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 * $FreeBSD: src/sys/dev/wpi/if_wpi.c,v 1.27.2.2 2010/02/14 09:34:27 gavin Exp $ 19 */ 20 21 #define VERSION "20071127" 22 23 /* 24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 25 * 26 * The 3945ABG network adapter doesn't use traditional hardware as 27 * many other adaptors do. Instead at run time the eeprom is set into a known 28 * state and told to load boot firmware. The boot firmware loads an init and a 29 * main binary firmware image into SRAM on the card via DMA. 30 * Once the firmware is loaded, the driver/hw then 31 * communicate by way of circular dma rings via the the SRAM to the firmware. 32 * 33 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 34 * The 4 tx data rings allow for prioritization QoS. 35 * 36 * The rx data ring consists of 32 dma buffers. Two registers are used to 37 * indicate where in the ring the driver and the firmware are up to. The 38 * driver sets the initial read index (reg1) and the initial write index (reg2), 39 * the firmware updates the read index (reg1) on rx of a packet and fires an 40 * interrupt. The driver then processes the buffers starting at reg1 indicating 41 * to the firmware which buffers have been accessed by updating reg2. At the 42 * same time allocating new memory for the processed buffer. 43 * 44 * A similar thing happens with the tx rings. The difference is the firmware 45 * stop processing buffers once the queue is full and until confirmation 46 * of a successful transmition (tx_intr) has occurred. 47 * 48 * The command ring operates in the same manner as the tx queues. 49 * 50 * All communication direct to the card (ie eeprom) is classed as Stage1 51 * communication 52 * 53 * All communication via the firmware to the card is classed as State2. 54 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 55 * firmware. The bootstrap firmware and runtime firmware are loaded 56 * from host memory via dma to the card then told to execute. From this point 57 * on the majority of communications between the driver and the card goes 58 * via the firmware. 59 */ 60 61 #include <sys/param.h> 62 #include <sys/sysctl.h> 63 #include <sys/sockio.h> 64 #include <sys/mbuf.h> 65 #include <sys/kernel.h> 66 #include <sys/socket.h> 67 #include <sys/systm.h> 68 #include <sys/malloc.h> 69 #include <sys/queue.h> 70 #include <sys/taskqueue.h> 71 #include <sys/module.h> 72 #include <sys/bus.h> 73 #include <sys/endian.h> 74 #include <sys/linker.h> 75 #include <sys/firmware.h> 76 77 #include <sys/bus.h> 78 #include <sys/resource.h> 79 #include <sys/rman.h> 80 81 #include <bus/pci/pcireg.h> 82 #include <bus/pci/pcivar.h> 83 84 #include <net/bpf.h> 85 #include <net/if.h> 86 #include <net/if_arp.h> 87 #include <net/ifq_var.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 <netproto/802_11/ieee80211_var.h> 94 #include <netproto/802_11/ieee80211_radiotap.h> 95 #include <netproto/802_11/ieee80211_regdomain.h> 96 #include <netproto/802_11/ieee80211_ratectl.h> 97 98 #include <netinet/in.h> 99 #include <netinet/in_systm.h> 100 #include <netinet/in_var.h> 101 #include <netinet/ip.h> 102 #include <netinet/if_ether.h> 103 104 /* XXX: move elsewhere */ 105 #define abs(x) (((x) < 0) ? -(x) : (x)) 106 107 #include "if_wpireg.h" 108 #include "if_wpivar.h" 109 110 #define WPI_DEBUG 111 112 #ifdef WPI_DEBUG 113 #define DPRINTF(x) do { if (wpi_debug != 0) kprintf x; } while (0) 114 #define DPRINTFN(n, x) do { if (wpi_debug & n) kprintf x; } while (0) 115 #define WPI_DEBUG_SET (wpi_debug != 0) 116 117 enum { 118 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */ 119 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */ 120 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/ 121 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */ 122 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/ 123 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */ 124 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */ 125 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */ 126 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */ 127 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */ 128 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */ 129 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */ 130 WPI_DEBUG_ANY = 0xffffffff 131 }; 132 133 static int wpi_debug = 1; 134 SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level"); 135 TUNABLE_INT("debug.wpi", &wpi_debug); 136 137 #else 138 #define DPRINTF(x) 139 #define DPRINTFN(n, x) 140 #define WPI_DEBUG_SET 0 141 #endif 142 143 struct wpi_ident { 144 uint16_t vendor; 145 uint16_t device; 146 uint16_t subdevice; 147 const char *name; 148 }; 149 150 static const struct wpi_ident wpi_ident_table[] = { 151 /* The below entries support ABG regardless of the subid */ 152 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 153 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" }, 154 /* The below entries only support BG */ 155 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" }, 156 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" }, 157 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" }, 158 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" }, 159 { 0, 0, 0, NULL } 160 }; 161 162 static struct ieee80211vap *wpi_vap_create(struct ieee80211com *, 163 const char name[IFNAMSIZ], int unit, int opmode, 164 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 165 const uint8_t mac[IEEE80211_ADDR_LEN]); 166 static void wpi_vap_delete(struct ieee80211vap *); 167 static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *, 168 void **, bus_size_t, bus_size_t, int); 169 static void wpi_dma_contig_free(struct wpi_dma_info *); 170 static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 171 static int wpi_alloc_shared(struct wpi_softc *); 172 static void wpi_free_shared(struct wpi_softc *); 173 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 174 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 175 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *); 176 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *, 177 int, int); 178 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 179 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *); 180 static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *, 181 const uint8_t mac[IEEE80211_ADDR_LEN]); 182 static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 183 static void wpi_mem_lock(struct wpi_softc *); 184 static void wpi_mem_unlock(struct wpi_softc *); 185 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 186 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 187 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 188 const uint32_t *, int); 189 static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 190 static int wpi_alloc_fwmem(struct wpi_softc *); 191 static void wpi_free_fwmem(struct wpi_softc *); 192 static int wpi_load_firmware(struct wpi_softc *); 193 static void wpi_unload_firmware(struct wpi_softc *); 194 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 195 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 196 struct wpi_rx_data *); 197 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 198 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 199 static void wpi_notif_intr(struct wpi_softc *); 200 static void wpi_intr(void *); 201 static uint8_t wpi_plcp_signal(int); 202 static void wpi_watchdog_callout(void *); 203 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 204 struct ieee80211_node *, int); 205 static void wpi_start(struct ifnet *, struct ifaltq_subque *); 206 static void wpi_start_locked(struct ifnet *); 207 static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 208 const struct ieee80211_bpf_params *); 209 static void wpi_scan_start(struct ieee80211com *); 210 static void wpi_scan_end(struct ieee80211com *); 211 static void wpi_set_channel(struct ieee80211com *); 212 static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 213 static void wpi_scan_mindwell(struct ieee80211_scan_state *); 214 static int wpi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *); 215 static void wpi_read_eeprom(struct wpi_softc *, 216 uint8_t macaddr[IEEE80211_ADDR_LEN]); 217 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 218 static void wpi_read_eeprom_group(struct wpi_softc *, int); 219 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 220 static int wpi_wme_update(struct ieee80211com *); 221 static int wpi_mrr_setup(struct wpi_softc *); 222 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 223 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 224 #if 0 225 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 226 #endif 227 static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 228 static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 229 static int wpi_scan(struct wpi_softc *); 230 static int wpi_config(struct wpi_softc *); 231 static void wpi_stop_master(struct wpi_softc *); 232 static int wpi_power_up(struct wpi_softc *); 233 static int wpi_reset(struct wpi_softc *); 234 static void wpi_hwreset_task(void *, int); 235 static void wpi_rfreset_task(void *, int); 236 static void wpi_hw_config(struct wpi_softc *); 237 static void wpi_init(void *); 238 static void wpi_init_locked(struct wpi_softc *, int); 239 static void wpi_stop(struct wpi_softc *); 240 static void wpi_stop_locked(struct wpi_softc *); 241 242 static void wpi_newassoc(struct ieee80211_node *, int); 243 static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 244 int); 245 static void wpi_calib_timeout_callout(void *); 246 static void wpi_power_calibration(struct wpi_softc *, int); 247 static int wpi_get_power_index(struct wpi_softc *, 248 struct wpi_power_group *, struct ieee80211_channel *, int); 249 #ifdef WPI_DEBUG 250 static const char *wpi_cmd_str(int); 251 #endif 252 static int wpi_probe(device_t); 253 static int wpi_attach(device_t); 254 static int wpi_detach(device_t); 255 static int wpi_shutdown(device_t); 256 static int wpi_suspend(device_t); 257 static int wpi_resume(device_t); 258 259 260 static device_method_t wpi_methods[] = { 261 /* Device interface */ 262 DEVMETHOD(device_probe, wpi_probe), 263 DEVMETHOD(device_attach, wpi_attach), 264 DEVMETHOD(device_detach, wpi_detach), 265 DEVMETHOD(device_shutdown, wpi_shutdown), 266 DEVMETHOD(device_suspend, wpi_suspend), 267 DEVMETHOD(device_resume, wpi_resume), 268 269 DEVMETHOD_END 270 }; 271 272 static driver_t wpi_driver = { 273 "wpi", 274 wpi_methods, 275 sizeof (struct wpi_softc) 276 }; 277 278 static devclass_t wpi_devclass; 279 280 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 281 282 static const uint8_t wpi_ridx_to_plcp[] = { 283 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 284 /* R1-R4 (ral/ural is R4-R1) */ 285 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 286 /* CCK: device-dependent */ 287 10, 20, 55, 110 288 }; 289 static const uint8_t wpi_ridx_to_rate[] = { 290 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 291 2, 4, 11, 22 /*CCK */ 292 }; 293 294 295 static int 296 wpi_probe(device_t dev) 297 { 298 const struct wpi_ident *ident; 299 300 wlan_serialize_enter(); 301 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 302 if (pci_get_vendor(dev) == ident->vendor && 303 pci_get_device(dev) == ident->device) { 304 device_set_desc(dev, ident->name); 305 wlan_serialize_exit(); 306 return 0; 307 } 308 } 309 wlan_serialize_exit(); 310 return ENXIO; 311 } 312 313 /** 314 * Load the firmare image from disk to the allocated dma buffer. 