if_rum.c revision 1.8
1 /* $OpenBSD: if_rum.c,v 1.40 2006/09/18 16:20:20 damien Exp $ */ 2 /* $NetBSD: if_rum.c,v 1.8 2007/03/11 09:38:24 mlelstv 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 1.8 2007/03/11 09:38:24 mlelstv 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, void *); 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 = (void *)(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=%zu rate=%u xfer len=%u\n", 1132 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1133 rate, xferlen)); 1134 1135 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1136 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1137 1138 error = usbd_transfer(data->xfer); 1139 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1140 m_freem(m0); 1141 return error; 1142 } 1143 1144 sc->tx_queued++; 1145 1146 return 0; 1147 } 1148 1149 Static int 1150 rum_tx_data(struct rum_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) 1151 { 1152 struct ieee80211com *ic = &sc->sc_ic; 1153 struct rum_tx_desc *desc; 1154 struct rum_tx_data *data; 1155 struct ieee80211_frame *wh; 1156 struct ieee80211_key *k; 1157 uint32_t flags = 0; 1158 uint16_t dur; 1159 usbd_status error; 1160 int xferlen, rate; 1161 1162 wh = mtod(m0, struct ieee80211_frame *); 1163 1164 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) 1165 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_fixed_rate]; 1166 else 1167 rate = ni->ni_rates.rs_rates[ni->ni_txrate]; 1168 rate &= IEEE80211_RATE_VAL; 1169 1170 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1171 k = ieee80211_crypto_encap(ic, ni, m0); 1172 if (k == NULL) { 1173 m_freem(m0); 1174 return ENOBUFS; 1175 } 1176 1177 /* packet header may have moved, reset our local pointer */ 1178 wh = mtod(m0, struct ieee80211_frame *); 1179 } 1180 1181 data = &sc->tx_data[0]; 1182 desc = (struct rum_tx_desc *)data->buf; 1183 1184 data->m = m0; 1185 data->ni = ni; 1186 1187 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1188 flags |= RT2573_TX_ACK; 1189 1190 dur = rum_txtime(RUM_ACK_SIZE, rum_ack_rate(ic, rate), 1191 ic->ic_flags) + sc->sifs; 1192 *(uint16_t *)wh->i_dur = htole16(dur); 1193 } 1194 1195 #if NBPFILTER > 0 1196 if (sc->sc_drvbpf != NULL) { 1197 struct rum_tx_radiotap_header *tap = &sc->sc_txtap; 1198 1199 tap->wt_flags = 0; 1200 tap->wt_rate = rate; 1201 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1202 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1203 tap->wt_antenna = sc->tx_ant; 1204 1205 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1206 } 1207 #endif 1208 1209 m_copydata(m0, 0, m0->m_pkthdr.len, data->buf + RT2573_TX_DESC_SIZE); 1210 rum_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate); 1211 1212 /* align end on a 4-bytes boundary */ 1213 xferlen = (RT2573_TX_DESC_SIZE + m0->m_pkthdr.len + 3) & ~3; 1214 1215 /* 1216 * No space left in the last URB to store the extra 4 bytes, force 1217 * sending of another URB. 1218 */ 1219 if ((xferlen % 64) == 0) 1220 xferlen += 4; 1221 1222 DPRINTFN(10, ("sending data frame len=%zu rate=%u xfer len=%u\n", 1223 (size_t)m0->m_pkthdr.len + RT2573_TX_DESC_SIZE, 1224 rate, xferlen)); 1225 1226 usbd_setup_xfer(data->xfer, sc->sc_tx_pipeh, data, data->buf, xferlen, 1227 USBD_FORCE_SHORT_XFER | USBD_NO_COPY, RUM_TX_TIMEOUT, rum_txeof); 1228 1229 error = usbd_transfer(data->xfer); 1230 if (error != USBD_NORMAL_COMPLETION && error != USBD_IN_PROGRESS) { 1231 m_freem(m0); 1232 return error; 1233 } 1234 1235 sc->tx_queued++; 1236 1237 return 0; 1238 } 1239 1240 Static void 1241 rum_start(struct ifnet *ifp) 1242 { 1243 struct rum_softc *sc = ifp->if_softc; 1244 struct ieee80211com *ic = &sc->sc_ic; 1245 struct ether_header *eh; 1246 struct ieee80211_node *ni; 1247 struct mbuf *m0; 1248 1249 for (;;) { 1250 IF_POLL(&ic->ic_mgtq, m0); 1251 if (m0 != NULL) { 1252 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1253 ifp->if_flags |= IFF_OACTIVE; 1254 break; 1255 } 1256 IF_DEQUEUE(&ic->ic_mgtq, m0); 1257 1258 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1259 m0->m_pkthdr.rcvif = NULL; 1260 #if NBPFILTER > 0 1261 if (ic->ic_rawbpf != NULL) 1262 bpf_mtap(ic->ic_rawbpf, m0); 1263 #endif 1264 if (rum_tx_mgt(sc, m0, ni) != 0) 1265 break; 1266 1267 } else { 1268 if (ic->ic_state != IEEE80211_S_RUN) 1269 break; 1270 IFQ_POLL(&ifp->if_snd, m0); 1271 if (m0 == NULL) 1272 break; 1273 if (sc->tx_queued >= RT2573_TX_LIST_COUNT) { 1274 ifp->if_flags |= IFF_OACTIVE; 1275 break; 1276 } 1277 IFQ_DEQUEUE(&ifp->if_snd, m0); 1278 if (m0->m_len < sizeof(struct ether_header) && 1279 !