if_rum.c revision 1.6.4.1
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.6.4.1 2007/05/22 14:57:37 itohy Exp $ */ 3 4 /*- 5 * Copyright (c) 2005, 2006 Damien Bergamini <damien.bergamini (at) free.fr> 6 * Copyright (c) 2006 Niall O'Higgins <niallo (at) openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 /*- 22 * Ralink Technology RT2501USB/RT2601USB chipset driver 23 * http://www.ralinktech.com/ 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_rum.c,v 1.6.4.1 2007/05/22 14:57:37 itohy Exp $"); 28 29 #include "bpfilter.h" 30 31 #include <sys/param.h> 32 #include <sys/sockio.h> 33 #include <sys/sysctl.h> 34 #include <sys/mbuf.h> 35 #include <sys/kernel.h> 36 #include <sys/socket.h> 37 #include <sys/systm.h> 38 #include <sys/malloc.h> 39 #include <sys/conf.h> 40 #include <sys/device.h> 41 42 #include <machine/bus.h> 43 #include <machine/endian.h> 44 #include <machine/intr.h> 45 46 #if NBPFILTER > 0 47 #include <net/bpf.h> 48 #endif 49 #include <net/if.h> 50 #include <net/if_arp.h> 51 #include <net/if_dl.h> 52 #include <net/if_ether.h> 53 #include <net/if_media.h> 54 #include <net/if_types.h> 55 56 #include <netinet/in.h> 57 #include <netinet/in_systm.h> 58 #include <netinet/in_var.h> 59 #include <netinet/ip.h> 60 61 #include <net80211/ieee80211_netbsd.h> 62 #include <net80211/ieee80211_var.h> 63 #include <net80211/ieee80211_amrr.h> 64 #include <net80211/ieee80211_radiotap.h> 65 66 #include <dev/firmload.h> 67 68 #include <dev/usb/usb.h> 69 #include <dev/usb/usbdi.h> 70 #include <dev/usb/usbdi_util.h> 71 #include <dev/usb/usbdevs.h> 72 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_MELCO, USB_PRODUCT_MELCO_SG54HP }, 105 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573 }, 106 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_2 }, 107 { USB_VENDOR_MSI, USB_PRODUCT_MSI_RT2573_3 }, 108 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUS54MINI2 }, 109 { USB_VENDOR_PLANEX2, USB_PRODUCT_PLANEX2_GWUSMM }, 110 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573 }, 111 { USB_VENDOR_QCOM, USB_PRODUCT_QCOM_RT2573_2 }, 112 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2573 }, 113 { USB_VENDOR_RALINK_2, USB_PRODUCT_RALINK_2_RT2573 }, 114 { USB_VENDOR_RALINK, USB_PRODUCT_RALINK_RT2671 }, 115 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL113R2 }, 116 { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_WL172 }, 117 { USB_VENDOR_SURECOM, USB_PRODUCT_SURECOM_RT2573 } 118 }; 119 120 Static int rum_attachhook(void *); 121 Static int rum_alloc_tx_list(struct rum_softc *); 122 Static void rum_free_tx_list(struct rum_softc *); 123 Static int rum_alloc_rx_list(struct rum_softc *); 124 Static void rum_free_rx_list(struct rum_softc *); 125 Static int rum_media_change(struct ifnet *); 126 Static void rum_next_scan(void *); 127 Static void rum_task(void *); 128 Static int rum_newstate(struct ieee80211com *, 129 enum ieee80211_state, int); 130 Static void rum_txeof(usbd_xfer_handle, usbd_private_handle, 131 usbd_status); 132 Static void rum_rxeof(usbd_xfer_handle, usbd_private_handle, 133 usbd_status); 134 #if NBPFILTER > 0 135 Static uint8_t rum_rxrate(struct rum_rx_desc *); 136 #endif 137 Static int rum_ack_rate(struct ieee80211com *, int); 138 Static uint16_t rum_txtime(int, int, uint32_t); 139 Static uint8_t rum_plcp_signal(int); 140 Static void rum_setup_tx_desc(struct rum_softc *, 141 struct rum_tx_desc *, uint32_t, uint16_t, int, 142 int); 143 Static int rum_tx_mgt(struct rum_softc *, struct mbuf *, 144 struct ieee80211_node *); 145 Static int rum_tx_data(struct rum_softc *, struct mbuf *, 146 struct ieee80211_node *); 147 Static void rum_start(struct ifnet *); 148 Static void rum_watchdog(struct ifnet *); 149 Static int rum_ioctl(struct ifnet *, u_long, caddr_t); 150 Static void rum_eeprom_read(struct rum_softc *, uint16_t, void *, 151 int); 152 Static uint32_t rum_read(struct rum_softc *, uint16_t); 153 Static void rum_read_multi(struct rum_softc *, uint16_t, void *, 154 int); 155 Static void rum_write(struct rum_softc *, uint16_t, uint32_t); 156 Static void rum_write_multi(struct rum_softc *, uint16_t, void *, 157 size_t); 158 Static void rum_bbp_write(struct rum_softc *, uint8_t, uint8_t); 159 Static uint8_t rum_bbp_read(struct rum_softc *, uint8_t); 160 Static void rum_rf_write(struct rum_softc *, uint8_t, uint32_t); 161 Static void rum_select_antenna(struct rum_softc *); 162 Static void rum_enable_mrr(struct rum_softc *); 163 Static void rum_set_txpreamble(struct rum_softc *); 164 Static void rum_set_basicrates(struct rum_softc *); 165 Static void rum_select_band(struct rum_softc *, 166 struct ieee80211_channel *); 167 Static void rum_set_chan(struct rum_softc *, 168 struct ieee80211_channel *); 169 Static void rum_enable_tsf_sync(struct rum_softc *); 170 Static void rum_update_slot(struct rum_softc *); 171 Static void rum_set_bssid(struct rum_softc *, const uint8_t *); 172 Static void rum_set_macaddr(struct rum_softc *, const uint8_t *); 173 Static void rum_update_promisc(struct rum_softc *); 174 Static const char *rum_get_rf(int); 175 Static void rum_read_eeprom(struct rum_softc *); 176 Static int rum_bbp_init(struct rum_softc *); 177 Static int rum_init(struct ifnet *); 178 Static void rum_stop(struct ifnet *, int); 179 Static int rum_load_microcode(struct rum_softc *, const u_char *, 180 size_t); 181 Static int rum_prepare_beacon(struct rum_softc *); 182 Static void rum_amrr_start(struct rum_softc *, 183 struct ieee80211_node *); 184 Static void rum_amrr_timeout(void *); 185 Static void rum_amrr_update(usbd_xfer_handle, usbd_private_handle, 186 usbd_status status); 187 188 /* 189 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 190 */ 191 static const struct ieee80211_rateset rum_rateset_11a = 192 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 193 194 static const struct ieee80211_rateset rum_rateset_11b = 195 { 4, { 2, 4, 11, 22 } }; 196 197 static const struct ieee80211_rateset rum_rateset_11g = 198 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 199 200 static const struct { 201 uint32_t reg; 202 uint32_t val; 203 } rum_def_mac[] = { 204 RT2573_DEF_MAC 205 }; 206 207 static const struct { 208 uint8_t reg; 209 uint8_t val; 210 } rum_def_bbp[] = { 211 RT2573_DEF_BBP 212 }; 213 214 static const struct rfprog { 215 uint8_t chan; 216 uint32_t r1, r2, r3, r4; 217 } rum_rf5226[] = { 218 RT2573_RF5226 219 }, rum_rf5225[] = { 220 RT2573_RF5225 221 }; 222 223 USB_DECLARE_DRIVER(rum); 224 225 USB_MATCH(rum) 226 { 227 USB_MATCH_START(rum, uaa); 228 229 if (uaa->iface != NULL) 230 return UMATCH_NONE; 231 232 return (usb_lookup(rum_devs, uaa->vendor, uaa->product) != NULL) ? 