315 * we also maintain the reference to the firmware pointer as there 316 * is times where we may need to reload the firmware but we are not 317 * in a context that can access the filesystem (ie taskq cause by restart) 318 * 319 * @return 0 on success, an errno on failure 320 */ 321 static int 322 wpi_load_firmware(struct wpi_softc *sc) 323 { 324 const struct firmware *fp; 325 struct wpi_dma_info *dma = &sc->fw_dma; 326 const struct wpi_firmware_hdr *hdr; 327 const uint8_t *itext, *idata, *rtext, *rdata, *btext; 328 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz; 329 int error; 330 331 DPRINTFN(WPI_DEBUG_FIRMWARE, 332 ("Attempting Loading Firmware from wpi_fw module\n")); 333 334 wlan_assert_serialized(); 335 wlan_serialize_exit(); 336 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) { 337 device_printf(sc->sc_dev, 338 "could not load firmware image 'wpifw_fw'\n"); 339 error = ENOENT; 340 wlan_serialize_enter(); 341 goto fail; 342 } 343 wlan_serialize_enter(); 344 345 fp = sc->fw_fp; 346 347 /* Validate the firmware is minimum a particular version */ 348 if (fp->version < WPI_FW_MINVERSION) { 349 device_printf(sc->sc_dev, 350 "firmware version is too old. Need %d, got %d\n", 351 WPI_FW_MINVERSION, 352 fp->version); 353 error = ENXIO; 354 goto fail; 355 } 356 357 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 358 device_printf(sc->sc_dev, 359 "firmware file too short: %zu bytes\n", fp->datasize); 360 error = ENXIO; 361 goto fail; 362 } 363 364 hdr = (const struct wpi_firmware_hdr *)fp->data; 365 366 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 367 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 368 369 rtextsz = le32toh(hdr->rtextsz); 370 rdatasz = le32toh(hdr->rdatasz); 371 itextsz = le32toh(hdr->itextsz); 372 idatasz = le32toh(hdr->idatasz); 373 btextsz = le32toh(hdr->btextsz); 374 375 /* check that all firmware segments are present */ 376 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 377 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 378 device_printf(sc->sc_dev, 379 "firmware file too short: %zu bytes\n", fp->datasize); 380 error = ENXIO; /* XXX appropriate error code? */ 381 goto fail; 382 } 383 384 /* get pointers to firmware segments */ 385 rtext = (const uint8_t *)(hdr + 1); 386 rdata = rtext + rtextsz; 387 itext = rdata + rdatasz; 388 idata = itext + itextsz; 389 btext = idata + idatasz; 390 391 DPRINTFN(WPI_DEBUG_FIRMWARE, 392 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 393 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 394 (le32toh(hdr->version) & 0xff000000) >> 24, 395 (le32toh(hdr->version) & 0x00ff0000) >> 16, 396 (le32toh(hdr->version) & 0x0000ffff), 397 rtextsz, rdatasz, 398 itextsz, idatasz, btextsz)); 399 400 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 401 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 402 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 403 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 404 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 405 406 /* sanity checks */ 407 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 408 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 409 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 410 idatasz > WPI_FW_INIT_DATA_MAXSZ || 411 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 412 (btextsz & 3) != 0) { 413 device_printf(sc->sc_dev, "firmware invalid\n"); 414 error = EINVAL; 415 goto fail; 416 } 417 418 /* copy initialization images into pre-allocated DMA-safe memory */ 419 memcpy(dma->vaddr, idata, idatasz); 420 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 421 422 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 423 424 /* tell adapter where to find initialization images */ 425 wpi_mem_lock(sc); 426 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 427 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 428 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 429 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 430 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 431 wpi_mem_unlock(sc); 432 433 /* load firmware boot code */ 434 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 435 device_printf(sc->sc_dev, "Failed to load microcode\n"); 436 goto fail; 437 } 438 439 /* now press "execute" */ 440 WPI_WRITE(sc, WPI_RESET, 0); 441 442 /* wait at most one second for the first alive notification */ 443 if ((error = zsleep(sc, &wlan_global_serializer, 0, "wpiinit", hz)) != 0) { 444 device_printf(sc->sc_dev, 445 "timeout waiting for adapter to initialize\n"); 446 goto fail; 447 } 448 449 /* copy runtime images into pre-allocated DMA-sage memory */ 450 memcpy(dma->vaddr, rdata, rdatasz); 451 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 452 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 453 454 /* tell adapter where to find runtime images */ 455 wpi_mem_lock(sc); 456 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 457 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 458 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 459 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 460 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 461 wpi_mem_unlock(sc); 462 463 /* wait at most one second for the first alive notification */ 464 if ((error = zsleep(sc, &wlan_global_serializer, 0, "wpiinit", hz)) != 0) { 465 device_printf(sc->sc_dev, 466 "timeout waiting for adapter to initialize2\n"); 467 goto fail; 468 } 469 470 DPRINTFN(WPI_DEBUG_FIRMWARE, 471 ("Firmware loaded to driver successfully\n")); 472 return error; 473 fail: 474 wpi_unload_firmware(sc); 475 return error; 476 } 477 478 /** 479 * Free the referenced firmware image 480 */ 481 static void 482 wpi_unload_firmware(struct wpi_softc *sc) 483 { 484 if (sc->fw_fp) { 485 wlan_assert_serialized(); 486 wlan_serialize_exit(); 487 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 488 wlan_serialize_enter(); 489 sc->fw_fp = NULL; 490 } 491 } 492 493 static int 494 wpi_attach(device_t dev) 495 { 496 struct wpi_softc *sc; 497 struct ifnet *ifp; 498 struct ieee80211com *ic; 499 int ac, error, supportsa = 1; 500 uint32_t tmp; 501 const struct wpi_ident *ident; 502 uint8_t macaddr[IEEE80211_ADDR_LEN]; 503 504 wlan_serialize_enter(); 505 sc = device_get_softc(dev); 506 sc->sc_dev = dev; 507 508 if (bootverbose || WPI_DEBUG_SET) 509 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 510 511 /* 512 * Some card's only support 802.11b/g not a, check to see if 513 * this is one such card. A 0x0 in the subdevice table indicates 514 * the entire subdevice range is to be ignored. 515 */ 516 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 517 if (ident->subdevice && 518 pci_get_subdevice(dev) == ident->subdevice) { 519 supportsa = 0; 520 break; 521 } 522 } 523 524 /* Create the tasks that can be queued */ 525 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset_task, sc); 526 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset_task, sc); 527 528 callout_init(&sc->calib_to_callout); 529 callout_init(&sc->watchdog_to_callout); 530 531 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 532 device_printf(dev, "chip is in D%d power mode " 533 "-- setting to D0\n", pci_get_powerstate(dev)); 534 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 535 } 536 537 /* disable the retry timeout register */ 538 pci_write_config(dev, 0x41, 0, 1); 539 540 /* enable bus-mastering */ 541 pci_enable_busmaster(dev); 542 543 sc->mem_rid = PCIR_BAR(0); 544 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 545 RF_ACTIVE); 546 if (sc->mem == NULL) { 547 device_printf(dev, "could not allocate memory resource\n"); 548 error = ENOMEM; 549 goto fail; 550 } 551 552 sc->sc_st = rman_get_bustag(sc->mem); 553 sc->sc_sh = rman_get_bushandle(sc->mem); 554 555 sc->irq_rid = 0; 556 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 557 RF_ACTIVE | RF_SHAREABLE); 558 if (sc->irq == NULL) { 559 device_printf(dev, "could not allocate interrupt resource\n"); 560 error = ENOMEM; 561 goto fail; 562 } 563 564 /* 565 * Allocate DMA memory for firmware transfers. 566 */ 567 if ((error = wpi_alloc_fwmem(sc)) != 0) { 568 kprintf(": could not allocate firmware memory\n"); 569 error = ENOMEM; 570 goto fail; 571 } 572 573 /* 574 * Put adapter into a known state. 575 */ 576 if ((error = wpi_reset(sc)) != 0) { 577 device_printf(dev, "could not reset adapter\n"); 578 goto fail; 579 } 580 581 wpi_mem_lock(sc); 582 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 583 if (bootverbose || WPI_DEBUG_SET) 584 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 585 586 wpi_mem_unlock(sc); 587 588 /* Allocate shared page */ 589 if ((error = wpi_alloc_shared(sc)) != 0) { 590 device_printf(dev, "could not allocate shared page\n"); 591 goto fail; 592 } 593 594 /* tx data queues - 4 for QoS purposes */ 595 for (ac = 0; ac < WME_NUM_AC; ac++) { 596 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 597 if (error != 0) { 598 device_printf(dev, "could not allocate Tx ring %d\n",ac); 599 goto fail; 600 } 601 } 602 603 /* command queue to talk to the card's firmware */ 604 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 605 if (error != 0) { 606 device_printf(dev, "could not allocate command ring\n"); 607 goto fail; 608 } 609 610 /* receive data queue */ 611 error = wpi_alloc_rx_ring(sc, &sc->rxq); 612 if (error != 0) { 613 device_printf(dev, "could not allocate Rx ring\n"); 614 goto fail; 615 } 616 617 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 618 if (ifp == NULL) { 619 device_printf(dev, "can not if_alloc()\n"); 620 error = ENOMEM; 621 goto fail; 622 } 623 ic = ifp->if_l2com; 624 625 ic->ic_ifp = ifp; 626 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 627 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 628 629 /* set device capabilities */ 630 ic->ic_caps = 631 IEEE80211_C_STA /* station mode supported */ 632 | IEEE80211_C_MONITOR /* monitor mode supported */ 633 | IEEE80211_C_TXPMGT /* tx power management */ 634 | IEEE80211_C_SHSLOT /* short slot time supported */ 635 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 636 | IEEE80211_C_WPA /* 802.11i */ 637 /* XXX looks like WME is partly supported? */ 638 #if 0 639 | IEEE80211_C_IBSS /* IBSS mode support */ 640 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 641 | IEEE80211_C_WME /* 802.11e */ 642 | IEEE80211_C_HOSTAP /* Host access point mode */ 643 #endif 644 ; 645 646 /* 647 * Read in the eeprom and also setup the channels for 648 * net80211. We don't set the rates as net80211 does this for us 649 */ 650 wpi_read_eeprom(sc, macaddr); 651 652 if (bootverbose || WPI_DEBUG_SET) { 653 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 654 device_printf(sc->sc_dev, "Hardware Type: %c\n", 655 sc->type > 1 ? 'B': '?'); 656 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 657 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 658 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 659 supportsa ? "does" : "does not"); 660 661 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 662 what sc->rev really represents - benjsc 20070615 */ 663 } 664 665 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 666 ifp->if_softc = sc; 667 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 668 ifp->if_init = wpi_init; 669 ifp->if_ioctl = wpi_ioctl; 670 ifp->if_start = wpi_start; 671 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); 672 ifq_set_ready(&ifp->if_snd); 673 674 ieee80211_ifattach(ic, macaddr); 675 /* override default methods */ 676 ic->ic_node_alloc = wpi_node_alloc; 677 ic->ic_newassoc = wpi_newassoc; 678 ic->ic_raw_xmit = wpi_raw_xmit; 679 ic->ic_wme.wme_update = wpi_wme_update; 680 ic->ic_scan_start = wpi_scan_start; 681 ic->ic_scan_end = wpi_scan_end; 682 ic->ic_set_channel = wpi_set_channel; 683 ic->ic_scan_curchan = wpi_scan_curchan; 684 ic->ic_scan_mindwell = wpi_scan_mindwell; 685 686 ic->ic_vap_create = wpi_vap_create; 687 ic->ic_vap_delete = wpi_vap_delete; 688 689 ieee80211_radiotap_attach(ic, 690 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 691 WPI_TX_RADIOTAP_PRESENT, 692 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 693 WPI_RX_RADIOTAP_PRESENT); 694 695 /* 696 * Hook our interrupt after all initialization is complete. 