(m0 = m_pullup(m0, sizeof(struct ether_header)))) 1280 continue; 1281 1282 eh = mtod(m0, struct ether_header *); 1283 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1284 if (ni == NULL) { 1285 m_freem(m0); 1286 continue; 1287 } 1288 #if NBPFILTER > 0 1289 if (ifp->if_bpf != NULL) 1290 bpf_mtap(ifp->if_bpf, m0); 1291 #endif 1292 m0 = ieee80211_encap(ic, m0, ni); 1293 if (m0 == NULL) { 1294 ieee80211_free_node(ni); 1295 continue; 1296 } 1297 #if NBPFILTER > 0 1298 if (ic->ic_rawbpf != NULL) 1299 bpf_mtap(ic->ic_rawbpf, m0); 1300 #endif 1301 if (rum_tx_data(sc, m0, ni) != 0) { 1302 ieee80211_free_node(ni); 1303 ifp->if_oerrors++; 1304 break; 1305 } 1306 } 1307 1308 sc->sc_tx_timer = 5; 1309 ifp->if_timer = 1; 1310 } 1311 } 1312 1313 Static void 1314 rum_watchdog(struct ifnet *ifp) 1315 { 1316 struct rum_softc *sc = ifp->if_softc; 1317 struct ieee80211com *ic = &sc->sc_ic; 1318 1319 ifp->if_timer = 0; 1320 1321 if (sc->sc_tx_timer > 0) { 1322 if (--sc->sc_tx_timer == 0) { 1323 printf("%s: device timeout\n", USBDEVNAME(sc->sc_dev)); 1324 /*rum_init(ifp); XXX needs a process context! */ 1325 ifp->if_oerrors++; 1326 return; 1327 } 1328 ifp->if_timer = 1; 1329 } 1330 1331 ieee80211_watchdog(ic); 1332 } 1333 1334 Static int 1335 rum_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1336 { 1337 struct rum_softc *sc = ifp->if_softc; 1338 struct ieee80211com *ic = &sc->sc_ic; 1339 int s, error = 0; 1340 1341 s = splnet(); 1342 1343 switch (cmd) { 1344 case SIOCSIFFLAGS: 1345 if (ifp->if_flags & IFF_UP) { 1346 if (ifp->if_flags & IFF_RUNNING) 1347 rum_update_promisc(sc); 1348 else 1349 rum_init(ifp); 1350 } else { 1351 if (ifp->if_flags & IFF_RUNNING) 1352 rum_stop(ifp, 1); 1353 } 1354 break; 1355 1356 default: 1357 error = ieee80211_ioctl(ic, cmd, data); 1358 } 1359 1360 if (error == ENETRESET) { 1361 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1362 (IFF_UP | IFF_RUNNING)) 1363 rum_init(ifp); 1364 error = 0; 1365 } 1366 1367 splx(s); 1368 1369 return error; 1370 } 1371 1372 Static void 1373 rum_eeprom_read(struct rum_softc *sc, uint16_t addr, void *buf, int len) 1374 { 1375 usb_device_request_t req; 1376 usbd_status error; 1377 1378 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1379 req.bRequest = RT2573_READ_EEPROM; 1380 USETW(req.wValue, 0); 1381 USETW(req.wIndex, addr); 1382 USETW(req.wLength, len); 1383 1384 error = usbd_do_request(sc->sc_udev, &req, buf); 1385 if (error != 0) { 1386 printf("%s: could not read EEPROM: %s\n", 1387 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1388 } 1389 } 1390 1391 Static uint32_t 1392 rum_read(struct rum_softc *sc, uint16_t reg) 1393 { 1394 uint32_t val; 1395 1396 rum_read_multi(sc, reg, &val, sizeof val); 1397 1398 return le32toh(val); 1399 } 1400 1401 Static void 1402 rum_read_multi(struct rum_softc *sc, uint16_t reg, void *buf, int len) 1403 { 1404 usb_device_request_t req; 1405 usbd_status error; 1406 1407 req.bmRequestType = UT_READ_VENDOR_DEVICE; 1408 req.bRequest = RT2573_READ_MULTI_MAC; 1409 USETW(req.wValue, 0); 1410 USETW(req.wIndex, reg); 1411 USETW(req.wLength, len); 1412 1413 error = usbd_do_request(sc->sc_udev, &req, buf); 1414 if (error != 0) { 1415 printf("%s: could not multi read MAC register: %s\n", 1416 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1417 } 1418 } 1419 1420 Static void 1421 rum_write(struct rum_softc *sc, uint16_t reg, uint32_t