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 97 #include <netinet/in.h> 98 #include <netinet/in_systm.h> 99 #include <netinet/in_var.h> 100 #include <netinet/ip.h> 101 #include <netinet/if_ether.h> 102 103 #include <dev/wpi/if_wpireg.h> 104 #include <dev/wpi/if_wpivar.h> 105 106 #define WPI_DEBUG 107 108 #ifdef WPI_DEBUG 109 #define DPRINTF(x) do { if (wpi_debug != 0) printf x; } while (0) 110 #define DPRINTFN(n, x) do { if (wpi_debug & n) printf x; } while (0) 111 112 enum { 113 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ 114 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ 115 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ 116 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ 117 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ 118 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ 119 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ 120 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ 121 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ 122 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ 123 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ 124 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ 125 WPI_DEBUG_ANY = 0xffffffff 126 }; 127 128 int wpi_debug = 0; 129 SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level"); 130 131 #else 132 #define DPRINTF(x) 133 #define DPRINTFN(n, x) 134 #endif 135 136 struct wpi_ident { 137 uint16_t vendor; 138 uint16_t device; 139 uint16_t subdevice; 140 const char *name; 141 }; 142 143 static const struct wpi_ident wpi_ident_table[] = { 144 /* The below entries support ABG regardless of the subid */ 145 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 146 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 147 /* The below entries only support BG */ 148 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945AB" }, 149 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945AB" }, 150 { 0x8086, 0x4222, 0x1014, "Intel(R) PRO/Wireless 3945AB" }, 151 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945AB" }, 152 { 0, 0, 0, NULL } 153 }; 154 155 static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 156 const char name[IFNAMSIZ], int unit, int opmode, 157 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 158 const uint8_t mac[IEEE80211_ADDR_LEN]); 159 static void wpi_vap_delete(struct ieee80211vap *); 160 static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 161 void **, bus_size_t, bus_size_t, int); 162 static void wpi_dma_contig_free(struct wpi_dma_info *); 163 static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 164 static int wpi_alloc_shared(struct wpi_softc *); 165 static void wpi_free_shared(struct wpi_softc *); 166 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 167 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 168 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 169 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 170 int, int); 171 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 172 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 173 static struct ieee80211_node *wpi_node_alloc(struct ieee80211_node_table *); 174 static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 175 static void wpi_mem_lock(struct wpi_softc *); 176 static void wpi_mem_unlock(struct wpi_softc *); 177 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 178 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 179 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 180 const uint32_t *, int); 181 static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 182 static int wpi_alloc_fwmem(struct wpi_softc *); 183 static void wpi_free_fwmem(struct wpi_softc *); 184 static int wpi_load_firmware(struct wpi_softc *); 185 static void wpi_unload_firmware(struct wpi_softc *); 186 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 187 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 188 struct wpi_rx_data *); 189 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 190 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 191 static void wpi_bmiss(void *, int); 192 static void wpi_notif_intr(struct wpi_softc *); 193 static void wpi_intr(void *); 194 static void wpi_ops(void *, int); 195 static uint8_t wpi_plcp_signal(int); 196 static int wpi_queue_cmd(struct wpi_softc *, int, int, int); 197 static void wpi_watchdog(void *); 198 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 199 struct ieee80211_node *, int); 200 static void wpi_start(struct ifnet *); 201 static void wpi_start_locked(struct ifnet *); 202 static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 203 const struct ieee80211_bpf_params *); 204 static void wpi_scan_start(struct ieee80211com *); 205 static void wpi_scan_end(struct ieee80211com *); 206 static void wpi_set_channel(struct ieee80211com *); 207 static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 208 static void wpi_scan_mindwell(struct ieee80211_scan_state *); 209 static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 210 static void wpi_read_eeprom(struct wpi_softc *); 211 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 212 static void wpi_read_eeprom_group(struct wpi_softc *, int); 213 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 214 static int wpi_wme_update(struct ieee80211com *); 215 static int wpi_mrr_setup(struct wpi_softc *); 216 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 217 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 218 #if 0 219 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 220 #endif 221 static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 222 static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 223 static int wpi_scan(struct wpi_softc *); 224 static int wpi_config(struct wpi_softc *); 225 static void wpi_stop_master(struct wpi_softc *); 226 static int wpi_power_up(struct wpi_softc *); 227 static int wpi_reset(struct wpi_softc *); 228 static void wpi_hw_config(struct wpi_softc *); 229 static void wpi_init(void *); 230 static void wpi_init_locked(struct wpi_softc *, int); 231 static void wpi_stop(struct wpi_softc *); 232 static void wpi_stop_locked(struct wpi_softc *); 233 234 static void wpi_newassoc(struct ieee80211_node *, int); 235 static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 236 int); 237 static void wpi_calib_timeout(void *); 238 static void wpi_power_calibration(struct wpi_softc *, int); 239 static int wpi_get_power_index(struct wpi_softc *, 240 struct wpi_power_group *, struct ieee80211_channel *, int); 241 static const char *wpi_cmd_str(int); 242 static int wpi_probe(device_t); 243 static int wpi_attach(device_t); 244 static int wpi_detach(device_t); 245 static int wpi_shutdown(device_t); 246 static int wpi_suspend(device_t); 247 static int wpi_resume(device_t); 248 249 250 static device_method_t wpi_methods[] = { 251 /* Device interface */ 252 DEVMETHOD(device_probe, wpi_probe), 253 DEVMETHOD(device_attach, wpi_attach), 254 DEVMETHOD(device_detach, wpi_detach), 255 DEVMETHOD(device_shutdown, wpi_shutdown), 256 DEVMETHOD(device_suspend, wpi_suspend), 257 DEVMETHOD(device_resume, wpi_resume), 258 259 { 0, 0 } 260 }; 261 262 static driver_t wpi_driver = { 263 "wpi", 264 wpi_methods, 265 sizeof (struct wpi_softc) 266 }; 267 268 static devclass_t wpi_devclass; 269 270 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0); 271 272 static const uint8_t wpi_ridx_to_plcp[] = { 273 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 274 /* R1-R4 (ral/ural is R4-R1) */ 275 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 276 /* CCK: device-dependent */ 277 10, 20, 55, 110 278 }; 279 static const uint8_t wpi_ridx_to_rate[] = { 280 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 281 2, 4, 11, 22 /*CCK */ 282 }; 283 284 285 static int 286 wpi_probe(device_t dev) 287 { 288 const struct wpi_ident *ident; 289 290 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 291 if (pci_get_vendor(dev) == ident->vendor && 292 pci_get_device(dev) == ident->device) { 293 device_set_desc(dev, ident->name); 294 return 0; 295 } 296 } 297 return ENXIO; 298 } 299 300 /** 301 * Load the firmare image from disk to the allocated dma buffer. 302 * we also maintain the reference to the firmware pointer as there 303 * is times where we may need to reload the firmware but we are not 304 * in a context that can access the filesystem (ie taskq cause by restart) 305 * 306 * @return 0 on success, an errno on failure 307 */ 308 static int 309 wpi_load_firmware(struct wpi_softc *sc) 310 { 311 const struct firmware *fp; 312 struct wpi_dma_info *dma = &sc->fw_dma; 313 const struct wpi_firmware_hdr *hdr; 314 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 315 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 316 int error; 317 318 DPRINTFN(WPI_DEBUG_FIRMWARE, 319 ("Attempting Loading Firmware from wpi_fw module\n")); 320 321 WPI_UNLOCK(sc); 322 323 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 324 device_printf(sc->sc_dev, 325 "could not load firmware image 'wpifw'\n"); 326 error = ENOENT; 327 WPI_LOCK(sc); 328 goto fail; 329 } 330 331 fp = sc->fw_fp; 332 333 WPI_LOCK(sc); 334 335 /* Validate the firmware is minimum a particular version */ 336 if (fp->version < WPI_FW_MINVERSION) { 337 device_printf(sc->sc_dev, 338 "firmware version is too old. Need %d, got %d\n", 339 WPI_FW_MINVERSION, 340 fp->version); 341 error = ENXIO; 342 goto fail; 343 } 344 345 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 346 device_printf(sc->sc_dev, 347 "firmware file too short: %zu bytes\n", fp->datasize); 348 error = ENXIO; 349 goto fail; 350 } 351 352 hdr = (const struct wpi_firmware_hdr *)fp->data; 353 354 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 355 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 356 357 rtextsz = le32toh(hdr->rtextsz); 358 rdatasz = le32toh(hdr->rdatasz); 359 itextsz = le32toh(hdr->itextsz); 360 idatasz = le32toh(hdr->idatasz); 361 btextsz = le32toh(hdr->btextsz); 362 363 /* check that all firmware segments are present */ 364 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 365 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 366 device_printf(sc->sc_dev, 367 "firmware file too short: %zu bytes\n", fp->datasize); 368 error = ENXIO; /* XXX appropriate error code? */ 369 goto fail; 370 } 371 372 /* get pointers to firmware segments */ 373 rtext = (const uint8_t *)(hdr + 1); 374 rdata = rtext + rtextsz; 375 itext = rdata + rdatasz; 376 idata = itext + itextsz; 377 btext = idata + idatasz; 378 379 DPRINTFN(WPI_DEBUG_FIRMWARE, 380 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 381 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 382 (le32toh(hdr->version) & 0xff000000) >> 24, 383 (le32toh(hdr->version) & 0x00ff0000) >> 16, 384 (le32toh(hdr->version) & 0x0000ffff), 385 rtextsz, rdatasz, 386 itextsz, idatasz, btextsz)); 387 388 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 389 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 390 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 391 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 392 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 393 394 /* sanity checks */ 395 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 396 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 397 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 398 idatasz > WPI_FW_INIT_DATA_MAXSZ || 399 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 400 (btextsz & 3) != 0) { 401 device_printf(sc->sc_dev, "firmware invalid\n"); 402 error = EINVAL; 403 goto fail; 404 } 405 406 /* copy initialization images into pre-allocated DMA-safe memory */ 407 memcpy(dma->vaddr, idata, idatasz); 408 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 409 410 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 411 412 /* tell adapter where to find initialization images */ 413 wpi_mem_lock(sc); 414 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 415 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 416 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 417 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 418 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 419 wpi_mem_unlock(sc); 420 421 /* load firmware boot code */ 422 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 423 device_printf(sc->sc_dev, "Failed to load microcode\n"); 424 goto fail; 425 } 426 427 /* now press "execute" */ 428 WPI_WRITE(sc, WPI_RESET, 0); 429 430 /* wait at most one second for the first alive notification */ 431 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 432 device_printf(sc->sc_dev, 433 "timeout waiting for adapter to initialize\n"); 434 goto fail; 435 } 436 437 /* copy runtime images into pre-allocated DMA-sage memory */ 438 memcpy(dma->vaddr, rdata, rdatasz); 439 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 440 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 441 442 /* tell adapter where to find runtime images */ 443 wpi_mem_lock(sc); 444 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 445 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 446 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 447 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 448 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 449 wpi_mem_unlock(sc); 450 451 /* wait at most one second for the first alive notification */ 452 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 453 device_printf(sc->sc_dev, 454 "timeout waiting for adapter to initialize2\n"); 455 goto fail; 456 } 457 458 DPRINTFN(WPI_DEBUG_FIRMWARE, 459 ("Firmware loaded to driver successfully\n")); 460 return error; 461 fail: 462 wpi_unload_firmware(sc); 463 return error; 464 } 465 466 /** 467 * Free the referenced firmware image 468 */ 469 static void 470 wpi_unload_firmware(struct wpi_softc *sc) 471 { 472 473 if (sc->fw_fp) { 474 WPI_UNLOCK(sc); 475 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 476 WPI_LOCK(sc); 477 sc->fw_fp = NULL; 478 } 479 } 480 481 static int 482 wpi_attach(device_t dev) 483 { 484 struct wpi_softc *sc = device_get_softc(dev); 485 struct ifnet *ifp; 486 struct ieee80211com *ic; 487 int ac, error, supportsa = 1; 488 uint32_t tmp; 489 const struct wpi_ident *ident; 490 491 sc->sc_dev = dev; 492 493 if (bootverbose || wpi_debug) 494 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 495 496 /* 497 * Some card's only support 802.11b/g not a, check to see if 498 * this is one such card. A 0x0 in the subdevice table indicates 499 * the entire subdevice range is to be ignored. 