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 ifp->if_nmbjclusters = WPI_RX_RING_COUNT; 684 ifq_set_maxlen(&ifp->if_snd, ifqmaxlen); 685 #else 686 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 687 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 688 IFQ_SET_READY(&ifp->if_snd); 689 #endif 690 691 /* ieee80211_ifattach() assumes that WLAN serializer is held */ 692 wlan_serialize_enter(); 693 ieee80211_ifattach(ic, macaddr); 694 wlan_serialize_exit(); 695 /* override default methods */ 696 ic->ic_raw_xmit = wpi_raw_xmit; 697 ic->ic_wme.wme_update = wpi_wme_update; 698 ic->ic_scan_start = wpi_scan_start; 699 ic->ic_scan_end = wpi_scan_end; 700 ic->ic_set_channel = wpi_set_channel; 701 ic->ic_scan_curchan = wpi_scan_curchan; 702 ic->ic_scan_mindwell = wpi_scan_mindwell; 703 704 ic->ic_vap_create = wpi_vap_create; 705 ic->ic_vap_delete = wpi_vap_delete; 706 707 ieee80211_radiotap_attach(ic, 708 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 709 WPI_TX_RADIOTAP_PRESENT, 710 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 711 WPI_RX_RADIOTAP_PRESENT); 712 713 /* 714 * Hook our interrupt after all initialization is complete. 715 */ 716 #if defined (__DragonFly__) 717 error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE, 718 wpi_intr, sc, &sc->sc_ih, &wlan_global_serializer); 719 #else 720 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE, 721 NULL, wpi_intr, sc, &sc->sc_ih); 722 #endif 723 if (error != 0) { 724 device_printf(dev, "could not set up interrupt\n"); 725 goto fail; 726 } 727 728 if (bootverbose) 729 ieee80211_announce(ic); 730 #ifdef XXX_DEBUG 731 ieee80211_announce_channels(ic); 732 #endif 733 return 0; 734 735 fail: wpi_detach(dev); 736 return ENXIO; 737 } 738 739 static int 740 wpi_detach(device_t dev) 741 { 742 struct wpi_softc *sc = device_get_softc(dev); 743 struct ifnet *ifp = sc->sc_ifp; 744 struct ieee80211com *ic; 745 int ac; 746 747 if (sc->irq != NULL) 748 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 749 750 if (ifp != NULL) { 751 ic = ifp->if_l2com; 752 753 ieee80211_draintask(ic, &sc->sc_restarttask); 754 ieee80211_draintask(ic, &sc->sc_radiotask); 755 wpi_stop(sc); 756 callout_drain(&sc->watchdog_to); 757 callout_drain(&sc->calib_to); 758 ieee80211_ifdetach(ic); 759 } 760 761 WPI_LOCK(sc); 762 if (sc->txq[0].data_dmat) { 763 for (ac = 0; ac < WME_NUM_AC; ac++) 764 wpi_free_tx_ring(sc, &sc->txq[ac]); 765 766 wpi_free_tx_ring(sc, &sc->cmdq); 767 wpi_free_rx_ring(sc, &sc->rxq); 768 wpi_free_shared(sc); 769 } 770 771 if (sc->fw_fp != NULL) { 772 wpi_unload_firmware(sc); 773 } 774 775 if (sc->fw_dma.tag) 776 wpi_free_fwmem(sc); 777 WPI_UNLOCK(sc); 778 779 if (sc->irq != NULL) 780 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 781 sc->irq); 782 if (sc->mem != NULL) 783 bus_release_resource(dev, SYS_RES_MEMORY, 784 rman_get_rid(sc->mem), sc->mem); 785 786 if (ifp != NULL) 787 if_free(ifp); 788 789 WPI_LOCK_DESTROY(sc); 790 791 return 0; 792 } 793 794 static struct ieee80211vap * 795 wpi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 796 enum ieee80211_opmode opmode, int flags, 797 const uint8_t bssid[IEEE80211_ADDR_LEN], 798 const uint8_t mac[IEEE80211_ADDR_LEN]) 799 { 800 struct wpi_vap *wvp; 801 struct ieee80211vap *vap; 802 803 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 804 return NULL; 805 wvp = (struct wpi_vap *) kmalloc(sizeof(struct wpi_vap), 806 M_80211_VAP, M_INTWAIT | M_ZERO); 807 if (wvp == NULL) 808 return NULL; 809 vap = &wvp->vap; 810 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 811 /* override with driver methods */ 812 wvp->newstate = vap->iv_newstate; 813 vap->iv_newstate = wpi_newstate; 814 815 ieee80211_ratectl_init(vap); 816 /* complete setup */ 817 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 818 ic->ic_opmode = opmode; 819 return vap; 820 } 821 822 static void 823 wpi_vap_delete(struct ieee80211vap *vap) 824 { 825 struct wpi_vap *wvp = WPI_VAP(vap); 826 827 ieee80211_ratectl_deinit(vap); 828 ieee80211_vap_detach(vap); 829 kfree(wvp, M_80211_VAP); 830 } 831 832 static void 833 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 834 { 835 if (error != 0) 836 return; 837 838 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 839 840 *(bus_addr_t *)arg = segs[0].ds_addr; 841 } 842 843 /* 844 * Allocates a contiguous block of dma memory of the requested size and 845 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217, 846 * allocations greater than 4096 may fail. Hence if the requested alignment is 847 * greater we allocate 'alignment' size extra memory and shift the vaddr and 848 * paddr after the dma load. This bypasses the problem at the cost of a little 849 * more memory. 850 */ 851 static int 852 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma, 853 void **kvap, bus_size_t size, bus_size_t alignment, int flags) 854 { 855 int error; 856 bus_size_t align; 857 bus_size_t reqsize; 858 859 DPRINTFN(WPI_DEBUG_DMA, 860 ("Size: %zd - alignment %zd\n", size, alignment)); 861 862 dma->size = size; 863 dma->tag = NULL; 864 865 if (alignment > 4096) { 866 align = PAGE_SIZE; 867 reqsize = size + alignment; 868 } else { 869 align = alignment; 870 reqsize = size; 871 } 872 #if defined(__DragonFly__) 873 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 874 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 875 NULL, NULL, reqsize, 876 1, reqsize, flags, 877 &dma->tag); 878 #else 879 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align, 880 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 881 NULL, NULL, reqsize, 882 1, reqsize, flags, 883 NULL, NULL, &dma->tag); 884 #endif 885 if (error != 0) { 886 device_printf(sc->sc_dev, 887 "could not create shared page DMA tag\n"); 888 goto fail; 889 } 890 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start, 891 flags | BUS_DMA_ZERO, &dma->map); 892 if (error != 0) { 893 device_printf(sc->sc_dev, 894 "could not allocate shared page DMA memory\n"); 895 goto fail; 896 } 897 898 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start, 899 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags); 900 901 /* Save the original pointers so we can free all the memory */ 902 dma->paddr = dma->paddr_start; 903 dma->vaddr = dma->vaddr_start; 904 905 /* 906 * Check the alignment and increment by 4096 until we get the 907 * requested alignment. Fail if can't obtain the alignment 908 * we requested. 909 */ 910 if ((dma->paddr & (alignment -1 )) != 0) { 911 int i; 912 913 for (i = 0; i < alignment / 4096; i++) { 914 if ((dma->paddr & (alignment - 1 )) == 0) 915 break; 916 dma->paddr += 4096; 917 dma->vaddr += 4096; 918 } 919 if (i == alignment / 4096) { 920 device_printf(sc->sc_dev, 921 "alignment requirement was not satisfied\n"); 922 goto fail; 923 } 924 } 925 926 if (error != 0) { 927 device_printf(sc->sc_dev, 928 "could not load shared page DMA map\n"); 929 goto fail; 930 } 931 932 if (kvap != NULL) 933 *kvap = dma->vaddr; 934 935 return 0; 936 937 fail: 938 wpi_dma_contig_free(dma); 939 return error; 940 } 941 942 static void 943 wpi_dma_contig_free(struct wpi_dma_info *dma) 944 { 945 if (dma->tag) { 946 if (dma->vaddr_start != NULL) { 947 if (dma->paddr_start != 0) { 948 bus_dmamap_sync(dma->tag, dma->map, 949 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 950 bus_dmamap_unload(dma->tag, dma->map); 951 } 952 bus_dmamem_free(dma->tag, dma->vaddr_start, dma->map); 953 } 954 bus_dma_tag_destroy(dma->tag); 955 } 956 } 957 958 /* 959 * Allocate a shared page between host and NIC. 960 */ 961 static int 962 wpi_alloc_shared(struct wpi_softc *sc) 963 { 964 int error; 965 966 error = wpi_dma_contig_alloc(sc, &sc->shared_dma, 967 (void **)&sc->shared, sizeof (struct wpi_shared), 968 PAGE_SIZE, 969 BUS_DMA_NOWAIT); 970 971 if (error != 0) { 972 device_printf(sc->sc_dev, 973 "could not allocate shared area DMA memory\n"); 974 } 975 976 return error; 977 } 978 979 static void 980 wpi_free_shared(struct wpi_softc *sc) 981 { 982 wpi_dma_contig_free(&sc->shared_dma); 983 } 984 985 static int 986 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 987 { 988 989 int i, error; 990 991 ring->cur = 0; 992 993 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 994 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t), 995 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 996 997 if (error != 0) { 998 device_printf(sc->sc_dev, 999 "%s: could not allocate rx ring DMA memory, error %d\n", 1000 __func__, error); 1001 goto fail; 1002 } 1003 1004 #if defined(__DragonFly__) 1005 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1006 BUS_SPACE_MAXADDR_32BIT, 1007 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 1008 MJUMPAGESIZE, BUS_DMA_NOWAIT, &ring->data_dmat); 1009 #else 1010 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1011 BUS_SPACE_MAXADDR_32BIT, 1012 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1, 1013 MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat); 1014 #endif 1015 if (error != 0) { 1016 device_printf(sc->sc_dev, 1017 "%s: bus_dma_tag_create_failed, error %d\n", 1018 __func__, error); 1019 goto fail; 1020 } 1021 1022 /* 1023 * Setup Rx buffers. 1024 */ 1025 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1026 struct wpi_rx_data *data = &ring->data[i]; 1027 struct mbuf *m; 1028 bus_addr_t paddr; 1029 1030 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1031 if (error != 0) { 1032 device_printf(sc->sc_dev, 1033 "%s: bus_dmamap_create failed, error %d\n", 1034 __func__, error); 1035 goto fail; 1036 } 1037 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1038 if (m == NULL) { 1039 device_printf(sc->sc_dev, 1040 "%s: could not allocate rx mbuf\n", __func__); 1041 error = ENOMEM; 1042 goto fail; 1043 } 1044 /* map page */ 1045 error = bus_dmamap_load(ring->data_dmat, data->map, 1046 mtod(m, caddr_t), MJUMPAGESIZE, 1047 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1048 if (error != 0 && error != EFBIG) { 1049 device_printf(sc->sc_dev, 1050 "%s: bus_dmamap_load failed, error %d\n", 1051 __func__, error); 1052 m_freem(m); 1053 error = ENOMEM; /* XXX unique code */ 1054 goto fail; 1055 } 1056 bus_dmamap_sync(ring->data_dmat, data->map, 1057 BUS_DMASYNC_PREWRITE); 1058 1059 data->m = m; 1060 ring->desc[i] = htole32(paddr); 1061 } 1062 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1063 BUS_DMASYNC_PREWRITE); 1064 return 0; 1065 fail: 1066 wpi_free_rx_ring(sc, ring); 1067 return error; 1068 } 1069 1070 static void 1071 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1072 { 1073 int ntries; 1074 1075 wpi_mem_lock(sc); 1076 1077 WPI_WRITE(sc, WPI_RX_CONFIG, 0); 1078 1079 for (ntries = 0; ntries < 100; ntries++) { 1080 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE) 1081 break; 1082 DELAY(10); 1083 } 1084 1085 wpi_mem_unlock(sc); 1086 1087 #ifdef WPI_DEBUG 1088 if (ntries == 100 && wpi_debug > 0) 1089 device_printf(sc->sc_dev, "timeout resetting Rx ring\n"); 1090 #endif 1091 1092 ring->cur = 0; 1093 } 1094 1095 static void 1096 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring) 1097 { 1098 int i; 1099 1100 wpi_dma_contig_free(&ring->desc_dma); 1101 1102 for (i = 0; i < WPI_RX_RING_COUNT; i++) { 1103 struct wpi_rx_data *data = &ring->data[i]; 1104 1105 if (data->m != NULL) { 1106 bus_dmamap_sync(ring->data_dmat, data->map, 1107 BUS_DMASYNC_POSTREAD); 1108 bus_dmamap_unload(ring->data_dmat, data->map); 1109 m_freem(data->m); 1110 } 1111 if (data->map != NULL) 1112 bus_dmamap_destroy(ring->data_dmat, data->map); 1113 } 1114 } 1115 1116 static int 1117 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count, 1118 int qid) 1119 { 1120 struct wpi_tx_data *data; 1121 int i, error; 1122 1123 ring->qid = qid; 1124 ring->count = count; 1125 ring->queued = 0; 1126 ring->cur = 0; 1127 ring->data = NULL; 1128 1129 error = wpi_dma_contig_alloc(sc, &ring->desc_dma, 1130 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc), 1131 