697 */ 698 error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE, 699 wpi_intr, sc, &sc->sc_ih, &wlan_global_serializer); 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 wlan_serialize_exit(); 711 return 0; 712 713 fail: 714 wlan_serialize_exit(); 715 wpi_detach(dev); 716 return ENXIO; 717 } 718 719 static int 720 wpi_detach(device_t dev) 721 { 722 struct wpi_softc *sc; 723 struct ifnet *ifp; 724 struct ieee80211com *ic; 725 int ac; 726 727 wlan_serialize_enter(); 728 sc = device_get_softc(dev); 729 ifp = sc->sc_ifp; 730 if (ifp != NULL) { 731 ic = ifp->if_l2com; 732 733 ieee80211_draintask(ic, &sc->sc_restarttask); 734 ieee80211_draintask(ic, &sc->sc_radiotask); 735 wpi_stop(sc); 736 callout_stop(&sc->watchdog_to_callout); 737 callout_stop(&sc->calib_to_callout); 738 ieee80211_ifdetach(ic); 739 } 740 741 if (sc->txq[0].data_dmat) { 742 for (ac = 0; ac < WME_NUM_AC; ac++) 743 wpi_free_tx_ring(sc, &sc->txq[ac]); 744 745 wpi_free_tx_ring(sc, &sc->cmdq); 746 wpi_free_rx_ring(sc, &sc->rxq); 747 wpi_free_shared(sc); 748 } 749 750 if (sc->fw_fp != NULL) { 751 wpi_unload_firmware(sc); 752 } 753 754 if (sc->fw_dma.tag) 755 wpi_free_fwmem(sc); 756 757 if (sc->irq != NULL) { 758 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 759 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 760 } 761 762 if (sc->mem != NULL) 763 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 764 765 if (ifp != NULL) 766 if_free(ifp); 767 768 wlan_serialize_exit(); 769 return 0; 770 } 771 772 static struct ieee80211vap * 773 wpi_vap_create(struct ieee80211com *ic, 774 const char name[IFNAMSIZ], int unit, int opmode, int flags, 775 const uint8_t bssid[IEEE80211_ADDR_LEN], 776 const uint8_t mac[IEEE80211_ADDR_LEN]) 777 { 778 struct wpi_vap *wvp; 779 struct ieee80211vap *vap; 780 781 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 782 return NULL; 783 wvp = (struct wpi_vap *) kmalloc(sizeof(struct wpi_vap), 784 M_80211_VAP, M_INTWAIT | M_ZERO); 785 if (wvp == NULL) 786 return NULL; 787 vap = &wvp->vap; 788 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 789 /* override with driver methods */ 790 wvp->newstate = vap->iv_newstate; 791 vap->iv_newstate = wpi_newstate; 792 793 ieee80211_ratectl_init(vap); 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_ratectl_deinit(vap); 807 ieee80211_vap_detach(vap); 808 kfree(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(dma->tag, align, 852 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 853 NULL, NULL, reqsize, 854 1, reqsize, flags, 855 &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(ring->data_dmat, 1, 0, 976 BUS_SPACE_MAXADDR_32BIT, 977 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 978 MJUMPAGESIZE, BUS_DMA_NOWAIT, &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(MB_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 = kmalloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1107 M_INTWAIT | 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(ring->data_dmat, 1, 0, 1115 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1116 WPI_MAX_SCATTER - 1, MJUMPAGESIZE, BUS_DMA_NOWAIT, 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 kfree(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; 1210 1211 wlan_serialize_enter(); 1212 sc = device_get_softc(dev); 1213 wpi_stop_locked(sc); 1214 wpi_unload_firmware(sc); 1215 wlan_serialize_exit(); 1216 1217 return 0; 1218 } 1219 1220 static int 1221 wpi_suspend(device_t dev) 1222 { 1223 struct wpi_softc *sc; 1224 1225 wlan_serialize_enter(); 1226 sc = device_get_softc(dev); 1227 wpi_stop(sc); 1228 wlan_serialize_exit(); 1229 return 0; 1230 } 1231 1232 static int 1233 wpi_resume(device_t dev) 1234 { 1235 struct wpi_softc *sc; 1236 struct ifnet *ifp; 1237 1238 wlan_serialize_enter(); 1239 sc = device_get_softc(dev); 1240 ifp = sc->sc_ifp; 1241 pci_write_config(dev, 0x41, 0, 1); 1242 1243 if (ifp->if_flags & IFF_UP) { 1244 wpi_init(ifp->if_softc); 1245 if (ifp->if_flags & IFF_RUNNING) 1246 if_devstart(ifp); 1247 } 1248 wlan_serialize_exit(); 1249 return 0; 1250 } 1251 1252 /* ARGSUSED */ 1253 static struct ieee80211_node * 1254 wpi_node_alloc(struct ieee80211vap *vap __unused, 1255 const uint8_t mac[IEEE80211_ADDR_LEN] __unused) 1256 { 1257 struct wpi_node *wn; 1258 1259 wn = kmalloc(sizeof (struct wpi_node), M_80211_NODE, M_INTWAIT | M_ZERO); 1260 1261 return &wn->ni; 1262 } 1263 1264 /** 1265 * Called by net80211 when ever there is a change to 80211 state machine 1266 */ 1267 static int 1268 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1269 { 1270 struct wpi_vap *wvp = WPI_VAP(vap); 1271 struct ieee80211com *ic = vap->iv_ic; 1272 struct ifnet *ifp = ic->ic_ifp; 1273 struct wpi_softc *sc = ifp->if_softc; 1274 int error; 1275 1276 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1277 ieee80211_state_name[vap->iv_state], 1278 ieee80211_state_name[nstate], sc->flags)); 1279 1280 if (nstate == IEEE80211_S_AUTH) { 1281 /* The node must be registered in the firmware before auth */ 1282 error = wpi_auth(sc, vap); 1283 if (error != 0) { 1284 device_printf(sc->sc_dev, 1285 "%s: could not move to auth state, error %d\n", 1286 __func__, error); 1287 } 1288 } 1289 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1290 error = wpi_run(sc, vap); 1291 if (error != 0) { 1292 device_printf(sc->sc_dev, 1293 "%s: could not move to run state, error %d\n", 1294 __func__, error); 1295 } 1296 } 1297 if (nstate == IEEE80211_S_RUN) { 1298 /* RUN -> RUN transition; just restart the timers */ 1299 wpi_calib_timeout_callout(sc); 1300 /* XXX split out rate control timer */ 1301 } 1302 return wvp->newstate(vap, nstate, arg); 1303 } 1304 1305 /* 1306 * Grab exclusive access to NIC memory. 1307 */ 1308 static void 1309 wpi_mem_lock(struct wpi_softc *sc) 1310 { 1311 int ntries; 1312 uint32_t tmp; 1313 1314 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1315 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1316 1317 /* spin until we actually get the lock */ 1318 for (ntries = 0; ntries < 100; ntries++) { 1319 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1320 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1321 break; 1322 DELAY(10); 1323 } 1324 if (ntries == 100) 1325 device_printf(sc->sc_dev, "could not lock memory\n"); 1326 } 1327 1328 /* 1329 * Release lock on NIC memory. 1330 */ 1331 static void 1332 wpi_mem_unlock(struct wpi_softc *sc) 1333 { 1334 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1335 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1336 } 1337 1338 static uint32_t 1339 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1340 { 1341 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1342 return WPI_READ(sc, WPI_READ_MEM_DATA); 1343 } 1344 1345 static void 1346 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1347 { 1348 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1349 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1350 } 1351 1352 static void 1353 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1354 const uint32_t *data, int wlen) 1355 { 1356 for (; wlen > 0; wlen--, data++, addr+=4) 1357 wpi_mem_write(sc, addr, *data); 1358 } 1359 1360 /* 1361 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1362 * using the traditional bit-bang method. Data is read up until len bytes have 1363 * been obtained. 1364 */ 1365 static uint16_t 1366 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1367 { 1368 int ntries; 1369 uint32_t val; 1370 uint8_t *out = data; 1371 1372 wpi_mem_lock(sc); 1373 1374 for (; len > 0; len -= 2, addr++) { 1375 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1376 1377 for (ntries = 0; ntries < 10; ntries++) { 1378 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1379 break; 1380 DELAY(5); 1381 } 1382 1383 if (ntries == 10) { 1384 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1385 return ETIMEDOUT; 1386 } 1387 1388 *out++= val >> 16; 1389 if (len > 1) 1390 *out ++= val >> 24; 1391 } 1392 1393 wpi_mem_unlock(sc); 1394 1395 return 0; 1396 } 1397 1398 /* 1399 * The firmware text and data segments are transferred to the NIC using DMA. 1400 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1401 * where to find it. Once the NIC has copied the firmware into its internal 1402 * memory, we can free our local copy in the driver. 1403 */ 1404 static int 1405 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1406 { 1407 int error, ntries; 1408 1409 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1410 1411 size /= sizeof(uint32_t); 1412 1413 wpi_mem_lock(sc); 1414 1415 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1416 (const uint32_t *)fw, size); 1417 1418 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1419 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1420 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1421 1422 /* run microcode */ 1423 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1424 1425 /* wait while the adapter is busy copying the firmware */ 1426 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1427 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1428 DPRINTFN(WPI_DEBUG_HW, 1429 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1430 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1431 if (status & WPI_TX_IDLE(6)) { 1432 DPRINTFN(WPI_DEBUG_HW, 1433 ("Status Match! - ntries = %d\n", ntries)); 1434 break; 1435 } 1436 DELAY(10); 1437 } 1438 if (ntries == 1000) { 1439 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1440 error = ETIMEDOUT; 1441 } 1442 1443 /* start the microcode executing */ 1444 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1445 1446 wpi_mem_unlock(sc); 1447 1448 return (error); 1449 } 1450 1451 static void 1452 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1453 struct wpi_rx_data *data) 1454 { 1455 struct ifnet *ifp = sc->sc_ifp; 1456 struct ieee80211com *ic = ifp->if_l2com; 1457 struct wpi_rx_ring *ring = &sc->rxq; 1458 struct wpi_rx_stat *stat; 1459 struct wpi_rx_head *head; 1460 struct wpi_rx_tail *tail; 1461 struct ieee80211_node *ni; 1462 struct mbuf *m, *mnew; 1463 bus_addr_t paddr; 1464 int error; 1465 1466 stat = (struct wpi_rx_stat *)(desc + 1); 1467 1468 if (stat->len > WPI_STAT_MAXLEN) { 1469 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1470 IFNET_STAT_INC(ifp, ierrors, 1); 1471 return; 1472 } 1473 1474 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1475 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1476 1477 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1478 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1479 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1480 (uintmax_t)le64toh(tail->tstamp))); 1481 1482 /* discard Rx frames with bad CRC early */ 1483 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1484 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1485 le32toh(tail->flags))); 1486 IFNET_STAT_INC(ifp, ierrors, 1); 1487 return; 1488 } 1489 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1490 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1491 le16toh(head->len))); 1492 IFNET_STAT_INC(ifp, ierrors, 1); 1493 return; 1494 } 1495 1496 /* XXX don't need mbuf, just dma buffer */ 1497 mnew = m_getjcl(MB_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1498 if (mnew == NULL) { 1499 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1500 __func__)); 1501 IFNET_STAT_INC(ifp, ierrors, 1); 1502 return; 1503 } 1504 error = bus_dmamap_load(ring->data_dmat, data->map, 1505 mtod(mnew, caddr_t), MJUMPAGESIZE, 1506 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1507 if (error != 0 && error != EFBIG) { 1508 device_printf(sc->sc_dev, 1509 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1510 m_freem(mnew); 1511 IFNET_STAT_INC(ifp, ierrors, 1); 1512 return; 1513 } 1514 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1515 1516 /* finalize mbuf and swap in new one */ 1517 m = data->m; 1518 m->m_pkthdr.rcvif = ifp; 1519 m->m_data = (caddr_t)(head + 1); 1520 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1521 1522 data->m = mnew; 1523 /* update Rx descriptor */ 1524 ring->desc[ring->cur] = htole32(paddr); 1525 1526 if (ieee80211_radiotap_active(ic)) { 1527 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1528 1529 tap->wr_flags = 0; 1530 tap->wr_chan_freq = 1531 htole16(ic->ic_channels[head->chan].ic_freq); 1532 tap->wr_chan_flags = 1533 htole16(ic->ic_channels[head->chan].ic_flags); 1534 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1535 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1536 tap->wr_tsft = tail->tstamp; 1537 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1538 switch (head->rate) { 1539 /* CCK rates */ 1540 case 10: tap->wr_rate = 2; break; 1541 case 20: tap->wr_rate = 4; break; 1542 case 55: tap->wr_rate = 11; break; 1543 case 110: tap->wr_rate = 22; break; 1544 /* OFDM rates */ 1545 case 0xd: tap->wr_rate = 12; break; 1546 case 0xf: tap->wr_rate = 18; break; 1547 case 0x5: tap->wr_rate = 24; break; 1548 case 0x7: tap->wr_rate = 36; break; 1549 case 0x9: