if_rum.c revision 1.2
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.2 2006/11/01 08:39:25 xtraeme 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 1.2 2006/11/01 08:39:25 xtraeme 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_BELKIN, USB_PRODUCT_BELKIN_F5D7050A }, 93 { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5D9050V3 }, 94 { USB_VENDOR_CISCOLINKSYS, USB_PRODUCT_CISCOLINKSYS_WUSB54GC }, 95 { USB_VENDOR_CONCEPTRONIC, USB_PRODUCT_CONCEPTRONIC_C54RU2 }, 96 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_CWD854F }, 97 { USB_VENDOR_DICKSMITH, USB_PRODUCT_DICKSMITH_RT2573 }, 98 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_DWLG122C1 }, 99 { USB_VENDOR_DLINK2, USB_PRODUCT_DLINK2_WUA1340 }, 100 { USB_VENDOR_GIGABYTE, USB_PRODUCT_GIGABYTE_GNWB01GS }, 101 { USB_VENDOR_GIGASET, USB_PRODUCT_GIGASET_RT2573 }, 102 { USB_VENDOR_GOODWAY, USB_PRODUCT_GOODWAY_RT2573 }, 103 { USB_VENDOR_HUAWEI3COM, USB_PRODUCT_HUAWEI3COM_RT2573 }, 104 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 105 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 106 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 107 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 108 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 109 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 110 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 111 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 112 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 113 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 114 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 115 }; 116 117 Static int rum_attachhook(void *); 118 Static int rum_alloc_tx_list(struct rum_softc *); 119 Static void rum_free_tx_list(struct rum_softc *); 120 Static int rum_alloc_rx_list(struct rum_softc *); 121 Static void rum_free_rx_list(struct rum_softc *); 122 Static int rum_media_change(struct ifnet *); 123 Static void rum_next_scan(void *); 124 Static void rum_task(void *); 125 Static int rum_newstate(struct ieee80211com *, 126 enum ieee80211_state, int); 127 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 128 usbd_status); 129 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 130 usbd_status); 131 #if NBPFILTER > 0 132 Static uint8_t rum_rxrate(struct rum_rx_desc *); 133 #endif 134 Static int rum_ack_rate(struct ieee80211com *, int); 135 Static uint16_t rum_txtime(int, int, uint32_t); 136 Static uint8_t rum_plcp_signal(int); 137 Static void rum_setup_tx_desc(struct rum_softc *, 138 struct rum_tx_desc *, uint32_t, uint16_t, int, 139 int); 140 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 141 struct ieee80211_node *); 142 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 143 struct ieee80211_node *); 144 Static void rum_start(struct ifnet *); 145 Static void rum_watchdog(struct ifnet *); 146 Static int rum_ioctl(struct ifnet *, u_long, caddr_t); 147 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 148 int); 149 Static uint32_t rum_read(struct rum_softc *, uint16_t); 150 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 151 int); 152 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 153 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 154 size_t); 155 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 156 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 157 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 158 Static void rum_select_antenna(struct rum_softc *); 159 Static void rum_enable_mrr(struct rum_softc *); 160 Static void rum_set_txpreamble(struct rum_softc *); 161 Static void rum_set_basicrates(struct rum_softc *); 162 Static void rum_select_band(struct rum_softc *, 163 struct ieee80211_channel *); 164 Static void rum_set_chan(struct rum_softc *, 165 struct ieee80211_channel *); 166 Static void rum_enable_tsf_sync(struct rum_softc *); 167 Static void rum_update_slot(struct rum_softc *); 168 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 169 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 170 Static void rum_update_promisc(struct rum_softc *); 171 Static const char *rum_get_rf(int); 172 Static void rum_read_eeprom(struct rum_softc *); 173 Static int rum_bbp_init(struct rum_softc *); 174 Static int rum_init(struct ifnet *); 175 Static void rum_stop(struct ifnet *, int); 176 Static int rum_load_microcode(struct rum_softc *, const u_char *, 177 size_t); 178 Static int rum_prepare_beacon(struct rum_softc *); 179 Static void rum_amrr_start(struct rum_softc *, 180 struct ieee80211_node *); 181 Static void rum_amrr_timeout(void *); 182 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 183 usbd_status status); 184 185 /* 186 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 187 */ 188 static const struct ieee80211_rateset rum_rateset_11a = 189 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 190 191 static const struct ieee80211_rateset rum_rateset_11b = 192 { 4, { 2, 4, 11, 22 } }; 193 194 static const struct ieee80211_rateset rum_rateset_11g = 195 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 196 197 static const struct { 198 uint32_t reg; 199 uint32_t val; 200 } rum_def_mac[] = { 201 RT2573_DEF_MAC 202 }; 203 204 static const struct { 205 uint8_t reg; 206 uint8_t val; 207 } rum_def_bbp[] = { 208 RT2573_DEF_BBP 209 }; 210 211 static const struct rfprog { 212 uint8_t chan; 213 uint32_t r1, r2, r3, r4; 214 } rum_rf5226[] = { 215 RT2573_RF5226 216 }, rum_rf5225[] = { 217 RT2573_RF5225 218 }; 219 220 USB_DECLARE_DRIVER(rum); 221 222 USB_MATCH(rum) 223 { 224 USB_MATCH_START(rum, uaa); 225 226 if (uaa->iface != NULL) 227 return UMATCH_NONE; 228 229 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 230 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 231 } 232 233 Static int 234 rum_attachhook(void *xsc) 235 { 236 struct rum_softc *sc = xsc; 237 firmware_handle_t fwh; 238 const char *name = "rum-rt2573"; 239 u_char *ucode; 240 size_t size; 241 int error; 242 243 if ((error = firmware_open("rum", name, &fwh)) != 0) { 244 printf("%s: failed loadfirmware of file %s (error %d)\n", 245 USBDEVNAME(sc->sc_dev), name, error); 246 return error; 247 } 248 size = firmware_get_size(fwh); 249 ucode = firmware_malloc(size); 250 if (ucode == NULL) { 251 printf("%s: failed to allocate firmware memory\n", 252 USBDEVNAME(sc->sc_dev)); 253 firmware_close(fwh); 254 return ENOMEM;; 255 } 256 error = firmware_read(fwh, 0, ucode, size); 257 firmware_close(fwh); 258 if (error != 0) { 259 printf("%s: failed to read firmware (error %d)\n", 260 USBDEVNAME(sc->sc_dev), error); 261 firmware_free(ucode, 0); 262 return error; 263 } 264 265 if (rum_load_microcode(sc, ucode, size) != 0) { 266 printf("%s: could not load 8051 microcode\n", 267 USBDEVNAME(sc->sc_dev)); 268 firmware_free(ucode, 0); 269 return ENXIO; 270 } 271 272 firmware_free(ucode, 0); 273 sc->sc_flags |= RT2573_FWLOADED; 274 275 return 0; 276 } 277 278 USB_ATTACH(rum) 279 { 280 USB_ATTACH_START(rum, sc, uaa); 281 struct ieee80211com *ic = &sc->sc_ic; 282 struct ifnet *ifp = &sc->sc_if; 283 usb_interface_descriptor_t *id; 284 usb_endpoint_descriptor_t *ed; 285 usbd_status error; 286 char *devinfop; 287 int i, ntries; 288 uint32_t tmp; 289 290 sc->sc_udev = uaa->device; 291 sc->sc_flags = 0; 292 293 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 294 USB_ATTACH_SETUP; 295 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 296 usbd_devinfo_free(devinfop); 297 298 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 299 printf("%s: could not set configuration no\n", 300 USBDEVNAME(sc->sc_dev)); 301 USB_ATTACH_ERROR_RETURN; 302 } 303 304 /* get the first interface handle */ 305 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 306 &sc->sc_iface); 307 if (error != 0) { 308 printf("%s: could not get interface handle\n", 309 USBDEVNAME(sc->sc_dev)); 310 USB_ATTACH_ERROR_RETURN; 311 } 312 313 /* 314 * Find endpoints. 