val) 1422 { 1423 uint32_t tmp = htole32(val); 1424 1425 rum_write_multi(sc, reg, &tmp, sizeof tmp); 1426 } 1427 1428 Static void 1429 rum_write_multi(struct rum_softc *sc, uint16_t reg, void *buf, size_t len) 1430 { 1431 usb_device_request_t req; 1432 usbd_status error; 1433 1434 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 1435 req.bRequest = RT2573_WRITE_MULTI_MAC; 1436 USETW(req.wValue, 0); 1437 USETW(req.wIndex, reg); 1438 USETW(req.wLength, len); 1439 1440 error = usbd_do_request(sc->sc_udev, &req, buf); 1441 if (error != 0) { 1442 printf("%s: could not multi write MAC register: %s\n", 1443 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1444 } 1445 } 1446 1447 Static void 1448 rum_bbp_write(struct rum_softc *sc, uint8_t reg, uint8_t val) 1449 { 1450 uint32_t tmp; 1451 int ntries; 1452 1453 for (ntries = 0; ntries < 5; ntries++) { 1454 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1455 break; 1456 } 1457 if (ntries == 5) { 1458 printf("%s: could not write to BBP\n", USBDEVNAME(sc->sc_dev)); 1459 return; 1460 } 1461 1462 tmp = RT2573_BBP_BUSY | (reg & 0x7f) << 8 | val; 1463 rum_write(sc, RT2573_PHY_CSR3, tmp); 1464 } 1465 1466 Static uint8_t 1467 rum_bbp_read(struct rum_softc *sc, uint8_t reg) 1468 { 1469 uint32_t val; 1470 int ntries; 1471 1472 for (ntries = 0; ntries < 5; ntries++) { 1473 if (!(rum_read(sc, RT2573_PHY_CSR3) & RT2573_BBP_BUSY)) 1474 break; 1475 } 1476 if (ntries == 5) { 1477 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1478 return 0; 1479 } 1480 1481 val = RT2573_BBP_BUSY | RT2573_BBP_READ | reg << 8; 1482 rum_write(sc, RT2573_PHY_CSR3, val); 1483 1484 for (ntries = 0; ntries < 100; ntries++) { 1485 val = rum_read(sc, RT2573_PHY_CSR3); 1486 if (!(val & RT2573_BBP_BUSY)) 1487 return val & 0xff; 1488 DELAY(1); 1489 } 1490 1491 printf("%s: could not read BBP\n", USBDEVNAME(sc->sc_dev)); 1492 return 0; 1493 } 1494 1495 Static void 1496 rum_rf_write(struct rum_softc *sc, uint8_t reg, uint32_t val) 1497 { 1498 uint32_t tmp; 1499 int ntries; 1500 1501 for (ntries = 0; ntries < 5; ntries++) { 1502 if (!(rum_read(sc, RT2573_PHY_CSR4) & RT2573_RF_BUSY)) 1503 break; 1504 } 1505 if (ntries == 5) { 1506 printf("%s: could not write to RF\n", USBDEVNAME(sc->sc_dev)); 1507 return; 1508 } 1509 1510 tmp = RT2573_RF_BUSY | RT2573_RF_20BIT | (val & 0xfffff) << 2 | 1511 (reg & 3); 1512 rum_write(sc, RT2573_PHY_CSR4, tmp); 1513 1514 /* remember last written value in sc */ 1515 sc->rf_regs[reg] = val; 1516 1517 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 3, val & 0xfffff)); 1518 } 1519 1520 Static void 1521 rum_select_antenna(struct rum_softc *sc) 1522 { 1523 uint8_t bbp4, bbp77; 1524 uint32_t tmp; 1525 1526 bbp4 = rum_bbp_read(sc, 4); 1527 bbp77 = rum_bbp_read(sc, 77); 1528 1529 /* TBD */ 1530 1531 /* make sure Rx is disabled before switching antenna */ 1532 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1533 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 1534 1535 rum_bbp_write(sc, 4, bbp4); 1536 rum_bbp_write(sc, 77, bbp77); 1537 1538 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1539 } 1540 1541 /* 1542 * Enable multi-rate retries for frames sent at OFDM rates. 1543 * In 802.11b/g mode, allow fallback to CCK rates. 1544 */ 1545 Static void 1546 rum_enable_mrr(struct rum_softc *sc) 1547 { 1548 struct ieee80211com *ic = &sc->sc_ic; 1549 uint32_t tmp; 1550 1551 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1552 1553 tmp &= ~RT2573_MRR_CCK_FALLBACK; 1554 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 1555 tmp |= RT2573_MRR_CCK_FALLBACK; 1556 tmp |= RT2573_MRR_ENABLED; 1557 1558 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1559 } 1560 1561 Static void 1562 rum_set_txpreamble(struct rum_softc *sc) 1563 { 1564 uint32_t tmp; 1565 1566 tmp = rum_read(sc, RT2573_TXRX_CSR4); 1567 1568 tmp &= ~RT2573_SHORT_PREAMBLE; 1569 if (sc->sc_ic.ic_flags & IEEE80211_F_SHPREAMBLE) 1570 tmp |= RT2573_SHORT_PREAMBLE; 1571 1572 