if_rum.c revision 1.6.4.3
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.6.4.3 2007/06/17 00:53:36 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 1.6.4.3 2007/06/17 00:53:36 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 if (uaa->iface != NULL) 235 return UMATCH_NONE; 236 237 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 238 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 239 } 240 241 Static int 242 rum_attachhook(void *xsc) 243 { 244 struct rum_softc *sc = xsc; 245 firmware_handle_t fwh; 246 const char *name = "rum-rt2573"; 247 u_char *ucode; 248 size_t size; 249 int error; 250 251 if ((error = firmware_open("rum", name, &fwh)) != 0) { 252 printf("%s: failed loadfirmware of file %s (error %d)\n", 253 USBDEVNAME(sc->sc_dev), name, error); 254 return error; 255 } 256 size = firmware_get_size(fwh); 257 ucode = firmware_malloc(size); 258 if (ucode == NULL) { 259 printf("%s: failed to allocate firmware memory\n", 260 USBDEVNAME(sc->sc_dev)); 261 firmware_close(fwh); 262 return ENOMEM;; 263 } 264 error = firmware_read(fwh, 0, ucode, size); 265 firmware_close(fwh); 266 if (error != 0) { 267 printf("%s: failed to read firmware (error %d)\n", 268 USBDEVNAME(sc->sc_dev), error); 269 firmware_free(ucode, 0); 270 return error; 271 } 272 273 if (rum_load_microcode(sc, ucode, size) != 0) { 274 printf("%s: could not load 8051 microcode\n", 275 USBDEVNAME(sc->sc_dev)); 276 firmware_free(ucode, 0); 277 return ENXIO; 278 } 279 280 firmware_free(ucode, 0); 281 sc->sc_flags |= RT2573_FWLOADED; 282 283 return 0; 284 } 285 286 USB_ATTACH(rum) 287 { 288 USB_ATTACH_START(rum, sc, uaa); 289 struct ieee80211com *ic = &sc->sc_ic; 290 struct ifnet *ifp = &sc->sc_if; 291 usb_interface_descriptor_t *id; 292 usb_endpoint_descriptor_t *ed; 293 usbd_status error; 294 char *devinfop; 295 int i, ntries; 296 uint32_t tmp; 297 298 sc->sc_udev = uaa->device; 299 sc->sc_flags = 0; 300 301 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 302 USB_ATTACH_SETUP; 303 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 304 usbd_devinfo_free(devinfop); 305 306 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 307 printf("%s: could not set configuration no\n", 308 USBDEVNAME(sc->sc_dev)); 309 USB_ATTACH_ERROR_RETURN; 310 } 311 312 /* get the first interface handle */ 313 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 314 &sc->sc_iface); 315 if (error != 0) { 316 printf("%s: could not get interface handle\n", 317 USBDEVNAME(sc->sc_dev)); 318 USB_ATTACH_ERROR_RETURN; 319 } 320 321 /* 322 * Find endpoints. 323 */ 324 id = usbd_get_interface_descriptor(sc->sc_iface); 325 326 sc->sc_rx_no = sc->sc_tx_no = -1; 327 for (i = 0; i < id->bNumEndpoints; i++) { 328 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 329 if (ed == NULL) { 330 printf("%s: no endpoint descriptor for iface %d\n", 331 USBDEVNAME(sc->sc_dev), i); 332 USB_ATTACH_ERROR_RETURN; 333 } 334 335 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 336 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 337 sc->sc_rx_no = ed->bEndpointAddress; 338 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 339 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 340 sc->sc_tx_no = ed->bEndpointAddress; 341 } 342 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 343 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 344 USB_ATTACH_ERROR_RETURN; 345 } 346 347 usb_init_task(&sc->sc_task, rum_task, sc); 348 callout_init(&sc->scan_ch); 349 350 sc->amrr.amrr_min_success_threshold = 1; 351 sc->amrr.amrr_max_success_threshold = 10; 352 callout_init(&sc->amrr_ch); 353 354 /* retrieve RT2573 rev. no */ 355 tmp = 0; /* XXX shut up warning */ 356 for (ntries = 0; ntries < 1000; ntries++) { 357 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 358 break; 359 DELAY(1000); 360 } 361 if (ntries == 1000) { 362 printf("%s: timeout waiting for chip to settle\n", 363 USBDEVNAME(sc->sc_dev)); 364 USB_ATTACH_ERROR_RETURN; 365 } 366 367 /* retrieve MAC address and various other things from EEPROM */ 368 rum_read_eeprom(sc); 369 370 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 371 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 372 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 373 374 ic->ic_ifp = ifp; 375 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 376 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 377 ic->ic_state = IEEE80211_S_INIT; 378 379 /* set device capabilities */ 380 ic->ic_caps = 381 IEEE80211_C_IBSS | /* IBSS mode supported */ 382 IEEE80211_C_MONITOR | /* monitor mode supported */ 383 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 384 IEEE80211_C_TXPMGT | /* tx power management */ 385 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 386 IEEE80211_C_SHSLOT | /* short slot time supported */ 387 IEEE80211_C_WPA; /* 802.11i */ 388 389 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 390 /* set supported .11a rates */ 391 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 392 393 /* set supported .11a channels */ 394 for (i = 34; i <= 46; i += 4) { 395 ic->ic_channels[i].ic_freq = 396 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 397 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 398 } 399 for (i = 36; i <= 64; i += 4) { 400 ic->ic_channels[i].ic_freq = 401 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 402 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 403 } 404 for (i = 100; i <= 140; 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 = 149; i <= 165; 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 } 415 416 /* set supported .11b and .11g rates */ 417 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 418 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 419 420 /* set supported .11b and .11g channels (1 through 14) */ 421 for (i = 1; i <= 14; i++) { 422 ic->ic_channels[i].ic_freq = 423 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 424 ic->ic_channels[i].ic_flags = 425 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 426 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 427 } 428 429 ifp->if_softc = sc; 430 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 431 ifp->if_init = rum_init; 432 ifp->if_ioctl = rum_ioctl; 433 ifp->if_start = rum_start; 434 ifp->if_watchdog = rum_watchdog; 435 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 436 IFQ_SET_READY(&ifp->if_snd); 437 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 438 439 if_attach(ifp); 440 ieee80211_ifattach(ic); 441 442 /* override state transition machine */ 443 sc->sc_newstate = ic->ic_newstate; 444 ic->ic_newstate = rum_newstate; 445 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 446 447 #if NBPFILTER > 0 448 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 449 