315 */ 316 id = usbd_get_interface_descriptor(sc->sc_iface); 317 318 sc->sc_rx_no = sc->sc_tx_no = -1; 319 for (i = 0; i < id->bNumEndpoints; i++) { 320 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 321 if (ed == NULL) { 322 printf("%s: no endpoint descriptor for iface %d\n", 323 USBDEVNAME(sc->sc_dev), i); 324 USB_ATTACH_ERROR_RETURN; 325 } 326 327 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 328 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 329 sc->sc_rx_no = ed->bEndpointAddress; 330 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 331 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 332 sc->sc_tx_no = ed->bEndpointAddress; 333 } 334 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 335 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 336 USB_ATTACH_ERROR_RETURN; 337 } 338 339 usb_init_task(&sc->sc_task, rum_task, sc); 340 callout_init(&sc->scan_ch); 341 342 sc->amrr.amrr_min_success_threshold = 1; 343 sc->amrr.amrr_max_success_threshold = 10; 344 callout_init(&sc->amrr_ch); 345 346 /* retrieve RT2573 rev. no */ 347 for (ntries = 0; ntries < 1000; ntries++) { 348 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 349 break; 350 DELAY(1000); 351 } 352 if (ntries == 1000) { 353 printf("%s: timeout waiting for chip to settle\n", 354 USBDEVNAME(sc->sc_dev)); 355 USB_ATTACH_ERROR_RETURN; 356 } 357 358 /* retrieve MAC address and various other things from EEPROM */ 359 rum_read_eeprom(sc); 360 361 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 362 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 363 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 364 365 ic->ic_ifp = ifp; 366 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 367 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 368 ic->ic_state = IEEE80211_S_INIT; 369 370 /* set device capabilities */ 371 ic->ic_caps = 372 IEEE80211_C_IBSS | /* IBSS mode supported */ 373 IEEE80211_C_MONITOR | /* monitor mode supported */ 374 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 375 IEEE80211_C_TXPMGT | /* tx power management */ 376 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 377 IEEE80211_C_SHSLOT | /* short slot time supported */ 378 IEEE80211_C_WPA; /* 802.11i */ 379 380 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 381 /* set supported .11a rates */ 382 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 383 384 /* set supported .11a channels */ 385 for (i = 34; i <= 46; i += 4) { 386 ic->ic_channels[i].ic_freq = 387 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 388 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 389 } 390 for (i = 36; i <= 64; i += 4) { 391 ic->ic_channels[i].ic_freq = 392 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 393 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 394 } 395 for (i = 100; i <= 140; i += 4) { 396 ic->ic_channels[i].ic_freq = 397 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 398 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 399 } 400 for (i = 149; i <= 165; i += 4) { 401 ic->ic_channels[i].ic_freq = 402 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 403 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 404 } 405 } 406 407 /* set supported .11b and .11g rates */ 408 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 409 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 410 411 /* set supported .11b and .11g channels (1 through 14) */ 412 for (i = 1; i <= 14; i++) { 413 ic->ic_channels[i].ic_freq = 414 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 415 ic->ic_channels[i].ic_flags = 416 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 417 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 418 } 419 420 ifp->if_softc = sc; 421 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 422 ifp->if_init = rum_init; 423 ifp->if_ioctl = rum_ioctl; 424 ifp->if_start = rum_start; 425 ifp->if_watchdog = rum_watchdog; 426 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 427 IFQ_SET_READY(&ifp->if_snd); 428 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 429 430 if_attach(ifp); 431 ieee80211_ifattach(ic); 432 433 /* override state transition machine */ 434 sc->sc_newstate = ic->ic_newstate; 435 ic->ic_newstate = rum_newstate; 436 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 437 438 #if NBPFILTER > 0 439 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 440 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 441 442 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 443 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 444 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 445 446 sc->sc_txtap_len = sizeof sc->sc_txtapu; 447 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 448 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 449 #endif 450 451 ieee80211_announce(ic); 452 453 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 454 USBDEV(sc->sc_dev)); 455 456 USB_ATTACH_SUCCESS_RETURN; 457 } 458 459 USB_DETACH(rum) 460 { 461 USB_DETACH_START(rum, sc); 462 struct ieee80211com *ic = &sc->sc_ic; 463 struct ifnet *ifp = &sc->sc_if; 464 int s; 465 466 s = splusb(); 467 468 rum_stop(ifp, 1); 469 usb_rem_task(sc->sc_udev, &sc->sc_task); 470 callout_stop(&sc->scan_ch); 471 callout_stop(&sc->amrr_ch); 472 473 if (sc->amrr_xfer != NULL) { 474 usbd_free_xfer(sc->amrr_xfer); 475 sc->amrr_xfer = NULL; 476 } 477 478 if (sc->sc_rx_pipeh != NULL) { 479 usbd_abort_pipe(sc->sc_rx_pipeh); 480 usbd_close_pipe(sc->sc_rx_pipeh); 481 } 482 483 if (sc->sc_tx_pipeh != NULL) { 484 usbd_abort_pipe(sc->sc_tx_pipeh); 485 usbd_close_pipe(sc->sc_tx_pipeh); 486 } 487 488 rum_free_rx_list(sc); 489 rum_free_tx_list(sc); 490 491 #if NBPFILTER > 0 492 bpfdetach(ifp); 493 #endif 494 ieee80211_ifdetach(ic); /* free all nodes */ 495 if_detach(ifp); 496 497 splx(s); 498 499 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 500 USBDEV(sc->sc_dev)); 501 502 return 0; 503 } 504 505 Static int 506 rum_alloc_tx_list(struct rum_softc *sc) 507 { 508 struct rum_tx_data *data; 509 int i, error; 510 511 sc->tx_queued = 0; 512 513 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 514 data = &sc->tx_data[i]; 515 516 data->sc = sc; 517 518 data->xfer = usbd_alloc_xfer(sc->sc_udev); 519 if (data->xfer == NULL) { 520 printf("%s: could not allocate tx xfer\n", 521 USBDEVNAME(sc->sc_dev)); 522 error = ENOMEM; 523 goto fail; 524 } 525 526 data->buf = usbd_alloc_buffer(data->xfer, 527 RT2573_TX_DESC_SIZE + MCLBYTES); 528 if (data->buf == NULL) { 529 printf("%s: could not allocate tx buffer\n", 530 USBDEVNAME(sc->sc_dev)); 531 error = ENOMEM; 532 goto fail; 533 } 534 535 /* clean Tx descriptor */ 536 bzero(data->buf, RT2573_TX_DESC_SIZE); 537 } 538 539 return 0; 540 541 fail: rum_free_tx_list(sc); 542 return error; 543 } 544 545 Static void 546 rum_free_tx_list(struct rum_softc *sc) 547 { 548 struct rum_tx_data *data; 549 int i; 550 551 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 552 data = &sc->tx_data[i]; 553 554 if (data->xfer != NULL) { 555 usbd_free_xfer(data->xfer); 556 data->xfer = NULL; 557 } 558 559 if (data->ni != NULL) { 560 ieee80211_free_node(data->ni); 561 data->ni = NULL; 562 } 563 } 564 } 565 566 Static int 567 rum_alloc_rx_list(struct rum_softc *sc) 568 { 569 struct rum_rx_data *data; 570 int i, error; 571 572 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 573 data = &sc->rx_data[i]; 574 575 data->sc = sc; 576 577 data->xfer = usbd_alloc_xfer(sc->sc_udev); 578 if (data->xfer == NULL) { 579 printf("%s: could not allocate rx xfer\n", 580 USBDEVNAME(sc->sc_dev)); 581 error = ENOMEM; 582 goto fail; 583 } 584 585 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 586 printf("%s: could not allocate rx buffer\n", 587 USBDEVNAME(sc->sc_dev)); 588 error = ENOMEM; 589 goto fail; 590 } 591 592 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 593 if (data->m == NULL) { 594 printf("%s: could not allocate rx mbuf\n", 595 USBDEVNAME(sc->sc_dev)); 596 error = ENOMEM; 597 goto fail; 598 } 599 600 MCLGET(data->m, M_DONTWAIT); 601 if (!