500 */ 501 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 502 if (ident->subdevice && 503 pci_get_subdevice(dev) == ident->subdevice) { 504 supportsa = 0; 505 break; 506 } 507 } 508 509 /* 510 * Create the taskqueues used by the driver. Primarily 511 * sc_tq handles most the task 512 */ 513 sc->sc_tq = taskqueue_create("wpi_taskq", M_NOWAIT | M_ZERO, 514 taskqueue_thread_enqueue, &sc->sc_tq); 515 taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq", 516 device_get_nameunit(dev)); 517 518 /* Create the tasks that can be queued */ 519 TASK_INIT(&sc->sc_opstask, 0, wpi_ops, sc); 520 TASK_INIT(&sc->sc_bmiss_task, 0, wpi_bmiss, sc); 521 522 WPI_LOCK_INIT(sc); 523 WPI_CMD_LOCK_INIT(sc); 524 525 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 526 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 527 528 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 529 device_printf(dev, "chip is in D%d power mode " 530 "-- setting to D0\n", pci_get_powerstate(dev)); 531 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 532 } 533 534 /* disable the retry timeout register */ 535 pci_write_config(dev, 0x41, 0, 1); 536 537 /* enable bus-mastering */ 538 pci_enable_busmaster(dev); 539 540 sc->mem_rid = PCIR_BAR(0); 541 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 542 RF_ACTIVE); 543 if (sc->mem == NULL) { 544 device_printf(dev, "could not allocate memory resource\n"); 545 error = ENOMEM; 546 goto fail; 547 } 548 549 sc->sc_st = rman_get_bustag(sc->mem); 550 sc->sc_sh = rman_get_bushandle(sc->mem); 551 552 sc->irq_rid = 0; 553 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 554 RF_ACTIVE | RF_SHAREABLE); 555 if (sc->irq == NULL) { 556 device_printf(dev, "could not allocate interrupt resource\n"); 557 error = ENOMEM; 558 goto fail; 559 } 560 561 /* 562 * Allocate DMA memory for firmware transfers. 563 */ 564 if ((error = wpi_alloc_fwmem(sc)) != 0) { 565 printf(": could not allocate firmware memory\n"); 566 error = ENOMEM; 567 goto fail; 568 } 569 570 /* 571 * Put adapter into a known state. 572 */ 573 if ((error = wpi_reset(sc)) != 0) { 574 device_printf(dev, "could not reset adapter\n"); 575 goto fail; 576 } 577 578 wpi_mem_lock(sc); 579 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 580 if (bootverbose || wpi_debug) 581 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 582 583 wpi_mem_unlock(sc); 584 585 /* Allocate shared page */ 586 if ((error = wpi_alloc_shared(sc)) != 0) { 587 device_printf(dev, "could not allocate shared page\n"); 588 goto fail; 589 } 590 591 /* tx data queues - 4 for QoS purposes */ 592 for (ac = 0; ac < WME_NUM_AC; ac++) { 593 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 594 if (error != 0) { 595 device_printf(dev, "could not allocate Tx ring %d\n",ac); 596 goto fail; 597 } 598 } 599 600 /* command queue to talk to the card's firmware */ 601 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 602 if (error != 0) { 603 device_printf(dev, "could not allocate command ring\n"); 604 goto fail; 605 } 606 607 /* receive data queue */ 608 error = wpi_alloc_rx_ring(sc, &sc->rxq); 609 if (error != 0) { 610 device_printf(dev, "could not allocate Rx ring\n"); 611 goto fail; 612 } 613 614 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 615 if (ifp == NULL) { 616 device_printf(dev, "can not if_alloc()\n"); 617 error = ENOMEM; 618 goto fail; 619 } 620 ic = ifp->if_l2com; 621 622 ic->ic_ifp = ifp; 623 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 624 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 625 626 /* set device capabilities */ 627 ic->ic_caps = 628 IEEE80211_C_STA /* station mode supported */ 629 | IEEE80211_C_MONITOR /* monitor mode supported */ 630 | IEEE80211_C_TXPMGT /* tx power management */ 631 | IEEE80211_C_SHSLOT /* short slot time supported */ 632 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 633 | IEEE80211_C_WPA /* 802.11i */ 634 /* XXX looks like WME is partly supported? */ 635 #if 0 636 | IEEE80211_C_IBSS /* IBSS mode support */ 637 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 638 | IEEE80211_C_WME /* 802.11e */ 639 | IEEE80211_C_HOSTAP /* Host access point mode */ 640 #endif 641 ; 642 643 /* 644 * Read in the eeprom and also setup the channels for 645 * net80211. We don't set the rates as net80211 does this for us 646 */ 647 wpi_read_eeprom(sc); 648 649 if (bootverbose || wpi_debug) { 650 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 651 device_printf(sc->sc_dev, "Hardware Type: %c\n", 652 sc->type > 1 ? 'B': '?'); 653 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 654 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 655 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 656 supportsa ? "does" : "does not"); 657 658 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 659 what sc->rev really represents - benjsc 20070615 */ 660 } 661 662 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 663 ifp->if_softc = sc; 664 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 665 ifp->if_init = wpi_init; 666 ifp->if_ioctl = wpi_ioctl; 667 ifp->if_start = wpi_start; 668 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 669 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 670 IFQ_SET_READY(&ifp->if_snd); 671 672 ieee80211_ifattach(ic); 673 /* override default methods */ 674 ic->ic_node_alloc = wpi_node_alloc; 675 ic->ic_newassoc = wpi_newassoc; 676 ic->ic_raw_xmit = wpi_raw_xmit; 677 ic->ic_wme.wme_update = wpi_wme_update; 678 ic->ic_scan_start = wpi_scan_start; 679 ic->ic_scan_end = wpi_scan_end; 680 ic->ic_set_channel = wpi_set_channel; 681 ic->ic_scan_curchan = wpi_scan_curchan; 682 ic->ic_scan_mindwell = wpi_scan_mindwell; 683 684 ic->ic_vap_create = wpi_vap_create; 685 ic->ic_vap_delete = wpi_vap_delete; 686 687 bpfattach(ifp, DLT_IEEE802_11_RADIO, 688 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap)); 689 690 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 691 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 692 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 693 694 sc->sc_txtap_len = sizeof sc->sc_txtap; 695 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 696 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 697 698 /* 699 * Hook our interrupt after all initialization is complete. 700 */ 701 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 702 NULL, wpi_intr, sc, &sc->sc_ih); 703 if (error != 0) { 704 device_printf(dev, "could not set up interrupt\n"); 705 goto fail; 706 } 707 708 if (bootverbose) 709 ieee80211_announce(ic); 710 #ifdef XXX_DEBUG 711 ieee80211_announce_channels(ic); 712 #endif 713 return 0; 714 715 fail: wpi_detach(dev); 716 return ENXIO; 717 } 718 719 static int 720 wpi_detach(device_t dev) 721 { 722 struct wpi_softc *sc = device_get_softc(dev); 723 struct ifnet *ifp = sc->sc_ifp; 724 struct ieee80211com *ic = ifp->if_l2com; 725 int ac; 726 727 if (ifp != NULL) { 728 wpi_stop(sc); 729 callout_drain(&sc->watchdog_to); 730 callout_drain(&sc->calib_to); 731 bpfdetach(ifp); 732 ieee80211_ifdetach(ic); 733 } 734 735 WPI_LOCK(sc); 736 if (sc->txq[0].data_dmat) { 737 for (ac = 0; ac < WME_NUM_AC; ac++) 738 wpi_free_tx_ring(sc, &sc->txq[ac]); 739 740 wpi_free_tx_ring(sc, &sc->cmdq); 741 wpi_free_rx_ring(sc, &sc->rxq); 742 wpi_free_shared(sc); 743 } 744 745 if (sc->fw_fp != NULL) { 746 wpi_unload_firmware(sc); 747 } 748 749 if (sc->fw_dma.tag) 750 wpi_free_fwmem(sc); 751 WPI_UNLOCK(sc); 752 753 if (sc->irq != NULL) { 754 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 755 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 756 } 757 758 if (sc->mem != NULL) 759 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 760 761 if (ifp != NULL) 762 if_free(ifp); 763 764 taskqueue_free(sc->sc_tq); 765 766 WPI_LOCK_DESTROY(sc); 767 WPI_CMD_LOCK_DESTROY(sc); 768 769 return 0; 770 } 771 772 static struct ieee80211vap * 773 wpi_vap_create(struct ieee80211com *ic, 774 const char name[IFNAMSIZ], int unit, int opmode, int flags, 775 const uint8_t bssid[IEEE80211_ADDR_LEN], 776 const uint8_t mac[IEEE80211_ADDR_LEN]) 777 { 778 struct wpi_vap *wvp; 779 struct ieee80211vap *vap; 780 781 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 782 return NULL; 783 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 784 M_80211_VAP, M_NOWAIT | M_ZERO); 785 if (wvp == NULL) 786 return NULL; 787 vap = &wvp->vap; 788 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 789 /* override with driver methods */ 790 wvp->newstate = vap->iv_newstate; 791 vap->iv_newstate = wpi_newstate; 792 793 ieee80211_amrr_init(&wvp->amrr, vap, 794 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD, 795 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD, 796 500 /*ms*/); 797 798 /* complete setup */ 799 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 800 ic->ic_opmode = opmode; 801 return vap; 802 } 803 804 static void 805 wpi_vap_delete(struct ieee80211vap *vap) 806 { 807 struct wpi_vap *wvp = WPI_VAP(vap); 808 809 ieee80211_amrr_cleanup(&wvp->amrr); 810 ieee80211_vap_detach(vap); 811 free(wvp, M_80211_VAP); 812 } 813 814 static void 815 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 816 { 817 if (error != 0) 818 return; 819 820 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 821 822 *(bus_addr_t *)arg = segs[0].ds_addr; 823 } 824 825 /* 826 * Allocates a contiguous block of dma memory of the requested size and 827 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 828 * allocations greater than 4096 may fail. Hence if the requested alignment is 829 * greater we allocate 'alignment' size extra memory and shift the vaddr and 830 * paddr after the dma load. This bypasses the problem at the cost of a little 831 * more memory. 832 */ 833 static int 834 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 835 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 836 { 837 int error; 838 bus_size_t align; 839 bus_size_t reqsize; 840 841 DPRINTFN(WPI_DEBUG_DMA, 842 ("Size: %zd - alignment %zd\n", size, alignment)); 843 844 dma->size = size; 845 dma->tag = NULL; 846 847 if (alignment > 4096) { 848 align = PAGE_SIZE; 849 reqsize = size + alignment; 850 } else { 851 align = alignment; 852 reqsize = size; 853 } 854 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 855 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 856 NULL, NULL, reqsize, 857 1, reqsize, flags, 858 NULL, NULL, &dma->tag); 859 if (error != 0) { 860 device_printf(sc->sc_dev, 861 "could not create shared page DMA tag\n"); 862 goto fail; 863 } 864 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 865 flags | BUS_DMA_ZERO, &dma->map); 866 if (error != 0) { 867 device_printf(sc->sc_dev, 868 "could not allocate shared page DMA memory\n"); 869 goto fail; 870 } 871 872 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 873 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 874 875 /* Save the original pointers so we can free all the memory */ 876 dma->paddr = dma->paddr_start; 877 dma->vaddr = dma->vaddr_start; 878 879 /* 880 * Check the alignment and increment by 4096 until we get the 881 * requested alignment. Fail if can't obtain the alignment 882 * we requested. 883 */ 884 if ((dma->paddr & (alignment -1 )) != 0) { 885 int i; 886 887 for (i = 0; i < alignment / 4096; i++) { 888 if ((dma->paddr & (alignment - 1 )) == 0) 889 break; 890 dma->paddr += 4096; 891 dma->vaddr += 4096; 892 } 893 if (i == alignment / 4096) { 894 device_printf(sc->sc_dev, 895 "alignment requirement was not satisfied\n"); 896 goto fail; 897 } 898 } 899 900 if (error != 0) { 901 device_printf(sc->sc_dev, 902 "could not load shared page DMA map\n"); 903 goto fail; 904 } 905 906 if (kvap != NULL) 907 *kvap = dma->vaddr; 908 909 return 0; 910 911 fail: 912 wpi_dma_contig_free(dma); 913 return error; 914 } 915 916 static void 917 wpi_dma_contig_free(struct wpi_dma_info *dma) 918 { 919 if (dma->tag) { 920 if (dma->map != NULL) { 921 if (dma->paddr_start != 0) { 922 bus_dmamap_sync(dma->tag, dma->map, 923 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 924 bus_dmamap_unload(dma->tag, dma->map); 925 } 926 bus_dmamem_free(dma->tag, &dma->vaddr_start, dma->map); 927 } 928 bus_dma_tag_destroy(dma->tag); 929 } 930 } 931 932 /* 933 * Allocate a shared page between host and NIC. 934 */ 935 static int 936 wpi_alloc_shared(struct wpi_softc *sc) 937 { 938 int error; 939 940 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 941 (void **)&sc->shared, sizeof (struct wpi_shared), 942 PAGE_SIZE, 943 BUS_DMA_NOWAIT); 944 945 if (error != 0) { 946 device_printf(sc->sc_dev, 947 "could not allocate shared area DMA memory\n"); 948 } 949 950 return error; 951 } 952 953 static void 954 wpi_free_shared(struct wpi_softc *sc) 955 { 956 wpi_dma_contig_free(&sc->shared_dma); 957 } 958 959 static int 960 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 961 { 962 963 int i, error; 964 965 ring->cur = 0; 966 967 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 968 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 969 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 970 971 if (error != 0) { 972 device_printf(sc->sc_dev, 973 "%s: could not allocate rx ring DMA memory, error %d\n", 974 __func__, error); 975 goto fail; 976 } 977 978 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 979 BUS_SPACE_MAXADDR_32BIT, 980 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 981 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 982 if (error != 0) { 983 device_printf(sc->sc_dev, 984 "%s: bus_dma_tag_create_failed, error %d\n", 985 __func__, error); 986 goto fail; 987 } 988 989 /* 990 * Setup Rx buffers. 