if_rum.c revision 1.4
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.4 2007/02/06 14:30:09 elad 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 1.4 2007/02/06 14:30:09 elad 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 for (ntries = 0; ntries < 1000; ntries++) { 351 if ((tmp = rum_read(sc, RT2573_MAC_CSR0)) != 0) 352 break; 353 DELAY(1000); 354 } 355 if (ntries == 1000) { 356 printf("%s: timeout waiting for chip to settle\n", 357 USBDEVNAME(sc->sc_dev)); 358 USB_ATTACH_ERROR_RETURN; 359 } 360 361 /* retrieve MAC address and various other things from EEPROM */ 362 rum_read_eeprom(sc); 363 364 printf("%s: MAC/BBP RT%04x (rev 0x%05x), RF %s, address %s\n", 365 USBDEVNAME(sc->sc_dev), sc->macbbp_rev, tmp, 366 rum_get_rf(sc->rf_rev), ether_sprintf(ic->ic_myaddr)); 367 368 ic->ic_ifp = ifp; 369 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 370 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 371 ic->ic_state = IEEE80211_S_INIT; 372 373 /* set device capabilities */ 374 ic->ic_caps = 375 IEEE80211_C_IBSS | /* IBSS mode supported */ 376 IEEE80211_C_MONITOR | /* monitor mode supported */ 377 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 378 IEEE80211_C_TXPMGT | /* tx power management */ 379 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 380 IEEE80211_C_SHSLOT | /* short slot time supported */ 381 IEEE80211_C_WPA; /* 802.11i */ 382 383 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_5226) { 384 /* set supported .11a rates */ 385 ic->ic_sup_rates[IEEE80211_MODE_11A] = rum_rateset_11a; 386 387 /* set supported .11a channels */ 388 for (i = 34; i <= 46; i += 4) { 389 ic->ic_channels[i].ic_freq = 390 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 391 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 392 } 393 for (i = 36; i <= 64; i += 4) { 394 ic->ic_channels[i].ic_freq = 395 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 396 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 397 } 398 for (i = 100; i <= 140; i += 4) { 399 ic->ic_channels[i].ic_freq = 400 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 401 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 402 } 403 for (i = 149; i <= 165; i += 4) { 404 ic->ic_channels[i].ic_freq = 405 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 406 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 407 } 408 } 409 410 /* set supported .11b and .11g rates */ 411 ic->ic_sup_rates[IEEE80211_MODE_11B] = rum_rateset_11b; 412 ic->ic_sup_rates[IEEE80211_MODE_11G] = rum_rateset_11g; 413 414 /* set supported .11b and .11g channels (1 through 14) */ 415 for (i = 1; i <= 14; i++) { 416 ic->ic_channels[i].ic_freq = 417 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 418 ic->ic_channels[i].ic_flags = 419 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 420 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 421 } 422 423 ifp->if_softc = sc; 424 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 425 ifp->if_init = rum_init; 426 ifp->if_ioctl = rum_ioctl; 427 ifp->if_start = rum_start; 428 ifp->if_watchdog = rum_watchdog; 429 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 430 IFQ_SET_READY(&ifp->if_snd); 431 memcpy(ifp->if_xname, USBDEVNAME(sc->sc_dev), IFNAMSIZ); 432 433 if_attach(ifp); 434 ieee80211_ifattach(ic); 435 436 /* override state transition machine */ 437 sc->sc_newstate = ic->ic_newstate; 438 ic->ic_newstate = rum_newstate; 439 ieee80211_media_init(ic, rum_media_change, ieee80211_media_status); 440 441 #if NBPFILTER > 0 442 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 443 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN, &sc->sc_drvbpf); 444 445 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 446 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 447 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2573_RX_RADIOTAP_PRESENT); 448 449 sc->sc_txtap_len = sizeof