233 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 234 } 235 236 Static int 237 rum_attachhook(void *xsc) 238 { 239 struct rum_softc *sc = xsc; 240 firmware_handle_t fwh; 241 const char *name = "rum-rt2573"; 242 u_char *ucode; 243 size_t size; 244 int error; 245 246 if ((error = firmware_open("rum", name, &fwh)) != 0) { 247 printf("%s: failed loadfirmware of file %s (error %d)\n", 248 USBDEVNAME(sc->sc_dev), name, error); 249 return error; 250 } 251 size = firmware_get_size(fwh); 252 ucode = firmware_malloc(size); 253 if (ucode == NULL) { 254 printf("%s: failed to allocate firmware memory\n", 255 USBDEVNAME(sc->sc_dev)); 256 firmware_close(fwh); 257 return ENOMEM;; 258 } 259 error = firmware_read(fwh, 0, ucode, size); 260 firmware_close(fwh); 261 if (error != 0) { 262 printf("%s: failed to read firmware (error %d)\n", 263 USBDEVNAME(sc->sc_dev), error); 264 firmware_free(ucode, 0); 265 return error; 266 } 267 268 if (rum_load_microcode(sc, ucode, size) != 0) { 269 printf("%s: could not load 8051 microcode\n", 270 USBDEVNAME(sc->sc_dev)); 271 firmware_free(ucode, 0); 272 return ENXIO; 273 } 274 275 firmware_free(ucode, 0); 276 sc->sc_flags |= RT2573_FWLOADED; 277 278 return 0; 279 } 280 281 USB_ATTACH(rum) 282 { 283 USB_ATTACH_START(rum, sc, uaa); 284 struct ieee80211com *ic = &sc->sc_ic; 285 struct ifnet *ifp = &sc->sc_if; 286 usb_interface_descriptor_t *id; 287 usb_endpoint_descriptor_t *ed; 288 usbd_status error; 289 char *devinfop; 290 int i, ntries; 291 uint32_t tmp; 292 293 sc->sc_udev = uaa->device; 294 sc->sc_flags = 0; 295 296 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 297 USB_ATTACH_SETUP; 298 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 299 usbd_devinfo_free(devinfop); 300 301 if (usbd_set_config_no(sc->sc_udev, RT2573_CONFIG_NO, 0) != 0) { 302 printf("%s: could not set configuration no\n", 303 USBDEVNAME(sc->sc_dev)); 304 USB_ATTACH_ERROR_RETURN; 305 } 306 307 /* get the first interface handle */ 308 error = usbd_device2interface_handle(sc->sc_udev, RT2573_IFACE_INDEX, 309 &sc->sc_iface); 310 if (error != 0) { 311 printf("%s: could not get interface handle\n", 312 USBDEVNAME(sc->sc_dev)); 313 USB_ATTACH_ERROR_RETURN; 314 } 315 316 /* 317 * Find endpoints. 318 */ 319 id = usbd_get_interface_descriptor(sc->sc_iface); 320 321 sc->sc_rx_no = sc->sc_tx_no = -1; 322 for (i = 0; i < id->bNumEndpoints; i++) { 323 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 324 if (ed == NULL) { 325 printf("%s: no endpoint descriptor for iface %d\n", 326 USBDEVNAME(sc->sc_dev), i); 327 USB_ATTACH_ERROR_RETURN; 328 } 329 330 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 331 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 332 sc->sc_rx_no = ed->bEndpointAddress; 333 else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 334 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) 335 sc->sc_tx_no = ed->bEndpointAddress; 336 } 337 if (sc->sc_rx_no == -1 || sc->sc_tx_no == -1) { 338 printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev)); 339 USB_ATTACH_ERROR_RETURN; 340 } 341 342 usb_init_task(&sc->sc_task, rum_task, sc); 343 callout_init(&sc->scan_ch); 344 345 sc->amrr.amrr_min_success_threshold = 1; 346 sc->amrr.amrr_max_success_threshold = 10; 347 callout_init(&sc->amrr_ch); 348 349 /* retrieve RT2573 rev. no */ 350 tmp = 0; /* XXX shut up warning */ 351 for (ntries = 0; ntries < 1000; ntries++) { 352 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 353 break; 354 DELAY(1000); 355 } 356 if (ntries == 1000) { 357 printf("%s: timeout waiting for chip to settle\n", 358 USBDEVNAME(sc->sc_dev)); 359 USB_ATTACH_ERROR_RETURN; 360 } 361 362 /* retrieve MAC address and various other things from EEPROM */ 363 rum_read_eeprom(sc); 364 365 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 366 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 367 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 368 369 ic->ic_ifp = ifp; 370 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 371 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 372 ic->ic_state = IEEE80211_S_INIT; 373 374 /* set device capabilities */ 375 ic->ic_caps = 376 IEEE80211_C_IBSS | /* IBSS mode supported */ 377 IEEE80211_C_MONITOR | /* monitor mode supported */ 378 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 379 IEEE80211_C_TXPMGT | /* tx power management */ 380 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 381 IEEE80211_C_SHSLOT | /* short slot time supported */ 382 IEEE80211_C_WPA; /* 802.11i */ 383 384 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 385 /* set supported .11a rates */ 386 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 387 388 /* set supported .11a channels */ 389 for (i = 34; i <= 46; i += 4) { 390 ic->ic_channels[i].ic_freq = 391 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 392 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 393 } 394 for (i = 36; i <= 64; i += 4) { 395 ic->ic_channels[i].ic_freq = 396 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 397 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 398 } 399 for (i = 100; i <= 140; i += 4) { 400 ic->ic_channels[i].ic_freq = 401 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 402 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 403 } 404 for (i = 149; i <= 165; i += 4) { 405 ic->ic_channels[i].ic_freq = 406 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 407 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 408 } 409 } 410 411 /* set supported .11b and .11g rates */ 412 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 413 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 414 415 /* set supported .11b and .11g channels (1 through 14) */ 416 for (i = 1; i <= 14; i++) { 417 ic->ic_channels[i].ic_freq = 418 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 419 ic->ic_channels[i].ic_flags = 420 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 421 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 422 } 423 424 ifp->if_softc = sc; 425 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 426 ifp->if_init = rum_init; 427 ifp->if_ioctl = rum_ioctl; 428 ifp->if_start = rum_start; 429 ifp->if_watchdog = rum_watchdog; 430 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 431 IFQ_SET_READY(&ifp->if_snd); 432 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 433 434 if_attach(ifp); 435 ieee80211_ifattach(ic); 436 437 /* override state transition machine */ 438 sc->sc_newstate = ic->ic_newstate; 439 ic->ic_newstate = rum_newstate; 440 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 441 442 #if NBPFILTER > 0 443 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 444 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 445 446 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 447 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 448 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 449 450 sc->sc_txtap_len = sizeof sc->sc_txtapu; 451 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 452 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 453 #endif 454 455 ieee80211_announce(ic); 456 457 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 458 USBDEV(sc->sc_dev)); 459 460 USB_ATTACH_SUCCESS_RETURN; 461 } 462 463 USB_DETACH(rum) 464 { 465 USB_DETACH_START(rum, sc); 466 struct ieee80211com *ic = &sc->sc_ic; 467 struct ifnet *ifp = &sc->sc_if; 468 int s; 469 470 s = splusb(); 471 472 rum_stop(ifp, 1); 473 usb_rem_task(sc->sc_udev, &sc->sc_task); 474 callout_stop(&sc->scan_ch); 475 callout_stop(&sc->amrr_ch); 476 477 if (sc->amrr_xfer != NULL) { 478 usbd_free_xfer(sc->amrr_xfer); 479 sc->amrr_xfer = NULL; 480 } 481 482 if (sc->sc_rx_pipeh != NULL) { 483 usbd_abort_pipe(sc->sc_rx_pipeh); 484 usbd_close_pipe(sc->sc_rx_pipeh); 485 } 486 487 if (sc->sc_tx_pipeh != NULL) { 488 usbd_abort_pipe(sc->sc_tx_pipeh); 489 usbd_close_pipe(sc->sc_tx_pipeh); 490 } 491 492 rum_free_rx_list(sc); 493 rum_free_tx_list(sc); 494 495 #if NBPFILTER > 0 496 bpfdetach(ifp); 497 #endif 498 ieee80211_ifdetach(ic); /* free all nodes */ 499 if_detach(ifp); 500 501 splx(s); 502 503 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 504 USBDEV(sc->sc_dev)); 505 506 return 0; 507 } 508 509 Static int 510 rum_alloc_tx_list(struct rum_softc *sc) 511 { 512 struct rum_tx_data *data; 513 int i, error; 514 515 sc->tx_queued = 0; 516 517 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 518 data = &sc->tx_data[i]; 519 520 data->sc = sc; 521 522 data->xfer = usbd_alloc_xfer(sc->sc_udev, sc->sc_tx_pipeh); 523 if (data->xfer == NULL) { 524 printf("%s: could not allocate tx xfer\n", 525 USBDEVNAME(sc->sc_dev)); 526 error = ENOMEM; 527 goto fail; 528 } 529 530 data->buf = usbd_alloc_buffer(data->xfer, 531 RT2573_TX_DESC_SIZE + MCLBYTES); 532 if (data->buf == NULL) { 533 printf("%s: could not allocate tx buffer\n", 534 USBDEVNAME(sc->sc_dev)); 535 error = ENOMEM; 536 goto fail; 537 } 538 539 /* clean Tx descriptor */ 540 bzero(data->buf, RT2573_TX_DESC_SIZE); 541 } 542 543 return 0; 544 545 fail: rum_free_tx_list(sc); 546 return error; 547 } 548 549 Static void 550 rum_free_tx_list(struct rum_softc *sc) 551 { 552 struct rum_tx_data *data; 553 int i; 554 555 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 556 data = &sc->tx_data[i]; 557 558 if (data->xfer != NULL) { 559 usbd_free_xfer(data->xfer); 560 data->xfer = NULL; 561 } 562 563 if (data->ni != NULL) { 564 ieee80211_free_node(data->ni); 565 data->ni = NULL; 566 } 567 } 568 } 569 570 Static int 571 rum_alloc_rx_list(struct rum_softc *sc) 572 { 573 struct rum_rx_data *data; 574 int i, error; 575 576 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 577 data = &sc->rx_data[i]; 578 579 data->sc = sc; 580 581 data->xfer = usbd_alloc_xfer(sc->sc_udev, sc->sc_rx_pipeh); 582 if (data->xfer == NULL) { 583 printf("%s: could not allocate rx xfer\n", 584 USBDEVNAME(sc->sc_dev)); 585 error = ENOMEM; 586 goto fail; 587 } 588 589 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 590 printf("%s: could not allocate rx buffer\n", 591 USBDEVNAME(sc->sc_dev)); 592 error = ENOMEM; 593 goto fail; 594 } 595 596 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 597 if (data->m == NULL) { 598 printf("%s: could not allocate rx mbuf\n", 599 USBDEVNAME(sc->sc_dev)); 600 error = ENOMEM; 601 goto fail; 602 } 603 604 MCLGET(data->m, M_DONTWAIT); 605 if (!(data->m->m_flags & M_EXT)) { 606 printf("%s: could not allocate rx mbuf cluster\n", 607 USBDEVNAME(sc->sc_dev)); 608 error = ENOMEM; 609 goto fail; 610 } 611 612 data->buf = mtod(data->m, uint8_t *); 613 } 614 615 return 0; 616 617 fail: rum_free_tx_list(sc); 618 return error; 619 } 620 621 Static void 622 rum_free_rx_list(struct rum_softc *sc) 623 { 624 struct rum_rx_data *data; 625 int i; 626 627 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 628 data = &sc->rx_data[i]; 629 630 if (data->xfer != NULL) { 631 usbd_free_xfer(data->xfer); 632 data->xfer = NULL; 633 } 634 635 if (data->m != NULL) { 636 m_freem(data->m); 637 data->m = NULL; 638 } 639 } 640 } 641 642 Static int 643 rum_media_change(struct ifnet *ifp) 644 { 645 int error; 646 647 error = ieee80211_media_change(ifp); 648 if (error != ENETRESET) 649 return error; 650 651 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 652 rum_init(ifp); 653 654 return 0; 655 } 656 657 /* 658 * This function is called periodically (every 200ms) during scanning to 659 * switch from one channel to another. 660 */ 661 Static void 662 rum_next_scan(void *arg) 663 { 664 struct rum_softc *sc = arg; 665 struct ieee80211com *ic = &sc->sc_ic; 666 667 if (ic->ic_state == IEEE80211_S_SCAN) 668 ieee80211_next_scan(ic); 669 } 670 671 Static void 672 rum_task(void *arg) 673 { 674 struct rum_softc *sc = arg; 675 struct ieee80211com *ic = &sc->sc_ic; 676 enum ieee80211_state ostate; 677 struct ieee80211_node *ni; 678 uint32_t tmp; 679 680 ostate = ic->ic_state; 681 682 switch (sc->sc_state) { 683 case IEEE80211_S_INIT: 684 if (ostate == IEEE80211_S_RUN) { 685 /* abort TSF synchronization */ 686 tmp = rum_read(sc, RT2573_TXRX_CSR9); 687 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 688 } 689 break; 690 691 case IEEE80211_S_SCAN: 692 rum_set_chan(sc, ic->ic_curchan); 693 callout_reset(&sc->scan_ch, hz / 5, rum_next_scan, sc); 694 break; 695 696 case IEEE80211_S_AUTH: 697 rum_set_chan(sc, ic->ic_curchan); 698 break; 699 700 case IEEE80211_S_ASSOC: 701 rum_set_chan(sc, ic->ic_curchan); 702 break; 703 704 case IEEE80211_S_RUN: 705 rum_set_chan(sc, ic->ic_curchan); 706 707 ni = ic->ic_bss; 708 709 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 710 rum_update_slot(sc); 711 rum_enable_mrr(sc); 712 rum_set_txpreamble(sc); 713 rum_set_basicrates(sc); 714 rum_set_bssid(sc, ni->ni_bssid); 715 } 716 717 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 718 ic->ic_opmode == IEEE80211_M_IBSS) 719 rum_prepare_beacon(sc); 720 721 if (ic->ic_opmode != IEEE80211_M_MONITOR) 722 rum_enable_tsf_sync(sc); 723 724 /* enable automatic rate adaptation in STA mode */ 725 if (ic->ic_opmode == IEEE80211_M_STA && 726 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 727 rum_amrr_start(sc, ni); 728 729 break; 730 } 731 732 sc->sc_newstate(ic, sc->sc_state, -1); 733 } 734 735 Static int 736 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 737 { 738 struct rum_softc *sc = ic->ic_ifp->if_softc; 739 740 usb_rem_task(sc->sc_udev, &sc->sc_task); 741 callout_stop(&sc->scan_ch); 742 callout_stop(&sc->amrr_ch); 743 744 /* do it in a process context */ 745 sc->sc_state = nstate; 746 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 747 748 return 0; 749 } 750 751 /* quickly determine if a given rate is CCK or OFDM */ 752 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 753 754 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 755 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 756 757 Static void 758 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 759 { 760 struct rum_tx_data *data = priv; 761 struct rum_softc *sc = data->sc; 762 struct ifnet *ifp = &sc->sc_if; 763 int s; 764 765 if (status != USBD_NORMAL_COMPLETION) { 766 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 767 return; 768 769 printf("%s: could not transmit buffer: %s\n", 770 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 771 772 if (status == USBD_STALLED) 773 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 774 775 ifp->if_oerrors++; 776 return; 777 } 778 779 s = splnet(); 780 781 m_freem(data->m); 782 data->m = NULL; 783 ieee80211_free_node(data->ni); 784 data->ni = NULL; 785 786 sc->tx_queued--; 787 ifp->if_opackets++; 788 789 DPRINTFN(10, ("tx done\n")); 790 791 sc->sc_tx_timer = 0; 792 ifp->if_flags &= ~IFF_OACTIVE; 793 rum_start(ifp); 794 795 splx(s); 796 } 797 798 Static void 799 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 800 { 801 struct rum_rx_data *data = priv; 802 struct rum_softc *sc = data->sc; 803 struct ieee80211com *ic = &sc->sc_ic; 804 struct ifnet *ifp = &sc->sc_if; 805 struct rum_rx_desc *desc; 806 struct ieee80211_frame *wh; 807 struct ieee80211_node *ni; 808 struct mbuf *mnew, *m; 809 int s, len; 810 811 if (status != USBD_NORMAL_COMPLETION) { 812 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 813 return; 814 815 if (status == USBD_STALLED) 816 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 817 goto skip; 818 } 819 820 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 821 822 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 823 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 824 len)); 825 ifp->if_ierrors++; 826 goto skip; 827 } 828 829 desc = (struct rum_rx_desc *)data->buf; 830 831 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 832 /* 833 * This should not happen since we did not request to receive 834 * those frames when we filled RT2573_TXRX_CSR0. 835 */ 836 DPRINTFN(5, ("CRC error\n")); 837 ifp->if_ierrors++; 838 goto skip; 839 } 840 841 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 842 if (mnew == NULL) { 843 printf("%s: could not allocate rx mbuf\n", 844 USBDEVNAME(sc->sc_dev)); 845 ifp->if_ierrors++; 846 goto skip; 847 } 848 849 MCLGET(mnew, M_DONTWAIT); 850 if (!