1 /*- 2 * Copyright (c) 2006,2007 3 * Damien Bergamini <damien.bergamini@free.fr> 4 * Benjamin Close <Benjamin.Close@clearchain.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #define VERSION "20071127" 20 21 #include <sys/cdefs.h> 22 __FBSDID("$FreeBSD$"); 23 24 /* 25 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 26 * 27 * The 3945ABG network adapter doesn't use traditional hardware as 28 * many other adaptors do. Instead at run time the eeprom is set into a known 29 * state and told to load boot firmware. The boot firmware loads an init and a 30 * main binary firmware image into SRAM on the card via DMA. 31 * Once the firmware is loaded, the driver/hw then 32 * communicate by way of circular dma rings via the the SRAM to the firmware. 33 * 34 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 35 * The 4 tx data rings allow for prioritization QoS. 36 * 37 * The rx data ring consists of 32 dma buffers. Two registers are used to 38 * indicate where in the ring the driver and the firmware are up to. The 39 * driver sets the initial read index (reg1) and the initial write index (reg2), 40 * the firmware updates the read index (reg1) on rx of a packet and fires an 41 * interrupt. The driver then processes the buffers starting at reg1 indicating 42 * to the firmware which buffers have been accessed by updating reg2. At the 43 * same time allocating new memory for the processed buffer. 44 * 45 * A similar thing happens with the tx rings. The difference is the firmware 46 * stop processing buffers once the queue is full and until confirmation 47 * of a successful transmition (tx_intr) has occurred. 48 * 49 * The command ring operates in the same manner as the tx queues. 50 * 51 * All communication direct to the card (ie eeprom) is classed as Stage1 52 * communication 53 * 54 * All communication via the firmware to the card is classed as State2. 55 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 56 * firmware. The bootstrap firmware and runtime firmware are loaded 57 * from host memory via dma to the card then told to execute. From this point 58 * on the majority of communications between the driver and the card goes 59 * via the firmware. 60 */ 61 62 #include <sys/param.h> 63 #include <sys/sysctl.h> 64 #include <sys/sockio.h> 65 #include <sys/mbuf.h> 66 #include <sys/kernel.h> 67 #include <sys/socket.h> 68 #include <sys/systm.h> 69 #include <sys/malloc.h> 70 #include <sys/queue.h> 71 #include <sys/taskqueue.h> 72 #include <sys/module.h> 73 #include <sys/bus.h> 74 #include <sys/endian.h> 75 #include <sys/linker.h> 76 #include <sys/firmware.h> 77 78 #include <machine/bus.h> 79 #include <machine/resource.h> 80 #include <sys/rman.h> 81 82 #include <dev/pci/pcireg.h> 83 #include <dev/pci/pcivar.h> 84 85 #include <net/bpf.h> 86 #include <net/if.h> 87 #include <net/if_arp.h> 88 #include <net/ethernet.h> 89 #include <net/if_dl.h> 90 #include <net/if_media.h> 91 #include <net/if_types.h> 92 93 #include <net80211/ieee80211_var.h> 94 #include <net80211/ieee80211_radiotap.h> 95 #include <net80211/ieee80211_regdomain.h> 96 #include <net80211/ieee80211_ratectl.h> 97 98 #include <netinet/in.h> 99 #include <netinet/in_systm.h> 100 #include <netinet/in_var.h> 101 #include <netinet/ip.h> 102 #include <netinet/if_ether.h> 103 104 #include <dev/wpi/if_wpireg.h> 105 #include <dev/wpi/if_wpivar.h> 106 107 #define WPI_DEBUG 108 109 #ifdef WPI_DEBUG 110 #define DPRINTF(x) do { if (wpi_debug != 0) printf x; } while (0) 111 #define DPRINTFN(n, x) do { if (wpi_debug & n) printf x; } while (0) 112 #define WPI_DEBUG_SET (wpi_debug != 0) 113 114 enum { 115 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ 116 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ 117 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ 118 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ 119 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ 120 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ 121 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ 122 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ 123 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ 124 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ 125 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ 126 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ 127 WPI_DEBUG_ANY = 0xffffffff 128 }; 129 130 static int wpi_debug = 0; 131 SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level"); 132 TUNABLE_INT("debug.wpi", &wpi_debug); 133 134 #else 135 #define DPRINTF(x) 136 #define DPRINTFN(n, x) 137 #define WPI_DEBUG_SET 0 138 #endif 139 140 struct wpi_ident { 141 uint16_t vendor; 142 uint16_t device; 143 uint16_t subdevice; 144 const char *name; 145 }; 146 147 static const struct wpi_ident wpi_ident_table[] = { 148 /* The below entries support ABG regardless of the subid */ 149 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 150 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 151 /* The below entries only support BG */ 152 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 153 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 154 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 155 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 156 { 0, 0, 0, NULL } 157 }; 158 159 static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 160 const char name[IFNAMSIZ], int unit, int opmode, 161 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 162 const uint8_t mac[IEEE80211_ADDR_LEN]); 163 static void wpi_vap_delete(struct ieee80211vap *); 164 static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 165 void **, bus_size_t, bus_size_t, int); 166 static void wpi_dma_contig_free(struct wpi_dma_info *); 167 static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 168 static int wpi_alloc_shared(struct wpi_softc *); 169 static void wpi_free_shared(struct wpi_softc *); 170 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 171 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 172 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 173 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 174 int, int); 175 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 176 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 177 static void wpi_newassoc(struct ieee80211_node *, int); 178 static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 179 static void wpi_mem_lock(struct wpi_softc *); 180 static void wpi_mem_unlock(struct wpi_softc *); 181 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 182 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 183 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 184 const uint32_t *, int); 185 static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 186 static int wpi_alloc_fwmem(struct wpi_softc *); 187 static void wpi_free_fwmem(struct wpi_softc *); 188 static int wpi_load_firmware(struct wpi_softc *); 189 static void wpi_unload_firmware(struct wpi_softc *); 190 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 191 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 192 struct wpi_rx_data *); 193 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 194 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 195 static void wpi_notif_intr(struct wpi_softc *); 196 static void wpi_intr(void *); 197 static uint8_t wpi_plcp_signal(int); 198 static void wpi_watchdog(void *); 199 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 200 struct ieee80211_node *, int); 201 static void wpi_start(struct ifnet *); 202 static void wpi_start_locked(struct ifnet *); 203 static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 204 const struct ieee80211_bpf_params *); 205 static void wpi_scan_start(struct ieee80211com *); 206 static void wpi_scan_end(struct ieee80211com *); 207 static void wpi_set_channel(struct ieee80211com *); 208 static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 209 static void wpi_scan_mindwell(struct ieee80211_scan_state *); 210 static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 211 static void wpi_read_eeprom(struct wpi_softc *, 212 uint8_t macaddr[IEEE80211_ADDR_LEN]); 213 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 214 static void wpi_read_eeprom_group(struct wpi_softc *, int); 215 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 216 static int wpi_wme_update(struct ieee80211com *); 217 static int wpi_mrr_setup(struct wpi_softc *); 218 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 219 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 220 #if 0 221 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 222 #endif 223 static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 224 static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 225 static int wpi_scan(struct wpi_softc *); 226 static int wpi_config(struct wpi_softc *); 227 static void wpi_stop_master(struct wpi_softc *); 228 static int wpi_power_up(struct wpi_softc *); 229 static int wpi_reset(struct wpi_softc *); 230 static void wpi_hwreset(void *, int); 231 static void wpi_rfreset(void *, int); 232 static void wpi_hw_config(struct wpi_softc *); 233 static void wpi_init(void *); 234 static void wpi_init_locked(struct wpi_softc *, int); 235 static void wpi_stop(struct wpi_softc *); 236 static void wpi_stop_locked(struct wpi_softc *); 237 238 static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 239 int); 240 static void wpi_calib_timeout(void *); 241 static void wpi_power_calibration(struct wpi_softc *, int); 242 static int wpi_get_power_index(struct wpi_softc *, 243 struct wpi_power_group *, struct ieee80211_channel *, int); 244 #ifdef WPI_DEBUG 245 static const char *wpi_cmd_str(int); 246 #endif 247 static int wpi_probe(device_t); 248 static int wpi_attach(device_t); 249 static int wpi_detach(device_t); 250 static int wpi_shutdown(device_t); 251 static int wpi_suspend(device_t); 252 static int wpi_resume(device_t); 253 254 255 static device_method_t wpi_methods[] = { 256 /* Device interface */ 257 DEVMETHOD(device_probe, wpi_probe), 258 DEVMETHOD(device_attach, wpi_attach), 259 DEVMETHOD(device_detach, wpi_detach), 260 DEVMETHOD(device_shutdown, wpi_shutdown), 261 DEVMETHOD(device_suspend, wpi_suspend), 262 DEVMETHOD(device_resume, wpi_resume), 263 264 { 0, 0 } 265 }; 266 267 static driver_t wpi_driver = { 268 "wpi", 269 wpi_methods, 270 sizeof (struct wpi_softc) 271 }; 272 273 static devclass_t wpi_devclass; 274 275 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0); 276 277 static const uint8_t wpi_ridx_to_plcp[] = { 278 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 279 /* R1-R4 (ral/ural is R4-R1) */ 280 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 281 /* CCK: device-dependent */ 282 10, 20, 55, 110 283 }; 284 static const uint8_t wpi_ridx_to_rate[] = { 285 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 286 2, 4, 11, 22 /*CCK */ 287 }; 288 289 290 static int 291 wpi_probe(device_t dev) 292 { 293 const struct wpi_ident *ident; 294 295 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 296 if (pci_get_vendor(dev) == ident->vendor && 297 pci_get_device(dev) == ident->device) { 298 device_set_desc(dev, ident->name); 299 return 0; 300 } 301 } 302 return ENXIO; 303 } 304 305 /** 306 * Load the firmare image from disk to the allocated dma buffer. 307 * we also maintain the reference to the firmware pointer as there 308 * is times where we may need to reload the firmware but we are not 309 * in a context that can access the filesystem (ie taskq cause by restart) 310 * 311 * @return 0 on success, an errno on failure 312 */ 313 static int 314 wpi_load_firmware(struct wpi_softc *sc) 315 { 316 const struct firmware *fp; 317 struct wpi_dma_info *dma = &sc->fw_dma; 318 const struct wpi_firmware_hdr *hdr; 319 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 320 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 321 int error; 322 323 DPRINTFN(WPI_DEBUG_FIRMWARE, 324 ("Attempting Loading Firmware from wpi_fw module\n")); 325 326 WPI_UNLOCK(sc); 327 328 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 329 device_printf(sc->sc_dev, 330 "could not load firmware image 'wpifw'\n"); 331 error = ENOENT; 332 WPI_LOCK(sc); 333 goto fail; 334 } 335 336 fp = sc->fw_fp; 337 338 WPI_LOCK(sc); 339 340 /* Validate the firmware is minimum a particular version */ 341 if (fp->version < WPI_FW_MINVERSION) { 342 device_printf(sc->sc_dev, 343 "firmware version is too old. Need %d, got %d\n", 344 WPI_FW_MINVERSION, 345 fp->version); 346 error = ENXIO; 347 goto fail; 348 } 349 350 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 351 device_printf(sc->sc_dev, 352 "firmware file too short: %zu bytes\n", fp->datasize); 353 error = ENXIO; 354 goto fail; 355 } 356 357 hdr = (const struct wpi_firmware_hdr *)fp->data; 358 359 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 360 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 361 362 rtextsz = le32toh(hdr->rtextsz); 363 rdatasz = le32toh(hdr->rdatasz); 364 itextsz = le32toh(hdr->itextsz); 365 idatasz = le32toh(hdr->idatasz); 366 btextsz = le32toh(hdr->btextsz); 367 368 /* check that all firmware segments are present */ 369 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 370 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 371 device_printf(sc->sc_dev, 372 "firmware file too short: %zu bytes\n", fp->datasize); 373 error = ENXIO; /* XXX appropriate error code? */ 374 goto fail; 375 } 376 377 /* get pointers to firmware segments */ 378 rtext = (const uint8_t *)(hdr + 1); 379 rdata = rtext + rtextsz; 380 itext = rdata + rdatasz; 381 idata = itext + itextsz; 382 btext = idata + idatasz; 383 384 DPRINTFN(WPI_DEBUG_FIRMWARE, 385 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 386 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 387 (le32toh(hdr->version) & 0xff000000) >> 24, 388 (le32toh(hdr->version) & 0x00ff0000) >> 16, 389 (le32toh(hdr->version) & 0x0000ffff), 390 rtextsz, rdatasz, 391 itextsz, idatasz, btextsz)); 392 393 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 394 