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 #define WPI_DEBUG_SET (wpi_debug != 0) 112 113 enum { 114 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ 115 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ 116 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ 117 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ 118 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ 119 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ 120 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ 121 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ 122 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ 123 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ 124 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ 125 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ 126 WPI_DEBUG_ANY = 0xffffffff 127 }; 128 129 static int wpi_debug = 1; 130 SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level"); 131 TUNABLE_INT("debug.wpi", &wpi_debug); 132 133 #else 134 #define DPRINTF(x) 135 #define DPRINTFN(n, x) 136 #define WPI_DEBUG_SET 0 137 #endif 138 139 struct wpi_ident { 140 uint16_t vendor; 141 uint16_t device; 142 uint16_t subdevice; 143 const char *name; 144 }; 145 146 static const struct wpi_ident wpi_ident_table[] = { 147 /* The below entries support ABG regardless of the subid */ 148 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 149 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 150 /* The below entries only support BG */ 151 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 152 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 153 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 154 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 155 { 0, 0, 0, NULL } 156 }; 157 158 static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 159 const char name[IFNAMSIZ], int unit, int opmode, 160 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 161 const uint8_t mac[IEEE80211_ADDR_LEN]); 162 static void wpi_vap_delete(struct ieee80211vap *); 163 static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 164 void **, bus_size_t, bus_size_t, int); 165 static void wpi_dma_contig_free(struct wpi_dma_info *); 166 static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 167 static int wpi_alloc_shared(struct wpi_softc *); 168 static void wpi_free_shared(struct wpi_softc *); 169 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 170 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 171 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 172 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 173 int, int); 174 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 175 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 176 static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 177 const uint8_t mac[IEEE80211_ADDR_LEN]); 178 static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 179 static void wpi_mem_lock(struct wpi_softc *); 180 static void wpi_mem_unlock(struct wpi_softc *); 181 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 182 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 183 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 184 const uint32_t *, int); 185 static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 186 static int wpi_alloc_fwmem(struct wpi_softc *); 187 static void wpi_free_fwmem(struct wpi_softc *); 188 static int wpi_load_firmware(struct wpi_softc *); 189 static void wpi_unload_firmware(struct wpi_softc *); 190 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 191 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 192 struct wpi_rx_data *); 193 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 194 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 195 static void wpi_notif_intr(struct wpi_softc *); 196 static void wpi_intr(void *); 197 static uint8_t wpi_plcp_signal(int); 198 static void wpi_watchdog(void *); 199 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 200 struct ieee80211_node *, int); 201 static void wpi_start(struct ifnet *); 202 static void wpi_start_locked(struct ifnet *); 203 static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 204 const struct ieee80211_bpf_params *); 205 static void wpi_scan_start(struct ieee80211com *); 206 static void wpi_scan_end(struct ieee80211com *); 207 static void wpi_set_channel(struct ieee80211com *); 208 static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 209 static void wpi_scan_mindwell(struct ieee80211_scan_state *); 210 static int wpi_ioctl(struct ifnet *, u_long, caddr_t); 211 static void wpi_read_eeprom(struct wpi_softc *, 212 uint8_t macaddr[IEEE80211_ADDR_LEN]); 213 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 214 static void wpi_read_eeprom_group(struct wpi_softc *, int); 215 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 216 static int wpi_wme_update(struct ieee80211com *); 217 static int wpi_mrr_setup(struct wpi_softc *); 218 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 219 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 220 #if 0 221 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 222 #endif 223 static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 224 static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 225 static int wpi_scan(struct wpi_softc *); 226 static int wpi_config(struct wpi_softc *); 227 static void wpi_stop_master(struct wpi_softc *); 228 static int wpi_power_up(struct wpi_softc *); 229 static int wpi_reset(struct wpi_softc *); 230 static void wpi_hwreset(void *, int); 231 static void wpi_rfreset(void *, int); 232 static void wpi_hw_config(struct wpi_softc *); 233 static void wpi_init(void *); 234 static void wpi_init_locked(struct wpi_softc *, int); 235 static void wpi_stop(struct wpi_softc *); 236 static void wpi_stop_locked(struct wpi_softc *); 237 238 static void wpi_newassoc(struct ieee80211_node *, int); 239 static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 240 int); 241 static void wpi_calib_timeout(void *); 242 static void wpi_power_calibration(struct wpi_softc *, int); 243 static int wpi_get_power_index(struct wpi_softc *, 244 struct wpi_power_group *, struct ieee80211_channel *, int); 245 #ifdef WPI_DEBUG 246 static const char *wpi_cmd_str(int); 247 #endif 248 static int wpi_probe(device_t); 249 static int wpi_attach(device_t); 250 static int wpi_detach(device_t); 251 static int wpi_shutdown(device_t); 252 static int wpi_suspend(device_t); 253 static int wpi_resume(device_t); 254 255 256 static device_method_t wpi_methods[] = { 257 /* Device interface */ 258 DEVMETHOD(device_probe, wpi_probe), 259 DEVMETHOD(device_attach, wpi_attach), 260 DEVMETHOD(device_detach, wpi_detach), 261 DEVMETHOD(device_shutdown, wpi_shutdown), 262 DEVMETHOD(device_suspend, wpi_suspend), 263 DEVMETHOD(device_resume, wpi_resume), 264 265 { 0, 0 } 266 }; 267 268 static driver_t wpi_driver = { 269 "wpi", 270 wpi_methods, 271 sizeof (struct wpi_softc) 272 }; 273 274 static devclass_t wpi_devclass; 275 276 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, 0, 0); 277 278 static const uint8_t wpi_ridx_to_plcp[] = { 279 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 280 /* R1-R4 (ral/ural is R4-R1) */ 281 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 282 /* CCK: device-dependent */ 283 10, 20, 55, 110 284 }; 285 static const uint8_t wpi_ridx_to_rate[] = { 286 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 287 2, 4, 11, 22 /*CCK */ 288 }; 289 290 291 static int 292 wpi_probe(device_t dev) 293 { 294 const struct wpi_ident *ident; 295 296 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 297 if (pci_get_vendor(dev) == ident->vendor && 298 pci_get_device(dev) == ident->device) { 299 device_set_desc(dev, ident->name); 300 return 0; 301 } 302 } 303 return ENXIO; 304 } 305 306 /** 307 * Load the firmare image from disk to the allocated dma buffer. 308 * we also maintain the reference to the firmware pointer as there 309 * is times where we may need to reload the firmware but we are not 310 * in a context that can access the filesystem (ie taskq cause by restart) 311 * 312 * @return 0 on success, an errno on failure 313 */ 314 static int 315 wpi_load_firmware(struct wpi_softc *sc) 316 { 317 const struct firmware *fp; 318 struct wpi_dma_info *dma = &sc->fw_dma; 319 const struct wpi_firmware_hdr *hdr; 320 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 321 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 322 int error; 323 324 DPRINTFN(WPI_DEBUG_FIRMWARE, 325 ("Attempting Loading Firmware from wpi_fw module\n")); 326 327 WPI_UNLOCK(sc); 328 329 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 330 device_printf(sc->sc_dev, 331 "could not load firmware image 'wpifw'\n"); 332 error = ENOENT; 333 WPI_LOCK(sc); 334 goto fail; 335 } 336 337 fp = sc->fw_fp; 338 339 WPI_LOCK(sc); 340 341 /* Validate the firmware is minimum a particular version */ 342 if (fp->version < WPI_FW_MINVERSION) { 343 device_printf(sc->sc_dev, 344 "firmware version is too old. Need %d, got %d\n", 345 WPI_FW_MINVERSION, 346 fp->version); 347 error = ENXIO; 348 goto fail; 349 } 350 351 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 352 device_printf(sc->sc_dev, 353 "firmware file too short: %zu bytes\n", fp->datasize); 354 error = ENXIO; 355 goto fail; 356 } 357 358 hdr = (const struct wpi_firmware_hdr *)fp->data; 359 360 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 361 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 362 363 rtextsz = le32toh(hdr->rtextsz); 364 rdatasz = le32toh(hdr->rdatasz); 365 itextsz = le32toh(hdr->itextsz); 366 idatasz = le32toh(hdr->idatasz); 367 btextsz = le32toh(hdr->btextsz); 368 369 /* check that all firmware segments are present */ 370 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 371 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 372 device_printf(sc->sc_dev, 373 "firmware file too short: %zu bytes\n", fp->datasize); 374 error = ENXIO; /* XXX appropriate error code? */ 375 goto fail; 376 } 377 378 /* get pointers to firmware segments */ 379 rtext = (const uint8_t *)(hdr + 1); 380 rdata = rtext + rtextsz; 381 itext = rdata + rdatasz; 382 idata = itext + itextsz; 383 btext = idata + idatasz; 384 385 DPRINTFN(WPI_DEBUG_FIRMWARE, 386 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 387 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 388 (le32toh(hdr->version) & 0xff000000) >> 24, 389 (le32toh(hdr->version) & 0x00ff0000) >> 16, 390 (le32toh(hdr->version) & 0x0000ffff), 391 rtextsz, rdatasz, 392 itextsz, idatasz, btextsz)); 393 394 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 395 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 396 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 397 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 398 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 399 400 /* sanity checks */ 401 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 402 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 403 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 404 idatasz > WPI_FW_INIT_DATA_MAXSZ || 405 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 406 (btextsz & 3) != 0) { 407 device_printf(sc->sc_dev, "firmware invalid\n"); 408 error = EINVAL; 409 goto fail; 410 } 411 412 /* copy initialization images into pre-allocated DMA-safe memory */ 413 memcpy(dma->vaddr, idata, idatasz); 414 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 415 416 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 417 418 /* tell adapter where to find initialization images */ 419 wpi_mem_lock(sc); 420 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 421 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 422 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 423 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 424 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 425 wpi_mem_unlock(sc); 426 427 /* load firmware boot code */ 428 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 429 device_printf(sc->sc_dev, "Failed to load microcode\n"); 430 goto fail; 431 } 432 433 /* now press "execute" */ 434 WPI_WRITE(sc, WPI_RESET, 0); 435 436 /* wait at most one second for the first alive notification */ 437 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 438 device_printf(sc->sc_dev, 439 "timeout waiting for adapter to initialize\n"); 440 goto fail; 441 } 442 443 /* copy runtime images into pre-allocated DMA-sage memory */ 444 memcpy(dma->vaddr, rdata, rdatasz); 445 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 446 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 447 448 /* tell adapter where to find runtime images */ 449 wpi_mem_lock(sc); 450 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 451 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 452 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 453 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 454 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 455 wpi_mem_unlock(sc); 456 457 /* wait at most one second for the first alive notification */ 458 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 459 device_printf(sc->sc_dev, 460 "timeout waiting for adapter to initialize2\n"); 461 goto fail; 462 } 463 464 DPRINTFN(WPI_DEBUG_FIRMWARE, 465 ("Firmware loaded to driver successfully\n")); 466 return error; 467 fail: 468 wpi_unload_firmware(sc); 469 return error; 470 } 471 472 /** 473 * Free the referenced firmware image 474 */ 475 static void 476 wpi_unload_firmware(struct wpi_softc *sc) 477 { 478 479 if (sc->fw_fp) { 480 WPI_UNLOCK(sc); 481 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 482 WPI_LOCK(sc); 483 sc->fw_fp = NULL; 484 } 485 } 486 487 static int 488 wpi_attach(device_t dev) 489 { 490 struct wpi_softc *sc = device_get_softc(dev); 491 struct ifnet *ifp; 492 struct ieee80211com *ic; 493 int ac, error, supportsa = 1; 494 uint32_t tmp; 495 const struct wpi_ident *ident; 496 uint8_t macaddr[IEEE80211_ADDR_LEN]; 497 498 sc->sc_dev = dev; 499 500 if (bootverbose || WPI_DEBUG_SET) 501 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 502 503 /* 504 * Some card's only support 802.11b/g not a, check to see if 505 * this is one such card. A 0x0 in the subdevice table indicates 506 * the entire subdevice range is to be ignored. 