if_rum.c revision 1.6.4.5
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.6.4.5 2007/06/21 14:58:18 itohy Exp $ */ 3 4 /*- 5 * Copyright (c) 2005, 2006 Damien Bergamini <damien.bergamini (at) free.fr> 6 * Copyright (c) 2006 Niall O'Higgins <niallo (at) openbsd.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 /*- 22 * Ralink Technology RT2501USB/RT2601USB chipset driver 23 * http://www.ralinktech.com/ 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_rum.c,v 1.6.4.5 2007/06/21 14:58:18 itohy Exp $"); 28 29 #include "bpfilter.h" 30 31 #include <sys/param.h> 32 #include <sys/sockio.h> 33 #include <sys/sysctl.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/conf.h> 40 #include <sys/device.h> 41 42 #include <machine/bus.h> 43 #include <machine/endian.h> 44 #include <machine/intr.h> 45 46 #if NBPFILTER > 0 47 #include <net/bpf.h> 48 #endif 49 #include <net/if.h> 50 #include <net/if_arp.h> 51 #include <net/if_dl.h> 52 #include <net/if_ether.h> 53 #include <net/if_media.h> 54 #include <net/if_types.h> 55 56 #include <netinet/in.h> 57 #include <netinet/in_systm.h> 58 #include <netinet/in_var.h> 59 #include <netinet/ip.h> 60 61 #include <net80211/ieee80211_netbsd.h> 62 #include <net80211/ieee80211_var.h> 63 #include <net80211/ieee80211_amrr.h> 64 #include <net80211/ieee80211_radiotap.h> 65 66 #include <dev/firmload.h> 67 68 #include <dev/usb/usb.h> 69 #include <dev/usb/usbdi.h> 70 #include <dev/usb/usbdi_util.h> 71 #include <dev/usb/usbdevs.h> 72 #include <dev/usb/usb_ethersubr.h> 73 74 #include <dev/usb/if_rumreg.h> 75 #include <dev/usb/if_rumvar.h> 76 77 #ifdef USB_DEBUG 78 #define RUM_DEBUG 79 #endif 80 81 #ifdef RUM_DEBUG 82 #define DPRINTF(x) do { if (rum_debug) logprintf x; } while (0) 83 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) logprintf x; } while (0) 84 int rum_debug = 1; 85 #else 86 #define DPRINTF(x) 87 #define DPRINTFN(n, x) 88 #endif 89 90 /* various supported device vendors/products */ 91 static const struct usb_devno rum_devs[] = { 92 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_HWU54DM }, 93 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_2 }, 94 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_3 }, 95 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573_4 }, 96 { USB_VENDOR_AMIT, USB_PRODUCT_AMIT_CGWLUSB2GO }, 97 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 98 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_3 }, 99 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 100 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 101 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 102 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GR }, 103 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 104 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 105 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 106 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 107 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 108 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 109 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWI05GS }, 110 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 111 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 112 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254LB }, 113 { USB_VENDOR_GUILLEMOT, USB_PRODUCT_GUILLEMOT_HWGUSB254V2AP }, 114 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 115 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_G54HP }, 116 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 117 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 118 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 119 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 120 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_4 }, 121 { USB_VENDOR_NOVATECH, USB_PRODUCT_NOVATECH_RT2573 }, 122 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54HP }, 123 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 124 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 125 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 126 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 127 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 128 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 129 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 130 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 131 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 132 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 133 }; 134 135 Static int rum_attachhook(void *); 136 Static void rum_free_tx_list(struct rum_softc *); 137 Static void rum_free_rx_list(struct rum_softc *); 138 Static int rum_media_change(struct ifnet *); 139 Static void rum_next_scan(void *); 140 Static void rum_task(void *); 141 Static int rum_newstate(struct ieee80211com *, 142 enum ieee80211_state, int); 143 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 144 usbd_status); 145 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 146 usbd_status); 147 #if NBPFILTER > 0 148 Static uint8_t rum_rxrate(struct rum_rx_desc *); 149 #endif 150 Static int rum_ack_rate(struct ieee80211com *, int); 151 Static uint16_t rum_txtime(int, int, uint32_t); 152 Static uint8_t rum_plcp_signal(int); 153 Static void rum_setup_tx_desc(struct rum_softc *, 154 struct rum_tx_desc *, uint32_t, uint16_t, int, 155 int); 156 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 157 struct ieee80211_node *); 158 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 159 struct ieee80211_node *); 160 Static void rum_start(struct ifnet *); 161 Static void rum_watchdog(struct ifnet *); 162 Static int rum_ioctl(struct ifnet *, u_long, usb_ioctlarg_t); 163 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 164 int); 165 Static uint32_t rum_read(struct rum_softc *, uint16_t); 166 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 167 int); 168 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 169 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 170 size_t); 171 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 172 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 173 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 174 Static void rum_select_antenna(struct rum_softc *); 175 Static void rum_enable_mrr(struct rum_softc *); 176 Static void rum_set_txpreamble(struct rum_softc *); 177 Static void rum_set_basicrates(struct rum_softc *); 178 Static void rum_select_band(struct rum_softc *, 179 struct ieee80211_channel *); 180 Static void rum_set_chan(struct rum_softc *, 181 struct ieee80211_channel *); 182 Static void rum_enable_tsf_sync(struct rum_softc *); 183 Static void rum_update_slot(struct rum_softc *); 184 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 185 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 186 Static void rum_update_promisc(struct rum_softc *); 187 Static const char *rum_get_rf(int); 188 Static void rum_read_eeprom(struct rum_softc *); 189 Static int rum_bbp_init(struct rum_softc *); 190 Static int rum_init(struct ifnet *); 191 Static void rum_stop(struct ifnet *, int); 192 Static int rum_load_microcode(struct rum_softc *, const u_char *, 193 size_t); 194 Static int rum_prepare_beacon(struct rum_softc *); 195 Static void rum_amrr_start(struct rum_softc *, 196 struct ieee80211_node *); 197 Static void rum_amrr_timeout(void *); 198 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 199 usbd_status status); 200 201 /* 202 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 203 */ 204 static const struct ieee80211_rateset rum_rateset_11a = 205 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 206 207 static const struct ieee80211_rateset rum_rateset_11b = 208 { 4, { 2, 4, 11, 22 } }; 209 210 static const struct ieee80211_rateset rum_rateset_11g = 211 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 212 213 static const struct { 214 uint32_t