tap->wr_rate = 48; break; 1550 case 0xb: tap->wr_rate = 72; break; 1551 case 0x1: tap->wr_rate = 96; break; 1552 case 0x3: tap->wr_rate = 108; break; 1553 /* unknown rate: should not happen */ 1554 default: tap->wr_rate = 0; 1555 } 1556 if (le16toh(head->flags) & 0x4) 1557 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1558 } 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); 1563 ieee80211_free_node(ni); 1564 } else 1565 (void) ieee80211_input_all(ic, m, stat->rssi, 0); 1566 } 1567 1568 static void 1569 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1570 { 1571 struct ifnet *ifp = sc->sc_ifp; 1572 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1573 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1574 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1575 struct ieee80211_node *ni = txdata->ni; 1576 struct ieee80211vap *vap = ni->ni_vap; 1577 int retrycnt = 0; 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 if (stat->ntries > 0) { 1591 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1592 retrycnt = 1; 1593 } 1594 ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS, 1595 &retrycnt, NULL); 1596 1597 /* XXX oerrors should only count errors !maxtries */ 1598 if ((le32toh(stat->status) & 0xff) != 1) 1599 IFNET_STAT_INC(ifp, oerrors, 1); 1600 else 1601 IFNET_STAT_INC(ifp, opackets, 1); 1602 1603 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1604 bus_dmamap_unload(ring->data_dmat, txdata->map); 1605 /* XXX handle M_TXCB? */ 1606 m_freem(txdata->m); 1607 txdata->m = NULL; 1608 ieee80211_free_node(txdata->ni); 1609 txdata->ni = NULL; 1610 1611 ring->queued--; 1612 1613 sc->sc_tx_timer = 0; 1614 ifq_clr_oactive(&ifp->if_snd); 1615 wpi_start_locked(ifp); 1616 } 1617 1618 static void 1619 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1620 { 1621 struct wpi_tx_ring *ring = &sc->cmdq; 1622 struct wpi_tx_data *data; 1623 1624 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1625 "type=%s len=%d\n", desc->qid, desc->idx, 1626 desc->flags, wpi_cmd_str(desc->type), 1627 le32toh(desc->len))); 1628 1629 if ((desc->qid & 7) != 4) 1630 return; /* not a command ack */ 1631 1632 data = &ring->data[desc->idx]; 1633 1634 /* if the command was mapped in a mbuf, free it */ 1635 if (data->m != NULL) { 1636 bus_dmamap_unload(ring->data_dmat, data->map); 1637 m_freem(data->m); 1638 data->m = NULL; 1639 } 1640 1641 sc->flags &= ~WPI_FLAG_BUSY; 1642 wakeup(&ring->cmd[desc->idx]); 1643 } 1644 1645 static void 1646 wpi_notif_intr(struct wpi_softc *sc) 1647 { 1648 struct ifnet *ifp = sc->sc_ifp; 1649 struct ieee80211com *ic = ifp->if_l2com; 1650 struct wpi_rx_desc *desc; 1651 struct wpi_rx_data *data; 1652 uint32_t hw; 1653 1654 hw = le32toh(sc->shared->next); 1655 while (sc->rxq.cur != hw) { 1656 data = &sc->rxq.data[sc->rxq.cur]; 1657 desc = (void *)data->m->m_ext.ext_buf; 1658 1659 DPRINTFN(WPI_DEBUG_NOTIFY, 1660 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1661 desc->qid, 1662 desc->idx, 1663 desc->flags, 1664 desc->type, 1665 le32toh(desc->len))); 1666 1667 if (!(desc->qid & 0x80)) /* reply to a command */ 1668 wpi_cmd_intr(sc, desc); 1669 1670 switch (desc->type) { 1671 case WPI_RX_DONE: 1672 /* a 802.11 frame was received */ 1673 wpi_rx_intr(sc, desc, data); 1674 break; 1675 1676 case WPI_TX_DONE: 1677 /* a 802.11 frame has been transmitted */ 1678 wpi_tx_intr(sc, desc); 1679 break; 1680 1681 case WPI_UC_READY: 1682 { 1683 struct wpi_ucode_info *uc = 1684 (struct wpi_ucode_info *)(desc + 1); 1685 1686 /* the microcontroller is ready */ 1687 DPRINTF(("microcode alive notification version %x " 1688 "alive %x\n", le32toh(uc->version), 1689 le32toh(uc->valid))); 1690 1691 if (le32toh(uc->valid) != 1) { 1692 device_printf(sc->sc_dev, 1693 "microcontroller initialization failed\n"); 1694 wpi_stop_locked(sc); 1695 } 1696 break; 1697 } 1698 case WPI_STATE_CHANGED: 1699 { 1700 uint32_t *status = (uint32_t *)(desc + 1); 1701 1702 /* enabled/disabled notification */ 1703 DPRINTF(("state changed to %x\n", le32toh(*status))); 1704 1705 if (le32toh(*status) & 1) { 1706 device_printf(sc->sc_dev, 1707 "Radio transmitter is switched off\n"); 1708 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1709 ifp->if_flags &= ~IFF_RUNNING; 1710 /* Disable firmware commands */ 1711 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1712 } 1713 break; 1714 } 1715 case WPI_START_SCAN: 1716 { 1717 #ifdef WPI_DEBUG 1718 struct wpi_start_scan *scan = 1719 (struct wpi_start_scan *)(desc + 1); 1720 #endif 1721 1722 DPRINTFN(WPI_DEBUG_SCANNING, 1723 ("scanning channel %d status %x\n", 1724 scan->chan, le32toh(scan->status))); 1725 break; 1726 } 1727 case WPI_STOP_SCAN: 1728 { 1729 #ifdef WPI_DEBUG 1730 struct wpi_stop_scan *scan = 1731 (struct wpi_stop_scan *)(desc + 1); 1732 #endif 1733 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1734 1735 DPRINTFN(WPI_DEBUG_SCANNING, 1736 ("scan finished nchan=%d status=%d chan=%d\n", 1737 scan->nchan, scan->status, scan->chan)); 1738 1739 sc->sc_scan_timer = 0; 1740 ieee80211_scan_next(vap); 1741 break; 1742 } 1743 case WPI_MISSED_BEACON: 1744 { 1745 struct wpi_missed_beacon *beacon = 1746 (struct wpi_missed_beacon *)(desc + 1); 1747 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1748 1749 if (le32toh(beacon->consecutive) >= 1750 vap->iv_bmissthreshold) { 1751 DPRINTF(("Beacon miss: %u >= %u\n", 1752 le32toh(beacon->consecutive), 1753 vap->iv_bmissthreshold)); 1754 ieee80211_beacon_miss(ic); 1755 } 1756 break; 1757 } 1758 } 1759 1760 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1761 } 1762 1763 /* tell the firmware what we have processed */ 1764 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1765 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1766 } 1767 1768 static void 1769 wpi_intr(void *arg) 1770 { 1771 struct wpi_softc *sc = arg; 1772 uint32_t r; 1773 1774 r = WPI_READ(sc, WPI_INTR); 1775 if (r == 0 || r == 0xffffffff) { 1776 return; 1777 } 1778 1779 /* disable interrupts */ 1780 WPI_WRITE(sc, WPI_MASK, 0); 1781 /* ack interrupts */ 1782 WPI_WRITE(sc, WPI_INTR, r); 1783 1784 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1785 struct ifnet *ifp = sc->sc_ifp; 1786 struct ieee80211com *ic = ifp->if_l2com; 1787 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1788 1789 device_printf(sc->sc_dev, "fatal firmware error\n"); 1790 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1791 "(Hardware Error)")); 1792 if (vap != NULL) 1793 ieee80211_cancel_scan(vap); 1794 ieee80211_runtask(ic, &sc->sc_restarttask); 1795 sc->flags &= ~WPI_FLAG_BUSY; 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 } 1810 1811 static uint8_t 1812 wpi_plcp_signal(int rate) 1813 { 1814 switch (rate) { 1815 /* CCK rates (returned values are device-dependent) */ 1816 case 2: return 10; 1817 case 4: return 20; 1818 case 11: return 55; 1819 case 22: return 110; 1820 1821 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1822 /* R1-R4 (ral/ural is R4-R1) */ 1823 case 12: return 0xd; 1824 case 18: return 0xf; 1825 case 24: return 0x5; 1826 case 36: return 0x7; 1827 case 48: return 0x9; 1828 case 72: return 0xb; 1829 case 96: return 0x1; 1830 case 108: return 0x3; 1831 1832 /* unsupported rates (should not get there) */ 1833 default: return 0; 1834 } 1835 } 1836 1837 /* quickly determine if a given rate is CCK or OFDM */ 1838 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1839 1840 /* 1841 * Construct the data packet for a transmit buffer and acutally put 1842 * the buffer onto the transmit ring, kicking the card to process the 1843 * the buffer. 1844 */ 1845 static int 1846 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1847 int ac) 1848 { 1849 struct ieee80211vap *vap = ni->ni_vap; 1850 struct ifnet *ifp = sc->sc_ifp; 1851 struct ieee80211com *ic = ifp->if_l2com; 1852 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1853 struct wpi_tx_ring *ring = &sc->txq[ac]; 1854 struct wpi_tx_desc *desc; 1855 struct wpi_tx_data *data; 1856 struct wpi_tx_cmd *cmd; 1857 struct wpi_cmd_data *tx; 1858 struct ieee80211_frame *wh; 1859 const struct ieee80211_txparam *tp; 1860 struct ieee80211_key *k; 1861 struct mbuf *mnew; 1862 int i, error, nsegs, rate, hdrlen, ismcast; 1863 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1864 1865 desc = &ring->desc[ring->cur]; 1866 data = &ring->data[ring->cur]; 1867 1868 wh = mtod(m0, struct ieee80211_frame *); 1869 1870 hdrlen = ieee80211_hdrsize(wh); 1871 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1872 1873 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1874 k = ieee80211_crypto_encap(ni, m0); 1875 if (k == NULL) { 1876 m_freem(m0); 1877 return ENOBUFS; 1878 } 1879 /* packet header may have moved, reset our local pointer */ 1880 wh = mtod(m0, struct ieee80211_frame *); 1881 } 1882 1883 cmd = &ring->cmd[ring->cur]; 1884 cmd->code = WPI_CMD_TX_DATA; 1885 cmd->flags = 0; 1886 cmd->qid = ring->qid; 1887 cmd->idx = ring->cur; 1888 1889 tx = (struct wpi_cmd_data *)cmd->data; 1890 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1891 tx->timeout = htole16(0); 1892 tx->ofdm_mask = 0xff; 1893 tx->cck_mask = 0x0f; 1894 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1895 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1896 tx->len = htole16(m0->m_pkthdr.len); 1897 1898 if (!ismcast) { 1899 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 1900 !cap->cap_wmeParams[ac].wmep_noackPolicy) 1901 tx->flags |= htole32(WPI_TX_NEED_ACK); 1902 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 1903 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 1904 tx->rts_ntries = 7; 1905 } 1906 } 1907 /* pick a rate */ 1908 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1909 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 1910 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1911 /* tell h/w to set timestamp in probe responses */ 1912 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1913 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 1914 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 1915 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 1916 tx->timeout = htole16(3); 1917 else 1918 tx->timeout = htole16(2); 1919 rate = tp->mgmtrate; 1920 } else if (ismcast) { 1921 rate = tp->mcastrate; 1922 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1923 rate = tp->ucastrate; 1924 } else { 1925 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1926 rate = ni->ni_txrate; 1927 } 1928 tx->rate = wpi_plcp_signal(rate); 1929 1930 /* be very persistant at sending frames out */ 1931 #if 0 1932 tx->data_ntries = tp->maxretry; 1933 #else 1934 tx->data_ntries = 30; /* XXX way too high */ 1935 #endif 1936 1937 if (ieee80211_radiotap_active_vap(vap)) { 1938 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 1939 tap->wt_flags = 0; 1940 tap->wt_rate = rate; 1941 tap->wt_hwqueue = ac; 1942 if (wh->i_fc[1] & IEEE80211_FC1_WEP) 1943 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 1944 1945 ieee80211_radiotap_tx(vap, m0); 1946 } 1947 1948 /* save and trim IEEE802.11 header */ 1949 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 1950 m_adj(m0, hdrlen); 1951 1952 error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map, m0, segs, 1953 1, &nsegs, BUS_DMA_NOWAIT); 1954 if (error != 0 && error != EFBIG) { 1955 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1956 error); 1957 m_freem(m0); 1958 return error; 1959 } 1960 if (error != 0) { 1961 /* XXX use m_collapse */ 1962 mnew = m_defrag(m0, MB_DONTWAIT); 1963 if (mnew == NULL) { 1964 device_printf(sc->sc_dev, 1965 "could not defragment mbuf\n"); 1966 m_freem(m0); 1967 return ENOBUFS; 1968 } 1969 m0 = mnew; 1970 1971 error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map, 1972 m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 1973 if (error != 0) { 1974 device_printf(sc->sc_dev, 1975 "could not map mbuf (error %d)\n", error); 1976 m_freem(m0); 1977 return error; 1978 } 1979 } 1980 1981 data->m = m0; 1982 data->ni = ni; 1983 1984 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 1985 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 1986 1987 /* first scatter/gather segment is used by the tx data command */ 1988 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 1989 (1 + nsegs) << 24); 1990 