if_rum.c revision 1.6.4.4
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.6.4.4 2007/06/18 13:42:31 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 1.6.4.4 2007/06/18 13:42:31 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 = 0; 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_RT2573 }, 93 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 94 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 95 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 96 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 97 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 98 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 99 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 100 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 101 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 102 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 103 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 104 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 105 { USB_VENDOR_MELCO, USB_PRODUCT_MELCO_SG54HP }, 106 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 107 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 108 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 109 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 110 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 111 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 112 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 113 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 114 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 115 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 116 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 117 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 118 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 119 }; 120 121 Static int rum_attachhook(void *); 122 #if 0 123 Static int rum_alloc_tx_list(struct rum_softc *); 124 #endif 125 Static void rum_free_tx_list(struct rum_softc *); 126 #if 0 127 Static int rum_alloc_rx_list(struct rum_softc *); 128 #endif 129 Static void rum_free_rx_list(struct rum_softc *); 130 Static int rum_media_change(struct ifnet *); 131 Static void rum_next_scan(void *); 132 Static void rum_task(void *); 133 Static int rum_newstate(struct ieee80211com *, 134 enum ieee80211_state, int); 135 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 136 usbd_status); 137 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 138 usbd_status); 139 #if NBPFILTER > 0 140 Static uint8_t rum_rxrate(struct rum_rx_desc *); 141 #endif 142 Static int rum_ack_rate(struct ieee80211com *, int); 143 Static uint16_t rum_txtime(int, int, uint32_t); 144 Static uint8_t rum_plcp_signal(int); 145 Static void rum_setup_tx_desc(struct rum_softc *, 146 struct rum_tx_desc *, uint32_t, uint16_t, int, 147 int); 148 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 149 struct ieee80211_node *); 150 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 151 struct ieee80211_node *); 152 Static void rum_start(struct ifnet *); 153 Static void rum_watchdog(struct ifnet *); 154 Static int rum_ioctl(struct ifnet *, u_long, usb_ioctlarg_t); 155 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 156 int); 157 Static uint32_t rum_read(struct rum_softc *, uint16_t); 158 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 159 int); 160 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 161 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 162 size_t); 163 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 164 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 165 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 166 Static void rum_select_antenna(struct rum_softc *); 167 Static void rum_enable_mrr(struct rum_softc *); 168 Static void rum_set_txpreamble(struct rum_softc *); 169 Static void rum_set_basicrates(struct rum_softc *); 170 Static void rum_select_band(struct rum_softc *, 171 struct ieee80211_channel *); 172 Static void rum_set_chan(struct rum_softc *, 173 struct ieee80211_channel *); 174 Static void rum_enable_tsf_sync(struct rum_softc *); 175 Static void rum_update_slot(struct rum_softc *); 176 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 177 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 178 Static void rum_update_promisc(struct rum_softc *); 179 Static const char *rum_get_rf(int); 180 Static void rum_read_eeprom(struct rum_softc *); 181 Static int rum_bbp_init(struct rum_softc *); 182 Static int rum_init(struct ifnet *); 183 Static void rum_stop(struct ifnet *, int); 184 Static int rum_load_microcode(struct rum_softc *, const u_char *, 185 size_t); 186 Static int rum_prepare_beacon(struct rum_softc *); 187 Static void rum_amrr_start(struct rum_softc *, 188 struct ieee80211_node *); 189 Static void rum_amrr_timeout(void *); 190 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 191 usbd_status status); 192 193 /* 194 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 195 */ 196 static const struct ieee80211_rateset rum_rateset_11a = 197 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 198 199 static const struct ieee80211_rateset rum_rateset_11b = 200 { 4, { 2, 4, 11, 22 } }; 201 202 static const struct ieee80211_rateset rum_rateset_11g = 203 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 204 205 static const struct { 206 uint32_t reg; 207 uint32_t val; 208 } rum_def_mac[] = { 209 RT2573_DEF_MAC 210 }; 211 212 static const struct { 213 uint8_t reg; 214 uint8_t val; 215 } rum_def_bbp[] = { 216 RT2573_DEF_BBP 217 }; 218 219 static const struct rfprog { 220 uint8_t chan; 221 uint32_t r1, r2, r3, r4; 222 } rum_rf5226[] = { 223 RT2573_RF5226 224 }, rum_rf5225[] = { 225 RT2573_RF5225 226 }; 227 228 USB_DECLARE_DRIVER(rum); 229 230 USB_MATCH(rum) 231 { 232 USB_MATCH_START(rum, uaa); 233 234 #ifndef USB_USE_IFATTACH 235 if (uaa->iface != NULL) 236 return UMATCH_NONE; 237 #endif /* USB_USE_IFATTACH */ 238 239 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 240 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 241 } 242 243 Static int 244 rum_attachhook(void *xsc) 245 { 246 struct rum_softc *sc = xsc; 247 firmware_handle_t fwh; 248 const char *name = "rum-rt2573"; 249 u_char *ucode; 250 size_t size; 251 int error; 252 253 if ((error = firmware_open("rum", name, &fwh)) != 0) { 254 printf("%s: failed loadfirmware of file %s (error %d)\n", 255 USBDEVNAME(sc->sc_dev), name, error); 256 return error; 257 } 258 size = firmware_get_size(fwh); 259 ucode = firmware_malloc(size); 260 if (ucode == NULL) { 261 printf("%s: failed to allocate firmware memory\n", 262 USBDEVNAME(sc->sc_dev)); 263 firmware_close(fwh); 264 return ENOMEM;; 265 } 266 error = firmware_read(fwh, 0, ucode, size); 267 firmware_close(fwh); 268 if (error != 0) { 269 printf("%s: failed to read firmware (error %d)\n", 270 USBDEVNAME(sc->sc_dev), error); 271 firmware_free(ucode, 0); 272 return error; 273 } 274 275 if (rum_load_microcode(sc, ucode, size) != 0) { 276 printf("%s: could not load 8051 microcode\n", 277 USBDEVNAME(sc->sc_dev)); 278 firmware_free(ucode, 0); 279 return ENXIO; 280 } 281 282 firmware_free(ucode, 0); 283 sc->sc_flags |= RT2573_FWLOADED; 284 285 return 0; 286 } 287 288 USB_ATTACH(rum) 289 { 290 USB_ATTACH_START(rum, sc, uaa); 291 struct ieee80211com *ic = &sc->sc_ic; 292 struct ifnet *ifp = &sc->sc_if; 293 usb_interface_descriptor_t *id; 294 usb_endpoint_descriptor_t *ed; 295 usbd_status error; 296 char *devinfop; 297 int i, ntries; 298 uint32_t tmp; 299 300 sc->sc_udev = uaa->device; 301 sc->sc_flags = 0; 302 303 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 304 USB_ATTACH_SETUP; 305 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 306 usbd_devinfo_free(devinfop); 307 308 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 309 printf("%s: could not set configuration no\n", 310 USBDEVNAME(sc->sc_dev)); 311 USB_ATTACH_ERROR_RETURN; 312 } 313 314 /* get the first interface handle */ 315 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 316 &sc->sc_iface); 317 if (error != 0) { 318 printf("%s: could not get interface handle\n", 319 USBDEVNAME(sc->sc_dev)); 320 USB_ATTACH_ERROR_RETURN; 321 } 322 323 /* 324 * Find endpoints. 