to help cleanup the 2522 * code base. 2523 */ 2524static int 2525wpi_scan(struct wpi_softc *sc) 2526{ 2527 struct ifnet *ifp = sc->sc_ifp; 2528 struct ieee80211com *ic = ifp->if_l2com; 2529 struct ieee80211_scan_state *ss = ic->ic_scan; 2530 struct wpi_tx_ring *ring = &sc->cmdq; 2531 struct wpi_tx_desc *desc; 2532 struct wpi_tx_data *data; 2533 struct wpi_tx_cmd *cmd; 2534 struct wpi_scan_hdr *hdr; 2535 struct wpi_scan_chan *chan; 2536 struct ieee80211_frame *wh; 2537 struct ieee80211_rateset *rs; 2538 struct ieee80211_channel *c; 2539 enum ieee80211_phymode mode; 2540 uint8_t *frm; 2541 int nrates, pktlen, error, i, nssid; 2542 bus_addr_t physaddr; 2543 2544 desc = &ring->desc[ring->cur]; 2545 data = &ring->data[ring->cur]; 2546 2547 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2548 if (data->m == NULL) { 2549 device_printf(sc->sc_dev, 2550 "could not allocate mbuf for scan command\n"); 2551 return ENOMEM; 2552 } 2553 2554 cmd = mtod(data->m, struct wpi_tx_cmd *); 2555 cmd->code = WPI_CMD_SCAN; 2556 cmd->flags = 0; 2557 cmd->qid = ring->qid; 2558 cmd->idx = ring->cur; 2559 2560 hdr = (struct wpi_scan_hdr *)cmd->data; 2561 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2562 2563 /* 2564 * Move to the next channel if no packets are received within 5 msecs 2565 * after sending the probe request (this helps to reduce the duration 2566 * of active scans). 2567 */ 2568 hdr->quiet = htole16(5); 2569 hdr->threshold = htole16(1); 2570 2571 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2572 /* send probe requests at 6Mbps */ 2573 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2574 2575 /* Enable crc checking */ 2576 hdr->promotion = htole16(1); 2577 } else { 2578 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2579 /* send probe requests at 1Mbps */ 2580 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2581 } 2582 hdr->tx.id = WPI_ID_BROADCAST; 2583 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2584 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2585 2586 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2587 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2588 for (i = 0; i < nssid; i++) { 2589 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2590 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2591 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2592 hdr->scan_essids[i].esslen); 2593 if (wpi_debug & WPI_DEBUG_SCANNING) { 2594 printf("Scanning Essid: "); 2595 ieee80211_print_essid(hdr->scan_essids[i].essid, 2596 hdr->scan_essids[i].esslen); 2597 printf("\n"); 2598 } 2599 } 2600 2601 /* 2602 * Build a probe request frame. Most of the following code is a 2603 * copy & paste of what is done in net80211. 2604 */ 2605 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2606 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2607 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2608 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2609 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2610 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2611 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2612 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2613 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2614 2615 frm = (uint8_t *)(wh + 1); 2616 2617 /* add essid IE, the hardware will fill this in for us */ 2618 *frm++ = IEEE80211_ELEMID_SSID; 2619 *frm++ = 0; 2620 2621 mode = ieee80211_chan2mode(ic->ic_curchan); 2622 rs = &ic->ic_sup_rates[mode]; 2623 2624 /* add supported rates IE */ 2625 *frm++ = IEEE80211_ELEMID_RATES; 2626 nrates = rs->rs_nrates; 2627 if (nrates > IEEE80211_RATE_SIZE) 2628 nrates = IEEE80211_RATE_SIZE; 2629 *frm++ = nrates; 2630 memcpy(frm, rs->rs_rates, nrates); 2631 frm += nrates; 2632 2633 /* add supported xrates IE */ 2634 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2635 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2636 *frm++ = IEEE80211_ELEMID_XRATES; 2637 *frm++ = nrates; 2638 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2639 frm += nrates; 2640 } 2641 2642 /* setup length of probe request */ 2643 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2644 2645 /* 2646 * Construct information about the channel that we 2647 * want to scan. The firmware expects this to be directly 2648 * after the scan probe request 2649 */ 2650 c = ic->ic_curchan; 2651 chan = (struct wpi_scan_chan *)frm; 2652 chan->chan = ieee80211_chan2ieee(ic, c); 2653 chan->flags = 0; 2654 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2655 chan->flags |= WPI_CHAN_ACTIVE; 2656 if (nssid != 0) 2657 chan->flags |= WPI_CHAN_DIRECT; 2658 } 2659 chan->gain_dsp = 0x6e; /* Default level */ 2660 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2661 chan->active = htole16(10); 2662 chan->passive = htole16(ss->ss_maxdwell); 2663 chan->gain_radio = 0x3b; 2664 } else { 2665 chan->active = htole16(20); 2666 chan->passive = htole16(ss->ss_maxdwell); 2667 chan->gain_radio = 0x28; 2668 } 2669 2670 DPRINTFN(WPI_DEBUG_SCANNING, 2671 ("Scanning %u Passive: %d\n", 2672 chan->chan, 2673 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2674 2675 hdr->nchan++; 2676 chan++; 2677 2678 frm += sizeof (struct wpi_scan_chan); 2679#if 0 2680 // XXX All Channels.... 