507 */ 508 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 509 if (ident->subdevice && 510 pci_get_subdevice(dev) == ident->subdevice) { 511 supportsa = 0; 512 break; 513 } 514 } 515 516 /* Create the tasks that can be queued */ 517 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc); 518 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc); 519 520 WPI_LOCK_INIT(sc); 521 522 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 523 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 524 525 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 526 device_printf(dev, "chip is in D%d power mode " 527 "-- setting to D0\n", pci_get_powerstate(dev)); 528 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 529 } 530 531 /* disable the retry timeout register */ 532 pci_write_config(dev, 0x41, 0, 1); 533 534 /* enable bus-mastering */ 535 pci_enable_busmaster(dev); 536 537 sc->mem_rid = PCIR_BAR(0); 538 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 539 RF_ACTIVE); 540 if (sc->mem == NULL) { 541 device_printf(dev, "could not allocate memory resource\n"); 542 error = ENOMEM; 543 goto fail; 544 } 545 546 sc->sc_st = rman_get_bustag(sc->mem); 547 sc->sc_sh = rman_get_bushandle(sc->mem); 548 549 sc->irq_rid = 0; 550 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 551 RF_ACTIVE | RF_SHAREABLE); 552 if (sc->irq == NULL) { 553 device_printf(dev, "could not allocate interrupt resource\n"); 554 error = ENOMEM; 555 goto fail; 556 } 557 558 /* 559 * Allocate DMA memory for firmware transfers. 560 */ 561 if ((error = wpi_alloc_fwmem(sc)) != 0) { 562 printf(": could not allocate firmware memory\n"); 563 error = ENOMEM; 564 goto fail; 565 } 566 567 /* 568 * Put adapter into a known state. 569 */ 570 if ((error = wpi_reset(sc)) != 0) { 571 device_printf(dev, "could not reset adapter\n"); 572 goto fail; 573 } 574 575 wpi_mem_lock(sc); 576 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 577 if (bootverbose || WPI_DEBUG_SET) 578 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 579 580 wpi_mem_unlock(sc); 581 582 /* Allocate shared page */ 583 if ((error = wpi_alloc_shared(sc)) != 0) { 584 device_printf(dev, "could not allocate shared page\n"); 585 goto fail; 586 } 587 588 /* tx data queues - 4 for QoS purposes */ 589 for (ac = 0; ac < WME_NUM_AC; ac++) { 590 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 591 if (error != 0) { 592 device_printf(dev, "could not allocate Tx ring %d\n",ac); 593 goto fail; 594 } 595 } 596 597 /* command queue to talk to the card's firmware */ 598 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 599 if (error != 0) { 600 device_printf(dev, "could not allocate command ring\n"); 601 goto fail; 602 } 603 604 /* receive data queue */ 605 error = wpi_alloc_rx_ring(sc, &sc->rxq); 606 if (error != 0) { 607 device_printf(dev, "could not allocate Rx ring\n"); 608 goto fail; 609 } 610 611 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 612 if (ifp == NULL) { 613 device_printf(dev, "can not if_alloc()\n"); 614 error = ENOMEM; 615 goto fail; 616 } 617 ic = ifp->if_l2com; 618 619 ic->ic_ifp = ifp; 620 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 621 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 622 623 /* set device capabilities */ 624 ic->ic_caps = 625 IEEE80211_C_STA /* station mode supported */ 626 | IEEE80211_C_MONITOR /* monitor mode supported */ 627 | IEEE80211_C_TXPMGT /* tx power management */ 628 | IEEE80211_C_SHSLOT /* short slot time supported */ 629 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 630 | IEEE80211_C_WPA /* 802.11i */ 631 /* XXX looks like WME is partly supported? */ 632 #if 0 633 | IEEE80211_C_IBSS /* IBSS mode support */ 634 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 635 | IEEE80211_C_WME /* 802.11e */ 636 | IEEE80211_C_HOSTAP /* Host access point mode */ 637 #endif 638 ; 639 640 /* 641 * Read in the eeprom and also setup the channels for 642 * net80211. We don't set the rates as net80211 does this for us 643 */ 644 wpi_read_eeprom(sc, macaddr); 645 646 if (bootverbose || WPI_DEBUG_SET) { 647 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 648 device_printf(sc->sc_dev, "Hardware Type: %c\n", 649 sc->type > 1 ? 'B': '?'); 650 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 651 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 652 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 653 supportsa ? "does" : "does not"); 654 655 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 656 what sc->rev really represents - benjsc 20070615 */ 657 } 658 659 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 660 ifp->if_softc = sc; 661 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 662 ifp->if_init = wpi_init; 663 ifp->if_ioctl = wpi_ioctl; 664 ifp->if_start = wpi_start; 665 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 666 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 667 IFQ_SET_READY(&ifp->if_snd); 668 669 ieee80211_ifattach(ic, macaddr); 670 /* override default methods */ 671 ic->ic_node_alloc = wpi_node_alloc; 672 ic->ic_newassoc = wpi_newassoc; 673 ic->ic_raw_xmit = wpi_raw_xmit; 674 ic->ic_wme.wme_update = wpi_wme_update; 675 ic->ic_scan_start = wpi_scan_start; 676 ic->ic_scan_end = wpi_scan_end; 677 ic->ic_set_channel = wpi_set_channel; 678 ic->ic_scan_curchan = wpi_scan_curchan; 679 ic->ic_scan_mindwell = wpi_scan_mindwell; 680 681 ic->ic_vap_create = wpi_vap_create; 682 ic->ic_vap_delete = wpi_vap_delete; 683 684 bpfattach(ifp, DLT_IEEE802_11_RADIO, 685 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap)); 686 687 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 688 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 689 sc->sc_rxtap.wr_ihdr.it_present = htole32(WPI_RX_RADIOTAP_PRESENT); 690 691 sc->sc_txtap_len = sizeof sc->sc_txtap; 692 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 693 sc->sc_txtap.wt_ihdr.it_present = htole32(WPI_TX_RADIOTAP_PRESENT); 694 695 /* 696 * Hook our interrupt after all initialization is complete. 697 */ 698 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 699 NULL, wpi_intr, sc, &sc->sc_ih); 700 if (error != 0) { 701 device_printf(dev, "could not set up interrupt\n"); 702 goto fail; 703 } 704 705 if (bootverbose) 706 ieee80211_announce(ic); 707 #ifdef XXX_DEBUG 708 ieee80211_announce_channels(ic); 709 #endif 710 return 0; 711 712 fail: wpi_detach(dev); 713 return ENXIO; 714 } 715 716 static int 717 wpi_detach(device_t dev) 718 { 719 struct wpi_softc *sc = device_get_softc(dev); 720 struct ifnet *ifp = sc->sc_ifp; 721 struct ieee80211com *ic = ifp->if_l2com; 722 int ac; 723 724 ieee80211_draintask(ic, &sc->sc_restarttask); 725 ieee80211_draintask(ic, &sc->sc_radiotask); 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 WPI_LOCK_DESTROY(sc); 765 766 return 0; 767 } 768 769 static struct ieee80211vap * 770 wpi_vap_create(struct ieee80211com *ic, 771 const char name[IFNAMSIZ], int unit, int opmode, int flags, 772 const uint8_t bssid[IEEE80211_ADDR_LEN], 773 const uint8_t mac[IEEE80211_ADDR_LEN]) 774 { 775 struct wpi_vap *wvp; 776 struct ieee80211vap *vap; 777 778 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 779 return NULL; 780 wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap), 781 M_80211_VAP, M_NOWAIT | M_ZERO); 782 if (wvp == NULL) 783 return NULL; 784 vap = &wvp->vap; 785 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 786 /* override with driver methods */ 787 wvp->newstate = vap->iv_newstate; 788 vap->iv_newstate = wpi_newstate; 789 790 ieee80211_amrr_init(&wvp->amrr, vap, 791 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD, 792 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD, 793 500 /*ms*/); 794 795 /* complete setup */ 796 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 797 ic->ic_opmode = opmode; 798 return vap; 799 } 800 801 static void 802 wpi_vap_delete(struct ieee80211vap *vap) 803 { 804 struct wpi_vap *wvp = WPI_VAP(vap); 805 806 ieee80211_amrr_cleanup(&wvp->amrr); 807 ieee80211_vap_detach(vap); 808 free(wvp, M_80211_VAP); 809 } 810 811 static void 812 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 813 { 814 if (error != 0) 815 return; 816 817 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 818 819 *(bus_addr_t *)arg = segs[0].ds_addr; 820 } 821 822 /* 823 * Allocates a contiguous block of dma memory of the requested size and 824 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 825 * allocations greater than 4096 may fail. Hence if the requested alignment is 826 * greater we allocate 'alignment' size extra memory and shift the vaddr and 827 * paddr after the dma load. This bypasses the problem at the cost of a little 828 * more memory. 829 */ 830 static int 831 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 832 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 833 { 834 int error; 835 bus_size_t align; 836 bus_size_t reqsize; 837 838 DPRINTFN(WPI_DEBUG_DMA, 839 ("Size: %zd - alignment %zd\n", size, alignment)); 840 841 dma->size = size; 842 dma->tag = NULL; 843 844 if (alignment > 4096) { 845 align = PAGE_SIZE; 846 reqsize = size + alignment; 847 } else { 848 align = alignment; 849 reqsize = size; 850 } 851 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 852 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 853 NULL, NULL, reqsize, 854 1, reqsize, flags, 855 NULL, NULL, &dma->tag); 856 if (error != 0) { 857 device_printf(sc->sc_dev, 858 "could not create shared page DMA tag\n"); 859 goto fail; 860 } 861 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 862 flags | BUS_DMA_ZERO, &dma->map); 863 if (error != 0) { 864 device_printf(sc->sc_dev, 865 "could not allocate shared page DMA memory\n"); 866 goto fail; 867 } 868 869 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 870 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 871 872 /* Save the original pointers so we can free all the memory */ 873 dma->paddr = dma->paddr_start; 874 dma->vaddr = dma->vaddr_start; 875 876 /* 877 * Check the alignment and increment by 4096 until we get the 878 * requested alignment. Fail if can't obtain the alignment 879 * we requested. 880 */ 881 if ((dma->paddr & (alignment -1 )) != 0) { 882 int i; 883 884 for (i = 0; i < alignment / 4096; i++) { 885 if ((dma->paddr & (alignment - 1 )) == 0) 886 break; 887 dma->paddr += 4096; 888 dma->vaddr += 4096; 889 } 890 if (i == alignment / 4096) { 891 device_printf(sc->sc_dev, 892 "alignment requirement was not satisfied\n"); 893 goto fail; 894 } 895 } 896 897 if (error != 0) { 898 device_printf(sc->sc_dev, 899 "could not load shared page DMA map\n"); 900 goto fail; 901 } 902 903 if (kvap != NULL) 904 *kvap = dma->vaddr; 905 906 return 0; 907 908 fail: 909 wpi_dma_contig_free(dma); 910 return error; 911 } 912 913 static void 914 wpi_dma_contig_free(struct wpi_dma_info *dma) 915 { 916 if (dma->tag) { 917 if (dma->map != NULL) { 918 if (dma->paddr_start != 0) { 919 bus_dmamap_sync(dma->tag, dma->map, 920 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 921 bus_dmamap_unload(dma->tag, dma->map); 922 } 923 bus_dmamem_free(dma->tag, &dma->vaddr_start, dma->map); 924 } 925 bus_dma_tag_destroy(dma->tag); 926 } 927 } 928 929 /* 930 * Allocate a shared page between host and NIC. 931 */ 932 static int 933 wpi_alloc_shared(struct wpi_softc *sc) 934 { 935 int error; 936 937 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 938 (void **)&sc->shared, sizeof (struct wpi_shared), 939 PAGE_SIZE, 940 BUS_DMA_NOWAIT); 941 942 if (error != 0) { 943 device_printf(sc->sc_dev, 944 "could not allocate shared area DMA memory\n"); 945 } 946 947 return error; 948 } 949 950 static void 951 wpi_free_shared(struct wpi_softc *sc) 952 { 953 wpi_dma_contig_free(&sc->shared_dma); 954 } 955 956 static int 957 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 958 { 959 960 int i, error; 961 962 ring->cur = 0; 963 964 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 965 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 966 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 967 968 if (error != 0) { 969 device_printf(sc->sc_dev, 970 "%s: could not allocate rx ring DMA memory, error %d\n", 971 __func__, error); 972 goto fail; 973 } 974 975 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 976 BUS_SPACE_MAXADDR_32BIT, 977 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 978 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 979 if (error != 0) { 980 device_printf(sc->sc_dev, 981 "%s: bus_dma_tag_create_failed, error %d\n", 982 __func__, error); 983 goto fail; 984 } 985 986 /* 987 * Setup Rx buffers. 