1 /*- 2 * Copyright (c) 2006,2007 3 * Damien Bergamini <damien.bergamini@free.fr> 4 * Benjamin Close <Benjamin.Close@clearchain.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #define VERSION "20071127" 20 21 #include <sys/cdefs.h> 22 __FBSDID("$FreeBSD$"); 23 24 /* 25 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters. 26 * 27 * The 3945ABG network adapter doesn't use traditional hardware as 28 * many other adaptors do. Instead at run time the eeprom is set into a known 29 * state and told to load boot firmware. The boot firmware loads an init and a 30 * main binary firmware image into SRAM on the card via DMA. 31 * Once the firmware is loaded, the driver/hw then 32 * communicate by way of circular dma rings via the SRAM to the firmware. 33 * 34 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings. 35 * The 4 tx data rings allow for prioritization QoS. 36 * 37 * The rx data ring consists of 32 dma buffers. Two registers are used to 38 * indicate where in the ring the driver and the firmware are up to. The 39 * driver sets the initial read index (reg1) and the initial write index (reg2), 40 * the firmware updates the read index (reg1) on rx of a packet and fires an 41 * interrupt. The driver then processes the buffers starting at reg1 indicating 42 * to the firmware which buffers have been accessed by updating reg2. At the 43 * same time allocating new memory for the processed buffer. 44 * 45 * A similar thing happens with the tx rings. The difference is the firmware 46 * stop processing buffers once the queue is full and until confirmation 47 * of a successful transmition (tx_intr) has occurred. 48 * 49 * The command ring operates in the same manner as the tx queues. 50 * 51 * All communication direct to the card (ie eeprom) is classed as Stage1 52 * communication 53 * 54 * All communication via the firmware to the card is classed as State2. 55 * The firmware consists of 2 parts. A bootstrap firmware and a runtime 56 * firmware. The bootstrap firmware and runtime firmware are loaded 57 * from host memory via dma to the card then told to execute. From this point 58 * on the majority of communications between the driver and the card goes 59 * via the firmware. 60 */ 61 62 #include "opt_wlan.h" 63 64 #include <sys/param.h> 65 #include <sys/sysctl.h> 66 #include <sys/sockio.h> 67 #include <sys/mbuf.h> 68 #include <sys/kernel.h> 69 #include <sys/socket.h> 70 #include <sys/systm.h> 71 #include <sys/malloc.h> 72 #include <sys/queue.h> 73 #include <sys/taskqueue.h> 74 #include <sys/module.h> 75 #include <sys/bus.h> 76 #include <sys/endian.h> 77 #include <sys/linker.h> 78 #include <sys/firmware.h> 79 80 #include <sys/stdbool.h> 81 #include <sys/rman.h> 82 83 #include <bus/pci/pcireg.h> 84 #include <bus/pci/pcivar.h> 85 86 #include <net/bpf.h> 87 #include <net/if.h> 88 #include <net/if_var.h> 89 #include <net/if_arp.h> 90 #include <net/ethernet.h> 91 #include <net/if_dl.h> 92 #include <net/if_media.h> 93 #include <net/if_types.h> 94 #include <net/ifq_var.h> 95 96 #include <netproto/802_11/ieee80211_var.h> 97 #include <netproto/802_11/ieee80211_radiotap.h> 98 #include <netproto/802_11/ieee80211_regdomain.h> 99 #include <netproto/802_11/ieee80211_ratectl.h> 100 101 #include <netinet/in.h> 102 #include <netinet/in_systm.h> 103 #include <netinet/in_var.h> 104 #include <netinet/ip.h> 105 #include <netinet/if_ether.h> 106 107 #include <dev/netif/wpi/if_wpireg.h> 108 #include <dev/netif/wpi/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; 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 [IFNAMSIZ], int, enum ieee80211_opmode, int, 164 const uint8_t [IEEE80211_ADDR_LEN], 165 const uint8_t [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 int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 181 static void wpi_mem_lock(struct wpi_softc *); 182 static void wpi_mem_unlock(struct wpi_softc *); 183 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t); 184 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t); 185 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t, 186 const uint32_t *, int); 187 static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int); 188 static int wpi_alloc_fwmem(struct wpi_softc *); 189 static void wpi_free_fwmem(struct wpi_softc *); 190 static int wpi_load_firmware(struct wpi_softc *); 191 static void wpi_unload_firmware(struct wpi_softc *); 192 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int); 193 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *, 194 struct wpi_rx_data *); 195 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *); 196 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *); 197 static void wpi_notif_intr(struct wpi_softc *); 198 static void wpi_intr(void *); 199 static uint8_t wpi_plcp_signal(int); 200 static void wpi_watchdog(void *); 201 static int wpi_tx_data(struct wpi_softc *, struct mbuf *, 202 struct ieee80211_node *, int); 203 static void wpi_start(struct ifnet *, struct ifaltq_subque *); 204 static void wpi_start_locked(struct ifnet *); 205 static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *, 206 const struct ieee80211_bpf_params *); 207 static void wpi_scan_start(struct ieee80211com *); 208 static void wpi_scan_end(struct ieee80211com *); 209 static void wpi_set_channel(struct ieee80211com *); 210 static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long); 211 static void wpi_scan_mindwell(struct ieee80211_scan_state *); 212 static int wpi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *); 213 static void wpi_read_eeprom(struct wpi_softc *, 214 uint8_t macaddr[IEEE80211_ADDR_LEN]); 215 static void wpi_read_eeprom_channels(struct wpi_softc *, int); 216 static void wpi_read_eeprom_group(struct wpi_softc *, int); 217 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int); 218 static int wpi_wme_update(struct ieee80211com *); 219 static int wpi_mrr_setup(struct wpi_softc *); 220 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t); 221 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *); 222 #if 0 223 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *); 224 #endif 225 static int wpi_auth(struct wpi_softc *, struct ieee80211vap *); 226 static int wpi_run(struct wpi_softc *, struct ieee80211vap *); 227 static int wpi_scan(struct wpi_softc *); 228 static int wpi_config(struct wpi_softc *); 229 static void wpi_stop_master(struct wpi_softc *); 230 static int wpi_power_up(struct wpi_softc *); 231 static int wpi_reset(struct wpi_softc *); 232 static void wpi_hwreset(void *, int); 233 static void wpi_rfreset(void *, int); 234 static void wpi_hw_config(struct wpi_softc *); 235 static void wpi_init(void *); 236 static void wpi_init_locked(struct wpi_softc *, int); 237 static void wpi_stop(struct wpi_softc *); 238 static void wpi_stop_locked(struct wpi_softc *); 239 240 static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *, 241 int); 242 static void wpi_calib_timeout(void *); 243 static void wpi_power_calibration(struct wpi_softc *, int); 244 static int wpi_get_power_index(struct wpi_softc *, 245 struct wpi_power_group *, struct ieee80211_channel *, int); 246 #ifdef WPI_DEBUG 247 static const char *wpi_cmd_str(int); 248 #endif 249 static int wpi_probe(device_t); 250 static int wpi_attach(device_t); 251 static int wpi_detach(device_t); 252 static int wpi_shutdown(device_t); 253 static int wpi_suspend(device_t); 254 static int wpi_resume(device_t); 255 256 #if defined(__DragonFly__) 257 static int wpi_sleep(struct wpi_softc *sc, void *wchan, 258 int flags, const char *wmsg, int timo); 259 #endif 260 261 static device_method_t wpi_methods[] = { 262 /* Device interface */ 263 DEVMETHOD(device_probe, wpi_probe), 264 DEVMETHOD(device_attach, wpi_attach), 265 DEVMETHOD(device_detach, wpi_detach), 266 DEVMETHOD(device_shutdown, wpi_shutdown), 267 DEVMETHOD(device_suspend, wpi_suspend), 268 DEVMETHOD(device_resume, wpi_resume), 269 270 DEVMETHOD_END 271 }; 272 273 static driver_t wpi_driver = { 274 "wpi", 275 wpi_methods, 276 sizeof (struct wpi_softc) 277 }; 278 279 static devclass_t wpi_devclass; 280 281 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL); 282 283 MODULE_VERSION(wpi, 1); 284 285 static const uint8_t wpi_ridx_to_plcp[] = { 286 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */ 287 /* R1-R4 (ral/ural is R4-R1) */ 288 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3, 289 /* CCK: device-dependent */ 290 10, 20, 55, 110 291 }; 292 293 static const uint8_t wpi_ridx_to_rate[] = { 294 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */ 295 2, 4, 11, 22 /*CCK */ 296 }; 297 298 static int 299 wpi_probe(device_t dev) 300 { 301 const struct wpi_ident *ident; 302 303 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 304 if (pci_get_vendor(dev) == ident->vendor && 305 pci_get_device(dev) == ident->device) { 306 device_set_desc(dev, ident->name); 307 return (BUS_PROBE_DEFAULT); 308 } 309 } 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 WPI_UNLOCK(sc); 335 336 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'\n"); 339 error = ENOENT; 340 WPI_LOCK(sc); 341 goto fail; 342 } 343 344 fp = sc->fw_fp; 345 346 WPI_LOCK(sc); 347 348 /* Validate the firmware is minimum a particular version */ 349 if (fp->version < WPI_FW_MINVERSION) { 350 device_printf(sc->sc_dev, 351 "firmware version is too old. Need %d, got %d\n", 352 WPI_FW_MINVERSION, 353 fp->version); 354 error = ENXIO; 355 goto fail; 356 } 357 358 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) { 359 device_printf(sc->sc_dev, 360 "firmware file too short: %zu bytes\n", fp->datasize); 361 error = ENXIO; 362 goto fail; 363 } 364 365 hdr = (const struct wpi_firmware_hdr *)fp->data; 366 367 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW | 368 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */ 369 370 rtextsz = le32toh(hdr->rtextsz); 371 rdatasz = le32toh(hdr->rdatasz); 372 itextsz = le32toh(hdr->itextsz); 373 idatasz = le32toh(hdr->idatasz); 374 btextsz = le32toh(hdr->btextsz); 375 376 /* check that all firmware segments are present */ 377 if (fp->datasize < sizeof (struct wpi_firmware_hdr) + 378 rtextsz + rdatasz + itextsz + idatasz + btextsz) { 379 device_printf(sc->sc_dev, 380 "firmware file too short: %zu bytes\n", fp->datasize); 381 error = ENXIO; /* XXX appropriate error code? */ 382 goto fail; 383 } 384 385 /* get pointers to firmware segments */ 386 rtext = (const uint8_t *)(hdr + 1); 387 rdata = rtext + rtextsz; 388 itext = rdata + rdatasz; 389 idata = itext + itextsz; 390 btext = idata + idatasz; 391 392 DPRINTFN(WPI_DEBUG_FIRMWARE, 393 ("Firmware Version: Major %d, Minor %d, Driver %d, \n" 394 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n", 395 (le32toh(hdr->version) & 0xff000000) >> 24, 396 (le32toh(hdr->version) & 0x00ff0000) >> 16, 397 (le32toh(hdr->version) & 0x0000ffff), 398 rtextsz, rdatasz, 399 itextsz, idatasz, btextsz)); 400 401 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext)); 402 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata)); 403 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext)); 404 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata)); 405 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext)); 406 407 /* sanity checks */ 408 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ || 409 rdatasz > WPI_FW_MAIN_DATA_MAXSZ || 410 itextsz > WPI_FW_INIT_TEXT_MAXSZ || 411 idatasz > WPI_FW_INIT_DATA_MAXSZ || 412 btextsz > WPI_FW_BOOT_TEXT_MAXSZ || 413 (btextsz & 3) != 0) { 414 device_printf(sc->sc_dev, "firmware invalid\n"); 415 error = EINVAL; 416 goto fail; 417 } 418 419 /* copy initialization images into pre-allocated DMA-safe memory */ 420 memcpy(dma->vaddr, idata, idatasz); 421 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz); 422 423 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 424 425 /* tell adapter where to find initialization images */ 426 wpi_mem_lock(sc); 427 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 428 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz); 429 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 430 dma->paddr + WPI_FW_INIT_DATA_MAXSZ); 431 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz); 432 wpi_mem_unlock(sc); 433 434 /* load firmware boot code */ 435 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) { 436 device_printf(sc->sc_dev, "Failed to load microcode\n"); 437 goto fail; 438 } 439 440 /* now press "execute" */ 441 WPI_WRITE(sc, WPI_RESET, 0); 442 443 /* wait at most one second for the first alive notification */ 444 #if defined(__DragonFly__) 445 if ((error = wpi_sleep(sc, sc, PCATCH, "wpiinit", hz)) != 0) { 446 device_printf(sc->sc_dev, 447 "timeout waiting for adapter to initialize\n"); 448 goto fail; 449 } 450 #else 451 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 452 device_printf(sc->sc_dev, 453 "timeout waiting for adapter to initialize\n"); 454 goto fail; 455 } 456 #endif 457 458 /* copy runtime images into pre-allocated DMA-sage memory */ 459 memcpy(dma->vaddr, rdata, rdatasz); 460 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz); 461 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 462 463 /* tell adapter where to find runtime images */ 464 wpi_mem_lock(sc); 465 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr); 466 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz); 467 wpi_mem_write(sc, WPI_MEM_TEXT_BASE, 468 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ); 469 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz); 470 wpi_mem_unlock(sc); 471 472 /* wait at most one second for the first alive notification */ 473 #if defined(__DragonFly__) 474 if ((error = wpi_sleep(sc, sc, PCATCH, "wpiinit", hz)) != 0) { 475 device_printf(sc->sc_dev, 476 "timeout waiting for adapter to initialize2\n"); 477 goto fail; 478 } 479 #else 480 if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) { 481 device_printf(sc->sc_dev, 482 "timeout waiting for adapter to initialize2\n"); 483 goto fail; 484 } 485 #endif 486 487 DPRINTFN(WPI_DEBUG_FIRMWARE, 488 ("Firmware loaded to driver successfully\n")); 489 return error; 490 fail: 491 wpi_unload_firmware(sc); 492 return error; 493 } 494 495 /** 496 * Free the referenced firmware image 497 */ 498 static void 499 wpi_unload_firmware(struct wpi_softc *sc) 500 { 501 502 if (sc->fw_fp) { 503 WPI_UNLOCK(sc); 504 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD); 505 WPI_LOCK(sc); 506 sc->fw_fp = NULL; 507 } 508 } 509 510 static int 511 wpi_attach(device_t dev) 512 { 513 struct wpi_softc *sc = device_get_softc(dev); 514 struct ifnet *ifp; 515 struct ieee80211com *ic; 516 int ac, error, rid, supportsa = 1; 517 uint32_t tmp; 518 const struct wpi_ident *ident; 519 uint8_t macaddr[IEEE80211_ADDR_LEN]; 520 521 sc->sc_dev = dev; 522 523 if (bootverbose || WPI_DEBUG_SET) 524 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION); 525 526 /* 527 * Some card's only support 802.11b/g not a, check to see if 528 * this is one such card. A 0x0 in the subdevice table indicates 529 * the entire subdevice range is to be ignored. 