rum_write(sc, RT2573_TXRX_CSR4, tmp); 1573 } 1574 1575 Static void 1576 rum_set_basicrates(struct rum_softc *sc) 1577 { 1578 struct ieee80211com *ic = &sc->sc_ic; 1579 1580 /* update basic rate set */ 1581 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1582 /* 11b basic rates: 1, 2Mbps */ 1583 rum_write(sc, RT2573_TXRX_CSR5, 0x3); 1584 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 1585 /* 11a basic rates: 6, 12, 24Mbps */ 1586 rum_write(sc, RT2573_TXRX_CSR5, 0x150); 1587 } else { 1588 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 1589 rum_write(sc, RT2573_TXRX_CSR5, 0x15f); 1590 } 1591 } 1592 1593 /* 1594 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1595 * driver. 1596 */ 1597 Static void 1598 rum_select_band(struct rum_softc *sc, struct ieee80211_channel *c) 1599 { 1600 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1601 uint32_t tmp; 1602 1603 /* update all BBP registers that depend on the band */ 1604 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1605 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1606 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1607 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1608 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1609 } 1610 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1611 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1612 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1613 } 1614 1615 sc->bbp17 = bbp17; 1616 rum_bbp_write(sc, 17, bbp17); 1617 rum_bbp_write(sc, 96, bbp96); 1618 rum_bbp_write(sc, 104, bbp104); 1619 1620 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1621 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1622 rum_bbp_write(sc, 75, 0x80); 1623 rum_bbp_write(sc, 86, 0x80); 1624 rum_bbp_write(sc, 88, 0x80); 1625 } 1626 1627 rum_bbp_write(sc, 35, bbp35); 1628 rum_bbp_write(sc, 97, bbp97); 1629 rum_bbp_write(sc, 98, bbp98); 1630 1631 tmp = rum_read(sc, RT2573_PHY_CSR0); 1632 tmp &= ~(RT2573_PA_PE_2GHZ | RT2573_PA_PE_5GHZ); 1633 if (IEEE80211_IS_CHAN_2GHZ(c)) 1634 tmp |= RT2573_PA_PE_2GHZ; 1635 else 1636 tmp |= RT2573_PA_PE_5GHZ; 1637 rum_write(sc, RT2573_PHY_CSR0, tmp); 1638 1639 /* 802.11a uses a 16 microseconds short interframe space */ 1640 sc->sifs = IEEE80211_IS_CHAN_5GHZ(c) ? 16 : 10; 1641 } 1642 1643 Static void 1644 rum_set_chan(struct rum_softc *sc, struct ieee80211_channel *c) 1645 { 1646 struct ieee80211com *ic = &sc->sc_ic; 1647 const struct rfprog *rfprog; 1648 uint8_t bbp3, bbp94 = RT2573_BBPR94_DEFAULT; 1649 int8_t power; 1650 u_int i, chan; 1651 1652 chan = ieee80211_chan2ieee(ic, c); 1653 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 1654 return; 1655 1656 /* select the appropriate RF settings based on what EEPROM says */ 1657 rfprog = (sc->rf_rev == RT2573_RF_5225 || 1658 sc->rf_rev == RT2573_RF_2527) ? rum_rf5225 : rum_rf5226; 1659 1660 /* find the settings for this channel (we know it exists) */ 1661 for (i = 0; rfprog[i].chan != chan; i++); 1662 1663 power = sc->txpow[i]; 1664 if (power < 0) { 1665 bbp94 += power; 1666 power = 0; 1667 } else if (power > 31) { 1668 bbp94 += power - 31; 1669 power = 31; 1670 } 1671 1672 /* 1673 * If we are switching from the 2GHz band to the 5GHz band or 1674 * vice-versa, BBP registers need to be reprogrammed. 1675 */ 1676 if (c->ic_flags != ic->ic_curchan->ic_flags) { 1677 rum_select_band(sc, c); 1678 rum_select_antenna(sc); 1679 } 1680 ic->ic_curchan = c; 1681 1682 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1683 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1684 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1685 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1686 1687 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1688 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1689 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7 | 1); 1690 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1691 1692 rum_rf_write(sc, RT2573_RF1, rfprog[i].r1); 1693 