2681 for (c = &ic->ic_channels[1]; 2682 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2683 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2684 continue; 2685 2686 chan->chan = ieee80211_chan2ieee(ic, c); 2687 chan->flags = 0; 2688 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2689 chan->flags |= WPI_CHAN_ACTIVE; 2690 if (ic->ic_des_ssid[0].len != 0) 2691 chan->flags |= WPI_CHAN_DIRECT; 2692 } 2693 chan->gain_dsp = 0x6e; /* Default level */ 2694 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2695 chan->active = htole16(10); 2696 chan->passive = htole16(110); 2697 chan->gain_radio = 0x3b; 2698 } else { 2699 chan->active = htole16(20); 2700 chan->passive = htole16(120); 2701 chan->gain_radio = 0x28; 2702 } 2703 2704 DPRINTFN(WPI_DEBUG_SCANNING, 2705 ("Scanning %u Passive: %d\n", 2706 chan->chan, 2707 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2708 2709 hdr->nchan++; 2710 chan++; 2711 2712 frm += sizeof (struct wpi_scan_chan); 2713 } 2714#endif 2715 2716 hdr->len = htole16(frm - (uint8_t *)hdr); 2717 pktlen = frm - (uint8_t *)cmd; 2718 2719 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2720 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2721 if (error != 0) { 2722 device_printf(sc->sc_dev, "could not map scan command\n"); 2723 m_freem(data->m); 2724 data->m = NULL; 2725 return error; 2726 } 2727 2728 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2729 desc->segs[0].addr = htole32(physaddr); 2730 desc->segs[0].len = htole32(pktlen); 2731 2732 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2733 BUS_DMASYNC_PREWRITE); 2734 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2735 2736 /* kick cmd ring */ 2737 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2738 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2739 2740 sc->sc_scan_timer = 5; 2741 return 0; /* will be notified async. of failure/success */ 2742} 2743 2744/** 2745 * Configure the card to listen to a particular channel, this transisions the 2746 * card in to being able to receive frames from remote devices. 2747 */ 2748static int 2749wpi_config(struct wpi_softc *sc) 2750{ 2751 struct ifnet *ifp = sc->sc_ifp; 2752 struct ieee80211com *ic = ifp->if_l2com; 2753 struct wpi_power power; 2754 struct wpi_bluetooth bluetooth; 2755 struct wpi_node_info node; 2756 int error; 2757 2758 /* set power mode */ 2759 memset(&power, 0, sizeof power); 2760 power.flags = htole32(WPI_POWER_CAM|0x8); 2761 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2762 if (error != 0) { 2763 device_printf(sc->sc_dev, "could not set power mode\n"); 2764 return error; 2765 } 2766 2767 /* configure bluetooth coexistence */ 2768 memset(&bluetooth, 0, sizeof bluetooth); 2769 bluetooth.flags = 3; 2770 bluetooth.lead = 0xaa; 2771 bluetooth.kill = 1; 2772 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2773 0); 2774 if (error != 0) { 2775 device_printf(sc->sc_dev, 2776 "could not configure bluetooth coexistence\n"); 2777 return error; 2778 } 2779 2780 /* configure adapter */ 2781 memset(&sc->config, 0, sizeof (struct wpi_config)); 2782 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2783 /*set default channel*/ 2784 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2785 sc->config.flags = htole32(WPI_CONFIG_TSF); 2786 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2787 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2788 WPI_CONFIG_24GHZ); 2789 } 2790 sc->config.filter = 0; 2791 switch (ic->ic_opmode) { 2792 case IEEE80211_M_STA: 2793 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2794 sc->config.mode = WPI_MODE_STA; 2795 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2796 break; 2797 case IEEE80211_M_IBSS: 2798 case IEEE80211_M_AHDEMO: 2799 sc->config.mode = WPI_MODE_IBSS; 2800 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2801 WPI_FILTER_MULTICAST); 2802 break; 2803 case IEEE80211_M_HOSTAP: 2804 sc->config.mode = WPI_MODE_HOSTAP; 2805 break; 2806 case IEEE80211_M_MONITOR: 2807 sc->config.mode = WPI_MODE_MONITOR; 2808 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2809 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2810 break; 2811 } 2812 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2813 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2814 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2815 sizeof (struct wpi_config), 0); 2816 if (error != 0) { 2817 device_printf(sc->sc_dev, "configure command failed\n"); 2818 return error; 2819 } 2820 2821 /* configuration has changed, set Tx power accordingly */ 2822 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2823 device_printf(sc->sc_dev, "could not set Tx power\n"); 2824 return error; 2825 } 2826 2827 /* add broadcast node */ 2828 memset(&node, 