325 */ 326 id = usbd_get_interface_descriptor(sc->sc_iface); 327 328 sc->sc_rx_no = sc->sc_tx_no = -1; 329 for (i = 0; i < id->bNumEndpoints; i++) { 330 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 331 if (ed == NULL) { 332 printf("%s: no endpoint descriptor for iface %d\n", 333 USBDEVNAME(sc->sc_dev), i); 334 USB_ATTACH_ERROR_RETURN; 335 } 336 337 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 338 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 339 sc->sc_rx_no = ed->bEndpointAddress; 340 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 341 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 342 sc->sc_tx_no = ed->bEndpointAddress; 343 } 344 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 345 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 346 USB_ATTACH_ERROR_RETURN; 347 } 348 349 usb_init_task(&sc->sc_task, rum_task, sc); 350 callout_init(&sc->scan_ch); 351 352 sc->amrr.amrr_min_success_threshold = 1; 353 sc->amrr.amrr_max_success_threshold = 10; 354 callout_init(&sc->amrr_ch); 355 356 /* retrieve RT2573 rev. no */ 357 tmp = 0; /* XXX shut up warning */ 358 for (ntries = 0; ntries < 1000; ntries++) { 359 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 360 break; 361 DELAY(1000); 362 } 363 if (ntries == 1000) { 364 printf("%s: timeout waiting for chip to settle\n", 365 USBDEVNAME(sc->sc_dev)); 366 USB_ATTACH_ERROR_RETURN; 367 } 368 369 /* retrieve MAC address and various other things from EEPROM */ 370 rum_read_eeprom(sc); 371 372 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 373 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 374 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 375 376 ic->ic_ifp = ifp; 377 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 378 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 379 ic->ic_state = IEEE80211_S_INIT; 380 381 /* set device capabilities */ 382 ic->ic_caps = 383 IEEE80211_C_IBSS | /* IBSS mode supported */ 384 IEEE80211_C_MONITOR | /* monitor mode supported */ 385 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 386 IEEE80211_C_TXPMGT | /* tx power management */ 387 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 388 IEEE80211_C_SHSLOT | /* short slot time supported */ 389 IEEE80211_C_WPA; /* 802.11i */ 390 391 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 392 /* set supported .11a rates */ 393 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 394 395 /* set supported .11a channels */ 396 for (i = 34; i <= 46; i += 4) { 397 ic->ic_channels[i].ic_freq = 398 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 399 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 400 } 401 for (i = 36; i <= 64; i += 4) { 402 ic->ic_channels[i].ic_freq = 403 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 404 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 405 } 406 for (i = 100; i <= 140; i += 4) { 407 ic->ic_channels[i].ic_freq = 408 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 409 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 410 } 411 for (i = 149; i <= 165; i += 4) { 412 ic->ic_channels[i].ic_freq = 413 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 414 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 415 } 416 } 417 418 /* set supported .11b and .11g rates */ 419 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 420 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 421 422 /* set supported .11b and .11g channels (1 through 14) */ 423 for (i = 1; i <= 14; i++) { 424 ic->ic_channels[i].ic_freq = 425 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 426 ic->ic_channels[i].ic_flags = 427 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 428 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 429 } 430 431 ifp->if_softc = sc; 432 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 433 ifp->if_init = rum_init; 434 ifp->if_ioctl = rum_ioctl; 435 ifp->if_start = rum_start; 436 ifp->if_watchdog = rum_watchdog; 437 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 438 IFQ_SET_READY(&ifp->if_snd); 439 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 440 441 if_attach(ifp); 442 ieee80211_ifattach(ic); 443 444 /* override state transition machine */ 445 sc->sc_newstate = ic->ic_newstate; 446 ic->ic_newstate = rum_newstate; 447 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 448 449 #if NBPFILTER > 0 450 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 451 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 452 453 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 454 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 455 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 456 457 sc->sc_txtap_len = sizeof sc->sc_txtapu; 458 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 459 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 460 #endif 461 462 ieee80211_announce(ic); 463 464 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 465 USBDEV(sc->sc_dev)); 466 467 USB_ATTACH_SUCCESS_RETURN; 468 } 469 470 USB_DETACH(rum) 471 { 472 USB_DETACH_START(rum, sc); 473 struct ieee80211com *ic = &sc->sc_ic; 474 struct ifnet *ifp = &sc->sc_if; 475 int s; 476 477 s = splusb(); 478 479 rum_stop(ifp, 1); 480 usb_rem_task(sc->sc_udev, &sc->sc_task); 481 callout_stop(&sc->scan_ch); 482 callout_stop(&sc->amrr_ch); 483 484 if (sc->sc_rx_pipeh != NULL) 485 usbd_abort_pipe(sc->sc_rx_pipeh); 486 487 if (sc->sc_tx_pipeh != NULL) 488 usbd_abort_pipe(sc->sc_tx_pipeh); 489 490 rum_free_rx_list(sc); 491 rum_free_tx_list(sc); 492 493 if (sc->amrr_xfer != NULL) { 494 usbd_free_xfer(sc->amrr_xfer); 495 sc->amrr_xfer = NULL; 496 } 497 498 if (sc->sc_rx_pipeh != NULL) 499 usbd_close_pipe(sc->sc_rx_pipeh); 500 501 if (sc->sc_tx_pipeh != NULL) 502 usbd_close_pipe(sc->sc_tx_pipeh); 503 504 #if NBPFILTER > 0 505 bpfdetach(ifp); 506 #endif 507 ieee80211_ifdetach(ic); /* free all nodes */ 508 if_detach(ifp); 509 510 splx(s); 511 512 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 513 USBDEV(sc->sc_dev)); 514 515 return 0; 516 } 517 518 Static void 519 rum_free_tx_list(struct rum_softc *sc) 520 { 521 int i; 522 523 usb_ether_tx_list_free(sc->tx_data, RT2573_TX_LIST_COUNT); 524 525 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 526 if (sc->tx_ni[i] != NULL) { 527 ieee80211_free_node(sc->tx_ni[i]); 528 sc->tx_ni[i] = NULL; 529 } 530 } 531 } 532 533 Static void 534 rum_free_rx_list(struct rum_softc *sc) 535 { 536 537 usb_ether_rx_list_free(sc->rx_data, RT2573_RX_LIST_COUNT); 538 } 539 540 Static int 541 rum_media_change(struct ifnet *ifp) 542 { 543 int error; 544 545 error = ieee80211_media_change(ifp); 546 if (error != ENETRESET) 547 return error; 548 549 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 550 rum_init(ifp); 551 552 return 0; 553 } 554 555 /* 556 * This function is called periodically (every 200ms) during scanning to 557 * switch from one channel to another. 