(mnew->m_flags & M_EXT)) { 851 printf("%s: could not allocate rx mbuf cluster\n", 852 USBDEVNAME(sc->sc_dev)); 853 m_freem(mnew); 854 ifp->if_ierrors++; 855 goto skip; 856 } 857 858 m = data->m; 859 data->m = mnew; 860 data->buf = mtod(data->m, uint8_t *); 861 862 /* finalize mbuf */ 863 m->m_pkthdr.rcvif = ifp; 864 m->m_data = (caddr_t)(desc + 1); 865 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 866 867 s = splnet(); 868 869 #if NBPFILTER > 0 870 if (sc->sc_drvbpf != NULL) { 871 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 872 873 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 874 tap->wr_rate = rum_rxrate(desc); 875 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 876 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 877 tap->wr_antenna = sc->rx_ant; 878 tap->wr_antsignal = desc->rssi; 879 880 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 881 } 882 #endif 883 884 wh = mtod(m, struct ieee80211_frame *); 885 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 886 887 /* send the frame to the 802.11 layer */ 888 ieee80211_input(ic, m, ni, desc->rssi, 0); 889 890 /* node is no longer needed */ 891 ieee80211_free_node(ni); 892 893 splx(s); 894 895 DPRINTFN(15, ("rx done\n")); 896 897 skip: /* setup a new transfer */ 898 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 899 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 900 usbd_transfer(xfer); 901 } 902 903 /* 904 * This function is only used by the Rx radiotap code. It returns the rate at 905 * which a given frame was received. 906 */ 907 #if NBPFILTER > 0 908 Static uint8_t 909 rum_rxrate(struct rum_rx_desc *desc) 910 { 911 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 912 /* reverse function of rum_plcp_signal */ 913 switch (desc->rate) { 914 case 0xb: return 12; 915 case 0xf: return 18; 916 case 0xa: return 24; 917 case 0xe: return 36; 918 case 0x9: return 48; 919 case 0xd: return 72; 920 case 0x8: return 96; 921 case 0xc: return 108; 922 } 923 } else { 924 if (desc->rate == 10) 925 return 2; 926 if (desc->rate == 20) 927 return 4; 928 if (desc->rate == 55) 929 return 11; 930 if (desc->rate == 110) 931 return 22; 932 } 933 return 2; /* should not get there */ 934 } 935 #endif 936 937 /* 938 * Return the expected ack rate for a frame transmitted at rate `rate'. 939 * XXX: this should depend on the destination node basic rate set. 940 */ 941 Static int 942 rum_ack_rate(struct ieee80211com *ic, int rate) 943 { 944 switch (rate) { 945 /* CCK rates */ 946 case 2: 947 return 2; 948 case 4: 949 case 11: 950 case 22: 951 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 952 953 /* OFDM rates */ 954 case 12: 955 case 18: 956 return 12; 957 case 24: 958 case 36: 959 return 24; 960 case 48: 961 case 72: 962 case 96: 963 case 108: 964 return 48; 965 } 966 967 /* default to 1Mbps */ 968 return 2; 969 } 970 971 /* 972 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 973 * The function automatically determines the operating mode depending on the 974 * given rate. `flags' indicates whether short preamble is in use or not. 975 */ 976 Static uint16_t 977 rum_txtime(int len, int rate, uint32_t flags) 978 { 979 uint16_t txtime; 980 981 if (RUM_RATE_IS_OFDM(rate)) { 982 /* IEEE Std 802.11a-1999, pp. 37 */ 983 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 984 txtime = 16 + 4 + 4 * txtime + 6; 985 } else { 986 /* IEEE Std 802.11b-1999, pp. 28 */ 987 txtime = (16 * len + rate - 1) / rate; 988 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 989 txtime += 72 + 24; 990 else 991 txtime += 144 + 48; 992 } 993 return txtime; 994 } 995 996 Static uint8_t 997 rum_plcp_signal(int rate) 998 { 999 switch (rate) { 1000 /* CCK rates (returned values are device-dependent) */ 1001 case 2: return 0x0; 1002 case 4: return 0x1; 1003 case 11: return 0x2; 1004 case 22: return 0x3; 1005 1006 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1007 case 12: return 0xb; 1008 case 18: return 0xf; 1009 case 24: return 0xa; 1010 case 36: return 0xe; 1011 case 48: return 0x9; 1012 case 72: return 0xd; 1013 case 96: return 0x8; 1014 case 108: return 0xc; 1015 1016 /* unsupported rates (should not get there) */ 1017 default: return 0xff; 1018 } 1019 } 1020 1021 Static void 1022 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1023 uint32_t flags, uint16_t xflags, int len, int rate) 1024 { 1025 struct ieee80211com *ic = &sc->sc_ic; 1026 uint16_t plcp_length; 1027 int remainder; 1028 1029 desc->flags = htole32(flags); 1030 desc->flags |= htole32(RT2573_TX_VALID); 1031 desc->flags |= htole32(len << 16); 1032 1033 desc->xflags = htole16(xflags); 1034 1035 desc->wme = htole16( 1036 RT2573_QID(0) | 1037 RT2573_AIFSN(2) | 1038 RT2573_LOGCWMIN(4) | 1039 RT2573_LOGCWMAX(10)); 1040 1041 /* setup PLCP fields */ 1042 desc->plcp_signal = rum_plcp_signal(rate); 1043 desc->plcp_service = 4; 1044 1045 len += IEEE80211_CRC_LEN; 1046 if (RUM_RATE_IS_OFDM(rate)) { 1047 desc->flags |= htole32(RT2573_TX_OFDM); 1048 1049 plcp_length = len & 0xfff; 1050 desc->plcp_length_hi = plcp_length >> 6; 1051 desc->plcp_length_lo = plcp_length & 0x3f; 1052 } else { 1053 plcp_length = (16 * len + rate - 1) / rate; 1054 if (rate == 22) { 1055 remainder = (16 * len) % 22; 1056 if (remainder != 0 && remainder < 7) 1057 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1058 } 1059 desc->plcp_length_hi = plcp_length >> 8; 1060 desc->plcp_length_lo = plcp_length & 0xff; 1061 1062 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1063 desc->plcp_signal |= 0x08; 1064 } 1065 } 1066 1067 #define RUM_TX_TIMEOUT 5000 1068 1069 Static int 1070 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1071 { 1072 struct ieee80211com *ic = &sc->sc_ic; 1073 struct rum_tx_desc *desc; 1074 struct rum_tx_data *data; 1075 struct ieee80211_frame *wh; 1076 uint32_t flags = 0; 1077 uint16_t dur; 1078 usbd_status error; 1079 int xferlen, rate; 1080 1081 data = &sc->tx_data[0]; 1082 desc = (struct rum_tx_desc *)data->buf; 1083 1084 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1085 1086 data->m = m0; 1087 data->ni = ni; 1088 1089 wh = mtod(m0, struct ieee80211_frame *); 1090 1091 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1092 flags |= RT2573_TX_ACK; 1093 1094 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1095 ic->ic_flags) + sc->sifs; 1096 *(uint16_t *)wh->i_dur = htole16(dur); 1097 1098 /* tell hardware to set timestamp in probe responses */ 1099 if ((wh->i_fc[0] & 1100 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1101 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1102 flags |= RT2573_TX_TIMESTAMP; 1103 } 1104 1105 #if NBPFILTER > 0 1106 if (sc->sc_drvbpf != NULL) { 1107 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1108 1109 tap->wt_flags = 0; 1110 tap->wt_rate = rate; 1111 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1112 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1113 tap->wt_antenna = sc->tx_ant; 1114 1115 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1116 } 1117 #endif 1118 1119 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1120 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1121 1122 /* align end on a 4-bytes boundary */ 1123 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1124 1125 /* 1126 * No space left in the last URB to store the extra 4 bytes, force 1127 * sending of another URB. 1128 */ 1129 if ((xferlen % 64) == 0) 1130 xferlen += 4; 1131 1132 DPRINTFN(10, ("sending msg frame len=%lu rate=%u xfer len=%u\n", 1133 (long unsigned int)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1134 rate, xferlen)); 1135 1136 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1137 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1138 1139 error = usbd_transfer(data->xfer); 1140 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1141 m_freem(m0); 1142 return error; 1143 } 1144 1145 sc->tx_queued++; 1146 1147 return 0; 1148 } 1149 