1 /* $FreeBSD$ */ 2 3 /*- 4 * Copyright (c) 2005, 2006 5 * Damien Bergamini <damien.bergamini@free.fr> 6 * 7 * Copyright (c) 2006, 2008 8 * Hans Petter Selasky <hselasky@FreeBSD.org> 9 * 10 * Permission to use, copy, modify, and distribute this software for any 11 * purpose with or without fee is hereby granted, provided that the above 12 * copyright notice and this permission notice appear in all copies. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 15 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 16 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 17 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 19 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 20 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 21 */ 22 23 #include <sys/cdefs.h> 24 __FBSDID("$FreeBSD$"); 25 26 /*- 27 * Ralink Technology RT2500USB chipset driver 28 * http://www.ralinktech.com/ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/sockio.h> 33 #include <sys/sysctl.h> 34 #include <sys/lock.h> 35 #include <sys/mutex.h> 36 #include <sys/mbuf.h> 37 #include <sys/kernel.h> 38 #include <sys/socket.h> 39 #include <sys/systm.h> 40 #include <sys/malloc.h> 41 #include <sys/module.h> 42 #include <sys/bus.h> 43 #include <sys/endian.h> 44 #include <sys/kdb.h> 45 46 #include <machine/bus.h> 47 #include <machine/resource.h> 48 #include <sys/rman.h> 49 50 #include <net/bpf.h> 51 #include <net/if.h> 52 #include <net/if_var.h> 53 #include <net/if_arp.h> 54 #include <net/ethernet.h> 55 #include <net/if_dl.h> 56 #include <net/if_media.h> 57 #include <net/if_types.h> 58 59 #ifdef INET 60 #include <netinet/in.h> 61 #include <netinet/in_systm.h> 62 #include <netinet/in_var.h> 63 #include <netinet/if_ether.h> 64 #include <netinet/ip.h> 65 #endif 66 67 #include <net80211/ieee80211_var.h> 68 #include <net80211/ieee80211_regdomain.h> 69 #include <net80211/ieee80211_radiotap.h> 70 #include <net80211/ieee80211_ratectl.h> 71 72 #include <dev/usb/usb.h> 73 #include <dev/usb/usbdi.h> 74 #include "usbdevs.h" 75 76 #define USB_DEBUG_VAR ural_debug 77 #include <dev/usb/usb_debug.h> 78 79 #include <dev/usb/wlan/if_uralreg.h> 80 #include <dev/usb/wlan/if_uralvar.h> 81 82 #ifdef USB_DEBUG 83 static int ural_debug = 0; 84 85 static SYSCTL_NODE(_hw_usb, OID_AUTO, ural, CTLFLAG_RW, 0, "USB ural"); 86 SYSCTL_INT(_hw_usb_ural, OID_AUTO, debug, CTLFLAG_RWTUN, &ural_debug, 0, 87 "Debug level"); 88 #endif 89 90 #define URAL_RSSI(rssi) \ 91 ((rssi) > (RAL_NOISE_FLOOR + RAL_RSSI_CORR) ? \ 92 ((rssi) - (RAL_NOISE_FLOOR + RAL_RSSI_CORR)) : 0) 93 94 /* various supported device vendors/products */ 95 static const STRUCT_USB_HOST_ID ural_devs[] = { 96 #define URAL_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 97 URAL_DEV(ASUS, WL167G), 98 URAL_DEV(ASUS, RT2570), 99 URAL_DEV(BELKIN, F5D7050), 100 URAL_DEV(BELKIN, F5D7051), 101 URAL_DEV(CISCOLINKSYS, HU200TS), 102 URAL_DEV(CISCOLINKSYS, WUSB54G), 103 URAL_DEV(CISCOLINKSYS, WUSB54GP), 104 URAL_DEV(CONCEPTRONIC2, C54RU), 105 URAL_DEV(DLINK, DWLG122), 106 URAL_DEV(GIGABYTE, GN54G), 107 URAL_DEV(GIGABYTE, GNWBKG), 108 URAL_DEV(GUILLEMOT, HWGUSB254), 109 URAL_DEV(MELCO, KG54), 110 URAL_DEV(MELCO, KG54AI), 111 URAL_DEV(MELCO, KG54YB), 112 URAL_DEV(MELCO, NINWIFI), 113 URAL_DEV(MSI, RT2570), 114 URAL_DEV(MSI, RT2570_2), 115 URAL_DEV(MSI, RT2570_3), 116 URAL_DEV(NOVATECH, NV902), 117 URAL_DEV(RALINK, RT2570), 118 URAL_DEV(RALINK, RT2570_2), 119 URAL_DEV(RALINK, RT2570_3), 120 URAL_DEV(SIEMENS2, WL54G), 121 URAL_DEV(SMC, 2862WG), 122 URAL_DEV(SPHAIRON, UB801R), 123 URAL_DEV(SURECOM, RT2570), 124 URAL_DEV(VTECH, RT2570), 125 URAL_DEV(ZINWELL, RT2570), 126 #undef URAL_DEV 127 }; 128 129 static usb_callback_t ural_bulk_read_callback; 130 static usb_callback_t ural_bulk_write_callback; 131 132 static usb_error_t ural_do_request(struct ural_softc *sc, 133 struct usb_device_request *req, void *data); 134 static struct ieee80211vap *ural_vap_create(struct ieee80211com *, 135 const char [IFNAMSIZ], int, enum ieee80211_opmode, 136 int, const uint8_t [IEEE80211_ADDR_LEN], 137 const uint8_t [IEEE80211_ADDR_LEN]); 138 static void ural_vap_delete(struct ieee80211vap *); 139 static void ural_tx_free(struct ural_tx_data *, int); 140 static void ural_setup_tx_list(struct ural_softc *); 141 static void ural_unsetup_tx_list(struct ural_softc *); 142 static int ural_newstate(struct ieee80211vap *, 143 enum ieee80211_state, int); 144 static void ural_setup_tx_desc(struct ural_softc *, 145 struct ural_tx_desc *, uint32_t, int, int); 146 static int ural_tx_bcn(struct ural_softc *, struct mbuf *, 147 struct ieee80211_node *); 148 static int ural_tx_mgt(struct ural_softc *, struct mbuf *, 149 struct ieee80211_node *); 150 static int ural_tx_data(struct ural_softc *, struct mbuf *, 151 struct ieee80211_node *); 152 static int ural_transmit(struct ieee80211com *, struct mbuf *); 153 static void ural_start(struct ural_softc *); 154 static void ural_parent(struct ieee80211com *); 155 static void ural_set_testmode(struct ural_softc *); 156 static void ural_eeprom_read(struct ural_softc *, uint16_t, void *, 157 int); 158 static uint16_t ural_read(struct ural_softc *, uint16_t); 159 static void ural_read_multi(struct ural_softc *, uint16_t, void *, 160 int); 161 static void ural_write(struct ural_softc *, uint16_t, uint16_t); 162 static void ural_write_multi(struct ural_softc *, uint16_t, void *, 163 int) __unused; 164 static void ural_bbp_write(struct ural_softc *, uint8_t, uint8_t); 165 static uint8_t ural_bbp_read(struct ural_softc *, uint8_t); 166 static void ural_rf_write(struct ural_softc *, uint8_t, uint32_t); 167 static void ural_scan_start(struct ieee80211com *); 168 static void ural_scan_end(struct ieee80211com *); 169 static void ural_getradiocaps(struct ieee80211com *, int, int *, 170 struct ieee80211_channel[]); 171 static void ural_set_channel(struct ieee80211com *); 172 static void ural_set_chan(struct ural_softc *, 173 struct ieee80211_channel *); 174 static void ural_disable_rf_tune(struct ural_softc *); 175 static void ural_enable_tsf_sync(struct ural_softc *); 176 static void ural_enable_tsf(struct ural_softc *); 177 static void ural_update_slot(struct ural_softc *); 178 static void ural_set_txpreamble(struct ural_softc *); 179 static void ural_set_basicrates(struct ural_softc *, 180 const struct ieee80211_channel *); 181 static void ural_set_bssid(struct ural_softc *, const uint8_t *); 182 static void ural_set_macaddr(struct ural_softc *, const uint8_t *); 183 static void ural_update_promisc(struct ieee80211com *); 184 static void ural_setpromisc(struct ural_softc *); 185 static const char *ural_get_rf(int); 186 static void ural_read_eeprom(struct ural_softc *); 187 static int ural_bbp_init(struct ural_softc *); 188 static void ural_set_txantenna(struct ural_softc *, int); 189 static void ural_set_rxantenna(struct ural_softc *, int); 190 static void ural_init(struct ural_softc *); 191 static void ural_stop(struct ural_softc *); 192 static int ural_raw_xmit(struct ieee80211_node *, struct mbuf *, 193 const struct ieee80211_bpf_params *); 194 static void ural_ratectl_start(struct ural_softc *, 195 struct ieee80211_node *); 196 static void ural_ratectl_timeout(void *); 197 static void ural_ratectl_task(void *, int); 198 static int ural_pause(struct ural_softc *sc, int timeout); 199 200 /* 201 * Default values for MAC registers; values taken from the reference driver. 202 */ 203 static const struct { 204 uint16_t reg; 205 uint16_t val; 206 } ural_def_mac[] = { 207 { RAL_TXRX_CSR5, 0x8c8d }, 208 { RAL_TXRX_CSR6, 0x8b8a }, 209 { RAL_TXRX_CSR7, 0x8687 }, 210 { RAL_TXRX_CSR8, 0x0085 }, 211 { RAL_MAC_CSR13, 0x1111 }, 212 { RAL_MAC_CSR14, 0x1e11 }, 213 { RAL_TXRX_CSR21, 0xe78f }, 214 { RAL_MAC_CSR9, 0xff1d }, 215 { RAL_MAC_CSR11, 0x0002 }, 216 { RAL_MAC_CSR22, 0x0053 }, 217 { RAL_MAC_CSR15, 0x0000 }, 218 { RAL_MAC_CSR8, RAL_FRAME_SIZE }, 219 { RAL_TXRX_CSR19, 0x0000 }, 220 { RAL_TXRX_CSR18, 0x005a }, 221 { RAL_PHY_CSR2, 0x0000 }, 222 { RAL_TXRX_CSR0, 0x1ec0 }, 223 { RAL_PHY_CSR4, 0x000f } 224 }; 225 226 /* 227 * Default values for BBP registers; values taken from the reference driver. 