if_rum.c revision 1.10
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.10 2007/05/07 05:44:00 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 1.10 2007/05/07 05:44:00 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_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_MELCO, USB_PRODUCT_MELCO_SG54HP }, 106 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 107 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 108 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 109 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 110 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 111 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 112 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 113 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 114 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 115 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 116 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 117 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 118 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 119 }; 120 121 Static int rum_attachhook(void *); 122 Static int rum_alloc_tx_list(struct rum_softc *); 123 Static void rum_free_tx_list(struct rum_softc *); 124 Static int rum_alloc_rx_list(struct rum_softc *); 125 Static void rum_free_rx_list(struct rum_softc *); 126 Static int rum_media_change(struct ifnet *); 127 Static void rum_next_scan(void *); 128 Static void rum_task(void *); 129 Static int rum_newstate(struct ieee80211com *, 130 enum ieee80211_state, int); 131 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 132 usbd_status); 133 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 134 usbd_status); 135 #if NBPFILTER > 0 136 Static uint8_t rum_rxrate(struct rum_rx_desc *); 137 #endif 138 Static int rum_ack_rate(struct ieee80211com *, int); 139 Static uint16_t rum_txtime(int, int, uint32_t); 140 Static uint8_t rum_plcp_signal(int); 141 Static void rum_setup_tx_desc(struct rum_softc *, 142 struct rum_tx_desc *, uint32_t, uint16_t, int, 143 int); 144 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 145 struct ieee80211_node *); 146 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 147 struct ieee80211_node *); 148 Static void rum_start(struct ifnet *); 149 Static void rum_watchdog(struct ifnet *); 150 Static int rum_ioctl(struct ifnet *, u_long, void *); 151 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 152 int); 153 Static uint32_t rum_read(struct rum_softc *, uint16_t); 154 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 155 int); 156 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 157 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 158 size_t); 159 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 160 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 161 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 162 Static void rum_select_antenna(struct rum_softc *); 163 Static void rum_enable_mrr(struct rum_softc *); 164 Static void rum_set_txpreamble(struct rum_softc *); 165 Static void rum_set_basicrates(struct rum_softc *); 166 Static void rum_select_band(struct rum_softc *, 167 struct ieee80211_channel *); 168 Static void rum_set_chan(struct rum_softc *, 169 struct ieee80211_channel *); 170 Static void rum_enable_tsf_sync(struct rum_softc *); 171 Static void rum_update_slot(struct rum_softc *); 172 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 173 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 174 Static void rum_update_promisc(struct rum_softc *); 175 Static const char *rum_get_rf(int); 176 Static void rum_read_eeprom(struct rum_softc *); 177 Static int rum_bbp_init(struct rum_softc *); 178 Static int rum_init(struct ifnet *); 179 Static void rum_stop(struct ifnet *, int); 180 Static int rum_load_microcode(struct rum_softc *, const u_char *, 181 size_t); 182 Static int rum_prepare_beacon(struct rum_softc *); 183 Static void rum_amrr_start(struct rum_softc *, 184 struct ieee80211_node *); 185 Static void rum_amrr_timeout(void *); 186 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 187 usbd_status status); 188 189 /* 190 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 191 */ 192 static const struct ieee80211_rateset rum_rateset_11a = 193 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 194 195 static const struct ieee80211_rateset rum_rateset_11b = 196 { 4, { 2, 4, 11, 22 } }; 197 198 static const struct ieee80211_rateset rum_rateset_11g = 199 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 200 201 static const struct { 202 uint32_t reg; 203 uint32_t val; 204 } rum_def_mac[] = { 205 RT2573_DEF_MAC 206 }; 207 208 static const struct { 209 uint8_t reg; 210 uint8_t val; 211 } rum_def_bbp[] = { 212 RT2573_DEF_BBP 213 }; 214 215 static const struct rfprog { 216 uint8_t chan; 217 uint32_t r1, r2, r3, r4; 218 } rum_rf5226[] = { 219 RT2573_RF5226 220 }, rum_rf5225[] = { 221 RT2573_RF5225 222 }; 223 224 USB_DECLARE_DRIVER(rum); 225 226 USB_MATCH(rum) 227 { 228 USB_MATCH_START(rum, uaa); 229 230 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 231 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 232 } 233 234 Static int 235 rum_attachhook(void *xsc) 236 { 237 struct rum_softc *sc = xsc; 238 firmware_handle_t fwh; 239 const char *name = "rum-rt2573"; 240 u_char *ucode; 241 size_t size; 242 int error; 243 244 if ((error = firmware_open("rum", name, &fwh)) != 0) { 245 printf("%s: failed loadfirmware of file %s (error %d)\n", 246 USBDEVNAME(sc->sc_dev), name, error); 247 return error; 248 } 249 size = firmware_get_size(fwh); 250 ucode = firmware_malloc(size); 251 if (ucode == NULL) { 252 printf("%s: failed to allocate firmware memory\n", 253 USBDEVNAME(sc->sc_dev)); 254 firmware_close(fwh); 255 return ENOMEM;; 256 } 257 error = firmware_read(fwh, 0, ucode, size); 258 firmware_close(fwh); 259 if (error != 0) { 260 printf("%s: failed to read firmware (error %d)\n", 261 USBDEVNAME(sc->sc_dev), error); 262 firmware_free(ucode, 0); 263 return error; 264 } 265 266 if (rum_load_microcode(sc, ucode, size) != 0) { 267 printf("%s: could not load 8051 microcode\n", 268 USBDEVNAME(sc->sc_dev)); 269 firmware_free(ucode, 0); 270 return ENXIO; 271 } 272 273 firmware_free(ucode, 0); 274 sc->sc_flags |= RT2573_FWLOADED; 275 276 return 0; 277 } 278 279 USB_ATTACH(rum) 280 { 281 USB_ATTACH_START(rum, sc, uaa); 282 struct ieee80211com *ic = &sc->sc_ic; 283 struct ifnet *ifp = &sc->sc_if; 284 usb_interface_descriptor_t *id; 285 usb_endpoint_descriptor_t *ed; 286 usbd_status error; 287 char *devinfop; 288 int i, ntries; 289 uint32_t tmp; 290 291 sc->sc_udev = uaa->device; 292 sc->sc_flags = 0; 293 294 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 295 USB_ATTACH_SETUP; 296 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 297 usbd_devinfo_free(devinfop); 298 299 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 300 printf("%s: could not set configuration no\n", 301 USBDEVNAME(sc->sc_dev)); 302 USB_ATTACH_ERROR_RETURN; 303 } 304 305 /* get the first interface handle */ 306 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 307 &sc->sc_iface); 308 if (error != 0) { 309 printf("%s: could not get interface handle\n", 310 USBDEVNAME(sc->sc_dev)); 311 USB_ATTACH_ERROR_RETURN; 312 } 313 314 /* 315 * Find endpoints. 