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 *); 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 { 0, 0 } 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 wpi_start(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 ifp->if_ierrors++; 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 ifp->if_ierrors++; 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 ifp->if_ierrors++; 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 ifp->if_ierrors++; 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 ifp->if_ierrors++; 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 ifp->if_oerrors++; 1600 else 1601 ifp->if_opackets++; 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 ifp->if_flags &= ~IFF_OACTIVE; 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) 2016 { 2017 wpi_start_locked(ifp); 2018 } 2019 2020 static void 2021 wpi_start_locked(struct ifnet *ifp) 2022 { 2023 struct wpi_softc *sc = ifp->if_softc; 2024 struct ieee80211_node *ni; 2025 struct mbuf *m; 2026 int ac; 2027 2028 if ((ifp->if_flags & IFF_RUNNING) == 0) { 2029 ifq_purge(&ifp->if_snd); 2030 return; 2031 } 2032 2033 for (;;) { 2034 m = ifq_dequeue(&ifp->if_snd, NULL); 2035 if (m == NULL) 2036 break; 2037 ac = M_WME_GETAC(m); 2038 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2039 /* there is no place left in this ring */ 2040 /* 2041 * XXX: we CANNOT do it this way. If something 2042 * is prepended already, this is going to blow. 2043 */ 2044 ifp->if_flags |= IFF_OACTIVE; 2045 ifq_prepend(&ifp->if_snd, m); 2046 break; 2047 } 2048 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2049 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2050 ieee80211_free_node(ni); 2051 ifp->if_oerrors++; 2052 break; 2053 } 2054 sc->sc_tx_timer = 5; 2055 } 2056 } 2057 2058 static int 2059 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2060 const struct ieee80211_bpf_params *params) 2061 { 2062 struct ieee80211com *ic = ni->ni_ic; 2063 struct ifnet *ifp = ic->ic_ifp; 2064 struct wpi_softc *sc = ifp->if_softc; 2065 2066 /* prevent management frames from being sent if we're not ready */ 2067 if (!(ifp->if_flags & IFF_RUNNING)) { 2068 m_freem(m); 2069 ieee80211_free_node(ni); 2070 return ENETDOWN; 2071 } 2072 2073 /* management frames go into ring 0 */ 2074 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2075 ifp->if_flags |= IFF_OACTIVE; 2076 m_freem(m); 2077 ieee80211_free_node(ni); 2078 return ENOBUFS; /* XXX */ 2079 } 2080 2081 ifp->if_opackets++; 2082 if (wpi_tx_data(sc, m, ni, 0) != 0) 2083 goto bad; 2084 sc->sc_tx_timer = 5; 2085 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc); 2086 2087 return 0; 2088 bad: 2089 ifp->if_oerrors++; 2090 ieee80211_free_node(ni); 2091 return EIO; /* XXX */ 2092 } 2093 2094 static int 2095 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cred) 2096 { 2097 struct wpi_softc *sc = ifp->if_softc; 2098 struct ieee80211com *ic = ifp->if_l2com; 2099 struct ifreq *ifr = (struct ifreq *) data; 2100 int error = 0, startall = 0; 2101 2102 switch (cmd) { 2103 case SIOCSIFFLAGS: 2104 if ((ifp->if_flags & IFF_UP)) { 2105 if (!(ifp->if_flags & IFF_RUNNING)) { 2106 wpi_init_locked(sc, 0); 2107 startall = 1; 2108 } 2109 } else if ((ifp->if_flags & IFF_RUNNING) || 2110 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2111 wpi_stop_locked(sc); 2112 if (startall) 2113 ieee80211_start_all(ic); 2114 break; 2115 case SIOCGIFMEDIA: 2116 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2117 break; 2118 case SIOCGIFADDR: 2119 error = ether_ioctl(ifp, cmd, data); 2120 break; 2121 default: 2122 error = EINVAL; 2123 break; 2124 } 2125 return error; 2126 } 2127 2128 /* 2129 * Extract various information from EEPROM. 2130 */ 2131 static void 2132 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2133 { 2134 int i; 2135 2136 /* read the hardware capabilities, revision and SKU type */ 2137 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2138 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2139 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2140 2141 /* read the regulatory domain */ 2142 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2143 2144 /* read in the hw MAC address */ 2145 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2146 2147 /* read the list of authorized channels */ 2148 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2149 wpi_read_eeprom_channels(sc,i); 2150 2151 /* read the power level calibration info for each group */ 2152 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2153 wpi_read_eeprom_group(sc,i); 2154 } 2155 2156 /* 2157 * Send a command to the firmware. 2158 */ 2159 static int 2160 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2161 { 2162 struct wpi_tx_ring *ring = &sc->cmdq; 2163 struct wpi_tx_desc *desc; 2164 struct wpi_tx_cmd *cmd; 2165 2166 #ifdef WPI_DEBUG 2167 if (!async) { 2168 wlan_assert_serialized(); 2169 } 2170 #endif 2171 2172 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2173 async)); 2174 2175 if (sc->flags & WPI_FLAG_BUSY) { 2176 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2177 __func__, code); 2178 return EAGAIN; 2179 } 2180 sc->flags|= WPI_FLAG_BUSY; 2181 2182 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2183 code, size)); 2184 2185 desc = &ring->desc[ring->cur]; 2186 cmd = &ring->cmd[ring->cur]; 2187 2188 cmd->code = code; 2189 cmd->flags = 0; 2190 cmd->qid = ring->qid; 2191 cmd->idx = ring->cur; 2192 memcpy(cmd->data, buf, size); 2193 2194 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2195 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2196 ring->cur * sizeof (struct wpi_tx_cmd)); 2197 desc->segs[0].len = htole32(4 + size); 2198 2199 /* kick cmd ring */ 2200 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2201 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2202 2203 if (async) { 2204 sc->flags &= ~ WPI_FLAG_BUSY; 2205 return 0; 2206 } 2207 2208 return zsleep(cmd, &wlan_global_serializer, 0, "wpicmd", hz); 2209 } 2210 2211 static int 2212 wpi_wme_update(struct ieee80211com *ic) 2213 { 2214 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2215 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2216 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2217 const struct wmeParams *wmep; 2218 struct wpi_wme_setup wme; 2219 int ac; 2220 2221 /* don't override default WME values if WME is not actually enabled */ 2222 if (!