if_rum.c revision 207077
1/* $FreeBSD: head/sys/dev/usb/wlan/if_rum.c 207077 2010-04-22 21:31:34Z thompsa $ */ 2 3/*- 4 * Copyright (c) 2005-2007 Damien Bergamini <damien.bergamini@free.fr> 5 * Copyright (c) 2006 Niall O'Higgins <niallo@openbsd.org> 6 * Copyright (c) 2007-2008 Hans Petter Selasky <hselasky@FreeBSD.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21#include <sys/cdefs.h> 22__FBSDID("$FreeBSD: head/sys/dev/usb/wlan/if_rum.c 207077 2010-04-22 21:31:34Z thompsa $"); 23 24/*- 25 * Ralink Technology RT2501USB/RT2601USB chipset driver 26 * http://www.ralinktech.com.tw/ 27 */ 28 29#include <sys/param.h> 30#include <sys/sockio.h> 31#include <sys/sysctl.h> 32#include <sys/lock.h> 33#include <sys/mutex.h> 34#include <sys/mbuf.h> 35#include <sys/kernel.h> 36#include <sys/socket.h> 37#include <sys/systm.h> 38#include <sys/malloc.h> 39#include <sys/module.h> 40#include <sys/bus.h> 41#include <sys/endian.h> 42#include <sys/kdb.h> 43 44#include <machine/bus.h> 45#include <machine/resource.h> 46#include <sys/rman.h> 47 48#include <net/bpf.h> 49#include <net/if.h> 50#include <net/if_arp.h> 51#include <net/ethernet.h> 52#include <net/if_dl.h> 53#include <net/if_media.h> 54#include <net/if_types.h> 55 56#ifdef INET 57#include <netinet/in.h> 58#include <netinet/in_systm.h> 59#include <netinet/in_var.h> 60#include <netinet/if_ether.h> 61#include <netinet/ip.h> 62#endif 63 64#include <net80211/ieee80211_var.h> 65#include <net80211/ieee80211_regdomain.h> 66#include <net80211/ieee80211_radiotap.h> 67#include <net80211/ieee80211_ratectl.h> 68 69#include <dev/usb/usb.h> 70#include <dev/usb/usbdi.h> 71#include "usbdevs.h" 72 73#define USB_DEBUG_VAR rum_debug 74#include <dev/usb/usb_debug.h> 75 76#include <dev/usb/wlan/if_rumreg.h> 77#include <dev/usb/wlan/if_rumvar.h> 78#include <dev/usb/wlan/if_rumfw.h> 79 80#ifdef USB_DEBUG 81static int rum_debug = 0; 82 83SYSCTL_NODE(_hw_usb, OID_AUTO, rum, CTLFLAG_RW, 0, "USB rum"); 84SYSCTL_INT(_hw_usb_rum, OID_AUTO, debug, CTLFLAG_RW, &rum_debug, 0, 85 "Debug level"); 86#endif 87 88static const struct usb_device_id rum_devs[] = { 89#define RUM_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 90 RUM_DEV(ABOCOM, HWU54DM), 91 RUM_DEV(ABOCOM, RT2573_2), 92 RUM_DEV(ABOCOM, RT2573_3), 93 RUM_DEV(ABOCOM, RT2573_4), 94 RUM_DEV(ABOCOM, WUG2700), 95 RUM_DEV(AMIT, CGWLUSB2GO), 96 RUM_DEV(ASUS, RT2573_1), 97 RUM_DEV(ASUS, RT2573_2), 98 RUM_DEV(BELKIN, F5D7050A), 99 RUM_DEV(BELKIN, F5D9050V3), 100 RUM_DEV(CISCOLINKSYS, WUSB54GC), 101 RUM_DEV(CISCOLINKSYS, WUSB54GR), 102 RUM_DEV(CONCEPTRONIC2, C54RU2), 103 RUM_DEV(COREGA, CGWLUSB2GL), 104 RUM_DEV(COREGA, CGWLUSB2GPX), 105 RUM_DEV(DICKSMITH, CWD854F), 106 RUM_DEV(DICKSMITH, RT2573), 107 RUM_DEV(EDIMAX, EW7318USG), 108 RUM_DEV(DLINK2, DWLG122C1), 109 RUM_DEV(DLINK2, WUA1340), 110 RUM_DEV(DLINK2, DWA111), 111 RUM_DEV(DLINK2, DWA110), 112 RUM_DEV(GIGABYTE, GNWB01GS), 113 RUM_DEV(GIGABYTE, GNWI05GS), 114 RUM_DEV(GIGASET, RT2573), 115 RUM_DEV(GOODWAY, RT2573), 116 RUM_DEV(GUILLEMOT, HWGUSB254LB), 117 RUM_DEV(GUILLEMOT, HWGUSB254V2AP), 118 RUM_DEV(HUAWEI3COM, WUB320G), 119 RUM_DEV(MELCO, G54HP), 120 RUM_DEV(MELCO, SG54HP), 121 RUM_DEV(MSI, RT2573_1), 122 RUM_DEV(MSI, RT2573_2), 123 RUM_DEV(MSI, RT2573_3), 124 RUM_DEV(MSI, RT2573_4), 125 RUM_DEV(NOVATECH, RT2573), 126 RUM_DEV(PLANEX2, GWUS54HP), 127 RUM_DEV(PLANEX2, GWUS54MINI2), 128 RUM_DEV(PLANEX2, GWUSMM), 129 RUM_DEV(QCOM, RT2573), 130 RUM_DEV(QCOM, RT2573_2), 131 RUM_DEV(QCOM, RT2573_3), 132 RUM_DEV(RALINK, RT2573), 133 RUM_DEV(RALINK, RT2573_2), 134 RUM_DEV(RALINK, RT2671), 135 RUM_DEV(SITECOMEU, WL113R2), 136 RUM_DEV(SITECOMEU, WL172), 137 RUM_DEV(SPARKLAN, RT2573), 138 RUM_DEV(SURECOM, RT2573), 139#undef RUM_DEV 140}; 141 142MODULE_DEPEND(rum, wlan, 1, 1, 1); 143MODULE_DEPEND(rum, usb, 1, 1, 1); 144 145static device_probe_t rum_match; 146static device_attach_t rum_attach; 147static device_detach_t rum_detach; 148 149static usb_callback_t rum_bulk_read_callback; 150static usb_callback_t rum_bulk_write_callback; 151 152static usb_error_t rum_do_request(struct rum_softc *sc, 153 struct usb_device_request *req, void *data); 154static struct ieee80211vap *rum_vap_create(struct ieee80211com *, 155 const char name[IFNAMSIZ], int unit, int opmode, 156 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 157 const uint8_t mac[IEEE80211_ADDR_LEN]); 158static void rum_vap_delete(struct ieee80211vap *); 159static void rum_tx_free(struct rum_tx_data *, int); 160static void rum_setup_tx_list(struct rum_softc *); 161static void rum_unsetup_tx_list(struct rum_softc *); 162static int rum_newstate(struct ieee80211vap *, 163 enum ieee80211_state, int); 164static void rum_setup_tx_desc(struct rum_softc *, 165 struct rum_tx_desc *, uint32_t, uint16_t, int, 166 int); 167static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 168 struct ieee80211_node *); 169static int rum_tx_raw(struct rum_softc *, struct mbuf *, 170 struct ieee80211_node *, 171 const struct ieee80211_bpf_params *); 172static int rum_tx_data(struct rum_softc *, struct mbuf *, 173 struct ieee80211_node *); 174static void rum_start(struct ifnet *); 175static int rum_ioctl(struct ifnet *, u_long, caddr_t); 176static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 177 int); 178static uint32_t rum_read(struct rum_softc *, uint16_t); 179static void rum_read_multi(struct rum_softc *, uint16_t, void *, 180 int); 181static usb_error_t rum_write(struct rum_softc *, uint16_t, uint32_t); 182static usb_error_t rum_write_multi(struct rum_softc *, uint16_t, void *, 183 size_t); 184static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 185static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 186static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 187static void rum_select_antenna(struct rum_softc *); 188static void rum_enable_mrr(struct rum_softc *); 189static void rum_set_txpreamble(struct rum_softc *); 190static void rum_set_basicrates(struct rum_softc *); 191static void rum_select_band(struct rum_softc *, 192 struct ieee80211_channel *); 193static void rum_set_chan(struct rum_softc *, 194 struct ieee80211_channel *); 195static void rum_enable_tsf_sync(struct rum_softc *); 196static void rum_enable_tsf(struct rum_softc *); 197static void rum_update_slot(struct ifnet *); 198static void rum_set_bssid(struct rum_softc *, const uint8_t *); 199static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 200static void rum_update_promisc(struct ifnet *); 201static void rum_setpromisc(struct rum_softc *); 202static const char *rum_get_rf(int); 203static void rum_read_eeprom(struct rum_softc *); 204static int rum_bbp_init(struct rum_softc *); 205static void rum_init_locked(struct rum_softc *); 206static void rum_init(void *); 207static void rum_stop(struct rum_softc *); 208static void rum_load_microcode(struct rum_softc *, const uint8_t *, 209 size_t); 210static int rum_prepare_beacon(struct rum_softc *, 211 struct ieee80211vap *); 212static int rum_raw_xmit(struct ieee80211_node *, struct mbuf *, 213 const struct ieee80211_bpf_params *); 214static void rum_scan_start(struct ieee80211com *); 215static void rum_scan_end(struct ieee80211com *); 216static void rum_set_channel(struct ieee80211com *); 217static int rum_get_rssi(struct rum_softc *, uint8_t); 218static void rum_ratectl_start(struct rum_softc *, 219 struct ieee80211_node *); 220static void rum_ratectl_timeout(void *); 221static void rum_ratectl_task(void *, int); 222static int rum_pause(struct rum_softc *, int); 223 224static const struct { 225 uint32_t reg; 226 uint32_t val; 227} rum_def_mac[] = { 228 { RT2573_TXRX_CSR0, 0x025fb032 }, 229 { RT2573_TXRX_CSR1, 0x9eaa9eaf }, 230 { RT2573_TXRX_CSR2, 0x8a8b8c8d }, 231 { RT2573_TXRX_CSR3, 0x00858687 }, 232 { RT2573_TXRX_CSR7, 0x2e31353b }, 233 { RT2573_TXRX_CSR8, 0x2a2a2a2c }, 234 { RT2573_TXRX_CSR15, 0x0000000f }, 235 { RT2573_MAC_CSR6, 0x00000fff }, 236 { RT2573_MAC_CSR8, 0x016c030a }, 237 { RT2573_MAC_CSR10, 0x00000718 }, 238 { RT2573_MAC_CSR12, 0x00000004 }, 239 { RT2573_MAC_CSR13, 0x00007f00 }, 240 { RT2573_SEC_CSR0, 0x00000000 }, 241 { RT2573_SEC_CSR1, 0x00000000 }, 242 { RT2573_SEC_CSR5, 0x00000000 }, 243 { RT2573_PHY_CSR1, 0x000023b0 }, 244 { RT2573_PHY_CSR5, 0x00040a06 }, 245 { RT2573_PHY_CSR6, 0x00080606 }, 246 { RT2573_PHY_CSR7, 0x00000408 }, 247 { RT2573_AIFSN_CSR, 0x00002273 }, 248 { RT2573_CWMIN_CSR, 0x00002344 }, 249 { RT2573_CWMAX_CSR, 0x000034aa } 250}; 251 252static const