0, sizeof node); 2829 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2830 node.id = WPI_ID_BROADCAST; 2831 node.rate = wpi_plcp_signal(2); 2832 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2833 if (error != 0) { 2834 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2835 return error; 2836 } 2837 2838 /* Setup rate scalling */ 2839 error = wpi_mrr_setup(sc); 2840 if (error != 0) { 2841 device_printf(sc->sc_dev, "could not setup MRR\n"); 2842 return error; 2843 } 2844 2845 return 0; 2846} 2847 2848static void 2849wpi_stop_master(struct wpi_softc *sc) 2850{ 2851 uint32_t tmp; 2852 int ntries; 2853 2854 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2855 2856 tmp = WPI_READ(sc, WPI_RESET); 2857 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2858 2859 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2860 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2861 return; /* already asleep */ 2862 2863 for (ntries = 0; ntries < 100; ntries++) { 2864 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2865 break; 2866 DELAY(10); 2867 } 2868 if (ntries == 100) { 2869 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2870 } 2871} 2872 2873static int 2874wpi_power_up(struct wpi_softc *sc) 2875{ 2876 uint32_t tmp; 2877 int ntries; 2878 2879 wpi_mem_lock(sc); 2880 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2881 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2882 wpi_mem_unlock(sc); 2883 2884 for (ntries = 0; ntries < 5000; ntries++) { 2885 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2886 break; 2887 DELAY(10); 2888 } 2889 if (ntries == 5000) { 2890 device_printf(sc->sc_dev, 2891 "timeout waiting for NIC to power up\n"); 2892 return ETIMEDOUT; 2893 } 2894 return 0; 2895} 2896 2897static int 2898wpi_reset(struct wpi_softc *sc) 2899{ 2900 uint32_t tmp; 2901 int ntries; 2902 2903 DPRINTFN(WPI_DEBUG_HW, 2904 ("Resetting the card - clearing any uploaded firmware\n")); 2905 2906 /* clear any pending interrupts */ 2907 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2908 2909 tmp = WPI_READ(sc, WPI_PLL_CTL); 2910 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2911 2912 tmp = WPI_READ(sc, WPI_CHICKEN); 2913 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2914 2915 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2916 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2917 2918 /* wait for clock stabilization */ 2919 for (ntries = 0; ntries < 25000; ntries++) { 2920 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2921 break; 2922 DELAY(10); 2923 } 2924 if (ntries == 25000) { 2925 device_printf(sc->sc_dev, 2926 "timeout waiting for clock stabilization\n"); 2927 return ETIMEDOUT; 2928 } 2929 2930 /* initialize EEPROM */ 2931 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2932 2933 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2934 device_printf(sc->sc_dev, "EEPROM not found\n"); 2935 return EIO; 2936 } 2937 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2938 2939 return 0; 2940} 2941 2942static void 2943wpi_hw_config(struct wpi_softc *sc) 2944{ 2945 uint32_t rev, hw; 2946 2947 /* voodoo from the Linux "driver".. */ 2948 hw = WPI_READ(sc, WPI_HWCONFIG); 2949 2950 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2951 if ((rev & 0xc0) == 0x40) 2952 hw |= WPI_HW_ALM_MB; 2953 else if (!(rev & 0x80)) 2954 hw |= WPI_HW_ALM_MM; 2955 2956 if (sc->cap == 0x80) 2957 hw |= WPI_HW_SKU_MRC; 2958 2959 hw &= ~WPI_HW_REV_D; 2960 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2961 hw |= WPI_HW_REV_D; 2962 2963 if (sc->type > 1) 2964 hw |= WPI_HW_TYPE_B; 2965 2966 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2967} 2968 2969static void 2970wpi_rfkill_resume(struct wpi_softc *sc) 2971{ 2972 struct ifnet *ifp = sc->sc_ifp; 2973 struct ieee80211com *ic = ifp->if_l2com; 2974 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2975 int ntries; 2976 2977 /* enable firmware again */ 2978 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 2979 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 2980 2981 /* wait for thermal sensors to calibrate */ 2982 for (ntries = 0; ntries < 1000; ntries++) { 2983 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 2984 break; 2985 DELAY(10); 2986 } 2987 2988 if (ntries == 1000) { 2989 device_printf(sc->sc_dev, 2990 "timeout waiting for thermal calibration\n"); 2991 WPI_UNLOCK(sc); 2992 return; 2993 } 2994 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 2995 2996 if (wpi_config(sc) != 0) { 2997 device_printf(sc->sc_dev, "device config failed\n"); 2998 WPI_UNLOCK(sc); 2999 return; 3000 } 3001 3002 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3003 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3004 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3005 3006 if (vap != NULL) { 3007 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3008 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3009 ieee80211_beacon_miss(ic); 3010 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3011 } else 3012 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3013 } else { 3014 ieee80211_scan_next(vap); 3015 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3016 } 3017 } 3018 3019 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3020} 3021 3022static void 3023wpi_init_locked(struct wpi_softc *sc, int force) 3024{ 3025 struct ifnet *ifp = sc->sc_ifp; 3026 uint32_t tmp; 3027 int ntries, qid; 3028 3029 wpi_stop_locked(sc); 3030 (void)wpi_reset(sc); 3031 3032 wpi_mem_lock(sc); 3033 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3034 DELAY(20); 3035 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3036 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3037 wpi_mem_unlock(sc); 3038 3039 (void)wpi_power_up(sc); 3040 wpi_hw_config(sc); 3041 3042 /* init Rx ring */ 3043 wpi_mem_lock(sc); 3044 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3045 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3046 offsetof(struct wpi_shared, next)); 3047 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3048 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3049 wpi_mem_unlock(sc); 3050 3051 /* init Tx rings */ 3052 wpi_mem_lock(sc); 3053 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3054 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3055 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3056 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3057 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3058 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3059 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3060 3061 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3062 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3063 3064 for (qid = 0; qid < 6; qid++) { 3065 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3066 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3067 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3068 } 3069 wpi_mem_unlock(sc); 3070 3071 /* clear "radio off" and "disable command" bits (reversed logic) */ 3072 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3073 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3074 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3075 3076 /* clear any pending interrupts */ 3077 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3078 3079 /* enable interrupts */ 3080 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3081 3082 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3083 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3084 3085 if ((wpi_load_firmware(sc)) != 0) { 3086 device_printf(sc->sc_dev, 3087 "A problem occurred loading the firmware to the driver\n"); 3088 return; 3089 } 3090 3091 /* At this point the firmware is up and running. If the hardware 3092 * RF switch is turned off thermal calibration will fail, though 3093 * the card is still happy to continue to accept commands, catch 3094 * this case and schedule a task to watch for it to be turned on. 3095 */ 3096 wpi_mem_lock(sc); 3097 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3098 wpi_mem_unlock(sc); 3099 3100 if (!(tmp & 0x1)) { 3101 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3102 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3103 goto out; 3104 } 3105 3106 /* wait for thermal sensors to calibrate */ 3107 for (ntries = 0; ntries < 1000; ntries++) { 3108 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3109 break; 3110 DELAY(10); 3111 } 3112 3113 if (ntries == 1000) { 3114 device_printf(sc->sc_dev, 3115 "timeout waiting for thermal sensors calibration\n"); 3116 return; 3117 } 3118 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3119 3120 if (wpi_config(sc) != 0) { 3121 device_printf(sc->sc_dev, "device config failed\n"); 3122 return; 3123 } 3124 3125 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3126 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3127out: 3128 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3129} 3130 3131static void 3132wpi_init(void *arg) 3133{ 3134 struct wpi_softc *sc = arg; 3135 struct ifnet *ifp = sc->sc_ifp; 3136 struct ieee80211com *ic = ifp->if_l2com; 3137 3138 WPI_LOCK(sc); 3139 wpi_init_locked(sc, 0); 3140 WPI_UNLOCK(sc); 3141 3142 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3143 ieee80211_start_all(ic); /* start all vaps */ 3144} 3145 3146static void 3147wpi_stop_locked(struct wpi_softc *sc) 3148{ 3149 struct ifnet *ifp = sc->sc_ifp; 3150 uint32_t tmp; 3151 int ac; 3152 3153 sc->sc_tx_timer = 0; 3154 sc->sc_scan_timer = 0; 3155 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3156 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3157 callout_stop(&sc->watchdog_to); 3158 callout_stop(&sc->calib_to); 3159 3160 3161 /* disable interrupts */ 3162 WPI_WRITE(sc, WPI_MASK, 0); 3163 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3164 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3165 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3166 3167 /* Clear any commands left