1150 Static int 1151 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1152 { 1153 struct ieee80211com *ic = &sc->sc_ic; 1154 struct rum_tx_desc *desc; 1155 struct rum_tx_data *data; 1156 struct ieee80211_frame *wh; 1157 struct ieee80211_key *k; 1158 uint32_t flags = 0; 1159 uint16_t dur; 1160 usbd_status error; 1161 int xferlen, rate; 1162 1163 wh = mtod(m0, struct ieee80211_frame *); 1164 1165 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1166 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1167 else 1168 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1169 rate &= IEEE80211_RATE_VAL; 1170 1171 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1172 k = ieee80211_crypto_encap(ic, ni, m0); 1173 if (k == NULL) { 1174 m_freem(m0); 1175 return ENOBUFS; 1176 } 1177 1178 /* packet header may have moved, reset our local pointer */ 1179 wh = mtod(m0, struct ieee80211_frame *); 1180 } 1181 1182 data = &sc->tx_data[0]; 1183 desc = (struct rum_tx_desc *)data->buf; 1184 1185 data->m = m0; 1186 data->ni = ni; 1187 1188 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1189 flags |= RT2573_TX_ACK; 1190 1191 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1192 ic->ic_flags) + sc->sifs; 1193 *(uint16_t *)wh->i_dur = htole16(dur); 1194 } 1195 1196 #if NBPFILTER > 0 1197 if (sc->sc_drvbpf != NULL) { 1198 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1199 1200 tap->wt_flags = 0; 1201 tap->wt_rate = rate; 1202 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1203 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1204 tap->wt_antenna = sc->tx_ant; 1205 1206 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1207 } 1208 #endif 1209 1210 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1211 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1212 1213 /* align end on a 4-bytes boundary */ 1214 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1215 1216 /* 1217 * No space left in the last URB to store the extra 4 bytes, force 1218 * sending of another URB. 1219 */ 1220 if ((xferlen % 64) == 0) 1221 xferlen += 4; 1222 1223 DPRINTFN(10, ("sending data frame len=%lu rate=%u xfer len=%u\n", 1224 (long unsigned int)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1225 rate, xferlen)); 1226 1227 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1228 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1229 1230 error = usbd_transfer(data->xfer); 1231 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1232 m_freem(m0); 1233 return error; 1234 } 1235 1236 sc->tx_queued++; 1237 1238 return 0; 1239 } 1240 1241 Static void 1242 rum_start(struct ifnet *ifp) 1243 { 1244 struct rum_softc *sc = ifp->if_softc; 1245 struct ieee80211com *ic = &sc->sc_ic; 1246 struct ether_header *eh; 1247 struct ieee80211_node *ni; 1248 struct mbuf *m0; 1249 1250 for (;;) { 1251 IF_POLL(&ic->ic_mgtq, m0); 1252 if (m0 != NULL) { 1253 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1254 ifp->if_flags |= IFF_OACTIVE; 1255 break; 1256 } 1257 IF_DEQUEUE(&ic->ic_mgtq, m0); 1258 1259 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1260 m0->m_pkthdr.rcvif = NULL; 1261 #if NBPFILTER > 0 1262 if (ic->ic_rawbpf != NULL) 1263 bpf_mtap(ic->ic_rawbpf, m0); 1264 #endif 1265 if (rum_tx_mgt(sc, m0, ni) != 0) 1266 break; 1267 1268 } else { 1269 if (ic->ic_state != IEEE80211_S_RUN) 1270 break; 1271 IFQ_POLL(&ifp->if_snd, m0); 1272 if (m0 == NULL) 1273 break; 1274 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1275 ifp->if_flags |= IFF_OACTIVE; 1276 break; 1277 } 1278 IFQ_DEQUEUE(&ifp->if_snd, m0); 1279 if (m0->m_len < sizeof(struct ether_header) && 1280 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1281 continue; 1282 1283 eh = mtod(m0, struct ether_header *); 1284 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1285 if (ni == NULL) { 1286 m_freem(m0); 1287 continue; 1288 } 1289 #if NBPFILTER > 0 1290 if (ifp->if_bpf != NULL) 1291 bpf_mtap(ifp->if_bpf, m0); 1292 #endif 1293 m0 = ieee80211_encap(ic, m0, ni); 1294 if (m0 == NULL) { 1295 ieee80211_free_node(ni); 1296 continue; 1297 } 1298 #if NBPFILTER > 0 1299 if (ic->ic_rawbpf != NULL) 1300 bpf_mtap(ic->ic_rawbpf, m0); 1301 #endif 1302 if (rum_tx_data(sc, m0, ni) != 0) { 1303 ieee80211_free_node(ni); 1304 ifp->if_oerrors++; 1305 break; 1306 } 1307 } 1308 1309 sc->sc_tx_timer = 5; 1310 ifp->if_timer = 1; 1311 } 1312 } 1313 1314 Static void 1315 rum_watchdog(struct ifnet *ifp) 1316 { 1317 struct rum_softc *sc = ifp->if_softc; 1318 struct ieee80211com *ic = &sc->sc_ic; 1319 1320 ifp->if_timer = 0; 1321 1322 if (sc->sc_tx_timer > 0) { 1323 if (--sc->sc_tx_timer == 0) { 1324 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1325 /*rum_init(ifp); XXX needs a process context! */ 1326 ifp->if_oerrors++; 1327 return; 1328 } 1329 ifp->if_timer = 1; 1330 } 1331 1332 ieee80211_watchdog(ic); 1333 } 1334 1335 Static int 1336 rum_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1337 { 1338 struct rum_softc *sc = ifp->if_softc; 1339 struct ieee80211com *ic = &sc->sc_ic; 1340 int s, error = 0; 1341 1342 s = splnet(); 1343 1344 switch (cmd) { 1345 case SIOCSIFFLAGS: 1346 if (ifp->if_flags & IFF_UP) { 1347 if (ifp->if_flags & IFF_RUNNING) 1348 rum_update_promisc(sc); 1349 else 1350 rum_init(ifp); 1351 } else { 1352 if (ifp->if_flags & IFF_RUNNING) 1353 rum_stop(ifp, 1); 1354 } 1355 break; 1356 1357 default: 1358 error = ieee80211_ioctl(ic, cmd, data); 1359 } 1360 1361 if (error == ENETRESET) { 1362 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1363 (IFF_UP | IFF_RUNNING)) 1364 rum_init(ifp); 1365 error = 0; 1366 } 1367 1368 splx(s); 1369 1370 return error; 1371 } 1372 1373 Static void 1374 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1375 { 1376 usb_device_request_t req; 1377 usbd_status error; 1378 1379 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1380 req.bRequest = RT2573_READ_EEPROM; 1381 USETW(req.wValue, 0); 1382 USETW(req.wIndex, addr); 1383 USETW(req.wLength, len); 1384 1385 error = usbd_do_request(sc->sc_udev, &req, buf); 1386 if (error != 0) { 1387 printf("%s: could not read EEPROM: %s\n", 1388 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1389 } 1390 } 1391 1392 Static uint32_t 1393 rum_read(struct rum_softc *sc, uint16_t reg) 1394 { 1395 uint32_t val; 1396 1397 rum_read_multi(sc, reg, &val, sizeof val); 1398 1399 return le32toh(val); 1400 } 1401 1402 Static void 1403 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1404 { 1405 usb_device_request_t req; 1406 usbd_status error; 1407 1408 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1409 req.bRequest = RT2573_READ_MULTI_MAC; 1410 USETW(req.wValue, 0); 1411 USETW(req.wIndex, reg); 1412 USETW(req.wLength, len); 1413 1414 error = usbd_do_request(sc->sc_udev, &req, buf); 1415 if (error != 0) { 1416 printf("%s: could not multi read MAC register: %s\n", 1417 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1418 } 1419 } 1420 1421 Static void 1422 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1423 { 1424 uint32_t tmp = htole32(val); 1425 1426 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1427 } 1428 1429 Static void 1430 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1431 { 1432 usb_device_request_t req; 1433 usbd_status error; 1434 1435 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1436 req.bRequest = RT2573_WRITE_MULTI_MAC; 1437 USETW(req.wValue, 0); 1438 USETW(req.wIndex, reg); 1439 USETW(req.wLength, len); 1440 1441 error = usbd_do_request(sc->sc_udev, &req, buf); 1442 if (error != 0) { 1443 printf("%s: could not multi write MAC register: %s\n", 1444 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1445 } 1446 } 1447 1448 Static void 1449 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1450 { 1451 uint32_t tmp; 1452 int ntries; 1453 1454 for (ntries = 0; ntries < 5; ntries++) { 1455 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1456 break; 1457 } 1458 if (ntries == 5) { 1459 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1460 return; 1461 } 1462 1463 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1464 rum_write(sc, RT2573_PHY_CSR3, tmp); 1465 } 1466 1467 Static uint8_t 1468 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1469 { 1470 uint32_t val; 1471 int ntries; 1472 1473 for (ntries = 0; ntries < 5; ntries++) { 1474 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1475 break; 1476 } 1477 if (ntries == 5) { 1478 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1479 return 0; 1480 } 1481 1482 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1483 rum_write(sc, RT2573_PHY_CSR3, val); 1484 1485 for (ntries = 0; ntries < 100; ntries++) { 1486 val = rum_read(sc, RT2573_PHY_CSR3); 1487 if (!