530 */ 531 for (ident = wpi_ident_table; ident->name != NULL; ident++) { 532 if (ident->subdevice && 533 pci_get_subdevice(dev) == ident->subdevice) { 534 supportsa = 0; 535 break; 536 } 537 } 538 539 /* Create the tasks that can be queued */ 540 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc); 541 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc); 542 543 WPI_LOCK_INIT(sc); 544 545 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 546 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 547 548 /* disable the retry timeout register */ 549 pci_write_config(dev, 0x41, 0, 1); 550 551 /* enable bus-mastering */ 552 pci_enable_busmaster(dev); 553 554 rid = PCIR_BAR(0); 555 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 556 RF_ACTIVE); 557 if (sc->mem == NULL) { 558 device_printf(dev, "could not allocate memory resource\n"); 559 error = ENOMEM; 560 goto fail; 561 } 562 563 sc->sc_st = rman_get_bustag(sc->mem); 564 sc->sc_sh = rman_get_bushandle(sc->mem); 565 566 rid = 0; 567 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 568 RF_ACTIVE | RF_SHAREABLE); 569 if (sc->irq == NULL) { 570 device_printf(dev, "could not allocate interrupt resource\n"); 571 error = ENOMEM; 572 goto fail; 573 } 574 575 /* 576 * Allocate DMA memory for firmware transfers. 577 */ 578 if ((error = wpi_alloc_fwmem(sc)) != 0) { 579 kprintf(": could not allocate firmware memory\n"); 580 error = ENOMEM; 581 goto fail; 582 } 583 584 /* 585 * Put adapter into a known state. 586 */ 587 if ((error = wpi_reset(sc)) != 0) { 588 device_printf(dev, "could not reset adapter\n"); 589 goto fail; 590 } 591 592 wpi_mem_lock(sc); 593 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 594 if (bootverbose || WPI_DEBUG_SET) 595 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp); 596 597 wpi_mem_unlock(sc); 598 599 /* Allocate shared page */ 600 if ((error = wpi_alloc_shared(sc)) != 0) { 601 device_printf(dev, "could not allocate shared page\n"); 602 goto fail; 603 } 604 605 /* tx data queues - 4 for QoS purposes */ 606 for (ac = 0; ac < WME_NUM_AC; ac++) { 607 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac); 608 if (error != 0) { 609 device_printf(dev, "could not allocate Tx ring %d\n",ac); 610 goto fail; 611 } 612 } 613 614 /* command queue to talk to the card's firmware */ 615 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4); 616 if (error != 0) { 617 device_printf(dev, "could not allocate command ring\n"); 618 goto fail; 619 } 620 621 /* receive data queue */ 622 error = wpi_alloc_rx_ring(sc, &sc->rxq); 623 if (error != 0) { 624 device_printf(dev, "could not allocate Rx ring\n"); 625 goto fail; 626 } 627 628 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 629 if (ifp == NULL) { 630 device_printf(dev, "can not if_alloc()\n"); 631 error = ENOMEM; 632 goto fail; 633 } 634 ic = ifp->if_l2com; 635 636 ic->ic_ifp = ifp; 637 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 638 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 639 640 /* set device capabilities */ 641 ic->ic_caps = 642 IEEE80211_C_STA /* station mode supported */ 643 | IEEE80211_C_MONITOR /* monitor mode supported */ 644 | IEEE80211_C_TXPMGT /* tx power management */ 645 | IEEE80211_C_SHSLOT /* short slot time supported */ 646 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 647 | IEEE80211_C_WPA /* 802.11i */ 648 /* XXX looks like WME is partly supported? */ 649 #if 0 650 | IEEE80211_C_IBSS /* IBSS mode support */ 651 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 652 | IEEE80211_C_WME /* 802.11e */ 653 | IEEE80211_C_HOSTAP /* Host access point mode */ 654 #endif 655 ; 656 657 /* 658 * Read in the eeprom and also setup the channels for 659 * net80211. We don't set the rates as net80211 does this for us 660 */ 661 wpi_read_eeprom(sc, macaddr); 662 663 if (bootverbose || WPI_DEBUG_SET) { 664 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain); 665 device_printf(sc->sc_dev, "Hardware Type: %c\n", 666 sc->type > 1 ? 'B': '?'); 667 device_printf(sc->sc_dev, "Hardware Revision: %c\n", 668 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?'); 669 device_printf(sc->sc_dev, "SKU %s support 802.11a\n", 670 supportsa ? "does" : "does not"); 671 672 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check 673 what sc->rev really represents - benjsc 20070615 */ 674 } 675 676 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 677 ifp->if_softc = sc; 678 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 679 ifp->if_init = wpi_init; 680 ifp->if_ioctl = wpi_ioctl; 681 ifp->if_start = wpi_start; 682 #if defined(__DragonFly__) 683 ifq_set_maxlen(&ifp->if_snd, ifqmaxlen); 684 #else 685 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 686 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 687 IFQ_SET_READY(&ifp->if_snd); 688 #endif 689 690 /* ieee80211_ifattach() assumes that WLAN serializer is held */ 691 wlan_serialize_enter(); 692 ieee80211_ifattach(ic, macaddr); 693 wlan_serialize_exit(); 694 /* override default methods */ 695 ic->ic_raw_xmit = wpi_raw_xmit; 696 ic->ic_wme.wme_update = wpi_wme_update; 697 ic->ic_scan_start = wpi_scan_start; 698 ic->ic_scan_end = wpi_scan_end; 699 ic->ic_set_channel = wpi_set_channel; 700 ic->ic_scan_curchan = wpi_scan_curchan; 701 ic->ic_scan_mindwell = wpi_scan_mindwell; 702 703 ic->ic_vap_create = wpi_vap_create; 704 ic->ic_vap_delete = wpi_vap_delete; 705 706 ieee80211_radiotap_attach(ic, 707 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 708 WPI_TX_RADIOTAP_PRESENT, 709 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 710 WPI_RX_RADIOTAP_PRESENT); 711 712 /* 713 * Hook our interrupt after all initialization is complete. 714 */ 715 #if defined (__DragonFly__) 716 error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE, 717 wpi_intr, sc, &sc->sc_ih, &wlan_global_serializer); 718 #else 719 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 720 NULL, wpi_intr, sc, &sc->sc_ih); 721 #endif 722 if (error != 0) { 723 device_printf(dev, "could not set up interrupt\n"); 724 goto fail; 725 } 726 727 if (bootverbose) 728 ieee80211_announce(ic); 729 #ifdef XXX_DEBUG 730 ieee80211_announce_channels(ic); 731 #endif 732 return 0; 733 734 fail: wpi_detach(dev); 735 return ENXIO; 736 } 737 738 static int 739 wpi_detach(device_t dev) 740 { 741 struct wpi_softc *sc = device_get_softc(dev); 742 struct ifnet *ifp = sc->sc_ifp; 743 struct ieee80211com *ic; 744 int ac; 745 746 if (sc->irq != NULL) 747 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 748 749 if (ifp != NULL) { 750 ic = ifp->if_l2com; 751 752 ieee80211_draintask(ic, &sc->sc_restarttask); 753 ieee80211_draintask(ic, &sc->sc_radiotask); 754 wpi_stop(sc); 755 callout_drain(&sc->watchdog_to); 756 callout_drain(&sc->calib_to); 757 ieee80211_ifdetach(ic); 758 } 759 760 WPI_LOCK(sc); 761 if (sc->txq[0].data_dmat) { 762 for (ac = 0; ac < WME_NUM_AC; ac++) 763 wpi_free_tx_ring(sc, &sc->txq[ac]); 764 765 wpi_free_tx_ring(sc, &sc->cmdq); 766 wpi_free_rx_ring(sc, &sc->rxq); 767 wpi_free_shared(sc); 768 } 769 770 if (sc->fw_fp != NULL) { 771 wpi_unload_firmware(sc); 772 } 773 774 if (sc->fw_dma.tag) 775 wpi_free_fwmem(sc); 776 WPI_UNLOCK(sc); 777 778 if (sc->irq != NULL) 779 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 780 sc->irq); 781 if (sc->mem != NULL) 782 bus_release_resource(dev, SYS_RES_MEMORY, 783 rman_get_rid(sc->mem), sc->mem); 784 785 if (ifp != NULL) 786 if_free(ifp); 787 788 WPI_LOCK_DESTROY(sc); 789 790 return 0; 791 } 792 793 static struct ieee80211vap * 794 wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 795 enum ieee80211_opmode opmode, int flags, 796 const uint8_t bssid[IEEE80211_ADDR_LEN], 797 const uint8_t mac[IEEE80211_ADDR_LEN]) 798 { 799 struct wpi_vap *wvp; 800 struct ieee80211vap *vap; 801 802 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 803 return NULL; 804 wvp = (struct wpi_vap *) kmalloc(sizeof(struct wpi_vap), 805 M_80211_VAP, M_INTWAIT | M_ZERO); 806 if (wvp == NULL) 807 return NULL; 808 vap = &wvp->vap; 809 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 810 /* override with driver methods */ 811 wvp->newstate = vap->iv_newstate; 812 vap->iv_newstate = wpi_newstate; 813 814 ieee80211_ratectl_init(vap); 815 /* complete setup */ 816 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 817 ic->ic_opmode = opmode; 818 return vap; 819 } 820 821 static void 822 wpi_vap_delete(struct ieee80211vap *vap) 823 { 824 struct wpi_vap *wvp = WPI_VAP(vap); 825 826 ieee80211_ratectl_deinit(vap); 827 ieee80211_vap_detach(vap); 828 kfree(wvp, M_80211_VAP); 829 } 830 831 static void 832 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 833 { 834 if (error != 0) 835 return; 836 837 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 838 839 *(bus_addr_t *)arg = segs[0].ds_addr; 840 } 841 842 /* 843 * Allocates a contiguous block of dma memory of the requested size and 844 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 845 * allocations greater than 4096 may fail. Hence if the requested alignment is 846 * greater we allocate 'alignment' size extra memory and shift the vaddr and 847 * paddr after the dma load. This bypasses the problem at the cost of a little 848 * more memory. 849 */ 850 static int 851 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 852 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 853 { 854 int error; 855 bus_size_t align; 856 bus_size_t reqsize; 857 858 DPRINTFN(WPI_DEBUG_DMA, 859 ("Size: %zd - alignment %zd\n", size, alignment)); 860 861 dma->size = size; 862 dma->tag = NULL; 863 864 if (alignment > 4096) { 865 align = PAGE_SIZE; 866 reqsize = size + alignment; 867 } else { 868 align = alignment; 869 reqsize = size; 870 } 871 #if defined(__DragonFly__) 872 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 873 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 874 NULL, NULL, reqsize, 875 1, reqsize, flags, 876 &dma->tag); 877 #else 878 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 879 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 880 NULL, NULL, reqsize, 881 1, reqsize, flags, 882 NULL, NULL, &dma->tag); 883 #endif 884 if (error != 0) { 885 device_printf(sc->sc_dev, 886 "could not create shared page DMA tag\n"); 887 goto fail; 888 } 889 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 890 flags | BUS_DMA_ZERO, &dma->map); 891 if (error != 0) { 892 device_printf(sc->sc_dev, 893 "could not allocate shared page DMA memory\n"); 894 goto fail; 895 } 896 897 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 898 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 899 900 /* Save the original pointers so we can free all the memory */ 901 dma->paddr = dma->paddr_start; 902 dma->vaddr = dma->vaddr_start; 903 904 /* 905 * Check the alignment and increment by 4096 until we get the 906 * requested alignment. Fail if can't obtain the alignment 907 * we requested. 908 */ 909 if ((dma->paddr & (alignment -1 )) != 0) { 910 int i; 911 912 for (i = 0; i < alignment / 4096; i++) { 913 if ((dma->paddr & (alignment - 1 )) == 0) 914 break; 915 dma->paddr += 4096; 916 dma->vaddr += 4096; 917 } 918 if (i == alignment / 4096) { 919 device_printf(sc->sc_dev, 920 "alignment requirement was not satisfied\n"); 921 goto fail; 922 } 923 } 924 925 if (error != 0) { 926 device_printf(sc->sc_dev, 927 "could not load shared page DMA map\n"); 928 goto fail; 929 } 930 931 if (kvap != NULL) 932 *kvap = dma->vaddr; 933 934 return 0; 935 936 fail: 937 wpi_dma_contig_free(dma); 938 return error; 939 } 940 941 static void 942 wpi_dma_contig_free(struct wpi_dma_info *dma) 943 { 944 if (dma->tag) { 945 if (dma->vaddr_start != NULL) { 946 if (dma->paddr_start != 0) { 947 bus_dmamap_sync(dma->tag, dma->map, 948 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 949 bus_dmamap_unload(dma->tag, dma->map); 950 } 951 bus_dmamem_free(dma->tag, dma->vaddr_start, dma->map); 952 } 953 bus_dma_tag_destroy(dma->tag); 954 } 955 } 956 957 /* 958 * Allocate a shared page between host and NIC. 959 */ 960 static int 961 wpi_alloc_shared(struct wpi_softc *sc) 962 { 963 int error; 964 965 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 966 (void **)&sc->shared, sizeof (struct wpi_shared), 967 PAGE_SIZE, 968 BUS_DMA_NOWAIT); 969 970 if (error != 0) { 971 device_printf(sc->sc_dev, 972 "could not allocate shared area DMA memory\n"); 973 } 974 975 return error; 976 } 977 978 static void 979 wpi_free_shared(struct wpi_softc *sc) 980 { 981 wpi_dma_contig_free(&sc->shared_dma); 982 } 983 984 static int 985 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 986 { 987 988 int i, error; 989 990 ring->cur = 0; 991 992 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 993 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 994 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 995 996 if (error != 0) { 997 device_printf(sc->sc_dev, 998 "%s: could not allocate rx ring DMA memory, error %d\n", 999 __func__, error); 1000 goto fail; 1001 } 1002 1003 #if defined(__DragonFly__) 1004 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1005 BUS_SPACE_MAXADDR_32BIT, 1006 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 1007 MJUMPAGESIZE, BUS_DMA_NOWAIT, &ring->data_dmat); 1008 #else 1009 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1010 BUS_SPACE_MAXADDR_32BIT, 1011 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 1012 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 1013 #endif 1014 if (error != 0) { 1015 device_printf(sc->sc_dev, 1016 "%s: bus_dma_tag_create_failed, error %d\n", 1017 __func__, error); 1018 goto fail; 1019 } 1020 1021 /* 1022 * Setup Rx buffers. 