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT); 1132 1133 if (error != 0) { 1134 device_printf(sc->sc_dev, "could not allocate tx dma memory\n"); 1135 goto fail; 1136 } 1137 1138 /* update shared page with ring's base address */ 1139 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr); 1140 1141 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 1142 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN, 1143 BUS_DMA_NOWAIT); 1144 1145 if (error != 0) { 1146 device_printf(sc->sc_dev, 1147 "could not allocate tx command DMA memory\n"); 1148 goto fail; 1149 } 1150 1151 ring->data = kmalloc(count * sizeof (struct wpi_tx_data), M_DEVBUF, 1152 M_INTWAIT | M_ZERO); 1153 if (ring->data == NULL) { 1154 device_printf(sc->sc_dev, 1155 "could not allocate tx data slots\n"); 1156 goto fail; 1157 } 1158 1159 #if defined(__DragonFly__) 1160 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1161 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1162 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, 1163 &ring->data_dmat); 1164 #else 1165 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1166 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1167 WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL, 1168 &ring->data_dmat); 1169 #endif 1170 if (error != 0) { 1171 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 1172 goto fail; 1173 } 1174 1175 for (i = 0; i < count; i++) { 1176 data = &ring->data[i]; 1177 1178 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1179 if (error != 0) { 1180 device_printf(sc->sc_dev, 1181 "could not create tx buf DMA map\n"); 1182 goto fail; 1183 } 1184 bus_dmamap_sync(ring->data_dmat, data->map, 1185 BUS_DMASYNC_PREWRITE); 1186 } 1187 1188 return 0; 1189 1190 fail: 1191 wpi_free_tx_ring(sc, ring); 1192 return error; 1193 } 1194 1195 static void 1196 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1197 { 1198 struct wpi_tx_data *data; 1199 int i, ntries; 1200 1201 wpi_mem_lock(sc); 1202 1203 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0); 1204 for (ntries = 0; ntries < 100; ntries++) { 1205 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid)) 1206 break; 1207 DELAY(10); 1208 } 1209 #ifdef WPI_DEBUG 1210 if (ntries == 100 && wpi_debug > 0) 1211 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n", 1212 ring->qid); 1213 #endif 1214 wpi_mem_unlock(sc); 1215 1216 for (i = 0; i < ring->count; i++) { 1217 data = &ring->data[i]; 1218 1219 if (data->m != NULL) { 1220 bus_dmamap_unload(ring->data_dmat, data->map); 1221 m_freem(data->m); 1222 data->m = NULL; 1223 } 1224 } 1225 1226 ring->queued = 0; 1227 ring->cur = 0; 1228 } 1229 1230 static void 1231 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring) 1232 { 1233 struct wpi_tx_data *data; 1234 int i; 1235 1236 wpi_dma_contig_free(&ring->desc_dma); 1237 wpi_dma_contig_free(&ring->cmd_dma); 1238 1239 if (ring->data != NULL) { 1240 for (i = 0; i < ring->count; i++) { 1241 data = &ring->data[i]; 1242 1243 if (data->m != NULL) { 1244 bus_dmamap_sync(ring->data_dmat, data->map, 1245 BUS_DMASYNC_POSTWRITE); 1246 bus_dmamap_unload(ring->data_dmat, data->map); 1247 m_freem(data->m); 1248 data->m = NULL; 1249 } 1250 } 1251 kfree(ring->data, M_DEVBUF); 1252 } 1253 1254 if (ring->data_dmat != NULL) 1255 bus_dma_tag_destroy(ring->data_dmat); 1256 } 1257 1258 static int 1259 wpi_shutdown(device_t dev) 1260 { 1261 struct wpi_softc *sc = device_get_softc(dev); 1262 1263 WPI_LOCK(sc); 1264 wpi_stop_locked(sc); 1265 wpi_unload_firmware(sc); 1266 WPI_UNLOCK(sc); 1267 1268 return 0; 1269 } 1270 1271 static int 1272 wpi_suspend(device_t dev) 1273 { 1274 struct wpi_softc *sc = device_get_softc(dev); 1275 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1276 1277 ieee80211_suspend_all(ic); 1278 return 0; 1279 } 1280 1281 static int 1282 wpi_resume(device_t dev) 1283 { 1284 struct wpi_softc *sc = device_get_softc(dev); 1285 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 1286 1287 pci_write_config(dev, 0x41, 0, 1); 1288 1289 ieee80211_resume_all(ic); 1290 return 0; 1291 } 1292 1293 /** 1294 * Called by net80211 when ever there is a change to 80211 state machine 1295 */ 1296 static int 1297 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1298 { 1299 struct wpi_vap *wvp = WPI_VAP(vap); 1300 struct ieee80211com *ic = vap->iv_ic; 1301 struct ifnet *ifp = ic->ic_ifp; 1302 struct wpi_softc *sc = ifp->if_softc; 1303 int error; 1304 1305 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 1306 ieee80211_state_name[vap->iv_state], 1307 ieee80211_state_name[nstate], sc->flags)); 1308 1309 IEEE80211_UNLOCK(ic); 1310 WPI_LOCK(sc); 1311 if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) { 1312 /* 1313 * On !INIT -> SCAN transitions, we need to clear any possible 1314 * knowledge about associations. 1315 */ 1316 error = wpi_config(sc); 1317 if (error != 0) { 1318 device_printf(sc->sc_dev, 1319 "%s: device config failed, error %d\n", 1320 __func__, error); 1321 } 1322 } 1323 if (nstate == IEEE80211_S_AUTH || 1324 (nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) { 1325 /* 1326 * The node must be registered in the firmware before auth. 1327 * Also the associd must be cleared on RUN -> ASSOC 1328 * transitions. 1329 */ 1330 error = wpi_auth(sc, vap); 1331 if (error != 0) { 1332 device_printf(sc->sc_dev, 1333 "%s: could not move to auth state, error %d\n", 1334 __func__, error); 1335 } 1336 } 1337 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) { 1338 error = wpi_run(sc, vap); 1339 if (error != 0) { 1340 device_printf(sc->sc_dev, 1341 "%s: could not move to run state, error %d\n", 1342 __func__, error); 1343 } 1344 } 1345 if (nstate == IEEE80211_S_RUN) { 1346 /* RUN -> RUN transition; just restart the timers */ 1347 wpi_calib_timeout(sc); 1348 /* XXX split out rate control timer */ 1349 } 1350 WPI_UNLOCK(sc); 1351 IEEE80211_LOCK(ic); 1352 return wvp->newstate(vap, nstate, arg); 1353 } 1354 1355 /* 1356 * Grab exclusive access to NIC memory. 1357 */ 1358 static void 1359 wpi_mem_lock(struct wpi_softc *sc) 1360 { 1361 int ntries; 1362 uint32_t tmp; 1363 1364 tmp = WPI_READ(sc, WPI_GPIO_CTL); 1365 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC); 1366 1367 /* spin until we actually get the lock */ 1368 for (ntries = 0; ntries < 100; ntries++) { 1369 if ((WPI_READ(sc, WPI_GPIO_CTL) & 1370 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK) 1371 break; 1372 DELAY(10); 1373 } 1374 if (ntries == 100) 1375 device_printf(sc->sc_dev, "could not lock memory\n"); 1376 } 1377 1378 /* 1379 * Release lock on NIC memory. 1380 */ 1381 static void 1382 wpi_mem_unlock(struct wpi_softc *sc) 1383 { 1384 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL); 1385 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC); 1386 } 1387 1388 static uint32_t 1389 wpi_mem_read(struct wpi_softc *sc, uint16_t addr) 1390 { 1391 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr); 1392 return WPI_READ(sc, WPI_READ_MEM_DATA); 1393 } 1394 1395 static void 1396 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data) 1397 { 1398 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr); 1399 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data); 1400 } 1401 1402 static void 1403 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr, 1404 const uint32_t *data, int wlen) 1405 { 1406 for (; wlen > 0; wlen--, data++, addr+=4) 1407 wpi_mem_write(sc, addr, *data); 1408 } 1409 1410 /* 1411 * Read data from the EEPROM. We access EEPROM through the MAC instead of 1412 * using the traditional bit-bang method. Data is read up until len bytes have 1413 * been obtained. 1414 */ 1415 static uint16_t 1416 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len) 1417 { 1418 int ntries; 1419 uint32_t val; 1420 uint8_t *out = data; 1421 1422 wpi_mem_lock(sc); 1423 1424 for (; len > 0; len -= 2, addr++) { 1425 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2); 1426 1427 for (ntries = 0; ntries < 10; ntries++) { 1428 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY) 1429 break; 1430 DELAY(5); 1431 } 1432 1433 if (ntries == 10) { 1434 device_printf(sc->sc_dev, "could not read EEPROM\n"); 1435 return ETIMEDOUT; 1436 } 1437 1438 *out++= val >> 16; 1439 if (len > 1) 1440 *out ++= val >> 24; 1441 } 1442 1443 wpi_mem_unlock(sc); 1444 1445 return 0; 1446 } 1447 1448 /* 1449 * The firmware text and data segments are transferred to the NIC using DMA. 1450 * The driver just copies the firmware into DMA-safe memory and tells the NIC 1451 * where to find it. Once the NIC has copied the firmware into its internal 1452 * memory, we can free our local copy in the driver. 1453 */ 1454 static int 1455 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size) 1456 { 1457 int error, ntries; 1458 1459 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size)); 1460 1461 size /= sizeof(uint32_t); 1462 1463 wpi_mem_lock(sc); 1464 1465 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE, 1466 (const uint32_t *)fw, size); 1467 1468 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0); 1469 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT); 1470 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size); 1471 1472 /* run microcode */ 1473 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN); 1474 1475 /* wait while the adapter is busy copying the firmware */ 1476 for (error = 0, ntries = 0; ntries < 1000; ntries++) { 1477 uint32_t status = WPI_READ(sc, WPI_TX_STATUS); 1478 DPRINTFN(WPI_DEBUG_HW, 1479 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status, 1480 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6))); 1481 if (status & WPI_TX_IDLE(6)) { 1482 DPRINTFN(WPI_DEBUG_HW, 1483 ("Status Match! - ntries = %d\n", ntries)); 1484 break; 1485 } 1486 DELAY(10); 1487 } 1488 if (ntries == 1000) { 1489 device_printf(sc->sc_dev, "timeout transferring firmware\n"); 1490 error = ETIMEDOUT; 1491 } 1492 1493 /* start the microcode executing */ 1494 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE); 1495 1496 wpi_mem_unlock(sc); 1497 1498 return (error); 1499 } 1500 1501 static void 1502 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc, 1503 struct wpi_rx_data *data) 1504 { 1505 struct ifnet *ifp = sc->sc_ifp; 1506 struct ieee80211com *ic = ifp->if_l2com; 1507 struct wpi_rx_ring *ring = &sc->rxq; 1508 struct wpi_rx_stat *stat; 1509 struct wpi_rx_head *head; 1510 struct wpi_rx_tail *tail; 1511 struct ieee80211_node *ni; 1512 struct mbuf *m, *mnew; 1513 bus_addr_t paddr; 1514 int error; 1515 1516 stat = (struct wpi_rx_stat *)(desc + 1); 1517 1518 if (stat->len > WPI_STAT_MAXLEN) { 1519 device_printf(sc->sc_dev, "invalid rx statistic header\n"); 1520 #if defined(__DragonFly__) 1521 IFNET_STAT_INC(ifp, ierrors, 1); 1522 #else 1523 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1524 #endif 1525 return; 1526 } 1527 1528 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 1529 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len); 1530 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len)); 1531 1532 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d " 1533 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len), 1534 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan, 1535 (uintmax_t)le64toh(tail->tstamp))); 1536 1537 /* discard Rx frames with bad CRC early */ 1538 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) { 1539 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__, 1540 le32toh(tail->flags))); 1541 #if defined(__DragonFly__) 1542 IFNET_STAT_INC(ifp, ierrors, 1); 1543 #else 1544 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1545 #endif 1546 return; 1547 } 1548 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) { 1549 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__, 1550 le16toh(head->len))); 1551 #if defined(__DragonFly__) 1552 IFNET_STAT_INC(ifp, ierrors, 1); 1553 #else 1554 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1555 #endif 1556 return; 