rum_rf_write(sc, RT2573_RF2, rfprog[i].r2); 1694 rum_rf_write(sc, RT2573_RF3, rfprog[i].r3 | power << 7); 1695 rum_rf_write(sc, RT2573_RF4, rfprog[i].r4 | sc->rffreq << 10); 1696 1697 DELAY(10); 1698 1699 /* enable smart mode for MIMO-capable RFs */ 1700 bbp3 = rum_bbp_read(sc, 3); 1701 1702 bbp3 &= ~RT2573_SMART_MODE; 1703 if (sc->rf_rev == RT2573_RF_5225 || sc->rf_rev == RT2573_RF_2527) 1704 bbp3 |= RT2573_SMART_MODE; 1705 1706 rum_bbp_write(sc, 3, bbp3); 1707 1708 if (bbp94 != RT2573_BBPR94_DEFAULT) 1709 rum_bbp_write(sc, 94, bbp94); 1710 } 1711 1712 /* 1713 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 1714 * and HostAP operating modes. 1715 */ 1716 Static void 1717 rum_enable_tsf_sync(struct rum_softc *sc) 1718 { 1719 struct ieee80211com *ic = &sc->sc_ic; 1720 uint32_t tmp; 1721 1722 if (ic->ic_opmode != IEEE80211_M_STA) { 1723 /* 1724 * Change default 16ms TBTT adjustment to 8ms. 1725 * Must be done before enabling beacon generation. 1726 */ 1727 rum_write(sc, RT2573_TXRX_CSR10, 1 << 12 | 8); 1728 } 1729 1730 tmp = rum_read(sc, RT2573_TXRX_CSR9) & 0xff000000; 1731 1732 /* set beacon interval (in 1/16ms unit) */ 1733 tmp |= ic->ic_bss->ni_intval * 16; 1734 1735 tmp |= RT2573_TSF_TICKING | RT2573_ENABLE_TBTT; 1736 if (ic->ic_opmode == IEEE80211_M_STA) 1737 tmp |= RT2573_TSF_MODE(1); 1738 else 1739 tmp |= RT2573_TSF_MODE(2) | RT2573_GENERATE_BEACON; 1740 1741 rum_write(sc, RT2573_TXRX_CSR9, tmp); 1742 } 1743 1744 Static void 1745 rum_update_slot(struct rum_softc *sc) 1746 { 1747 struct ieee80211com *ic = &sc->sc_ic; 1748 uint8_t slottime; 1749 uint32_t tmp; 1750 1751 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1752 1753 tmp = rum_read(sc, RT2573_MAC_CSR9); 1754 tmp = (tmp & ~0xff) | slottime; 1755 rum_write(sc, RT2573_MAC_CSR9, tmp); 1756 1757 DPRINTF(("setting slot time to %uus\n", slottime)); 1758 } 1759 1760 Static void 1761 rum_set_bssid(struct rum_softc *sc, const uint8_t *bssid) 1762 { 1763 uint32_t tmp; 1764 1765 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 1766 rum_write(sc, RT2573_MAC_CSR4, tmp); 1767 1768 tmp = bssid[4] | bssid[5] << 8 | RT2573_ONE_BSSID << 16; 1769 rum_write(sc, RT2573_MAC_CSR5, tmp); 1770 } 1771 1772 Static void 1773 rum_set_macaddr(struct rum_softc *sc, const uint8_t *addr) 1774 { 1775 uint32_t tmp; 1776 1777 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 1778 rum_write(sc, RT2573_MAC_CSR2, tmp); 1779 1780 tmp = addr[4] | addr[5] << 8 | 0xff << 16; 1781 rum_write(sc, RT2573_MAC_CSR3, tmp); 1782 } 1783 1784 Static void 1785 rum_update_promisc(struct rum_softc *sc) 1786 { 1787 struct ifnet *ifp = sc->sc_ic.ic_ifp; 1788 uint32_t tmp; 1789 1790 tmp = rum_read(sc, RT2573_TXRX_CSR0); 1791 1792 tmp &= ~RT2573_DROP_NOT_TO_ME; 1793 if (!(ifp->if_flags & IFF_PROMISC)) 1794 tmp |= RT2573_DROP_NOT_TO_ME; 1795 1796 rum_write(sc, RT2573_TXRX_CSR0, tmp); 1797 1798 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 1799 "entering" : "leaving")); 1800 } 1801 1802 Static const char * 1803 rum_get_rf(int rev) 1804 { 1805 switch (rev) { 1806 case RT2573_RF_2527: return "RT2527 (MIMO XR)"; 1807 case RT2573_RF_2528: return "RT2528"; 1808 case RT2573_RF_5225: return "RT5225 (MIMO XR)"; 1809 case RT2573_RF_5226: return "RT5226"; 1810 default: return "unknown"; 1811 } 1812 } 1813 1814 Static void 1815 rum_read_eeprom(struct rum_softc *sc) 1816 { 1817 struct ieee80211com *ic = &sc->sc_ic; 1818 uint16_t val; 1819 #ifdef RUM_DEBUG 1820 int i; 1821 #endif 1822 1823 /* read MAC/BBP type */ 1824 rum_eeprom_read(sc, RT2573_EEPROM_MACBBP, &val, 2); 1825 sc->macbbp_rev = le16toh(val); 1826 1827 /* read MAC address */ 1828 rum_eeprom_read(sc, RT2573_EEPROM_ADDRESS, ic->ic_myaddr, 6); 1829 1830 rum_eeprom_read(sc, RT2573_EEPROM_ANTENNA, &val, 2); 1831 val = le16toh(val); 1832 sc->rf_rev = (val >> 11) & 0x1f; 1833 sc->hw_radio = (val >> 10) & 0x1; 1834 sc->rx_ant = (val >> 4) & 0x3; 1835 sc->tx_ant = (val >> 2) & 0x3; 1836 sc->nb_ant = val & 0x3; 1837 1838 DPRINTF(("RF