228 */ 229 static const struct { 230 uint8_t reg; 231 uint8_t val; 232 } ural_def_bbp[] = { 233 { 3, 0x02 }, 234 { 4, 0x19 }, 235 { 14, 0x1c }, 236 { 15, 0x30 }, 237 { 16, 0xac }, 238 { 17, 0x48 }, 239 { 18, 0x18 }, 240 { 19, 0xff }, 241 { 20, 0x1e }, 242 { 21, 0x08 }, 243 { 22, 0x08 }, 244 { 23, 0x08 }, 245 { 24, 0x80 }, 246 { 25, 0x50 }, 247 { 26, 0x08 }, 248 { 27, 0x23 }, 249 { 30, 0x10 }, 250 { 31, 0x2b }, 251 { 32, 0xb9 }, 252 { 34, 0x12 }, 253 { 35, 0x50 }, 254 { 39, 0xc4 }, 255 { 40, 0x02 }, 256 { 41, 0x60 }, 257 { 53, 0x10 }, 258 { 54, 0x18 }, 259 { 56, 0x08 }, 260 { 57, 0x10 }, 261 { 58, 0x08 }, 262 { 61, 0x60 }, 263 { 62, 0x10 }, 264 { 75, 0xff } 265 }; 266 267 /* 268 * Default values for RF register R2 indexed by channel numbers. 269 */ 270 static const uint32_t ural_rf2522_r2[] = { 271 0x307f6, 0x307fb, 0x30800, 0x30805, 0x3080a, 0x3080f, 0x30814, 272 0x30819, 0x3081e, 0x30823, 0x30828, 0x3082d, 0x30832, 0x3083e 273 }; 274 275 static const uint32_t ural_rf2523_r2[] = { 276 0x00327, 0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d, 277 0x0032e, 0x0032f, 0x00340, 0x00341, 0x00342, 0x00343, 0x00346 278 }; 279 280 static const uint32_t ural_rf2524_r2[] = { 281 0x00327, 0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d, 282 0x0032e, 0x0032f, 0x00340, 0x00341, 0x00342, 0x00343, 0x00346 283 }; 284 285 static const uint32_t ural_rf2525_r2[] = { 286 0x20327, 0x20328, 0x20329, 0x2032a, 0x2032b, 0x2032c, 0x2032d, 287 0x2032e, 0x2032f, 0x20340, 0x20341, 0x20342, 0x20343, 0x20346 288 }; 289 290 static const uint32_t ural_rf2525_hi_r2[] = { 291 0x2032f, 0x20340, 0x20341, 0x20342, 0x20343, 0x20344, 0x20345, 292 0x20346, 0x20347, 0x20348, 0x20349, 0x2034a, 0x2034b, 0x2034e 293 }; 294 295 static const uint32_t ural_rf2525e_r2[] = { 296 0x2044d, 0x2044e, 0x2044f, 0x20460, 0x20461, 0x20462, 0x20463, 297 0x20464, 0x20465, 0x20466, 0x20467, 0x20468, 0x20469, 0x2046b 298 }; 299 300 static const uint32_t ural_rf2526_hi_r2[] = { 301 0x0022a, 0x0022b, 0x0022b, 0x0022c, 0x0022c, 0x0022d, 0x0022d, 302 0x0022e, 0x0022e, 0x0022f, 0x0022d, 0x00240, 0x00240, 0x00241 303 }; 304 305 static const uint32_t ural_rf2526_r2[] = { 306 0x00226, 0x00227, 0x00227, 0x00228, 0x00228, 0x00229, 0x00229, 307 0x0022a, 0x0022a, 0x0022b, 0x0022b, 0x0022c, 0x0022c, 0x0022d 308 }; 309 310 /* 311 * For dual-band RF, RF registers R1 and R4 also depend on channel number; 312 * values taken from the reference driver. 313 */ 314 static const struct { 315 uint8_t chan; 316 uint32_t r1; 317 uint32_t r2; 318 uint32_t r4; 319 } ural_rf5222[] = { 320 { 1, 0x08808, 0x0044d, 0x00282 }, 321 { 2, 0x08808, 0x0044e, 0x00282 }, 322 { 3, 0x08808, 0x0044f, 0x00282 }, 323 { 4, 0x08808, 0x00460, 0x00282 }, 324 { 5, 0x08808, 0x00461, 0x00282 }, 325 { 6, 0x08808, 0x00462, 0x00282 }, 326 { 7, 0x08808, 0x00463, 0x00282 }, 327 { 8, 0x08808, 0x00464, 0x00282 }, 328 { 9, 0x08808, 0x00465, 0x00282 }, 329 { 10, 0x08808, 0x00466, 0x00282 }, 330 { 11, 0x08808, 0x00467, 0x00282 }, 331 { 12, 0x08808, 0x00468, 0x00282 }, 332 { 13, 0x08808, 0x00469, 0x00282 }, 333 { 14, 0x08808, 0x0046b, 0x00286 }, 334 335 { 36, 0x08804, 0x06225, 0x00287 }, 336 { 40, 0x08804, 0x06226, 0x00287 }, 337 { 44, 0x08804, 0x06227, 0x00287 }, 338 { 48, 0x08804, 0x06228, 0x00287 }, 339 { 52, 0x08804, 0x06229, 0x00287 }, 340 { 56, 0x08804, 0x0622a, 0x00287 }, 341 { 60, 0x08804, 0x0622b, 0x00287 }, 342 { 64, 0x08804, 0x0622c, 0x00287 }, 343 344 { 100, 0x08804, 0x02200, 0x00283 }, 345 { 104, 0x08804, 0x02201, 0x00283 }, 346 { 108, 0x08804, 0x02202, 0x00283 }, 347 { 112, 0x08804, 0x02203, 0x00283 }, 348 { 116, 0x08804, 0x02204, 0x00283 }, 349 { 120, 0x08804, 0x02205, 0x00283 }, 350 { 124, 0x08804, 0x02206, 0x00283 }, 351 { 128, 0x08804, 0x02207, 0x00283 }, 352 { 132, 0x08804, 0x02208, 0x00283 }, 353 { 136, 0x08804, 0x02209, 0x00283 }, 354 { 140, 0x08804, 0x0220a, 0x00283 }, 355 356 { 149, 0x08808, 0x02429, 0x00281 }, 357 { 153, 0x08808, 0x0242b, 0x00281 }, 358 { 157, 0x08808, 0x0242d, 0x00281 }, 359 { 161, 0x08808, 0x0242f, 0x00281 } 360 }; 361 362 static const uint8_t ural_chan_2ghz[] = 363 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }; 364 365 static const uint8_t ural_chan_5ghz[] = 366 { 36, 40, 44, 48, 52, 56, 60, 64, 367 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 368 149, 153, 157, 161 }; 369 370 static const struct usb_config ural_config[URAL_N_TRANSFER] = { 371 [URAL_BULK_WR] = { 372 .type = UE_BULK, 373 .endpoint = UE_ADDR_ANY, 374 .direction = UE_DIR_OUT, 375 .bufsize = (RAL_FRAME_SIZE + RAL_TX_DESC_SIZE + 4), 376 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 377 .callback = ural_bulk_write_callback, 378 .timeout = 5000, /* ms */ 379 }, 380 [URAL_BULK_RD] = { 381 .type = UE_BULK, 382 .endpoint = UE_ADDR_ANY, 383 .direction = UE_DIR_IN, 384 .bufsize = (RAL_FRAME_SIZE + RAL_RX_DESC_SIZE), 385 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 386 .callback = ural_bulk_read_callback, 387 }, 388 }; 389 390 static device_probe_t ural_match; 391 static device_attach_t ural_attach; 392 static device_detach_t ural_detach; 393 394 static device_method_t ural_methods[] = { 395 /* Device interface */ 396 DEVMETHOD(device_probe, ural_match), 397 DEVMETHOD(device_attach, ural_attach), 398 DEVMETHOD(device_detach, ural_detach), 399 DEVMETHOD_END 400 }; 401 402 static driver_t ural_driver = { 403 .name = "ural", 404 .methods = ural_methods, 405 .size = sizeof(struct ural_softc), 406 }; 407 408 static devclass_t ural_devclass; 409 410 DRIVER_MODULE(ural, uhub, ural_driver, ural_devclass, NULL, 0); 411 MODULE_DEPEND(ural, usb, 1, 1, 1); 412 MODULE_DEPEND(ural, wlan, 1, 1, 1); 413 MODULE_VERSION(ural, 1); 414 USB_PNP_HOST_INFO(ural_devs); 415 416 static int 417 ural_match(device_t self) 418 { 419 struct usb_attach_arg *uaa = device_get_ivars(self); 420 421 if (uaa->usb_mode != USB_MODE_HOST) 422 return (ENXIO); 423 if (uaa->info.bConfigIndex != 0) 424 return (ENXIO); 425 if (uaa->info.bIfaceIndex != RAL_IFACE_INDEX) 426 return (ENXIO); 427 428 return (usbd_lookup_id_by_uaa(ural_devs, sizeof(ural_devs), uaa)); 429 } 430 431 static int 432 ural_attach(device_t self) 433 { 434 struct usb_attach_arg *uaa = device_get_ivars(self); 435 struct ural_softc *sc = device_get_softc(self); 436 struct ieee80211com *ic = &sc->sc_ic; 437 uint8_t iface_index; 438 int error; 439 440 device_set_usb_desc(self); 441 sc->sc_udev = uaa->device; 442 sc->sc_dev = self; 443 444 mtx_init(&sc->sc_mtx, device_get_nameunit(self), 445 MTX_NETWORK_LOCK, MTX_DEF); 446 mbufq_init(&sc->sc_snd, ifqmaxlen); 447 448 iface_index = RAL_IFACE_INDEX; 449 error = usbd_transfer_setup(uaa->device, 450 &iface_index, sc->sc_xfer, ural_config, 451 URAL_N_TRANSFER, sc, &sc->sc_mtx); 452 if (error) { 453 device_printf(self, "could not allocate USB transfers, " 454 "err=%s\n", usbd_errstr(error)); 455 goto detach; 456 } 457 458 RAL_LOCK(sc); 459 /* retrieve RT2570 rev. no */ 460 sc->asic_rev = ural_read(sc, RAL_MAC_CSR0); 461 462 /* retrieve MAC address and various other things from EEPROM */ 463 ural_read_eeprom(sc); 464 RAL_UNLOCK(sc); 465 466 device_printf(self, "MAC/BBP RT2570 (rev 0x%02x), RF %s\n", 467 sc->asic_rev, ural_get_rf(sc->rf_rev)); 468 469 ic->ic_softc = sc; 470 ic->ic_name = device_get_nameunit(self); 471 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 472 473 /* set device capabilities */ 474 ic->ic_caps = 475 IEEE80211_C_STA /* station mode supported */ 476 | IEEE80211_C_IBSS /* IBSS mode supported */ 477 | IEEE80211_C_MONITOR /* monitor mode supported */ 478 | IEEE80211_C_HOSTAP /* HostAp mode supported */ 479 | IEEE80211_C_TXPMGT /* tx power management */ 480 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 481 | IEEE80211_C_SHSLOT /* short slot time supported */ 482 | IEEE80211_C_BGSCAN /* bg scanning supported */ 483 | IEEE80211_C_WPA /* 802.11i */ 484 ; 485 486 ural_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, 487 ic->ic_channels); 488 489 ieee80211_ifattach(ic); 490 ic->ic_update_promisc = ural_update_promisc; 491 ic->ic_raw_xmit = ural_raw_xmit; 492 ic->ic_scan_start = ural_scan_start; 493 ic->ic_scan_end = ural_scan_end; 494 ic->ic_getradiocaps = ural_getradiocaps; 495 ic->ic_set_channel = ural_set_channel; 496 ic->ic_parent = ural_parent; 497 ic->ic_transmit = ural_transmit; 498 ic->ic_vap_create = ural_vap_create; 499 ic->ic_vap_delete = ural_vap_delete; 500 501 ieee80211_radiotap_attach(ic, 502 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 503 RAL_TX_RADIOTAP_PRESENT, 504 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 505 RAL_RX_RADIOTAP_PRESENT); 506 507 if (bootverbose) 508 ieee80211_announce(ic); 509 510 return (0); 511 512 detach: 513 ural_detach(self); 514 return (ENXIO); /* failure */ 515 } 516 517 static int 518 ural_detach(device_t self) 519 { 520 struct ural_softc *sc = device_get_softc(self); 521 struct ieee80211com *ic = &sc->sc_ic; 522 523 /* prevent further ioctls */ 524 RAL_LOCK(sc); 525 sc->sc_detached = 1; 526 RAL_UNLOCK(sc); 527 528 /* stop all USB transfers */ 529 usbd_transfer_unsetup(sc->sc_xfer, URAL_N_TRANSFER); 530 531 /* free TX list, if any */ 532 RAL_LOCK(sc); 533 ural_unsetup_tx_list(sc); 534 RAL_UNLOCK(sc); 535 536 if (ic->ic_softc == sc) 537 ieee80211_ifdetach(ic); 538 mbufq_drain(&sc->sc_snd); 539 mtx_destroy(&sc->sc_mtx); 540 541 return (0); 542 } 543 544 static usb_error_t 545 ural_do_request(struct ural_softc *sc, 546 struct usb_device_request *req, void *data) 547 { 548 usb_error_t err; 549 int ntries = 10; 550 551 while (ntries--) { 552 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 553 req, data, 0, NULL, 250 /* ms */); 554 if (err == 0) 555 break; 556 557 DPRINTFN(1, "Control request failed, %s (retrying)\n", 558 usbd_errstr(err)); 559 if (ural_pause(sc, hz / 100)) 560 break; 561 } 562 return (err); 563 } 564 565 static struct ieee80211vap * 566 ural_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 567 enum ieee80211_opmode opmode, int flags, 568 const uint8_t bssid[IEEE80211_ADDR_LEN], 569 const uint8_t mac[IEEE80211_ADDR_LEN]) 570 { 571 struct ural_softc *sc = ic->ic_softc; 572 struct ural_vap *uvp; 573 struct ieee80211vap *vap; 574 575 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 576 return NULL; 577 uvp = malloc(sizeof(struct ural_vap), M_80211_VAP, M_WAITOK | M_ZERO); 578 vap = &uvp->vap; 579 /* enable s/w bmiss handling for sta mode */ 580 581 if (ieee80211_vap_setup(ic, vap, name, unit, opmode, 582 flags | IEEE80211_CLONE_NOBEACONS, bssid) != 0) { 583 /* out of memory */ 584 free(uvp, M_80211_VAP); 585 return (NULL); 586 } 587 588 /* override state transition machine */ 589 uvp->newstate = vap->iv_newstate; 590 vap->iv_newstate = ural_newstate; 591 592 usb_callout_init_mtx(&uvp->ratectl_ch, &sc->sc_mtx, 0); 593 TASK_INIT(&uvp->ratectl_task, 0, ural_ratectl_task, uvp); 594 ieee80211_ratectl_init(vap); 595 ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */); 596 597 /* complete setup */ 598 ieee80211_vap_attach(vap, ieee80211_media_change, 599 ieee80211_media_status, mac); 600 ic->ic_opmode = opmode; 601 return vap; 602 } 603 604 static void 605 ural_vap_delete(struct ieee80211vap *vap) 606 { 607 struct ural_vap *uvp = URAL_VAP(vap); 608 struct ieee80211com *ic = vap->iv_ic; 609 610 usb_callout_drain(&uvp->ratectl_ch); 611 ieee80211_draintask(ic, &uvp->ratectl_task); 612 ieee80211_ratectl_deinit(vap); 613 ieee80211_vap_detach(vap); 614 free(uvp, M_80211_VAP); 615 } 616 617 static void 618 ural_tx_free(struct ural_tx_data *data, int txerr) 619 { 620 struct ural_softc *sc = data->sc; 621 622 if (data->m != NULL) { 623 ieee80211_tx_complete(data->ni, data->m, txerr); 624 data->m = NULL; 625 data->ni = NULL; 626 } 627 STAILQ_INSERT_TAIL(&sc->tx_free, data, next); 628 sc->tx_nfree++; 629 } 630 631 static void 632 ural_setup_tx_list(struct ural_softc *sc) 633 { 634 struct ural_tx_data *data; 635 int i; 636 637 sc->tx_nfree = 0; 638 STAILQ_INIT(&sc->tx_q); 639 STAILQ_INIT(&sc->tx_free); 640 641 for (i = 0; i < RAL_TX_LIST_COUNT; i++) { 642 data = &sc->tx_data[i]; 643 644 data->sc = sc; 645 STAILQ_INSERT_TAIL(&sc->tx_free, data, next); 646 sc->tx_nfree++; 647 } 648 } 649 650 static void 651 ural_unsetup_tx_list(struct ural_softc *sc) 652 { 653 struct ural_tx_data *data; 654 int i; 655 656 /* make sure any subsequent use of the queues will fail */ 657 sc->tx_nfree = 0; 658 STAILQ_INIT(&sc->tx_q); 659 STAILQ_INIT(&sc->tx_free); 660 661 /* free up all node references and mbufs */ 662 for (i = 0; i < RAL_TX_LIST_COUNT; i++) { 663 data = &sc->tx_data[i]; 664 665 if (data->m != NULL) { 666 m_freem(data->m); 667 data->m = NULL; 668 } 669 if (data->ni != NULL) { 670 ieee80211_free_node(data->ni); 671 data->ni = NULL; 672 } 673 } 674 } 675 676 static int 677 ural_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 678 { 679 struct ural_vap *uvp = URAL_VAP(vap); 680 struct ieee80211com *ic = vap->iv_ic; 681 struct ural_softc *sc = ic->ic_softc; 682 const struct ieee80211_txparam *tp; 683 struct ieee80211_node *ni; 684 struct mbuf *m; 685 686 DPRINTF("%s -> %s\n", 687 ieee80211_state_name[vap->iv_state], 688 ieee80211_state_name[nstate]); 689 690 IEEE80211_UNLOCK(ic); 691 RAL_LOCK(sc); 692 usb_callout_stop(&uvp->ratectl_ch); 693 694 switch (nstate) { 695 case IEEE80211_S_INIT: 696 if (vap->iv_state == IEEE80211_S_RUN) { 697 /* abort TSF synchronization */ 698 ural_write(sc, RAL_TXRX_CSR19, 0); 699 700 /* force tx led to stop blinking */ 701 ural_write(sc, RAL_MAC_CSR20, 0); 702 } 703 break; 704 705 case IEEE80211_S_RUN: 706 ni = ieee80211_ref_node(vap->iv_bss); 707 708 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 709 if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) 710 goto fail; 711 712 ural_update_slot(sc); 713 ural_set_txpreamble(sc); 714 ural_set_basicrates(sc, ic->ic_bsschan); 715 IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid); 716 ural_set_bssid(sc, sc->sc_bssid); 717 } 718 719 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 720 vap->iv_opmode == IEEE80211_M_IBSS) { 721 m = ieee80211_beacon_alloc(ni); 722 if (m == NULL) { 723 device_printf(sc->sc_dev, 724 "could not allocate beacon\n"); 725 goto fail; 726 } 727 ieee80211_ref_node(ni); 728 if (ural_tx_bcn(sc, m, ni) != 0) { 729 device_printf(sc->sc_dev, 730 "could not send beacon\n"); 731 goto fail; 732 } 733 } 734 735 /* make tx led blink on tx (controlled by ASIC) */ 736 ural_write(sc, RAL_MAC_CSR20, 1); 737 738 if (vap->iv_opmode != IEEE80211_M_MONITOR) 739 ural_enable_tsf_sync(sc); 740 else 741 ural_enable_tsf(sc); 742 743 /* enable automatic rate adaptation */ 744 /* XXX should use ic_bsschan but not valid until after newstate call below */ 745 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; 746 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) 747 ural_ratectl_start(sc, ni); 748 ieee80211_free_node(ni); 749 break; 750 751 default: 752 break; 753 } 754 RAL_UNLOCK(sc); 755 IEEE80211_LOCK(ic); 756 return (uvp->newstate(vap, nstate, arg)); 757 758 fail: 759 RAL_UNLOCK(sc); 760 IEEE80211_LOCK(ic); 761 ieee80211_free_node(ni); 762 return (-1); 763 } 764 765 766 static void 767 ural_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 768 { 769 struct ural_softc *sc = usbd_xfer_softc(xfer); 770 struct ieee80211vap *vap; 771 struct ural_tx_data *data; 772 struct mbuf *m; 773 struct usb_page_cache *pc; 774 int len; 775 776 usbd_xfer_status(xfer, &len, NULL, NULL, NULL); 777 778 switch (USB_GET_STATE(xfer)) { 779 case USB_ST_TRANSFERRED: 780 DPRINTFN(11, "transfer complete, %d bytes\n", len); 781 782 /* free resources */ 783 data = usbd_xfer_get_priv(xfer); 784 ural_tx_free(data, 0); 785 usbd_xfer_set_priv(xfer, NULL); 786 787 /* FALLTHROUGH */ 788 case USB_ST_SETUP: 789 tr_setup: 790 data = STAILQ_FIRST(&sc->tx_q); 791 if (data) { 792 STAILQ_REMOVE_HEAD(&sc->tx_q, next); 793 m = data->m; 794 795 if (m->m_pkthdr.len > (int)(RAL_FRAME_SIZE + RAL_TX_DESC_SIZE)) { 796 DPRINTFN(0, "data overflow, %u bytes\n", 797 m->m_pkthdr.len); 798 m->m_pkthdr.len = (RAL_FRAME_SIZE + RAL_TX_DESC_SIZE); 799 } 800 pc = usbd_xfer_get_frame(xfer, 0); 801 usbd_copy_in(pc, 0, &data->desc, RAL_TX_DESC_SIZE); 802 usbd_m_copy_in(pc, RAL_TX_DESC_SIZE, m, 0, 803 m->m_pkthdr.len); 804 805 vap = data->ni->ni_vap; 806 if (ieee80211_radiotap_active_vap(vap)) { 807 struct ural_tx_radiotap_header *tap = &sc->sc_txtap; 808 809 tap->wt_flags = 0; 810 tap->wt_rate = data->rate; 811 tap->wt_antenna = sc->tx_ant; 812 813 ieee80211_radiotap_tx(vap, m); 814 } 815 816 /* xfer length needs to be a multiple of two! */ 817 len = (RAL_TX_DESC_SIZE + m->m_pkthdr.len + 1) & ~1; 818 if ((len % 64) == 0) 819 len += 2; 820 821 DPRINTFN(11, "sending frame len=%u xferlen=%u\n", 822 m->m_pkthdr.len, len); 823 824 usbd_xfer_set_frame_len(xfer, 0, len); 825 usbd_xfer_set_priv(xfer, data); 826 827 usbd_transfer_submit(xfer); 828 } 829 ural_start(sc); 830 break; 831 832 default: /* Error */ 833 DPRINTFN(11, "transfer error, %s\n", 834 usbd_errstr(error)); 835 836 data = usbd_xfer_get_priv(xfer); 837 if (data != NULL) { 838 ural_tx_free(data, error); 839 usbd_xfer_set_priv(xfer, NULL); 840 } 841 842 if (error == USB_ERR_STALLED) { 843 /* try to clear stall first */ 844 usbd_xfer_set_stall(xfer); 845 goto tr_setup; 846 } 847 if (error == USB_ERR_TIMEOUT) 848 device_printf(sc->sc_dev, "device timeout\n"); 849 break; 850 } 851 } 852 853 static void 854 ural_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 855 { 856 struct ural_softc *sc = usbd_xfer_softc(xfer); 857 struct ieee80211com *ic = &sc->sc_ic; 858 struct ieee80211_node *ni; 859 struct mbuf *m = NULL; 860 struct usb_page_cache *pc; 861 uint32_t flags; 862 int8_t rssi = 0, nf = 0; 863 int len; 864 865 usbd_xfer_status(xfer, &len, NULL, NULL, NULL); 866 867 switch (USB_GET_STATE(xfer)) { 868 case USB_ST_TRANSFERRED: 869 870 DPRINTFN(15, "rx done, actlen=%d\n", len); 871 872 if (len < (int)(RAL_RX_DESC_SIZE + IEEE80211_MIN_LEN)) { 873 DPRINTF("%s: xfer too short %d\n", 874 device_get_nameunit(sc->sc_dev), len); 875 counter_u64_add(ic->ic_ierrors, 1); 876 goto tr_setup; 877 } 878 879 len -= RAL_RX_DESC_SIZE; 880 /* rx descriptor is located at the end */ 881 pc = usbd_xfer_get_frame(xfer, 0); 882 usbd_copy_out(pc, len, &sc->sc_rx_desc, RAL_RX_DESC_SIZE); 883 884 rssi = URAL_RSSI(sc->sc_rx_desc.rssi); 885 nf = RAL_NOISE_FLOOR; 886 flags = le32toh(sc->sc_rx_desc.flags); 887 if (flags & (RAL_RX_PHY_ERROR | RAL_RX_CRC_ERROR)) { 888 /* 889 * This should not happen since we did not 890 * request to receive those frames when we 891 * filled RAL_TXRX_CSR2: 892 */ 893 DPRINTFN(5, "PHY or CRC error\n"); 894 counter_u64_add(ic->ic_ierrors, 1); 895 goto tr_setup; 896 } 897 898 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 899 if (m == NULL) { 900 DPRINTF("could not allocate mbuf\n"); 901 counter_u64_add(ic->ic_ierrors, 1); 902 goto tr_setup; 903 } 904 usbd_copy_out(pc, 0, mtod(m, uint8_t *), len); 905 906 /* finalize mbuf */ 907 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff; 908 909 if (ieee80211_radiotap_active(ic)) { 910 struct ural_rx_radiotap_header *tap = &sc->sc_rxtap; 911 912 /* XXX set once */ 913 tap->wr_flags = 0; 914 tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate, 915 (flags & RAL_RX_OFDM) ? 916 IEEE80211_T_OFDM : IEEE80211_T_CCK); 917 tap->wr_antenna = sc->rx_ant; 918 tap->wr_antsignal = nf + rssi; 919 tap->wr_antnoise = nf; 920 } 921 /* Strip trailing 802.11 MAC FCS. */ 922 m_adj(m, -IEEE80211_CRC_LEN); 923 924 /* FALLTHROUGH */ 925 case USB_ST_SETUP: 926 tr_setup: 927 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 928 usbd_transfer_submit(xfer); 929 930 /* 931 * At the end of a USB callback it is always safe to unlock 932 * the private mutex of a device! That is why we do the 933 * "ieee80211_input" here, and not some lines up! 934 */ 935 RAL_UNLOCK(sc); 936 if (m) { 937 ni = ieee80211_find_rxnode(ic, 938 mtod(m, struct ieee80211_frame_min *)); 939 if (ni != NULL) { 940 (void) ieee80211_input(ni, m, rssi, nf); 941 ieee80211_free_node(ni); 942 } else 943 (void) ieee80211_input_all(ic, m, rssi, nf); 944 } 945 RAL_LOCK(sc); 946 ural_start(sc); 947 return; 948 949 default: /* Error */ 950 if (error != USB_ERR_CANCELLED) { 951 /* try to clear stall first */ 952 usbd_xfer_set_stall(xfer); 953 goto tr_setup; 954 } 955 return; 956 } 957 } 958 959 static uint8_t 960 ural_plcp_signal(int rate) 961 { 962 switch (rate) { 963 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 964 case 12: return 0xb; 965 case 18: return 0xf; 966 case 24: return 0xa; 967 case 36: return 0xe; 968 case 48: return 0x9; 969 case 72: return 0xd; 970 case 96: return 0x8; 971 case 108: return 0xc; 972 973 /* CCK rates (NB: not IEEE std, device-specific) */ 974 case 2: return 0x0; 975 case 4: return 0x1; 976 case 11: return 0x2; 977 case 22: return 0x3; 978 } 979 return 0xff; /* XXX unsupported/unknown rate */ 980 } 981 982 static void 983 ural_setup_tx_desc(struct ural_softc *sc, struct ural_tx_desc *desc, 984 uint32_t flags, int len, int rate) 985 { 986 struct ieee80211com *ic = &sc->sc_ic; 987 uint16_t plcp_length; 988 int remainder; 989 990 desc->flags = htole32(flags); 991 desc->flags |= htole32(RAL_TX_NEWSEQ); 992 desc->flags |= htole32(len << 16); 993 994 desc->wme = htole16(RAL_AIFSN(2) | RAL_LOGCWMIN(3) | RAL_LOGCWMAX(5)); 995 desc->wme |= htole16(RAL_IVOFFSET(sizeof (struct ieee80211_frame))); 996 997 /* setup PLCP fields */ 998 desc->plcp_signal = ural_plcp_signal(rate); 999 desc->plcp_service = 4; 1000 1001 len += IEEE80211_CRC_LEN; 1002 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1003 desc->flags |= htole32(RAL_TX_OFDM); 1004 1005 plcp_length = len & 0xfff; 1006 desc->plcp_length_hi = plcp_length >> 6; 1007 desc->plcp_length_lo = plcp_length & 0x3f; 1008 } else { 1009 if (rate == 0) 1010 rate = 2; /* avoid division by zero */ 1011 plcp_length = howmany(16 * len, rate); 1012 if (rate == 22) { 1013 remainder = (16 * len) % 22; 1014 if (remainder != 0 && remainder < 7) 1015 desc->plcp_service |= RAL_PLCP_LENGEXT; 1016 } 1017 desc->plcp_length_hi = plcp_length >> 8; 1018 desc->plcp_length_lo = plcp_length & 0xff; 1019 1020 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1021 desc->plcp_signal |= 0x08; 1022 } 1023 1024 desc->iv = 0; 1025 desc->eiv = 0; 1026 } 1027 1028 #define RAL_TX_TIMEOUT 5000 1029 1030 static int 1031 ural_tx_bcn(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1032 { 1033 struct ieee80211vap *vap = ni->ni_vap; 1034 struct ieee80211com *ic = ni->ni_ic; 1035 const struct ieee80211_txparam *tp; 1036 struct ural_tx_data *data; 1037 1038 if (sc->tx_nfree == 0) { 1039 m_freem(m0); 1040 ieee80211_free_node(ni); 1041 return (EIO); 1042 } 1043 if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) { 1044 m_freem(m0); 1045 ieee80211_free_node(ni); 1046 return (ENXIO); 1047 } 1048 data = STAILQ_FIRST(&sc->tx_free); 1049 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1050 sc->tx_nfree--; 1051 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)]; 1052 1053 data->m = m0; 1054 data->ni = ni; 1055 data->rate = tp->mgmtrate; 1056 1057 ural_setup_tx_desc(sc, &data->desc, 1058 RAL_TX_IFS_NEWBACKOFF | RAL_TX_TIMESTAMP, m0->m_pkthdr.len, 1059 tp->mgmtrate); 1060 1061 DPRINTFN(10, "sending beacon frame len=%u rate=%u\n", 1062 m0->m_pkthdr.len, tp->mgmtrate); 1063 1064 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1065 usbd_transfer_start(sc->sc_xfer[URAL_BULK_WR]); 1066 1067 return (0); 1068 } 1069 1070 static int 1071 ural_tx_mgt(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1072 { 1073 const struct ieee80211_txparam *tp = ni->ni_txparms; 1074 struct ieee80211com *ic = ni->ni_ic; 1075 struct ural_tx_data *data; 1076 struct ieee80211_frame *wh; 1077 struct ieee80211_key *k; 1078 uint32_t flags; 1079 uint16_t dur; 1080 1081 RAL_LOCK_ASSERT(sc, MA_OWNED); 1082 1083 data = STAILQ_FIRST(&sc->tx_free); 1084 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1085 sc->tx_nfree--; 1086 1087 wh = mtod(m0, struct ieee80211_frame *); 1088 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1089 k = ieee80211_crypto_encap(ni, m0); 1090 if (k == NULL) { 