1023 */ 1024 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1025 struct wpi_rx_data *data = &ring->data[i]; 1026 struct mbuf *m; 1027 bus_addr_t paddr; 1028 1029 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1030 if (error != 0) { 1031 device_printf(sc->sc_dev, 1032 "%s: bus_dmamap_create failed, error %d\n", 1033 __func__, error); 1034 goto fail; 1035 } 1036 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1037 if (m == NULL) { 1038 device_printf(sc->sc_dev, 1039 "%s: could not allocate rx mbuf\n", __func__); 1040 error = ENOMEM; 1041 goto fail; 1042 } 1043 /* map page */ 1044 error = bus_dmamap_load(ring->data_dmat, data->map, 1045 mtod(m, caddr_t), MJUMPAGESIZE, 1046 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1047 if (error != 0 && error != EFBIG) { 1048 device_printf(sc->sc_dev, 1049 "%s: bus_dmamap_load failed, error %d\n", 1050 __func__, error); 1051 m_freem(m); 1052 error = ENOMEM; /* XXX unique code */ 1053 goto fail; 1054 } 1055 bus_dmamap_sync(ring->data_dmat, data->map, 1056 BUS_DMASYNC_PREWRITE); 1057 1058 data->m = m; 1059 ring->desc[i] = htole32(paddr); 1060 } 1061 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1062 BUS_DMASYNC_PREWRITE); 1063 return 0; 1064 fail: 1065 wpi_free_rx_ring(sc, ring); 1066 return error; 1067 } 1068 1069 static void 1070 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1071 { 1072 int ntries; 1073 1074 wpi_mem_lock(sc); 1075 1076 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1077 1078 for (ntries = 0; ntries < 100; ntries++) { 1079 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1080 break; 1081 DELAY(10); 1082 } 1083 1084 wpi_mem_unlock(sc); 1085 1086 #ifdef WPI_DEBUG 1087 if (ntries == 100 && wpi_debug > 0) 1088 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1089 #endif 1090 1091 ring->cur = 0; 1092 } 1093 1094 static void 1095 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1096 { 1097 int i; 1098 1099 wpi_dma_contig_free(&ring->desc_dma); 1100 1101 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1102 struct wpi_rx_data *data = &ring->data[i]; 1103 1104 if (data->m != NULL) { 1105 bus_dmamap_sync(ring->data_dmat, data->map, 1106 BUS_DMASYNC_POSTREAD); 1107 bus_dmamap_unload(ring->data_dmat, data->map); 1108 m_freem(data->m); 1109 } 1110 if (data->map != NULL) 1111 bus_dmamap_destroy(ring->data_dmat, data->map); 1112 } 1113 } 1114 1115 static int 1116 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1117 int qid) 1118 { 1119 struct wpi_tx_data *data; 1120 int i, error; 1121 1122 ring->qid = qid; 1123 ring->count = count; 1124 ring->queued = 0; 1125 ring->cur = 0; 1126 ring->data = NULL; 1127 1128 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1129 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1130 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1131 1132 if (error != 0) { 1133 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1134 goto fail; 1135 } 1136 1137 /* update shared page with ring's base address */ 1138 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1139 1140 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1141 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1142 BUS_DMA_NOWAIT); 1143 1144 if (error != 0) { 1145 device_printf(sc->sc_dev, 1146 "could not allocate tx command DMA memory\n"); 1147 goto fail; 1148 } 1149 1150 ring->data = kmalloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1151 M_INTWAIT | M_ZERO); 1152 if (ring->data == NULL) { 1153 device_printf(sc->sc_dev, 1154 "could not allocate tx data slots\n"); 1155 goto fail; 1156 } 1157 1158 #if defined(__DragonFly__) 1159 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1160 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1161 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, 1162 &ring->data_dmat); 1163 #else 1164 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1165 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1166 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1167 &ring->data_dmat); 1168 #endif 1169 if (error != 0) { 1170 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1171 goto fail; 1172 } 1173 1174 for (i = 0; i < count; i++) { 1175 data = &ring->data[i]; 1176 1177 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1178 if (error != 0) { 1179 device_printf(sc->sc_dev, 1180 "could not create tx buf DMA map\n"); 1181 goto fail; 1182 } 1183 bus_dmamap_sync(ring->data_dmat, data->map, 1184 BUS_DMASYNC_PREWRITE); 1185 } 1186 1187 return 0; 1188 1189 fail: 1190 wpi_free_tx_ring(sc, ring); 1191 return error; 1192 } 1193 1194 static void 1195 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1196 { 1197 struct wpi_tx_data *data; 1198 int i, ntries; 1199 1200 wpi_mem_lock(sc); 1201 1202 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1203 for (ntries = 0; ntries < 100; ntries++) { 1204 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1205 break; 1206 DELAY(10); 1207 } 1208 #ifdef WPI_DEBUG 1209 if (ntries == 100 && wpi_debug > 0) 1210 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1211 ring->qid); 1212 #endif 1213 wpi_mem_unlock(sc); 1214 1215 for (i = 0; i < ring->count; i++) { 1216 data = &ring->data[i]; 1217 1218 if (data->m != NULL) { 1219 bus_dmamap_unload(ring->data_dmat, data->map); 1220 m_freem(data->m); 1221 data->m = NULL; 1222 } 1223 } 1224 1225 ring->queued = 0; 1226 ring->cur = 0; 1227 } 1228 1229 static void 1230 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1231 { 1232 struct wpi_tx_data *data; 1233 int i; 1234 1235 wpi_dma_contig_free(&ring->desc_dma); 1236 wpi_dma_contig_free(&ring->cmd_dma); 1237 1238 if (ring->data != NULL) { 1239 for (i = 0; i < ring->count; i++) { 1240 data = &ring->data[i]; 1241 1242 if (data->m != NULL) { 1243 bus_dmamap_sync(ring->data_dmat, data->map, 1244 BUS_DMASYNC_POSTWRITE); 1245 bus_dmamap_unload(ring->data_dmat, data->map); 1246 m_freem(data->m); 1247 data->m = NULL; 1248 } 1249 } 1250 kfree(ring->data, M_DEVBUF); 1251 } 1252 1253 if (ring->data_dmat != NULL) 1254 bus_dma_tag_destroy(ring->data_dmat); 1255 } 1256 1257 static int 1258 wpi_shutdown(device_t dev) 1259 { 1260 struct wpi_softc *sc = device_get_softc(dev); 1261 1262 WPI_LOCK(sc); 1263 wpi_stop_locked(sc); 1264 wpi_unload_firmware(sc); 1265 WPI_UNLOCK(sc); 1266 1267 return 0; 1268 } 1269 1270 static int 1271 wpi_suspend(device_t dev) 1272 { 1273 struct wpi_softc *sc = device_get_softc(dev); 1274 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1275 1276 ieee80211_suspend_all(ic); 1277 return 0; 1278 } 1279 1280 static int 1281 wpi_resume(device_t dev) 1282 { 1283 struct wpi_softc *sc = device_get_softc(dev); 1284 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1285 1286 pci_write_config(dev, 0x41, 0, 1); 1287 1288 ieee80211_resume_all(ic); 1289 return 0; 1290 } 1291 1292 /** 1293 * Called by net80211 when ever there is a change to 80211 state machine 1294 */ 1295 static int 1296 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1297 { 1298 struct wpi_vap *wvp = WPI_VAP(vap); 1299 struct ieee80211com *ic = vap->iv_ic; 1300 struct ifnet *ifp = ic->ic_ifp; 1301 struct wpi_softc *sc = ifp->if_softc; 1302 int error; 1303 1304 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1305 ieee80211_state_name[vap->iv_state], 1306 ieee80211_state_name[nstate], sc->flags)); 1307 1308 IEEE80211_UNLOCK(ic); 1309 WPI_LOCK(sc); 1310 if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) { 1311 /* 1312 * On !INIT -> SCAN transitions, we need to clear any possible 1313 * knowledge about associations. 1314 */ 1315 error = wpi_config(sc); 1316 if (error != 0) { 1317 device_printf(sc->sc_dev, 1318 "%s: device config failed, error %d\n", 1319 __func__, error); 1320 } 1321 } 1322 if (nstate == IEEE80211_S_AUTH || 1323 (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) { 1324 /* 1325 * The node must be registered in the firmware before auth. 1326 * Also the associd must be cleared on RUN -> ASSOC 1327 * transitions. 1328 */ 1329 error = wpi_auth(sc, vap); 1330 if (error != 0) { 1331 device_printf(sc->sc_dev, 1332 "%s: could not move to auth state, error %d\n", 1333 __func__, error); 1334 } 1335 } 1336 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1337 error = wpi_run(sc, vap); 1338 if (error != 0) { 1339 device_printf(sc->sc_dev, 1340 "%s: could not move to run state, error %d\n", 1341 __func__, error); 1342 } 1343 } 1344 if (nstate == IEEE80211_S_RUN) { 1345 /* RUN -> RUN transition; just restart the timers */ 1346 wpi_calib_timeout(sc); 1347 /* XXX split out rate control timer */ 1348 } 1349 WPI_UNLOCK(sc); 1350 IEEE80211_LOCK(ic); 1351 return wvp->newstate(vap, nstate, arg); 1352 } 1353 1354 /* 1355 * Grab exclusive access to NIC memory. 1356 */ 1357 static void 1358 wpi_mem_lock(struct wpi_softc *sc) 1359 { 1360 int ntries; 1361 uint32_t tmp; 1362 1363 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1364 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1365 1366 /* spin until we actually get the lock */ 1367 for (ntries = 0; ntries < 100; ntries++) { 1368 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1369 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1370 break; 1371 DELAY(10); 1372 } 1373 if (ntries == 100) 1374 device_printf(sc->sc_dev, "could not lock memory\n"); 1375 } 1376 1377 /* 1378 * Release lock on NIC memory. 1379 */ 1380 static void 1381 wpi_mem_unlock(struct wpi_softc *sc) 1382 { 1383 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1384 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1385 } 1386 1387 static uint32_t 1388 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1389 { 1390 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1391 return WPI_READ(sc, WPI_READ_MEM_DATA); 1392 } 1393 1394 static void 1395 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1396 { 1397 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1398 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1399 } 1400 1401 static void 1402 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1403 const uint32_t *data, int wlen) 1404 { 1405 for (; wlen > 0; wlen--, data++, addr+=4) 1406 wpi_mem_write(sc, addr, *data); 1407 } 1408 1409 /* 1410 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1411 * using the traditional bit-bang method. Data is read up until len bytes have 1412 * been obtained. 1413 */ 1414 static uint16_t 1415 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1416 { 1417 int ntries; 1418 uint32_t val; 1419 uint8_t *out = data; 1420 1421 wpi_mem_lock(sc); 1422 1423 for (; len > 0; len -= 2, addr++) { 1424 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1425 1426 for (ntries = 0; ntries < 10; ntries++) { 1427 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1428 break; 1429 DELAY(5); 1430 } 1431 1432 if (ntries == 10) { 1433 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1434 return ETIMEDOUT; 1435 } 1436 1437 *out++= val >> 16; 1438 if (len > 1) 1439 *out ++= val >> 24; 1440 } 1441 1442 wpi_mem_unlock(sc); 1443 1444 return 0; 1445 } 1446 1447 /* 1448 * The firmware text and data segments are transferred to the NIC using DMA. 1449 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1450 * where to find it. Once the NIC has copied the firmware into its internal 1451 * memory, we can free our local copy in the driver. 1452 */ 1453 static int 1454 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1455 { 1456 int error, ntries; 1457 1458 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1459 1460 size /= sizeof(uint32_t); 1461 1462 wpi_mem_lock(sc); 1463 1464 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1465 (const uint32_t *)fw, size); 1466 1467 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1468 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1469 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1470 1471 /* run microcode */ 1472 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1473 1474 /* wait while the adapter is busy copying the firmware */ 1475 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1476 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1477 DPRINTFN(WPI_DEBUG_HW, 1478 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1479 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1480 if (status & WPI_TX_IDLE(6)) { 1481 DPRINTFN(WPI_DEBUG_HW, 1482 ("Status Match! - ntries = %d\n", ntries)); 1483 break; 1484 } 1485 DELAY(10); 1486 } 1487 if (ntries == 1000) { 1488 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1489 error = ETIMEDOUT; 1490 } 1491 1492 /* start the microcode executing */ 1493 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1494 1495 wpi_mem_unlock(sc); 1496 1497 return (error); 1498 } 1499 1500 static void 1501 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1502 struct wpi_rx_data *data) 1503 { 1504 struct ifnet *ifp = sc->sc_ifp; 1505 struct ieee80211com *ic = ifp->if_l2com; 1506 struct wpi_rx_ring *ring = &sc->rxq; 1507 struct wpi_rx_stat *stat; 1508 struct wpi_rx_head *head; 1509 struct wpi_rx_tail *tail; 1510 struct ieee80211_node *ni; 1511 struct mbuf *m, *mnew; 1512 bus_addr_t paddr; 1513 int error; 1514 1515 stat = (struct wpi_rx_stat *)(desc + 1); 1516 1517 if (stat->len > WPI_STAT_MAXLEN) { 1518 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1519 #if defined(__DragonFly__) 1520 IFNET_STAT_INC(ifp, ierrors, 1); 1521 #else 1522 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1523 #endif 1524 return; 1525 } 1526 1527 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1528 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1529 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1530 1531 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1532 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1533 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1534 (uintmax_t)le64toh(tail->tstamp))); 1535 1536 /* discard Rx frames with bad CRC early */ 1537 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1538 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1539 le32toh(tail->flags))); 1540 #if defined(__DragonFly__) 1541 IFNET_STAT_INC(ifp, ierrors, 1); 1542 #else 1543 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1544 #endif 1545 return; 1546 } 1547 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1548 