reg; 215 uint32_t val; 216 } rum_def_mac[] = { 217 RT2573_DEF_MAC 218 }; 219 220 static const struct { 221 uint8_t reg; 222 uint8_t val; 223 } rum_def_bbp[] = { 224 RT2573_DEF_BBP 225 }; 226 227 static const struct rfprog { 228 uint8_t chan; 229 uint32_t r1, r2, r3, r4; 230 } rum_rf5226[] = { 231 RT2573_RF5226 232 }, rum_rf5225[] = { 233 RT2573_RF5225 234 }; 235 236 USB_DECLARE_DRIVER(rum); 237 238 USB_MATCH(rum) 239 { 240 USB_MATCH_START(rum, uaa); 241 242 #ifndef USB_USE_IFATTACH 243 if (uaa->iface != NULL) 244 return UMATCH_NONE; 245 #endif /* USB_USE_IFATTACH */ 246 247 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 248 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 249 } 250 251 Static int 252 rum_attachhook(void *xsc) 253 { 254 struct rum_softc *sc = xsc; 255 firmware_handle_t fwh; 256 const char *name = "rum-rt2573"; 257 u_char *ucode; 258 size_t size; 259 int error; 260 261 if ((error = firmware_open("rum", name, &fwh)) != 0) { 262 printf("%s: failed loadfirmware of file %s (error %d)\n", 263 USBDEVNAME(sc->sc_dev), name, error); 264 return error; 265 } 266 size = firmware_get_size(fwh); 267 ucode = firmware_malloc(size); 268 if (ucode == NULL) { 269 printf("%s: failed to allocate firmware memory\n", 270 USBDEVNAME(sc->sc_dev)); 271 firmware_close(fwh); 272 return ENOMEM;; 273 } 274 error = firmware_read(fwh, 0, ucode, size); 275 firmware_close(fwh); 276 if (error != 0) { 277 printf("%s: failed to read firmware (error %d)\n", 278 USBDEVNAME(sc->sc_dev), error); 279 firmware_free(ucode, 0); 280 return error; 281 } 282 283 if (rum_load_microcode(sc, ucode, size) != 0) { 284 printf("%s: could not load 8051 microcode\n", 285 USBDEVNAME(sc->sc_dev)); 286 firmware_free(ucode, 0); 287 return ENXIO; 288 } 289 290 firmware_free(ucode, 0); 291 sc->sc_flags |= RT2573_FWLOADED; 292 293 return 0; 294 } 295 296 USB_ATTACH(rum) 297 { 298 USB_ATTACH_START(rum, sc, uaa); 299 struct ieee80211com *ic = &sc->sc_ic; 300 struct ifnet *ifp = &sc->sc_if; 301 usb_interface_descriptor_t *id; 302 usb_endpoint_descriptor_t *ed; 303 usbd_status error; 304 char *devinfop; 305 int i, ntries; 306 uint32_t tmp; 307 308 sc->sc_udev = uaa->device; 309 sc->sc_flags = 0; 310 311 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 312 USB_ATTACH_SETUP; 313 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 314 usbd_devinfo_free(devinfop); 315 316 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 317 printf("%s: could not set configuration no\n", 318 USBDEVNAME(sc->sc_dev)); 319 USB_ATTACH_ERROR_RETURN; 320 } 321 322 /* get the first interface handle */ 323 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 324 &sc->sc_iface); 325 if (error != 0) { 326 printf("%s: could not get interface handle\n", 327 USBDEVNAME(sc->sc_dev)); 328 USB_ATTACH_ERROR_RETURN; 329 } 330 331 /* 332 * Find endpoints. 333 */ 334 id = usbd_get_interface_descriptor(sc->sc_iface); 335 336 sc->sc_rx_no = sc->sc_tx_no = -1; 337 for (i = 0; i < id->bNumEndpoints; i++) { 338 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 339 if (ed == NULL) { 340 printf("%s: no endpoint descriptor for iface %d\n", 341 USBDEVNAME(sc->sc_dev), i); 342 USB_ATTACH_ERROR_RETURN; 343 } 344 345 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 346 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 347 sc->sc_rx_no = ed->bEndpointAddress; 348 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 349 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 350 sc->sc_tx_no = ed->bEndpointAddress; 351 } 352 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 353 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 354 USB_ATTACH_ERROR_RETURN; 355 } 356 357 usb_init_task(&sc->sc_task, rum_task, sc); 358 usb_callout_init(sc->sc_scan_ch); 359 360 sc->amrr.amrr_min_success_threshold = 1; 361 sc->amrr.amrr_max_success_threshold = 10; 362 usb_callout_init(sc->sc_amrr_ch); 363 364 /* retrieve RT2573 rev. no */ 365 tmp = 0; /* XXX shut up warning */ 366 for (ntries = 0; ntries < 1000; ntries++) { 367 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 368 break; 369 DELAY(1000); 370 } 371 if (ntries == 1000) { 372 printf("%s: timeout waiting for chip to settle\n", 373 USBDEVNAME(sc->sc_dev)); 374 USB_ATTACH_ERROR_RETURN; 375 } 376 377 /* retrieve MAC address and various other things from EEPROM */ 378 rum_read_eeprom(sc); 379 380 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 381 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 382 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 383 384 ic->ic_ifp = ifp; 385 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 386 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 387 ic->ic_state = IEEE80211_S_INIT; 388 389 /* set device capabilities */ 390 ic->ic_caps = 391 IEEE80211_C_IBSS | /* IBSS mode supported */ 392 IEEE80211_C_MONITOR | /* monitor mode supported */ 393 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 394 IEEE80211_C_TXPMGT | /* tx power management */ 395 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 396 IEEE80211_C_SHSLOT | /* short slot time supported */ 397 IEEE80211_C_WPA; /* 802.11i */ 398 399 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 400 /* set supported .11a rates */ 401 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 402 403 /* set supported .11a channels */ 404 for (i = 34; i <= 46; i += 4) { 405 ic->ic_channels[i].ic_freq = 406 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 407 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 408 } 409 for (i = 36; i <= 64; i += 4) { 410 ic->ic_channels[i].ic_freq = 411 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 412 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 413 } 414 for (i = 100; i <= 140; i += 4) { 415 ic->ic_channels[i].ic_freq = 416 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 417 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 418 } 419 for (i = 149; i <= 165; i += 4) { 420 ic->ic_channels[i].ic_freq = 421 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 422 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 423 } 424 } 425 426 /* set supported .11b and .11g rates */ 427 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 428 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 429 430 /* set supported .11b and .11g channels (1 through 14) */ 431 for (i = 1; i <= 14; i++) { 432 ic->ic_channels[i].ic_freq = 433 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 434 ic->ic_channels[i].ic_flags = 435 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 436 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 437 } 438 439 ifp->if_softc = sc; 440 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 441 ifp->if_init = rum_init; 442 ifp->if_ioctl = rum_ioctl; 443 ifp->if_start = rum_start; 444 ifp->if_watchdog = rum_watchdog; 445 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 446 IFQ_SET_READY(&ifp->if_snd); 447 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 448 449 if_attach(ifp); 450 ieee80211_ifattach(ic); 451 452 /* override state transition machine */ 453 sc->sc_newstate = ic->ic_newstate; 454 ic->ic_newstate = rum_newstate; 455 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 456 457 #if NBPFILTER > 0 458 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 459 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 460 461 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 462 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 463 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 464 465 sc->sc_txtap_len = sizeof sc->sc_txtapu; 466 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 467 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 468 #endif 469 470 ieee80211_announce(ic); 471 472 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 473 USBDEV(sc->sc_dev)); 474 475 USB_ATTACH_SUCCESS_RETURN; 