991 */ 992 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 993 struct wpi_rx_data *data = &ring->data[i]; 994 struct mbuf *m; 995 bus_addr_t paddr; 996 997 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 998 if (error != 0) { 999 device_printf(sc->sc_dev, 1000 "%s: bus_dmamap_create failed, error %d\n", 1001 __func__, error); 1002 goto fail; 1003 } 1004 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1005 if (m == NULL) { 1006 device_printf(sc->sc_dev, 1007 "%s: could not allocate rx mbuf\n", __func__); 1008 error = ENOMEM; 1009 goto fail; 1010 } 1011 /* map page */ 1012 error = bus_dmamap_load(ring->data_dmat, data->map, 1013 mtod(m, caddr_t), MJUMPAGESIZE, 1014 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1015 if (error != 0 && error != EFBIG) { 1016 device_printf(sc->sc_dev, 1017 "%s: bus_dmamap_load failed, error %d\n", 1018 __func__, error); 1019 m_freem(m); 1020 error = ENOMEM; /* XXX unique code */ 1021 goto fail; 1022 } 1023 bus_dmamap_sync(ring->data_dmat, data->map, 1024 BUS_DMASYNC_PREWRITE); 1025 1026 data->m = m; 1027 ring->desc[i] = htole32(paddr); 1028 } 1029 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1030 BUS_DMASYNC_PREWRITE); 1031 return 0; 1032 fail: 1033 wpi_free_rx_ring(sc, ring); 1034 return error; 1035 } 1036 1037 static void 1038 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1039 { 1040 int ntries; 1041 1042 wpi_mem_lock(sc); 1043 1044 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1045 1046 for (ntries = 0; ntries < 100; ntries++) { 1047 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1048 break; 1049 DELAY(10); 1050 } 1051 1052 wpi_mem_unlock(sc); 1053 1054 #ifdef WPI_DEBUG 1055 if (ntries == 100) 1056 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1057 #endif 1058 1059 ring->cur = 0; 1060 } 1061 1062 static void 1063 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1064 { 1065 int i; 1066 1067 wpi_dma_contig_free(&ring->desc_dma); 1068 1069 for (i = 0; i < WPI_RX_RING_COUNT; i++) 1070 if (ring->data[i].m != NULL) 1071 m_freem(ring->data[i].m); 1072 } 1073 1074 static int 1075 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1076 int qid) 1077 { 1078 struct wpi_tx_data *data; 1079 int i, error; 1080 1081 ring->qid = qid; 1082 ring->count = count; 1083 ring->queued = 0; 1084 ring->cur = 0; 1085 ring->data = NULL; 1086 1087 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1088 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1089 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1090 1091 if (error != 0) { 1092 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1093 goto fail; 1094 } 1095 1096 /* update shared page with ring's base address */ 1097 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1098 1099 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1100 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1101 BUS_DMA_NOWAIT); 1102 1103 if (error != 0) { 1104 device_printf(sc->sc_dev, 1105 "could not allocate tx command DMA memory\n"); 1106 goto fail; 1107 } 1108 1109 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1110 M_NOWAIT | M_ZERO); 1111 if (ring->data == NULL) { 1112 device_printf(sc->sc_dev, 1113 "could not allocate tx data slots\n"); 1114 goto fail; 1115 } 1116 1117 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1118 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1119 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1120 &ring->data_dmat); 1121 if (error != 0) { 1122 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1123 goto fail; 1124 } 1125 1126 for (i = 0; i < count; i++) { 1127 data = &ring->data[i]; 1128 1129 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1130 if (error != 0) { 1131 device_printf(sc->sc_dev, 1132 "could not create tx buf DMA map\n"); 1133 goto fail; 1134 } 1135 bus_dmamap_sync(ring->data_dmat, data->map, 1136 BUS_DMASYNC_PREWRITE); 1137 } 1138 1139 return 0; 1140 1141 fail: 1142 wpi_free_tx_ring(sc, ring); 1143 return error; 1144 } 1145 1146 static void 1147 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1148 { 1149 struct wpi_tx_data *data; 1150 int i, ntries; 1151 1152 wpi_mem_lock(sc); 1153 1154 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1155 for (ntries = 0; ntries < 100; ntries++) { 1156 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1157 break; 1158 DELAY(10); 1159 } 1160 #ifdef WPI_DEBUG 1161 if (ntries == 100) 1162 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1163 ring->qid); 1164 #endif 1165 wpi_mem_unlock(sc); 1166 1167 for (i = 0; i < ring->count; i++) { 1168 data = &ring->data[i]; 1169 1170 if (data->m != NULL) { 1171 bus_dmamap_unload(ring->data_dmat, data->map); 1172 m_freem(data->m); 1173 data->m = NULL; 1174 } 1175 } 1176 1177 ring->queued = 0; 1178 ring->cur = 0; 1179 } 1180 1181 static void 1182 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1183 { 1184 struct wpi_tx_data *data; 1185 int i; 1186 1187 wpi_dma_contig_free(&ring->desc_dma); 1188 wpi_dma_contig_free(&ring->cmd_dma); 1189 1190 if (ring->data != NULL) { 1191 for (i = 0; i < ring->count; i++) { 1192 data = &ring->data[i]; 1193 1194 if (data->m != NULL) { 1195 bus_dmamap_sync(ring->data_dmat, data->map, 1196 BUS_DMASYNC_POSTWRITE); 1197 bus_dmamap_unload(ring->data_dmat, data->map); 1198 m_freem(data->m); 1199 data->m = NULL; 1200 } 1201 } 1202 free(ring->data, M_DEVBUF); 1203 } 1204 1205 if (ring->data_dmat != NULL) 1206 bus_dma_tag_destroy(ring->data_dmat); 1207 } 1208 1209 static int 1210 wpi_shutdown(device_t dev) 1211 { 1212 struct wpi_softc *sc = device_get_softc(dev); 1213 1214 WPI_LOCK(sc); 1215 wpi_stop_locked(sc); 1216 wpi_unload_firmware(sc); 1217 WPI_UNLOCK(sc); 1218 1219 return 0; 1220 } 1221 1222 static int 1223 wpi_suspend(device_t dev) 1224 { 1225 struct wpi_softc *sc = device_get_softc(dev); 1226 1227 wpi_stop(sc); 1228 return 0; 1229 } 1230 1231 static int 1232 wpi_resume(device_t dev) 1233 { 1234 struct wpi_softc *sc = device_get_softc(dev); 1235 struct ifnet *ifp = sc->sc_ifp; 1236 1237 pci_write_config(dev, 0x41, 0, 1); 1238 1239 if (ifp->if_flags & IFF_UP) { 1240 wpi_init(ifp->if_softc); 1241 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1242 wpi_start(ifp); 1243 } 1244 return 0; 1245 } 1246 1247 /* ARGSUSED */ 1248 static struct ieee80211_node * 1249 wpi_node_alloc(struct ieee80211_node_table *ic) 1250 { 1251 struct wpi_node *wn; 1252 1253 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 1254 1255 return &wn->ni; 1256 } 1257 1258 /** 1259 * Called by net80211 when ever there is a change to 80211 state machine 1260 */ 1261 static int 1262 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1263 { 1264 struct wpi_vap *wvp = WPI_VAP(vap); 1265 struct ieee80211com *ic = vap->iv_ic; 1266 struct ifnet *ifp = ic->ic_ifp; 1267 struct wpi_softc *sc = ifp->if_softc; 1268 int error; 1269 1270 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1271 ieee80211_state_name[vap->iv_state], 1272 ieee80211_state_name[nstate], sc->flags)); 1273 1274 if (nstate == IEEE80211_S_AUTH) { 1275 /* Delay the auth transition until we can update the firmware */ 1276 error = wpi_queue_cmd(sc, WPI_AUTH, arg, WPI_QUEUE_NORMAL); 1277 return (error != 0 ? error : EINPROGRESS); 1278 } 1279 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1280 /* set the association id first */ 1281 error = wpi_queue_cmd(sc, WPI_RUN, arg, WPI_QUEUE_NORMAL); 1282 return (error != 0 ? error : EINPROGRESS); 1283 } 1284 if (nstate == IEEE80211_S_RUN) { 1285 /* RUN -> RUN transition; just restart the timers */ 1286 wpi_calib_timeout(sc); 1287 /* XXX split out rate control timer */ 1288 } 1289 return wvp->newstate(vap, nstate, arg); 1290 } 1291 1292 /* 1293 * Grab exclusive access to NIC memory. 1294 */ 1295 static void 1296 wpi_mem_lock(struct wpi_softc *sc) 1297 { 1298 int ntries; 1299 uint32_t tmp; 1300 1301 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1302 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1303 1304 /* spin until we actually get the lock */ 1305 for (ntries = 0; ntries < 100; ntries++) { 1306 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1307 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1308 break; 1309 DELAY(10); 1310 } 1311 if (ntries == 100) 1312 device_printf(sc->sc_dev, "could not lock memory\n"); 1313 } 1314 1315 /* 1316 * Release lock on NIC memory. 1317 */ 1318 static void 1319 wpi_mem_unlock(struct wpi_softc *sc) 1320 { 1321 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1322 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1323 } 1324 1325 static uint32_t 1326 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1327 { 1328 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1329 return WPI_READ(sc, WPI_READ_MEM_DATA); 1330 } 1331 1332 static void 1333 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1334 { 1335 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1336 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1337 } 1338 1339 static void 1340 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1341 const uint32_t *data, int wlen) 1342 { 1343 for (; wlen > 0; wlen--, data++, addr+=4) 1344 wpi_mem_write(sc, addr, *data); 1345 } 1346 1347 /* 1348 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1349 * using the traditional bit-bang method. Data is read up until len bytes have 1350 * been obtained. 1351 */ 1352 static uint16_t 1353 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1354 { 1355 int ntries; 1356 uint32_t val; 1357 uint8_t *out = data; 1358 1359 wpi_mem_lock(sc); 1360 1361 for (; len > 0; len -= 2, addr++) { 1362 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1363 1364 for (ntries = 0; ntries < 10; ntries++) { 1365 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1366 break; 1367 DELAY(5); 1368 } 1369 1370 if (ntries == 10) { 1371 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1372 return ETIMEDOUT; 1373 } 1374 1375 *out++= val >> 16; 1376 if (len > 1) 1377 *out ++= val >> 24; 1378 } 1379 1380 wpi_mem_unlock(sc); 1381 1382 return 0; 1383 } 1384 1385 /* 1386 * The firmware text and data segments are transferred to the NIC using DMA. 1387 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1388 * where to find it. Once the NIC has copied the firmware into its internal 1389 * memory, we can free our local copy in the driver. 1390 */ 1391 static int 1392 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1393 { 1394 int error, ntries; 1395 1396 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1397 1398 size /= sizeof(uint32_t); 1399 1400 wpi_mem_lock(sc); 1401 1402 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1403 (const uint32_t *)fw, size); 1404 1405 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1406 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1407 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1408 1409 /* run microcode */ 1410 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1411 1412 /* wait while the adapter is busy copying the firmware */ 1413 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1414 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1415 DPRINTFN(WPI_DEBUG_HW, 1416 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1417 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1418 if (status & WPI_TX_IDLE(6)) { 1419 DPRINTFN(WPI_DEBUG_HW, 1420 ("Status Match! - ntries = %d\n", ntries)); 1421 break; 1422 } 1423 DELAY(10); 1424 } 1425 if (ntries == 1000) { 1426 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1427 error = ETIMEDOUT; 1428 } 1429 1430 /* start the microcode executing */ 1431 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1432 1433 wpi_mem_unlock(sc); 1434 1435 return (error); 1436 } 1437 1438 static void 1439 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1440 struct wpi_rx_data *data) 1441 { 1442 struct ifnet *ifp = sc->sc_ifp; 1443 struct ieee80211com *ic = ifp->if_l2com; 1444 struct wpi_rx_ring *ring = &sc->rxq; 1445 struct wpi_rx_stat *stat; 1446 struct wpi_rx_head *head; 1447 struct wpi_rx_tail *tail; 1448 struct ieee80211_node *ni; 1449 struct mbuf *m, *mnew; 1450 bus_addr_t paddr; 1451 int error; 1452 1453 stat = (struct wpi_rx_stat *)(desc + 1); 1454 1455 if (stat->len > WPI_STAT_MAXLEN) { 1456 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1457 ifp->if_ierrors++; 1458 return; 1459 } 1460 1461 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1462 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1463 1464 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1465 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1466 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1467 (uintmax_t)le64toh(tail->tstamp))); 1468 1469 /* XXX don't need mbuf, just dma buffer */ 1470 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1471 if (mnew == NULL) { 1472 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1473 __func__)); 1474 ic->ic_stats.is_rx_nobuf++; 1475 ifp->if_ierrors++; 1476 return; 1477 } 1478 error = bus_dmamap_load(ring->data_dmat, data->map, 1479 mtod(mnew, caddr_t), MJUMPAGESIZE, 1480 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1481 if (error != 0 && error != EFBIG) { 1482 device_printf(sc->sc_dev, 1483 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1484 m_freem(mnew); 1485 ic->ic_stats.is_rx_nobuf++; /* XXX need stat */ 1486 ifp->if_ierrors++; 1487 return; 1488 } 1489 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1490 1491 /* finalize mbuf and swap in new one */ 1492 m = data->m; 1493 m->m_pkthdr.rcvif = ifp; 1494 m->m_data = (caddr_t)(head + 1); 1495 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1496 1497 data->m = mnew; 1498 /* update Rx descriptor */ 1499 ring->desc[ring->cur] = htole32(paddr); 1500 1501 if (bpf_peers_present(ifp->if_bpf)) { 1502 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1503 1504 tap->wr_flags = 0; 1505 tap->wr_chan_freq = 1506 htole16(ic->ic_channels[head->chan].ic_freq); 1507 tap->wr_chan_flags = 1508 htole16(ic->ic_channels[head->chan].ic_flags); 1509 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1510 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1511 tap->wr_tsft = tail->tstamp; 1512 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1513 switch (head->rate) { 1514 /* CCK rates */ 1515 case 10: tap->wr_rate = 2; break; 1516 case 20: tap->wr_rate = 4; break; 1517 