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1549 le16toh(head->len))); 1550 #if defined(__DragonFly__) 1551 IFNET_STAT_INC(ifp, ierrors, 1); 1552 #else 1553 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1554 #endif 1555 return; 1556 } 1557 1558 /* XXX don't need mbuf, just dma buffer */ 1559 mnew = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1560 if (mnew == NULL) { 1561 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1562 __func__)); 1563 #if defined(__DragonFly__) 1564 IFNET_STAT_INC(ifp, ierrors, 1); 1565 #else 1566 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1567 #endif 1568 return; 1569 } 1570 bus_dmamap_unload(ring->data_dmat, data->map); 1571 1572 error = bus_dmamap_load(ring->data_dmat, data->map, 1573 mtod(mnew, caddr_t), MJUMPAGESIZE, 1574 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1575 if (error != 0 && error != EFBIG) { 1576 device_printf(sc->sc_dev, 1577 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1578 m_freem(mnew); 1579 #if defined(__DragonFly__) 1580 IFNET_STAT_INC(ifp, ierrors, 1); 1581 #else 1582 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1583 #endif 1584 return; 1585 } 1586 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1587 1588 /* finalize mbuf and swap in new one */ 1589 m = data->m; 1590 m->m_pkthdr.rcvif = ifp; 1591 m->m_data = (caddr_t)(head + 1); 1592 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1593 1594 data->m = mnew; 1595 /* update Rx descriptor */ 1596 ring->desc[ring->cur] = htole32(paddr); 1597 1598 if (ieee80211_radiotap_active(ic)) { 1599 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1600 1601 tap->wr_flags = 0; 1602 tap->wr_chan_freq = 1603 htole16(ic->ic_channels[head->chan].ic_freq); 1604 tap->wr_chan_flags = 1605 htole16(ic->ic_channels[head->chan].ic_flags); 1606 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1607 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1608 tap->wr_tsft = tail->tstamp; 1609 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1610 switch (head->rate) { 1611 /* CCK rates */ 1612 case 10: tap->wr_rate = 2; break; 1613 case 20: tap->wr_rate = 4; break; 1614 case 55: tap->wr_rate = 11; break; 1615 case 110: tap->wr_rate = 22; break; 1616 /* OFDM rates */ 1617 case 0xd: tap->wr_rate = 12; break; 1618 case 0xf: tap->wr_rate = 18; break; 1619 case 0x5: tap->wr_rate = 24; break; 1620 case 0x7: tap->wr_rate = 36; break; 1621 case 0x9: tap->wr_rate = 48; break; 1622 case 0xb: tap->wr_rate = 72; break; 1623 case 0x1: tap->wr_rate = 96; break; 1624 case 0x3: tap->wr_rate = 108; break; 1625 /* unknown rate: should not happen */ 1626 default: tap->wr_rate = 0; 1627 } 1628 if (le16toh(head->flags) & 0x4) 1629 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1630 } 1631 1632 WPI_UNLOCK(sc); 1633 1634 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1635 if (ni != NULL) { 1636 (void) ieee80211_input(ni, m, stat->rssi, 0); 1637 ieee80211_free_node(ni); 1638 } else 1639 (void) ieee80211_input_all(ic, m, stat->rssi, 0); 1640 1641 WPI_LOCK(sc); 1642 } 1643 1644 static void 1645 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1646 { 1647 struct ifnet *ifp = sc->sc_ifp; 1648 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1649 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1650 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1651 struct ieee80211_node *ni = txdata->ni; 1652 struct ieee80211vap *vap = ni->ni_vap; 1653 int retrycnt = 0; 1654 1655 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1656 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1657 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1658 le32toh(stat->status))); 1659 1660 /* 1661 * Update rate control statistics for the node. 1662 * XXX we should not count mgmt frames since they're always sent at 1663 * the lowest available bit-rate. 1664 * XXX frames w/o ACK shouldn't be used either 1665 */ 1666 if (stat->ntries > 0) { 1667 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1668 retrycnt = 1; 1669 } 1670 ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS, 1671 &retrycnt, NULL); 1672 1673 /* XXX oerrors should only count errors !maxtries */ 1674 #if defined(__DragonFly__) 1675 if ((le32toh(stat->status) & 0xff) != 1) 1676 IFNET_STAT_INC(ifp, oerrors, 1); 1677 else 1678 IFNET_STAT_INC(ifp, opackets, 1); 1679 #else 1680 if ((le32toh(stat->status) & 0xff) != 1) 1681 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1682 else 1683 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1684 #endif 1685 1686 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1687 bus_dmamap_unload(ring->data_dmat, txdata->map); 1688 /* XXX handle M_TXCB? */ 1689 m_freem(txdata->m); 1690 txdata->m = NULL; 1691 ieee80211_free_node(txdata->ni); 1692 txdata->ni = NULL; 1693 1694 ring->queued--; 1695 1696 sc->sc_tx_timer = 0; 1697 #if defined(__DragonFly__) 1698 ifq_clr_oactive(&ifp->if_snd); 1699 #else 1700 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1701 #endif 1702 wpi_start_locked(ifp); 1703 } 1704 1705 static void 1706 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1707 { 1708 struct wpi_tx_ring *ring = &sc->cmdq; 1709 struct wpi_tx_data *data; 1710 1711 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1712 "type=%s len=%d\n", desc->qid, desc->idx, 1713 desc->flags, wpi_cmd_str(desc->type), 1714 le32toh(desc->len))); 1715 1716 if ((desc->qid & 7) != 4) 1717 return; /* not a command ack */ 1718 1719 data = &ring->data[desc->idx]; 1720 1721 /* if the command was mapped in a mbuf, free it */ 1722 if (data->m != NULL) { 1723 bus_dmamap_unload(ring->data_dmat, data->map); 1724 m_freem(data->m); 1725 data->m = NULL; 1726 } 1727 1728 sc->flags &= ~WPI_FLAG_BUSY; 1729 wakeup(&ring->cmd[desc->idx]); 1730 } 1731 1732 static void 1733 wpi_notif_intr(struct wpi_softc *sc) 1734 { 1735 struct ifnet *ifp = sc->sc_ifp; 1736 struct ieee80211com *ic = ifp->if_l2com; 1737 struct wpi_rx_desc *desc; 1738 struct wpi_rx_data *data; 1739 uint32_t hw; 1740 1741 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1742 BUS_DMASYNC_POSTREAD); 1743 1744 hw = le32toh(sc->shared->next); 1745 while (sc->rxq.cur != hw) { 1746 data = &sc->rxq.data[sc->rxq.cur]; 1747 1748 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1749 BUS_DMASYNC_POSTREAD); 1750 desc = (void *)data->m->m_ext.ext_buf; 1751 1752 DPRINTFN(WPI_DEBUG_NOTIFY, 1753 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1754 desc->qid, 1755 desc->idx, 1756 desc->flags, 1757 desc->type, 1758 le32toh(desc->len))); 1759 1760 if (!(desc->qid & 0x80)) /* reply to a command */ 1761 wpi_cmd_intr(sc, desc); 1762 1763 switch (desc->type) { 1764 case WPI_RX_DONE: 1765 /* a 802.11 frame was received */ 1766 wpi_rx_intr(sc, desc, data); 1767 break; 1768 1769 case WPI_TX_DONE: 1770 /* a 802.11 frame has been transmitted */ 1771 wpi_tx_intr(sc, desc); 1772 break; 1773 1774 case WPI_UC_READY: 1775 { 1776 struct wpi_ucode_info *uc = 1777 (struct wpi_ucode_info *)(desc + 1); 1778 1779 /* the microcontroller is ready */ 1780 DPRINTF(("microcode alive notification version %x " 1781 "alive %x\n", le32toh(uc->version), 1782 le32toh(uc->valid))); 1783 1784 if (le32toh(uc->valid) != 1) { 1785 device_printf(sc->sc_dev, 1786 "microcontroller initialization failed\n"); 1787 wpi_stop_locked(sc); 1788 } 1789 break; 1790 } 1791 case WPI_STATE_CHANGED: 1792 { 1793 uint32_t *status = (uint32_t *)(desc + 1); 1794 1795 /* enabled/disabled notification */ 1796 DPRINTF(("state changed to %x\n", le32toh(*status))); 1797 1798 if (le32toh(*status) & 1) { 1799 device_printf(sc->sc_dev, 1800 "Radio transmitter is switched off\n"); 1801 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1802 #if defined(__DragonFly__) 1803 ifp->if_flags &= ~IFF_RUNNING; 1804 #else 1805 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1806 #endif 1807 /* Disable firmware commands */ 1808 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1809 } 1810 break; 1811 } 1812 case WPI_START_SCAN: 1813 { 1814 #ifdef WPI_DEBUG 1815 struct wpi_start_scan *scan = 1816 (struct wpi_start_scan *)(desc + 1); 1817 #endif 1818 1819 DPRINTFN(WPI_DEBUG_SCANNING, 1820 ("scanning channel %d status %x\n", 1821 scan->chan, le32toh(scan->status))); 1822 break; 1823 } 1824 case WPI_STOP_SCAN: 1825 { 1826 #ifdef WPI_DEBUG 1827 struct wpi_stop_scan *scan = 1828 (struct wpi_stop_scan *)(desc + 1); 1829 #endif 1830 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1831 1832 DPRINTFN(WPI_DEBUG_SCANNING, 1833 ("scan finished nchan=%d status=%d chan=%d\n", 1834 scan->nchan, scan->status, scan->chan)); 1835 1836 sc->sc_scan_timer = 0; 1837 ieee80211_scan_next(vap); 1838 break; 1839 } 1840 case WPI_MISSED_BEACON: 1841 { 1842 struct wpi_missed_beacon *beacon = 1843 (struct wpi_missed_beacon *)(desc + 1); 1844 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1845 1846 if (le32toh(beacon->consecutive) >= 1847 vap->iv_bmissthreshold) { 1848 DPRINTF(("Beacon miss: %u >= %u\n", 1849 le32toh(beacon->consecutive), 1850 vap->iv_bmissthreshold)); 1851 ieee80211_beacon_miss(ic); 1852 } 1853 break; 1854 } 1855 } 1856 1857 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1858 } 1859 1860 /* tell the firmware what we have processed */ 1861 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1862 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1863 } 1864 1865 static void 1866 wpi_intr(void *arg) 1867 { 1868 struct wpi_softc *sc = arg; 1869 uint32_t r; 1870 1871 WPI_LOCK(sc); 1872 1873 r = WPI_READ(sc, WPI_INTR); 1874 if (r == 0 || r == 0xffffffff) { 1875 WPI_UNLOCK(sc); 1876 return; 1877 } 1878 1879 /* disable interrupts */ 1880 WPI_WRITE(sc, WPI_MASK, 0); 1881 /* ack interrupts */ 1882 WPI_WRITE(sc, WPI_INTR, r); 1883 1884 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1885 struct ifnet *ifp = sc->sc_ifp; 1886 struct ieee80211com *ic = ifp->if_l2com; 1887 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1888 1889 device_printf(sc->sc_dev, "fatal firmware error\n"); 1890 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1891 "(Hardware Error)")); 1892 if (vap != NULL) 1893 ieee80211_cancel_scan(vap); 1894 ieee80211_runtask(ic, &sc->sc_restarttask); 1895 sc->flags &= ~WPI_FLAG_BUSY; 1896 WPI_UNLOCK(sc); 1897 return; 1898 } 1899 1900 if (r & WPI_RX_INTR) 1901 wpi_notif_intr(sc); 1902 1903 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1904 wakeup(sc); 1905 1906 /* re-enable interrupts */ 1907 if (sc->sc_ifp->if_flags & IFF_UP) 1908 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1909 1910 WPI_UNLOCK(sc); 1911 } 1912 1913 static uint8_t 1914 wpi_plcp_signal(int rate) 1915 { 1916 switch (rate) { 1917 /* CCK rates (returned values are device-dependent) */ 1918 case 2: return 10; 1919 case 4: return 20; 1920 case 11: return 55; 1921 case 22: return 110; 1922 1923 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1924 /* R1-R4 (ral/ural is R4-R1) */ 1925 case 12: return 0xd; 1926 case 18: return 0xf; 1927 case 24: return 0x5; 1928 case 36: return 0x7; 1929 case 48: return 0x9; 1930 case 72: return 0xb; 1931 case 96: return 0x1; 1932 case 108: return 0x3; 1933 1934 /* unsupported rates (should not get there) */ 1935 default: return 0; 1936 } 1937 } 1938 1939 /* quickly determine if a given rate is CCK or OFDM */ 1940 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1941 1942 /* 1943 * Construct the data packet for a transmit buffer and acutally put 1944 * the buffer onto the transmit ring, kicking the card to process the 1945 * the buffer. 1946 */ 1947 static int 1948 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1949 int ac) 1950 { 1951 struct ieee80211vap *vap = ni->ni_vap; 1952 struct ifnet *ifp = sc->sc_ifp; 1953 struct ieee80211com *ic = ifp->if_l2com; 1954 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1955 struct wpi_tx_ring *ring = &sc->txq[ac]; 1956 struct wpi_tx_desc *desc; 1957 struct wpi_tx_data *data; 1958 struct wpi_tx_cmd *cmd; 1959 struct wpi_cmd_data *tx; 1960 struct ieee80211_frame *wh; 1961 const struct ieee80211_txparam *tp; 1962 struct ieee80211_key *k; 1963 struct mbuf *mnew; 1964 int i, error, nsegs, rate, hdrlen, ismcast; 1965 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1966 1967 desc = &ring->desc[ring->cur]; 1968 data = &ring->data[ring->cur]; 1969 1970 wh = mtod(m0, struct ieee80211_frame *); 1971 1972 hdrlen = ieee80211_hdrsize(wh); 1973 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1974 1975 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1976 k = ieee80211_crypto_encap(ni, m0); 1977 if (k == NULL) { 1978 m_freem(m0); 1979 return ENOBUFS; 1980 } 1981 /* packet header may have moved, reset our local pointer */ 1982 wh = mtod(m0, struct ieee80211_frame *); 1983 } 1984 1985 cmd = &ring->cmd[ring->cur]; 1986 cmd->code = WPI_CMD_TX_DATA; 1987 cmd->flags = 0; 1988 cmd->qid = ring->qid; 1989 cmd->idx = ring->cur; 1990 1991 tx = (struct wpi_cmd_data *)cmd->data; 1992 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1993 tx->timeout = htole16(0); 1994 tx->ofdm_mask = 0xff; 1995 tx->cck_mask = 0x0f; 1996 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1997 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1998 tx->len = htole16(m0->m_pkthdr.len); 1999 2000 if (!ismcast) { 2001 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 2002 !cap->cap_wmeParams[ac].wmep_noackPolicy) 2003 tx->flags |= htole32(WPI_TX_NEED_ACK); 2004 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2005 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 2006 tx->rts_ntries = 7; 2007 } 2008 } 2009 /* pick a rate */ 2010 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 2011 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 2012 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2013 /* tell h/w to set timestamp in probe responses */ 2014 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2015 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 2016 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2017 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2018 tx->timeout = htole16(3); 2019 else 2020 tx->timeout = htole16(2); 2021 rate = tp->mgmtrate; 2022 } else if (ismcast) { 2023 rate = tp->mcastrate; 2024 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 2025 rate = tp->ucastrate; 2026 } else { 2027 