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 1991 ring->cur * sizeof (struct wpi_tx_cmd)); 1992 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 1993 for (i = 1; i <= nsegs; i++) { 1994 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 1995 desc->segs[i].len = htole32(segs[i - 1].ds_len); 1996 } 1997 1998 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1999 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2000 BUS_DMASYNC_PREWRITE); 2001 2002 ring->queued++; 2003 2004 /* kick ring */ 2005 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2006 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2007 2008 return 0; 2009 } 2010 2011 /** 2012 * Process data waiting to be sent on the IFNET output queue 2013 */ 2014 static void 2015 wpi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 2016 { 2017 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 2018 wpi_start_locked(ifp); 2019 } 2020 2021 static void 2022 wpi_start_locked(struct ifnet *ifp) 2023 { 2024 struct wpi_softc *sc = ifp->if_softc; 2025 struct ieee80211_node *ni; 2026 struct mbuf *m; 2027 int ac; 2028 2029 if ((ifp->if_flags & IFF_RUNNING) == 0) { 2030 ifq_purge(&ifp->if_snd); 2031 return; 2032 } 2033 2034 for (;;) { 2035 m = ifq_dequeue(&ifp->if_snd, NULL); 2036 if (m == NULL) 2037 break; 2038 ac = M_WME_GETAC(m); 2039 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2040 /* there is no place left in this ring */ 2041 /* 2042 * XXX: we CANNOT do it this way. If something 2043 * is prepended already, this is going to blow. 2044 */ 2045 ifq_set_oactive(&ifp->if_snd); 2046 ifq_prepend(&ifp->if_snd, m); 2047 break; 2048 } 2049 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2050 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2051 ieee80211_free_node(ni); 2052 IFNET_STAT_INC(ifp, oerrors, 1); 2053 break; 2054 } 2055 sc->sc_tx_timer = 5; 2056 } 2057 } 2058 2059 static int 2060 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2061 const struct ieee80211_bpf_params *params) 2062 { 2063 struct ieee80211com *ic = ni->ni_ic; 2064 struct ifnet *ifp = ic->ic_ifp; 2065 struct wpi_softc *sc = ifp->if_softc; 2066 2067 /* prevent management frames from being sent if we're not ready */ 2068 if (!(ifp->if_flags & IFF_RUNNING)) { 2069 m_freem(m); 2070 ieee80211_free_node(ni); 2071 return ENETDOWN; 2072 } 2073 2074 /* management frames go into ring 0 */ 2075 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2076 ifq_set_oactive(&ifp->if_snd); 2077 m_freem(m); 2078 ieee80211_free_node(ni); 2079 return ENOBUFS; /* XXX */ 2080 } 2081 2082 IFNET_STAT_INC(ifp, opackets, 1); 2083 if (wpi_tx_data(sc, m, ni, 0) != 0) 2084 goto bad; 2085 sc->sc_tx_timer = 5; 2086 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc); 2087 2088 return 0; 2089 bad: 2090 IFNET_STAT_INC(ifp, oerrors, 1); 2091 ieee80211_free_node(ni); 2092 return EIO; /* XXX */ 2093 } 2094 2095 static int 2096 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cred) 2097 { 2098 struct wpi_softc *sc = ifp->if_softc; 2099 struct ieee80211com *ic = ifp->if_l2com; 2100 struct ifreq *ifr = (struct ifreq *) data; 2101 int error = 0, startall = 0; 2102 2103 switch (cmd) { 2104 case SIOCSIFFLAGS: 2105 if ((ifp->if_flags & IFF_UP)) { 2106 if (!(ifp->if_flags & IFF_RUNNING)) { 2107 wpi_init_locked(sc, 0); 2108 startall = 1; 2109 } 2110 } else if ((ifp->if_flags & IFF_RUNNING) || 2111 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2112 wpi_stop_locked(sc); 2113 if (startall) 2114 ieee80211_start_all(ic); 2115 break; 2116 case SIOCGIFMEDIA: 2117 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2118 break; 2119 case SIOCGIFADDR: 2120 error = ether_ioctl(ifp, cmd, data); 2121 break; 2122 default: 2123 error = EINVAL; 2124 break; 2125 } 2126 return error; 2127 } 2128 2129 /* 2130 * Extract various information from EEPROM. 2131 */ 2132 static void 2133 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2134 { 2135 int i; 2136 2137 /* read the hardware capabilities, revision and SKU type */ 2138 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2139 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2140 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2141 2142 /* read the regulatory domain */ 2143 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2144 2145 /* read in the hw MAC address */ 2146 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2147 2148 /* read the list of authorized channels */ 2149 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2150 wpi_read_eeprom_channels(sc,i); 2151 2152 /* read the power level calibration info for each group */ 2153 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2154 wpi_read_eeprom_group(sc,i); 2155 } 2156 2157 /* 2158 * Send a command to the firmware. 2159 */ 2160 static int 2161 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2162 { 2163 struct wpi_tx_ring *ring = &sc->cmdq; 2164 struct wpi_tx_desc *desc; 2165 struct wpi_tx_cmd *cmd; 2166 2167 #ifdef WPI_DEBUG 2168 if (!async) { 2169 wlan_assert_serialized(); 2170 } 2171 #endif 2172 2173 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2174 async)); 2175 2176 if (sc->flags & WPI_FLAG_BUSY) { 2177 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2178 __func__, code); 2179 return EAGAIN; 2180 } 2181 sc->flags|= WPI_FLAG_BUSY; 2182 2183 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2184 code, size)); 2185 2186 desc = &ring->desc[ring->cur]; 2187 cmd = &ring->cmd[ring->cur]; 2188 2189 cmd->code = code; 2190 cmd->flags = 0; 2191 cmd->qid = ring->qid; 2192 cmd->idx = ring->cur; 2193 memcpy(cmd->data, buf, size); 2194 2195 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2196 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2197 ring->cur * sizeof (struct wpi_tx_cmd)); 2198 desc->segs[0].len = htole32(4 + size); 2199 2200 /* kick cmd ring */ 2201 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2202 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2203 2204 if (async) { 2205 sc->flags &= ~ WPI_FLAG_BUSY; 2206 return 0; 2207 } 2208 2209 return zsleep(cmd, &wlan_global_serializer, 0, "wpicmd", hz); 2210 } 2211 2212 static int 2213 wpi_wme_update(struct ieee80211com *ic) 2214 { 2215 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2216 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2217 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2218 const struct wmeParams *wmep; 2219 struct wpi_wme_setup wme; 2220 int ac; 2221 2222 /* don't override default WME values if WME is not actually enabled */ 2223 if (!(ic->ic_flags & IEEE80211_F_WME)) 2224 return 0; 2225 2226 wme.flags = 0; 2227 for (ac = 0; ac < WME_NUM_AC; ac++) { 2228 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2229 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2230 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2231 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2232 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2233 2234 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2235 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2236 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2237 } 2238 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2239 #undef WPI_USEC 2240 #undef WPI_EXP2 2241 } 2242 2243 /* 2244 * Configure h/w multi-rate retries. 2245 */ 2246 static int 2247 wpi_mrr_setup(struct wpi_softc *sc) 2248 { 2249 struct ifnet *ifp = sc->sc_ifp; 2250 struct ieee80211com *ic = ifp->if_l2com; 2251 struct wpi_mrr_setup mrr; 2252 int i, error; 2253 2254 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2255 2256 /* CCK rates (not used with 802.11a) */ 2257 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2258 mrr.rates[i].flags = 0; 2259 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2260 /* fallback to the immediate lower CCK rate (if any) */ 2261 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2262 /* try one time at this rate before falling back to "next" */ 2263 mrr.rates[i].ntries = 1; 2264 } 2265 2266 /* OFDM rates (not used with 802.11b) */ 2267 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2268 mrr.rates[i].flags = 0; 2269 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2270 /* fallback to the immediate lower OFDM rate (if any) */ 2271 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2272 mrr.rates[i].next = (i == WPI_OFDM6) ? 2273 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2274 WPI_OFDM6 : WPI_CCK2) : 2275 i - 1; 2276 /* try one time at this rate before falling back to "next" */ 2277 mrr.rates[i].ntries = 1; 2278 } 2279 2280 /* setup MRR for control frames */ 2281 mrr.which = htole32(WPI_MRR_CTL); 2282 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2283 if (error != 0) { 2284 device_printf(sc->sc_dev, 2285 "could not setup MRR for control frames\n"); 2286 return error; 2287 } 2288 2289 /* setup MRR for data frames */ 2290 mrr.which = htole32(WPI_MRR_DATA); 2291 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2292 if (error != 0) { 2293 device_printf(sc->sc_dev, 2294 "could not setup MRR for data frames\n"); 2295 return error; 2296 } 2297 2298 return 0; 2299 } 2300 2301 static void 2302 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2303 { 2304 struct wpi_cmd_led led; 2305 2306 led.which = which; 2307 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2308 led.off = off; 2309 led.on = on; 2310 2311 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2312 } 2313 2314 static void 2315 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2316 { 2317 struct wpi_cmd_tsf tsf; 2318 uint64_t val, mod; 2319 2320 memset(&tsf, 0, sizeof tsf); 2321 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2322 tsf.bintval = htole16(ni->ni_intval); 2323 tsf.lintval = htole16(10); 2324 2325 /* compute remaining time until next beacon */ 2326 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2327 mod = le64toh(tsf.tstamp) % val; 2328 tsf.binitval = htole32((uint32_t)(val - mod)); 2329 2330 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2331 device_printf(sc->sc_dev, "could not enable TSF\n"); 2332 } 2333 2334 #if 0 2335 /* 2336 * Build a beacon frame that the firmware will broadcast periodically in 2337 * IBSS or HostAP modes. 2338 */ 2339 static int 2340 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2341 { 2342 struct ifnet *ifp = sc->sc_ifp; 2343 struct ieee80211com *ic = ifp->if_l2com; 2344 struct wpi_tx_ring *ring = &sc->cmdq; 2345 struct wpi_tx_desc *desc; 2346 struct wpi_tx_data *data; 2347 struct wpi_tx_cmd *cmd; 2348 struct wpi_cmd_beacon *bcn; 2349 struct ieee80211_beacon_offsets bo; 2350 struct mbuf *m0; 2351 bus_addr_t physaddr; 2352 int error; 2353 2354 desc = &ring->desc[ring->cur]; 2355 data = &ring->data[ring->cur]; 2356 2357 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2358 if (m0 == NULL) { 2359 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2360 return ENOMEM; 2361 } 2362 2363 cmd = &ring->cmd[ring->cur]; 2364 cmd->code = WPI_CMD_SET_BEACON; 2365 cmd->flags = 0; 2366 cmd->qid = ring->qid; 2367 cmd->idx = ring->cur; 2368 2369 bcn = (struct wpi_cmd_beacon *)cmd->data; 2370 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2371 bcn->id = WPI_ID_BROADCAST; 2372 bcn->ofdm_mask = 0xff; 2373 bcn->cck_mask = 0x0f; 2374 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2375 bcn->len = htole16(m0->m_pkthdr.len); 2376 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2377 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2378 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2379 2380 /* save and trim IEEE802.11 header */ 2381 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2382 m_adj(m0, sizeof (struct ieee80211_frame)); 2383 2384 /* assume beacon frame is contiguous */ 2385 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2386 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2387 if (error != 0) { 2388 device_printf(sc->sc_dev, "could not map beacon\n"); 2389 m_freem(m0); 2390 return error; 2391 } 2392 2393 data->m = m0; 2394 2395 /* first scatter/gather segment is used by the beacon command */ 2396 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2397 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2398 ring->cur * sizeof (struct wpi_tx_cmd)); 2399 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2400 