(data->m->m_flags & M_EXT)) { 602 printf("%s: could not allocate rx mbuf cluster\n", 603 USBDEVNAME(sc->sc_dev)); 604 error = ENOMEM; 605 goto fail; 606 } 607 608 data->buf = mtod(data->m, uint8_t *); 609 } 610 611 return 0; 612 613 fail: rum_free_tx_list(sc); 614 return error; 615 } 616 617 Static void 618 rum_free_rx_list(struct rum_softc *sc) 619 { 620 struct rum_rx_data *data; 621 int i; 622 623 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 624 data = &sc->rx_data[i]; 625 626 if (data->xfer != NULL) { 627 usbd_free_xfer(data->xfer); 628 data->xfer = NULL; 629 } 630 631 if (data->m != NULL) { 632 m_freem(data->m); 633 data->m = NULL; 634 } 635 } 636 } 637 638 Static int 639 rum_media_change(struct ifnet *ifp) 640 { 641 int error; 642 643 error = ieee80211_media_change(ifp); 644 if (error != ENETRESET) 645 return error; 646 647 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 648 rum_init(ifp); 649 650 return 0; 651 } 652 653 /* 654 * This function is called periodically (every 200ms) during scanning to 655 * switch from one channel to another. 656 */ 657 Static void 658 rum_next_scan(void *arg) 659 { 660 struct rum_softc *sc = arg; 661 struct ieee80211com *ic = &sc->sc_ic; 662 663 if (ic->ic_state == IEEE80211_S_SCAN) 664 ieee80211_next_scan(ic); 665 } 666 667 Static void 668 rum_task(void *arg) 669 { 670 struct rum_softc *sc = arg; 671 struct ieee80211com *ic = &sc->sc_ic; 672 enum ieee80211_state ostate; 673 struct ieee80211_node *ni; 674 uint32_t tmp; 675 676 ostate = ic->ic_state; 677 678 switch (sc->sc_state) { 679 case IEEE80211_S_INIT: 680 if (ostate == IEEE80211_S_RUN) { 681 /* abort TSF synchronization */ 682 tmp = rum_read(sc, RT2573_TXRX_CSR9); 683 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 684 } 685 break; 686 687 case IEEE80211_S_SCAN: 688 rum_set_chan(sc, ic->ic_curchan); 689 callout_reset(&sc->scan_ch, hz / 5, rum_next_scan, sc); 690 break; 691 692 case IEEE80211_S_AUTH: 693 rum_set_chan(sc, ic->ic_curchan); 694 break; 695 696 case IEEE80211_S_ASSOC: 697 rum_set_chan(sc, ic->ic_curchan); 698 break; 699 700 case IEEE80211_S_RUN: 701 rum_set_chan(sc, ic->ic_curchan); 702 703 ni = ic->ic_bss; 704 705 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 706 rum_update_slot(sc); 707 rum_enable_mrr(sc); 708 rum_set_txpreamble(sc); 709 rum_set_basicrates(sc); 710 rum_set_bssid(sc, ni->ni_bssid); 711 } 712 713 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 714 ic->ic_opmode == IEEE80211_M_IBSS) 715 rum_prepare_beacon(sc); 716 717 if (ic->ic_opmode != IEEE80211_M_MONITOR) 718 rum_enable_tsf_sync(sc); 719 720 /* enable automatic rate adaptation in STA mode */ 721 if (ic->ic_opmode == IEEE80211_M_STA && 722 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 723 rum_amrr_start(sc, ni); 724 725 break; 726 } 727 728 sc->sc_newstate(ic, sc->sc_state, -1); 729 } 730 731 Static int 732 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 733 { 734 struct rum_softc *sc = ic->ic_ifp->if_softc; 735 736 usb_rem_task(sc->sc_udev, &sc->sc_task); 737 callout_stop(&sc->scan_ch); 738 callout_stop(&sc->amrr_ch); 739 740 /* do it in a process context */ 741 sc->sc_state = nstate; 742 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 743 744 return 0; 745 } 746 747 /* quickly determine if a given rate is CCK or OFDM */ 748 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 749 750 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 751 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 752 753 Static void 754 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 755 { 756 struct rum_tx_data *data = priv; 757 struct rum_softc *sc = data->sc; 758 struct ifnet *ifp = &sc->sc_if; 759 int s; 760 761 if (status != USBD_NORMAL_COMPLETION) { 762 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 763 return; 764 765 printf("%s: could not transmit buffer: %s\n", 766 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 767 768 if (status == USBD_STALLED) 769 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 770 771 ifp->if_oerrors++; 772 return; 773 } 774 775 s = splnet(); 776 777 m_freem(data->m); 778 data->m = NULL; 779 ieee80211_free_node(data->ni); 780 data->ni = NULL; 781 782 sc->tx_queued--; 783 ifp->if_opackets++; 784 785 DPRINTFN(10, ("tx done\n")); 786 787 sc->sc_tx_timer = 0; 788 ifp->if_flags &= ~IFF_OACTIVE; 789 rum_start(ifp); 790 791 splx(s); 792 } 793 794 Static void 795 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 796 { 797 struct rum_rx_data *data = priv; 798 struct rum_softc *sc = data->sc; 799 struct ieee80211com *ic = &sc->sc_ic; 800 struct ifnet *ifp = &sc->sc_if; 801 struct rum_rx_desc *desc; 802 struct ieee80211_frame *wh; 803 struct ieee80211_node *ni; 804 struct mbuf *mnew, *m; 805 int s, len; 806 807 if (status != USBD_NORMAL_COMPLETION) { 808 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 809 return; 810 811 if (status == USBD_STALLED) 812 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 813 goto skip; 814 } 815 816 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 817 818 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 819 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 820 len)); 821 ifp->if_ierrors++; 822 goto skip; 823 } 824 825 desc = (struct rum_rx_desc *)data->buf; 826 827 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 828 /* 829 * This should not happen since we did not request to receive 830 * those frames when we filled RT2573_TXRX_CSR0. 831 */ 832 DPRINTFN(5, ("CRC error\n")); 833 ifp->if_ierrors++; 834 goto skip; 835 } 836 837 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 838 if (mnew == NULL) { 839 printf("%s: could not allocate rx mbuf\n", 840 USBDEVNAME(sc->sc_dev)); 841 ifp->if_ierrors++; 842 goto skip; 843 } 844 845 MCLGET(mnew, M_DONTWAIT); 846 if (!(mnew->m_flags & M_EXT)) { 847 printf("%s: could not allocate rx mbuf cluster\n", 848 USBDEVNAME(sc->sc_dev)); 849 m_freem(mnew); 850 ifp->if_ierrors++; 851 goto skip; 852 } 853 854 m = data->m; 855 data->m = mnew; 856 data->buf = mtod(data->m, uint8_t *); 857 858 /* finalize mbuf */ 859 m->m_pkthdr.rcvif = ifp; 860 m->m_data = (caddr_t)(desc + 1); 861 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 862 863 s = splnet(); 864 865 #if NBPFILTER > 0 866 if (sc->sc_drvbpf != NULL) { 867 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 868 869 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 870 tap->wr_rate = rum_rxrate(desc); 871 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 872 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 873 tap->wr_antenna = sc->rx_ant; 874 tap->wr_antsignal = desc->rssi; 875 876 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 877 } 878 #endif 879 880 wh = mtod(m, struct ieee80211_frame *); 881 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 882 883 /* send the frame to the 802.11 layer */ 884 ieee80211_input(ic, m, ni, desc->rssi, 0); 885 886 /* node is no longer needed */ 887 ieee80211_free_node(ni); 888 889 splx(s); 890 891 DPRINTFN(15, ("rx done\n")); 892 893 skip: /* setup a new transfer */ 894 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 895 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 896 usbd_transfer(xfer); 897 } 898 899 /* 900 * This function is only used by the Rx radiotap code. It returns the rate at 901 * which a given frame was received. 