(ic->ic_flags & IEEE80211_F_WME)) 2223 return 0; 2224 2225 wme.flags = 0; 2226 for (ac = 0; ac < WME_NUM_AC; ac++) { 2227 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2228 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2229 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2230 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2231 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2232 2233 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2234 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2235 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2236 } 2237 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2238 #undef WPI_USEC 2239 #undef WPI_EXP2 2240 } 2241 2242 /* 2243 * Configure h/w multi-rate retries. 2244 */ 2245 static int 2246 wpi_mrr_setup(struct wpi_softc *sc) 2247 { 2248 struct ifnet *ifp = sc->sc_ifp; 2249 struct ieee80211com *ic = ifp->if_l2com; 2250 struct wpi_mrr_setup mrr; 2251 int i, error; 2252 2253 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2254 2255 /* CCK rates (not used with 802.11a) */ 2256 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2257 mrr.rates[i].flags = 0; 2258 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2259 /* fallback to the immediate lower CCK rate (if any) */ 2260 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2261 /* try one time at this rate before falling back to "next" */ 2262 mrr.rates[i].ntries = 1; 2263 } 2264 2265 /* OFDM rates (not used with 802.11b) */ 2266 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2267 mrr.rates[i].flags = 0; 2268 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2269 /* fallback to the immediate lower OFDM rate (if any) */ 2270 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2271 mrr.rates[i].next = (i == WPI_OFDM6) ? 2272 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2273 WPI_OFDM6 : WPI_CCK2) : 2274 i - 1; 2275 /* try one time at this rate before falling back to "next" */ 2276 mrr.rates[i].ntries = 1; 2277 } 2278 2279 /* setup MRR for control frames */ 2280 mrr.which = htole32(WPI_MRR_CTL); 2281 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2282 if (error != 0) { 2283 device_printf(sc->sc_dev, 2284 "could not setup MRR for control frames\n"); 2285 return error; 2286 } 2287 2288 /* setup MRR for data frames */ 2289 mrr.which = htole32(WPI_MRR_DATA); 2290 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2291 if (error != 0) { 2292 device_printf(sc->sc_dev, 2293 "could not setup MRR for data frames\n"); 2294 return error; 2295 } 2296 2297 return 0; 2298 } 2299 2300 static void 2301 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2302 { 2303 struct wpi_cmd_led led; 2304 2305 led.which = which; 2306 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2307 led.off = off; 2308 led.on = on; 2309 2310 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2311 } 2312 2313 static void 2314 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2315 { 2316 struct wpi_cmd_tsf tsf; 2317 uint64_t val, mod; 2318 2319 memset(&tsf, 0, sizeof tsf); 2320 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2321 tsf.bintval = htole16(ni->ni_intval); 2322 tsf.lintval = htole16(10); 2323 2324 /* compute remaining time until next beacon */ 2325 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2326 mod = le64toh(tsf.tstamp) % val; 2327 tsf.binitval = htole32((uint32_t)(val - mod)); 2328 2329 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2330 device_printf(sc->sc_dev, "could not enable TSF\n"); 2331 } 2332 2333 #if 0 2334 /* 2335 * Build a beacon frame that the firmware will broadcast periodically in 2336 * IBSS or HostAP modes. 2337 */ 2338 static int 2339 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2340 { 2341 struct ifnet *ifp = sc->sc_ifp; 2342 struct ieee80211com *ic = ifp->if_l2com; 2343 struct wpi_tx_ring *ring = &sc->cmdq; 2344 struct wpi_tx_desc *desc; 2345 struct wpi_tx_data *data; 2346 struct wpi_tx_cmd *cmd; 2347 struct wpi_cmd_beacon *bcn; 2348 struct ieee80211_beacon_offsets bo; 2349 struct mbuf *m0; 2350 bus_addr_t physaddr; 2351 int error; 2352 2353 desc = &ring->desc[ring->cur]; 2354 data = &ring->data[ring->cur]; 2355 2356 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2357 if (m0 == NULL) { 2358 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2359 return ENOMEM; 2360 } 2361 2362 cmd = &ring->cmd[ring->cur]; 2363 cmd->code = WPI_CMD_SET_BEACON; 2364 cmd->flags = 0; 2365 cmd->qid = ring->qid; 2366 cmd->idx = ring->cur; 2367 2368 bcn = (struct wpi_cmd_beacon *)cmd->data; 2369 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2370 bcn->id = WPI_ID_BROADCAST; 2371 bcn->ofdm_mask = 0xff; 2372 bcn->cck_mask = 0x0f; 2373 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2374 bcn->len = htole16(m0->m_pkthdr.len); 2375 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2376 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2377 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2378 2379 /* save and trim IEEE802.11 header */ 2380 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2381 m_adj(m0, sizeof (struct ieee80211_frame)); 2382 2383 /* assume beacon frame is contiguous */ 2384 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2385 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2386 if (error != 0) { 2387 device_printf(sc->sc_dev, "could not map beacon\n"); 2388 m_freem(m0); 2389 return error; 2390 } 2391 2392 data->m = m0; 2393 2394 /* first scatter/gather segment is used by the beacon command */ 2395 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2396 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2397 ring->cur * sizeof (struct wpi_tx_cmd)); 2398 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2399 desc->segs[1].addr = htole32(physaddr); 2400 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2401 2402 /* kick cmd ring */ 2403 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2404 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2405 2406 return 0; 2407 } 2408 #endif 2409 2410 static int 2411 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2412 { 2413 struct ieee80211com *ic = vap->iv_ic; 2414 struct ieee80211_node *ni; 2415 struct wpi_node_info node; 2416 int error; 2417 2418 2419 /* update adapter's configuration */ 2420 sc->config.associd = 0; 2421 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2422 ni = ieee80211_ref_node(vap->iv_bss); 2423 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2424 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2425 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2426 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2427 WPI_CONFIG_24GHZ); 2428 } 2429 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2430 sc->config.cck_mask = 0; 2431 sc->config.ofdm_mask = 0x15; 2432 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2433 