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 450 451 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 452 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 453 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 454 455 sc->sc_txtap_len = sizeof sc->sc_txtapu; 456 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 457 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 458 #endif 459 460 ieee80211_announce(ic); 461 462 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 463 USBDEV(sc->sc_dev)); 464 465 USB_ATTACH_SUCCESS_RETURN; 466 } 467 468 USB_DETACH(rum) 469 { 470 USB_DETACH_START(rum, sc); 471 struct ieee80211com *ic = &sc->sc_ic; 472 struct ifnet *ifp = &sc->sc_if; 473 int s; 474 475 s = splusb(); 476 477 rum_stop(ifp, 1); 478 usb_rem_task(sc->sc_udev, &sc->sc_task); 479 callout_stop(&sc->scan_ch); 480 callout_stop(&sc->amrr_ch); 481 482 if (sc->sc_rx_pipeh != NULL) 483 usbd_abort_pipe(sc->sc_rx_pipeh); 484 485 if (sc->sc_tx_pipeh != NULL) 486 usbd_abort_pipe(sc->sc_tx_pipeh); 487 488 rum_free_rx_list(sc); 489 rum_free_tx_list(sc); 490 491 if (sc->amrr_xfer != NULL) { 492 usbd_free_xfer(sc->amrr_xfer); 493 sc->amrr_xfer = NULL; 494 } 495 496 if (sc->sc_rx_pipeh != NULL) 497 usbd_close_pipe(sc->sc_rx_pipeh); 498 499 if (sc->sc_tx_pipeh != NULL) 500 usbd_close_pipe(sc->sc_tx_pipeh); 501 502 #if NBPFILTER > 0 503 bpfdetach(ifp); 504 #endif 505 ieee80211_ifdetach(ic); /* free all nodes */ 506 if_detach(ifp); 507 508 splx(s); 509 510 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 511 USBDEV(sc->sc_dev)); 512 513 return 0; 514 } 515 516 Static void 517 rum_free_tx_list(struct rum_softc *sc) 518 { 519 int i; 520 521 usb_ether_tx_list_free(sc->tx_data, RT2573_TX_LIST_COUNT); 522 523 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 524 if (sc->tx_ni[i] != NULL) { 525 ieee80211_free_node(sc->tx_ni[i]); 526 sc->tx_ni[i] = NULL; 527 } 528 } 529 } 530 531 Static void 532 rum_free_rx_list(struct rum_softc *sc) 533 { 534 535 usb_ether_rx_list_free(sc->rx_data, RT2573_RX_LIST_COUNT); 536 } 537 538 Static int 539 rum_media_change(struct ifnet *ifp) 540 { 541 int error; 542 543 error = ieee80211_media_change(ifp); 544 if (error != ENETRESET) 545 return error; 546 547 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 548 rum_init(ifp); 549 550 return 0; 551 } 552 553 /* 554 * This function is called periodically (every 200ms) during scanning to 555 * switch from one channel to another. 556 */ 557 Static void 558 rum_next_scan(void *arg) 559 { 560 struct rum_softc *sc = arg; 561 struct ieee80211com *ic = &sc->sc_ic; 562 563 if (ic->ic_state == IEEE80211_S_SCAN) 564 ieee80211_next_scan(ic); 565 } 566 567 Static void 568 rum_task(void *arg) 569 { 570 struct rum_softc *sc = arg; 571 struct ieee80211com *ic = &sc->sc_ic; 572 enum ieee80211_state ostate; 573 struct ieee80211_node *ni; 574 uint32_t tmp; 575 576 ostate = ic->ic_state; 577 578 switch (sc->sc_state) { 579 case IEEE80211_S_INIT: 580 if (ostate == IEEE80211_S_RUN) { 581 /* abort TSF synchronization */ 582 tmp = rum_read(sc, RT2573_TXRX_CSR9); 583 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 584 } 585 break; 586 587 case IEEE80211_S_SCAN: 588 rum_set_chan(sc, ic->ic_curchan); 589 callout_reset(&sc->scan_ch, hz / 5, rum_next_scan, sc); 590 break; 591 592 case IEEE80211_S_AUTH: 593 rum_set_chan(sc, ic->ic_curchan); 594 break; 595 596 case IEEE80211_S_ASSOC: 597 rum_set_chan(sc, ic->ic_curchan); 598 break; 599 600 case IEEE80211_S_RUN: 601 rum_set_chan(sc, ic->ic_curchan); 602 603 ni = ic->ic_bss; 604 605 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 606 rum_update_slot(sc); 607 rum_enable_mrr(sc); 608 rum_set_txpreamble(sc); 609 rum_set_basicrates(sc); 610 rum_set_bssid(sc, ni->ni_bssid); 611 } 612 613 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 614 ic->ic_opmode == IEEE80211_M_IBSS) 615 rum_prepare_beacon(sc); 616 617 if (ic->ic_opmode != IEEE80211_M_MONITOR) 618 rum_enable_tsf_sync(sc); 619 620 /* enable automatic rate adaptation in STA mode */ 621 if (ic->ic_opmode == IEEE80211_M_STA && 622 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 623 rum_amrr_start(sc, ni); 624 625 break; 626 } 627 628 sc->sc_newstate(ic, sc->sc_state, -1); 629 } 630 631 Static int 632 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 633 { 634 struct rum_softc *sc = ic->ic_ifp->if_softc; 635 636 usb_rem_task(sc->sc_udev, &sc->sc_task); 637 callout_stop(&sc->scan_ch); 638 callout_stop(&sc->amrr_ch); 639 640 /* do it in a process context */ 641 sc->sc_state = nstate; 642 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 643 644 return 0; 645 } 646 647 /* quickly determine if a given rate is CCK or OFDM */ 648 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 649 650 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 651 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 652 653 Static void 654 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 655 { 656 struct ue_chain *data = priv; 657 struct rum_softc *sc = (void *)data->ue_dev; 658 struct ifnet *ifp = &sc->sc_if; 659 int s; 660 661 usbd_unmap_buffer(xfer); 662 663 if (status != USBD_NORMAL_COMPLETION) { 664 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 665 return; 666 667 printf("%s: could not transmit buffer: %s\n", 668 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 669 670 if (status == USBD_STALLED) 671 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 672 673 ifp->if_oerrors++; 674 return; 675 } 676 677 s = splnet(); 678 679 m_freem(data->ue_mbuf); 680 data->ue_mbuf = NULL; 681 ieee80211_free_node(sc->tx_ni[data->ue_idx]); 682 sc->tx_ni[data->ue_idx] = NULL; 683 684 sc->tx_queued--; 685 ifp->if_opackets++; 686 687 DPRINTFN(10, ("tx done\n")); 688 689 sc->sc_tx_timer = 0; 690 ifp->if_flags &= ~IFF_OACTIVE; 691 rum_start(ifp); 692 693 splx(s); 694 } 695 696 Static void 697 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 698 { 699 struct ue_chain *data = priv; 700 struct rum_softc *sc = (void *)data->ue_dev; 701 struct ieee80211com *ic = &sc->sc_ic; 702 struct ifnet *ifp = &sc->sc_if; 703 struct rum_rx_desc *desc; 704 struct ieee80211_frame *wh; 705 struct ieee80211_node *ni; 706 struct mbuf *m; 707 int s, len; 708 709 usbd_unmap_buffer(xfer); 710 711 if (status != USBD_NORMAL_COMPLETION) { 712 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 713 return; 714 715 if (status == USBD_STALLED) 716 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 717 goto skip; 718 } 719 720 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 721 722 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 723 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 724 len)); 725 ifp->if_ierrors++; 726 goto skip; 727 } 728 729 m = data->ue_mbuf; 730 desc = mtod(m, struct rum_rx_desc *); 731 732 if (UGETDW((u_int8_t *)&desc->flags) & RT2573_RX_CRC_ERROR) { 733 /* 734 * This should not happen since we did not request to receive 735 * those frames when we filled RT2573_TXRX_CSR0. 