(val & RT2573_BBP_BUSY)) 1488 return val & 0xff; 1489 DELAY(1); 1490 } 1491 1492 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1493 return 0; 1494 } 1495 1496 Static void 1497 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1498 { 1499 uint32_t tmp; 1500 int ntries; 1501 1502 for (ntries = 0; ntries < 5; ntries++) { 1503 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1504 break; 1505 } 1506 if (ntries == 5) { 1507 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1508 return; 1509 } 1510 1511 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1512 (reg & 3); 1513 rum_write(sc, RT2573_PHY_CSR4, tmp); 1514 1515 /* remember last written value in sc */ 1516 sc->rf_regs[reg] = val; 1517 1518 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1519 } 1520 1521 Static void 1522 rum_select_antenna(struct rum_softc *sc) 1523 { 1524 uint8_t bbp4, bbp77; 1525 uint32_t tmp; 1526 1527 bbp4 = rum_bbp_read(sc, 4); 1528 bbp77 = rum_bbp_read(sc, 77); 1529 1530 /* TBD */ 1531 1532 /* make sure Rx is disabled before switching antenna */ 1533 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1534 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1535 1536 rum_bbp_write(sc, 4, bbp4); 1537 rum_bbp_write(sc, 77, bbp77); 1538 1539 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1540 } 1541 1542 /* 1543 * Enable multi-rate retries for frames sent at OFDM rates. 1544 * In 802.11b/g mode, allow fallback to CCK rates. 1545 */ 1546 Static void 1547 rum_enable_mrr(struct rum_softc *sc) 1548 { 1549 struct ieee80211com *ic = &sc->sc_ic; 1550 uint32_t tmp; 1551 1552 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1553 1554 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1555 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1556 tmp |= RT2573_MRR_CCK_FALLBACK; 1557 tmp |= RT2573_MRR_ENABLED; 1558 1559 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1560 } 1561 1562 Static void 1563 rum_set_txpreamble(struct rum_softc *sc) 1564 { 1565 uint32_t tmp; 1566 1567 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1568 1569 tmp &= ~RT2573_SHORT_PREAMBLE; 1570 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1571 tmp |= RT2573_SHORT_PREAMBLE; 1572 1573 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1574 } 1575 1576 Static void 1577 rum_set_basicrates(struct rum_softc *sc) 1578 { 1579 struct ieee80211com *ic = &sc->sc_ic; 1580 1581 /* update basic rate set */ 1582 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1583 /* 11b basic rates: 1, 2Mbps */ 1584 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1585 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1586 /* 11a basic rates: 6, 12, 24Mbps */ 1587 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1588 } else { 1589 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1590 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1591 } 1592 } 1593 1594 /* 1595 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1596 * driver. 1597 */ 1598 Static void 1599 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1600 { 1601 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1602 uint32_t tmp; 1603 1604 /* update all BBP registers that depend on the band */ 1605 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1606 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1607 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1608 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1609 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1610 } 1611 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1612 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1613 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1614 } 1615 1616 sc->bbp17 = bbp17; 1617 rum_bbp_write(sc, 17, bbp17); 1618 rum_bbp_write(sc, 96, bbp96); 1619 rum_bbp_write(sc, 104, bbp104); 1620 1621 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1622 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1623 rum_bbp_write(sc, 75, 0x80); 1624 rum_bbp_write(sc, 86, 0x80); 1625 rum_bbp_write(sc, 88, 0x80); 1626 } 1627 1628 rum_bbp_write(sc, 35, bbp35); 1629 rum_bbp_write(sc, 97, bbp97); 1630 rum_bbp_write(sc, 98, bbp98); 1631 1632 tmp = rum_read(sc, RT2573_PHY_CSR0); 1633 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1634 if (IEEE80211_IS_CHAN_2GHZ(c)) 1635 tmp |= RT2573_PA_PE_2GHZ; 1636 else 1637 tmp |= RT2573_PA_PE_5GHZ; 1638 rum_write(sc, RT2573_PHY_CSR0, tmp); 1639 1640 /* 802.11a uses a 16 microseconds short interframe space */ 1641 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1642 } 1643 1644 Static void 1645 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1646 { 1647 struct ieee80211com *ic = &sc->sc_ic; 1648 const struct rfprog *rfprog; 1649 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1650 int8_t power; 1651 u_int i, chan; 1652 1653 chan = ieee80211_chan2ieee(ic, c); 1654 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1655 return; 1656 1657 /* select the appropriate RF settings based on what EEPROM says */ 1658 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1659 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1660 1661 /* find the settings for this channel (we know it exists) */ 1662 for (i = 0; rfprog[i].chan != chan; i++); 1663 1664 power = sc->txpow[i]; 1665 if (power < 0) { 1666 bbp94 += power; 1667 power = 0; 1668 } else if (power > 31) { 1669 bbp94 += power - 31; 1670 power = 31; 1671 } 1672 1673 /* 1674 * If we are switching from the 2GHz band to the 5GHz band or 1675 * vice-versa, BBP registers need to be reprogrammed. 1676 */ 1677 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1678 rum_select_band(sc, c); 1679 rum_select_antenna(sc); 1680 } 1681 ic->ic_curchan = c; 1682 1683 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1684 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1685 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1686 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1687 1688 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1689 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1690 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1691 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1692 1693 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1694 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1695 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1696 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1697 1698 DELAY(10); 1699 1700 /* enable smart mode for MIMO-capable RFs */ 1701 bbp3 = rum_bbp_read(sc, 3); 1702 1703 bbp3 &= ~RT2573_SMART_MODE; 1704 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1705 bbp3 |= RT2573_SMART_MODE; 1706 1707 rum_bbp_write(sc, 3, bbp3); 1708 1709 if (bbp94 != RT2573_BBPR94_DEFAULT) 1710 rum_bbp_write(sc, 94, bbp94); 1711 } 1712 1713 /* 1714 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1715 * and HostAP operating modes. 