sc->config.cck_mask = 0x03; 2434 sc->config.ofdm_mask = 0; 2435 } else { 2436 /* XXX assume 802.11b/g */ 2437 sc->config.cck_mask = 0x0f; 2438 sc->config.ofdm_mask = 0x15; 2439 } 2440 2441 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2442 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2443 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2444 sizeof (struct wpi_config), 1); 2445 if (error != 0) { 2446 device_printf(sc->sc_dev, "could not configure\n"); 2447 ieee80211_free_node(ni); 2448 return error; 2449 } 2450 2451 /* configuration has changed, set Tx power accordingly */ 2452 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2453 device_printf(sc->sc_dev, "could not set Tx power\n"); 2454 ieee80211_free_node(ni); 2455 return error; 2456 } 2457 2458 /* add default node */ 2459 memset(&node, 0, sizeof node); 2460 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2461 ieee80211_free_node(ni); 2462 node.id = WPI_ID_BSS; 2463 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2464 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2465 node.action = htole32(WPI_ACTION_SET_RATE); 2466 node.antenna = WPI_ANTENNA_BOTH; 2467 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2468 if (error != 0) 2469 device_printf(sc->sc_dev, "could not add BSS node\n"); 2470 2471 return (error); 2472 } 2473 2474 static int 2475 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2476 { 2477 struct ieee80211com *ic = vap->iv_ic; 2478 struct ieee80211_node *ni; 2479 int error; 2480 2481 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2482 /* link LED blinks while monitoring */ 2483 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2484 return 0; 2485 } 2486 2487 ni = ieee80211_ref_node(vap->iv_bss); 2488 wpi_enable_tsf(sc, ni); 2489 2490 /* update adapter's configuration */ 2491 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2492 /* short preamble/slot time are negotiated when associating */ 2493 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2494 WPI_CONFIG_SHSLOT); 2495 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2496 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2497 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2498 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2499 sc->config.filter |= htole32(WPI_FILTER_BSS); 2500 2501 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2502 2503 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2504 sc->config.flags)); 2505 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2506 wpi_config), 1); 2507 if (error != 0) { 2508 device_printf(sc->sc_dev, "could not update configuration\n"); 2509 ieee80211_free_node(ni); 2510 return error; 2511 } 2512 2513 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2514 ieee80211_free_node(ni); 2515 if (error != 0) { 2516 device_printf(sc->sc_dev, "could set txpower\n"); 2517 return error; 2518 } 2519 2520 /* link LED always on while associated */ 2521 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2522 2523 /* start automatic rate control timer */ 2524 callout_reset(&sc->calib_to_callout, 60*hz, wpi_calib_timeout_callout, sc); 2525 2526 return (error); 2527 } 2528 2529 /* 2530 * Send a scan request to the firmware. Since this command is huge, we map it 2531 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2532 * much of this code is similar to that in wpi_cmd but because we must manually 2533 * construct the probe & channels, we duplicate what's needed here. XXX In the 2534 * future, this function should be modified to use wpi_cmd to help cleanup the 2535 * code base. 2536 */ 2537 static int 2538 wpi_scan(struct wpi_softc *sc) 2539 { 2540 struct ifnet *ifp = sc->sc_ifp; 2541 struct ieee80211com *ic = ifp->if_l2com; 2542 struct ieee80211_scan_state *ss = ic->ic_scan; 2543 struct wpi_tx_ring *ring = &sc->cmdq; 2544 struct wpi_tx_desc *desc; 2545 struct wpi_tx_data *data; 2546 struct wpi_tx_cmd *cmd; 2547 struct wpi_scan_hdr *hdr; 2548 struct wpi_scan_chan *chan; 2549 struct ieee80211_frame *wh; 2550 struct ieee80211_rateset *rs; 2551 struct ieee80211_channel *c; 2552 enum ieee80211_phymode mode; 2553 uint8_t *frm; 2554 int nrates, pktlen, error, i, nssid; 2555 bus_addr_t physaddr; 2556 2557 desc = &ring->desc[ring->cur]; 2558 data = &ring->data[ring->cur]; 2559 2560 data->m = m_getjcl(MB_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 2561 if (data->m == NULL) { 2562 device_printf(sc->sc_dev, 2563 "could not allocate mbuf for scan command\n"); 2564 return ENOMEM; 2565 } 2566 2567 cmd = mtod(data->m, struct wpi_tx_cmd *); 2568 cmd->code = WPI_CMD_SCAN; 2569 cmd->flags = 0; 2570 cmd->qid = ring->qid; 2571 cmd->idx = ring->cur; 2572 2573 hdr = (struct wpi_scan_hdr *)cmd->data; 2574 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2575 2576 /* 2577 * Move to the next channel if no packets are received within 5 msecs 2578 * after sending the probe request (this helps to reduce the duration 2579 * of active scans). 2580 */ 2581 hdr->quiet = htole16(5); 2582 hdr->threshold = htole16(1); 2583 2584 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2585 /* send probe requests at 6Mbps */ 2586 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2587 2588 /* Enable crc checking */ 2589 hdr->promotion = htole16(1); 2590 } else { 2591 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2592 /* send probe requests at 1Mbps */ 2593 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2594 } 2595 hdr->tx.id = WPI_ID_BROADCAST; 2596 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2597 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2598 2599 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2600 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2601 for (i = 0; i < nssid; i++) { 2602 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2603 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32); 2604 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2605 hdr->scan_essids[i].esslen); 2606 #ifdef WPI_DEBUG 2607 if (wpi_debug & WPI_DEBUG_SCANNING) { 2608 kprintf("Scanning Essid: "); 2609 ieee80211_print_essid(hdr->scan_essids[i].essid, 2610 hdr->scan_essids[i].esslen); 2611 kprintf("\n"); 2612 } 2613 #endif 2614 } 2615 2616 /* 2617 * Build a probe request frame. Most of the following code is a 2618 * copy & paste of what is done in net80211. 