988 */ 989 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 990 struct wpi_rx_data *data = &ring->data[i]; 991 struct mbuf *m; 992 bus_addr_t paddr; 993 994 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 995 if (error != 0) { 996 device_printf(sc->sc_dev, 997 "%s: bus_dmamap_create failed, error %d\n", 998 __func__, error); 999 goto fail; 1000 } 1001 m = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1002 if (m == NULL) { 1003 device_printf(sc->sc_dev, 1004 "%s: could not allocate rx mbuf\n", __func__); 1005 error = ENOMEM; 1006 goto fail; 1007 } 1008 /* map page */ 1009 error = bus_dmamap_load(ring->data_dmat, data->map, 1010 mtod(m, caddr_t), MJUMPAGESIZE, 1011 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1012 if (error != 0 && error != EFBIG) { 1013 device_printf(sc->sc_dev, 1014 "%s: bus_dmamap_load failed, error %d\n", 1015 __func__, error); 1016 m_freem(m); 1017 error = ENOMEM; /* XXX unique code */ 1018 goto fail; 1019 } 1020 bus_dmamap_sync(ring->data_dmat, data->map, 1021 BUS_DMASYNC_PREWRITE); 1022 1023 data->m = m; 1024 ring->desc[i] = htole32(paddr); 1025 } 1026 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1027 BUS_DMASYNC_PREWRITE); 1028 return 0; 1029 fail: 1030 wpi_free_rx_ring(sc, ring); 1031 return error; 1032 } 1033 1034 static void 1035 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1036 { 1037 int ntries; 1038 1039 wpi_mem_lock(sc); 1040 1041 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1042 1043 for (ntries = 0; ntries < 100; ntries++) { 1044 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1045 break; 1046 DELAY(10); 1047 } 1048 1049 wpi_mem_unlock(sc); 1050 1051 #ifdef WPI_DEBUG 1052 if (ntries == 100 && wpi_debug > 0) 1053 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1054 #endif 1055 1056 ring->cur = 0; 1057 } 1058 1059 static void 1060 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1061 { 1062 int i; 1063 1064 wpi_dma_contig_free(&ring->desc_dma); 1065 1066 for (i = 0; i < WPI_RX_RING_COUNT; i++) 1067 if (ring->data[i].m != NULL) 1068 m_freem(ring->data[i].m); 1069 } 1070 1071 static int 1072 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1073 int qid) 1074 { 1075 struct wpi_tx_data *data; 1076 int i, error; 1077 1078 ring->qid = qid; 1079 ring->count = count; 1080 ring->queued = 0; 1081 ring->cur = 0; 1082 ring->data = NULL; 1083 1084 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1085 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1086 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1087 1088 if (error != 0) { 1089 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1090 goto fail; 1091 } 1092 1093 /* update shared page with ring's base address */ 1094 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1095 1096 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1097 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1098 BUS_DMA_NOWAIT); 1099 1100 if (error != 0) { 1101 device_printf(sc->sc_dev, 1102 "could not allocate tx command DMA memory\n"); 1103 goto fail; 1104 } 1105 1106 ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1107 M_NOWAIT | M_ZERO); 1108 if (ring->data == NULL) { 1109 device_printf(sc->sc_dev, 1110 "could not allocate tx data slots\n"); 1111 goto fail; 1112 } 1113 1114 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1115 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1116 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1117 &ring->data_dmat); 1118 if (error != 0) { 1119 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1120 goto fail; 1121 } 1122 1123 for (i = 0; i < count; i++) { 1124 data = &ring->data[i]; 1125 1126 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1127 if (error != 0) { 1128 device_printf(sc->sc_dev, 1129 "could not create tx buf DMA map\n"); 1130 goto fail; 1131 } 1132 bus_dmamap_sync(ring->data_dmat, data->map, 1133 BUS_DMASYNC_PREWRITE); 1134 } 1135 1136 return 0; 1137 1138 fail: 1139 wpi_free_tx_ring(sc, ring); 1140 return error; 1141 } 1142 1143 static void 1144 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1145 { 1146 struct wpi_tx_data *data; 1147 int i, ntries; 1148 1149 wpi_mem_lock(sc); 1150 1151 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1152 for (ntries = 0; ntries < 100; ntries++) { 1153 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1154 break; 1155 DELAY(10); 1156 } 1157 #ifdef WPI_DEBUG 1158 if (ntries == 100 && wpi_debug > 0) 1159 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1160 ring->qid); 1161 #endif 1162 wpi_mem_unlock(sc); 1163 1164 for (i = 0; i < ring->count; i++) { 1165 data = &ring->data[i]; 1166 1167 if (data->m != NULL) { 1168 bus_dmamap_unload(ring->data_dmat, data->map); 1169 m_freem(data->m); 1170 data->m = NULL; 1171 } 1172 } 1173 1174 ring->queued = 0; 1175 ring->cur = 0; 1176 } 1177 1178 static void 1179 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1180 { 1181 struct wpi_tx_data *data; 1182 int i; 1183 1184 wpi_dma_contig_free(&ring->desc_dma); 1185 wpi_dma_contig_free(&ring->cmd_dma); 1186 1187 if (ring->data != NULL) { 1188 for (i = 0; i < ring->count; i++) { 1189 data = &ring->data[i]; 1190 1191 if (data->m != NULL) { 1192 bus_dmamap_sync(ring->data_dmat, data->map, 1193 BUS_DMASYNC_POSTWRITE); 1194 bus_dmamap_unload(ring->data_dmat, data->map); 1195 m_freem(data->m); 1196 data->m = NULL; 1197 } 1198 } 1199 free(ring->data, M_DEVBUF); 1200 } 1201 1202 if (ring->data_dmat != NULL) 1203 bus_dma_tag_destroy(ring->data_dmat); 1204 } 1205 1206 static int 1207 wpi_shutdown(device_t dev) 1208 { 1209 struct wpi_softc *sc = device_get_softc(dev); 1210 1211 WPI_LOCK(sc); 1212 wpi_stop_locked(sc); 1213 wpi_unload_firmware(sc); 1214 WPI_UNLOCK(sc); 1215 1216 return 0; 1217 } 1218 1219 static int 1220 wpi_suspend(device_t dev) 1221 { 1222 struct wpi_softc *sc = device_get_softc(dev); 1223 1224 wpi_stop(sc); 1225 return 0; 1226 } 1227 1228 static int 1229 wpi_resume(device_t dev) 1230 { 1231 struct wpi_softc *sc = device_get_softc(dev); 1232 struct ifnet *ifp = sc->sc_ifp; 1233 1234 pci_write_config(dev, 0x41, 0, 1); 1235 1236 if (ifp->if_flags & IFF_UP) { 1237 wpi_init(ifp->if_softc); 1238 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1239 wpi_start(ifp); 1240 } 1241 return 0; 1242 } 1243 1244 /* ARGSUSED */ 1245 static struct ieee80211_node * 1246 wpi_node_alloc(struct ieee80211vap *vap __unused, 1247 const uint8_t mac[IEEE80211_ADDR_LEN] __unused) 1248 { 1249 struct wpi_node *wn; 1250 1251 wn = malloc(sizeof (struct wpi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 1252 1253 return &wn->ni; 1254 } 1255 1256 /** 1257 * Called by net80211 when ever there is a change to 80211 state machine 1258 */ 1259 static int 1260 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1261 { 1262 struct wpi_vap *wvp = WPI_VAP(vap); 1263 struct ieee80211com *ic = vap->iv_ic; 1264 struct ifnet *ifp = ic->ic_ifp; 1265 struct wpi_softc *sc = ifp->if_softc; 1266 int error; 1267 1268 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1269 ieee80211_state_name[vap->iv_state], 1270 ieee80211_state_name[nstate], sc->flags)); 1271 1272 IEEE80211_UNLOCK(ic); 1273 WPI_LOCK(sc); 1274 if (nstate == IEEE80211_S_AUTH) { 1275 /* The node must be registered in the firmware before auth */ 1276 error = wpi_auth(sc, vap); 1277 if (error != 0) { 1278 device_printf(sc->sc_dev, 1279 "%s: could not move to auth state, error %d\n", 1280 __func__, error); 1281 } 1282 } 1283 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1284 error = wpi_run(sc, vap); 1285 if (error != 0) { 1286 device_printf(sc->sc_dev, 1287 "%s: could not move to run state, error %d\n", 1288 __func__, error); 1289 } 1290 } 1291 if (nstate == IEEE80211_S_RUN) { 1292 /* RUN -> RUN transition; just restart the timers */ 1293 wpi_calib_timeout(sc); 1294 /* XXX split out rate control timer */ 1295 } 1296 WPI_UNLOCK(sc); 1297 IEEE80211_LOCK(ic); 1298 return wvp->newstate(vap, nstate, arg); 1299 } 1300 1301 /* 1302 * Grab exclusive access to NIC memory. 1303 */ 1304 static void 1305 wpi_mem_lock(struct wpi_softc *sc) 1306 { 1307 int ntries; 1308 uint32_t tmp; 1309 1310 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1311 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1312 1313 /* spin until we actually get the lock */ 1314 for (ntries = 0; ntries < 100; ntries++) { 1315 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1316 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1317 break; 1318 DELAY(10); 1319 } 1320 if (ntries == 100) 1321 device_printf(sc->sc_dev, "could not lock memory\n"); 1322 } 1323 1324 /* 1325 * Release lock on NIC memory. 1326 */ 1327 static void 1328 wpi_mem_unlock(struct wpi_softc *sc) 1329 { 1330 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1331 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1332 } 1333 1334 static uint32_t 1335 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1336 { 1337 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1338 return WPI_READ(sc, WPI_READ_MEM_DATA); 1339 } 1340 1341 static void 1342 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1343 { 1344 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1345 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1346 } 1347 1348 static void 1349 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1350 const uint32_t *data, int wlen) 1351 { 1352 for (; wlen > 0; wlen--, data++, addr+=4) 1353 wpi_mem_write(sc, addr, *data); 1354 } 1355 1356 /* 1357 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1358 * using the traditional bit-bang method. Data is read up until len bytes have 1359 * been obtained. 1360 */ 1361 static uint16_t 1362 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1363 { 1364 int ntries; 1365 uint32_t val; 1366 uint8_t *out = data; 1367 1368 wpi_mem_lock(sc); 1369 1370 for (; len > 0; len -= 2, addr++) { 1371 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1372 1373 for (ntries = 0; ntries < 10; ntries++) { 1374 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1375 break; 1376 DELAY(5); 1377 } 1378 1379 if (ntries == 10) { 1380 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1381 return ETIMEDOUT; 1382 } 1383 1384 *out++= val >> 16; 1385 if (len > 1) 1386 *out ++= val >> 24; 1387 } 1388 1389 wpi_mem_unlock(sc); 1390 1391 return 0; 1392 } 1393 1394 /* 1395 * The firmware text and data segments are transferred to the NIC using DMA. 1396 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1397 * where to find it. Once the NIC has copied the firmware into its internal 1398 * memory, we can free our local copy in the driver. 1399 */ 1400 static int 1401 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1402 { 1403 int error, ntries; 1404 1405 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1406 1407 size /= sizeof(uint32_t); 1408 1409 wpi_mem_lock(sc); 1410 1411 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1412 (const uint32_t *)fw, size); 1413 1414 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1415 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1416 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1417 1418 /* run microcode */ 1419 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1420 1421 /* wait while the adapter is busy copying the firmware */ 1422 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1423 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1424 DPRINTFN(WPI_DEBUG_HW, 1425 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1426 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1427 if (status & WPI_TX_IDLE(6)) { 1428 DPRINTFN(WPI_DEBUG_HW, 1429 ("Status Match! - ntries = %d\n", ntries)); 1430 break; 1431 } 1432 DELAY(10); 1433 } 1434 if (ntries == 1000) { 1435 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1436 error = ETIMEDOUT; 1437 } 1438 1439 /* start the microcode executing */ 1440 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1441 1442 wpi_mem_unlock(sc); 1443 1444 return (error); 1445 } 1446 1447 static void 1448 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1449 struct wpi_rx_data *data) 1450 { 1451 struct ifnet *ifp = sc->sc_ifp; 1452 struct ieee80211com *ic = ifp->if_l2com; 1453 struct wpi_rx_ring *ring = &sc->rxq; 1454 struct wpi_rx_stat *stat; 1455 struct wpi_rx_head *head; 1456 struct wpi_rx_tail *tail; 1457 struct ieee80211_node *ni; 1458 struct mbuf *m, *mnew; 1459 bus_addr_t paddr; 1460 int error; 1461 1462 stat = (struct wpi_rx_stat *)(desc + 1); 1463 1464 if (stat->len > WPI_STAT_MAXLEN) { 1465 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1466 ifp->if_ierrors++; 1467 return; 1468 } 1469 1470 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1471 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1472 1473 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1474 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1475 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1476 (uintmax_t)le64toh(tail->tstamp))); 1477 1478 /* discard Rx frames with bad CRC early */ 1479 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1480 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1481 le32toh(tail->flags))); 1482 ifp->if_ierrors++; 1483 return; 1484 } 1485 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1486 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1487 le16toh(head->len))); 1488 ifp->if_ierrors++; 1489 return; 1490 } 1491 1492 /* XXX don't need mbuf, just dma buffer */ 1493 mnew = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1494 if (mnew == NULL) { 1495 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1496 __func__)); 1497 ifp->if_ierrors++; 1498 return; 1499 } 1500 error = bus_dmamap_load(ring->data_dmat, data->map, 1501 mtod(mnew, caddr_t), MJUMPAGESIZE, 1502 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1503 if (error != 0 && error != EFBIG) { 1504 device_printf(sc->sc_dev, 1505 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1506 m_freem(mnew); 1507 ifp->if_ierrors++; 1508 return; 1509 } 1510 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1511 1512 /* finalize mbuf and swap in new one */ 1513 m = data->m; 1514 m->m_pkthdr.rcvif = ifp; 1515 m->m_data = (caddr_t)(head + 1); 1516 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1517 1518 data->m = mnew; 1519 /* update Rx descriptor */ 1520 ring->desc[ring->cur] = htole32(paddr); 1521 1522 if (bpf_peers_present(ifp->if_bpf)) { 1523 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1524 1525 tap->wr_flags = 0; 1526 tap->wr_chan_freq = 1527 htole16(ic->ic_channels[head->chan].ic_freq); 1528 tap->wr_chan_flags = 1529 htole16(ic->ic_channels[head->chan].ic_flags); 1530 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1531 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1532 tap->wr_tsft = tail->tstamp; 1533 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1534 switch (head->rate) { 1535 /* CCK rates */ 1536 case 10: tap->wr_rate = 2; break; 1537 case 20: tap->wr_rate = 4; break; 1538 case 55: tap->wr_rate = 11; break; 1539 case 110: tap->wr_rate = 22; break; 1540 /* OFDM rates */ 1541 case 0xd: tap->wr_rate = 12; break; 1542 case 0xf: tap->wr_rate = 18; break; 1543 case 0x5: tap->wr_rate = 24; break; 1544 case 0x7: tap->wr_rate = 36; break; 1545 case 0x9: tap->wr_rate = 48; break; 1546 case 0xb: tap->wr_rate = 72; break; 1547 case 0x1: tap->wr_rate = 96; break; 1548 case 0x3: tap->wr_rate = 108; break; 1549 /* unknown rate: should not happen */ 1550 default: tap->wr_rate = 0; 1551 } 1552 if (le16toh(head->flags) & 0x4) 1553 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1554 1555 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m); 1556 } 1557 1558 WPI_UNLOCK(sc); 1559 1560 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1561 if (ni != NULL) { 1562 (void) ieee80211_input(ni, m, stat->rssi, 0, 0); 1563 ieee80211_free_node(ni); 1564 } else 1565 (void) ieee80211_input_all(ic, m, stat->rssi, 0, 0); 1566 1567 WPI_LOCK(sc); 1568 } 1569 1570 static void 1571 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1572 { 1573 struct ifnet *ifp = sc->sc_ifp; 1574 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1575 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1576 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1577 struct wpi_node *wn = (struct wpi_node *)txdata->ni; 1578 1579 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1580 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1581 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1582 le32toh(stat->status))); 1583 1584 /* 1585 * Update rate control statistics for the node. 1586 * XXX we should not count mgmt frames since they're always sent at 1587 * the lowest available bit-rate. 1588 * XXX frames w/o ACK shouldn't be used either 1589 */ 1590 wn->amn.amn_txcnt++; 1591 if (stat->ntries > 0) { 1592 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1593 wn->amn.amn_retrycnt++; 1594 } 1595 1596 /* XXX oerrors should only count errors !maxtries */ 1597 if ((le32toh(stat->status) & 0xff) != 1) 1598 ifp->if_oerrors++; 1599 else 1600 ifp->if_opackets++; 1601 1602 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1603 bus_dmamap_unload(ring->data_dmat, txdata->map); 1604 /* XXX handle M_TXCB? */ 1605 m_freem(txdata->m); 1606 txdata->m = NULL; 1607 ieee80211_free_node(txdata->ni); 1608 txdata->ni = NULL; 1609 1610 ring->queued--; 1611 1612 sc->sc_tx_timer = 0; 1613 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1614 wpi_start_locked(ifp); 1615 } 1616 1617 static void 1618 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1619 { 1620 struct wpi_tx_ring *ring = &sc->cmdq; 1621 struct wpi_tx_data *data; 1622 1623 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1624 "type=%s len=%d\n", desc->qid, desc->idx, 1625 desc->flags, wpi_cmd_str(desc->type), 1626 le32toh(desc->len))); 1627 1628 if ((desc->qid & 7) != 4) 1629 return; /* not a command ack */ 1630 1631 data = &ring->data[desc->idx]; 1632 1633 /* if the command was mapped in a mbuf, free it */ 1634 if (data->m != NULL) { 1635 bus_dmamap_unload(ring->data_dmat, data->map); 1636 m_freem(data->m); 1637 data->m = NULL; 1638 } 1639 1640 sc->flags &= ~WPI_FLAG_BUSY; 1641 wakeup(&ring->cmd[desc->idx]); 1642 } 1643 1644 static void 1645 wpi_notif_intr(struct wpi_softc *sc) 1646 { 1647 struct ifnet *ifp = sc->sc_ifp; 1648 struct ieee80211com *ic = ifp->if_l2com; 1649 struct wpi_rx_desc *desc; 1650 struct wpi_rx_data *data; 1651 uint32_t hw; 1652 1653 hw = le32toh(sc->shared->next); 1654 while (sc->rxq.cur != hw) { 1655 data = &sc->rxq.data[sc->rxq.cur]; 1656 desc = (void *)data->m->m_ext.ext_buf; 1657 1658 DPRINTFN(WPI_DEBUG_NOTIFY, 1659 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1660 desc->qid, 1661 desc->idx, 1662 desc->flags, 1663 desc->type, 1664 le32toh(desc->len))); 1665 1666 if (!(desc->qid & 0x80)) /* reply to a command */ 1667 wpi_cmd_intr(sc, desc); 1668 1669 switch (desc->type) { 1670 case WPI_RX_DONE: 1671 /* a 802.11 frame was received */ 1672 wpi_rx_intr(sc, desc, data); 1673 break; 1674 1675 case WPI_TX_DONE: 1676 /* a 802.11 frame has been transmitted */ 1677 wpi_tx_intr(sc, desc); 1678 break; 1679 1680 case WPI_UC_READY: 1681 { 1682 struct wpi_ucode_info *uc = 1683 (struct wpi_ucode_info *)(desc + 1); 1684 1685 /* the microcontroller is ready */ 1686 DPRINTF(("microcode alive notification version %x " 1687 "alive %x\n", le32toh(uc->version), 1688 le32toh(uc->valid))); 1689 1690 if (le32toh(uc->valid) != 1) { 1691 device_printf(sc->sc_dev, 1692 "microcontroller initialization failed\n"); 1693 wpi_stop_locked(sc); 1694 } 1695 break; 1696 } 1697 case WPI_STATE_CHANGED: 1698 { 1699 uint32_t *status = (uint32_t *)(desc + 1); 1700 1701 /* enabled/disabled notification */ 1702 DPRINTF(("state changed to %x\n", le32toh(*status))); 1703 1704 if (le32toh(*status) & 1) { 1705 device_printf(sc->sc_dev, 1706 "Radio transmitter is switched off\n"); 1707 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1708 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1709 /* Disable firmware commands */ 1710 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1711 } 1712 break; 1713 } 1714 case WPI_START_SCAN: 1715 { 1716 #ifdef WPI_DEBUG 1717 struct wpi_start_scan *scan = 1718 (struct wpi_start_scan *)(desc + 1); 1719 #endif 1720 1721 DPRINTFN(WPI_DEBUG_SCANNING, 1722 ("scanning channel %d status %x\n", 1723 scan->chan, le32toh(scan->status))); 1724 break; 1725 } 1726 case WPI_STOP_SCAN: 1727 { 1728 #ifdef WPI_DEBUG 1729 struct wpi_stop_scan *scan = 1730 (struct wpi_stop_scan *)(desc + 1); 1731 #endif 1732 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1733 1734 DPRINTFN(WPI_DEBUG_SCANNING, 1735 ("scan finished nchan=%d status=%d chan=%d\n", 1736 scan->nchan, scan->status, scan->chan)); 1737 1738 sc->sc_scan_timer = 0; 1739 ieee80211_scan_next(vap); 1740 break; 1741 } 1742 case WPI_MISSED_BEACON: 1743 { 1744 struct wpi_missed_beacon *beacon = 1745 (struct wpi_missed_beacon *)(desc + 1); 1746 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1747 1748 if (le32toh(beacon->consecutive) >= 1749 vap->iv_bmissthreshold) { 1750 DPRINTF(("Beacon miss: %u >= %u\n", 1751 le32toh(beacon->consecutive), 1752 vap->iv_bmissthreshold)); 1753 ieee80211_beacon_miss(ic); 1754 } 1755 break; 1756 } 1757 } 1758 1759 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1760 } 1761 1762 /* tell the firmware what we have processed */ 1763 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1764 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1765 } 1766 1767 static void 1768 wpi_intr(void *arg) 1769 { 1770 struct wpi_softc *sc = arg; 1771 uint32_t r; 1772 1773 WPI_LOCK(sc); 1774 1775 r = WPI_READ(sc, WPI_INTR); 1776 if (r == 0 || r == 0xffffffff) { 1777 WPI_UNLOCK(sc); 1778 return; 1779 } 1780 1781 /* disable interrupts */ 1782 WPI_WRITE(sc, WPI_MASK, 0); 1783 /* ack interrupts */ 1784 WPI_WRITE(sc, WPI_INTR, r); 1785 1786 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1787 struct ifnet *ifp = sc->sc_ifp; 1788 struct ieee80211com *ic = ifp->if_l2com; 1789 1790 device_printf(sc->sc_dev, "fatal firmware error\n"); 1791 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1792 "(Hardware Error)")); 1793 ieee80211_runtask(ic, &sc->sc_restarttask); 1794 sc->flags &= ~WPI_FLAG_BUSY; 1795 WPI_UNLOCK(sc); 1796 return; 1797 } 1798 1799 if (r & WPI_RX_INTR) 1800 wpi_notif_intr(sc); 1801 1802 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1803 wakeup(sc); 1804 1805 /* re-enable interrupts */ 1806 if (sc->sc_ifp->if_flags & IFF_UP) 1807 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1808 1809 WPI_UNLOCK(sc); 1810 } 1811 1812 static uint8_t 1813 wpi_plcp_signal(int rate) 1814 { 1815 switch (rate) { 1816 /* CCK rates (returned values are device-dependent) */ 1817 case 2: return 10; 1818 case 4: return 20; 1819 case 11: return 55; 1820 case 22: return 110; 1821 1822 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1823 /* R1-R4 (ral/ural is R4-R1) */ 1824 case 12: return 0xd; 1825 case 18: return 0xf; 1826 case 24: return 0x5; 1827 case 36: return 0x7; 1828 case 48: return 0x9; 1829 case 72: return 0xb; 1830 case 96: return 0x1; 1831 case 108: return 0x3; 1832 1833 /* unsupported rates (should not get there) */ 1834 default: return 0; 1835 } 1836 } 1837 1838 /* quickly determine if a given rate is CCK or OFDM */ 1839 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1840 1841 /* 1842 * Construct the data packet for a transmit buffer and acutally put 1843 * the buffer onto the transmit ring, kicking the card to process the 1844 * the buffer. 1845 */ 1846 static int 1847 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1848 int ac) 1849 { 1850 struct ieee80211vap *vap = ni->ni_vap; 1851 struct ifnet *ifp = sc->sc_ifp; 1852 struct ieee80211com *ic = ifp->if_l2com; 1853 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1854 struct wpi_tx_ring *ring = &sc->txq[ac]; 1855 struct wpi_tx_desc *desc; 1856 struct wpi_tx_data *data; 1857 struct wpi_tx_cmd *cmd; 1858 struct wpi_cmd_data *tx; 1859 struct ieee80211_frame *wh; 1860 const struct ieee80211_txparam *tp; 1861 struct ieee80211_key *k; 1862 struct mbuf *mnew; 1863 int i, error, nsegs, rate, hdrlen, ismcast; 1864 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1865 1866 desc = &ring->desc[ring->cur]; 1867 data = &ring->data[ring->cur]; 1868 1869 wh = mtod(m0, struct ieee80211_frame *); 1870 1871 hdrlen = ieee80211_hdrsize(wh); 1872 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1873 1874 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1875 k = ieee80211_crypto_encap(ni, m0); 1876 if (k == NULL) { 1877 m_freem(m0); 1878 return ENOBUFS; 1879 } 1880 /* packet header may have moved, reset our local pointer */ 1881 wh = mtod(m0, struct ieee80211_frame *); 1882 } 1883 1884 cmd = &ring->cmd[ring->cur]; 1885 cmd->code = WPI_CMD_TX_DATA; 1886 cmd->flags = 0; 1887 cmd->qid = ring->qid; 1888 cmd->idx = ring->cur; 1889 1890 tx = (struct wpi_cmd_data *)cmd->data; 1891 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1892 tx->timeout = htole16(0); 1893 tx->ofdm_mask = 0xff; 1894 tx->cck_mask = 0x0f; 1895 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1896 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1897 tx->len = htole16(m0->m_pkthdr.len); 1898 1899 if (!ismcast) { 1900 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1901 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1902 tx->flags |= htole32(WPI_TX_NEED_ACK); 1903 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1904 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1905 tx->rts_ntries = 7; 1906 } 1907 } 1908 /* pick a rate */ 1909 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1910 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1911 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1912 /* tell h/w to set timestamp in probe responses */ 1913 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1914 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1915 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1916 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1917 tx->timeout = htole16(3); 1918 else 1919 tx->timeout = htole16(2); 1920 rate = tp->mgmtrate; 1921 } else if (ismcast) { 1922 rate = tp->mcastrate; 1923 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1924 rate = tp->ucastrate; 1925 } else { 1926 (void) ieee80211_amrr_choose(ni, &WPI_NODE(ni)->amn); 1927 rate = ni->ni_txrate; 1928 } 1929 tx->rate = wpi_plcp_signal(rate); 1930 1931 /* be very persistant at sending frames out */ 1932 #if 0 1933 tx->data_ntries = tp->maxretry; 1934 #else 1935 tx->data_ntries = 15; /* XXX way too high */ 1936 #endif 1937 1938 if (bpf_peers_present(ifp->if_bpf)) { 1939 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1940 tap->wt_flags = 0; 1941 tap->wt_chan_freq = htole16(ni->ni_chan->ic_freq); 1942 tap->wt_chan_flags = htole16(ni->ni_chan->ic_flags); 1943 tap->wt_rate = rate; 1944 tap->wt_hwqueue = ac; 1945 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1946 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1947 1948 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1949 } 1950 1951 /* save and trim IEEE802.11 header */ 1952 