736 */ 737 DPRINTFN(5, ("CRC error\n")); 738 ifp->if_ierrors++; 739 goto skip; 740 } 741 742 /* 743 * Allocate new mbuf cluster for the next transfer. 744 * If that failed, discard current packet and recycle the mbuf. 745 */ 746 if ((data->ue_mbuf = usb_ether_newbuf(NULL)) == NULL) { 747 printf("%s: no memory for rx list -- packet dropped!\n", 748 USBDEVNAME(sc->sc_dev)); 749 ifp->if_ierrors++; 750 data->ue_mbuf = usb_ether_newbuf(m); 751 goto skip; 752 } 753 754 /* finalize mbuf */ 755 m->m_pkthdr.rcvif = ifp; 756 m->m_data = (void *)(desc + 1); 757 m->m_pkthdr.len = m->m_len = UGETW((u_int8_t *)&desc->flags + 2); 758 759 s = splnet(); 760 761 #if NBPFILTER > 0 762 if (sc->sc_drvbpf != NULL) { 763 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 764 765 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 766 tap->wr_rate = rum_rxrate(desc); 767 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 768 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 769 tap->wr_antenna = sc->rx_ant; 770 tap->wr_antsignal = desc->rssi; 771 772 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 773 } 774 #endif 775 776 wh = mtod(m, struct ieee80211_frame *); 777 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 778 779 /* send the frame to the 802.11 layer */ 780 ieee80211_input(ic, m, ni, desc->rssi, 0); 781 782 /* node is no longer needed */ 783 ieee80211_free_node(ni); 784 785 splx(s); 786 787 DPRINTFN(15, ("rx done\n")); 788 789 skip: /* setup a new transfer */ 790 (void)usbd_map_buffer_mbuf(xfer, data->ue_mbuf); 791 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, NULL /* XXX buf */, MCLBYTES, 792 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 793 usbd_transfer(xfer); 794 } 795 796 /* 797 * This function is only used by the Rx radiotap code. It returns the rate at 798 * which a given frame was received. 799 */ 800 #if NBPFILTER > 0 801 Static uint8_t 802 rum_rxrate(struct rum_rx_desc *desc) 803 { 804 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 805 /* reverse function of rum_plcp_signal */ 806 switch (desc->rate) { 807 case 0xb: return 12; 808 case 0xf: return 18; 809 case 0xa: return 24; 810 case 0xe: return 36; 811 case 0x9: return 48; 812 case 0xd: return 72; 813 case 0x8: return 96; 814 case 0xc: return 108; 815 } 816 } else { 817 if (desc->rate == 10) 818 return 2; 819 if (desc->rate == 20) 820 return 4; 821 if (desc->rate == 55) 822 return 11; 823 if (desc->rate == 110) 824 return 22; 825 } 826 return 2; /* should not get there */ 827 } 828 #endif 829 830 /* 831 * Return the expected ack rate for a frame transmitted at rate `rate'. 832 * XXX: this should depend on the destination node basic rate set. 833 */ 834 Static int 835 rum_ack_rate(struct ieee80211com *ic, int rate) 836 { 837 switch (rate) { 838 /* CCK rates */ 839 case 2: 840 return 2; 841 case 4: 842 case 11: 843 case 22: 844 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 845 846 /* OFDM rates */ 847 case 12: 848 case 18: 849 return 12; 850 case 24: 851 case 36: 852 return 24; 853 case 48: 854 case 72: 855 case 96: 856 case 108: 857 return 48; 858 } 859 860 /* default to 1Mbps */ 861 return 2; 862 } 863 864 /* 865 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 866 * The function automatically determines the operating mode depending on the 867 * given rate. `flags' indicates whether short preamble is in use or not. 868 */ 869 Static uint16_t 870 rum_txtime(int len, int rate, uint32_t flags) 871 { 872 uint16_t txtime; 873 874 if (RUM_RATE_IS_OFDM(rate)) { 875 /* IEEE Std 802.11a-1999, pp. 37 */ 876 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 877 txtime = 16 + 4 + 4 * txtime + 6; 878 } else { 879 /* IEEE Std 802.11b-1999, pp. 28 */ 880 txtime = (16 * len + rate - 1) / rate; 881 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 882 txtime += 72 + 24; 883 else 884 txtime += 144 + 48; 885 } 886 return txtime; 887 } 888 889 Static uint8_t 890 rum_plcp_signal(int rate) 891 { 892 switch (rate) { 893 /* CCK rates (returned values are device-dependent) */ 894 case 2: return 0x0; 895 case 4: return 0x1; 896 case 11: return 0x2; 897 case 22: return 0x3; 898 899 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 900 case 12: return 0xb; 901 case 18: return 0xf; 902 case 24: return 0xa; 903 case 36: return 0xe; 904 case 48: return 0x9; 905 case 72: return 0xd; 906 case 96: return 0x8; 907 case 108: return 0xc; 908 909 /* unsupported rates (should not get there) */ 910 default: return 0xff; 911 } 912 } 913 914 Static void 915 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 916 uint32_t flags, uint16_t xflags, int len, int rate) 917 { 918 struct ieee80211com *ic = &sc->sc_ic; 919 uint16_t plcp_length; 920 int remainder; 921 922 desc->flags = htole32(flags); 923 desc->flags |= htole32(RT2573_TX_VALID); 924 desc->flags |= htole32(len << 16); 925 926 desc->xflags = htole16(xflags); 927 928 desc->wme = htole16( 929 RT2573_QID(0) | 930 RT2573_AIFSN(2) | 931 RT2573_LOGCWMIN(4) | 932 RT2573_LOGCWMAX(10)); 933 934 /* setup PLCP fields */ 935 desc->plcp_signal = rum_plcp_signal(rate); 936 desc->plcp_service = 4; 937 938 len += IEEE80211_CRC_LEN; 939 if (RUM_RATE_IS_OFDM(rate)) { 940 desc->flags |= htole32(RT2573_TX_OFDM); 941 942 plcp_length = len & 0xfff; 943 desc->plcp_length_hi = plcp_length >> 6; 944 desc->plcp_length_lo = plcp_length & 0x3f; 945 } else { 946 plcp_length = (16 * len + rate - 1) / rate; 947 if (rate == 22) { 948 remainder = (16 * len) % 22; 949 if (remainder != 0 && remainder < 7) 950 desc->plcp_service |= RT2573_PLCP_LENGEXT; 951 } 952 desc->plcp_length_hi = plcp_length >> 8; 953 desc->plcp_length_lo = plcp_length & 0xff; 954 955 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 956 desc->plcp_signal |= 0x08; 957 } 958 } 959 960 #define RUM_TX_TIMEOUT 5000 961 962 Static int 963 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 964 { 965 struct ieee80211com *ic = &sc->sc_ic; 966 struct rum_tx_desc *desc; 967 struct ue_chain *data; 968 struct ieee80211_frame *wh; 969 uint32_t flags = 0; 970 uint16_t dur; 971 usbd_status error; 972 int xferlen, rate; 973 int ret; 974 975 data = &sc->tx_data[0]; 976 977 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 978 979 data->ue_mbuf = m0; 980 sc->tx_ni[data->ue_idx] = ni; 981 982 wh = mtod(m0, struct ieee80211_frame *); 983 984 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 985 flags |= RT2573_TX_ACK; 986 987 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 988 ic->ic_flags) + sc->sifs; 989 *(uint16_t *)wh->i_dur = htole16(dur); 990 991 /* tell