2619 */ 2620 wh = (struct ieee80211_frame *)&hdr->scan_essids[4]; 2621 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2622 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2623 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2624 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2625 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2626 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2627 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2628 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2629 2630 frm = (uint8_t *)(wh + 1); 2631 2632 /* add essid IE, the hardware will fill this in for us */ 2633 *frm++ = IEEE80211_ELEMID_SSID; 2634 *frm++ = 0; 2635 2636 mode = ieee80211_chan2mode(ic->ic_curchan); 2637 rs = &ic->ic_sup_rates[mode]; 2638 2639 /* add supported rates IE */ 2640 *frm++ = IEEE80211_ELEMID_RATES; 2641 nrates = rs->rs_nrates; 2642 if (nrates > IEEE80211_RATE_SIZE) 2643 nrates = IEEE80211_RATE_SIZE; 2644 *frm++ = nrates; 2645 memcpy(frm, rs->rs_rates, nrates); 2646 frm += nrates; 2647 2648 /* add supported xrates IE */ 2649 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 2650 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE; 2651 *frm++ = IEEE80211_ELEMID_XRATES; 2652 *frm++ = nrates; 2653 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates); 2654 frm += nrates; 2655 } 2656 2657 /* setup length of probe request */ 2658 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2659 2660 /* 2661 * Construct information about the channel that we 2662 * want to scan. The firmware expects this to be directly 2663 * after the scan probe request 2664 */ 2665 c = ic->ic_curchan; 2666 chan = (struct wpi_scan_chan *)frm; 2667 chan->chan = ieee80211_chan2ieee(ic, c); 2668 chan->flags = 0; 2669 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2670 chan->flags |= WPI_CHAN_ACTIVE; 2671 if (nssid != 0) 2672 chan->flags |= WPI_CHAN_DIRECT; 2673 } 2674 chan->gain_dsp = 0x6e; /* Default level */ 2675 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2676 chan->active = htole16(10); 2677 chan->passive = htole16(ss->ss_maxdwell); 2678 chan->gain_radio = 0x3b; 2679 } else { 2680 chan->active = htole16(20); 2681 chan->passive = htole16(ss->ss_maxdwell); 2682 chan->gain_radio = 0x28; 2683 } 2684 2685 DPRINTFN(WPI_DEBUG_SCANNING, 2686 ("Scanning %u Passive: %d\n", 2687 chan->chan, 2688 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2689 2690 hdr->nchan++; 2691 chan++; 2692 2693 frm += sizeof (struct wpi_scan_chan); 2694 #if 0 2695 // XXX All Channels.... 2696 for (c = &ic->ic_channels[1]; 2697 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2698 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2699 continue; 2700 2701 chan->chan = ieee80211_chan2ieee(ic, c); 2702 chan->flags = 0; 2703 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2704 chan->flags |= WPI_CHAN_ACTIVE; 2705 if (ic->ic_des_ssid[0].len != 0) 2706 chan->flags |= WPI_CHAN_DIRECT; 2707 } 2708 chan->gain_dsp = 0x6e; /* Default level */ 2709 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2710 chan->active = htole16(10); 2711 chan->passive = htole16(110); 2712 chan->gain_radio = 0x3b; 2713 } else { 2714 chan->active = htole16(20); 2715 chan->passive = htole16(120); 2716 chan->gain_radio = 0x28; 2717 } 2718 2719 DPRINTFN(WPI_DEBUG_SCANNING, 2720 ("Scanning %u Passive: %d\n", 2721 chan->chan, 2722 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2723 2724 hdr->nchan++; 2725 chan++; 2726 2727 frm += sizeof (struct wpi_scan_chan); 2728 } 2729 #endif 2730 2731 hdr->len = htole16(frm - (uint8_t *)hdr); 2732 pktlen = frm - (uint8_t *)cmd; 2733 2734 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2735 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2736 if (error != 0) { 2737 device_printf(sc->sc_dev, "could not map scan command\n"); 2738 m_freem(data->m); 2739 data->m = NULL; 2740 return error; 2741 } 2742 2743 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2744 desc->segs[0].addr = htole32(physaddr); 2745 desc->segs[0].len = htole32(pktlen); 2746 2747 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2748 BUS_DMASYNC_PREWRITE); 2749 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2750 2751 /* kick cmd ring */ 2752 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2753 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2754 2755 sc->sc_scan_timer = 5; 2756 return 0; /* will be notified async. of failure/success */ 2757 } 2758 2759 /** 2760 * Configure the card to listen to a particular channel, this transisions the 2761 * card in to being able to receive frames from remote devices. 2762 */ 2763 static int 2764 wpi_config(struct wpi_softc *sc) 2765 { 2766 struct ifnet *ifp = sc->sc_ifp; 2767 struct ieee80211com *ic = ifp->if_l2com; 2768 struct wpi_power power; 2769 struct wpi_bluetooth bluetooth; 2770 struct wpi_node_info node; 2771 int error; 2772 2773 /* set power mode */ 2774 memset(&power, 0, sizeof power); 2775 power.flags = htole32(WPI_POWER_CAM|0x8); 2776 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2777 if (error != 0) { 2778 device_printf(sc->sc_dev, "could not set power mode\n"); 2779 return error; 2780 } 2781 2782 /* configure bluetooth coexistence */ 2783 memset(&bluetooth, 0, sizeof bluetooth); 2784 bluetooth.flags = 3; 2785 bluetooth.lead = 0xaa; 2786 bluetooth.kill = 1; 2787 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2788 0); 2789 if (error != 0) { 2790 device_printf(sc->sc_dev, 2791 "could not configure bluetooth coexistence\n"); 2792 return error; 2793 } 2794 2795 /* configure adapter */ 2796 memset(&sc->config, 0, sizeof (struct wpi_config)); 2797 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2798 /*set default channel*/ 2799 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2800 sc->config.flags = htole32(WPI_CONFIG_TSF); 2801 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2802 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2803 WPI_CONFIG_24GHZ); 2804 } 2805 sc->config.filter = 0; 2806 switch (ic->ic_opmode) { 2807 case IEEE80211_M_STA: 2808 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2809 sc->config.mode = WPI_MODE_STA; 2810 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2811 break; 2812 case IEEE80211_M_IBSS: 2813 case IEEE80211_M_AHDEMO: 2814 sc->config.mode = WPI_MODE_IBSS; 2815 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2816 WPI_FILTER_MULTICAST); 2817 break; 2818 case IEEE80211_M_HOSTAP: 2819 sc->config.mode = WPI_MODE_HOSTAP; 2820 break; 2821 case IEEE80211_M_MONITOR: 2822 sc->config.mode = WPI_MODE_MONITOR; 2823 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2824 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2825 break; 2826 default: 2827 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2828 return EINVAL; 2829 } 2830 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2831 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2832 