in the command buffer */ 3168 memset(sc->sc_cmd, 0, sizeof(sc->sc_cmd)); 3169 memset(sc->sc_cmd_arg, 0, sizeof(sc->sc_cmd_arg)); 3170 sc->sc_cmd_cur = 0; 3171 sc->sc_cmd_next = 0; 3172 3173 wpi_mem_lock(sc); 3174 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3175 wpi_mem_unlock(sc); 3176 3177 /* reset all Tx rings */ 3178 for (ac = 0; ac < 4; ac++) 3179 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3180 wpi_reset_tx_ring(sc, &sc->cmdq); 3181 3182 /* reset Rx ring */ 3183 wpi_reset_rx_ring(sc, &sc->rxq); 3184 3185 wpi_mem_lock(sc); 3186 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3187 wpi_mem_unlock(sc); 3188 3189 DELAY(5); 3190 3191 wpi_stop_master(sc); 3192 3193 tmp = WPI_READ(sc, WPI_RESET); 3194 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3195 sc->flags &= ~WPI_FLAG_BUSY; 3196} 3197 3198static void 3199wpi_stop(struct wpi_softc *sc) 3200{ 3201 WPI_LOCK(sc); 3202 wpi_stop_locked(sc); 3203 WPI_UNLOCK(sc); 3204} 3205 3206static void 3207wpi_newassoc(struct ieee80211_node *ni, int isnew) 3208{ 3209 struct ieee80211vap *vap = ni->ni_vap; 3210 struct wpi_vap *wvp = WPI_VAP(vap); 3211 3212 ieee80211_amrr_node_init(&wvp->amrr, &WPI_NODE(ni)->amn, ni); 3213} 3214 3215static void 3216wpi_calib_timeout(void *arg) 3217{ 3218 struct wpi_softc *sc = arg; 3219 struct ifnet *ifp = sc->sc_ifp; 3220 struct ieee80211com *ic = ifp->if_l2com; 3221 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3222 int temp; 3223 3224 if (vap->iv_state != IEEE80211_S_RUN) 3225 return; 3226 3227 /* update sensor data */ 3228 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3229 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3230 3231 wpi_power_calibration(sc, temp); 3232 3233 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3234} 3235 3236/* 3237 * This function is called periodically (every 60 seconds) to adjust output 3238 * power to temperature changes. 3239 */ 3240static void 3241wpi_power_calibration(struct wpi_softc *sc, int temp) 3242{ 3243 struct ifnet *ifp = sc->sc_ifp; 3244 struct ieee80211com *ic = ifp->if_l2com; 3245 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3246 3247 /* sanity-check read value */ 3248 if (temp < -260 || temp > 25) { 3249 /* this can't be correct, ignore */ 3250 DPRINTFN(WPI_DEBUG_TEMP, 3251 ("out-of-range temperature reported: %d\n", temp)); 3252 return; 3253 } 3254 3255 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3256 3257 /* adjust Tx power if need be */ 3258 if (abs(temp - sc->temp) <= 6) 3259 return; 3260 3261 sc->temp = temp; 3262 3263 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3264 /* just warn, too bad for the automatic calibration... */ 3265 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3266 } 3267} 3268 3269/** 3270 * Read the eeprom to find out what channels are valid for the given 3271 * band and update net80211 with what we find. 3272 */ 3273static void 3274wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3275{ 3276 struct ifnet *ifp = sc->sc_ifp; 3277 struct ieee80211com *ic = ifp->if_l2com; 3278 const struct wpi_chan_band *band = &wpi_bands[n]; 3279 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3280 int chan, i, offset, passive; 3281 3282 wpi_read_prom_data(sc, band->addr, channels, 3283 band->nchan * sizeof (struct wpi_eeprom_chan)); 3284 3285 for (i = 0; i < band->nchan; i++) { 3286 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3287 DPRINTFN(WPI_DEBUG_HW, 3288 ("Channel Not Valid: %d, band %d\n", 3289 band->chan[i],n)); 3290 continue; 3291 } 3292 3293 passive = 0; 3294 chan = band->chan[i]; 3295 offset = ic->ic_nchans; 3296 3297 /* is active scan allowed on this channel? */ 3298 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3299 passive = IEEE80211_CHAN_PASSIVE; 3300 } 3301 3302 if (n == 0) { /* 2GHz band */ 3303 ic->ic_channels[offset].ic_ieee = chan; 3304 ic->ic_channels[offset].ic_freq = 3305 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 3306 ic->ic_channels[offset].ic_flags = IEEE80211_CHAN_B | passive; 3307 offset++; 3308 ic->ic_channels[offset].ic_ieee = chan; 3309 ic->ic_channels[offset].ic_freq = 3310 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 3311 ic->ic_channels[offset].ic_flags = IEEE80211_CHAN_G | passive; 3312 offset++; 3313 3314 } else { /* 5GHz band */ 3315 /* 3316 * Some 3945ABG adapters support channels 7, 8, 11 3317 * and 12 in the 2GHz *and* 5GHz bands. 3318 * Because of limitations in our net80211(9) stack, 3319 * we can't support these channels in 5GHz band. 3320 * XXX not true; just need to map to proper frequency 3321 */ 3322 if (chan <= 14) 3323 continue; 3324 3325 ic->ic_channels[offset].ic_ieee = chan; 3326 ic->ic_channels[offset].ic_freq = 3327 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 3328 ic->ic_channels[offset].ic_flags = IEEE80211_CHAN_A | passive; 3329 offset++; 3330 } 3331 3332 /* save maximum allowed power for this channel */ 3333 sc->maxpwr[chan] = channels[i].maxpwr; 3334 3335 ic->ic_nchans = offset; 3336 3337#if 0 3338 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3339 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3340 //ic->ic_channels[chan].ic_minpower... 