902 */ 903 #if NBPFILTER > 0 904 Static uint8_t 905 rum_rxrate(struct rum_rx_desc *desc) 906 { 907 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 908 /* reverse function of rum_plcp_signal */ 909 switch (desc->rate) { 910 case 0xb: return 12; 911 case 0xf: return 18; 912 case 0xa: return 24; 913 case 0xe: return 36; 914 case 0x9: return 48; 915 case 0xd: return 72; 916 case 0x8: return 96; 917 case 0xc: return 108; 918 } 919 } else { 920 if (desc->rate == 10) 921 return 2; 922 if (desc->rate == 20) 923 return 4; 924 if (desc->rate == 55) 925 return 11; 926 if (desc->rate == 110) 927 return 22; 928 } 929 return 2; /* should not get there */ 930 } 931 #endif 932 933 /* 934 * Return the expected ack rate for a frame transmitted at rate `rate'. 935 * XXX: this should depend on the destination node basic rate set. 936 */ 937 Static int 938 rum_ack_rate(struct ieee80211com *ic, int rate) 939 { 940 switch (rate) { 941 /* CCK rates */ 942 case 2: 943 return 2; 944 case 4: 945 case 11: 946 case 22: 947 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 948 949 /* OFDM rates */ 950 case 12: 951 case 18: 952 return 12; 953 case 24: 954 case 36: 955 return 24; 956 case 48: 957 case 72: 958 case 96: 959 case 108: 960 return 48; 961 } 962 963 /* default to 1Mbps */ 964 return 2; 965 } 966 967 /* 968 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 969 * The function automatically determines the operating mode depending on the 970 * given rate. `flags' indicates whether short preamble is in use or not. 971 */ 972 Static uint16_t 973 rum_txtime(int len, int rate, uint32_t flags) 974 { 975 uint16_t txtime; 976 977 if (RUM_RATE_IS_OFDM(rate)) { 978 /* IEEE Std 802.11a-1999, pp. 37 */ 979 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 980 txtime = 16 + 4 + 4 * txtime + 6; 981 } else { 982 /* IEEE Std 802.11b-1999, pp. 28 */ 983 txtime = (16 * len + rate - 1) / rate; 984 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 985 txtime += 72 + 24; 986 else 987 txtime += 144 + 48; 988 } 989 return txtime; 990 } 991 992 Static uint8_t 993 rum_plcp_signal(int rate) 994 { 995 switch (rate) { 996 /* CCK rates (returned values are device-dependent) */ 997 case 2: return 0x0; 998 case 4: return 0x1; 999 case 11: return 0x2; 1000 case 22: return 0x3; 1001 1002 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1003 case 12: return 0xb; 1004 case 18: return 0xf; 1005 case 24: return 0xa; 1006 case 36: return 0xe; 1007 case 48: return 0x9; 1008 case 72: return 0xd; 1009 case 96: return 0x8; 1010 case 108: return 0xc; 1011 1012 /* unsupported rates (should not get there) */ 1013 default: return 0xff; 1014 } 1015 } 1016 1017 Static void 1018 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1019 uint32_t flags, uint16_t xflags, int len, int rate) 1020 { 1021 struct ieee80211com *ic = &sc->sc_ic; 1022 uint16_t plcp_length; 1023 int remainder; 1024 1025 desc->flags = htole32(flags); 1026 desc->flags |= htole32(RT2573_TX_VALID); 1027 desc->flags |= htole32(len << 16); 1028 1029 desc->xflags = htole16(xflags); 1030 1031 desc->wme = htole16( 1032 RT2573_QID(0) | 1033 RT2573_AIFSN(2) | 1034 RT2573_LOGCWMIN(4) | 1035 RT2573_LOGCWMAX(10)); 1036 1037 /* setup PLCP fields */ 1038 desc->plcp_signal = rum_plcp_signal(rate); 1039 desc->plcp_service = 4; 1040 1041 len += IEEE80211_CRC_LEN; 1042 if (RUM_RATE_IS_OFDM(rate)) { 1043 desc->flags |= htole32(RT2573_TX_OFDM); 1044 1045 plcp_length = len & 0xfff; 1046 desc->plcp_length_hi = plcp_length >> 6; 1047 desc->plcp_length_lo = plcp_length & 0x3f; 1048 } else { 1049 plcp_length = (16 * len + rate - 1) / rate; 1050 if (rate == 22) { 1051 remainder = (16 * len) % 22; 1052 if (remainder != 0 && remainder < 7) 1053 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1054 } 1055 desc->plcp_length_hi = plcp_length >> 8; 1056 desc->plcp_length_lo = plcp_length & 0xff; 1057 1058 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1059 desc->plcp_signal |= 0x08; 1060 } 1061 } 1062 1063 #define RUM_TX_TIMEOUT 5000 1064 1065 Static int 1066 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1067 { 1068 struct ieee80211com *ic = &sc->sc_ic; 1069 struct rum_tx_desc *desc; 1070 struct rum_tx_data *data; 1071 struct ieee80211_frame *wh; 1072 uint32_t flags = 0; 1073 uint16_t dur; 1074 usbd_status error; 1075 int xferlen, rate; 1076 1077 data = &sc->tx_data[0]; 1078 desc = (struct rum_tx_desc *)data->buf; 1079 1080 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1081 1082 data->m = m0; 1083 data->ni = ni; 1084 1085 wh = mtod(m0, struct ieee80211_frame *); 1086 1087 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1088 flags |= RT2573_TX_ACK; 1089 1090 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1091 ic->ic_flags) + sc->sifs; 1092 *(uint16_t *)wh->i_dur = htole16(dur); 1093 1094 /* tell hardware to set timestamp in probe responses */ 1095 if ((wh->i_fc[0] & 1096 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1097 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1098 flags |= RT2573_TX_TIMESTAMP; 1099 } 1100 1101 #if NBPFILTER > 0 1102 if (sc->sc_drvbpf != NULL) { 1103 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1104 1105 tap->wt_flags = 0; 1106 tap->wt_rate = rate; 1107 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1108 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1109 tap->wt_antenna = sc->tx_ant; 1110 1111 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1112 } 1113 #endif 1114 1115 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1116 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1117 1118 /* align end on a 4-bytes boundary */ 1119 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1120 1121 /* 1122 * No space left in the last URB to store the extra 4 bytes, force 1123 * sending of another URB. 1124 */ 1125 if ((xferlen % 64) == 0) 1126 xferlen += 4; 1127 1128 DPRINTFN(10, ("sending msg frame len=%u rate=%u xfer len=%u\n", 1129 m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, rate, xferlen)); 1130 1131 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1132 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1133 1134 error = usbd_transfer(data->xfer); 1135 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1136 m_freem(m0); 1137 return error; 1138 } 1139 1140 sc->tx_queued++; 1141 1142 return 0; 1143 } 1144 1145 Static int 1146 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1147 { 1148 struct ieee80211com *ic = &sc->sc_ic; 1149 struct rum_tx_desc *desc; 1150 struct rum_tx_data *data; 1151 struct ieee80211_frame *wh; 1152 struct ieee80211_key *k; 1153 uint32_t flags = 0; 1154 uint16_t dur; 1155 usbd_status error; 1156 int xferlen, rate; 1157 1158 wh = mtod(m0, struct ieee80211_frame *); 1159 1160 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1161 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1162 else 1163 