struct { 253 uint8_t reg; 254 uint8_t val; 255} rum_def_bbp[] = { 256 { 3, 0x80 }, 257 { 15, 0x30 }, 258 { 17, 0x20 }, 259 { 21, 0xc8 }, 260 { 22, 0x38 }, 261 { 23, 0x06 }, 262 { 24, 0xfe }, 263 { 25, 0x0a }, 264 { 26, 0x0d }, 265 { 32, 0x0b }, 266 { 34, 0x12 }, 267 { 37, 0x07 }, 268 { 39, 0xf8 }, 269 { 41, 0x60 }, 270 { 53, 0x10 }, 271 { 54, 0x18 }, 272 { 60, 0x10 }, 273 { 61, 0x04 }, 274 { 62, 0x04 }, 275 { 75, 0xfe }, 276 { 86, 0xfe }, 277 { 88, 0xfe }, 278 { 90, 0x0f }, 279 { 99, 0x00 }, 280 { 102, 0x16 }, 281 { 107, 0x04 } 282}; 283 284static const struct rfprog { 285 uint8_t chan; 286 uint32_t r1, r2, r3, r4; 287} rum_rf5226[] = { 288 { 1, 0x00b03, 0x001e1, 0x1a014, 0x30282 }, 289 { 2, 0x00b03, 0x001e1, 0x1a014, 0x30287 }, 290 { 3, 0x00b03, 0x001e2, 0x1a014, 0x30282 }, 291 { 4, 0x00b03, 0x001e2, 0x1a014, 0x30287 }, 292 { 5, 0x00b03, 0x001e3, 0x1a014, 0x30282 }, 293 { 6, 0x00b03, 0x001e3, 0x1a014, 0x30287 }, 294 { 7, 0x00b03, 0x001e4, 0x1a014, 0x30282 }, 295 { 8, 0x00b03, 0x001e4, 0x1a014, 0x30287 }, 296 { 9, 0x00b03, 0x001e5, 0x1a014, 0x30282 }, 297 { 10, 0x00b03, 0x001e5, 0x1a014, 0x30287 }, 298 { 11, 0x00b03, 0x001e6, 0x1a014, 0x30282 }, 299 { 12, 0x00b03, 0x001e6, 0x1a014, 0x30287 }, 300 { 13, 0x00b03, 0x001e7, 0x1a014, 0x30282 }, 301 { 14, 0x00b03, 0x001e8, 0x1a014, 0x30284 }, 302 303 { 34, 0x00b03, 0x20266, 0x36014, 0x30282 }, 304 { 38, 0x00b03, 0x20267, 0x36014, 0x30284 }, 305 { 42, 0x00b03, 0x20268, 0x36014, 0x30286 }, 306 { 46, 0x00b03, 0x20269, 0x36014, 0x30288 }, 307 308 { 36, 0x00b03, 0x00266, 0x26014, 0x30288 }, 309 { 40, 0x00b03, 0x00268, 0x26014, 0x30280 }, 310 { 44, 0x00b03, 0x00269, 0x26014, 0x30282 }, 311 { 48, 0x00b03, 0x0026a, 0x26014, 0x30284 }, 312 { 52, 0x00b03, 0x0026b, 0x26014, 0x30286 }, 313 { 56, 0x00b03, 0x0026c, 0x26014, 0x30288 }, 314 { 60, 0x00b03, 0x0026e, 0x26014, 0x30280 }, 315 { 64, 0x00b03, 0x0026f, 0x26014, 0x30282 }, 316 317 { 100, 0x00b03, 0x0028a, 0x2e014, 0x30280 }, 318 { 104, 0x00b03, 0x0028b, 0x2e014, 0x30282 }, 319 { 108, 0x00b03, 0x0028c, 0x2e014, 0x30284 }, 320 { 112, 0x00b03, 0x0028d, 0x2e014, 0x30286 }, 321 { 116, 0x00b03, 0x0028e, 0x2e014, 0x30288 }, 322 { 120, 0x00b03, 0x002a0, 0x2e014, 0x30280 }, 323 { 124, 0x00b03, 0x002a1, 0x2e014, 0x30282 }, 324 { 128, 0x00b03, 0x002a2, 0x2e014, 0x30284 }, 325 { 132, 0x00b03, 0x002a3, 0x2e014, 0x30286 }, 326 { 136, 0x00b03, 0x002a4, 0x2e014, 0x30288 }, 327 { 140, 0x00b03, 0x002a6, 0x2e014, 0x30280 }, 328 329 { 149, 0x00b03, 0x002a8, 0x2e014, 0x30287 }, 330 { 153, 0x00b03, 0x002a9, 0x2e014, 0x30289 }, 331 { 157, 0x00b03, 0x002ab, 0x2e014, 0x30281 }, 332 { 161, 0x00b03, 0x002ac, 0x2e014, 0x30283 }, 333 { 165, 0x00b03, 0x002ad, 0x2e014, 0x30285 } 334}, rum_rf5225[] = { 335 { 1, 0x00b33, 0x011e1, 0x1a014, 0x30282 }, 336 { 2, 0x00b33, 0x011e1, 0x1a014, 0x30287 }, 337 { 3, 0x00b33, 0x011e2, 0x1a014, 0x30282 }, 338 { 4, 0x00b33, 0x011e2, 0x1a014, 0x30287 }, 339 { 5, 0x00b33, 0x011e3, 0x1a014, 0x30282 }, 340 { 6, 0x00b33, 0x011e3, 0x1a014, 0x30287 }, 341 { 7, 0x00b33, 0x011e4, 0x1a014, 0x30282 }, 342 { 8, 0x00b33, 0x011e4, 0x1a014, 0x30287 }, 343 { 9, 0x00b33, 0x011e5, 0x1a014, 0x30282 }, 344 { 10, 0x00b33, 0x011e5, 0x1a014, 0x30287 }, 345 { 11, 0x00b33, 0x011e6, 0x1a014, 0x30282 }, 346 { 12, 0x00b33, 0x011e6, 0x1a014, 0x30287 }, 347 { 13, 0x00b33, 0x011e7, 0x1a014, 0x30282 }, 348 { 14, 0x00b33, 0x011e8, 0x1a014, 0x30284 }, 349 350 { 34, 0x00b33, 0x01266, 0x26014, 0x30282 }, 351 { 38, 0x00b33, 0x01267, 0x26014, 0x30284 }, 352 { 42, 0x00b33, 0x01268, 0x26014, 0x30286 }, 353 { 46, 0x00b33, 0x01269, 0x26014, 0x30288 }, 354 355 { 36, 0x00b33, 0x01266, 0x26014, 0x30288 }, 356 { 40, 0x00b33, 0x01268, 0x26014, 0x30280 }, 357 { 44, 0x00b33, 0x01269, 0x26014, 0x30282 }, 358 { 48, 0x00b33, 0x0126a, 0x26014, 0x30284 }, 359 { 52, 0x00b33, 0x0126b, 0x26014, 0x30286 }, 360 { 56, 0x00b33, 0x0126c, 0x26014, 0x30288 }, 361 { 60, 0x00b33, 0x0126e, 0x26014, 0x30280 }, 362 { 64, 0x00b33, 0x0126f, 0x26014, 0x30282 }, 363 364 { 100, 0x00b33, 0x0128a, 0x2e014, 0x30280 }, 365 { 104, 0x00b33, 0x0128b, 0x2e014, 0x30282 }, 366 { 108, 0x00b33, 0x0128c, 0x2e014, 0x30284 }, 367 { 112, 0x00b33, 0x0128d, 0x2e014, 0x30286 }, 368 { 116, 0x00b33, 0x0128e, 0x2e014, 0x30288 }, 369 { 120, 0x00b33, 0x012a0, 0x2e014, 0x30280 }, 370 { 124, 0x00b33, 0x012a1, 0x2e014, 0x30282 }, 371 { 128, 0x00b33, 0x012a2, 0x2e014, 0x30284 }, 372 { 132, 0x00b33, 0x012a3, 0x2e014, 0x30286 }, 373 { 136, 0x00b33, 0x012a4, 0x2e014, 0x30288 }, 374 { 140, 0x00b33, 0x012a6, 0x2e014, 0x30280 }, 375 376 { 149, 0x00b33, 0x012a8, 0x2e014, 0x30287 }, 377 { 153, 0x00b33, 0x012a9, 0x2e014, 0x30289 }, 378 { 157, 0x00b33, 0x012ab, 0x2e014, 0x30281 }, 379 { 161, 0x00b33, 0x012ac, 0x2e014, 0x30283 }, 380 { 165, 0x00b33, 0x012ad, 0x2e014, 0x30285 } 381}; 382 383static const struct usb_config rum_config[RUM_N_TRANSFER] = { 384 [RUM_BULK_WR] = { 385 .type = UE_BULK, 386 .endpoint = UE_ADDR_ANY, 387 .direction = UE_DIR_OUT, 388 .bufsize = (MCLBYTES + RT2573_TX_DESC_SIZE + 8), 389 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 390 .callback = rum_bulk_write_callback, 391 .timeout = 5000, /* ms */ 392 }, 393 [RUM_BULK_RD] = { 394 .type = UE_BULK, 395 .endpoint = UE_ADDR_ANY, 396 .direction = UE_DIR_IN, 397 .bufsize = (MCLBYTES + RT2573_RX_DESC_SIZE), 398 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 399 .callback = rum_bulk_read_callback, 400 }, 401}; 402 403static int 404rum_match(device_t self) 405{ 406 struct usb_attach_arg *uaa = device_get_ivars(self); 407 408 if (uaa->usb_mode != USB_MODE_HOST) 409 return (ENXIO); 410 if (uaa->info.bConfigIndex != 0) 411 return (ENXIO); 412 if (uaa->info.bIfaceIndex != RT2573_IFACE_INDEX) 413 return (ENXIO); 414 415 return (usbd_lookup_id_by_uaa(rum_devs, sizeof(rum_devs), uaa)); 416} 417 418static int 419rum_attach(device_t self) 420{ 421 struct usb_attach_arg *uaa = device_get_ivars(self); 422 struct rum_softc *sc = device_get_softc(self); 423 struct ieee80211com *ic; 424 struct ifnet *ifp; 425 uint8_t iface_index, bands; 426 uint32_t tmp; 427 int error, ntries; 428 429 device_set_usb_desc(self); 430 sc->sc_udev = uaa->device; 431 sc->sc_dev = self; 432 433 mtx_init(&sc->sc_mtx, device_get_nameunit(self), 434 MTX_NETWORK_LOCK, MTX_DEF); 435 436 iface_index = RT2573_IFACE_INDEX; 437 error = usbd_transfer_setup(uaa->device, &iface_index, 438 sc->sc_xfer, rum_config, RUM_N_TRANSFER, sc, &sc->sc_mtx); 439 if (error) { 440 device_printf(self, "could not allocate USB transfers, " 441 "err=%s\n", usbd_errstr(error)); 442 goto detach; 443 } 444 445 RUM_LOCK(sc); 446 /* retrieve RT2573 rev. no */ 447 for (ntries = 0; ntries < 100; ntries++) { 448 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 449 break; 450 if (rum_pause(sc, hz / 100)) 451 break; 452 } 453 if (ntries == 100) { 454 device_printf(sc->sc_dev, "timeout waiting for chip to settle\n"); 455 RUM_UNLOCK(sc); 456 goto detach; 457 } 458 459 /* retrieve MAC address and various other things from EEPROM */ 460 rum_read_eeprom(sc); 461 462 device_printf(sc->sc_dev, "MAC/BBP RT2573 (rev 0x%05x), RF %s\n", 463 tmp, rum_get_rf(sc->rf_rev)); 464 465 rum_load_microcode(sc, rt2573_ucode, sizeof(rt2573_ucode)); 466 RUM_UNLOCK(sc); 467 468 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 469 if (ifp == NULL) { 470 device_printf(sc->sc_dev, "can not if_alloc()\n"); 471 goto detach; 472 } 473 ic = ifp->if_l2com; 474 475 ifp->if_softc = sc; 476 if_initname(ifp, "rum", device_get_unit(sc->sc_dev)); 477 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 478 ifp->if_init = rum_init; 479 ifp->if_ioctl = rum_ioctl; 480 ifp->if_start = rum_start; 481 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 482 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 483 IFQ_SET_READY(&ifp->if_snd); 484 485 ic->ic_ifp = ifp; 486 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 487 488 /* set device capabilities */ 489 ic->ic_caps = 490 IEEE80211_C_STA /* station mode supported */ 491 | IEEE80211_C_IBSS /* IBSS mode supported */ 492 | IEEE80211_C_MONITOR /* monitor mode supported */ 493 | IEEE80211_C_HOSTAP /* HostAp mode supported */ 494 | IEEE80211_C_TXPMGT /* tx power management */ 495 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 496 | IEEE80211_C_SHSLOT /* short slot time supported */ 497 | IEEE80211_C_BGSCAN /* bg scanning supported */ 498 | IEEE80211_C_WPA /* 802.11i */ 499 ; 500 501 bands = 0; 502 setbit(&bands, IEEE80211_MODE_11B); 503 setbit(&bands, IEEE80211_MODE_11G); 