1557 } 1558 1559 /* XXX don't need mbuf, just dma buffer */ 1560 mnew = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 1561 if (mnew == NULL) { 1562 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n", 1563 __func__)); 1564 #if defined(__DragonFly__) 1565 IFNET_STAT_INC(ifp, ierrors, 1); 1566 #else 1567 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1568 #endif 1569 return; 1570 } 1571 bus_dmamap_unload(ring->data_dmat, data->map); 1572 1573 error = bus_dmamap_load(ring->data_dmat, data->map, 1574 mtod(mnew, caddr_t), MJUMPAGESIZE, 1575 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 1576 if (error != 0 && error != EFBIG) { 1577 device_printf(sc->sc_dev, 1578 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 1579 m_freem(mnew); 1580 #if defined(__DragonFly__) 1581 IFNET_STAT_INC(ifp, ierrors, 1); 1582 #else 1583 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1584 #endif 1585 return; 1586 } 1587 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1588 1589 /* finalize mbuf and swap in new one */ 1590 m = data->m; 1591 m->m_pkthdr.rcvif = ifp; 1592 m->m_data = (caddr_t)(head + 1); 1593 m->m_pkthdr.len = m->m_len = le16toh(head->len); 1594 1595 data->m = mnew; 1596 /* update Rx descriptor */ 1597 ring->desc[ring->cur] = htole32(paddr); 1598 1599 if (ieee80211_radiotap_active(ic)) { 1600 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap; 1601 1602 tap->wr_flags = 0; 1603 tap->wr_chan_freq = 1604 htole16(ic->ic_channels[head->chan].ic_freq); 1605 tap->wr_chan_flags = 1606 htole16(ic->ic_channels[head->chan].ic_flags); 1607 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET); 1608 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise); 1609 tap->wr_tsft = tail->tstamp; 1610 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf; 1611 switch (head->rate) { 1612 /* CCK rates */ 1613 case 10: tap->wr_rate = 2; break; 1614 case 20: tap->wr_rate = 4; break; 1615 case 55: tap->wr_rate = 11; break; 1616 case 110: tap->wr_rate = 22; break; 1617 /* OFDM rates */ 1618 case 0xd: tap->wr_rate = 12; break; 1619 case 0xf: tap->wr_rate = 18; break; 1620 case 0x5: tap->wr_rate = 24; break; 1621 case 0x7: tap->wr_rate = 36; break; 1622 case 0x9: tap->wr_rate = 48; break; 1623 case 0xb: tap->wr_rate = 72; break; 1624 case 0x1: tap->wr_rate = 96; break; 1625 case 0x3: tap->wr_rate = 108; break; 1626 /* unknown rate: should not happen */ 1627 default: tap->wr_rate = 0; 1628 } 1629 if (le16toh(head->flags) & 0x4) 1630 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1631 } 1632 1633 WPI_UNLOCK(sc); 1634 1635 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1636 if (ni != NULL) { 1637 (void) ieee80211_input(ni, m, stat->rssi, 0); 1638 ieee80211_free_node(ni); 1639 } else 1640 (void) ieee80211_input_all(ic, m, stat->rssi, 0); 1641 1642 WPI_LOCK(sc); 1643 } 1644 1645 static void 1646 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1647 { 1648 struct ifnet *ifp = sc->sc_ifp; 1649 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3]; 1650 struct wpi_tx_data *txdata = &ring->data[desc->idx]; 1651 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1); 1652 struct ieee80211_node *ni = txdata->ni; 1653 struct ieee80211vap *vap = ni->ni_vap; 1654 int retrycnt = 0; 1655 1656 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d " 1657 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx, 1658 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration), 1659 le32toh(stat->status))); 1660 1661 /* 1662 * Update rate control statistics for the node. 1663 * XXX we should not count mgmt frames since they're always sent at 1664 * the lowest available bit-rate. 1665 * XXX frames w/o ACK shouldn't be used either 1666 */ 1667 if (stat->ntries > 0) { 1668 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries)); 1669 retrycnt = 1; 1670 } 1671 ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS, 1672 &retrycnt, NULL); 1673 1674 /* XXX oerrors should only count errors !maxtries */ 1675 #if defined(__DragonFly__) 1676 if ((le32toh(stat->status) & 0xff) != 1) 1677 IFNET_STAT_INC(ifp, oerrors, 1); 1678 else 1679 IFNET_STAT_INC(ifp, opackets, 1); 1680 #else 1681 if ((le32toh(stat->status) & 0xff) != 1) 1682 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1683 else 1684 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1685 #endif 1686 1687 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE); 1688 bus_dmamap_unload(ring->data_dmat, txdata->map); 1689 /* XXX handle M_TXCB? */ 1690 m_freem(txdata->m); 1691 txdata->m = NULL; 1692 ieee80211_free_node(txdata->ni); 1693 txdata->ni = NULL; 1694 1695 ring->queued--; 1696 1697 sc->sc_tx_timer = 0; 1698 #if defined(__DragonFly__) 1699 ifq_clr_oactive(&ifp->if_snd); 1700 #else 1701 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1702 #endif 1703 wpi_start_locked(ifp); 1704 } 1705 1706 static void 1707 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc) 1708 { 1709 struct wpi_tx_ring *ring = &sc->cmdq; 1710 struct wpi_tx_data *data; 1711 1712 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x " 1713 "type=%s len=%d\n", desc->qid, desc->idx, 1714 desc->flags, wpi_cmd_str(desc->type), 1715 le32toh(desc->len))); 1716 1717 if ((desc->qid & 7) != 4) 1718 return; /* not a command ack */ 1719 1720 data = &ring->data[desc->idx]; 1721 1722 /* if the command was mapped in a mbuf, free it */ 1723 if (data->m != NULL) { 1724 bus_dmamap_unload(ring->data_dmat, data->map); 1725 m_freem(data->m); 1726 data->m = NULL; 1727 } 1728 1729 sc->flags &= ~WPI_FLAG_BUSY; 1730 wakeup(&ring->cmd[desc->idx]); 1731 } 1732 1733 static void 1734 wpi_notif_intr(struct wpi_softc *sc) 1735 { 1736 struct ifnet *ifp = sc->sc_ifp; 1737 struct ieee80211com *ic = ifp->if_l2com; 1738 struct wpi_rx_desc *desc; 1739 struct wpi_rx_data *data; 1740 uint32_t hw; 1741 1742 bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map, 1743 BUS_DMASYNC_POSTREAD); 1744 1745 hw = le32toh(sc->shared->next); 1746 while (sc->rxq.cur != hw) { 1747 data = &sc->rxq.data[sc->rxq.cur]; 1748 1749 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1750 BUS_DMASYNC_POSTREAD); 1751 desc = (void *)data->m->m_ext.ext_buf; 1752 1753 DPRINTFN(WPI_DEBUG_NOTIFY, 1754 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n", 1755 desc->qid, 1756 desc->idx, 1757 desc->flags, 1758 desc->type, 1759 le32toh(desc->len))); 1760 1761 if (!(desc->qid & 0x80)) /* reply to a command */ 1762 wpi_cmd_intr(sc, desc); 1763 1764 switch (desc->type) { 1765 case WPI_RX_DONE: 1766 /* a 802.11 frame was received */ 1767 wpi_rx_intr(sc, desc, data); 1768 break; 1769 1770 case WPI_TX_DONE: 1771 /* a 802.11 frame has been transmitted */ 1772 wpi_tx_intr(sc, desc); 1773 break; 1774 1775 case WPI_UC_READY: 1776 { 1777 struct wpi_ucode_info *uc = 1778 (struct wpi_ucode_info *)(desc + 1); 1779 1780 /* the microcontroller is ready */ 1781 DPRINTF(("microcode alive notification version %x " 1782 "alive %x\n", le32toh(uc->version), 1783 le32toh(uc->valid))); 1784 1785 if (le32toh(uc->valid) != 1) { 1786 device_printf(sc->sc_dev, 1787 "microcontroller initialization failed\n"); 1788 wpi_stop_locked(sc); 1789 } 1790 break; 1791 } 1792 case WPI_STATE_CHANGED: 1793 { 1794 uint32_t *status = (uint32_t *)(desc + 1); 1795 1796 /* enabled/disabled notification */ 1797 DPRINTF(("state changed to %x\n", le32toh(*status))); 1798 1799 if (le32toh(*status) & 1) { 1800 device_printf(sc->sc_dev, 1801 "Radio transmitter is switched off\n"); 1802 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 1803 #if defined(__DragonFly__) 1804 ifp->if_flags &= ~IFF_RUNNING; 1805 #else 1806 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1807 #endif 1808 /* Disable firmware commands */ 1809 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD); 1810 } 1811 break; 1812 } 1813 case WPI_START_SCAN: 1814 { 1815 #ifdef WPI_DEBUG 1816 struct wpi_start_scan *scan = 1817 (struct wpi_start_scan *)(desc + 1); 1818 #endif 1819 1820 DPRINTFN(WPI_DEBUG_SCANNING, 1821 ("scanning channel %d status %x\n", 1822 scan->chan, le32toh(scan->status))); 1823 break; 1824 } 1825 case WPI_STOP_SCAN: 1826 { 1827 #ifdef WPI_DEBUG 1828 struct wpi_stop_scan *scan = 1829 (struct wpi_stop_scan *)(desc + 1); 1830 #endif 1831 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1832 1833 DPRINTFN(WPI_DEBUG_SCANNING, 1834 ("scan finished nchan=%d status=%d chan=%d\n", 1835 scan->nchan, scan->status, scan->chan)); 1836 1837 sc->sc_scan_timer = 0; 1838 ieee80211_scan_next(vap); 1839 break; 1840 } 1841 case WPI_MISSED_BEACON: 1842 { 1843 struct wpi_missed_beacon *beacon = 1844 (struct wpi_missed_beacon *)(desc + 1); 1845 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1846 1847 if (le32toh(beacon->consecutive) >= 1848 vap->iv_bmissthreshold) { 1849 DPRINTF(("Beacon miss: %u >= %u\n", 1850 le32toh(beacon->consecutive), 1851 vap->iv_bmissthreshold)); 1852 ieee80211_beacon_miss(ic); 1853 } 1854 break; 1855 } 1856 } 1857 1858 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT; 1859 } 1860 1861 /* tell the firmware what we have processed */ 1862 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1; 1863 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7); 1864 } 1865 1866 static void 1867 wpi_intr(void *arg) 1868 { 1869 struct wpi_softc *sc = arg; 1870 uint32_t r; 1871 1872 WPI_LOCK(sc); 1873 1874 r = WPI_READ(sc, WPI_INTR); 1875 if (r == 0 || r == 0xffffffff) { 1876 WPI_UNLOCK(sc); 1877 return; 1878 } 1879 1880 /* disable interrupts */ 1881 WPI_WRITE(sc, WPI_MASK, 0); 1882 /* ack interrupts */ 1883 WPI_WRITE(sc, WPI_INTR, r); 1884 1885 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) { 1886 struct ifnet *ifp = sc->sc_ifp; 1887 struct ieee80211com *ic = ifp->if_l2com; 1888 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1889 1890 device_printf(sc->sc_dev, "fatal firmware error\n"); 1891 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" : 1892 "(Hardware Error)")); 1893 if (vap != NULL) 1894 ieee80211_cancel_scan(vap); 1895 ieee80211_runtask(ic, &sc->sc_restarttask); 1896 sc->flags &= ~WPI_FLAG_BUSY; 1897 WPI_UNLOCK(sc); 1898 return; 1899 } 1900 1901 if (r & WPI_RX_INTR) 1902 wpi_notif_intr(sc); 1903 1904 if (r & WPI_ALIVE_INTR) /* firmware initialized */ 1905 wakeup(sc); 1906 1907 /* re-enable interrupts */ 1908 if (sc->sc_ifp->if_flags & IFF_UP) 1909 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 1910 1911 WPI_UNLOCK(sc); 1912 } 1913 1914 static uint8_t 1915 wpi_plcp_signal(int rate) 1916 { 1917 switch (rate) { 1918 /* CCK rates (returned values are device-dependent) */ 1919 case 2: return 10; 1920 case 4: return 20; 1921 case 11: return 55; 1922 case 22: return 110; 1923 1924 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1925 /* R1-R4 (ral/ural is R4-R1) */ 1926 case 12: return 0xd; 1927 case 18: return 0xf; 1928 case 24: return 0x5; 1929 case 36: return 0x7; 1930 case 48: return 0x9; 1931 case 72: return 0xb; 1932 case 96: return 0x1; 1933 case 108: return 0x3; 1934 1935 /* unsupported rates (should not get there) */ 1936 default: return 0; 1937 } 1938 } 1939 1940 /* quickly determine if a given rate is CCK or OFDM */ 1941 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1942 1943 /* 1944 * Construct the data packet for a transmit buffer and acutally put 1945 * the buffer onto the transmit ring, kicking the card to process the 1946 * the buffer. 