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2028 rate = ni->ni_txrate; 2029 } 2030 tx->rate = wpi_plcp_signal(rate); 2031 2032 /* be very persistant at sending frames out */ 2033 #if 0 2034 tx->data_ntries = tp->maxretry; 2035 #else 2036 tx->data_ntries = 15; /* XXX way too high */ 2037 #endif 2038 2039 if (ieee80211_radiotap_active_vap(vap)) { 2040 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2041 tap->wt_flags = 0; 2042 tap->wt_rate = rate; 2043 tap->wt_hwqueue = ac; 2044 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) 2045 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2046 2047 ieee80211_radiotap_tx(vap, m0); 2048 } 2049 2050 /* save and trim IEEE802.11 header */ 2051 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 2052 m_adj(m0, hdrlen); 2053 2054 #if defined(__DragonFly__) 2055 error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map, 2056 m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 2057 #else 2058 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 2059 &nsegs, BUS_DMA_NOWAIT); 2060 #endif 2061 if (error != 0 && error != EFBIG) { 2062 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 2063 error); 2064 m_freem(m0); 2065 return error; 2066 } 2067 if (error != 0) { 2068 /* XXX use m_collapse */ 2069 mnew = m_defrag(m0, M_NOWAIT); 2070 if (mnew == NULL) { 2071 device_printf(sc->sc_dev, 2072 "could not defragment mbuf\n"); 2073 m_freem(m0); 2074 return ENOBUFS; 2075 } 2076 m0 = mnew; 2077 2078 #if defined(__DragonFly__) 2079 error = bus_dmamap_load_mbuf_segment(ring->data_dmat, 2080 data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 2081 #else 2082 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2083 m0, segs, &nsegs, BUS_DMA_NOWAIT); 2084 #endif 2085 if (error != 0) { 2086 device_printf(sc->sc_dev, 2087 "could not map mbuf (error %d)\n", error); 2088 m_freem(m0); 2089 return error; 2090 } 2091 } 2092 2093 data->m = m0; 2094 data->ni = ni; 2095 2096 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 2097 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 2098 2099 /* first scatter/gather segment is used by the tx data command */ 2100 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2101 (1 + nsegs) << 24); 2102 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2103 ring->cur * sizeof (struct wpi_tx_cmd)); 2104 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 2105 for (i = 1; i <= nsegs; i++) { 2106 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 2107 desc->segs[i].len = htole32(segs[i - 1].ds_len); 2108 } 2109 2110 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2111 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2112 BUS_DMASYNC_PREWRITE); 2113 2114 ring->queued++; 2115 2116 /* kick ring */ 2117 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2118 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2119 2120 return 0; 2121 } 2122 2123 /** 2124 * Process data waiting to be sent on the IFNET output queue 2125 */ 2126 static void 2127 wpi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 2128 { 2129 struct wpi_softc *sc = ifp->if_softc; 2130 2131 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 2132 2133 WPI_LOCK(sc); 2134 wpi_start_locked(ifp); 2135 WPI_UNLOCK(sc); 2136 } 2137 2138 static void 2139 wpi_start_locked(struct ifnet *ifp) 2140 { 2141 struct wpi_softc *sc = ifp->if_softc; 2142 struct ieee80211_node *ni; 2143 struct mbuf *m; 2144 int ac; 2145 2146 WPI_LOCK_ASSERT(sc); 2147 2148 #if defined(__DragonFly__) 2149 if ((ifp->if_flags & IFF_RUNNING) == 0) 2150 return; 2151 #else 2152 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2153 return; 2154 #endif 2155 2156 for (;;) { 2157 #if defined(__DragonFly__) 2158 m = ifq_dequeue(&ifp->if_snd); 2159 #else 2160 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2161 #endif 2162 if (m == NULL) 2163 break; 2164 ac = M_WME_GETAC(m); 2165 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2166 /* there is no place left in this ring */ 2167 #if defined(__DragonFly__) 2168 ifq_prepend(&ifp->if_snd, m); 2169 ifq_set_oactive(&ifp->if_snd); 2170 #else 2171 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2172 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2173 #endif 2174 break; 2175 } 2176 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2177 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2178 ieee80211_free_node(ni); 2179 #if defined(__DragonFly__) 2180 IFNET_STAT_INC(ifp, oerrors, 1); 2181 #else 2182 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2183 #endif 2184 break; 2185 } 2186 sc->sc_tx_timer = 5; 2187 } 2188 } 2189 2190 static int 2191 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2192 const struct ieee80211_bpf_params *params) 2193 { 2194 struct ieee80211com *ic = ni->ni_ic; 2195 struct ifnet *ifp = ic->ic_ifp; 2196 struct wpi_softc *sc = ifp->if_softc; 2197 2198 /* prevent management frames from being sent if we're not ready */ 2199 #if defined(__DragonFly__) 2200 if (!(ifp->if_flags & IFF_RUNNING)) { 2201 m_freem(m); 2202 ieee80211_free_node(ni); 2203 return ENETDOWN; 2204 } 2205 #else 2206 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2207 m_freem(m); 2208 ieee80211_free_node(ni); 2209 return ENETDOWN; 2210 } 2211 #endif 2212 WPI_LOCK(sc); 2213 2214 /* management frames go into ring 0 */ 2215 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2216 #if defined(__DragonFly__) 2217 ifq_set_oactive(&ifp->if_snd); 2218 #else 2219 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2220 #endif 2221 m_freem(m); 2222 WPI_UNLOCK(sc); 2223 ieee80211_free_node(ni); 2224 return ENOBUFS; /* XXX */ 2225 } 2226 2227 #if defined(__DragonFly__) 2228 IFNET_STAT_INC(ifp, opackets, 1); 2229 #else 2230 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 2231 #endif 2232 if (wpi_tx_data(sc, m, ni, 0) != 0) 2233 goto bad; 2234 sc->sc_tx_timer = 5; 2235 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2236 2237 WPI_UNLOCK(sc); 2238 return 0; 2239 bad: 2240 #if defined(__DragonFly__) 2241 IFNET_STAT_INC(ifp, oerrors, 1); 2242 #else 2243 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2244 #endif 2245 WPI_UNLOCK(sc); 2246 ieee80211_free_node(ni); 2247 return EIO; /* XXX */ 2248 } 2249 2250 static int 2251 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, 2252 struct ucred *cred __unused) 2253 { 2254 struct wpi_softc *sc = ifp->if_softc; 2255 struct ieee80211com *ic = ifp->if_l2com; 2256 struct ifreq *ifr = (struct ifreq *) data; 2257 int error = 0, startall = 0; 2258 2259 switch (cmd) { 2260 case SIOCSIFFLAGS: 2261 WPI_LOCK(sc); 2262 #if defined(__DragonFly__) 2263 if ((ifp->if_flags & IFF_UP)) { 2264 if (!(ifp->if_flags & IFF_RUNNING)) { 2265 wpi_init_locked(sc, 0); 2266 startall = 1; 2267 } 2268 } else if ((ifp->if_flags & IFF_RUNNING) || 2269 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2270 wpi_stop_locked(sc); 2271 #else 2272 if ((ifp->if_flags & IFF_UP)) { 2273 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2274 wpi_init_locked(sc, 0); 2275 startall = 1; 2276 } 2277 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2278 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2279 wpi_stop_locked(sc); 2280 #endif 2281 WPI_UNLOCK(sc); 2282 if (startall) 2283 ieee80211_start_all(ic); 2284 break; 2285 case SIOCGIFMEDIA: 2286 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2287 break; 2288 case SIOCGIFADDR: 2289 error = ether_ioctl(ifp, cmd, data); 2290 break; 2291 default: 2292 error = EINVAL; 2293 break; 2294 } 2295 return error; 2296 } 2297 2298 /* 2299 * Extract various information from EEPROM. 2300 */ 2301 static void 2302 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2303 { 2304 int i; 2305 2306 /* read the hardware capabilities, revision and SKU type */ 2307 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2308 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2309 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2310 2311 /* read the regulatory domain */ 2312 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2313 2314 /* read in the hw MAC address */ 2315 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2316 2317 /* read the list of authorized channels */ 2318 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2319 wpi_read_eeprom_channels(sc,i); 2320 2321 /* read the power level calibration info for each group */ 2322 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2323 wpi_read_eeprom_group(sc,i); 2324 } 2325 2326 /* 2327 * Send a command to the firmware. 2328 */ 2329 static int 2330 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2331 { 2332 struct wpi_tx_ring *ring = &sc->cmdq; 2333 struct wpi_tx_desc *desc; 2334 struct wpi_tx_cmd *cmd; 2335 2336 #ifdef WPI_DEBUG 2337 if (!async) { 2338 WPI_LOCK_ASSERT(sc); 2339 } 2340 #endif 2341 2342 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2343 async)); 2344 2345 if (sc->flags & WPI_FLAG_BUSY) { 2346 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2347 __func__, code); 2348 return EAGAIN; 2349 } 2350 sc->flags|= WPI_FLAG_BUSY; 2351 2352 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2353 code, size)); 2354 2355 desc = &ring->desc[ring->cur]; 2356 cmd = &ring->cmd[ring->cur]; 2357 2358 cmd->code = code; 2359 cmd->flags = 0; 2360 cmd->qid = ring->qid; 2361 cmd->idx = ring->cur; 2362 memcpy(cmd->data, buf, size); 2363 2364 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2365 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2366 ring->cur * sizeof (struct wpi_tx_cmd)); 2367 desc->segs[0].len = htole32(4 + size); 2368 2369 /* kick cmd ring */ 2370 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2371 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2372 2373 if (async) { 2374 sc->flags &= ~ WPI_FLAG_BUSY; 2375 return 0; 2376 } 2377 2378 #if defined(__DragonFly__) 2379 return wpi_sleep(sc, cmd, PCATCH, "wpicmd", hz); 2380 #else 2381 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2382 #endif 2383 } 2384 2385 static int 2386 wpi_wme_update(struct ieee80211com *ic) 2387 { 2388 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2389 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2390 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2391 const struct wmeParams *wmep; 2392 struct wpi_wme_setup wme; 2393 int ac; 2394 2395 /* don't override default WME values if WME is not actually enabled */ 2396 if (!(ic->ic_flags & IEEE80211_F_WME)) 2397 return 0; 2398 2399 wme.flags = 0; 2400 for (ac = 0; ac < WME_NUM_AC; ac++) { 2401 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2402 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2403 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2404 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2405 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2406 2407 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2408 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2409 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2410 } 2411 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2412 #undef WPI_USEC 2413 #undef WPI_EXP2 2414 } 2415 2416 /* 2417 * Configure h/w multi-rate retries. 2418 */ 2419 static int 2420 wpi_mrr_setup(struct wpi_softc *sc) 2421 { 2422 struct ifnet *ifp = sc->sc_ifp; 2423 struct ieee80211com *ic = ifp->if_l2com; 2424 struct wpi_mrr_setup mrr; 2425 int i, error; 2426 2427 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2428 2429 /* CCK rates (not used with 802.11a) */ 2430 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2431 mrr.rates[i].flags = 0; 2432 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2433 /* fallback to the immediate lower CCK rate (if any) */ 2434 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2435 /* try one time at this rate before falling back to "next" */ 2436 mrr.rates[i].ntries = 1; 2437 } 2438 2439 /* OFDM rates (not used with 802.11b) */ 2440 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2441 mrr.rates[i].flags = 0; 2442 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2443 /* fallback to the immediate lower OFDM rate (if any) */ 2444 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2445 mrr.rates[i].next = (i == WPI_OFDM6) ? 2446 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2447 WPI_OFDM6 : WPI_CCK2) : 2448 i - 1; 2449 /* try one time at this rate before falling back to "next" */ 2450 mrr.rates[i].ntries = 1; 2451 } 2452 2453 /* setup MRR for control frames */ 2454 mrr.which = WPI_MRR_CTL; 2455 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2456 if (error != 0) { 2457 device_printf(sc->sc_dev, 2458 "could not setup MRR for control frames\n"); 2459 return error; 2460 } 2461 2462 /* setup MRR for data frames */ 2463 mrr.which = WPI_MRR_DATA; 2464 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2465 if (error != 0) { 2466 device_printf(sc->sc_dev, 2467 "could not setup MRR for data frames\n"); 2468 return error; 2469 } 2470 2471 return 0; 2472 } 2473 2474 static void 2475 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2476 { 2477 struct wpi_cmd_led led; 2478 2479 led.which = which; 2480 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2481 led.off = off; 2482 led.on = on; 2483 2484 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2485 } 2486 2487 static void 2488 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2489 { 2490 struct wpi_cmd_tsf tsf; 2491 uint64_t val, mod; 2492 2493 memset(&tsf, 0, sizeof tsf); 2494 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2495 tsf.bintval = htole16(ni->ni_intval); 2496 tsf.lintval = htole16(10); 2497 2498 /* compute remaining time until next beacon */ 2499 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2500 mod = le64toh(tsf.tstamp) % val; 2501 tsf.binitval = htole32((uint32_t)(val - mod)); 2502 2503 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2504 device_printf(sc->sc_dev, "could not enable TSF\n"); 2505 } 2506 2507 #if 0 2508 /* 2509 * Build a beacon frame that the firmware will broadcast periodically in 2510 * IBSS or HostAP modes. 