1091 m_freem(m0); 1092 return ENOBUFS; 1093 } 1094 wh = mtod(m0, struct ieee80211_frame *); 1095 } 1096 1097 data->m = m0; 1098 data->ni = ni; 1099 data->rate = tp->mgmtrate; 1100 1101 flags = 0; 1102 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1103 flags |= RAL_TX_ACK; 1104 1105 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate, 1106 ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1107 USETW(wh->i_dur, dur); 1108 1109 /* tell hardware to add timestamp for probe responses */ 1110 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1111 IEEE80211_FC0_TYPE_MGT && 1112 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1113 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1114 flags |= RAL_TX_TIMESTAMP; 1115 } 1116 1117 ural_setup_tx_desc(sc, &data->desc, flags, m0->m_pkthdr.len, tp->mgmtrate); 1118 1119 DPRINTFN(10, "sending mgt frame len=%u rate=%u\n", 1120 m0->m_pkthdr.len, tp->mgmtrate); 1121 1122 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1123 usbd_transfer_start(sc->sc_xfer[URAL_BULK_WR]); 1124 1125 return 0; 1126 } 1127 1128 static int 1129 ural_sendprot(struct ural_softc *sc, 1130 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1131 { 1132 struct ieee80211com *ic = ni->ni_ic; 1133 const struct ieee80211_frame *wh; 1134 struct ural_tx_data *data; 1135 struct mbuf *mprot; 1136 int protrate, ackrate, pktlen, flags, isshort; 1137 uint16_t dur; 1138 1139 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1140 ("protection %d", prot)); 1141 1142 wh = mtod(m, const struct ieee80211_frame *); 1143 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1144 1145 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1146 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1147 1148 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1149 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1150 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1151 flags = RAL_TX_RETRY(7); 1152 if (prot == IEEE80211_PROT_RTSCTS) { 1153 /* NB: CTS is the same size as an ACK */ 1154 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1155 flags |= RAL_TX_ACK; 1156 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1157 } else { 1158 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1159 } 1160 if (mprot == NULL) { 1161 /* XXX stat + msg */ 1162 return ENOBUFS; 1163 } 1164 data = STAILQ_FIRST(&sc->tx_free); 1165 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1166 sc->tx_nfree--; 1167 1168 data->m = mprot; 1169 data->ni = ieee80211_ref_node(ni); 1170 data->rate = protrate; 1171 ural_setup_tx_desc(sc, &data->desc, flags, mprot->m_pkthdr.len, protrate); 1172 1173 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1174 usbd_transfer_start(sc->sc_xfer[URAL_BULK_WR]); 1175 1176 return 0; 1177 } 1178 1179 static int 1180 ural_tx_raw(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1181 const struct ieee80211_bpf_params *params) 1182 { 1183 struct ieee80211com *ic = ni->ni_ic; 1184 struct ural_tx_data *data; 1185 uint32_t flags; 1186 int error; 1187 int rate; 1188 1189 RAL_LOCK_ASSERT(sc, MA_OWNED); 1190 KASSERT(params != NULL, ("no raw xmit params")); 1191 1192 rate = params->ibp_rate0; 1193 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1194 m_freem(m0); 1195 return EINVAL; 1196 } 1197 flags = 0; 1198 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1199 flags |= RAL_TX_ACK; 1200 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1201 error = ural_sendprot(sc, m0, ni, 1202 params->ibp_flags & IEEE80211_BPF_RTS ? 1203 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1204 rate); 1205 if (error || sc->tx_nfree == 0) { 1206 m_freem(m0); 1207 return ENOBUFS; 1208 } 1209 flags |= RAL_TX_IFS_SIFS; 1210 } 1211 1212 data = STAILQ_FIRST(&sc->tx_free); 1213 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1214 sc->tx_nfree--; 1215 1216 data->m = m0; 1217 data->ni = ni; 1218 data->rate = rate; 1219 1220 /* XXX need to setup descriptor ourself */ 1221 ural_setup_tx_desc(sc, &data->desc, flags, m0->m_pkthdr.len, rate); 1222 1223 DPRINTFN(10, "sending raw frame len=%u rate=%u\n", 1224 m0->m_pkthdr.len, rate); 1225 1226 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1227 usbd_transfer_start(sc->sc_xfer[URAL_BULK_WR]); 1228 1229 return 0; 1230 } 1231 1232 static int 1233 ural_tx_data(struct ural_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1234 { 1235 struct ieee80211vap *vap = ni->ni_vap; 1236 struct ieee80211com *ic = ni->ni_ic; 1237 struct ural_tx_data *data; 1238 struct ieee80211_frame *wh; 1239 const struct ieee80211_txparam *tp = ni->ni_txparms; 1240 struct ieee80211_key *k; 1241 uint32_t flags = 0; 1242 uint16_t dur; 1243 int error, rate; 1244 1245 RAL_LOCK_ASSERT(sc, MA_OWNED); 1246 1247 wh = mtod(m0, struct ieee80211_frame *); 1248 1249 if (m0->m_flags & M_EAPOL) 1250 rate = tp->mgmtrate; 1251 else if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1252 rate = tp->mcastrate; 1253 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 1254 rate = tp->ucastrate; 1255 else { 1256 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1257 rate = ni->ni_txrate; 1258 } 1259 1260 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1261 k = ieee80211_crypto_encap(ni, m0); 1262 if (k == NULL) { 1263 m_freem(m0); 1264 return ENOBUFS; 1265 } 1266 /* packet header may have moved, reset our local pointer */ 1267 wh = mtod(m0, struct ieee80211_frame *); 1268 } 1269 1270 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1271 int prot = IEEE80211_PROT_NONE; 1272 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1273 prot = IEEE80211_PROT_RTSCTS; 1274 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1275 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1276 prot = ic->ic_protmode; 1277 if (prot != IEEE80211_PROT_NONE) { 1278 error = ural_sendprot(sc, m0, ni, prot, rate); 1279 if (error || sc->tx_nfree == 0) { 1280 m_freem(m0); 1281 return ENOBUFS; 1282 } 1283 flags |= RAL_TX_IFS_SIFS; 1284 } 1285 } 1286 1287 data = STAILQ_FIRST(&sc->tx_free); 1288 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1289 sc->tx_nfree--; 1290 1291 data->m = m0; 1292 data->ni = ni; 1293 data->rate = rate; 1294 1295 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1296 flags |= RAL_TX_ACK; 1297 flags |= RAL_TX_RETRY(7); 1298 1299 dur = ieee80211_ack_duration(ic->ic_rt, rate, 1300 ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1301 USETW(wh->i_dur, dur); 1302 } 1303 1304 ural_setup_tx_desc(sc, &data->desc, flags, m0->m_pkthdr.len, rate); 1305 1306 DPRINTFN(10, "sending data frame len=%u rate=%u\n", 1307 m0->m_pkthdr.len, rate); 1308 1309 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1310 usbd_transfer_start(sc->sc_xfer[URAL_BULK_WR]); 1311 1312 return 0; 1313 } 1314 1315 static int 1316 ural_transmit(struct ieee80211com *ic, struct mbuf *m) 1317 { 1318 struct ural_softc *sc = ic->ic_softc; 1319 int error; 1320 1321 RAL_LOCK(sc); 1322 if (!sc->sc_running) { 1323 RAL_UNLOCK(sc); 1324 return (ENXIO); 1325 } 1326 error = mbufq_enqueue(&sc->sc_snd, m); 1327 if (error) { 1328 RAL_UNLOCK(sc); 1329 return (error); 1330 } 1331 ural_start(sc); 1332 RAL_UNLOCK(sc); 1333 1334 return (0); 1335 } 1336 1337 static void 1338 ural_start(struct ural_softc *sc) 1339 { 1340 struct ieee80211_node *ni; 1341 struct mbuf *m; 1342 1343 RAL_LOCK_ASSERT(sc, MA_OWNED); 1344 1345 if (sc->sc_running == 0) 1346 return; 1347 1348 while (sc->tx_nfree >= RAL_TX_MINFREE && 1349 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1350 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1351 if (ural_tx_data(sc, m, ni) != 0) { 1352 if_inc_counter(ni->ni_vap->iv_ifp, 1353 IFCOUNTER_OERRORS, 1); 1354 ieee80211_free_node(ni); 1355 break; 1356 } 1357 } 1358 } 1359 1360 static void 1361 ural_parent(struct ieee80211com *ic) 1362 { 1363 struct ural_softc *sc = ic->ic_softc; 1364 int startall = 0; 1365 1366 RAL_LOCK(sc); 1367 if (sc->sc_detached) { 1368 RAL_UNLOCK(sc); 1369 return; 1370 } 1371 if (ic->ic_nrunning > 0) { 1372 if (sc->sc_running == 0) { 1373 ural_init(sc); 1374 