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 395 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 396 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 397 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 398 399 /* sanity checks */ 400 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 401 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 402 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 403 idatasz > WPI_FW_INIT_DATA_MAXSZ || 404 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 405 (btextsz & 3) != 0) { 406 device_printf(sc->sc_dev, "firmware invalid\n"); 407 error = EINVAL; 408 goto fail; 409 } 410 411 /* copy initialization images into pre-allocated DMA-safe memory */ 412 memcpy(dma->vaddr, idata, idatasz); 413 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 414 415 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 416 417 /* tell adapter where to find initialization images */ 418 wpi_mem_lock(sc); 419 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 420 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 421 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 422 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 423 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 424 wpi_mem_unlock(sc); 425 426 /* load firmware boot code */ 427 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 428 device_printf(sc->sc_dev, "Failed to load microcode\n"); 429 goto fail; 430 } 431 432 /* now press "execute" */ 433 WPI_WRITE(sc, WPI_RESET, 0); 434 435 /* wait at most one second for the first alive notification */ 436 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 437 device_printf(sc->sc_dev, 438 "timeout waiting for adapter to initialize\n"); 439 goto fail; 440 } 441 442 /* copy runtime images into pre-allocated DMA-sage memory */ 443 memcpy(dma->vaddr, rdata, rdatasz); 444 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 445 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 446 447 /* tell adapter where to find runtime images */ 448 wpi_mem_lock(sc); 449 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 450 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 451 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 452 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 453 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 454 wpi_mem_unlock(sc); 455 456 /* wait at most one second for the first alive notification */ 457 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 458 device_printf(sc->sc_dev, 459 "timeout waiting for adapter to initialize2\n"); 460 goto fail; 461 } 462 463 DPRINTFN(WPI_DEBUG_FIRMWARE, 464 ("Firmware loaded to driver successfully\n")); 465 return error; 466 fail: 467 wpi_unload_firmware(sc); 468 return error; 469 } 470 471 /** 472 * Free the referenced firmware image 473 */ 474 static void 475 wpi_unload_firmware(struct wpi_softc *sc) 476 { 477 478 if (sc->fw_fp) { 479 WPI_UNLOCK(sc); 480 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 481 WPI_LOCK(sc); 482 sc->fw_fp = NULL; 483 } 484 } 485 486 static int 487 wpi_attach(device_t dev) 488 { 489 struct wpi_softc *sc = device_get_softc(dev); 490 struct ifnet *ifp; 491 struct ieee80211com *ic; 492 int ac, error, supportsa = 1; 493 uint32_t tmp; 494 const struct wpi_ident *ident; 495 uint8_t macaddr[IEEE80211_ADDR_LEN]; 496 497 sc->sc_dev = dev; 498 499 if (bootverbose || WPI_DEBUG_SET) 500 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 501 502 /* 503 * Some card's only support 802.11b/g not a, check to see if 504 * this is one such card. A 0x0 in the subdevice table indicates 505 * the entire subdevice range is to be ignored. 506 */ 507 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 508 if (ident->subdevice && 509 pci_get_subdevice(dev) == ident->subdevice) { 510 supportsa = 0; 511 break; 512 } 513 } 514 515 /* Create the tasks that can be queued */ 516 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc); 517 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc); 518 519 WPI_LOCK_INIT(sc); 520 521 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 522 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 523 524 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 525 device_printf(dev, "chip is in D%d power mode " 526 "-- setting to D0\n", pci_get_powerstate(dev)); 527 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 528 } 529 530 /* disable the retry timeout register */ 531 pci_write_config(dev, 0x41, 0, 1); 532 533 /* enable bus-mastering */ 534 pci_enable_busmaster(dev); 535 536 sc->mem_rid = PCIR_BAR(0); 537 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 538 RF_ACTIVE); 539 if (sc->mem == NULL) { 540 device_printf(dev, "could not allocate memory resource\n"); 541 error = ENOMEM; 542 goto fail; 543 } 544 545 sc->sc_st = rman_get_bustag(sc->mem); 546 sc->sc_sh = rman_get_bushandle(sc->mem); 547 548 sc->irq_rid = 0; 549 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 550 RF_ACTIVE | RF_SHAREABLE); 551 if (sc->irq == NULL) { 552 device_printf(dev, "could not allocate interrupt resource\n"); 553 error = ENOMEM; 554 goto fail; 555 } 556 557 /* 558 * Allocate DMA memory for firmware transfers. 559 */ 560 if ((error = wpi_alloc_fwmem(sc)) != 0) { 561 printf(": could not allocate firmware memory\n"); 562 error = ENOMEM; 563 goto fail; 564 } 565 566 /* 567 * Put adapter into a known state. 568 */ 569 if ((error = wpi_reset(sc)) != 0) { 570 device_printf(dev, "could not reset adapter\n"); 571 goto fail; 572 } 573 574 wpi_mem_lock(sc); 575 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 576 if (bootverbose || WPI_DEBUG_SET) 577 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 578 579 wpi_mem_unlock(sc); 580 581 /* Allocate shared page */ 582 if ((error = wpi_alloc_shared(sc)) != 0) { 583 device_printf(dev, "could not allocate shared page\n"); 584 goto fail; 585 } 586 587 /* tx data queues - 4 for QoS purposes */ 588 for (ac = 0; ac < WME_NUM_AC; ac++) { 589 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 590 if (error != 0) { 591 device_printf(dev, "could not allocate Tx ring %d\n",ac); 592 goto fail; 593 } 594 } 595 596 /* command queue to talk to the card's firmware */ 597 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 598 if (error != 0) { 599 device_printf(dev, "could not allocate command ring\n"); 600 goto fail; 601 } 602 603 /* receive data queue */ 604 error = wpi_alloc_rx_ring(sc, &sc->rxq); 605 if (error != 0) { 606 device_printf(dev, "could not allocate Rx ring\n"); 607 goto fail; 608 } 609 610 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 611 if (ifp == NULL) { 612 device_printf(dev, "can not if_alloc()\n"); 613 error = ENOMEM; 614 goto fail; 615 } 616 ic = ifp->if_l2com; 617 618 ic->ic_ifp = ifp; 619 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 620 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 621 622 /* set device capabilities */ 623 ic->ic_caps = 624 IEEE80211_C_STA /* station mode supported */ 625 | IEEE80211_C_MONITOR /* monitor mode supported */ 626 | IEEE80211_C_TXPMGT /* tx power management */ 627 | IEEE80211_C_SHSLOT /* short slot time supported */ 628 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 629 | IEEE80211_C_WPA /* 802.11i */ 630 /* XXX looks like WME is partly supported? */ 631 #if 0 632 | IEEE80211_C_IBSS /* IBSS mode support */ 633 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 634 | IEEE80211_C_WME /* 802.11e */ 635 | IEEE80211_C_HOSTAP /* Host access point mode */ 636 #endif 637 ; 638 639 /* 640 * Read in the eeprom and also setup the channels for 641 * net80211. We don't set the rates as net80211 does this for us 642 */ 643 wpi_read_eeprom(sc, macaddr); 644 645 if (bootverbose || WPI_DEBUG_SET) { 646 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 647 device_printf(sc->sc_dev, "Hardware Type: %c\n", 648 sc->type > 1 ? 'B': '?'); 649 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 650 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 651 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 652 supportsa ? "does" : "does not"); 653 654 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 655 what sc->rev really represents - benjsc 20070615 */ 656 } 657 658 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 659 ifp->if_softc = sc; 660 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 661 ifp->if_init = wpi_init; 662 ifp->if_ioctl = wpi_ioctl; 663 ifp->if_start = wpi_start; 664 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 665 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 666 IFQ_SET_READY(&ifp->if_snd); 667 668 ieee80211_ifattach(ic, macaddr); 669 /* override default methods */ 670 ic->ic_raw_xmit = wpi_raw_xmit; 671 ic->ic_newassoc = wpi_newassoc; 672 ic->ic_wme.wme_update = wpi_wme_update; 673 ic->ic_scan_start = wpi_scan_start; 674 ic->ic_scan_end = wpi_scan_end; 675 ic->ic_set_channel = wpi_set_channel; 676 ic->ic_scan_curchan = wpi_scan_curchan; 677 ic->ic_scan_mindwell = wpi_scan_mindwell; 678 679 ic->ic_vap_create = wpi_vap_create; 680 ic->ic_vap_delete = wpi_vap_delete; 681 682 ieee80211_radiotap_attach(ic, 683 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 684 WPI_TX_RADIOTAP_PRESENT, 685 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 686 WPI_RX_RADIOTAP_PRESENT); 687 688 /* 689 * Hook our interrupt after all initialization is complete. 690 */ 691 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 692 NULL, wpi_intr, sc, &sc->sc_ih); 693 if (error != 0) { 694 device_printf(dev, "could not set up interrupt\n"); 695 goto fail; 696 } 697 698 if (bootverbose) 699 ieee80211_announce(ic); 700 #ifdef XXX_DEBUG 701 ieee80211_announce_channels(ic); 702 #endif 703 return 0; 704 705 fail: wpi_detach(dev); 706 return ENXIO; 707 } 708 709 static int 710 wpi_detach(device_t dev) 711 { 712 struct wpi_softc *sc = device_get_softc(dev); 713 struct ifnet *ifp = sc->sc_ifp; 714 struct ieee80211com *ic; 715 int ac; 716 717 if (ifp != NULL) { 718 ic = ifp->if_l2com; 719 720 ieee80211_draintask(ic, &sc->sc_restarttask); 721 ieee80211_draintask(ic, &sc->sc_radiotask); 722 wpi_stop(sc); 723 callout_drain(&sc->watchdog_to); 724 callout_drain(&sc->calib_to); 725 ieee80211_ifdetach(ic); 726 } 727 728 WPI_LOCK(sc); 729 if (sc->txq[0].data_dmat) { 730 for (ac = 0; ac < WME_NUM_AC; ac++) 731 wpi_free_tx_ring(sc, &sc->txq[ac]); 732 733 wpi_free_tx_ring(sc, &sc->cmdq); 734 wpi_free_rx_ring(sc, &sc->rxq); 735 wpi_free_shared(sc); 736 } 737 738 if (sc->fw_fp != NULL) { 739 wpi_unload_firmware(sc); 740 } 741 742 if (sc->fw_dma.tag) 743 wpi_free_fwmem(sc); 744 WPI_UNLOCK(sc); 745 746 if (sc->irq != NULL) { 747 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 748 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 749 } 750 751 if (sc->mem != NULL) 752 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 753 754 if (ifp != NULL) 755 if_free(ifp); 756 757 WPI_LOCK_DESTROY(sc); 758 759 return 0; 760 } 761 762 static struct ieee80211vap * 763 wpi_vap_create(struct ieee80211com *ic, 764 const char name[IFNAMSIZ], int unit, int opmode, int flags, 765 const uint8_t bssid[IEEE80211_ADDR_LEN], 766 const uint8_t mac[IEEE80211_ADDR_LEN]) 767 { 768 struct wpi_vap *wvp; 769 struct ieee80211vap *vap; 770 771 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 772 return NULL; 773 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 774 M_80211_VAP, M_NOWAIT | M_ZERO); 775 if (wvp == NULL) 776 return NULL; 777 vap = &wvp->vap; 778 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 779 /* override with driver methods */ 780 wvp->newstate = vap->iv_newstate; 781 vap->iv_newstate = wpi_newstate; 782 783 ieee80211_ratectl_init(vap); 784 /* complete setup */ 785 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 786 ic->ic_opmode = opmode; 787 return vap; 788 } 789 790 static void 791 wpi_vap_delete(struct ieee80211vap *vap) 792 { 793 struct wpi_vap *wvp = WPI_VAP(vap); 794 795 ieee80211_ratectl_deinit(vap); 796 ieee80211_vap_detach(vap); 797 free(wvp, M_80211_VAP); 798 } 799 800 static void 801 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 802 { 803 if (error != 0) 804 return; 805 806 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 807 808 *(bus_addr_t *)arg = segs[0].ds_addr; 809 } 810 811 /* 812 * Allocates a contiguous block of dma memory of the requested size and 813 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 814 * allocations greater than 4096 may fail. Hence if the requested alignment is 815 * greater we allocate 'alignment' size extra memory and shift the vaddr and 816 * paddr after the dma load. This bypasses the problem at the cost of a little 817 * more memory. 818 */ 819 static int 820 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 821 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 822 { 823 int error; 824 bus_size_t align; 825 bus_size_t reqsize; 826 827 DPRINTFN(WPI_DEBUG_DMA, 828 ("Size: %zd - alignment %zd\n", size, alignment)); 829 830 dma->size = size; 831 dma->tag = NULL; 832 833 if (alignment > 4096) { 834 align = PAGE_SIZE; 835 reqsize = size + alignment; 836 } else { 837 align = alignment; 838 reqsize = size; 839 } 840 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 841 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 842 NULL, NULL, reqsize, 843 1, reqsize, flags, 844 NULL, NULL, &dma->tag); 845 if (error != 0) { 846 device_printf(sc->sc_dev, 847 "could not create shared page DMA tag\n"); 848 goto fail; 849 } 850 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 851 flags | BUS_DMA_ZERO, &dma->map); 852 if (error != 0) { 853 device_printf(sc->sc_dev, 854 "could not allocate shared page DMA memory\n"); 855 goto fail; 856 } 857 858 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 859 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 860 861 /* Save the original pointers so we can free all the memory */ 862 dma->paddr = dma->paddr_start; 863 dma->vaddr = dma->vaddr_start; 864 865 /* 866 * Check the alignment and increment by 4096 until we get the 867 * requested alignment. Fail if can't obtain the alignment 868 * we requested. 