hardware to set timestamp in probe responses */ 992 if ((wh->i_fc[0] & 993 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 994 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 995 flags |= RT2573_TX_TIMESTAMP; 996 } 997 998 #if NBPFILTER > 0 999 if (sc->sc_drvbpf != NULL) { 1000 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1001 1002 tap->wt_flags = 0; 1003 tap->wt_rate = rate; 1004 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1005 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1006 tap->wt_antenna = sc->tx_ant; 1007 1008 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1009 } 1010 #endif 1011 1012 /* Prepend Tx descriptor */ 1013 M_PREPEND(m0, RT2573_TX_DESC_SIZE, M_DONTWAIT); 1014 if (m0 != NULL) 1015 m0 = m_pullup(m0, RT2573_TX_DESC_SIZE); /* just in case */ 1016 if (m0 == NULL) { 1017 return ENOBUFS; 1018 } 1019 desc = mtod(m0, struct rum_tx_desc *); 1020 1021 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1022 1023 /* align end on a 4-bytes boundary */ 1024 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1025 1026 /* 1027 * No space left in the last URB to store the extra 4 bytes, force 1028 * sending of another URB. 1029 */ 1030 if ((xferlen % 64) == 0) 1031 xferlen += 4; 1032 1033 if (m0->m_pkthdr.len != xferlen) { 1034 m_copyback(m0, xferlen - 1, 1, ""); /* expand mbuf chain */ 1035 if (m0->m_pkthdr.len != xferlen) { 1036 m_freem(m0); 1037 return ENOBUFS; 1038 } 1039 } 1040 1041 ret = usb_ether_map_tx_buffer_mbuf(data, m0); 1042 if (ret) { 1043 m_freem(m0); 1044 return ret; 1045 } 1046 1047 DPRINTFN(10, ("sending msg frame len=%lu rate=%u xfer len=%u\n", 1048 (long unsigned int)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1049 rate, xferlen)); 1050 1051 usbd_setup_xfer(data->ue_xfer, sc->sc_tx_pipeh, data, NULL /* XXX buf */, xferlen, 1052 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1053 1054 error = usbd_transfer(data->ue_xfer); 1055 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1056 data->ue_mbuf = NULL; 1057 m_freem(m0); 1058 return error; 1059 } 1060 1061 sc->tx_queued++; 1062 1063 return 0; 1064 } 1065 1066 Static int 1067 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1068 { 1069 struct ieee80211com *ic = &sc->sc_ic; 1070 struct rum_tx_desc *desc; 1071 struct ue_chain *data; 1072 struct ieee80211_frame *wh; 1073 struct ieee80211_key *k; 1074 uint32_t flags = 0; 1075 uint16_t dur; 1076 usbd_status error; 1077 int xferlen, rate; 1078 int ret; 1079 1080 wh = mtod(m0, struct ieee80211_frame *); 1081 1082 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1083 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1084 else 1085 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1086 rate &= IEEE80211_RATE_VAL; 1087 1088 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1089 k = ieee80211_crypto_encap(ic, ni, m0); 1090 if (k == NULL) { 1091 m_freem(m0); 1092 return ENOBUFS; 1093 } 1094 1095 /* packet header may have moved, reset our local pointer */ 1096 wh = mtod(m0, struct ieee80211_frame *); 1097 } 1098 1099 data = &sc->tx_data[0]; 1100 1101 data->ue_mbuf = m0; 1102 sc->tx_ni[data->ue_idx] = ni; 1103 1104 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1105 flags |= RT2573_TX_ACK; 1106 1107 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1108 ic->ic_flags) + sc->sifs; 1109 *(uint16_t *)wh->i_dur = htole16(dur); 1110 } 1111 1112 #if NBPFILTER > 0 1113 if (sc->sc_drvbpf != NULL) { 1114 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1115 1116 tap->wt_flags = 0; 1117 tap->wt_rate = rate; 1118 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1119 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1120 tap->wt_antenna = sc->tx_ant; 1121 1122 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1123 } 1124 #endif 1125 1126 /* Prepend Tx descriptor */ 1127 M_PREPEND(m0, RT2573_TX_DESC_SIZE, M_DONTWAIT); 1128 if (m0 != NULL) 1129 m0 = m_pullup(m0, RT2573_TX_DESC_SIZE); /* just in case */ 1130 if (m0 == NULL) { 1131 return ENOBUFS; 1132 } 1133 desc = mtod(m0, struct rum_tx_desc *); 1134 1135 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1136 1137 /* align end on a 4-bytes boundary */ 1138 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1139 1140 /* 1141 * No space left in the last URB to store the extra 4 bytes, force 1142 * sending of another URB. 1143 */ 1144 if ((xferlen % 64) == 0) 1145 xferlen += 4; 1146 1147 if (m0->m_pkthdr.len != xferlen) { 1148 m_copyback(m0, xferlen - 1, 1, ""); /* expand mbuf chain */ 1149 if (m0->m_pkthdr.len != xferlen) { 1150 m_freem(m0); 1151 return ENOBUFS; 1152 } 1153 } 1154 1155 ret = usb_ether_map_tx_buffer_mbuf(data, m0); 1156 if (ret) { 1157 m_freem(m0); 1158 return ret; 1159 } 1160 1161 DPRINTFN(10, ("sending data frame len=%lu rate=%u xfer len=%u\n", 1162 (long unsigned int)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1163 rate, xferlen)); 1164 1165 usbd_setup_xfer(data->ue_xfer, sc->sc_tx_pipeh, data, NULL /* XXX buf */, xferlen, 1166 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1167 1168 error = usbd_transfer(data->ue_xfer); 1169 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1170 data->ue_mbuf = NULL; 1171 m_freem(m0); 1172 return error; 1173 } 1174 1175 sc->tx_queued++; 1176 1177 return 0; 1178 } 1179 1180 Static void 1181 rum_start(struct ifnet *ifp) 1182 { 1183 struct rum_softc *sc = ifp->if_softc; 1184 struct ieee80211com *ic = &sc->sc_ic; 1185 struct ether_header *eh; 1186 struct ieee80211_node *ni; 1187 struct mbuf *m0; 1188 1189 for (;;) { 1190 IF_POLL(&ic->ic_mgtq, m0); 1191 if (m0 != NULL) { 1192 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1193 ifp->if_flags |= IFF_OACTIVE; 1194 break; 1195 } 1196 IF_DEQUEUE(&ic->ic_mgtq, m0); 1197 1198 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1199 m0->m_pkthdr.rcvif = NULL; 1200 #if NBPFILTER > 0 1201 if (ic->ic_rawbpf != NULL) 1202 bpf_mtap(ic->ic_rawbpf, m0); 1203 #endif 1204 if (rum_tx_mgt(sc, m0, ni) != 0) 1205 break; 1206 1207 } else { 1208 if (ic->ic_state != IEEE80211_S_RUN) 1209 break; 1210 IFQ_POLL(&ifp->if_snd, m0); 1211 if (m0 == NULL) 1212 break; 1213 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1214 ifp->if_flags |= IFF_OACTIVE; 1215 break; 1216 } 1217 IFQ_DEQUEUE(&ifp->if_snd, m0); 1218 if (m0->m_len < sizeof(struct ether_header) && 1219 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1220 continue; 1221 1222 eh = mtod(m0, struct ether_header *); 1223 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1224 if (ni == NULL) { 1225 m_freem(m0); 1226 continue; 1227 } 1228 #if NBPFILTER > 0 1229 if (ifp->if_bpf != NULL) 1230 bpf_mtap(ifp->if_bpf, m0); 1231 #endif 1232 m0 = ieee80211_encap(ic, m0, ni); 1233 if (m0 == NULL) { 1234 ieee80211_free_node(ni); 1235 continue; 