504 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) 505 setbit(&bands, IEEE80211_MODE_11A); 506 ieee80211_init_channels(ic, NULL, &bands); 507 508 ieee80211_ifattach(ic, sc->sc_bssid); 509 ic->ic_update_promisc = rum_update_promisc; 510 ic->ic_raw_xmit = rum_raw_xmit; 511 ic->ic_scan_start = rum_scan_start; 512 ic->ic_scan_end = rum_scan_end; 513 ic->ic_set_channel = rum_set_channel; 514 515 ic->ic_vap_create = rum_vap_create; 516 ic->ic_vap_delete = rum_vap_delete; 517 518 ieee80211_radiotap_attach(ic, 519 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 520 RT2573_TX_RADIOTAP_PRESENT, 521 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 522 RT2573_RX_RADIOTAP_PRESENT); 523 524 if (bootverbose) 525 ieee80211_announce(ic); 526 527 return (0); 528 529detach: 530 rum_detach(self); 531 return (ENXIO); /* failure */ 532} 533 534static int 535rum_detach(device_t self) 536{ 537 struct rum_softc *sc = device_get_softc(self); 538 struct ifnet *ifp = sc->sc_ifp; 539 struct ieee80211com *ic; 540 541 /* stop all USB transfers */ 542 usbd_transfer_unsetup(sc->sc_xfer, RUM_N_TRANSFER); 543 544 /* free TX list, if any */ 545 RUM_LOCK(sc); 546 rum_unsetup_tx_list(sc); 547 RUM_UNLOCK(sc); 548 549 if (ifp) { 550 ic = ifp->if_l2com; 551 ieee80211_ifdetach(ic); 552 if_free(ifp); 553 } 554 mtx_destroy(&sc->sc_mtx); 555 556 return (0); 557} 558 559static usb_error_t 560rum_do_request(struct rum_softc *sc, 561 struct usb_device_request *req, void *data) 562{ 563 usb_error_t err; 564 int ntries = 10; 565 566 while (ntries--) { 567 err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, 568 req, data, 0, NULL, 250 /* ms */); 569 if (err == 0) 570 break; 571 572 DPRINTFN(1, "Control request failed, %s (retrying)\n", 573 usbd_errstr(err)); 574 if (rum_pause(sc, hz / 100)) 575 break; 576 } 577 return (err); 578} 579 580static struct ieee80211vap * 581rum_vap_create(struct ieee80211com *ic, 582 const char name[IFNAMSIZ], int unit, int opmode, int flags, 583 const uint8_t bssid[IEEE80211_ADDR_LEN], 584 const uint8_t mac[IEEE80211_ADDR_LEN]) 585{ 586 struct rum_softc *sc = ic->ic_ifp->if_softc; 587 struct rum_vap *rvp; 588 struct ieee80211vap *vap; 589 590 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 591 return NULL; 592 rvp = (struct rum_vap *) malloc(sizeof(struct rum_vap), 593 M_80211_VAP, M_NOWAIT | M_ZERO); 594 if (rvp == NULL) 595 return NULL; 596 vap = &rvp->vap; 597 /* enable s/w bmiss handling for sta mode */ 598 ieee80211_vap_setup(ic, vap, name, unit, opmode, 599 flags | IEEE80211_CLONE_NOBEACONS, bssid, mac); 600 601 /* override state transition machine */ 602 rvp->newstate = vap->iv_newstate; 603 vap->iv_newstate = rum_newstate; 604 605 usb_callout_init_mtx(&rvp->ratectl_ch, &sc->sc_mtx, 0); 606 TASK_INIT(&rvp->ratectl_task, 0, rum_ratectl_task, rvp); 607 ieee80211_ratectl_init(vap); 608 ieee80211_ratectl_setinterval(vap, 1000 /* 1 sec */); 609 /* complete setup */ 610 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 611 ic->ic_opmode = opmode; 612 return vap; 613} 614 615static void 616rum_vap_delete(struct ieee80211vap *vap) 617{ 618 struct rum_vap *rvp = RUM_VAP(vap); 619 struct ieee80211com *ic = vap->iv_ic; 620 621 usb_callout_drain(&rvp->ratectl_ch); 622 ieee80211_draintask(ic, &rvp->ratectl_task); 623 ieee80211_ratectl_deinit(vap); 624 ieee80211_vap_detach(vap); 625 free(rvp, M_80211_VAP); 626} 627 628static void 629rum_tx_free(struct rum_tx_data *data, int txerr) 630{ 631 struct rum_softc *sc = data->sc; 632 633 if (data->m != NULL) { 634 if (data->m->m_flags & M_TXCB) 635 ieee80211_process_callback(data->ni, data->m, 636 txerr ? ETIMEDOUT : 0); 637 m_freem(data->m); 638 data->m = NULL; 639 640 ieee80211_free_node(data->ni); 641 data->ni = NULL; 642 } 643 STAILQ_INSERT_TAIL(&sc->tx_free, data, next); 644 sc->tx_nfree++; 645} 646 647static void 648rum_setup_tx_list(struct rum_softc *sc) 649{ 650 struct rum_tx_data *data; 651 int i; 652 653 sc->tx_nfree = 0; 654 STAILQ_INIT(&sc->tx_q); 655 STAILQ_INIT(&sc->tx_free); 656 657 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 658 data = &sc->tx_data[i]; 659 660 data->sc = sc; 661 STAILQ_INSERT_TAIL(&sc->tx_free, data, next); 662 sc->tx_nfree++; 663 } 664} 665 666static void 667rum_unsetup_tx_list(struct rum_softc *sc) 668{ 669 struct rum_tx_data *data; 670 int i; 671 672 /* make sure any subsequent use of the queues will fail */ 673 sc->tx_nfree = 0; 674 STAILQ_INIT(&sc->tx_q); 675 STAILQ_INIT(&sc->tx_free); 676 677 /* free up all node references and mbufs */ 678 for (i = 0; i < RUM_TX_LIST_COUNT; i++) { 679 data = &sc->tx_data[i]; 680 681 if (data->m != NULL) { 682 m_freem(data->m); 683 data->m = NULL; 684 } 685 if (data->ni != NULL) { 686 ieee80211_free_node(data->ni); 687 data->ni = NULL; 688 } 689 } 690} 691 692static int 693rum_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 694{ 695 struct rum_vap *rvp = RUM_VAP(vap); 696 struct ieee80211com *ic = vap->iv_ic; 697 struct rum_softc *sc = ic->ic_ifp->if_softc; 698 const struct ieee80211_txparam *tp; 699 enum ieee80211_state ostate; 700 struct ieee80211_node *ni; 701 uint32_t tmp; 702 703 ostate = vap->iv_state; 704 DPRINTF("%s -> %s\n", 705 ieee80211_state_name[ostate], 706 ieee80211_state_name[nstate]); 707 708 IEEE80211_UNLOCK(ic); 709 RUM_LOCK(sc); 710 usb_callout_stop(&rvp->ratectl_ch); 711 712 switch (nstate) { 713 case IEEE80211_S_INIT: 714 if (ostate == IEEE80211_S_RUN) { 715 /* abort TSF synchronization */ 716 tmp = rum_read(sc, RT2573_TXRX_CSR9); 717 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 718 } 719 break; 720 721 case IEEE80211_S_RUN: 722 ni = vap->iv_bss; 723 724 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 725 rum_update_slot(ic->ic_ifp); 726 rum_enable_mrr(sc); 727 rum_set_txpreamble(sc); 728 rum_set_basicrates(sc); 729 IEEE80211_ADDR_COPY(sc->sc_bssid, ni->ni_bssid); 730 rum_set_bssid(sc, sc->sc_bssid); 731 } 732 733 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 734 vap->iv_opmode == IEEE80211_M_IBSS) 735 rum_prepare_beacon(sc, vap); 736 737 if (vap->iv_opmode != IEEE80211_M_MONITOR) 738 rum_enable_tsf_sync(sc); 739 else 740 rum_enable_tsf(sc); 741 742 /* enable automatic rate adaptation */ 743 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; 744 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) 745 rum_ratectl_start(sc, ni); 746 break; 747 default: 748 break; 749 } 750 RUM_UNLOCK(sc); 751 IEEE80211_LOCK(ic); 752 return (rvp->newstate(vap, nstate, arg)); 753} 754 755static void 756rum_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 757{ 758 struct rum_softc *sc = usbd_xfer_softc(xfer); 759 struct ifnet *ifp = sc->sc_ifp; 760 struct ieee80211vap *vap; 761 struct rum_tx_data *data; 762 struct mbuf *m; 763 struct usb_page_cache *pc; 764 unsigned int len; 765 int actlen, sumlen; 766 767 usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL); 768 769 switch (USB_GET_STATE(xfer)) { 770 case USB_ST_TRANSFERRED: 771 DPRINTFN(11, "transfer complete, %d bytes\n", actlen); 772 773 /* free resources */ 774 data = usbd_xfer_get_priv(xfer); 775 rum_tx_free(data, 0); 776 usbd_xfer_set_priv(xfer, NULL); 777 778 ifp->if_opackets++; 779 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 780 781 /* FALLTHROUGH */ 782 case USB_ST_SETUP: 783tr_setup: 784 data = STAILQ_FIRST(&sc->tx_q); 785 if (data) { 786 STAILQ_REMOVE_HEAD(&sc->tx_q, next); 787 m = data->m; 788 789 if (m->m_pkthdr.len > (MCLBYTES + RT2573_TX_DESC_SIZE)) { 790 DPRINTFN(0, "data overflow, %u bytes\n", 791 m->m_pkthdr.len); 792 m->m_pkthdr.len = (MCLBYTES + RT2573_TX_DESC_SIZE); 793 } 794 pc = usbd_xfer_get_frame(xfer, 0); 795 usbd_copy_in(pc, 0, &data->desc, RT2573_TX_DESC_SIZE); 796 usbd_m_copy_in(pc, RT2573_TX_DESC_SIZE, m, 0, 797 m->m_pkthdr.len); 798 799 vap = data->ni->ni_vap; 800 if (ieee80211_radiotap_active_vap(vap)) { 801 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 802 803 tap->wt_flags = 0; 804 tap->wt_rate = data->rate; 805 tap->wt_antenna = sc->tx_ant; 806 807 ieee80211_radiotap_tx(vap, m); 808 } 809 810 /* align end on a 4-bytes boundary */ 811 len = (RT2573_TX_DESC_SIZE + m->m_pkthdr.len + 3) & ~3; 812 if ((len % 64) == 0) 813 len += 4; 814 815 DPRINTFN(11, "sending frame len=%u xferlen=%u\n", 816 m->m_pkthdr.len, len); 817 818 usbd_xfer_set_frame_len(xfer, 0, len); 819 usbd_xfer_set_priv(xfer, data); 820 821 usbd_transfer_submit(xfer); 822 } 823 RUM_UNLOCK(sc); 824 rum_start(ifp); 825 