3341 //ic->ic_channels[chan].ic_maxregtxpower... 3342#endif 3343 3344 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d, offset %d\n", 3345 chan, channels[i].flags, sc->maxpwr[chan], offset)); 3346 } 3347} 3348 3349static void 3350wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3351{ 3352 struct wpi_power_group *group = &sc->groups[n]; 3353 struct wpi_eeprom_group rgroup; 3354 int i; 3355 3356 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3357 sizeof rgroup); 3358 3359 /* save power group information */ 3360 group->chan = rgroup.chan; 3361 group->maxpwr = rgroup.maxpwr; 3362 /* temperature at which the samples were taken */ 3363 group->temp = (int16_t)le16toh(rgroup.temp); 3364 3365 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3366 group->chan, group->maxpwr, group->temp)); 3367 3368 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3369 group->samples[i].index = rgroup.samples[i].index; 3370 group->samples[i].power = rgroup.samples[i].power; 3371 3372 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3373 group->samples[i].index, group->samples[i].power)); 3374 } 3375} 3376 3377/* 3378 * Update Tx power to match what is defined for channel `c'. 3379 */ 3380static int 3381wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3382{ 3383 struct ifnet *ifp = sc->sc_ifp; 3384 struct ieee80211com *ic = ifp->if_l2com; 3385 struct wpi_power_group *group; 3386 struct wpi_cmd_txpower txpower; 3387 u_int chan; 3388 int i; 3389 3390 /* get channel number */ 3391 chan = ieee80211_chan2ieee(ic, c); 3392 3393 /* find the power group to which this channel belongs */ 3394 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3395 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3396 if (chan <= group->chan) 3397 break; 3398 } else 3399 group = &sc->groups[0]; 3400 3401 memset(&txpower, 0, sizeof txpower); 3402 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3403 txpower.channel = htole16(chan); 3404 3405 /* set Tx power for all OFDM and CCK rates */ 3406 for (i = 0; i <= 11 ; i++) { 3407 /* retrieve Tx power for this channel/rate combination */ 3408 int idx = wpi_get_power_index(sc, group, c, 3409 wpi_ridx_to_rate[i]); 3410 3411 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3412 3413 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3414 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3415 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3416 } else { 3417 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3418 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3419 } 3420 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3421 chan, wpi_ridx_to_rate[i], idx)); 3422 } 3423 3424 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3425} 3426 3427/* 3428 * Determine Tx power index for a given channel/rate combination. 3429 * This takes into account the regulatory information from EEPROM and the 3430 * current temperature. 3431 */ 3432static int 3433wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3434 struct ieee80211_channel *c, int rate) 3435{ 3436/* fixed-point arithmetic division using a n-bit fractional part */ 3437#define fdivround(a, b, n) \ 3438 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3439 3440/* linear interpolation */ 3441#define interpolate(x, x1, y1, x2, y2, n) \ 3442 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3443 3444 struct ifnet *ifp = sc->sc_ifp; 3445 struct ieee80211com *ic = ifp->if_l2com; 3446 struct wpi_power_sample *sample; 3447 int pwr, idx; 3448 u_int chan; 3449 3450 /* get channel number */ 3451 chan = ieee80211_chan2ieee(ic, c); 3452 3453 /* default power is group's maximum power - 3dB */ 3454 pwr = group->maxpwr / 2; 3455 3456 /* decrease power for highest OFDM rates to reduce distortion */ 3457 switch (rate) { 3458 case 72: /* 36Mb/s */ 3459 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3460 break; 3461 case 96: /* 48Mb/s */ 3462 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3463 break; 3464 case 108: /* 54Mb/s */ 3465 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3466 break; 3467 } 3468 3469 /* never exceed channel's maximum allowed Tx power */ 3470 pwr = min(pwr, sc->maxpwr[chan]); 3471 3472 /* retrieve power index into gain tables from samples */ 3473 for (sample = group->samples; sample < &group->samples[3]; sample++) 3474 if (pwr > sample[1].power) 3475 break; 3476 /* fixed-point linear interpolation using a 19-bit fractional part */ 3477 idx = interpolate(pwr, sample[0].power, sample[0].index, 3478 sample[1].power, sample[1].index, 19); 3479 3480 /* 3481 * Adjust power index based on current temperature 3482 * - if colder than factory-calibrated: decreate output power 3483 * - if warmer than factory-calibrated: increase output power 3484 */ 3485 idx -= (sc->temp - group->temp) * 11 / 100; 3486 3487 /* decrease