case 55: tap->wr_rate = 11; break; 1518 case 110: tap->wr_rate = 22; break; 1519 /* OFDM rates */ 1520 case 0xd: tap->wr_rate = 12; break; 1521 case 0xf: tap->wr_rate = 18; break; 1522 case 0x5: tap->wr_rate = 24; break; 1523 case 0x7: tap->wr_rate = 36; break; 1524 case 0x9: tap->wr_rate = 48; break; 1525 case 0xb: tap->wr_rate = 72; break; 1526 case 0x1: tap->wr_rate = 96; break; 1527 case 0x3: tap->wr_rate = 108; break; 1528 /* unknown rate: should not happen */ 1529 default: tap->wr_rate = 0; 1530 } 1531 if (le16toh(head->flags) & 0x4) 1532 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1533 1534 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m); 1535 } 1536 1537 WPI_UNLOCK(sc); 1538 1539 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1540 if (ni != NULL) { 1541 (void) ieee80211_input(ni, m, stat->rssi, 0, 0); 1542 ieee80211_free_node(ni); 1543 } else 1544 (void) ieee80211_input_all(ic, m, stat->rssi, 0, 0); 1545 1546 WPI_LOCK(sc); 1547 } 1548 1549 static void 1550 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1551 { 1552 struct ifnet *ifp = sc->sc_ifp; 1553 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1554 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1555 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1556 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1557 1558 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1559 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1560 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1561 le32toh(stat->status))); 1562 1563 /* 1564 * Update rate control statistics for the node. 1565 * XXX we should not count mgmt frames since they're always sent at 1566 * the lowest available bit-rate. 1567 * XXX frames w/o ACK shouldn't be used either 1568 */ 1569 wn->amn.amn_txcnt++; 1570 if (stat->ntries > 0) { 1571 DPRINTFN(3, ("%d retries\n", stat->ntries)); 1572 wn->amn.amn_retrycnt++; 1573 } 1574 1575 /* XXX oerrors should only count errors !maxtries */ 1576 if ((le32toh(stat->status) & 0xff) != 1) 1577 ifp->if_oerrors++; 1578 else 1579 ifp->if_opackets++; 1580 1581 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1582 bus_dmamap_unload(ring->data_dmat, txdata->map); 1583 /* XXX handle M_TXCB? */ 1584 m_freem(txdata->m); 1585 txdata->m = NULL; 1586 ieee80211_free_node(txdata->ni); 1587 txdata->ni = NULL; 1588 1589 ring->queued--; 1590 1591 sc->sc_tx_timer = 0; 1592 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1593 wpi_start_locked(ifp); 1594 } 1595 1596 static void 1597 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1598 { 1599 struct wpi_tx_ring *ring = &sc->cmdq; 1600 struct wpi_tx_data *data; 1601 1602 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1603 "type=%s len=%d\n", desc->qid, desc->idx, 1604 desc->flags, wpi_cmd_str(desc->type), 1605 le32toh(desc->len))); 1606 1607 if ((desc->qid & 7) != 4) 1608 return; /* not a command ack */ 1609 1610 data = &ring->data[desc->idx]; 1611 1612 /* if the command was mapped in a mbuf, free it */ 1613 if (data->m != NULL) { 1614 bus_dmamap_unload(ring->data_dmat, data->map); 1615 m_freem(data->m); 1616 data->m = NULL; 1617 } 1618 1619 sc->flags &= ~WPI_FLAG_BUSY; 1620 wakeup(&ring->cmd[desc->idx]); 1621 } 1622 1623 static void 1624 wpi_bmiss(void *arg, int npending) 1625 { 1626 struct wpi_softc *sc = arg; 1627 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1628 1629 ieee80211_beacon_miss(ic); 1630 } 1631 1632 static void 1633 wpi_notif_intr(struct wpi_softc *sc) 1634 { 1635 struct ifnet *ifp = sc->sc_ifp; 1636 struct ieee80211com *ic = ifp->if_l2com; 1637 struct wpi_rx_desc *desc; 1638 struct wpi_rx_data *data; 1639 uint32_t hw; 1640 1641 hw = le32toh(sc->shared->next); 1642 while (sc->rxq.cur != hw) { 1643 data = &sc->rxq.data[sc->rxq.cur]; 1644 desc = (void *)data->m->m_ext.ext_buf; 1645 1646 DPRINTFN(WPI_DEBUG_NOTIFY, 1647 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1648 desc->qid, 1649 desc->idx, 1650 desc->flags, 1651 desc->type, 1652 le32toh(desc->len))); 1653 1654 if (!(desc->qid & 0x80)) /* reply to a command */ 1655 wpi_cmd_intr(sc, desc); 1656 1657 switch (desc->type) { 1658 case WPI_RX_DONE: 1659 /* a 802.11 frame was received */ 1660 wpi_rx_intr(sc, desc, data); 1661 break; 1662 1663 case WPI_TX_DONE: 1664 /* a 802.11 frame has been transmitted */ 1665 wpi_tx_intr(sc, desc); 1666 break; 1667 1668 case WPI_UC_READY: 1669 { 1670 struct wpi_ucode_info *uc = 1671 (struct wpi_ucode_info *)(desc + 1); 1672 1673 /* the microcontroller is ready */ 1674 DPRINTF(("microcode alive notification version %x " 1675 "alive %x\n", le32toh(uc->version), 1676 le32toh(uc->valid))); 1677 1678 if (le32toh(uc->valid) != 1) { 1679 device_printf(sc->sc_dev, 1680 "microcontroller initialization failed\n"); 1681 wpi_stop_locked(sc); 1682 } 1683 break; 1684 } 1685 case WPI_STATE_CHANGED: 1686 { 1687 uint32_t *status = (uint32_t *)(desc + 1); 1688 1689 /* enabled/disabled notification */ 1690 DPRINTF(("state changed to %x\n", le32toh(*status))); 1691 1692 if (le32toh(*status) & 1) { 1693 device_printf(sc->sc_dev, 1694 "Radio transmitter is switched off\n"); 1695 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1696 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1697 /* Disable firmware commands */ 1698 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1699 } 1700 break; 1701 } 1702 case WPI_START_SCAN: 1703 { 1704 struct wpi_start_scan *scan = 1705 (struct wpi_start_scan *)(desc + 1); 1706 1707 DPRINTFN(WPI_DEBUG_SCANNING, 1708 ("scanning channel %d status %x\n", 1709 scan->chan, le32toh(scan->status))); 1710 break; 1711 } 1712 case WPI_STOP_SCAN: 1713 { 1714 struct wpi_stop_scan *scan = 1715 (struct wpi_stop_scan *)(desc + 1); 1716 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1717 1718 DPRINTFN(WPI_DEBUG_SCANNING, 1719 ("scan finished nchan=%d status=%d chan=%d\n", 1720 scan->nchan, scan->status, scan->chan)); 1721 1722 sc->sc_scan_timer = 0; 1723 ieee80211_scan_next(vap); 1724 break; 1725 } 1726 case WPI_MISSED_BEACON: 1727 { 1728 struct wpi_missed_beacon *beacon = 1729 (struct wpi_missed_beacon *)(desc + 1); 1730 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1731 1732 if (le32toh(beacon->consecutive) >= 1733 vap->iv_bmissthreshold) { 1734 DPRINTF(("Beacon miss: %u >= %u\n", 1735 le32toh(beacon->consecutive), 1736 vap->iv_bmissthreshold)); 1737 taskqueue_enqueue(taskqueue_swi, 1738 &sc->sc_bmiss_task); 1739 } 1740 break; 1741 } 1742 } 1743 1744 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1745 } 1746 1747 /* tell the firmware what we have processed */ 1748 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1749 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1750 } 1751 1752 static void 1753 wpi_intr(void *arg) 1754 { 1755 struct wpi_softc *sc = arg; 1756 uint32_t r; 1757 1758 WPI_LOCK(sc); 1759 1760 r = WPI_READ(sc, WPI_INTR); 1761 if (r == 0 || r == 0xffffffff) { 1762 WPI_UNLOCK(sc); 1763 return; 1764 } 1765 1766 /* disable interrupts */ 1767 WPI_WRITE(sc, WPI_MASK, 0); 1768 /* ack interrupts */ 1769 WPI_WRITE(sc, WPI_INTR, r); 1770 1771 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1772 device_printf(sc->sc_dev, "fatal firmware error\n"); 1773 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1774 "(Hardware Error)")); 1775 wpi_queue_cmd(sc, WPI_RESTART, 0, WPI_QUEUE_CLEAR); 1776 sc->flags &= ~WPI_FLAG_BUSY; 1777 WPI_UNLOCK(sc); 1778 return; 1779 } 1780 1781 if (r & WPI_RX_INTR) 1782 wpi_notif_intr(sc); 1783 1784 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1785 wakeup(sc); 1786 1787 /* re-enable interrupts */ 1788 if (sc->sc_ifp->if_flags & IFF_UP) 1789 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1790 1791 WPI_UNLOCK(sc); 1792 } 1793 1794 static uint8_t 1795 wpi_plcp_signal(int rate) 1796 { 1797 switch (rate) { 1798 /* CCK rates (returned values are device-dependent) */ 1799 case 2: return 10; 1800 case 4: return 20; 1801 case 11: return 55; 1802 case 22: return 110; 1803 1804 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1805 /* R1-R4 (ral/ural is R4-R1) */ 1806 case 12: return 0xd; 1807 case 18: return 0xf; 1808 case 24: return 0x5; 1809 case 36: return 0x7; 1810 case 48: return 0x9; 1811 case 72: return 0xb; 1812 case 96: return 0x1; 1813 case 108: return 0x3; 1814 1815 /* unsupported rates (should not get there) */ 1816 default: return 0; 1817 } 1818 } 1819 1820 /* quickly determine if a given rate is CCK or OFDM */ 1821 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1822 1823 /* 1824 * Construct the data packet for a transmit buffer and acutally put 1825 * the buffer onto the transmit ring, kicking the card to process the 1826 * the buffer. 1827 */ 1828 static int 1829 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1830 int ac) 1831 { 1832 struct ieee80211vap *vap = ni->ni_vap; 1833 struct ifnet *ifp = sc->sc_ifp; 1834 struct ieee80211com *ic = ifp->if_l2com; 1835 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1836 struct wpi_tx_ring *ring = &sc->txq[ac]; 1837 struct wpi_tx_desc *desc; 1838 struct wpi_tx_data *data; 1839 struct wpi_tx_cmd *cmd; 1840 struct wpi_cmd_data *tx; 1841 struct ieee80211_frame *wh; 1842 const struct ieee80211_txparam *tp; 1843 struct ieee80211_key *k; 1844 struct mbuf *mnew; 1845 int i, error, nsegs, rate, hdrlen, ismcast; 1846 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1847 1848 desc = &ring->desc[ring->cur]; 1849 data = &ring->data[ring->cur]; 1850 1851 wh = mtod(m0, struct ieee80211_frame *); 1852 1853 hdrlen = ieee80211_hdrsize(wh); 1854 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1855 1856 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1857 k = ieee80211_crypto_encap(ni, m0); 1858 if (k == NULL) { 1859 m_freem(m0); 1860 return ENOBUFS; 1861 } 1862 /* packet header may have moved, reset our local pointer */ 1863 wh = mtod(m0, struct ieee80211_frame *); 1864 } 1865 1866 cmd = &ring->cmd[ring->cur]; 1867 cmd->code = WPI_CMD_TX_DATA; 1868 cmd->flags = 0; 1869 cmd->qid = ring->qid; 1870 cmd->idx = ring->cur; 1871 1872 tx = (struct wpi_cmd_data *)cmd->data; 1873 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1874 tx->timeout = htole16(0); 1875 tx->ofdm_mask = 0xff; 1876 tx->cck_mask = 0x0f; 1877 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1878 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1879 tx->len = htole16(m0->m_pkthdr.len); 1880 1881 if (!ismcast) { 1882 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1883 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1884 tx->flags |= htole32(WPI_TX_NEED_ACK); 1885 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1886 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1887 tx->rts_ntries = 7; 1888 } 1889 } 1890 /* pick a rate */ 1891 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1892 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1893 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1894 /* tell h/w to set timestamp in probe responses */ 1895 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1896 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1897 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1898 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1899 tx->timeout = htole16(3); 1900 else 1901 tx->timeout = htole16(2); 1902 rate = tp->mgmtrate; 1903 } else if (ismcast) { 1904 rate = tp->mcastrate; 1905 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1906 rate = tp->ucastrate; 1907 } else { 1908 (void) ieee80211_amrr_choose(ni, &WPI_NODE(ni)->amn); 1909 rate = ni->ni_txrate; 1910 } 1911 tx->rate = wpi_plcp_signal(rate); 1912 1913 /* be very persistant at sending frames out */ 1914 #if 0 1915 tx->data_ntries = tp->maxretry; 1916 #else 1917 tx->data_ntries = 15; /* XXX way too high */ 1918 #endif 1919 1920 if (bpf_peers_present(ifp->if_bpf)) { 1921 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1922 tap->wt_flags = 0; 1923 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1924 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1925 tap->wt_rate = rate; 1926 tap->wt_hwqueue = ac; 1927 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1928 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1929 1930 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1931 } 1932 1933 /* save and trim IEEE802.11 header */ 1934 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1935 m_adj(m0, hdrlen); 1936 1937 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 1938 &nsegs, BUS_DMA_NOWAIT); 1939 if (error != 0 && error != EFBIG) { 1940 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1941 error); 1942 m_freem(m0); 1943 return error; 1944 } 1945 if (error != 0) { 1946 /* XXX use m_collapse */ 1947 mnew = m_defrag(m0, M_DONTWAIT); 1948 if (mnew == NULL) { 1949 device_printf(sc->sc_dev, 1950 "could not defragment mbuf\n"); 1951 m_freem(m0); 1952 return ENOBUFS; 1953 } 1954 m0 = mnew; 1955 1956 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 1957 m0, segs, &nsegs, BUS_DMA_NOWAIT); 1958 if (error != 0) { 1959 device_printf(sc->sc_dev, 1960 "could not map mbuf (error %d)\n", error); 1961 m_freem(m0); 1962 return error; 1963 } 1964 } 1965 1966 data->m = m0; 1967 data->ni = ni; 1968 1969 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1970 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 1971 1972 /* first scatter/gather segment is used by the tx data command */ 1973 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1974 (1 + nsegs) << 24); 1975 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1976 ring->cur * sizeof (struct wpi_tx_cmd)); 1977 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1978 for (i = 1; i <= nsegs; i++) { 1979 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 1980 desc->segs[i].len = htole32(segs[i - 1].ds_len); 1981 } 1982 1983 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1984 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1985 BUS_DMASYNC_PREWRITE); 1986 1987 ring->queued++; 1988 1989 /* kick ring */ 1990 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 1991 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 1992 1993 return 0; 1994 } 1995 1996 /** 1997 * Process data waiting to