1947 */ 1948 static int 1949 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1950 int ac) 1951 { 1952 struct ieee80211vap *vap = ni->ni_vap; 1953 struct ifnet *ifp = sc->sc_ifp; 1954 struct ieee80211com *ic = ifp->if_l2com; 1955 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams; 1956 struct wpi_tx_ring *ring = &sc->txq[ac]; 1957 struct wpi_tx_desc *desc; 1958 struct wpi_tx_data *data; 1959 struct wpi_tx_cmd *cmd; 1960 struct wpi_cmd_data *tx; 1961 struct ieee80211_frame *wh; 1962 const struct ieee80211_txparam *tp; 1963 struct ieee80211_key *k; 1964 struct mbuf *mnew; 1965 int i, error, nsegs, rate, hdrlen, ismcast; 1966 bus_dma_segment_t segs[WPI_MAX_SCATTER]; 1967 1968 desc = &ring->desc[ring->cur]; 1969 data = &ring->data[ring->cur]; 1970 1971 wh = mtod(m0, struct ieee80211_frame *); 1972 1973 hdrlen = ieee80211_hdrsize(wh); 1974 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1975 1976 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1977 k = ieee80211_crypto_encap(ni, m0); 1978 if (k == NULL) { 1979 m_freem(m0); 1980 return ENOBUFS; 1981 } 1982 /* packet header may have moved, reset our local pointer */ 1983 wh = mtod(m0, struct ieee80211_frame *); 1984 } 1985 1986 cmd = &ring->cmd[ring->cur]; 1987 cmd->code = WPI_CMD_TX_DATA; 1988 cmd->flags = 0; 1989 cmd->qid = ring->qid; 1990 cmd->idx = ring->cur; 1991 1992 tx = (struct wpi_cmd_data *)cmd->data; 1993 tx->flags = htole32(WPI_TX_AUTO_SEQ); 1994 tx->timeout = htole16(0); 1995 tx->ofdm_mask = 0xff; 1996 tx->cck_mask = 0x0f; 1997 tx->lifetime = htole32(WPI_LIFETIME_INFINITE); 1998 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS; 1999 tx->len = htole16(m0->m_pkthdr.len); 2000 2001 if (!ismcast) { 2002 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 || 2003 !cap->cap_wmeParams[ac].wmep_noackPolicy) 2004 tx->flags |= htole32(WPI_TX_NEED_ACK); 2005 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 2006 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP); 2007 tx->rts_ntries = 7; 2008 } 2009 } 2010 /* pick a rate */ 2011 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 2012 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) { 2013 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 2014 /* tell h/w to set timestamp in probe responses */ 2015 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 2016 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP); 2017 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 2018 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 2019 tx->timeout = htole16(3); 2020 else 2021 tx->timeout = htole16(2); 2022 rate = tp->mgmtrate; 2023 } else if (ismcast) { 2024 rate = tp->mcastrate; 2025 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 2026 rate = tp->ucastrate; 2027 } else { 2028 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2029 rate = ni->ni_txrate; 2030 } 2031 tx->rate = wpi_plcp_signal(rate); 2032 2033 /* be very persistant at sending frames out */ 2034 #if 0 2035 tx->data_ntries = tp->maxretry; 2036 #else 2037 tx->data_ntries = 15; /* XXX way too high */ 2038 #endif 2039 2040 if (ieee80211_radiotap_active_vap(vap)) { 2041 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap; 2042 tap->wt_flags = 0; 2043 tap->wt_rate = rate; 2044 tap->wt_hwqueue = ac; 2045 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) 2046 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 2047 2048 ieee80211_radiotap_tx(vap, m0); 2049 } 2050 2051 /* save and trim IEEE802.11 header */ 2052 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh); 2053 m_adj(m0, hdrlen); 2054 2055 #if defined(__DragonFly__) 2056 error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map, 2057 m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 2058 #else 2059 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs, 2060 &nsegs, BUS_DMA_NOWAIT); 2061 #endif 2062 if (error != 0 && error != EFBIG) { 2063 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 2064 error); 2065 m_freem(m0); 2066 return error; 2067 } 2068 if (error != 0) { 2069 /* XXX use m_collapse */ 2070 mnew = m_defrag(m0, M_NOWAIT); 2071 if (mnew == NULL) { 2072 device_printf(sc->sc_dev, 2073 "could not defragment mbuf\n"); 2074 m_freem(m0); 2075 return ENOBUFS; 2076 } 2077 m0 = mnew; 2078 2079 #if defined(__DragonFly__) 2080 error = bus_dmamap_load_mbuf_segment(ring->data_dmat, 2081 data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 2082 #else 2083 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, 2084 m0, segs, &nsegs, BUS_DMA_NOWAIT); 2085 #endif 2086 if (error != 0) { 2087 device_printf(sc->sc_dev, 2088 "could not map mbuf (error %d)\n", error); 2089 m_freem(m0); 2090 return error; 2091 } 2092 } 2093 2094 data->m = m0; 2095 data->ni = ni; 2096 2097 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n", 2098 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs)); 2099 2100 /* first scatter/gather segment is used by the tx data command */ 2101 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2102 (1 + nsegs) << 24); 2103 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2104 ring->cur * sizeof (struct wpi_tx_cmd)); 2105 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data)); 2106 for (i = 1; i <= nsegs; i++) { 2107 desc->segs[i].addr = htole32(segs[i - 1].ds_addr); 2108 desc->segs[i].len = htole32(segs[i - 1].ds_len); 2109 } 2110 2111 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2112 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2113 BUS_DMASYNC_PREWRITE); 2114 2115 ring->queued++; 2116 2117 /* kick ring */ 2118 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT; 2119 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2120 2121 return 0; 2122 } 2123 2124 /** 2125 * Process data waiting to be sent on the IFNET output queue 2126 */ 2127 static void 2128 wpi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 2129 { 2130 struct wpi_softc *sc = ifp->if_softc; 2131 2132 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 2133 2134 WPI_LOCK(sc); 2135 wpi_start_locked(ifp); 2136 WPI_UNLOCK(sc); 2137 } 2138 2139 static void 2140 wpi_start_locked(struct ifnet *ifp) 2141 { 2142 struct wpi_softc *sc = ifp->if_softc; 2143 struct ieee80211_node *ni; 2144 struct mbuf *m; 2145 int ac; 2146 2147 WPI_LOCK_ASSERT(sc); 2148 2149 #if defined(__DragonFly__) 2150 if ((ifp->if_flags & IFF_RUNNING) == 0) 2151 return; 2152 #else 2153 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2154 return; 2155 #endif 2156 2157 for (;;) { 2158 #if defined(__DragonFly__) 2159 m = ifq_dequeue(&ifp->if_snd); 2160 #else 2161 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 2162 #endif 2163 if (m == NULL) 2164 break; 2165 ac = M_WME_GETAC(m); 2166 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 2167 /* there is no place left in this ring */ 2168 #if defined(__DragonFly__) 2169 ifq_prepend(&ifp->if_snd, m); 2170 ifq_set_oactive(&ifp->if_snd); 2171 #else 2172 IFQ_DRV_PREPEND(&ifp->if_snd, m); 2173 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2174 #endif 2175 break; 2176 } 2177 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 2178 if (wpi_tx_data(sc, m, ni, ac) != 0) { 2179 ieee80211_free_node(ni); 2180 #if defined(__DragonFly__) 2181 IFNET_STAT_INC(ifp, oerrors, 1); 2182 #else 2183 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2184 #endif 2185 break; 2186 } 2187 sc->sc_tx_timer = 5; 2188 } 2189 } 2190 2191 static int 2192 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2193 const struct ieee80211_bpf_params *params) 2194 { 2195 struct ieee80211com *ic = ni->ni_ic; 2196 struct ifnet *ifp = ic->ic_ifp; 2197 struct wpi_softc *sc = ifp->if_softc; 2198 2199 /* prevent management frames from being sent if we're not ready */ 2200 #if defined(__DragonFly__) 2201 if (!(ifp->if_flags & IFF_RUNNING)) { 2202 m_freem(m); 2203 ieee80211_free_node(ni); 2204 return ENETDOWN; 2205 } 2206 #else 2207 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2208 m_freem(m); 2209 ieee80211_free_node(ni); 2210 return ENETDOWN; 2211 } 2212 #endif 2213 WPI_LOCK(sc); 2214 2215 /* management frames go into ring 0 */ 2216 if (sc->txq[0].queued > sc->txq[0].count - 8) { 2217 #if defined(__DragonFly__) 2218 ifq_set_oactive(&ifp->if_snd); 2219 #else 2220 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2221 #endif 2222 m_freem(m); 2223 WPI_UNLOCK(sc); 2224 ieee80211_free_node(ni); 2225 return ENOBUFS; /* XXX */ 2226 } 2227 2228 #if defined(__DragonFly__) 2229 IFNET_STAT_INC(ifp, opackets, 1); 2230 #else 2231 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 2232 #endif 2233 if (wpi_tx_data(sc, m, ni, 0) != 0) 2234 goto bad; 2235 sc->sc_tx_timer = 5; 2236 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 2237 2238 WPI_UNLOCK(sc); 2239 return 0; 2240 bad: 2241 #if defined(__DragonFly__) 2242 IFNET_STAT_INC(ifp, oerrors, 1); 2243 #else 2244 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2245 #endif 2246 WPI_UNLOCK(sc); 2247 ieee80211_free_node(ni); 2248 return EIO; /* XXX */ 2249 } 2250 2251 static int 2252 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, 2253 struct ucred *cred __unused) 2254 { 2255 struct wpi_softc *sc = ifp->if_softc; 2256 struct ieee80211com *ic = ifp->if_l2com; 2257 struct ifreq *ifr = (struct ifreq *) data; 2258 int error = 0, startall = 0; 2259 2260 switch (cmd) { 2261 case SIOCSIFFLAGS: 2262 WPI_LOCK(sc); 2263 #if defined(__DragonFly__) 2264 if ((ifp->if_flags & IFF_UP)) { 2265 if (!(ifp->if_flags & IFF_RUNNING)) { 2266 wpi_init_locked(sc, 0); 2267 startall = 1; 2268 } 2269 } else if ((ifp->if_flags & IFF_RUNNING) || 2270 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2271 wpi_stop_locked(sc); 2272 #else 2273 if ((ifp->if_flags & IFF_UP)) { 2274 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2275 wpi_init_locked(sc, 0); 2276 startall = 1; 2277 } 2278 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) || 2279 (sc->flags & WPI_FLAG_HW_RADIO_OFF)) 2280 wpi_stop_locked(sc); 2281 #endif 2282 WPI_UNLOCK(sc); 2283 if (startall) 2284 ieee80211_start_all(ic); 2285 break; 2286 case SIOCGIFMEDIA: 2287 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2288 break; 2289 case SIOCGIFADDR: 2290 error = ether_ioctl(ifp, cmd, data); 2291 break; 2292 default: 2293 error = EINVAL; 2294 break; 2295 } 2296 return error; 2297 } 2298 2299 /* 2300 * Extract various information from EEPROM. 2301 */ 2302 static void 2303 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2304 { 2305 int i; 2306 2307 /* read the hardware capabilities, revision and SKU type */ 2308 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1); 2309 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2); 2310 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1); 2311 2312 /* read the regulatory domain */ 2313 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4); 2314 2315 /* read in the hw MAC address */ 2316 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6); 2317 2318 /* read the list of authorized channels */ 2319 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++) 2320 wpi_read_eeprom_channels(sc,i); 2321 2322 /* read the power level calibration info for each group */ 2323 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++) 2324 wpi_read_eeprom_group(sc,i); 2325 } 2326 2327 /* 2328 * Send a command to the firmware. 2329 */ 2330 static int 2331 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async) 2332 { 2333 struct wpi_tx_ring *ring = &sc->cmdq; 2334 struct wpi_tx_desc *desc; 2335 struct wpi_tx_cmd *cmd; 2336 2337 #ifdef WPI_DEBUG 2338 if (!async) { 2339 WPI_LOCK_ASSERT(sc); 2340 } 2341 #endif 2342 2343 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size, 2344 async)); 2345 2346 if (sc->flags & WPI_FLAG_BUSY) { 2347 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 2348 __func__, code); 2349 return EAGAIN; 2350 } 2351 sc->flags|= WPI_FLAG_BUSY; 2352 2353 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes", 2354 code, size)); 2355 2356 desc = &ring->desc[ring->cur]; 2357 cmd = &ring->cmd[ring->cur]; 2358 2359 cmd->code = code; 2360 cmd->flags = 0; 2361 cmd->qid = ring->qid; 2362 cmd->idx = ring->cur; 2363 memcpy(cmd->data, buf, size); 2364 2365 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24); 2366 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2367 ring->cur * sizeof (struct wpi_tx_cmd)); 2368 desc->segs[0].len = htole32(4 + size); 2369 2370 /* kick cmd ring */ 2371 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2372 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2373 2374 if (async) { 2375 sc->flags &= ~ WPI_FLAG_BUSY; 2376 return 0; 2377 } 2378 2379 #if defined(__DragonFly__) 2380 return wpi_sleep(sc, cmd, PCATCH, "wpicmd", hz); 2381 #else 2382 return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz); 2383 #endif 2384 } 2385 2386 static int 2387 wpi_wme_update(struct ieee80211com *ic) 2388 { 2389 #define WPI_EXP2(v) htole16((1 << (v)) - 1) 2390 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 2391 struct wpi_softc *sc = ic->ic_ifp->if_softc; 2392 const struct wmeParams *wmep; 2393 struct wpi_wme_setup wme; 2394 int ac; 2395 2396 /* don't override default WME values if WME is not actually enabled */ 2397 if (!