RUM_LOCK(sc); 826 break; 827 828 default: /* Error */ 829 DPRINTFN(11, "transfer error, %s\n", 830 usbd_errstr(error)); 831 832 ifp->if_oerrors++; 833 data = usbd_xfer_get_priv(xfer); 834 if (data != NULL) { 835 rum_tx_free(data, error); 836 usbd_xfer_set_priv(xfer, NULL); 837 } 838 839 if (error != USB_ERR_CANCELLED) { 840 if (error == USB_ERR_TIMEOUT) 841 device_printf(sc->sc_dev, "device timeout\n"); 842 843 /* 844 * Try to clear stall first, also if other 845 * errors occur, hence clearing stall 846 * introduces a 50 ms delay: 847 */ 848 usbd_xfer_set_stall(xfer); 849 goto tr_setup; 850 } 851 break; 852 } 853} 854 855static void 856rum_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 857{ 858 struct rum_softc *sc = usbd_xfer_softc(xfer); 859 struct ifnet *ifp = sc->sc_ifp; 860 struct ieee80211com *ic = ifp->if_l2com; 861 struct ieee80211_node *ni; 862 struct mbuf *m = NULL; 863 struct usb_page_cache *pc; 864 uint32_t flags; 865 uint8_t rssi = 0; 866 int len; 867 868 usbd_xfer_status(xfer, &len, NULL, NULL, NULL); 869 870 switch (USB_GET_STATE(xfer)) { 871 case USB_ST_TRANSFERRED: 872 873 DPRINTFN(15, "rx done, actlen=%d\n", len); 874 875 if (len < RT2573_RX_DESC_SIZE + IEEE80211_MIN_LEN) { 876 DPRINTF("%s: xfer too short %d\n", 877 device_get_nameunit(sc->sc_dev), len); 878 ifp->if_ierrors++; 879 goto tr_setup; 880 } 881 882 len -= RT2573_RX_DESC_SIZE; 883 pc = usbd_xfer_get_frame(xfer, 0); 884 usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE); 885 886 rssi = rum_get_rssi(sc, sc->sc_rx_desc.rssi); 887 flags = le32toh(sc->sc_rx_desc.flags); 888 if (flags & RT2573_RX_CRC_ERROR) { 889 /* 890 * This should not happen since we did not 891 * request to receive those frames when we 892 * filled RUM_TXRX_CSR2: 893 */ 894 DPRINTFN(5, "PHY or CRC error\n"); 895 ifp->if_ierrors++; 896 goto tr_setup; 897 } 898 899 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 900 if (m == NULL) { 901 DPRINTF("could not allocate mbuf\n"); 902 ifp->if_ierrors++; 903 goto tr_setup; 904 } 905 usbd_copy_out(pc, RT2573_RX_DESC_SIZE, 906 mtod(m, uint8_t *), len); 907 908 /* finalize mbuf */ 909 m->m_pkthdr.rcvif = ifp; 910 m->m_pkthdr.len = m->m_len = (flags >> 16) & 0xfff; 911 912 if (ieee80211_radiotap_active(ic)) { 913 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 914 915 /* XXX read tsf */ 916 tap->wr_flags = 0; 917 tap->wr_rate = ieee80211_plcp2rate(sc->sc_rx_desc.rate, 918 (flags & RT2573_RX_OFDM) ? 919 IEEE80211_T_OFDM : IEEE80211_T_CCK); 920 tap->wr_antsignal = RT2573_NOISE_FLOOR + rssi; 921 tap->wr_antnoise = RT2573_NOISE_FLOOR; 922 tap->wr_antenna = sc->rx_ant; 923 } 924 /* FALLTHROUGH */ 925 case USB_ST_SETUP: 926tr_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 RUM_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, 941 RT2573_NOISE_FLOOR); 942 ieee80211_free_node(ni); 943 } else 944 (void) ieee80211_input_all(ic, m, rssi, 945 RT2573_NOISE_FLOOR); 946 } 947 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 && 948 !IFQ_IS_EMPTY(&ifp->if_snd)) 949 rum_start(ifp); 950 RUM_LOCK(sc); 951 return; 952 953 default: /* Error */ 954 if (error != USB_ERR_CANCELLED) { 955 /* try to clear stall first */ 956 usbd_xfer_set_stall(xfer); 957 goto tr_setup; 958 } 959 return; 960 } 961} 962 963static uint8_t 964rum_plcp_signal(int rate) 965{ 966 switch (rate) { 967 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 968 case 12: return 0xb; 969 case 18: return 0xf; 970 case 24: return 0xa; 971 case 36: return 0xe; 972 case 48: return 0x9; 973 case 72: return 0xd; 974 case 96: return 0x8; 975 case 108: return 0xc; 976 977 /* CCK rates (NB: not IEEE std, device-specific) */ 978 case 2: return 0x0; 979 case 4: return 0x1; 980 case 11: return 0x2; 981 case 22: return 0x3; 982 } 983 return 0xff; /* XXX unsupported/unknown rate */ 984} 985 986static void 987rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 988 uint32_t flags, uint16_t xflags, int len, int rate) 989{ 990 struct ifnet *ifp = sc->sc_ifp; 991 struct ieee80211com *ic = ifp->if_l2com; 992 uint16_t plcp_length; 993 int remainder; 994 995 desc->flags = htole32(flags); 996 desc->flags |= htole32(RT2573_TX_VALID); 997 desc->flags |= htole32(len << 16); 998 999 desc->xflags = htole16(xflags); 1000 1001 desc->wme = htole16(RT2573_QID(0) | RT2573_AIFSN(2) | 1002 RT2573_LOGCWMIN(4) | RT2573_LOGCWMAX(10)); 1003 1004 /* setup PLCP fields */ 1005 desc->plcp_signal = rum_plcp_signal(rate); 1006 desc->plcp_service = 4; 1007 1008 len += IEEE80211_CRC_LEN; 1009 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1010 desc->flags |= htole32(RT2573_TX_OFDM); 1011 1012 plcp_length = len & 0xfff; 1013 desc->plcp_length_hi = plcp_length >> 6; 1014 desc->plcp_length_lo = plcp_length & 0x3f; 1015 } else { 1016 plcp_length = (16 * len + rate - 1) / rate; 1017 if (rate == 22) { 1018 remainder = (16 * len) % 22; 1019 if (remainder != 0 && remainder < 7) 1020 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1021 } 1022 desc->plcp_length_hi = plcp_length >> 8; 1023 desc->plcp_length_lo = plcp_length & 0xff; 1024 1025 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1026 desc->plcp_signal |= 0x08; 1027 } 1028} 1029 1030static int 1031rum_sendprot(struct rum_softc *sc, 1032 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1033{ 1034 struct ieee80211com *ic = ni->ni_ic; 1035 const struct ieee80211_frame *wh; 1036 struct rum_tx_data *data; 1037 struct mbuf *mprot; 1038 int protrate, ackrate, pktlen, flags, isshort; 1039 uint16_t dur; 1040 1041 RUM_LOCK_ASSERT(sc, MA_OWNED); 1042 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1043 ("protection %d", prot)); 1044 1045 wh = mtod(m, const struct ieee80211_frame *); 1046 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1047 1048 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1049 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1050 1051 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1052 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort); 1053 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1054 flags = RT2573_TX_MORE_FRAG; 1055 if (prot == IEEE80211_PROT_RTSCTS) { 1056 /* NB: CTS is the same size as an ACK */ 1057 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1058 flags |= RT2573_TX_NEED_ACK; 1059 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1060 } else { 1061 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1062 } 1063 if (mprot == NULL) { 1064 /* XXX stat + msg */ 1065 return (ENOBUFS); 1066 } 1067 data = STAILQ_FIRST(&sc->tx_free); 1068 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1069 sc->tx_nfree--; 1070 1071 data->m = mprot; 1072 data->ni = ieee80211_ref_node(ni); 1073 data->rate = protrate; 1074 rum_setup_tx_desc(sc, &data->desc, flags, 0, mprot->m_pkthdr.len, protrate); 1075 1076 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1077 usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]); 1078 1079 return 0; 1080} 1081 1082static int 1083rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1084{ 1085 struct ieee80211vap *vap = ni->ni_vap; 1086 struct ifnet *ifp = sc->sc_ifp; 1087 struct ieee80211com *ic = ifp->if_l2com; 1088 struct rum_tx_data *data; 1089 struct ieee80211_frame *wh; 1090 const struct ieee80211_txparam *tp; 1091 struct ieee80211_key *k; 1092 uint32_t flags = 0; 1093 uint16_t dur; 1094 1095 RUM_LOCK_ASSERT(sc, MA_OWNED); 1096 1097 data = STAILQ_FIRST(&sc->tx_free); 1098 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1099 sc->tx_nfree--; 1100 1101 wh = mtod(m0, struct ieee80211_frame *); 1102 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1103 k = ieee80211_crypto_encap(ni, m0); 1104 if (k == NULL) { 1105 m_freem(m0); 1106 return ENOBUFS; 1107 } 1108 wh = mtod(m0, struct ieee80211_frame *); 1109 } 1110 1111 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)]; 1112 1113 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1114 flags |= RT2573_TX_NEED_ACK; 1115 1116 dur = ieee80211_ack_duration(ic->ic_rt, tp->mgmtrate, 1117 ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1118 *(uint16_t *)wh->i_dur = htole16(dur); 1119 1120 /* tell hardware to add timestamp for probe responses */ 1121 if ((wh->i_fc[0] & 1122 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1123 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1124 flags |= RT2573_TX_TIMESTAMP; 1125 } 1126 1127 data->m = m0; 1128 data->ni = ni; 1129 data->rate = tp->mgmtrate; 1130 1131 rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, tp->mgmtrate); 1132 1133 DPRINTFN(10, "sending mgt frame len=%d rate=%d\n", 1134 m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, tp->mgmtrate); 1135 1136 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1137 usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]); 1138 1139 return (0); 1140} 1141 1142static int 1143rum_tx_raw(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni, 1144 const struct ieee80211_bpf_params *params) 1145{ 1146 struct ieee80211com *ic = ni->ni_ic; 1147 struct rum_tx_data *data; 1148 uint32_t flags; 1149 int rate, error; 1150 1151 RUM_LOCK_ASSERT(sc, MA_OWNED); 1152 KASSERT(params != NULL, ("no raw xmit params")); 1153 1154 rate = params->ibp_rate0; 1155 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1156 m_freem(m0); 1157 return EINVAL; 1158 } 1159 flags = 0; 1160 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1161 flags |= RT2573_TX_NEED_ACK; 1162 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1163 error = rum_sendprot(sc, m0, ni, 1164 params->ibp_flags & IEEE80211_BPF_RTS ? 