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2833 sizeof (struct wpi_config), 0); 2834 if (error != 0) { 2835 device_printf(sc->sc_dev, "configure command failed\n"); 2836 return error; 2837 } 2838 2839 /* configuration has changed, set Tx power accordingly */ 2840 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2841 device_printf(sc->sc_dev, "could not set Tx power\n"); 2842 return error; 2843 } 2844 2845 /* add broadcast node */ 2846 memset(&node, 0, sizeof node); 2847 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 2848 node.id = WPI_ID_BROADCAST; 2849 node.rate = wpi_plcp_signal(2); 2850 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 2851 if (error != 0) { 2852 device_printf(sc->sc_dev, "could not add broadcast node\n"); 2853 return error; 2854 } 2855 2856 /* Setup rate scalling */ 2857 error = wpi_mrr_setup(sc); 2858 if (error != 0) { 2859 device_printf(sc->sc_dev, "could not setup MRR\n"); 2860 return error; 2861 } 2862 2863 return 0; 2864 } 2865 2866 static void 2867 wpi_stop_master(struct wpi_softc *sc) 2868 { 2869 uint32_t tmp; 2870 int ntries; 2871 2872 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 2873 2874 tmp = WPI_READ(sc, WPI_RESET); 2875 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 2876 2877 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2878 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 2879 return; /* already asleep */ 2880 2881 for (ntries = 0; ntries < 100; ntries++) { 2882 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 2883 break; 2884 DELAY(10); 2885 } 2886 if (ntries == 100) { 2887 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2888 } 2889 } 2890 2891 static int 2892 wpi_power_up(struct wpi_softc *sc) 2893 { 2894 uint32_t tmp; 2895 int ntries; 2896 2897 wpi_mem_lock(sc); 2898 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 2899 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 2900 wpi_mem_unlock(sc); 2901 2902 for (ntries = 0; ntries < 5000; ntries++) { 2903 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 2904 break; 2905 DELAY(10); 2906 } 2907 if (ntries == 5000) { 2908 device_printf(sc->sc_dev, 2909 "timeout waiting for NIC to power up\n"); 2910 return ETIMEDOUT; 2911 } 2912 return 0; 2913 } 2914 2915 static int 2916 wpi_reset(struct wpi_softc *sc) 2917 { 2918 uint32_t tmp; 2919 int ntries; 2920 2921 DPRINTFN(WPI_DEBUG_HW, 2922 ("Resetting the card - clearing any uploaded firmware\n")); 2923 2924 /* clear any pending interrupts */ 2925 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 2926 2927 tmp = WPI_READ(sc, WPI_PLL_CTL); 2928 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 2929 2930 tmp = WPI_READ(sc, WPI_CHICKEN); 2931 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 2932 2933 tmp = WPI_READ(sc, WPI_GPIO_CTL); 2934 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 2935 2936 /* wait for clock stabilization */ 2937 for (ntries = 0; ntries < 25000; ntries++) { 2938 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 2939 break; 2940 DELAY(10); 2941 } 2942 if (ntries == 25000) { 2943 device_printf(sc->sc_dev, 2944 "timeout waiting for clock stabilization\n"); 2945 return ETIMEDOUT; 2946 } 2947 2948 /* initialize EEPROM */ 2949 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 2950 2951 if ((tmp & WPI_EEPROM_VERSION) == 0) { 2952 device_printf(sc->sc_dev, "EEPROM not found\n"); 2953 return EIO; 2954 } 2955 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 2956 2957 return 0; 2958 } 2959 2960 static void 2961 wpi_hw_config(struct wpi_softc *sc) 2962 { 2963 uint32_t rev, hw; 2964 2965 /* voodoo from the Linux "driver".. */ 2966 hw = WPI_READ(sc, WPI_HWCONFIG); 2967 2968 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 2969 if ((rev & 0xc0) == 0x40) 2970 hw |= WPI_HW_ALM_MB; 2971 else if (!(rev & 0x80)) 2972 hw |= WPI_HW_ALM_MM; 2973 2974 if (sc->cap == 0x80) 2975 hw |= WPI_HW_SKU_MRC; 2976 2977 hw &= ~WPI_HW_REV_D; 2978 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 2979 hw |= WPI_HW_REV_D; 2980 2981 if (sc->type > 1) 2982 hw |= WPI_HW_TYPE_B; 2983 2984 WPI_WRITE(sc, WPI_HWCONFIG, hw); 2985 } 2986 2987 static void 2988 wpi_rfkill_resume(struct wpi_softc *sc) 2989 { 2990 struct ifnet *ifp = sc->sc_ifp; 2991 struct ieee80211com *ic = ifp->if_l2com; 2992 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2993 int ntries; 2994 2995 /* enable firmware again */ 2996 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 2997 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 2998 2999 /* wait for thermal sensors to calibrate */ 3000 for (ntries = 0; ntries < 1000; ntries++) { 3001 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3002 break; 3003 DELAY(10); 3004 } 3005 3006 if (ntries == 1000) { 3007 device_printf(sc->sc_dev, 3008 "timeout waiting for thermal calibration\n"); 3009 return; 3010 } 3011 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3012 3013 if (wpi_config(sc) != 0) { 3014 device_printf(sc->sc_dev, "device config failed\n"); 3015 return; 3016 } 3017 3018 ifp->if_flags &= ~IFF_OACTIVE; 3019 ifp->if_flags |= IFF_RUNNING; 3020 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3021 3022 if (vap != NULL) { 3023 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3024 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3025 ieee80211_beacon_miss(ic); 3026 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3027 } else 3028 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3029 } else { 3030 ieee80211_scan_next(vap); 3031 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3032 } 3033 } 3034 3035 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc); 3036 } 3037 3038 static void 3039 wpi_init_locked(struct wpi_softc *sc, int force) 3040 { 3041 struct ifnet *ifp = sc->sc_ifp; 3042 uint32_t tmp; 3043 int ntries, qid; 3044 3045 wpi_stop_locked(sc); 3046 (void)wpi_reset(sc); 3047 3048 wpi_mem_lock(sc); 3049 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3050 DELAY(20); 3051 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3052 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3053 wpi_mem_unlock(sc); 3054 3055 (void)wpi_power_up(sc); 3056 wpi_hw_config(sc); 3057 3058 /* init Rx ring */ 3059 wpi_mem_lock(sc); 3060 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3061 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3062 offsetof(struct wpi_shared, next)); 3063 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3064 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3065 wpi_mem_unlock(sc); 3066 3067 /* init Tx rings */ 3068 wpi_mem_lock(sc); 3069 