revision=%d\n", sc->rf_rev)); 1839 1840 rum_eeprom_read(sc, RT2573_EEPROM_CONFIG2, &val, 2); 1841 val = le16toh(val); 1842 sc->ext_5ghz_lna = (val >> 6) & 0x1; 1843 sc->ext_2ghz_lna = (val >> 4) & 0x1; 1844 1845 DPRINTF(("External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 1846 sc->ext_2ghz_lna, sc->ext_5ghz_lna)); 1847 1848 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_2GHZ_OFFSET, &val, 2); 1849 val = le16toh(val); 1850 if ((val & 0xff) != 0xff) 1851 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 1852 1853 rum_eeprom_read(sc, RT2573_EEPROM_RSSI_5GHZ_OFFSET, &val, 2); 1854 val = le16toh(val); 1855 if ((val & 0xff) != 0xff) 1856 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 1857 1858 DPRINTF(("RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 1859 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr)); 1860 1861 rum_eeprom_read(sc, RT2573_EEPROM_FREQ_OFFSET, &val, 2); 1862 val = le16toh(val); 1863 if ((val & 0xff) != 0xff) 1864 sc->rffreq = val & 0xff; 1865 1866 DPRINTF(("RF freq=%d\n", sc->rffreq)); 1867 1868 /* read Tx power for all a/b/g channels */ 1869 rum_eeprom_read(sc, RT2573_EEPROM_TXPOWER, sc->txpow, 14); 1870 /* XXX default Tx power for 802.11a channels */ 1871 memset(sc->txpow + 14, 24, sizeof (sc->txpow) - 14); 1872 #ifdef RUM_DEBUG 1873 for (i = 0; i < 14; i++) 1874 DPRINTF(("Channel=%d Tx power=%d\n", i + 1, sc->txpow[i])); 1875 #endif 1876 1877 /* read default values for BBP registers */ 1878 rum_eeprom_read(sc, RT2573_EEPROM_BBP_BASE, sc->bbp_prom, 2 * 16); 1879 #ifdef RUM_DEBUG 1880 for (i = 0; i < 14; i++) { 1881 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1882 continue; 1883 DPRINTF(("BBP R%d=%02x\n", sc->bbp_prom[i].reg, 1884 sc->bbp_prom[i].val)); 1885 } 1886 #endif 1887 } 1888 1889 Static int 1890 rum_bbp_init(struct rum_softc *sc) 1891 { 1892 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1893 int i, ntries; 1894 uint8_t val; 1895 1896 /* wait for BBP to be ready */ 1897 for (ntries = 0; ntries < 100; ntries++) { 1898 val = rum_bbp_read(sc, 0); 1899 if (val != 0 && val != 0xff) 1900 break; 1901 DELAY(1000); 1902 } 1903 if (ntries == 100) { 1904 printf("%s: timeout waiting for BBP\n", 1905 USBDEVNAME(sc->sc_dev)); 1906 return EIO; 1907 } 1908 1909 /* initialize BBP registers to default values */ 1910 for (i = 0; i < N(rum_def_bbp); i++) 1911 rum_bbp_write(sc, rum_def_bbp[i].reg, rum_def_bbp[i].val); 1912 1913 /* write vendor-specific BBP values (from EEPROM) */ 1914 for (i = 0; i < 16; i++) { 1915 if (sc->bbp_prom[i].reg == 0 || sc->bbp_prom[i].reg == 0xff) 1916 continue; 1917 rum_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 1918 } 1919 1920 return 0; 1921 #undef N 1922 } 1923 1924 Static int 1925 rum_init(struct ifnet *ifp) 1926 { 1927 #define N(a) (sizeof (a) / sizeof ((a)[0])) 1928 struct rum_softc *sc = ifp->if_softc; 1929 struct ieee80211com *ic = &sc->sc_ic; 1930 struct rum_rx_data *data; 1931 uint32_t tmp; 1932 usbd_status error = 0; 1933 int i, ntries; 1934 1935 if ((sc->sc_flags & RT2573_FWLOADED) == 0) { 1936 if (rum_attachhook(sc)) 1937 goto fail; 1938 } 1939 1940 rum_stop(ifp, 0); 1941 1942 /* initialize MAC registers to default values */ 1943 for (i = 0; i < N(rum_def_mac); i++) 1944 rum_write(sc, rum_def_mac[i].reg, rum_def_mac[i].val); 1945 1946 /* set host ready */ 1947 rum_write(sc, RT2573_MAC_CSR1, 3); 1948 rum_write(sc, RT2573_MAC_CSR1, 0); 1949 1950 /* wait for BBP/RF to wakeup */ 1951 for (ntries = 0; ntries < 1000; ntries++) { 1952 if (rum_read(sc, RT2573_MAC_CSR12) & 8) 1953 break; 1954 rum_write(sc, RT2573_MAC_CSR12, 4); /* force wakeup */ 1955 DELAY(1000); 1956 } 1957 if (ntries == 1000) { 1958 printf("%s: timeout waiting for BBP/RF to wakeup\n", 1959 USBDEVNAME(sc->sc_dev)); 1960 goto fail; 1961 } 1962 1963 if ((error = rum_bbp_init(sc)) != 0) 1964 goto fail; 1965 1966 /* select default channel */ 1967 rum_select_band(sc, ic->ic_curchan); 1968 rum_select_antenna(sc); 1969 rum_set_chan(sc, ic->ic_curchan); 1970 1971 /* clear STA registers */ 1972 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 1973 1974 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1975 rum_set_macaddr(sc, ic->ic_myaddr); 1976 1977 /* initialize ASIC */ 1978 rum_write(sc, RT2573_MAC_CSR1, 4); 1979 1980 /* 1981 * Allocate xfer for AMRR statistics requests. 