if_rum.c revision 1.3.2.3
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.3.2.3 2007/05/12 17:08:13 snj 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 1.3.2.3 2007/05/12 17:08:13 snj 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 73 #include <dev/usb/if_rumreg.h> 74 #include <dev/usb/if_rumvar.h> 75 76 #ifdef USB_DEBUG 77 #define RUM_DEBUG 78 #endif 79 80 #ifdef RUM_DEBUG 81 #define DPRINTF(x) do { if (rum_debug) logprintf x; } while (0) 82 #define DPRINTFN(n, x) do { if (rum_debug >= (n)) logprintf x; } while (0) 83 int rum_debug = 0; 84 #else 85 #define DPRINTF(x) 86 #define DPRINTFN(n, x) 87 #endif 88 89 /* various supported device vendors/products */ 90 static const struct usb_devno rum_devs[] = { 91 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_RT2573 }, 92 { USB_VENDOR_ASUSTEK, USB_PRODUCT_ASUSTEK_WL167G_2 }, 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_MSI, USB_PRODUCT_MSI_RT2573 }, 106 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 107 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 108 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 109 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 110 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 111 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 112 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 113 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 114 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 115 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 116 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 117 }; 118 119 Static int rum_attachhook(void *); 120 Static int rum_alloc_tx_list(struct rum_softc *); 121 Static void rum_free_tx_list(struct rum_softc *); 122 Static int rum_alloc_rx_list(struct rum_softc *); 123 Static void rum_free_rx_list(struct rum_softc *); 124 Static int rum_media_change(struct ifnet *); 125 Static void rum_next_scan(void *); 126 Static void rum_task(void *); 127 Static int rum_newstate(struct ieee80211com *, 128 enum ieee80211_state, int); 129 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 130 usbd_status); 131 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 132 usbd_status); 133 #if NBPFILTER > 0 134 Static uint8_t rum_rxrate(struct rum_rx_desc *); 135 #endif 136 Static int rum_ack_rate(struct ieee80211com *, int); 137 Static uint16_t rum_txtime(int, int, uint32_t); 138 Static uint8_t rum_plcp_signal(int); 139 Static void rum_setup_tx_desc(struct rum_softc *, 140 struct rum_tx_desc *, uint32_t, uint16_t, int, 141 int); 142 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 143 struct ieee80211_node *); 144 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 145 struct ieee80211_node *); 146 Static void rum_start(struct ifnet *); 147 Static void rum_watchdog(struct ifnet *); 148 Static int rum_ioctl(struct ifnet *, u_long, caddr_t); 149 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 150 int); 151 Static uint32_t rum_read(struct rum_softc *, uint16_t); 152 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 153 int); 154 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 155 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 156 size_t); 157 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 158 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 159 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 160 Static void rum_select_antenna(struct rum_softc *); 161 Static void rum_enable_mrr(struct rum_softc *); 162 Static void rum_set_txpreamble(struct rum_softc *); 163 Static void rum_set_basicrates(struct rum_softc *); 164 Static void rum_select_band(struct rum_softc *, 165 struct ieee80211_channel *); 166 Static void rum_set_chan(struct rum_softc *, 167 struct ieee80211_channel *); 168 Static void rum_enable_tsf_sync(struct rum_softc *); 169 Static void rum_update_slot(struct rum_softc *); 170 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 171 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 172 Static void rum_update_promisc(struct rum_softc *); 173 Static const char *rum_get_rf(int); 174 Static void rum_read_eeprom(struct rum_softc *); 175 Static int rum_bbp_init(struct rum_softc *); 176 Static int rum_init(struct ifnet *); 177 Static void rum_stop(struct ifnet *, int); 178 Static int rum_load_microcode(struct rum_softc *, const u_char *, 179 size_t); 180 Static int rum_prepare_beacon(struct rum_softc *); 181 Static void rum_amrr_start(struct rum_softc *, 182 struct ieee80211_node *); 183 Static void rum_amrr_timeout(void *); 184 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 185 usbd_status status); 186 187 /* 188 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 189 */ 190 static const struct ieee80211_rateset rum_rateset_11a = 191 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 192 193 static const struct ieee80211_rateset rum_rateset_11b = 194 { 4, { 2, 4, 11, 22 } }; 195 196 static const struct ieee80211_rateset rum_rateset_11g = 197 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 198 199 static const struct { 200 uint32_t reg; 201 uint32_t val; 202 } rum_def_mac[] = { 203 RT2573_DEF_MAC 204 }; 205 206 static const struct { 207 uint8_t reg; 208 uint8_t val; 209 } rum_def_bbp[] = { 210 RT2573_DEF_BBP 211 }; 212 213 static const struct rfprog { 214 uint8_t chan; 215 uint32_t r1, r2, r3, r4; 216 } rum_rf5226[] = { 217 RT2573_RF5226 218 }, rum_rf5225[] = { 219 RT2573_RF5225 220 }; 221 222 USB_DECLARE_DRIVER(rum); 223 224 USB_MATCH(rum) 225 { 226 USB_MATCH_START(rum, uaa); 227 228 if (uaa->iface != NULL) 229 return UMATCH_NONE; 230 231 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 232 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 233 } 234 235 Static int 236 rum_attachhook(void *xsc) 237 { 238 struct rum_softc *sc = xsc; 239 firmware_handle_t fwh; 240 const char *name = "rum-rt2573"; 241 u_char *ucode; 242 size_t size; 243 int error; 244 245 if ((error = firmware_open("rum", name, &fwh)) != 0) { 246 printf("%s: failed loadfirmware of file %s (error %d)\n", 247 USBDEVNAME(sc->sc_dev), name, error); 248 return error; 249 } 250 size = firmware_get_size(fwh); 251 ucode = firmware_malloc(size); 252 if (ucode == NULL) { 253 printf("%s: failed to allocate firmware memory\n", 254 USBDEVNAME(sc->sc_dev)); 255 firmware_close(fwh); 256 return ENOMEM;; 257 } 258 error = firmware_read(fwh, 0, ucode, size); 259 firmware_close(fwh); 260 if (error != 0) { 261 printf("%s: failed to read firmware (error %d)\n", 262 USBDEVNAME(sc->sc_dev), error); 263 firmware_free(ucode, 0); 264 return error; 265 } 266 267 if (rum_load_microcode(sc, ucode, size) != 0) { 268 printf("%s: could not load 8051 microcode\n", 269 USBDEVNAME(sc->sc_dev)); 270 firmware_free(ucode, 0); 271 return ENXIO; 272 } 273 274 firmware_free(ucode, 0); 275 sc->sc_flags |= RT2573_FWLOADED; 276 277 return 0; 278 } 279 280 USB_ATTACH(rum) 281 { 282 USB_ATTACH_START(rum, sc, uaa); 283 struct ieee80211com *ic = &sc->sc_ic; 284 struct ifnet *ifp = &sc->sc_if; 285 usb_interface_descriptor_t *id; 286 usb_endpoint_descriptor_t *ed; 287 usbd_status error; 288 char *devinfop; 289 int i, ntries; 290 uint32_t tmp; 291 292 sc->sc_udev = uaa->device; 293 sc->sc_flags = 0; 294 295 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 296 USB_ATTACH_SETUP; 297 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 298 usbd_devinfo_free(devinfop); 299 300 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 301 printf("%s: could not set configuration no\n", 302 USBDEVNAME(sc->sc_dev)); 303 USB_ATTACH_ERROR_RETURN; 304 } 305 306 /* get the first interface handle */ 307 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 308 &sc->sc_iface); 309 if (error != 0) { 310 printf("%s: could not get interface handle\n", 311 USBDEVNAME(sc->sc_dev)); 312 USB_ATTACH_ERROR_RETURN; 313 } 314 315 /* 316 * Find endpoints. 