476 } 477 478 USB_DETACH(rum) 479 { 480 USB_DETACH_START(rum, sc); 481 struct ieee80211com *ic = &sc->sc_ic; 482 struct ifnet *ifp = &sc->sc_if; 483 int s; 484 485 s = splusb(); 486 487 rum_stop(ifp, 1); 488 usb_rem_task(sc->sc_udev, &sc->sc_task); 489 usb_uncallout(sc->sc_scan_ch, rum_next_scan, sc); 490 usb_uncallout(sc->sc_amrr_ch, rum_amrr_timeout, sc); 491 492 if (sc->sc_rx_pipeh != NULL) 493 usbd_abort_pipe(sc->sc_rx_pipeh); 494 495 if (sc->sc_tx_pipeh != NULL) 496 usbd_abort_pipe(sc->sc_tx_pipeh); 497 498 rum_free_rx_list(sc); 499 rum_free_tx_list(sc); 500 501 if (sc->amrr_xfer != NULL) { 502 usbd_free_xfer(sc->amrr_xfer); 503 sc->amrr_xfer = NULL; 504 } 505 506 if (sc->sc_rx_pipeh != NULL) 507 usbd_close_pipe(sc->sc_rx_pipeh); 508 509 if (sc->sc_tx_pipeh != NULL) 510 usbd_close_pipe(sc->sc_tx_pipeh); 511 512 #if NBPFILTER > 0 513 bpfdetach(ifp); 514 #endif 515 ieee80211_ifdetach(ic); /* free all nodes */ 516 if_detach(ifp); 517 518 splx(s); 519 520 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 521 USBDEV(sc->sc_dev)); 522 523 return 0; 524 } 525 526 Static void 527 rum_free_tx_list(struct rum_softc *sc) 528 { 529 int i; 530 531 usb_ether_tx_list_free(sc->tx_data, RT2573_TX_LIST_COUNT); 532 533 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 534 if (sc->tx_ni[i] != NULL) { 535 ieee80211_free_node(sc->tx_ni[i]); 536 sc->tx_ni[i] = NULL; 537 } 538 } 539 } 540 541 Static void 542 rum_free_rx_list(struct rum_softc *sc) 543 { 544 545 usb_ether_rx_list_free(sc->rx_data, RT2573_RX_LIST_COUNT); 546 } 547 548 Static int 549 rum_media_change(struct ifnet *ifp) 550 { 551 int error; 552 553 error = ieee80211_media_change(ifp); 554 if (error != ENETRESET) 555 return error; 556 557 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 558 rum_init(ifp); 559 560 return 0; 561 } 562 563 /* 564 * This function is called periodically (every 200ms) during scanning to 565 * switch from one channel to another. 566 */ 567 Static void 568 rum_next_scan(void *arg) 569 { 570 struct rum_softc *sc = arg; 571 struct ieee80211com *ic = &sc->sc_ic; 572 573 if (ic->ic_state == IEEE80211_S_SCAN) 574 ieee80211_next_scan(ic); 575 } 576 577 Static void 578 rum_task(void *arg) 579 { 580 struct rum_softc *sc = arg; 581 struct ieee80211com *ic = &sc->sc_ic; 582 enum ieee80211_state ostate; 583 struct ieee80211_node *ni; 584 uint32_t tmp; 585 586 ostate = ic->ic_state; 587 588 switch (sc->sc_state) { 589 case IEEE80211_S_INIT: 590 if (ostate == IEEE80211_S_RUN) { 591 /* abort TSF synchronization */ 592 tmp = rum_read(sc, RT2573_TXRX_CSR9); 593 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 594 } 595 break; 596 597 case IEEE80211_S_SCAN: 598 rum_set_chan(sc, ic->ic_curchan); 599 usb_callout(sc->sc_scan_ch, hz / 5, rum_next_scan, sc); 600 break; 601 602 case IEEE80211_S_AUTH: 603 rum_set_chan(sc, ic->ic_curchan); 604 break; 605 606 case IEEE80211_S_ASSOC: 607 rum_set_chan(sc, ic->ic_curchan); 608 break; 609 610 case IEEE80211_S_RUN: 611 rum_set_chan(sc, ic->ic_curchan); 612 613 ni = ic->ic_bss; 614 615 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 616 rum_update_slot(sc); 617 rum_enable_mrr(sc); 618 rum_set_txpreamble(sc); 619 rum_set_basicrates(sc); 620 rum_set_bssid(sc, ni->ni_bssid); 621 } 622 623 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 624 ic->ic_opmode == IEEE80211_M_IBSS) 625 rum_prepare_beacon(sc); 626 627 if (ic->ic_opmode != IEEE80211_M_MONITOR) 628 rum_enable_tsf_sync(sc); 629 630 /* enable automatic rate adaptation in STA mode */ 631 if (ic->ic_opmode == IEEE80211_M_STA && 632 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 633 rum_amrr_start(sc, ni); 634 635 break; 636 } 637 638 sc->sc_newstate(ic, sc->sc_state, -1); 639 } 640 641 Static int 642 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 643 { 644 struct rum_softc *sc = ic->ic_ifp->if_softc; 645 646 usb_rem_task(sc->sc_udev, &sc->sc_task); 647 usb_uncallout(sc->sc_scan_ch, rum_next_scan, sc); 648 usb_uncallout(sc->sc_amrr_ch, rum_amrr_timeout, sc); 649 650 /* do it in a process context */ 651 sc->sc_state = nstate; 652 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 653 654 return 0; 655 } 656 657 /* quickly determine if a given rate is CCK or OFDM */ 658 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 659 660 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 661 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 662 663 Static void 664 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 665 { 666 struct ue_chain *data = priv; 667 struct rum_softc *sc = (void *)data->ue_dev; 668 struct ifnet *ifp = &sc->sc_if; 669 int s; 670 671 usbd_unmap_buffer(xfer); 672 673 if (status != USBD_NORMAL_COMPLETION) { 674 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 675 return; 676 677 printf("%s: could not transmit buffer: %s\n", 678 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 679 680 if (status == USBD_STALLED) 681 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 682 683 ifp->if_oerrors++; 684 return; 685 } 686 687 s = splnet(); 688 689 m_freem(data->ue_mbuf); 690 data->ue_mbuf = NULL; 691 ieee80211_free_node(sc->tx_ni[data->ue_idx]); 692 sc->tx_ni[data->ue_idx] = NULL; 693 694 sc->tx_queued--; 695 ifp->if_opackets++; 696 697 DPRINTFN(10, ("tx done\n")); 698 699 sc->sc_tx_timer = 0; 700 ifp->if_flags &= ~IFF_OACTIVE; 701 rum_start(ifp); 702 703 splx(s); 704 } 705 706 Static void 707 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 708 { 709 struct ue_chain *data = priv; 710 struct rum_softc *sc = (void *)data->ue_dev; 711 struct ieee80211com *ic = &sc->sc_ic; 712 struct ifnet *ifp = &sc->sc_if; 713 struct rum_rx_desc *desc; 714 struct ieee80211_frame *wh; 715 struct ieee80211_node *ni; 716 struct mbuf *m; 717 int s, len; 718 719 usbd_unmap_buffer(xfer); 720 721 if (status != USBD_NORMAL_COMPLETION) { 722 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 723 return; 724 725 if (status == USBD_STALLED) 726 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 727 goto skip; 728 } 729 730 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 731 732 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 733 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 734 len)); 735 ifp->if_ierrors++; 736 goto skip; 737 } 738 739 m = data->ue_mbuf; 740 desc = mtod(m, struct rum_rx_desc *); 741 742 if (UGETDW((u_int8_t *)&desc->flags) & RT2573_RX_CRC_ERROR) { 743 /* 744 * This should not happen since we did not request to receive 745 * those frames when we filled RT2573_TXRX_CSR0. 746 */ 747 DPRINTFN(5, ("CRC error\n")); 748 ifp->if_ierrors++; 749 goto skip; 750 } 751 752 /* 753 * Allocate new mbuf cluster for the next transfer. 754 * If that failed, discard current packet and recycle the mbuf. 755 */ 756 if ((data->ue_mbuf = usb_ether_newbuf(NULL)) == NULL) { 757 printf("%s: no memory for rx list -- packet dropped!\n", 758 USBDEVNAME(sc->sc_dev)); 759 ifp->if_ierrors++; 760 data->ue_mbuf = usb_ether_newbuf(m); 761 goto skip; 762 } 763 764 /* finalize mbuf */ 765 m->m_pkthdr.rcvif = ifp; 766 m->m_data = (void *)(desc + 1); 767 m->m_pkthdr.len = m->m_len = UGETW((u_int8_t *)&desc->flags + 2); 768 769 s = splnet(); 770 771 #if NBPFILTER > 0 772 if (sc->sc_drvbpf != NULL) { 773 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 774 775 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 776 tap->wr_rate = rum_rxrate(desc); 777 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 778 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 779 tap->wr_antenna = sc->rx_ant; 780 tap->wr_antsignal = desc->rssi; 781 782 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 783 } 784 #endif 785 786 wh = mtod(m, struct ieee80211_frame *); 787 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 788 789 /* send the frame to the 802.11 layer */ 790 ieee80211_input(ic, m, ni, desc->rssi, 0); 791 792 /* node is no longer needed */ 793 ieee80211_free_node(ni); 794 795 splx(s); 796 797 DPRINTFN(15, ("rx done\n")); 798 799 skip: /* setup a new transfer */ 800 (void)usbd_map_buffer_mbuf(xfer, data->ue_mbuf); 801 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, NULL /* XXX buf */, MCLBYTES, 802 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 803 usbd_transfer(xfer); 804 } 805 806 /* 807 * This function is only used by the Rx radiotap code. It returns the rate at 808 * which a given frame was received. 