sc->sc_txtapu; 450 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 451 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2573_TX_RADIOTAP_PRESENT); 452 #endif 453 454 ieee80211_announce(ic); 455 456 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 457 USBDEV(sc->sc_dev)); 458 459 USB_ATTACH_SUCCESS_RETURN; 460 } 461 462 USB_DETACH(rum) 463 { 464 USB_DETACH_START(rum, sc); 465 struct ieee80211com *ic = &sc->sc_ic; 466 struct ifnet *ifp = &sc->sc_if; 467 int s; 468 469 s = splusb(); 470 471 rum_stop(ifp, 1); 472 usb_rem_task(sc->sc_udev, &sc->sc_task); 473 callout_stop(&sc->scan_ch); 474 callout_stop(&sc->amrr_ch); 475 476 if (sc->amrr_xfer != NULL) { 477 usbd_free_xfer(sc->amrr_xfer); 478 sc->amrr_xfer = NULL; 479 } 480 481 if (sc->sc_rx_pipeh != NULL) { 482 usbd_abort_pipe(sc->sc_rx_pipeh); 483 usbd_close_pipe(sc->sc_rx_pipeh); 484 } 485 486 if (sc->sc_tx_pipeh != NULL) { 487 usbd_abort_pipe(sc->sc_tx_pipeh); 488 usbd_close_pipe(sc->sc_tx_pipeh); 489 } 490 491 rum_free_rx_list(sc); 492 rum_free_tx_list(sc); 493 494 #if NBPFILTER > 0 495 bpfdetach(ifp); 496 #endif 497 ieee80211_ifdetach(ic); /* free all nodes */ 498 if_detach(ifp); 499 500 splx(s); 501 502 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 503 USBDEV(sc->sc_dev)); 504 505 return 0; 506 } 507 508 Static int 509 rum_alloc_tx_list(struct rum_softc *sc) 510 { 511 struct rum_tx_data *data; 512 int i, error; 513 514 sc->tx_queued = 0; 515 516 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 517 data = &sc->tx_data[i]; 518 519 data->sc = sc; 520 521 data->xfer = usbd_alloc_xfer(sc->sc_udev); 522 if (data->xfer == NULL) { 523 printf("%s: could not allocate tx xfer\n", 524 USBDEVNAME(sc->sc_dev)); 525 error = ENOMEM; 526 goto fail; 527 } 528 529 data->buf = usbd_alloc_buffer(data->xfer, 530 RT2573_TX_DESC_SIZE + MCLBYTES); 531 if (data->buf == NULL) { 532 printf("%s: could not allocate tx buffer\n", 533 USBDEVNAME(sc->sc_dev)); 534 error = ENOMEM; 535 goto fail; 536 } 537 538 /* clean Tx descriptor */ 539 bzero(data->buf, RT2573_TX_DESC_SIZE); 540 } 541 542 return 0; 543 544 fail: rum_free_tx_list(sc); 545 return error; 546 } 547 548 Static void 549 rum_free_tx_list(struct rum_softc *sc) 550 { 551 struct rum_tx_data *data; 552 int i; 553 554 for (i = 0; i < RT2573_TX_LIST_COUNT; i++) { 555 data = &sc->tx_data[i]; 556 557 if (data->xfer != NULL) { 558 usbd_free_xfer(data->xfer); 559 data->xfer = NULL; 560 } 561 562 if (data->ni != NULL) { 563 ieee80211_free_node(data->ni); 564 data->ni = NULL; 565 } 566 } 567 } 568 569 Static int 570 rum_alloc_rx_list(struct rum_softc *sc) 571 { 572 struct rum_rx_data *data; 573 int i, error; 574 575 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 576 data = &sc->rx_data[i]; 577 578 data->sc = sc; 579 580 data->xfer = usbd_alloc_xfer(sc->sc_udev); 581 if (data->xfer == NULL) { 582 printf("%s: could not allocate rx xfer\n", 583 USBDEVNAME(sc->sc_dev)); 584 error = ENOMEM; 585 goto fail; 586 } 587 588 if (usbd_alloc_buffer(data->xfer, MCLBYTES) == NULL) { 589 printf("%s: could not allocate rx buffer\n", 590 USBDEVNAME(sc->sc_dev)); 591 error = ENOMEM; 592 goto fail; 593 } 594 595 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 596 if (data->m == NULL) { 597 printf("%s: could not allocate rx mbuf\n", 598 USBDEVNAME(sc->sc_dev)); 599 error = ENOMEM; 600 goto fail; 601 } 602 603 MCLGET(data->m, M_DONTWAIT); 604 if (!