316 */ 317 id = usbd_get_interface_descriptor(sc->sc_iface); 318 319 sc->sc_rx_no = sc->sc_tx_no = -1; 320 for (i = 0; i < id->bNumEndpoints; i++) { 321 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 322 if (ed == NULL) { 323 printf("%s: no endpoint descriptor for iface %d\n", 324 USBDEVNAME(sc->sc_dev), i); 325 USB_ATTACH_ERROR_RETURN; 326 } 327 328 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 329 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 330 sc->sc_rx_no = ed->bEndpointAddress; 331 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 332 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 333 sc->sc_tx_no = ed->bEndpointAddress; 334 } 335 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 336 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 337 USB_ATTACH_ERROR_RETURN; 338 } 339 340 usb_init_task(&sc->sc_task, rum_task, sc); 341 callout_init(&sc->scan_ch); 342 343 sc->amrr.amrr_min_success_threshold = 1; 344 sc->amrr.amrr_max_success_threshold = 10; 345 callout_init(&sc->amrr_ch); 346 347 /* retrieve RT2573 rev. no */ 348 for (ntries = 0; ntries < 1000; ntries++) { 349 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 350 break; 351 DELAY(1000); 352 } 353 if (ntries == 1000) { 354 printf("%s: timeout waiting for chip to settle\n", 355 USBDEVNAME(sc->sc_dev)); 356 USB_ATTACH_ERROR_RETURN; 357 } 358 359 /* retrieve MAC address and various other things from EEPROM */ 360 rum_read_eeprom(sc); 361 362 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 363 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 364 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 365 366 ic->ic_ifp = ifp; 367 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 368 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 369 ic->ic_state = IEEE80211_S_INIT; 370 371 /* set device capabilities */ 372 ic->ic_caps = 373 IEEE80211_C_IBSS | /* IBSS mode supported */ 374 IEEE80211_C_MONITOR | /* monitor mode supported */ 375 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 376 IEEE80211_C_TXPMGT | /* tx power management */ 377 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 378 IEEE80211_C_SHSLOT | /* short slot time supported */ 379 IEEE80211_C_WPA; /* 802.11i */ 380 381 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 382 /* set supported .11a rates */ 383 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 384 385 /* set supported .11a channels */ 386 for (i = 34; i <= 46; i += 4) { 387 ic->ic_channels[i].ic_freq = 388 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 389 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 390 } 391 for (i = 36; i <= 64; i += 4) { 392 ic->ic_channels[i].ic_freq = 393 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 394 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 395 } 396 for (i = 100; i <= 140; i += 4) { 397 ic->ic_channels[i].ic_freq = 398 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 399 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 400 } 401 for (i = 149; i <= 165; i += 4) { 402 ic->ic_channels[i].ic_freq = 403 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 404 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 405 } 406 } 407 408 /* set supported .11b and .11g rates */ 409 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 410 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 411 412 /* set supported .11b and .11g channels (1 through 14) */ 413 for (i = 1; i <= 14; i++) { 414 ic->ic_channels[i].ic_freq = 415 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 416 ic->ic_channels[i].ic_flags = 417 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 418 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 419 } 420 421 ifp->if_softc = sc; 422 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 423 ifp->if_init = rum_init; 424 ifp->if_ioctl = rum_ioctl; 425 ifp->if_start = rum_start; 426 ifp->if_watchdog = rum_watchdog; 427 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 428 IFQ_SET_READY(&ifp->if_snd); 429 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 430 431 if_attach(ifp); 432 ieee80211_ifattach(ic); 433 434 /* override state transition machine */ 435 sc->sc_newstate = ic->ic_newstate; 436 ic->ic_newstate = rum_newstate; 437 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 438 439 #if NBPFILTER > 0 440 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 441 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 442 443 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 444 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 445 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 446 447 sc->sc_txtap_len = sizeof sc->sc_txtapu; 448 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 449 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 450 #endif 451 452 ieee80211_announce(ic); 453 454 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 455 USBDEV(sc->sc_dev)); 456 457 USB_ATTACH_SUCCESS_RETURN; 458 } 459 460 USB_DETACH(rum) 461 { 462 USB_DETACH_START(rum, sc); 463 struct ieee80211com *ic = &sc->sc_ic; 464 struct ifnet *ifp = &sc->sc_if; 465 int s; 466 467 s = splusb(); 468 469 rum_stop(ifp, 1); 470 usb_rem_task(sc->sc_udev, &sc->sc_task); 471 callout_stop(&sc->scan_ch); 472 callout_stop(&sc->amrr_ch); 473 474 if (sc->amrr_xfer != NULL) { 475 usbd_free_xfer(sc->amrr_xfer); 476 sc->amrr_xfer = NULL; 477 } 478 479 if (sc->sc_rx_pipeh != NULL) { 480 usbd_abort_pipe(sc->sc_rx_pipeh); 481 usbd_close_pipe(sc->sc_rx_pipeh); 482 } 483 484 if (sc->sc_tx_pipeh != NULL) { 485 usbd_abort_pipe(sc->sc_tx_pipeh); 486 usbd_close_pipe(sc->sc_tx_pipeh); 487 } 488 489 rum_free_rx_list(sc); 490 rum_free_tx_list(sc); 491 492 #if NBPFILTER > 0 493 bpfdetach(ifp); 494 #endif 495 ieee80211_ifdetach(ic); /* free all nodes */ 496 if_detach(ifp); 497 498 splx(s); 499 500 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 501 USBDEV(sc->sc_dev)); 502 503 return 0; 504 } 505 506 Static int 507 rum_alloc_tx_list(struct rum_softc *sc) 508 { 509 struct rum_tx_data *data; 510 int i, error; 511 512 sc->tx_queued = 0; 513 514 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 515 data = &sc->tx_data[i]; 516 517 data->sc = sc; 518 519 data->xfer = usbd_alloc_xfer(sc->sc_udev); 520 if (data->xfer == NULL) { 521 printf("%s: could not allocate tx xfer\n", 522 USBDEVNAME(sc->sc_dev)); 523 error = ENOMEM; 524 goto fail; 525 } 526 527 data->buf = usbd_alloc_buffer(data->xfer, 528 RT2573_TX_DESC_SIZE + MCLBYTES); 529 if (data->buf == NULL) { 530 printf("%s: could not allocate tx buffer\n", 531 USBDEVNAME(sc->sc_dev)); 532 error = ENOMEM; 533 goto fail; 534 } 535 536 /* clean Tx descriptor */ 537 bzero(data->buf, RT2573_TX_DESC_SIZE); 538 } 539 540 return 0; 541 542 fail: rum_free_tx_list(sc); 543 return error; 544 } 545 546 Static void 547 rum_free_tx_list(struct rum_softc *sc) 548 { 549 struct rum_tx_data *data; 550 int i; 551 552 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 553 data = &sc->tx_data[i]; 554 555 if (data->xfer != NULL) { 556 usbd_free_xfer(data->xfer); 557 data->xfer = NULL; 558 } 559 560 if (data->ni != NULL) { 561 ieee80211_free_node(data->ni); 562 data->ni = NULL; 563 } 564 } 565 } 566 567 Static int 568 rum_alloc_rx_list(struct rum_softc *sc) 569 { 570 struct rum_rx_data *data; 571 int i, error; 572 573 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 574 data = &sc->rx_data[i]; 575 576 data->sc = sc; 577 578 data->xfer = usbd_alloc_xfer(sc->sc_udev); 579 if (data->xfer == NULL) { 580 printf("%s: could not allocate rx xfer\n", 581 USBDEVNAME(sc->sc_dev)); 582 error = ENOMEM; 583 goto fail; 584 } 585 586 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 587 printf("%s: could not allocate rx buffer\n", 588 USBDEVNAME(sc->sc_dev)); 589 error = ENOMEM; 590 goto fail; 591 } 592 593 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 594 if (data->m == NULL) { 595 printf("%s: could not allocate rx mbuf\n", 596 USBDEVNAME(sc->sc_dev)); 597 error = ENOMEM; 598 goto fail; 599 } 600 601 MCLGET(data->m, M_DONTWAIT); 602 if (!