2511 */ 2512 static int 2513 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2514 { 2515 struct ifnet *ifp = sc->sc_ifp; 2516 struct ieee80211com *ic = ifp->if_l2com; 2517 struct wpi_tx_ring *ring = &sc->cmdq; 2518 struct wpi_tx_desc *desc; 2519 struct wpi_tx_data *data; 2520 struct wpi_tx_cmd *cmd; 2521 struct wpi_cmd_beacon *bcn; 2522 struct ieee80211_beacon_offsets bo; 2523 struct mbuf *m0; 2524 bus_addr_t physaddr; 2525 int error; 2526 2527 desc = &ring->desc[ring->cur]; 2528 data = &ring->data[ring->cur]; 2529 2530 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2531 if (m0 == NULL) { 2532 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2533 return ENOMEM; 2534 } 2535 2536 cmd = &ring->cmd[ring->cur]; 2537 cmd->code = WPI_CMD_SET_BEACON; 2538 cmd->flags = 0; 2539 cmd->qid = ring->qid; 2540 cmd->idx = ring->cur; 2541 2542 bcn = (struct wpi_cmd_beacon *)cmd->data; 2543 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2544 bcn->id = WPI_ID_BROADCAST; 2545 bcn->ofdm_mask = 0xff; 2546 bcn->cck_mask = 0x0f; 2547 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2548 bcn->len = htole16(m0->m_pkthdr.len); 2549 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2550 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2551 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2552 2553 /* save and trim IEEE802.11 header */ 2554 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2555 m_adj(m0, sizeof (struct ieee80211_frame)); 2556 2557 /* assume beacon frame is contiguous */ 2558 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2559 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2560 if (error != 0) { 2561 device_printf(sc->sc_dev, "could not map beacon\n"); 2562 m_freem(m0); 2563 return error; 2564 } 2565 2566 data->m = m0; 2567 2568 /* first scatter/gather segment is used by the beacon command */ 2569 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2570 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2571 ring->cur * sizeof (struct wpi_tx_cmd)); 2572 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2573 desc->segs[1].addr = htole32(physaddr); 2574 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2575 2576 /* kick cmd ring */ 2577 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2578 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2579 2580 return 0; 2581 } 2582 #endif 2583 2584 static int 2585 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2586 { 2587 struct ieee80211com *ic = vap->iv_ic; 2588 struct ieee80211_node *ni = vap->iv_bss; 2589 struct wpi_node_info node; 2590 int error; 2591 2592 2593 /* update adapter's configuration */ 2594 sc->config.associd = 0; 2595 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2596 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2597 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2598 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2599 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2600 WPI_CONFIG_24GHZ); 2601 } else { 2602 sc->config.flags &= ~htole32(WPI_CONFIG_AUTO | 2603 WPI_CONFIG_24GHZ); 2604 } 2605 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2606 sc->config.cck_mask = 0; 2607 sc->config.ofdm_mask = 0x15; 2608 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2609 sc->config.cck_mask = 0x03; 2610 sc->config.ofdm_mask = 0; 2611 } else { 2612 /* XXX assume 802.11b/g */ 2613 sc->config.cck_mask = 0x0f; 2614 sc->config.ofdm_mask = 0x15; 2615 } 2616 2617 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2618 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2619 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2620 sizeof (struct wpi_config), 1); 2621 if (error != 0) { 2622 device_printf(sc->sc_dev, "could not configure\n"); 2623 return error; 2624 } 2625 2626 /* configuration has changed, set Tx power accordingly */ 2627 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2628 device_printf(sc->sc_dev, "could not set Tx power\n"); 2629 return error; 2630 } 2631 2632 /* add default node */ 2633 memset(&node, 0, sizeof node); 2634 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2635 node.id = WPI_ID_BSS; 2636 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2637 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2638 node.action = htole32(WPI_ACTION_SET_RATE); 2639 node.antenna = WPI_ANTENNA_BOTH; 2640 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2641 if (error != 0) 2642 device_printf(sc->sc_dev, "could not add BSS node\n"); 2643 2644 return (error); 2645 } 2646 2647 static int 2648 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2649 { 2650 struct ieee80211com *ic = vap->iv_ic; 2651 struct ieee80211_node *ni = vap->iv_bss; 2652 int error; 2653 2654 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2655 /* link LED blinks while monitoring */ 2656 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2657 return 0; 2658 } 2659 2660 wpi_enable_tsf(sc, ni); 2661 2662 /* update adapter's configuration */ 2663 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2664 /* short preamble/slot time are negotiated when associating */ 2665 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2666 WPI_CONFIG_SHSLOT); 2667 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2668 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2669 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2670 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2671 sc->config.filter |= htole32(WPI_FILTER_BSS); 2672 2673 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2674 2675 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2676 sc->config.flags)); 2677 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2678 wpi_config), 1); 2679 if (error != 0) { 2680 device_printf(sc->sc_dev, "could not update configuration\n"); 2681 return error; 2682 } 2683 2684 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2685 if (error != 0) { 2686 device_printf(sc->sc_dev, "could set txpower\n"); 2687 return error; 2688 } 2689 2690 /* link LED always on while associated */ 2691 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2692 2693 /* start automatic rate control timer */ 2694 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2695 2696 return (error); 2697 } 2698 2699 /* 2700 * Send a scan request to the firmware. Since this command is huge, we map it 2701 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2702 * much of this code is similar to that in wpi_cmd but because we must manually 2703 * construct the probe & channels, we duplicate what's needed here. XXX In the 2704 * future, this function should be modified to use wpi_cmd to help cleanup the 2705 * code base. 2706 */ 2707 static int 2708 wpi_scan(struct wpi_softc *sc) 2709 { 2710 struct ifnet *ifp = sc->sc_ifp; 2711 struct ieee80211com *ic = ifp->if_l2com; 2712 struct ieee80211_scan_state *ss = ic->ic_scan; 2713 struct wpi_tx_ring *ring = &sc->cmdq; 2714 struct wpi_tx_desc *desc; 2715 struct wpi_tx_data *data; 2716 struct wpi_tx_cmd *cmd; 2717 struct wpi_scan_hdr *hdr; 2718 struct wpi_scan_chan *chan; 2719 struct ieee80211_frame *wh; 2720 struct ieee80211_rateset *rs; 2721 struct ieee80211_channel *c; 2722 enum ieee80211_phymode mode; 2723 uint8_t *frm; 2724 int pktlen, error, i, nssid; 2725 bus_addr_t physaddr; 2726 2727 desc = &ring->desc[ring->cur]; 2728 data = &ring->data[ring->cur]; 2729 2730 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 2731 if (data->m == NULL) { 2732 device_printf(sc->sc_dev, 2733 "could not allocate mbuf for scan command\n"); 2734 return ENOMEM; 2735 } 2736 2737 cmd = mtod(data->m, struct wpi_tx_cmd *); 2738 cmd->code = WPI_CMD_SCAN; 2739 cmd->flags = 0; 2740 cmd->qid = ring->qid; 2741 cmd->idx = ring->cur; 2742 2743 hdr = (struct wpi_scan_hdr *)cmd->data; 2744 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2745 2746 /* 2747 * Move to the next channel if no packets are received within 5 msecs 2748 * after sending the probe request (this helps to reduce the duration 2749 * of active scans). 2750 */ 2751 hdr->quiet = htole16(5); 2752 hdr->threshold = htole16(1); 2753 2754 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2755 /* send probe requests at 6Mbps */ 2756 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2757 2758 /* Enable crc checking */ 2759 hdr->promotion = htole16(1); 2760 } else { 2761 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2762 /* send probe requests at 1Mbps */ 2763 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2764 } 2765 hdr->tx.id = WPI_ID_BROADCAST; 2766 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2767 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2768 2769 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2770 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2771 for (i = 0; i < nssid; i++) { 2772 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2773 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 2774 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2775 hdr->scan_essids[i].esslen); 2776 #ifdef WPI_DEBUG 2777 if (wpi_debug & WPI_DEBUG_SCANNING) { 2778 kprintf("Scanning Essid: "); 2779 ieee80211_print_essid(hdr->scan_essids[i].essid, 2780 hdr->scan_essids[i].esslen); 2781 kprintf("\n"); 2782 } 2783 #endif 2784 } 2785 2786 /* 2787 * Build a probe request frame. Most of the following code is a 2788 * copy & paste of what is done in net80211. 2789 */ 2790 wh = (struct ieee80211_frame *)&hdr->scan_essids[WPI_SCAN_MAX_ESSIDS]; 2791 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2792 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2793 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2794 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2795 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2796 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2797 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2798 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2799 2800 frm = (uint8_t *)(wh + 1); 2801 2802 mode = ieee80211_chan2mode(ic->ic_curchan); 2803 rs = &ic->ic_sup_rates[mode]; 2804 2805 frm = ieee80211_add_ssid(frm, NULL, 0); 2806 frm = ieee80211_add_rates(frm, rs); 2807 frm = ieee80211_add_xrates(frm, rs); 2808 2809 /* setup length of probe request */ 2810 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2811 2812 /* 2813 * Construct information about the channel that we 2814 * want to scan. The firmware expects this to be directly 2815 * after the scan probe request 2816 */ 2817 c = ic->ic_curchan; 2818 chan = (struct wpi_scan_chan *)frm; 2819 chan->chan = ieee80211_chan2ieee(ic, c); 2820 chan->flags = 0; 2821 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2822 chan->flags |= WPI_CHAN_ACTIVE; 2823 if (nssid != 0) 2824 chan->flags |= WPI_CHAN_DIRECT; 2825 } 2826 chan->gain_dsp = 0x6e; /* Default level */ 2827 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2828 chan->active = htole16(10); 2829 chan->passive = htole16(ss->ss_maxdwell); 2830 chan->gain_radio = 0x3b; 2831 } else { 2832 chan->active = htole16(20); 2833 chan->passive = htole16(ss->ss_maxdwell); 2834 chan->gain_radio = 0x28; 2835 } 2836 2837 DPRINTFN(WPI_DEBUG_SCANNING, 2838 ("Scanning %u Passive: %d\n", 2839 chan->chan, 2840 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2841 2842 hdr->nchan++; 2843 chan++; 2844 2845 frm += sizeof (struct wpi_scan_chan); 2846 #if 0 2847 // XXX All Channels.... 2848 for (c = &ic->ic_channels[1]; 2849 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2850 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2851 continue; 2852 2853 chan->chan = ieee80211_chan2ieee(ic, c); 2854 chan->flags = 0; 2855 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2856 chan->flags |= WPI_CHAN_ACTIVE; 2857 if (ic->ic_des_ssid[0].len != 0) 2858 chan->flags |= WPI_CHAN_DIRECT; 2859 } 2860 chan->gain_dsp = 0x6e; /* Default level */ 2861 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2862 chan->active = htole16(10); 2863 chan->passive = htole16(110); 2864 chan->gain_radio = 0x3b; 2865 } else { 2866 chan->active = htole16(20); 2867 chan->passive = htole16(120); 2868 chan->gain_radio = 0x28; 2869 } 2870 2871 DPRINTFN(WPI_DEBUG_SCANNING, 2872 ("Scanning %u Passive: %d\n", 2873 chan->chan, 2874 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2875 2876 hdr->nchan++; 2877 chan++; 2878 2879 frm += sizeof (struct wpi_scan_chan); 2880 } 2881 #endif 2882 2883 hdr->len = htole16(frm - (uint8_t *)hdr); 2884 pktlen = frm - (uint8_t *)cmd; 2885 2886 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2887 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2888 if (error != 0) { 2889 device_printf(sc->sc_dev, "could not map scan command\n"); 2890 m_freem(data->m); 2891 data->m = NULL; 2892 return error; 2893 } 2894 2895 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2896 desc->segs[0].addr = htole32(physaddr); 2897 desc->segs[0].len = htole32(pktlen); 2898 2899 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2900 BUS_DMASYNC_PREWRITE); 2901 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2902 2903 /* kick cmd ring */ 2904 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2905 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2906 2907 sc->sc_scan_timer = 5; 2908 return 0; /* will be notified async. of failure/success */ 2909 } 2910 2911 /** 2912 * Configure the card to listen to a particular channel, this transisions the 2913 * card in to being able to receive frames from remote devices. 