869 */ 870 if ((dma->paddr & (alignment -1 )) != 0) { 871 int i; 872 873 for (i = 0; i < alignment / 4096; i++) { 874 if ((dma->paddr & (alignment - 1 )) == 0) 875 break; 876 dma->paddr += 4096; 877 dma->vaddr += 4096; 878 } 879 if (i == alignment / 4096) { 880 device_printf(sc->sc_dev, 881 "alignment requirement was not satisfied\n"); 882 goto fail; 883 } 884 } 885 886 if (error != 0) { 887 device_printf(sc->sc_dev, 888 "could not load shared page DMA map\n"); 889 goto fail; 890 } 891 892 if (kvap != NULL) 893 *kvap = dma->vaddr; 894 895 return 0; 896 897 fail: 898 wpi_dma_contig_free(dma); 899 return error; 900 } 901 902 static void 903 wpi_dma_contig_free(struct wpi_dma_info *dma) 904 { 905 if (dma->tag) { 906 if (dma->map != NULL) { 907 if (dma->paddr_start != 0) { 908 bus_dmamap_sync(dma->tag, dma->map, 909 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 910 bus_dmamap_unload(dma->tag, dma->map); 911 } 912 bus_dmamem_free(dma->tag, &dma->vaddr_start, dma->map); 913 } 914 bus_dma_tag_destroy(dma->tag); 915 } 916 } 917 918 /* 919 * Allocate a shared page between host and NIC. 920 */ 921 static int 922 wpi_alloc_shared(struct wpi_softc *sc) 923 { 924 int error; 925 926 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 927 (void **)&sc->shared, sizeof (struct wpi_shared), 928 PAGE_SIZE, 929 BUS_DMA_NOWAIT); 930 931 if (error != 0) { 932 device_printf(sc->sc_dev, 933 "could not allocate shared area DMA memory\n"); 934 } 935 936 return error; 937 } 938 939 static void 940 wpi_free_shared(struct wpi_softc *sc) 941 { 942 wpi_dma_contig_free(&sc->shared_dma); 943 } 944 945 static int 946 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 947 { 948 949 int i, error; 950 951 ring->cur = 0; 952 953 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 954 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 955 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 956 957 if (error != 0) { 958 device_printf(sc->sc_dev, 959 "%s: could not allocate rx ring DMA memory, error %d\n", 960 __func__, error); 961 goto fail; 962 } 963 964 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 965 BUS_SPACE_MAXADDR_32BIT, 966 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 967 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 968 if (error != 0) { 969 device_printf(sc->sc_dev, 970 "%s: bus_dma_tag_create_failed, error %d\n", 971 __func__, error); 972 goto fail; 973 } 974 975 /* 976 * Setup Rx buffers. 977 */ 978 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 979 struct wpi_rx_data *data = &ring->data[i]; 980 struct mbuf *m; 981 bus_addr_t paddr; 982 983 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 984 if (error != 0) { 985 device_printf(sc->sc_dev, 986 "%s: bus_dmamap_create failed, error %d\n", 987 __func__, error); 988 goto fail; 989 } 990 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 991 if (m == NULL) { 992 device_printf(sc->sc_dev, 993 "%s: could not allocate rx mbuf\n", __func__); 994 error = ENOMEM; 995 goto fail; 996 } 997 /* map page */ 998 error = bus_dmamap_load(ring->data_dmat, data->map, 999 mtod(m, caddr_t), MJUMPAGESIZE, 1000 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1001 if (error != 0 && error != EFBIG) { 1002 device_printf(sc->sc_dev, 1003 "%s: bus_dmamap_load failed, error %d\n", 1004 __func__, error); 1005 m_freem(m); 1006 error = ENOMEM; /* XXX unique code */ 1007 goto fail; 1008 } 1009 bus_dmamap_sync(ring->data_dmat, data->map, 1010 BUS_DMASYNC_PREWRITE); 1011 1012 data->m = m; 1013 ring->desc[i] = htole32(paddr); 1014 } 1015 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1016 BUS_DMASYNC_PREWRITE); 1017 return 0; 1018 fail: 1019 wpi_free_rx_ring(sc, ring); 1020 return error; 1021 } 1022 1023 static void 1024 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1025 { 1026 int ntries; 1027 1028 wpi_mem_lock(sc); 1029 1030 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1031 1032 for (ntries = 0; ntries < 100; ntries++) { 1033 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1034 break; 1035 DELAY(10); 1036 } 1037 1038 wpi_mem_unlock(sc); 1039 1040 #ifdef WPI_DEBUG 1041 if (ntries == 100 && wpi_debug > 0) 1042 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1043 #endif 1044 1045 ring->cur = 0; 1046 } 1047 1048 static void 1049 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1050 { 1051 int i; 1052 1053 wpi_dma_contig_free(&ring->desc_dma); 1054 1055 for (i = 0; i < WPI_RX_RING_COUNT; i++) 1056 if (ring->data[i].m != NULL) 1057 m_freem(ring->data[i].m); 1058 } 1059 1060 static int 1061 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1062 int qid) 1063 { 1064 struct wpi_tx_data *data; 1065 int i, error; 1066 1067 ring->qid = qid; 1068 ring->count = count; 1069 ring->queued = 0; 1070 ring->cur = 0; 1071 ring->data = NULL; 1072 1073 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1074 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1075 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1076 1077 if (error != 0) { 1078 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1079 goto fail; 1080 } 1081 1082 /* update shared page with ring's base address */ 1083 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1084 1085 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1086 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1087 BUS_DMA_NOWAIT); 1088 1089 if (error != 0) { 1090 device_printf(sc->sc_dev, 1091 "could not allocate tx command DMA memory\n"); 1092 goto fail; 1093 } 1094 1095 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1096 M_NOWAIT | M_ZERO); 1097 if (ring->data == NULL) { 1098 device_printf(sc->sc_dev, 1099 "could not allocate tx data slots\n"); 1100 goto fail; 1101 } 1102 1103 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1104 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1105 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1106 &ring->data_dmat); 1107 if (error != 0) { 1108 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1109 goto fail; 1110 } 1111 1112 for (i = 0; i < count; i++) { 1113 data = &ring->data[i]; 1114 1115 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1116 if (error != 0) { 1117 device_printf(sc->sc_dev, 1118 "could not create tx buf DMA map\n"); 1119 goto fail; 1120 } 1121 bus_dmamap_sync(ring->data_dmat, data->map, 1122 BUS_DMASYNC_PREWRITE); 1123 } 1124 1125 return 0; 1126 1127 fail: 1128 wpi_free_tx_ring(sc, ring); 1129 return error; 1130 } 1131 1132 static void 1133 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1134 { 1135 struct wpi_tx_data *data; 1136 int i, ntries; 1137 1138 wpi_mem_lock(sc); 1139 1140 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1141 for (ntries = 0; ntries < 100; ntries++) { 1142 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1143 break; 1144 DELAY(10); 1145 } 1146 #ifdef WPI_DEBUG 1147 if (ntries == 100 && wpi_debug > 0) 1148 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1149 ring->qid); 1150 #endif 1151 wpi_mem_unlock(sc); 1152 1153 for (i = 0; i < ring->count; i++) { 1154 data = &ring->data[i]; 1155 1156 if (data->m != NULL) { 1157 bus_dmamap_unload(ring->data_dmat, data->map); 1158 m_freem(data->m); 1159 data->m = NULL; 1160 } 1161 } 1162 1163 ring->queued = 0; 1164 ring->cur = 0; 1165 } 1166 1167 static void 1168 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1169 { 1170 struct wpi_tx_data *data; 1171 int i; 1172 1173 wpi_dma_contig_free(&ring->desc_dma); 1174 wpi_dma_contig_free(&ring->cmd_dma); 1175 1176 if (ring->data != NULL) { 1177 for (i = 0; i < ring->count; i++) { 1178 data = &ring->data[i]; 1179 1180 if (data->m != NULL) { 1181 bus_dmamap_sync(ring->data_dmat, data->map, 1182 BUS_DMASYNC_POSTWRITE); 1183 bus_dmamap_unload(ring->data_dmat, data->map); 1184 m_freem(data->m); 1185 data->m = NULL; 1186 } 1187 } 1188 free(ring->data, M_DEVBUF); 1189 } 1190 1191 if (ring->data_dmat != NULL) 1192 bus_dma_tag_destroy(ring->data_dmat); 1193 } 1194 1195 static int 1196 wpi_shutdown(device_t dev) 1197 { 1198 struct wpi_softc *sc = device_get_softc(dev); 1199 1200 WPI_LOCK(sc); 1201 wpi_stop_locked(sc); 1202 wpi_unload_firmware(sc); 1203 WPI_UNLOCK(sc); 1204 1205 return 0; 1206 } 1207 1208 static int 1209 wpi_suspend(device_t dev) 1210 { 1211 struct wpi_softc *sc = device_get_softc(dev); 1212 1213 wpi_stop(sc); 1214 return 0; 1215 } 1216 1217 static int 1218 wpi_resume(device_t dev) 1219 { 1220 struct wpi_softc *sc = device_get_softc(dev); 1221 struct ifnet *ifp = sc->sc_ifp; 1222 1223 pci_write_config(dev, 0x41, 0, 1); 1224 1225 if (ifp->if_flags & IFF_UP) { 1226 wpi_init(ifp->if_softc); 1227 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1228 wpi_start(ifp); 1229 } 1230 return 0; 1231 } 1232 1233 /** 1234 * Called by net80211 when ever there is a change to 80211 state machine 1235 */ 1236 static int 1237 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1238 { 1239 struct wpi_vap *wvp = WPI_VAP(vap); 1240 struct ieee80211com *ic = vap->iv_ic; 1241 struct ifnet *ifp = ic->ic_ifp; 1242 struct wpi_softc *sc = ifp->if_softc; 1243 int error; 1244 1245 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1246 ieee80211_state_name[vap->iv_state], 1247 ieee80211_state_name[nstate], sc->flags)); 1248 1249 IEEE80211_UNLOCK(ic); 1250 WPI_LOCK(sc); 1251 if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) { 1252 /* 1253 * On !INIT -> SCAN transitions, we need to clear any possible 1254 * knowledge about associations. 1255 */ 1256 error = wpi_config(sc); 1257 if (error != 0) { 1258 device_printf(sc->sc_dev, 1259 "%s: device config failed, error %d\n", 1260 __func__, error); 1261 } 1262 } 1263 if (nstate == IEEE80211_S_AUTH || 1264 (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) { 1265 /* 1266 * The node must be registered in the firmware before auth. 1267 * Also the associd must be cleared on RUN -> ASSOC 1268 * transitions. 1269 */ 1270 error = wpi_auth(sc, vap); 1271 if (error != 0) { 1272 device_printf(sc->sc_dev, 1273 "%s: could not move to auth state, error %d\n", 1274 __func__, error); 1275 } 1276 } 1277 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1278 error = wpi_run(sc, vap); 1279 if (error != 0) { 1280 device_printf(sc->sc_dev, 1281 "%s: could not move to run state, error %d\n", 1282 __func__, error); 1283 } 1284 } 1285 if (nstate == IEEE80211_S_RUN) { 1286 /* RUN -> RUN transition; just restart the timers */ 1287 wpi_calib_timeout(sc); 1288 /* XXX split out rate control timer */ 1289 } 1290 WPI_UNLOCK(sc); 1291 IEEE80211_LOCK(ic); 1292 return wvp->newstate(vap, nstate, arg); 1293 } 1294 1295 /* 1296 * Grab exclusive access to NIC memory. 1297 */ 1298 static void 1299 wpi_mem_lock(struct wpi_softc *sc) 1300 { 1301 int ntries; 1302 uint32_t tmp; 1303 1304 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1305 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1306 1307 /* spin until we actually get the lock */ 1308 for (ntries = 0; ntries < 100; ntries++) { 1309 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1310 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1311 break; 1312 DELAY(10); 1313 } 1314 if (ntries == 100) 1315 device_printf(sc->sc_dev, "could not lock memory\n"); 1316 } 1317 1318 /* 1319 * Release lock on NIC memory. 1320 */ 1321 static void 1322 wpi_mem_unlock(struct wpi_softc *sc) 1323 { 1324 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1325 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1326 } 1327 1328 static uint32_t 1329 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1330 { 1331 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1332 return WPI_READ(sc, WPI_READ_MEM_DATA); 1333 } 1334 1335 static void 1336 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1337 { 1338 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1339 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1340 } 1341 1342 static void 1343 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1344 const uint32_t *data, int wlen) 1345 { 1346 for (; wlen > 0; wlen--, data++, addr+=4) 1347 wpi_mem_write(sc, addr, *data); 1348 } 1349 1350 /* 1351 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1352 * using the traditional bit-bang method. Data is read up until len bytes have 1353 * been obtained. 1354 */ 1355 static uint16_t 1356 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1357 { 1358 int ntries; 1359 uint32_t val; 1360 uint8_t *out = data; 1361 1362 wpi_mem_lock(sc); 1363 1364 for (; len > 0; len -= 2, addr++) { 1365 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1366 1367 for (ntries = 0; ntries < 10; ntries++) { 1368 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1369 break; 1370 DELAY(5); 1371 } 1372 1373 if (ntries == 10) { 1374 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1375 return ETIMEDOUT; 1376 } 1377 1378 *out++= val >> 16; 1379 if (len > 1) 1380 *out ++= val >> 24; 1381 } 1382 1383 wpi_mem_unlock(sc); 1384 1385 return 0; 1386 } 1387 1388 /* 1389 * The firmware text and data segments are transferred to the NIC using DMA. 1390 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1391 * where to find it. Once the NIC has copied the firmware into its internal 1392 * memory, we can free our local copy in the driver. 