(data->m->m_flags & M_EXT)) { 603 printf("%s: could not allocate rx mbuf cluster\n", 604 USBDEVNAME(sc->sc_dev)); 605 error = ENOMEM; 606 goto fail; 607 } 608 609 data->buf = mtod(data->m, uint8_t *); 610 } 611 612 return 0; 613 614 fail: rum_free_tx_list(sc); 615 return error; 616 } 617 618 Static void 619 rum_free_rx_list(struct rum_softc *sc) 620 { 621 struct rum_rx_data *data; 622 int i; 623 624 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 625 data = &sc->rx_data[i]; 626 627 if (data->xfer != NULL) { 628 usbd_free_xfer(data->xfer); 629 data->xfer = NULL; 630 } 631 632 if (data->m != NULL) { 633 m_freem(data->m); 634 data->m = NULL; 635 } 636 } 637 } 638 639 Static int 640 rum_media_change(struct ifnet *ifp) 641 { 642 int error; 643 644 error = ieee80211_media_change(ifp); 645 if (error != ENETRESET) 646 return error; 647 648 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 649 rum_init(ifp); 650 651 return 0; 652 } 653 654 /* 655 * This function is called periodically (every 200ms) during scanning to 656 * switch from one channel to another. 657 */ 658 Static void 659 rum_next_scan(void *arg) 660 { 661 struct rum_softc *sc = arg; 662 struct ieee80211com *ic = &sc->sc_ic; 663 664 if (ic->ic_state == IEEE80211_S_SCAN) 665 ieee80211_next_scan(ic); 666 } 667 668 Static void 669 rum_task(void *arg) 670 { 671 struct rum_softc *sc = arg; 672 struct ieee80211com *ic = &sc->sc_ic; 673 enum ieee80211_state ostate; 674 struct ieee80211_node *ni; 675 uint32_t tmp; 676 677 ostate = ic->ic_state; 678 679 switch (sc->sc_state) { 680 case IEEE80211_S_INIT: 681 if (ostate == IEEE80211_S_RUN) { 682 /* abort TSF synchronization */ 683 tmp = rum_read(sc, RT2573_TXRX_CSR9); 684 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 685 } 686 break; 687 688 case IEEE80211_S_SCAN: 689 rum_set_chan(sc, ic->ic_curchan); 690 callout_reset(&sc->scan_ch, hz / 5, rum_next_scan, sc); 691 break; 692 693 case IEEE80211_S_AUTH: 694 rum_set_chan(sc, ic->ic_curchan); 695 break; 696 697 case IEEE80211_S_ASSOC: 698 rum_set_chan(sc, ic->ic_curchan); 699 break; 700 701 case IEEE80211_S_RUN: 702 rum_set_chan(sc, ic->ic_curchan); 703 704 ni = ic->ic_bss; 705 706 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 707 rum_update_slot(sc); 708 rum_enable_mrr(sc); 709 rum_set_txpreamble(sc); 710 rum_set_basicrates(sc); 711 rum_set_bssid(sc, ni->ni_bssid); 712 } 713 714 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 715 ic->ic_opmode == IEEE80211_M_IBSS) 716 rum_prepare_beacon(sc); 717 718 if (ic->ic_opmode != IEEE80211_M_MONITOR) 719 rum_enable_tsf_sync(sc); 720 721 /* enable automatic rate adaptation in STA mode */ 722 if (ic->ic_opmode == IEEE80211_M_STA && 723 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 724 rum_amrr_start(sc, ni); 725 726 break; 727 } 728 729 sc->sc_newstate(ic, sc->sc_state, -1); 730 } 731 732 Static int 733 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 734 { 735 struct rum_softc *sc = ic->ic_ifp->if_softc; 736 737 usb_rem_task(sc->sc_udev, &sc->sc_task); 738 callout_stop(&sc->scan_ch); 739 callout_stop(&sc->amrr_ch); 740 741 /* do it in a process context */ 742 sc->sc_state = nstate; 743 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 744 745 return 0; 746 } 747 748 /* quickly determine if a given rate is CCK or OFDM */ 749 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 750 751 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 752 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 753 754 Static void 755 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 756 { 757 struct rum_tx_data *data = priv; 758 struct rum_softc *sc = data->sc; 759 struct ifnet *ifp = &sc->sc_if; 760 int s; 761 762 if (status != USBD_NORMAL_COMPLETION) { 763 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 764 return; 765 766 printf("%s: could not transmit buffer: %s\n", 767 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 768 769 if (status == USBD_STALLED) 770 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 771 772 ifp->if_oerrors++; 773 return; 774 } 775 776 s = splnet(); 777 778 m_freem(data->m); 779 data->m = NULL; 780 ieee80211_free_node(data->ni); 781 data->ni = NULL; 782 783 sc->tx_queued--; 784 ifp->if_opackets++; 785 786 DPRINTFN(10, ("tx done\n")); 787 788 sc->sc_tx_timer = 0; 789 ifp->if_flags &= ~IFF_OACTIVE; 790 rum_start(ifp); 791 792 splx(s); 793 } 794 795 Static void 796 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 797 { 798 struct rum_rx_data *data = priv; 799 struct rum_softc *sc = data->sc; 800 struct ieee80211com *ic = &sc->sc_ic; 801 struct ifnet *ifp = &sc->sc_if; 802 struct rum_rx_desc *desc; 803 struct ieee80211_frame *wh; 804 struct ieee80211_node *ni; 805 struct mbuf *mnew, *m; 806 int s, len; 807 808 if (status != USBD_NORMAL_COMPLETION) { 809 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 810 return; 811 812 if (status == USBD_STALLED) 813 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 814 goto skip; 815 } 816 817 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 818 819 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 820 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 821 len)); 822 ifp->if_ierrors++; 823 goto skip; 824 } 825 826 desc = (struct rum_rx_desc *)data->buf; 827 828 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 829 /* 830 * This should not happen since we did not request to receive 831 * those frames when we filled RT2573_TXRX_CSR0. 832 */ 833 DPRINTFN(5, ("CRC error\n")); 834 ifp->if_ierrors++; 835 goto skip; 836 } 837 838 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 839 if (mnew == NULL) { 840 printf("%s: could not allocate rx mbuf\n", 841 USBDEVNAME(sc->sc_dev)); 842 ifp->if_ierrors++; 843 goto skip; 844 } 845 846 MCLGET(mnew, M_DONTWAIT); 847 if (!