(data->m->m_flags & M_EXT)) { 605 printf("%s: could not allocate rx mbuf cluster\n", 606 USBDEVNAME(sc->sc_dev)); 607 error = ENOMEM; 608 goto fail; 609 } 610 611 data->buf = mtod(data->m, uint8_t *); 612 } 613 614 return 0; 615 616 fail: rum_free_tx_list(sc); 617 return error; 618 } 619 620 Static void 621 rum_free_rx_list(struct rum_softc *sc) 622 { 623 struct rum_rx_data *data; 624 int i; 625 626 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 627 data = &sc->rx_data[i]; 628 629 if (data->xfer != NULL) { 630 usbd_free_xfer(data->xfer); 631 data->xfer = NULL; 632 } 633 634 if (data->m != NULL) { 635 m_freem(data->m); 636 data->m = NULL; 637 } 638 } 639 } 640 641 Static int 642 rum_media_change(struct ifnet *ifp) 643 { 644 int error; 645 646 error = ieee80211_media_change(ifp); 647 if (error != ENETRESET) 648 return error; 649 650 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 651 rum_init(ifp); 652 653 return 0; 654 } 655 656 /* 657 * This function is called periodically (every 200ms) during scanning to 658 * switch from one channel to another. 659 */ 660 Static void 661 rum_next_scan(void *arg) 662 { 663 struct rum_softc *sc = arg; 664 struct ieee80211com *ic = &sc->sc_ic; 665 666 if (ic->ic_state == IEEE80211_S_SCAN) 667 ieee80211_next_scan(ic); 668 } 669 670 Static void 671 rum_task(void *arg) 672 { 673 struct rum_softc *sc = arg; 674 struct ieee80211com *ic = &sc->sc_ic; 675 enum ieee80211_state ostate; 676 struct ieee80211_node *ni; 677 uint32_t tmp; 678 679 ostate = ic->ic_state; 680 681 switch (sc->sc_state) { 682 case IEEE80211_S_INIT: 683 if (ostate == IEEE80211_S_RUN) { 684 /* abort TSF synchronization */ 685 tmp = rum_read(sc, RT2573_TXRX_CSR9); 686 rum_write(sc, RT2573_TXRX_CSR9, tmp & ~0x00ffffff); 687 } 688 break; 689 690 case IEEE80211_S_SCAN: 691 rum_set_chan(sc, ic->ic_curchan); 692 callout_reset(&sc->scan_ch, hz / 5, rum_next_scan, sc); 693 break; 694 695 case IEEE80211_S_AUTH: 696 rum_set_chan(sc, ic->ic_curchan); 697 break; 698 699 case IEEE80211_S_ASSOC: 700 rum_set_chan(sc, ic->ic_curchan); 701 break; 702 703 case IEEE80211_S_RUN: 704 rum_set_chan(sc, ic->ic_curchan); 705 706 ni = ic->ic_bss; 707 708 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 709 rum_update_slot(sc); 710 rum_enable_mrr(sc); 711 rum_set_txpreamble(sc); 712 rum_set_basicrates(sc); 713 rum_set_bssid(sc, ni->ni_bssid); 714 } 715 716 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 717 ic->ic_opmode == IEEE80211_M_IBSS) 718 rum_prepare_beacon(sc); 719 720 if (ic->ic_opmode != IEEE80211_M_MONITOR) 721 rum_enable_tsf_sync(sc); 722 723 /* enable automatic rate adaptation in STA mode */ 724 if (ic->ic_opmode == IEEE80211_M_STA && 725 ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE) 726 rum_amrr_start(sc, ni); 727 728 break; 729 } 730 731 sc->sc_newstate(ic, sc->sc_state, -1); 732 } 733 734 Static int 735 rum_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 736 { 737 struct rum_softc *sc = ic->ic_ifp->if_softc; 738 739 usb_rem_task(sc->sc_udev, &sc->sc_task); 740 callout_stop(&sc->scan_ch); 741 callout_stop(&sc->amrr_ch); 742 743 /* do it in a process context */ 744 sc->sc_state = nstate; 745 usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER); 746 747 return 0; 748 } 749 750 /* quickly determine if a given rate is CCK or OFDM */ 751 #define RUM_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 752 753 #define RUM_ACK_SIZE 14 /* 10 + 4(FCS) */ 754 #define RUM_CTS_SIZE 14 /* 10 + 4(FCS) */ 755 756 Static void 757 rum_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 758 { 759 struct rum_tx_data *data = priv; 760 struct rum_softc *sc = data->sc; 761 struct ifnet *ifp = &sc->sc_if; 762 int s; 763 764 if (status != USBD_NORMAL_COMPLETION) { 765 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 766 return; 767 768 printf("%s: could not transmit buffer: %s\n", 769 USBDEVNAME(sc->sc_dev), usbd_errstr(status)); 770 771 if (status == USBD_STALLED) 772 usbd_clear_endpoint_stall_async(sc->sc_tx_pipeh); 773 774 ifp->if_oerrors++; 775 return; 776 } 777 778 s = splnet(); 779 780 m_freem(data->m); 781 data->m = NULL; 782 ieee80211_free_node(data->ni); 783 data->ni = NULL; 784 785 sc->tx_queued--; 786 ifp->if_opackets++; 787 788 DPRINTFN(10, ("tx done\n")); 789 790 sc->sc_tx_timer = 0; 791 ifp->if_flags &= ~IFF_OACTIVE; 792 rum_start(ifp); 793 794 splx(s); 795 } 796 797 Static