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1953 m_adj(m0, hdrlen); 1954 1955 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 1956 &nsegs, BUS_DMA_NOWAIT); 1957 if (error != 0 && error != EFBIG) { 1958 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1959 error); 1960 m_freem(m0); 1961 return error; 1962 } 1963 if (error != 0) { 1964 /* XXX use m_collapse */ 1965 mnew = m_defrag(m0, M_DONTWAIT); 1966 if (mnew == NULL) { 1967 device_printf(sc->sc_dev, 1968 "could not defragment mbuf\n"); 1969 m_freem(m0); 1970 return ENOBUFS; 1971 } 1972 m0 = mnew; 1973 1974 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 1975 m0, segs, &nsegs, BUS_DMA_NOWAIT); 1976 if (error != 0) { 1977 device_printf(sc->sc_dev, 1978 "could not map mbuf (error %d)\n", error); 1979 m_freem(m0); 1980 return error; 1981 } 1982 } 1983 1984 data->m = m0; 1985 data->ni = ni; 1986 1987 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1988 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 1989 1990 /* first scatter/gather segment is used by the tx data command */ 1991 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1992 (1 + nsegs) << 24); 1993 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1994 ring->cur * sizeof (struct wpi_tx_cmd)); 1995 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1996 for (i = 1; i <= nsegs; i++) { 1997 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 1998 desc->segs[i].len = htole32(segs[i - 1].ds_len); 1999 } 2000 2001 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2002 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2003 BUS_DMASYNC_PREWRITE); 2004 2005 ring->queued++; 2006 2007 /* kick ring */ 2008 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2009 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2010 2011 return 0; 2012 } 2013 2014 /** 2015 * Process data waiting to be sent on the IFNET output queue 2016 */ 2017 static void 2018 wpi_start(struct ifnet *ifp) 2019 { 2020 struct wpi_softc *sc = ifp->if_softc; 2021 2022 WPI_LOCK(sc); 2023 wpi_start_locked(ifp); 2024 WPI_UNLOCK(sc); 2025 } 2026 2027 static void 2028 wpi_start_locked(struct ifnet *ifp) 2029 { 2030 struct wpi_softc *sc = ifp->if_softc; 2031 struct ieee80211_node *ni; 2032 struct mbuf *m; 2033 int ac; 2034 2035 WPI_LOCK_ASSERT(sc); 2036 2037 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2038 return; 2039 2040 for (;;) { 2041 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2042 if (m == NULL) 2043 break; 2044 ac = M_WME_GETAC(m); 2045 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2046 /* there is no place left in this ring */ 2047 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2048 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2049 break; 2050 } 2051 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2052 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2053 ieee80211_free_node(ni); 2054 ifp->if_oerrors++; 2055 break; 2056 } 2057 sc->sc_tx_timer = 5; 2058 } 2059 } 2060 2061 static int 2062 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2063 const struct ieee80211_bpf_params *params) 2064 { 2065 struct ieee80211com *ic = ni->ni_ic; 2066 struct ifnet *ifp = ic->ic_ifp; 2067 struct wpi_softc *sc = ifp->if_softc; 2068 2069 /* prevent management frames from being sent if we're not ready */ 2070 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2071 m_freem(m); 2072 ieee80211_free_node(ni); 2073 return ENETDOWN; 2074 } 2075 WPI_LOCK(sc); 2076 2077 /* management frames go into ring 0 */ 2078 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2079 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2080 m_freem(m); 2081 WPI_UNLOCK(sc); 2082 ieee80211_free_node(ni); 2083 return ENOBUFS; /* XXX */ 2084 } 2085 2086 ifp->if_opackets++; 2087 if (wpi_tx_data(sc, m, ni, 0) != 0) 2088 goto bad; 2089 sc->sc_tx_timer = 5; 2090 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2091 2092 WPI_UNLOCK(sc); 2093 return 0; 2094 bad: 2095 ifp->if_oerrors++; 2096 WPI_UNLOCK(sc); 2097 ieee80211_free_node(ni); 2098 return EIO; /* XXX */ 2099 } 2100 2101 static int 2102 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2103 { 2104 struct wpi_softc *sc = ifp->if_softc; 2105 struct ieee80211com *ic = ifp->if_l2com; 2106 struct ifreq *ifr = (struct ifreq *) data; 2107 int error = 0, startall = 0; 2108 2109 switch (cmd) { 2110 case SIOCSIFFLAGS: 2111 WPI_LOCK(sc); 2112 if ((ifp->if_flags & IFF_UP)) { 2113 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2114 wpi_init_locked(sc, 0); 2115 startall = 1; 2116 } 2117 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2118 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2119 wpi_stop_locked(sc); 2120 WPI_UNLOCK(sc); 2121 if (startall) 2122 ieee80211_start_all(ic); 2123 break; 2124 case SIOCGIFMEDIA: 2125 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2126 break; 2127 case SIOCGIFADDR: 2128 error = ether_ioctl(ifp, cmd, data); 2129 break; 2130 default: 2131 error = EINVAL; 2132 break; 2133 } 2134 return error; 2135 } 2136 2137 /* 2138 * Extract various information from EEPROM. 2139 */ 2140 static void 2141 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2142 { 2143 int i; 2144 2145 /* read the hardware capabilities, revision and SKU type */ 2146 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2147 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2148 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2149 2150 /* read the regulatory domain */ 2151 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2152 2153 /* read in the hw MAC address */ 2154 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2155 2156 /* read the list of authorized channels */ 2157 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2158 wpi_read_eeprom_channels(sc,i); 2159 2160 /* read the power level calibration info for each group */ 2161 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2162 wpi_read_eeprom_group(sc,i); 2163 } 2164 2165 /* 2166 * Send a command to the firmware. 2167 */ 2168 static int 2169 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2170 { 2171 struct wpi_tx_ring *ring = &sc->cmdq; 2172 struct wpi_tx_desc *desc; 2173 struct wpi_tx_cmd *cmd; 2174 2175 #ifdef WPI_DEBUG 2176 if (!async) { 2177 WPI_LOCK_ASSERT(sc); 2178 } 2179 #endif 2180 2181 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2182 async)); 2183 2184 if (sc->flags & WPI_FLAG_BUSY) { 2185 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2186 __func__, code); 2187 return EAGAIN; 2188 } 2189 sc->flags|= WPI_FLAG_BUSY; 2190 2191 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2192 code, size)); 2193 2194 desc = &ring->desc[ring->cur]; 2195 cmd = &ring->cmd[ring->cur]; 2196 2197 cmd->code = code; 2198 cmd->flags = 0; 2199 cmd->qid = ring->qid; 2200 cmd->idx = ring->cur; 2201 memcpy(cmd->data, buf, size); 2202 2203 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2204 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2205 ring->cur * sizeof (struct wpi_tx_cmd)); 2206 desc->segs[0].len = htole32(4 + size); 2207 2208 /* kick cmd ring */ 2209 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2210 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2211 2212 if (async) { 2213 sc->flags &= ~ WPI_FLAG_BUSY; 2214 return 0; 2215 } 2216 2217 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2218 } 2219 2220 static int 2221 wpi_wme_update(struct ieee80211com *ic) 2222 { 2223 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2224 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2225 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2226 const struct wmeParams *wmep; 2227 struct wpi_wme_setup wme; 2228 int ac; 2229 2230 /* don't override default WME values if WME is not actually enabled */ 2231 if (!(ic->ic_flags & IEEE80211_F_WME)) 2232 return 0; 2233 2234 wme.flags = 0; 2235 for (ac = 0; ac < WME_NUM_AC; ac++) { 2236 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2237 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2238 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2239 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2240 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2241 2242 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2243 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2244 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2245 } 2246 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2247 #undef WPI_USEC 2248 #undef WPI_EXP2 2249 } 2250 2251 /* 2252 * Configure h/w multi-rate retries. 2253 */ 2254 static int 2255 wpi_mrr_setup(struct wpi_softc *sc) 2256 { 2257 struct ifnet *ifp = sc->sc_ifp; 2258 struct ieee80211com *ic = ifp->if_l2com; 2259 struct wpi_mrr_setup mrr; 2260 int i, error; 2261 2262 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2263 2264 /* CCK rates (not used with 802.11a) */ 2265 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2266 mrr.rates[i].flags = 0; 2267 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2268 /* fallback to the immediate lower CCK rate (if any) */ 2269 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2270 /* try one time at this rate before falling back to "next" */ 2271 mrr.rates[i].ntries = 1; 2272 } 2273 2274 /* OFDM rates (not used with 802.11b) */ 2275 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2276 mrr.rates[i].flags = 0; 2277 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2278 /* fallback to the immediate lower OFDM rate (if any) */ 2279 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2280 mrr.rates[i].next = (i == WPI_OFDM6) ? 2281 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2282 WPI_OFDM6 : WPI_CCK2) : 2283 i - 1; 2284 /* try one time at this rate before falling back to "next" */ 2285 mrr.rates[i].ntries = 1; 2286 } 2287 2288 /* setup MRR for control frames */ 2289 mrr.which = htole32(WPI_MRR_CTL); 2290 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2291 if (error != 0) { 2292 device_printf(sc->sc_dev, 2293 "could not setup MRR for control frames\n"); 2294 return error; 2295 } 2296 2297 /* setup MRR for data frames */ 2298 mrr.which = htole32(WPI_MRR_DATA); 2299 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2300 if (error != 0) { 2301 device_printf(sc->sc_dev, 2302 "could not setup MRR for data frames\n"); 2303 return error; 2304 } 2305 2306 return 0; 2307 } 2308 2309 static void 2310 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2311 { 2312 struct wpi_cmd_led led; 2313 2314 led.which = which; 2315 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2316 led.off = off; 2317 led.on = on; 2318 2319 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2320 } 2321 2322 static void 2323 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2324 { 2325 struct wpi_cmd_tsf tsf; 2326 uint64_t val, mod; 2327 2328 memset(&tsf, 0, sizeof tsf); 2329 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2330 tsf.bintval = htole16(ni->ni_intval); 2331 tsf.lintval = htole16(10); 2332 2333 /* compute remaining time until next beacon */ 2334 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2335 mod = le64toh(tsf.tstamp) % val; 2336 tsf.binitval = htole32((uint32_t)(val - mod)); 2337 2338 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2339 device_printf(sc->sc_dev, "could not enable TSF\n"); 2340 } 2341 2342 #if 0 2343 /* 2344 * Build a beacon frame that the firmware will broadcast periodically in 2345 * IBSS or HostAP modes. 2346 */ 2347 static int 2348 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2349 { 2350 struct ifnet *ifp = sc->sc_ifp; 2351 struct ieee80211com *ic = ifp->if_l2com; 2352 struct wpi_tx_ring *ring = &sc->cmdq; 2353 struct wpi_tx_desc *desc; 2354 struct wpi_tx_data *data; 2355 struct wpi_tx_cmd *cmd; 2356 struct wpi_cmd_beacon *bcn; 2357 struct ieee80211_beacon_offsets bo; 2358 struct mbuf *m0; 2359 bus_addr_t physaddr; 2360 int error; 2361 2362 desc = &ring->desc[ring->cur]; 2363 data = &ring->data[ring->cur]; 2364 2365 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2366 if (m0 == NULL) { 2367 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2368 return ENOMEM; 2369 } 2370 2371 cmd = &ring->cmd[ring->cur]; 2372 cmd->code = WPI_CMD_SET_BEACON; 2373 cmd->flags = 0; 2374 cmd->qid = ring->qid; 2375 cmd->idx = ring->cur; 2376 2377 bcn = (struct wpi_cmd_beacon *)cmd->data; 2378 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2379 bcn->id = WPI_ID_BROADCAST; 2380 bcn->ofdm_mask = 0xff; 2381 bcn->cck_mask = 0x0f; 2382 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2383 bcn->len = htole16(m0->m_pkthdr.len); 2384 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2385 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2386 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2387 2388 /* save and trim IEEE802.11 header */ 2389 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2390 m_adj(m0, sizeof (struct ieee80211_frame)); 2391 2392 /* assume beacon frame is contiguous */ 2393 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2394 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2395 if (error != 0) { 2396 device_printf(sc->sc_dev, "could not map beacon\n"); 2397 m_freem(m0); 2398 return error; 2399 } 2400 2401 data->m = m0; 2402 2403 /* first scatter/gather segment is used by the beacon command */ 2404 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2405 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2406 ring->cur * sizeof (struct wpi_tx_cmd)); 2407 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2408 desc->segs[1].addr = htole32(physaddr); 2409 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2410 2411 /* kick cmd ring */ 2412 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2413 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2414 2415 return 0; 2416 } 2417 #endif 2418 2419 static int 2420 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2421 { 2422 struct ieee80211com *ic = vap->iv_ic; 2423 struct ieee80211_node *ni = vap->iv_bss; 2424 struct wpi_node_info node; 2425 int error; 2426 2427 2428 /* update adapter's configuration */ 2429 sc->config.associd = 0; 2430 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2431 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2432 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2433 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2434 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2435 WPI_CONFIG_24GHZ); 2436 } 2437 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2438 sc->config.cck_mask = 0; 2439 sc->config.ofdm_mask = 0x15; 2440 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2441 sc->config.cck_mask = 0x03; 2442 sc->config.ofdm_mask = 0; 2443 } else { 2444 /* XXX assume 802.11b/g */ 2445 sc->config.cck_mask = 0x0f; 2446 sc->config.ofdm_mask = 0x15; 2447 } 2448 2449 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2450 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2451 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2452 sizeof (struct wpi_config), 1); 2453 if (error != 0) { 2454 device_printf(sc->sc_dev, "could not configure\n"); 2455 return error; 2456 } 2457 2458 /* configuration has changed, set Tx power accordingly */ 2459 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2460 device_printf(sc->sc_dev, "could not set Tx power\n"); 2461 return error; 2462 } 2463 2464 /* add default node */ 2465 memset(&node, 0, sizeof node); 2466 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2467 node.id = WPI_ID_BSS; 2468 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2469 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2470 node.action = htole32(WPI_ACTION_SET_RATE); 2471 node.antenna = WPI_ANTENNA_BOTH; 2472 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2473 if (error != 0) 2474 device_printf(sc->sc_dev, "could not add BSS node\n"); 2475 2476 return (error); 2477 } 2478 2479 static int 2480 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2481 { 2482 struct ieee80211com *ic = vap->iv_ic; 2483 struct ieee80211_node *ni = vap->iv_bss; 2484 int error; 2485 2486 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2487 /* link LED blinks while monitoring */ 2488 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2489 return 0; 2490 } 2491 2492 wpi_enable_tsf(sc, ni); 2493 2494 /* update adapter's configuration */ 2495 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2496 /* short preamble/slot time are negotiated when associating */ 2497 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2498 WPI_CONFIG_SHSLOT); 2499 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2500 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2501 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2502 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2503 sc->config.filter |= htole32(WPI_FILTER_BSS); 2504 2505 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2506 2507 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2508 sc->config.flags)); 2509 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2510 wpi_config), 1); 2511 if (error != 0) { 2512 device_printf(sc->sc_dev, "could not update configuration\n"); 2513 return error; 2514 } 2515 2516 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2517 if (error != 0) { 2518 device_printf(sc->sc_dev, "could set txpower\n"); 2519 return error; 2520 } 2521 2522 /* link LED always on while associated */ 2523 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2524 2525 /* start automatic rate control timer */ 2526 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2527 2528 return (error); 2529 } 2530 2531 /* 2532 * Send a scan request to the firmware. Since this command is huge, we map it 2533 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2534 * much of this code is similar to that in wpi_cmd but because we must manually 2535 * construct the probe & channels, we duplicate what's needed here. XXX In the 2536 * future, this function should be modified to use wpi_cmd to help cleanup the 2537 * code base. 2538 */ 2539 static int 2540 wpi_scan(struct wpi_softc *sc) 2541 { 2542 struct ifnet *ifp = sc->sc_ifp; 2543 struct ieee80211com *ic = ifp->if_l2com; 2544 struct ieee80211_scan_state *ss = ic->ic_scan; 2545 struct wpi_tx_ring *ring = &sc->cmdq; 2546 struct wpi_tx_desc *desc; 2547 struct wpi_tx_data *data; 2548 struct wpi_tx_cmd *cmd; 2549 struct wpi_scan_hdr *hdr; 2550 struct wpi_scan_chan *chan; 2551 struct ieee80211_frame *wh; 2552 struct ieee80211_rateset *rs; 2553 struct ieee80211_channel *c; 2554 enum ieee80211_phymode mode; 2555 uint8_t *frm; 2556 int nrates, pktlen, error, i, nssid; 2557 bus_addr_t physaddr; 2558 2559 desc = &ring->desc[ring->cur]; 2560 data = &ring->data[ring->cur]; 2561 2562 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2563 if (data->m == NULL) { 2564 device_printf(sc->sc_dev, 2565 "could not allocate mbuf for scan command\n"); 2566 return ENOMEM; 2567 } 2568 2569 cmd = mtod(data->m, struct wpi_tx_cmd *); 2570 cmd->code = WPI_CMD_SCAN; 2571 cmd->flags = 0; 2572 cmd->qid = ring->qid; 2573 cmd->idx = ring->cur; 2574 2575 hdr = (struct wpi_scan_hdr *)cmd->data; 2576 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2577 2578 /* 2579 * Move to the next channel if no packets are received within 5 msecs 2580 * after sending the probe request (this helps to reduce the duration 2581 * of active scans). 2582 */ 2583 hdr->quiet = htole16(5); 2584 hdr->threshold = htole16(1); 2585 2586 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2587 /* send probe requests at 6Mbps */ 2588 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2589 2590 /* Enable crc checking */ 2591 hdr->promotion = htole16(1); 2592 } else { 2593 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2594 /* send probe requests at 1Mbps */ 2595 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2596 } 2597 hdr->tx.id = WPI_ID_BROADCAST; 2598 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2599 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2600 2601 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2602 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2603 for (i = 0; i < nssid; i++) { 2604 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2605 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2606 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2607 hdr->scan_essids[i].esslen); 2608 #ifdef WPI_DEBUG 2609 if (wpi_debug & WPI_DEBUG_SCANNING) { 2610 printf("Scanning Essid: "); 2611 ieee80211_print_essid(hdr->scan_essids[i].essid, 2612 hdr->scan_essids[i].esslen); 2613 printf("\n"); 2614 } 2615 #endif 2616 } 2617 2618 /* 2619 * Build a probe request frame. Most of the following code is a 2620 * copy & paste of what is done in net80211. 2621 */ 2622 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2623 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2624 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2625 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2626 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2627 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2628 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2629 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2630 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2631 2632 frm = (uint8_t *)(wh + 1); 2633 2634 /* add essid IE, the hardware will fill this in for us */ 2635 *frm++ = IEEE80211_ELEMID_SSID; 2636 *frm++ = 0; 2637 2638 mode = ieee80211_chan2mode(ic->ic_curchan); 2639 rs = &ic->ic_sup_rates[mode]; 2640 2641 /* add supported rates IE */ 2642 *frm++ = IEEE80211_ELEMID_RATES; 2643 nrates = rs->rs_nrates; 2644 if (nrates > IEEE80211_RATE_SIZE) 2645 nrates = IEEE80211_RATE_SIZE; 2646 *frm++ = nrates; 2647 memcpy(frm, rs->rs_rates, nrates); 2648 frm += nrates; 2649 2650 /* add supported xrates IE */ 2651 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2652 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2653 *frm++ = IEEE80211_ELEMID_XRATES; 2654 *frm++ = nrates; 2655 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2656 frm += nrates; 2657 } 2658 2659 /* setup length of probe request */ 2660 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2661 2662 /* 2663 * Construct information about the channel that we 2664 * want to scan. The firmware expects this to be directly 2665 * after the scan probe request 2666 */ 2667 c = ic->ic_curchan; 2668 chan = (struct wpi_scan_chan *)frm; 2669 chan->chan = ieee80211_chan2ieee(ic, c); 2670 chan->flags = 0; 2671 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2672 chan->flags |= WPI_CHAN_ACTIVE; 2673 if (nssid != 0) 2674 chan->flags |= WPI_CHAN_DIRECT; 2675 } 2676 chan->gain_dsp = 0x6e; /* Default level */ 2677 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2678 chan->active = htole16(10); 2679 chan->passive = htole16(ss->ss_maxdwell); 2680 chan->gain_radio = 0x3b; 2681 } else { 2682 chan->active = htole16(20); 2683 chan->passive = htole16(ss->ss_maxdwell); 2684 chan->gain_radio = 0x28; 2685 } 2686 2687 DPRINTFN(WPI_DEBUG_SCANNING, 2688 ("Scanning %u Passive: %d\n", 2689 chan->chan, 2690 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2691 2692 hdr->nchan++; 2693 chan++; 2694 2695 frm += sizeof (struct wpi_scan_chan); 2696 #if 0 2697 // XXX All Channels.... 2698 for (c = &ic->ic_channels[1]; 2699 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2700 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2701 continue; 2702 2703 chan->chan = ieee80211_chan2ieee(ic, c); 2704 chan->flags = 0; 2705 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2706 chan->flags |= WPI_CHAN_ACTIVE; 2707 if (ic->ic_des_ssid[0].len != 0) 2708 chan->flags |= WPI_CHAN_DIRECT; 2709 } 2710 chan->gain_dsp = 0x6e; /* Default level */ 2711 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2712 chan->active = htole16(10); 2713 chan->passive = htole16(110); 2714 chan->gain_radio = 0x3b; 2715 } else { 2716 chan->active = htole16(20); 2717 chan->passive = htole16(120); 2718 chan->gain_radio = 0x28; 2719 } 2720 2721 DPRINTFN(WPI_DEBUG_SCANNING, 2722 ("Scanning %u Passive: %d\n", 2723 chan->chan, 2724 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2725 2726 hdr->nchan++; 2727 chan++; 2728 2729 frm += sizeof (struct wpi_scan_chan); 2730 } 2731 #endif 2732 2733 hdr->len = htole16(frm - (uint8_t *)hdr); 2734 pktlen = frm - (uint8_t *)cmd; 2735 2736 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2737 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2738 if (error != 0) { 2739 device_printf(sc->sc_dev, "could not map scan command\n"); 2740 m_freem(data->m); 2741 data->m = NULL; 2742 return error; 2743 } 2744 2745 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2746 desc->segs[0].addr = htole32(physaddr); 2747 desc->segs[0].len = htole32(pktlen); 2748 2749 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2750 BUS_DMASYNC_PREWRITE); 2751 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2752 2753 /* kick cmd ring */ 2754 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2755 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2756 2757 sc->sc_scan_timer = 5; 2758 return 0; /* will be notified async. of failure/success */ 2759 } 2760 2761 /** 2762 * Configure the card to listen to a particular channel, this transisions the 2763 * card in to being able to receive frames from remote devices. 