desc->segs[1].addr = htole32(physaddr); 2401 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2402 2403 /* kick cmd ring */ 2404 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2405 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2406 2407 return 0; 2408 } 2409 #endif 2410 2411 static int 2412 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2413 { 2414 struct ieee80211com *ic = vap->iv_ic; 2415 struct ieee80211_node *ni; 2416 struct wpi_node_info node; 2417 int error; 2418 2419 2420 /* update adapter's configuration */ 2421 sc->config.associd = 0; 2422 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2423 ni = ieee80211_ref_node(vap->iv_bss); 2424 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2425 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2426 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2427 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2428 WPI_CONFIG_24GHZ); 2429 } 2430 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2431 sc->config.cck_mask = 0; 2432 sc->config.ofdm_mask = 0x15; 2433 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2434 sc->config.cck_mask = 0x03; 2435 sc->config.ofdm_mask = 0; 2436 } else { 2437 /* XXX assume 802.11b/g */ 2438 sc->config.cck_mask = 0x0f; 2439 sc->config.ofdm_mask = 0x15; 2440 } 2441 2442 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2443 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2444 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2445 sizeof (struct wpi_config), 1); 2446 if (error != 0) { 2447 device_printf(sc->sc_dev, "could not configure\n"); 2448 ieee80211_free_node(ni); 2449 return error; 2450 } 2451 2452 /* configuration has changed, set Tx power accordingly */ 2453 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2454 device_printf(sc->sc_dev, "could not set Tx power\n"); 2455 ieee80211_free_node(ni); 2456 return error; 2457 } 2458 2459 /* add default node */ 2460 memset(&node, 0, sizeof node); 2461 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2462 ieee80211_free_node(ni); 2463 node.id = WPI_ID_BSS; 2464 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2465 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2466 node.action = htole32(WPI_ACTION_SET_RATE); 2467 node.antenna = WPI_ANTENNA_BOTH; 2468 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2469 if (error != 0) 2470 device_printf(sc->sc_dev, "could not add BSS node\n"); 2471 2472 return (error); 2473 } 2474 2475 static int 2476 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2477 { 2478 struct ieee80211com *ic = vap->iv_ic; 2479 struct ieee80211_node *ni; 2480 int error; 2481 2482 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2483 /* link LED blinks while monitoring */ 2484 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2485 return 0; 2486 } 2487 2488 ni = ieee80211_ref_node(vap->iv_bss); 2489 wpi_enable_tsf(sc, ni); 2490 2491 /* update adapter's configuration */ 2492 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2493 /* short preamble/slot time are negotiated when associating */ 2494 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2495 WPI_CONFIG_SHSLOT); 2496 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2497 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2498 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2499 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2500 sc->config.filter |= htole32(WPI_FILTER_BSS); 2501 2502 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2503 2504 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2505 sc->config.flags)); 2506 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2507 wpi_config), 1); 2508 if (error != 0) { 2509 device_printf(sc->sc_dev, "could not update configuration\n"); 2510 ieee80211_free_node(ni); 2511 return error; 2512 } 2513 2514 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2515 ieee80211_free_node(ni); 2516 if (error != 0) { 2517 device_printf(sc->sc_dev, "could set txpower\n"); 2518 return error; 2519 } 2520 2521 /* link LED always on while associated */ 2522 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2523 2524 /* start automatic rate control timer */ 2525 callout_reset(&sc->calib_to_callout, 60*hz, wpi_calib_timeout_callout, sc); 2526 2527 return (error); 2528 } 2529 2530 /* 2531 * Send a scan request to the firmware. Since this command is huge, we map it 2532 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2533 * much of this code is similar to that in wpi_cmd but because we must manually 2534 * construct the probe & channels, we duplicate what's needed here. XXX In the 2535 * future, this function should be modified to use wpi_cmd to help cleanup the 2536 * code base. 2537 */ 2538 static int 2539 wpi_scan(struct wpi_softc *sc) 2540 { 2541 struct ifnet *ifp = sc->sc_ifp; 2542 struct ieee80211com *ic = ifp->if_l2com; 2543 struct ieee80211_scan_state *ss = ic->ic_scan; 2544 struct wpi_tx_ring *ring = &sc->cmdq; 2545 struct wpi_tx_desc *desc; 2546 struct wpi_tx_data *data; 2547 struct wpi_tx_cmd *cmd; 2548 struct wpi_scan_hdr *hdr; 2549 struct wpi_scan_chan *chan; 2550 struct ieee80211_frame *wh; 2551 struct ieee80211_rateset *rs; 2552 struct ieee80211_channel *c; 2553 enum ieee80211_phymode mode; 2554 uint8_t *frm; 2555 int nrates, pktlen, error, i, nssid; 2556 bus_addr_t physaddr; 2557 2558 desc = &ring->desc[ring->cur]; 2559 data = &ring->data[ring->cur]; 2560 2561 data->m = m_getjcl(MB_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 2562 if (data->m == NULL) { 2563 device_printf(sc->sc_dev, 2564 "could not allocate mbuf for scan command\n"); 2565 return ENOMEM; 2566 } 2567 2568 cmd = mtod(data->m, struct wpi_tx_cmd *); 2569 cmd->code = WPI_CMD_SCAN; 2570 cmd->flags = 0; 2571 cmd->qid = ring->qid; 2572 cmd->idx = ring->cur; 2573 2574 hdr = (struct wpi_scan_hdr *)cmd->data; 2575 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2576 2577 /* 2578 * Move to the next channel if no packets are received within 5 msecs 2579 * after sending the probe request (this helps to reduce the duration 2580 * of active scans). 2581 */ 2582 hdr->quiet = htole16(5); 2583 hdr->threshold = htole16(1); 2584 2585 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2586 /* send probe requests at 6Mbps */ 2587 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2588 2589 /* Enable crc checking */ 2590 hdr->promotion = htole16(1); 2591 } else { 2592 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2593 /* send probe requests at 1Mbps */ 2594 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2595 } 2596 hdr->tx.id = WPI_ID_BROADCAST; 2597 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2598 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2599 2600 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2601 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2602 for (i = 0; i < nssid; i++) { 2603 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2604 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2605 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2606 hdr->scan_essids[i].esslen); 2607 #ifdef WPI_DEBUG 2608 if (wpi_debug & WPI_DEBUG_SCANNING) { 2609 kprintf("Scanning Essid: "); 2610 ieee80211_print_essid(hdr->scan_essids[i].essid, 2611 hdr->scan_essids[i].esslen); 2612 kprintf("\n"); 2613 } 2614 #endif 2615 } 2616 2617 /* 2618 * Build a probe request frame. Most of the following code is a 2619 * copy & paste of what is done in net80211. 2620 */ 2621 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2622 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2623 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2624 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2625 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2626 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2627 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2628 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2629 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2630 2631 frm = (uint8_t *)(wh + 1); 2632 2633 /* add essid IE, the hardware will fill this in for us */ 2634 *frm++ = IEEE80211_ELEMID_SSID; 2635 *frm++ = 0; 2636 2637 mode = ieee80211_chan2mode(ic->ic_curchan); 2638 rs = &ic->ic_sup_rates[mode]; 2639 2640 /* add supported rates IE */ 2641 *frm++ = IEEE80211_ELEMID_RATES; 2642 nrates = rs->rs_nrates; 2643 if (nrates > IEEE80211_RATE_SIZE) 2644 nrates = IEEE80211_RATE_SIZE; 2645 *frm++ = nrates; 2646 memcpy(frm, rs->rs_rates, nrates); 2647 frm += nrates; 2648 2649 /* add supported xrates IE */ 2650 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2651 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2652 *frm++ = IEEE80211_ELEMID_XRATES; 2653 *frm++ = nrates; 2654 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2655 frm += nrates; 2656 } 2657 2658 /* setup length of probe request */ 2659 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2660 2661 /* 2662 * Construct information about the channel that we 2663 * want to scan. The firmware expects this to be directly 2664 * after the scan probe request 2665 */ 2666 c = ic->ic_curchan; 2667 chan = (struct wpi_scan_chan *)frm; 2668 chan->chan = ieee80211_chan2ieee(ic, c); 2669 chan->flags = 0; 2670 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2671 chan->flags |= WPI_CHAN_ACTIVE; 2672 if (nssid != 0) 2673 chan->flags |= WPI_CHAN_DIRECT; 2674 } 2675 chan->gain_dsp = 0x6e; /* Default level */ 2676 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2677 chan->active = htole16(10); 2678 chan->passive = htole16(ss->ss_maxdwell); 2679 chan->gain_radio = 0x3b; 2680 } else { 2681 chan->active = htole16(20); 2682 chan->passive = htole16(ss->ss_maxdwell); 2683 chan->gain_radio = 0x28; 2684 } 2685 2686 DPRINTFN(WPI_DEBUG_SCANNING, 2687 ("Scanning %u Passive: %d\n", 2688 chan->chan, 2689 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2690 2691 hdr->nchan++; 2692 chan++; 2693 2694 frm += sizeof (struct wpi_scan_chan); 2695 #if 0 2696 // XXX All Channels.... 2697 for (c = &ic->ic_channels[1]; 2698 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2699 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2700 continue; 2701 2702 chan->chan = ieee80211_chan2ieee(ic, c); 2703 chan->flags = 0; 2704 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2705 chan->flags |= WPI_CHAN_ACTIVE; 2706 if (ic->ic_des_ssid[0].len != 0) 2707 chan->flags |= WPI_CHAN_DIRECT; 2708 } 2709 chan->gain_dsp = 0x6e; /* Default level */ 2710 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2711 chan->active = htole16(10); 2712 chan->passive = htole16(110); 2713 chan->gain_radio = 0x3b; 2714 } else { 2715 chan->active = htole16(20); 2716 chan->passive = htole16(120); 2717 chan->gain_radio = 0x28; 2718 } 2719 2720 DPRINTFN(WPI_DEBUG_SCANNING, 2721 ("Scanning %u Passive: %d\n", 2722 chan->chan, 2723 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2724 2725 hdr->nchan++; 2726 chan++; 2727 2728 frm += sizeof (struct wpi_scan_chan); 2729 } 2730 #endif 2731 2732 hdr->len = htole16(frm - (uint8_t *)hdr); 2733 pktlen = frm - (uint8_t *)cmd; 2734 2735 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2736 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2737 if (error != 0) { 2738 device_printf(sc->sc_dev, "could not map scan command\n"); 2739 m_freem(data->m); 2740 data->m = NULL; 2741 return error; 2742 } 2743 2744 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2745 desc->segs[0].addr = htole32(physaddr); 2746 desc->segs[0].len = htole32(pktlen); 2747 2748 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2749 BUS_DMASYNC_PREWRITE); 2750 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2751 2752 /* kick cmd ring */ 2753 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2754 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2755 2756 sc->sc_scan_timer = 5; 2757 return 0; /* will be notified async. of failure/success */ 2758 } 2759 2760 /** 2761 * Configure the card to listen to a particular channel, this transisions the 2762 * card in to being able to receive frames from remote devices. 