(ic->ic_flags & IEEE80211_F_WME)) 2398 return 0; 2399 2400 wme.flags = 0; 2401 for (ac = 0; ac < WME_NUM_AC; ac++) { 2402 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 2403 wme.ac[ac].aifsn = wmep->wmep_aifsn; 2404 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin); 2405 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax); 2406 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit); 2407 2408 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d " 2409 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin, 2410 wme.ac[ac].cwmax, wme.ac[ac].txop)); 2411 } 2412 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1); 2413 #undef WPI_USEC 2414 #undef WPI_EXP2 2415 } 2416 2417 /* 2418 * Configure h/w multi-rate retries. 2419 */ 2420 static int 2421 wpi_mrr_setup(struct wpi_softc *sc) 2422 { 2423 struct ifnet *ifp = sc->sc_ifp; 2424 struct ieee80211com *ic = ifp->if_l2com; 2425 struct wpi_mrr_setup mrr; 2426 int i, error; 2427 2428 memset(&mrr, 0, sizeof (struct wpi_mrr_setup)); 2429 2430 /* CCK rates (not used with 802.11a) */ 2431 for (i = WPI_CCK1; i <= WPI_CCK11; i++) { 2432 mrr.rates[i].flags = 0; 2433 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2434 /* fallback to the immediate lower CCK rate (if any) */ 2435 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1; 2436 /* try one time at this rate before falling back to "next" */ 2437 mrr.rates[i].ntries = 1; 2438 } 2439 2440 /* OFDM rates (not used with 802.11b) */ 2441 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) { 2442 mrr.rates[i].flags = 0; 2443 mrr.rates[i].signal = wpi_ridx_to_plcp[i]; 2444 /* fallback to the immediate lower OFDM rate (if any) */ 2445 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */ 2446 mrr.rates[i].next = (i == WPI_OFDM6) ? 2447 ((ic->ic_curmode == IEEE80211_MODE_11A) ? 2448 WPI_OFDM6 : WPI_CCK2) : 2449 i - 1; 2450 /* try one time at this rate before falling back to "next" */ 2451 mrr.rates[i].ntries = 1; 2452 } 2453 2454 /* setup MRR for control frames */ 2455 mrr.which = WPI_MRR_CTL; 2456 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2457 if (error != 0) { 2458 device_printf(sc->sc_dev, 2459 "could not setup MRR for control frames\n"); 2460 return error; 2461 } 2462 2463 /* setup MRR for data frames */ 2464 mrr.which = WPI_MRR_DATA; 2465 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0); 2466 if (error != 0) { 2467 device_printf(sc->sc_dev, 2468 "could not setup MRR for data frames\n"); 2469 return error; 2470 } 2471 2472 return 0; 2473 } 2474 2475 static void 2476 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on) 2477 { 2478 struct wpi_cmd_led led; 2479 2480 led.which = which; 2481 led.unit = htole32(100000); /* on/off in unit of 100ms */ 2482 led.off = off; 2483 led.on = on; 2484 2485 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1); 2486 } 2487 2488 static void 2489 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni) 2490 { 2491 struct wpi_cmd_tsf tsf; 2492 uint64_t val, mod; 2493 2494 memset(&tsf, 0, sizeof tsf); 2495 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8); 2496 tsf.bintval = htole16(ni->ni_intval); 2497 tsf.lintval = htole16(10); 2498 2499 /* compute remaining time until next beacon */ 2500 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */ 2501 mod = le64toh(tsf.tstamp) % val; 2502 tsf.binitval = htole32((uint32_t)(val - mod)); 2503 2504 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0) 2505 device_printf(sc->sc_dev, "could not enable TSF\n"); 2506 } 2507 2508 #if 0 2509 /* 2510 * Build a beacon frame that the firmware will broadcast periodically in 2511 * IBSS or HostAP modes. 2512 */ 2513 static int 2514 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni) 2515 { 2516 struct ifnet *ifp = sc->sc_ifp; 2517 struct ieee80211com *ic = ifp->if_l2com; 2518 struct wpi_tx_ring *ring = &sc->cmdq; 2519 struct wpi_tx_desc *desc; 2520 struct wpi_tx_data *data; 2521 struct wpi_tx_cmd *cmd; 2522 struct wpi_cmd_beacon *bcn; 2523 struct ieee80211_beacon_offsets bo; 2524 struct mbuf *m0; 2525 bus_addr_t physaddr; 2526 int error; 2527 2528 desc = &ring->desc[ring->cur]; 2529 data = &ring->data[ring->cur]; 2530 2531 m0 = ieee80211_beacon_alloc(ic, ni, &bo); 2532 if (m0 == NULL) { 2533 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2534 return ENOMEM; 2535 } 2536 2537 cmd = &ring->cmd[ring->cur]; 2538 cmd->code = WPI_CMD_SET_BEACON; 2539 cmd->flags = 0; 2540 cmd->qid = ring->qid; 2541 cmd->idx = ring->cur; 2542 2543 bcn = (struct wpi_cmd_beacon *)cmd->data; 2544 memset(bcn, 0, sizeof (struct wpi_cmd_beacon)); 2545 bcn->id = WPI_ID_BROADCAST; 2546 bcn->ofdm_mask = 0xff; 2547 bcn->cck_mask = 0x0f; 2548 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE); 2549 bcn->len = htole16(m0->m_pkthdr.len); 2550 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2551 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2552 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP); 2553 2554 /* save and trim IEEE802.11 header */ 2555 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh); 2556 m_adj(m0, sizeof (struct ieee80211_frame)); 2557 2558 /* assume beacon frame is contiguous */ 2559 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *), 2560 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0); 2561 if (error != 0) { 2562 device_printf(sc->sc_dev, "could not map beacon\n"); 2563 m_freem(m0); 2564 return error; 2565 } 2566 2567 data->m = m0; 2568 2569 /* first scatter/gather segment is used by the beacon command */ 2570 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24); 2571 desc->segs[0].addr = htole32(ring->cmd_dma.paddr + 2572 ring->cur * sizeof (struct wpi_tx_cmd)); 2573 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon)); 2574 desc->segs[1].addr = htole32(physaddr); 2575 desc->segs[1].len = htole32(m0->m_pkthdr.len); 2576 2577 /* kick cmd ring */ 2578 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2579 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2580 2581 return 0; 2582 } 2583 #endif 2584 2585 static int 2586 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap) 2587 { 2588 struct ieee80211com *ic = vap->iv_ic; 2589 struct ieee80211_node *ni = vap->iv_bss; 2590 struct wpi_node_info node; 2591 int error; 2592 2593 2594 /* update adapter's configuration */ 2595 sc->config.associd = 0; 2596 sc->config.filter &= ~htole32(WPI_FILTER_BSS); 2597 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid); 2598 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2599 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) { 2600 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2601 WPI_CONFIG_24GHZ); 2602 } else { 2603 sc->config.flags &= ~htole32(WPI_CONFIG_AUTO | 2604 WPI_CONFIG_24GHZ); 2605 } 2606 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) { 2607 sc->config.cck_mask = 0; 2608 sc->config.ofdm_mask = 0x15; 2609 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) { 2610 sc->config.cck_mask = 0x03; 2611 sc->config.ofdm_mask = 0; 2612 } else { 2613 /* XXX assume 802.11b/g */ 2614 sc->config.cck_mask = 0x0f; 2615 sc->config.ofdm_mask = 0x15; 2616 } 2617 2618 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan, 2619 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask)); 2620 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2621 sizeof (struct wpi_config), 1); 2622 if (error != 0) { 2623 device_printf(sc->sc_dev, "could not configure\n"); 2624 return error; 2625 } 2626 2627 /* configuration has changed, set Tx power accordingly */ 2628 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) { 2629 device_printf(sc->sc_dev, "could not set Tx power\n"); 2630 return error; 2631 } 2632 2633 /* add default node */ 2634 memset(&node, 0, sizeof node); 2635 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid); 2636 node.id = WPI_ID_BSS; 2637 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ? 2638 wpi_plcp_signal(12) : wpi_plcp_signal(2); 2639 node.action = htole32(WPI_ACTION_SET_RATE); 2640 node.antenna = WPI_ANTENNA_BOTH; 2641 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1); 2642 if (error != 0) 2643 device_printf(sc->sc_dev, "could not add BSS node\n"); 2644 2645 return (error); 2646 } 2647 2648 static int 2649 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap) 2650 { 2651 struct ieee80211com *ic = vap->iv_ic; 2652 struct ieee80211_node *ni = vap->iv_bss; 2653 int error; 2654 2655 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 2656 /* link LED blinks while monitoring */ 2657 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 2658 return 0; 2659 } 2660 2661 wpi_enable_tsf(sc, ni); 2662 2663 /* update adapter's configuration */ 2664 sc->config.associd = htole16(ni->ni_associd & ~0xc000); 2665 /* short preamble/slot time are negotiated when associating */ 2666 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE | 2667 WPI_CONFIG_SHSLOT); 2668 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2669 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT); 2670 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2671 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE); 2672 sc->config.filter |= htole32(WPI_FILTER_BSS); 2673 2674 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */ 2675 2676 DPRINTF(("config chan %d flags %x\n", sc->config.chan, 2677 sc->config.flags)); 2678 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct 2679 wpi_config), 1); 2680 if (error != 0) { 2681 device_printf(sc->sc_dev, "could not update configuration\n"); 2682 return error; 2683 } 2684 2685 error = wpi_set_txpower(sc, ni->ni_chan, 1); 2686 if (error != 0) { 2687 device_printf(sc->sc_dev, "could set txpower\n"); 2688 return error; 2689 } 2690 2691 /* link LED always on while associated */ 2692 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 2693 2694 /* start automatic rate control timer */ 2695 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 2696 2697 return (error); 2698 } 2699 2700 /* 2701 * Send a scan request to the firmware. Since this command is huge, we map it 2702 * into a mbufcluster instead of using the pre-allocated set of commands. Note, 2703 * much of this code is similar to that in wpi_cmd but because we must manually 2704 * construct the probe & channels, we duplicate what's needed here. XXX In the 2705 * future, this function should be modified to use wpi_cmd to help cleanup the 2706 * code base. 2707 */ 2708 static int 2709 wpi_scan(struct wpi_softc *sc) 2710 { 2711 struct ifnet *ifp = sc->sc_ifp; 2712 struct ieee80211com *ic = ifp->if_l2com; 2713 struct ieee80211_scan_state *ss = ic->ic_scan; 2714 struct wpi_tx_ring *ring = &sc->cmdq; 2715 struct wpi_tx_desc *desc; 2716 struct wpi_tx_data *data; 2717 struct wpi_tx_cmd *cmd; 2718 struct wpi_scan_hdr *hdr; 2719 struct wpi_scan_chan *chan; 2720 struct ieee80211_frame *wh; 2721 struct ieee80211_rateset *rs; 2722 struct ieee80211_channel *c; 2723 enum ieee80211_phymode mode; 2724 uint8_t *frm; 2725 int pktlen, error, i, nssid; 2726 bus_addr_t physaddr; 2727 2728 desc = &ring->desc[ring->cur]; 2729 data = &ring->data[ring->cur]; 2730 2731 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 2732 if (data->m == NULL) { 2733 device_printf(sc->sc_dev, 2734 "could not allocate mbuf for scan command\n"); 2735 return ENOMEM; 2736 } 2737 2738 cmd = mtod(data->m, struct wpi_tx_cmd *); 2739 cmd->code = WPI_CMD_SCAN; 2740 cmd->flags = 0; 2741 cmd->qid = ring->qid; 2742 cmd->idx = ring->cur; 2743 2744 hdr = (struct wpi_scan_hdr *)cmd->data; 2745 memset(hdr, 0, sizeof(struct wpi_scan_hdr)); 2746 2747 /* 2748 * Move to the next channel if no packets are received within 5 msecs 2749 * after sending the probe request (this helps to reduce the duration 2750 * of active scans). 