1393 */ 1394 static int 1395 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1396 { 1397 int error, ntries; 1398 1399 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1400 1401 size /= sizeof(uint32_t); 1402 1403 wpi_mem_lock(sc); 1404 1405 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1406 (const uint32_t *)fw, size); 1407 1408 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1409 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1410 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1411 1412 /* run microcode */ 1413 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1414 1415 /* wait while the adapter is busy copying the firmware */ 1416 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1417 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1418 DPRINTFN(WPI_DEBUG_HW, 1419 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1420 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1421 if (status & WPI_TX_IDLE(6)) { 1422 DPRINTFN(WPI_DEBUG_HW, 1423 ("Status Match! - ntries = %d\n", ntries)); 1424 break; 1425 } 1426 DELAY(10); 1427 } 1428 if (ntries == 1000) { 1429 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1430 error = ETIMEDOUT; 1431 } 1432 1433 /* start the microcode executing */ 1434 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1435 1436 wpi_mem_unlock(sc); 1437 1438 return (error); 1439 } 1440 1441 static void 1442 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1443 struct wpi_rx_data *data) 1444 { 1445 struct ifnet *ifp = sc->sc_ifp; 1446 struct ieee80211com *ic = ifp->if_l2com; 1447 struct wpi_rx_ring *ring = &sc->rxq; 1448 struct wpi_rx_stat *stat; 1449 struct wpi_rx_head *head; 1450 struct wpi_rx_tail *tail; 1451 struct ieee80211_node *ni; 1452 struct mbuf *m, *mnew; 1453 bus_addr_t paddr; 1454 int error; 1455 1456 stat = (struct wpi_rx_stat *)(desc + 1); 1457 1458 if (stat->len > WPI_STAT_MAXLEN) { 1459 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1460 ifp->if_ierrors++; 1461 return; 1462 } 1463 1464 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1465 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1466 1467 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1468 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1469 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1470 (uintmax_t)le64toh(tail->tstamp))); 1471 1472 /* discard Rx frames with bad CRC early */ 1473 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1474 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1475 le32toh(tail->flags))); 1476 ifp->if_ierrors++; 1477 return; 1478 } 1479 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1480 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1481 le16toh(head->len))); 1482 ifp->if_ierrors++; 1483 return; 1484 } 1485 1486 /* XXX don't need mbuf, just dma buffer */ 1487 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1488 if (mnew == NULL) { 1489 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1490 __func__)); 1491 ifp->if_ierrors++; 1492 return; 1493 } 1494 error = bus_dmamap_load(ring->data_dmat, data->map, 1495 mtod(mnew, caddr_t), MJUMPAGESIZE, 1496 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1497 if (error != 0 && error != EFBIG) { 1498 device_printf(sc->sc_dev, 1499 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1500 m_freem(mnew); 1501 ifp->if_ierrors++; 1502 return; 1503 } 1504 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1505 1506 /* finalize mbuf and swap in new one */ 1507 m = data->m; 1508 m->m_pkthdr.rcvif = ifp; 1509 m->m_data = (caddr_t)(head + 1); 1510 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1511 1512 data->m = mnew; 1513 /* update Rx descriptor */ 1514 ring->desc[ring->cur] = htole32(paddr); 1515 1516 if (ieee80211_radiotap_active(ic)) { 1517 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1518 1519 tap->wr_flags = 0; 1520 tap->wr_chan_freq = 1521 htole16(ic->ic_channels[head->chan].ic_freq); 1522 tap->wr_chan_flags = 1523 htole16(ic->ic_channels[head->chan].ic_flags); 1524 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1525 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1526 tap->wr_tsft = tail->tstamp; 1527 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1528 switch (head->rate) { 1529 /* CCK rates */ 1530 case 10: tap->wr_rate = 2; break; 1531 case 20: tap->wr_rate = 4; break; 1532 case 55: tap->wr_rate = 11; break; 1533 case 110: tap->wr_rate = 22; break; 1534 /* OFDM rates */ 1535 case 0xd: tap->wr_rate = 12; break; 1536 case 0xf: tap->wr_rate = 18; break; 1537 case 0x5: tap->wr_rate = 24; break; 1538 case 0x7: tap->wr_rate = 36; break; 1539 case 0x9: tap->wr_rate = 48; break; 1540 case 0xb: tap->wr_rate = 72; break; 1541 case 0x1: tap->wr_rate = 96; break; 1542 case 0x3: tap->wr_rate = 108; break; 1543 /* unknown rate: should not happen */ 1544 default: tap->wr_rate = 0; 1545 } 1546 if (le16toh(head->flags) & 0x4) 1547 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1548 } 1549 1550 WPI_UNLOCK(sc); 1551 1552 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1553 if (ni != NULL) { 1554 (void) ieee80211_input(ni, m, stat->rssi, 0); 1555 ieee80211_free_node(ni); 1556 } else 1557 (void) ieee80211_input_all(ic, m, stat->rssi, 0); 1558 1559 WPI_LOCK(sc); 1560 } 1561 1562 static void 1563 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1564 { 1565 struct ifnet *ifp = sc->sc_ifp; 1566 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1567 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1568 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1569 struct ieee80211_node *ni = txdata->ni; 1570 struct ieee80211vap *vap = ni->ni_vap; 1571 int retrycnt = 0; 1572 1573 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1574 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1575 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1576 le32toh(stat->status))); 1577 1578 /* 1579 * Update rate control statistics for the node. 1580 * XXX we should not count mgmt frames since they're always sent at 1581 * the lowest available bit-rate. 1582 * XXX frames w/o ACK shouldn't be used either 1583 */ 1584 if (stat->ntries > 0) { 1585 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1586 retrycnt = 1; 1587 } 1588 ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS, 1589 &retrycnt, NULL); 1590 1591 /* XXX oerrors should only count errors !maxtries */ 1592 if ((le32toh(stat->status) & 0xff) != 1) 1593 ifp->if_oerrors++; 1594 else 1595 ifp->if_opackets++; 1596 1597 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1598 bus_dmamap_unload(ring->data_dmat, txdata->map); 1599 /* XXX handle M_TXCB? */ 1600 m_freem(txdata->m); 1601 txdata->m = NULL; 1602 ieee80211_free_node(txdata->ni); 1603 txdata->ni = NULL; 1604 1605 ring->queued--; 1606 1607 sc->sc_tx_timer = 0; 1608 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1609 wpi_start_locked(ifp); 1610 } 1611 1612 static void 1613 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1614 { 1615 struct wpi_tx_ring *ring = &sc->cmdq; 1616 struct wpi_tx_data *data; 1617 1618 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1619 "type=%s len=%d\n", desc->qid, desc->idx, 1620 desc->flags, wpi_cmd_str(desc->type), 1621 le32toh(desc->len))); 1622 1623 if ((desc->qid & 7) != 4) 1624 return; /* not a command ack */ 1625 1626 data = &ring->data[desc->idx]; 1627 1628 /* if the command was mapped in a mbuf, free it */ 1629 if (data->m != NULL) { 1630 bus_dmamap_unload(ring->data_dmat, data->map); 1631 m_freem(data->m); 1632 data->m = NULL; 1633 } 1634 1635 sc->flags &= ~WPI_FLAG_BUSY; 1636 wakeup(&ring->cmd[desc->idx]); 1637 } 1638 1639 static void 1640 wpi_notif_intr(struct wpi_softc *sc) 1641 { 1642 struct ifnet *ifp = sc->sc_ifp; 1643 struct ieee80211com *ic = ifp->if_l2com; 1644 struct wpi_rx_desc *desc; 1645 struct wpi_rx_data *data; 1646 uint32_t hw; 1647 1648 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1649 BUS_DMASYNC_POSTREAD); 1650 1651 hw = le32toh(sc->shared->next); 1652 while (sc->rxq.cur != hw) { 1653 data = &sc->rxq.data[sc->rxq.cur]; 1654 1655 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1656 BUS_DMASYNC_POSTREAD); 1657 desc = (void *)data->m->m_ext.ext_buf; 1658 1659 DPRINTFN(WPI_DEBUG_NOTIFY, 1660 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1661 desc->qid, 1662 desc->idx, 1663 desc->flags, 1664 desc->type, 1665 le32toh(desc->len))); 1666 1667 if (!(desc->qid & 0x80)) /* reply to a command */ 1668 wpi_cmd_intr(sc, desc); 1669 1670 switch (desc->type) { 1671 case WPI_RX_DONE: 1672 /* a 802.11 frame was received */ 1673 wpi_rx_intr(sc, desc, data); 1674 break; 1675 1676 case WPI_TX_DONE: 1677 /* a 802.11 frame has been transmitted */ 1678 wpi_tx_intr(sc, desc); 1679 break; 1680 1681 case WPI_UC_READY: 1682 { 1683 struct wpi_ucode_info *uc = 1684 (struct wpi_ucode_info *)(desc + 1); 1685 1686 /* the microcontroller is ready */ 1687 DPRINTF(("microcode alive notification version %x " 1688 "alive %x\n", le32toh(uc->version), 1689 le32toh(uc->valid))); 1690 1691 if (le32toh(uc->valid) != 1) { 1692 device_printf(sc->sc_dev, 1693 "microcontroller initialization failed\n"); 1694 wpi_stop_locked(sc); 1695 } 1696 break; 1697 } 1698 case WPI_STATE_CHANGED: 1699 { 1700 uint32_t *status = (uint32_t *)(desc + 1); 1701 1702 /* enabled/disabled notification */ 1703 DPRINTF(("state changed to %x\n", le32toh(*status))); 1704 1705 if (le32toh(*status) & 1) { 1706 device_printf(sc->sc_dev, 1707 "Radio transmitter is switched off\n"); 1708 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1709 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1710 /* Disable firmware commands */ 1711 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1712 } 1713 break; 1714 } 1715 case WPI_START_SCAN: 1716 { 1717 #ifdef WPI_DEBUG 1718 struct wpi_start_scan *scan = 1719 (struct wpi_start_scan *)(desc + 1); 1720 #endif 1721 1722 DPRINTFN(WPI_DEBUG_SCANNING, 1723 ("scanning channel %d status %x\n", 1724 scan->chan, le32toh(scan->status))); 1725 break; 1726 } 1727 case WPI_STOP_SCAN: 1728 { 1729 #ifdef WPI_DEBUG 1730 struct wpi_stop_scan *scan = 1731 (struct wpi_stop_scan *)(desc + 1); 1732 #endif 1733 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1734 1735 DPRINTFN(WPI_DEBUG_SCANNING, 1736 ("scan finished nchan=%d status=%d chan=%d\n", 1737 scan->nchan, scan->status, scan->chan)); 1738 1739 sc->sc_scan_timer = 0; 1740 ieee80211_scan_next(vap); 1741 break; 1742 } 1743 case WPI_MISSED_BEACON: 1744 { 1745 struct wpi_missed_beacon *beacon = 1746 (struct wpi_missed_beacon *)(desc + 1); 1747 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1748 1749 if (le32toh(beacon->consecutive) >= 1750 vap->iv_bmissthreshold) { 1751 DPRINTF(("Beacon miss: %u >= %u\n", 1752 le32toh(beacon->consecutive), 1753 vap->iv_bmissthreshold)); 1754 ieee80211_beacon_miss(ic); 1755 } 1756 break; 1757 } 1758 } 1759 1760 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1761 } 1762 1763 /* tell the firmware what we have processed */ 1764 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1765 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1766 } 1767 1768 static void 1769 wpi_intr(void *arg) 1770 { 1771 struct wpi_softc *sc = arg; 1772 uint32_t r; 1773 1774 WPI_LOCK(sc); 1775 1776 r = WPI_READ(sc, WPI_INTR); 1777 if (r == 0 || r == 0xffffffff) { 1778 WPI_UNLOCK(sc); 1779 return; 1780 } 1781 1782 /* disable interrupts */ 1783 WPI_WRITE(sc, WPI_MASK, 0); 1784 /* ack interrupts */ 1785 WPI_WRITE(sc, WPI_INTR, r); 1786 1787 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1788 struct ifnet *ifp = sc->sc_ifp; 1789 struct ieee80211com *ic = ifp->if_l2com; 1790 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1791 1792 device_printf(sc->sc_dev, "fatal firmware error\n"); 1793 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1794 "(Hardware Error)")); 1795 if (vap != NULL) 1796 ieee80211_cancel_scan(vap); 1797 ieee80211_runtask(ic, &sc->sc_restarttask); 1798 sc->flags &= ~WPI_FLAG_BUSY; 1799 WPI_UNLOCK(sc); 1800 return; 1801 } 1802 1803 if (r & WPI_RX_INTR) 1804 wpi_notif_intr(sc); 1805 1806 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1807 wakeup(sc); 1808 1809 /* re-enable interrupts */ 1810 if (sc->sc_ifp->if_flags & IFF_UP) 1811 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1812 1813 WPI_UNLOCK(sc); 1814 } 1815 1816 static uint8_t 1817 wpi_plcp_signal(int rate) 1818 { 1819 switch (rate) { 1820 /* CCK rates (returned values are device-dependent) */ 1821 case 2: return 10; 1822 case 4: return 20; 1823 case 11: return 55; 1824 case 22: return 110; 1825 1826 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1827 /* R1-R4 (ral/ural is R4-R1) */ 1828 case 12: return 0xd; 1829 case 18: return 0xf; 1830 case 24: return 0x5; 1831 case 36: return 0x7; 1832 case 48: return 0x9; 1833 case 72: return 0xb; 1834 case 96: return 0x1; 1835 case 108: return 0x3; 1836 1837 /* unsupported rates (should not get there) */ 1838 default: return 0; 1839 } 1840 } 1841 1842 /* quickly determine if a given rate is CCK or OFDM */ 1843 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1844 1845 /* 1846 * Construct the data packet for a transmit buffer and acutally put 1847 * the buffer onto the transmit ring, kicking the card to process the 1848 * the buffer. 