(mnew->m_flags & M_EXT)) { 848 printf("%s: could not allocate rx mbuf cluster\n", 849 USBDEVNAME(sc->sc_dev)); 850 m_freem(mnew); 851 ifp->if_ierrors++; 852 goto skip; 853 } 854 855 m = data->m; 856 data->m = mnew; 857 data->buf = mtod(data->m, uint8_t *); 858 859 /* finalize mbuf */ 860 m->m_pkthdr.rcvif = ifp; 861 m->m_data = (void *)(desc + 1); 862 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 863 864 s = splnet(); 865 866 #if NBPFILTER > 0 867 if (sc->sc_drvbpf != NULL) { 868 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 869 870 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 871 tap->wr_rate = rum_rxrate(desc); 872 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 873 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 874 tap->wr_antenna = sc->rx_ant; 875 tap->wr_antsignal = desc->rssi; 876 877 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 878 } 879 #endif 880 881 wh = mtod(m, struct ieee80211_frame *); 882 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 883 884 /* send the frame to the 802.11 layer */ 885 ieee80211_input(ic, m, ni, desc->rssi, 0); 886 887 /* node is no longer needed */ 888 ieee80211_free_node(ni); 889 890 splx(s); 891 892 DPRINTFN(15, ("rx done\n")); 893 894 skip: /* setup a new transfer */ 895 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 896 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 897 usbd_transfer(xfer); 898 } 899 900 /* 901 * This function is only used by the Rx radiotap code. It returns the rate at 902 * which a given frame was received. 903 */ 904 #if NBPFILTER > 0 905 Static uint8_t 906 rum_rxrate(struct rum_rx_desc *desc) 907 { 908 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 909 /* reverse function of rum_plcp_signal */ 910 switch (desc->rate) { 911 case 0xb: return 12; 912 case 0xf: return 18; 913 case 0xa: return 24; 914 case 0xe: return 36; 915 case 0x9: return 48; 916 case 0xd: return 72; 917 case 0x8: return 96; 918 case 0xc: return 108; 919 } 920 } else { 921 if (desc->rate == 10) 922 return 2; 923 if (desc->rate == 20) 924 return 4; 925 if (desc->rate == 55) 926 return 11; 927 if (desc->rate == 110) 928 return 22; 929 } 930 return 2; /* should not get there */ 931 } 932 #endif 933 934 /* 935 * Return the expected ack rate for a frame transmitted at rate `rate'. 936 * XXX: this should depend on the destination node basic rate set. 937 */ 938 Static int 939 rum_ack_rate(struct ieee80211com *ic, int rate) 940 { 941 switch (rate) { 942 /* CCK rates */ 943 case 2: 944 return 2; 945 case 4: 946 case 11: 947 case 22: 948 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 949 950 /* OFDM rates */ 951 case 12: 952 case 18: 953 return 12; 954 case 24: 955 case 36: 956 return 24; 957 case 48: 958 case 72: 959 case 96: 960 case 108: 961 return 48; 962 } 963 964 /* default to 1Mbps */ 965 return 2; 966 } 967 968 /* 969 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 970 * The function automatically determines the operating mode depending on the 971 * given rate. `flags' indicates whether short preamble is in use or not. 972 */ 973 Static uint16_t 974 rum_txtime(int len, int rate, uint32_t flags) 975 { 976 uint16_t txtime; 977 978 if (RUM_RATE_IS_OFDM(rate)) { 979 /* IEEE Std 802.11a-1999, pp. 37 */ 980 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 981 txtime = 16 + 4 + 4 * txtime + 6; 982 } else { 983 /* IEEE Std 802.11b-1999, pp. 28 */ 984 txtime = (16 * len + rate - 1) / rate; 985 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 986 txtime += 72 + 24; 987 else 988 txtime += 144 + 48; 989 } 990 return txtime; 991 } 992 993 Static uint8_t 994 rum_plcp_signal(int rate) 995 { 996 switch (rate) { 997 /* CCK rates (returned values are device-dependent) */ 998 case 2: return 0x0; 999 case 4: return 0x1; 1000 case 11: return 0x2; 1001 case 22: return 0x3; 1002 1003 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1004 case 12: return 0xb; 1005 case 18: return 0xf; 1006 case 24: return 0xa; 1007 case 36: return 0xe; 1008 case 48: return 0x9; 1009 case 72: return 0xd; 1010 case 96: return 0x8; 1011 case 108: return 0xc; 1012 1013 /* unsupported rates (should not get there) */ 1014 default: return 0xff; 1015 } 1016 } 1017 1018 Static void 1019 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1020 uint32_t flags, uint16_t xflags, int len, int rate) 1021 { 1022 struct ieee80211com *ic = &sc->sc_ic; 1023 uint16_t plcp_length; 1024 int remainder; 1025 1026 desc->flags = htole32(flags); 1027 desc->flags |= htole32(RT2573_TX_VALID); 1028 desc->flags |= htole32(len << 16); 1029 1030 desc->xflags = htole16(xflags); 1031 1032 desc->wme = htole16( 1033 RT2573_QID(0) | 1034 RT2573_AIFSN(2) | 1035 RT2573_LOGCWMIN(4) | 1036 RT2573_LOGCWMAX(10)); 1037 1038 /* setup PLCP fields */ 1039 desc->plcp_signal = rum_plcp_signal(rate); 1040 desc->plcp_service = 4; 1041 1042 len += IEEE80211_CRC_LEN; 1043 if (RUM_RATE_IS_OFDM(rate)) { 1044 desc->flags |= htole32(RT2573_TX_OFDM); 1045 1046 plcp_length = len & 0xfff; 1047 desc->plcp_length_hi = plcp_length >> 6; 1048 desc->plcp_length_lo = plcp_length & 0x3f; 1049 } else { 1050 plcp_length = (16 * len + rate - 1) / rate; 1051 if (rate == 22) { 1052 remainder = (16 * len) % 22; 1053 if (remainder != 0 && remainder < 7) 1054 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1055 } 1056 desc->plcp_length_hi = plcp_length >> 8; 1057 desc->plcp_length_lo = plcp_length & 0xff; 1058 1059 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1060 desc->plcp_signal |= 0x08; 1061 } 1062 } 1063 1064 #define RUM_TX_TIMEOUT 5000 1065 1066 Static int 1067 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1068 { 1069 struct ieee80211com *ic = &sc->sc_ic; 1070 struct rum_tx_desc *desc; 1071 struct rum_tx_data *data; 1072 struct ieee80211_frame *wh; 1073 uint32_t flags = 0; 1074 uint16_t dur; 1075 usbd_status error; 1076 int xferlen, rate; 1077 1078 data = &sc->tx_data[0]; 1079 desc = (struct rum_tx_desc *)data->buf; 1080 1081 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1082 1083 data->m = m0; 1084 data->ni = ni; 1085 1086 wh = mtod(m0, struct ieee80211_frame *); 1087 1088 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1089 flags |= RT2573_TX_ACK; 1090 1091 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1092 ic->ic_flags) + sc->sifs; 1093 *(uint16_t *)wh->i_dur = htole16(dur); 1094 1095 /* tell hardware to set timestamp in probe responses */ 1096 if ((wh->i_fc[0] & 1097 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1098 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1099 flags |= RT2573_TX_TIMESTAMP; 1100 } 1101 1102 #if NBPFILTER > 0 1103 if (sc->sc_drvbpf != NULL) { 1104 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1105 1106 tap->wt_flags = 0; 1107 tap->wt_rate = rate; 1108 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1109 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1110 tap->wt_antenna = sc->tx_ant; 1111 1112 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1113 } 1114 #endif 1115 1116 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1117 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1118 1119 /* align end on a 4-bytes boundary */ 1120 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1121 1122 /* 1123 * No space left in the last URB to store the extra 4 bytes, force 1124 * sending of another URB. 1125 */ 1126 if ((xferlen % 64) == 0) 1127 xferlen += 4; 1128 1129 DPRINTFN(10, ("sending msg frame len=%zu rate=%u xfer