2751 */ 2752 hdr->quiet = htole16(5); 2753 hdr->threshold = htole16(1); 2754 2755 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) { 2756 /* send probe requests at 6Mbps */ 2757 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6]; 2758 2759 /* Enable crc checking */ 2760 hdr->promotion = htole16(1); 2761 } else { 2762 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO); 2763 /* send probe requests at 1Mbps */ 2764 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1]; 2765 } 2766 hdr->tx.id = WPI_ID_BROADCAST; 2767 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE); 2768 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ); 2769 2770 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids)); 2771 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS); 2772 for (i = 0; i < nssid; i++) { 2773 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID; 2774 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, IEEE80211_NWID_LEN); 2775 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid, 2776 hdr->scan_essids[i].esslen); 2777 #ifdef WPI_DEBUG 2778 if (wpi_debug & WPI_DEBUG_SCANNING) { 2779 kprintf("Scanning Essid: "); 2780 ieee80211_print_essid(hdr->scan_essids[i].essid, 2781 hdr->scan_essids[i].esslen); 2782 kprintf("\n"); 2783 } 2784 #endif 2785 } 2786 2787 /* 2788 * Build a probe request frame. Most of the following code is a 2789 * copy & paste of what is done in net80211. 2790 */ 2791 wh = (struct ieee80211_frame *)&hdr->scan_essids[WPI_SCAN_MAX_ESSIDS]; 2792 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 2793 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 2794 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2795 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr); 2796 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp)); 2797 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr); 2798 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */ 2799 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */ 2800 2801 frm = (uint8_t *)(wh + 1); 2802 2803 mode = ieee80211_chan2mode(ic->ic_curchan); 2804 rs = &ic->ic_sup_rates[mode]; 2805 2806 frm = ieee80211_add_ssid(frm, NULL, 0); 2807 frm = ieee80211_add_rates(frm, rs); 2808 frm = ieee80211_add_xrates(frm, rs); 2809 2810 /* setup length of probe request */ 2811 hdr->tx.len = htole16(frm - (uint8_t *)wh); 2812 2813 /* 2814 * Construct information about the channel that we 2815 * want to scan. The firmware expects this to be directly 2816 * after the scan probe request 2817 */ 2818 c = ic->ic_curchan; 2819 chan = (struct wpi_scan_chan *)frm; 2820 chan->chan = ieee80211_chan2ieee(ic, c); 2821 chan->flags = 0; 2822 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2823 chan->flags |= WPI_CHAN_ACTIVE; 2824 if (nssid != 0) 2825 chan->flags |= WPI_CHAN_DIRECT; 2826 } 2827 chan->gain_dsp = 0x6e; /* Default level */ 2828 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2829 chan->active = htole16(10); 2830 chan->passive = htole16(ss->ss_maxdwell); 2831 chan->gain_radio = 0x3b; 2832 } else { 2833 chan->active = htole16(20); 2834 chan->passive = htole16(ss->ss_maxdwell); 2835 chan->gain_radio = 0x28; 2836 } 2837 2838 DPRINTFN(WPI_DEBUG_SCANNING, 2839 ("Scanning %u Passive: %d\n", 2840 chan->chan, 2841 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2842 2843 hdr->nchan++; 2844 chan++; 2845 2846 frm += sizeof (struct wpi_scan_chan); 2847 #if 0 2848 // XXX All Channels.... 2849 for (c = &ic->ic_channels[1]; 2850 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) { 2851 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags) 2852 continue; 2853 2854 chan->chan = ieee80211_chan2ieee(ic, c); 2855 chan->flags = 0; 2856 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) { 2857 chan->flags |= WPI_CHAN_ACTIVE; 2858 if (ic->ic_des_ssid[0].len != 0) 2859 chan->flags |= WPI_CHAN_DIRECT; 2860 } 2861 chan->gain_dsp = 0x6e; /* Default level */ 2862 if (IEEE80211_IS_CHAN_5GHZ(c)) { 2863 chan->active = htole16(10); 2864 chan->passive = htole16(110); 2865 chan->gain_radio = 0x3b; 2866 } else { 2867 chan->active = htole16(20); 2868 chan->passive = htole16(120); 2869 chan->gain_radio = 0x28; 2870 } 2871 2872 DPRINTFN(WPI_DEBUG_SCANNING, 2873 ("Scanning %u Passive: %d\n", 2874 chan->chan, 2875 c->ic_flags & IEEE80211_CHAN_PASSIVE)); 2876 2877 hdr->nchan++; 2878 chan++; 2879 2880 frm += sizeof (struct wpi_scan_chan); 2881 } 2882 #endif 2883 2884 hdr->len = htole16(frm - (uint8_t *)hdr); 2885 pktlen = frm - (uint8_t *)cmd; 2886 2887 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen, 2888 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT); 2889 if (error != 0) { 2890 device_printf(sc->sc_dev, "could not map scan command\n"); 2891 m_freem(data->m); 2892 data->m = NULL; 2893 return error; 2894 } 2895 2896 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24); 2897 desc->segs[0].addr = htole32(physaddr); 2898 desc->segs[0].len = htole32(pktlen); 2899 2900 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2901 BUS_DMASYNC_PREWRITE); 2902 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 2903 2904 /* kick cmd ring */ 2905 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT; 2906 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur); 2907 2908 sc->sc_scan_timer = 5; 2909 return 0; /* will be notified async. of failure/success */ 2910 } 2911 2912 /** 2913 * Configure the card to listen to a particular channel, this transisions the 2914 * card in to being able to receive frames from remote devices. 2915 */ 2916 static int 2917 wpi_config(struct wpi_softc *sc) 2918 { 2919 struct ifnet *ifp = sc->sc_ifp; 2920 struct ieee80211com *ic = ifp->if_l2com; 2921 struct wpi_power power; 2922 struct wpi_bluetooth bluetooth; 2923 struct wpi_node_info node; 2924 int error; 2925 2926 /* set power mode */ 2927 memset(&power, 0, sizeof power); 2928 power.flags = htole32(WPI_POWER_CAM|0x8); 2929 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0); 2930 if (error != 0) { 2931 device_printf(sc->sc_dev, "could not set power mode\n"); 2932 return error; 2933 } 2934 2935 /* configure bluetooth coexistence */ 2936 memset(&bluetooth, 0, sizeof bluetooth); 2937 bluetooth.flags = 3; 2938 bluetooth.lead = 0xaa; 2939 bluetooth.kill = 1; 2940 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth, 2941 0); 2942 if (error != 0) { 2943 device_printf(sc->sc_dev, 2944 "could not configure bluetooth coexistence\n"); 2945 return error; 2946 } 2947 2948 /* configure adapter */ 2949 memset(&sc->config, 0, sizeof (struct wpi_config)); 2950 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp)); 2951 /*set default channel*/ 2952 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan)); 2953 sc->config.flags = htole32(WPI_CONFIG_TSF); 2954 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2955 sc->config.flags |= htole32(WPI_CONFIG_AUTO | 2956 WPI_CONFIG_24GHZ); 2957 } 2958 sc->config.filter = 0; 2959 switch (ic->ic_opmode) { 2960 case IEEE80211_M_STA: 2961 case IEEE80211_M_WDS: /* No know setup, use STA for now */ 2962 sc->config.mode = WPI_MODE_STA; 2963 sc->config.filter |= htole32(WPI_FILTER_MULTICAST); 2964 break; 2965 case IEEE80211_M_IBSS: 2966 case IEEE80211_M_AHDEMO: 2967 sc->config.mode = WPI_MODE_IBSS; 2968 sc->config.filter |= htole32(WPI_FILTER_BEACON | 2969 WPI_FILTER_MULTICAST); 2970 break; 2971 case IEEE80211_M_HOSTAP: 2972 sc->config.mode = WPI_MODE_HOSTAP; 2973 break; 2974 case IEEE80211_M_MONITOR: 2975 sc->config.mode = WPI_MODE_MONITOR; 2976 sc->config.filter |= htole32(WPI_FILTER_MULTICAST | 2977 WPI_FILTER_CTL | WPI_FILTER_PROMISC); 2978 break; 2979 default: 2980 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode); 2981 return EINVAL; 2982 } 2983 sc->config.cck_mask = 0x0f; /* not yet negotiated */ 2984 sc->config.ofdm_mask = 0xff; /* not yet negotiated */ 2985 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, 2986 sizeof (struct wpi_config), 0); 2987 if (error != 0) { 2988 device_printf(sc->sc_dev, "configure command failed\n"); 2989 return error; 2990 } 2991 2992 /* configuration has changed, set Tx power accordingly */ 2993 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) { 2994 device_printf(sc->sc_dev, "could not set Tx power\n"); 2995 return error; 2996 } 2997 2998 /* add broadcast node */ 2999 memset(&node, 0, sizeof node); 3000 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr); 3001 node.id = WPI_ID_BROADCAST; 3002 node.rate = wpi_plcp_signal(2); 3003 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0); 3004 if (error != 0) { 3005 device_printf(sc->sc_dev, "could not add broadcast node\n"); 3006 return error; 3007 } 3008 3009 /* Setup rate scalling */ 3010 error = wpi_mrr_setup(sc); 3011 if (error != 0) { 3012 device_printf(sc->sc_dev, "could not setup MRR\n"); 3013 return error; 3014 } 3015 3016 return 0; 3017 } 3018 3019 static void 3020 wpi_stop_master(struct wpi_softc *sc) 3021 { 3022 uint32_t tmp; 3023 int ntries; 3024 3025 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n")); 3026 3027 tmp = WPI_READ(sc, WPI_RESET); 3028 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET); 3029 3030 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3031 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP) 3032 return; /* already asleep */ 3033 3034 for (ntries = 0; ntries < 100; ntries++) { 3035 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED) 3036 break; 3037 DELAY(10); 3038 } 3039 if (ntries == 100) { 3040 device_printf(sc->sc_dev, "timeout waiting for master\n"); 3041 } 3042 } 3043 3044 static int 3045 wpi_power_up(struct wpi_softc *sc) 3046 { 3047 uint32_t tmp; 3048 int ntries; 3049 3050 wpi_mem_lock(sc); 3051 tmp = wpi_mem_read(sc, WPI_MEM_POWER); 3052 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000); 3053 wpi_mem_unlock(sc); 3054 3055 for (ntries = 0; ntries < 5000; ntries++) { 3056 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED) 3057 break; 3058 DELAY(10); 3059 } 3060 if (ntries == 5000) { 3061 device_printf(sc->sc_dev, 3062 "timeout waiting for NIC to power up\n"); 3063 return ETIMEDOUT; 3064 } 3065 return 0; 3066 } 3067 3068 static int 3069 wpi_reset(struct wpi_softc *sc) 3070 { 3071 uint32_t tmp; 3072 int ntries; 3073 3074 DPRINTFN(WPI_DEBUG_HW, 3075 ("Resetting the card - clearing any uploaded firmware\n")); 3076 3077 /* clear any pending interrupts */ 3078 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3079 3080 tmp = WPI_READ(sc, WPI_PLL_CTL); 3081 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT); 3082 3083 tmp = WPI_READ(sc, WPI_CHICKEN); 3084 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS); 3085 3086 tmp = WPI_READ(sc, WPI_GPIO_CTL); 3087 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT); 3088 3089 /* wait for clock stabilization */ 3090 for (ntries = 0; ntries < 25000; ntries++) { 3091 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK) 3092 break; 3093 DELAY(10); 3094 } 3095 if (ntries == 25000) { 3096 device_printf(sc->sc_dev, 3097 "timeout waiting for clock stabilization\n"); 3098 return ETIMEDOUT; 3099 } 3100 3101 /* initialize EEPROM */ 3102 tmp = WPI_READ(sc, WPI_EEPROM_STATUS); 3103 3104 if ((tmp & WPI_EEPROM_VERSION) == 0) { 3105 device_printf(sc->sc_dev, "EEPROM not found\n"); 3106 return EIO; 3107 } 3108 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED); 3109 3110 return 0; 3111 } 3112 3113 static void 3114 wpi_hw_config(struct wpi_softc *sc) 3115 { 3116 uint32_t rev, hw; 3117 3118 /* voodoo from the Linux "driver".. */ 3119 hw = WPI_READ(sc, WPI_HWCONFIG); 3120 3121 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1); 3122 if ((rev & 0xc0) == 0x40) 3123 hw |= WPI_HW_ALM_MB; 3124 else if (!