809 */ 810 #if NBPFILTER > 0 811 Static uint8_t 812 rum_rxrate(struct rum_rx_desc *desc) 813 { 814 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 815 /* reverse function of rum_plcp_signal */ 816 switch (desc->rate) { 817 case 0xb: return 12; 818 case 0xf: return 18; 819 case 0xa: return 24; 820 case 0xe: return 36; 821 case 0x9: return 48; 822 case 0xd: return 72; 823 case 0x8: return 96; 824 case 0xc: return 108; 825 } 826 } else { 827 if (desc->rate == 10) 828 return 2; 829 if (desc->rate == 20) 830 return 4; 831 if (desc->rate == 55) 832 return 11; 833 if (desc->rate == 110) 834 return 22; 835 } 836 return 2; /* should not get there */ 837 } 838 #endif 839 840 /* 841 * Return the expected ack rate for a frame transmitted at rate `rate'. 842 * XXX: this should depend on the destination node basic rate set. 843 */ 844 Static int 845 rum_ack_rate(struct ieee80211com *ic, int rate) 846 { 847 switch (rate) { 848 /* CCK rates */ 849 case 2: 850 return 2; 851 case 4: 852 case 11: 853 case 22: 854 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 855 856 /* OFDM rates */ 857 case 12: 858 case 18: 859 return 12; 860 case 24: 861 case 36: 862 return 24; 863 case 48: 864 case 72: 865 case 96: 866 case 108: 867 return 48; 868 } 869 870 /* default to 1Mbps */ 871 return 2; 872 } 873 874 /* 875 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 876 * The function automatically determines the operating mode depending on the 877 * given rate. `flags' indicates whether short preamble is in use or not. 878 */ 879 Static uint16_t 880 rum_txtime(int len, int rate, uint32_t flags) 881 { 882 uint16_t txtime; 883 884 if (RUM_RATE_IS_OFDM(rate)) { 885 /* IEEE Std 802.11a-1999, pp. 37 */ 886 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 887 txtime = 16 + 4 + 4 * txtime + 6; 888 } else { 889 /* IEEE Std 802.11b-1999, pp. 28 */ 890 txtime = (16 * len + rate - 1) / rate; 891 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 892 txtime += 72 + 24; 893 else 894 txtime += 144 + 48; 895 } 896 return txtime; 897 } 898 899 Static uint8_t 900 rum_plcp_signal(int rate) 901 { 902 switch (rate) { 903 /* CCK rates (returned values are device-dependent) */ 904 case 2: return 0x0; 905 case 4: return 0x1; 906 case 11: return 0x2; 907 case 22: return 0x3; 908 909 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 910 case 12: return 0xb; 911 case 18: return 0xf; 912 case 24: return 0xa; 913 case 36: return 0xe; 914 case 48: return 0x9; 915 case 72: return 0xd; 916 case 96: return 0x8; 917 case 108: return 0xc; 918 919 /* unsupported rates (should not get there) */ 920 default: return 0xff; 921 } 922 } 923 924 Static void 925 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 926 uint32_t flags, uint16_t xflags, int len, int rate) 927 { 928 struct ieee80211com *ic = &sc->sc_ic; 929 uint16_t plcp_length; 930 int remainder; 931 932 desc->flags = htole32(flags); 933 desc->flags |= htole32(RT2573_TX_VALID); 934 desc->flags |= htole32(len << 16); 935 936 desc->xflags = htole16(xflags); 937 938 desc->wme = htole16( 939 RT2573_QID(0) | 940 RT2573_AIFSN(2) | 941 RT2573_LOGCWMIN(4) | 942 RT2573_LOGCWMAX(10)); 943 944 /* setup PLCP fields */ 945 desc->plcp_signal = rum_plcp_signal(rate); 946 desc->plcp_service = 4; 947 948 len += IEEE80211_CRC_LEN; 949 if (RUM_RATE_IS_OFDM(rate)) { 950 desc->flags |= htole32(RT2573_TX_OFDM); 951 952 plcp_length = len & 0xfff; 953 desc->plcp_length_hi = plcp_length >> 6; 954 desc->plcp_length_lo = plcp_length & 0x3f; 955 } else { 956 plcp_length = (16 * len + rate - 1) / rate; 957 if (rate == 22) { 958 remainder = (16 * len) % 22; 959 if (remainder != 0 && remainder < 7) 960 desc->plcp_service |= RT2573_PLCP_LENGEXT; 961 } 962 desc->plcp_length_hi = plcp_length >> 8; 963 desc->plcp_length_lo = plcp_length & 0xff; 964 965 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 966 desc->plcp_signal |= 0x08; 967 } 968 } 969 970 #define RUM_TX_TIMEOUT 5000 971 972 Static int 973 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 974 { 975 struct ieee80211com *ic = &sc->sc_ic; 976 struct rum_tx_desc *desc; 977 struct ue_chain *data; 978 struct ieee80211_frame *wh; 979 uint32_t flags = 0; 980 uint16_t dur; 981 usbd_status error; 982 int xferlen, rate; 983 int ret; 984 985 data = &sc->tx_data[0]; 986 987 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 988 989 data->ue_mbuf = m0; 990 sc->tx_ni[data->ue_idx] = ni; 991 992 wh = mtod(m0, struct ieee80211_frame *); 993 994 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 995 flags |= RT2573_TX_ACK; 996 997 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 998 ic->ic_flags) + sc->sifs; 999 *(uint16_t *)wh->i_dur = htole16(dur); 1000 1001 /* tell hardware to set timestamp in probe responses */ 1002 if ((wh->i_fc[0] & 1003 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1004 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1005 flags |= RT2573_TX_TIMESTAMP; 1006 } 1007 1008 #if NBPFILTER > 0 1009 if (sc->sc_drvbpf != NULL) { 1010 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1011 1012 tap->wt_flags = 0; 1013 tap->wt_rate = rate; 1014 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1015 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1016 tap->wt_antenna = sc->tx_ant; 1017 1018 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1019 } 1020 #endif 1021 1022 /* Prepend Tx descriptor */ 1023 M_PREPEND(m0, RT2573_TX_DESC_SIZE, M_DONTWAIT); 1024 if (m0 != NULL) 1025 m0 = m_pullup(m0, RT2573_TX_DESC_SIZE); /* just in case */ 1026 if (m0 == NULL) { 1027 return ENOBUFS; 1028 } 1029 desc = mtod(m0, struct rum_tx_desc *); 1030 1031 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1032 1033 /* align end on a 4-bytes boundary */ 1034 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1035 1036 /* 1037 * No space left in the last URB to store the extra 4 bytes, force 1038 * sending of another URB. 1039 */ 1040 if ((xferlen % 64) == 0) 1041 xferlen += 4; 1042 1043 if (m0->m_pkthdr.len != xferlen) { 1044 m_copyback(m0, xferlen - 1, 1, ""); /* expand mbuf chain */ 1045 if (m0->m_pkthdr.len != xferlen) { 1046 m_freem(m0); 1047 return ENOBUFS; 1048 } 1049 } 1050 1051 ret = usb_ether_map_tx_buffer_mbuf(data, m0); 1052 if (ret) { 1053 m_freem(m0); 1054 return ret; 1055 } 1056 1057 DPRINTFN(10, ("sending msg frame len=%lu rate=%u xfer len=%u\n", 1058 (long unsigned int)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1059 rate, xferlen)); 1060 1061 usbd_setup_xfer(data->ue_xfer, sc->sc_tx_pipeh, data, NULL /* XXX buf */, xferlen, 1062 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1063 1064 error = usbd_transfer(data->ue_xfer); 1065 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1066 data->ue_mbuf = NULL; 1067 m_freem(m0); 1068 return error; 1069 } 1070 1071 sc->tx_queued++; 1072 1073 return 0; 1074 } 1075 1076 Static int 1077 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1078 { 1079 struct ieee80211com *ic = &sc->sc_ic; 1080 struct rum_tx_desc *desc; 1081 struct ue_chain *data; 1082 struct ieee80211_frame *wh; 1083 struct ieee80211_key *k; 1084 uint32_t flags = 0; 1085 uint16_t dur; 1086 usbd_status error; 1087 int xferlen, rate; 1088 int ret; 1089 1090 wh = mtod(m0, struct ieee80211_frame *); 1091 1092 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1093 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1094 