558 */ 559 Static void 560 rum_next_scan(void *arg) 561 { 562 struct rum_softc *sc = arg; 563 struct ieee80211com *ic = &sc->sc_ic; 564 565 if (ic->ic_state == IEEE80211_S_SCAN) 566 ieee80211_next_scan(ic); 567 } 568 569 Static void 570 rum_task(void *arg) 571 { 572 struct rum_softc *sc = arg; 573 struct ieee80211com *ic = &sc->sc_ic; 574 enum ieee80211_state ostate; 575 struct ieee80211_node *ni; 576 uint32_t tmp; 577 578 ostate = ic->ic_state; 579 580 switch (sc->sc_state) { 581 case IEEE80211_S_INIT: 582 if (ostate == IEEE80211_S_RUN) { 583 /* abort TSF synchronization */ 584 tmp = rum_read(sc, RT2573_TXRX_CSR9); 585 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 586 } 587 break; 588 589 case IEEE80211_S_SCAN: 590 rum_set_chan(sc, ic->ic_curchan); 591 callout_reset(&sc->scan_ch, hz / 5, rum_next_scan, sc); 592 break; 593 594 case IEEE80211_S_AUTH: 595 rum_set_chan(sc, ic->ic_curchan); 596 break; 597 598 case IEEE80211_S_ASSOC: 599 rum_set_chan(sc, ic->ic_curchan); 600 break; 601 602 case IEEE80211_S_RUN: 603 rum_set_chan(sc, ic->ic_curchan); 604 605 ni = ic->ic_bss; 606 607 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 608 rum_update_slot(sc); 609 rum_enable_mrr(sc); 610 rum_set_txpreamble(sc); 611 rum_set_basicrates(sc); 612 rum_set_bssid(sc, ni->ni_bssid); 613 } 614 615 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 616 ic->ic_opmode == IEEE80211_M_IBSS) 617 rum_prepare_beacon(sc); 618 619 if (ic->ic_opmode != IEEE80211_M_MONITOR) 620 rum_enable_tsf_sync(sc); 621 622 /* enable automatic rate adaptation in STA mode */ 623 if (ic->ic_opmode == IEEE80211_M_STA && 624 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 625 rum_amrr_start(sc, ni); 626 627 break; 628 } 629 630 sc->sc_newstate(ic, sc->sc_state, -1); 631 } 632 633 Static int 634 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 635 { 636 struct rum_softc *sc = ic->ic_ifp->if_softc; 637 638 usb_rem_task(sc->sc_udev, &sc->sc_task); 639 callout_stop(&sc->scan_ch); 640 callout_stop(&sc->amrr_ch); 641 642 /* do it in a process context */ 643 sc->sc_state = nstate; 644 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 645 646 return 0; 647 } 648 649 /* quickly determine if a given rate is CCK or OFDM */ 650 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 651 652 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 653 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 654 655 Static void 656 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 657 { 658 struct ue_chain *data = priv; 659 struct rum_softc *sc = (void *)data->ue_dev; 660 struct ifnet *ifp = &sc->sc_if; 661 int s; 662 663 usbd_unmap_buffer(xfer); 664 665 if (status != USBD_NORMAL_COMPLETION) { 666 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 667 return; 668 669 printf("%s: could not transmit buffer: %s\n", 670 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 671 672 if (status == USBD_STALLED) 673 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 674 675 ifp->if_oerrors++; 676 return; 677 } 678 679 s = splnet(); 680 681 m_freem(data->ue_mbuf); 682 data->ue_mbuf = NULL; 683 ieee80211_free_node(sc->tx_ni[data->ue_idx]); 684 sc->tx_ni[data->ue_idx] = NULL; 685 686 sc->tx_queued--; 687 ifp->if_opackets++; 688 689 DPRINTFN(10, ("tx done\n")); 690 691 sc->sc_tx_timer = 0; 692 ifp->if_flags &= ~IFF_OACTIVE; 693 rum_start(ifp); 694 695 splx(s); 696 } 697 698 Static void 699 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 700 { 701 struct ue_chain *data = priv; 702 struct rum_softc *sc = (void *)data->ue_dev; 703 struct ieee80211com *ic = &sc->sc_ic; 704 struct ifnet *ifp = &sc->sc_if; 705 struct rum_rx_desc *desc; 706 struct ieee80211_frame *wh; 707 struct ieee80211_node *ni; 708 struct mbuf *m; 709 int s, len; 710 711 usbd_unmap_buffer(xfer); 712 713 if (status != USBD_NORMAL_COMPLETION) { 714 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 715 return; 716 717 if (status == USBD_STALLED) 718 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 719 goto skip; 720 } 721 722 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 723 724 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 725 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 726 len)); 727 ifp->if_ierrors++; 728 goto skip; 729 } 730 731 m = data->ue_mbuf; 732 desc = mtod(m, struct rum_rx_desc *); 733 734 if (UGETDW((u_int8_t *)&desc->flags) & RT2573_RX_CRC_ERROR) { 735 /* 736 * This should not happen since we did not request to receive 737 * those frames when we filled RT2573_TXRX_CSR0. 738 */ 739 DPRINTFN(5, ("CRC error\n")); 740 ifp->if_ierrors++; 741 goto skip; 742 } 743 744 /* 745 * Allocate new mbuf cluster for the next transfer. 746 * If that failed, discard current packet and recycle the mbuf. 747 */ 748 if ((data->ue_mbuf = usb_ether_newbuf(NULL)) == NULL) { 749 printf("%s: no memory for rx list -- packet dropped!\n", 750 USBDEVNAME(sc->sc_dev)); 751 ifp->if_ierrors++; 752 data->ue_mbuf = usb_ether_newbuf(m); 753 goto skip; 754 } 755 756 /* finalize mbuf */ 757 m->m_pkthdr.rcvif = ifp; 758 m->m_data = (void *)(desc + 1); 759 m->m_pkthdr.len = m->m_len = UGETW((u_int8_t *)&desc->flags + 2); 760 761 s = splnet(); 762 763 #if NBPFILTER > 0 764 if (sc->sc_drvbpf != NULL) { 765 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 766 767 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 768 tap->wr_rate = rum_rxrate(desc); 769 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 770 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 771 tap->wr_antenna = sc->rx_ant; 772 tap->wr_antsignal = desc->rssi; 773 774 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 775 } 776 #endif 777 778 wh = mtod(m, struct ieee80211_frame *); 779 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 780 781 /* send the frame to the 802.11 layer */ 782 ieee80211_input(ic, m, ni, desc->rssi, 0); 783 784 /* node is no longer needed */ 785 ieee80211_free_node(ni); 786 787 splx(s); 788 789 DPRINTFN(15, ("rx done\n")); 790 791 skip: /* setup a new transfer */ 792 (void)usbd_map_buffer_mbuf(xfer, data->ue_mbuf); 793 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, NULL /* XXX buf */, MCLBYTES, 794 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 795 usbd_transfer(xfer); 796 } 797 798 /* 799 * This function is only used by the Rx radiotap code. It returns the rate at 800 * which a given frame was received. 801 */ 802 #if NBPFILTER > 0 803 Static uint8_t 804 rum_rxrate(struct rum_rx_desc *desc) 805 { 806 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 807 /* reverse function of rum_plcp_signal */ 808 switch (desc->rate) { 809 case 0xb: return 12; 810 case 0xf: return 18; 811 case 0xa: return 24; 812 case 0xe: return 36; 813 case 0x9: return 48; 814 case 0xd: return 72; 815 case 0x8: return 96; 816 case 0xc: return 108; 817 } 818 } else { 819 if (desc->rate == 10) 820 return 2; 821 if (desc->rate == 20) 822 return 4; 823 if (desc->rate == 55) 824 return 11; 825 if (desc->rate == 110) 826 return 22; 827 } 828 return 2; /* should not get there */ 829 } 830 #endif 831 832 /* 833 * Return the expected ack rate for a frame transmitted at rate `rate'. 