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1164 rate &= IEEE80211_RATE_VAL; 1165 1166 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1167 k = ieee80211_crypto_encap(ic, ni, m0); 1168 if (k == NULL) { 1169 m_freem(m0); 1170 return ENOBUFS; 1171 } 1172 1173 /* packet header may have moved, reset our local pointer */ 1174 wh = mtod(m0, struct ieee80211_frame *); 1175 } 1176 1177 data = &sc->tx_data[0]; 1178 desc = (struct rum_tx_desc *)data->buf; 1179 1180 data->m = m0; 1181 data->ni = ni; 1182 1183 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1184 flags |= RT2573_TX_ACK; 1185 1186 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1187 ic->ic_flags) + sc->sifs; 1188 *(uint16_t *)wh->i_dur = htole16(dur); 1189 } 1190 1191 #if NBPFILTER > 0 1192 if (sc->sc_drvbpf != NULL) { 1193 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1194 1195 tap->wt_flags = 0; 1196 tap->wt_rate = rate; 1197 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1198 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1199 tap->wt_antenna = sc->tx_ant; 1200 1201 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1202 } 1203 #endif 1204 1205 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1206 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1207 1208 /* align end on a 4-bytes boundary */ 1209 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1210 1211 /* 1212 * No space left in the last URB to store the extra 4 bytes, force 1213 * sending of another URB. 1214 */ 1215 if ((xferlen % 64) == 0) 1216 xferlen += 4; 1217 1218 DPRINTFN(10, ("sending data frame len=%u rate=%u xfer len=%u\n", 1219 m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, rate, xferlen)); 1220 1221 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1222 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1223 1224 error = usbd_transfer(data->xfer); 1225 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1226 m_freem(m0); 1227 return error; 1228 } 1229 1230 sc->tx_queued++; 1231 1232 return 0; 1233 } 1234 1235 Static void 1236 rum_start(struct ifnet *ifp) 1237 { 1238 struct rum_softc *sc = ifp->if_softc; 1239 struct ieee80211com *ic = &sc->sc_ic; 1240 struct ether_header *eh; 1241 struct ieee80211_node *ni; 1242 struct mbuf *m0; 1243 1244 for (;;) { 1245 IF_POLL(&ic->ic_mgtq, m0); 1246 if (m0 != NULL) { 1247 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1248 ifp->if_flags |= IFF_OACTIVE; 1249 break; 1250 } 1251 IF_DEQUEUE(&ic->ic_mgtq, m0); 1252 1253 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1254 m0->m_pkthdr.rcvif = NULL; 1255 #if NBPFILTER > 0 1256 if (ic->ic_rawbpf != NULL) 1257 bpf_mtap(ic->ic_rawbpf, m0); 1258 #endif 1259 if (rum_tx_mgt(sc, m0, ni) != 0) 1260 break; 1261 1262 } else { 1263 if (ic->ic_state != IEEE80211_S_RUN) 1264 break; 1265 IFQ_POLL(&ifp->if_snd, m0); 1266 if (m0 == NULL) 1267 break; 1268 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1269 ifp->if_flags |= IFF_OACTIVE; 1270 break; 1271 } 1272 IFQ_DEQUEUE(&ifp->if_snd, m0); 1273 if (m0->m_len < sizeof(struct ether_header) && 1274 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1275 continue; 1276 1277 eh = mtod(m0, struct ether_header *); 1278 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1279 if (ni == NULL) { 1280 m_freem(m0); 1281 continue; 1282 } 1283 #if NBPFILTER > 0 1284 if (ifp->if_bpf != NULL) 1285 bpf_mtap(ifp->if_bpf, m0); 1286 #endif 1287 m0 = ieee80211_encap(ic, m0, ni); 1288 if (m0 == NULL) { 1289 ieee80211_free_node(ni); 1290 continue; 1291 } 1292 #if NBPFILTER > 0 1293 if (ic->ic_rawbpf != NULL) 1294 bpf_mtap(ic->ic_rawbpf, m0); 1295 #endif 1296 if (rum_tx_data(sc, m0, ni) != 0) { 1297 ieee80211_free_node(ni); 1298 ifp->if_oerrors++; 1299 break; 1300 } 1301 } 1302 1303 sc->sc_tx_timer = 5; 1304 ifp->if_timer = 1; 1305 } 1306 } 1307 1308 Static void 1309 rum_watchdog(struct ifnet *ifp) 1310 { 1311 struct rum_softc *sc = ifp->if_softc; 1312 struct ieee80211com *ic = &sc->sc_ic; 1313 1314 ifp->if_timer = 0; 1315 1316 if (sc->sc_tx_timer > 0) { 1317 if (--sc->sc_tx_timer == 0) { 1318 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1319 /*rum_init(ifp); XXX needs a process context! */ 1320 ifp->if_oerrors++; 1321 return; 1322 } 1323 ifp->if_timer = 1; 1324 } 1325 1326 ieee80211_watchdog(ic); 1327 } 1328 1329 Static int 1330 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1331 { 1332 struct rum_softc *sc = ifp->if_softc; 1333 struct ieee80211com *ic = &sc->sc_ic; 1334 int s, error = 0; 1335 1336 s = splnet(); 1337 1338 switch (cmd) { 1339 case SIOCSIFFLAGS: 1340 if (ifp->if_flags & IFF_UP) { 1341 if (ifp->if_flags & IFF_RUNNING) 1342 rum_update_promisc(sc); 1343 else 1344 rum_init(ifp); 1345 } else { 1346 if (ifp->if_flags & IFF_RUNNING) 1347 rum_stop(ifp, 1); 1348 } 1349 break; 1350 1351 default: 1352 error = ieee80211_ioctl(ic, cmd, data); 1353 } 1354 1355 if (error == ENETRESET) { 1356 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1357 (IFF_UP | IFF_RUNNING)) 1358 rum_init(ifp); 1359 error = 0; 1360 } 1361 1362 splx(s); 1363 1364 return error; 1365 } 1366 1367 Static void 1368 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1369 { 1370 usb_device_request_t req; 1371 usbd_status error; 1372 1373 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1374 req.bRequest = RT2573_READ_EEPROM; 1375 USETW(req.wValue, 0); 1376 USETW(req.wIndex, addr); 1377 USETW(req.wLength, len); 1378 1379 error = usbd_do_request(sc->sc_udev, &req, buf); 1380 if (error != 0) { 1381 printf("%s: could not read EEPROM: %s\n", 1382 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1383 } 1384 } 1385 1386 Static uint32_t 1387 rum_read(struct rum_softc *sc, uint16_t reg) 1388 { 1389 uint32_t val; 1390 1391 rum_read_multi(sc, reg, &val, sizeof val); 1392 1393 return le32toh(val); 1394 } 1395 1396 Static void 1397 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1398 { 1399 usb_device_request_t req; 1400 usbd_status error; 1401 1402 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1403 req.bRequest = RT2573_READ_MULTI_MAC; 1404 USETW(req.wValue, 0); 1405 USETW(req.wIndex, reg); 1406 USETW(req.wLength, len); 1407 1408 error = usbd_do_request(sc->sc_udev, &req, buf); 1409 if (error != 0) { 1410 printf("%s: could not multi read MAC register: %s\n", 1411 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1412 } 1413 } 1414 1415 Static void 1416 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1417 { 1418 uint32_t tmp = htole32(val); 1419 1420 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1421 } 1422 1423 Static void 1424 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1425 { 1426 usb_device_request_t req; 1427 usbd_status error; 1428 1429 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1430 req.bRequest = RT2573_WRITE_MULTI_MAC; 1431 USETW(req.wValue, 0); 1432 USETW(req.wIndex, reg); 1433 USETW(req.wLength, len); 1434 1435 error = usbd_do_request(sc->sc_udev, &req, buf); 1436 if (error != 0) { 1437 printf("%s: could not multi write MAC register: %s\n", 1438 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1439 } 1440 } 1441 1442 Static void 1443 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1444 { 1445 uint32_t tmp; 1446 int ntries; 1447 1448 for (ntries = 0; ntries < 5; ntries++) { 1449 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1450 break; 1451 } 1452 if (ntries == 5) { 1453 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1454 return; 1455 } 1456 1457 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1458 rum_write(sc, RT2573_PHY_CSR3, tmp); 1459 } 1460 1461 Static uint8_t 1462 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1463 { 1464 uint32_t val; 1465 int ntries; 1466 1467 for (ntries = 0; ntries < 5; ntries++) { 1468 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1469 break; 1470 } 1471 if (ntries == 5) { 1472 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1473 return 0; 1474 } 1475 1476 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1477 rum_write(sc, RT2573_PHY_CSR3, val); 1478 1479 for (ntries = 0; ntries < 100; ntries++) { 1480 val = rum_read(sc, RT2573_PHY_CSR3); 1481 if (!