void 798 rum_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 799 { 800 struct rum_rx_data *data = priv; 801 struct rum_softc *sc = data->sc; 802 struct ieee80211com *ic = &sc->sc_ic; 803 struct ifnet *ifp = &sc->sc_if; 804 struct rum_rx_desc *desc; 805 struct ieee80211_frame *wh; 806 struct ieee80211_node *ni; 807 struct mbuf *mnew, *m; 808 int s, len; 809 810 if (status != USBD_NORMAL_COMPLETION) { 811 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 812 return; 813 814 if (status == USBD_STALLED) 815 usbd_clear_endpoint_stall_async(sc->sc_rx_pipeh); 816 goto skip; 817 } 818 819 usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); 820 821 if (len < RT2573_RX_DESC_SIZE + sizeof (struct ieee80211_frame_min)) { 822 DPRINTF(("%s: xfer too short %d\n", USBDEVNAME(sc->sc_dev), 823 len)); 824 ifp->if_ierrors++; 825 goto skip; 826 } 827 828 desc = (struct rum_rx_desc *)data->buf; 829 830 if (le32toh(desc->flags) & RT2573_RX_CRC_ERROR) { 831 /* 832 * This should not happen since we did not request to receive 833 * those frames when we filled RT2573_TXRX_CSR0. 834 */ 835 DPRINTFN(5, ("CRC error\n")); 836 ifp->if_ierrors++; 837 goto skip; 838 } 839 840 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 841 if (mnew == NULL) { 842 printf("%s: could not allocate rx mbuf\n", 843 USBDEVNAME(sc->sc_dev)); 844 ifp->if_ierrors++; 845 goto skip; 846 } 847 848 MCLGET(mnew, M_DONTWAIT); 849 if (!(mnew->m_flags & M_EXT)) { 850 printf("%s: could not allocate rx mbuf cluster\n", 851 USBDEVNAME(sc->sc_dev)); 852 m_freem(mnew); 853 ifp->if_ierrors++; 854 goto skip; 855 } 856 857 m = data->m; 858 data->m = mnew; 859 data->buf = mtod(data->m, uint8_t *); 860 861 /* finalize mbuf */ 862 m->m_pkthdr.rcvif = ifp; 863 m->m_data = (caddr_t)(desc + 1); 864 m->m_pkthdr.len = m->m_len = (le32toh(desc->flags) >> 16) & 0xfff; 865 866 s = splnet(); 867 868 #if NBPFILTER > 0 869 if (sc->sc_drvbpf != NULL) { 870 struct rum_rx_radiotap_header *tap = &sc->sc_rxtap; 871 872 tap->wr_flags = IEEE80211_RADIOTAP_F_FCS; 873 tap->wr_rate = rum_rxrate(desc); 874 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 875 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 876 tap->wr_antenna = sc->rx_ant; 877 tap->wr_antsignal = desc->rssi; 878 879 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 880 } 881 #endif 882 883 wh = mtod(m, struct ieee80211_frame *); 884 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 885 886 /* send the frame to the 802.11 layer */ 887 ieee80211_input(ic, m, ni, desc->rssi, 0); 888 889 /* node is no longer needed */ 890 ieee80211_free_node(ni); 891 892 splx(s); 893 894 DPRINTFN(15, ("rx done\n")); 895 896 skip: /* setup a new transfer */ 897 usbd_setup_xfer(xfer, sc->sc_rx_pipeh, data, data->buf, MCLBYTES, 898 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 899 usbd_transfer(xfer); 900 } 901 902 /* 903 * This function is only used by the Rx radiotap code. It returns the rate at 904 * which a given frame was received. 905 */ 906 #if NBPFILTER > 0 907 Static uint8_t 908 rum_rxrate(struct rum_rx_desc *desc) 909 { 910 if (le32toh(desc->flags) & RT2573_RX_OFDM) { 911 /* reverse function of rum_plcp_signal */ 912 switch (desc->rate) { 913 case 0xb: return 12; 914 case 0xf: return 18; 915 case 0xa: return 24; 916 case 0xe: return 36; 917 case 0x9: return 48; 918 case 0xd: return 72; 919 case 0x8: return 96; 920 case 0xc: return 108; 921 } 922 } else { 923 if (desc->rate == 10) 924 return 2; 925 if (desc->rate == 20) 926 return 4; 927 if (desc->rate == 55) 928 return 11; 929 if (desc->rate == 110) 930 return 22; 931 } 932 return 2; /* should not get there */ 933 } 934 #endif 935 936 /* 937 * Return the expected ack rate for a frame transmitted at rate `rate'. 