len=%u\n", 1130 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1131 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, 1222 rate, xferlen)); 1223 1224 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1225 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1226 1227 error = usbd_transfer(data->xfer); 1228 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1229 m_freem(m0); 1230 return error; 1231 } 1232 1233 sc->tx_queued++; 1234 1235 return 0; 1236 } 1237 1238 Static void 1239 rum_start(struct ifnet *ifp) 1240 { 1241 struct rum_softc *sc = ifp->if_softc; 1242 struct ieee80211com *ic = &sc->sc_ic; 1243 struct ether_header *eh; 1244 struct ieee80211_node *ni; 1245 struct mbuf *m0; 1246 1247 for (;;) { 1248 IF_POLL(&ic->ic_mgtq, m0); 1249 if (m0 != NULL) { 1250 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1251 ifp->if_flags |= IFF_OACTIVE; 1252 break; 1253 } 1254 IF_DEQUEUE(&ic->ic_mgtq, m0); 1255 1256 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1257 m0->m_pkthdr.rcvif = NULL; 1258 #if NBPFILTER > 0 1259 if (ic->ic_rawbpf != NULL) 1260 bpf_mtap(ic->ic_rawbpf, m0); 1261 #endif 1262 if (rum_tx_mgt(sc, m0, ni) != 0) 1263 break; 1264 1265 } else { 1266 if (ic->ic_state != IEEE80211_S_RUN) 1267 break; 1268 IFQ_POLL(&ifp->if_snd, m0); 1269 if (m0 == NULL) 1270 break; 1271 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1272 ifp->if_flags |= IFF_OACTIVE; 1273 break; 1274 } 1275 IFQ_DEQUEUE(&ifp->if_snd, m0); 1276 if (m0->m_len < sizeof(struct ether_header) && 1277 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1278 continue; 1279 1280 eh = mtod(m0, struct ether_header *); 1281 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1282 if (ni == NULL) { 1283 m_freem(m0); 1284 continue; 1285 } 1286 #if NBPFILTER > 0 1287 if (ifp->if_bpf != NULL) 1288 bpf_mtap(ifp->if_bpf, m0); 1289 #endif 1290 m0 = ieee80211_encap(ic, m0, ni); 1291 if (m0 == NULL) { 1292 ieee80211_free_node(ni); 1293 continue; 1294 } 1295 #if NBPFILTER > 0 1296 if (ic->ic_rawbpf != NULL) 1297 bpf_mtap(ic->ic_rawbpf, m0); 1298 #endif 1299 if (rum_tx_data(sc, m0, ni) != 0) { 1300 ieee80211_free_node(ni); 1301 ifp->if_oerrors++; 1302 break; 1303 } 1304 } 1305 1306 sc->sc_tx_timer = 5; 1307 ifp->if_timer = 1; 1308 } 1309 } 1310 1311 Static void 1312 rum_watchdog(struct ifnet *ifp) 1313 { 1314 struct rum_softc *sc = ifp->if_softc; 1315 struct ieee80211com *ic = &sc->sc_ic; 1316 1317 ifp->if_timer = 0; 1318 1319 if (sc->sc_tx_timer > 0) { 1320 if (--sc->sc_tx_timer == 0) { 1321 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1322 /*rum_init(ifp); XXX needs a process context! */ 1323 ifp->if_oerrors++; 1324 return; 1325 } 1326 ifp->if_timer = 1; 1327 } 1328 1329 ieee80211_watchdog(ic); 1330 } 1331 1332 Static int 1333 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1334 { 1335 struct rum_softc *sc = ifp->if_softc; 1336 struct ieee80211com *ic = &sc->sc_ic; 1337 int s, error = 0; 1338 1339 s = splnet(); 1340 1341 switch (cmd) { 1342 case SIOCSIFFLAGS: 1343 if (ifp->if_flags & IFF_UP) { 1344 if (ifp->if_flags & IFF_RUNNING) 1345 rum_update_promisc(sc); 1346 else 1347 rum_init(ifp); 1348 } else { 1349 if (ifp->if_flags & IFF_RUNNING) 1350 rum_stop(ifp, 1); 1351 } 1352 break; 1353 1354 default: 1355 error = ieee80211_ioctl(ic, cmd, data); 1356 } 1357 1358 if (error == ENETRESET) { 1359 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1360 (IFF_UP | IFF_RUNNING)) 1361 rum_init(ifp); 1362 error = 0; 1363 } 1364 1365 splx(s); 1366 1367 return error; 1368 } 1369 1370 Static void 1371 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1372 { 1373 usb_device_request_t req; 1374 usbd_status error; 1375 1376 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1377 req.bRequest = RT2573_READ_EEPROM; 1378 USETW(req.wValue, 0); 1379 USETW(req.wIndex, addr); 1380 USETW(req.wLength, len); 1381 1382 error = usbd_do_request(sc->sc_udev, &req, buf); 1383 if (error != 0) { 1384 printf("%s: could not read EEPROM: %s\n", 1385 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1386 } 1387 } 1388 1389 Static uint32_t 1390 rum_read(struct rum_softc *sc, uint16_t reg) 1391 { 1392 uint32_t val; 1393 1394 rum_read_multi(sc, reg, &val, sizeof val); 1395 1396 return le32toh(val); 1397 } 1398 1399 Static void 1400 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1401 { 1402 usb_device_request_t req; 1403 usbd_status error; 1404 1405 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1406 req.bRequest = RT2573_READ_MULTI_MAC; 1407 USETW(req.wValue, 0); 1408 USETW(req.wIndex, reg); 1409 USETW(req.wLength, len); 1410 1411 error = usbd_do_request(sc->sc_udev, &req, buf); 1412 if (error != 0) { 1413 printf("%s: could not multi read MAC register: %s\n", 1414 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1415 } 1416 } 1417 1418 Static void 1419 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1420 { 1421 uint32_t tmp = htole32(val); 1422 1423 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1424 } 1425 1426 Static void 1427 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1428 { 1429 usb_device_request_t req; 1430 usbd_status error; 1431 1432 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1433 req.bRequest = RT2573_WRITE_MULTI_MAC; 1434 USETW(req.wValue, 0); 1435 USETW(req.wIndex, reg); 1436 USETW(req.wLength, len); 1437 1438 error = usbd_do_request(sc->sc_udev, &req, buf); 1439 if (error != 0) { 1440 printf("%s: could not multi write MAC register: %s\n", 1441 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1442 } 1443 } 1444 1445 Static void 1446 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1447 { 1448 uint32_t tmp; 1449 int ntries; 1450 1451 for (ntries = 0; ntries < 5; ntries++) { 1452 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1453 break; 1454 } 1455 if (ntries == 5) { 1456 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1457 return; 1458 } 1459 1460 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1461 rum_write(sc, RT2573_PHY_CSR3, tmp); 1462 } 1463 1464 Static uint8_t 1465 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1466 { 1467 uint32_t val; 1468 int ntries; 1469 1470 for (ntries = 0; ntries < 5; ntries++) { 1471 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1472 break; 1473 } 1474 if (ntries == 5) { 1475 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1476 return 0; 1477 } 1478 1479 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1480 rum_write(sc, RT2573_PHY_CSR3, val); 1481 1482 for (ntries = 0; ntries < 100; ntries++) { 1483 val = rum_read(sc, RT2573_PHY_CSR3); 1484 if (!