2764 */ 2765 static int 2766 wpi_config(struct wpi_softc *sc) 2767 { 2768 struct ifnet *ifp = sc->sc_ifp; 2769 struct ieee80211com *ic = ifp->if_l2com; 2770 struct wpi_power power; 2771 struct wpi_bluetooth bluetooth; 2772 struct wpi_node_info node; 2773 int error; 2774 2775 /* set power mode */ 2776 memset(&power, 0, sizeof power); 2777 power.flags = htole32(WPI_POWER_CAM|0x8); 2778 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2779 if (error != 0) { 2780 device_printf(sc->sc_dev, "could not set power mode\n"); 2781 return error; 2782 } 2783 2784 /* configure bluetooth coexistence */ 2785 memset(&bluetooth, 0, sizeof bluetooth); 2786 bluetooth.flags = 3; 2787 bluetooth.lead = 0xaa; 2788 bluetooth.kill = 1; 2789 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2790 0); 2791 if (error != 0) { 2792 device_printf(sc->sc_dev, 2793 "could not configure bluetooth coexistence\n"); 2794 return error; 2795 } 2796 2797 /* configure adapter */ 2798 memset(&sc->config, 0, sizeof (struct wpi_config)); 2799 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2800 /*set default channel*/ 2801 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2802 sc->config.flags = htole32(WPI_CONFIG_TSF); 2803 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2804 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2805 WPI_CONFIG_24GHZ); 2806 } 2807 sc->config.filter = 0; 2808 switch (ic->ic_opmode) { 2809 case IEEE80211_M_STA: 2810 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2811 sc->config.mode = WPI_MODE_STA; 2812 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2813 break; 2814 case IEEE80211_M_IBSS: 2815 case IEEE80211_M_AHDEMO: 2816 sc->config.mode = WPI_MODE_IBSS; 2817 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2818 WPI_FILTER_MULTICAST); 2819 break; 2820 case IEEE80211_M_HOSTAP: 2821 sc->config.mode = WPI_MODE_HOSTAP; 2822 break; 2823 case IEEE80211_M_MONITOR: 2824 sc->config.mode = WPI_MODE_MONITOR; 2825 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2826 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2827 break; 2828 } 2829 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2830 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2831 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2832 sizeof (struct wpi_config), 0); 2833 if (error != 0) { 2834 device_printf(sc->sc_dev, "configure command failed\n"); 2835 return error; 2836 } 2837 2838 /* configuration has changed, set Tx power accordingly */ 2839 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2840 device_printf(sc->sc_dev, "could not set Tx power\n"); 2841 return error; 2842 } 2843 2844 /* add broadcast node */ 2845 memset(&node, 0, sizeof node); 2846 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2847 node.id = WPI_ID_BROADCAST; 2848 node.rate = wpi_plcp_signal(2); 2849 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2850 if (error != 0) { 2851 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2852 return error; 2853 } 2854 2855 /* Setup rate scalling */ 2856 error = wpi_mrr_setup(sc); 2857 if (error != 0) { 2858 device_printf(sc->sc_dev, "could not setup MRR\n"); 2859 return error; 2860 } 2861 2862 return 0; 2863 } 2864 2865 static void 2866 wpi_stop_master(struct wpi_softc *sc) 2867 { 2868 uint32_t tmp; 2869 int ntries; 2870 2871 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2872 2873 tmp = WPI_READ(sc, WPI_RESET); 2874 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2875 2876 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2877 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2878 return; /* already asleep */ 2879 2880 for (ntries = 0; ntries < 100; ntries++) { 2881 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2882 break; 2883 DELAY(10); 2884 } 2885 if (ntries == 100) { 2886 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2887 } 2888 } 2889 2890 static int 2891 wpi_power_up(struct wpi_softc *sc) 2892 { 2893 uint32_t tmp; 2894 int ntries; 2895 2896 wpi_mem_lock(sc); 2897 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2898 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2899 wpi_mem_unlock(sc); 2900 2901 for (ntries = 0; ntries < 5000; ntries++) { 2902 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2903 break; 2904 DELAY(10); 2905 } 2906 if (ntries == 5000) { 2907 device_printf(sc->sc_dev, 2908 "timeout waiting for NIC to power up\n"); 2909 return ETIMEDOUT; 2910 } 2911 return 0; 2912 } 2913 2914 static int 2915 wpi_reset(struct wpi_softc *sc) 2916 { 2917 uint32_t tmp; 2918 int ntries; 2919 2920 DPRINTFN(WPI_DEBUG_HW, 2921 ("Resetting the card - clearing any uploaded firmware\n")); 2922 2923 /* clear any pending interrupts */ 2924 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2925 2926 tmp = WPI_READ(sc, WPI_PLL_CTL); 2927 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2928 2929 tmp = WPI_READ(sc, WPI_CHICKEN); 2930 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2931 2932 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2933 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2934 2935 /* wait for clock stabilization */ 2936 for (ntries = 0; ntries < 25000; ntries++) { 2937 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2938 break; 2939 DELAY(10); 2940 } 2941 if (ntries == 25000) { 2942 device_printf(sc->sc_dev, 2943 "timeout waiting for clock stabilization\n"); 2944 return ETIMEDOUT; 2945 } 2946 2947 /* initialize EEPROM */ 2948 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2949 2950 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2951 device_printf(sc->sc_dev, "EEPROM not found\n"); 2952 return EIO; 2953 } 2954 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2955 2956 return 0; 2957 } 2958 2959 static void 2960 wpi_hw_config(struct wpi_softc *sc) 2961 { 2962 uint32_t rev, hw; 2963 2964 /* voodoo from the Linux "driver".. */ 2965 hw = WPI_READ(sc, WPI_HWCONFIG); 2966 2967 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2968 if ((rev & 0xc0) == 0x40) 2969 hw |= WPI_HW_ALM_MB; 2970 else if (!(rev & 0x80)) 2971 hw |= WPI_HW_ALM_MM; 2972 2973 if (sc->cap == 0x80) 2974 hw |= WPI_HW_SKU_MRC; 2975 2976 hw &= ~WPI_HW_REV_D; 2977 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2978 hw |= WPI_HW_REV_D; 2979 2980 if (sc->type > 1) 2981 hw |= WPI_HW_TYPE_B; 2982 2983 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2984 } 2985 2986 static void 2987 wpi_rfkill_resume(struct wpi_softc *sc) 2988 { 2989 struct ifnet *ifp = sc->sc_ifp; 2990 struct ieee80211com *ic = ifp->if_l2com; 2991 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2992 int ntries; 2993 2994 /* enable firmware again */ 2995 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 2996 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 2997 2998 /* wait for thermal sensors to calibrate */ 2999 for (ntries = 0; ntries < 1000; ntries++) { 3000 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3001 break; 3002 DELAY(10); 3003 } 3004 3005 if (ntries == 1000) { 3006 device_printf(sc->sc_dev, 3007 "timeout waiting for thermal calibration\n"); 3008 WPI_UNLOCK(sc); 3009 return; 3010 } 3011 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3012 3013 if (wpi_config(sc) != 0) { 3014 device_printf(sc->sc_dev, "device config failed\n"); 3015 WPI_UNLOCK(sc); 3016 return; 3017 } 3018 3019 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3020 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3021 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3022 3023 if (vap != NULL) { 3024 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3025 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3026 ieee80211_beacon_miss(ic); 3027 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3028 } else 3029 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3030 } else { 3031 ieee80211_scan_next(vap); 3032 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3033 } 3034 } 3035 3036 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3037 } 3038 3039 static void 3040 wpi_init_locked(struct wpi_softc *sc, int force) 3041 { 3042 struct ifnet *ifp = sc->sc_ifp; 3043 uint32_t tmp; 3044 int ntries, qid; 3045 3046 wpi_stop_locked(sc); 3047 (void)wpi_reset(sc); 3048 3049 wpi_mem_lock(sc); 3050 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3051 DELAY(20); 3052 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3053 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3054 wpi_mem_unlock(sc); 3055 3056 (void)wpi_power_up(sc); 3057 wpi_hw_config(sc); 3058 3059 /* init Rx ring */ 3060 wpi_mem_lock(sc); 3061 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3062 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3063 offsetof(struct wpi_shared, next)); 3064 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3065 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3066 wpi_mem_unlock(sc); 3067 3068 /* init Tx rings */ 3069 wpi_mem_lock(sc); 3070 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3071 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3072 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3073 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3074 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3075 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3076 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3077 3078 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3079 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3080 3081 for (qid = 0; qid < 6; qid++) { 3082 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3083 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3084 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3085 } 3086 wpi_mem_unlock(sc); 3087 3088 /* clear "radio off" and "disable command" bits (reversed logic) */ 3089 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3090 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3091 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3092 3093 /* clear any pending interrupts */ 3094 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3095 3096 /* enable interrupts */ 3097 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3098 3099 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3100 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3101 3102 if ((wpi_load_firmware(sc)) != 0) { 3103 device_printf(sc->sc_dev, 3104 "A problem occurred loading the firmware to the driver\n"); 3105 return; 3106 } 3107 3108 /* At this point the firmware is up and running. If the hardware 3109 * RF switch is turned off thermal calibration will fail, though 3110 * the card is still happy to continue to accept commands, catch 3111 * this case and schedule a task to watch for it to be turned on. 3112 */ 3113 wpi_mem_lock(sc); 3114 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3115 wpi_mem_unlock(sc); 3116 3117 if (!(tmp & 0x1)) { 3118 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3119 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3120 goto out; 3121 } 3122 3123 /* wait for thermal sensors to calibrate */ 3124 for (ntries = 0; ntries < 1000; ntries++) { 3125 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3126 break; 3127 DELAY(10); 3128 } 3129 3130 if (ntries == 1000) { 3131 device_printf(sc->sc_dev, 3132 "timeout waiting for thermal sensors calibration\n"); 3133 return; 3134 } 3135 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3136 3137 if (wpi_config(sc) != 0) { 3138 device_printf(sc->sc_dev, "device config failed\n"); 3139 return; 3140 } 3141 3142 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3143 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3144 out: 3145 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3146 } 3147 3148 static void 3149 wpi_init(void *arg) 3150 { 3151 struct wpi_softc *sc = arg; 3152 struct ifnet *ifp = sc->sc_ifp; 3153 struct ieee80211com *ic = ifp->if_l2com; 3154 3155 WPI_LOCK(sc); 3156 wpi_init_locked(sc, 0); 3157 WPI_UNLOCK(sc); 3158 3159 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3160 ieee80211_start_all(ic); /* start all vaps */ 3161 } 3162 3163 static void 3164 wpi_stop_locked(struct wpi_softc *sc) 3165 { 3166 struct ifnet *ifp = sc->sc_ifp; 3167 uint32_t tmp; 3168 int ac; 3169 3170 sc->sc_tx_timer = 0; 3171 sc->sc_scan_timer = 0; 3172 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3173 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3174 callout_stop(&sc->watchdog_to); 3175 callout_stop(&sc->calib_to); 3176 3177 3178 /* disable interrupts */ 3179 WPI_WRITE(sc, WPI_MASK, 0); 3180 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3181 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3182 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3183 3184 wpi_mem_lock(sc); 3185 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3186 wpi_mem_unlock(sc); 3187 3188 /* reset all Tx rings */ 3189 for (ac = 0; ac < 4; ac++) 3190 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3191 wpi_reset_tx_ring(sc, &sc->cmdq); 3192 3193 /* reset Rx ring */ 3194 wpi_reset_rx_ring(sc, &sc->rxq); 3195 3196 wpi_mem_lock(sc); 3197 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3198 wpi_mem_unlock(sc); 3199 3200 DELAY(5); 3201 3202 wpi_stop_master(sc); 3203 3204 tmp = WPI_READ(sc, WPI_RESET); 3205 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3206 sc->flags &= ~WPI_FLAG_BUSY; 3207 } 3208 3209 static void 3210 wpi_stop(struct wpi_softc *sc) 3211 { 3212 WPI_LOCK(sc); 3213 wpi_stop_locked(sc); 3214 WPI_UNLOCK(sc); 3215 } 3216 3217 static void 3218 wpi_newassoc(struct ieee80211_node *ni, int isnew) 3219 { 3220 struct ieee80211vap *vap = ni->ni_vap; 3221 struct wpi_vap *wvp = WPI_VAP(vap); 3222 3223 ieee80211_amrr_node_init(&wvp->amrr, &WPI_NODE(ni)->amn, ni); 3224 } 3225 3226 static void 3227 wpi_calib_timeout(void *arg) 3228 { 3229 struct wpi_softc *sc = arg; 3230 struct ifnet *ifp = sc->sc_ifp; 3231 struct ieee80211com *ic = ifp->if_l2com; 3232 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3233 int temp; 3234 3235 if (vap->iv_state != IEEE80211_S_RUN) 3236 return; 3237 3238 /* update sensor data */ 3239 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3240 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3241 3242 wpi_power_calibration(sc, temp); 3243 3244 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3245 } 3246 3247 /* 3248 * This function is called periodically (every 60 seconds) to adjust output 3249 * power to temperature changes. 