1236 } 1237 #if NBPFILTER > 0 1238 if (ic->ic_rawbpf != NULL) 1239 bpf_mtap(ic->ic_rawbpf, m0); 1240 #endif 1241 if (rum_tx_data(sc, m0, ni) != 0) { 1242 ieee80211_free_node(ni); 1243 ifp->if_oerrors++; 1244 break; 1245 } 1246 } 1247 1248 sc->sc_tx_timer = 5; 1249 ifp->if_timer = 1; 1250 } 1251 } 1252 1253 Static void 1254 rum_watchdog(struct ifnet *ifp) 1255 { 1256 struct rum_softc *sc = ifp->if_softc; 1257 struct ieee80211com *ic = &sc->sc_ic; 1258 1259 ifp->if_timer = 0; 1260 1261 if (sc->sc_tx_timer > 0) { 1262 if (--sc->sc_tx_timer == 0) { 1263 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1264 /*rum_init(ifp); XXX needs a process context! */ 1265 ifp->if_oerrors++; 1266 return; 1267 } 1268 ifp->if_timer = 1; 1269 } 1270 1271 ieee80211_watchdog(ic); 1272 } 1273 1274 Static int 1275 rum_ioctl(struct ifnet *ifp, u_long cmd, usb_ioctlarg_t data) 1276 { 1277 struct rum_softc *sc = ifp->if_softc; 1278 struct ieee80211com *ic = &sc->sc_ic; 1279 int s, error = 0; 1280 1281 s = splnet(); 1282 1283 switch (cmd) { 1284 case SIOCSIFFLAGS: 1285 if (ifp->if_flags & IFF_UP) { 1286 if (ifp->if_flags & IFF_RUNNING) 1287 rum_update_promisc(sc); 1288 else 1289 rum_init(ifp); 1290 } else { 1291 if (ifp->if_flags & IFF_RUNNING) 1292 rum_stop(ifp, 1); 1293 } 1294 break; 1295 1296 default: 1297 error = ieee80211_ioctl(ic, cmd, data); 1298 } 1299 1300 if (error == ENETRESET) { 1301 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1302 (IFF_UP | IFF_RUNNING)) 1303 rum_init(ifp); 1304 error = 0; 1305 } 1306 1307 splx(s); 1308 1309 return error; 1310 } 1311 1312 Static void 1313 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1314 { 1315 usb_device_request_t req; 1316 usbd_status error; 1317 1318 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1319 req.bRequest = RT2573_READ_EEPROM; 1320 USETW(req.wValue, 0); 1321 USETW(req.wIndex, addr); 1322 USETW(req.wLength, len); 1323 1324 error = usbd_do_request(sc->sc_udev, &req, buf); 1325 if (error != 0) { 1326 printf("%s: could not read EEPROM: %s\n", 1327 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1328 } 1329 } 1330 1331 Static uint32_t 1332 rum_read(struct rum_softc *sc, uint16_t reg) 1333 { 1334 uint32_t val; 1335 1336 rum_read_multi(sc, reg, &val, sizeof val); 1337 1338 return le32toh(val); 1339 } 1340 1341 Static void 1342 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1343 { 1344 usb_device_request_t req; 1345 usbd_status error; 1346 1347 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1348 req.bRequest = RT2573_READ_MULTI_MAC; 1349 USETW(req.wValue, 0); 1350 USETW(req.wIndex, reg); 1351 USETW(req.wLength, len); 1352 1353 error = usbd_do_request(sc->sc_udev, &req, buf); 1354 if (error != 0) { 1355 printf("%s: could not multi read MAC register: %s\n", 1356 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1357 } 1358 } 1359 1360 Static void 1361 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1362 { 1363 uint32_t tmp = htole32(val); 1364 1365 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1366 } 1367 1368 Static void 1369 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1370 { 1371 usb_device_request_t req; 1372 usbd_status error; 1373 1374 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1375 req.bRequest = RT2573_WRITE_MULTI_MAC; 1376 USETW(req.wValue, 0); 1377 USETW(req.wIndex, reg); 1378 USETW(req.wLength, len); 1379 1380 error = usbd_do_request(sc->sc_udev, &req, buf); 1381 if (error != 0) { 1382 printf("%s: could not multi write MAC register: %s\n", 1383 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1384 } 1385 } 1386 1387 Static void 1388 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1389 { 1390 uint32_t tmp; 1391 int ntries; 1392 1393 for (ntries = 0; ntries < 5; ntries++) { 1394 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1395 break; 1396 } 1397 if (ntries == 5) { 1398 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1399 return; 1400 } 1401 1402 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1403 rum_write(sc, RT2573_PHY_CSR3, tmp); 1404 } 1405 1406 Static uint8_t 1407 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1408 { 1409 uint32_t val; 1410 int ntries; 1411 1412 for (ntries = 0; ntries < 5; ntries++) { 1413 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1414 break; 1415 } 1416 if (ntries == 5) { 1417 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1418 return 0; 1419 } 1420 1421 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1422 rum_write(sc, RT2573_PHY_CSR3, val); 1423 1424 for (ntries = 0; ntries < 100; ntries++) { 1425 val = rum_read(sc, RT2573_PHY_CSR3); 1426 if (!(val & RT2573_BBP_BUSY)) 1427 return val & 0xff; 1428 DELAY(1); 1429 } 1430 1431 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1432 return 0; 1433 } 1434 1435 Static void 1436 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1437 { 1438 uint32_t tmp; 1439 int ntries; 1440 1441 for (ntries = 0; ntries < 5; ntries++) { 1442 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1443 break; 1444 } 1445 if (ntries == 5) { 1446 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1447 return; 1448 } 1449 1450 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1451 (reg & 3); 1452 rum_write(sc, RT2573_PHY_CSR4, tmp); 1453 1454 /* remember last written value in sc */ 1455 sc->rf_regs[reg] = val; 1456 1457 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1458 } 1459 1460 Static void 1461 rum_select_antenna(struct rum_softc *sc) 1462 { 1463 uint8_t bbp4, bbp77; 1464 uint32_t tmp; 1465 1466 bbp4 = rum_bbp_read(sc, 4); 1467 bbp77 = rum_bbp_read(sc, 77); 1468 1469 /* TBD */ 1470 1471 /* make sure Rx is disabled before switching antenna */ 1472 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1473 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1474 1475 rum_bbp_write(sc, 4, bbp4); 1476 rum_bbp_write(sc, 77, bbp77); 1477 1478 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1479 } 1480 1481 /* 1482 * Enable multi-rate retries for frames sent at OFDM rates. 1483 * In 802.11b/g mode, allow fallback to CCK rates. 