2763 */ 2764 static int 2765 wpi_config(struct wpi_softc *sc) 2766 { 2767 struct ifnet *ifp = sc->sc_ifp; 2768 struct ieee80211com *ic = ifp->if_l2com; 2769 struct wpi_power power; 2770 struct wpi_bluetooth bluetooth; 2771 struct wpi_node_info node; 2772 int error; 2773 2774 /* set power mode */ 2775 memset(&power, 0, sizeof power); 2776 power.flags = htole32(WPI_POWER_CAM|0x8); 2777 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2778 if (error != 0) { 2779 device_printf(sc->sc_dev, "could not set power mode\n"); 2780 return error; 2781 } 2782 2783 /* configure bluetooth coexistence */ 2784 memset(&bluetooth, 0, sizeof bluetooth); 2785 bluetooth.flags = 3; 2786 bluetooth.lead = 0xaa; 2787 bluetooth.kill = 1; 2788 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2789 0); 2790 if (error != 0) { 2791 device_printf(sc->sc_dev, 2792 "could not configure bluetooth coexistence\n"); 2793 return error; 2794 } 2795 2796 /* configure adapter */ 2797 memset(&sc->config, 0, sizeof (struct wpi_config)); 2798 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2799 /*set default channel*/ 2800 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2801 sc->config.flags = htole32(WPI_CONFIG_TSF); 2802 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2803 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2804 WPI_CONFIG_24GHZ); 2805 } 2806 sc->config.filter = 0; 2807 switch (ic->ic_opmode) { 2808 case IEEE80211_M_STA: 2809 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2810 sc->config.mode = WPI_MODE_STA; 2811 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2812 break; 2813 case IEEE80211_M_IBSS: 2814 case IEEE80211_M_AHDEMO: 2815 sc->config.mode = WPI_MODE_IBSS; 2816 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2817 WPI_FILTER_MULTICAST); 2818 break; 2819 case IEEE80211_M_HOSTAP: 2820 sc->config.mode = WPI_MODE_HOSTAP; 2821 break; 2822 case IEEE80211_M_MONITOR: 2823 sc->config.mode = WPI_MODE_MONITOR; 2824 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2825 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2826 break; 2827 default: 2828 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2829 return EINVAL; 2830 } 2831 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2832 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2833 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2834 sizeof (struct wpi_config), 0); 2835 if (error != 0) { 2836 device_printf(sc->sc_dev, "configure command failed\n"); 2837 return error; 2838 } 2839 2840 /* configuration has changed, set Tx power accordingly */ 2841 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2842 device_printf(sc->sc_dev, "could not set Tx power\n"); 2843 return error; 2844 } 2845 2846 /* add broadcast node */ 2847 memset(&node, 0, sizeof node); 2848 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2849 node.id = WPI_ID_BROADCAST; 2850 node.rate = wpi_plcp_signal(2); 2851 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2852 if (error != 0) { 2853 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2854 return error; 2855 } 2856 2857 /* Setup rate scalling */ 2858 error = wpi_mrr_setup(sc); 2859 if (error != 0) { 2860 device_printf(sc->sc_dev, "could not setup MRR\n"); 2861 return error; 2862 } 2863 2864 return 0; 2865 } 2866 2867 static void 2868 wpi_stop_master(struct wpi_softc *sc) 2869 { 2870 uint32_t tmp; 2871 int ntries; 2872 2873 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2874 2875 tmp = WPI_READ(sc, WPI_RESET); 2876 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2877 2878 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2879 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2880 return; /* already asleep */ 2881 2882 for (ntries = 0; ntries < 100; ntries++) { 2883 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2884 break; 2885 DELAY(10); 2886 } 2887 if (ntries == 100) { 2888 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2889 } 2890 } 2891 2892 static int 2893 wpi_power_up(struct wpi_softc *sc) 2894 { 2895 uint32_t tmp; 2896 int ntries; 2897 2898 wpi_mem_lock(sc); 2899 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2900 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2901 wpi_mem_unlock(sc); 2902 2903 for (ntries = 0; ntries < 5000; ntries++) { 2904 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2905 break; 2906 DELAY(10); 2907 } 2908 if (ntries == 5000) { 2909 device_printf(sc->sc_dev, 2910 "timeout waiting for NIC to power up\n"); 2911 return ETIMEDOUT; 2912 } 2913 return 0; 2914 } 2915 2916 static int 2917 wpi_reset(struct wpi_softc *sc) 2918 { 2919 uint32_t tmp; 2920 int ntries; 2921 2922 DPRINTFN(WPI_DEBUG_HW, 2923 ("Resetting the card - clearing any uploaded firmware\n")); 2924 2925 /* clear any pending interrupts */ 2926 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2927 2928 tmp = WPI_READ(sc, WPI_PLL_CTL); 2929 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2930 2931 tmp = WPI_READ(sc, WPI_CHICKEN); 2932 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2933 2934 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2935 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2936 2937 /* wait for clock stabilization */ 2938 for (ntries = 0; ntries < 25000; ntries++) { 2939 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2940 break; 2941 DELAY(10); 2942 } 2943 if (ntries == 25000) { 2944 device_printf(sc->sc_dev, 2945 "timeout waiting for clock stabilization\n"); 2946 return ETIMEDOUT; 2947 } 2948 2949 /* initialize EEPROM */ 2950 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2951 2952 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2953 device_printf(sc->sc_dev, "EEPROM not found\n"); 2954 return EIO; 2955 } 2956 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2957 2958 return 0; 2959 } 2960 2961 static void 2962 wpi_hw_config(struct wpi_softc *sc) 2963 { 2964 uint32_t rev, hw; 2965 2966 /* voodoo from the Linux "driver".. */ 2967 hw = WPI_READ(sc, WPI_HWCONFIG); 2968 2969 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2970 if ((rev & 0xc0) == 0x40) 2971 hw |= WPI_HW_ALM_MB; 2972 else if (!(rev & 0x80)) 2973 hw |= WPI_HW_ALM_MM; 2974 2975 if (sc->cap == 0x80) 2976 hw |= WPI_HW_SKU_MRC; 2977 2978 hw &= ~WPI_HW_REV_D; 2979 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2980 hw |= WPI_HW_REV_D; 2981 2982 if (sc->type > 1) 2983 hw |= WPI_HW_TYPE_B; 2984 2985 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2986 } 2987 2988 static void 2989 wpi_rfkill_resume(struct wpi_softc *sc) 2990 { 2991 struct ifnet *ifp = sc->sc_ifp; 2992 struct ieee80211com *ic = ifp->if_l2com; 2993 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2994 int ntries; 2995 2996 /* enable firmware again */ 2997 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 2998 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 2999 3000 /* wait for thermal sensors to calibrate */ 3001 for (ntries = 0; ntries < 1000; ntries++) { 3002 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3003 break; 3004 DELAY(10); 3005 } 3006 3007 if (ntries == 1000) { 3008 device_printf(sc->sc_dev, 3009 "timeout waiting for thermal calibration\n"); 3010 return; 3011 } 3012 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3013 3014 if (wpi_config(sc) != 0) { 3015 device_printf(sc->sc_dev, "device config failed\n"); 3016 return; 3017 } 3018 3019 ifq_clr_oactive(&ifp->if_snd); 3020 ifp->if_flags |= IFF_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_callout, hz, wpi_watchdog_callout, 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 ifq_clr_oactive(&ifp->if_snd); 3143 ifp->if_flags |= IFF_RUNNING; 3144 out: 3145 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, 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_init_locked(sc, 0); 3156 3157 if (ifp->if_flags & IFF_RUNNING) 3158 ieee80211_start_all(ic); /* start all vaps */ 3159 } 3160 3161 static void 3162 wpi_stop_locked(struct wpi_softc *sc) 3163 { 3164 struct ifnet *ifp = sc->sc_ifp; 3165 uint32_t tmp; 3166 int ac; 3167 3168 sc->sc_tx_timer = 0; 3169 sc->sc_scan_timer = 0; 3170 ifp->if_flags &= ~IFF_RUNNING; 3171 ifq_clr_oactive(&ifp->if_snd); 3172 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3173 callout_stop(&sc->watchdog_to_callout); 3174 callout_stop(&sc->calib_to_callout); 3175 3176 3177 /* disable interrupts */ 3178 WPI_WRITE(sc, WPI_MASK, 0); 3179 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3180 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3181 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3182 3183 wpi_mem_lock(sc); 3184 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3185 wpi_mem_unlock(sc); 3186 3187 /* reset all Tx rings */ 3188 for (ac = 0; ac < 4; ac++) 3189 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3190 wpi_reset_tx_ring(sc, &sc->cmdq); 3191 3192 /* reset Rx ring */ 3193 wpi_reset_rx_ring(sc, &sc->rxq); 3194 3195 wpi_mem_lock(sc); 3196 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3197 wpi_mem_unlock(sc); 3198 3199 DELAY(5); 3200 3201 wpi_stop_master(sc); 3202 3203 tmp = WPI_READ(sc, WPI_RESET); 3204 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3205 sc->flags &= ~WPI_FLAG_BUSY; 3206 } 3207 3208 static void 3209 wpi_stop(struct wpi_softc *sc) 3210 { 3211 wpi_stop_locked(sc); 3212 } 3213 3214 static void 3215 wpi_newassoc(struct ieee80211_node *ni, int isnew) 3216 { 3217 /* XXX move */ 3218 ieee80211_ratectl_node_init(ni); 3219 } 3220 3221 static void 3222 wpi_calib_timeout_callout(void *arg) 3223 { 3224 struct wpi_softc *sc = arg; 3225 struct ifnet *ifp = sc->sc_ifp; 3226 struct ieee80211com *ic = ifp->if_l2com; 3227 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3228 int temp; 3229 3230 if (vap->iv_state != IEEE80211_S_RUN) 3231 return; 3232 3233 /* update sensor data */ 3234 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3235 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3236 3237 wpi_power_calibration(sc, temp); 3238 3239 callout_reset(&sc->calib_to_callout, 60*hz, wpi_calib_timeout_callout, sc); 3240 } 3241 3242 /* 3243 * This function is called periodically (every 60 seconds) to adjust output 3244 * power to temperature changes. 3245 */ 3246 static void 3247 wpi_power_calibration(struct wpi_softc *sc, int temp) 3248 { 3249 struct ifnet *ifp = sc->sc_ifp; 3250 struct ieee80211com *ic = ifp->if_l2com; 3251 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3252 3253 /* sanity-check read value */ 3254 if (temp < -260 || temp > 25) { 3255 /* this can't be correct, ignore */ 3256 DPRINTFN(WPI_DEBUG_TEMP, 3257 ("out-of-range temperature reported: %d\n", temp)); 3258 return; 3259 } 3260 3261 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3262 3263 /* adjust Tx power if need be */ 3264 if (abs(temp - sc->temp) <= 6) 3265 return; 3266 3267 sc->temp = temp; 3268 3269 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3270 /* just warn, too bad for the automatic calibration... */ 3271 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3272 } 3273 } 3274 3275 /** 3276 * Read the eeprom to find out what channels are valid for the given 3277 * band and update net80211 with what we find. 3278 */ 3279 static void 3280 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3281 { 3282 struct ifnet *ifp = sc->sc_ifp; 3283 struct ieee80211com *ic = ifp->if_l2com; 3284 const struct wpi_chan_band *band = &wpi_bands[n]; 3285 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3286 struct ieee80211_channel *c; 3287 int chan, i, passive; 3288 3289 wpi_read_prom_data(sc, band->addr, channels, 3290 band->nchan * sizeof (struct wpi_eeprom_chan)); 3291 3292 for (i = 0; i < band->nchan; i++) { 3293 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3294 DPRINTFN(WPI_DEBUG_HW, 3295 ("Channel Not Valid: %d, band %d\n", 3296 band->chan[i],n)); 3297 continue; 3298 } 3299 3300 passive = 0; 3301 chan = band->chan[i]; 3302 c = &ic->ic_channels[ic->ic_nchans++]; 3303 3304 /* is active scan allowed on this channel? */ 3305 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3306 passive = IEEE80211_CHAN_PASSIVE; 3307 } 3308 3309 if (n == 0) { /* 2GHz band */ 3310 c->ic_ieee = chan; 3311 c->ic_freq = ieee80211_ieee2mhz(chan, 3312 IEEE80211_CHAN_2GHZ); 3313 c->ic_flags = IEEE80211_CHAN_B | passive; 3314 3315 c = &ic->ic_channels[ic->ic_nchans++]; 3316 c->ic_ieee = chan; 3317 c->ic_freq = ieee80211_ieee2mhz(chan, 3318 IEEE80211_CHAN_2GHZ); 3319 c->ic_flags = IEEE80211_CHAN_G | passive; 3320 3321 } else { /* 5GHz band */ 3322 /* 3323 * Some 3945ABG adapters support channels 7, 8, 11 3324 * and 12 in the 2GHz *and* 5GHz bands. 