834 * XXX: this should depend on the destination node basic rate set. 835 */ 836 Static int 837 rum_ack_rate(struct ieee80211com *ic, int rate) 838 { 839 switch (rate) { 840 /* CCK rates */ 841 case 2: 842 return 2; 843 case 4: 844 case 11: 845 case 22: 846 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 847 848 /* OFDM rates */ 849 case 12: 850 case 18: 851 return 12; 852 case 24: 853 case 36: 854 return 24; 855 case 48: 856 case 72: 857 case 96: 858 case 108: 859 return 48; 860 } 861 862 /* default to 1Mbps */ 863 return 2; 864 } 865 866 /* 867 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 868 * The function automatically determines the operating mode depending on the 869 * given rate. `flags' indicates whether short preamble is in use or not. 870 */ 871 Static uint16_t 872 rum_txtime(int len, int rate, uint32_t flags) 873 { 874 uint16_t txtime; 875 876 if (RUM_RATE_IS_OFDM(rate)) { 877 /* IEEE Std 802.11a-1999, pp. 37 */ 878 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 879 txtime = 16 + 4 + 4 * txtime + 6; 880 } else { 881 /* IEEE Std 802.11b-1999, pp. 28 */ 882 txtime = (16 * len + rate - 1) / rate; 883 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 884 txtime += 72 + 24; 885 else 886 txtime += 144 + 48; 887 } 888 return txtime; 889 } 890 891 Static uint8_t 892 rum_plcp_signal(int rate) 893 { 894 switch (rate) { 895 /* CCK rates (returned values are device-dependent) */ 896 case 2: return 0x0; 897 case 4: return 0x1; 898 case 11: return 0x2; 899 case 22: return 0x3; 900 901 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 902 case 12: return 0xb; 903 case 18: return 0xf; 904 case 24: return 0xa; 905 case 36: return 0xe; 906 case 48: return 0x9; 907 case 72: return 0xd; 908 case 96: return 0x8; 909 case 108: return 0xc; 910 911 /* unsupported rates (should not get there) */ 912 default: return 0xff; 913 } 914 } 915 916 Static void 917 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 918 uint32_t flags, uint16_t xflags, int len, int rate) 919 { 920 struct ieee80211com *ic = &sc->sc_ic; 921 uint16_t plcp_length; 922 int remainder; 923 924 desc->flags = htole32(flags); 925 desc->flags |= htole32(RT2573_TX_VALID); 926 desc->flags |= htole32(len << 16); 927 928 desc->xflags = htole16(xflags); 929 930 desc->wme = htole16( 931 RT2573_QID(0) | 932 RT2573_AIFSN(2) | 933 RT2573_LOGCWMIN(4) | 934 RT2573_LOGCWMAX(10)); 935 936 /* setup PLCP fields */ 937 desc->plcp_signal = rum_plcp_signal(rate); 938 desc->plcp_service = 4; 939 940 len += IEEE80211_CRC_LEN; 941 if (RUM_RATE_IS_OFDM(rate)) { 942 desc->flags |= htole32(RT2573_TX_OFDM); 943 944 plcp_length = len & 0xfff; 945 desc->plcp_length_hi = plcp_length >> 6; 946 desc->plcp_length_lo = plcp_length & 0x3f; 947 } else { 948 plcp_length = (16 * len + rate - 1) / rate; 949 if (rate == 22) { 950 remainder = (16 * len) % 22; 951 if (remainder != 0 && remainder < 7) 952 desc->plcp_service |= RT2573_PLCP_LENGEXT; 953 } 954 desc->plcp_length_hi = plcp_length >> 8; 955 desc->plcp_length_lo = plcp_length & 0xff; 956 957 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 958 desc->plcp_signal |= 0x08; 959 } 960 } 961 962 #define RUM_TX_TIMEOUT 5000 963 964 Static int 965 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 966 { 967 struct ieee80211com *ic = &sc->sc_ic; 968 struct rum_tx_desc *desc; 969 struct ue_chain *data; 970 struct ieee80211_frame *wh; 971 uint32_t flags = 0; 972 uint16_t dur; 973 usbd_status error; 974 int xferlen, rate; 975 int ret; 976 977 data = &sc->tx_data[0]; 978 979 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 980 981 data->ue_mbuf = m0; 982 sc->tx_ni[data->ue_idx] = ni; 983 984 wh = mtod(m0, struct ieee80211_frame *); 985 986 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 987 flags |= RT2573_TX_ACK; 988 989 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 990 ic->ic_flags) + sc->sifs; 991 *(uint16_t *)wh->i_dur = htole16(dur); 992 993 /* tell hardware to set timestamp in probe responses */ 994 if ((wh->i_fc[0] & 995 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 996 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 997 flags |= RT2573_TX_TIMESTAMP; 998 } 999 1000 #if NBPFILTER > 0 1001 if (sc->sc_drvbpf != NULL) { 1002 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1003 1004 tap->wt_flags = 0; 1005 tap->wt_rate = rate; 1006 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1007 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1008 tap->wt_antenna = sc->tx_ant; 1009 1010 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1011 } 1012 #endif 1013 1014 /* Prepend Tx descriptor */ 1015 M_PREPEND(m0, RT2573_TX_DESC_SIZE, M_DONTWAIT); 1016 if (m0 != NULL) 1017 m0 = m_pullup(m0, RT2573_TX_DESC_SIZE); /* just in case */ 1018 if (m0 == NULL) { 1019 return ENOBUFS; 1020 } 1021 desc = mtod(m0, struct rum_tx_desc *); 1022 1023 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1024 1025 /* align end on a 4-bytes boundary */ 1026 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1027 1028 /* 1029 * No space left in the last URB to store the extra 4 bytes, force 1030 * sending of another URB. 1031 */ 1032 if ((xferlen % 64) == 0) 1033 xferlen += 4; 1034 1035 if (m0->m_pkthdr.len != xferlen) { 1036 m_copyback(m0, xferlen - 1, 1, ""); /* expand mbuf chain */ 1037 if (m0->m_pkthdr.len != xferlen) { 1038 m_freem(m0); 1039 return ENOBUFS; 1040 } 1041 } 1042 1043 ret = usb_ether_map_tx_buffer_mbuf(data, m0); 1044 if (ret) { 1045 m_freem(m0); 1046 return ret; 1047 } 1048 1049 DPRINTFN(10, ("sending msg frame len=%lu rate=%u xfer len=%u\n", 1050 (long unsigned int)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1051 rate, xferlen)); 1052 1053 usbd_setup_xfer(data->ue_xfer, sc->sc_tx_pipeh, data, NULL /* XXX buf */, xferlen, 1054 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1055 1056 error = usbd_transfer(data->ue_xfer); 1057 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1058 data->ue_mbuf = NULL; 1059 m_freem(m0); 1060 return error; 1061 } 1062 1063 sc->tx_queued++; 1064 1065 return 0; 1066 } 1067 1068 Static int 1069 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1070 { 1071 struct ieee80211com *ic = &sc->sc_ic; 1072 struct rum_tx_desc *desc; 1073 struct ue_chain *data; 1074 struct ieee80211_frame *wh; 1075 struct ieee80211_key *k; 1076 uint32_t flags = 0; 1077 uint16_t dur; 1078 usbd_status error; 1079 int xferlen, rate; 1080 int ret; 1081 1082 wh = mtod(m0, struct ieee80211_frame *); 1083 1084 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1085 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1086 else 1087 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1088 rate &= IEEE80211_RATE_VAL; 1089 1090 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1091 k = ieee80211_crypto_encap(ic, ni, m0); 1092 if (k == NULL) { 1093 m_freem(m0); 1094 return ENOBUFS; 1095 } 1096 1097 /* packet header may have moved, reset our local pointer */ 1098 wh = mtod(m0, struct ieee80211_frame *); 1099 } 1100 1101 data = &sc->tx_data[0]; 1102 1103 data->ue_mbuf = m0; 1104 sc->tx_ni[data->ue_idx] = ni; 1105 1106 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1107 flags |= RT2573_TX_ACK; 1108 1109 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1110 ic->ic_flags) + sc->sifs; 1111 *(uint16_t *)wh->i_dur = htole16(dur); 1112 } 1113 1114 #if NBPFILTER > 0 1115 if (sc->sc_drvbpf != NULL) { 1116 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1117 1118 tap->wt_flags = 0; 1119 tap->wt_rate = rate; 1120 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1121 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1122 tap->wt_antenna = sc->tx_ant; 1123 1124 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1125 } 1126 #endif 1127 1128 /* Prepend Tx descriptor */ 1129 M_PREPEND(m0, RT2573_TX_DESC_SIZE, M_DONTWAIT); 1130 if (m0 != NULL) 1131 m0 = m_pullup(m0, RT2573_TX_DESC_SIZE); /* just in case */ 1132 if (m0 == NULL) { 1133 return ENOBUFS; 1134 } 1135 desc = mtod(m0, struct rum_tx_desc *); 1136 1137 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1138 1139 /* align end on a 4-bytes boundary */ 1140 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1141 1142 /* 1143 * No space left in the last URB to store the extra 4 bytes, force 1144 * sending of another URB. 1145 */ 1146 if ((xferlen % 64) == 0) 1147 xferlen += 4; 1148 1149 if (m0->m_pkthdr.len != xferlen) { 1150 m_copyback(m0, xferlen - 1, 1, ""); /* expand mbuf chain */ 1151 if (m0->m_pkthdr.len != xferlen) { 1152 m_freem(m0); 1153 return ENOBUFS; 1154 } 1155 } 1156 1157 ret = usb_ether_map_tx_buffer_mbuf(data, m0); 1158 if (ret) { 1159 m_freem(m0); 1160 return ret; 1161 } 1162 1163 DPRINTFN(10, ("sending data frame len=%lu rate=%u xfer len=%u\n", 1164 (long unsigned int)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1165 rate, xferlen)); 1166 1167 usbd_setup_xfer(data->ue_xfer, sc->sc_tx_pipeh, data, NULL /* XXX buf */, xferlen, 1168 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1169 1170 error = usbd_transfer(data->ue_xfer); 1171 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1172 data->ue_mbuf = NULL; 1173 m_freem(m0); 1174 return error; 1175 } 1176 1177 sc->tx_queued++; 1178 1179 return 0; 1180 } 1181 1182 Static void 1183 rum_start(struct ifnet *ifp) 1184 { 1185 struct rum_softc *sc = ifp->if_softc; 1186 struct ieee80211com *ic = &sc->sc_ic; 1187 struct ether_header *eh; 1188 struct ieee80211_node *ni; 1189 struct mbuf *m0; 1190 1191 for (;;) { 1192 IF_POLL(&ic->ic_mgtq, m0); 1193 if (m0 != NULL) { 1194 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1195 ifp->if_flags |= IFF_OACTIVE; 1196 break; 1197 } 1198 IF_DEQUEUE(&ic->ic_mgtq, m0); 1199 1200 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1201 m0->m_pkthdr.rcvif = NULL; 1202 #if NBPFILTER > 0 1203 if (ic->ic_rawbpf != NULL) 1204 bpf_mtap(ic->ic_rawbpf, m0); 1205 #endif 1206 if (rum_tx_mgt(sc, m0, ni) != 0) 1207 break; 1208 1209 } else { 1210 if (ic->ic_state != IEEE80211_S_RUN) 1211 break; 1212 IFQ_POLL(&ifp->if_snd, m0); 1213 if (m0 == NULL) 1214 break; 1215 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1216 ifp->if_flags |= IFF_OACTIVE; 1217 break; 1218 } 1219 IFQ_DEQUEUE(&ifp->if_snd, m0); 1220 if (m0->m_len < sizeof(struct ether_header) && 1221 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1222 continue; 1223 1224 eh = mtod(m0, struct ether_header *); 1225 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1226 if (ni == NULL) { 1227 m_freem(m0); 1228 continue; 1229 } 1230 #if NBPFILTER > 0 1231 if (ifp->if_bpf != NULL) 1232 bpf_mtap(ifp->if_bpf, m0); 1233 #endif 1234 m0 = ieee80211_encap(ic, m0, ni); 1235 if (m0 == NULL) { 1236 ieee80211_free_node(ni); 1237 continue; 1238 } 1239 #if NBPFILTER > 0 1240 if (ic->ic_rawbpf != NULL) 1241 bpf_mtap(ic->ic_rawbpf, m0); 1242 #endif 1243 if (rum_tx_data(sc, m0, ni) != 0) { 1244 ieee80211_free_node(ni); 1245 ifp->if_oerrors++; 1246 break; 1247 } 1248 } 1249 1250 sc->sc_tx_timer = 5; 1251 ifp->if_timer = 1; 1252 } 1253 } 1254 1255 Static void 1256 rum_watchdog(struct ifnet *ifp) 1257 { 1258 struct rum_softc *sc = ifp->if_softc; 1259 struct ieee80211com *ic = &sc->sc_ic; 1260 1261 ifp->if_timer = 0; 1262 1263 if (sc->sc_tx_timer > 0) { 1264 if (--sc->sc_tx_timer == 0) { 1265 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1266 /*rum_init(ifp); XXX needs a process context! */ 1267 ifp->if_oerrors++; 1268 return; 1269 } 1270 ifp->if_timer = 1; 1271 } 1272 1273 ieee80211_watchdog(ic); 1274 } 1275 1276 Static int 1277 rum_ioctl(struct ifnet *ifp, u_long cmd, usb_ioctlarg_t data) 1278 { 1279 struct rum_softc *sc = ifp->if_softc; 1280 struct ieee80211com *ic = &sc->sc_ic; 1281 int s, error = 0; 1282 1283 s = splnet(); 1284 1285 switch (cmd) { 1286 case SIOCSIFFLAGS: 1287 if (ifp->if_flags & IFF_UP) { 1288 if (ifp->if_flags & IFF_RUNNING) 1289 rum_update_promisc(sc); 1290 else 1291 rum_init(ifp); 1292 } else { 1293 if (ifp->if_flags & IFF_RUNNING) 1294 rum_stop(ifp, 1); 1295 } 1296 break; 1297 1298 default: 1299 error = ieee80211_ioctl(ic, cmd, data); 1300 } 1301 1302 if (error == ENETRESET) { 1303 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1304 (IFF_UP | IFF_RUNNING)) 1305 rum_init(ifp); 1306 error = 0; 1307 } 1308 1309 splx(s); 1310 1311 return error; 1312 } 1313 1314 Static void 1315 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1316 { 1317 usb_device_request_t req; 1318 usbd_status error; 1319 1320 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1321 req.bRequest = RT2573_READ_EEPROM; 1322 USETW(req.wValue, 0); 1323 USETW(req.wIndex, addr); 1324 USETW(req.wLength, len); 1325 1326 error = usbd_do_request(sc->sc_udev, &req, buf); 1327 if (error != 0) { 1328 printf("%s: could not read EEPROM: %s\n", 1329 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1330 } 1331 } 1332 1333 Static uint32_t 1334 rum_read(struct rum_softc *sc, uint16_t reg) 1335 { 1336 uint32_t val; 1337 1338 rum_read_multi(sc, reg, &val, sizeof val); 1339 1340 return le32toh(val); 1341 } 1342 1343 Static void 1344 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1345 { 1346 usb_device_request_t req; 1347 usbd_status error; 1348 1349 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1350 req.bRequest = RT2573_READ_MULTI_MAC; 1351 USETW(req.wValue, 0); 1352 USETW(req.wIndex, reg); 1353 USETW(req.wLength, len); 1354 1355 error = usbd_do_request(sc->sc_udev, &req, buf); 1356 if (error != 0) { 1357 printf("%s: could not multi read MAC register: %s\n", 1358 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1359 } 1360 } 1361 1362 Static void 1363 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1364 { 1365 uint32_t tmp = htole32(val); 1366 1367 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1368 } 1369 1370 Static void 1371 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1372 { 1373 usb_device_request_t req; 1374 usbd_status error; 1375 1376 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1377 req.bRequest = RT2573_WRITE_MULTI_MAC; 1378 USETW(req.wValue, 0); 1379 USETW(req.wIndex, reg); 1380 USETW(req.wLength, len); 1381 1382 error = usbd_do_request(sc->sc_udev, &req, buf); 1383 if (error != 0) { 1384 printf("%s: could not multi write MAC register: %s\n", 1385 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1386 } 1387 } 1388 1389 Static void 1390 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1391 { 1392 uint32_t tmp; 1393 int ntries; 1394 1395 for (ntries = 0; ntries < 5; ntries++) { 1396 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1397 break; 1398 } 1399 if (ntries == 5) { 1400 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1401 return; 1402 } 1403 1404 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1405 rum_write(sc, RT2573_PHY_CSR3, tmp); 1406 } 1407 1408 Static uint8_t 1409 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1410 { 1411 uint32_t val; 1412 int ntries; 1413 1414 for (ntries = 0; ntries < 5; ntries++) { 1415 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1416 break; 1417 } 1418 if (ntries == 5) { 1419 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1420 return 0; 1421 } 1422 1423 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1424 rum_write(sc, RT2573_PHY_CSR3, val); 1425 1426 for (ntries = 0; ntries < 100; ntries++) { 1427 val = rum_read(sc, RT2573_PHY_CSR3); 1428 if (!