1165 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1166 rate); 1167 if (error || sc->tx_nfree == 0) { 1168 m_freem(m0); 1169 return ENOBUFS; 1170 } 1171 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1172 } 1173 1174 data = STAILQ_FIRST(&sc->tx_free); 1175 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1176 sc->tx_nfree--; 1177 1178 data->m = m0; 1179 data->ni = ni; 1180 data->rate = rate; 1181 1182 /* XXX need to setup descriptor ourself */ 1183 rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate); 1184 1185 DPRINTFN(10, "sending raw frame len=%u rate=%u\n", 1186 m0->m_pkthdr.len, rate); 1187 1188 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1189 usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]); 1190 1191 return 0; 1192} 1193 1194static int 1195rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1196{ 1197 struct ieee80211vap *vap = ni->ni_vap; 1198 struct ifnet *ifp = sc->sc_ifp; 1199 struct ieee80211com *ic = ifp->if_l2com; 1200 struct rum_tx_data *data; 1201 struct ieee80211_frame *wh; 1202 const struct ieee80211_txparam *tp; 1203 struct ieee80211_key *k; 1204 uint32_t flags = 0; 1205 uint16_t dur; 1206 int error, rate; 1207 1208 RUM_LOCK_ASSERT(sc, MA_OWNED); 1209 1210 wh = mtod(m0, struct ieee80211_frame *); 1211 1212 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1213 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1214 rate = tp->mcastrate; 1215 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 1216 rate = tp->ucastrate; 1217 else 1218 rate = ni->ni_txrate; 1219 1220 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1221 k = ieee80211_crypto_encap(ni, m0); 1222 if (k == NULL) { 1223 m_freem(m0); 1224 return ENOBUFS; 1225 } 1226 1227 /* packet header may have moved, reset our local pointer */ 1228 wh = mtod(m0, struct ieee80211_frame *); 1229 } 1230 1231 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1232 int prot = IEEE80211_PROT_NONE; 1233 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1234 prot = IEEE80211_PROT_RTSCTS; 1235 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1236 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1237 prot = ic->ic_protmode; 1238 if (prot != IEEE80211_PROT_NONE) { 1239 error = rum_sendprot(sc, m0, ni, prot, rate); 1240 if (error || sc->tx_nfree == 0) { 1241 m_freem(m0); 1242 return ENOBUFS; 1243 } 1244 flags |= RT2573_TX_LONG_RETRY | RT2573_TX_IFS_SIFS; 1245 } 1246 } 1247 1248 data = STAILQ_FIRST(&sc->tx_free); 1249 STAILQ_REMOVE_HEAD(&sc->tx_free, next); 1250 sc->tx_nfree--; 1251 1252 data->m = m0; 1253 data->ni = ni; 1254 data->rate = rate; 1255 1256 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1257 flags |= RT2573_TX_NEED_ACK; 1258 flags |= RT2573_TX_MORE_FRAG; 1259 1260 dur = ieee80211_ack_duration(ic->ic_rt, rate, 1261 ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1262 *(uint16_t *)wh->i_dur = htole16(dur); 1263 } 1264 1265 rum_setup_tx_desc(sc, &data->desc, flags, 0, m0->m_pkthdr.len, rate); 1266 1267 DPRINTFN(10, "sending frame len=%d rate=%d\n", 1268 m0->m_pkthdr.len + (int)RT2573_TX_DESC_SIZE, rate); 1269 1270 STAILQ_INSERT_TAIL(&sc->tx_q, data, next); 1271 usbd_transfer_start(sc->sc_xfer[RUM_BULK_WR]); 1272 1273 return 0; 1274} 1275 1276static void 1277rum_start(struct ifnet *ifp) 1278{ 1279 struct rum_softc *sc = ifp->if_softc; 1280 struct ieee80211_node *ni; 1281 struct mbuf *m; 1282 1283 RUM_LOCK(sc); 1284 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1285 RUM_UNLOCK(sc); 1286 return; 1287 } 1288 for (;;) { 1289 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1290 if (m == NULL) 1291 break; 1292 if (sc->tx_nfree < RUM_TX_MINFREE) { 1293 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1294 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1295 break; 1296 } 1297 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1298 if (rum_tx_data(sc, m, ni) != 0) { 1299 ieee80211_free_node(ni); 1300 ifp->if_oerrors++; 1301 break; 1302 } 1303 } 1304 RUM_UNLOCK(sc); 1305} 1306 1307static int 1308rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1309{ 1310 struct rum_softc *sc = ifp->if_softc; 1311 struct ieee80211com *ic = ifp->if_l2com; 1312 struct ifreq *ifr = (struct ifreq *) data; 1313 int error = 0, startall = 0; 1314 1315 switch (cmd) { 1316 case SIOCSIFFLAGS: 1317 RUM_LOCK(sc); 1318 if (ifp->if_flags & IFF_UP) { 1319 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1320 rum_init_locked(sc); 1321 startall = 1; 1322 } else 1323 rum_setpromisc(sc); 1324 } else { 1325 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1326 rum_stop(sc); 1327 } 1328 RUM_UNLOCK(sc); 1329 if (startall) 1330 ieee80211_start_all(ic); 1331 break; 1332 case SIOCGIFMEDIA: 1333 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1334 break; 1335 case SIOCGIFADDR: 1336 error = ether_ioctl(ifp, cmd, data); 1337 break; 1338 default: 1339 error = EINVAL; 1340 break; 1341 } 1342 return error; 1343} 1344 1345static void 1346rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1347{ 1348 struct usb_device_request req; 1349 usb_error_t error; 1350 1351 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1352 req.bRequest = RT2573_READ_EEPROM; 1353 USETW(req.wValue, 0); 1354 USETW(req.wIndex, addr); 1355 USETW(req.wLength, len); 1356 1357 error = rum_do_request(sc, &req, buf); 1358 if (error != 0) { 1359 device_printf(sc->sc_dev, "could not read EEPROM: %s\n", 1360 usbd_errstr(error)); 1361 } 1362} 1363 1364static uint32_t 1365rum_read(struct rum_softc *sc, uint16_t reg) 1366{ 1367 uint32_t val; 1368 1369 rum_read_multi(sc, reg, &val, sizeof val); 1370 1371 return le32toh(val); 1372} 1373 1374static void 1375rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1376{ 1377 struct usb_device_request req; 1378 usb_error_t error; 1379 1380 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1381 req.bRequest = RT2573_READ_MULTI_MAC; 1382 USETW(req.wValue, 0); 1383 USETW(req.wIndex, reg); 1384 USETW(req.wLength, len); 1385 1386 error = rum_do_request(sc, &req, buf); 1387 if (error != 0) { 1388 device_printf(sc->sc_dev, 1389 "could not multi read MAC register: %s\n", 1390 usbd_errstr(error)); 1391 } 1392} 1393 1394static usb_error_t 1395rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1396{ 1397 uint32_t tmp = htole32(val); 1398 1399 return (rum_write_multi(sc, reg, &tmp, sizeof tmp)); 1400} 1401 1402static usb_error_t 1403rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1404{ 1405 struct usb_device_request req; 1406 usb_error_t error; 1407 1408 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1409 req.bRequest = RT2573_WRITE_MULTI_MAC; 1410 USETW(req.wValue, 0); 1411 USETW(req.wIndex, reg); 1412 USETW(req.wLength, len); 1413 1414 error = rum_do_request(sc, &req, buf); 1415 if (error != 0) { 1416 device_printf(sc->sc_dev, 1417 "could not multi write MAC register: %s\n", 1418 usbd_errstr(error)); 1419 } 1420 return (error); 1421} 1422 1423static void 1424rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1425{ 1426 uint32_t tmp; 1427 int ntries; 1428 1429 DPRINTFN(2, "reg=0x%08x\n", reg); 1430 1431 for (ntries = 0; ntries < 100; ntries++) { 1432 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1433 break; 1434 if (rum_pause(sc, hz / 100)) 1435 break; 1436 } 1437 if (ntries == 100) { 1438 device_printf(sc->sc_dev, "could not write to BBP\n"); 1439 return; 1440 } 1441 1442 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1443 rum_write(sc, RT2573_PHY_CSR3, tmp); 1444} 1445 1446static uint8_t 1447rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1448{ 1449 uint32_t val; 1450 int ntries; 1451 1452 DPRINTFN(2, "reg=0x%08x\n", reg); 1453 1454 for (ntries = 0; ntries < 100; ntries++) { 1455 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1456 break; 1457 if (rum_pause(sc, hz / 100)) 1458 break; 1459 } 1460 if (ntries == 100) { 1461 device_printf(sc->sc_dev, "could not read BBP\n"); 1462 return 0; 1463 } 1464 1465 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1466 rum_write(sc, RT2573_PHY_CSR3, val); 1467 1468 for (ntries = 0; ntries < 100; ntries++) { 1469 val = rum_read(sc, RT2573_PHY_CSR3); 1470 if (!