else 1095 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1096 rate &= IEEE80211_RATE_VAL; 1097 1098 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1099 k = ieee80211_crypto_encap(ic, ni, m0); 1100 if (k == NULL) { 1101 m_freem(m0); 1102 return ENOBUFS; 1103 } 1104 1105 /* packet header may have moved, reset our local pointer */ 1106 wh = mtod(m0, struct ieee80211_frame *); 1107 } 1108 1109 data = &sc->tx_data[0]; 1110 1111 data->ue_mbuf = m0; 1112 sc->tx_ni[data->ue_idx] = ni; 1113 1114 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1115 flags |= RT2573_TX_ACK; 1116 1117 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1118 ic->ic_flags) + sc->sifs; 1119 *(uint16_t *)wh->i_dur = htole16(dur); 1120 } 1121 1122 #if NBPFILTER > 0 1123 if (sc->sc_drvbpf != NULL) { 1124 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1125 1126 tap->wt_flags = 0; 1127 tap->wt_rate = rate; 1128 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1129 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1130 tap->wt_antenna = sc->tx_ant; 1131 1132 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1133 } 1134 #endif 1135 1136 /* Prepend Tx descriptor */ 1137 M_PREPEND(m0, RT2573_TX_DESC_SIZE, M_DONTWAIT); 1138 if (m0 != NULL) 1139 m0 = m_pullup(m0, RT2573_TX_DESC_SIZE); /* just in case */ 1140 if (m0 == NULL) { 1141 return ENOBUFS; 1142 } 1143 desc = mtod(m0, struct rum_tx_desc *); 1144 1145 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1146 1147 /* align end on a 4-bytes boundary */ 1148 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1149 1150 /* 1151 * No space left in the last URB to store the extra 4 bytes, force 1152 * sending of another URB. 1153 */ 1154 if ((xferlen % 64) == 0) 1155 xferlen += 4; 1156 1157 if (m0->m_pkthdr.len != xferlen) { 1158 m_copyback(m0, xferlen - 1, 1, ""); /* expand mbuf chain */ 1159 if (m0->m_pkthdr.len != xferlen) { 1160 m_freem(m0); 1161 return ENOBUFS; 1162 } 1163 } 1164 1165 ret = usb_ether_map_tx_buffer_mbuf(data, m0); 1166 if (ret) { 1167 m_freem(m0); 1168 return ret; 1169 } 1170 1171 DPRINTFN(10, ("sending data frame len=%lu rate=%u xfer len=%u\n", 1172 (long unsigned int)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1173 rate, xferlen)); 1174 1175 usbd_setup_xfer(data->ue_xfer, sc->sc_tx_pipeh, data, NULL /* XXX buf */, xferlen, 1176 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1177 1178 error = usbd_transfer(data->ue_xfer); 1179 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1180 data->ue_mbuf = NULL; 1181 m_freem(m0); 1182 return error; 1183 } 1184 1185 sc->tx_queued++; 1186 1187 return 0; 1188 } 1189 1190 Static void 1191 rum_start(struct ifnet *ifp) 1192 { 1193 struct rum_softc *sc = ifp->if_softc; 1194 struct ieee80211com *ic = &sc->sc_ic; 1195 struct ether_header *eh; 1196 struct ieee80211_node *ni; 1197 struct mbuf *m0; 1198 1199 for (;;) { 1200 IF_POLL(&ic->ic_mgtq, m0); 1201 if (m0 != NULL) { 1202 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1203 ifp->if_flags |= IFF_OACTIVE; 1204 break; 1205 } 1206 IF_DEQUEUE(&ic->ic_mgtq, m0); 1207 1208 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1209 m0->m_pkthdr.rcvif = NULL; 1210 #if NBPFILTER > 0 1211 if (ic->ic_rawbpf != NULL) 1212 bpf_mtap(ic->ic_rawbpf, m0); 1213 #endif 1214 if (rum_tx_mgt(sc, m0, ni) != 0) 1215 break; 1216 1217 } else { 1218 if (ic->ic_state != IEEE80211_S_RUN) 1219 break; 1220 IFQ_POLL(&ifp->if_snd, m0); 1221 if (m0 == NULL) 1222 break; 1223 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1224 ifp->if_flags |= IFF_OACTIVE; 1225 break; 1226 } 1227 IFQ_DEQUEUE(&ifp->if_snd, m0); 1228 if (m0->m_len < sizeof(struct ether_header) && 1229 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1230 continue; 1231 1232 eh = mtod(m0, struct ether_header *); 1233 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1234 if (ni == NULL) { 1235 m_freem(m0); 1236 continue; 1237 } 1238 #if NBPFILTER > 0 1239 if (ifp->if_bpf != NULL) 1240 bpf_mtap(ifp->if_bpf, m0); 1241 #endif 1242 m0 = ieee80211_encap(ic, m0, ni); 1243 if (m0 == NULL) { 1244 ieee80211_free_node(ni); 1245 continue; 1246 } 1247 #if NBPFILTER > 0 1248 if (ic->ic_rawbpf != NULL) 1249 bpf_mtap(ic->ic_rawbpf, m0); 1250 #endif 1251 if (rum_tx_data(sc, m0, ni) != 0) { 1252 ieee80211_free_node(ni); 1253 ifp->if_oerrors++; 1254 break; 1255 } 1256 } 1257 1258 sc->sc_tx_timer = 5; 1259 ifp->if_timer = 1; 1260 } 1261 } 1262 1263 Static void 1264 rum_watchdog(struct ifnet *ifp) 1265 { 1266 struct rum_softc *sc = ifp->if_softc; 1267 struct ieee80211com *ic = &sc->sc_ic; 1268 1269 ifp->if_timer = 0; 1270 1271 if (sc->sc_tx_timer > 0) { 1272 if (--sc->sc_tx_timer == 0) { 1273 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1274 /*rum_init(ifp); XXX needs a process context! */ 1275 ifp->if_oerrors++; 1276 return; 1277 } 1278 ifp->if_timer = 1; 1279 } 1280 1281 ieee80211_watchdog(ic); 1282 } 1283 1284 Static int 1285 rum_ioctl(struct ifnet *ifp, u_long cmd, usb_ioctlarg_t data) 1286 { 1287 struct rum_softc *sc = ifp->if_softc; 1288 struct ieee80211com *ic = &sc->sc_ic; 1289 int s, error = 0; 1290 1291 s = splnet(); 1292 1293 switch (cmd) { 1294 case SIOCSIFFLAGS: 1295 if (ifp->if_flags & IFF_UP) { 1296 if (ifp->if_flags & IFF_RUNNING) 1297 rum_update_promisc(sc); 1298 else 1299 rum_init(ifp); 1300 } else { 1301 if (ifp->if_flags & IFF_RUNNING) 1302 rum_stop(ifp, 1); 1303 } 1304 break; 1305 1306 default: 1307 error = ieee80211_ioctl(ic, cmd, data); 1308 } 1309 1310 if (error == ENETRESET) { 1311 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1312 (IFF_UP | IFF_RUNNING)) 1313 rum_init(ifp); 1314 error = 0; 1315 } 1316 1317 splx(s); 1318 1319 return error; 1320 } 1321 1322 Static void 1323 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1324 { 1325 usb_device_request_t req; 1326 usbd_status error; 1327 1328 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1329 req.bRequest = RT2573_READ_EEPROM; 1330 USETW(req.wValue, 0); 1331 USETW(req.wIndex, addr); 1332 USETW(req.wLength, len); 1333 1334 error = usbd_do_request(sc->sc_udev, &req, buf); 1335 if (error != 0) { 1336 printf("%s: could not read EEPROM: %s\n", 1337 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1338 } 1339 } 1340 1341 Static uint32_t 1342 rum_read(struct rum_softc *sc, uint16_t reg) 1343 { 1344 uint32_t val; 1345 1346 rum_read_multi(sc, reg, &val, sizeof val); 1347 1348 return le32toh(val); 1349 } 1350 1351 Static void 1352 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1353 { 1354 usb_device_request_t req; 1355 usbd_status error; 1356 1357 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1358 req.bRequest = RT2573_READ_MULTI_MAC; 1359 USETW(req.wValue, 0); 1360 USETW(req.wIndex, reg); 1361 USETW(req.wLength, len); 1362 1363 error = usbd_do_request(sc->sc_udev, &req, buf); 1364 if (error != 0) { 1365 printf("%s: could not multi read MAC register: %s\n", 1366 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1367 } 1368 } 1369 1370 Static void 1371 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1372 { 1373 uint32_t tmp = htole32(val); 1374 1375 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1376 } 1377 1378 Static void 1379 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1380 { 1381 usb_device_request_t req; 1382 usbd_status error; 1383 1384 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1385 req.bRequest = RT2573_WRITE_MULTI_MAC; 1386 USETW(req.wValue, 0); 1387 USETW(req.wIndex, reg); 1388 USETW(req.wLength, len); 1389 1390 error = usbd_do_request(sc->sc_udev, &req, buf); 1391 if (error != 0) { 1392 printf("%s: could not multi write MAC register: %s\n", 1393 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1394 } 1395 } 1396 1397 Static void 1398 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1399 { 1400 uint32_t tmp; 1401 int ntries; 1402 1403 for (ntries = 0; ntries < 5; ntries++) { 1404 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1405 break; 1406 } 1407 if (ntries == 5) { 1408 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1409 return; 1410 } 1411 1412 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1413 rum_write(sc, RT2573_PHY_CSR3, tmp); 1414 } 1415 1416 Static uint8_t 1417 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1418 { 1419 uint32_t val; 1420 int ntries; 1421 1422 for (ntries = 0; ntries < 5; ntries++) { 1423 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1424 break; 1425 } 1426 if (ntries == 5) { 1427 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1428 return 0; 1429 } 1430 1431 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1432 rum_write(sc, RT2573_PHY_CSR3, val); 1433 1434 for (ntries = 0; ntries < 100; ntries++) { 1435 val = rum_read(sc, RT2573_PHY_CSR3); 1436 if (!