1982 */ 1983 sc->amrr_xfer = usbd_alloc_xfer(sc->sc_udev); 1984 if (sc->amrr_xfer == NULL) { 1985 printf("%s: could not allocate AMRR xfer\n", 1986 USBDEVNAME(sc->sc_dev)); 1987 goto fail; 1988 } 1989 1990 /* 1991 * Open Tx and Rx USB bulk pipes. 1992 */ 1993 error = usbd_open_pipe(sc->sc_iface, sc->sc_tx_no, USBD_EXCLUSIVE_USE, 1994 &sc->sc_tx_pipeh); 1995 if (error != 0) { 1996 printf("%s: could not open Tx pipe: %s\n", 1997 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 1998 goto fail; 1999 } 2000 2001 error = usbd_open_pipe(sc->sc_iface, sc->sc_rx_no, USBD_EXCLUSIVE_USE, 2002 &sc->sc_rx_pipeh); 2003 if (error != 0) { 2004 printf("%s: could not open Rx pipe: %s\n", 2005 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2006 goto fail; 2007 } 2008 2009 /* 2010 * Allocate Tx and Rx xfer queues. 2011 */ 2012 error = rum_alloc_tx_list(sc); 2013 if (error != 0) { 2014 printf("%s: could not allocate Tx list\n", 2015 USBDEVNAME(sc->sc_dev)); 2016 goto fail; 2017 } 2018 2019 error = rum_alloc_rx_list(sc); 2020 if (error != 0) { 2021 printf("%s: could not allocate Rx list\n", 2022 USBDEVNAME(sc->sc_dev)); 2023 goto fail; 2024 } 2025 2026 /* 2027 * Start up the receive pipe. 2028 */ 2029 for (i = 0; i < RT2573_RX_LIST_COUNT; i++) { 2030 data = &sc->rx_data[i]; 2031 2032 usbd_setup_xfer(data->xfer, sc->sc_rx_pipeh, data, data->buf, 2033 MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rum_rxeof); 2034 usbd_transfer(data->xfer); 2035 } 2036 2037 /* update Rx filter */ 2038 tmp = rum_read(sc, RT2573_TXRX_CSR0) & 0xffff; 2039 2040 tmp |= RT2573_DROP_PHY_ERROR | RT2573_DROP_CRC_ERROR; 2041 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2042 tmp |= RT2573_DROP_CTL | RT2573_DROP_VER_ERROR | 2043 RT2573_DROP_ACKCTS; 2044 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2045 tmp |= RT2573_DROP_TODS; 2046 if (!(ifp->if_flags & IFF_PROMISC)) 2047 tmp |= RT2573_DROP_NOT_TO_ME; 2048 } 2049 rum_write(sc, RT2573_TXRX_CSR0, tmp); 2050 2051 ifp->if_flags &= ~IFF_OACTIVE; 2052 ifp->if_flags |= IFF_RUNNING; 2053 2054 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2055 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2056 else 2057 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2058 2059 return 0; 2060 2061 fail: rum_stop(ifp, 1); 2062 return error; 2063 #undef N 2064 } 2065 2066 Static void 2067 rum_stop(struct ifnet *ifp, int disable) 2068 { 2069 struct rum_softc *sc = ifp->if_softc; 2070 struct ieee80211com *ic = &sc->sc_ic; 2071 uint32_t tmp; 2072 2073 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 2074 2075 sc->sc_tx_timer = 0; 2076 ifp->if_timer = 0; 2077 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2078 2079 /* disable Rx */ 2080 tmp = rum_read(sc, RT2573_TXRX_CSR0); 2081 rum_write(sc, RT2573_TXRX_CSR0, tmp | RT2573_DISABLE_RX); 2082 2083 /* reset ASIC */ 2084 rum_write(sc, RT2573_MAC_CSR1, 3); 2085 rum_write(sc, RT2573_MAC_CSR1, 0); 2086 2087 if (sc->sc_rx_pipeh != NULL) { 2088 usbd_abort_pipe(sc->sc_rx_pipeh); 2089 usbd_close_pipe(sc->sc_rx_pipeh); 2090 sc->sc_rx_pipeh = NULL; 2091 } 2092 2093 if (sc->sc_tx_pipeh != NULL) { 2094 usbd_abort_pipe(sc->sc_tx_pipeh); 2095 usbd_close_pipe(sc->sc_tx_pipeh); 2096 sc->sc_tx_pipeh = NULL; 2097 } 2098 2099 rum_free_rx_list(sc); 2100 rum_free_tx_list(sc); 2101 } 2102 2103 Static int 2104 rum_load_microcode(struct rum_softc *sc, const u_char *ucode, size_t size) 2105 { 2106 usb_device_request_t req; 2107 uint16_t reg = RT2573_MCU_CODE_BASE; 2108 usbd_status error; 2109 2110 /* copy firmware image into NIC */ 2111 for (; size >= 4; reg += 4, ucode += 4, size -= 4) 2112 