be sent on the IFNET output queue 1998 */ 1999 static void 2000 wpi_start(struct ifnet *ifp) 2001 { 2002 struct wpi_softc *sc = ifp->if_softc; 2003 2004 WPI_LOCK(sc); 2005 wpi_start_locked(ifp); 2006 WPI_UNLOCK(sc); 2007 } 2008 2009 static void 2010 wpi_start_locked(struct ifnet *ifp) 2011 { 2012 struct wpi_softc *sc = ifp->if_softc; 2013 struct ieee80211_node *ni; 2014 struct mbuf *m; 2015 int ac; 2016 2017 WPI_LOCK_ASSERT(sc); 2018 2019 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2020 return; 2021 2022 for (;;) { 2023 IFQ_POLL(&ifp->if_snd, m); 2024 if (m == NULL) 2025 break; 2026 /* no QoS encapsulation for EAPOL frames */ 2027 ac = M_WME_GETAC(m); 2028 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2029 /* there is no place left in this ring */ 2030 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2031 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2032 break; 2033 } 2034 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2035 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2036 m = ieee80211_encap(ni, m); 2037 if (m == NULL) { 2038 ieee80211_free_node(ni); 2039 ifp->if_oerrors++; 2040 continue; 2041 } 2042 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2043 ieee80211_free_node(ni); 2044 ifp->if_oerrors++; 2045 break; 2046 } 2047 sc->sc_tx_timer = 5; 2048 } 2049 } 2050 2051 static int 2052 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2053 const struct ieee80211_bpf_params *params) 2054 { 2055 struct ieee80211com *ic = ni->ni_ic; 2056 struct ifnet *ifp = ic->ic_ifp; 2057 struct wpi_softc *sc = ifp->if_softc; 2058 2059 /* prevent management frames from being sent if we're not ready */ 2060 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2061 m_freem(m); 2062 ieee80211_free_node(ni); 2063 return ENETDOWN; 2064 } 2065 WPI_LOCK(sc); 2066 2067 /* management frames go into ring 0 */ 2068 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2069 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2070 m_freem(m); 2071 WPI_UNLOCK(sc); 2072 ieee80211_free_node(ni); 2073 return ENOBUFS; /* XXX */ 2074 } 2075 2076 ifp->if_opackets++; 2077 if (wpi_tx_data(sc, m, ni, 0) != 0) 2078 goto bad; 2079 sc->sc_tx_timer = 5; 2080 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2081 2082 WPI_UNLOCK(sc); 2083 return 0; 2084 bad: 2085 ifp->if_oerrors++; 2086 WPI_UNLOCK(sc); 2087 ieee80211_free_node(ni); 2088 return EIO; /* XXX */ 2089 } 2090 2091 static int 2092 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2093 { 2094 struct wpi_softc *sc = ifp->if_softc; 2095 struct ieee80211com *ic = ifp->if_l2com; 2096 struct ifreq *ifr = (struct ifreq *) data; 2097 int error = 0, startall = 0; 2098 2099 switch (cmd) { 2100 case SIOCSIFFLAGS: 2101 WPI_LOCK(sc); 2102 if ((ifp->if_flags & IFF_UP)) { 2103 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2104 wpi_init_locked(sc, 0); 2105 startall = 1; 2106 } 2107 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2108 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2109 wpi_stop_locked(sc); 2110 WPI_UNLOCK(sc); 2111 if (startall) 2112 ieee80211_start_all(ic); 2113 break; 2114 case SIOCGIFMEDIA: 2115 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2116 break; 2117 case SIOCGIFADDR: 2118 error = ether_ioctl(ifp, cmd, data); 2119 break; 2120 default: 2121 error = EINVAL; 2122 break; 2123 } 2124 return error; 2125 } 2126 2127 /* 2128 * Extract various information from EEPROM. 2129 */ 2130 static void 2131 wpi_read_eeprom(struct wpi_softc *sc) 2132 { 2133 struct ifnet *ifp = sc->sc_ifp; 2134 struct ieee80211com *ic = ifp->if_l2com; 2135 int i; 2136 2137 /* read the hardware capabilities, revision and SKU type */ 2138 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2139 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2140 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2141 2142 /* read the regulatory domain */ 2143 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2144 2145 /* read in the hw MAC address */ 2146 wpi_read_prom_data(sc, WPI_EEPROM_MAC, ic->ic_myaddr, 6); 2147 2148 /* read the list of authorized channels */ 2149 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2150 wpi_read_eeprom_channels(sc,i); 2151 2152 /* read the power level calibration info for each group */ 2153 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2154 wpi_read_eeprom_group(sc,i); 2155 } 2156 2157 /* 2158 * Send a command to the firmware. 2159 */ 2160 static int 2161 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2162 { 2163 struct wpi_tx_ring *ring = &sc->cmdq; 2164 struct wpi_tx_desc *desc; 2165 struct wpi_tx_cmd *cmd; 2166 2167 #ifdef WPI_DEBUG 2168 if (!async) { 2169 WPI_LOCK_ASSERT(sc); 2170 } 2171 #endif 2172 2173 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2174 async)); 2175 2176 if (sc->flags & WPI_FLAG_BUSY) { 2177 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2178 __func__, code); 2179 return EAGAIN; 2180 } 2181 sc->flags|= WPI_FLAG_BUSY; 2182 2183 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2184 code, size)); 2185 2186 desc = &ring->desc[ring->cur]; 2187 cmd = &ring->cmd[ring->cur]; 2188 2189 cmd->code = code; 2190 cmd->flags = 0; 2191 cmd->qid = ring->qid; 2192 cmd->idx = ring->cur; 2193 memcpy(cmd->data, buf, size); 2194 2195 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2196 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2197 ring->cur * sizeof (struct wpi_tx_cmd)); 2198 desc->segs[0].len = htole32(4 + size); 2199 2200 /* kick cmd ring */ 2201 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2202 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2203 2204 if (async) { 2205 sc->flags &= ~ WPI_FLAG_BUSY; 2206 return 0; 2207 } 2208 2209 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2210 } 2211 2212 static int 2213 wpi_wme_update(struct ieee80211com *ic) 2214 { 2215 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2216 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2217 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2218 const struct wmeParams *wmep; 2219 struct wpi_wme_setup wme; 2220 int ac; 2221 2222 /* don't override default WME values if WME is not actually enabled */ 2223 if (!(ic->ic_flags & IEEE80211_F_WME)) 2224 return 0; 2225 2226 wme.flags = 0; 2227 for (ac = 0; ac < WME_NUM_AC; ac++) { 2228 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2229 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2230 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2231 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2232 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2233 2234 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2235 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2236 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2237 } 2238 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2239 #undef WPI_USEC 2240 #undef WPI_EXP2 2241 } 2242 2243 /* 2244 * Configure h/w multi-rate retries. 2245 */ 2246 static int 2247 wpi_mrr_setup(struct wpi_softc *sc) 2248 { 2249 struct ifnet *ifp = sc->sc_ifp; 2250 struct ieee80211com *ic = ifp->if_l2com; 2251 struct wpi_mrr_setup mrr; 2252 int i, error; 2253 2254 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2255 2256 /* CCK rates (not used with 802.11a) */ 2257 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2258 mrr.rates[i].flags = 0; 2259 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2260 /* fallback to the immediate lower CCK rate (if any) */ 2261 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2262 /* try one time at this rate before falling back to "next" */ 2263 mrr.rates[i].ntries = 1; 2264 } 2265 2266 /* OFDM rates (not used with 802.11b) */ 2267 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2268 mrr.rates[i].flags = 0; 2269 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2270 /* fallback to the immediate lower OFDM rate (if any) */ 2271 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2272 mrr.rates[i].next = (i == WPI_OFDM6) ? 2273 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2274 WPI_OFDM6 : WPI_CCK2) : 2275 i - 1; 2276 /* try one time at this rate before falling back to "next" */ 2277 mrr.rates[i].ntries = 1; 2278 } 2279 2280 /* setup MRR for control frames */ 2281 mrr.which = htole32(WPI_MRR_CTL); 2282 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2283 if (error != 0) { 2284 device_printf(sc->sc_dev, 2285 "could not setup MRR for control frames\n"); 2286 return error; 2287 } 2288 2289 /* setup MRR for data frames */ 2290 mrr.which = htole32(WPI_MRR_DATA); 2291 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2292 if (error != 0) { 2293 device_printf(sc->sc_dev, 2294 "could not setup MRR for data frames\n"); 2295 return error; 2296 } 2297 2298 return 0; 2299 } 2300 2301 static void 2302 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2303 { 2304 struct wpi_cmd_led led; 2305 2306 led.which = which; 2307 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2308 led.off = off; 2309 led.on = on; 2310 2311 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2312 } 2313 2314 static void 2315 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2316 { 2317 struct wpi_cmd_tsf tsf; 2318 uint64_t val, mod; 2319 2320 memset(&tsf, 0, sizeof tsf); 2321 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2322 tsf.bintval = htole16(ni->ni_intval); 2323 tsf.lintval = htole16(10); 2324 2325 /* compute remaining time until next beacon */ 2326 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2327 mod = le64toh(tsf.tstamp) % val; 2328 tsf.binitval = htole32((uint32_t)(val - mod)); 2329 2330 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2331 device_printf(sc->sc_dev, "could not enable TSF\n"); 2332 } 2333 2334 #if 0 2335 /* 2336 * Build a beacon frame that the firmware will broadcast periodically in 2337 * IBSS or HostAP modes. 2338 */ 2339 static int 2340 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2341 { 2342 struct ifnet *ifp = sc->sc_ifp; 2343 struct ieee80211com *ic = ifp->if_l2com; 2344 struct wpi_tx_ring *ring = &sc->cmdq; 2345 struct wpi_tx_desc *desc; 2346 struct wpi_tx_data *data; 2347 struct wpi_tx_cmd *cmd; 2348 struct wpi_cmd_beacon *bcn; 2349 struct ieee80211_beacon_offsets bo; 2350 struct mbuf *m0; 2351 bus_addr_t physaddr; 2352 int error; 2353 2354 desc = &ring->desc[ring->cur]; 2355 data = &ring->data[ring->cur]; 2356 2357 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2358 if (m0 == NULL) { 2359 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2360 return ENOMEM; 2361 } 2362 2363 cmd = &ring->cmd[ring->cur]; 2364 cmd->code = WPI_CMD_SET_BEACON; 2365 cmd->flags = 0; 2366 cmd->qid = ring->qid; 2367 cmd->idx = ring->cur; 2368 2369 bcn = (struct wpi_cmd_beacon *)cmd->data; 2370 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2371 bcn->id = WPI_ID_BROADCAST; 2372 bcn->ofdm_mask = 0xff; 2373 bcn->cck_mask = 0x0f; 2374 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2375 bcn->len = htole16(m0->m_pkthdr.len); 2376 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2377 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2378 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2379 2380 /* save and trim IEEE802.11 header */ 2381 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2382 m_adj(m0, sizeof (struct ieee80211_frame)); 2383 2384 /* assume beacon frame is contiguous */ 2385 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2386 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2387 if (error != 0) { 2388 device_printf(sc->sc_dev, "could not map beacon\n"); 2389 m_freem(m0); 2390 return error; 2391 } 2392 2393 data->m = m0; 2394 2395 /* first scatter/gather segment is used by the beacon command */ 2396 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2397 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2398 ring->cur * sizeof (struct wpi_tx_cmd)); 2399 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2400 desc->segs[1].addr = htole32(physaddr); 2401 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2402 2403 /* kick cmd ring */ 2404 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2405 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2406 2407 return 0; 2408 } 2409 #endif 2410 2411 static int 2412 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2413 { 2414 struct ieee80211com *ic = vap->iv_ic; 2415 struct ieee80211_node *ni = vap->iv_bss; 2416 struct wpi_node_info node; 2417 int error; 2418 2419 2420 /* update adapter's configuration */ 2421 sc->config.associd = 0; 2422 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2423 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2424 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2425 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2426 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2427 WPI_CONFIG_24GHZ); 2428 } 2429 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2430 sc->config.cck_mask = 0; 2431 sc->config.ofdm_mask = 0x15; 2432 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2433 sc->config.cck_mask = 0x03; 2434 sc->config.ofdm_mask = 0; 2435 } else { 2436 /* XXX assume 802.11b/g */ 2437 sc->config.cck_mask = 0x0f; 2438 sc->config.ofdm_mask = 0x15; 2439 } 2440 2441 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2442 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2443 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2444 sizeof (struct wpi_config), 1); 2445 if (error != 0) { 2446 device_printf(sc->sc_dev, "could not configure\n"); 2447 return error; 2448 } 2449 2450 /* configuration has changed, set Tx power accordingly */ 2451 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2452 device_printf(sc->sc_dev, "could not set Tx power\n"); 2453 return error; 2454 } 2455 2456 /* add default node */ 2457 memset(&node, 0, sizeof node); 2458 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2459 node.id = WPI_ID_BSS; 2460 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2461 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2462 node.action = htole32(WPI_ACTION_SET_RATE); 2463 node.antenna = WPI_ANTENNA_BOTH; 2464 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2465 if (error != 0) 2466 device_printf(sc->sc_dev, "could not add BSS node\n"); 2467 2468 return (error); 2469 } 2470 2471 static int 2472 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2473 { 2474 struct ieee80211com *ic = vap->iv_ic; 2475 struct ieee80211_node *ni = vap->iv_bss; 2476 int error; 2477 2478 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2479 /* link LED blinks while monitoring */ 2480 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2481 return 0; 2482 } 2483 2484 wpi_enable_tsf(sc, ni); 2485 2486 /* update adapter's configuration */ 2487 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2488 /* short preamble/slot time are negotiated when associating */ 2489 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2490 WPI_CONFIG_SHSLOT); 2491 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2492 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2493 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2494 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2495 sc->config.filter |= htole32(WPI_FILTER_BSS); 2496 2497 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2498 2499 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2500 sc->config.flags)); 2501 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2502 wpi_config), 1); 2503 if (error != 0) { 2504 device_printf(sc->sc_dev, "could not update configuration\n"); 2505 return error; 2506 } 2507 2508 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2509 if (error != 0) { 2510 device_printf(sc->sc_dev, "could set txpower\n"); 2511 return error; 2512 } 2513 2514 if (vap->iv_opmode == IEEE80211_M_STA) { 2515 /* fake a join to init the tx rate */ 2516 wpi_newassoc(ni, 1); 2517 } 2518 2519 /* link LED always on while associated */ 2520 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2521 2522 /* start automatic rate control timer */ 2523 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2524 2525 return (error); 2526 } 2527 2528 /* 2529 * Send a scan request to the firmware. Since this command is huge, we map it 2530 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2531 * much of this code is similar to that in wpi_cmd but because we must manually 2532 * construct the probe & channels, we duplicate what's needed here. XXX In the 2533 * future, this function should be modified to use wpi_cmd to help cleanup the 2534 * code base. 2535 */ 2536 static int 2537 wpi_scan(struct wpi_softc *sc) 2538 { 2539 struct ifnet *ifp = sc->sc_ifp; 2540 struct ieee80211com *ic = ifp->if_l2com; 2541 struct ieee80211_scan_state *ss = ic->ic_scan; 2542 struct wpi_tx_ring *ring = &sc->cmdq; 2543 struct wpi_tx_desc *desc; 2544 struct wpi_tx_data *data; 2545 struct wpi_tx_cmd *cmd; 2546 struct wpi_scan_hdr *hdr; 2547 struct wpi_scan_chan *chan; 2548 struct ieee80211_frame *wh; 2549 struct ieee80211_rateset *rs; 2550 struct ieee80211_channel *c; 2551 enum ieee80211_phymode mode; 2552 uint8_t *frm; 2553 int nrates, pktlen, error, i, nssid; 2554 bus_addr_t physaddr; 2555 2556 desc = &ring->desc[ring->cur]; 2557 data = &ring->data[ring->cur]; 2558 2559 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2560 if (data->m == NULL) { 2561 device_printf(sc->sc_dev, 2562 "could not allocate mbuf for scan command\n"); 2563 return ENOMEM; 2564 } 2565 2566 cmd = mtod(data->m, struct wpi_tx_cmd *); 2567 cmd->code = WPI_CMD_SCAN; 2568 cmd->flags = 0; 2569 cmd->qid = ring->qid; 2570 cmd->idx = ring->cur; 2571 2572 hdr = (struct wpi_scan_hdr *)cmd->data; 2573 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2574 2575 /* 2576 * Move to the next channel if no packets are received within 5 msecs 2577 * after sending the probe request (this helps to reduce the duration 2578 * of active scans). 2579 */ 2580 hdr->quiet = htole16(5); 2581 hdr->threshold = htole16(1); 2582 2583 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2584 /* send probe requests at 6Mbps */ 2585 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2586 2587 /* Enable crc checking */ 2588 hdr->promotion = htole16(1); 2589 } else { 2590 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2591 /* send probe requests at 1Mbps */ 2592 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2593 } 2594 hdr->tx.id = WPI_ID_BROADCAST; 2595 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2596 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2597 2598 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2599 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2600 for (i = 0; i < nssid; i++) { 2601 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2602 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2603 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2604 hdr->scan_essids[i].esslen); 2605 if (wpi_debug & WPI_DEBUG_SCANNING) { 2606 printf("Scanning Essid: "); 2607 ieee80211_print_essid(hdr->scan_essids[i].essid, 2608 hdr->scan_essids[i].esslen); 2609 printf("\n"); 2610 } 2611 } 2612 2613 /* 2614 * Build a probe request frame. Most of the following code is a 2615 * copy & paste of what is done in net80211. 2616 */ 2617 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2618 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2619 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2620 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2621 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2622 IEEE80211_ADDR_COPY(wh->i_addr2, ic->ic_myaddr); 2623 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2624 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2625 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2626 2627 frm = (uint8_t *)(wh + 1); 2628 2629 /* add essid IE, the hardware will fill this in for us */ 2630 *frm++ = IEEE80211_ELEMID_SSID; 2631 *frm++ = 0; 2632 2633 mode = ieee80211_chan2mode(ic->ic_curchan); 2634 rs = &ic->ic_sup_rates[mode]; 2635 2636 /* add supported rates IE */ 2637 *frm++ = IEEE80211_ELEMID_RATES; 2638 nrates = rs->rs_nrates; 2639 if (nrates > IEEE80211_RATE_SIZE) 2640 nrates = IEEE80211_RATE_SIZE; 2641 *frm++ = nrates; 2642 memcpy(frm, rs->rs_rates, nrates); 2643 frm += nrates; 2644 2645 /* add supported xrates IE */ 2646 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2647 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2648 *frm++ = IEEE80211_ELEMID_XRATES; 2649 *frm++ = nrates; 2650 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2651 frm += nrates; 2652 } 2653 2654 /* setup length of probe request */ 2655 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2656 2657 /* 2658 * Construct information about the channel that we 2659 * want to scan. The firmware expects this to be directly 2660 * after the scan probe request 2661 */ 2662 c = ic->ic_curchan; 2663 chan = (struct wpi_scan_chan *)frm; 2664 chan->chan = ieee80211_chan2ieee(ic, c); 2665 chan->flags = 0; 2666 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2667 chan->flags |= WPI_CHAN_ACTIVE; 2668 if (nssid != 0) 2669 chan->flags |= WPI_CHAN_DIRECT; 2670 } 2671 chan->gain_dsp = 0x6e; /* Default level */ 2672 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2673 chan->active = htole16(10); 2674 chan->passive = htole16(ss->ss_maxdwell); 2675 chan->gain_radio = 0x3b; 2676 } else { 2677 chan->active = htole16(20); 2678 chan->passive = htole16(ss->ss_maxdwell); 2679 chan->gain_radio = 0x28; 2680 } 2681 2682 DPRINTFN(WPI_DEBUG_SCANNING, 2683 ("Scanning %u Passive: %d\n", 2684 chan->chan, 2685 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2686 2687 hdr->nchan++; 2688 chan++; 2689 2690 frm += sizeof (struct wpi_scan_chan); 2691 #if 0 2692 // XXX All Channels.... 2693 for (c = &ic->ic_channels[1]; 2694 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2695 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2696 continue; 2697 2698 chan->chan = ieee80211_chan2ieee(ic, c); 2699 chan->flags = 0; 2700 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2701 chan->flags |= WPI_CHAN_ACTIVE; 2702 if (ic->ic_des_ssid[0].len != 0) 2703 chan->flags |= WPI_CHAN_DIRECT; 2704 } 2705 chan->gain_dsp = 0x6e; /* Default level */ 2706 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2707 chan->active = htole16(10); 2708 chan->passive = htole16(110); 2709 chan->gain_radio = 0x3b; 2710 } else { 2711 chan->active = htole16(20); 2712 chan->passive = htole16(120); 2713 chan->gain_radio = 0x28; 2714 } 2715 2716 DPRINTFN(WPI_DEBUG_SCANNING, 2717 ("Scanning %u Passive: %d\n", 2718 chan->chan, 2719 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2720 2721 hdr->nchan++; 2722 chan++; 2723 2724 frm += sizeof (struct wpi_scan_chan); 2725 } 2726 #endif 2727 2728 hdr->len = htole16(frm - (uint8_t *)hdr); 2729 pktlen = frm - (uint8_t *)cmd; 2730 2731 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2732 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2733 if (error != 0) { 2734 device_printf(sc->sc_dev, "could not map scan command\n"); 2735 m_freem(data->m); 2736 data->m = NULL; 2737 return error; 2738 } 2739 2740 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2741 desc->segs[0].addr = htole32(physaddr); 2742 desc->segs[0].len = htole32(pktlen); 2743 2744 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2745 BUS_DMASYNC_PREWRITE); 2746 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2747 2748 /* kick cmd ring */ 2749 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2750 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2751 2752 sc->sc_scan_timer = 5; 2753 return 0; /* will be notified async. of failure/success */ 2754 } 2755 2756 /** 2757 * Configure the card to listen to a particular channel, this transisions the 2758 * card in to being able to receive frames from remote devices. 2759 */ 2760 static int 2761 wpi_config(struct wpi_softc *sc) 2762 { 2763 struct ifnet *ifp = sc->sc_ifp; 2764 struct ieee80211com *ic = ifp->if_l2com; 2765 struct wpi_power power; 2766 struct wpi_bluetooth bluetooth; 2767 struct wpi_node_info node; 2768 int error; 2769 2770 /* set power mode */ 2771 memset(&power, 0, sizeof power); 2772 power.flags = htole32(WPI_POWER_CAM|0x8); 2773 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2774 if (error != 0) { 2775 device_printf(sc->sc_dev, "could not set power mode\n"); 2776 return error; 2777 } 2778 2779 /* configure bluetooth coexistence */ 2780 memset(&bluetooth, 0, sizeof bluetooth); 2781 bluetooth.flags = 3; 2782 bluetooth.lead = 0xaa; 2783 bluetooth.kill = 1; 2784 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2785 0); 2786 if (error != 0) { 2787 device_printf(sc->sc_dev, 2788 "could not configure bluetooth coexistence\n"); 2789 return error; 2790 } 2791 2792 /* configure adapter */ 2793 memset(&sc->config, 0, sizeof (struct wpi_config)); 2794 IEEE80211_ADDR_COPY(sc->config.myaddr, ic->ic_myaddr); 2795 /*set default channel*/ 2796 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2797 sc->config.flags = htole32(WPI_CONFIG_TSF); 2798 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2799 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2800 WPI_CONFIG_24GHZ); 2801 } 2802 sc->config.filter = 0; 2803 switch (ic->ic_opmode) { 2804 case IEEE80211_M_STA: 2805 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2806 sc->config.mode = WPI_MODE_STA; 2807 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2808 break; 2809 case IEEE80211_M_IBSS: 2810 case IEEE80211_M_AHDEMO: 2811 sc->config.mode = WPI_MODE_IBSS; 2812 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2813 WPI_FILTER_MULTICAST); 2814 break; 2815 case IEEE80211_M_HOSTAP: 2816 sc->config.mode = WPI_MODE_HOSTAP; 2817 break; 2818 case IEEE80211_M_MONITOR: 2819 sc->config.mode = WPI_MODE_MONITOR; 2820 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2821 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2822 break; 2823 } 2824 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2825 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2826 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2827 sizeof (struct wpi_config), 0); 2828 if (error != 0) { 2829 device_printf(sc->sc_dev, "configure command failed\n"); 2830 return error; 2831 } 2832 2833 /* configuration has changed, set Tx power accordingly */ 2834 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2835 device_printf(sc->sc_dev, "could not set Tx power\n"); 2836 return error; 2837 } 2838 2839 /* add broadcast node */ 2840 memset(&node, 0, sizeof node); 2841 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2842 node.id = WPI_ID_BROADCAST; 2843 node.rate = wpi_plcp_signal(2); 2844 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2845 if (error != 0) { 2846 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2847 return error; 2848 } 2849 2850 /* Setup rate scalling */ 2851 error = wpi_mrr_setup(sc); 2852 if (error != 0) { 2853 device_printf(sc->sc_dev, "could not setup MRR\n"); 2854 return error; 2855 } 2856 2857 return 0; 2858 } 2859 2860 static void 2861 wpi_stop_master(struct wpi_softc *sc) 2862 { 2863 uint32_t tmp; 2864 int ntries; 2865 2866 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2867 2868 tmp = WPI_READ(sc, WPI_RESET); 2869 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2870 2871 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2872 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2873 return; /* already asleep */ 2874 2875 for (ntries = 0; ntries < 100; ntries++) { 2876 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2877 break; 2878 DELAY(10); 2879 } 2880 if (ntries == 100) { 2881 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2882 } 2883 } 2884 2885 static int 2886 wpi_power_up(struct wpi_softc *sc) 2887 { 2888 uint32_t tmp; 2889 int ntries; 2890 2891 wpi_mem_lock(sc); 2892 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2893 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2894 wpi_mem_unlock(sc); 2895 2896 for (ntries = 0; ntries < 5000; ntries++) { 2897 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2898 break; 2899 DELAY(10); 2900 } 2901 if (ntries == 5000) { 2902 device_printf(sc->sc_dev, 2903 "timeout waiting for NIC to power up\n"); 2904 return ETIMEDOUT; 2905 } 2906 return 0; 2907 } 2908 2909 static int 2910 wpi_reset(struct wpi_softc *sc) 2911 { 2912 uint32_t tmp; 2913 int ntries; 2914 2915 DPRINTFN(WPI_DEBUG_HW, 2916 ("Resetting the card - clearing any uploaded firmware\n")); 2917 2918 /* clear any pending interrupts */ 2919 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2920 2921 tmp = WPI_READ(sc, WPI_PLL_CTL); 2922 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2923 2924 tmp = WPI_READ(sc, WPI_CHICKEN); 2925 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2926 2927 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2928 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2929 2930 /* wait for clock stabilization */ 2931 for (ntries = 0; ntries < 25000; ntries++) { 2932 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2933 break; 2934 DELAY(10); 2935 } 2936 if (ntries == 25000) { 2937 device_printf(sc->sc_dev, 2938 "timeout waiting for clock stabilization\n"); 2939 return ETIMEDOUT; 2940 } 2941 2942 /* initialize EEPROM */ 2943 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2944 2945 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2946 device_printf(sc->sc_dev, "EEPROM not found\n"); 2947 return EIO; 2948 } 2949 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2950 2951 return 0; 2952 } 2953 2954 static void 2955 wpi_hw_config(struct wpi_softc *sc) 2956 { 2957 uint32_t rev, hw; 2958 2959 /* voodoo from the Linux "driver".. */ 2960 hw = WPI_READ(sc, WPI_HWCONFIG); 2961 2962 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2963 if ((rev & 0xc0) == 0x40) 2964 hw |= WPI_HW_ALM_MB; 2965 else if (!