317 */ 318 id = usbd_get_interface_descriptor(sc->sc_iface); 319 320 sc->sc_rx_no = sc->sc_tx_no = -1; 321 for (i = 0; i < id->bNumEndpoints; i++) { 322 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 323 if (ed == NULL) { 324 printf("%s: no endpoint descriptor for iface %d\n", 325 USBDEVNAME(sc->sc_dev), i); 326 USB_ATTACH_ERROR_RETURN; 327 } 328 329 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 330 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 331 sc->sc_rx_no = ed->bEndpointAddress; 332 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 333 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 334 sc->sc_tx_no = ed->bEndpointAddress; 335 } 336 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 337 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 338 USB_ATTACH_ERROR_RETURN; 339 } 340 341 usb_init_task(&sc->sc_task, rum_task, sc); 342 callout_init(&sc->scan_ch); 343 344 sc->amrr.amrr_min_success_threshold = 1; 345 sc->amrr.amrr_max_success_threshold = 10; 346 callout_init(&sc->amrr_ch); 347 348 /* retrieve RT2573 rev. no */ 349 for (ntries = 0; ntries < 1000; ntries++) { 350 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 351 break; 352 DELAY(1000); 353 } 354 if (ntries == 1000) { 355 printf("%s: timeout waiting for chip to settle\n", 356 USBDEVNAME(sc->sc_dev)); 357 USB_ATTACH_ERROR_RETURN; 358 } 359 360 /* retrieve MAC address and various other things from EEPROM */ 361 rum_read_eeprom(sc); 362 363 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 364 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 365 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 366 367 ic->ic_ifp = ifp; 368 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 369 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 370 ic->ic_state = IEEE80211_S_INIT; 371 372 /* set device capabilities */ 373 ic->ic_caps = 374 IEEE80211_C_IBSS | /* IBSS mode supported */ 375 IEEE80211_C_MONITOR | /* monitor mode supported */ 376 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 377 IEEE80211_C_TXPMGT | /* tx power management */ 378 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 379 IEEE80211_C_SHSLOT | /* short slot time supported */ 380 IEEE80211_C_WPA; /* 802.11i */ 381 382 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 383 /* set supported .11a rates */ 384 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 385 386 /* set supported .11a channels */ 387 for (i = 34; i <= 46; i += 4) { 388 ic->ic_channels[i].ic_freq = 389 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 390 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 391 } 392 for (i = 36; i <= 64; i += 4) { 393 ic->ic_channels[i].ic_freq = 394 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 395 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 396 } 397 for (i = 100; i <= 140; i += 4) { 398 ic->ic_channels[i].ic_freq = 399 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 400 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 401 } 402 for (i = 149; i <= 165; i += 4) { 403 ic->ic_channels[i].ic_freq = 404 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 405 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 406 } 407 } 408 409 /* set supported .11b and .11g rates */ 410 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 411 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 412 413 /* set supported .11b and .11g channels (1 through 14) */ 414 for (i = 1; i <= 14; i++) { 415 ic->ic_channels[i].ic_freq = 416 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 417 ic->ic_channels[i].ic_flags = 418 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 419 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 420 } 421 422 ifp->if_softc = sc; 423 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 424 ifp->if_init = rum_init; 425 ifp->if_ioctl = rum_ioctl; 426 ifp->if_start = rum_start; 427 ifp->if_watchdog = rum_watchdog; 428 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 429 IFQ_SET_READY(&ifp->if_snd); 430 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 431 432 if_attach(ifp); 433 ieee80211_ifattach(ic); 434 435 /* override state transition machine */ 436 sc->sc_newstate = ic->ic_newstate; 437 ic->ic_newstate = rum_newstate; 438 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 439 440 #if NBPFILTER > 0 441 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 442 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 443 444 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 445 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 446 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 447 448 sc->sc_txtap_len = sizeof sc->sc_txtapu; 449 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 450 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 451 #endif 452 453 ieee80211_announce(ic); 454 455 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 456 USBDEV(sc->sc_dev)); 457 458 USB_ATTACH_SUCCESS_RETURN; 459 } 460 461 USB_DETACH(rum) 462 { 463 USB_DETACH_START(rum, sc); 464 struct ieee80211com *ic = &sc->sc_ic; 465 struct ifnet *ifp = &sc->sc_if; 466 int s; 467 468 s = splusb(); 469 470 rum_stop(ifp, 1); 471 usb_rem_task(sc->sc_udev, &sc->sc_task); 472 callout_stop(&sc->scan_ch); 473 callout_stop(&sc->amrr_ch); 474 475 if (sc->amrr_xfer != NULL) { 476 usbd_free_xfer(sc->amrr_xfer); 477 sc->amrr_xfer = NULL; 478 } 479 480 if (sc->sc_rx_pipeh != NULL) { 481 usbd_abort_pipe(sc->sc_rx_pipeh); 482 usbd_close_pipe(sc->sc_rx_pipeh); 483 } 484 485 if (sc->sc_tx_pipeh != NULL) { 486 usbd_abort_pipe(sc->sc_tx_pipeh); 487 usbd_close_pipe(sc->sc_tx_pipeh); 488 } 489 490 rum_free_rx_list(sc); 491 rum_free_tx_list(sc); 492 493 #if NBPFILTER > 0 494 bpfdetach(ifp); 495 #endif 496 ieee80211_ifdetach(ic); /* free all nodes */ 497 if_detach(ifp); 498 499 splx(s); 500 501 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 502 USBDEV(sc->sc_dev)); 503 504 return 0; 505 } 506 507 Static int 508 rum_alloc_tx_list(struct rum_softc *sc) 509 { 510 struct rum_tx_data *data; 511 int i, error; 512 513 sc->tx_queued = 0; 514 515 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 516 data = &sc->tx_data[i]; 517 518 data->sc = sc; 519 520 data->xfer = usbd_alloc_xfer(sc->sc_udev); 521 if (data->xfer == NULL) { 522 printf("%s: could not allocate tx xfer\n", 523 USBDEVNAME(sc->sc_dev)); 524 error = ENOMEM; 525 goto fail; 526 } 527 528 data->buf = usbd_alloc_buffer(data->xfer, 529 RT2573_TX_DESC_SIZE + MCLBYTES); 530 if (data->buf == NULL) { 531 printf("%s: could not allocate tx buffer\n", 532 USBDEVNAME(sc->sc_dev)); 533 error = ENOMEM; 534 goto fail; 535 } 536 537 /* clean Tx descriptor */ 538 bzero(data->buf, RT2573_TX_DESC_SIZE); 539 } 540 541 return 0; 542 543 fail: rum_free_tx_list(sc); 544 return error; 545 } 546 547 Static void 548 rum_free_tx_list(struct rum_softc *sc) 549 { 550 struct rum_tx_data *data; 551 int i; 552 553 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 554 data = &sc->tx_data[i]; 555 556 if (data->xfer != NULL) { 557 usbd_free_xfer(data->xfer); 558 data->xfer = NULL; 559 } 560 561 if (data->ni != NULL) { 562 ieee80211_free_node(data->ni); 563 data->ni = NULL; 564 } 565 } 566 } 567 568 Static int 569 rum_alloc_rx_list(struct rum_softc *sc) 570 { 571 struct rum_rx_data *data; 572 int i, error; 573 574 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 575 data = &sc->rx_data[i]; 576 577 data->sc = sc; 578 579 data->xfer = usbd_alloc_xfer(sc->sc_udev); 580 if (data->xfer == NULL) { 581 printf("%s: could not allocate rx xfer\n", 582 USBDEVNAME(sc->sc_dev)); 583 error = ENOMEM; 584 goto fail; 585 } 586 587 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 588 printf("%s: could not allocate rx buffer\n", 589 USBDEVNAME(sc->sc_dev)); 590 error = ENOMEM; 591 goto fail; 592 } 593 594 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 595 if (data->m == NULL) { 596 printf("%s: could not allocate rx mbuf\n", 597 USBDEVNAME(sc->sc_dev)); 598 error = ENOMEM; 599 goto fail; 600 } 601 602 MCLGET(data->m, M_DONTWAIT); 603 if (!