938 * XXX: this should depend on the destination node basic rate set. 939 */ 940 Static int 941 rum_ack_rate(struct ieee80211com *ic, int rate) 942 { 943 switch (rate) { 944 /* CCK rates */ 945 case 2: 946 return 2; 947 case 4: 948 case 11: 949 case 22: 950 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 951 952 /* OFDM rates */ 953 case 12: 954 case 18: 955 return 12; 956 case 24: 957 case 36: 958 return 24; 959 case 48: 960 case 72: 961 case 96: 962 case 108: 963 return 48; 964 } 965 966 /* default to 1Mbps */ 967 return 2; 968 } 969 970 /* 971 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 972 * The function automatically determines the operating mode depending on the 973 * given rate. `flags' indicates whether short preamble is in use or not. 974 */ 975 Static uint16_t 976 rum_txtime(int len, int rate, uint32_t flags) 977 { 978 uint16_t txtime; 979 980 if (RUM_RATE_IS_OFDM(rate)) { 981 /* IEEE Std 802.11a-1999, pp. 37 */ 982 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 983 txtime = 16 + 4 + 4 * txtime + 6; 984 } else { 985 /* IEEE Std 802.11b-1999, pp. 28 */ 986 txtime = (16 * len + rate - 1) / rate; 987 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 988 txtime += 72 + 24; 989 else 990 txtime += 144 + 48; 991 } 992 return txtime; 993 } 994 995 Static uint8_t 996 rum_plcp_signal(int rate) 997 { 998 switch (rate) { 999 /* CCK rates (returned values are device-dependent) */ 1000 case 2: return 0x0; 1001 case 4: return 0x1; 1002 case 11: return 0x2; 1003 case 22: return 0x3; 1004 1005 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1006 case 12: return 0xb; 1007 case 18: return 0xf; 1008 case 24: return 0xa; 1009 case 36: return 0xe; 1010 case 48: return 0x9; 1011 case 72: return 0xd; 1012 case 96: return 0x8; 1013 case 108: return 0xc; 1014 1015 /* unsupported rates (should not get there) */ 1016 default: return 0xff; 1017 } 1018 } 1019 1020 Static void 1021 rum_setup_tx_desc(struct rum_softc *sc, struct rum_tx_desc *desc, 1022 uint32_t flags, uint16_t xflags, int len, int rate) 1023 { 1024 struct ieee80211com *ic = &sc->sc_ic; 1025 uint16_t plcp_length; 1026 int remainder; 1027 1028 desc->flags = htole32(flags); 1029 desc->flags |= htole32(RT2573_TX_VALID); 1030 desc->flags |= htole32(len << 16); 1031 1032 desc->xflags = htole16(xflags); 1033 1034 desc->wme = htole16( 1035 RT2573_QID(0) | 1036 RT2573_AIFSN(2) | 1037 RT2573_LOGCWMIN(4) | 1038 RT2573_LOGCWMAX(10)); 1039 1040 /* setup PLCP fields */ 1041 desc->plcp_signal = rum_plcp_signal(rate); 1042 desc->plcp_service = 4; 1043 1044 len += IEEE80211_CRC_LEN; 1045 if (RUM_RATE_IS_OFDM(rate)) { 1046 desc->flags |= htole32(RT2573_TX_OFDM); 1047 1048 plcp_length = len & 0xfff; 1049 desc->plcp_length_hi = plcp_length >> 6; 1050 desc->plcp_length_lo = plcp_length & 0x3f; 1051 } else { 1052 plcp_length = (16 * len + rate - 1) / rate; 1053 if (rate == 22) { 1054 remainder = (16 * len) % 22; 1055 if (remainder != 0 && remainder < 7) 1056 desc->plcp_service |= RT2573_PLCP_LENGEXT; 1057 } 1058 desc->plcp_length_hi = plcp_length >> 8; 1059 desc->plcp_length_lo = plcp_length & 0xff; 1060 1061 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1062 desc->plcp_signal |= 0x08; 1063 } 1064 } 1065 1066 #define RUM_TX_TIMEOUT 5000 1067 1068 Static int 1069 rum_tx_mgt(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1070 { 1071 struct ieee80211com *ic = &sc->sc_ic; 1072 struct rum_tx_desc *desc; 1073 struct rum_tx_data *data; 1074 struct ieee80211_frame *wh; 1075 uint32_t flags = 0; 1076 uint16_t dur; 1077 usbd_status error; 1078 int xferlen, rate; 1079 1080 data = &sc->tx_data[0]; 1081 desc = (struct rum_tx_desc *)data->buf; 1082 1083 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 1084 1085 data->m = m0; 1086 data->ni = ni; 1087 1088 wh = mtod(m0, struct ieee80211_frame *); 1089 1090 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1091 flags |= RT2573_TX_ACK; 1092 1093 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1094 ic->ic_flags) + sc->sifs; 1095 *(uint16_t *)wh->i_dur = htole16(dur); 