(val & RT2573_BBP_BUSY)) 1482 return val & 0xff; 1483 DELAY(1); 1484 } 1485 1486 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1487 return 0; 1488 } 1489 1490 Static void 1491 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1492 { 1493 uint32_t tmp; 1494 int ntries; 1495 1496 for (ntries = 0; ntries < 5; ntries++) { 1497 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1498 break; 1499 } 1500 if (ntries == 5) { 1501 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1502 return; 1503 } 1504 1505 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1506 (reg & 3); 1507 rum_write(sc, RT2573_PHY_CSR4, tmp); 1508 1509 /* remember last written value in sc */ 1510 sc->rf_regs[reg] = val; 1511 1512 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1513 } 1514 1515 Static void 1516 rum_select_antenna(struct rum_softc *sc) 1517 { 1518 uint8_t bbp4, bbp77; 1519 uint32_t tmp; 1520 1521 bbp4 = rum_bbp_read(sc, 4); 1522 bbp77 = rum_bbp_read(sc, 77); 1523 1524 /* TBD */ 1525 1526 /* make sure Rx is disabled before switching antenna */ 1527 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1528 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1529 1530 rum_bbp_write(sc, 4, bbp4); 1531 rum_bbp_write(sc, 77, bbp77); 1532 1533 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1534 } 1535 1536 /* 1537 * Enable multi-rate retries for frames sent at OFDM rates. 1538 * In 802.11b/g mode, allow fallback to CCK rates. 1539 */ 1540 Static void 1541 rum_enable_mrr(struct rum_softc *sc) 1542 { 1543 struct ieee80211com *ic = &sc->sc_ic; 1544 uint32_t tmp; 1545 1546 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1547 1548 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1549 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1550 tmp |= RT2573_MRR_CCK_FALLBACK; 1551 tmp |= RT2573_MRR_ENABLED; 1552 1553 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1554 } 1555 1556 Static void 1557 rum_set_txpreamble(struct rum_softc *sc) 1558 { 1559 uint32_t tmp; 1560 1561 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1562 1563 tmp &= ~RT2573_SHORT_PREAMBLE; 1564 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1565 tmp |= RT2573_SHORT_PREAMBLE; 1566 1567 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1568 } 1569 1570 Static void 1571 rum_set_basicrates(struct rum_softc *sc) 1572 { 1573 struct ieee80211com *ic = &sc->sc_ic; 1574 1575 /* update basic rate set */ 1576 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1577 /* 11b basic rates: 1, 2Mbps */ 1578 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1579 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1580 /* 11a basic rates: 6, 12, 24Mbps */ 1581 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1582 } else { 1583 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1584 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1585 } 1586 } 1587 1588 /* 1589 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1590 * driver. 1591 */ 1592 Static void 1593 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1594 { 1595 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1596 uint32_t tmp; 1597 1598 /* update all BBP registers that depend on the band */ 1599 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1600 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1601 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1602 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1603 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1604 } 1605 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1606 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1607 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1608 } 1609 1610 sc->bbp17 = bbp17; 1611 rum_bbp_write(sc, 17, bbp17); 1612 rum_bbp_write(sc, 96, bbp96); 1613 rum_bbp_write(sc, 104, bbp104); 1614 1615 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1616 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1617 rum_bbp_write(sc, 75, 0x80); 1618 rum_bbp_write(sc, 86, 0x80); 1619 rum_bbp_write(sc, 88, 0x80); 1620 } 1621 1622 rum_bbp_write(sc, 35, bbp35); 1623 rum_bbp_write(sc, 97, bbp97); 1624 rum_bbp_write(sc, 98, bbp98); 1625 1626 tmp = rum_read(sc, RT2573_PHY_CSR0); 1627 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1628 if (IEEE80211_IS_CHAN_2GHZ(c)) 1629 tmp |= RT2573_PA_PE_2GHZ; 1630 else 1631 tmp |= RT2573_PA_PE_5GHZ; 1632 rum_write(sc, RT2573_PHY_CSR0, tmp); 1633 1634 /* 802.11a uses a 16 microseconds short interframe space */ 1635 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1636 } 1637 1638 Static void 1639 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1640 { 1641 struct ieee80211com *ic = &sc->sc_ic; 1642 const struct rfprog *rfprog; 1643 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1644 int8_t power; 1645 u_int i, chan; 1646 1647 chan = ieee80211_chan2ieee(ic, c); 1648 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1649 return; 1650 1651 /* select the appropriate RF settings based on what EEPROM says */ 1652 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1653 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1654 1655 /* find the settings for this channel (we know it exists) */ 1656 for (i = 0; rfprog[i].chan != chan; i++); 1657 1658 power = sc->txpow[i]; 1659 if (power < 0) { 1660 bbp94 += power; 1661 power = 0; 1662 } else if (power > 31) { 1663 bbp94 += power - 31; 1664 power = 31; 1665 } 1666 1667 /* 1668 * If we are switching from the 2GHz band to the 5GHz band or 1669 * vice-versa, BBP registers need to be reprogrammed. 1670 */ 1671 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1672 rum_select_band(sc, c); 1673 rum_select_antenna(sc); 1674 } 1675 ic->ic_curchan = c; 1676 1677 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1678 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1679 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1680 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1681 1682 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1683 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1684 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1685 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1686 1687 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1688 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1689 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1690 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1691 1692 DELAY(10); 1693 1694 /* enable smart mode for MIMO-capable RFs */ 1695 bbp3 = rum_bbp_read(sc, 3); 1696 1697 bbp3 &= ~RT2573_SMART_MODE; 1698 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1699 bbp3 |= RT2573_SMART_MODE; 1700 1701 rum_bbp_write(sc, 3, bbp3); 1702 1703 if (bbp94 != RT2573_BBPR94_DEFAULT) 1704 rum_bbp_write(sc, 94, bbp94); 1705 } 1706 1707 /* 1708 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1709 * and HostAP operating modes. 