(val & RT2573_BBP_BUSY)) 1437 return val & 0xff; 1438 DELAY(1); 1439 } 1440 1441 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1442 return 0; 1443 } 1444 1445 Static void 1446 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1447 { 1448 uint32_t tmp; 1449 int ntries; 1450 1451 for (ntries = 0; ntries < 5; ntries++) { 1452 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1453 break; 1454 } 1455 if (ntries == 5) { 1456 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1457 return; 1458 } 1459 1460 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1461 (reg & 3); 1462 rum_write(sc, RT2573_PHY_CSR4, tmp); 1463 1464 /* remember last written value in sc */ 1465 sc->rf_regs[reg] = val; 1466 1467 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1468 } 1469 1470 Static void 1471 rum_select_antenna(struct rum_softc *sc) 1472 { 1473 uint8_t bbp4, bbp77; 1474 uint32_t tmp; 1475 1476 bbp4 = rum_bbp_read(sc, 4); 1477 bbp77 = rum_bbp_read(sc, 77); 1478 1479 /* TBD */ 1480 1481 /* make sure Rx is disabled before switching antenna */ 1482 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1483 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1484 1485 rum_bbp_write(sc, 4, bbp4); 1486 rum_bbp_write(sc, 77, bbp77); 1487 1488 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1489 } 1490 1491 /* 1492 * Enable multi-rate retries for frames sent at OFDM rates. 1493 * In 802.11b/g mode, allow fallback to CCK rates. 1494 */ 1495 Static void 1496 rum_enable_mrr(struct rum_softc *sc) 1497 { 1498 struct ieee80211com *ic = &sc->sc_ic; 1499 uint32_t tmp; 1500 1501 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1502 1503 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1504 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1505 tmp |= RT2573_MRR_CCK_FALLBACK; 1506 tmp |= RT2573_MRR_ENABLED; 1507 1508 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1509 } 1510 1511 Static void 1512 rum_set_txpreamble(struct rum_softc *sc) 1513 { 1514 uint32_t tmp; 1515 1516 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1517 1518 tmp &= ~RT2573_SHORT_PREAMBLE; 1519 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1520 tmp |= RT2573_SHORT_PREAMBLE; 1521 1522 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1523 } 1524 1525 Static void 1526 rum_set_basicrates(struct rum_softc *sc) 1527 { 1528 struct ieee80211com *ic = &sc->sc_ic; 1529 1530 /* update basic rate set */ 1531 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1532 /* 11b basic rates: 1, 2Mbps */ 1533 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1534 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1535 /* 11a basic rates: 6, 12, 24Mbps */ 1536 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1537 } else { 1538 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1539 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1540 } 1541 } 1542 1543 /* 1544 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1545 * driver. 1546 */ 1547 Static void 1548 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1549 { 1550 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1551 uint32_t tmp; 1552 1553 /* update all BBP registers that depend on the band */ 1554 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1555 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1556 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1557 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1558 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1559 } 1560 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1561 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1562 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1563 } 1564 1565 sc->bbp17 = bbp17; 1566 rum_bbp_write(sc, 17, bbp17); 1567 rum_bbp_write(sc, 96, bbp96); 1568 rum_bbp_write(sc, 104, bbp104); 1569 1570 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1571 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1572 rum_bbp_write(sc, 75, 0x80); 1573 rum_bbp_write(sc, 86, 0x80); 1574 rum_bbp_write(sc, 88, 0x80); 1575 } 1576 1577 rum_bbp_write(sc, 35, bbp35); 1578 rum_bbp_write(sc, 97, bbp97); 1579 rum_bbp_write(sc, 98, bbp98); 1580 1581 tmp = rum_read(sc, RT2573_PHY_CSR0); 1582 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1583 if (IEEE80211_IS_CHAN_2GHZ(c)) 1584 tmp |= RT2573_PA_PE_2GHZ; 1585 else 1586 tmp |= RT2573_PA_PE_5GHZ; 1587 rum_write(sc, RT2573_PHY_CSR0, tmp); 1588 1589 /* 802.11a uses a 16 microseconds short interframe space */ 1590 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1591 } 1592 1593 Static void 1594 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1595 { 1596 struct ieee80211com *ic = &sc->sc_ic; 1597 const struct rfprog *rfprog; 1598 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1599 int8_t power; 1600 u_int i, chan; 1601 1602 chan = ieee80211_chan2ieee(ic, c); 1603 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1604 return; 1605 1606 /* select the appropriate RF settings based on what EEPROM says */ 1607 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1608 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1609 1610 /* find the settings for this channel (we know it exists) */ 1611 for (i = 0; rfprog[i].chan != chan; i++); 1612 1613 power = sc->txpow[i]; 1614 if (power < 0) { 1615 bbp94 += power; 1616 power = 0; 1617 } else if (power > 31) { 1618 bbp94 += power - 31; 1619 power = 31; 1620 } 1621 1622 /* 1623 * If we are switching from the 2GHz band to the 5GHz band or 1624 * vice-versa, BBP registers need to be reprogrammed. 1625 */ 1626 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1627 rum_select_band(sc, c); 1628 rum_select_antenna(sc); 1629 } 1630 ic->ic_curchan = c; 1631 1632 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1633 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1634 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1635 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1636 1637 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1638 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1639 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1640 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1641 1642 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1643 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1644 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1645 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1646 1647 DELAY(10); 1648 1649 /* enable smart mode for MIMO-capable RFs */ 1650 bbp3 = rum_bbp_read(sc, 3); 1651 1652 bbp3 &= ~RT2573_SMART_MODE; 1653 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1654 bbp3 |= RT2573_SMART_MODE; 1655 1656 rum_bbp_write(sc, 3, bbp3); 1657 1658 if (bbp94 != RT2573_BBPR94_DEFAULT) 1659 rum_bbp_write(sc, 94, bbp94); 1660 } 1661 1662 /* 1663 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1664 * and HostAP operating modes. 