power for CCK rates (-5dB) */ 3488 if (!WPI_RATE_IS_OFDM(rate)) 3489 idx += 10; 3490 3491 /* keep power index in a valid range */ 3492 if (idx < 0) 3493 return 0; 3494 if (idx > WPI_MAX_PWR_INDEX) 3495 return WPI_MAX_PWR_INDEX; 3496 return idx; 3497 3498#undef interpolate 3499#undef fdivround 3500} 3501 3502/** 3503 * Called by net80211 framework to indicate that a scan 3504 * is starting. This function doesn't actually do the scan, 3505 * wpi_scan_curchan starts things off. This function is more 3506 * of an early warning from the framework we should get ready 3507 * for the scan. 3508 */ 3509static void 3510wpi_scan_start(struct ieee80211com *ic) 3511{ 3512 struct ifnet *ifp = ic->ic_ifp; 3513 struct wpi_softc *sc = ifp->if_softc; 3514 3515 wpi_queue_cmd(sc, WPI_SCAN_START, 0, WPI_QUEUE_NORMAL); 3516} 3517 3518/** 3519 * Called by the net80211 framework, indicates that the 3520 * scan has ended. If there is a scan in progress on the card 3521 * then it should be aborted. 3522 */ 3523static void 3524wpi_scan_end(struct ieee80211com *ic) 3525{ 3526 struct ifnet *ifp = ic->ic_ifp; 3527 struct wpi_softc *sc = ifp->if_softc; 3528 3529 wpi_queue_cmd(sc, WPI_SCAN_STOP, 0, WPI_QUEUE_NORMAL); 3530} 3531 3532/** 3533 * Called by the net80211 framework to indicate to the driver 3534 * that the channel should be changed 3535 */ 3536static void 3537wpi_set_channel(struct ieee80211com *ic) 3538{ 3539 struct ifnet *ifp = ic->ic_ifp; 3540 struct wpi_softc *sc = ifp->if_softc; 3541 3542 /* 3543 * Only need to set the channel in Monitor mode. AP scanning and auth 3544 * are already taken care of by their respective firmware commands. 3545 */ 3546 if (ic->ic_opmode == IEEE80211_M_MONITOR) 3547 wpi_queue_cmd(sc, WPI_SET_CHAN, 0, WPI_QUEUE_NORMAL); 3548} 3549 3550/** 3551 * Called by net80211 to indicate that we need to scan the current 3552 * channel. The channel is previously be set via the wpi_set_channel 3553 * callback. 3554 */ 3555static void 3556wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3557{ 3558 struct ieee80211vap *vap = ss->ss_vap; 3559 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3560 struct wpi_softc *sc = ifp->if_softc; 3561 3562 wpi_queue_cmd(sc, WPI_SCAN_CURCHAN, 0, WPI_QUEUE_NORMAL); 3563} 3564 3565/** 3566 * Called by the net80211 framework to indicate 3567 * the minimum dwell time has been met, terminate the scan. 3568 * We don't actually terminate the scan as the firmware will notify 3569 * us when it's finished and we have no way to interrupt it. 3570 */ 3571static void 3572wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3573{ 3574 /* NB: don't try to abort scan; wait for firmware to finish */ 3575} 3576 3577/** 3578 * The ops function is called to perform some actual work. 3579 * because we can't sleep from any of the ic callbacks, we queue an 3580 * op task with wpi_queue_cmd and have the taskqueue process that task. 3581 * The task that gets cued is a op task, which ends up calling this function. 3582 */ 3583static void 3584wpi_ops(void *arg0, int pending) 3585{ 3586 struct wpi_softc *sc = arg0; 3587 struct ifnet *ifp = sc->sc_ifp; 3588 struct ieee80211com *ic = ifp->if_l2com; 3589 int cmd, arg, error; 3590 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3591 3592again: 3593 WPI_CMD_LOCK(sc); 3594 cmd = sc->sc_cmd[sc->sc_cmd_cur]; 3595 arg = sc->sc_cmd_arg[sc->sc_cmd_cur]; 3596 3597 if (cmd == 0) { 3598 /* No more commands to process */ 3599 WPI_CMD_UNLOCK(sc); 3600 return; 3601 } 3602 sc->sc_cmd[sc->sc_cmd_cur] = 0; /* free the slot */ 3603 sc->sc_cmd_arg[sc->sc_cmd_cur] = 0; /* free the slot */ 3604 sc->sc_cmd_cur = (sc->sc_cmd_cur + 1) % WPI_CMD_MAXOPS; 3605 WPI_CMD_UNLOCK(sc); 3606 WPI_LOCK(sc); 3607 3608 DPRINTFN(WPI_DEBUG_OPS,("wpi_ops: command: %d\n", cmd)); 3609 3610 switch (cmd) { 3611 case WPI_RESTART: 3612 wpi_init_locked(sc, 0); 3613 WPI_UNLOCK(sc); 3614 return; 3615 3616 case WPI_RF_RESTART: 3617 wpi_rfkill_resume(sc); 3618 WPI_UNLOCK(sc); 3619 return; 3620 } 3621 3622 if (!(sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)) { 3623 WPI_UNLOCK(sc); 3624 return; 3625 } 3626 3627 switch (cmd) { 3628 case WPI_SCAN_START: 3629 /* make the link LED blink while we're scanning */ 3630 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3631 sc->flags |= WPI_FLAG_SCANNING; 3632 break; 3633 3634 case WPI_SCAN_STOP: 3635 sc->flags &= ~WPI_FLAG_SCANNING; 3636 break; 3637 3638 case WPI_SCAN_CURCHAN: 3639 if (wpi_scan(sc)) 3640 ieee80211_cancel_scan(vap); 3641 break; 3642 3643 case WPI_SET_CHAN: 3644 error = wpi_config(sc); 3645 if (error != 0) 3646 device_printf(sc->sc_dev, 3647 "error %d settting channel\n", error); 3648 break; 3649 3650 case WPI_AUTH: 3651 /* The node must be registered in the firmware before auth */ 3652 error = wpi_auth(sc, vap); 3653 WPI_UNLOCK(sc); 3654 if (error != 0) { 3655 device_printf(sc->sc_dev, 3656 "%s: could not move to auth state, error %d\n", 3657 __func__, error); 3658 return; 3659 } 3660 IEEE80211_LOCK(ic); 3661 