(data->m->m_flags & M_EXT)) { 604 printf("%s: could not allocate rx mbuf cluster\n", 605 USBDEVNAME(sc->sc_dev)); 606 error = ENOMEM; 607 goto fail; 608 } 609 610 data->buf = mtod(data->m, uint8_t *); 611 } 612 613 return 0; 614 615 fail: rum_free_tx_list(sc); 616 return error; 617 } 618 619 Static void 620 rum_free_rx_list(struct rum_softc *sc) 621 { 622 struct rum_rx_data *data; 623 int i; 624 625 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 626 data = &sc->rx_data[i]; 627 628 if (data->xfer != NULL) { 629 usbd_free_xfer(data->xfer); 630 data->xfer = NULL; 631 } 632 633 if (data->m != NULL) { 634 m_freem(data->m); 635 data->m = NULL; 636 } 637 } 638 } 639 640 Static int 641 rum_media_change(struct ifnet *ifp) 642 { 643 int error; 644 645 error = ieee80211_media_change(ifp); 646 if (error != ENETRESET) 647 return error; 648 649 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 650 rum_init(ifp); 651 652 return 0; 653 } 654 655 /* 656 * This function is called periodically (every 200ms) during scanning to 657 * switch from one channel to another. 658 */ 659 Static void 660 rum_next_scan(void *arg) 661 { 662 struct rum_softc *sc = arg; 663 struct ieee80211com *ic = &sc->sc_ic; 664 665 if (ic->ic_state == IEEE80211_S_SCAN) 666 ieee80211_next_scan(ic); 667 } 668 669 Static void 670 rum_task(void *arg) 671 { 672 struct rum_softc *sc = arg; 673 struct ieee80211com *ic = &sc->sc_ic; 674 enum ieee80211_state ostate; 675 struct ieee80211_node *ni; 676 uint32_t tmp; 677 678 ostate = ic->ic_state; 679 680 switch (sc->sc_state) { 681 case IEEE80211_S_INIT: 682 if (ostate == IEEE80211_S_RUN) { 683 /* abort TSF synchronization */ 684 tmp = rum_read(sc, RT2573_TXRX_CSR9); 685 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 686 } 687 break; 688 689 case IEEE80211_S_SCAN: 690 rum_set_chan(sc, ic->ic_curchan); 691 callout_reset(&sc->scan_ch, hz / 5, rum_next_scan, sc); 692 break; 693 694 case IEEE80211_S_AUTH: 695 rum_set_chan(sc, ic->ic_curchan); 696 break; 697 698 case IEEE80211_S_ASSOC: 699 rum_set_chan(sc, ic->ic_curchan); 700 break; 701 702 case IEEE80211_S_RUN: 703 rum_set_chan(sc, ic->ic_curchan); 704 705 ni = ic->ic_bss; 706 707 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 708 rum_update_slot(sc); 709 rum_enable_mrr(sc); 710 rum_set_txpreamble(sc); 711 rum_set_basicrates(sc); 712 rum_set_bssid(sc, ni->ni_bssid); 713 } 714 715 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 716 ic->ic_opmode == IEEE80211_M_IBSS) 717 rum_prepare_beacon(sc); 718 719 if (ic->ic_opmode != IEEE80211_M_MONITOR) 720 rum_enable_tsf_sync(sc); 721 722 /* enable automatic rate adaptation in STA mode */ 723 if (ic->ic_opmode == IEEE80211_M_STA && 724 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 725 rum_amrr_start(sc, ni); 726 727 break; 728 } 729 730 sc->sc_newstate(ic, sc->sc_state, -1); 731 } 732 733 Static int 734 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 735 { 736 struct rum_softc *sc = ic->ic_ifp->if_softc; 737 738 usb_rem_task(sc->sc_udev, &sc->sc_task); 739 callout_stop(&sc->scan_ch); 740 callout_stop(&sc->amrr_ch); 741 742 /* do it in a process context */ 743 sc->sc_state = nstate; 744 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 745 746 return 0; 747 } 748 749 /* quickly determine if a given rate is CCK or OFDM */ 750 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 751 752 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 753 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 754 755 Static void 756 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 757 { 758 struct rum_tx_data *data = priv; 759 struct rum_softc *sc = data->sc; 760 struct ifnet *ifp = &sc->sc_if; 761 int s; 762 763 if (status != USBD_NORMAL_COMPLETION) { 764 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 765 return; 766 767 printf("%s: could not transmit buffer: %s\n", 768 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 769 770 if (status == USBD_STALLED) 771 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 772 773 ifp->if_oerrors++; 774 return; 775 } 776 777 s = splnet(); 778 779 m_freem(data->m); 780 data->m = NULL; 781 ieee80211_free_node(data->ni); 782 data->ni = NULL; 783 784 sc->tx_queued--; 785 ifp->if_opackets++; 786 787 DPRINTFN(10, ("tx done\n")); 788 789 sc->sc_tx_timer = 0; 790 ifp->if_flags &= ~IFF_OACTIVE; 791 rum_start(ifp); 792 793 splx(s); 794 } 795 796 Static void 797 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 798 { 799 struct rum_rx_data *data = priv; 800 struct rum_softc *sc = data->sc; 801 struct ieee80211com *ic = &sc->sc_ic; 802 struct ifnet *ifp = &sc->sc_if; 803 struct rum_rx_desc *desc; 804 struct ieee80211_frame *wh; 805 struct ieee80211_node *ni; 806 struct mbuf *mnew, *m; 807 int s, len; 808 809 if (status != USBD_NORMAL_COMPLETION) { 810 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 811 return; 812 813 if (status == USBD_STALLED) 814 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 815 goto skip; 816 } 817 818 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 819 820 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 821 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 822 len)); 823 ifp->if_ierrors++; 824 goto skip; 825 } 826 827 desc = (struct rum_rx_desc *)data->buf; 828 829 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 830 /* 831 * This should not happen since we did not request to receive 832 * those frames when we filled RT2573_TXRX_CSR0. 833 */ 834 DPRINTFN(5, ("CRC error\n")); 835 ifp->if_ierrors++; 836 goto skip; 837 } 838 839 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 840 if (mnew == NULL) { 841 printf("%s: could not allocate rx mbuf\n", 842 USBDEVNAME(sc->sc_dev)); 843 ifp->if_ierrors++; 844 goto skip; 845 } 846 847 MCLGET(mnew, M_DONTWAIT); 848 if (!(mnew->m_flags & M_EXT)) { 849 printf("%s: could not allocate rx mbuf cluster\n", 850 USBDEVNAME(sc->sc_dev)); 851 m_freem(mnew); 852 ifp->if_ierrors++; 853 goto skip; 854 } 855 856 m = data->m; 857 data->m = mnew; 858 data->buf = mtod(data->m, uint8_t *); 859 860 /* finalize mbuf */ 861 m->m_pkthdr.rcvif = ifp; 862 m->m_data = (caddr_t)(desc + 1); 863 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 864 865 s = splnet(); 866 867 #if NBPFILTER > 0 868 if (sc->sc_drvbpf != NULL) { 869 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 870 871 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 872 tap->wr_rate = rum_rxrate(desc); 873 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 874 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 875 tap->wr_antenna = sc->rx_ant; 876 tap->wr_antsignal = desc->rssi; 877 878 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 879 } 880 #endif 881 882 wh = mtod(m, struct ieee80211_frame *); 883 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 884 885 /* send the frame to the 802.11 layer */ 886 ieee80211_input(ic, m, ni, desc->rssi, 0); 887 888 /* node is no longer needed */ 889 ieee80211_free_node(ni); 890 891 splx(s); 892 893 DPRINTFN(15, ("rx done\n")); 894 895 skip: /* setup a new transfer */ 896 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 897 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 898 usbd_transfer(xfer); 899 } 900 901 /* 902 * This function is only used by the Rx radiotap code. It returns the rate at 903 * which a given frame was received. 