(rev & 0x80)) 2966 hw |= WPI_HW_ALM_MM; 2967 2968 if (sc->cap == 0x80) 2969 hw |= WPI_HW_SKU_MRC; 2970 2971 hw &= ~WPI_HW_REV_D; 2972 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2973 hw |= WPI_HW_REV_D; 2974 2975 if (sc->type > 1) 2976 hw |= WPI_HW_TYPE_B; 2977 2978 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2979 } 2980 2981 static void 2982 wpi_rfkill_resume(struct wpi_softc *sc) 2983 { 2984 struct ifnet *ifp = sc->sc_ifp; 2985 struct ieee80211com *ic = ifp->if_l2com; 2986 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2987 int ntries; 2988 2989 /* enable firmware again */ 2990 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 2991 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 2992 2993 /* wait for thermal sensors to calibrate */ 2994 for (ntries = 0; ntries < 1000; ntries++) { 2995 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 2996 break; 2997 DELAY(10); 2998 } 2999 3000 if (ntries == 1000) { 3001 device_printf(sc->sc_dev, 3002 "timeout waiting for thermal calibration\n"); 3003 WPI_UNLOCK(sc); 3004 return; 3005 } 3006 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3007 3008 if (wpi_config(sc) != 0) { 3009 device_printf(sc->sc_dev, "device config failed\n"); 3010 WPI_UNLOCK(sc); 3011 return; 3012 } 3013 3014 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3015 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3016 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3017 3018 if (vap != NULL) { 3019 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3020 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3021 taskqueue_enqueue(taskqueue_swi, 3022 &sc->sc_bmiss_task); 3023 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3024 } else 3025 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3026 } else { 3027 ieee80211_scan_next(vap); 3028 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3029 } 3030 } 3031 3032 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3033 } 3034 3035 static void 3036 wpi_init_locked(struct wpi_softc *sc, int force) 3037 { 3038 struct ifnet *ifp = sc->sc_ifp; 3039 uint32_t tmp; 3040 int ntries, qid; 3041 3042 wpi_stop_locked(sc); 3043 (void)wpi_reset(sc); 3044 3045 wpi_mem_lock(sc); 3046 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3047 DELAY(20); 3048 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3049 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3050 wpi_mem_unlock(sc); 3051 3052 (void)wpi_power_up(sc); 3053 wpi_hw_config(sc); 3054 3055 /* init Rx ring */ 3056 wpi_mem_lock(sc); 3057 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3058 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3059 offsetof(struct wpi_shared, next)); 3060 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3061 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3062 wpi_mem_unlock(sc); 3063 3064 /* init Tx rings */ 3065 wpi_mem_lock(sc); 3066 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3067 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3068 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3069 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3070 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3071 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3072 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3073 3074 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3075 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3076 3077 for (qid = 0; qid < 6; qid++) { 3078 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3079 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3080 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3081 } 3082 wpi_mem_unlock(sc); 3083 3084 /* clear "radio off" and "disable command" bits (reversed logic) */ 3085 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3086 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3087 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3088 3089 /* clear any pending interrupts */ 3090 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3091 3092 /* enable interrupts */ 3093 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3094 3095 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3096 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3097 3098 if ((wpi_load_firmware(sc)) != 0) { 3099 device_printf(sc->sc_dev, 3100 "A problem occurred loading the firmware to the driver\n"); 3101 return; 3102 } 3103 3104 /* At this point the firmware is up and running. If the hardware 3105 * RF switch is turned off thermal calibration will fail, though 3106 * the card is still happy to continue to accept commands, catch 3107 * this case and schedule a task to watch for it to be turned on. 3108 */ 3109 wpi_mem_lock(sc); 3110 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3111 wpi_mem_unlock(sc); 3112 3113 if (!(tmp & 0x1)) { 3114 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3115 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3116 goto out; 3117 } 3118 3119 /* wait for thermal sensors to calibrate */ 3120 for (ntries = 0; ntries < 1000; ntries++) { 3121 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3122 break; 3123 DELAY(10); 3124 } 3125 3126 if (ntries == 1000) { 3127 device_printf(sc->sc_dev, 3128 "timeout waiting for thermal sensors calibration\n"); 3129 return; 3130 } 3131 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3132 3133 if (wpi_config(sc) != 0) { 3134 device_printf(sc->sc_dev, "device config failed\n"); 3135 return; 3136 } 3137 3138 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3139 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3140 out: 3141 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3142 } 3143 3144 static void 3145 wpi_init(void *arg) 3146 { 3147 struct wpi_softc *sc = arg; 3148 struct ifnet *ifp = sc->sc_ifp; 3149 struct ieee80211com *ic = ifp->if_l2com; 3150 3151 WPI_LOCK(sc); 3152 wpi_init_locked(sc, 0); 3153 WPI_UNLOCK(sc); 3154 3155 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3156 ieee80211_start_all(ic); /* start all vaps */ 3157 } 3158 3159 static void 3160 wpi_stop_locked(struct wpi_softc *sc) 3161 { 3162 struct ifnet *ifp = sc->sc_ifp; 3163 uint32_t tmp; 3164 int ac; 3165 3166 sc->sc_tx_timer = 0; 3167 sc->sc_scan_timer = 0; 3168 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3169 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3170 callout_stop(&sc->watchdog_to); 3171 callout_stop(&sc->calib_to); 3172 3173 3174 /* disable interrupts */ 3175 WPI_WRITE(sc, WPI_MASK, 0); 3176 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3177 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3178 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3179 3180 /* Clear any commands left in the command buffer */ 3181 memset(sc->sc_cmd, 0, sizeof(sc->sc_cmd)); 3182 memset(sc->sc_cmd_arg, 0, sizeof(sc->sc_cmd_arg)); 3183 sc->sc_cmd_cur = 0; 3184 sc->sc_cmd_next = 0; 3185 3186 wpi_mem_lock(sc); 3187 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3188 wpi_mem_unlock(sc); 3189 3190 /* reset all Tx rings */ 3191 for (ac = 0; ac < 4; ac++) 3192 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3193 wpi_reset_tx_ring(sc, &sc->cmdq); 3194 3195 /* reset Rx ring */ 3196 wpi_reset_rx_ring(sc, &sc->rxq); 3197 3198 wpi_mem_lock(sc); 3199 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3200 wpi_mem_unlock(sc); 3201 3202 DELAY(5); 3203 3204 wpi_stop_master(sc); 3205 3206 tmp = WPI_READ(sc, WPI_RESET); 3207 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3208 sc->flags &= ~WPI_FLAG_BUSY; 3209 } 3210 3211 static void 3212 wpi_stop(struct wpi_softc *sc) 3213 { 3214 WPI_LOCK(sc); 3215 wpi_stop_locked(sc); 3216 WPI_UNLOCK(sc); 3217 } 3218 3219 static void 3220 wpi_newassoc(struct ieee80211_node *ni, int isnew) 3221 { 3222 struct ieee80211vap *vap = ni->ni_vap; 3223 struct wpi_vap *wvp = WPI_VAP(vap); 3224 3225 ieee80211_amrr_node_init(&wvp->amrr, &WPI_NODE(ni)->amn, ni); 3226 } 3227 3228 static void 3229 wpi_calib_timeout(void *arg) 3230 { 3231 struct wpi_softc *sc = arg; 3232 struct ifnet *ifp = sc->sc_ifp; 3233 struct ieee80211com *ic = ifp->if_l2com; 3234 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3235 int temp; 3236 3237 if (vap->iv_state != IEEE80211_S_RUN) 3238 return; 3239 3240 /* update sensor data */ 3241 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3242 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3243 3244 wpi_power_calibration(sc, temp); 3245 3246 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3247 } 3248 3249 /* 3250 * This function is called periodically (every 60 seconds) to adjust output 3251 * power to temperature changes. 3252 */ 3253 static void 3254 wpi_power_calibration(struct wpi_softc *sc, int temp) 3255 { 3256 struct ifnet *ifp = sc->sc_ifp; 3257 struct ieee80211com *ic = ifp->if_l2com; 3258 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3259 3260 /* sanity-check read value */ 3261 if (temp < -260 || temp > 25) { 3262 /* this can't be correct, ignore */ 3263 DPRINTFN(WPI_DEBUG_TEMP, 3264 ("out-of-range temperature reported: %d\n", temp)); 3265 return; 3266 } 3267 3268 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3269 3270 /* adjust Tx power if need be */ 3271 if (abs(temp - sc->temp) <= 6) 3272 return; 3273 3274 sc->temp = temp; 3275 3276 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3277 /* just warn, too bad for the automatic calibration... */ 3278 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3279 } 3280 } 3281 3282 /** 3283 * Read the eeprom to find out what channels are valid for the given 3284 * band and update net80211 with what we find. 3285 */ 3286 static void 3287 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3288 { 3289 struct ifnet *ifp = sc->sc_ifp; 3290 struct ieee80211com *ic = ifp->if_l2com; 3291 const struct wpi_chan_band *band = &wpi_bands[n]; 3292 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3293 int chan, i, offset, passive; 3294 3295 wpi_read_prom_data(sc, band->addr, channels, 3296 band->nchan * sizeof (struct wpi_eeprom_chan)); 3297 3298 for (i = 0; i < band->nchan; i++) { 3299 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3300 DPRINTFN(WPI_DEBUG_HW, 3301 ("Channel Not Valid: %d, band %d\n", 3302 band->chan[i],n)); 3303 continue; 3304 } 3305 3306 passive = 0; 3307 chan = band->chan[i]; 3308 offset = ic->ic_nchans; 3309 3310 /* is active scan allowed on this channel? */ 3311 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3312 passive = IEEE80211_CHAN_PASSIVE; 3313 } 3314 3315 if (n == 0) { /* 2GHz band */ 3316 ic->ic_channels[offset].ic_ieee = chan; 3317 ic->ic_channels[offset].ic_freq = 3318 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 3319 ic->ic_channels[offset].ic_flags = IEEE80211_CHAN_B | passive; 3320 offset++; 3321 ic->ic_channels[offset].ic_ieee = chan; 3322 ic->ic_channels[offset].ic_freq = 3323 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_2GHZ); 3324 ic->ic_channels[offset].ic_flags = IEEE80211_CHAN_G | passive; 3325 offset++; 3326 3327 } else { /* 5GHz band */ 3328 /* 3329 * Some 3945ABG adapters support channels 7, 8, 11 3330 * and 12 in the 2GHz *and* 5GHz bands. 3331 * Because of limitations in our net80211(9) stack, 3332 * we can't support these channels in 5GHz band. 3333 * XXX not true; just need to map to proper frequency 3334 */ 3335 if (chan <= 14) 3336 continue; 3337 3338 ic->ic_channels[offset].ic_ieee = chan; 3339 ic->ic_channels[offset].ic_freq = 3340 ieee80211_ieee2mhz(chan, IEEE80211_CHAN_5GHZ); 3341 ic->ic_channels[offset].ic_flags = IEEE80211_CHAN_A | passive; 3342 offset++; 3343 } 3344 3345 /* save maximum allowed power for this channel */ 3346 sc->maxpwr[chan] = channels[i].maxpwr; 3347 3348 ic->ic_nchans = offset; 3349 3350 #if 0 3351 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3352 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3353 //ic->ic_channels[chan].ic_minpower... 3354 //ic->ic_channels[chan].ic_maxregtxpower... 3355 #endif 3356 3357 DPRINTF(("adding chan %d flags=0x%x maxpwr=%d, offset %d\n", 3358 chan, channels[i].flags, sc->maxpwr[chan], offset)); 3359 } 3360 } 3361 3362 static void 3363 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3364 { 3365 struct wpi_power_group *group = &sc->groups[n]; 3366 struct wpi_eeprom_group rgroup; 3367 int i; 3368 3369 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3370 sizeof rgroup); 3371 3372 /* save power group information */ 3373 group->chan = rgroup.chan; 3374 group->maxpwr = rgroup.maxpwr; 3375 /* temperature at which the samples were taken */ 3376 group->temp = (int16_t)le16toh(rgroup.temp); 3377 3378 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3379 group->chan, group->maxpwr, group->temp)); 3380 3381 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3382 group->samples[i].index = rgroup.samples[i].index; 3383 group->samples[i].power = rgroup.samples[i].power; 3384 3385 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3386 group->samples[i].index, group->samples[i].power)); 3387 } 3388 } 3389 3390 /* 3391 * Update Tx power to match what is defined for channel `c'. 