1716 */ 1717 Static void 1718 rum_enable_tsf_sync(struct rum_softc *sc) 1719 { 1720 struct ieee80211com *ic = &sc->sc_ic; 1721 uint32_t tmp; 1722 1723 if (ic->ic_opmode != IEEE80211_M_STA) { 1724 /* 1725 * Change default 16ms TBTT adjustment to 8ms. 1726 * Must be done before enabling beacon generation. 1727 */ 1728 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1729 } 1730 1731 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1732 1733 /* set beacon interval (in 1/16ms unit) */ 1734 tmp |= ic->ic_bss->ni_intval * 16; 1735 1736 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1737 if (ic->ic_opmode == IEEE80211_M_STA) 1738 tmp |= RT2573_TSF_MODE(1); 1739 else 1740 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1741 1742 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1743 } 1744 1745 Static void 1746 rum_update_slot(struct rum_softc *sc) 1747 { 1748 struct ieee80211com *ic = &sc->sc_ic; 1749 uint8_t slottime; 1750 uint32_t tmp; 1751 1752 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1753 1754 tmp = rum_read(sc, RT2573_MAC_CSR9); 1755 tmp = (tmp & ~0xff) | slottime; 1756 rum_write(sc, RT2573_MAC_CSR9, tmp); 1757 1758 DPRINTF(("setting slot time to %uus\n", slottime)); 1759 } 1760 1761 Static void 1762 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1763 { 1764 uint32_t tmp; 1765 1766 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1767 rum_write(sc, RT2573_MAC_CSR4, tmp); 1768 1769 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1770 rum_write(sc, RT2573_MAC_CSR5, tmp); 1771 } 1772 1773 Static void 1774 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1775 { 1776 uint32_t tmp; 1777 1778 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1779 rum_write(sc, RT2573_MAC_CSR2, tmp); 1780 1781 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1782 rum_write(sc, RT2573_MAC_CSR3, tmp); 1783 } 1784 1785 Static void 1786 rum_update_promisc(struct rum_softc *sc) 1787 { 1788 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1789 uint32_t tmp; 1790 1791 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1792 1793 tmp &= ~RT2573_DROP_NOT_TO_ME; 1794 if (!(ifp->if_flags & IFF_PROMISC)) 1795 tmp |= RT2573_DROP_NOT_TO_ME; 1796 1797 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1798 1799 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1800 "entering" : "leaving")); 1801 } 1802 1803 Static const char * 1804 rum_get_rf(int rev) 1805 { 1806 switch (rev) { 1807 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1808 case RT2573_RF_2528: return "RT2528"; 1809 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1810 case RT2573_RF_5226: return "RT5226"; 1811 default: return "unknown"; 1812 } 1813 } 1814 1815 Static void 1816 rum_read_eeprom(struct rum_softc *sc) 1817 { 1818 struct ieee80211com *ic = &sc->sc_ic; 1819 uint16_t val; 1820 #ifdef RUM_DEBUG 1821 int i; 1822 #endif 1823 1824 /* read MAC/BBP type */ 1825 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1826 sc->macbbp_rev = le16toh(val); 1827 1828 /* read MAC address */ 1829 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1830 1831 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1832 val = le16toh(val); 1833 sc->rf_rev = (val >> 11) & 0x1f; 1834 sc->hw_radio = (val >> 10) & 0x1; 1835 sc->rx_ant = (val >> 4) & 0x3; 1836 sc->tx_ant = (val >> 2) & 0x3; 1837 sc->nb_ant = val & 0x3; 1838 1839 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1840 1841 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1842 val = le16toh(val); 1843 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1844 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1845 1846 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1847 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1848 1849 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1850 val = le16toh(val); 1851 if ((val & 0xff) != 0xff) 1852 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1853 1854 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1855 val = le16toh(val); 1856 if ((val & 0xff) != 0xff) 1857 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1858 1859 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1860 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1861 1862 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1863 val = le16toh(val); 1864 if ((val & 0xff) != 0xff) 1865 sc->rffreq = val & 0xff; 1866 1867 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1868 1869 /* read Tx power for all a/b/g channels */ 1870 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1871 /* XXX default Tx power for 802.11a channels */ 1872 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1873 #ifdef RUM_DEBUG 1874 for (i = 0; i < 14; i++) 1875 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1876 #endif 1877 1878 /* read default values for BBP registers */ 1879 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1880 #ifdef RUM_DEBUG 1881 for (i = 0; i < 14; i++) { 1882 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1883 continue; 1884 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1885 sc->bbp_prom[i].val)); 1886 } 1887 #endif 1888 } 1889 1890 Static int 1891 rum_bbp_init(struct rum_softc *sc) 1892 { 1893 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1894 int i, ntries; 1895 uint8_t val; 1896 1897 /* wait for BBP to be ready */ 1898 for (ntries = 0; ntries < 100; ntries++) { 1899 val = rum_bbp_read(sc, 0); 1900 if (val != 0 && val != 0xff) 1901 break; 1902 DELAY(1000); 1903 } 1904 if (ntries == 100) { 1905 printf("%s: timeout waiting for BBP\n", 1906 USBDEVNAME(sc->sc_dev)); 1907 return EIO; 1908 } 1909 1910 /* initialize BBP registers to default values */ 1911 for (i = 0; i < N(rum_def_bbp); i++) 1912 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1913 1914 /* write vendor-specific BBP values (from EEPROM) */ 1915 for (i = 0; i < 16; i++) { 1916 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1917 continue; 1918 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1919 } 1920 1921 return 0; 1922 #undef N 1923 } 1924 1925 Static int 1926 rum_init(struct ifnet *ifp) 1927 { 1928 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1929 struct rum_softc *sc = ifp->if_softc; 1930 struct ieee80211com *ic = &sc->sc_ic; 1931 struct rum_rx_data *data; 1932 uint32_t tmp; 1933 usbd_status error = 0; 1934 int i, ntries; 1935 1936 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1937 if (rum_attachhook(sc)) 1938 goto fail; 1939 } 1940 1941 rum_stop(ifp, 0); 1942 1943 /* initialize MAC registers to default values */ 1944 for (i = 0; i < N(rum_def_mac); i++) 1945 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1946 1947 /* set host ready */ 1948 rum_write(sc, RT2573_MAC_CSR1, 3); 1949 rum_write(sc, RT2573_MAC_CSR1, 0); 1950 1951 /* wait for BBP/RF to wakeup */ 1952 for (ntries = 0; ntries < 1000; ntries++) { 1953 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1954 break; 1955 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1956 DELAY(1000); 1957 } 1958 if (ntries == 1000) { 1959 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1960 USBDEVNAME(sc->sc_dev)); 1961 goto fail; 1962 } 1963 1964 if ((error = rum_bbp_init(sc)) != 0) 1965 goto fail; 1966 1967 /* select default channel */ 1968 rum_select_band(sc, ic->ic_curchan); 1969 rum_select_antenna(sc); 1970 rum_set_chan(sc, ic->ic_curchan); 1971 1972 /* clear STA registers */ 1973 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1974 1975 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1976 rum_set_macaddr(sc, ic->ic_myaddr); 1977 1978 /* initialize ASIC */ 1979 rum_write(sc, RT2573_MAC_CSR1, 4); 1980 1981 /* 1982 * Allocate xfer for AMRR statistics requests. 