904 */ 905 #if NBPFILTER > 0 906 Static uint8_t 907 rum_rxrate(struct rum_rx_desc *desc) 908 { 909 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 910 /* reverse function of rum_plcp_signal */ 911 switch (desc->rate) { 912 case 0xb: return 12; 913 case 0xf: return 18; 914 case 0xa: return 24; 915 case 0xe: return 36; 916 case 0x9: return 48; 917 case 0xd: return 72; 918 case 0x8: return 96; 919 case 0xc: return 108; 920 } 921 } else { 922 if (desc->rate == 10) 923 return 2; 924 if (desc->rate == 20) 925 return 4; 926 if (desc->rate == 55) 927 return 11; 928 if (desc->rate == 110) 929 return 22; 930 } 931 return 2; /* should not get there */ 932 } 933 #endif 934 935 /* 936 * Return the expected ack rate for a frame transmitted at rate `rate'. 937 * XXX: this should depend on the destination node basic rate set. 938 */ 939 Static int 940 rum_ack_rate(struct ieee80211com *ic, int rate) 941 { 942 switch (rate) { 943 /* CCK rates */ 944 case 2: 945 return 2; 946 case 4: 947 case 11: 948 case 22: 949 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 950 951 /* OFDM rates */ 952 case 12: 953 case 18: 954 return 12; 955 case 24: 956 case 36: 957 return 24; 958 case 48: 959 case 72: 960 case 96: 961 case 108: 962 return 48; 963 } 964 965 /* default to 1Mbps */ 966 return 2; 967 } 968 969 /* 970 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 971 * The function automatically determines the operating mode depending on the 972 * given rate. `flags' indicates whether short preamble is in use or not. 973 */ 974 Static uint16_t 975 rum_txtime(int len, int rate, uint32_t flags) 976 { 977 uint16_t txtime; 978 979 if (RUM_RATE_IS_OFDM(rate)) { 980 /* IEEE Std 802.11a-1999, pp. 37 */ 981 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 982 txtime = 16 + 4 + 4 * txtime + 6; 983 } else { 984 /* IEEE Std 802.11b-1999, pp. 28 */ 985 txtime = (16 * len + rate - 1) / rate; 986 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 987 txtime += 72 + 24; 988 else 989 txtime += 144 + 48; 990 } 991 return txtime; 992 } 993 994 Static uint8_t 995 rum_plcp_signal(int rate) 996 { 997 switch (rate) { 998 /* CCK rates (returned values are device-dependent) */ 999 case 2: return 0x0; 1000 case 4: return 0x1; 1001 case 11: return 0x2; 1002 case 22: return 0x3; 1003 1004 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1005 case 12: return 0xb; 1006 case 18: return 0xf; 1007 case 24: return 0xa; 1008 case 36: return 0xe; 1009 case 48: return 0x9; 1010 case 72: return 0xd; 1011 case 96: return 0x8; 1012 case 108: return 0xc; 1013 1014 /* unsupported rates (should not get there) */ 1015 default: return 0xff; 1016 } 1017 } 1018 1019 Static void 1020 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1021 uint32_t flags, uint16_t xflags, int len, int rate) 1022 { 1023 struct ieee80211com *ic = &sc->sc_ic; 1024 uint16_t plcp_length; 1025 int remainder; 1026 1027 desc->flags = htole32(flags); 1028 desc->flags |= htole32(RT2573_TX_VALID); 1029 desc->flags |= htole32(len << 16); 1030 1031 desc->xflags = htole16(xflags); 1032 1033 desc->wme = htole16( 1034 RT2573_QID(0) | 1035 RT2573_AIFSN(2) | 1036 RT2573_LOGCWMIN(4) | 1037 RT2573_LOGCWMAX(10)); 1038 1039 /* setup PLCP fields */ 1040 desc->plcp_signal = rum_plcp_signal(rate); 1041 desc->plcp_service = 4; 1042 1043 len += IEEE80211_CRC_LEN; 1044 if (RUM_RATE_IS_OFDM(rate)) { 1045 desc->flags |= htole32(RT2573_TX_OFDM); 1046 1047 plcp_length = len & 0xfff; 1048 desc->plcp_length_hi = plcp_length >> 6; 1049 desc->plcp_length_lo = plcp_length & 0x3f; 1050 } else { 1051 plcp_length = (16 * len + rate - 1) / rate; 1052 if (rate == 22) { 1053 remainder = (16 * len) % 22; 1054 if (remainder != 0 && remainder < 7) 1055 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1056 } 1057 desc->plcp_length_hi = plcp_length >> 8; 1058 desc->plcp_length_lo = plcp_length & 0xff; 1059 1060 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1061 desc->plcp_signal |= 0x08; 1062 } 1063 } 1064 1065 #define RUM_TX_TIMEOUT 5000 1066 1067 Static int 1068 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1069 { 1070 struct ieee80211com *ic = &sc->sc_ic; 1071 struct rum_tx_desc *desc; 1072 struct rum_tx_data *data; 1073 struct ieee80211_frame *wh; 1074 uint32_t flags = 0; 1075 uint16_t dur; 1076 usbd_status error; 1077 int xferlen, rate; 1078 1079 data = &sc->tx_data[0]; 1080 desc = (struct rum_tx_desc *)data->buf; 1081 1082 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1083 1084 data->m = m0; 1085 data->ni = ni; 1086 1087 wh = mtod(m0, struct ieee80211_frame *); 1088 1089 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1090 flags |= RT2573_TX_ACK; 1091 1092 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1093 ic->ic_flags) + sc->sifs; 1094 *(uint16_t *)wh->i_dur = htole16(dur); 1095 1096 /* tell hardware to set timestamp in probe responses */ 1097 if ((wh->i_fc[0] & 1098 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1099 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1100 flags |= RT2573_TX_TIMESTAMP; 1101 } 1102 1103 #if NBPFILTER > 0 1104 if (sc->sc_drvbpf != NULL) { 1105 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1106 1107 tap->wt_flags = 0; 1108 tap->wt_rate = rate; 1109 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1110 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1111 tap->wt_antenna = sc->tx_ant; 1112 1113 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1114 } 1115 #endif 1116 1117 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1118 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1119 1120 /* align end on a 4-bytes boundary */ 1121 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1122 1123 /* 1124 * No space left in the last URB to store the extra 4 bytes, force 1125 * sending of another URB. 1126 */ 1127 if ((xferlen % 64) == 0) 1128 xferlen += 4; 1129 1130 DPRINTFN(10, ("sending msg frame len=%zu rate=%u xfer len=%u\n", 1131 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, rate, xferlen)); 1132 1133 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1134 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1135 1136 error = usbd_transfer(data->xfer); 1137 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1138 m_freem(m0); 1139 return error; 1140 } 1141 1142 sc->tx_queued++; 1143 1144 return 0; 1145 } 1146 1147 Static int 1148 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1149 { 1150 struct ieee80211com *ic = &sc->sc_ic; 1151 struct rum_tx_desc *desc; 1152 struct rum_tx_data *data; 1153 struct ieee80211_frame *wh; 1154 struct ieee80211_key *k; 1155 uint32_t flags = 0; 1156 uint16_t dur; 1157 usbd_status error; 1158 int xferlen, rate; 1159 1160 wh = mtod(m0, struct ieee80211_frame *); 1161 1162 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1163 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1164 else 1165 