(val & RT2573_BBP_BUSY)) 1429 return val & 0xff; 1430 DELAY(1); 1431 } 1432 1433 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1434 return 0; 1435 } 1436 1437 Static void 1438 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1439 { 1440 uint32_t tmp; 1441 int ntries; 1442 1443 for (ntries = 0; ntries < 5; ntries++) { 1444 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1445 break; 1446 } 1447 if (ntries == 5) { 1448 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1449 return; 1450 } 1451 1452 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1453 (reg & 3); 1454 rum_write(sc, RT2573_PHY_CSR4, tmp); 1455 1456 /* remember last written value in sc */ 1457 sc->rf_regs[reg] = val; 1458 1459 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1460 } 1461 1462 Static void 1463 rum_select_antenna(struct rum_softc *sc) 1464 { 1465 uint8_t bbp4, bbp77; 1466 uint32_t tmp; 1467 1468 bbp4 = rum_bbp_read(sc, 4); 1469 bbp77 = rum_bbp_read(sc, 77); 1470 1471 /* TBD */ 1472 1473 /* make sure Rx is disabled before switching antenna */ 1474 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1475 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1476 1477 rum_bbp_write(sc, 4, bbp4); 1478 rum_bbp_write(sc, 77, bbp77); 1479 1480 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1481 } 1482 1483 /* 1484 * Enable multi-rate retries for frames sent at OFDM rates. 1485 * In 802.11b/g mode, allow fallback to CCK rates. 1486 */ 1487 Static void 1488 rum_enable_mrr(struct rum_softc *sc) 1489 { 1490 struct ieee80211com *ic = &sc->sc_ic; 1491 uint32_t tmp; 1492 1493 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1494 1495 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1496 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1497 tmp |= RT2573_MRR_CCK_FALLBACK; 1498 tmp |= RT2573_MRR_ENABLED; 1499 1500 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1501 } 1502 1503 Static void 1504 rum_set_txpreamble(struct rum_softc *sc) 1505 { 1506 uint32_t tmp; 1507 1508 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1509 1510 tmp &= ~RT2573_SHORT_PREAMBLE; 1511 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1512 tmp |= RT2573_SHORT_PREAMBLE; 1513 1514 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1515 } 1516 1517 Static void 1518 rum_set_basicrates(struct rum_softc *sc) 1519 { 1520 struct ieee80211com *ic = &sc->sc_ic; 1521 1522 /* update basic rate set */ 1523 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1524 /* 11b basic rates: 1, 2Mbps */ 1525 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1526 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1527 /* 11a basic rates: 6, 12, 24Mbps */ 1528 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1529 } else { 1530 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1531 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1532 } 1533 } 1534 1535 /* 1536 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1537 * driver. 1538 */ 1539 Static void 1540 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1541 { 1542 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1543 uint32_t tmp; 1544 1545 /* update all BBP registers that depend on the band */ 1546 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1547 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1548 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1549 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1550 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1551 } 1552 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1553 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1554 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1555 } 1556 1557 sc->bbp17 = bbp17; 1558 rum_bbp_write(sc, 17, bbp17); 1559 rum_bbp_write(sc, 96, bbp96); 1560 rum_bbp_write(sc, 104, bbp104); 1561 1562 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1563 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1564 rum_bbp_write(sc, 75, 0x80); 1565 rum_bbp_write(sc, 86, 0x80); 1566 rum_bbp_write(sc, 88, 0x80); 1567 } 1568 1569 rum_bbp_write(sc, 35, bbp35); 1570 rum_bbp_write(sc, 97, bbp97); 1571 rum_bbp_write(sc, 98, bbp98); 1572 1573 tmp = rum_read(sc, RT2573_PHY_CSR0); 1574 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1575 if (IEEE80211_IS_CHAN_2GHZ(c)) 1576 tmp |= RT2573_PA_PE_2GHZ; 1577 else 1578 tmp |= RT2573_PA_PE_5GHZ; 1579 rum_write(sc, RT2573_PHY_CSR0, tmp); 1580 1581 /* 802.11a uses a 16 microseconds short interframe space */ 1582 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1583 } 1584 1585 Static void 1586 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1587 { 1588 struct ieee80211com *ic = &sc->sc_ic; 1589 const struct rfprog *rfprog; 1590 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1591 int8_t power; 1592 u_int i, chan; 1593 1594 chan = ieee80211_chan2ieee(ic, c); 1595 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1596 return; 1597 1598 /* select the appropriate RF settings based on what EEPROM says */ 1599 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1600 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1601 1602 /* find the settings for this channel (we know it exists) */ 1603 for (i = 0; rfprog[i].chan != chan; i++); 1604 1605 power = sc->txpow[i]; 1606 if (power < 0) { 1607 bbp94 += power; 1608 power = 0; 1609 } else if (power > 31) { 1610 bbp94 += power - 31; 1611 power = 31; 1612 } 1613 1614 /* 1615 * If we are switching from the 2GHz band to the 5GHz band or 1616 * vice-versa, BBP registers need to be reprogrammed. 1617 */ 1618 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1619 rum_select_band(sc, c); 1620 rum_select_antenna(sc); 1621 } 1622 ic->ic_curchan = c; 1623 1624 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1625 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1626 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1627 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1628 1629 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1630 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1631 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1632 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1633 1634 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1635 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1636 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1637 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1638 1639 DELAY(10); 1640 1641 /* enable smart mode for MIMO-capable RFs */ 1642 bbp3 = rum_bbp_read(sc, 3); 1643 1644 bbp3 &= ~RT2573_SMART_MODE; 1645 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1646 bbp3 |= RT2573_SMART_MODE; 1647 1648 rum_bbp_write(sc, 3, bbp3); 1649 1650 if (bbp94 != RT2573_BBPR94_DEFAULT) 1651 rum_bbp_write(sc, 94, bbp94); 1652 } 1653 1654 /* 1655 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1656 * and HostAP operating modes. 1657 */ 1658 Static void 1659 rum_enable_tsf_sync(struct rum_softc *sc) 1660 { 1661 struct ieee80211com *ic = &sc->sc_ic; 1662 uint32_t tmp; 1663 1664 if (ic->ic_opmode != IEEE80211_M_STA) { 1665 /* 1666 * Change default 16ms TBTT adjustment to 8ms. 1667 * Must be done before enabling beacon generation. 