1849 */ 1850 static int 1851 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1852 int ac) 1853 { 1854 struct ieee80211vap *vap = ni->ni_vap; 1855 struct ifnet *ifp = sc->sc_ifp; 1856 struct ieee80211com *ic = ifp->if_l2com; 1857 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1858 struct wpi_tx_ring *ring = &sc->txq[ac]; 1859 struct wpi_tx_desc *desc; 1860 struct wpi_tx_data *data; 1861 struct wpi_tx_cmd *cmd; 1862 struct wpi_cmd_data *tx; 1863 struct ieee80211_frame *wh; 1864 const struct ieee80211_txparam *tp; 1865 struct ieee80211_key *k; 1866 struct mbuf *mnew; 1867 int i, error, nsegs, rate, hdrlen, ismcast; 1868 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1869 1870 desc = &ring->desc[ring->cur]; 1871 data = &ring->data[ring->cur]; 1872 1873 wh = mtod(m0, struct ieee80211_frame *); 1874 1875 hdrlen = ieee80211_hdrsize(wh); 1876 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1877 1878 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1879 k = ieee80211_crypto_encap(ni, m0); 1880 if (k == NULL) { 1881 m_freem(m0); 1882 return ENOBUFS; 1883 } 1884 /* packet header may have moved, reset our local pointer */ 1885 wh = mtod(m0, struct ieee80211_frame *); 1886 } 1887 1888 cmd = &ring->cmd[ring->cur]; 1889 cmd->code = WPI_CMD_TX_DATA; 1890 cmd->flags = 0; 1891 cmd->qid = ring->qid; 1892 cmd->idx = ring->cur; 1893 1894 tx = (struct wpi_cmd_data *)cmd->data; 1895 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1896 tx->timeout = htole16(0); 1897 tx->ofdm_mask = 0xff; 1898 tx->cck_mask = 0x0f; 1899 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1900 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1901 tx->len = htole16(m0->m_pkthdr.len); 1902 1903 if (!ismcast) { 1904 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1905 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1906 tx->flags |= htole32(WPI_TX_NEED_ACK); 1907 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1908 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1909 tx->rts_ntries = 7; 1910 } 1911 } 1912 /* pick a rate */ 1913 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1914 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1915 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1916 /* tell h/w to set timestamp in probe responses */ 1917 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1918 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1919 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1920 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1921 tx->timeout = htole16(3); 1922 else 1923 tx->timeout = htole16(2); 1924 rate = tp->mgmtrate; 1925 } else if (ismcast) { 1926 rate = tp->mcastrate; 1927 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1928 rate = tp->ucastrate; 1929 } else { 1930 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1931 rate = ni->ni_txrate; 1932 } 1933 tx->rate = wpi_plcp_signal(rate); 1934 1935 /* be very persistant at sending frames out */ 1936 #if 0 1937 tx->data_ntries = tp->maxretry; 1938 #else 1939 tx->data_ntries = 15; /* XXX way too high */ 1940 #endif 1941 1942 if (ieee80211_radiotap_active_vap(vap)) { 1943 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1944 tap->wt_flags = 0; 1945 tap->wt_rate = rate; 1946 tap->wt_hwqueue = ac; 1947 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1948 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1949 1950 ieee80211_radiotap_tx(vap, m0); 1951 } 1952 1953 /* save and trim IEEE802.11 header */ 1954 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1955 m_adj(m0, hdrlen); 1956 1957 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 1958 &nsegs, BUS_DMA_NOWAIT); 1959 if (error != 0 && error != EFBIG) { 1960 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1961 error); 1962 m_freem(m0); 1963 return error; 1964 } 1965 if (error != 0) { 1966 /* XXX use m_collapse */ 1967 mnew = m_defrag(m0, M_DONTWAIT); 1968 if (mnew == NULL) { 1969 device_printf(sc->sc_dev, 1970 "could not defragment mbuf\n"); 1971 m_freem(m0); 1972 return ENOBUFS; 1973 } 1974 m0 = mnew; 1975 1976 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 1977 m0, segs, &nsegs, BUS_DMA_NOWAIT); 1978 if (error != 0) { 1979 device_printf(sc->sc_dev, 1980 "could not map mbuf (error %d)\n", error); 1981 m_freem(m0); 1982 return error; 1983 } 1984 } 1985 1986 data->m = m0; 1987 data->ni = ni; 1988 1989 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1990 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 1991 1992 /* first scatter/gather segment is used by the tx data command */ 1993 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1994 (1 + nsegs) << 24); 1995 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1996 ring->cur * sizeof (struct wpi_tx_cmd)); 1997 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1998 for (i = 1; i <= nsegs; i++) { 1999 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 2000 desc->segs[i].len = htole32(segs[i - 1].ds_len); 2001 } 2002 2003 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2004 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2005 BUS_DMASYNC_PREWRITE); 2006 2007 ring->queued++; 2008 2009 /* kick ring */ 2010 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2011 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2012 2013 return 0; 2014 } 2015 2016 /** 2017 * Process data waiting to be sent on the IFNET output queue 2018 */ 2019 static void 2020 wpi_start(struct ifnet *ifp) 2021 { 2022 struct wpi_softc *sc = ifp->if_softc; 2023 2024 WPI_LOCK(sc); 2025 wpi_start_locked(ifp); 2026 WPI_UNLOCK(sc); 2027 } 2028 2029 static void 2030 wpi_start_locked(struct ifnet *ifp) 2031 { 2032 struct wpi_softc *sc = ifp->if_softc; 2033 struct ieee80211_node *ni; 2034 struct mbuf *m; 2035 int ac; 2036 2037 WPI_LOCK_ASSERT(sc); 2038 2039 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2040 return; 2041 2042 for (;;) { 2043 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2044 if (m == NULL) 2045 break; 2046 ac = M_WME_GETAC(m); 2047 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2048 /* there is no place left in this ring */ 2049 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2050 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2051 break; 2052 } 2053 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2054 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2055 ieee80211_free_node(ni); 2056 ifp->if_oerrors++; 2057 break; 2058 } 2059 sc->sc_tx_timer = 5; 2060 } 2061 } 2062 2063 static int 2064 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2065 const struct ieee80211_bpf_params *params) 2066 { 2067 struct ieee80211com *ic = ni->ni_ic; 2068 struct ifnet *ifp = ic->ic_ifp; 2069 struct wpi_softc *sc = ifp->if_softc; 2070 2071 /* prevent management frames from being sent if we're not ready */ 2072 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2073 m_freem(m); 2074 ieee80211_free_node(ni); 2075 return ENETDOWN; 2076 } 2077 WPI_LOCK(sc); 2078 2079 /* management frames go into ring 0 */ 2080 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2081 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2082 m_freem(m); 2083 WPI_UNLOCK(sc); 2084 ieee80211_free_node(ni); 2085 return ENOBUFS; /* XXX */ 2086 } 2087 2088 ifp->if_opackets++; 2089 if (wpi_tx_data(sc, m, ni, 0) != 0) 2090 goto bad; 2091 sc->sc_tx_timer = 5; 2092 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2093 2094 WPI_UNLOCK(sc); 2095 return 0; 2096 bad: 2097 ifp->if_oerrors++; 2098 WPI_UNLOCK(sc); 2099 ieee80211_free_node(ni); 2100 return EIO; /* XXX */ 2101 } 2102 2103 static int 2104 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2105 { 2106 struct wpi_softc *sc = ifp->if_softc; 2107 struct ieee80211com *ic = ifp->if_l2com; 2108 struct ifreq *ifr = (struct ifreq *) data; 2109 int error = 0, startall = 0; 2110 2111 switch (cmd) { 2112 case SIOCSIFFLAGS: 2113 WPI_LOCK(sc); 2114 if ((ifp->if_flags & IFF_UP)) { 2115 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2116 wpi_init_locked(sc, 0); 2117 startall = 1; 2118 } 2119 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2120 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2121 wpi_stop_locked(sc); 2122 WPI_UNLOCK(sc); 2123 if (startall) 2124 ieee80211_start_all(ic); 2125 break; 2126 case SIOCGIFMEDIA: 2127 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2128 break; 2129 case SIOCGIFADDR: 2130 error = ether_ioctl(ifp, cmd, data); 2131 break; 2132 default: 2133 error = EINVAL; 2134 break; 2135 } 2136 return error; 2137 } 2138 2139 /* 2140 * Extract various information from EEPROM. 2141 */ 2142 static void 2143 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2144 { 2145 int i; 2146 2147 /* read the hardware capabilities, revision and SKU type */ 2148 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2149 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2150 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2151 2152 /* read the regulatory domain */ 2153 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2154 2155 /* read in the hw MAC address */ 2156 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2157 2158 /* read the list of authorized channels */ 2159 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2160 wpi_read_eeprom_channels(sc,i); 2161 2162 /* read the power level calibration info for each group */ 2163 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2164 wpi_read_eeprom_group(sc,i); 2165 } 2166 2167 /* 2168 * Send a command to the firmware. 2169 */ 2170 static int 2171 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2172 { 2173 struct wpi_tx_ring *ring = &sc->cmdq; 2174 struct wpi_tx_desc *desc; 2175 struct wpi_tx_cmd *cmd; 2176 2177 #ifdef WPI_DEBUG 2178 if (!async) { 2179 WPI_LOCK_ASSERT(sc); 2180 } 2181 #endif 2182 2183 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2184 async)); 2185 2186 if (sc->flags & WPI_FLAG_BUSY) { 2187 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2188 __func__, code); 2189 return EAGAIN; 2190 } 2191 sc->flags|= WPI_FLAG_BUSY; 2192 2193 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2194 code, size)); 2195 2196 desc = &ring->desc[ring->cur]; 2197 cmd = &ring->cmd[ring->cur]; 2198 2199 cmd->code = code; 2200 cmd->flags = 0; 2201 cmd->qid = ring->qid; 2202 cmd->idx = ring->cur; 2203 memcpy(cmd->data, buf, size); 2204 2205 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2206 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2207 ring->cur * sizeof (struct wpi_tx_cmd)); 2208 desc->segs[0].len = htole32(4 + size); 2209 2210 /* kick cmd ring */ 2211 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2212 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2213 2214 if (async) { 2215 sc->flags &= ~ WPI_FLAG_BUSY; 2216 return 0; 2217 } 2218 2219 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2220 } 2221 2222 static int 2223 wpi_wme_update(struct ieee80211com *ic) 2224 { 2225 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2226 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2227 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2228 const struct wmeParams *wmep; 2229 struct wpi_wme_setup wme; 2230 int ac; 2231 2232 /* don't override default WME values if WME is not actually enabled */ 2233 if (!(ic->ic_flags & IEEE80211_F_WME)) 2234 return 0; 2235 2236 wme.flags = 0; 2237 for (ac = 0; ac < WME_NUM_AC; ac++) { 2238 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2239 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2240 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2241 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2242 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2243 2244 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2245 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2246 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2247 } 2248 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2249 #undef WPI_USEC 2250 #undef WPI_EXP2 2251 } 2252 2253 /* 2254 * Configure h/w multi-rate retries. 2255 */ 2256 static int 2257 wpi_mrr_setup(struct wpi_softc *sc) 2258 { 2259 struct ifnet *ifp = sc->sc_ifp; 2260 struct ieee80211com *ic = ifp->if_l2com; 2261 struct wpi_mrr_setup mrr; 2262 int i, error; 2263 2264 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2265 2266 /* CCK rates (not used with 802.11a) */ 2267 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2268 mrr.rates[i].flags = 0; 2269 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2270 /* fallback to the immediate lower CCK rate (if any) */ 2271 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2272 /* try one time at this rate before falling back to "next" */ 2273 mrr.rates[i].ntries = 1; 2274 } 2275 2276 /* OFDM rates (not used with 802.11b) */ 2277 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2278 mrr.rates[i].flags = 0; 2279 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2280 /* fallback to the immediate lower OFDM rate (if any) */ 2281 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2282 mrr.rates[i].next = (i == WPI_OFDM6) ? 2283 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2284 WPI_OFDM6 : WPI_CCK2) : 2285 i - 1; 2286 /* try one time at this rate before falling back to "next" */ 2287 mrr.rates[i].ntries = 1; 2288 } 2289 2290 /* setup MRR for control frames */ 2291 mrr.which = htole32(WPI_MRR_CTL); 2292 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2293 if (error != 0) { 2294 device_printf(sc->sc_dev, 2295 "could not setup MRR for control frames\n"); 2296 return error; 2297 } 2298 2299 /* setup MRR for data frames */ 2300 mrr.which = htole32(WPI_MRR_DATA); 2301 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2302 if (error != 0) { 2303 device_printf(sc->sc_dev, 2304 "could not setup MRR for data frames\n"); 2305 return error; 2306 } 2307 2308 return 0; 2309 } 2310 2311 static void 2312 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2313 { 2314 struct wpi_cmd_led led; 2315 2316 led.which = which; 2317 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2318 led.off = off; 2319 led.on = on; 2320 2321 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2322 } 2323 2324 static void 2325 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2326 { 2327 struct wpi_cmd_tsf tsf; 2328 uint64_t val, mod; 2329 2330 memset(&tsf, 0, sizeof tsf); 2331 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2332 tsf.bintval = htole16(ni->ni_intval); 2333 tsf.lintval = htole16(10); 2334 2335 /* compute remaining time until next beacon */ 2336 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2337 mod = le64toh(tsf.tstamp) % val; 2338 tsf.binitval = htole32((uint32_t)(val - mod)); 2339 2340 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2341 device_printf(sc->sc_dev, "could not enable TSF\n"); 2342 } 2343 2344 #if 0 2345 /* 2346 * Build a beacon frame that the firmware will broadcast periodically in 2347 * IBSS or HostAP modes. 