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1166 rate &= IEEE80211_RATE_VAL; 1167 1168 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1169 k = ieee80211_crypto_encap(ic, ni, m0); 1170 if (k == NULL) { 1171 m_freem(m0); 1172 return ENOBUFS; 1173 } 1174 1175 /* packet header may have moved, reset our local pointer */ 1176 wh = mtod(m0, struct ieee80211_frame *); 1177 } 1178 1179 data = &sc->tx_data[0]; 1180 desc = (struct rum_tx_desc *)data->buf; 1181 1182 data->m = m0; 1183 data->ni = ni; 1184 1185 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1186 flags |= RT2573_TX_ACK; 1187 1188 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1189 ic->ic_flags) + sc->sifs; 1190 *(uint16_t *)wh->i_dur = htole16(dur); 1191 } 1192 1193 #if NBPFILTER > 0 1194 if (sc->sc_drvbpf != NULL) { 1195 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1196 1197 tap->wt_flags = 0; 1198 tap->wt_rate = rate; 1199 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1200 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1201 tap->wt_antenna = sc->tx_ant; 1202 1203 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1204 } 1205 #endif 1206 1207 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1208 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1209 1210 /* align end on a 4-bytes boundary */ 1211 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1212 1213 /* 1214 * No space left in the last URB to store the extra 4 bytes, force 1215 * sending of another URB. 1216 */ 1217 if ((xferlen % 64) == 0) 1218 xferlen += 4; 1219 1220 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1221 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, rate, xferlen)); 1222 1223 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1224 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1225 1226 error = usbd_transfer(data->xfer); 1227 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1228 m_freem(m0); 1229 return error; 1230 } 1231 1232 sc->tx_queued++; 1233 1234 return 0; 1235 } 1236 1237 Static void 1238 rum_start(struct ifnet *ifp) 1239 { 1240 struct rum_softc *sc = ifp->if_softc; 1241 struct ieee80211com *ic = &sc->sc_ic; 1242 struct ether_header *eh; 1243 struct ieee80211_node *ni; 1244 struct mbuf *m0; 1245 1246 for (;;) { 1247 IF_POLL(&ic->ic_mgtq, m0); 1248 if (m0 != NULL) { 1249 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1250 ifp->if_flags |= IFF_OACTIVE; 1251 break; 1252 } 1253 IF_DEQUEUE(&ic->ic_mgtq, m0); 1254 1255 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1256 m0->m_pkthdr.rcvif = NULL; 1257 #if NBPFILTER > 0 1258 if (ic->ic_rawbpf != NULL) 1259 bpf_mtap(ic->ic_rawbpf, m0); 1260 #endif 1261 if (rum_tx_mgt(sc, m0, ni) != 0) 1262 break; 1263 1264 } else { 1265 if (ic->ic_state != IEEE80211_S_RUN) 1266 break; 1267 IFQ_POLL(&ifp->if_snd, m0); 1268 if (m0 == NULL) 1269 break; 1270 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1271 ifp->if_flags |= IFF_OACTIVE; 1272 break; 1273 } 1274 IFQ_DEQUEUE(&ifp->if_snd, m0); 1275 if (m0->m_len < sizeof(struct ether_header) && 1276 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1277 continue; 1278 1279 eh = mtod(m0, struct ether_header *); 1280 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1281 if (ni == NULL) { 1282 m_freem(m0); 1283 continue; 1284 } 1285 #if NBPFILTER > 0 1286 if (ifp->if_bpf != NULL) 1287 bpf_mtap(ifp->if_bpf, m0); 1288 #endif 1289 m0 = ieee80211_encap(ic, m0, ni); 1290 if (m0 == NULL) { 1291 ieee80211_free_node(ni); 1292 continue; 1293 } 1294 #if NBPFILTER > 0 1295 if (ic->ic_rawbpf != NULL) 1296 bpf_mtap(ic->ic_rawbpf, m0); 1297 #endif 1298 if (rum_tx_data(sc, m0, ni) != 0) { 1299 ieee80211_free_node(ni); 1300 ifp->if_oerrors++; 1301 break; 1302 } 1303 } 1304 1305 sc->sc_tx_timer = 5; 1306 ifp->if_timer = 1; 1307 } 1308 } 1309 1310 Static void 1311 rum_watchdog(struct ifnet *ifp) 1312 { 1313 struct rum_softc *sc = ifp->if_softc; 1314 struct ieee80211com *ic = &sc->sc_ic; 1315 1316 ifp->if_timer = 0; 1317 1318 if (sc->sc_tx_timer > 0) { 1319 if (--sc->sc_tx_timer == 0) { 1320 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1321 /*rum_init(ifp); XXX needs a process context! */ 1322 ifp->if_oerrors++; 1323 return; 1324 } 1325 ifp->if_timer = 1; 1326 } 1327 1328 ieee80211_watchdog(ic); 1329 } 1330 1331 Static int 1332 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1333 { 1334 struct rum_softc *sc = ifp->if_softc; 1335 struct ieee80211com *ic = &sc->sc_ic; 1336 int s, error = 0; 1337 1338 s = splnet(); 1339 1340 switch (cmd) { 1341 case SIOCSIFFLAGS: 1342 if (ifp->if_flags & IFF_UP) { 1343 if (ifp->if_flags & IFF_RUNNING) 1344 rum_update_promisc(sc); 1345 else 1346 rum_init(ifp); 1347 } else { 1348 if (ifp->if_flags & IFF_RUNNING) 1349 rum_stop(ifp, 1); 1350 } 1351 break; 1352 1353 default: 1354 error = ieee80211_ioctl(ic, cmd, data); 1355 } 1356 1357 if (error == ENETRESET) { 1358 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1359 (IFF_UP | IFF_RUNNING)) 1360 rum_init(ifp); 1361 error = 0; 1362 } 1363 1364 splx(s); 1365 1366 return error; 1367 } 1368 1369 Static void 1370 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1371 { 1372 usb_device_request_t req; 1373 usbd_status error; 1374 1375 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1376 req.bRequest = RT2573_READ_EEPROM; 1377 USETW(req.wValue, 0); 1378 USETW(req.wIndex, addr); 1379 USETW(req.wLength, len); 1380 1381 error = usbd_do_request(sc->sc_udev, &req, buf); 1382 if (error != 0) { 1383 printf("%s: could not read EEPROM: %s\n", 1384 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1385 } 1386 } 1387 1388 Static uint32_t 1389 rum_read(struct rum_softc *sc, uint16_t reg) 1390 { 1391 uint32_t val; 1392 1393 rum_read_multi(sc, reg, &val, sizeof val); 1394 1395 return le32toh(val); 1396 } 1397 1398 Static void 1399 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1400 { 1401 usb_device_request_t req; 1402 usbd_status error; 1403 1404 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1405 req.bRequest = RT2573_READ_MULTI_MAC; 1406 USETW(req.wValue, 0); 1407 USETW(req.wIndex, reg); 1408 USETW(req.wLength, len); 1409 1410 error = usbd_do_request(sc->sc_udev, &req, buf); 1411 if (error != 0) { 1412 printf("%s: could not multi read MAC register: %s\n", 1413 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1414 } 1415 } 1416 1417 Static void 1418 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1419 { 1420 uint32_t tmp = htole32(val); 1421 1422 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1423 } 1424 1425 Static void 1426 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1427 { 1428 usb_device_request_t req; 1429 usbd_status error; 1430 1431 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1432 req.bRequest = RT2573_WRITE_MULTI_MAC; 1433 USETW(req.wValue, 0); 1434 USETW(req.wIndex, reg); 1435 USETW(req.wLength, len); 1436 1437 error = usbd_do_request(sc->sc_udev, &req, buf); 1438 if (error != 0) { 1439 printf("%s: could not multi write MAC register: %s\n", 1440 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1441 } 1442 } 1443 1444 Static void 1445 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1446 { 1447 uint32_t tmp; 1448 int ntries; 1449 1450 for (ntries = 0; ntries < 5; ntries++) { 1451 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1452 break; 1453 } 1454 if (ntries == 5) { 1455 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1456 return; 1457 } 1458 1459 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1460 rum_write(sc, RT2573_PHY_CSR3, tmp); 1461 } 1462 1463 Static uint8_t 1464 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1465 { 1466 uint32_t val; 1467 int ntries; 1468 1469 for (ntries = 0; ntries < 5; ntries++) { 1470 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1471 break; 1472 } 1473 if (ntries == 5) { 1474 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1475 return 0; 1476 } 1477 1478 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1479 rum_write(sc, RT2573_PHY_CSR3, val); 1480 1481 for (ntries = 0; ntries < 100; ntries++) { 1482 val = rum_read(sc, RT2573_PHY_CSR3); 1483 if (!