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3070 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3071 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3072 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3073 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3074 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3075 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3076 3077 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3078 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3079 3080 for (qid = 0; qid < 6; qid++) { 3081 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3082 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3083 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3084 } 3085 wpi_mem_unlock(sc); 3086 3087 /* clear "radio off" and "disable command" bits (reversed logic) */ 3088 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3089 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3090 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3091 3092 /* clear any pending interrupts */ 3093 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3094 3095 /* enable interrupts */ 3096 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3097 3098 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3099 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3100 3101 if ((wpi_load_firmware(sc)) != 0) { 3102 device_printf(sc->sc_dev, 3103 "A problem occurred loading the firmware to the driver\n"); 3104 return; 3105 } 3106 3107 /* At this point the firmware is up and running. If the hardware 3108 * RF switch is turned off thermal calibration will fail, though 3109 * the card is still happy to continue to accept commands, catch 3110 * this case and schedule a task to watch for it to be turned on. 3111 */ 3112 wpi_mem_lock(sc); 3113 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3114 wpi_mem_unlock(sc); 3115 3116 if (!(tmp & 0x1)) { 3117 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3118 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3119 goto out; 3120 } 3121 3122 /* wait for thermal sensors to calibrate */ 3123 for (ntries = 0; ntries < 1000; ntries++) { 3124 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3125 break; 3126 DELAY(10); 3127 } 3128 3129 if (ntries == 1000) { 3130 device_printf(sc->sc_dev, 3131 "timeout waiting for thermal sensors calibration\n"); 3132 return; 3133 } 3134 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3135 3136 if (wpi_config(sc) != 0) { 3137 device_printf(sc->sc_dev, "device config failed\n"); 3138 return; 3139 } 3140 3141 ifp->if_flags &= ~IFF_OACTIVE; 3142 ifp->if_flags |= IFF_RUNNING; 3143 out: 3144 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc); 3145 } 3146 3147 static void 3148 wpi_init(void *arg) 3149 { 3150 struct wpi_softc *sc = arg; 3151 struct ifnet *ifp = sc->sc_ifp; 3152 struct ieee80211com *ic = ifp->if_l2com; 3153 3154 wpi_init_locked(sc, 0); 3155 3156 if (ifp->if_flags & IFF_RUNNING) 3157 ieee80211_start_all(ic); /* start all vaps */ 3158 } 3159 3160 static void 3161 wpi_stop_locked(struct wpi_softc *sc) 3162 { 3163 struct ifnet *ifp = sc->sc_ifp; 3164 uint32_t tmp; 3165 int ac; 3166 3167 sc->sc_tx_timer = 0; 3168 sc->sc_scan_timer = 0; 3169 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3170 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3171 callout_stop(&sc->watchdog_to_callout); 3172 callout_stop(&sc->calib_to_callout); 3173 3174 3175 /* disable interrupts */ 3176 WPI_WRITE(sc, WPI_MASK, 0); 3177 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3178 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3179 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3180 3181 wpi_mem_lock(sc); 3182 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3183 wpi_mem_unlock(sc); 3184 3185 /* reset all Tx rings */ 3186 for (ac = 0; ac < 4; ac++) 3187 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3188 wpi_reset_tx_ring(sc, &sc->cmdq); 3189 3190 /* reset Rx ring */ 3191 wpi_reset_rx_ring(sc, &sc->rxq); 3192 3193 wpi_mem_lock(sc); 3194 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3195 wpi_mem_unlock(sc); 3196 3197 DELAY(5); 3198 3199 wpi_stop_master(sc); 3200 3201 tmp = WPI_READ(sc, WPI_RESET); 3202 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3203 sc->flags &= ~WPI_FLAG_BUSY; 3204 } 3205 3206 static void 3207 wpi_stop(struct wpi_softc *sc) 3208 { 3209 wpi_stop_locked(sc); 3210 } 3211 3212 static void 3213 wpi_newassoc(struct ieee80211_node *ni, int isnew) 3214 { 3215 /* XXX move */ 3216 ieee80211_ratectl_node_init(ni); 3217 } 3218 3219 static void 3220 wpi_calib_timeout_callout(void *arg) 3221 { 3222 struct wpi_softc *sc = arg; 3223 struct ifnet *ifp = sc->sc_ifp; 3224 struct ieee80211com *ic = ifp->if_l2com; 3225 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3226 int temp; 3227 3228 if (vap->iv_state != IEEE80211_S_RUN) 3229 return; 3230 3231 /* update sensor data */ 3232 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3233 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3234 3235 wpi_power_calibration(sc, temp); 3236 3237 callout_reset(&sc->calib_to_callout, 60*hz, wpi_calib_timeout_callout, sc); 3238 } 3239 3240 /* 3241 * This function is called periodically (every 60 seconds) to adjust output 3242 * power to temperature changes. 3243 */ 3244 static void 3245 wpi_power_calibration(struct wpi_softc *sc, int temp) 3246 { 3247 struct ifnet *ifp = sc->sc_ifp; 3248 struct ieee80211com *ic = ifp->if_l2com; 3249 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3250 3251 /* sanity-check read value */ 3252 if (temp < -260 || temp > 25) { 3253 /* this can't be correct, ignore */ 3254 DPRINTFN(WPI_DEBUG_TEMP, 3255 ("out-of-range temperature reported: %d\n", temp)); 3256 return; 3257 } 3258 3259 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3260 3261 /* adjust Tx power if need be */ 3262 if (abs(temp - sc->temp) <= 6) 3263 return; 3264 3265 sc->temp = temp; 3266 3267 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3268 /* just warn, too bad for the automatic calibration... */ 3269 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3270 } 3271 } 3272 3273 /** 3274 * Read the eeprom to find out what channels are valid for the given 3275 * band and update net80211 with what we find. 3276 */ 3277 static void 3278 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3279 { 3280 struct ifnet *ifp = sc->sc_ifp; 3281 struct ieee80211com *ic = ifp->if_l2com; 3282 const struct wpi_chan_band *band = &wpi_bands[n]; 3283 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3284 struct ieee80211_channel *c; 3285 int chan, i, passive; 3286 3287 