3250 */ 3251 static void 3252 wpi_power_calibration(struct wpi_softc *sc, int temp) 3253 { 3254 struct ifnet *ifp = sc->sc_ifp; 3255 struct ieee80211com *ic = ifp->if_l2com; 3256 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3257 3258 /* sanity-check read value */ 3259 if (temp < -260 || temp > 25) { 3260 /* this can't be correct, ignore */ 3261 DPRINTFN(WPI_DEBUG_TEMP, 3262 ("out-of-range temperature reported: %d\n", temp)); 3263 return; 3264 } 3265 3266 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3267 3268 /* adjust Tx power if need be */ 3269 if (abs(temp - sc->temp) <= 6) 3270 return; 3271 3272 sc->temp = temp; 3273 3274 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3275 /* just warn, too bad for the automatic calibration... */ 3276 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3277 } 3278 } 3279 3280 /** 3281 * Read the eeprom to find out what channels are valid for the given 3282 * band and update net80211 with what we find. 3283 */ 3284 static void 3285 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3286 { 3287 struct ifnet *ifp = sc->sc_ifp; 3288 struct ieee80211com *ic = ifp->if_l2com; 3289 const struct wpi_chan_band *band = &wpi_bands[n]; 3290 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3291 struct ieee80211_channel *c; 3292 int chan, i, passive; 3293 3294 wpi_read_prom_data(sc, band->addr, channels, 3295 band->nchan * sizeof (struct wpi_eeprom_chan)); 3296 3297 for (i = 0; i < band->nchan; i++) { 3298 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3299 DPRINTFN(WPI_DEBUG_HW, 3300 ("Channel Not Valid: %d, band %d\n", 3301 band->chan[i],n)); 3302 continue; 3303 } 3304 3305 passive = 0; 3306 chan = band->chan[i]; 3307 c = &ic->ic_channels[ic->ic_nchans++]; 3308 3309 /* is active scan allowed on this channel? */ 3310 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3311 passive = IEEE80211_CHAN_PASSIVE; 3312 } 3313 3314 if (n == 0) { /* 2GHz band */ 3315 c->ic_ieee = chan; 3316 c->ic_freq = ieee80211_ieee2mhz(chan, 3317 IEEE80211_CHAN_2GHZ); 3318 c->ic_flags = IEEE80211_CHAN_B | passive; 3319 3320 c = &ic->ic_channels[ic->ic_nchans++]; 3321 c->ic_ieee = chan; 3322 c->ic_freq = ieee80211_ieee2mhz(chan, 3323 IEEE80211_CHAN_2GHZ); 3324 c->ic_flags = IEEE80211_CHAN_G | passive; 3325 3326 } else { /* 5GHz band */ 3327 /* 3328 * Some 3945ABG adapters support channels 7, 8, 11 3329 * and 12 in the 2GHz *and* 5GHz bands. 3330 * Because of limitations in our net80211(9) stack, 3331 * we can't support these channels in 5GHz band. 3332 * XXX not true; just need to map to proper frequency 3333 */ 3334 if (chan <= 14) 3335 continue; 3336 3337 c->ic_ieee = chan; 3338 c->ic_freq = ieee80211_ieee2mhz(chan, 3339 IEEE80211_CHAN_5GHZ); 3340 c->ic_flags = IEEE80211_CHAN_A | passive; 3341 } 3342 3343 /* save maximum allowed power for this channel */ 3344 sc->maxpwr[chan] = channels[i].maxpwr; 3345 3346 #if 0 3347 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3348 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3349 //ic->ic_channels[chan].ic_minpower... 3350 //ic->ic_channels[chan].ic_maxregtxpower... 3351 #endif 3352 3353 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3354 " passive=%d, offset %d\n", chan, c->ic_freq, 3355 channels[i].flags, sc->maxpwr[chan], 3356 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3357 ic->ic_nchans)); 3358 } 3359 } 3360 3361 static void 3362 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3363 { 3364 struct wpi_power_group *group = &sc->groups[n]; 3365 struct wpi_eeprom_group rgroup; 3366 int i; 3367 3368 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3369 sizeof rgroup); 3370 3371 /* save power group information */ 3372 group->chan = rgroup.chan; 3373 group->maxpwr = rgroup.maxpwr; 3374 /* temperature at which the samples were taken */ 3375 group->temp = (int16_t)le16toh(rgroup.temp); 3376 3377 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3378 group->chan, group->maxpwr, group->temp)); 3379 3380 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3381 group->samples[i].index = rgroup.samples[i].index; 3382 group->samples[i].power = rgroup.samples[i].power; 3383 3384 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3385 group->samples[i].index, group->samples[i].power)); 3386 } 3387 } 3388 3389 /* 3390 * Update Tx power to match what is defined for channel `c'. 3391 */ 3392 static int 3393 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3394 { 3395 struct ifnet *ifp = sc->sc_ifp; 3396 struct ieee80211com *ic = ifp->if_l2com; 3397 struct wpi_power_group *group; 3398 struct wpi_cmd_txpower txpower; 3399 u_int chan; 3400 int i; 3401 3402 /* get channel number */ 3403 chan = ieee80211_chan2ieee(ic, c); 3404 3405 /* find the power group to which this channel belongs */ 3406 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3407 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3408 if (chan <= group->chan) 3409 break; 3410 } else 3411 group = &sc->groups[0]; 3412 3413 memset(&txpower, 0, sizeof txpower); 3414 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3415 txpower.channel = htole16(chan); 3416 3417 /* set Tx power for all OFDM and CCK rates */ 3418 for (i = 0; i <= 11 ; i++) { 3419 /* retrieve Tx power for this channel/rate combination */ 3420 int idx = wpi_get_power_index(sc, group, c, 3421 wpi_ridx_to_rate[i]); 3422 3423 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3424 3425 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3426 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3427 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3428 } else { 3429 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3430 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3431 } 3432 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3433 chan, wpi_ridx_to_rate[i], idx)); 3434 } 3435 3436 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3437 } 3438 3439 /* 3440 * Determine Tx power index for a given channel/rate combination. 3441 * This takes into account the regulatory information from EEPROM and the 3442 * current temperature. 3443 */ 3444 static int 3445 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3446 struct ieee80211_channel *c, int rate) 3447 { 3448 /* fixed-point arithmetic division using a n-bit fractional part */ 3449 #define fdivround(a, b, n) \ 3450 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3451 3452 /* linear interpolation */ 3453 #define interpolate(x, x1, y1, x2, y2, n) \ 3454 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3455 3456 struct ifnet *ifp = sc->sc_ifp; 3457 struct ieee80211com *ic = ifp->if_l2com; 3458 struct wpi_power_sample *sample; 3459 int pwr, idx; 3460 u_int chan; 3461 3462 /* get channel number */ 3463 chan = ieee80211_chan2ieee(ic, c); 3464 3465 /* default power is group's maximum power - 3dB */ 3466 pwr = group->maxpwr / 2; 3467 3468 /* decrease power for highest OFDM rates to reduce distortion */ 3469 switch (rate) { 3470 case 72: /* 36Mb/s */ 3471 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3472 break; 3473 case 96: /* 48Mb/s */ 3474 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3475 break; 3476 case 108: /* 54Mb/s */ 3477 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3478 break; 3479 } 3480 3481 /* never exceed channel's maximum allowed Tx power */ 3482 pwr = min(pwr, sc->maxpwr[chan]); 3483 3484 /* retrieve power index into gain tables from samples */ 3485 for (sample = group->samples; sample < &group->samples[3]; sample++) 3486 if (pwr > sample[1].power) 3487 break; 3488 /* fixed-point linear interpolation using a 19-bit fractional part */ 3489 idx = interpolate(pwr, sample[0].power, sample[0].index, 3490 sample[1].power, sample[1].index, 19); 3491 3492 /* 3493 * Adjust power index based on current temperature 3494 * - if colder than factory-calibrated: decreate output power 3495 * - if warmer than factory-calibrated: increase output power 3496 */ 3497 idx -= (sc->temp - group->temp) * 11 / 100; 3498 3499 /* decrease power for CCK rates (-5dB) */ 3500 if (!WPI_RATE_IS_OFDM(rate)) 3501 idx += 10; 3502 3503 /* keep power index in a valid range */ 3504 if (idx < 0) 3505 return 0; 3506 if (idx > WPI_MAX_PWR_INDEX) 3507 return WPI_MAX_PWR_INDEX; 3508 return idx; 3509 3510 #undef interpolate 3511 #undef fdivround 3512 } 3513 3514 /** 3515 * Called by net80211 framework to indicate that a scan 3516 * is starting. This function doesn't actually do the scan, 3517 * wpi_scan_curchan starts things off. This function is more 3518 * of an early warning from the framework we should get ready 3519 * for the scan. 3520 */ 3521 static void 3522 wpi_scan_start(struct ieee80211com *ic) 3523 { 3524 struct ifnet *ifp = ic->ic_ifp; 3525 struct wpi_softc *sc = ifp->if_softc; 3526 3527 WPI_LOCK(sc); 3528 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3529 WPI_UNLOCK(sc); 3530 } 3531 3532 /** 3533 * Called by the net80211 framework, indicates that the 3534 * scan has ended. If there is a scan in progress on the card 3535 * then it should be aborted. 3536 */ 3537 static void 3538 wpi_scan_end(struct ieee80211com *ic) 3539 { 3540 /* XXX ignore */ 3541 } 3542 3543 /** 3544 * Called by the net80211 framework to indicate to the driver 3545 * that the channel should be changed 3546 */ 3547 static void 3548 wpi_set_channel(struct ieee80211com *ic) 3549 { 3550 struct ifnet *ifp = ic->ic_ifp; 3551 struct wpi_softc *sc = ifp->if_softc; 3552 int error; 3553 3554 /* 3555 * Only need to set the channel in Monitor mode. AP scanning and auth 3556 * are already taken care of by their respective firmware commands. 3557 */ 3558 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3559 error = wpi_config(sc); 3560 if (error != 0) 3561 device_printf(sc->sc_dev, 3562 "error %d settting channel\n", error); 3563 } 3564 } 3565 3566 /** 3567 * Called by net80211 to indicate that we need to scan the current 3568 * channel. The channel is previously be set via the wpi_set_channel 3569 * callback. 3570 */ 3571 static void 3572 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3573 { 3574 struct ieee80211vap *vap = ss->ss_vap; 3575 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3576 struct wpi_softc *sc = ifp->if_softc; 3577 3578 WPI_LOCK(sc); 3579 if (wpi_scan(sc)) 3580 ieee80211_cancel_scan(vap); 3581 WPI_UNLOCK(sc); 3582 } 3583 3584 /** 3585 * Called by the net80211 framework to indicate 3586 * the minimum dwell time has been met, terminate the scan. 3587 * We don't actually terminate the scan as the firmware will notify 3588 * us when it's finished and we have no way to interrupt it. 3589 */ 3590 static void 3591 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3592 { 3593 /* NB: don't try to abort scan; wait for firmware to finish */ 3594 } 3595 3596 static void 3597 wpi_hwreset(void *arg, int pending) 3598 { 3599 struct wpi_softc *sc = arg; 3600 3601 WPI_LOCK(sc); 3602 wpi_init_locked(sc, 0); 3603 WPI_UNLOCK(sc); 3604 } 3605 3606 static void 3607 wpi_rfreset(void *arg, int pending) 3608 { 3609 struct wpi_softc *sc = arg; 3610 3611 WPI_LOCK(sc); 3612 wpi_rfkill_resume(sc); 3613 WPI_UNLOCK(sc); 3614 } 3615 3616 /* 3617 * Allocate DMA-safe memory for firmware transfer. 3618 */ 3619 static int 3620 wpi_alloc_fwmem(struct wpi_softc *sc) 3621 { 3622 /* allocate enough contiguous space to store text and data */ 3623 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3624 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3625 BUS_DMA_NOWAIT); 3626 } 3627 3628 static void 3629 wpi_free_fwmem(struct wpi_softc *sc) 3630 { 3631 wpi_dma_contig_free(&sc->fw_dma); 3632 } 3633 3634 /** 3635 * Called every second, wpi_watchdog used by the watch dog timer 3636 * to check that the card is still alive 3637 */ 3638 static void 3639 wpi_watchdog(void *arg) 3640 { 3641 struct wpi_softc *sc = arg; 3642 struct ifnet *ifp = sc->sc_ifp; 3643 struct ieee80211com *ic = ifp->if_l2com; 3644 uint32_t tmp; 3645 3646 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3647 3648 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3649 /* No need to lock firmware memory */ 3650 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3651 3652 if ((tmp & 0x1) == 0) { 3653 /* Radio kill switch is still off */ 3654 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3655 return; 3656 } 3657 3658 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3659 ieee80211_runtask(ic, &sc->sc_radiotask); 3660 return; 3661 } 3662 3663 if (sc->sc_tx_timer > 0) { 3664 if (--sc->sc_tx_timer == 0) { 3665 device_printf(sc->sc_dev,"device timeout\n"); 3666 ifp->if_oerrors++; 3667 ieee80211_runtask(ic, &sc->sc_restarttask); 3668 } 3669 } 3670 if (sc->sc_scan_timer > 0) { 3671 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3672 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3673 device_printf(sc->sc_dev,"scan timeout\n"); 3674 ieee80211_cancel_scan(vap); 3675 ieee80211_runtask(ic, &sc->sc_restarttask); 3676 } 3677 } 3678 3679 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3680 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3681 } 3682 3683 #ifdef WPI_DEBUG 3684 static const char *wpi_cmd_str(int cmd) 3685 { 3686 switch (cmd) { 3687 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3688 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3689 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3690 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3691 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3692 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3693 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3694 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3695 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3696 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3697 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3698 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3699 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3700 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3701 3702 default: 3703 KASSERT(1, ("Unknown Command: %d\n", cmd)); 3704 return "UNKNOWN CMD"; /* Make the compiler happy */ 3705 } 3706 } 3707 #endif 3708 3709 MODULE_DEPEND(wpi, pci, 1, 1, 1); 3710 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3711 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3712 MODULE_DEPEND(wpi, wlan_amrr, 1, 1, 1); 3713