(val & RT2573_BBP_BUSY)) 1484 return val & 0xff; 1485 DELAY(1); 1486 } 1487 1488 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1489 return 0; 1490 } 1491 1492 Static void 1493 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1494 { 1495 uint32_t tmp; 1496 int ntries; 1497 1498 for (ntries = 0; ntries < 5; ntries++) { 1499 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1500 break; 1501 } 1502 if (ntries == 5) { 1503 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1504 return; 1505 } 1506 1507 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1508 (reg & 3); 1509 rum_write(sc, RT2573_PHY_CSR4, tmp); 1510 1511 /* remember last written value in sc */ 1512 sc->rf_regs[reg] = val; 1513 1514 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1515 } 1516 1517 Static void 1518 rum_select_antenna(struct rum_softc *sc) 1519 { 1520 uint8_t bbp4, bbp77; 1521 uint32_t tmp; 1522 1523 bbp4 = rum_bbp_read(sc, 4); 1524 bbp77 = rum_bbp_read(sc, 77); 1525 1526 /* TBD */ 1527 1528 /* make sure Rx is disabled before switching antenna */ 1529 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1530 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1531 1532 rum_bbp_write(sc, 4, bbp4); 1533 rum_bbp_write(sc, 77, bbp77); 1534 1535 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1536 } 1537 1538 /* 1539 * Enable multi-rate retries for frames sent at OFDM rates. 1540 * In 802.11b/g mode, allow fallback to CCK rates. 1541 */ 1542 Static void 1543 rum_enable_mrr(struct rum_softc *sc) 1544 { 1545 struct ieee80211com *ic = &sc->sc_ic; 1546 uint32_t tmp; 1547 1548 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1549 1550 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1551 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1552 tmp |= RT2573_MRR_CCK_FALLBACK; 1553 tmp |= RT2573_MRR_ENABLED; 1554 1555 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1556 } 1557 1558 Static void 1559 rum_set_txpreamble(struct rum_softc *sc) 1560 { 1561 uint32_t tmp; 1562 1563 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1564 1565 tmp &= ~RT2573_SHORT_PREAMBLE; 1566 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1567 tmp |= RT2573_SHORT_PREAMBLE; 1568 1569 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1570 } 1571 1572 Static void 1573 rum_set_basicrates(struct rum_softc *sc) 1574 { 1575 struct ieee80211com *ic = &sc->sc_ic; 1576 1577 /* update basic rate set */ 1578 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1579 /* 11b basic rates: 1, 2Mbps */ 1580 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1581 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1582 /* 11a basic rates: 6, 12, 24Mbps */ 1583 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1584 } else { 1585 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1586 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1587 } 1588 } 1589 1590 /* 1591 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1592 * driver. 1593 */ 1594 Static void 1595 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1596 { 1597 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1598 uint32_t tmp; 1599 1600 /* update all BBP registers that depend on the band */ 1601 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1602 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1603 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1604 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1605 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1606 } 1607 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1608 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1609 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1610 } 1611 1612 sc->bbp17 = bbp17; 1613 rum_bbp_write(sc, 17, bbp17); 1614 rum_bbp_write(sc, 96, bbp96); 1615 rum_bbp_write(sc, 104, bbp104); 1616 1617 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1618 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1619 rum_bbp_write(sc, 75, 0x80); 1620 rum_bbp_write(sc, 86, 0x80); 1621 rum_bbp_write(sc, 88, 0x80); 1622 } 1623 1624 rum_bbp_write(sc, 35, bbp35); 1625 rum_bbp_write(sc, 97, bbp97); 1626 rum_bbp_write(sc, 98, bbp98); 1627 1628 tmp = rum_read(sc, RT2573_PHY_CSR0); 1629 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1630 if (IEEE80211_IS_CHAN_2GHZ(c)) 1631 tmp |= RT2573_PA_PE_2GHZ; 1632 else 1633 tmp |= RT2573_PA_PE_5GHZ; 1634 rum_write(sc, RT2573_PHY_CSR0, tmp); 1635 1636 /* 802.11a uses a 16 microseconds short interframe space */ 1637 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1638 } 1639 1640 Static void 1641 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1642 { 1643 struct ieee80211com *ic = &sc->sc_ic; 1644 const struct rfprog *rfprog; 1645 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1646 int8_t power; 1647 u_int i, chan; 1648 1649 chan = ieee80211_chan2ieee(ic, c); 1650 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1651 return; 1652 1653 /* select the appropriate RF settings based on what EEPROM says */ 1654 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1655 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1656 1657 /* find the settings for this channel (we know it exists) */ 1658 for (i = 0; rfprog[i].chan != chan; i++); 1659 1660 power = sc->txpow[i]; 1661 if (power < 0) { 1662 bbp94 += power; 1663 power = 0; 1664 } else if (power > 31) { 1665 bbp94 += power - 31; 1666 power = 31; 1667 } 1668 1669 /* 1670 * If we are switching from the 2GHz band to the 5GHz band or 1671 * vice-versa, BBP registers need to be reprogrammed. 1672 */ 1673 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1674 rum_select_band(sc, c); 1675 rum_select_antenna(sc); 1676 } 1677 ic->ic_curchan = c; 1678 1679 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1680 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1681 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1682 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1683 1684 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1685 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1686 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1687 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1688 1689 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1690 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1691 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1692 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1693 1694 DELAY(10); 1695 1696 /* enable smart mode for MIMO-capable RFs */ 1697 bbp3 = rum_bbp_read(sc, 3); 1698 1699 bbp3 &= ~RT2573_SMART_MODE; 1700 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1701 bbp3 |= RT2573_SMART_MODE; 1702 1703 rum_bbp_write(sc, 3, bbp3); 1704 1705 if (bbp94 != RT2573_BBPR94_DEFAULT) 1706 rum_bbp_write(sc, 94, bbp94); 1707 } 1708 1709 /* 1710 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1711 * and HostAP operating modes. 