wpi_read_prom_data(sc, band->addr, channels, 3288 band->nchan * sizeof (struct wpi_eeprom_chan)); 3289 3290 for (i = 0; i < band->nchan; i++) { 3291 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3292 DPRINTFN(WPI_DEBUG_HW, 3293 ("Channel Not Valid: %d, band %d\n", 3294 band->chan[i],n)); 3295 continue; 3296 } 3297 3298 passive = 0; 3299 chan = band->chan[i]; 3300 c = &ic->ic_channels[ic->ic_nchans++]; 3301 3302 /* is active scan allowed on this channel? */ 3303 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3304 passive = IEEE80211_CHAN_PASSIVE; 3305 } 3306 3307 if (n == 0) { /* 2GHz band */ 3308 c->ic_ieee = chan; 3309 c->ic_freq = ieee80211_ieee2mhz(chan, 3310 IEEE80211_CHAN_2GHZ); 3311 c->ic_flags = IEEE80211_CHAN_B | passive; 3312 3313 c = &ic->ic_channels[ic->ic_nchans++]; 3314 c->ic_ieee = chan; 3315 c->ic_freq = ieee80211_ieee2mhz(chan, 3316 IEEE80211_CHAN_2GHZ); 3317 c->ic_flags = IEEE80211_CHAN_G | passive; 3318 3319 } else { /* 5GHz band */ 3320 /* 3321 * Some 3945ABG adapters support channels 7, 8, 11 3322 * and 12 in the 2GHz *and* 5GHz bands. 3323 * Because of limitations in our net80211(9) stack, 3324 * we can't support these channels in 5GHz band. 3325 * XXX not true; just need to map to proper frequency 3326 */ 3327 if (chan <= 14) 3328 continue; 3329 3330 c->ic_ieee = chan; 3331 c->ic_freq = ieee80211_ieee2mhz(chan, 3332 IEEE80211_CHAN_5GHZ); 3333 c->ic_flags = IEEE80211_CHAN_A | passive; 3334 } 3335 3336 /* save maximum allowed power for this channel */ 3337 sc->maxpwr[chan] = channels[i].maxpwr; 3338 3339 #if 0 3340 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3341 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3342 //ic->ic_channels[chan].ic_minpower... 3343 //ic->ic_channels[chan].ic_maxregtxpower... 3344 #endif 3345 3346 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3347 " passive=%d, offset %d\n", chan, c->ic_freq, 3348 channels[i].flags, sc->maxpwr[chan], 3349 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3350 ic->ic_nchans)); 3351 } 3352 } 3353 3354 static void 3355 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3356 { 3357 struct wpi_power_group *group = &sc->groups[n]; 3358 struct wpi_eeprom_group rgroup; 3359 int i; 3360 3361 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3362 sizeof rgroup); 3363 3364 /* save power group information */ 3365 group->chan = rgroup.chan; 3366 group->maxpwr = rgroup.maxpwr; 3367 /* temperature at which the samples were taken */ 3368 group->temp = (int16_t)le16toh(rgroup.temp); 3369 3370 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3371 group->chan, group->maxpwr, group->temp)); 3372 3373 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3374 group->samples[i].index = rgroup.samples[i].index; 3375 group->samples[i].power = rgroup.samples[i].power; 3376 3377 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3378 group->samples[i].index, group->samples[i].power)); 3379 } 3380 } 3381 3382 /* 3383 * Update Tx power to match what is defined for channel `c'. 3384 */ 3385 static int 3386 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3387 { 3388 struct ifnet *ifp = sc->sc_ifp; 3389 struct ieee80211com *ic = ifp->if_l2com; 3390 struct wpi_power_group *group; 3391 struct wpi_cmd_txpower txpower; 3392 u_int chan; 3393 int i; 3394 3395 /* get channel number */ 3396 chan = ieee80211_chan2ieee(ic, c); 3397 3398 /* find the power group to which this channel belongs */ 3399 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3400 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3401 if (chan <= group->chan) 3402 break; 3403 } else 3404 group = &sc->groups[0]; 3405 3406 memset(&txpower, 0, sizeof txpower); 3407 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3408 txpower.channel = htole16(chan); 3409 3410 /* set Tx power for all OFDM and CCK rates */ 3411 for (i = 0; i <= 11 ; i++) { 3412 /* retrieve Tx power for this channel/rate combination */ 3413 int idx = wpi_get_power_index(sc, group, c, 3414 wpi_ridx_to_rate[i]); 3415 3416 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3417 3418 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3419 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3420 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3421 } else { 3422 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3423 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3424 } 3425 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3426 chan, wpi_ridx_to_rate[i], idx)); 3427 } 3428 3429 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3430 } 3431 3432 /* 3433 * Determine Tx power index for a given channel/rate combination. 3434 * This takes into account the regulatory information from EEPROM and the 3435 * current temperature. 3436 */ 3437 static int 3438 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3439 struct ieee80211_channel *c, int rate) 3440 { 3441 /* fixed-point arithmetic division using a n-bit fractional part */ 3442 #define fdivround(a, b, n) \ 3443 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3444 3445 /* linear interpolation */ 3446 #define interpolate(x, x1, y1, x2, y2, n) \ 3447 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3448 3449 struct ifnet *ifp = sc->sc_ifp; 3450 struct ieee80211com *ic = ifp->if_l2com; 3451 struct wpi_power_sample *sample; 3452 int pwr, idx; 3453 u_int chan; 3454 3455 /* get channel number */ 3456 chan = ieee80211_chan2ieee(ic, c); 3457 3458 /* default power is group's maximum power - 3dB */ 3459 pwr = group->maxpwr / 2; 3460 3461 /* decrease power for highest OFDM rates to reduce distortion */ 3462 switch (rate) { 3463 case 72: /* 36Mb/s */ 3464 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3465 break; 3466 case 96: /* 48Mb/s */ 3467 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3468 break; 3469 case 108: /* 54Mb/s */ 3470 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3471 break; 3472 } 3473 3474 /* never exceed channel's maximum allowed Tx power */ 3475 pwr = min(pwr, sc->maxpwr[chan]); 3476 3477 /* retrieve power index into gain tables from samples */ 3478 for (sample = group->samples; sample < &group->samples[3]; sample++) 3479 if (pwr > sample[1].power) 3480 break; 3481 /* fixed-point linear interpolation using a 19-bit fractional part */ 3482 idx = interpolate(pwr, sample[0].power, sample[0].index, 3483 sample[1].power, sample[1].index, 19); 3484 3485 /* 3486 * Adjust power index based on current temperature 3487 * - if colder than factory-calibrated: decreate output power 3488 * - if warmer than factory-calibrated: increase output power 3489 */ 3490 idx -= (sc->temp - group->temp) * 11 / 100; 3491 3492 /* decrease power for CCK rates (-5dB) */ 3493 if (!WPI_RATE_IS_OFDM(rate)) 3494 idx += 10; 3495 3496 /* keep power index in a valid range */ 3497 if (idx < 0) 3498 return 0; 3499 if (idx > WPI_MAX_PWR_INDEX) 3500 return WPI_MAX_PWR_INDEX; 3501 return idx; 3502 3503 #undef interpolate 3504 #undef fdivround 3505 } 3506 3507 /** 3508 * Called by net80211 framework to indicate that a scan 3509 * is starting. This function doesn't actually do the scan, 3510 * wpi_scan_curchan starts things off. This function is more 3511 * of an early warning from the framework we should get ready 3512 * for the scan. 3513 */ 3514 static void 3515 wpi_scan_start(struct ieee80211com *ic) 3516 { 3517 struct ifnet *ifp = ic->ic_ifp; 3518 struct wpi_softc *sc = ifp->if_softc; 3519 3520 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3521 } 3522 3523 /** 3524 * Called by the net80211 framework, indicates that the 3525 * scan has ended. If there is a scan in progress on the card 3526 * then it should be aborted. 3527 */ 3528 static void 3529 wpi_scan_end(struct ieee80211com *ic) 3530 { 3531 /* XXX ignore */ 3532 } 3533 3534 /** 3535 * Called by the net80211 framework to indicate to the driver 3536 * that the channel should be changed 3537 */ 3538 static void 3539 wpi_set_channel(struct ieee80211com *ic) 3540 { 3541 struct ifnet *ifp = ic->ic_ifp; 3542 struct wpi_softc *sc = ifp->if_softc; 3543 int error; 3544 3545 /* 3546 * Only need to set the channel in Monitor mode. AP scanning and auth 3547 * are already taken care of by their respective firmware commands. 3548 */ 3549 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3550 error = wpi_config(sc); 3551 if (error != 0) 3552 device_printf(sc->sc_dev, 3553 "error %d settting channel\n", error); 3554 } 3555 } 3556 3557 /** 3558 * Called by net80211 to indicate that we need to scan the current 3559 * channel. The channel is previously be set via the wpi_set_channel 3560 * callback. 3561 */ 3562 static void 3563 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3564 { 3565 struct ieee80211vap *vap = ss->ss_vap; 3566 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3567 struct wpi_softc *sc = ifp->if_softc; 3568 3569 if (wpi_scan(sc)) 3570 ieee80211_cancel_scan(vap); 3571 } 3572 3573 /** 3574 * Called by the net80211 framework to indicate 3575 * the minimum dwell time has been met, terminate the scan. 3576 * We don't actually terminate the scan as the firmware will notify 3577 * us when it's finished and we have no way to interrupt it. 3578 */ 3579 static void 3580 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3581 { 3582 /* NB: don't try to abort scan; wait for firmware to finish */ 3583 } 3584 3585 static void 3586 wpi_hwreset_task(void *arg, int pending) 3587 { 3588 struct wpi_softc *sc; 3589 3590 wlan_serialize_enter(); 3591 sc = arg; 3592 wpi_init_locked(sc, 0); 3593 wlan_serialize_exit(); 3594 } 3595 3596 static void 3597 wpi_rfreset_task(void *arg, int pending) 3598 { 3599 struct wpi_softc *sc; 3600 3601 wlan_serialize_enter(); 3602 sc = arg; 3603 wpi_rfkill_resume(sc); 3604 wlan_serialize_exit(); 3605 } 3606 3607 /* 3608 * Allocate DMA-safe memory for firmware transfer. 3609 */ 3610 static int 3611 wpi_alloc_fwmem(struct wpi_softc *sc) 3612 { 3613 /* allocate enough contiguous space to store text and data */ 3614 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3615 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3616 BUS_DMA_NOWAIT); 3617 } 3618 3619 static void 3620 wpi_free_fwmem(struct wpi_softc *sc) 3621 { 3622 wpi_dma_contig_free(&sc->fw_dma); 3623 } 3624 3625 /** 3626 * Called every second, wpi_watchdog_callout used by the watch dog timer 3627 * to check that the card is still alive 3628 */ 3629 static void 3630 wpi_watchdog_callout(void *arg) 3631 { 3632 struct wpi_softc *sc; 3633 struct ifnet *ifp; 3634 struct ieee80211com *ic; 3635 uint32_t tmp; 3636 3637 wlan_serialize_enter(); 3638 sc = arg; 3639 ifp = sc->sc_ifp; 3640 ic = ifp->if_l2com; 3641 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3642 3643 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3644 /* No need to lock firmware memory */ 3645 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3646 3647 if ((tmp & 0x1) == 0) { 3648 /* Radio kill switch is still off */ 3649 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc); 3650 wlan_serialize_exit(); 3651 return; 3652 } 3653 3654 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3655 ieee80211_runtask(ic, &sc->sc_radiotask); 3656 wlan_serialize_exit(); 3657 return; 3658 } 3659 3660 if (sc->sc_tx_timer > 0) { 3661 if (--sc->sc_tx_timer == 0) { 3662 device_printf(sc->sc_dev,"device timeout\n"); 3663 ifp->if_oerrors++; 3664 wlan_serialize_exit(); 3665 ieee80211_runtask(ic, &sc->sc_restarttask); 3666 wlan_serialize_enter(); 3667 } 3668 } 3669 if (sc->sc_scan_timer > 0) { 3670 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3671 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3672 device_printf(sc->sc_dev,"scan timeout\n"); 3673 ieee80211_cancel_scan(vap); 3674 wlan_serialize_exit(); 3675 ieee80211_runtask(ic, &sc->sc_restarttask); 3676 wlan_serialize_enter(); 3677 } 3678 } 3679 3680 if (ifp->if_flags & IFF_RUNNING) 3681 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc); 3682 3683 wlan_serialize_exit(); 3684 } 3685 3686 #ifdef WPI_DEBUG 3687 static const char *wpi_cmd_str(int cmd) 3688 { 3689 switch (cmd) { 3690 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3691 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3692 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3693 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3694 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3695 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3696 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3697 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3698 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3699 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3700 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3701 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3702 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3703 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3704 3705 default: 3706 KASSERT(1, ("Unknown Command: %d", cmd)); 3707 return "UNKNOWN CMD"; /* Make the compiler happy */ 3708 } 3709 } 3710 #endif 3711 3712 MODULE_DEPEND(wpi, pci, 1, 1, 1); 3713 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3714 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3715 MODULE_DEPEND(wpi, wlan_amrr, 1, 1, 1); 3716