1665 */ 1666 Static void 1667 rum_enable_tsf_sync(struct rum_softc *sc) 1668 { 1669 struct ieee80211com *ic = &sc->sc_ic; 1670 uint32_t tmp; 1671 1672 if (ic->ic_opmode != IEEE80211_M_STA) { 1673 /* 1674 * Change default 16ms TBTT adjustment to 8ms. 1675 * Must be done before enabling beacon generation. 1676 */ 1677 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1678 } 1679 1680 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1681 1682 /* set beacon interval (in 1/16ms unit) */ 1683 tmp |= ic->ic_bss->ni_intval * 16; 1684 1685 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1686 if (ic->ic_opmode == IEEE80211_M_STA) 1687 tmp |= RT2573_TSF_MODE(1); 1688 else 1689 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1690 1691 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1692 } 1693 1694 Static void 1695 rum_update_slot(struct rum_softc *sc) 1696 { 1697 struct ieee80211com *ic = &sc->sc_ic; 1698 uint8_t slottime; 1699 uint32_t tmp; 1700 1701 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1702 1703 tmp = rum_read(sc, RT2573_MAC_CSR9); 1704 tmp = (tmp & ~0xff) | slottime; 1705 rum_write(sc, RT2573_MAC_CSR9, tmp); 1706 1707 DPRINTF(("setting slot time to %uus\n", slottime)); 1708 } 1709 1710 Static void 1711 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1712 { 1713 uint32_t tmp; 1714 1715 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1716 rum_write(sc, RT2573_MAC_CSR4, tmp); 1717 1718 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1719 rum_write(sc, RT2573_MAC_CSR5, tmp); 1720 } 1721 1722 Static void 1723 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1724 { 1725 uint32_t tmp; 1726 1727 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1728 rum_write(sc, RT2573_MAC_CSR2, tmp); 1729 1730 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1731 rum_write(sc, RT2573_MAC_CSR3, tmp); 1732 } 1733 1734 Static void 1735 rum_update_promisc(struct rum_softc *sc) 1736 { 1737 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1738 uint32_t tmp; 1739 1740 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1741 1742 tmp &= ~RT2573_DROP_NOT_TO_ME; 1743 if (!(ifp->if_flags & IFF_PROMISC)) 1744 tmp |= RT2573_DROP_NOT_TO_ME; 1745 1746 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1747 1748 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1749 "entering" : "leaving")); 1750 } 1751 1752 Static const char * 1753 rum_get_rf(int rev) 1754 { 1755 switch (rev) { 1756 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1757 case RT2573_RF_2528: return "RT2528"; 1758 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1759 case RT2573_RF_5226: return "RT5226"; 1760 default: return "unknown"; 1761 } 1762 } 1763 1764 Static void 1765 rum_read_eeprom(struct rum_softc *sc) 1766 { 1767 struct ieee80211com *ic = &sc->sc_ic; 1768 uint16_t val; 1769 #ifdef RUM_DEBUG 1770 int i; 1771 #endif 1772 1773 /* read MAC/BBP type */ 1774 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1775 sc->macbbp_rev = le16toh(val); 1776 1777 /* read MAC address */ 1778 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1779 1780 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1781 val = le16toh(val); 1782 sc->rf_rev = (val >> 11) & 0x1f; 1783 sc->hw_radio = (val >> 10) & 0x1; 1784 sc->rx_ant = (val >> 4) & 0x3; 1785 sc->tx_ant = (val >> 2) & 0x3; 1786 sc->nb_ant = val & 0x3; 1787 1788 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1789 1790 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1791 val = le16toh(val); 1792 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1793 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1794 1795 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1796 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1797 1798 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1799 val = le16toh(val); 1800 if ((val & 0xff) != 0xff) 1801 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1802 1803 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1804 val = le16toh(val); 1805 if ((val & 0xff) != 0xff) 1806 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1807 1808 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1809 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1810 1811 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1812 val = le16toh(val); 1813 if ((val & 0xff) != 0xff) 1814 sc->rffreq = val & 0xff; 1815 1816 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1817 1818 /* read Tx power for all a/b/g channels */ 1819 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1820 /* XXX default Tx power for 802.11a channels */ 1821 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1822 #ifdef RUM_DEBUG 1823 for (i = 0; i < 14; i++) 1824 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1825 #endif 1826 1827 /* read default values for BBP registers */ 1828 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1829 #ifdef RUM_DEBUG 1830 for (i = 0; i < 14; i++) { 1831 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1832 continue; 1833 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1834 sc->bbp_prom[i].val)); 1835 } 1836 #endif 1837 } 1838 1839 Static int 1840 rum_bbp_init(struct rum_softc *sc) 1841 { 1842 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1843 int i, ntries; 1844 uint8_t val; 1845 1846 /* wait for BBP to be ready */ 1847 for (ntries = 0; ntries < 100; ntries++) { 1848 val = rum_bbp_read(sc, 0); 1849 if (val != 0 && val != 0xff) 1850 break; 1851 DELAY(1000); 1852 } 1853 if (ntries == 100) { 1854 printf("%s: timeout waiting for BBP\n", 1855 USBDEVNAME(sc->sc_dev)); 1856 return EIO; 1857 } 1858 1859 /* initialize BBP registers to default values */ 1860 for (i = 0; i < N(rum_def_bbp); i++) 1861 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1862 1863 /* write vendor-specific BBP values (from EEPROM) */ 1864 for (i = 0; i < 16; i++) { 1865 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1866 continue; 1867 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1868 } 1869 1870 return 0; 1871 #undef N 1872 } 1873 1874 Static int 1875 rum_init(struct ifnet *ifp) 1876 { 1877 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1878 struct rum_softc *sc = ifp->if_softc; 1879 struct ieee80211com *ic = &sc->sc_ic; 1880 struct ue_chain *data; 1881 uint32_t tmp; 1882 usbd_status uerror; 1883 int error; 1884 int i, ntries; 1885 1886 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1887 if (rum_attachhook(sc)) { 1888 error = EIO; 1889 goto fail; 1890 } 1891 } 1892 1893 rum_stop(ifp, 0); 1894 1895 /* initialize MAC registers to default values */ 1896 for (i = 0; i < N(rum_def_mac); i++) 1897 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1898 1899 /* set host ready */ 1900 rum_write(sc, RT2573_MAC_CSR1, 3); 1901 rum_write(sc, RT2573_MAC_CSR1, 0); 1902 1903 /* wait for BBP/RF to wakeup */ 1904 for (ntries = 0; ntries < 1000; ntries++) { 1905 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1906 break; 1907 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1908 DELAY(1000); 1909 } 1910 if (ntries == 1000) { 1911 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1912 USBDEVNAME(sc->sc_dev)); 1913 error = EIO; 1914 goto fail; 1915 } 1916 1917 if ((error = rum_bbp_init(sc)) != 0) 1918 goto fail; 1919 1920 /* select default channel */ 1921 rum_select_band(sc, ic->ic_curchan); 1922 rum_select_antenna(sc); 1923 rum_set_chan(sc, ic->ic_curchan); 1924 1925 /* clear STA registers */ 1926 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1927 1928 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1929 rum_set_macaddr(sc, ic->ic_myaddr); 1930 1931 /* initialize ASIC */ 1932 rum_write(sc, RT2573_MAC_CSR1, 4); 1933 1934 /* 1935 * Allocate xfer for AMRR statistics requests. 1936 */ 1937 sc->amrr_xfer = usbd_alloc_default_xfer(sc->sc_udev); 1938 if (sc->amrr_xfer == NULL) { 1939 printf("%s: could not allocate AMRR xfer\n", 1940 USBDEVNAME(sc->sc_dev)); 1941 goto fail; 1942 } 1943 1944 /* 1945 * Open Tx and Rx USB bulk pipes. 