2914 */ 2915 static int 2916 wpi_config(struct wpi_softc *sc) 2917 { 2918 struct ifnet *ifp = sc->sc_ifp; 2919 struct ieee80211com *ic = ifp->if_l2com; 2920 struct wpi_power power; 2921 struct wpi_bluetooth bluetooth; 2922 struct wpi_node_info node; 2923 int error; 2924 2925 /* set power mode */ 2926 memset(&power, 0, sizeof power); 2927 power.flags = htole32(WPI_POWER_CAM|0x8); 2928 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2929 if (error != 0) { 2930 device_printf(sc->sc_dev, "could not set power mode\n"); 2931 return error; 2932 } 2933 2934 /* configure bluetooth coexistence */ 2935 memset(&bluetooth, 0, sizeof bluetooth); 2936 bluetooth.flags = 3; 2937 bluetooth.lead = 0xaa; 2938 bluetooth.kill = 1; 2939 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2940 0); 2941 if (error != 0) { 2942 device_printf(sc->sc_dev, 2943 "could not configure bluetooth coexistence\n"); 2944 return error; 2945 } 2946 2947 /* configure adapter */ 2948 memset(&sc->config, 0, sizeof (struct wpi_config)); 2949 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2950 /*set default channel*/ 2951 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2952 sc->config.flags = htole32(WPI_CONFIG_TSF); 2953 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2954 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2955 WPI_CONFIG_24GHZ); 2956 } 2957 sc->config.filter = 0; 2958 switch (ic->ic_opmode) { 2959 case IEEE80211_M_STA: 2960 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2961 sc->config.mode = WPI_MODE_STA; 2962 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2963 break; 2964 case IEEE80211_M_IBSS: 2965 case IEEE80211_M_AHDEMO: 2966 sc->config.mode = WPI_MODE_IBSS; 2967 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2968 WPI_FILTER_MULTICAST); 2969 break; 2970 case IEEE80211_M_HOSTAP: 2971 sc->config.mode = WPI_MODE_HOSTAP; 2972 break; 2973 case IEEE80211_M_MONITOR: 2974 sc->config.mode = WPI_MODE_MONITOR; 2975 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2976 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2977 break; 2978 default: 2979 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2980 return EINVAL; 2981 } 2982 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2983 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2984 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2985 sizeof (struct wpi_config), 0); 2986 if (error != 0) { 2987 device_printf(sc->sc_dev, "configure command failed\n"); 2988 return error; 2989 } 2990 2991 /* configuration has changed, set Tx power accordingly */ 2992 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2993 device_printf(sc->sc_dev, "could not set Tx power\n"); 2994 return error; 2995 } 2996 2997 /* add broadcast node */ 2998 memset(&node, 0, sizeof node); 2999 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 3000 node.id = WPI_ID_BROADCAST; 3001 node.rate = wpi_plcp_signal(2); 3002 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 3003 if (error != 0) { 3004 device_printf(sc->sc_dev, "could not add broadcast node\n"); 3005 return error; 3006 } 3007 3008 /* Setup rate scalling */ 3009 error = wpi_mrr_setup(sc); 3010 if (error != 0) { 3011 device_printf(sc->sc_dev, "could not setup MRR\n"); 3012 return error; 3013 } 3014 3015 return 0; 3016 } 3017 3018 static void 3019 wpi_stop_master(struct wpi_softc *sc) 3020 { 3021 uint32_t tmp; 3022 int ntries; 3023 3024 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 3025 3026 tmp = WPI_READ(sc, WPI_RESET); 3027 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 3028 3029 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3030 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 3031 return; /* already asleep */ 3032 3033 for (ntries = 0; ntries < 100; ntries++) { 3034 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 3035 break; 3036 DELAY(10); 3037 } 3038 if (ntries == 100) { 3039 device_printf(sc->sc_dev, "timeout waiting for master\n"); 3040 } 3041 } 3042 3043 static int 3044 wpi_power_up(struct wpi_softc *sc) 3045 { 3046 uint32_t tmp; 3047 int ntries; 3048 3049 wpi_mem_lock(sc); 3050 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 3051 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 3052 wpi_mem_unlock(sc); 3053 3054 for (ntries = 0; ntries < 5000; ntries++) { 3055 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 3056 break; 3057 DELAY(10); 3058 } 3059 if (ntries == 5000) { 3060 device_printf(sc->sc_dev, 3061 "timeout waiting for NIC to power up\n"); 3062 return ETIMEDOUT; 3063 } 3064 return 0; 3065 } 3066 3067 static int 3068 wpi_reset(struct wpi_softc *sc) 3069 { 3070 uint32_t tmp; 3071 int ntries; 3072 3073 DPRINTFN(WPI_DEBUG_HW, 3074 ("Resetting the card - clearing any uploaded firmware\n")); 3075 3076 /* clear any pending interrupts */ 3077 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3078 3079 tmp = WPI_READ(sc, WPI_PLL_CTL); 3080 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 3081 3082 tmp = WPI_READ(sc, WPI_CHICKEN); 3083 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 3084 3085 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3086 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 3087 3088 /* wait for clock stabilization */ 3089 for (ntries = 0; ntries < 25000; ntries++) { 3090 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 3091 break; 3092 DELAY(10); 3093 } 3094 if (ntries == 25000) { 3095 device_printf(sc->sc_dev, 3096 "timeout waiting for clock stabilization\n"); 3097 return ETIMEDOUT; 3098 } 3099 3100 /* initialize EEPROM */ 3101 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3102 3103 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3104 device_printf(sc->sc_dev, "EEPROM not found\n"); 3105 return EIO; 3106 } 3107 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3108 3109 return 0; 3110 } 3111 3112 static void 3113 wpi_hw_config(struct wpi_softc *sc) 3114 { 3115 uint32_t rev, hw; 3116 3117 /* voodoo from the Linux "driver".. */ 3118 hw = WPI_READ(sc, WPI_HWCONFIG); 3119 3120 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 3121 if ((rev & 0xc0) == 0x40) 3122 hw |= WPI_HW_ALM_MB; 3123 else if (!(rev & 0x80)) 3124 hw |= WPI_HW_ALM_MM; 3125 3126 if (sc->cap == 0x80) 3127 hw |= WPI_HW_SKU_MRC; 3128 3129 hw &= ~WPI_HW_REV_D; 3130 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3131 hw |= WPI_HW_REV_D; 3132 3133 if (sc->type > 1) 3134 hw |= WPI_HW_TYPE_B; 3135 3136 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3137 } 3138 3139 static void 3140 wpi_rfkill_resume(struct wpi_softc *sc) 3141 { 3142 struct ifnet *ifp = sc->sc_ifp; 3143 struct ieee80211com *ic = ifp->if_l2com; 3144 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3145 int ntries; 3146 3147 /* enable firmware again */ 3148 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3149 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3150 3151 /* wait for thermal sensors to calibrate */ 3152 for (ntries = 0; ntries < 1000; ntries++) { 3153 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3154 break; 3155 DELAY(10); 3156 } 3157 3158 if (ntries == 1000) { 3159 device_printf(sc->sc_dev, 3160 "timeout waiting for thermal calibration\n"); 3161 return; 3162 } 3163 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3164 3165 if (wpi_config(sc) != 0) { 3166 device_printf(sc->sc_dev, "device config failed\n"); 3167 return; 3168 } 3169 3170 #if defined(__DragonFly__) 3171 ifq_clr_oactive(&ifp->if_snd); 3172 ifp->if_flags |= IFF_RUNNING; 3173 #else 3174 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3175 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3176 #endif 3177 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3178 3179 if (vap != NULL) { 3180 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3181 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3182 ieee80211_beacon_miss(ic); 3183 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3184 } else 3185 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3186 } else { 3187 ieee80211_scan_next(vap); 3188 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3189 } 3190 } 3191 3192 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3193 } 3194 3195 static void 3196 wpi_init_locked(struct wpi_softc *sc, int force) 3197 { 3198 struct ifnet *ifp = sc->sc_ifp; 3199 uint32_t tmp; 3200 int ntries, qid; 3201 3202 wpi_stop_locked(sc); 3203 (void)wpi_reset(sc); 3204 3205 wpi_mem_lock(sc); 3206 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3207 DELAY(20); 3208 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3209 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3210 wpi_mem_unlock(sc); 3211 3212 (void)wpi_power_up(sc); 3213 wpi_hw_config(sc); 3214 3215 /* init Rx ring */ 3216 wpi_mem_lock(sc); 3217 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3218 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3219 offsetof(struct wpi_shared, next)); 3220 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3221 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3222 wpi_mem_unlock(sc); 3223 3224 /* init Tx rings */ 3225 wpi_mem_lock(sc); 3226 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3227 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3228 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3229 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3230 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3231 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3232 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3233 3234 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3235 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3236 3237 for (qid = 0; qid < 6; qid++) { 3238 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3239 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3240 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3241 } 3242 wpi_mem_unlock(sc); 3243 3244 /* clear "radio off" and "disable command" bits (reversed logic) */ 3245 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3246 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3247 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3248 3249 /* clear any pending interrupts */ 3250 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3251 3252 /* enable interrupts */ 3253 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3254 3255 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3256 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3257 3258 if ((wpi_load_firmware(sc)) != 0) { 3259 device_printf(sc->sc_dev, 3260 "A problem occurred loading the firmware to the driver\n"); 3261 return; 3262 } 3263 3264 /* At this point the firmware is up and running. If the hardware 3265 * RF switch is turned off thermal calibration will fail, though 3266 * the card is still happy to continue to accept commands, catch 3267 * this case and schedule a task to watch for it to be turned on. 3268 */ 3269 wpi_mem_lock(sc); 3270 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3271 wpi_mem_unlock(sc); 3272 3273 if (!(tmp & 0x1)) { 3274 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3275 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3276 goto out; 3277 } 3278 3279 /* wait for thermal sensors to calibrate */ 3280 for (ntries = 0; ntries < 1000; ntries++) { 3281 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3282 break; 3283 DELAY(10); 3284 } 3285 3286 if (ntries == 1000) { 3287 device_printf(sc->sc_dev, 3288 "timeout waiting for thermal sensors calibration\n"); 3289 return; 3290 } 3291 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3292 3293 if (wpi_config(sc) != 0) { 3294 device_printf(sc->sc_dev, "device config failed\n"); 3295 return; 3296 } 3297 3298 #if defined(__DragonFly__) 3299 ifq_clr_oactive(&ifp->if_snd); 3300 ifp->if_flags |= IFF_RUNNING; 3301 #else 3302 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3303 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3304 #endif 3305 out: 3306 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3307 } 3308 3309 static void 3310 wpi_init(void *arg) 3311 { 3312 struct wpi_softc *sc = arg; 3313 struct ifnet *ifp = sc->sc_ifp; 3314 struct ieee80211com *ic = ifp->if_l2com; 3315 3316 WPI_LOCK(sc); 3317 wpi_init_locked(sc, 0); 3318 WPI_UNLOCK(sc); 3319 3320 #if defined(__DragonFly__) 3321 if (ifp->if_flags & IFF_RUNNING) 3322 ieee80211_start_all(ic); /* start all vaps */ 3323 #else 3324 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3325 ieee80211_start_all(ic); /* start all vaps */ 3326 #endif 3327 } 3328 3329 static void 3330 wpi_stop_locked(struct wpi_softc *sc) 3331 { 3332 struct ifnet *ifp = sc->sc_ifp; 3333 uint32_t tmp; 3334 int ac; 3335 3336 sc->sc_tx_timer = 0; 3337 sc->sc_scan_timer = 0; 3338 #if defined(__DragonFly__) 3339 ifq_clr_oactive(&ifp->if_snd); 3340 ifp->if_flags &= ~IFF_RUNNING; 3341 #else 3342 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3343 #endif 3344 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3345 callout_stop_sync(&sc->watchdog_to); 3346 callout_stop_sync(&sc->calib_to); 3347 3348 /* disable interrupts */ 3349 WPI_WRITE(sc, WPI_MASK, 0); 3350 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3351 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3352 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3353 3354 wpi_mem_lock(sc); 3355 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3356 wpi_mem_unlock(sc); 3357 3358 /* reset all Tx rings */ 3359 for (ac = 0; ac < 4; ac++) 3360 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3361 wpi_reset_tx_ring(sc, &sc->cmdq); 3362 3363 /* reset Rx ring */ 3364 wpi_reset_rx_ring(sc, &sc->rxq); 3365 3366 wpi_mem_lock(sc); 3367 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3368 wpi_mem_unlock(sc); 3369 3370 DELAY(5); 3371 3372 wpi_stop_master(sc); 3373 3374 tmp = WPI_READ(sc, WPI_RESET); 3375 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3376 sc->flags &= ~WPI_FLAG_BUSY; 3377 } 3378 3379 static void 3380 wpi_stop(struct wpi_softc *sc) 3381 { 3382 WPI_LOCK(sc); 3383 wpi_stop_locked(sc); 3384 WPI_UNLOCK(sc); 3385 } 3386 3387 static void 3388 wpi_calib_timeout(void *arg) 3389 { 3390 struct wpi_softc *sc = arg; 3391 struct ifnet *ifp = sc->sc_ifp; 3392 struct ieee80211com *ic = ifp->if_l2com; 3393 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3394 int temp; 3395 3396 if (vap->iv_state != IEEE80211_S_RUN) 3397 return; 3398 3399 /* update sensor data */ 3400 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3401 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3402 3403 wpi_power_calibration(sc, temp); 3404 3405 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3406 } 3407 3408 /* 3409 * This function is called periodically (every 60 seconds) to adjust output 3410 * power to temperature changes. 