WPI_VAP(vap)->newstate(vap, IEEE80211_S_AUTH, arg); 3662 if (vap->iv_newstate_cb != NULL) 3663 vap->iv_newstate_cb(vap, IEEE80211_S_AUTH, arg); 3664 IEEE80211_UNLOCK(ic); 3665 goto again; 3666 3667 case WPI_RUN: 3668 error = wpi_run(sc, vap); 3669 WPI_UNLOCK(sc); 3670 if (error != 0) { 3671 device_printf(sc->sc_dev, 3672 "%s: could not move to run state, error %d\n", 3673 __func__, error); 3674 return; 3675 } 3676 IEEE80211_LOCK(ic); 3677 WPI_VAP(vap)->newstate(vap, IEEE80211_S_RUN, arg); 3678 if (vap->iv_newstate_cb != NULL) 3679 vap->iv_newstate_cb(vap, IEEE80211_S_RUN, arg); 3680 IEEE80211_UNLOCK(ic); 3681 goto again; 3682 } 3683 WPI_UNLOCK(sc); 3684 3685 /* Take another pass */ 3686 goto again; 3687} 3688 3689/** 3690 * queue a command for later execution in a different thread. 3691 * This is needed as the net80211 callbacks do not allow 3692 * sleeping, since we need to sleep to confirm commands have 3693 * been processed by the firmware, we must defer execution to 3694 * a sleep enabled thread. 3695 */ 3696static int 3697wpi_queue_cmd(struct wpi_softc *sc, int cmd, int arg, int flush) 3698{ 3699 WPI_CMD_LOCK(sc); 3700 3701 if (flush) { 3702 memset(sc->sc_cmd, 0, sizeof (sc->sc_cmd)); 3703 memset(sc->sc_cmd_arg, 0, sizeof (sc->sc_cmd_arg)); 3704 sc->sc_cmd_cur = 0; 3705 sc->sc_cmd_next = 0; 3706 } 3707 3708 if (sc->sc_cmd[sc->sc_cmd_next] != 0) { 3709 WPI_CMD_UNLOCK(sc); 3710 DPRINTF(("%s: command %d dropped\n", __func__, cmd)); 3711 return (EBUSY); 3712 } 3713 3714 sc->sc_cmd[sc->sc_cmd_next] = cmd; 3715 sc->sc_cmd_arg[sc->sc_cmd_next] = arg; 3716 sc->sc_cmd_next = (sc->sc_cmd_next + 1) % WPI_CMD_MAXOPS; 3717 3718 taskqueue_enqueue(sc->sc_tq, &sc->sc_opstask); 3719 3720 WPI_CMD_UNLOCK(sc); 3721 3722 return 0; 3723} 3724 3725/* 3726 * Allocate DMA-safe memory for firmware transfer. 3727 */ 3728static int 3729wpi_alloc_fwmem(struct wpi_softc *sc) 3730{ 3731 /* allocate enough contiguous space to store text and data */ 3732 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3733 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3734 BUS_DMA_NOWAIT); 3735} 3736 3737static void 3738wpi_free_fwmem(struct wpi_softc *sc) 3739{ 3740 wpi_dma_contig_free(&sc->fw_dma); 3741} 3742 3743/** 3744 * Called every second, wpi_watchdog used by the watch dog timer 3745 * to check that the card is still alive 3746 */ 3747static void 3748wpi_watchdog(void *arg) 3749{ 3750 struct wpi_softc *sc = arg; 3751 struct ifnet *ifp = sc->sc_ifp; 3752 uint32_t tmp; 3753 3754 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3755 3756 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3757 /* No need to lock firmware memory */ 3758 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3759 3760 if ((tmp & 0x1) == 0) { 3761 /* Radio kill switch is still off */ 3762 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3763 return; 3764 } 3765 3766 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3767 wpi_queue_cmd(sc, WPI_RF_RESTART, 0, WPI_QUEUE_CLEAR); 3768 return; 3769 } 3770 3771 if (sc->sc_tx_timer > 0) { 3772 if (--sc->sc_tx_timer == 0) { 3773 device_printf(sc->sc_dev,"device timeout\n"); 3774 ifp->if_oerrors++; 3775 wpi_queue_cmd(sc, WPI_RESTART, 0, WPI_QUEUE_CLEAR); 3776 } 3777 } 3778 if (sc->sc_scan_timer > 0) { 3779 struct ifnet *ifp = sc->sc_ifp; 3780 struct ieee80211com *ic = ifp->if_l2com; 3781 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3782 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3783 device_printf(sc->sc_dev,"scan timeout\n"); 3784 ieee80211_cancel_scan(vap); 3785 wpi_queue_cmd(sc, WPI_RESTART, 0, WPI_QUEUE_CLEAR); 3786 } 3787 } 3788 3789 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3790 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3791} 3792 3793#ifdef WPI_DEBUG 3794static const char *wpi_cmd_str(int cmd) 3795{ 3796 switch (cmd) { 3797 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3798 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3799 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3800 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3801 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3802 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3803 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3804 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3805 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3806 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3807 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3808 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3809 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3810 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3811 3812 default: 3813 KASSERT(1, ("Unknown Command: %d\n", cmd)); 3814 return "UNKNOWN CMD"; /* Make the compiler happy */ 3815 } 3816} 3817#endif 3818 3819MODULE_DEPEND(wpi, pci, 1, 1, 1); 3820MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3821MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3822MODULE_DEPEND(wpi, wlan_amrr, 1, 1, 1); 3823