(val & RT2573_BBP_BUSY)) 1471 return val & 0xff; 1472 if (rum_pause(sc, hz / 100)) 1473 break; 1474 } 1475 1476 device_printf(sc->sc_dev, "could not read BBP\n"); 1477 return 0; 1478} 1479 1480static void 1481rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1482{ 1483 uint32_t tmp; 1484 int ntries; 1485 1486 for (ntries = 0; ntries < 100; ntries++) { 1487 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1488 break; 1489 if (rum_pause(sc, hz / 100)) 1490 break; 1491 } 1492 if (ntries == 100) { 1493 device_printf(sc->sc_dev, "could not write to RF\n"); 1494 return; 1495 } 1496 1497 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1498 (reg & 3); 1499 rum_write(sc, RT2573_PHY_CSR4, tmp); 1500 1501 /* remember last written value in sc */ 1502 sc->rf_regs[reg] = val; 1503 1504 DPRINTFN(15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff); 1505} 1506 1507static void 1508rum_select_antenna(struct rum_softc *sc) 1509{ 1510 uint8_t bbp4, bbp77; 1511 uint32_t tmp; 1512 1513 bbp4 = rum_bbp_read(sc, 4); 1514 bbp77 = rum_bbp_read(sc, 77); 1515 1516 /* TBD */ 1517 1518 /* make sure Rx is disabled before switching antenna */ 1519 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1520 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1521 1522 rum_bbp_write(sc, 4, bbp4); 1523 rum_bbp_write(sc, 77, bbp77); 1524 1525 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1526} 1527 1528/* 1529 * Enable multi-rate retries for frames sent at OFDM rates. 1530 * In 802.11b/g mode, allow fallback to CCK rates. 1531 */ 1532static void 1533rum_enable_mrr(struct rum_softc *sc) 1534{ 1535 struct ifnet *ifp = sc->sc_ifp; 1536 struct ieee80211com *ic = ifp->if_l2com; 1537 uint32_t tmp; 1538 1539 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1540 1541 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1542 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) 1543 tmp |= RT2573_MRR_CCK_FALLBACK; 1544 tmp |= RT2573_MRR_ENABLED; 1545 1546 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1547} 1548 1549static void 1550rum_set_txpreamble(struct rum_softc *sc) 1551{ 1552 struct ifnet *ifp = sc->sc_ifp; 1553 struct ieee80211com *ic = ifp->if_l2com; 1554 uint32_t tmp; 1555 1556 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1557 1558 tmp &= ~RT2573_SHORT_PREAMBLE; 1559 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1560 tmp |= RT2573_SHORT_PREAMBLE; 1561 1562 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1563} 1564 1565static void 1566rum_set_basicrates(struct rum_softc *sc) 1567{ 1568 struct ifnet *ifp = sc->sc_ifp; 1569 struct ieee80211com *ic = ifp->if_l2com; 1570 1571 /* update basic rate set */ 1572 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1573 /* 11b basic rates: 1, 2Mbps */ 1574 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1575 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) { 1576 /* 11a basic rates: 6, 12, 24Mbps */ 1577 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1578 } else { 1579 /* 11b/g basic rates: 1, 2, 5.5, 11Mbps */ 1580 rum_write(sc, RT2573_TXRX_CSR5, 0xf); 1581 } 1582} 1583 1584/* 1585 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1586 * driver. 1587 */ 1588static void 1589rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1590{ 1591 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1592 uint32_t tmp; 1593 1594 /* update all BBP registers that depend on the band */ 1595 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1596 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1597 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1598 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1599 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1600 } 1601 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1602 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1603 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1604 } 1605 1606 sc->bbp17 = bbp17; 1607 rum_bbp_write(sc, 17, bbp17); 1608 rum_bbp_write(sc, 96, bbp96); 1609 rum_bbp_write(sc, 104, bbp104); 1610 1611 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1612 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1613 rum_bbp_write(sc, 75, 0x80); 1614 rum_bbp_write(sc, 86, 0x80); 1615 rum_bbp_write(sc, 88, 0x80); 1616 } 1617 1618 rum_bbp_write(sc, 35, bbp35); 1619 rum_bbp_write(sc, 97, bbp97); 1620 rum_bbp_write(sc, 98, bbp98); 1621 1622 tmp = rum_read(sc, RT2573_PHY_CSR0); 1623 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1624 if (IEEE80211_IS_CHAN_2GHZ(c)) 1625 tmp |= RT2573_PA_PE_2GHZ; 1626 else 1627 tmp |= RT2573_PA_PE_5GHZ; 1628 rum_write(sc, RT2573_PHY_CSR0, tmp); 1629} 1630 1631static void 1632rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1633{ 1634 struct ifnet *ifp = sc->sc_ifp; 1635 struct ieee80211com *ic = ifp->if_l2com; 1636 const struct rfprog *rfprog; 1637 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1638 int8_t power; 1639 int i, chan; 1640 1641 chan = ieee80211_chan2ieee(ic, c); 1642 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1643 return; 1644 1645 /* select the appropriate RF settings based on what EEPROM says */ 1646 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1647 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1648 1649 /* find the settings for this channel (we know it exists) */ 1650 for (i = 0; rfprog[i].chan != chan; i++); 1651 1652 power = sc->txpow[i]; 1653 if (power < 0) { 1654 bbp94 += power; 1655 power = 0; 1656 } else if (power > 31) { 1657 bbp94 += power - 31; 1658 power = 31; 1659 } 1660 1661 /* 1662 * If we are switching from the 2GHz band to the 5GHz band or 1663 * vice-versa, BBP registers need to be reprogrammed. 1664 */ 1665 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1666 rum_select_band(sc, c); 1667 rum_select_antenna(sc); 1668 } 1669 ic->ic_curchan = c; 1670 1671 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1672 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1673 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1674 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1675 1676 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1677 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1678 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1679 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1680 1681 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1682 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1683 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1684 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1685 1686 rum_pause(sc, hz / 100); 1687 1688 /* enable smart mode for MIMO-capable RFs */ 1689 bbp3 = rum_bbp_read(sc, 3); 1690 1691 bbp3 &= ~RT2573_SMART_MODE; 1692 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1693 bbp3 |= RT2573_SMART_MODE; 1694 1695 rum_bbp_write(sc, 3, bbp3); 1696 1697 if (bbp94 != RT2573_BBPR94_DEFAULT) 1698 rum_bbp_write(sc, 94, bbp94); 1699 1700 /* give the chip some extra time to do the switchover */ 1701 rum_pause(sc, hz / 100); 1702} 1703 1704/* 1705 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1706 * and HostAP operating modes. 1707 */ 1708static void 1709rum_enable_tsf_sync(struct rum_softc *sc) 1710{ 1711 struct ifnet *ifp = sc->sc_ifp; 1712 struct ieee80211com *ic = ifp->if_l2com; 1713 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1714 uint32_t tmp; 1715 1716 if (vap->iv_opmode != IEEE80211_M_STA) { 1717 /* 1718 * Change default 16ms TBTT adjustment to 8ms. 1719 * Must be done before enabling beacon generation. 