1484 */ 1485 Static void 1486 rum_enable_mrr(struct rum_softc *sc) 1487 { 1488 struct ieee80211com *ic = &sc->sc_ic; 1489 uint32_t tmp; 1490 1491 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1492 1493 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1494 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1495 tmp |= RT2573_MRR_CCK_FALLBACK; 1496 tmp |= RT2573_MRR_ENABLED; 1497 1498 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1499 } 1500 1501 Static void 1502 rum_set_txpreamble(struct rum_softc *sc) 1503 { 1504 uint32_t tmp; 1505 1506 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1507 1508 tmp &= ~RT2573_SHORT_PREAMBLE; 1509 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1510 tmp |= RT2573_SHORT_PREAMBLE; 1511 1512 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1513 } 1514 1515 Static void 1516 rum_set_basicrates(struct rum_softc *sc) 1517 { 1518 struct ieee80211com *ic = &sc->sc_ic; 1519 1520 /* update basic rate set */ 1521 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1522 /* 11b basic rates: 1, 2Mbps */ 1523 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1524 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1525 /* 11a basic rates: 6, 12, 24Mbps */ 1526 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1527 } else { 1528 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1529 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1530 } 1531 } 1532 1533 /* 1534 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1535 * driver. 1536 */ 1537 Static void 1538 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1539 { 1540 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1541 uint32_t tmp; 1542 1543 /* update all BBP registers that depend on the band */ 1544 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1545 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1546 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1547 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1548 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1549 } 1550 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1551 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1552 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1553 } 1554 1555 sc->bbp17 = bbp17; 1556 rum_bbp_write(sc, 17, bbp17); 1557 rum_bbp_write(sc, 96, bbp96); 1558 rum_bbp_write(sc, 104, bbp104); 1559 1560 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1561 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1562 rum_bbp_write(sc, 75, 0x80); 1563 rum_bbp_write(sc, 86, 0x80); 1564 rum_bbp_write(sc, 88, 0x80); 1565 } 1566 1567 rum_bbp_write(sc, 35, bbp35); 1568 rum_bbp_write(sc, 97, bbp97); 1569 rum_bbp_write(sc, 98, bbp98); 1570 1571 tmp = rum_read(sc, RT2573_PHY_CSR0); 1572 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1573 if (IEEE80211_IS_CHAN_2GHZ(c)) 1574 tmp |= RT2573_PA_PE_2GHZ; 1575 else 1576 tmp |= RT2573_PA_PE_5GHZ; 1577 rum_write(sc, RT2573_PHY_CSR0, tmp); 1578 1579 /* 802.11a uses a 16 microseconds short interframe space */ 1580 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1581 } 1582 1583 Static void 1584 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1585 { 1586 struct ieee80211com *ic = &sc->sc_ic; 1587 const struct rfprog *rfprog; 1588 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1589 int8_t power; 1590 u_int i, chan; 1591 1592 chan = ieee80211_chan2ieee(ic, c); 1593 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1594 return; 1595 1596 /* select the appropriate RF settings based on what EEPROM says */ 1597 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1598 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1599 1600 /* find the settings for this channel (we know it exists) */ 1601 for (i = 0; rfprog[i].chan != chan; i++); 1602 1603 power = sc->txpow[i]; 1604 if (power < 0) { 1605 bbp94 += power; 1606 power = 0; 1607 } else if (power > 31) { 1608 bbp94 += power - 31; 1609 power = 31; 1610 } 1611 1612 /* 1613 * If we are switching from the 2GHz band to the 5GHz band or 1614 * vice-versa, BBP registers need to be reprogrammed. 1615 */ 1616 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1617 rum_select_band(sc, c); 1618 rum_select_antenna(sc); 1619 } 1620 ic->ic_curchan = c; 1621 1622 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1623 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1624 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1625 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1626 1627 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1628 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1629 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1630 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 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 DELAY(10); 1638 1639 /* enable smart mode for MIMO-capable RFs */ 1640 bbp3 = rum_bbp_read(sc, 3); 1641 1642 bbp3 &= ~RT2573_SMART_MODE; 1643 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1644 bbp3 |= RT2573_SMART_MODE; 1645 1646 rum_bbp_write(sc, 3, bbp3); 1647 1648 if (bbp94 != RT2573_BBPR94_DEFAULT) 1649 rum_bbp_write(sc, 94, bbp94); 1650 } 1651 1652 /* 1653 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1654 * and HostAP operating modes. 1655 */ 1656 Static void 1657 rum_enable_tsf_sync(struct rum_softc *sc) 1658 { 1659 struct ieee80211com *ic = &sc->sc_ic; 1660 uint32_t tmp; 1661 1662 if (ic->ic_opmode != IEEE80211_M_STA) { 1663 /* 1664 * Change default 16ms TBTT adjustment to 8ms. 1665 * Must be done before enabling beacon generation. 1666 */ 1667 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1668 } 1669 1670 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1671 1672 /* set beacon interval (in 1/16ms unit) */ 1673 tmp |= ic->ic_bss->ni_intval * 16; 1674 1675 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1676 if (ic->ic_opmode == IEEE80211_M_STA) 1677 tmp |= RT2573_TSF_MODE(1); 1678 else 1679 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1680 1681 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1682 } 1683 1684 Static void 1685 rum_update_slot(struct rum_softc *sc) 1686 { 1687 struct ieee80211com *ic = &sc->sc_ic; 1688 uint8_t slottime; 1689 uint32_t tmp; 1690 1691 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1692 1693 tmp = rum_read(sc, RT2573_MAC_CSR9); 1694 tmp = (tmp & ~0xff) | slottime; 1695 rum_write(sc, RT2573_MAC_CSR9, tmp); 1696 1697 DPRINTF(("setting slot time to %uus\n", slottime)); 1698 } 1699 1700 Static void 1701 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1702 { 1703 uint32_t tmp; 1704 1705 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1706 rum_write(sc, RT2573_MAC_CSR4, tmp); 1707 1708 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1709 rum_write(sc, RT2573_MAC_CSR5, tmp); 1710 } 1711 1712 Static void 1713 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1714 { 1715 uint32_t tmp; 1716 1717 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1718 rum_write(sc, RT2573_MAC_CSR2, tmp); 1719 1720 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1721 rum_write(sc, RT2573_MAC_CSR3, tmp); 1722 } 1723 1724 Static void 1725 rum_update_promisc(struct rum_softc *sc) 1726 { 1727 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1728 uint32_t tmp; 1729 1730 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1731 1732 tmp &= ~RT2573_DROP_NOT_TO_ME; 1733 if (!