1983 */ 1984 sc->amrr_xfer = usbd_alloc_default_xfer(sc->sc_udev); 1985 if (sc->amrr_xfer == NULL) { 1986 printf("%s: could not allocate AMRR xfer\n", 1987 USBDEVNAME(sc->sc_dev)); 1988 goto fail; 1989 } 1990 1991 /* 1992 * Open Tx and Rx USB bulk pipes. 1993 */ 1994 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1995 &sc->sc_tx_pipeh); 1996 if (error != 0) { 1997 printf("%s: could not open Tx pipe: %s\n", 1998 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1999 goto fail; 2000 } 2001 2002 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2003 &sc->sc_rx_pipeh); 2004 if (error != 0) { 2005 printf("%s: could not open Rx pipe: %s\n", 2006 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2007 goto fail; 2008 } 2009 2010 /* 2011 * Allocate Tx and Rx xfer queues. 2012 */ 2013 error = rum_alloc_tx_list(sc); 2014 if (error != 0) { 2015 printf("%s: could not allocate Tx list\n", 2016 USBDEVNAME(sc->sc_dev)); 2017 goto fail; 2018 } 2019 2020 error = rum_alloc_rx_list(sc); 2021 if (error != 0) { 2022 printf("%s: could not allocate Rx list\n", 2023 USBDEVNAME(sc->sc_dev)); 2024 goto fail; 2025 } 2026 2027 /* 2028 * Start up the receive pipe. 2029 */ 2030 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 2031 data = &sc->rx_data[i]; 2032 2033 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2034 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2035 usbd_transfer(data->xfer); 2036 } 2037 2038 /* update Rx filter */ 2039 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2040 2041 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2042 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2043 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2044 RT2573_DROP_ACKCTS; 2045 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2046 tmp |= RT2573_DROP_TODS; 2047 if (!(ifp->if_flags & IFF_PROMISC)) 2048 tmp |= RT2573_DROP_NOT_TO_ME; 2049 } 2050 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2051 2052 ifp->if_flags &= ~IFF_OACTIVE; 2053 ifp->if_flags |= IFF_RUNNING; 2054 2055 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2056 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2057 else 2058 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2059 2060 return 0; 2061 2062 fail: rum_stop(ifp, 1); 2063 return error; 2064 #undef N 2065 } 2066 2067 Static void 2068 rum_stop(struct ifnet *ifp, int disable) 2069 { 2070 struct rum_softc *sc = ifp->if_softc; 2071 struct ieee80211com *ic = &sc->sc_ic; 2072 uint32_t tmp; 2073 2074 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2075 2076 sc->sc_tx_timer = 0; 2077 ifp->if_timer = 0; 2078 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2079 2080 /* disable Rx */ 2081 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2082 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2083 2084 /* reset ASIC */ 2085 rum_write(sc, RT2573_MAC_CSR1, 3); 2086 rum_write(sc, RT2573_MAC_CSR1, 0); 2087 2088 if (sc->sc_rx_pipeh != NULL) { 2089 usbd_abort_pipe(sc->sc_rx_pipeh); 2090 usbd_close_pipe(sc->sc_rx_pipeh); 2091 sc->sc_rx_pipeh = NULL; 2092 } 2093 2094 if (sc->sc_tx_pipeh != NULL) { 2095 usbd_abort_pipe(sc->sc_tx_pipeh); 2096 usbd_close_pipe(sc->sc_tx_pipeh); 2097 sc->sc_tx_pipeh = NULL; 2098 } 2099 2100 rum_free_rx_list(sc); 2101 rum_free_tx_list(sc); 2102 } 2103 2104 Static int 2105 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2106 { 2107 usb_device_request_t req; 2108 uint16_t reg = RT2573_MCU_CODE_BASE; 2109 usbd_status error; 2110 2111 /* copy firmware image into NIC */ 2112 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2113 rum_write(sc, reg, UGETDW(ucode)); 2114 2115 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2116 req.bRequest = RT2573_MCU_CNTL; 2117 USETW(req.wValue, RT2573_MCU_RUN); 2118 USETW(req.wIndex, 0); 2119 USETW(req.wLength, 0); 2120 2121 error = usbd_do_request(sc->sc_udev, &req, NULL); 2122 if (error != 0) { 2123 printf("%s: could not run firmware: %s\n", 2124 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2125 } 2126 return error; 2127 } 2128 2129 Static int 2130 rum_prepare_beacon(struct rum_softc *sc) 2131 { 2132 struct ieee80211com *ic = &sc->sc_ic; 2133 struct rum_tx_desc desc; 2134 struct mbuf *m0; 2135 int rate; 2136 2137 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2138 if (m0 == NULL) { 2139 printf("%s: could not allocate beacon frame\n", 2140 sc->sc_dev.dv_xname); 2141 return ENOBUFS; 2142 } 2143 2144 /* send beacons at the lowest available rate */ 2145 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2146 2147 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2148 m0->m_pkthdr.len, rate); 2149 2150 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2151 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2152 2153 /* copy beacon header and payload into NIC memory */ 2154 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2155 m0->m_pkthdr.len); 2156 2157 m_freem(m0); 2158 2159 return 0; 2160 } 2161 2162 Static void 2163 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2164 { 2165 int i; 2166 2167 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2168 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2169 2170 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2171 2172 /* set rate to some reasonable initial value */ 2173 for (i = ni->ni_rates.rs_nrates - 1; 2174 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2175 i--); 2176 ni->ni_txrate = i; 2177 2178 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2179 } 2180 2181 Static void 2182 rum_amrr_timeout(void *arg) 2183 { 2184 struct rum_softc *sc = arg; 2185 usb_device_request_t req; 2186 int s; 2187 2188 s = splusb(); 2189 2190 /* 2191 * Asynchronously read statistic registers (cleared by read). 2192 */ 2193 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2194 req.bRequest = RT2573_READ_MULTI_MAC; 2195 USETW(req.wValue, 0); 2196 USETW(req.wIndex, RT2573_STA_CSR0); 2197 USETW(req.wLength, sizeof sc->sta); 2198 2199 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2200 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2201 rum_amrr_update); 2202 (void)usbd_transfer(sc->amrr_xfer); 2203 2204 splx(s); 2205 } 2206 2207 Static void 2208 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2209 usbd_status status) 2210 { 2211 struct rum_softc *sc = (struct rum_softc *)priv; 2212 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2213 2214 if (status != USBD_NORMAL_COMPLETION) { 2215 printf("%s: could not retrieve Tx statistics - cancelling " 2216 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2217 return; 2218 } 2219 2220 /* count TX retry-fail as Tx errors */ 2221 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2222 2223 sc->amn.amn_retrycnt = 2224 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2225 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2226 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2227 2228 sc->amn.amn_txcnt = 2229 sc->amn.amn_retrycnt + 2230 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2231 2232 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2233 2234 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2235 } 2236 2237 int 2238 rum_activate(device_ptr_t self, enum devact act) 2239 { 2240 switch (act) { 2241 case DVACT_ACTIVATE: 2242 return EOPNOTSUPP; 2243 2244 case DVACT_DEACTIVATE: 2245 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2246 break; 2247 } 2248 2249 return 0; 2250 } 2251
Indexes created Wed Oct 01 19:09:53 GMT 2025