1946 */ 1947 uerror = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1948 &sc->sc_tx_pipeh); 1949 if (uerror != USBD_NORMAL_COMPLETION) { 1950 printf("%s: could not open Tx pipe: %s\n", 1951 USBDEVNAME(sc->sc_dev), usbd_errstr(uerror)); 1952 error = EIO; 1953 goto fail; 1954 } 1955 1956 uerror = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 1957 &sc->sc_rx_pipeh); 1958 if (uerror != USBD_NORMAL_COMPLETION) { 1959 printf("%s: could not open Rx pipe: %s\n", 1960 USBDEVNAME(sc->sc_dev), usbd_errstr(uerror)); 1961 error = EIO; 1962 goto fail; 1963 } 1964 1965 /* 1966 * Allocate Tx and Rx xfer queues. 1967 */ 1968 sc->tx_queued = 0; 1969 error = usb_ether_tx_list_init(USBDEV(sc->sc_dev), 1970 sc->tx_data, RT2573_TX_LIST_COUNT, 1971 sc->sc_udev, sc->sc_tx_pipeh, NULL); 1972 if (error != 0) { 1973 printf("%s: could not allocate Tx list\n", 1974 USBDEVNAME(sc->sc_dev)); 1975 goto fail; 1976 } 1977 1978 error = usb_ether_rx_list_init(USBDEV(sc->sc_dev), 1979 sc->rx_data, RT2573_RX_LIST_COUNT, 1980 sc->sc_udev, sc->sc_rx_pipeh); 1981 if (error != 0) { 1982 printf("%s: could not allocate Rx list\n", 1983 USBDEVNAME(sc->sc_dev)); 1984 goto fail; 1985 } 1986 1987 /* 1988 * Start up the receive pipe. 1989 */ 1990 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 1991 data = &sc->rx_data[i]; 1992 1993 (void)usbd_map_buffer_mbuf(data->ue_xfer, data->ue_mbuf); 1994 usbd_setup_xfer(data->ue_xfer, sc->sc_rx_pipeh, data, NULL /* XXX buf */, 1995 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 1996 usbd_transfer(data->ue_xfer); 1997 } 1998 1999 /* update Rx filter */ 2000 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2001 2002 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2003 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2004 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2005 RT2573_DROP_ACKCTS; 2006 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2007 tmp |= RT2573_DROP_TODS; 2008 if (!(ifp->if_flags & IFF_PROMISC)) 2009 tmp |= RT2573_DROP_NOT_TO_ME; 2010 } 2011 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2012 2013 ifp->if_flags &= ~IFF_OACTIVE; 2014 ifp->if_flags |= IFF_RUNNING; 2015 2016 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2017 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2018 else 2019 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2020 2021 return 0; 2022 2023 fail: rum_stop(ifp, 1); 2024 return error; 2025 #undef N 2026 } 2027 2028 Static void 2029 rum_stop(struct ifnet *ifp, int disable) 2030 { 2031 struct rum_softc *sc = ifp->if_softc; 2032 struct ieee80211com *ic = &sc->sc_ic; 2033 uint32_t tmp; 2034 2035 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2036 2037 sc->sc_tx_timer = 0; 2038 ifp->if_timer = 0; 2039 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2040 2041 /* disable Rx */ 2042 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2043 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2044 2045 /* reset ASIC */ 2046 rum_write(sc, RT2573_MAC_CSR1, 3); 2047 rum_write(sc, RT2573_MAC_CSR1, 0); 2048 2049 /* Stop transfers. */ 2050 if (sc->sc_rx_pipeh != NULL) 2051 usbd_abort_pipe(sc->sc_rx_pipeh); 2052 if (sc->sc_tx_pipeh != NULL) 2053 usbd_abort_pipe(sc->sc_tx_pipeh); 2054 2055 /* Free RX/TX resources. */ 2056 rum_free_rx_list(sc); 2057 rum_free_tx_list(sc); 2058 2059 /* Close pipes. */ 2060 if (sc->sc_rx_pipeh != NULL) { 2061 usbd_close_pipe(sc->sc_rx_pipeh); 2062 sc->sc_rx_pipeh = NULL; 2063 } 2064 2065 if (sc->sc_tx_pipeh != NULL) { 2066 usbd_close_pipe(sc->sc_tx_pipeh); 2067 sc->sc_tx_pipeh = NULL; 2068 } 2069 } 2070 2071 Static int 2072 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2073 { 2074 usb_device_request_t req; 2075 uint16_t reg = RT2573_MCU_CODE_BASE; 2076 usbd_status error; 2077 2078 /* copy firmware image into NIC */ 2079 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2080 rum_write(sc, reg, UGETDW(ucode)); 2081 2082 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2083 req.bRequest = RT2573_MCU_CNTL; 2084 USETW(req.wValue, RT2573_MCU_RUN); 2085 USETW(req.wIndex, 0); 2086 USETW(req.wLength, 0); 2087 2088 error = usbd_do_request(sc->sc_udev, &req, NULL); 2089 if (error != 0) { 2090 printf("%s: could not run firmware: %s\n", 2091 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2092 } 2093 return error; 2094 } 2095 2096 Static int 2097 rum_prepare_beacon(struct rum_softc *sc) 2098 { 2099 struct ieee80211com *ic = &sc->sc_ic; 2100 struct rum_tx_desc desc; 2101 struct mbuf *m0; 2102 int rate; 2103 2104 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2105 if (m0 == NULL) { 2106 printf("%s: could not allocate beacon frame\n", 2107 sc->sc_dev.dv_xname); 2108 return ENOBUFS; 2109 } 2110 2111 /* send beacons at the lowest available rate */ 2112 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2113 2114 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2115 m0->m_pkthdr.len, rate); 2116 2117 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2118 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2119 2120 /* copy beacon header and payload into NIC memory */ 2121 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2122 m0->m_pkthdr.len); 2123 2124 m_freem(m0); 2125 2126 return 0; 2127 } 2128 2129 Static void 2130 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2131 { 2132 int i; 2133 2134 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2135 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2136 2137 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2138 2139 /* set rate to some reasonable initial value */ 2140 for (i = ni->ni_rates.rs_nrates - 1; 2141 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2142 i--); 2143 ni->ni_txrate = i; 2144 2145 usb_callout(sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2146 } 2147 2148 Static void 2149 rum_amrr_timeout(void *arg) 2150 { 2151 struct rum_softc *sc = arg; 2152 usb_device_request_t req; 2153 int s; 2154 2155 s = splusb(); 2156 2157 /* 2158 * Asynchronously read statistic registers (cleared by read). 2159 */ 2160 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2161 req.bRequest = RT2573_READ_MULTI_MAC; 2162 USETW(req.wValue, 0); 2163 USETW(req.wIndex, RT2573_STA_CSR0); 2164 USETW(req.wLength, sizeof sc->sta); 2165 2166 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2167 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2168 rum_amrr_update); 2169 (void)usbd_transfer(sc->amrr_xfer); 2170 2171 splx(s); 2172 } 2173 2174 Static void 2175 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2176 usbd_status status) 2177 { 2178 struct rum_softc *sc = (struct rum_softc *)priv; 2179 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2180 2181 if (status != USBD_NORMAL_COMPLETION) { 2182 printf("%s: could not retrieve Tx statistics - cancelling " 2183 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2184 return; 2185 } 2186 2187 /* count TX retry-fail as Tx errors */ 2188 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2189 2190 sc->amn.amn_retrycnt = 2191 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2192 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2193 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2194 2195 sc->amn.amn_txcnt = 2196 sc->amn.amn_retrycnt + 2197 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2198 2199 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2200 2201 usb_callout(sc->sc_amrr_ch, hz, rum_amrr_timeout, sc); 2202 } 2203 2204 int 2205 rum_activate(device_ptr_t self, enum devact act) 2206 { 2207 switch (act) { 2208 case DVACT_ACTIVATE: 2209 return EOPNOTSUPP; 2210 2211 case DVACT_DEACTIVATE: 2212 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2213 break; 2214 } 2215 2216 return 0; 2217 } 2218
Indexes created Wed Oct 01 19:09:53 GMT 2025