(val & RT2573_BBP_BUSY)) 1485 return val & 0xff; 1486 DELAY(1); 1487 } 1488 1489 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1490 return 0; 1491 } 1492 1493 Static void 1494 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1495 { 1496 uint32_t tmp; 1497 int ntries; 1498 1499 for (ntries = 0; ntries < 5; ntries++) { 1500 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1501 break; 1502 } 1503 if (ntries == 5) { 1504 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1505 return; 1506 } 1507 1508 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1509 (reg & 3); 1510 rum_write(sc, RT2573_PHY_CSR4, tmp); 1511 1512 /* remember last written value in sc */ 1513 sc->rf_regs[reg] = val; 1514 1515 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1516 } 1517 1518 Static void 1519 rum_select_antenna(struct rum_softc *sc) 1520 { 1521 uint8_t bbp4, bbp77; 1522 uint32_t tmp; 1523 1524 bbp4 = rum_bbp_read(sc, 4); 1525 bbp77 = rum_bbp_read(sc, 77); 1526 1527 /* TBD */ 1528 1529 /* make sure Rx is disabled before switching antenna */ 1530 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1531 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1532 1533 rum_bbp_write(sc, 4, bbp4); 1534 rum_bbp_write(sc, 77, bbp77); 1535 1536 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1537 } 1538 1539 /* 1540 * Enable multi-rate retries for frames sent at OFDM rates. 1541 * In 802.11b/g mode, allow fallback to CCK rates. 1542 */ 1543 Static void 1544 rum_enable_mrr(struct rum_softc *sc) 1545 { 1546 struct ieee80211com *ic = &sc->sc_ic; 1547 uint32_t tmp; 1548 1549 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1550 1551 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1552 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1553 tmp |= RT2573_MRR_CCK_FALLBACK; 1554 tmp |= RT2573_MRR_ENABLED; 1555 1556 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1557 } 1558 1559 Static void 1560 rum_set_txpreamble(struct rum_softc *sc) 1561 { 1562 uint32_t tmp; 1563 1564 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1565 1566 tmp &= ~RT2573_SHORT_PREAMBLE; 1567 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1568 tmp |= RT2573_SHORT_PREAMBLE; 1569 1570 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1571 } 1572 1573 Static void 1574 rum_set_basicrates(struct rum_softc *sc) 1575 { 1576 struct ieee80211com *ic = &sc->sc_ic; 1577 1578 /* update basic rate set */ 1579 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1580 /* 11b basic rates: 1, 2Mbps */ 1581 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1582 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1583 /* 11a basic rates: 6, 12, 24Mbps */ 1584 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1585 } else { 1586 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1587 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1588 } 1589 } 1590 1591 /* 1592 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1593 * driver. 1594 */ 1595 Static void 1596 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1597 { 1598 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1599 uint32_t tmp; 1600 1601 /* update all BBP registers that depend on the band */ 1602 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1603 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1604 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1605 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1606 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1607 } 1608 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1609 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1610 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1611 } 1612 1613 sc->bbp17 = bbp17; 1614 rum_bbp_write(sc, 17, bbp17); 1615 rum_bbp_write(sc, 96, bbp96); 1616 rum_bbp_write(sc, 104, bbp104); 1617 1618 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1619 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1620 rum_bbp_write(sc, 75, 0x80); 1621 rum_bbp_write(sc, 86, 0x80); 1622 rum_bbp_write(sc, 88, 0x80); 1623 } 1624 1625 rum_bbp_write(sc, 35, bbp35); 1626 rum_bbp_write(sc, 97, bbp97); 1627 rum_bbp_write(sc, 98, bbp98); 1628 1629 tmp = rum_read(sc, RT2573_PHY_CSR0); 1630 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1631 if (IEEE80211_IS_CHAN_2GHZ(c)) 1632 tmp |= RT2573_PA_PE_2GHZ; 1633 else 1634 tmp |= RT2573_PA_PE_5GHZ; 1635 rum_write(sc, RT2573_PHY_CSR0, tmp); 1636 1637 /* 802.11a uses a 16 microseconds short interframe space */ 1638 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1639 } 1640 1641 Static void 1642 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1643 { 1644 struct ieee80211com *ic = &sc->sc_ic; 1645 const struct rfprog *rfprog; 1646 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1647 int8_t power; 1648 u_int i, chan; 1649 1650 chan = ieee80211_chan2ieee(ic, c); 1651 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1652 return; 1653 1654 /* select the appropriate RF settings based on what EEPROM says */ 1655 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1656 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1657 1658 /* find the settings for this channel (we know it exists) */ 1659 for (i = 0; rfprog[i].chan != chan; i++); 1660 1661 power = sc->txpow[i]; 1662 if (power < 0) { 1663 bbp94 += power; 1664 power = 0; 1665 } else if (power > 31) { 1666 bbp94 += power - 31; 1667 power = 31; 1668 } 1669 1670 /* 1671 * If we are switching from the 2GHz band to the 5GHz band or 1672 * vice-versa, BBP registers need to be reprogrammed. 1673 */ 1674 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1675 rum_select_band(sc, c); 1676 rum_select_antenna(sc); 1677 } 1678 ic->ic_curchan = c; 1679 1680 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1681 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1682 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1683 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1684 1685 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1686 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1687 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1688 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1689 1690 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1691 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1692 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1693 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1694 1695 DELAY(10); 1696 1697 /* enable smart mode for MIMO-capable RFs */ 1698 bbp3 = rum_bbp_read(sc, 3); 1699 1700 bbp3 &= ~RT2573_SMART_MODE; 1701 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1702 bbp3 |= RT2573_SMART_MODE; 1703 1704 rum_bbp_write(sc, 3, bbp3); 1705 1706 if (bbp94 != RT2573_BBPR94_DEFAULT) 1707 rum_bbp_write(sc, 94, bbp94); 1708 } 1709 1710 /* 1711 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1712 * and HostAP operating modes. 1713 */ 1714 Static void 1715 rum_enable_tsf_sync(struct rum_softc *sc) 1716 { 1717 struct ieee80211com *ic = &sc->sc_ic; 1718 uint32_t tmp; 1719 1720 if (ic->ic_opmode != IEEE80211_M_STA) { 1721 /* 1722 * Change default 16ms TBTT adjustment to 8ms. 1723 * Must be done before enabling beacon generation. 