1720 */ 1721 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1722 } 1723 1724 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1725 1726 /* set beacon interval (in 1/16ms unit) */ 1727 tmp |= vap->iv_bss->ni_intval * 16; 1728 1729 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1730 if (vap->iv_opmode == IEEE80211_M_STA) 1731 tmp |= RT2573_TSF_MODE(1); 1732 else 1733 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1734 1735 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1736} 1737 1738static void 1739rum_enable_tsf(struct rum_softc *sc) 1740{ 1741 rum_write(sc, RT2573_TXRX_CSR9, 1742 (rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000) | 1743 RT2573_TSF_TICKING | RT2573_TSF_MODE(2)); 1744} 1745 1746static void 1747rum_update_slot(struct ifnet *ifp) 1748{ 1749 struct rum_softc *sc = ifp->if_softc; 1750 struct ieee80211com *ic = ifp->if_l2com; 1751 uint8_t slottime; 1752 uint32_t tmp; 1753 1754 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1755 1756 tmp = rum_read(sc, RT2573_MAC_CSR9); 1757 tmp = (tmp & ~0xff) | slottime; 1758 rum_write(sc, RT2573_MAC_CSR9, tmp); 1759 1760 DPRINTF("setting slot time to %uus\n", slottime); 1761} 1762 1763static void 1764rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1765{ 1766 uint32_t tmp; 1767 1768 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1769 rum_write(sc, RT2573_MAC_CSR4, tmp); 1770 1771 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1772 rum_write(sc, RT2573_MAC_CSR5, tmp); 1773} 1774 1775static void 1776rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1777{ 1778 uint32_t tmp; 1779 1780 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1781 rum_write(sc, RT2573_MAC_CSR2, tmp); 1782 1783 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1784 rum_write(sc, RT2573_MAC_CSR3, tmp); 1785} 1786 1787static void 1788rum_setpromisc(struct rum_softc *sc) 1789{ 1790 struct ifnet *ifp = sc->sc_ifp; 1791 uint32_t tmp; 1792 1793 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1794 1795 tmp &= ~RT2573_DROP_NOT_TO_ME; 1796 if (!(ifp->if_flags & IFF_PROMISC)) 1797 tmp |= RT2573_DROP_NOT_TO_ME; 1798 1799 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1800 1801 DPRINTF("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1802 "entering" : "leaving"); 1803} 1804 1805static void 1806rum_update_promisc(struct ifnet *ifp) 1807{ 1808 struct rum_softc *sc = ifp->if_softc; 1809 1810 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1811 return; 1812 1813 RUM_LOCK(sc); 1814 rum_setpromisc(sc); 1815 RUM_UNLOCK(sc); 1816} 1817 1818static const char * 1819rum_get_rf(int rev) 1820{ 1821 switch (rev) { 1822 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1823 case RT2573_RF_2528: return "RT2528"; 1824 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1825 case RT2573_RF_5226: return "RT5226"; 1826 default: return "unknown"; 1827 } 1828} 1829 1830static void 1831rum_read_eeprom(struct rum_softc *sc) 1832{ 1833 uint16_t val; 1834#ifdef RUM_DEBUG 1835 int i; 1836#endif 1837 1838 /* read MAC address */ 1839 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, sc->sc_bssid, 6); 1840 1841 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1842 val = le16toh(val); 1843 sc->rf_rev = (val >> 11) & 0x1f; 1844 sc->hw_radio = (val >> 10) & 0x1; 1845 sc->rx_ant = (val >> 4) & 0x3; 1846 sc->tx_ant = (val >> 2) & 0x3; 1847 sc->nb_ant = val & 0x3; 1848 1849 DPRINTF("RF revision=%d\n", sc->rf_rev); 1850 1851 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1852 val = le16toh(val); 1853 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1854 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1855 1856 DPRINTF("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1857 sc->ext_2ghz_lna, sc->ext_5ghz_lna); 1858 1859 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1860 val = le16toh(val); 1861 if ((val & 0xff) != 0xff) 1862 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1863 1864 /* Only [-10, 10] is valid */ 1865 if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10) 1866 sc->rssi_2ghz_corr = 0; 1867 1868 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1869 val = le16toh(val); 1870 if ((val & 0xff) != 0xff) 1871 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1872 1873 /* Only [-10, 10] is valid */ 1874 if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10) 1875 sc->rssi_5ghz_corr = 0; 1876 1877 if (sc->ext_2ghz_lna) 1878 sc->rssi_2ghz_corr -= 14; 1879 if (sc->ext_5ghz_lna) 1880 sc->rssi_5ghz_corr -= 14; 1881 1882 DPRINTF("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1883 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr); 1884 1885 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1886 val = le16toh(val); 1887 if ((val & 0xff) != 0xff) 1888 sc->rffreq = val & 0xff; 1889 1890 DPRINTF("RF freq=%d\n", sc->rffreq); 1891 1892 /* read Tx power for all a/b/g channels */ 1893 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1894 /* XXX default Tx power for 802.11a channels */ 1895 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1896#ifdef RUM_DEBUG 1897 for (i = 0; i < 14; i++) 1898 DPRINTF("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i]); 1899#endif 1900 1901 /* read default values for BBP registers */ 1902 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1903#ifdef RUM_DEBUG 1904 for (i = 0; i < 14; i++) { 1905 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1906 continue; 1907 DPRINTF("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1908 sc->bbp_prom[i].val); 1909 } 1910#endif 1911} 1912 1913static int 1914rum_bbp_init(struct rum_softc *sc) 1915{ 1916#define N(a) (sizeof (a) / sizeof ((a)[0])) 1917 int i, ntries; 1918 1919 /* wait for BBP to be ready */ 1920 for (ntries = 0; ntries < 100; ntries++) { 1921 const uint8_t val = rum_bbp_read(sc, 0); 1922 if (val != 0 && val != 0xff) 1923 break; 1924 if (rum_pause(sc, hz / 100)) 1925 break; 1926 } 1927 if (ntries == 100) { 1928 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 1929 return EIO; 1930 } 1931 1932 /* initialize BBP registers to default values */ 1933 for (i = 0; i < N(rum_def_bbp); i++) 1934 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1935 1936 /* write vendor-specific BBP values (from EEPROM) */ 1937 for (i = 0; i < 16; i++) { 1938 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1939 continue; 1940 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1941 } 1942 1943 return 0; 1944#undef N 1945} 1946 1947static void 1948rum_init_locked(struct rum_softc *sc) 1949{ 1950#define N(a) (sizeof (a) / sizeof ((a)[0])) 1951 struct ifnet *ifp = sc->sc_ifp; 1952 struct ieee80211com *ic = ifp->if_l2com; 1953 uint32_t tmp; 1954 usb_error_t error; 1955 int i, ntries; 1956 1957 RUM_LOCK_ASSERT(sc, MA_OWNED); 1958 1959 rum_stop(sc); 1960 1961 /* initialize MAC registers to default values */ 1962 for (i = 0; i < N(rum_def_mac); i++) 1963 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1964 1965 /* set host ready */ 1966 rum_write(sc, RT2573_MAC_CSR1, 3); 1967 rum_write(sc, RT2573_MAC_CSR1, 0); 1968 1969 /* wait for BBP/RF to wakeup */ 1970 for (ntries = 0; ntries < 100; ntries++) { 1971 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1972 break; 1973 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1974 if (rum_pause(sc, hz / 100)) 1975 break; 1976 } 1977 if (ntries == 100) { 1978 device_printf(sc->sc_dev, 1979 "timeout waiting for BBP/RF to wakeup\n"); 1980 goto fail; 1981 } 1982 1983 if ((error = rum_bbp_init(sc)) != 0) 1984 goto fail; 1985 1986 /* select default channel */ 1987 rum_select_band(sc, ic->ic_curchan); 1988 rum_select_antenna(sc); 1989 rum_set_chan(sc, ic->ic_curchan); 1990 1991 /* clear STA registers */ 1992 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1993 1994 rum_set_macaddr(sc, IF_LLADDR(ifp)); 1995 1996 /* initialize ASIC */ 1997 rum_write(sc, RT2573_MAC_CSR1, 4); 1998 1999 /* 2000 * Allocate Tx and Rx xfer queues. 2001 */ 2002 rum_setup_tx_list(sc); 2003 2004 /* update Rx filter */ 2005 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2006 2007 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2008 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2009 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2010 RT2573_DROP_ACKCTS; 2011 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2012 tmp |= RT2573_DROP_TODS; 2013 if (!