2348 */ 2349 static int 2350 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2351 { 2352 struct ifnet *ifp = sc->sc_ifp; 2353 struct ieee80211com *ic = ifp->if_l2com; 2354 struct wpi_tx_ring *ring = &sc->cmdq; 2355 struct wpi_tx_desc *desc; 2356 struct wpi_tx_data *data; 2357 struct wpi_tx_cmd *cmd; 2358 struct wpi_cmd_beacon *bcn; 2359 struct ieee80211_beacon_offsets bo; 2360 struct mbuf *m0; 2361 bus_addr_t physaddr; 2362 int error; 2363 2364 desc = &ring->desc[ring->cur]; 2365 data = &ring->data[ring->cur]; 2366 2367 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2368 if (m0 == NULL) { 2369 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2370 return ENOMEM; 2371 } 2372 2373 cmd = &ring->cmd[ring->cur]; 2374 cmd->code = WPI_CMD_SET_BEACON; 2375 cmd->flags = 0; 2376 cmd->qid = ring->qid; 2377 cmd->idx = ring->cur; 2378 2379 bcn = (struct wpi_cmd_beacon *)cmd->data; 2380 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2381 bcn->id = WPI_ID_BROADCAST; 2382 bcn->ofdm_mask = 0xff; 2383 bcn->cck_mask = 0x0f; 2384 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2385 bcn->len = htole16(m0->m_pkthdr.len); 2386 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2387 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2388 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2389 2390 /* save and trim IEEE802.11 header */ 2391 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2392 m_adj(m0, sizeof (struct ieee80211_frame)); 2393 2394 /* assume beacon frame is contiguous */ 2395 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2396 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2397 if (error != 0) { 2398 device_printf(sc->sc_dev, "could not map beacon\n"); 2399 m_freem(m0); 2400 return error; 2401 } 2402 2403 data->m = m0; 2404 2405 /* first scatter/gather segment is used by the beacon command */ 2406 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2407 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2408 ring->cur * sizeof (struct wpi_tx_cmd)); 2409 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2410 desc->segs[1].addr = htole32(physaddr); 2411 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2412 2413 /* kick cmd ring */ 2414 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2415 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2416 2417 return 0; 2418 } 2419 #endif 2420 2421 static int 2422 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2423 { 2424 struct ieee80211com *ic = vap->iv_ic; 2425 struct ieee80211_node *ni = vap->iv_bss; 2426 struct wpi_node_info node; 2427 int error; 2428 2429 2430 /* update adapter's configuration */ 2431 sc->config.associd = 0; 2432 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2433 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2434 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2435 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2436 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2437 WPI_CONFIG_24GHZ); 2438 } else { 2439 sc->config.flags &= ~htole32(WPI_CONFIG_AUTO | 2440 WPI_CONFIG_24GHZ); 2441 } 2442 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2443 sc->config.cck_mask = 0; 2444 sc->config.ofdm_mask = 0x15; 2445 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2446 sc->config.cck_mask = 0x03; 2447 sc->config.ofdm_mask = 0; 2448 } else { 2449 /* XXX assume 802.11b/g */ 2450 sc->config.cck_mask = 0x0f; 2451 sc->config.ofdm_mask = 0x15; 2452 } 2453 2454 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2455 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2456 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2457 sizeof (struct wpi_config), 1); 2458 if (error != 0) { 2459 device_printf(sc->sc_dev, "could not configure\n"); 2460 return error; 2461 } 2462 2463 /* configuration has changed, set Tx power accordingly */ 2464 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2465 device_printf(sc->sc_dev, "could not set Tx power\n"); 2466 return error; 2467 } 2468 2469 /* add default node */ 2470 memset(&node, 0, sizeof node); 2471 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2472 node.id = WPI_ID_BSS; 2473 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2474 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2475 node.action = htole32(WPI_ACTION_SET_RATE); 2476 node.antenna = WPI_ANTENNA_BOTH; 2477 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2478 if (error != 0) 2479 device_printf(sc->sc_dev, "could not add BSS node\n"); 2480 2481 return (error); 2482 } 2483 2484 static int 2485 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2486 { 2487 struct ieee80211com *ic = vap->iv_ic; 2488 struct ieee80211_node *ni = vap->iv_bss; 2489 int error; 2490 2491 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2492 /* link LED blinks while monitoring */ 2493 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2494 return 0; 2495 } 2496 2497 wpi_enable_tsf(sc, ni); 2498 2499 /* update adapter's configuration */ 2500 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2501 /* short preamble/slot time are negotiated when associating */ 2502 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2503 WPI_CONFIG_SHSLOT); 2504 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2505 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2506 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2507 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2508 sc->config.filter |= htole32(WPI_FILTER_BSS); 2509 2510 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2511 2512 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2513 sc->config.flags)); 2514 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2515 wpi_config), 1); 2516 if (error != 0) { 2517 device_printf(sc->sc_dev, "could not update configuration\n"); 2518 return error; 2519 } 2520 2521 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2522 if (error != 0) { 2523 device_printf(sc->sc_dev, "could set txpower\n"); 2524 return error; 2525 } 2526 2527 /* link LED always on while associated */ 2528 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2529 2530 /* start automatic rate control timer */ 2531 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2532 2533 return (error); 2534 } 2535 2536 /* 2537 * Send a scan request to the firmware. Since this command is huge, we map it 2538 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2539 * much of this code is similar to that in wpi_cmd but because we must manually 2540 * construct the probe & channels, we duplicate what's needed here. XXX In the 2541 * future, this function should be modified to use wpi_cmd to help cleanup the 2542 * code base. 2543 */ 2544 static int 2545 wpi_scan(struct wpi_softc *sc) 2546 { 2547 struct ifnet *ifp = sc->sc_ifp; 2548 struct ieee80211com *ic = ifp->if_l2com; 2549 struct ieee80211_scan_state *ss = ic->ic_scan; 2550 struct wpi_tx_ring *ring = &sc->cmdq; 2551 struct wpi_tx_desc *desc; 2552 struct wpi_tx_data *data; 2553 struct wpi_tx_cmd *cmd; 2554 struct wpi_scan_hdr *hdr; 2555 struct wpi_scan_chan *chan; 2556 struct ieee80211_frame *wh; 2557 struct ieee80211_rateset *rs; 2558 struct ieee80211_channel *c; 2559 enum ieee80211_phymode mode; 2560 uint8_t *frm; 2561 int nrates, pktlen, error, i, nssid; 2562 bus_addr_t physaddr; 2563 2564 desc = &ring->desc[ring->cur]; 2565 data = &ring->data[ring->cur]; 2566 2567 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2568 if (data->m == NULL) { 2569 device_printf(sc->sc_dev, 2570 "could not allocate mbuf for scan command\n"); 2571 return ENOMEM; 2572 } 2573 2574 cmd = mtod(data->m, struct wpi_tx_cmd *); 2575 cmd->code = WPI_CMD_SCAN; 2576 cmd->flags = 0; 2577 cmd->qid = ring->qid; 2578 cmd->idx = ring->cur; 2579 2580 hdr = (struct wpi_scan_hdr *)cmd->data; 2581 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2582 2583 /* 2584 * Move to the next channel if no packets are received within 5 msecs 2585 * after sending the probe request (this helps to reduce the duration 2586 * of active scans). 2587 */ 2588 hdr->quiet = htole16(5); 2589 hdr->threshold = htole16(1); 2590 2591 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2592 /* send probe requests at 6Mbps */ 2593 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2594 2595 /* Enable crc checking */ 2596 hdr->promotion = htole16(1); 2597 } else { 2598 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2599 /* send probe requests at 1Mbps */ 2600 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2601 } 2602 hdr->tx.id = WPI_ID_BROADCAST; 2603 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2604 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2605 2606 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2607 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2608 for (i = 0; i < nssid; i++) { 2609 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2610 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2611 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2612 hdr->scan_essids[i].esslen); 2613 #ifdef WPI_DEBUG 2614 if (wpi_debug & WPI_DEBUG_SCANNING) { 2615 printf("Scanning Essid: "); 2616 ieee80211_print_essid(hdr->scan_essids[i].essid, 2617 hdr->scan_essids[i].esslen); 2618 printf("\n"); 2619 } 2620 #endif 2621 } 2622 2623 /* 2624 * Build a probe request frame. Most of the following code is a 2625 * copy & paste of what is done in net80211. 2626 */ 2627 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2628 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2629 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2630 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2631 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2632 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2633 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2634 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2635 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2636 2637 frm = (uint8_t *)(wh + 1); 2638 2639 /* add essid IE, the hardware will fill this in for us */ 2640 *frm++ = IEEE80211_ELEMID_SSID; 2641 *frm++ = 0; 2642 2643 mode = ieee80211_chan2mode(ic->ic_curchan); 2644 rs = &ic->ic_sup_rates[mode]; 2645 2646 /* add supported rates IE */ 2647 *frm++ = IEEE80211_ELEMID_RATES; 2648 nrates = rs->rs_nrates; 2649 if (nrates > IEEE80211_RATE_SIZE) 2650 nrates = IEEE80211_RATE_SIZE; 2651 *frm++ = nrates; 2652 memcpy(frm, rs->rs_rates, nrates); 2653 frm += nrates; 2654 2655 /* add supported xrates IE */ 2656 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2657 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2658 *frm++ = IEEE80211_ELEMID_XRATES; 2659 *frm++ = nrates; 2660 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2661 frm += nrates; 2662 } 2663 2664 /* setup length of probe request */ 2665 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2666 2667 /* 2668 * Construct information about the channel that we 2669 * want to scan. The firmware expects this to be directly 2670 * after the scan probe request 2671 */ 2672 c = ic->ic_curchan; 2673 chan = (struct wpi_scan_chan *)frm; 2674 chan->chan = ieee80211_chan2ieee(ic, c); 2675 chan->flags = 0; 2676 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2677 chan->flags |= WPI_CHAN_ACTIVE; 2678 if (nssid != 0) 2679 chan->flags |= WPI_CHAN_DIRECT; 2680 } 2681 chan->gain_dsp = 0x6e; /* Default level */ 2682 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2683 chan->active = htole16(10); 2684 chan->passive = htole16(ss->ss_maxdwell); 2685 chan->gain_radio = 0x3b; 2686 } else { 2687 chan->active = htole16(20); 2688 chan->passive = htole16(ss->ss_maxdwell); 2689 chan->gain_radio = 0x28; 2690 } 2691 2692 DPRINTFN(WPI_DEBUG_SCANNING, 2693 ("Scanning %u Passive: %d\n", 2694 chan->chan, 2695 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2696 2697 hdr->nchan++; 2698 chan++; 2699 2700 frm += sizeof (struct wpi_scan_chan); 2701 #if 0 2702 // XXX All Channels.... 2703 for (c = &ic->ic_channels[1]; 2704 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2705 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2706 continue; 2707 2708 chan->chan = ieee80211_chan2ieee(ic, c); 2709 chan->flags = 0; 2710 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2711 chan->flags |= WPI_CHAN_ACTIVE; 2712 if (ic->ic_des_ssid[0].len != 0) 2713 chan->flags |= WPI_CHAN_DIRECT; 2714 } 2715 chan->gain_dsp = 0x6e; /* Default level */ 2716 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2717 chan->active = htole16(10); 2718 chan->passive = htole16(110); 2719 chan->gain_radio = 0x3b; 2720 } else { 2721 chan->active = htole16(20); 2722 chan->passive = htole16(120); 2723 chan->gain_radio = 0x28; 2724 } 2725 2726 DPRINTFN(WPI_DEBUG_SCANNING, 2727 ("Scanning %u Passive: %d\n", 2728 chan->chan, 2729 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2730 2731 hdr->nchan++; 2732 chan++; 2733 2734 frm += sizeof (struct wpi_scan_chan); 2735 } 2736 #endif 2737 2738 hdr->len = htole16(frm - (uint8_t *)hdr); 2739 pktlen = frm - (uint8_t *)cmd; 2740 2741 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2742 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2743 if (error != 0) { 2744 device_printf(sc->sc_dev, "could not map scan command\n"); 2745 m_freem(data->m); 2746 data->m = NULL; 2747 return error; 2748 } 2749 2750 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2751 desc->segs[0].addr = htole32(physaddr); 2752 desc->segs[0].len = htole32(pktlen); 2753 2754 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2755 BUS_DMASYNC_PREWRITE); 2756 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2757 2758 /* kick cmd ring */ 2759 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2760 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2761 2762 sc->sc_scan_timer = 5; 2763 return 0; /* will be notified async. of failure/success */ 2764 } 2765 2766 /** 2767 * Configure the card to listen to a particular channel, this transisions the 2768 * card in to being able to receive frames from remote devices. 