(ifp->if_flags & IFF_PROMISC)) 1734 tmp |= RT2573_DROP_NOT_TO_ME; 1735 1736 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1737 1738 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1739 "entering" : "leaving")); 1740 } 1741 1742 Static const char * 1743 rum_get_rf(int rev) 1744 { 1745 switch (rev) { 1746 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1747 case RT2573_RF_2528: return "RT2528"; 1748 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1749 case RT2573_RF_5226: return "RT5226"; 1750 default: return "unknown"; 1751 } 1752 } 1753 1754 Static void 1755 rum_read_eeprom(struct rum_softc *sc) 1756 { 1757 struct ieee80211com *ic = &sc->sc_ic; 1758 uint16_t val; 1759 #ifdef RUM_DEBUG 1760 int i; 1761 #endif 1762 1763 /* read MAC/BBP type */ 1764 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1765 sc->macbbp_rev = le16toh(val); 1766 1767 /* read MAC address */ 1768 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1769 1770 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1771 val = le16toh(val); 1772 sc->rf_rev = (val >> 11) & 0x1f; 1773 sc->hw_radio = (val >> 10) & 0x1; 1774 sc->rx_ant = (val >> 4) & 0x3; 1775 sc->tx_ant = (val >> 2) & 0x3; 1776 sc->nb_ant = val & 0x3; 1777 1778 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1779 1780 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1781 val = le16toh(val); 1782 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1783 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1784 1785 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1786 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1787 1788 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1789 val = le16toh(val); 1790 if ((val & 0xff) != 0xff) 1791 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1792 1793 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1794 val = le16toh(val); 1795 if ((val & 0xff) != 0xff) 1796 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1797 1798 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1799 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1800 1801 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1802 val = le16toh(val); 1803 if ((val & 0xff) != 0xff) 1804 sc->rffreq = val & 0xff; 1805 1806 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1807 1808 /* read Tx power for all a/b/g channels */ 1809 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1810 /* XXX default Tx power for 802.11a channels */ 1811 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1812 #ifdef RUM_DEBUG 1813 for (i = 0; i < 14; i++) 1814 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1815 #endif 1816 1817 /* read default values for BBP registers */ 1818 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1819 #ifdef RUM_DEBUG 1820 for (i = 0; i < 14; i++) { 1821 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1822 continue; 1823 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1824 sc->bbp_prom[i].val)); 1825 } 1826 #endif 1827 } 1828 1829 Static int 1830 rum_bbp_init(struct rum_softc *sc) 1831 { 1832 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1833 int i, ntries; 1834 uint8_t val; 1835 1836 /* wait for BBP to be ready */ 1837 for (ntries = 0; ntries < 100; ntries++) { 1838 val = rum_bbp_read(sc, 0); 1839 if (val != 0 && val != 0xff) 1840 break; 1841 DELAY(1000); 1842 } 1843 if (ntries == 100) { 1844 printf("%s: timeout waiting for BBP\n", 1845 USBDEVNAME(sc->sc_dev)); 1846 return EIO; 1847 } 1848 1849 /* initialize BBP registers to default values */ 1850 for (i = 0; i < N(rum_def_bbp); i++) 1851 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1852 1853 /* write vendor-specific BBP values (from EEPROM) */ 1854 for (i = 0; i < 16; i++) { 1855 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1856 continue; 1857 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1858 } 1859 1860 return 0; 1861 #undef N 1862 } 1863 1864 Static int 1865 rum_init(struct ifnet *ifp) 1866 { 1867 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1868 struct rum_softc *sc = ifp->if_softc; 1869 struct ieee80211com *ic = &sc->sc_ic; 1870 struct ue_chain *data; 1871 uint32_t tmp; 1872 usbd_status uerror; 1873 int error; 1874 int i, ntries; 1875 1876 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1877 if (rum_attachhook(sc)) { 1878 error = EIO; 1879 goto fail; 1880 } 1881 } 1882 1883 rum_stop(ifp, 0); 1884 1885 /* initialize MAC registers to default values */ 1886 for (i = 0; i < N(rum_def_mac); i++) 1887 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1888 1889 /* set host ready */ 1890 rum_write(sc, RT2573_MAC_CSR1, 3); 1891 rum_write(sc, RT2573_MAC_CSR1, 0); 1892 1893 /* wait for BBP/RF to wakeup */ 1894 for (ntries = 0; ntries < 1000; ntries++) { 1895 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1896 break; 1897 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1898 DELAY(1000); 1899 } 1900 if (ntries == 1000) { 1901 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1902 USBDEVNAME(sc->sc_dev)); 1903 error = EIO; 1904 goto fail; 1905 } 1906 1907 if ((error = rum_bbp_init(sc)) != 0) 1908 goto fail; 1909 1910 /* select default channel */ 1911 rum_select_band(sc, ic->ic_curchan); 1912 rum_select_antenna(sc); 1913 rum_set_chan(sc, ic->ic_curchan); 1914 1915 /* clear STA registers */ 1916 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1917 1918 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1919 rum_set_macaddr(sc, ic->ic_myaddr); 1920 1921 /* initialize ASIC */ 1922 rum_write(sc, RT2573_MAC_CSR1, 4); 1923 1924 /* 1925 * Allocate xfer for AMRR statistics requests. 1926 */ 1927 sc->amrr_xfer = usbd_alloc_default_xfer(sc->sc_udev); 1928 if (sc->amrr_xfer == NULL) { 1929 printf("%s: could not allocate AMRR xfer\n", 1930 USBDEVNAME(sc->sc_dev)); 1931 goto fail; 1932 } 1933 1934 /* 1935 * Open Tx and Rx USB bulk pipes. 1936 */ 1937 uerror = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1938 &sc->sc_tx_pipeh); 1939 if (uerror != USBD_NORMAL_COMPLETION) { 1940 printf("%s: could not open Tx pipe: %s\n", 1941 USBDEVNAME(sc->sc_dev), usbd_errstr(uerror)); 1942 error = EIO; 1943 goto fail; 1944 } 1945 1946 uerror = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 1947 &sc->sc_rx_pipeh); 1948 if (uerror != USBD_NORMAL_COMPLETION) { 1949 printf("%s: could not open Rx pipe: %s\n", 1950 USBDEVNAME(sc->sc_dev), usbd_errstr(uerror)); 1951 error = EIO; 1952 goto fail; 1953 } 1954 1955 /* 1956 * Allocate Tx and Rx xfer queues. 