1668 */ 1669 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1670 } 1671 1672 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1673 1674 /* set beacon interval (in 1/16ms unit) */ 1675 tmp |= ic->ic_bss->ni_intval * 16; 1676 1677 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1678 if (ic->ic_opmode == IEEE80211_M_STA) 1679 tmp |= RT2573_TSF_MODE(1); 1680 else 1681 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1682 1683 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1684 } 1685 1686 Static void 1687 rum_update_slot(struct rum_softc *sc) 1688 { 1689 struct ieee80211com *ic = &sc->sc_ic; 1690 uint8_t slottime; 1691 uint32_t tmp; 1692 1693 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1694 1695 tmp = rum_read(sc, RT2573_MAC_CSR9); 1696 tmp = (tmp & ~0xff) | slottime; 1697 rum_write(sc, RT2573_MAC_CSR9, tmp); 1698 1699 DPRINTF(("setting slot time to %uus\n", slottime)); 1700 } 1701 1702 Static void 1703 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1704 { 1705 uint32_t tmp; 1706 1707 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1708 rum_write(sc, RT2573_MAC_CSR4, tmp); 1709 1710 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1711 rum_write(sc, RT2573_MAC_CSR5, tmp); 1712 } 1713 1714 Static void 1715 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1716 { 1717 uint32_t tmp; 1718 1719 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1720 rum_write(sc, RT2573_MAC_CSR2, tmp); 1721 1722 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1723 rum_write(sc, RT2573_MAC_CSR3, tmp); 1724 } 1725 1726 Static void 1727 rum_update_promisc(struct rum_softc *sc) 1728 { 1729 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1730 uint32_t tmp; 1731 1732 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1733 1734 tmp &= ~RT2573_DROP_NOT_TO_ME; 1735 if (!(ifp->if_flags & IFF_PROMISC)) 1736 tmp |= RT2573_DROP_NOT_TO_ME; 1737 1738 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1739 1740 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1741 "entering" : "leaving")); 1742 } 1743 1744 Static const char * 1745 rum_get_rf(int rev) 1746 { 1747 switch (rev) { 1748 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1749 case RT2573_RF_2528: return "RT2528"; 1750 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1751 case RT2573_RF_5226: return "RT5226"; 1752 default: return "unknown"; 1753 } 1754 } 1755 1756 Static void 1757 rum_read_eeprom(struct rum_softc *sc) 1758 { 1759 struct ieee80211com *ic = &sc->sc_ic; 1760 uint16_t val; 1761 #ifdef RUM_DEBUG 1762 int i; 1763 #endif 1764 1765 /* read MAC/BBP type */ 1766 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1767 sc->macbbp_rev = le16toh(val); 1768 1769 /* read MAC address */ 1770 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1771 1772 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1773 val = le16toh(val); 1774 sc->rf_rev = (val >> 11) & 0x1f; 1775 sc->hw_radio = (val >> 10) & 0x1; 1776 sc->rx_ant = (val >> 4) & 0x3; 1777 sc->tx_ant = (val >> 2) & 0x3; 1778 sc->nb_ant = val & 0x3; 1779 1780 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1781 1782 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1783 val = le16toh(val); 1784 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1785 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1786 1787 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1788 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1789 1790 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1791 val = le16toh(val); 1792 if ((val & 0xff) != 0xff) 1793 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1794 1795 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1796 val = le16toh(val); 1797 if ((val & 0xff) != 0xff) 1798 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1799 1800 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1801 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1802 1803 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1804 val = le16toh(val); 1805 if ((val & 0xff) != 0xff) 1806 sc->rffreq = val & 0xff; 1807 1808 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1809 1810 /* read Tx power for all a/b/g channels */ 1811 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1812 /* XXX default Tx power for 802.11a channels */ 1813 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1814 #ifdef RUM_DEBUG 1815 for (i = 0; i < 14; i++) 1816 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1817 #endif 1818 1819 /* read default values for BBP registers */ 1820 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1821 #ifdef RUM_DEBUG 1822 for (i = 0; i < 14; i++) { 1823 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1824 continue; 1825 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1826 sc->bbp_prom[i].val)); 1827 } 1828 #endif 1829 } 1830 1831 Static int 1832 rum_bbp_init(struct rum_softc *sc) 1833 { 1834 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1835 int i, ntries; 1836 uint8_t val; 1837 1838 /* wait for BBP to be ready */ 1839 for (ntries = 0; ntries < 100; ntries++) { 1840 val = rum_bbp_read(sc, 0); 1841 if (val != 0 && val != 0xff) 1842 break; 1843 DELAY(1000); 1844 } 1845 if (ntries == 100) { 1846 printf("%s: timeout waiting for BBP\n", 1847 USBDEVNAME(sc->sc_dev)); 1848 return EIO; 1849 } 1850 1851 /* initialize BBP registers to default values */ 1852 for (i = 0; i < N(rum_def_bbp); i++) 1853 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1854 1855 /* write vendor-specific BBP values (from EEPROM) */ 1856 for (i = 0; i < 16; i++) { 1857 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1858 continue; 1859 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1860 } 1861 1862 return 0; 1863 #undef N 1864 } 1865 1866 Static int 1867 rum_init(struct ifnet *ifp) 1868 { 1869 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1870 struct rum_softc *sc = ifp->if_softc; 1871 struct ieee80211com *ic = &sc->sc_ic; 1872 struct ue_chain *data; 1873 uint32_t tmp; 1874 usbd_status uerror; 1875 int error; 1876 int i, ntries; 1877 1878 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1879 if (rum_attachhook(sc)) { 1880 error = EIO; 1881 goto fail; 1882 } 1883 } 1884 1885 rum_stop(ifp, 0); 1886 1887 /* initialize MAC registers to default values */ 1888 for (i = 0; i < N(rum_def_mac); i++) 1889 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1890 1891 /* set host ready */ 1892 rum_write(sc, RT2573_MAC_CSR1, 3); 1893 rum_write(sc, RT2573_MAC_CSR1, 0); 1894 1895 /* wait for BBP/RF to wakeup */ 1896 for (ntries = 0; ntries < 1000; ntries++) { 1897 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1898 break; 1899 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1900 DELAY(1000); 1901 } 1902 if (ntries == 1000) { 1903 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1904 USBDEVNAME(sc->sc_dev)); 1905 error = EIO; 1906 goto fail; 1907 } 1908 1909 if ((error = rum_bbp_init(sc)) != 0) 1910 goto fail; 1911 1912 /* select default channel */ 1913 rum_select_band(sc, ic->ic_curchan); 1914 rum_select_antenna(sc); 1915 rum_set_chan(sc, ic->ic_curchan); 1916 1917 /* clear STA registers */ 1918 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1919 1920 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1921 rum_set_macaddr(sc, ic->ic_myaddr); 1922 1923 /* initialize ASIC */ 1924 rum_write(sc, RT2573_MAC_CSR1, 4); 1925 1926 /* 1927 * Allocate xfer for AMRR statistics requests. 1928 */ 1929 sc->amrr_xfer = usbd_alloc_default_xfer(sc->sc_udev); 1930 if (sc->amrr_xfer == NULL) { 1931 printf("%s: could not allocate AMRR xfer\n", 1932 USBDEVNAME(sc->sc_dev)); 1933 goto fail; 1934 } 1935 1936 /* 1937 * Open Tx and Rx USB bulk pipes. 