2769 */ 2770 static int 2771 wpi_config(struct wpi_softc *sc) 2772 { 2773 struct ifnet *ifp = sc->sc_ifp; 2774 struct ieee80211com *ic = ifp->if_l2com; 2775 struct wpi_power power; 2776 struct wpi_bluetooth bluetooth; 2777 struct wpi_node_info node; 2778 int error; 2779 2780 /* set power mode */ 2781 memset(&power, 0, sizeof power); 2782 power.flags = htole32(WPI_POWER_CAM|0x8); 2783 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2784 if (error != 0) { 2785 device_printf(sc->sc_dev, "could not set power mode\n"); 2786 return error; 2787 } 2788 2789 /* configure bluetooth coexistence */ 2790 memset(&bluetooth, 0, sizeof bluetooth); 2791 bluetooth.flags = 3; 2792 bluetooth.lead = 0xaa; 2793 bluetooth.kill = 1; 2794 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2795 0); 2796 if (error != 0) { 2797 device_printf(sc->sc_dev, 2798 "could not configure bluetooth coexistence\n"); 2799 return error; 2800 } 2801 2802 /* configure adapter */ 2803 memset(&sc->config, 0, sizeof (struct wpi_config)); 2804 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2805 /*set default channel*/ 2806 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2807 sc->config.flags = htole32(WPI_CONFIG_TSF); 2808 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2809 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2810 WPI_CONFIG_24GHZ); 2811 } 2812 sc->config.filter = 0; 2813 switch (ic->ic_opmode) { 2814 case IEEE80211_M_STA: 2815 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2816 sc->config.mode = WPI_MODE_STA; 2817 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2818 break; 2819 case IEEE80211_M_IBSS: 2820 case IEEE80211_M_AHDEMO: 2821 sc->config.mode = WPI_MODE_IBSS; 2822 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2823 WPI_FILTER_MULTICAST); 2824 break; 2825 case IEEE80211_M_HOSTAP: 2826 sc->config.mode = WPI_MODE_HOSTAP; 2827 break; 2828 case IEEE80211_M_MONITOR: 2829 sc->config.mode = WPI_MODE_MONITOR; 2830 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2831 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2832 break; 2833 default: 2834 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2835 return EINVAL; 2836 } 2837 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2838 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2839 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2840 sizeof (struct wpi_config), 0); 2841 if (error != 0) { 2842 device_printf(sc->sc_dev, "configure command failed\n"); 2843 return error; 2844 } 2845 2846 /* configuration has changed, set Tx power accordingly */ 2847 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2848 device_printf(sc->sc_dev, "could not set Tx power\n"); 2849 return error; 2850 } 2851 2852 /* add broadcast node */ 2853 memset(&node, 0, sizeof node); 2854 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2855 node.id = WPI_ID_BROADCAST; 2856 node.rate = wpi_plcp_signal(2); 2857 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2858 if (error != 0) { 2859 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2860 return error; 2861 } 2862 2863 /* Setup rate scalling */ 2864 error = wpi_mrr_setup(sc); 2865 if (error != 0) { 2866 device_printf(sc->sc_dev, "could not setup MRR\n"); 2867 return error; 2868 } 2869 2870 return 0; 2871 } 2872 2873 static void 2874 wpi_stop_master(struct wpi_softc *sc) 2875 { 2876 uint32_t tmp; 2877 int ntries; 2878 2879 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2880 2881 tmp = WPI_READ(sc, WPI_RESET); 2882 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2883 2884 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2885 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2886 return; /* already asleep */ 2887 2888 for (ntries = 0; ntries < 100; ntries++) { 2889 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2890 break; 2891 DELAY(10); 2892 } 2893 if (ntries == 100) { 2894 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2895 } 2896 } 2897 2898 static int 2899 wpi_power_up(struct wpi_softc *sc) 2900 { 2901 uint32_t tmp; 2902 int ntries; 2903 2904 wpi_mem_lock(sc); 2905 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2906 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2907 wpi_mem_unlock(sc); 2908 2909 for (ntries = 0; ntries < 5000; ntries++) { 2910 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2911 break; 2912 DELAY(10); 2913 } 2914 if (ntries == 5000) { 2915 device_printf(sc->sc_dev, 2916 "timeout waiting for NIC to power up\n"); 2917 return ETIMEDOUT; 2918 } 2919 return 0; 2920 } 2921 2922 static int 2923 wpi_reset(struct wpi_softc *sc) 2924 { 2925 uint32_t tmp; 2926 int ntries; 2927 2928 DPRINTFN(WPI_DEBUG_HW, 2929 ("Resetting the card - clearing any uploaded firmware\n")); 2930 2931 /* clear any pending interrupts */ 2932 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2933 2934 tmp = WPI_READ(sc, WPI_PLL_CTL); 2935 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2936 2937 tmp = WPI_READ(sc, WPI_CHICKEN); 2938 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2939 2940 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2941 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2942 2943 /* wait for clock stabilization */ 2944 for (ntries = 0; ntries < 25000; ntries++) { 2945 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2946 break; 2947 DELAY(10); 2948 } 2949 if (ntries == 25000) { 2950 device_printf(sc->sc_dev, 2951 "timeout waiting for clock stabilization\n"); 2952 return ETIMEDOUT; 2953 } 2954 2955 /* initialize EEPROM */ 2956 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2957 2958 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2959 device_printf(sc->sc_dev, "EEPROM not found\n"); 2960 return EIO; 2961 } 2962 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2963 2964 return 0; 2965 } 2966 2967 static void 2968 wpi_hw_config(struct wpi_softc *sc) 2969 { 2970 uint32_t rev, hw; 2971 2972 /* voodoo from the Linux "driver".. */ 2973 hw = WPI_READ(sc, WPI_HWCONFIG); 2974 2975 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2976 if ((rev & 0xc0) == 0x40) 2977 hw |= WPI_HW_ALM_MB; 2978 else if (!(rev & 0x80)) 2979 hw |= WPI_HW_ALM_MM; 2980 2981 if (sc->cap == 0x80) 2982 hw |= WPI_HW_SKU_MRC; 2983 2984 hw &= ~WPI_HW_REV_D; 2985 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2986 hw |= WPI_HW_REV_D; 2987 2988 if (sc->type > 1) 2989 hw |= WPI_HW_TYPE_B; 2990 2991 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2992 } 2993 2994 static void 2995 wpi_rfkill_resume(struct wpi_softc *sc) 2996 { 2997 struct ifnet *ifp = sc->sc_ifp; 2998 struct ieee80211com *ic = ifp->if_l2com; 2999 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3000 int ntries; 3001 3002 /* enable firmware again */ 3003 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3004 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3005 3006 /* wait for thermal sensors to calibrate */ 3007 for (ntries = 0; ntries < 1000; ntries++) { 3008 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3009 break; 3010 DELAY(10); 3011 } 3012 3013 if (ntries == 1000) { 3014 device_printf(sc->sc_dev, 3015 "timeout waiting for thermal calibration\n"); 3016 return; 3017 } 3018 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3019 3020 if (wpi_config(sc) != 0) { 3021 device_printf(sc->sc_dev, "device config failed\n"); 3022 return; 3023 } 3024 3025 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3026 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3027 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3028 3029 if (vap != NULL) { 3030 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3031 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3032 ieee80211_beacon_miss(ic); 3033 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3034 } else 3035 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3036 } else { 3037 ieee80211_scan_next(vap); 3038 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3039 } 3040 } 3041 3042 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3043 } 3044 3045 static void 3046 wpi_init_locked(struct wpi_softc *sc, int force) 3047 { 3048 struct ifnet *ifp = sc->sc_ifp; 3049 uint32_t tmp; 3050 int ntries, qid; 3051 3052 wpi_stop_locked(sc); 3053 (void)wpi_reset(sc); 3054 3055 wpi_mem_lock(sc); 3056 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3057 DELAY(20); 3058 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3059 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3060 wpi_mem_unlock(sc); 3061 3062 (void)wpi_power_up(sc); 3063 wpi_hw_config(sc); 3064 3065 /* init Rx ring */ 3066 wpi_mem_lock(sc); 3067 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3068 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3069 offsetof(struct wpi_shared, next)); 3070 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3071 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3072 wpi_mem_unlock(sc); 3073 3074 /* init Tx rings */ 3075 wpi_mem_lock(sc); 3076 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3077 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3078 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3079 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3080 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3081 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3082 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3083 3084 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3085 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3086 3087 for (qid = 0; qid < 6; qid++) { 3088 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3089 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3090 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3091 } 3092 wpi_mem_unlock(sc); 3093 3094 /* clear "radio off" and "disable command" bits (reversed logic) */ 3095 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3096 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3097 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3098 3099 /* clear any pending interrupts */ 3100 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3101 3102 /* enable interrupts */ 3103 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3104 3105 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3106 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3107 3108 if ((wpi_load_firmware(sc)) != 0) { 3109 device_printf(sc->sc_dev, 3110 "A problem occurred loading the firmware to the driver\n"); 3111 return; 3112 } 3113 3114 /* At this point the firmware is up and running. If the hardware 3115 * RF switch is turned off thermal calibration will fail, though 3116 * the card is still happy to continue to accept commands, catch 3117 * this case and schedule a task to watch for it to be turned on. 3118 */ 3119 wpi_mem_lock(sc); 3120 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3121 wpi_mem_unlock(sc); 3122 3123 if (!(tmp & 0x1)) { 3124 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3125 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3126 goto out; 3127 } 3128 3129 /* wait for thermal sensors to calibrate */ 3130 for (ntries = 0; ntries < 1000; ntries++) { 3131 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3132 break; 3133 DELAY(10); 3134 } 3135 3136 if (ntries == 1000) { 3137 device_printf(sc->sc_dev, 3138 "timeout waiting for thermal sensors calibration\n"); 3139 return; 3140 } 3141 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3142 3143 if (wpi_config(sc) != 0) { 3144 device_printf(sc->sc_dev, "device config failed\n"); 3145 return; 3146 } 3147 3148 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3149 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3150 out: 3151 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3152 } 3153 3154 static void 3155 wpi_init(void *arg) 3156 { 3157 struct wpi_softc *sc = arg; 3158 struct ifnet *ifp = sc->sc_ifp; 3159 struct ieee80211com *ic = ifp->if_l2com; 3160 3161 WPI_LOCK(sc); 3162 wpi_init_locked(sc, 0); 3163 WPI_UNLOCK(sc); 3164 3165 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3166 ieee80211_start_all(ic); /* start all vaps */ 3167 } 3168 3169 static void 3170 wpi_stop_locked(struct wpi_softc *sc) 3171 { 3172 struct ifnet *ifp = sc->sc_ifp; 3173 uint32_t tmp; 3174 int ac; 3175 3176 sc->sc_tx_timer = 0; 3177 sc->sc_scan_timer = 0; 3178 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3179 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3180 callout_stop(&sc->watchdog_to); 3181 callout_stop(&sc->calib_to); 3182 3183 3184 /* disable interrupts */ 3185 WPI_WRITE(sc, WPI_MASK, 0); 3186 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3187 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3188 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3189 3190 wpi_mem_lock(sc); 3191 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3192 wpi_mem_unlock(sc); 3193 3194 /* reset all Tx rings */ 3195 for (ac = 0; ac < 4; ac++) 3196 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3197 wpi_reset_tx_ring(sc, &sc->cmdq); 3198 3199 /* reset Rx ring */ 3200 wpi_reset_rx_ring(sc, &sc->rxq); 3201 3202 wpi_mem_lock(sc); 3203 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3204 wpi_mem_unlock(sc); 3205 3206 DELAY(5); 3207 3208 wpi_stop_master(sc); 3209 3210 tmp = WPI_READ(sc, WPI_RESET); 3211 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3212 sc->flags &= ~WPI_FLAG_BUSY; 3213 } 3214 3215 static void 3216 wpi_stop(struct wpi_softc *sc) 3217 { 3218 WPI_LOCK(sc); 3219 wpi_stop_locked(sc); 3220 WPI_UNLOCK(sc); 3221 } 3222 3223 static void 3224 wpi_newassoc(struct ieee80211_node *ni, int isnew) 3225 { 3226 3227 /* XXX move */ 3228 ieee80211_ratectl_node_init(ni); 3229 } 3230 3231 static void 3232 wpi_calib_timeout(void *arg) 3233 { 3234 struct wpi_softc *sc = arg; 3235 struct ifnet *ifp = sc->sc_ifp; 3236 struct ieee80211com *ic = ifp->if_l2com; 3237 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3238 int temp; 3239 3240 if (vap->iv_state != IEEE80211_S_RUN) 3241 return; 3242 3243 /* update sensor data */ 3244 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3245 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3246 3247 wpi_power_calibration(sc, temp); 3248 3249 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3250 } 3251 3252 /* 3253 * This function is called periodically (every 60 seconds) to adjust output 3254 * power to temperature changes. 