(rev & 0x80)) 3125 hw |= WPI_HW_ALM_MM; 3126 3127 if (sc->cap == 0x80) 3128 hw |= WPI_HW_SKU_MRC; 3129 3130 hw &= ~WPI_HW_REV_D; 3131 if ((le16toh(sc->rev) & 0xf0) == 0xd0) 3132 hw |= WPI_HW_REV_D; 3133 3134 if (sc->type > 1) 3135 hw |= WPI_HW_TYPE_B; 3136 3137 WPI_WRITE(sc, WPI_HWCONFIG, hw); 3138 } 3139 3140 static void 3141 wpi_rfkill_resume(struct wpi_softc *sc) 3142 { 3143 struct ifnet *ifp = sc->sc_ifp; 3144 struct ieee80211com *ic = ifp->if_l2com; 3145 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3146 int ntries; 3147 3148 /* enable firmware again */ 3149 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3150 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3151 3152 /* wait for thermal sensors to calibrate */ 3153 for (ntries = 0; ntries < 1000; ntries++) { 3154 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3155 break; 3156 DELAY(10); 3157 } 3158 3159 if (ntries == 1000) { 3160 device_printf(sc->sc_dev, 3161 "timeout waiting for thermal calibration\n"); 3162 return; 3163 } 3164 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3165 3166 if (wpi_config(sc) != 0) { 3167 device_printf(sc->sc_dev, "device config failed\n"); 3168 return; 3169 } 3170 3171 #if defined(__DragonFly__) 3172 ifq_clr_oactive(&ifp->if_snd); 3173 ifp->if_flags |= IFF_RUNNING; 3174 #else 3175 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3176 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3177 #endif 3178 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3179 3180 if (vap != NULL) { 3181 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3182 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 3183 ieee80211_beacon_miss(ic); 3184 wpi_set_led(sc, WPI_LED_LINK, 0, 1); 3185 } else 3186 wpi_set_led(sc, WPI_LED_LINK, 5, 5); 3187 } else { 3188 ieee80211_scan_next(vap); 3189 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3190 } 3191 } 3192 3193 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3194 } 3195 3196 static void 3197 wpi_init_locked(struct wpi_softc *sc, int force) 3198 { 3199 struct ifnet *ifp = sc->sc_ifp; 3200 uint32_t tmp; 3201 int ntries, qid; 3202 3203 wpi_stop_locked(sc); 3204 (void)wpi_reset(sc); 3205 3206 wpi_mem_lock(sc); 3207 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00); 3208 DELAY(20); 3209 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV); 3210 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800); 3211 wpi_mem_unlock(sc); 3212 3213 (void)wpi_power_up(sc); 3214 wpi_hw_config(sc); 3215 3216 /* init Rx ring */ 3217 wpi_mem_lock(sc); 3218 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr); 3219 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr + 3220 offsetof(struct wpi_shared, next)); 3221 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7); 3222 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010); 3223 wpi_mem_unlock(sc); 3224 3225 /* init Tx rings */ 3226 wpi_mem_lock(sc); 3227 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */ 3228 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */ 3229 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */ 3230 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000); 3231 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002); 3232 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4); 3233 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5); 3234 3235 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr); 3236 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5); 3237 3238 for (qid = 0; qid < 6; qid++) { 3239 WPI_WRITE(sc, WPI_TX_CTL(qid), 0); 3240 WPI_WRITE(sc, WPI_TX_BASE(qid), 0); 3241 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008); 3242 } 3243 wpi_mem_unlock(sc); 3244 3245 /* clear "radio off" and "disable command" bits (reversed logic) */ 3246 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3247 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD); 3248 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3249 3250 /* clear any pending interrupts */ 3251 WPI_WRITE(sc, WPI_INTR, 0xffffffff); 3252 3253 /* enable interrupts */ 3254 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK); 3255 3256 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3257 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF); 3258 3259 if ((wpi_load_firmware(sc)) != 0) { 3260 device_printf(sc->sc_dev, 3261 "A problem occurred loading the firmware to the driver\n"); 3262 return; 3263 } 3264 3265 /* At this point the firmware is up and running. If the hardware 3266 * RF switch is turned off thermal calibration will fail, though 3267 * the card is still happy to continue to accept commands, catch 3268 * this case and schedule a task to watch for it to be turned on. 3269 */ 3270 wpi_mem_lock(sc); 3271 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3272 wpi_mem_unlock(sc); 3273 3274 if (!(tmp & 0x1)) { 3275 sc->flags |= WPI_FLAG_HW_RADIO_OFF; 3276 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n"); 3277 goto out; 3278 } 3279 3280 /* wait for thermal sensors to calibrate */ 3281 for (ntries = 0; ntries < 1000; ntries++) { 3282 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0) 3283 break; 3284 DELAY(10); 3285 } 3286 3287 if (ntries == 1000) { 3288 device_printf(sc->sc_dev, 3289 "timeout waiting for thermal sensors calibration\n"); 3290 return; 3291 } 3292 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp)); 3293 3294 if (wpi_config(sc) != 0) { 3295 device_printf(sc->sc_dev, "device config failed\n"); 3296 return; 3297 } 3298 3299 #if defined(__DragonFly__) 3300 ifq_clr_oactive(&ifp->if_snd); 3301 ifp->if_flags |= IFF_RUNNING; 3302 #else 3303 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3304 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3305 #endif 3306 out: 3307 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3308 } 3309 3310 static void 3311 wpi_init(void *arg) 3312 { 3313 struct wpi_softc *sc = arg; 3314 struct ifnet *ifp = sc->sc_ifp; 3315 struct ieee80211com *ic = ifp->if_l2com; 3316 3317 WPI_LOCK(sc); 3318 wpi_init_locked(sc, 0); 3319 WPI_UNLOCK(sc); 3320 3321 #if defined(__DragonFly__) 3322 if (ifp->if_flags & IFF_RUNNING) 3323 ieee80211_start_all(ic); /* start all vaps */ 3324 #else 3325 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3326 ieee80211_start_all(ic); /* start all vaps */ 3327 #endif 3328 } 3329 3330 static void 3331 wpi_stop_locked(struct wpi_softc *sc) 3332 { 3333 struct ifnet *ifp = sc->sc_ifp; 3334 uint32_t tmp; 3335 int ac; 3336 3337 sc->sc_tx_timer = 0; 3338 sc->sc_scan_timer = 0; 3339 #if defined(__DragonFly__) 3340 ifq_clr_oactive(&ifp->if_snd); 3341 ifp->if_flags &= ~IFF_RUNNING; 3342 #else 3343 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3344 #endif 3345 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF; 3346 callout_stop_sync(&sc->watchdog_to); 3347 callout_stop_sync(&sc->calib_to); 3348 3349 /* disable interrupts */ 3350 WPI_WRITE(sc, WPI_MASK, 0); 3351 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK); 3352 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff); 3353 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000); 3354 3355 wpi_mem_lock(sc); 3356 wpi_mem_write(sc, WPI_MEM_MODE, 0); 3357 wpi_mem_unlock(sc); 3358 3359 /* reset all Tx rings */ 3360 for (ac = 0; ac < 4; ac++) 3361 wpi_reset_tx_ring(sc, &sc->txq[ac]); 3362 wpi_reset_tx_ring(sc, &sc->cmdq); 3363 3364 /* reset Rx ring */ 3365 wpi_reset_rx_ring(sc, &sc->rxq); 3366 3367 wpi_mem_lock(sc); 3368 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200); 3369 wpi_mem_unlock(sc); 3370 3371 DELAY(5); 3372 3373 wpi_stop_master(sc); 3374 3375 tmp = WPI_READ(sc, WPI_RESET); 3376 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET); 3377 sc->flags &= ~WPI_FLAG_BUSY; 3378 } 3379 3380 static void 3381 wpi_stop(struct wpi_softc *sc) 3382 { 3383 WPI_LOCK(sc); 3384 wpi_stop_locked(sc); 3385 WPI_UNLOCK(sc); 3386 } 3387 3388 static void 3389 wpi_calib_timeout(void *arg) 3390 { 3391 struct wpi_softc *sc = arg; 3392 struct ifnet *ifp = sc->sc_ifp; 3393 struct ieee80211com *ic = ifp->if_l2com; 3394 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3395 int temp; 3396 3397 if (vap->iv_state != IEEE80211_S_RUN) 3398 return; 3399 3400 /* update sensor data */ 3401 temp = (int)WPI_READ(sc, WPI_TEMPERATURE); 3402 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp)); 3403 3404 wpi_power_calibration(sc, temp); 3405 3406 callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc); 3407 } 3408 3409 /* 3410 * This function is called periodically (every 60 seconds) to adjust output 3411 * power to temperature changes. 3412 */ 3413 static void 3414 wpi_power_calibration(struct wpi_softc *sc, int temp) 3415 { 3416 struct ifnet *ifp = sc->sc_ifp; 3417 struct ieee80211com *ic = ifp->if_l2com; 3418 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3419 3420 /* sanity-check read value */ 3421 if (temp < -260 || temp > 25) { 3422 /* this can't be correct, ignore */ 3423 DPRINTFN(WPI_DEBUG_TEMP, 3424 ("out-of-range temperature reported: %d\n", temp)); 3425 return; 3426 } 3427 3428 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp)); 3429 3430 /* adjust Tx power if need be */ 3431 if (abs(temp - sc->temp) <= 6) 3432 return; 3433 3434 sc->temp = temp; 3435 3436 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) { 3437 /* just warn, too bad for the automatic calibration... */ 3438 device_printf(sc->sc_dev,"could not adjust Tx power\n"); 3439 } 3440 } 3441 3442 /** 3443 * Read the eeprom to find out what channels are valid for the given 3444 * band and update net80211 with what we find. 3445 */ 3446 static void 3447 wpi_read_eeprom_channels(struct wpi_softc *sc, int n) 3448 { 3449 struct ifnet *ifp = sc->sc_ifp; 3450 struct ieee80211com *ic = ifp->if_l2com; 3451 const struct wpi_chan_band *band = &wpi_bands[n]; 3452 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND]; 3453 struct ieee80211_channel *c; 3454 int chan, i, passive; 3455 3456 wpi_read_prom_data(sc, band->addr, channels, 3457 band->nchan * sizeof (struct wpi_eeprom_chan)); 3458 3459 for (i = 0; i < band->nchan; i++) { 3460 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) { 3461 DPRINTFN(WPI_DEBUG_HW, 3462 ("Channel Not Valid: %d, band %d\n", 3463 band->chan[i],n)); 3464 continue; 3465 } 3466 3467 passive = 0; 3468 chan = band->chan[i]; 3469 c = &ic->ic_channels[ic->ic_nchans++]; 3470 3471 /* is active scan allowed on this channel? */ 3472 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) { 3473 passive = IEEE80211_CHAN_PASSIVE; 3474 } 3475 3476 if (n == 0) { /* 2GHz band */ 3477 c->ic_ieee = chan; 3478 c->ic_freq = ieee80211_ieee2mhz(chan, 3479 IEEE80211_CHAN_2GHZ); 3480 c->ic_flags = IEEE80211_CHAN_B | passive; 3481 3482 c = &ic->ic_channels[ic->ic_nchans++]; 3483 c->ic_ieee = chan; 3484 c->ic_freq = ieee80211_ieee2mhz(chan, 3485 IEEE80211_CHAN_2GHZ); 3486 c->ic_flags = IEEE80211_CHAN_G | passive; 3487 3488 } else { /* 5GHz band */ 3489 /* 3490 * Some 3945ABG adapters support channels 7, 8, 11 3491 * and 12 in the 2GHz *and* 5GHz bands. 3492 * Because of limitations in our net80211(9) stack, 3493 * we can't support these channels in 5GHz band. 3494 * XXX not true; just need to map to proper frequency 3495 */ 3496 if (chan <= 14) 3497 continue; 3498 3499 c->ic_ieee = chan; 3500 c->ic_freq = ieee80211_ieee2mhz(chan, 3501 IEEE80211_CHAN_5GHZ); 3502 c->ic_flags = IEEE80211_CHAN_A | passive; 3503 } 3504 3505 /* save maximum allowed power for this channel */ 3506 sc->maxpwr[chan] = channels[i].maxpwr; 3507 3508 #if 0 3509 // XXX We can probably use this an get rid of maxpwr - ben 20070617 3510 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr; 3511 //ic->ic_channels[chan].ic_minpower... 3512 //ic->ic_channels[chan].ic_maxregtxpower... 