1096 1097 /* tell hardware to set timestamp in probe responses */ 1098 if ((wh->i_fc[0] & 1099 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1100 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1101 flags |= RT2573_TX_TIMESTAMP; 1102 } 1103 1104 #if NBPFILTER > 0 1105 if (sc->sc_drvbpf != NULL) { 1106 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1107 1108 tap->wt_flags = 0; 1109 tap->wt_rate = rate; 1110 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1111 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1112 tap->wt_antenna = sc->tx_ant; 1113 1114 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1115 } 1116 #endif 1117 1118 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1119 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1120 1121 /* align end on a 4-bytes boundary */ 1122 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1123 1124 /* 1125 * No space left in the last URB to store the extra 4 bytes, force 1126 * sending of another URB. 1127 */ 1128 if ((xferlen % 64) == 0) 1129 xferlen += 4; 1130 1131 DPRINTFN(10, ("sending msg frame len=%u rate=%u xfer len=%u\n", 1132 m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, rate, xferlen)); 1133 1134 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1135 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1136 1137 error = usbd_transfer(data->xfer); 1138 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1139 m_freem(m0); 1140 return error; 1141 } 1142 1143 sc->tx_queued++; 1144 1145 return 0; 1146 } 1147 1148 Static int 1149 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1150 { 1151 struct ieee80211com *ic = &sc->sc_ic; 1152 struct rum_tx_desc *desc; 1153 struct rum_tx_data *data; 1154 struct ieee80211_frame *wh; 1155 struct ieee80211_key *k; 1156 uint32_t flags = 0; 1157 uint16_t dur; 1158 usbd_status error; 1159 int xferlen, rate; 1160 1161 wh = mtod(m0, struct ieee80211_frame *); 1162 1163 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1164 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1165 else 1166 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1167 rate &= IEEE80211_RATE_VAL; 1168 1169 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1170 k = ieee80211_crypto_encap(ic, ni, m0); 1171 if (k == NULL) { 1172 m_freem(m0); 1173 return ENOBUFS; 1174 } 1175 1176 /* packet header may have moved, reset our local pointer */ 1177 wh = mtod(m0, struct ieee80211_frame *); 1178 } 1179 1180 data = &sc->tx_data[0]; 1181 desc = (struct rum_tx_desc *)data->buf; 1182 1183 data->m = m0; 1184 data->ni = ni; 1185 1186 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1187 flags |= RT2573_TX_ACK; 1188 1189 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1190 ic->ic_flags) + sc->sifs; 1191 *(uint16_t *)wh->i_dur = htole16(dur); 1192 } 1193 1194 #if NBPFILTER > 0 1195 if (sc->sc_drvbpf != NULL) { 1196 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1197 1198 tap->wt_flags = 0; 1199 tap->wt_rate = rate; 1200 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1201 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1202 tap->wt_antenna = sc->tx_ant; 1203 1204 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1205 } 1206 #endif 1207 1208 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1209 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1210 1211 /* align end on a 4-bytes boundary */ 1212 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1213 1214 /* 1215 * No space left in the last URB to store the extra 4 bytes, force 1216 * sending of another URB. 1217 */ 1218 if ((xferlen % 64) == 0) 1219 xferlen += 4; 1220 1221 DPRINTFN(10, ("sending data frame len=%u rate=%u xfer len=%u\n", 1222 m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 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, caddr_t 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 Sep 24 05:09:52 GMT 2025