1938 */ 1939 uerror = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1940 &sc->sc_tx_pipeh); 1941 if (uerror != USBD_NORMAL_COMPLETION) { 1942 printf("%s: could not open Tx pipe: %s\n", 1943 USBDEVNAME(sc->sc_dev), usbd_errstr(uerror)); 1944 error = EIO; 1945 goto fail; 1946 } 1947 1948 uerror = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 1949 &sc->sc_rx_pipeh); 1950 if (uerror != USBD_NORMAL_COMPLETION) { 1951 printf("%s: could not open Rx pipe: %s\n", 1952 USBDEVNAME(sc->sc_dev), usbd_errstr(uerror)); 1953 error = EIO; 1954 goto fail; 1955 } 1956 1957 /* 1958 * Allocate Tx and Rx xfer queues. 1959 */ 1960 sc->tx_queued = 0; 1961 error = usb_ether_tx_list_init(USBDEV(sc->sc_dev), 1962 sc->tx_data, RT2573_TX_LIST_COUNT, 1963 sc->sc_udev, sc->sc_tx_pipeh, NULL); 1964 if (error != 0) { 1965 printf("%s: could not allocate Tx list\n", 1966 USBDEVNAME(sc->sc_dev)); 1967 goto fail; 1968 } 1969 1970 error = usb_ether_rx_list_init(USBDEV(sc->sc_dev), 1971 sc->rx_data, RT2573_RX_LIST_COUNT, 1972 sc->sc_udev, sc->sc_rx_pipeh); 1973 if (error != 0) { 1974 printf("%s: could not allocate Rx list\n", 1975 USBDEVNAME(sc->sc_dev)); 1976 goto fail; 1977 } 1978 1979 /* 1980 * Start up the receive pipe. 1981 */ 1982 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 1983 data = &sc->rx_data[i]; 1984 1985 (void)usbd_map_buffer_mbuf(data->ue_xfer, data->ue_mbuf); 1986 usbd_setup_xfer(data->ue_xfer, sc->sc_rx_pipeh, data, NULL /* XXX buf */, 1987 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 1988 usbd_transfer(data->ue_xfer); 1989 } 1990 1991 /* update Rx filter */ 1992 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 1993 1994 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 1995 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1996 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 1997 RT2573_DROP_ACKCTS; 1998 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 1999 tmp |= RT2573_DROP_TODS; 2000 if (!(ifp->if_flags & IFF_PROMISC)) 2001 tmp |= RT2573_DROP_NOT_TO_ME; 2002 } 2003 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2004 2005 ifp->if_flags &= ~IFF_OACTIVE; 2006 ifp->if_flags |= IFF_RUNNING; 2007 2008 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2009 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2010 else 2011 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2012 2013 return 0; 2014 2015 fail: rum_stop(ifp, 1); 2016 return error; 2017 #undef N 2018 } 2019 2020 Static void 2021 rum_stop(struct ifnet *ifp, int disable) 2022 { 2023 struct rum_softc *sc = ifp->if_softc; 2024 struct ieee80211com *ic = &sc->sc_ic; 2025 uint32_t tmp; 2026 2027 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2028 2029 sc->sc_tx_timer = 0; 2030 ifp->if_timer = 0; 2031 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2032 2033 /* disable Rx */ 2034 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2035 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2036 2037 /* reset ASIC */ 2038 rum_write(sc, RT2573_MAC_CSR1, 3); 2039 rum_write(sc, RT2573_MAC_CSR1, 0); 2040 2041 /* Stop transfers. */ 2042 if (sc->sc_rx_pipeh != NULL) 2043 usbd_abort_pipe(sc->sc_rx_pipeh); 2044 if (sc->sc_tx_pipeh != NULL) 2045 usbd_abort_pipe(sc->sc_tx_pipeh); 2046 2047 /* Free RX/TX resources. */ 2048 rum_free_rx_list(sc); 2049 rum_free_tx_list(sc); 2050 2051 /* Close pipes. */ 2052 if (sc->sc_rx_pipeh != NULL) { 2053 usbd_close_pipe(sc->sc_rx_pipeh); 2054 sc->sc_rx_pipeh = NULL; 2055 } 2056 2057 if (sc->sc_tx_pipeh != NULL) { 2058 usbd_close_pipe(sc->sc_tx_pipeh); 2059 sc->sc_tx_pipeh = NULL; 2060 } 2061 } 2062 2063 Static int 2064 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2065 { 2066 usb_device_request_t req; 2067 uint16_t reg = RT2573_MCU_CODE_BASE; 2068 usbd_status error; 2069 2070 /* copy firmware image into NIC */ 2071 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2072 rum_write(sc, reg, UGETDW(ucode)); 2073 2074 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2075 req.bRequest = RT2573_MCU_CNTL; 2076 USETW(req.wValue, RT2573_MCU_RUN); 2077 USETW(req.wIndex, 0); 2078 USETW(req.wLength, 0); 2079 2080 error = usbd_do_request(sc->sc_udev, &req, NULL); 2081 if (error != 0) { 2082 printf("%s: could not run firmware: %s\n", 2083 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2084 } 2085 return error; 2086 } 2087 2088 Static int 2089 rum_prepare_beacon(struct rum_softc *sc) 2090 { 2091 struct ieee80211com *ic = &sc->sc_ic; 2092 struct rum_tx_desc desc; 2093 struct mbuf *m0; 2094 int rate; 2095 2096 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2097 if (m0 == NULL) { 2098 printf("%s: could not allocate beacon frame\n", 2099 sc->sc_dev.dv_xname); 2100 return ENOBUFS; 2101 } 2102 2103 /* send beacons at the lowest available rate */ 2104 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2105 2106 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2107 m0->m_pkthdr.len, rate); 2108 2109 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2110 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2111 2112 /* copy beacon header and payload into NIC memory */ 2113 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2114 m0->m_pkthdr.len); 2115 2116 m_freem(m0); 2117 2118 return 0; 2119 } 2120 2121 Static void 2122 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2123 { 2124 int i; 2125 2126 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2127 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2128 2129 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2130 2131 /* set rate to some reasonable initial value */ 2132 for (i = ni->ni_rates.rs_nrates - 1; 2133 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2134 i--); 2135 ni->ni_txrate = i; 2136 2137 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2138 } 2139 2140 Static void 2141 rum_amrr_timeout(void *arg) 2142 { 2143 struct rum_softc *sc = arg; 2144 usb_device_request_t req; 2145 int s; 2146 2147 s = splusb(); 2148 2149 /* 2150 * Asynchronously read statistic registers (cleared by read). 2151 */ 2152 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2153 req.bRequest = RT2573_READ_MULTI_MAC; 2154 USETW(req.wValue, 0); 2155 USETW(req.wIndex, RT2573_STA_CSR0); 2156 USETW(req.wLength, sizeof sc->sta); 2157 2158 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2159 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2160 rum_amrr_update); 2161 (void)usbd_transfer(sc->amrr_xfer); 2162 2163 splx(s); 2164 } 2165 2166 Static void 2167 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2168 usbd_status status) 2169 { 2170 struct rum_softc *sc = (struct rum_softc *)priv; 2171 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2172 2173 if (status != USBD_NORMAL_COMPLETION) { 2174 printf("%s: could not retrieve Tx statistics - cancelling " 2175 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2176 return; 2177 } 2178 2179 /* count TX retry-fail as Tx errors */ 2180 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2181 2182 sc->amn.amn_retrycnt = 2183 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2184 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2185 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2186 2187 sc->amn.amn_txcnt = 2188 sc->amn.amn_retrycnt + 2189 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2190 2191 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2192 2193 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2194 } 2195 2196 int 2197 rum_activate(device_ptr_t self, enum devact act) 2198 { 2199 switch (act) { 2200 case DVACT_ACTIVATE: 2201 return EOPNOTSUPP; 2202 2203 case DVACT_DEACTIVATE: 2204 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2205 break; 2206 } 2207 2208 return 0; 2209 } 2210
Indexes created Wed Oct 01 19:09:53 GMT 2025