startall = 1; 1375 } else 1376 ural_setpromisc(sc); 1377 } else if (sc->sc_running) 1378 ural_stop(sc); 1379 RAL_UNLOCK(sc); 1380 if (startall) 1381 ieee80211_start_all(ic); 1382 } 1383 1384 static void 1385 ural_set_testmode(struct ural_softc *sc) 1386 { 1387 struct usb_device_request req; 1388 usb_error_t error; 1389 1390 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1391 req.bRequest = RAL_VENDOR_REQUEST; 1392 USETW(req.wValue, 4); 1393 USETW(req.wIndex, 1); 1394 USETW(req.wLength, 0); 1395 1396 error = ural_do_request(sc, &req, NULL); 1397 if (error != 0) { 1398 device_printf(sc->sc_dev, "could not set test mode: %s\n", 1399 usbd_errstr(error)); 1400 } 1401 } 1402 1403 static void 1404 ural_eeprom_read(struct ural_softc *sc, uint16_t addr, void *buf, int len) 1405 { 1406 struct usb_device_request req; 1407 usb_error_t error; 1408 1409 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1410 req.bRequest = RAL_READ_EEPROM; 1411 USETW(req.wValue, 0); 1412 USETW(req.wIndex, addr); 1413 USETW(req.wLength, len); 1414 1415 error = ural_do_request(sc, &req, buf); 1416 if (error != 0) { 1417 device_printf(sc->sc_dev, "could not read EEPROM: %s\n", 1418 usbd_errstr(error)); 1419 } 1420 } 1421 1422 static uint16_t 1423 ural_read(struct ural_softc *sc, uint16_t reg) 1424 { 1425 struct usb_device_request req; 1426 usb_error_t error; 1427 uint16_t val; 1428 1429 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1430 req.bRequest = RAL_READ_MAC; 1431 USETW(req.wValue, 0); 1432 USETW(req.wIndex, reg); 1433 USETW(req.wLength, sizeof (uint16_t)); 1434 1435 error = ural_do_request(sc, &req, &val); 1436 if (error != 0) { 1437 device_printf(sc->sc_dev, "could not read MAC register: %s\n", 1438 usbd_errstr(error)); 1439 return 0; 1440 } 1441 1442 return le16toh(val); 1443 } 1444 1445 static void 1446 ural_read_multi(struct ural_softc *sc, uint16_t reg, void *buf, int len) 1447 { 1448 struct usb_device_request req; 1449 usb_error_t error; 1450 1451 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1452 req.bRequest = RAL_READ_MULTI_MAC; 1453 USETW(req.wValue, 0); 1454 USETW(req.wIndex, reg); 1455 USETW(req.wLength, len); 1456 1457 error = ural_do_request(sc, &req, buf); 1458 if (error != 0) { 1459 device_printf(sc->sc_dev, "could not read MAC register: %s\n", 1460 usbd_errstr(error)); 1461 } 1462 } 1463 1464 static void 1465 ural_write(struct ural_softc *sc, uint16_t reg, uint16_t val) 1466 { 1467 struct usb_device_request req; 1468 usb_error_t error; 1469 1470 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1471 req.bRequest = RAL_WRITE_MAC; 1472 USETW(req.wValue, val); 1473 USETW(req.wIndex, reg); 1474 USETW(req.wLength, 0); 1475 1476 error = ural_do_request(sc, &req, NULL); 1477 if (error != 0) { 1478 device_printf(sc->sc_dev, "could not write MAC register: %s\n", 1479 usbd_errstr(error)); 1480 } 1481 } 1482 1483 static void 1484 ural_write_multi(struct ural_softc *sc, uint16_t reg, void *buf, int len) 1485 { 1486 struct usb_device_request req; 1487 usb_error_t error; 1488 1489 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1490 req.bRequest = RAL_WRITE_MULTI_MAC; 1491 USETW(req.wValue, 0); 1492 USETW(req.wIndex, reg); 1493 USETW(req.wLength, len); 1494 1495 error = ural_do_request(sc, &req, buf); 1496 if (error != 0) { 1497 device_printf(sc->sc_dev, "could not write MAC register: %s\n", 1498 usbd_errstr(error)); 1499 } 1500 } 1501 1502 static void 1503 ural_bbp_write(struct ural_softc *sc, uint8_t reg, uint8_t val) 1504 { 1505 uint16_t tmp; 1506 int ntries; 1507 1508 for (ntries = 0; ntries < 100; ntries++) { 1509 if (!(ural_read(sc, RAL_PHY_CSR8) & RAL_BBP_BUSY)) 1510 break; 1511 if (ural_pause(sc, hz / 100)) 1512 break; 1513 } 1514 if (ntries == 100) { 1515 device_printf(sc->sc_dev, "could not write to BBP\n"); 1516 return; 1517 } 1518 1519 tmp = reg << 8 | val; 1520 ural_write(sc, RAL_PHY_CSR7, tmp); 1521 } 1522 1523 static uint8_t 1524 ural_bbp_read(struct ural_softc *sc, uint8_t reg) 1525 { 1526 uint16_t val; 1527 int ntries; 1528 1529 val = RAL_BBP_WRITE | reg << 8; 1530 ural_write(sc, RAL_PHY_CSR7, val); 1531 1532 for (ntries = 0; ntries < 100; ntries++) { 1533 if (!(ural_read(sc, RAL_PHY_CSR8) & RAL_BBP_BUSY)) 1534 break; 1535 if (ural_pause(sc, hz / 100)) 1536 break; 1537 } 1538 if (ntries == 100) { 1539 device_printf(sc->sc_dev, "could not read BBP\n"); 1540 return 0; 1541 } 1542 1543 return ural_read(sc, RAL_PHY_CSR7) & 0xff; 1544 } 1545 1546 static void 1547 ural_rf_write(struct ural_softc *sc, uint8_t reg, uint32_t val) 1548 { 1549 uint32_t tmp; 1550 int ntries; 1551 1552 for (ntries = 0; ntries < 100; ntries++) { 1553 if (!(ural_read(sc, RAL_PHY_CSR10) & RAL_RF_LOBUSY)) 1554 break; 1555 if (ural_pause(sc, hz / 100)) 1556 break; 1557 } 1558 if (ntries == 100) { 1559 device_printf(sc->sc_dev, "could not write to RF\n"); 1560 return; 1561 } 1562 1563 tmp = RAL_RF_BUSY | RAL_RF_20BIT | (val & 0xfffff) << 2 | (reg & 0x3); 1564 ural_write(sc, RAL_PHY_CSR9, tmp & 0xffff); 1565 ural_write(sc, RAL_PHY_CSR10, tmp >> 16); 1566 1567 /* remember last written value in sc */ 1568 sc->rf_regs[reg] = val; 1569 1570 DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 1571 } 1572 1573 static void 1574 ural_scan_start(struct ieee80211com *ic) 1575 { 1576 struct ural_softc *sc = ic->ic_softc; 1577 1578 RAL_LOCK(sc); 1579 ural_write(sc, RAL_TXRX_CSR19, 0); 1580 ural_set_bssid(sc, ieee80211broadcastaddr); 1581 RAL_UNLOCK(sc); 1582 } 1583 1584 static void 1585 ural_scan_end(struct ieee80211com *ic) 1586 { 1587 struct ural_softc *sc = ic->ic_softc; 1588 1589 RAL_LOCK(sc); 1590 ural_enable_tsf_sync(sc); 1591 ural_set_bssid(sc, sc->sc_bssid); 1592 RAL_UNLOCK(sc); 1593 1594 } 1595 1596 static void 1597 ural_getradiocaps(struct ieee80211com *ic, 1598 int maxchans, int *nchans, struct ieee80211_channel chans[]) 1599 { 1600 struct ural_softc *sc = ic->ic_softc; 1601 uint8_t bands[IEEE80211_MODE_BYTES]; 1602 1603 memset(bands, 0, sizeof(bands)); 1604 setbit(bands, IEEE80211_MODE_11B); 1605 setbit(bands, IEEE80211_MODE_11G); 1606 ieee80211_add_channel_list_2ghz(chans, maxchans, nchans, 1607 ural_chan_2ghz, nitems(ural_chan_2ghz), bands, 0); 1608 1609 if (sc->rf_rev == RAL_RF_5222) { 1610 setbit(bands, IEEE80211_MODE_11A); 1611 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans, 1612 ural_chan_5ghz, nitems(ural_chan_5ghz), bands, 0); 1613 } 1614 } 1615 1616 static void 1617 ural_set_channel(struct ieee80211com *ic) 1618 { 1619 struct ural_softc *sc = ic->ic_softc; 1620 1621 RAL_LOCK(sc); 1622 ural_set_chan(sc, ic->ic_curchan); 1623 RAL_UNLOCK(sc); 1624 } 1625 1626 static void 1627 ural_set_chan(struct ural_softc *sc, struct ieee80211_channel *c) 1628 { 1629 struct ieee80211com *ic = &sc->sc_ic; 1630 uint8_t power, tmp; 1631 int i, chan; 1632 1633 chan = ieee80211_chan2ieee(ic, c); 1634 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1635 return; 1636 1637 if (IEEE80211_IS_CHAN_2GHZ(c)) 1638 power = min(sc->txpow[chan - 1], 31); 1639 else 1640 power = 31; 1641 1642 /* adjust txpower using ifconfig settings */ 1643 power -= (100 - ic->ic_txpowlimit) / 8; 1644 1645 DPRINTFN(2, "setting channel to %u, txpower to %u\n", chan, power); 1646 1647 switch (sc->rf_rev) { 1648 case RAL_RF_2522: 1649 ural_rf_write(sc, RAL_RF1, 0x00814); 1650 ural_rf_write(sc, RAL_RF2, ural_rf2522_r2[chan - 1]); 1651 ural_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 1652 break; 1653 1654 case RAL_RF_2523: 1655 ural_rf_write(sc, RAL_RF1, 0x08804); 1656 ural_rf_write(sc, RAL_RF2, ural_rf2523_r2[chan - 1]); 1657 ural_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 1658 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 1659 break; 1660 1661 case RAL_RF_2524: 1662 ural_rf_write(sc, RAL_RF1, 0x0c808); 1663 ural_rf_write(sc, RAL_RF2, ural_rf2524_r2[chan - 1]); 1664 ural_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 1665 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 1666 break; 1667 1668 case RAL_RF_2525: 1669 ural_rf_write(sc, RAL_RF1, 0x08808); 1670 ural_rf_write(sc, RAL_RF2, ural_rf2525_hi_r2[chan - 1]); 1671 ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 1672 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 1673 1674 ural_rf_write(sc, RAL_RF1, 0x08808); 1675 ural_rf_write(sc, RAL_RF2, ural_rf2525_r2[chan - 1]); 1676 ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 1677 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 1678 break; 1679 1680 case RAL_RF_2525E: 1681 ural_rf_write(sc, RAL_RF1, 0x08808); 1682 ural_rf_write(sc, RAL_RF2, ural_rf2525e_r2[chan - 1]); 1683 ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 1684 ural_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 1685 break; 1686 1687 case RAL_RF_2526: 1688 ural_rf_write(sc, RAL_RF2, ural_rf2526_hi_r2[chan - 1]); 1689 ural_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 1690 ural_rf_write(sc, RAL_RF1, 0x08804); 1691 1692 ural_rf_write(sc, RAL_RF2, ural_rf2526_r2[chan - 1]); 1693 ural_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 1694 ural_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 1695 break; 1696 1697 /* dual-band RF */ 1698 case RAL_RF_5222: 1699 for (i = 0; ural_rf5222[i].chan != chan; i++); 1700 1701 ural_rf_write(sc, RAL_RF1, ural_rf5222[i].r1); 1702 ural_rf_write(sc, RAL_RF2, ural_rf5222[i].r2); 1703 ural_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 1704 ural_rf_write(sc, RAL_RF4, ural_rf5222[i].r4); 1705 break; 1706 } 1707 1708 if (ic->ic_opmode != IEEE80211_M_MONITOR && 1709 (ic->ic_flags & IEEE80211_F_SCAN) == 0) { 1710 /* set Japan filter bit for channel 14 */ 1711 tmp = ural_bbp_read(sc, 70); 1712 1713 tmp &= ~RAL_JAPAN_FILTER; 1714 if (chan == 14) 1715 tmp |= RAL_JAPAN_FILTER; 1716 1717 ural_bbp_write(sc, 70, tmp); 1718 1719 /* clear CRC errors */ 1720 ural_read(sc, RAL_STA_CSR0); 1721 1722 ural_pause(sc, hz / 100); 1723 ural_disable_rf_tune(sc); 1724 } 1725 1726 /* XXX doesn't belong here */ 1727 /* update basic rate set */ 1728 ural_set_basicrates(sc, c); 1729 1730 /* give the hardware some time to do the switchover */ 1731 ural_pause(sc, hz / 100); 1732 } 1733 1734 /* 1735 * Disable RF auto-tuning. 1736 */ 1737 static void 1738 ural_disable_rf_tune(struct ural_softc *sc) 1739 { 1740 uint32_t tmp; 1741 1742 if (sc->rf_rev != RAL_RF_2523) { 1743 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 1744 ural_rf_write(sc, RAL_RF1, tmp); 1745 } 1746 1747 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 1748 ural_rf_write(sc, RAL_RF3, tmp); 1749 1750 DPRINTFN(2, "disabling RF autotune\n"); 1751 } 1752 1753 /* 1754 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 1755 * synchronization. 1756 */ 1757 static void 1758 ural_enable_tsf_sync(struct ural_softc *sc) 1759 { 1760 struct ieee80211com *ic = &sc->sc_ic; 1761 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1762 uint16_t logcwmin, preload, tmp; 1763 1764 /* first, disable TSF synchronization */ 1765 ural_write(sc, RAL_TXRX_CSR19, 0); 1766 1767 tmp = (16 * vap->iv_bss->ni_intval) << 4; 1768 ural_write(sc, RAL_TXRX_CSR18, tmp); 1769 1770 logcwmin = (ic->ic_opmode == IEEE80211_M_IBSS) ? 2 : 0; 1771 preload = (ic->ic_opmode == IEEE80211_M_IBSS) ? 320 : 6; 1772 tmp = logcwmin << 12 | preload; 1773 ural_write(sc, RAL_TXRX_CSR20, tmp); 1774 1775 /* finally, enable TSF synchronization */ 1776 tmp = RAL_ENABLE_TSF | RAL_ENABLE_TBCN; 1777 if (ic->ic_opmode == IEEE80211_M_STA) 1778 tmp |= RAL_ENABLE_TSF_SYNC(1); 1779 else 1780 tmp |= RAL_ENABLE_TSF_SYNC(2) | RAL_ENABLE_BEACON_GENERATOR; 1781 ural_write(sc, RAL_TXRX_CSR19, tmp); 1782 1783 DPRINTF("enabling TSF synchronization\n"); 1784 } 1785 1786 static void 1787 ural_enable_tsf(struct ural_softc *sc) 1788 { 1789 /* first, disable TSF synchronization */ 1790 ural_write(sc, RAL_TXRX_CSR19, 0); 1791 ural_write(sc, RAL_TXRX_CSR19, RAL_ENABLE_TSF | RAL_ENABLE_TSF_SYNC(2)); 1792 } 1793 1794 #define RAL_RXTX_TURNAROUND 5 /* us */ 1795 static void 1796 ural_update_slot(struct ural_softc *sc) 1797 { 1798 struct ieee80211com *ic = &sc->sc_ic; 1799 uint16_t slottime, sifs, eifs; 1800 1801 slottime = IEEE80211_GET_SLOTTIME(ic); 1802 1803 /* 1804 * These settings may sound a bit inconsistent but this is what the 1805 * reference driver does. 1806 */ 1807 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1808 sifs = 16 - RAL_RXTX_TURNAROUND; 1809 eifs = 364; 1810 } else { 1811 sifs = 10 - RAL_RXTX_TURNAROUND; 1812 eifs = 64; 1813 } 1814 1815 ural_write(sc, RAL_MAC_CSR10, slottime); 1816 ural_write(sc, RAL_MAC_CSR11, sifs); 1817 ural_write(sc, RAL_MAC_CSR12, eifs); 1818 } 1819 1820 static void 1821 ural_set_txpreamble(struct ural_softc *sc) 1822 { 1823 struct ieee80211com *ic = &sc->sc_ic; 1824 uint16_t tmp; 1825 1826 tmp = ural_read(sc, RAL_TXRX_CSR10); 1827 1828 tmp &= ~RAL_SHORT_PREAMBLE; 1829 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1830 tmp |= RAL_SHORT_PREAMBLE; 1831 1832 ural_write(sc, RAL_TXRX_CSR10, tmp); 1833 } 1834 1835 static void 1836 ural_set_basicrates(struct ural_softc *sc, const struct ieee80211_channel *c) 1837 { 1838 /* XXX wrong, take from rate set */ 1839 /* update basic rate set */ 1840 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1841 /* 11a basic rates: 6, 12, 24Mbps */ 1842 ural_write(sc, RAL_TXRX_CSR11, 0x150); 1843 } else if (IEEE80211_IS_CHAN_ANYG(c)) { 1844 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1845 ural_write(sc, RAL_TXRX_CSR11, 0x15f); 1846 } else { 1847 /* 11b basic rates: 1, 2Mbps */ 1848 ural_write(sc, RAL_TXRX_CSR11, 0x3); 1849 } 1850 } 1851 1852 static void 1853 ural_set_bssid(struct ural_softc *sc, const uint8_t *bssid) 1854 { 1855 uint16_t tmp; 1856 1857 tmp = bssid[0] | bssid[1] << 8; 1858 ural_write(sc, RAL_MAC_CSR5, tmp); 1859 1860 tmp = bssid[2] | bssid[3] << 8; 1861 ural_write(sc, RAL_MAC_CSR6, tmp); 1862 1863 tmp = bssid[4] | bssid[5] << 8; 1864 ural_write(sc, RAL_MAC_CSR7, tmp); 1865 1866 DPRINTF("setting BSSID to %6D\n", bssid, ":"); 1867 } 1868 1869 static void 1870 ural_set_macaddr(struct ural_softc *sc, const uint8_t *addr) 1871 { 1872 uint16_t tmp; 1873 1874 tmp = addr[0] | addr[1] << 8; 1875 ural_write(sc, RAL_MAC_CSR2, tmp); 1876 1877 tmp = addr[2] | addr[3] << 8; 1878 ural_write(sc, RAL_MAC_CSR3, tmp); 1879 1880 tmp = addr[4] | addr[5] << 8; 1881 ural_write(sc, RAL_MAC_CSR4, tmp); 1882 1883 DPRINTF("setting MAC address to %6D\n", addr, ":"); 1884 } 1885 1886 static void 1887 ural_setpromisc(struct ural_softc *sc) 1888 { 1889 uint32_t tmp; 1890 1891 tmp = ural_read(sc, RAL_TXRX_CSR2); 1892 1893 tmp &= ~RAL_DROP_NOT_TO_ME; 1894 if (sc->sc_ic.ic_promisc == 0) 1895 tmp |= RAL_DROP_NOT_TO_ME; 1896 1897 ural_write(sc, RAL_TXRX_CSR2, tmp); 1898 1899 DPRINTF("%s promiscuous mode\n", sc->sc_ic.ic_promisc ? 1900 "entering" : "leaving"); 1901 } 1902 1903 static void 1904 ural_update_promisc(struct ieee80211com *ic) 1905 { 1906 struct ural_softc *sc = ic->ic_softc; 1907 1908 RAL_LOCK(sc); 1909 if (sc->sc_running) 1910 ural_setpromisc(sc); 1911 RAL_UNLOCK(sc); 1912 } 1913 1914 static const char * 1915 ural_get_rf(int rev) 1916 { 1917 switch (rev) { 1918 case RAL_RF_2522: return "RT2522"; 1919 case RAL_RF_2523: return "RT2523"; 1920 case RAL_RF_2524: return "RT2524"; 1921 case RAL_RF_2525: return "RT2525"; 1922 case RAL_RF_2525E: return "RT2525e"; 1923 case RAL_RF_2526: return "RT2526"; 1924 case RAL_RF_5222: return "RT5222"; 1925 default: return "unknown"; 1926 } 1927 } 1928 1929 static void 1930 ural_read_eeprom(struct ural_softc *sc) 1931 { 1932 struct ieee80211com *ic = &sc->sc_ic; 1933 uint16_t val; 1934 1935 ural_eeprom_read(sc, RAL_EEPROM_CONFIG0, &val, 2); 1936 val = le16toh(val); 1937 sc->rf_rev = (val >> 11) & 0x7; 1938 sc->hw_radio = (val >> 10) & 0x1; 1939 sc->led_mode = (val >> 6) & 0x7; 1940 sc->rx_ant = (val >> 4) & 0x3; 1941 sc->tx_ant = (val >> 2) & 0x3; 1942 sc->nb_ant = val & 0x3; 1943 1944 /* read MAC address */ 1945 ural_eeprom_read(sc, RAL_EEPROM_ADDRESS, ic->ic_macaddr, 6); 1946 1947 /* read default values for BBP registers */ 1948 ural_eeprom_read(sc, RAL_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1949 1950 /* read Tx power for all b/g