1712 */ 1713 Static void 1714 rum_enable_tsf_sync(struct rum_softc *sc) 1715 { 1716 struct ieee80211com *ic = &sc->sc_ic; 1717 uint32_t tmp; 1718 1719 if (ic->ic_opmode != IEEE80211_M_STA) { 1720 /* 1721 * Change default 16ms TBTT adjustment to 8ms. 1722 * Must be done before enabling beacon generation. 1723 */ 1724 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1725 } 1726 1727 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1728 1729 /* set beacon interval (in 1/16ms unit) */ 1730 tmp |= ic->ic_bss->ni_intval * 16; 1731 1732 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1733 if (ic->ic_opmode == IEEE80211_M_STA) 1734 tmp |= RT2573_TSF_MODE(1); 1735 else 1736 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1737 1738 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1739 } 1740 1741 Static void 1742 rum_update_slot(struct rum_softc *sc) 1743 { 1744 struct ieee80211com *ic = &sc->sc_ic; 1745 uint8_t slottime; 1746 uint32_t tmp; 1747 1748 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1749 1750 tmp = rum_read(sc, RT2573_MAC_CSR9); 1751 tmp = (tmp & ~0xff) | slottime; 1752 rum_write(sc, RT2573_MAC_CSR9, tmp); 1753 1754 DPRINTF(("setting slot time to %uus\n", slottime)); 1755 } 1756 1757 Static void 1758 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1759 { 1760 uint32_t tmp; 1761 1762 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1763 rum_write(sc, RT2573_MAC_CSR4, tmp); 1764 1765 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1766 rum_write(sc, RT2573_MAC_CSR5, tmp); 1767 } 1768 1769 Static void 1770 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1771 { 1772 uint32_t tmp; 1773 1774 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1775 rum_write(sc, RT2573_MAC_CSR2, tmp); 1776 1777 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1778 rum_write(sc, RT2573_MAC_CSR3, tmp); 1779 } 1780 1781 Static void 1782 rum_update_promisc(struct rum_softc *sc) 1783 { 1784 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1785 uint32_t tmp; 1786 1787 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1788 1789 tmp &= ~RT2573_DROP_NOT_TO_ME; 1790 if (!(ifp->if_flags & IFF_PROMISC)) 1791 tmp |= RT2573_DROP_NOT_TO_ME; 1792 1793 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1794 1795 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1796 "entering" : "leaving")); 1797 } 1798 1799 Static const char * 1800 rum_get_rf(int rev) 1801 { 1802 switch (rev) { 1803 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1804 case RT2573_RF_2528: return "RT2528"; 1805 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1806 case RT2573_RF_5226: return "RT5226"; 1807 default: return "unknown"; 1808 } 1809 } 1810 1811 Static void 1812 rum_read_eeprom(struct rum_softc *sc) 1813 { 1814 struct ieee80211com *ic = &sc->sc_ic; 1815 uint16_t val; 1816 #ifdef RUM_DEBUG 1817 int i; 1818 #endif 1819 1820 /* read MAC/BBP type */ 1821 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1822 sc->macbbp_rev = le16toh(val); 1823 1824 /* read MAC address */ 1825 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1826 1827 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1828 val = le16toh(val); 1829 sc->rf_rev = (val >> 11) & 0x1f; 1830 sc->hw_radio = (val >> 10) & 0x1; 1831 sc->rx_ant = (val >> 4) & 0x3; 1832 sc->tx_ant = (val >> 2) & 0x3; 1833 sc->nb_ant = val & 0x3; 1834 1835 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1836 1837 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1838 val = le16toh(val); 1839 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1840 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1841 1842 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1843 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1844 1845 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1846 val = le16toh(val); 1847 if ((val & 0xff) != 0xff) 1848 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1849 1850 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1851 val = le16toh(val); 1852 if ((val & 0xff) != 0xff) 1853 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1854 1855 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1856 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1857 1858 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1859 val = le16toh(val); 1860 if ((val & 0xff) != 0xff) 1861 sc->rffreq = val & 0xff; 1862 1863 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1864 1865 /* read Tx power for all a/b/g channels */ 1866 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1867 /* XXX default Tx power for 802.11a channels */ 1868 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1869 #ifdef RUM_DEBUG 1870 for (i = 0; i < 14; i++) 1871 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1872 #endif 1873 1874 /* read default values for BBP registers */ 1875 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1876 #ifdef RUM_DEBUG 1877 for (i = 0; i < 14; i++) { 1878 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1879 continue; 1880 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1881 sc->bbp_prom[i].val)); 1882 } 1883 #endif 1884 } 1885 1886 Static int 1887 rum_bbp_init(struct rum_softc *sc) 1888 { 1889 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1890 int i, ntries; 1891 uint8_t val; 1892 1893 /* wait for BBP to be ready */ 1894 for (ntries = 0; ntries < 100; ntries++) { 1895 val = rum_bbp_read(sc, 0); 1896 if (val != 0 && val != 0xff) 1897 break; 1898 DELAY(1000); 1899 } 1900 if (ntries == 100) { 1901 printf("%s: timeout waiting for BBP\n", 1902 USBDEVNAME(sc->sc_dev)); 1903 return EIO; 1904 } 1905 1906 /* initialize BBP registers to default values */ 1907 for (i = 0; i < N(rum_def_bbp); i++) 1908 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1909 1910 /* write vendor-specific BBP values (from EEPROM) */ 1911 for (i = 0; i < 16; i++) { 1912 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1913 continue; 1914 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1915 } 1916 1917 return 0; 1918 #undef N 1919 } 1920 1921 Static int 1922 rum_init(struct ifnet *ifp) 1923 { 1924 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1925 struct rum_softc *sc = ifp->if_softc; 1926 struct ieee80211com *ic = &sc->sc_ic; 1927 struct rum_rx_data *data; 1928 uint32_t tmp; 1929 usbd_status error = 0; 1930 int i, ntries; 1931 1932 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1933 if (rum_attachhook(sc)) 1934 goto fail; 1935 } 1936 1937 rum_stop(ifp, 0); 1938 1939 /* initialize MAC registers to default values */ 1940 for (i = 0; i < N(rum_def_mac); i++) 1941 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1942 1943 /* set host ready */ 1944 rum_write(sc, RT2573_MAC_CSR1, 3); 1945 rum_write(sc, RT2573_MAC_CSR1, 0); 1946 1947 /* wait for BBP/RF to wakeup */ 1948 for (ntries = 0; ntries < 1000; ntries++) { 1949 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1950 break; 1951 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1952 DELAY(1000); 1953 } 1954 if (ntries == 1000) { 1955 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1956 USBDEVNAME(sc->sc_dev)); 1957 goto fail; 1958 } 1959 1960 if ((error = rum_bbp_init(sc)) != 0) 1961 goto fail; 1962 1963 /* select default channel */ 1964 rum_select_band(sc, ic->ic_curchan); 1965 rum_select_antenna(sc); 1966 rum_set_chan(sc, ic->ic_curchan); 1967 1968 /* clear STA registers */ 1969 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1970 1971 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1972 rum_set_macaddr(sc, ic->ic_myaddr); 1973 1974 /* initialize ASIC */ 1975 rum_write(sc, RT2573_MAC_CSR1, 4); 1976 1977 /* 1978 * Allocate xfer for AMRR statistics requests. 