3392 */ 3393 static int 3394 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3395 { 3396 struct ifnet *ifp = sc->sc_ifp; 3397 struct ieee80211com *ic = ifp->if_l2com; 3398 struct wpi_power_group *group; 3399 struct wpi_cmd_txpower txpower; 3400 u_int chan; 3401 int i; 3402 3403 /* get channel number */ 3404 chan = ieee80211_chan2ieee(ic, c); 3405 3406 /* find the power group to which this channel belongs */ 3407 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3408 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3409 if (chan <= group->chan) 3410 break; 3411 } else 3412 group = &sc->groups[0]; 3413 3414 memset(&txpower, 0, sizeof txpower); 3415 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3416 txpower.channel = htole16(chan); 3417 3418 /* set Tx power for all OFDM and CCK rates */ 3419 for (i = 0; i <= 11 ; i++) { 3420 /* retrieve Tx power for this channel/rate combination */ 3421 int idx = wpi_get_power_index(sc, group, c, 3422 wpi_ridx_to_rate[i]); 3423 3424 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3425 3426 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3427 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3428 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3429 } else { 3430 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3431 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3432 } 3433 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3434 chan, wpi_ridx_to_rate[i], idx)); 3435 } 3436 3437 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3438 } 3439 3440 /* 3441 * Determine Tx power index for a given channel/rate combination. 3442 * This takes into account the regulatory information from EEPROM and the 3443 * current temperature. 3444 */ 3445 static int 3446 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3447 struct ieee80211_channel *c, int rate) 3448 { 3449 /* fixed-point arithmetic division using a n-bit fractional part */ 3450 #define fdivround(a, b, n) \ 3451 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3452 3453 /* linear interpolation */ 3454 #define interpolate(x, x1, y1, x2, y2, n) \ 3455 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3456 3457 struct ifnet *ifp = sc->sc_ifp; 3458 struct ieee80211com *ic = ifp->if_l2com; 3459 struct wpi_power_sample *sample; 3460 int pwr, idx; 3461 u_int chan; 3462 3463 /* get channel number */ 3464 chan = ieee80211_chan2ieee(ic, c); 3465 3466 /* default power is group's maximum power - 3dB */ 3467 pwr = group->maxpwr / 2; 3468 3469 /* decrease power for highest OFDM rates to reduce distortion */ 3470 switch (rate) { 3471 case 72: /* 36Mb/s */ 3472 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3473 break; 3474 case 96: /* 48Mb/s */ 3475 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3476 break; 3477 case 108: /* 54Mb/s */ 3478 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3479 break; 3480 } 3481 3482 /* never exceed channel's maximum allowed Tx power */ 3483 pwr = min(pwr, sc->maxpwr[chan]); 3484 3485 /* retrieve power index into gain tables from samples */ 3486 for (sample = group->samples; sample < &group->samples[3]; sample++) 3487 if (pwr > sample[1].power) 3488 break; 3489 /* fixed-point linear interpolation using a 19-bit fractional part */ 3490 idx = interpolate(pwr, sample[0].power, sample[0].index, 3491 sample[1].power, sample[1].index, 19); 3492 3493 /* 3494 * Adjust power index based on current temperature 3495 * - if colder than factory-calibrated: decreate output power 3496 * - if warmer than factory-calibrated: increase output power 3497 */ 3498 idx -= (sc->temp - group->temp) * 11 / 100; 3499 3500 /* decrease power for CCK rates (-5dB) */ 3501 if (!WPI_RATE_IS_OFDM(rate)) 3502 idx += 10; 3503 3504 /* keep power index in a valid range */ 3505 if (idx < 0) 3506 return 0; 3507 if (idx > WPI_MAX_PWR_INDEX) 3508 return WPI_MAX_PWR_INDEX; 3509 return idx; 3510 3511 #undef interpolate 3512 #undef fdivround 3513 } 3514 3515 /** 3516 * Called by net80211 framework to indicate that a scan 3517 * is starting. This function doesn't actually do the scan, 3518 * wpi_scan_curchan starts things off. This function is more 3519 * of an early warning from the framework we should get ready 3520 * for the scan. 3521 */ 3522 static void 3523 wpi_scan_start(struct ieee80211com *ic) 3524 { 3525 struct ifnet *ifp = ic->ic_ifp; 3526 struct wpi_softc *sc = ifp->if_softc; 3527 3528 wpi_queue_cmd(sc, WPI_SCAN_START, 0, WPI_QUEUE_NORMAL); 3529 } 3530 3531 /** 3532 * Called by the net80211 framework, indicates that the 3533 * scan has ended. If there is a scan in progress on the card 3534 * then it should be aborted. 3535 */ 3536 static void 3537 wpi_scan_end(struct ieee80211com *ic) 3538 { 3539 struct ifnet *ifp = ic->ic_ifp; 3540 struct wpi_softc *sc = ifp->if_softc; 3541 3542 wpi_queue_cmd(sc, WPI_SCAN_STOP, 0, WPI_QUEUE_NORMAL); 3543 } 3544 3545 /** 3546 * Called by the net80211 framework to indicate to the driver 3547 * that the channel should be changed 3548 */ 3549 static void 3550 wpi_set_channel(struct ieee80211com *ic) 3551 { 3552 struct ifnet *ifp = ic->ic_ifp; 3553 struct wpi_softc *sc = ifp->if_softc; 3554 3555 /* 3556 * Only need to set the channel in Monitor mode. AP scanning and auth 3557 * are already taken care of by their respective firmware commands. 3558 */ 3559 if (ic->ic_opmode == IEEE80211_M_MONITOR) 3560 wpi_queue_cmd(sc, WPI_SET_CHAN, 0, WPI_QUEUE_NORMAL); 3561 } 3562 3563 /** 3564 * Called by net80211 to indicate that we need to scan the current 3565 * channel. The channel is previously be set via the wpi_set_channel 3566 * callback. 3567 */ 3568 static void 3569 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3570 { 3571 struct ieee80211vap *vap = ss->ss_vap; 3572 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3573 struct wpi_softc *sc = ifp->if_softc; 3574 3575 wpi_queue_cmd(sc, WPI_SCAN_CURCHAN, 0, WPI_QUEUE_NORMAL); 3576 } 3577 3578 /** 3579 * Called by the net80211 framework to indicate 3580 * the minimum dwell time has been met, terminate the scan. 3581 * We don't actually terminate the scan as the firmware will notify 3582 * us when it's finished and we have no way to interrupt it. 3583 */ 3584 static void 3585 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3586 { 3587 /* NB: don't try to abort scan; wait for firmware to finish */ 3588 } 3589 3590 /** 3591 * The ops function is called to perform some actual work. 3592 * because we can't sleep from any of the ic callbacks, we queue an 3593 * op task with wpi_queue_cmd and have the taskqueue process that task. 3594 * The task that gets cued is a op task, which ends up calling this function. 3595 */ 3596 static void 3597 wpi_ops(void *arg0, int pending) 3598 { 3599 struct wpi_softc *sc = arg0; 3600 struct ifnet *ifp = sc->sc_ifp; 3601 struct ieee80211com *ic = ifp->if_l2com; 3602 int cmd, arg, error; 3603 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3604 3605 again: 3606 WPI_CMD_LOCK(sc); 3607 cmd = sc->sc_cmd[sc->sc_cmd_cur]; 3608 arg = sc->sc_cmd_arg[sc->sc_cmd_cur]; 3609 3610 if (cmd == 0) { 3611 /* No more commands to process */ 3612 WPI_CMD_UNLOCK(sc); 3613 return; 3614 } 3615 sc->sc_cmd[sc->sc_cmd_cur] = 0; /* free the slot */ 3616 sc->sc_cmd_arg[sc->sc_cmd_cur] = 0; /* free the slot */ 3617 sc->sc_cmd_cur = (sc->sc_cmd_cur + 1) % WPI_CMD_MAXOPS; 3618 WPI_CMD_UNLOCK(sc); 3619 WPI_LOCK(sc); 3620 3621 DPRINTFN(WPI_DEBUG_OPS,("wpi_ops: command: %d\n", cmd)); 3622 3623 switch (cmd) { 3624 case WPI_RESTART: 3625 wpi_init_locked(sc, 0); 3626 WPI_UNLOCK(sc); 3627 return; 3628 3629 case WPI_RF_RESTART: 3630 wpi_rfkill_resume(sc); 3631 WPI_UNLOCK(sc); 3632 return; 3633 } 3634 3635 if (!(sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)) { 3636 WPI_UNLOCK(sc); 3637 return; 3638 } 3639 3640 switch (cmd) { 3641 case WPI_SCAN_START: 3642 /* make the link LED blink while we're scanning */ 3643 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3644 sc->flags |= WPI_FLAG_SCANNING; 3645 break; 3646 3647 case WPI_SCAN_STOP: 3648 sc->flags &= ~WPI_FLAG_SCANNING; 3649 break; 3650 3651 case WPI_SCAN_CURCHAN: 3652 if (wpi_scan(sc)) 3653 ieee80211_cancel_scan(vap); 3654 break; 3655 3656 case WPI_SET_CHAN: 3657 error = wpi_config(sc); 3658 if (error != 0) 3659 device_printf(sc->sc_dev, 3660 "error %d settting channel\n", error); 3661 break; 3662 3663 case WPI_AUTH: 3664 /* The node must be registered in the firmware before auth */ 3665 error = wpi_auth(sc, vap); 3666 WPI_UNLOCK(sc); 3667 if (error != 0) { 3668 device_printf(sc->sc_dev, 3669 "%s: could not move to auth state, error %d\n", 3670 __func__, error); 3671 return; 3672 } 3673 IEEE80211_LOCK(ic); 3674 WPI_VAP(vap)->newstate(vap, IEEE80211_S_AUTH, arg); 3675 if (vap->iv_newstate_cb != NULL) 3676 vap->iv_newstate_cb(vap, IEEE80211_S_AUTH, arg); 3677 IEEE80211_UNLOCK(ic); 3678 goto again; 3679 3680 case WPI_RUN: 3681 error = wpi_run(sc, vap); 3682 WPI_UNLOCK(sc); 3683 if (error != 0) { 3684 device_printf(sc->sc_dev, 3685 "%s: could not move to run state, error %d\n", 3686 __func__, error); 3687 return; 3688 } 3689 IEEE80211_LOCK(ic); 3690 WPI_VAP(vap)->newstate(vap, IEEE80211_S_RUN, arg); 3691 if (vap->iv_newstate_cb != NULL) 3692 vap->iv_newstate_cb(vap, IEEE80211_S_RUN, arg); 3693 IEEE80211_UNLOCK(ic); 3694 goto again; 3695 } 3696 WPI_UNLOCK(sc); 3697 3698 /* Take another pass */ 3699 goto again; 3700 } 3701 3702 /** 3703 * queue a command for later execution in a different thread. 3704 * This is needed as the net80211 callbacks do not allow 3705 * sleeping, since we need to sleep to confirm commands have 3706 * been processed by the firmware, we must defer execution to 3707 * a sleep enabled thread. 3708 */ 3709 static int 3710 wpi_queue_cmd(struct wpi_softc *sc, int cmd, int arg, int flush) 3711 { 3712 WPI_CMD_LOCK(sc); 3713 3714 if (flush) { 3715 memset(sc->sc_cmd, 0, sizeof (sc->sc_cmd)); 3716 memset(sc->sc_cmd_arg, 0, sizeof (sc->sc_cmd_arg)); 3717 sc->sc_cmd_cur = 0; 3718 sc->sc_cmd_next = 0; 3719 } 3720 3721 if (sc->sc_cmd[sc->sc_cmd_next] != 0) { 3722 WPI_CMD_UNLOCK(sc); 3723 DPRINTF(("%s: command %d dropped\n", __func__, cmd)); 3724 return (EBUSY); 3725 } 3726 3727 sc->sc_cmd[sc->sc_cmd_next] = cmd; 3728 sc->sc_cmd_arg[sc->sc_cmd_next] = arg; 3729 sc->sc_cmd_next = (sc->sc_cmd_next + 1) % WPI_CMD_MAXOPS; 3730 3731 taskqueue_enqueue(sc->sc_tq, &sc->sc_opstask); 3732 3733 WPI_CMD_UNLOCK(sc); 3734 3735 return 0; 3736 } 3737 3738 /* 3739 * Allocate DMA-safe memory for firmware transfer. 3740 */ 3741 static int 3742 wpi_alloc_fwmem(struct wpi_softc *sc) 3743 { 3744 /* allocate enough contiguous space to store text and data */ 3745 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3746 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3747 BUS_DMA_NOWAIT); 3748 } 3749 3750 static void 3751 wpi_free_fwmem(struct wpi_softc *sc) 3752 { 3753 wpi_dma_contig_free(&sc->fw_dma); 3754 } 3755 3756 /** 3757 * Called every second, wpi_watchdog used by the watch dog timer 3758 * to check that the card is still alive 3759 */ 3760 static void 3761 wpi_watchdog(void *arg) 3762 { 3763 struct wpi_softc *sc = arg; 3764 struct ifnet *ifp = sc->sc_ifp; 3765 uint32_t tmp; 3766 3767 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3768 3769 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3770 /* No need to lock firmware memory */ 3771 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3772 3773 if ((tmp & 0x1) == 0) { 3774 /* Radio kill switch is still off */ 3775 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3776 return; 3777 } 3778 3779 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3780 wpi_queue_cmd(sc, WPI_RF_RESTART, 0, WPI_QUEUE_CLEAR); 3781 return; 3782 } 3783 3784 if (sc->sc_tx_timer > 0) { 3785 if (--sc->sc_tx_timer == 0) { 3786 device_printf(sc->sc_dev,"device timeout\n"); 3787 ifp->if_oerrors++; 3788 wpi_queue_cmd(sc, WPI_RESTART, 0, WPI_QUEUE_CLEAR); 3789 } 3790 } 3791 if (sc->sc_scan_timer > 0) { 3792 struct ifnet *ifp = sc->sc_ifp; 3793 struct ieee80211com *ic = ifp->if_l2com; 3794 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3795 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3796 device_printf(sc->sc_dev,"scan timeout\n"); 3797 ieee80211_cancel_scan(vap); 3798 wpi_queue_cmd(sc, WPI_RESTART, 0, WPI_QUEUE_CLEAR); 3799 } 3800 } 3801 3802 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3803 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3804 } 3805 3806 #ifdef WPI_DEBUG 3807 static const char *wpi_cmd_str(int cmd) 3808 { 3809 switch (cmd) { 3810 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3811 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3812 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3813 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3814 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3815 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3816 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3817 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3818 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3819 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3820 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3821 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3822 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3823 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3824 3825 default: 3826 KASSERT(1, ("Unknown Command: %d\n", cmd)); 3827 return "UNKNOWN CMD"; /* Make the compiler happy */ 3828 } 3829 } 3830 #endif 3831 3832 MODULE_DEPEND(wpi, pci, 1, 1, 1); 3833 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3834 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3835 MODULE_DEPEND(wpi, wlan_amrr, 1, 1, 1); 3836