1957 */ 1958 sc->tx_queued = 0; 1959 error = usb_ether_tx_list_init(USBDEV(sc->sc_dev), 1960 sc->tx_data, RT2573_TX_LIST_COUNT, 1961 sc->sc_udev, sc->sc_tx_pipeh, NULL); 1962 if (error != 0) { 1963 printf("%s: could not allocate Tx list\n", 1964 USBDEVNAME(sc->sc_dev)); 1965 goto fail; 1966 } 1967 1968 error = usb_ether_rx_list_init(USBDEV(sc->sc_dev), 1969 sc->rx_data, RT2573_RX_LIST_COUNT, 1970 sc->sc_udev, sc->sc_rx_pipeh); 1971 if (error != 0) { 1972 printf("%s: could not allocate Rx list\n", 1973 USBDEVNAME(sc->sc_dev)); 1974 goto fail; 1975 } 1976 1977 /* 1978 * Start up the receive pipe. 1979 */ 1980 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 1981 data = &sc->rx_data[i]; 1982 1983 (void)usbd_map_buffer_mbuf(data->ue_xfer, data->ue_mbuf); 1984 usbd_setup_xfer(data->ue_xfer, sc->sc_rx_pipeh, data, NULL /* XXX buf */, 1985 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 1986 usbd_transfer(data->ue_xfer); 1987 } 1988 1989 /* update Rx filter */ 1990 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 1991 1992 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 1993 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1994 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 1995 RT2573_DROP_ACKCTS; 1996 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 1997 tmp |= RT2573_DROP_TODS; 1998 if (!(ifp->if_flags & IFF_PROMISC)) 1999 tmp |= RT2573_DROP_NOT_TO_ME; 2000 } 2001 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2002 2003 ifp->if_flags &= ~IFF_OACTIVE; 2004 ifp->if_flags |= IFF_RUNNING; 2005 2006 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2007 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2008 else 2009 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2010 2011 return 0; 2012 2013 fail: rum_stop(ifp, 1); 2014 return error; 2015 #undef N 2016 } 2017 2018 Static void 2019 rum_stop(struct ifnet *ifp, int disable) 2020 { 2021 struct rum_softc *sc = ifp->if_softc; 2022 struct ieee80211com *ic = &sc->sc_ic; 2023 uint32_t tmp; 2024 2025 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2026 2027 sc->sc_tx_timer = 0; 2028 ifp->if_timer = 0; 2029 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2030 2031 /* disable Rx */ 2032 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2033 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2034 2035 /* reset ASIC */ 2036 rum_write(sc, RT2573_MAC_CSR1, 3); 2037 rum_write(sc, RT2573_MAC_CSR1, 0); 2038 2039 /* Stop transfers. */ 2040 if (sc->sc_rx_pipeh != NULL) 2041 usbd_abort_pipe(sc->sc_rx_pipeh); 2042 if (sc->sc_tx_pipeh != NULL) 2043 usbd_abort_pipe(sc->sc_tx_pipeh); 2044 2045 /* Free RX/TX resources. */ 2046 rum_free_rx_list(sc); 2047 rum_free_tx_list(sc); 2048 2049 /* Close pipes. */ 2050 if (sc->sc_rx_pipeh != NULL) { 2051 usbd_close_pipe(sc->sc_rx_pipeh); 2052 sc->sc_rx_pipeh = NULL; 2053 } 2054 2055 if (sc->sc_tx_pipeh != NULL) { 2056 usbd_close_pipe(sc->sc_tx_pipeh); 2057 sc->sc_tx_pipeh = NULL; 2058 } 2059 } 2060 2061 Static int 2062 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2063 { 2064 usb_device_request_t req; 2065 uint16_t reg = RT2573_MCU_CODE_BASE; 2066 usbd_status error; 2067 2068 /* copy firmware image into NIC */ 2069 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2070 rum_write(sc, reg, UGETDW(ucode)); 2071 2072 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2073 req.bRequest = RT2573_MCU_CNTL; 2074 USETW(req.wValue, RT2573_MCU_RUN); 2075 USETW(req.wIndex, 0); 2076 USETW(req.wLength, 0); 2077 2078 error = usbd_do_request(sc->sc_udev, &req, NULL); 2079 if (error != 0) { 2080 printf("%s: could not run firmware: %s\n", 2081 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2082 } 2083 return error; 2084 } 2085 2086 Static int 2087 rum_prepare_beacon(struct rum_softc *sc) 2088 { 2089 struct ieee80211com *ic = &sc->sc_ic; 2090 struct rum_tx_desc desc; 2091 struct mbuf *m0; 2092 int rate; 2093 2094 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2095 if (m0 == NULL) { 2096 printf("%s: could not allocate beacon frame\n", 2097 sc->sc_dev.dv_xname); 2098 return ENOBUFS; 2099 } 2100 2101 /* send beacons at the lowest available rate */ 2102 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2103 2104 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2105 m0->m_pkthdr.len, rate); 2106 2107 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2108 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2109 2110 /* copy beacon header and payload into NIC memory */ 2111 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2112 m0->m_pkthdr.len); 2113 2114 m_freem(m0); 2115 2116 return 0; 2117 } 2118 2119 Static void 2120 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2121 { 2122 int i; 2123 2124 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2125 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2126 2127 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2128 2129 /* set rate to some reasonable initial value */ 2130 for (i = ni->ni_rates.rs_nrates - 1; 2131 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2132 i--); 2133 ni->ni_txrate = i; 2134 2135 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2136 } 2137 2138 Static void 2139 rum_amrr_timeout(void *arg) 2140 { 2141 struct rum_softc *sc = arg; 2142 usb_device_request_t req; 2143 int s; 2144 2145 s = splusb(); 2146 2147 /* 2148 * Asynchronously read statistic registers (cleared by read). 2149 */ 2150 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2151 req.bRequest = RT2573_READ_MULTI_MAC; 2152 USETW(req.wValue, 0); 2153 USETW(req.wIndex, RT2573_STA_CSR0); 2154 USETW(req.wLength, sizeof sc->sta); 2155 2156 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2157 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2158 rum_amrr_update); 2159 (void)usbd_transfer(sc->amrr_xfer); 2160 2161 splx(s); 2162 } 2163 2164 Static void 2165 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2166 usbd_status status) 2167 { 2168 struct rum_softc *sc = (struct rum_softc *)priv; 2169 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2170 2171 if (status != USBD_NORMAL_COMPLETION) { 2172 printf("%s: could not retrieve Tx statistics - cancelling " 2173 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2174 return; 2175 } 2176 2177 /* count TX retry-fail as Tx errors */ 2178 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2179 2180 sc->amn.amn_retrycnt = 2181 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2182 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2183 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2184 2185 sc->amn.amn_txcnt = 2186 sc->amn.amn_retrycnt + 2187 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2188 2189 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2190 2191 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2192 } 2193 2194 int 2195 rum_activate(device_ptr_t self, enum devact act) 2196 { 2197 switch (act) { 2198 case DVACT_ACTIVATE: 2199 return EOPNOTSUPP; 2200 2201 case DVACT_DEACTIVATE: 2202 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2203 break; 2204 } 2205 2206 return 0; 2207 } 2208
Indexes created Wed Oct 01 19:09:53 GMT 2025