3411 */ 3412 static void 3413 wpi_power_calibration(struct wpi_softc *sc, int temp) 3414 { 3415 struct ifnet *ifp = sc->sc_ifp; 3416 struct ieee80211com *ic = ifp->if_l2com; 3417 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3418 3419 /* sanity-check read value */ 3420 if (temp < -260 || temp > 25) { 3421 /* this can't be correct, ignore */ 3422 DPRINTFN(WPI_DEBUG_TEMP, 3423 ("out-of-range temperature reported: %d\n", temp)); 3424 return; 3425 } 3426 3427 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3428 3429 /* adjust Tx power if need be */ 3430 if (abs(temp - sc->temp) <= 6) 3431 return; 3432 3433 sc->temp = temp; 3434 3435 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3436 /* just warn, too bad for the automatic calibration... */ 3437 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3438 } 3439 } 3440 3441 /** 3442 * Read the eeprom to find out what channels are valid for the given 3443 * band and update net80211 with what we find. 3444 */ 3445 static void 3446 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3447 { 3448 struct ifnet *ifp = sc->sc_ifp; 3449 struct ieee80211com *ic = ifp->if_l2com; 3450 const struct wpi_chan_band *band = &wpi_bands[n]; 3451 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3452 struct ieee80211_channel *c; 3453 int chan, i, passive; 3454 3455 wpi_read_prom_data(sc, band->addr, channels, 3456 band->nchan * sizeof (struct wpi_eeprom_chan)); 3457 3458 for (i = 0; i < band->nchan; i++) { 3459 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3460 DPRINTFN(WPI_DEBUG_HW, 3461 ("Channel Not Valid: %d, band %d\n", 3462 band->chan[i],n)); 3463 continue; 3464 } 3465 3466 passive = 0; 3467 chan = band->chan[i]; 3468 c = &ic->ic_channels[ic->ic_nchans++]; 3469 3470 /* is active scan allowed on this channel? */ 3471 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3472 passive = IEEE80211_CHAN_PASSIVE; 3473 } 3474 3475 if (n == 0) { /* 2GHz band */ 3476 c->ic_ieee = chan; 3477 c->ic_freq = ieee80211_ieee2mhz(chan, 3478 IEEE80211_CHAN_2GHZ); 3479 c->ic_flags = IEEE80211_CHAN_B | passive; 3480 3481 c = &ic->ic_channels[ic->ic_nchans++]; 3482 c->ic_ieee = chan; 3483 c->ic_freq = ieee80211_ieee2mhz(chan, 3484 IEEE80211_CHAN_2GHZ); 3485 c->ic_flags = IEEE80211_CHAN_G | passive; 3486 3487 } else { /* 5GHz band */ 3488 /* 3489 * Some 3945ABG adapters support channels 7, 8, 11 3490 * and 12 in the 2GHz *and* 5GHz bands. 3491 * Because of limitations in our net80211(9) stack, 3492 * we can't support these channels in 5GHz band. 3493 * XXX not true; just need to map to proper frequency 3494 */ 3495 if (chan <= 14) 3496 continue; 3497 3498 c->ic_ieee = chan; 3499 c->ic_freq = ieee80211_ieee2mhz(chan, 3500 IEEE80211_CHAN_5GHZ); 3501 c->ic_flags = IEEE80211_CHAN_A | passive; 3502 } 3503 3504 /* save maximum allowed power for this channel */ 3505 sc->maxpwr[chan] = channels[i].maxpwr; 3506 3507 #if 0 3508 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3509 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3510 //ic->ic_channels[chan].ic_minpower... 3511 //ic->ic_channels[chan].ic_maxregtxpower... 3512 #endif 3513 3514 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3515 " passive=%d, offset %d\n", chan, c->ic_freq, 3516 channels[i].flags, sc->maxpwr[chan], 3517 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3518 ic->ic_nchans)); 3519 } 3520 } 3521 3522 static void 3523 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3524 { 3525 struct wpi_power_group *group = &sc->groups[n]; 3526 struct wpi_eeprom_group rgroup; 3527 int i; 3528 3529 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3530 sizeof rgroup); 3531 3532 /* save power group information */ 3533 group->chan = rgroup.chan; 3534 group->maxpwr = rgroup.maxpwr; 3535 /* temperature at which the samples were taken */ 3536 group->temp = (int16_t)le16toh(rgroup.temp); 3537 3538 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3539 group->chan, group->maxpwr, group->temp)); 3540 3541 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3542 group->samples[i].index = rgroup.samples[i].index; 3543 group->samples[i].power = rgroup.samples[i].power; 3544 3545 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3546 group->samples[i].index, group->samples[i].power)); 3547 } 3548 } 3549 3550 /* 3551 * Update Tx power to match what is defined for channel `c'. 3552 */ 3553 static int 3554 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3555 { 3556 struct ifnet *ifp = sc->sc_ifp; 3557 struct ieee80211com *ic = ifp->if_l2com; 3558 struct wpi_power_group *group; 3559 struct wpi_cmd_txpower txpower; 3560 u_int chan; 3561 int i; 3562 3563 /* get channel number */ 3564 chan = ieee80211_chan2ieee(ic, c); 3565 3566 /* find the power group to which this channel belongs */ 3567 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3568 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3569 if (chan <= group->chan) 3570 break; 3571 } else 3572 group = &sc->groups[0]; 3573 3574 memset(&txpower, 0, sizeof txpower); 3575 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3576 txpower.channel = htole16(chan); 3577 3578 /* set Tx power for all OFDM and CCK rates */ 3579 for (i = 0; i <= 11 ; i++) { 3580 /* retrieve Tx power for this channel/rate combination */ 3581 int idx = wpi_get_power_index(sc, group, c, 3582 wpi_ridx_to_rate[i]); 3583 3584 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3585 3586 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3587 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3588 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3589 } else { 3590 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3591 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3592 } 3593 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3594 chan, wpi_ridx_to_rate[i], idx)); 3595 } 3596 3597 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3598 } 3599 3600 /* 3601 * Determine Tx power index for a given channel/rate combination. 3602 * This takes into account the regulatory information from EEPROM and the 3603 * current temperature. 3604 */ 3605 static int 3606 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3607 struct ieee80211_channel *c, int rate) 3608 { 3609 /* fixed-point arithmetic division using a n-bit fractional part */ 3610 #define fdivround(a, b, n) \ 3611 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3612 3613 /* linear interpolation */ 3614 #define interpolate(x, x1, y1, x2, y2, n) \ 3615 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3616 3617 struct ifnet *ifp = sc->sc_ifp; 3618 struct ieee80211com *ic = ifp->if_l2com; 3619 struct wpi_power_sample *sample; 3620 int pwr, idx; 3621 u_int chan; 3622 3623 /* get channel number */ 3624 chan = ieee80211_chan2ieee(ic, c); 3625 3626 /* default power is group's maximum power - 3dB */ 3627 pwr = group->maxpwr / 2; 3628 3629 /* decrease power for highest OFDM rates to reduce distortion */ 3630 switch (rate) { 3631 case 72: /* 36Mb/s */ 3632 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3633 break; 3634 case 96: /* 48Mb/s */ 3635 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3636 break; 3637 case 108: /* 54Mb/s */ 3638 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3639 break; 3640 } 3641 3642 /* never exceed channel's maximum allowed Tx power */ 3643 pwr = min(pwr, sc->maxpwr[chan]); 3644 3645 /* retrieve power index into gain tables from samples */ 3646 for (sample = group->samples; sample < &group->samples[3]; sample++) 3647 if (pwr > sample[1].power) 3648 break; 3649 /* fixed-point linear interpolation using a 19-bit fractional part */ 3650 idx = interpolate(pwr, sample[0].power, sample[0].index, 3651 sample[1].power, sample[1].index, 19); 3652 3653 /* 3654 * Adjust power index based on current temperature 3655 * - if colder than factory-calibrated: decreate output power 3656 * - if warmer than factory-calibrated: increase output power 3657 */ 3658 idx -= (sc->temp - group->temp) * 11 / 100; 3659 3660 /* decrease power for CCK rates (-5dB) */ 3661 if (!WPI_RATE_IS_OFDM(rate)) 3662 idx += 10; 3663 3664 /* keep power index in a valid range */ 3665 if (idx < 0) 3666 return 0; 3667 if (idx > WPI_MAX_PWR_INDEX) 3668 return WPI_MAX_PWR_INDEX; 3669 return idx; 3670 3671 #undef interpolate 3672 #undef fdivround 3673 } 3674 3675 /** 3676 * Called by net80211 framework to indicate that a scan 3677 * is starting. This function doesn't actually do the scan, 3678 * wpi_scan_curchan starts things off. This function is more 3679 * of an early warning from the framework we should get ready 3680 * for the scan. 3681 */ 3682 static void 3683 wpi_scan_start(struct ieee80211com *ic) 3684 { 3685 struct ifnet *ifp = ic->ic_ifp; 3686 struct wpi_softc *sc = ifp->if_softc; 3687 3688 WPI_LOCK(sc); 3689 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3690 WPI_UNLOCK(sc); 3691 } 3692 3693 /** 3694 * Called by the net80211 framework, indicates that the 3695 * scan has ended. If there is a scan in progress on the card 3696 * then it should be aborted. 3697 */ 3698 static void 3699 wpi_scan_end(struct ieee80211com *ic) 3700 { 3701 /* XXX ignore */ 3702 } 3703 3704 /** 3705 * Called by the net80211 framework to indicate to the driver 3706 * that the channel should be changed 3707 */ 3708 static void 3709 wpi_set_channel(struct ieee80211com *ic) 3710 { 3711 struct ifnet *ifp = ic->ic_ifp; 3712 struct wpi_softc *sc = ifp->if_softc; 3713 int error; 3714 3715 /* 3716 * Only need to set the channel in Monitor mode. AP scanning and auth 3717 * are already taken care of by their respective firmware commands. 3718 */ 3719 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3720 WPI_LOCK(sc); 3721 error = wpi_config(sc); 3722 WPI_UNLOCK(sc); 3723 if (error != 0) 3724 device_printf(sc->sc_dev, 3725 "error %d settting channel\n", error); 3726 } 3727 } 3728 3729 /** 3730 * Called by net80211 to indicate that we need to scan the current 3731 * channel. The channel is previously be set via the wpi_set_channel 3732 * callback. 3733 */ 3734 static void 3735 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3736 { 3737 struct ieee80211vap *vap = ss->ss_vap; 3738 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3739 struct wpi_softc *sc = ifp->if_softc; 3740 3741 WPI_LOCK(sc); 3742 if (wpi_scan(sc)) 3743 ieee80211_cancel_scan(vap); 3744 WPI_UNLOCK(sc); 3745 } 3746 3747 /** 3748 * Called by the net80211 framework to indicate 3749 * the minimum dwell time has been met, terminate the scan. 3750 * We don't actually terminate the scan as the firmware will notify 3751 * us when it's finished and we have no way to interrupt it. 3752 */ 3753 static void 3754 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3755 { 3756 /* NB: don't try to abort scan; wait for firmware to finish */ 3757 } 3758 3759 static void 3760 wpi_hwreset(void *arg, int pending) 3761 { 3762 struct wpi_softc *sc = arg; 3763 3764 WPI_LOCK(sc); 3765 wpi_init_locked(sc, 0); 3766 WPI_UNLOCK(sc); 3767 } 3768 3769 static void 3770 wpi_rfreset(void *arg, int pending) 3771 { 3772 struct wpi_softc *sc = arg; 3773 3774 WPI_LOCK(sc); 3775 wpi_rfkill_resume(sc); 3776 WPI_UNLOCK(sc); 3777 } 3778 3779 /* 3780 * Allocate DMA-safe memory for firmware transfer. 3781 */ 3782 static int 3783 wpi_alloc_fwmem(struct wpi_softc *sc) 3784 { 3785 /* allocate enough contiguous space to store text and data */ 3786 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3787 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3788 BUS_DMA_NOWAIT); 3789 } 3790 3791 static void 3792 wpi_free_fwmem(struct wpi_softc *sc) 3793 { 3794 wpi_dma_contig_free(&sc->fw_dma); 3795 } 3796 3797 /** 3798 * Called every second, wpi_watchdog used by the watch dog timer 3799 * to check that the card is still alive 3800 */ 3801 static void 3802 wpi_watchdog(void *arg) 3803 { 3804 struct wpi_softc *sc = arg; 3805 struct ifnet *ifp = sc->sc_ifp; 3806 struct ieee80211com *ic = ifp->if_l2com; 3807 uint32_t tmp; 3808 3809 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3810 3811 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3812 /* No need to lock firmware memory */ 3813 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3814 3815 if ((tmp & 0x1) == 0) { 3816 /* Radio kill switch is still off */ 3817 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3818 return; 3819 } 3820 3821 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3822 ieee80211_runtask(ic, &sc->sc_radiotask); 3823 return; 3824 } 3825 3826 if (sc->sc_tx_timer > 0) { 3827 if (--sc->sc_tx_timer == 0) { 3828 device_printf(sc->sc_dev,"device timeout\n"); 3829 #if defined(__DragonFly__) 3830 IFNET_STAT_INC(ifp, oerrors, 1); 3831 #else 3832 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 3833 #endif 3834 ieee80211_runtask(ic, &sc->sc_restarttask); 3835 } 3836 } 3837 if (sc->sc_scan_timer > 0) { 3838 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3839 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3840 device_printf(sc->sc_dev,"scan timeout\n"); 3841 ieee80211_cancel_scan(vap); 3842 ieee80211_runtask(ic, &sc->sc_restarttask); 3843 } 3844 } 3845 3846 #if defined(__DragonFly__) 3847 if (ifp->if_flags & IFF_RUNNING) 3848 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3849 #else 3850 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3851 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3852 #endif 3853 } 3854 3855 #if defined(__DragonFly__) 3856 static int 3857 wpi_sleep(struct wpi_softc *sc, void *wchan, 3858 int flags, const char *wmsg, int timo) 3859 { 3860 int iws; 3861 int error; 3862 iws = wlan_is_serialized(); 3863 if (iws) 3864 wlan_serialize_exit(); 3865 error = lksleep(wchan, &sc->sc_mtx, flags, wmsg, timo); 3866 if (iws) 3867 wlan_serialize_enter(); 3868 return error; 3869 } 3870 #endif 3871 3872 3873 #ifdef WPI_DEBUG 3874 static const char *wpi_cmd_str(int cmd) 3875 { 3876 switch (cmd) { 3877 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3878 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3879 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3880 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3881 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3882 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3883 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3884 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3885 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3886 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3887 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3888 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3889 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3890 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3891 3892 default: 3893 KASSERT(1, ("Unknown Command: %d", cmd)); 3894 return "UNKNOWN CMD"; /* Make the compiler happy */ 3895 } 3896 } 3897 #endif 3898 3899 MODULE_DEPEND(wpi, pci, 1, 1, 1); 3900 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3901 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3902