3255 */ 3256 static void 3257 wpi_power_calibration(struct wpi_softc *sc, int temp) 3258 { 3259 struct ifnet *ifp = sc->sc_ifp; 3260 struct ieee80211com *ic = ifp->if_l2com; 3261 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3262 3263 /* sanity-check read value */ 3264 if (temp < -260 || temp > 25) { 3265 /* this can't be correct, ignore */ 3266 DPRINTFN(WPI_DEBUG_TEMP, 3267 ("out-of-range temperature reported: %d\n", temp)); 3268 return; 3269 } 3270 3271 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3272 3273 /* adjust Tx power if need be */ 3274 if (abs(temp - sc->temp) <= 6) 3275 return; 3276 3277 sc->temp = temp; 3278 3279 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3280 /* just warn, too bad for the automatic calibration... */ 3281 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3282 } 3283 } 3284 3285 /** 3286 * Read the eeprom to find out what channels are valid for the given 3287 * band and update net80211 with what we find. 3288 */ 3289 static void 3290 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3291 { 3292 struct ifnet *ifp = sc->sc_ifp; 3293 struct ieee80211com *ic = ifp->if_l2com; 3294 const struct wpi_chan_band *band = &wpi_bands[n]; 3295 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3296 struct ieee80211_channel *c; 3297 int chan, i, passive; 3298 3299 wpi_read_prom_data(sc, band->addr, channels, 3300 band->nchan * sizeof (struct wpi_eeprom_chan)); 3301 3302 for (i = 0; i < band->nchan; i++) { 3303 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3304 DPRINTFN(WPI_DEBUG_HW, 3305 ("Channel Not Valid: %d, band %d\n", 3306 band->chan[i],n)); 3307 continue; 3308 } 3309 3310 passive = 0; 3311 chan = band->chan[i]; 3312 c = &ic->ic_channels[ic->ic_nchans++]; 3313 3314 /* is active scan allowed on this channel? */ 3315 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3316 passive = IEEE80211_CHAN_PASSIVE; 3317 } 3318 3319 if (n == 0) { /* 2GHz band */ 3320 c->ic_ieee = chan; 3321 c->ic_freq = ieee80211_ieee2mhz(chan, 3322 IEEE80211_CHAN_2GHZ); 3323 c->ic_flags = IEEE80211_CHAN_B | passive; 3324 3325 c = &ic->ic_channels[ic->ic_nchans++]; 3326 c->ic_ieee = chan; 3327 c->ic_freq = ieee80211_ieee2mhz(chan, 3328 IEEE80211_CHAN_2GHZ); 3329 c->ic_flags = IEEE80211_CHAN_G | passive; 3330 3331 } else { /* 5GHz band */ 3332 /* 3333 * Some 3945ABG adapters support channels 7, 8, 11 3334 * and 12 in the 2GHz *and* 5GHz bands. 3335 * Because of limitations in our net80211(9) stack, 3336 * we can't support these channels in 5GHz band. 3337 * XXX not true; just need to map to proper frequency 3338 */ 3339 if (chan <= 14) 3340 continue; 3341 3342 c->ic_ieee = chan; 3343 c->ic_freq = ieee80211_ieee2mhz(chan, 3344 IEEE80211_CHAN_5GHZ); 3345 c->ic_flags = IEEE80211_CHAN_A | passive; 3346 } 3347 3348 /* save maximum allowed power for this channel */ 3349 sc->maxpwr[chan] = channels[i].maxpwr; 3350 3351 #if 0 3352 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3353 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3354 //ic->ic_channels[chan].ic_minpower... 3355 //ic->ic_channels[chan].ic_maxregtxpower... 3356 #endif 3357 3358 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3359 " passive=%d, offset %d\n", chan, c->ic_freq, 3360 channels[i].flags, sc->maxpwr[chan], 3361 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3362 ic->ic_nchans)); 3363 } 3364 } 3365 3366 static void 3367 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3368 { 3369 struct wpi_power_group *group = &sc->groups[n]; 3370 struct wpi_eeprom_group rgroup; 3371 int i; 3372 3373 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3374 sizeof rgroup); 3375 3376 /* save power group information */ 3377 group->chan = rgroup.chan; 3378 group->maxpwr = rgroup.maxpwr; 3379 /* temperature at which the samples were taken */ 3380 group->temp = (int16_t)le16toh(rgroup.temp); 3381 3382 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3383 group->chan, group->maxpwr, group->temp)); 3384 3385 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3386 group->samples[i].index = rgroup.samples[i].index; 3387 group->samples[i].power = rgroup.samples[i].power; 3388 3389 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3390 group->samples[i].index, group->samples[i].power)); 3391 } 3392 } 3393 3394 /* 3395 * Update Tx power to match what is defined for channel `c'. 3396 */ 3397 static int 3398 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3399 { 3400 struct ifnet *ifp = sc->sc_ifp; 3401 struct ieee80211com *ic = ifp->if_l2com; 3402 struct wpi_power_group *group; 3403 struct wpi_cmd_txpower txpower; 3404 u_int chan; 3405 int i; 3406 3407 /* get channel number */ 3408 chan = ieee80211_chan2ieee(ic, c); 3409 3410 /* find the power group to which this channel belongs */ 3411 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3412 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3413 if (chan <= group->chan) 3414 break; 3415 } else 3416 group = &sc->groups[0]; 3417 3418 memset(&txpower, 0, sizeof txpower); 3419 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3420 txpower.channel = htole16(chan); 3421 3422 /* set Tx power for all OFDM and CCK rates */ 3423 for (i = 0; i <= 11 ; i++) { 3424 /* retrieve Tx power for this channel/rate combination */ 3425 int idx = wpi_get_power_index(sc, group, c, 3426 wpi_ridx_to_rate[i]); 3427 3428 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3429 3430 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3431 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3432 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3433 } else { 3434 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3435 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3436 } 3437 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3438 chan, wpi_ridx_to_rate[i], idx)); 3439 } 3440 3441 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3442 } 3443 3444 /* 3445 * Determine Tx power index for a given channel/rate combination. 3446 * This takes into account the regulatory information from EEPROM and the 3447 * current temperature. 3448 */ 3449 static int 3450 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3451 struct ieee80211_channel *c, int rate) 3452 { 3453 /* fixed-point arithmetic division using a n-bit fractional part */ 3454 #define fdivround(a, b, n) \ 3455 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3456 3457 /* linear interpolation */ 3458 #define interpolate(x, x1, y1, x2, y2, n) \ 3459 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3460 3461 struct ifnet *ifp = sc->sc_ifp; 3462 struct ieee80211com *ic = ifp->if_l2com; 3463 struct wpi_power_sample *sample; 3464 int pwr, idx; 3465 u_int chan; 3466 3467 /* get channel number */ 3468 chan = ieee80211_chan2ieee(ic, c); 3469 3470 /* default power is group's maximum power - 3dB */ 3471 pwr = group->maxpwr / 2; 3472 3473 /* decrease power for highest OFDM rates to reduce distortion */ 3474 switch (rate) { 3475 case 72: /* 36Mb/s */ 3476 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3477 break; 3478 case 96: /* 48Mb/s */ 3479 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3480 break; 3481 case 108: /* 54Mb/s */ 3482 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3483 break; 3484 } 3485 3486 /* never exceed channel's maximum allowed Tx power */ 3487 pwr = min(pwr, sc->maxpwr[chan]); 3488 3489 /* retrieve power index into gain tables from samples */ 3490 for (sample = group->samples; sample < &group->samples[3]; sample++) 3491 if (pwr > sample[1].power) 3492 break; 3493 /* fixed-point linear interpolation using a 19-bit fractional part */ 3494 idx = interpolate(pwr, sample[0].power, sample[0].index, 3495 sample[1].power, sample[1].index, 19); 3496 3497 /* 3498 * Adjust power index based on current temperature 3499 * - if colder than factory-calibrated: decreate output power 3500 * - if warmer than factory-calibrated: increase output power 3501 */ 3502 idx -= (sc->temp - group->temp) * 11 / 100; 3503 3504 /* decrease power for CCK rates (-5dB) */ 3505 if (!WPI_RATE_IS_OFDM(rate)) 3506 idx += 10; 3507 3508 /* keep power index in a valid range */ 3509 if (idx < 0) 3510 return 0; 3511 if (idx > WPI_MAX_PWR_INDEX) 3512 return WPI_MAX_PWR_INDEX; 3513 return idx; 3514 3515 #undef interpolate 3516 #undef fdivround 3517 } 3518 3519 /** 3520 * Called by net80211 framework to indicate that a scan 3521 * is starting. This function doesn't actually do the scan, 3522 * wpi_scan_curchan starts things off. This function is more 3523 * of an early warning from the framework we should get ready 3524 * for the scan. 3525 */ 3526 static void 3527 wpi_scan_start(struct ieee80211com *ic) 3528 { 3529 struct ifnet *ifp = ic->ic_ifp; 3530 struct wpi_softc *sc = ifp->if_softc; 3531 3532 WPI_LOCK(sc); 3533 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3534 WPI_UNLOCK(sc); 3535 } 3536 3537 /** 3538 * Called by the net80211 framework, indicates that the 3539 * scan has ended. If there is a scan in progress on the card 3540 * then it should be aborted. 3541 */ 3542 static void 3543 wpi_scan_end(struct ieee80211com *ic) 3544 { 3545 /* XXX ignore */ 3546 } 3547 3548 /** 3549 * Called by the net80211 framework to indicate to the driver 3550 * that the channel should be changed 3551 */ 3552 static void 3553 wpi_set_channel(struct ieee80211com *ic) 3554 { 3555 struct ifnet *ifp = ic->ic_ifp; 3556 struct wpi_softc *sc = ifp->if_softc; 3557 int error; 3558 3559 /* 3560 * Only need to set the channel in Monitor mode. AP scanning and auth 3561 * are already taken care of by their respective firmware commands. 3562 */ 3563 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3564 WPI_LOCK(sc); 3565 error = wpi_config(sc); 3566 WPI_UNLOCK(sc); 3567 if (error != 0) 3568 device_printf(sc->sc_dev, 3569 "error %d settting channel\n", error); 3570 } 3571 } 3572 3573 /** 3574 * Called by net80211 to indicate that we need to scan the current 3575 * channel. The channel is previously be set via the wpi_set_channel 3576 * callback. 3577 */ 3578 static void 3579 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3580 { 3581 struct ieee80211vap *vap = ss->ss_vap; 3582 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3583 struct wpi_softc *sc = ifp->if_softc; 3584 3585 WPI_LOCK(sc); 3586 if (wpi_scan(sc)) 3587 ieee80211_cancel_scan(vap); 3588 WPI_UNLOCK(sc); 3589 } 3590 3591 /** 3592 * Called by the net80211 framework to indicate 3593 * the minimum dwell time has been met, terminate the scan. 3594 * We don't actually terminate the scan as the firmware will notify 3595 * us when it's finished and we have no way to interrupt it. 3596 */ 3597 static void 3598 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3599 { 3600 /* NB: don't try to abort scan; wait for firmware to finish */ 3601 } 3602 3603 static void 3604 wpi_hwreset(void *arg, int pending) 3605 { 3606 struct wpi_softc *sc = arg; 3607 3608 WPI_LOCK(sc); 3609 wpi_init_locked(sc, 0); 3610 WPI_UNLOCK(sc); 3611 } 3612 3613 static void 3614 wpi_rfreset(void *arg, int pending) 3615 { 3616 struct wpi_softc *sc = arg; 3617 3618 WPI_LOCK(sc); 3619 wpi_rfkill_resume(sc); 3620 WPI_UNLOCK(sc); 3621 } 3622 3623 /* 3624 * Allocate DMA-safe memory for firmware transfer. 3625 */ 3626 static int 3627 wpi_alloc_fwmem(struct wpi_softc *sc) 3628 { 3629 /* allocate enough contiguous space to store text and data */ 3630 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3631 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3632 BUS_DMA_NOWAIT); 3633 } 3634 3635 static void 3636 wpi_free_fwmem(struct wpi_softc *sc) 3637 { 3638 wpi_dma_contig_free(&sc->fw_dma); 3639 } 3640 3641 /** 3642 * Called every second, wpi_watchdog used by the watch dog timer 3643 * to check that the card is still alive 3644 */ 3645 static void 3646 wpi_watchdog(void *arg) 3647 { 3648 struct wpi_softc *sc = arg; 3649 struct ifnet *ifp = sc->sc_ifp; 3650 struct ieee80211com *ic = ifp->if_l2com; 3651 uint32_t tmp; 3652 3653 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3654 3655 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3656 /* No need to lock firmware memory */ 3657 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3658 3659 if ((tmp & 0x1) == 0) { 3660 /* Radio kill switch is still off */ 3661 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3662 return; 3663 } 3664 3665 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3666 ieee80211_runtask(ic, &sc->sc_radiotask); 3667 return; 3668 } 3669 3670 if (sc->sc_tx_timer > 0) { 3671 if (--sc->sc_tx_timer == 0) { 3672 device_printf(sc->sc_dev,"device timeout\n"); 3673 ifp->if_oerrors++; 3674 ieee80211_runtask(ic, &sc->sc_restarttask); 3675 } 3676 } 3677 if (sc->sc_scan_timer > 0) { 3678 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3679 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3680 device_printf(sc->sc_dev,"scan timeout\n"); 3681 ieee80211_cancel_scan(vap); 3682 ieee80211_runtask(ic, &sc->sc_restarttask); 3683 } 3684 } 3685 3686 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3687 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3688 } 3689 3690 #ifdef WPI_DEBUG 3691 static const char *wpi_cmd_str(int cmd) 3692 { 3693 switch (cmd) { 3694 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3695 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3696 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3697 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3698 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3699 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3700 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3701 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3702 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3703 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3704 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3705 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3706 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3707 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3708 3709 default: 3710 KASSERT(1, ("Unknown Command: %d\n", cmd)); 3711 return "UNKNOWN CMD"; /* Make the compiler happy */ 3712 } 3713 } 3714 #endif 3715 3716 MODULE_DEPEND(wpi, pci, 1, 1, 1); 3717 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3718 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3719