3325 * Because of limitations in our net80211(9) stack, 3326 * we can't support these channels in 5GHz band. 3327 * XXX not true; just need to map to proper frequency 3328 */ 3329 if (chan <= 14) 3330 continue; 3331 3332 c->ic_ieee = chan; 3333 c->ic_freq = ieee80211_ieee2mhz(chan, 3334 IEEE80211_CHAN_5GHZ); 3335 c->ic_flags = IEEE80211_CHAN_A | passive; 3336 } 3337 3338 /* save maximum allowed power for this channel */ 3339 sc->maxpwr[chan] = channels[i].maxpwr; 3340 3341 #if 0 3342 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3343 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3344 //ic->ic_channels[chan].ic_minpower... 3345 //ic->ic_channels[chan].ic_maxregtxpower... 3346 #endif 3347 3348 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3349 " passive=%d, offset %d\n", chan, c->ic_freq, 3350 channels[i].flags, sc->maxpwr[chan], 3351 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3352 ic->ic_nchans)); 3353 } 3354 } 3355 3356 static void 3357 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3358 { 3359 struct wpi_power_group *group = &sc->groups[n]; 3360 struct wpi_eeprom_group rgroup; 3361 int i; 3362 3363 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3364 sizeof rgroup); 3365 3366 /* save power group information */ 3367 group->chan = rgroup.chan; 3368 group->maxpwr = rgroup.maxpwr; 3369 /* temperature at which the samples were taken */ 3370 group->temp = (int16_t)le16toh(rgroup.temp); 3371 3372 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3373 group->chan, group->maxpwr, group->temp)); 3374 3375 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3376 group->samples[i].index = rgroup.samples[i].index; 3377 group->samples[i].power = rgroup.samples[i].power; 3378 3379 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3380 group->samples[i].index, group->samples[i].power)); 3381 } 3382 } 3383 3384 /* 3385 * Update Tx power to match what is defined for channel `c'. 3386 */ 3387 static int 3388 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3389 { 3390 struct ifnet *ifp = sc->sc_ifp; 3391 struct ieee80211com *ic = ifp->if_l2com; 3392 struct wpi_power_group *group; 3393 struct wpi_cmd_txpower txpower; 3394 u_int chan; 3395 int i; 3396 3397 /* get channel number */ 3398 chan = ieee80211_chan2ieee(ic, c); 3399 3400 /* find the power group to which this channel belongs */ 3401 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3402 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3403 if (chan <= group->chan) 3404 break; 3405 } else 3406 group = &sc->groups[0]; 3407 3408 memset(&txpower, 0, sizeof txpower); 3409 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3410 txpower.channel = htole16(chan); 3411 3412 /* set Tx power for all OFDM and CCK rates */ 3413 for (i = 0; i <= 11 ; i++) { 3414 /* retrieve Tx power for this channel/rate combination */ 3415 int idx = wpi_get_power_index(sc, group, c, 3416 wpi_ridx_to_rate[i]); 3417 3418 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3419 3420 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3421 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3422 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3423 } else { 3424 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3425 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3426 } 3427 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3428 chan, wpi_ridx_to_rate[i], idx)); 3429 } 3430 3431 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3432 } 3433 3434 /* 3435 * Determine Tx power index for a given channel/rate combination. 3436 * This takes into account the regulatory information from EEPROM and the 3437 * current temperature. 3438 */ 3439 static int 3440 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3441 struct ieee80211_channel *c, int rate) 3442 { 3443 /* fixed-point arithmetic division using a n-bit fractional part */ 3444 #define fdivround(a, b, n) \ 3445 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3446 3447 /* linear interpolation */ 3448 #define interpolate(x, x1, y1, x2, y2, n) \ 3449 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3450 3451 struct ifnet *ifp = sc->sc_ifp; 3452 struct ieee80211com *ic = ifp->if_l2com; 3453 struct wpi_power_sample *sample; 3454 int pwr, idx; 3455 u_int chan; 3456 3457 /* get channel number */ 3458 chan = ieee80211_chan2ieee(ic, c); 3459 3460 /* default power is group's maximum power - 3dB */ 3461 pwr = group->maxpwr / 2; 3462 3463 /* decrease power for highest OFDM rates to reduce distortion */ 3464 switch (rate) { 3465 case 72: /* 36Mb/s */ 3466 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3467 break; 3468 case 96: /* 48Mb/s */ 3469 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3470 break; 3471 case 108: /* 54Mb/s */ 3472 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3473 break; 3474 } 3475 3476 /* never exceed channel's maximum allowed Tx power */ 3477 pwr = min(pwr, sc->maxpwr[chan]); 3478 3479 /* retrieve power index into gain tables from samples */ 3480 for (sample = group->samples; sample < &group->samples[3]; sample++) 3481 if (pwr > sample[1].power) 3482 break; 3483 /* fixed-point linear interpolation using a 19-bit fractional part */ 3484 idx = interpolate(pwr, sample[0].power, sample[0].index, 3485 sample[1].power, sample[1].index, 19); 3486 3487 /* 3488 * Adjust power index based on current temperature 3489 * - if colder than factory-calibrated: decreate output power 3490 * - if warmer than factory-calibrated: increase output power 3491 */ 3492 idx -= (sc->temp - group->temp) * 11 / 100; 3493 3494 /* decrease power for CCK rates (-5dB) */ 3495 if (!WPI_RATE_IS_OFDM(rate)) 3496 idx += 10; 3497 3498 /* keep power index in a valid range */ 3499 if (idx < 0) 3500 return 0; 3501 if (idx > WPI_MAX_PWR_INDEX) 3502 return WPI_MAX_PWR_INDEX; 3503 return idx; 3504 3505 #undef interpolate 3506 #undef fdivround 3507 } 3508 3509 /** 3510 * Called by net80211 framework to indicate that a scan 3511 * is starting. This function doesn't actually do the scan, 3512 * wpi_scan_curchan starts things off. This function is more 3513 * of an early warning from the framework we should get ready 3514 * for the scan. 3515 */ 3516 static void 3517 wpi_scan_start(struct ieee80211com *ic) 3518 { 3519 struct ifnet *ifp = ic->ic_ifp; 3520 struct wpi_softc *sc = ifp->if_softc; 3521 3522 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3523 } 3524 3525 /** 3526 * Called by the net80211 framework, indicates that the 3527 * scan has ended. If there is a scan in progress on the card 3528 * then it should be aborted. 3529 */ 3530 static void 3531 wpi_scan_end(struct ieee80211com *ic) 3532 { 3533 /* XXX ignore */ 3534 } 3535 3536 /** 3537 * Called by the net80211 framework to indicate to the driver 3538 * that the channel should be changed 3539 */ 3540 static void 3541 wpi_set_channel(struct ieee80211com *ic) 3542 { 3543 struct ifnet *ifp = ic->ic_ifp; 3544 struct wpi_softc *sc = ifp->if_softc; 3545 int error; 3546 3547 /* 3548 * Only need to set the channel in Monitor mode. AP scanning and auth 3549 * are already taken care of by their respective firmware commands. 3550 */ 3551 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3552 error = wpi_config(sc); 3553 if (error != 0) 3554 device_printf(sc->sc_dev, 3555 "error %d settting channel\n", error); 3556 } 3557 } 3558 3559 /** 3560 * Called by net80211 to indicate that we need to scan the current 3561 * channel. The channel is previously be set via the wpi_set_channel 3562 * callback. 3563 */ 3564 static void 3565 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3566 { 3567 struct ieee80211vap *vap = ss->ss_vap; 3568 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3569 struct wpi_softc *sc = ifp->if_softc; 3570 3571 if (wpi_scan(sc)) 3572 ieee80211_cancel_scan(vap); 3573 } 3574 3575 /** 3576 * Called by the net80211 framework to indicate 3577 * the minimum dwell time has been met, terminate the scan. 3578 * We don't actually terminate the scan as the firmware will notify 3579 * us when it's finished and we have no way to interrupt it. 3580 */ 3581 static void 3582 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3583 { 3584 /* NB: don't try to abort scan; wait for firmware to finish */ 3585 } 3586 3587 static void 3588 wpi_hwreset_task(void *arg, int pending) 3589 { 3590 struct wpi_softc *sc; 3591 3592 wlan_serialize_enter(); 3593 sc = arg; 3594 wpi_init_locked(sc, 0); 3595 wlan_serialize_exit(); 3596 } 3597 3598 static void 3599 wpi_rfreset_task(void *arg, int pending) 3600 { 3601 struct wpi_softc *sc; 3602 3603 wlan_serialize_enter(); 3604 sc = arg; 3605 wpi_rfkill_resume(sc); 3606 wlan_serialize_exit(); 3607 } 3608 3609 /* 3610 * Allocate DMA-safe memory for firmware transfer. 3611 */ 3612 static int 3613 wpi_alloc_fwmem(struct wpi_softc *sc) 3614 { 3615 /* allocate enough contiguous space to store text and data */ 3616 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3617 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3618 BUS_DMA_NOWAIT); 3619 } 3620 3621 static void 3622 wpi_free_fwmem(struct wpi_softc *sc) 3623 { 3624 wpi_dma_contig_free(&sc->fw_dma); 3625 } 3626 3627 /** 3628 * Called every second, wpi_watchdog_callout used by the watch dog timer 3629 * to check that the card is still alive 3630 */ 3631 static void 3632 wpi_watchdog_callout(void *arg) 3633 { 3634 struct wpi_softc *sc; 3635 struct ifnet *ifp; 3636 struct ieee80211com *ic; 3637 uint32_t tmp; 3638 3639 wlan_serialize_enter(); 3640 sc = arg; 3641 ifp = sc->sc_ifp; 3642 ic = ifp->if_l2com; 3643 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3644 3645 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3646 /* No need to lock firmware memory */ 3647 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3648 3649 if ((tmp & 0x1) == 0) { 3650 /* Radio kill switch is still off */ 3651 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc); 3652 wlan_serialize_exit(); 3653 return; 3654 } 3655 3656 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3657 ieee80211_runtask(ic, &sc->sc_radiotask); 3658 wlan_serialize_exit(); 3659 return; 3660 } 3661 3662 if (sc->sc_tx_timer > 0) { 3663 if (--sc->sc_tx_timer == 0) { 3664 device_printf(sc->sc_dev,"device timeout\n"); 3665 IFNET_STAT_INC(ifp, oerrors, 1); 3666 wlan_serialize_exit(); 3667 ieee80211_runtask(ic, &sc->sc_restarttask); 3668 wlan_serialize_enter(); 3669 } 3670 } 3671 if (sc->sc_scan_timer > 0) { 3672 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3673 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3674 device_printf(sc->sc_dev,"scan timeout\n"); 3675 ieee80211_cancel_scan(vap); 3676 wlan_serialize_exit(); 3677 ieee80211_runtask(ic, &sc->sc_restarttask); 3678 wlan_serialize_enter(); 3679 } 3680 } 3681 3682 if (ifp->if_flags & IFF_RUNNING) 3683 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc); 3684 3685 wlan_serialize_exit(); 3686 } 3687 3688 #ifdef WPI_DEBUG 3689 static const char *wpi_cmd_str(int cmd) 3690 { 3691 switch (cmd) { 3692 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3693 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3694 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3695 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3696 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3697 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3698 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3699 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3700 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3701 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3702 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3703 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3704 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3705 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3706 3707 default: 3708 KASSERT(1, ("Unknown Command: %d", cmd)); 3709 return "UNKNOWN CMD"; /* Make the compiler happy */ 3710 } 3711 } 3712 #endif 3713 3714 MODULE_DEPEND(wpi, pci, 1, 1, 1); 3715 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3716 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3717 MODULE_DEPEND(wpi, wlan_amrr, 1, 1, 1); 3718