1710 */ 1711 Static void 1712 rum_enable_tsf_sync(struct rum_softc *sc) 1713 { 1714 struct ieee80211com *ic = &sc->sc_ic; 1715 uint32_t tmp; 1716 1717 if (ic->ic_opmode != IEEE80211_M_STA) { 1718 /* 1719 * Change default 16ms TBTT adjustment to 8ms. 1720 * Must be done before enabling beacon generation. 1721 */ 1722 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1723 } 1724 1725 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1726 1727 /* set beacon interval (in 1/16ms unit) */ 1728 tmp |= ic->ic_bss->ni_intval * 16; 1729 1730 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1731 if (ic->ic_opmode == IEEE80211_M_STA) 1732 tmp |= RT2573_TSF_MODE(1); 1733 else 1734 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1735 1736 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1737 } 1738 1739 Static void 1740 rum_update_slot(struct rum_softc *sc) 1741 { 1742 struct ieee80211com *ic = &sc->sc_ic; 1743 uint8_t slottime; 1744 uint32_t tmp; 1745 1746 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1747 1748 tmp = rum_read(sc, RT2573_MAC_CSR9); 1749 tmp = (tmp & ~0xff) | slottime; 1750 rum_write(sc, RT2573_MAC_CSR9, tmp); 1751 1752 DPRINTF(("setting slot time to %uus\n", slottime)); 1753 } 1754 1755 Static void 1756 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1757 { 1758 uint32_t tmp; 1759 1760 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1761 rum_write(sc, RT2573_MAC_CSR4, tmp); 1762 1763 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1764 rum_write(sc, RT2573_MAC_CSR5, tmp); 1765 } 1766 1767 Static void 1768 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1769 { 1770 uint32_t tmp; 1771 1772 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1773 rum_write(sc, RT2573_MAC_CSR2, tmp); 1774 1775 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1776 rum_write(sc, RT2573_MAC_CSR3, tmp); 1777 } 1778 1779 Static void 1780 rum_update_promisc(struct rum_softc *sc) 1781 { 1782 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1783 uint32_t tmp; 1784 1785 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1786 1787 tmp &= ~RT2573_DROP_NOT_TO_ME; 1788 if (!(ifp->if_flags & IFF_PROMISC)) 1789 tmp |= RT2573_DROP_NOT_TO_ME; 1790 1791 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1792 1793 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1794 "entering" : "leaving")); 1795 } 1796 1797 Static const char * 1798 rum_get_rf(int rev) 1799 { 1800 switch (rev) { 1801 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1802 case RT2573_RF_2528: return "RT2528"; 1803 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1804 case RT2573_RF_5226: return "RT5226"; 1805 default: return "unknown"; 1806 } 1807 } 1808 1809 Static void 1810 rum_read_eeprom(struct rum_softc *sc) 1811 { 1812 struct ieee80211com *ic = &sc->sc_ic; 1813 uint16_t val; 1814 #ifdef RUM_DEBUG 1815 int i; 1816 #endif 1817 1818 /* read MAC/BBP type */ 1819 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1820 sc->macbbp_rev = le16toh(val); 1821 1822 /* read MAC address */ 1823 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1824 1825 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1826 val = le16toh(val); 1827 sc->rf_rev = (val >> 11) & 0x1f; 1828 sc->hw_radio = (val >> 10) & 0x1; 1829 sc->rx_ant = (val >> 4) & 0x3; 1830 sc->tx_ant = (val >> 2) & 0x3; 1831 sc->nb_ant = val & 0x3; 1832 1833 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1834 1835 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1836 val = le16toh(val); 1837 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1838 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1839 1840 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1841 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1842 1843 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1844 val = le16toh(val); 1845 if ((val & 0xff) != 0xff) 1846 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1847 1848 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1849 val = le16toh(val); 1850 if ((val & 0xff) != 0xff) 1851 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1852 1853 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1854 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1855 1856 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1857 val = le16toh(val); 1858 if ((val & 0xff) != 0xff) 1859 sc->rffreq = val & 0xff; 1860 1861 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1862 1863 /* read Tx power for all a/b/g channels */ 1864 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1865 /* XXX default Tx power for 802.11a channels */ 1866 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1867 #ifdef RUM_DEBUG 1868 for (i = 0; i < 14; i++) 1869 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1870 #endif 1871 1872 /* read default values for BBP registers */ 1873 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1874 #ifdef RUM_DEBUG 1875 for (i = 0; i < 14; i++) { 1876 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1877 continue; 1878 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1879 sc->bbp_prom[i].val)); 1880 } 1881 #endif 1882 } 1883 1884 Static int 1885 rum_bbp_init(struct rum_softc *sc) 1886 { 1887 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1888 int i, ntries; 1889 uint8_t val; 1890 1891 /* wait for BBP to be ready */ 1892 for (ntries = 0; ntries < 100; ntries++) { 1893 val = rum_bbp_read(sc, 0); 1894 if (val != 0 && val != 0xff) 1895 break; 1896 DELAY(1000); 1897 } 1898 if (ntries == 100) { 1899 printf("%s: timeout waiting for BBP\n", 1900 USBDEVNAME(sc->sc_dev)); 1901 return EIO; 1902 } 1903 1904 /* initialize BBP registers to default values */ 1905 for (i = 0; i < N(rum_def_bbp); i++) 1906 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1907 1908 /* write vendor-specific BBP values (from EEPROM) */ 1909 for (i = 0; i < 16; i++) { 1910 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1911 continue; 1912 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1913 } 1914 1915 return 0; 1916 #undef N 1917 } 1918 1919 Static int 1920 rum_init(struct ifnet *ifp) 1921 { 1922 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1923 struct rum_softc *sc = ifp->if_softc; 1924 struct ieee80211com *ic = &sc->sc_ic; 1925 struct rum_rx_data *data; 1926 uint32_t tmp; 1927 usbd_status error = 0; 1928 int i, ntries; 1929 1930 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1931 if (rum_attachhook(sc)) 1932 goto fail; 1933 } 1934 1935 rum_stop(ifp, 0); 1936 1937 /* initialize MAC registers to default values */ 1938 for (i = 0; i < N(rum_def_mac); i++) 1939 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1940 1941 /* set host ready */ 1942 rum_write(sc, RT2573_MAC_CSR1, 3); 1943 rum_write(sc, RT2573_MAC_CSR1, 0); 1944 1945 /* wait for BBP/RF to wakeup */ 1946 for (ntries = 0; ntries < 1000; ntries++) { 1947 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1948 break; 1949 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1950 DELAY(1000); 1951 } 1952 if (ntries == 1000) { 1953 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1954 USBDEVNAME(sc->sc_dev)); 1955 goto fail; 1956 } 1957 1958 if ((error = rum_bbp_init(sc)) != 0) 1959 goto fail; 1960 1961 /* select default channel */ 1962 rum_select_band(sc, ic->ic_curchan); 1963 rum_select_antenna(sc); 1964 rum_set_chan(sc, ic->ic_curchan); 1965 1966 /* clear STA registers */ 1967 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1968 1969 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1970 rum_set_macaddr(sc, ic->ic_myaddr); 1971 1972 /* initialize ASIC */ 1973 rum_write(sc, RT2573_MAC_CSR1, 4); 1974 1975 /* 1976 * Allocate xfer for AMRR statistics requests. 