1979 */ 1980 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 1981 if (sc->amrr_xfer == NULL) { 1982 printf("%s: could not allocate AMRR xfer\n", 1983 USBDEVNAME(sc->sc_dev)); 1984 goto fail; 1985 } 1986 1987 /* 1988 * Open Tx and Rx USB bulk pipes. 1989 */ 1990 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1991 &sc->sc_tx_pipeh); 1992 if (error != 0) { 1993 printf("%s: could not open Tx pipe: %s\n", 1994 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1995 goto fail; 1996 } 1997 1998 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 1999 &sc->sc_rx_pipeh); 2000 if (error != 0) { 2001 printf("%s: could not open Rx pipe: %s\n", 2002 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2003 goto fail; 2004 } 2005 2006 /* 2007 * Allocate Tx and Rx xfer queues. 2008 */ 2009 error = rum_alloc_tx_list(sc); 2010 if (error != 0) { 2011 printf("%s: could not allocate Tx list\n", 2012 USBDEVNAME(sc->sc_dev)); 2013 goto fail; 2014 } 2015 2016 error = rum_alloc_rx_list(sc); 2017 if (error != 0) { 2018 printf("%s: could not allocate Rx list\n", 2019 USBDEVNAME(sc->sc_dev)); 2020 goto fail; 2021 } 2022 2023 /* 2024 * Start up the receive pipe. 2025 */ 2026 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 2027 data = &sc->rx_data[i]; 2028 2029 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2030 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2031 usbd_transfer(data->xfer); 2032 } 2033 2034 /* update Rx filter */ 2035 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2036 2037 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2038 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2039 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2040 RT2573_DROP_ACKCTS; 2041 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2042 tmp |= RT2573_DROP_TODS; 2043 if (!(ifp->if_flags & IFF_PROMISC)) 2044 tmp |= RT2573_DROP_NOT_TO_ME; 2045 } 2046 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2047 2048 ifp->if_flags &= ~IFF_OACTIVE; 2049 ifp->if_flags |= IFF_RUNNING; 2050 2051 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2052 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2053 else 2054 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2055 2056 return 0; 2057 2058 fail: rum_stop(ifp, 1); 2059 return error; 2060 #undef N 2061 } 2062 2063 Static void 2064 rum_stop(struct ifnet *ifp, int disable) 2065 { 2066 struct rum_softc *sc = ifp->if_softc; 2067 struct ieee80211com *ic = &sc->sc_ic; 2068 uint32_t tmp; 2069 2070 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2071 2072 sc->sc_tx_timer = 0; 2073 ifp->if_timer = 0; 2074 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2075 2076 /* disable Rx */ 2077 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2078 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2079 2080 /* reset ASIC */ 2081 rum_write(sc, RT2573_MAC_CSR1, 3); 2082 rum_write(sc, RT2573_MAC_CSR1, 0); 2083 2084 if (sc->sc_rx_pipeh != NULL) { 2085 usbd_abort_pipe(sc->sc_rx_pipeh); 2086 usbd_close_pipe(sc->sc_rx_pipeh); 2087 sc->sc_rx_pipeh = NULL; 2088 } 2089 2090 if (sc->sc_tx_pipeh != NULL) { 2091 usbd_abort_pipe(sc->sc_tx_pipeh); 2092 usbd_close_pipe(sc->sc_tx_pipeh); 2093 sc->sc_tx_pipeh = NULL; 2094 } 2095 2096 rum_free_rx_list(sc); 2097 rum_free_tx_list(sc); 2098 } 2099 2100 Static int 2101 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2102 { 2103 usb_device_request_t req; 2104 uint16_t reg = RT2573_MCU_CODE_BASE; 2105 usbd_status error; 2106 2107 /* copy firmware image into NIC */ 2108 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2109 rum_write(sc, reg, UGETDW(ucode)); 2110 2111 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2112 req.bRequest = RT2573_MCU_CNTL; 2113 USETW(req.wValue, RT2573_MCU_RUN); 2114 USETW(req.wIndex, 0); 2115 USETW(req.wLength, 0); 2116 2117 error = usbd_do_request(sc->sc_udev, &req, NULL); 2118 if (error != 0) { 2119 printf("%s: could not run firmware: %s\n", 2120 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2121 } 2122 return error; 2123 } 2124 2125 Static int 2126 rum_prepare_beacon(struct rum_softc *sc) 2127 { 2128 struct ieee80211com *ic = &sc->sc_ic; 2129 struct rum_tx_desc desc; 2130 struct mbuf *m0; 2131 int rate; 2132 2133 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2134 if (m0 == NULL) { 2135 printf("%s: could not allocate beacon frame\n", 2136 sc->sc_dev.dv_xname); 2137 return ENOBUFS; 2138 } 2139 2140 /* send beacons at the lowest available rate */ 2141 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2142 2143 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2144 m0->m_pkthdr.len, rate); 2145 2146 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2147 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2148 2149 /* copy beacon header and payload into NIC memory */ 2150 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2151 m0->m_pkthdr.len); 2152 2153 m_freem(m0); 2154 2155 return 0; 2156 } 2157 2158 Static void 2159 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2160 { 2161 int i; 2162 2163 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2164 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2165 2166 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2167 2168 /* set rate to some reasonable initial value */ 2169 for (i = ni->ni_rates.rs_nrates - 1; 2170 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2171 i--); 2172 ni->ni_txrate = i; 2173 2174 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2175 } 2176 2177 Static void 2178 rum_amrr_timeout(void *arg) 2179 { 2180 struct rum_softc *sc = arg; 2181 usb_device_request_t req; 2182 int s; 2183 2184 s = splusb(); 2185 2186 /* 2187 * Asynchronously read statistic registers (cleared by read). 2188 */ 2189 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2190 req.bRequest = RT2573_READ_MULTI_MAC; 2191 USETW(req.wValue, 0); 2192 USETW(req.wIndex, RT2573_STA_CSR0); 2193 USETW(req.wLength, sizeof sc->sta); 2194 2195 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2196 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2197 rum_amrr_update); 2198 (void)usbd_transfer(sc->amrr_xfer); 2199 2200 splx(s); 2201 } 2202 2203 Static void 2204 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2205 usbd_status status) 2206 { 2207 struct rum_softc *sc = (struct rum_softc *)priv; 2208 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2209 2210 if (status != USBD_NORMAL_COMPLETION) { 2211 printf("%s: could not retrieve Tx statistics - cancelling " 2212 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2213 return; 2214 } 2215 2216 /* count TX retry-fail as Tx errors */ 2217 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2218 2219 sc->amn.amn_retrycnt = 2220 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2221 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2222 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2223 2224 sc->amn.amn_txcnt = 2225 sc->amn.amn_retrycnt + 2226 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2227 2228 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2229 2230 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2231 } 2232 2233 int 2234 rum_activate(device_ptr_t self, enum devact act) 2235 { 2236 switch (act) { 2237 case DVACT_ACTIVATE: 2238 return EOPNOTSUPP; 2239 2240 case DVACT_DEACTIVATE: 2241 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2242 break; 2243 } 2244 2245 return 0; 2246 } 2247
Indexes created Wed Oct 01 19:09:53 GMT 2025