1724 */ 1725 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1726 } 1727 1728 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1729 1730 /* set beacon interval (in 1/16ms unit) */ 1731 tmp |= ic->ic_bss->ni_intval * 16; 1732 1733 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1734 if (ic->ic_opmode == IEEE80211_M_STA) 1735 tmp |= RT2573_TSF_MODE(1); 1736 else 1737 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1738 1739 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1740 } 1741 1742 Static void 1743 rum_update_slot(struct rum_softc *sc) 1744 { 1745 struct ieee80211com *ic = &sc->sc_ic; 1746 uint8_t slottime; 1747 uint32_t tmp; 1748 1749 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1750 1751 tmp = rum_read(sc, RT2573_MAC_CSR9); 1752 tmp = (tmp & ~0xff) | slottime; 1753 rum_write(sc, RT2573_MAC_CSR9, tmp); 1754 1755 DPRINTF(("setting slot time to %uus\n", slottime)); 1756 } 1757 1758 Static void 1759 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1760 { 1761 uint32_t tmp; 1762 1763 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1764 rum_write(sc, RT2573_MAC_CSR4, tmp); 1765 1766 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1767 rum_write(sc, RT2573_MAC_CSR5, tmp); 1768 } 1769 1770 Static void 1771 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1772 { 1773 uint32_t tmp; 1774 1775 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1776 rum_write(sc, RT2573_MAC_CSR2, tmp); 1777 1778 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1779 rum_write(sc, RT2573_MAC_CSR3, tmp); 1780 } 1781 1782 Static void 1783 rum_update_promisc(struct rum_softc *sc) 1784 { 1785 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1786 uint32_t tmp; 1787 1788 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1789 1790 tmp &= ~RT2573_DROP_NOT_TO_ME; 1791 if (!(ifp->if_flags & IFF_PROMISC)) 1792 tmp |= RT2573_DROP_NOT_TO_ME; 1793 1794 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1795 1796 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1797 "entering" : "leaving")); 1798 } 1799 1800 Static const char * 1801 rum_get_rf(int rev) 1802 { 1803 switch (rev) { 1804 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1805 case RT2573_RF_2528: return "RT2528"; 1806 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1807 case RT2573_RF_5226: return "RT5226"; 1808 default: return "unknown"; 1809 } 1810 } 1811 1812 Static void 1813 rum_read_eeprom(struct rum_softc *sc) 1814 { 1815 struct ieee80211com *ic = &sc->sc_ic; 1816 uint16_t val; 1817 #ifdef RUM_DEBUG 1818 int i; 1819 #endif 1820 1821 /* read MAC/BBP type */ 1822 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1823 sc->macbbp_rev = le16toh(val); 1824 1825 /* read MAC address */ 1826 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1827 1828 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1829 val = le16toh(val); 1830 sc->rf_rev = (val >> 11) & 0x1f; 1831 sc->hw_radio = (val >> 10) & 0x1; 1832 sc->rx_ant = (val >> 4) & 0x3; 1833 sc->tx_ant = (val >> 2) & 0x3; 1834 sc->nb_ant = val & 0x3; 1835 1836 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1837 1838 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1839 val = le16toh(val); 1840 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1841 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1842 1843 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1844 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1845 1846 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1847 val = le16toh(val); 1848 if ((val & 0xff) != 0xff) 1849 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1850 1851 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1852 val = le16toh(val); 1853 if ((val & 0xff) != 0xff) 1854 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1855 1856 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1857 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1858 1859 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1860 val = le16toh(val); 1861 if ((val & 0xff) != 0xff) 1862 sc->rffreq = val & 0xff; 1863 1864 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1865 1866 /* read Tx power for all a/b/g channels */ 1867 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1868 /* XXX default Tx power for 802.11a channels */ 1869 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1870 #ifdef RUM_DEBUG 1871 for (i = 0; i < 14; i++) 1872 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1873 #endif 1874 1875 /* read default values for BBP registers */ 1876 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1877 #ifdef RUM_DEBUG 1878 for (i = 0; i < 14; i++) { 1879 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1880 continue; 1881 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1882 sc->bbp_prom[i].val)); 1883 } 1884 #endif 1885 } 1886 1887 Static int 1888 rum_bbp_init(struct rum_softc *sc) 1889 { 1890 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1891 int i, ntries; 1892 uint8_t val; 1893 1894 /* wait for BBP to be ready */ 1895 for (ntries = 0; ntries < 100; ntries++) { 1896 val = rum_bbp_read(sc, 0); 1897 if (val != 0 && val != 0xff) 1898 break; 1899 DELAY(1000); 1900 } 1901 if (ntries == 100) { 1902 printf("%s: timeout waiting for BBP\n", 1903 USBDEVNAME(sc->sc_dev)); 1904 return EIO; 1905 } 1906 1907 /* initialize BBP registers to default values */ 1908 for (i = 0; i < N(rum_def_bbp); i++) 1909 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1910 1911 /* write vendor-specific BBP values (from EEPROM) */ 1912 for (i = 0; i < 16; i++) { 1913 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1914 continue; 1915 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1916 } 1917 1918 return 0; 1919 #undef N 1920 } 1921 1922 Static int 1923 rum_init(struct ifnet *ifp) 1924 { 1925 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1926 struct rum_softc *sc = ifp->if_softc; 1927 struct ieee80211com *ic = &sc->sc_ic; 1928 struct rum_rx_data *data; 1929 uint32_t tmp; 1930 usbd_status error = 0; 1931 int i, ntries; 1932 1933 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1934 if (rum_attachhook(sc)) 1935 goto fail; 1936 } 1937 1938 rum_stop(ifp, 0); 1939 1940 /* initialize MAC registers to default values */ 1941 for (i = 0; i < N(rum_def_mac); i++) 1942 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1943 1944 /* set host ready */ 1945 rum_write(sc, RT2573_MAC_CSR1, 3); 1946 rum_write(sc, RT2573_MAC_CSR1, 0); 1947 1948 /* wait for BBP/RF to wakeup */ 1949 for (ntries = 0; ntries < 1000; ntries++) { 1950 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1951 break; 1952 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1953 DELAY(1000); 1954 } 1955 if (ntries == 1000) { 1956 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1957 USBDEVNAME(sc->sc_dev)); 1958 goto fail; 1959 } 1960 1961 if ((error = rum_bbp_init(sc)) != 0) 1962 goto fail; 1963 1964 /* select default channel */ 1965 rum_select_band(sc, ic->ic_curchan); 1966 rum_select_antenna(sc); 1967 rum_set_chan(sc, ic->ic_curchan); 1968 1969 /* clear STA registers */ 1970 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1971 1972 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1973 rum_set_macaddr(sc, ic->ic_myaddr); 1974 1975 /* initialize ASIC */ 1976 rum_write(sc, RT2573_MAC_CSR1, 4); 1977 1978 /* 1979 * Allocate xfer for AMRR statistics requests. 1980 */ 1981 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 1982 if (sc->amrr_xfer == NULL) { 1983 printf("%s: could not allocate AMRR xfer\n", 1984 USBDEVNAME(sc->sc_dev)); 1985 goto fail; 1986 } 1987 1988 /* 1989 * Open Tx and Rx USB bulk pipes. 