channels */ 1951 ural_eeprom_read(sc, RAL_EEPROM_TXPOWER, sc->txpow, 14); 1952 } 1953 1954 static int 1955 ural_bbp_init(struct ural_softc *sc) 1956 { 1957 int i, ntries; 1958 1959 /* wait for BBP to be ready */ 1960 for (ntries = 0; ntries < 100; ntries++) { 1961 if (ural_bbp_read(sc, RAL_BBP_VERSION) != 0) 1962 break; 1963 if (ural_pause(sc, hz / 100)) 1964 break; 1965 } 1966 if (ntries == 100) { 1967 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 1968 return EIO; 1969 } 1970 1971 /* initialize BBP registers to default values */ 1972 for (i = 0; i < nitems(ural_def_bbp); i++) 1973 ural_bbp_write(sc, ural_def_bbp[i].reg, ural_def_bbp[i].val); 1974 1975 #if 0 1976 /* initialize BBP registers to values stored in EEPROM */ 1977 for (i = 0; i < 16; i++) { 1978 if (sc->bbp_prom[i].reg == 0xff) 1979 continue; 1980 ural_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1981 } 1982 #endif 1983 1984 return 0; 1985 } 1986 1987 static void 1988 ural_set_txantenna(struct ural_softc *sc, int antenna) 1989 { 1990 uint16_t tmp; 1991 uint8_t tx; 1992 1993 tx = ural_bbp_read(sc, RAL_BBP_TX) & ~RAL_BBP_ANTMASK; 1994 if (antenna == 1) 1995 tx |= RAL_BBP_ANTA; 1996 else if (antenna == 2) 1997 tx |= RAL_BBP_ANTB; 1998 else 1999 tx |= RAL_BBP_DIVERSITY; 2000 2001 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2002 if (sc->rf_rev == RAL_RF_2525E || sc->rf_rev == RAL_RF_2526 || 2003 sc->rf_rev == RAL_RF_5222) 2004 tx |= RAL_BBP_FLIPIQ; 2005 2006 ural_bbp_write(sc, RAL_BBP_TX, tx); 2007 2008 /* update values in PHY_CSR5 and PHY_CSR6 */ 2009 tmp = ural_read(sc, RAL_PHY_CSR5) & ~0x7; 2010 ural_write(sc, RAL_PHY_CSR5, tmp | (tx & 0x7)); 2011 2012 tmp = ural_read(sc, RAL_PHY_CSR6) & ~0x7; 2013 ural_write(sc, RAL_PHY_CSR6, tmp | (tx & 0x7)); 2014 } 2015 2016 static void 2017 ural_set_rxantenna(struct ural_softc *sc, int antenna) 2018 { 2019 uint8_t rx; 2020 2021 rx = ural_bbp_read(sc, RAL_BBP_RX) & ~RAL_BBP_ANTMASK; 2022 if (antenna == 1) 2023 rx |= RAL_BBP_ANTA; 2024 else if (antenna == 2) 2025 rx |= RAL_BBP_ANTB; 2026 else 2027 rx |= RAL_BBP_DIVERSITY; 2028 2029 /* need to force no I/Q flip for RF 2525e and 2526 */ 2030 if (sc->rf_rev == RAL_RF_2525E || sc->rf_rev == RAL_RF_2526) 2031 rx &= ~RAL_BBP_FLIPIQ; 2032 2033 ural_bbp_write(sc, RAL_BBP_RX, rx); 2034 } 2035 2036 static void 2037 ural_init(struct ural_softc *sc) 2038 { 2039 struct ieee80211com *ic = &sc->sc_ic; 2040 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2041 uint16_t tmp; 2042 int i, ntries; 2043 2044 RAL_LOCK_ASSERT(sc, MA_OWNED); 2045 2046 ural_set_testmode(sc); 2047 ural_write(sc, 0x308, 0x00f0); /* XXX magic */ 2048 2049 ural_stop(sc); 2050 2051 /* initialize MAC registers to default values */ 2052 for (i = 0; i < nitems(ural_def_mac); i++) 2053 ural_write(sc, ural_def_mac[i].reg, ural_def_mac[i].val); 2054 2055 /* wait for BBP and RF to wake up (this can take a long time!) */ 2056 for (ntries = 0; ntries < 100; ntries++) { 2057 tmp = ural_read(sc, RAL_MAC_CSR17); 2058 if ((tmp & (RAL_BBP_AWAKE | RAL_RF_AWAKE)) == 2059 (RAL_BBP_AWAKE | RAL_RF_AWAKE)) 2060 break; 2061 if (ural_pause(sc, hz / 100)) 2062 break; 2063 } 2064 if (ntries == 100) { 2065 device_printf(sc->sc_dev, 2066 "timeout waiting for BBP/RF to wakeup\n"); 2067 goto fail; 2068 } 2069 2070 /* we're ready! */ 2071 ural_write(sc, RAL_MAC_CSR1, RAL_HOST_READY); 2072 2073 /* set basic rate set (will be updated later) */ 2074 ural_write(sc, RAL_TXRX_CSR11, 0x15f); 2075 2076 if (ural_bbp_init(sc) != 0) 2077 goto fail; 2078 2079 ural_set_chan(sc, ic->ic_curchan); 2080 2081 /* clear statistic registers (STA_CSR0 to STA_CSR10) */ 2082 ural_read_multi(sc, RAL_STA_CSR0, sc->sta, sizeof sc->sta); 2083 2084 ural_set_txantenna(sc, sc->tx_ant); 2085 ural_set_rxantenna(sc, sc->rx_ant); 2086 2087 ural_set_macaddr(sc, vap ? vap->iv_myaddr : ic->ic_macaddr); 2088 2089 /* 2090 * Allocate Tx and Rx xfer queues. 2091 */ 2092 ural_setup_tx_list(sc); 2093 2094 /* kick Rx */ 2095 tmp = RAL_DROP_PHY | RAL_DROP_CRC; 2096 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2097 tmp |= RAL_DROP_CTL | RAL_DROP_BAD_VERSION; 2098 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2099 tmp |= RAL_DROP_TODS; 2100 if (ic->ic_promisc == 0) 2101 tmp |= RAL_DROP_NOT_TO_ME; 2102 } 2103 ural_write(sc, RAL_TXRX_CSR2, tmp); 2104 2105 sc->sc_running = 1; 2106 usbd_xfer_set_stall(sc->sc_xfer[URAL_BULK_WR]); 2107 usbd_transfer_start(sc->sc_xfer[URAL_BULK_RD]); 2108 return; 2109 2110 fail: ural_stop(sc); 2111 } 2112 2113 static void 2114 ural_stop(struct ural_softc *sc) 2115 { 2116 2117 RAL_LOCK_ASSERT(sc, MA_OWNED); 2118 2119 sc->sc_running = 0; 2120 2121 /* 2122 * Drain all the transfers, if not already drained: 2123 */ 2124 RAL_UNLOCK(sc); 2125 usbd_transfer_drain(sc->sc_xfer[URAL_BULK_WR]); 2126 usbd_transfer_drain(sc->sc_xfer[URAL_BULK_RD]); 2127 RAL_LOCK(sc); 2128 2129 ural_unsetup_tx_list(sc); 2130 2131 /* disable Rx */ 2132 ural_write(sc, RAL_TXRX_CSR2, RAL_DISABLE_RX); 2133 /* reset ASIC and BBP (but won't reset MAC registers!) */ 2134 ural_write(sc, RAL_MAC_CSR1, RAL_RESET_ASIC | RAL_RESET_BBP); 2135 /* wait a little */ 2136 ural_pause(sc, hz / 10); 2137 ural_write(sc, RAL_MAC_CSR1, 0); 2138 /* wait a little */ 2139 ural_pause(sc, hz / 10); 2140 } 2141 2142 static int 2143 ural_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2144 const struct ieee80211_bpf_params *params) 2145 { 2146 struct ieee80211com *ic = ni->ni_ic; 2147 struct ural_softc *sc = ic->ic_softc; 2148 2149 RAL_LOCK(sc); 2150 /* prevent management frames from being sent if we're not ready */ 2151 if (!sc->sc_running) { 2152 RAL_UNLOCK(sc); 2153 m_freem(m); 2154 return ENETDOWN; 2155 } 2156 if (sc->tx_nfree < RAL_TX_MINFREE) { 2157 RAL_UNLOCK(sc); 2158 m_freem(m); 2159 return EIO; 2160 } 2161 2162 if (params == NULL) { 2163 /* 2164 * Legacy path; interpret frame contents to decide 2165 * precisely how to send the frame. 2166 */ 2167 if (ural_tx_mgt(sc, m, ni) != 0) 2168 goto bad; 2169 } else { 2170 /* 2171 * Caller supplied explicit parameters to use in 2172 * sending the frame. 2173 */ 2174 if (ural_tx_raw(sc, m, ni, params) != 0) 2175 goto bad; 2176 } 2177 RAL_UNLOCK(sc); 2178 return 0; 2179 bad: 2180 RAL_UNLOCK(sc); 2181 return EIO; /* XXX */ 2182 } 2183 2184 static void 2185 ural_ratectl_start(struct ural_softc *sc, struct ieee80211_node *ni) 2186 { 2187 struct ieee80211vap *vap = ni->ni_vap; 2188 struct ural_vap *uvp = URAL_VAP(vap); 2189 2190 /* clear statistic registers (STA_CSR0 to STA_CSR10) */ 2191 ural_read_multi(sc, RAL_STA_CSR0, sc->sta, sizeof sc->sta); 2192 2193 usb_callout_reset(&uvp->ratectl_ch, hz, ural_ratectl_timeout, uvp); 2194 } 2195 2196 static void 2197 ural_ratectl_timeout(void *arg) 2198 { 2199 struct ural_vap *uvp = arg; 2200 struct ieee80211vap *vap = &uvp->vap; 2201 struct ieee80211com *ic = vap->iv_ic; 2202 2203 ieee80211_runtask(ic, &uvp->ratectl_task); 2204 } 2205 2206 static void 2207 ural_ratectl_task(void *arg, int pending) 2208 { 2209 struct ural_vap *uvp = arg; 2210 struct ieee80211vap *vap = &uvp->vap; 2211 struct ural_softc *sc = vap->iv_ic->ic_softc; 2212 struct ieee80211_ratectl_tx_stats *txs = &sc->sc_txs; 2213 int fail; 2214 2215 RAL_LOCK(sc); 2216 /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */ 2217 ural_read_multi(sc, RAL_STA_CSR0, sc->sta, sizeof(sc->sta)); 2218 2219 txs->flags = IEEE80211_RATECTL_TX_STATS_RETRIES; 2220 txs->nsuccess = sc->sta[7] + /* TX ok w/o retry */ 2221 sc->sta[8]; /* TX ok w/ retry */ 2222 fail = sc->sta[9]; /* TX retry-fail count */ 2223 txs->nframes = txs->nsuccess + fail; 2224 /* XXX fail * maxretry */ 2225 txs->nretries = sc->sta[8] + fail; 2226 2227 ieee80211_ratectl_tx_update(vap, txs); 2228 2229 /* count TX retry-fail as Tx errors */ 2230 if_inc_counter(vap->iv_ifp, IFCOUNTER_OERRORS, fail); 2231 2232 usb_callout_reset(&uvp->ratectl_ch, hz, ural_ratectl_timeout, uvp); 2233 RAL_UNLOCK(sc); 2234 } 2235 2236 static int 2237 ural_pause(struct ural_softc *sc, int timeout) 2238 { 2239 2240 usb_pause_mtx(&sc->sc_mtx, timeout); 2241 return (0); 2242 } 2243