1977 */ 1978 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 1979 if (sc->amrr_xfer == NULL) { 1980 printf("%s: could not allocate AMRR xfer\n", 1981 USBDEVNAME(sc->sc_dev)); 1982 goto fail; 1983 } 1984 1985 /* 1986 * Open Tx and Rx USB bulk pipes. 1987 */ 1988 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1989 &sc->sc_tx_pipeh); 1990 if (error != 0) { 1991 printf("%s: could not open Tx pipe: %s\n", 1992 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1993 goto fail; 1994 } 1995 1996 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 1997 &sc->sc_rx_pipeh); 1998 if (error != 0) { 1999 printf("%s: could not open Rx pipe: %s\n", 2000 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2001 goto fail; 2002 } 2003 2004 /* 2005 * Allocate Tx and Rx xfer queues. 2006 */ 2007 error = rum_alloc_tx_list(sc); 2008 if (error != 0) { 2009 printf("%s: could not allocate Tx list\n", 2010 USBDEVNAME(sc->sc_dev)); 2011 goto fail; 2012 } 2013 2014 error = rum_alloc_rx_list(sc); 2015 if (error != 0) { 2016 printf("%s: could not allocate Rx list\n", 2017 USBDEVNAME(sc->sc_dev)); 2018 goto fail; 2019 } 2020 2021 /* 2022 * Start up the receive pipe. 2023 */ 2024 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 2025 data = &sc->rx_data[i]; 2026 2027 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2028 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2029 usbd_transfer(data->xfer); 2030 } 2031 2032 /* update Rx filter */ 2033 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2034 2035 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2036 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2037 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2038 RT2573_DROP_ACKCTS; 2039 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2040 tmp |= RT2573_DROP_TODS; 2041 if (!(ifp->if_flags & IFF_PROMISC)) 2042 tmp |= RT2573_DROP_NOT_TO_ME; 2043 } 2044 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2045 2046 ifp->if_flags &= ~IFF_OACTIVE; 2047 ifp->if_flags |= IFF_RUNNING; 2048 2049 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2050 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2051 else 2052 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2053 2054 return 0; 2055 2056 fail: rum_stop(ifp, 1); 2057 return error; 2058 #undef N 2059 } 2060 2061 Static void 2062 rum_stop(struct ifnet *ifp, int disable) 2063 { 2064 struct rum_softc *sc = ifp->if_softc; 2065 struct ieee80211com *ic = &sc->sc_ic; 2066 uint32_t tmp; 2067 2068 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2069 2070 sc->sc_tx_timer = 0; 2071 ifp->if_timer = 0; 2072 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2073 2074 /* disable Rx */ 2075 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2076 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2077 2078 /* reset ASIC */ 2079 rum_write(sc, RT2573_MAC_CSR1, 3); 2080 rum_write(sc, RT2573_MAC_CSR1, 0); 2081 2082 if (sc->sc_rx_pipeh != NULL) { 2083 usbd_abort_pipe(sc->sc_rx_pipeh); 2084 usbd_close_pipe(sc->sc_rx_pipeh); 2085 sc->sc_rx_pipeh = NULL; 2086 } 2087 2088 if (sc->sc_tx_pipeh != NULL) { 2089 usbd_abort_pipe(sc->sc_tx_pipeh); 2090 usbd_close_pipe(sc->sc_tx_pipeh); 2091 sc->sc_tx_pipeh = NULL; 2092 } 2093 2094 rum_free_rx_list(sc); 2095 rum_free_tx_list(sc); 2096 } 2097 2098 Static int 2099 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2100 { 2101 usb_device_request_t req; 2102 uint16_t reg = RT2573_MCU_CODE_BASE; 2103 usbd_status error; 2104 2105 /* copy firmware image into NIC */ 2106 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2107 rum_write(sc, reg, UGETDW(ucode)); 2108 2109 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2110 req.bRequest = RT2573_MCU_CNTL; 2111 USETW(req.wValue, RT2573_MCU_RUN); 2112 USETW(req.wIndex, 0); 2113 USETW(req.wLength, 0); 2114 2115 error = usbd_do_request(sc->sc_udev, &req, NULL); 2116 if (error != 0) { 2117 printf("%s: could not run firmware: %s\n", 2118 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2119 } 2120 return error; 2121 } 2122 2123 Static int 2124 rum_prepare_beacon(struct rum_softc *sc) 2125 { 2126 struct ieee80211com *ic = &sc->sc_ic; 2127 struct rum_tx_desc desc; 2128 struct mbuf *m0; 2129 int rate; 2130 2131 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2132 if (m0 == NULL) { 2133 printf("%s: could not allocate beacon frame\n", 2134 sc->sc_dev.dv_xname); 2135 return ENOBUFS; 2136 } 2137 2138 /* send beacons at the lowest available rate */ 2139 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2140 2141 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2142 m0->m_pkthdr.len, rate); 2143 2144 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2145 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2146 2147 /* copy beacon header and payload into NIC memory */ 2148 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2149 m0->m_pkthdr.len); 2150 2151 m_freem(m0); 2152 2153 return 0; 2154 } 2155 2156 Static void 2157 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2158 { 2159 int i; 2160 2161 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2162 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2163 2164 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2165 2166 /* set rate to some reasonable initial value */ 2167 for (i = ni->ni_rates.rs_nrates - 1; 2168 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2169 i--); 2170 ni->ni_txrate = i; 2171 2172 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2173 } 2174 2175 Static void 2176 rum_amrr_timeout(void *arg) 2177 { 2178 struct rum_softc *sc = arg; 2179 usb_device_request_t req; 2180 int s; 2181 2182 s = splusb(); 2183 2184 /* 2185 * Asynchronously read statistic registers (cleared by read). 2186 */ 2187 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2188 req.bRequest = RT2573_READ_MULTI_MAC; 2189 USETW(req.wValue, 0); 2190 USETW(req.wIndex, RT2573_STA_CSR0); 2191 USETW(req.wLength, sizeof sc->sta); 2192 2193 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2194 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2195 rum_amrr_update); 2196 (void)usbd_transfer(sc->amrr_xfer); 2197 2198 splx(s); 2199 } 2200 2201 Static void 2202 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2203 usbd_status status) 2204 { 2205 struct rum_softc *sc = (struct rum_softc *)priv; 2206 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2207 2208 if (status != USBD_NORMAL_COMPLETION) { 2209 printf("%s: could not retrieve Tx statistics - cancelling " 2210 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2211 return; 2212 } 2213 2214 /* count TX retry-fail as Tx errors */ 2215 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2216 2217 sc->amn.amn_retrycnt = 2218 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2219 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2220 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2221 2222 sc->amn.amn_txcnt = 2223 sc->amn.amn_retrycnt + 2224 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2225 2226 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2227 2228 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2229 } 2230 2231 int 2232 rum_activate(device_ptr_t self, enum devact act) 2233 { 2234 switch (act) { 2235 case DVACT_ACTIVATE: 2236 return EOPNOTSUPP; 2237 2238 case DVACT_DEACTIVATE: 2239 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2240 break; 2241 } 2242 2243 return 0; 2244 } 2245
Indexes created Thu Sep 25 02:09:54 GMT 2025