3513 #endif 3514 3515 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d" 3516 " passive=%d, offset %d\n", chan, c->ic_freq, 3517 channels[i].flags, sc->maxpwr[chan], 3518 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0, 3519 ic->ic_nchans)); 3520 } 3521 } 3522 3523 static void 3524 wpi_read_eeprom_group(struct wpi_softc *sc, int n) 3525 { 3526 struct wpi_power_group *group = &sc->groups[n]; 3527 struct wpi_eeprom_group rgroup; 3528 int i; 3529 3530 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup, 3531 sizeof rgroup); 3532 3533 /* save power group information */ 3534 group->chan = rgroup.chan; 3535 group->maxpwr = rgroup.maxpwr; 3536 /* temperature at which the samples were taken */ 3537 group->temp = (int16_t)le16toh(rgroup.temp); 3538 3539 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n, 3540 group->chan, group->maxpwr, group->temp)); 3541 3542 for (i = 0; i < WPI_SAMPLES_COUNT; i++) { 3543 group->samples[i].index = rgroup.samples[i].index; 3544 group->samples[i].power = rgroup.samples[i].power; 3545 3546 DPRINTF(("\tsample %d: index=%d power=%d\n", i, 3547 group->samples[i].index, group->samples[i].power)); 3548 } 3549 } 3550 3551 /* 3552 * Update Tx power to match what is defined for channel `c'. 3553 */ 3554 static int 3555 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async) 3556 { 3557 struct ifnet *ifp = sc->sc_ifp; 3558 struct ieee80211com *ic = ifp->if_l2com; 3559 struct wpi_power_group *group; 3560 struct wpi_cmd_txpower txpower; 3561 u_int chan; 3562 int i; 3563 3564 /* get channel number */ 3565 chan = ieee80211_chan2ieee(ic, c); 3566 3567 /* find the power group to which this channel belongs */ 3568 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3569 for (group = &sc->groups[1]; group < &sc->groups[4]; group++) 3570 if (chan <= group->chan) 3571 break; 3572 } else 3573 group = &sc->groups[0]; 3574 3575 memset(&txpower, 0, sizeof txpower); 3576 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1; 3577 txpower.channel = htole16(chan); 3578 3579 /* set Tx power for all OFDM and CCK rates */ 3580 for (i = 0; i <= 11 ; i++) { 3581 /* retrieve Tx power for this channel/rate combination */ 3582 int idx = wpi_get_power_index(sc, group, c, 3583 wpi_ridx_to_rate[i]); 3584 3585 txpower.rates[i].rate = wpi_ridx_to_plcp[i]; 3586 3587 if (IEEE80211_IS_CHAN_5GHZ(c)) { 3588 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx]; 3589 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx]; 3590 } else { 3591 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx]; 3592 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx]; 3593 } 3594 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n", 3595 chan, wpi_ridx_to_rate[i], idx)); 3596 } 3597 3598 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async); 3599 } 3600 3601 /* 3602 * Determine Tx power index for a given channel/rate combination. 3603 * This takes into account the regulatory information from EEPROM and the 3604 * current temperature. 3605 */ 3606 static int 3607 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group, 3608 struct ieee80211_channel *c, int rate) 3609 { 3610 /* fixed-point arithmetic division using a n-bit fractional part */ 3611 #define fdivround(a, b, n) \ 3612 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 3613 3614 /* linear interpolation */ 3615 #define interpolate(x, x1, y1, x2, y2, n) \ 3616 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 3617 3618 struct ifnet *ifp = sc->sc_ifp; 3619 struct ieee80211com *ic = ifp->if_l2com; 3620 struct wpi_power_sample *sample; 3621 int pwr, idx; 3622 u_int chan; 3623 3624 /* get channel number */ 3625 chan = ieee80211_chan2ieee(ic, c); 3626 3627 /* default power is group's maximum power - 3dB */ 3628 pwr = group->maxpwr / 2; 3629 3630 /* decrease power for highest OFDM rates to reduce distortion */ 3631 switch (rate) { 3632 case 72: /* 36Mb/s */ 3633 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5; 3634 break; 3635 case 96: /* 48Mb/s */ 3636 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10; 3637 break; 3638 case 108: /* 54Mb/s */ 3639 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12; 3640 break; 3641 } 3642 3643 /* never exceed channel's maximum allowed Tx power */ 3644 pwr = min(pwr, sc->maxpwr[chan]); 3645 3646 /* retrieve power index into gain tables from samples */ 3647 for (sample = group->samples; sample < &group->samples[3]; sample++) 3648 if (pwr > sample[1].power) 3649 break; 3650 /* fixed-point linear interpolation using a 19-bit fractional part */ 3651 idx = interpolate(pwr, sample[0].power, sample[0].index, 3652 sample[1].power, sample[1].index, 19); 3653 3654 /* 3655 * Adjust power index based on current temperature 3656 * - if colder than factory-calibrated: decreate output power 3657 * - if warmer than factory-calibrated: increase output power 3658 */ 3659 idx -= (sc->temp - group->temp) * 11 / 100; 3660 3661 /* decrease power for CCK rates (-5dB) */ 3662 if (!WPI_RATE_IS_OFDM(rate)) 3663 idx += 10; 3664 3665 /* keep power index in a valid range */ 3666 if (idx < 0) 3667 return 0; 3668 if (idx > WPI_MAX_PWR_INDEX) 3669 return WPI_MAX_PWR_INDEX; 3670 return idx; 3671 3672 #undef interpolate 3673 #undef fdivround 3674 } 3675 3676 /** 3677 * Called by net80211 framework to indicate that a scan 3678 * is starting. This function doesn't actually do the scan, 3679 * wpi_scan_curchan starts things off. This function is more 3680 * of an early warning from the framework we should get ready 3681 * for the scan. 3682 */ 3683 static void 3684 wpi_scan_start(struct ieee80211com *ic) 3685 { 3686 struct ifnet *ifp = ic->ic_ifp; 3687 struct wpi_softc *sc = ifp->if_softc; 3688 3689 WPI_LOCK(sc); 3690 wpi_set_led(sc, WPI_LED_LINK, 20, 2); 3691 WPI_UNLOCK(sc); 3692 } 3693 3694 /** 3695 * Called by the net80211 framework, indicates that the 3696 * scan has ended. If there is a scan in progress on the card 3697 * then it should be aborted. 3698 */ 3699 static void 3700 wpi_scan_end(struct ieee80211com *ic) 3701 { 3702 /* XXX ignore */ 3703 } 3704 3705 /** 3706 * Called by the net80211 framework to indicate to the driver 3707 * that the channel should be changed 3708 */ 3709 static void 3710 wpi_set_channel(struct ieee80211com *ic) 3711 { 3712 struct ifnet *ifp = ic->ic_ifp; 3713 struct wpi_softc *sc = ifp->if_softc; 3714 int error; 3715 3716 /* 3717 * Only need to set the channel in Monitor mode. AP scanning and auth 3718 * are already taken care of by their respective firmware commands. 3719 */ 3720 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 3721 WPI_LOCK(sc); 3722 error = wpi_config(sc); 3723 WPI_UNLOCK(sc); 3724 if (error != 0) 3725 device_printf(sc->sc_dev, 3726 "error %d settting channel\n", error); 3727 } 3728 } 3729 3730 /** 3731 * Called by net80211 to indicate that we need to scan the current 3732 * channel. The channel is previously be set via the wpi_set_channel 3733 * callback. 3734 */ 3735 static void 3736 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3737 { 3738 struct ieee80211vap *vap = ss->ss_vap; 3739 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3740 struct wpi_softc *sc = ifp->if_softc; 3741 3742 WPI_LOCK(sc); 3743 if (wpi_scan(sc)) 3744 ieee80211_cancel_scan(vap); 3745 WPI_UNLOCK(sc); 3746 } 3747 3748 /** 3749 * Called by the net80211 framework to indicate 3750 * the minimum dwell time has been met, terminate the scan. 3751 * We don't actually terminate the scan as the firmware will notify 3752 * us when it's finished and we have no way to interrupt it. 3753 */ 3754 static void 3755 wpi_scan_mindwell(struct ieee80211_scan_state *ss) 3756 { 3757 /* NB: don't try to abort scan; wait for firmware to finish */ 3758 } 3759 3760 static void 3761 wpi_hwreset(void *arg, int pending) 3762 { 3763 struct wpi_softc *sc = arg; 3764 3765 WPI_LOCK(sc); 3766 wpi_init_locked(sc, 0); 3767 WPI_UNLOCK(sc); 3768 } 3769 3770 static void 3771 wpi_rfreset(void *arg, int pending) 3772 { 3773 struct wpi_softc *sc = arg; 3774 3775 WPI_LOCK(sc); 3776 wpi_rfkill_resume(sc); 3777 WPI_UNLOCK(sc); 3778 } 3779 3780 /* 3781 * Allocate DMA-safe memory for firmware transfer. 3782 */ 3783 static int 3784 wpi_alloc_fwmem(struct wpi_softc *sc) 3785 { 3786 /* allocate enough contiguous space to store text and data */ 3787 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL, 3788 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1, 3789 BUS_DMA_NOWAIT); 3790 } 3791 3792 static void 3793 wpi_free_fwmem(struct wpi_softc *sc) 3794 { 3795 wpi_dma_contig_free(&sc->fw_dma); 3796 } 3797 3798 /** 3799 * Called every second, wpi_watchdog used by the watch dog timer 3800 * to check that the card is still alive 3801 */ 3802 static void 3803 wpi_watchdog(void *arg) 3804 { 3805 struct wpi_softc *sc = arg; 3806 struct ifnet *ifp = sc->sc_ifp; 3807 struct ieee80211com *ic = ifp->if_l2com; 3808 uint32_t tmp; 3809 3810 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n")); 3811 3812 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) { 3813 /* No need to lock firmware memory */ 3814 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF); 3815 3816 if ((tmp & 0x1) == 0) { 3817 /* Radio kill switch is still off */ 3818 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3819 return; 3820 } 3821 3822 device_printf(sc->sc_dev, "Hardware Switch Enabled\n"); 3823 ieee80211_runtask(ic, &sc->sc_radiotask); 3824 return; 3825 } 3826 3827 if (sc->sc_tx_timer > 0) { 3828 if (--sc->sc_tx_timer == 0) { 3829 device_printf(sc->sc_dev,"device timeout\n"); 3830 #if defined(__DragonFly__) 3831 IFNET_STAT_INC(ifp, oerrors, 1); 3832 #else 3833 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 3834 #endif 3835 ieee80211_runtask(ic, &sc->sc_restarttask); 3836 } 3837 } 3838 if (sc->sc_scan_timer > 0) { 3839 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3840 if (--sc->sc_scan_timer == 0 && vap != NULL) { 3841 device_printf(sc->sc_dev,"scan timeout\n"); 3842 ieee80211_cancel_scan(vap); 3843 ieee80211_runtask(ic, &sc->sc_restarttask); 3844 } 3845 } 3846 3847 #if defined(__DragonFly__) 3848 if (ifp->if_flags & IFF_RUNNING) 3849 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3850 #else 3851 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3852 callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc); 3853 #endif 3854 } 3855 3856 #if defined(__DragonFly__) 3857 static int 3858 wpi_sleep(struct wpi_softc *sc, void *wchan, 3859 int flags, const char *wmsg, int timo) 3860 { 3861 int iws; 3862 int error; 3863 iws = wlan_is_serialized(); 3864 if (iws) 3865 wlan_serialize_exit(); 3866 error = lksleep(wchan, &sc->sc_mtx, flags, wmsg, timo); 3867 if (iws) 3868 wlan_serialize_enter(); 3869 return error; 3870 } 3871 #endif 3872 3873 3874 #ifdef WPI_DEBUG 3875 static const char *wpi_cmd_str(int cmd) 3876 { 3877 switch (cmd) { 3878 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD"; 3879 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE"; 3880 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE"; 3881 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME"; 3882 case WPI_CMD_TSF: return "WPI_CMD_TSF"; 3883 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE"; 3884 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA"; 3885 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP"; 3886 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED"; 3887 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE"; 3888 case WPI_CMD_SCAN: return "WPI_CMD_SCAN"; 3889 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON"; 3890 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER"; 3891 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH"; 3892 3893 default: 3894 KASSERT(1, ("Unknown Command: %d", cmd)); 3895 return "UNKNOWN CMD"; /* Make the compiler happy */ 3896 } 3897 } 3898 #endif 3899 3900 MODULE_DEPEND(wpi, pci, 1, 1, 1); 3901 MODULE_DEPEND(wpi, wlan, 1, 1, 1); 3902 MODULE_DEPEND(wpi, firmware, 1, 1, 1); 3903