rum_write(sc, reg, UGETDW(ucode)); 2113 2114 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 2115 req.bRequest = RT2573_MCU_CNTL; 2116 USETW(req.wValue, RT2573_MCU_RUN); 2117 USETW(req.wIndex, 0); 2118 USETW(req.wLength, 0); 2119 2120 error = usbd_do_request(sc->sc_udev, &req, NULL); 2121 if (error != 0) { 2122 printf("%s: could not run firmware: %s\n", 2123 USBDEVNAME(sc->sc_dev), usbd_errstr(error)); 2124 } 2125 return error; 2126 } 2127 2128 Static int 2129 rum_prepare_beacon(struct rum_softc *sc) 2130 { 2131 struct ieee80211com *ic = &sc->sc_ic; 2132 struct rum_tx_desc desc; 2133 struct mbuf *m0; 2134 int rate; 2135 2136 m0 = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo); 2137 if (m0 == NULL) { 2138 printf("%s: could not allocate beacon frame\n", 2139 sc->sc_dev.dv_xname); 2140 return ENOBUFS; 2141 } 2142 2143 /* send beacons at the lowest available rate */ 2144 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan) ? 12 : 2; 2145 2146 rum_setup_tx_desc(sc, &desc, RT2573_TX_TIMESTAMP, RT2573_TX_HWSEQ, 2147 m0->m_pkthdr.len, rate); 2148 2149 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2150 rum_write_multi(sc, RT2573_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2151 2152 /* copy beacon header and payload into NIC memory */ 2153 rum_write_multi(sc, RT2573_HW_BEACON_BASE0 + 24, mtod(m0, uint8_t *), 2154 m0->m_pkthdr.len); 2155 2156 m_freem(m0); 2157 2158 return 0; 2159 } 2160 2161 Static void 2162 rum_amrr_start(struct rum_softc *sc, struct ieee80211_node *ni) 2163 { 2164 int i; 2165 2166 /* clear statistic registers (STA_CSR0 to STA_CSR5) */ 2167 rum_read_multi(sc, RT2573_STA_CSR0, sc->sta, sizeof sc->sta); 2168 2169 ieee80211_amrr_node_init(&sc->amrr, &sc->amn); 2170 2171 /* set rate to some reasonable initial value */ 2172 for (i = ni->ni_rates.rs_nrates - 1; 2173 i > 0 && (ni->ni_rates.rs_rates[i] & IEEE80211_RATE_VAL) > 72; 2174 i--); 2175 ni->ni_txrate = i; 2176 2177 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2178 } 2179 2180 Static void 2181 rum_amrr_timeout(void *arg) 2182 { 2183 struct rum_softc *sc = arg; 2184 usb_device_request_t req; 2185 int s; 2186 2187 s = splusb(); 2188 2189 /* 2190 * Asynchronously read statistic registers (cleared by read). 2191 */ 2192 req.bmRequestType = UT_READ_VENDOR_DEVICE; 2193 req.bRequest = RT2573_READ_MULTI_MAC; 2194 USETW(req.wValue, 0); 2195 USETW(req.wIndex, RT2573_STA_CSR0); 2196 USETW(req.wLength, sizeof sc->sta); 2197 2198 usbd_setup_default_xfer(sc->amrr_xfer, sc->sc_udev, sc, 2199 USBD_DEFAULT_TIMEOUT, &req, sc->sta, sizeof sc->sta, 0, 2200 rum_amrr_update); 2201 (void)usbd_transfer(sc->amrr_xfer); 2202 2203 splx(s); 2204 } 2205 2206 Static void 2207 rum_amrr_update(usbd_xfer_handle xfer, usbd_private_handle priv, 2208 usbd_status status) 2209 { 2210 struct rum_softc *sc = (struct rum_softc *)priv; 2211 struct ifnet *ifp = sc->sc_ic.ic_ifp; 2212 2213 if (status != USBD_NORMAL_COMPLETION) { 2214 printf("%s: could not retrieve Tx statistics - cancelling " 2215 "automatic rate control\n", USBDEVNAME(sc->sc_dev)); 2216 return; 2217 } 2218 2219 /* count TX retry-fail as Tx errors */ 2220 ifp->if_oerrors += le32toh(sc->sta[5]) >> 16; 2221 2222 sc->amn.amn_retrycnt = 2223 (le32toh(sc->sta[4]) >> 16) + /* TX one-retry ok count */ 2224 (le32toh(sc->sta[5]) & 0xffff) + /* TX more-retry ok count */ 2225 (le32toh(sc->sta[5]) >> 16); /* TX retry-fail count */ 2226 2227 sc->amn.amn_txcnt = 2228 sc->amn.amn_retrycnt + 2229 (le32toh(sc->sta[4]) & 0xffff); /* TX no-retry ok count */ 2230 2231 ieee80211_amrr_choose(&sc->amrr, sc->sc_ic.ic_bss, &sc->amn); 2232 2233 callout_reset(&sc->amrr_ch, hz, rum_amrr_timeout, sc); 2234 } 2235 2236 int 2237 rum_activate(device_ptr_t self, enum devact act) 2238 { 2239 switch (act) { 2240 case DVACT_ACTIVATE: 2241 return EOPNOTSUPP; 2242 2243 case DVACT_DEACTIVATE: 2244 /*if_deactivate(&sc->sc_ic.ic_if);*/ 2245 break; 2246 } 2247 2248 return 0; 2249 } 2250
Indexes created Wed Sep 24 05:09:52 GMT 2025