1990 */ 1991 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1992 &sc->sc_tx_pipeh); 1993 if (error != 0) { 1994 printf("%s: could not open Tx pipe: %s\n", 1995 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1996 goto fail; 1997 } 1998 1999 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2000 &sc->sc_rx_pipeh); 2001 if (error != 0) { 2002 printf("%s: could not open Rx pipe: %s\n", 2003 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2004 goto fail; 2005 } 2006 2007 /* 2008 * Allocate Tx and Rx xfer queues. 2009 */ 2010 error = rum_alloc_tx_list(sc); 2011 if (error != 0) { 2012 printf("%s: could not allocate Tx list\n", 2013 USBDEVNAME(sc->sc_dev)); 2014 goto fail; 2015 } 2016 2017 error = rum_alloc_rx_list(sc); 2018 if (error != 0) { 2019 printf("%s: could not allocate Rx list\n", 2020 USBDEVNAME(sc->sc_dev)); 2021 goto fail; 2022 } 2023 2024 /* 2025 * Start up the receive pipe. 2026 */ 2027 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 2028 data = &sc->rx_data[i]; 2029 2030 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2031 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2032 usbd_transfer(data->xfer); 2033 } 2034 2035 /* update Rx filter */ 2036 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2037 2038 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2039 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2040 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2041 RT2573_DROP_ACKCTS; 2042 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2043 tmp |= RT2573_DROP_TODS; 2044 if (!(ifp->if_flags & IFF_PROMISC)) 2045 tmp |= RT2573_DROP_NOT_TO_ME; 2046 } 2047 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2048 2049 ifp->if_flags &= ~IFF_OACTIVE; 2050 ifp->if_flags |= IFF_RUNNING; 2051 2052 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2053 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2054 else 2055 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2056 2057 return 0; 2058 2059 fail: rum_stop(ifp, 1); 2060 return error; 2061 #undef N 2062 } 2063 2064 Static void 2065 rum_stop(struct ifnet *ifp, int disable) 2066 { 2067 struct rum_softc *sc = ifp->if_softc; 2068 struct ieee80211com *ic = &sc->sc_ic; 2069 uint32_t tmp; 2070 2071 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2072 2073 sc->sc_tx_timer = 0; 2074 ifp->if_timer = 0; 2075 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2076 2077 /* disable Rx */ 2078 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2079 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2080 2081 /* reset ASIC */ 2082 rum_write(sc, RT2573_MAC_CSR1, 3); 2083 rum_write(sc, RT2573_MAC_CSR1, 0); 2084 2085 if (sc->sc_rx_pipeh != NULL) { 2086 usbd_abort_pipe(sc->sc_rx_pipeh); 2087 usbd_close_pipe(sc->sc_rx_pipeh); 2088 sc->sc_rx_pipeh = NULL; 2089 } 2090 2091 if (sc->sc_tx_pipeh != NULL) { 2092 usbd_abort_pipe(sc->sc_tx_pipeh); 2093 usbd_close_pipe(sc->sc_tx_pipeh); 2094 sc->sc_tx_pipeh = NULL; 2095 } 2096 2097 rum_free_rx_list(sc); 2098 rum_free_tx_list(sc); 2099 } 2100 2101 Static int 2102 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2103 { 2104 usb_device_request_t req; 2105 uint16_t reg = RT2573_MCU_CODE_BASE; 2106 usbd_status error; 2107 2108 /* copy firmware image into NIC */ 2109 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2110 rum_write(sc, reg, UGETDW(ucode)); 2111 2112 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2113 req.bRequest = RT2573_MCU_CNTL; 2114 USETW(req.wValue, RT2573_MCU_RUN); 2115 USETW(req.wIndex, 0); 2116 USETW(req.wLength, 0); 2117 2118 error = usbd_do_request(sc->sc_udev, &req, NULL); 2119 if (error != 0) { 2120 printf("%s: could not run firmware: %s\n", 2121 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2122 } 2123 return error; 2124 } 2125 2126 Static int 2127 rum_prepare_beacon(struct rum_softc *sc) 2128 { 2129 struct ieee80211com *ic = &sc->sc_ic; 2130 struct rum_tx_desc desc; 2131 struct mbuf *m0; 2132 int rate; 2133 2134 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2135 if (m0 == NULL) { 2136 printf("%s: could not allocate beacon frame\n", 2137 sc->sc_dev.dv_xname); 2138 return ENOBUFS; 2139 } 2140 2141 /* send beacons at the lowest available rate */ 2142 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2143 2144 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2145 m0->m_pkthdr.len, rate); 2146 2147 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2148 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2149 2150 /* copy beacon header and payload into NIC memory */ 2151 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2152 m0->m_pkthdr.len); 2153 2154 m_freem(m0); 2155 2156 return 0; 2157 } 2158 2159 Static void 2160 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2161 { 2162 int i; 2163 2164 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2165 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2166 2167 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2168 2169 /* set rate to some reasonable initial value */ 2170 for (i = ni->ni_rates.rs_nrates - 1; 2171 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2172 i--); 2173 ni->ni_txrate = i; 2174 2175 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2176 } 2177 2178 Static void 2179 rum_amrr_timeout(void *arg) 2180 { 2181 struct rum_softc *sc = arg; 2182 usb_device_request_t req; 2183 int s; 2184 2185 s = splusb(); 2186 2187 /* 2188 * Asynchronously read statistic registers (cleared by read). 2189 */ 2190 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2191 req.bRequest = RT2573_READ_MULTI_MAC; 2192 USETW(req.wValue, 0); 2193 USETW(req.wIndex, RT2573_STA_CSR0); 2194 USETW(req.wLength, sizeof sc->sta); 2195 2196 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2197 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2198 rum_amrr_update); 2199 (void)usbd_transfer(sc->amrr_xfer); 2200 2201 splx(s); 2202 } 2203 2204 Static void 2205 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2206 usbd_status status) 2207 { 2208 struct rum_softc *sc = (struct rum_softc *)priv; 2209 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2210 2211 if (status != USBD_NORMAL_COMPLETION) { 2212 printf("%s: could not retrieve Tx statistics - cancelling " 2213 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2214 return; 2215 } 2216 2217 /* count TX retry-fail as Tx errors */ 2218 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2219 2220 sc->amn.amn_retrycnt = 2221 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2222 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2223 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2224 2225 sc->amn.amn_txcnt = 2226 sc->amn.amn_retrycnt + 2227 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2228 2229 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2230 2231 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2232 } 2233 2234 int 2235 rum_activate(device_ptr_t self, enum devact act) 2236 { 2237 switch (act) { 2238 case DVACT_ACTIVATE: 2239 return EOPNOTSUPP; 2240 2241 case DVACT_DEACTIVATE: 2242 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2243 break; 2244 } 2245 2246 return 0; 2247 } 2248
Indexes created Wed Oct 01 19:09:53 GMT 2025