(ifp->if_flags & IFF_PROMISC)) 2014 tmp |= RT2573_DROP_NOT_TO_ME; 2015 } 2016 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2017 2018 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2019 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2020 usbd_xfer_set_stall(sc->sc_xfer[RUM_BULK_WR]); 2021 usbd_transfer_start(sc->sc_xfer[RUM_BULK_RD]); 2022 return; 2023 2024fail: rum_stop(sc); 2025#undef N 2026} 2027 2028static void 2029rum_init(void *priv) 2030{ 2031 struct rum_softc *sc = priv; 2032 struct ifnet *ifp = sc->sc_ifp; 2033 struct ieee80211com *ic = ifp->if_l2com; 2034 2035 RUM_LOCK(sc); 2036 rum_init_locked(sc); 2037 RUM_UNLOCK(sc); 2038 2039 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2040 ieee80211_start_all(ic); /* start all vap's */ 2041} 2042 2043static void 2044rum_stop(struct rum_softc *sc) 2045{ 2046 struct ifnet *ifp = sc->sc_ifp; 2047 uint32_t tmp; 2048 2049 RUM_LOCK_ASSERT(sc, MA_OWNED); 2050 2051 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2052 2053 RUM_UNLOCK(sc); 2054 2055 /* 2056 * Drain the USB transfers, if not already drained: 2057 */ 2058 usbd_transfer_drain(sc->sc_xfer[RUM_BULK_WR]); 2059 usbd_transfer_drain(sc->sc_xfer[RUM_BULK_RD]); 2060 2061 RUM_LOCK(sc); 2062 2063 rum_unsetup_tx_list(sc); 2064 2065 /* disable Rx */ 2066 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2067 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2068 2069 /* reset ASIC */ 2070 rum_write(sc, RT2573_MAC_CSR1, 3); 2071 rum_write(sc, RT2573_MAC_CSR1, 0); 2072} 2073 2074static void 2075rum_load_microcode(struct rum_softc *sc, const uint8_t *ucode, size_t size) 2076{ 2077 struct usb_device_request req; 2078 uint16_t reg = RT2573_MCU_CODE_BASE; 2079 usb_error_t err; 2080 2081 /* copy firmware image into NIC */ 2082 for (; size >= 4; reg += 4, ucode += 4, size -= 4) { 2083 err = rum_write(sc, reg, UGETDW(ucode)); 2084 if (err) { 2085 /* firmware already loaded ? */ 2086 device_printf(sc->sc_dev, "Firmware load " 2087 "failure! (ignored)\n"); 2088 break; 2089 } 2090 } 2091 2092 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2093 req.bRequest = RT2573_MCU_CNTL; 2094 USETW(req.wValue, RT2573_MCU_RUN); 2095 USETW(req.wIndex, 0); 2096 USETW(req.wLength, 0); 2097 2098 err = rum_do_request(sc, &req, NULL); 2099 if (err != 0) { 2100 device_printf(sc->sc_dev, "could not run firmware: %s\n", 2101 usbd_errstr(err)); 2102 } 2103 2104 /* give the chip some time to boot */ 2105 rum_pause(sc, hz / 8); 2106} 2107 2108static int 2109rum_prepare_beacon(struct rum_softc *sc, struct ieee80211vap *vap) 2110{ 2111 struct ieee80211com *ic = vap->iv_ic; 2112 const struct ieee80211_txparam *tp; 2113 struct rum_tx_desc desc; 2114 struct mbuf *m0; 2115 2116 m0 = ieee80211_beacon_alloc(vap->iv_bss, &RUM_VAP(vap)->bo); 2117 if (m0 == NULL) { 2118 return ENOBUFS; 2119 } 2120 2121 tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_bsschan)]; 2122 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2123 m0->m_pkthdr.len, tp->mgmtrate); 2124 2125 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2126 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2127 2128 /* copy beacon header and payload into NIC memory */ 2129 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2130 m0->m_pkthdr.len); 2131 2132 m_freem(m0); 2133 2134 return 0; 2135} 2136 2137static int 2138rum_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2139 const struct ieee80211_bpf_params *params) 2140{ 2141 struct ifnet *ifp = ni->ni_ic->ic_ifp; 2142 struct rum_softc *sc = ifp->if_softc; 2143 2144 RUM_LOCK(sc); 2145 /* prevent management frames from being sent if we're not ready */ 2146 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2147 RUM_UNLOCK(sc); 2148 m_freem(m); 2149 ieee80211_free_node(ni); 2150 return ENETDOWN; 2151 } 2152 if (sc->tx_nfree < RUM_TX_MINFREE) { 2153 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2154 RUM_UNLOCK(sc); 2155 m_freem(m); 2156 ieee80211_free_node(ni); 2157 return EIO; 2158 } 2159 2160 ifp->if_opackets++; 2161 2162 if (params == NULL) { 2163 /* 2164 * Legacy path; interpret frame contents to decide 2165 * precisely how to send the frame. 2166 */ 2167 if (rum_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 (rum_tx_raw(sc, m, ni, params) != 0) 2175 goto bad; 2176 } 2177 RUM_UNLOCK(sc); 2178 2179 return 0; 2180bad: 2181 ifp->if_oerrors++; 2182 RUM_UNLOCK(sc); 2183 ieee80211_free_node(ni); 2184 return EIO; 2185} 2186 2187static void 2188rum_ratectl_start(struct rum_softc *sc, struct ieee80211_node *ni) 2189{ 2190 struct ieee80211vap *vap = ni->ni_vap; 2191 struct rum_vap *rvp = RUM_VAP(vap); 2192 2193 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2194 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2195 2196 ieee80211_ratectl_node_init(ni); 2197 2198 usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp); 2199} 2200 2201static void 2202rum_ratectl_timeout(void *arg) 2203{ 2204 struct rum_vap *rvp = arg; 2205 struct ieee80211vap *vap = &rvp->vap; 2206 struct ieee80211com *ic = vap->iv_ic; 2207 2208 ieee80211_runtask(ic, &rvp->ratectl_task); 2209} 2210 2211static void 2212rum_ratectl_task(void *arg, int pending) 2213{ 2214 struct rum_vap *rvp = arg; 2215 struct ieee80211vap *vap = &rvp->vap; 2216 struct ieee80211com *ic = vap->iv_ic; 2217 struct ifnet *ifp = ic->ic_ifp; 2218 struct rum_softc *sc = ifp->if_softc; 2219 struct ieee80211_node *ni = vap->iv_bss; 2220 int ok, fail; 2221 int sum, retrycnt; 2222 2223 RUM_LOCK(sc); 2224 /* read and clear statistic registers (STA_CSR0 to STA_CSR10) */ 2225 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof(sc->sta)); 2226 2227 ok = (le32toh(sc->sta[4]) >> 16) + /* TX ok w/o retry */ 2228 (le32toh(sc->sta[5]) & 0xffff); /* TX ok w/ retry */ 2229 fail = (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2230 sum = ok+fail; 2231 retrycnt = (le32toh(sc->sta[5]) & 0xffff) + fail; 2232 2233 ieee80211_ratectl_tx_update(vap, ni, &sum, &ok, &retrycnt); 2234 (void) ieee80211_ratectl_rate(ni, NULL, 0); 2235 2236 ifp->if_oerrors += fail; /* count TX retry-fail as Tx errors */ 2237 2238 usb_callout_reset(&rvp->ratectl_ch, hz, rum_ratectl_timeout, rvp); 2239 RUM_UNLOCK(sc); 2240} 2241 2242static void 2243rum_scan_start(struct ieee80211com *ic) 2244{ 2245 struct ifnet *ifp = ic->ic_ifp; 2246 struct rum_softc *sc = ifp->if_softc; 2247 uint32_t tmp; 2248 2249 RUM_LOCK(sc); 2250 /* abort TSF synchronization */ 2251 tmp = rum_read(sc, RT2573_TXRX_CSR9); 2252 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 2253 rum_set_bssid(sc, ifp->if_broadcastaddr); 2254 RUM_UNLOCK(sc); 2255 2256} 2257 2258static void 2259rum_scan_end(struct ieee80211com *ic) 2260{ 2261 struct rum_softc *sc = ic->ic_ifp->if_softc; 2262 2263 RUM_LOCK(sc); 2264 rum_enable_tsf_sync(sc); 2265 rum_set_bssid(sc, sc->sc_bssid); 2266 RUM_UNLOCK(sc); 2267 2268} 2269 2270static void 2271rum_set_channel(struct ieee80211com *ic) 2272{ 2273 struct rum_softc *sc = ic->ic_ifp->if_softc; 2274 2275 RUM_LOCK(sc); 2276 rum_set_chan(sc, ic->ic_curchan); 2277 RUM_UNLOCK(sc); 2278} 2279 2280static int 2281rum_get_rssi(struct rum_softc *sc, uint8_t raw) 2282{ 2283 struct ifnet *ifp = sc->sc_ifp; 2284 struct ieee80211com *ic = ifp->if_l2com; 2285 int lna, agc, rssi; 2286 2287 lna = (raw >> 5) & 0x3; 2288 agc = raw & 0x1f; 2289 2290 if (lna == 0) { 2291 /* 2292 * No RSSI mapping 2293 * 2294 * NB: Since RSSI is relative to noise floor, -1 is 2295 * adequate for caller to know error happened. 2296 */ 2297 return -1; 2298 } 2299 2300 rssi = (2 * agc) - RT2573_NOISE_FLOOR; 2301 2302 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2303 rssi += sc->rssi_2ghz_corr; 2304 2305 if (lna == 1) 2306 rssi -= 64; 2307 else if (lna == 2) 2308 rssi -= 74; 2309 else if (lna == 3) 2310 rssi -= 90; 2311 } else { 2312 rssi += sc->rssi_5ghz_corr; 2313 2314 if (!sc->ext_5ghz_lna && lna != 1) 2315 rssi += 4; 2316 2317 if (lna == 1) 2318 rssi -= 64; 2319 else if (lna == 2) 2320 rssi -= 86; 2321 else if (lna == 3) 2322 rssi -= 100; 2323 } 2324 return rssi; 2325} 2326 2327static int 2328rum_pause(struct rum_softc *sc, int timeout) 2329{ 2330 2331 usb_pause_mtx(&sc->sc_mtx, timeout); 2332 return (0); 2333} 2334 2335static device_method_t rum_methods[] = { 2336 /* Device interface */ 2337 DEVMETHOD(device_probe, rum_match), 2338 DEVMETHOD(device_attach, rum_attach), 2339 DEVMETHOD(device_detach, rum_detach), 2340 2341 { 0, 0 } 2342}; 2343 2344static driver_t rum_driver = { 2345 .name = "rum", 2346 .methods = rum_methods, 2347 .size = sizeof(struct rum_softc), 2348}; 2349 2350static devclass_t rum_devclass; 2351 2352DRIVER_MODULE(rum, uhub, rum_driver, rum_devclass, NULL, 0); 2353